METHOD AND APPARATUS FOR DETECTING INTERFERENCE IN RADIO CARRIER BAND
Embodiments of the present disclosure provide methods and apparatus for detecting interference in radio carrier band. A method performed at a network node may comprise: receiving, from a terminal device, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range; and determining whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range. According to embodiments of the present disclosure, the deterioration of channel state in a frequency range caused by interference may be shown and recognized via the comparison result.
The present disclosure relates generally to the technology of wireless communication, and in particular, to methods and apparatuses for detecting interference in a radio carrier band.
BACKGROUNDThis section introduces aspects that may facilitate better understanding of the present disclosure. Accordingly, the statements of this section are to be read in this light and are not to be understood as admissions about what is in the prior art or what is not in the prior art.
In some wireless communication systems, different radio carrier bands are assigned to adjacent cells, so as to reduce the interference between the adjacent cells.
However, in some situation, when two adjacent cells utilize carrier bands with very close or even partially overlapped frequency ranges, the interference may happen, and it is hard for one based station in one cell to detect whether a terminal device in the one cell is interfered by another cell/base station in the adjacent or overlapped frequency ranges.
SUMMARYThis summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
Certain aspects of the present disclosure and their embodiments may provide solutions to these or other challenges. There are, proposed herein, various embodiments which address one or more of the issues disclosed herein. Improved methods and apparatuses for detecting interference in a radio carrier band may be provided. Particularly, an interference in a frequency range adjacent or overlapped with another cell may be detected.
A first aspect of the present disclosure provides a method performed at a network node, comprising: receiving, from a terminal device, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range; and determining whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range.
In embodiments of the present disclosure, whether the terminal device is interfered is determined based on a first channel quality indicator, CQI, a first rank indication, RI, in the first report, and a second CQI, a second RI in the second report.
In embodiments of the present disclosure, determining whether the terminal device is interfered comprises: mapping the first CQI, the second CQI to a first information carrying capacity, ICC, a second ICC, respectively; weighting the first ICC, the second ICC, based on the first RI, the second RI, respectively; comparing a weighted value of first ICC, and a weighted value of the second ICC; determining the terminal device is interfered, if a difference between the weighted value of the first ICC and the weighted value of the second ICC is bigger than a threshold; and determining the terminal device is not interfered, if the difference between the weighted value of the first ICC and the weighted value of the second ICC is less than or equal to the threshold.
In embodiments of the present disclosure, the first CQI, the second CQI are mapped to the first ICC, the second ICC, based on a modulation manner.
In embodiments of the present disclosure, wherein the first frequency range is for a first communication technology or a second communication technology; and at least a part of the second frequency range is for both the first communication technology and the second communication technology.
In embodiments of the present disclosure, the first communication technology is of fifth generation, 5G, and the second communication technology is of fourth generation, 4G.
In embodiments of the present disclosure, the method further comprises: scheduling the terminal device to the first frequency range, if it is determined that the terminal device is interfered.
In embodiments of the present disclosure, the first frequency range is included in the second frequency range.
In embodiments of the present disclosure, a reference signal is transmitted in the first frequency range and/or the second frequency range.
In embodiments of the present disclosure, the reference signal comprises a channel state information reference signal, CSI-RS.
In embodiments of the present disclosure, the method further comprises: determining a need to trigger a predetermined event associated with the terminal device; determining whether a configuration about the predetermined event has been received by the terminal device; and transmitting, to the terminal device, an indicator for the configuration, in response to that the configuration has been received by the terminal device.
In embodiments of the present disclosure, the predetermined event comprises: transmitting a report about channel state of a frequency range, from the terminal device to the network node; and/or changing a radio frequency used by the terminal device to the frequency range.
In embodiments of the present disclosure, the indicator is included in a field of downlink control information, DCI.
In embodiments of the present disclosure, the indicator comprises a non-zero codepoint of a channel state information, CSI, request field.
In embodiments of the present disclosure, the method further comprises: determining a capability of the terminal device for storing configuration about the predetermined event; and transmitting, to the terminal device, the configuration about the predetermined event according to the capability of the terminal device, via radio resource control, RRC, reconfiguration.
In embodiments of the present disclosure, the network node comprises a base station.
A second aspect of the present disclosure provides a method performed at a terminal device, comprising: transmitting, to a network node, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range. The network node determines whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range.
In embodiments of the present disclosure, whether the terminal device is interfered is determined based on a first channel quality indicator, CQI, a first rank indication, RI, in the first report, and a second CQI, a second RI in the second report.
In embodiments of the present disclosure, the network node maps the first CQI, the second CQI to a first ICC, a second ICC, respectively; the network node weights the first ICC, the second ICC, based on the first RI, the second RI, respectively; the network node compares a weighted value of first ICC, and a weighted value of the second ICC; the network node determines the terminal device is interfered, if a difference between the weighted value of the first ICC and the weighted value of the second ICC is bigger than a threshold; and the network node determines the terminal device is not interfered, if the difference between the weighted value of the first ICC and the weighted value of the second ICC is less than or equal to the threshold.
In embodiments of the present disclosure, the first CQI, the second CQI are mapped to the first ICC, the second ICC, based on a modulation manner.
In embodiments of the present disclosure, the first frequency range is for a first communication technology or a second communication technology; and at least a part of the second frequency range is for both the first communication technology and the second communication technology.
In embodiments of the present disclosure, the first communication technology is of fifth generation, 5G, and the second communication technology is of fourth generation, 4G.
In embodiments of the present disclosure, the terminal device is scheduled to the first frequency range, if it is determined that the terminal device is interfered.
In embodiments of the present disclosure, the first frequency range is included in the second frequency range.
In embodiments of the present disclosure, a reference signal is transmitted in the first frequency range and/or the second frequency range.
In embodiments of the present disclosure, the reference signal comprises a channel state information reference signal, CSI-RS.
In embodiments of the present disclosure, the method further comprises: receiving, from the network node, an indicator for a configuration of a predetermined event, in response to that the network node determines a need to trigger the predetermined event associated with the terminal device, and determines the configuration about the predetermined event has been received by the terminal device.
In embodiments of the present disclosure, the predetermined event comprises: transmitting a report about channel state of a frequency range, from the terminal device to the network node; and/or changing a radio frequency used by the terminal device to the frequency range.
In embodiments of the present disclosure, the indicator is included in a field of downlink control information, DCI.
In embodiments of the present disclosure, the indicator comprises a non-zero codepoint of a channel state information, CSI, request field.
In embodiments of the present disclosure, the method further comprises: reporting a capability of the terminal device for storing configuration about the predetermined event; and receiving, from the network node, the configuration about the predetermined event according to the capability of the terminal device, via radio resource control, RRC, reconfiguration.
In embodiments of the present disclosure, the network node comprises a base station.
A third aspect of the present disclosure provides a network node, comprising: a processor; and a memory, the memory containing instructions executable by the processor, whereby the network node is operative to: receive, from a terminal device, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range; and determine whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range.
In embodiments of the present disclosure, the network node is operative to perform the method according to any of embodiments of the first aspect.
A fourth aspect of the present disclosure provides a terminal device, comprising: a processor; and a memory, the memory containing instructions executable by the processor, whereby the terminal device is operative to: transmit, to a network node, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range. The network node determines whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range.
In embodiments of the present disclosure, the terminal device is operative to perform the method according to any of embodiments of the second aspect.
A fifth aspect of the present disclosure provides a network node, comprising: a reception unit, configured to receive, from a terminal device, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range; and a determination unit, configured to determine whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range.
A sixth aspect of the present disclosure provides a terminal device, comprising: a transmission unit, configured to transmit to a network node, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range. The network node determines whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range.
A seventh aspect of the present disclosure provides a computer-readable storage medium storing instructions which when executed by at least one processor, cause the at least one processor to perform the method according to any embodiments of the first and second aspects.
Embodiments herein afford many advantages. For example, in embodiments herein, the network node may determine whether the terminal device is interfered, based on a comparison between the channel states of more than one frequency ranges. Thus, the deterioration of channel state in a frequency range caused by interference may be shown and recognized via the comparison result. A person skilled in the art will recognize additional features and advantages upon reading the following detailed description.
The above and other aspects, features, and benefits of various embodiments of the present disclosure will become more fully apparent, by way of example, from the following detailed description with reference to the accompanying drawings, in which like reference numerals or letters are used to designate like or equivalent elements. The drawings are illustrated for facilitating better understanding of the embodiments of the disclosure and not necessarily drawn to scale, in which:
The embodiments of the present disclosure are described in detail with reference to the accompanying drawings. It should be understood that these embodiments are discussed only for the purpose of enabling those skilled persons in the art to better understand and thus implement the present disclosure, rather than suggesting any limitations on the scope of the present disclosure. Reference throughout this specification to features, advantages, or similar language does not imply that all of the features and advantages that may be realized with the present disclosure should be or are in any single embodiment of the disclosure. Rather, language referring to the features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present disclosure. Furthermore, the described features, advantages, and characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. One skilled in the relevant art will recognize that the disclosure may be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the disclosure.
Generally, all terms used herein are to be interpreted according to their ordinary meaning in the relevant technical field, unless a different meaning is clearly given and/or is implied from the context in which it is used. All references to a/an/the element, apparatus, component, means, step, etc. are to be interpreted openly as referring to at least one instance of the element, apparatus, component, means, step, etc., unless explicitly stated otherwise. The steps of any methods disclosed herein do not have to be performed in the exact order disclosed, unless a step is explicitly described as following or preceding another step and/or where it is implicit that a step must follow or precede another step. Any feature of any of the embodiments disclosed herein may be applied to any other embodiment, wherever appropriate. Likewise, any advantage of any of the embodiments may apply to any other embodiments, and vice versa. Other objectives, features and advantages of the enclosed embodiments will be apparent from the following description.
As used herein, the term “network” or “communication network” refers to a network following any suitable wireless communication standards. For example, the wireless communication standards may comprise 5th generation (5G), new radio (NR), 4th generation (4G), long term evolution (LTE), LTE-Advanced, wideband code division multiple access (WCDMA), high-speed packet access (HSPA), Code Division Multiple Access (CDMA), Time Division Multiple Address (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency-Division Multiple Access (OFDMA), Single carrier frequency division multiple access (SC-FDMA) and other wireless networks. In the following description, the terms “network” and “system” can be used interchangeably. Furthermore, the communications between two devices in the network may be performed according to any suitable communication protocols, including, but not limited to, the wireless communication protocols as defined by a standard organization such as 3rd generation partnership project (3GPP) or the wired communication protocols.
The term “network node” used herein refers to a network device or network entity or network function or any other devices (physical or virtual) in a communication network. For example, the network node in the network may include a base station (BS), an access point (AP), a multi-cell/multicast coordination entity (MCE), a server node/function (such as a service capability server/application server, SCS/AS, group communication service application server, GCS AS, application function, AF), an exposure node/function (such as a service capability exposure function, SCEF, network exposure function, NEF), a unified data management, UDM, a home subscriber server, HSS, a session management function, SMF, an access and mobility management function, AMF, a mobility management entity, MME, a controller or any other suitable device in a wireless communication network. The BS may be, for example, a node B (NodeB or NB), an evolved NodeB (eNodeB or eNB), a next generation NodeB (gNodeB or gNB), a remote radio unit (RRU), a radio header (RH), a remote radio head (RRH), a relay, a low power node such as a femto, a pico, and so forth.
Yet further examples of the network node may comprise multi-standard radio (MSR) radio equipment such as MSR BSs, network controllers such as radio network controllers (RNCs) or base station controllers (BSCs), base transceiver stations (BTSs), transmission points, transmission nodes, positioning nodes and/or the like.
Further, the term “network node” may also refer to any suitable function which can be implemented in a network entity (physical or virtual) of a communication network. For example, the 5G system (5GS) may comprise a plurality of NFs such as AMF (Access and mobility Function), SMF (Session Management Function), AUSF (Authentication Service Function), UDM (Unified Data Management), PCF (Policy Control Function), AF (Application Function), NEF (Network Exposure Function), UPF (User plane Function) and NRF (Network Repository Function), RAN (radio access network), SCP (service communication proxy), etc. In other embodiments, the network function may comprise different types of NFs (such as PCRF (Policy and Charging Rules Function), etc.) for example depending on the specific network.
The term “terminal device” refers to any end device that can access a communication network and receive services therefrom. By way of example and not limitation, the terminal device refers to a mobile terminal, user equipment (UE), or other suitable devices. The UE may be, for example, a Subscriber Station (SS), a Portable Subscriber Station, a Mobile Station (MS), or an Access Terminal (AT). The terminal device may include, but not limited to, a portable computer, an image capture terminal device such as a digital camera, a gaming terminal device, a music storage and a playback appliance, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet, a wearable device, a personal digital assistant (PDA), a portable computer, a desktop computer, a wearable terminal device, a vehicle-mounted wireless terminal device, a wireless endpoint, a mobile station, a laptop-embedded equipment (LEE), a laptop-mounted equipment (LME), a USB dongle, a smart device, a wireless customer-premises equipment (CPE) and the like. In the following description, the terms “terminal device”, “terminal”, “user equipment” and “UE” may be used interchangeably. As one example, a terminal device may represent a UE configured for communication in accordance with one or more communication standards promulgated by the 3GPP, such as 3GPP′ LTE standard or NR standard. As used herein, a “user equipment” or “UE” may not necessarily have a “user” in the sense of a human user who owns and/or operates the relevant device. In some embodiments, a terminal device may be configured to transmit and/or receive information without direct human interaction. For instance, a terminal device may be designed to transmit information to a network on a predetermined schedule, when triggered by an internal or external event, or in response to requests from the communication network. Instead, a UE may represent a device that is intended for sale to, or operation by, a human user but that may not initially be associated with a specific human user.
As yet another example, in an Internet of Things (IoT) scenario, a terminal device may represent a machine or other device that performs monitoring and/or measurements, and transmits the results of such monitoring and/or measurements to another terminal device and/or network equipment. The terminal device may in this case be a machine-to-machine (M2M) device, which may in a 3GPP context be referred to as a machine-type communication (MTC) device. As one particular example, the terminal device may be a UE implementing the 3GPP narrow band internet of things (NB-IoT) standard. Particular examples of such machines or devices are sensors, metering devices such as power meters, industrial machinery, or home or personal appliances, for example refrigerators, televisions, personal wearables such as watches etc. In other scenarios, a terminal device may represent a vehicle or other equipment that is capable of monitoring and/or reporting on its operational status or other functions associated with its operation.
References in the specification to “one embodiment,” “an embodiment,” “an example embodiment,” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
It shall be understood that although the terms “first” and “second” etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed terms.
As used herein, the phrase “at least one of A and (or) B” should be understood to mean “only A, only B, or both A and B.” The phrase “A and/or B” should be understood to mean “only A, only B, or both A and B.”
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “has”, “having”, “includes” and/or “including”, when used herein, specify the presence of stated features, elements, and/or components etc., but do not preclude the presence or addition of one or more other features, elements, components and/or combinations thereof.
It is noted that these terms as used in this document are used only for ease of description and differentiation among nodes, devices or networks etc. With the development of the technology, other terms with the similar/same meanings may also be used.
In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
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Such situation might happen for initial stage of 5G NR deployment, since a lot of 4G networks can't be re-farmed in a short term, and will bring intra-frequency interference between 4G and 5G, the through-put will be badly impacted.
This is particularly typical when NR set to a larger bandwidth (i.e. 100M), which have neighbor intra-frequency LTE cells, the through-put will be lower than bandwidth which has no interference from 4G.
Another typical scenario is in time division duplexing, TDD, dynamic spectrum sharing, when NR preempt LTE bandwidth, the through-put for NR will be badly impacted by LTE intra-frequency neighbor cell which will bring negative gain.
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When interference exists, one of the most important things is how to detect it, since the method to avoid the interference can only be used when the accurate interfered band is detected.
One method to detect interference is to configure sub-band CQI report to show the CQI of each sub bands. Below is the configurable sub-band size in 3GPP.
That is, the terminal device may be configured to report a plurality of CQIs associated with different subbands, such as SB0, . . . , SB8. RB refers to resource block. SINR refers to signal to interference plus noise ratio.
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Take the 29th report as example, several sbCqi (such as 11) is still higher than 9, even there is interference. That is, for several kinds of UE, when NR is interfered by a neighbor intra-frequency LTE cell, the sub-band CQI can't report difference between pure NR sub bands and interfered sub bands as shown in
Here NR bandwidth is set to 100 MHz, and 20 MHz LTE interference from neighboring cell is used. The sub-band CQI report for NR side is configured. It can be seen from the sub-band CQI report, it is hard to find sub-band correctly detect interference. That indicates sub-band CQI is not accurate enough to detect LTE sub-band interference.
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According to embodiments of the present disclosure, the network node may determine whether the terminal device is interfered, based on a comparison between the channel states of more than one frequency ranges. Thus, the deterioration of channel state in a frequency range caused by interference may be shown and recognized via the comparison result.
In embodiments of the present disclosure, the network node comprises a base station.
The first report and the second report may be obtained by the network node utilizing a radio resource control, RRC, reconfiguration procedure between the network and the terminal device.
Alternatively, other manners may be utilized by the network node to obtain the first report and the second report, so as to reduce the messages/signallings during such RRC reconfiguration procedure.
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In embodiments of the present disclosure, the predetermined event may comprise: transmitting a report about channel state of a frequency range, from the terminal device to the network node; and/or changing a radio frequency used by the terminal device to the frequency range.
According to embodiments of the present disclosure, the network node may configure the terminal device in advance, and then transmit only an indicator to indicate the terminal device to transmit the report. An RRC reconfiguration procedure will be not necessary when obtaining the report, thus RRC reconfiguration back-and-forth signals and air interface resource spent therefor may be reduced. Moreover, time window for the network node to obtain the reports may be shortened.
In embodiments of the present disclosure, the indicator is included in a field of downlink control information, DCI.
In embodiments of the present disclosure, the indicator comprises a non-zero codepoint of a channel state information, CSI, request field.
According to embodiments of the present disclosure, a DCI could be used to carry such indicator. Thus, when the terminal device receives a physical downlink control channel, PDCCH, signalling including such DCI, the terminal device will directly be indicated to report the channel states of the frequency ranges. No extra message or complicated interface as in the RRC reconfiguration procedure is needed between the network node and the terminal device.
It should be understood, if the configuration of the required frequency range is not received by the terminal device yet, a RRC reconfiguration procedure may be still alternatively utilized to indicate the terminal device.
In embodiments of the present disclosure, whether the terminal device is interfered is determined based on a first channel quality indicator, CQI, a first rank indication, RI, in the first report, and a second CQI, a second RI in the second report.
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In embodiments of the present disclosure, the first CQI, the second CQI are mapped to the first ICC, the second ICC, based on a modulation manner.
According to embodiments of the present disclosure, the channel states of the frequency range is represented based on more than one parameters, such as the CQI, RI, rather than by a single parameter or a single indicator. The channel state of the frequency range may be represented more accurate. Thus, the interference may be detected more accurate, based on the channel states.
In embodiments of the present disclosure, wherein the first frequency range is for a first communication technology or a second communication technology; and at least a part of the second frequency range is for both the first communication technology and the second communication technology.
In embodiments of the present disclosure, the first communication technology is of fifth generation, 5G, and the second communication technology is of fourth generation, 4G.
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That is, the terminal device may be scheduled to the frequency range specified for only one communication technology, such as 5G NR, or 4G LTE, to reduce the possibility to be interfered.
In embodiments of the present disclosure, the first frequency range is included in the second frequency range. Alternatively, the first frequency range may be adjacent to the second frequency range or partially overleaped.
In embodiments of the present disclosure, a reference signal is transmitted in the first frequency range and/or the second frequency range.
In embodiments of the present disclosure, the reference signal comprises a channel state information reference signal, CSI-RS.
According to embodiments of the present disclosure, an improved manner for the network node to determine whether the terminal device is interfered is provided. The deterioration of channel state in a frequency range caused by interference may be shown and recognized via the comparison result of channel states of different frequency ranges.
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According to embodiments of the present disclosure, the terminal device may report to the network node, about channel states of different frequency ranges. The network node may determine whether the terminal device is interfered, based on a comparison between the channel states of more than one frequency ranges. Thus, the deterioration of channel state in a frequency range caused by interference may be shown and recognized via the comparison result.
In embodiments of the present disclosure, the method further comprising: S202, reporting a capability of the terminal device for storing configuration about a predetermined event; and S203, receiving, from the network node, the configuration about the predetermined event according to the capability of the terminal device, via radio resource control, RRC, reconfiguration.
In embodiments of the present disclosure, the method further comprises: S204, receiving, from the network node, an indicator for a configuration of a predetermined event, in response to that the network node determines a need to trigger the predetermined event associated with the terminal device, and determines the configuration about the predetermined event has been received by the terminal device.
In embodiments of the present disclosure, the predetermined event may comprise: transmitting a report about channel state of a frequency range, from the terminal device to the network node; and/or changing a radio frequency used by the terminal device to the frequency range.
According to embodiments of the present disclosure, a DCI could be used to carry such indicator. Thus, when the terminal device receives a physical downlink control channel, PDCCH, signalling including such DCI, the terminal device will directly be indicated to report the channel states of the frequency ranges. No extra message or complicated interface as in the RRC reconfiguration procedure is needed between the network node and the terminal device.
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In embodiments of the present disclosure, the network node 1 is operative to perform the method according to any of the above embodiments, such as these shown in
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In embodiments of the present disclosure, the terminal device is operative to perform the method according to any embodiment of the above embodiments, such as these shown in
The processors 101, 201 may be any kind of processing component, such as one or more microprocessor or microcontrollers, as well as other digital hardware, which may include digital signal processors (DSPs), special-purpose digital logic, and the like. The memories 102, 202 may be any kind of storage component, such as read-only memory (ROM), random-access memory, cache memory, flash memory devices, optical storage devices, etc.
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In addition, the present disclosure may also provide a carrier containing the computer program as mentioned above, wherein the carrier is one of an electronic signal, optical signal, radio signal, or computer readable storage medium. The computer readable storage medium can be, for example, an optical compact disk or an electronic memory device like a RAM (random access memory), a ROM (read only memory), Flash memory, magnetic tape, CD-ROM, DVD, Blue-ray disc and the like.
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In embodiments of the present disclosure, the network node 1 is operative to perform the method according to any of the above embodiments, such as these shown in
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In embodiments of the present disclosure, the terminal device is operative to perform the method according to any of the above embodiments, such as those shown in
The term ‘unit’ may have conventional meaning in the field of electronics, electrical devices and/or electronic devices and may include, for example, electrical and/or electronic circuitry, devices, modules, processors, memories, logic solid state and/or discrete devices, computer programs or instructions for carrying out respective tasks, procedures, computations, outputs, and/or displaying functions, and so on, as such as those that are described herein.
With these units, the network node 1 and the terminal device 2, may not need a fixed processor or memory, any computing resource and storage resource may be arranged from at least one network node/device/entity/apparatus relating to the communication system. The virtualization technology and network computing technology (e.g. cloud computing) may be further introduced, so as to improve the usage efficiency of the network resources and the flexibility of the network.
The techniques described herein may be implemented by various means so that an apparatus implementing one or more functions of a corresponding apparatus described with an embodiment comprises not only prior art means, but also means for implementing the one or more functions of the corresponding apparatus described with the embodiment and it may comprise separate means for each separate function, or means that may be configured to perform two or more functions. For example, these techniques may be implemented in hardware (one or more apparatuses), firmware (one or more apparatuses), software (one or more modules), or combinations thereof. For a firmware or software, implementation may be made through modules (e.g., procedures, functions, and so on) that perform the functions described herein.
Particularly, these function units may be implemented either as a network element on a dedicated hardware, as a software instance running on a dedicated hardware, or as a virtualized function instantiated on an appropriate platform, e.g. on a cloud infrastructure.
A further detailed embodiments is illustrated below.
In order to accurately detect the 4/5G interference, the frequency band/range used for Channel State Information-Reference Signal, CSI-RS, will be set based on LTE interfered cell location, while the NR bandwidth part, BWP, will not be changed. Multiple CSI-RS resources and reports may be configured according to the selected NR sub-band. There are different implementations for configuration, examples with feasibility is shown in
The initial BWP is set to 100M bandwidth (central frequency=2565 MHz) and it will not be changed. NR has 60M pure bandwidth, 2 neighbor LTE cells (D1(central frequency=2585 MHz) and D2(central frequency=2604.8 MHz)) each with 20M bandwidth will impact on NR 40M bandwidth.
In this case 3 NR sub-band may be configured: {NR pure band=60M (No LTE neighbor cells existed), NR band with LTE neighbor D1 cell=20M, NR band with LTE neighbor D2 cell=20M, each available bandwidth, ABW, need one CSI resource and report. Accordingly, 3 CSI-RS resource and report will be configured, each one will be related to one NR sub-band.
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It should be understood that the above configurations are just examples, and other's sub-band combination may also be applicable.
The CSI-RS resource and report number are related with UE capability and existed neighbor LTE cell number. The max number of CSI resource and report UE can support is indicated by UE capability information, from 3GPP 38.331.
The number of CSI-RS can be used also depends on the UE capability “csi-ReportFramework->maxNumberAperiodicCSI-PerBWP-ForCSI-Report”, which mentioned in 3GPP technical specification, TS 38.331 V15.9.0 (2020-03).
After gNB got this UE capability and based on the interfered LTE cell number, it determines the number of CSI configuration that can be configured to UE.
If the number of CSI-RS which UE can supported is smaller than the required number, the possible interfered sub-bands may be combined to meet the UE capability requirement.
For example, 3 wide-band CSI reports may be needed to detect the 4/5G interference.
As shown in
As shown in
Configuration of multiple CSI-RS resource and report may be sent to UE via RRC-reconfiguration signal after getting UE capability, and CSI-RS resource and report configuration for each possible ABW is configured as one triggering state in higher layer parameter AperiodicTriggerStateList, when the interference needs to be detected.
Specifically, triggering state for new ABW may be initiated using the CSI request field in DCI.
A non-zero codepoint of the CSI request field in the DCI 0_1 is mapped to a CSI triggering state according to the order of the associated positions of the up to 2NTs 1 trigger states in CSI-AperiodicTriggerStateList with codepoint ‘1’ mapped to the triggering state in the first position, where N_TS is the number of bits in the DCI CSI request field configured by higher layer parameter reportTriggerSize.
RRC reconfiguration signal may also be used to inform UE the CSI-RS resource and report configuration is changed.
As shown in
After the UE received and stored these configurations, whenever the type of the bandwidth needs to be measured, the base station sends a PDCCH message including a DCI 0_1 to the UE, or initiating another RRC reconfiguration procedure.
For example, the DCI 0_1 may include a CSI request, 0, to indicate the UE to change to the measure the NR pure band (60 MHz) CQI. After UE receives this CSI request in DCI, the UE may directly measure the CSI-RS signal and send the CSI report based on the received CSI-RS signal. As another example shown in
Further, only for an example,
When multiple wide-band CSIs are reported from UE for different sub-bans, the gNB will mapping the reported CQI to ICC, and then weighting the ICC by RI, to obtain the channel quality.
ICC refers to Information Carrying Capacity, iccPerReFilt refers to Filtered Information Carrying Capacity per RE.
Then the difference value between the NR pure band (the first frequency range) and possible interfered band (the second frequency range) is compared with a configured threshold, so as to determine whether the interference exists.
If (channel quality(NR pure band)−channel quality(NR interfered band))>threshold, it is determined that the interference exists and the resource block group, RBGs, in NR interfered sub-band are not available for PDSCH.
Below are 2 examples for showing why considering both RI and CQI:
CQI report for NR pure band: RI=4, CQI=12;
CQI report for NR interfered band: RI=1, CQI=15.
In this case, the interfered band CQI is larger than pure band, but the RI is much lower than pure band, so if only considering CQI, it will mismatch for pure and interfered band and cannot detect the interference.
CQI report for NR pure band: RI=4, CQI=15;
CQI report for NR interfered band: RI=4, CQI=9.
In this case, the interfered band RI is equal to pure band, so there is no problem to only consider CQI. Of course, the same formula may be used. Table 2 shows mapping relationship between the CQI and ICC.
As an example, if CQI=5, a greatest ICC 0.8770 based on QPSK may be selected. Then, when RI=1, the Channel Quality will be 1*0.8770=0.8770.
It should be understood that the second frequency range may further includes the pure NR band, namely, the first frequency range may be included in the second frequency range.
When the accurate interfered sub-band is detected, several methods may be utilized to avoid it.
For example, one UE which in cell good/middle point is scheduled to use NR pure band to avoid the Modulation and Coding Scheme, MCS, will be decreased by interfered sub-band. Then the UE which in cell bad point may be scheduled to use the interfered sub-band. In this way, the efficiency of the whole communication system may be improved.
Alternatively, the UE which in cell bad point may be scheduled to use the pure NR sub-band (without interference), the commutation quality of the UE may be improved.
According to embodiments of the present disclosure, rather than configuring sub-band CQI report, multiple wide-band CQI reports are configured for different frequency bands/ranges (such as pure NR band and interfered NR band to accurately detect the 4/5G interference).
For example, multiple NR CSI-RS resources and reports are configured according to the Interference distribution between NR and LTE. The numbers of CSI-RS resources and reports are determined by the interfered LTE cell number and location. However, the number of CSI-RS resources and reports are also limited by UE capability.
Different wide-band CSI-RS reports will be reported for the configured bandwidth. The difference value between CSI-RS reports (pure NR band and interfered band) will be used to determine if there existed any 4/5G interference.
Multiple aperiodic CSI-RS resources and reports for NR pure sub-band and LTE/NR interfered sub-band may be configured. In doing so, the 4/5G interference may be accurately detected based on reported wide-band CSI value.
It should be understood, the base station of LTE may also detect the interference in D1, D2 by the NR, by comparing the RI, CQI in a pure LTE band and the RI, CQI in D1, D2. Further, it should be understood the 4G/5G systems are just examples, any other kind of systems, such as 3G, or even 6G, etc. are also applicable.
Although the subject matter described herein may be implemented in any appropriate type of system using any suitable components, the embodiments disclosed herein are described in relation to a wireless network, such as the example wireless network illustrated in
The wireless network may comprise and/or interface with any type of communication, telecommunication, data, cellular, and/or radio network or other similar type of system. In some embodiments, the wireless network may be configured to operate according to specific standards or other types of predefined rules or procedures. Thus, particular embodiments of the wireless network may implement communication standards, such as Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), and/or other suitable 2G, 3G, 4G, or 5G standards; wireless local area network (WLAN) standards, such as the IEEE 802.11 standards; and/or any other appropriate wireless communication standard, such as the Worldwide Interoperability for Microwave Access (WiMax), Bluetooth, Z-Wave and/or ZigBee standards.
Network 1006 may comprise one or more backhaul networks, core networks, IP networks, public switched telephone networks (PSTNs), packet data networks, optical networks, wide-area networks (WANs), local area networks (LANs), wireless local area networks (WLANs), wired networks, wireless networks, metropolitan area networks, and other networks to enable communication between devices.
Network node 1060 and WD 1010 comprise various components described in more detail below. These components work together in order to provide network node and/or wireless device functionality, such as providing wireless connections in a wireless network. In different embodiments, the wireless network may comprise any number of wired or wireless networks, network nodes, base stations, controllers, wireless devices, relay stations, and/or any other components or systems that may facilitate or participate in the communication of data and/or signals whether via wired or wireless connections.
As used herein, network node refers to equipment capable, configured, arranged and/or operable to communicate directly or indirectly with a wireless device and/or with other network nodes or equipment in the wireless network to enable and/or provide wireless access to the wireless device and/or to perform other functions (e.g., administration) in the wireless network. Examples of network nodes include, but are not limited to, access points (APs) (e.g., radio access points), base stations (BSs) (e.g., radio base stations, Node Bs, evolved Node Bs (eNBs) and NR NodeBs (gNBs)). Base stations may be categorized based on the amount of coverage they provide (or, stated differently, their transmit power level) and may then also be referred to as femto base stations, pico base stations, micro base stations, or macro base stations. A base station may be a relay node or a relay donor node controlling a relay. A network node may also include one or more (or all) parts of a distributed radio base station such as centralized digital units and/or remote radio units (RRUs), sometimes referred to as Remote Radio Heads (RRHs). Such remote radio units may or may not be integrated with an antenna as an antenna integrated radio. Parts of a distributed radio base station may also be referred to as nodes in a distributed antenna system (DAS). Yet further examples of network nodes include multi-standard radio (MSR) equipment such as MSR BSs, network controllers such as radio network controllers (RNCs) or base station controllers (BSCs), base transceiver stations (BTSs), transmission points, transmission nodes, multi-cell/multicast coordination entities (MCEs), core network nodes (e.g., MSCs, MMEs), O&M nodes, OSS nodes, SON nodes, positioning nodes (e.g., E-SMLCs), and/or MDTs. As another example, a network node may be a virtual network node as described in more detail below. More generally, however, network nodes may represent any suitable device (or group of devices) capable, configured, arranged, and/or operable to enable and/or provide a wireless device with access to the wireless network or to provide some service to a wireless device that has accessed the wireless network.
In
Similarly, network node 1060 may be composed of multiple physically separate components (e.g., a NodeB component and a RNC component, or a BTS component and a BSC component, etc.), which may each have their own respective components. In certain scenarios in which network node 1060 comprises multiple separate components (e.g., BTS and BSC components), one or more of the separate components may be shared among several network nodes. For example, a single RNC may control multiple NodeB's. In such a scenario, each unique NodeB and RNC pair, may in some instances be considered a single separate network node. In some embodiments, network node 1060 may be configured to support multiple radio access technologies (RATs). In such embodiments, some components may be duplicated (e.g., separate device readable medium 1080 for the different RATs) and some components may be reused (e.g., the same antenna 1062 may be shared by the RATs). Network node 1060 may also include multiple sets of the various illustrated components for different wireless technologies integrated into network node 1060, such as, for example, GSM, WCDMA, LTE, NR, WiFi, or Bluetooth wireless technologies. These wireless technologies may be integrated into the same or different chip or set of chips and other components within network node 1060.
Processing circuitry 1070 is configured to perform any determining, calculating, or similar operations (e.g., certain obtaining operations) described herein as being provided by a network node. These operations performed by processing circuitry 1070 may include processing information obtained by processing circuitry 1070 by, for example, converting the obtained information into other information, comparing the obtained information or converted information to information stored in the network node, and/or performing one or more operations based on the obtained information or converted information, and as a result of said processing making a determination.
Processing circuitry 1070 may comprise a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application-specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software and/or encoded logic operable to provide, either alone or in conjunction with other network node 1060 components, such as device readable medium 1080, network node 1060 functionality. For example, processing circuitry 1070 may execute instructions stored in device readable medium 1080 or in memory within processing circuitry 1070. Such functionality may include providing any of the various wireless features, functions, or benefits discussed herein. In some embodiments, processing circuitry 1070 may include a system on a chip (SOC).
In some embodiments, processing circuitry 1070 may include one or more of radio frequency (RF) transceiver circuitry 1072 and baseband processing circuitry 1074. In some embodiments, radio frequency (RF) transceiver circuitry 1072 and baseband processing circuitry 1074 may be on separate chips (or sets of chips), boards, or units, such as radio units and digital units. In alternative embodiments, part or all of RF transceiver circuitry 1072 and baseband processing circuitry 1074 may be on the same chip or set of chips, boards, or units
In certain embodiments, some or all of the functionality described herein as being provided by a network node, base station, eNB or other such network device may be performed by processing circuitry 1070 executing instructions stored on device readable medium 1080 or memory within processing circuitry 1070. In alternative embodiments, some or all of the functionality may be provided by processing circuitry 1070 without executing instructions stored on a separate or discrete device readable medium, such as in a hard-wired manner In any of those embodiments, whether executing instructions stored on a device readable storage medium or not, processing circuitry 1070 can be configured to perform the described functionality. The benefits provided by such functionality are not limited to processing circuitry 1070 alone or to other components of network node 1060, but are enjoyed by network node 1060 as a whole, and/or by end users and the wireless network generally.
Device readable medium 1080 may comprise any form of volatile or non-volatile computer readable memory including, without limitation, persistent storage, solid-state memory, remotely mounted memory, magnetic media, optical media, random access memory (RAM), read-only memory (ROM), mass storage media (for example, a hard disk), removable storage media (for example, a flash drive, a Compact Disk (CD) or a Digital Video Disk (DVD)), and/or any other volatile or non-volatile, non-transitory device readable and/or computer-executable memory devices that store information, data, and/or instructions that may be used by processing circuitry 1070. Device readable medium 1080 may store any suitable instructions, data or information, including a computer program, software, an application including one or more of logic, rules, code, tables, etc. and/or other instructions capable of being executed by processing circuitry 1070 and, utilized by network node 1060. Device readable medium 1080 may be used to store any calculations made by processing circuitry 1070 and/or any data received via interface 1090. In some embodiments, processing circuitry 1070 and device readable medium 1080 may be considered to be integrated.
Interface 1090 is used in the wired or wireless communication of signalling and/or data between network node 1060, network 1006, and/or WDs 1010. As illustrated, interface 1090 comprises port(s)/terminal(s) 1094 to send and receive data, for example to and from network 1006 over a wired connection. Interface 1090 also includes radio front end circuitry 1092 that may be coupled to, or in certain embodiments a part of, antenna 1062. Radio front end circuitry 1092 comprises filters 1098 and amplifiers 1096. Radio front end circuitry 1092 may be connected to antenna 1062 and processing circuitry 1070. Radio front end circuitry may be configured to condition signals communicated between antenna 1062 and processing circuitry 1070. Radio front end circuitry 1092 may receive digital data that is to be sent out to other network nodes or WDs via a wireless connection. Radio front end circuitry 1092 may convert the digital data into a radio signal having the appropriate channel and bandwidth parameters using a combination of filters 1098 and/or amplifiers 1096. The radio signal may then be transmitted via antenna 1062. Similarly, when receiving data, antenna 1062 may collect radio signals which are then converted into digital data by radio front end circuitry 1092. The digital data may be passed to processing circuitry 1070. In other embodiments, the interface may comprise different components and/or different combinations of components.
In certain alternative embodiments, network node 1060 may not include separate radio front end circuitry 1092, instead, processing circuitry 1070 may comprise radio front end circuitry and may be connected to antenna 1062 without separate radio front end circuitry 1092. Similarly, in some embodiments, all or some of RF transceiver circuitry 1072 may be considered a part of interface 1090. In still other embodiments, interface 1090 may include one or more ports or terminals 1094, radio front end circuitry 1092, and RF transceiver circuitry 1072, as part of a radio unit (not shown), and interface 1090 may communicate with baseband processing circuitry 1074, which is part of a digital unit (not shown).
Antenna 1062 may include one or more antennas, or antenna arrays, configured to send and/or receive wireless signals. Antenna 1062 may be coupled to radio front end circuitry 1090 and may be any type of antenna capable of transmitting and receiving data and/or signals wirelessly. In some embodiments, antenna 1062 may comprise one or more omni-directional, sector or panel antennas operable to transmit/receive radio signals between, for example, 2 GHz and 66 GHz. An omni-directional antenna may be used to transmit/receive radio signals in any direction, a sector antenna may be used to transmit/receive radio signals from devices within a particular area, and a panel antenna may be a line of sight antenna used to transmit/receive radio signals in a relatively straight line. In some instances, the use of more than one antenna may be referred to as MIMO. In certain embodiments, antenna 1062 may be separate from network node 1060 and may be connectable to network node 1060 through an interface or port.
Antenna 1062, interface 1090, and/or processing circuitry 1070 may be configured to perform any receiving operations and/or certain obtaining operations described herein as being performed by a network node. Any information, data and/or signals may be received from a wireless device, another network node and/or any other network equipment. Similarly, antenna 1062, interface 1090, and/or processing circuitry 1070 may be configured to perform any transmitting operations described herein as being performed by a network node. Any information, data and/or signals may be transmitted to a wireless device, another network node and/or any other network equipment.
Power circuitry 1087 may comprise, or be coupled to, power management circuitry and is configured to supply the components of network node 1060 with power for performing the functionality described herein. Power circuitry 1087 may receive power from power source 1086. Power source 1086 and/or power circuitry 1087 may be configured to provide power to the various components of network node 1060 in a form suitable for the respective components (e.g., at a voltage and current level needed for each respective component). Power source 1086 may either be included in, or external to, power circuitry 1087 and/or network node 1060. For example, network node 1060 may be connectable to an external power source (e.g., an electricity outlet) via an input circuitry or interface such as an electrical cable, whereby the external power source supplies power to power circuitry 1087. As a further example, power source 1086 may comprise a source of power in the form of a battery or battery pack which is connected to, or integrated in, power circuitry 1087. The battery may provide backup power should the external power source fail. Other types of power sources, such as photovoltaic devices, may also be used.
Alternative embodiments of network node 1060 may include additional components beyond those shown in
As used herein, wireless device (WD) refers to a device capable, configured, arranged and/or operable to communicate wirelessly with network nodes and/or other wireless devices. Unless otherwise noted, the term WD may be used interchangeably herein with user equipment (UE). Communicating wirelessly may involve transmitting and/or receiving wireless signals using electromagnetic waves, radio waves, infrared waves, and/or other types of signals suitable for conveying information through air. In some embodiments, a WD may be configured to transmit and/or receive information without direct human interaction. For instance, a WD may be designed to transmit information to a network on a predetermined schedule, when triggered by an internal or external event, or in response to requests from the network. Examples of a WD include, but are not limited to, a smart phone, a mobile phone, a cell phone, a voice over IP (VoIP) phone, a wireless local loop phone, a desktop computer, a personal digital assistant (PDA), a wireless cameras, a gaming console or device, a music storage device, a playback appliance, a wearable terminal device, a wireless endpoint, a mobile station, a tablet, a laptop, a laptop-embedded equipment (LEE), a laptop-mounted equipment (LME), a smart device, a wireless customer-premise equipment (CPE), a vehicle-mounted wireless terminal device, etc. A WD may support device-to-device (D2D) communication, for example by implementing a 3GPP standard for sidelink communication, vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-everything (V2X) and may in this case be referred to as a D2D communication device. As yet another specific example, in an Internet of Things (IoT) scenario, a WD may represent a machine or other device that performs monitoring and/or measurements, and transmits the results of such monitoring and/or measurements to another WD and/or a network node. The WD may in this case be a machine-to-machine (M2M) device, which may in a 3GPP context be referred to as an MTC device. As one particular example, the WD may be a UE implementing the 3GPP narrow band internet of things (NB-IoT) standard. Particular examples of such machines or devices are sensors, metering devices such as power meters, industrial machinery, or home or personal appliances (e.g. refrigerators, televisions, etc.) personal wearables (e.g., watches, fitness trackers, etc.). In other scenarios, a WD may represent a vehicle or other equipment that is capable of monitoring and/or reporting on its operational status or other functions associated with its operation. A WD as described above may represent the endpoint of a wireless connection, in which case the device may be referred to as a wireless terminal. Furthermore, a WD as described above may be mobile, in which case it may also be referred to as a mobile device or a mobile terminal.
As illustrated, wireless device 1010 includes antenna 1011, interface 1014, processing circuitry 1020, device readable medium 1030, user interface equipment 1032, auxiliary equipment 1034, power source 1036 and power circuitry 1037. WD 1010 may include multiple sets of one or more of the illustrated components for different wireless technologies supported by WD 1010, such as, for example, GSM, WCDMA, LTE, NR, WiFi, WiMAX, or Bluetooth wireless technologies, just to mention a few. These wireless technologies may be integrated into the same or different chips or set of chips as other components within WD 1010.
Antenna 1011 may include one or more antennas or antenna arrays, configured to send and/or receive wireless signals, and is connected to interface 1014. In certain alternative embodiments, antenna 1011 may be separate from WD 1010 and be connectable to WD 1010 through an interface or port. Antenna 1011, interface 1014, and/or processing circuitry 1020 may be configured to perform any receiving or transmitting operations described herein as being performed by a WD. Any information, data and/or signals may be received from a network node and/or another WD. In some embodiments, radio front end circuitry and/or antenna 1011 may be considered an interface.
As illustrated, interface 1014 comprises radio front end circuitry 1012 and antenna 1011. Radio front end circuitry 1012 comprise one or more filters 1018 and amplifiers 1016. Radio front end circuitry 1014 is connected to antenna 1011 and processing circuitry 1020, and is configured to condition signals communicated between antenna 1011 and processing circuitry 1020. Radio front end circuitry 1012 may be coupled to or a part of antenna 1011. In some embodiments, WD 1010 may not include separate radio front end circuitry 1012; rather, processing circuitry 1020 may comprise radio front end circuitry and may be connected to antenna 1011. Similarly, in some embodiments, some or all of RF transceiver circuitry 1022 may be considered a part of interface 1014. Radio front end circuitry 1012 may receive digital data that is to be sent out to other network nodes or WDs via a wireless connection. Radio front end circuitry 1012 may convert the digital data into a radio signal having the appropriate channel and bandwidth parameters using a combination of filters 1018 and/or amplifiers 1016. The radio signal may then be transmitted via antenna 1011. Similarly, when receiving data, antenna 1011 may collect radio signals which are then converted into digital data by radio front end circuitry 1012. The digital data may be passed to processing circuitry 1020. In other embodiments, the interface may comprise different components and/or different combinations of components.
Processing circuitry 1020 may comprise a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application-specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software, and/or encoded logic operable to provide, either alone or in conjunction with other WD 1010 components, such as device readable medium 1030, WD 1010 functionality. Such functionality may include providing any of the various wireless features or benefits discussed herein. For example, processing circuitry 1020 may execute instructions stored in device readable medium 1030 or in memory within processing circuitry 1020 to provide the functionality disclosed herein.
As illustrated, processing circuitry 1020 includes one or more of RF transceiver circuitry 1022, baseband processing circuitry 1024, and application processing circuitry 1026. In other embodiments, the processing circuitry may comprise different components and/or different combinations of components. In certain embodiments processing circuitry 1020 of WD 1010 may comprise a SOC. In some embodiments, RF transceiver circuitry 1022, baseband processing circuitry 1024, and application processing circuitry 1026 may be on separate chips or sets of chips. In alternative embodiments, part or all of baseband processing circuitry 1024 and application processing circuitry 1026 may be combined into one chip or set of chips, and RF transceiver circuitry 1022 may be on a separate chip or set of chips. In still alternative embodiments, part or all of RF transceiver circuitry 1022 and baseband processing circuitry 1024 may be on the same chip or set of chips, and application processing circuitry 1026 may be on a separate chip or set of chips. In yet other alternative embodiments, part or all of RF transceiver circuitry 1022, baseband processing circuitry 1024, and application processing circuitry 1026 may be combined in the same chip or set of chips. In some embodiments, RF transceiver circuitry 1022 may be a part of interface 1014. RF transceiver circuitry 1022 may condition RF signals for processing circuitry 1020.
In certain embodiments, some or all of the functionality described herein as being performed by a WD may be provided by processing circuitry 1020 executing instructions stored on device readable medium 1030, which in certain embodiments may be a computer-readable storage medium. In alternative embodiments, some or all of the functionality may be provided by processing circuitry 1020 without executing instructions stored on a separate or discrete device readable storage medium, such as in a hard-wired manner In any of those particular embodiments, whether executing instructions stored on a device readable storage medium or not, processing circuitry 1020 can be configured to perform the described functionality. The benefits provided by such functionality are not limited to processing circuitry 1020 alone or to other components of WD 1010, but are enjoyed by WD 1010 as a whole, and/or by end users and the wireless network generally.
Processing circuitry 1020 may be configured to perform any determining, calculating, or similar operations (e.g., certain obtaining operations) described herein as being performed by a WD. These operations, as performed by processing circuitry 1020, may include processing information obtained by processing circuitry 1020 by, for example, converting the obtained information into other information, comparing the obtained information or converted information to information stored by WD 1010, and/or performing one or more operations based on the obtained information or converted information, and as a result of said processing making a determination.
Device readable medium 1030 may be operable to store a computer program, software, an application including one or more of logic, rules, code, tables, etc. and/or other instructions capable of being executed by processing circuitry 1020. Device readable medium 1030 may include computer memory (e.g., Random Access Memory (RAM) or Read Only Memory (ROM)), mass storage media (e.g., a hard disk), removable storage media (e.g., a Compact Disk (CD) or a Digital Video Disk (DVD)), and/or any other volatile or non-volatile, non-transitory device readable and/or computer executable memory devices that store information, data, and/or instructions that may be used by processing circuitry 1020. In some embodiments, processing circuitry 1020 and device readable medium 1030 may be considered to be integrated.
User interface equipment 1032 may provide components that allow for a human user to interact with WD 1010. Such interaction may be of many forms, such as visual, audial, tactile, etc. User interface equipment 1032 may be operable to produce output to the user and to allow the user to provide input to WD 1010. The type of interaction may vary depending on the type of user interface equipment 1032 installed in WD 1010. For example, if WD 1010 is a smart phone, the interaction may be via a touch screen; if WD 1010 is a smart meter, the interaction may be through a screen that provides usage (e.g., the number of gallons used) or a speaker that provides an audible alert (e.g., if smoke is detected). User interface equipment 1032 may include input interfaces, devices and circuits, and output interfaces, devices and circuits. User interface equipment 1032 is configured to allow input of information into WD 1010, and is connected to processing circuitry 1020 to allow processing circuitry 1020 to process the input information. User interface equipment 1032 may include, for example, a microphone, a proximity or other sensor, keys/buttons, a touch display, one or more cameras, a USB port, or other input circuitry. User interface equipment 1032 is also configured to allow output of information from WD 1010, and to allow processing circuitry 1020 to output information from WD 1010. User interface equipment 1032 may include, for example, a speaker, a display, vibrating circuitry, a USB port, a headphone interface, or other output circuitry. Using one or more input and output interfaces, devices, and circuits, of user interface equipment 1032, WD 1010 may communicate with end users and/or the wireless network, and allow them to benefit from the functionality described herein.
Auxiliary equipment 1034 is operable to provide more specific functionality which may not be generally performed by WDs. This may comprise specialized sensors for doing measurements for various purposes, interfaces for additional types of communication such as wired communications etc. The inclusion and type of components of auxiliary equipment 1034 may vary depending on the embodiment and/or scenario.
Power source 1036 may, in some embodiments, be in the form of a battery or battery pack. Other types of power sources, such as an external power source (e.g., an electricity outlet), photovoltaic devices or power cells, may also be used. WD 1010 may further comprise power circuitry 1037 for delivering power from power source 1036 to the various parts of WD 1010 which need power from power source 1036 to carry out any functionality described or indicated herein. Power circuitry 1037 may in certain embodiments comprise power management circuitry. Power circuitry 1037 may additionally or alternatively be operable to receive power from an external power source; in which case WD 1010 may be connectable to the external power source (such as an electricity outlet) via input circuitry or an interface such as an electrical power cable. Power circuitry 1037 may also in certain embodiments be operable to deliver power from an external power source to power source 1036. This may be, for example, for the charging of power source 1036. Power circuitry 1037 may perform any formatting, converting, or other modification to the power from power source 1036 to make the power suitable for the respective components of WD 1010 to which power is supplied.
In
In
In the depicted embodiment, input/output interface 1105 may be configured to provide a communication interface to an input device, output device, or input and output device. UE 1100 may be configured to use an output device via input/output interface 1105. An output device may use the same type of interface port as an input device. For example, a USB port may be used to provide input to and output from UE 1100. The output device may be a speaker, a sound card, a video card, a display, a monitor, a printer, an actuator, an emitter, a smartcard, another output device, or any combination thereof. UE 1100 may be configured to use an input device via input/output interface 1105 to allow a user to capture information into UE 1100. The input device may include a touch-sensitive or presence-sensitive display, a camera (e.g., a digital camera, a digital video camera, a web camera, etc.), a microphone, a sensor, a mouse, a trackball, a directional pad, a trackpad, a scroll wheel, a smartcard, and the like. The presence-sensitive display may include a capacitive or resistive touch sensor to sense input from a user. A sensor may be, for instance, an accelerometer, a gyroscope, a tilt sensor, a force sensor, a magnetometer, an optical sensor, a proximity sensor, another like sensor, or any combination thereof. For example, the input device may be an accelerometer, a magnetometer, a digital camera, a microphone, and an optical sensor.
In
RAM 1117 may be configured to interface via bus 1102 to processing circuitry 1101 to provide storage or caching of data or computer instructions during the execution of software programs such as the operating system, application programs, and device drivers. ROM 1119 may be configured to provide computer instructions or data to processing circuitry 1101. For example, ROM 1119 may be configured to store invariant low-level system code or data for basic system functions such as basic input and output (I/O), startup, or reception of keystrokes from a keyboard that are stored in a non-volatile memory. Storage medium 1121 may be configured to include memory such as RAM, ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic disks, optical disks, floppy disks, hard disks, removable cartridges, or flash drives. In one example, storage medium 1121 may be configured to include operating system 1123, application program 1125 such as a web browser application, a widget or gadget engine or another application, and data file 1127. Storage medium 1121 may store, for use by UE 1100, any of a variety of various operating systems or combinations of operating systems.
Storage medium 1121 may be configured to include a number of physical drive units, such as redundant array of independent disks (RAID), floppy disk drive, flash memory, USB flash drive, external hard disk drive, thumb drive, pen drive, key drive, high-density digital versatile disc (HD-DVD) optical disc drive, internal hard disk drive, Blu-Ray optical disc drive, holographic digital data storage (HDDS) optical disc drive, external mini-dual in-line memory module (DIMM), synchronous dynamic random access memory (SDRAM), external micro-DIMM SDRAM, smartcard memory such as a subscriber identity module or a removable user identity (SIM/RUIM) module, other memory, or any combination thereof. Storage medium 1121 may allow UE 1100 to access computer-executable instructions, application programs or the like, stored on transitory or non-transitory memory media, to off-load data, or to upload data. An article of manufacture, such as one utilizing a communication system may be tangibly embodied in storage medium 1121, which may comprise a device readable medium.
In
In the illustrated embodiment, the communication functions of communication subsystem 1131 may include data communication, voice communication, multimedia communication, short-range communications such as Bluetooth, near-field communication, location-based communication such as the use of the global positioning system (GPS) to determine a location, another like communication function, or any combination thereof. For example, communication subsystem 1131 may include cellular communication, Wi-Fi communication, Bluetooth communication, and GPS communication. Network 1143b may encompass wired and/or wireless networks such as a local-area network (LAN), a wide-area network (WAN), a computer network, a wireless network, a telecommunications network, another like network or any combination thereof. For example, network 1143b may be a cellular network, a Wi-Fi network, and/or a near-field network. Power source 1113 may be configured to provide alternating current (AC) or direct current (DC) power to components of UE 1100.
The features, benefits and/or functions described herein may be implemented in one of the components of UE 1100 or partitioned across multiple components of UE 1100. Further, the features, benefits, and/or functions described herein may be implemented in any combination of hardware, software or firmware. In one example, communication subsystem 1131 may be configured to include any of the components described herein. Further, processing circuitry 1101 may be configured to communicate with any of such components over bus 1102. In another example, any of such components may be represented by program instructions stored in memory that when executed by processing circuitry 1101 perform the corresponding functions described herein. In another example, the functionality of any of such components may be partitioned between processing circuitry 1101 and communication subsystem 1131. In another example, the non-computationally intensive functions of any of such components may be implemented in software or firmware and the computationally intensive functions may be implemented in hardware.
In some embodiments, some or all of the functions described herein may be implemented as virtual components executed by one or more virtual machines implemented in one or more virtual environments 1200 hosted by one or more of hardware nodes 1230. Further, in embodiments in which the virtual node is not a radio access node or does not require radio connectivity (e.g., a core network node), then the network node may be entirely virtualized.
The functions may be implemented by one or more applications 1220 (which may alternatively be called software instances, virtual appliances, network functions, virtual nodes, virtual network functions, etc.) operative to implement some of the features, functions, and/or benefits of some of the embodiments disclosed herein. Applications 1220 are run in virtualization environment 1200 which provides hardware 1230 comprising processing circuitry 1260 and memory 1290. Memory 1290 contains instructions 1295 executable by processing circuitry 1260 whereby application 1220 is operative to provide one or more of the features, benefits, and/or functions disclosed herein.
Virtualization environment 1200, comprises general-purpose or special-purpose network hardware devices 1230 comprising a set of one or more processors or processing circuitry 1260, which may be commercial off-the-shelf (COTS) processors, dedicated Application Specific Integrated Circuits (ASICs), or any other type of processing circuitry including digital or analog hardware components or special purpose processors. Each hardware device may comprise memory 1290-1 which may be non-persistent memory for temporarily storing instructions 1295 or software executed by processing circuitry 1260. Each hardware device may comprise one or more network interface controllers (NICs) 1270, also known as network interface cards, which include physical network interface 1280. Each hardware device may also include non-transitory, persistent, machine-readable storage media 1290-2 having stored therein software 1295 and/or instructions executable by processing circuitry 1260. Software 1295 may include any type of software including software for instantiating one or more virtualization layers 1250 (also referred to as hypervisors), software to execute virtual machines 1240 as well as software allowing it to execute functions, features and/or benefits described in relation with some embodiments described herein.
Virtual machines 1240, comprise virtual processing, virtual memory, virtual networking or interface and virtual storage, and may be run by a corresponding virtualization layer 1250 or hypervisor. Different embodiments of the instance of virtual appliance 1220 may be implemented on one or more of virtual machines 1240, and the implementations may be made in different ways.
During operation, processing circuitry 1260 executes software 1295 to instantiate the hypervisor or virtualization layer 1250, which may sometimes be referred to as a virtual machine monitor (VMM). Virtualization layer 1250 may present a virtual operating platform that appears like networking hardware to virtual machine 1240.
As shown in
Virtualization of the hardware is in some contexts referred to as network function virtualization (NFV). NFV may be used to consolidate many network equipment types onto industry standard high volume server hardware, physical switches, and physical storage, which can be located in data centers, and customer premise equipment.
In the context of NFV, virtual machine 1240 may be a software implementation of a physical machine that runs programs as if they were executing on a physical, non-virtualized machine. Each of virtual machines 1240, and that part of hardware 1230 that executes that virtual machine, be it hardware dedicated to that virtual machine and/or hardware shared by that virtual machine with others of the virtual machines 1240, forms a separate virtual network elements (VNE).
Still in the context of NFV, Virtual Network Function (VNF) is responsible for handling specific network functions that run in one or more virtual machines 1240 on top of hardware networking infrastructure 1230 and corresponds to application 1220 in
In some embodiments, one or more radio units 12200 that each include one or more transmitters 12220 and one or more receivers 12210 may be coupled to one or more antennas 12225. Radio units 12200 may communicate directly with hardware nodes 1230 via one or more appropriate network interfaces and may be used in combination with the virtual components to provide a virtual node with radio capabilities, such as a radio access node or a base station.
In some embodiments, some signalling can be effected with the use of control system 12230 which may alternatively be used for communication between the hardware nodes 1230 and radio units 12200.
With reference to
Telecommunication network 1310 is itself connected to host computer 1330, which may be embodied in the hardware and/or software of a standalone server, a cloud-implemented server, a distributed server or as processing resources in a server farm. Host computer 1330 may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider. Connections 1321 and 1322 between telecommunication network 1310 and host computer 1330 may extend directly from core network 1314 to host computer 1330 or may go via an optional intermediate network 1320. Intermediate network 1320 may be one of, or a combination of more than one of, a public, private or hosted network; intermediate network 1320, if any, may be a backbone network or the Internet; in particular, intermediate network 1320 may comprise two or more sub-networks (not shown).
The communication system of
Example implementations, in accordance with an embodiment, of the UE, base station and host computer discussed in the preceding paragraphs will now be described with reference to
Communication system 1400 further includes base station 1420 provided in a telecommunication system and comprising hardware 1425 enabling it to communicate with host computer 1410 and with UE 1430. Hardware 1425 may include communication interface 1426 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of communication system 1400, as well as radio interface 1427 for setting up and maintaining at least wireless connection 1470 with UE 1430 located in a coverage area (not shown in
Communication system 1400 further includes UE 1430 already referred to. Its hardware 1435 may include radio interface 1437 configured to set up and maintain wireless connection 1470 with a base station serving a coverage area in which UE 1430 is currently located. Hardware 1435 of UE 1430 further includes processing circuitry 1438, which may comprise one or more programmable processors, application-specific integrated circuits, field programmable gate arrays or combinations of these (not shown) adapted to execute instructions. UE 1430 further comprises software 1431, which is stored in or accessible by UE 1430 and executable by processing circuitry 1438. Software 1431 includes client application 1432. Client application 1432 may be operable to provide a service to a human or non-human user via UE 1430, with the support of host computer 1410. In host computer 1410, an executing host application 1412 may communicate with the executing client application 1432 via OTT connection 1450 terminating at UE 1430 and host computer 1410. In providing the service to the user, client application 1432 may receive request data from host application 1412 and provide user data in response to the request data. OTT connection 1450 may transfer both the request data and the user data. Client application 1432 may interact with the user to generate the user data that it provides.
It is noted that host computer 1410, base station 1420 and UE 1430 illustrated in
In
Wireless connection 1470 between UE 1430 and base station 1420 is in accordance with the teachings of the embodiments described throughout this disclosure. One or more of the various embodiments improve the performance of OTT services provided to UE 1430 using OTT connection 1450, in which wireless connection 1470 forms the last segment. More precisely, the teachings of these embodiments may improve the latency, and power consumption for a reactivation of the network connection, and thereby provide benefits, such as reduced user waiting time, enhanced rate control.
A measurement procedure may be provided for the purpose of monitoring data rate, latency and other factors on which the one or more embodiments improve. There may further be an optional network functionality for reconfiguring OTT connection 1450 between host computer 1410 and UE 1430, in response to variations in the measurement results. The measurement procedure and/or the network functionality for reconfiguring OTT connection 1450 may be implemented in software 1411 and hardware 1415 of host computer 1410 or in software 1431 and hardware 1435 of UE 1430, or both. In embodiments, sensors (not shown) may be deployed in or in association with communication devices through which OTT connection 1450 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which software 1411, 1431 may compute or estimate the monitored quantities. The reconfiguring of OTT connection 1450 may include message format, retransmission settings, preferred routing etc.; the reconfiguring need not affect base station 1420, and it may be unknown or imperceptible to base station 1420. Such procedures and functionalities may be known and practiced in the art. In certain embodiments, measurements may involve proprietary UE signaling facilitating host computer 1410's measurements of throughput, propagation times, latency and the like. The measurements may be implemented in that software 1411 and 1431 causes messages to be transmitted, in particular empty or ‘dummy’ messages, using OTT connection 1450 while it monitors propagation times, errors etc.
The communication system includes a host computer, a base station and a UE which may be those described with reference to
The communication system includes a host computer, a base station and a UE which may be those described with reference to
The communication system includes a host computer, a base station and a UE which may be those described with reference to
The communication system includes a host computer, a base station and a UE which may be those described with reference to
In general, the various exemplary embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor or other computing device, although the disclosure is not limited thereto. While various aspects of the exemplary embodiments of this disclosure may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
As such, it should be appreciated that at least some aspects of the exemplary embodiments of the disclosure may be practiced in various components such as integrated circuit chips and modules. It should thus be appreciated that the exemplary embodiments of this disclosure may be realized in an apparatus that is embodied as an integrated circuit, where the integrated circuit may include circuitry (as well as possibly firmware) for embodying at least one or more of a data processor, a digital signal processor, baseband circuitry and radio frequency circuitry that are configurable so as to operate in accordance with the exemplary embodiments of this disclosure.
It should be appreciated that at least some aspects of the exemplary embodiments of the disclosure may be embodied in computer-executable instructions, such as in one or more program modules, executed by one or more computers or other devices. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types when executed by a processor in a computer or other device. The computer executable instructions may be stored on a computer readable medium such as a hard disk, optical disk, removable storage media, solid state memory, RAM, etc. As will be appreciated by those skilled in the art, the functionality of the program modules may be combined or distributed as desired in various embodiments. In addition, the functionality may be embodied in whole or in part in firmware or hardware equivalents such as integrated circuits, field programmable gate arrays (FPGA), and the like.
The present disclosure includes any novel feature or combination of features disclosed herein either explicitly or any generalization thereof. Various modifications and adaptations to the foregoing exemplary embodiments of this disclosure may become apparent to those skilled in the relevant arts in view of the foregoing description, when read in conjunction with the accompanying drawings. However, any and all modifications will still fall within the scope of the non-limiting and exemplary embodiments of this disclosure.
Exemplary embodiments herein have been described above with reference to block diagrams and flowchart illustrations of methods and apparatuses. It will be understood that each block of the block diagrams and flowchart illustrations, and combinations of blocks in the block diagrams and flowchart illustrations, respectively, can be implemented by various means including computer program instructions. These computer program instructions may be loaded onto a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions which execute on the computer or other programmable data processing apparatus create means for implementing the functions specified in the flowchart block or blocks.
Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the subject matter described herein, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.
While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any implementation or of what may be claimed, but rather as descriptions of features that may be specific to particular embodiments of particular implementations. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable sub-combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a sub-combination or variation of a sub-combination.
It will be obvious to a person skilled in the art that, as the technology advances, the inventive concept can be implemented in various ways. The above described embodiments are given for describing rather than limiting the disclosure, and it is to be understood that modifications and variations may be resorted to without departing from the spirit and scope of the disclosure as those skilled in the art readily understand. Such modifications and variations are considered to be within the scope of the disclosure and the appended claims. The protection scope of the disclosure is defined by the accompanying claims.
Claims
1. A method performed at a network node, comprising:
- receiving, from a terminal device, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range; and
- determining whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range.
2. The method according to claim 1,
- wherein whether the terminal device is interfered is determined based on a first channel quality indicator, CQI, a first rank indication, RI, in the first report, and a second CQI, a second RI in the second report.
3. The method according to claim 2, wherein determining whether the terminal device is interfered comprises:
- mapping the first CQI, the second CQI to a first information carrying capacity, ICC, a second ICC, respectively;
- weighting the first ICC, the second ICC, based on the first RI, the second RI, respectively;
- comparing a weighted value of first ICC, and a weighted value of the second ICC;
- determining the terminal device is interfered, if a difference between the weighted value of the first ICC and the weighted value of the second ICC is bigger than a threshold; and
- determining the terminal device is not interfered, if the difference between the weighted value of the first ICC and the weighted value of the second ICC is less than or equal to the threshold.
4. The method according to claim 3,
- wherein the first CQI, the second CQI are mapped to the first ICC, the second ICC, based on a modulation manner.
5. The method according to claim 1,
- wherein the first frequency range is for a first communication technology or a second communication technology; and
- wherein at least a part of the second frequency range is for both the first communication technology and the second communication technology.
6. The method according to claim 5, wherein the first communication technology is of fifth generation, 5G, and the second communication technology is of fourth generation, 4G.
7. The method according to claim 5, further comprising:
- scheduling the terminal device to the first frequency range, if it is determined that the terminal device is interfered.
8. The method according to claim 5,
- wherein the first frequency range is included in the second frequency range.
9. The method according to claim 1, wherein a reference signal is transmitted in the first frequency range and/or the second frequency range.
10. The method according to claim 9, wherein the reference signal comprises a channel state information reference signal, CSI-RS.
11. The method according to claim 1, further comprising:
- determining a need to trigger a predetermined event associated with the terminal device;
- determining whether a configuration about the predetermined event has been received by the terminal device; and
- transmitting, to the terminal device, an indicator for the configuration, in response to that the configuration has been received by the terminal device.
12. The method according to claim 11, wherein the predetermined event comprises:
- transmitting a report about channel state of a frequency range, from the terminal device to the network node; and/or
- changing a radio frequency used by the terminal device to the frequency range.
13. The method according to claim 11, wherein the indicator is included in a field of downlink control information, DCI.
14. The method according to claim 13, wherein the indicator comprises a non-zero codepoint of a channel state information, CSI, request field.
15. The method according to claim 11, further comprising:
- determining a capability of the terminal device for storing configuration about the predetermined event; and
- transmitting, to the terminal device, the configuration about the predetermined event according to the capability of the terminal device, via radio resource control, RRC, reconfiguration.
16. The method according to claim 1, wherein the network node comprises a base station.
17. A method performed at a terminal device, comprising:
- transmitting, to a network node, a first report about channel state of a first frequency range, and a second report about channel state of a second frequency range;
- wherein the network node determines whether the terminal device is interfered in any of the first frequency range or the second frequency range, based on a comparison between the channel state of the first frequency range and the channel state of the second frequency range.
18. The method according to claim 17,
- wherein whether the terminal device is interfered is determined based on a first channel quality indicator, CQI, a first rank indication, RI, in the first report, and a second CQI, a second RI in the second report.
19. The method according to claim 18,
- wherein the network node maps the first CQI, the second CQI to a first ICC, a second ICC, respectively;
- wherein the network node weights the first ICC, the second ICC, based on the first RI, the second RI, respectively;
- wherein the network node compares a weighted value of first ICC, and a weighted value of the second ICC;
- wherein the network node determines the terminal device is interfered, if a difference between the weighted value of the first ICC and the weighted value of the second ICC is bigger than a threshold; and
- wherein the network node determines the terminal device is not interfered, if the difference between the weighted value of the first ICC and the weighted value of the second ICC is less than or equal to the threshold.
20. The method according to claim 19,
- wherein the first CQI, the second CQI are mapped to the first ICC, the second ICC, based on a modulation manner.
21. The method according to claim 17,
- wherein the first frequency range is for a first communication technology or a second communication technology; and
- wherein at least a part of the second frequency range is for both the first communication technology and the second communication technology.
22. The method according to claim 21, wherein the first communication technology is of fifth generation, 5G, and the second communication technology is of fourth generation, 4G.
23. The method according to claim 21,
- wherein the terminal device is scheduled to the first frequency range, if it is determined that the terminal device is interfered.
24. The method according to claim 21,
- wherein the first frequency range is included in the second frequency range.
25. The method according to claim 17, wherein a reference signal is transmitted in the first frequency range and/or the second frequency range.
26-37. (canceled)
Type: Application
Filed: Jun 24, 2020
Publication Date: Jul 13, 2023
Inventors: Yi Wang (Beijing), Zhi Ge (Beijing), Huaisong Zhu (Beijing)
Application Number: 17/920,452
