Abstract: The present disclosure relates to methods and apparatus for wireless communication of a first node. The apparatus can receive a first signal from a second node of one or more additional nodes, the first signal including at least one first timing reference. The apparatus can also determine a second timing reference quality of a second timing reference. The apparatus can also transmit a second signal to at least one node of the one or more additional nodes, the second signal including a second timing reference. Additionally, the apparatus can broadcast, to the one or more additional nodes, an indication of a second timing reference quality of the second timing reference. The apparatus can also receive an indication of a first timing reference quality. Moreover, the apparatus can adjust the indication of the quality of the at least one timing first reference from the second node.

Abstract: The present disclosure provides a PDCCH monitoring method, a UE and a network side device. The PDCCH monitoring method includes: acquiring one or more bits in DCI transmitted through a first PDCCH monitored by the UE, the one or more bits in the DCI of the first PDCCH indicating a PDCCH not to be monitored and/or a PDCCH to be monitored; and determining the PDCCH not to be monitored and/or the PDCCH to be monitored in accordance with the one or more bits in the DCI of the first PDCCH.

Abstract: A device to device (D2D) communication method includes: receiving, by user equipment (UE), resource pool configuration information, where the resource pool configuration information includes frequency domain resource location information and time domain resource location information and the frequency domain resource location information includes a frequency domain resource pool indicator and a frequency domain spacing between two consecutive device to device D2D resources; determining, by the UE, an available frequency domain resource based on the resource pool configuration information; and performing, by the UE, D2D communication on the available frequency domain resource.

Abstract: Embodiments of the present disclosure provide a method and apparatus for configuring multi-level cells or cell clusters and a communications system. The method includes: exchanging by a base station with one or more other base stations or cell cluster heads in the same level to obtain first information; receiving, by the base station, second information reported by one or more base stations or cell cluster heads in the lower level; configuring one or more cells in the lower level into a cell cluster by the base station according to the first information and the second information, and determining a cluster head of the cell cluster; and performing information transmission with the cluster head of the cell cluster.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to perform receiving, by a network device, information comprising a multiple transmission time interval uplink grant with cyclic redundancy check bits scrambled by a radio network temporary identifier; determining, by the network device of a communication network, a subset of data transmissions of a previous burst of data transmissions to be retransmitted by the network device; and performing by the network device retransmission of the subset of data transmissions using scheduled resources of the uplink grant.

Abstract: A method for transmitting an uplink signal by a terminal in a wireless communication system according to the present invention comprises the steps of: receiving a downlink signal from a base station; receiving downlink control information (DCI) for requesting transmission of an uplink signal corresponding to the downlink signal, from the base station; and transmitting, to the base station, a response to the downlink signal on the basis of a message, wherein the DCI includes at least one among an ACK window field, a DAI field, and an ACK request field for requesting the response to the downlink signal.

Abstract: A system and method for transmitting still images and a video feed from an unmanned aerial vehicle to a ground station is disclosed. The system includes an aircraft including a digital video camera to capture still images and video frames of an object. A video encoder is coupled to the camera to provide a video output including video packets. A file server is coupled to the camera to provide a still image output including image data packets. A multiplexer is coupled to the video output and the still image output. The multiplexer produces a data transmission including the video packets and the image data packets. A transmitter sends the data transmission to the ground station. The ground station receives the data transmission and demultiplexes the packets into separate video and image data packets. The ground control station may select the ratio the video stream images in relation to the still image to be transmitted from the aircraft.

Abstract: A repeater system, preferably including one or more radio transceivers, such as a 5G NR transceiver configured to communicate with other elements of a 5G NR communication network such as user equipment and/or gNBs, and a signal processor. A method for repeater operation, preferably including determining synchronization information, operating in a synchronized repeater mode, and maintaining synchronization (such as by monitoring periodic signal timing and adjusting operation timing based on the monitoring), and optionally including operating in a fallback repeater mode.

Abstract: A communication system is disclosed comprising a gateway and a number of base stations communicating, via the gateway, in accordance with a base station to base station application protocol. The gateway receives a message from a first base station, destined for a second base station. The message comprises (a) information for the second base station, in a first part of the message; and (b) an identifier of the second base station, in a second part of the message other than the first part. The gateway can obtain from the received message the second base station's identifier without the gateway being required to obtain the information from the first part of the message. The gateway routes the message to the second base station identified by the obtained identifier.

Abstract: Certain aspects of the present disclosure provide techniques for new radio (NR) communications in narrowband regions of unlicensed spectrum. A method that may be performed by a user equipment (UE) includes determining, using an energy detector (ED), that received energy in a first bandwidth (BW) is lower than a threshold; and transmitting, in response to determining that received energy in the first BW is lower than the threshold, a first uplink (UL) transmission to a base station (BS) in a second BW smaller than the first BW and contained within the first BW.

Abstract: A method for configuring a time division duplex (TDD) of a user equipment in a communication system, according to one embodiment of the present invention, comprises the steps of: receiving from a base station a first TDD configuration; receiving from the base station a message including information related to a dynamic TDD configuration; receiving a second TDD configuration according to the received information related to the dynamic TDD configuration; receiving from the base station an uplink grant; and determining whether to apply the first TDD configuration or the second TDD configuration based on a method by which the unlink grant is received. According to one embodiment of the present invention, the advantages of configuring a shorter cycle of the TDD to the user equipment supporting the TDD in a wireless communication system, and rapidly configuring the TDD to the user equipment variably according to a communication situation are provided.

Abstract: A method performed in a system comprising a joint traffic direction scheduler configured to coordinate time-division-duplexing (TDD) transmissions for multiple cells comprises obtaining TDD operation information from each of the cells, determining, based on the obtained TDD operation information, a transmission direction to be used by each of the cells during one or more transmission time intervals (TTIs), and indicating to the cells the determined transmission direction.

Abstract: A method includes receiving, at a mobile device, resource pool configuration information, the resource pool configuration information comprising a bitmap to determine the resource pool and determining, for a period having a plurality of consecutive subframes, a first subset of subframes by excluding, from the plurality of consecutive subframes, subframes in which a sidelink synchronization signal (SLSS) resource is configured and subframes other than uplink subframes. The method also includes determining, for the period, a second subset of subframes by excluding, from the first subset of subframes, one or more subframes, wherein a quantity of the second subset of subframes corresponds to an integer multiple of a length of the bitmap, and determining, based on a plurality of repetitions of the bitmap, the resource pool for a sidelink transmission from the second subset of subframes.

Abstract: A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.

Abstract: Embodiments of this application provide a wireless communications method and device, to perform appropriate power control on an SRS. The method includes: determining a closed-loop power control parameter for a sounding reference signal SRS resource group according to a first uplink signal or a first downlink signal corresponding to the SRS resource group; determining a target transmit power for the SRS resource group according to the closed-loop power control parameter; and sending an SRS to a network device on an SRS resource in the SRS resource group according to the target transmit power.

Abstract: For downlink control, a method receives by use of a processor, at User Equipment, a control channel with a first aggregation level in a Transmission Time Interval. The method attempts to decode the control channel. In response to the control channel being successfully decoded, the method determines a first downlink control information (DCI) with a first number of bits based on the received control channel; determines whether to decode the first DCI to determine a second DCI with a second number of bits based on the first DCI; and determines the second DCI with a second number of bits based on the decoded first DCI if determined to decode the first DCI. The method transmits data according to the second DCI if the second DCI is an uplink grant. The method receives data according to the second DCI if the second DCI is a downlink assignment.

Abstract: A method of performing an operation for a first user equipment (UE) in a wireless communication system includes transmitting a physical sidelink shared channel (PSSCH) to a second UE by the first UE, and transmitting, to a base station (BS), feedback information based on a physical sidelink feedback channel (PSFCH) for the PSSCH on a physical uplink control channel (PUCCH) by the first UE. A transmission timing of the PUCCH is determined based on information about the number of slots from the PSFCH to the PUCCH.

Abstract: A scheduling method implements flexible scheduling in a relay network. A method includes: determining, by a first device, information about a transmission time difference, where the transmission time difference is a time difference between a control channel of a first link and a data channel that is of the first link and that is scheduled by the control channel of the first link; notifying a second device of the information about the transmission time difference; and performing, by the second device, scheduling based on the information about the transmission time difference. In this way, the second device determines whether a resource needs to be reserved for the data channel of the first link, and it is possible that a time division resource, a frequency division resource, or a space division resource is shared for data of the first link and data of a second link.

Abstract: Apparatuses, methods, and systems are disclosed for data acknowledgment. One apparatus includes a transmitter that transmits data to a device. The apparatus may include a processor that determines a response window having multiple subframes for receiving an acknowledgement corresponding to the data. The apparatus may include a receiver that receives the acknowledgement within the response window.

Abstract: Provided in the embodiments of the present disclosure are a communication method and system. The method at least includes: determining a base sequence that a second communication node uses to send a reference signal; and receiving the reference signal that is sent by the second communication node using the base sequence.

Abstract: A frequency spectrum management device includes a processing circuit configured to acquire, with regard to a position of a primary user sample, a plurality pieces of sample information, each of the plurality pieces of sample information comprising information of a plurality of secondary user samples, and an aggregate interference generated by the plurality of secondary users on the primary user sample; and training a neural network model by taking the information of the plurality of secondary user samples as an input of the neural network model and taking the aggregate interference generated by the plurality of secondary user samples on the primary user sample as an output of the neural network model, so as to determine a parameter set of the neural network model corresponding to the position of the primary user sample.

Abstract: A technology is described for a repeater. The repeater can be configured to: receive an access level indicator from a spectrum access system (SAS) for a selected contested frequency band; identify one or more sub-bands available to the repeater in the selected contested frequency band based on the access level indicator; and activate the repeater for the one or more sub-bands when the access level permits repeater access.

Abstract: The present application is related to a method and apparatus of using redundant bits in semi-statically configured HARQ-ACK feedback. A method of receiving information according to one embodiment comprises receiving a first number of code block groups from a base unit, wherein each code block within a code block group is independently decodable; determining a (HARQ-ACK) codebook size corresponding to the first number of code block groups; and transmitting a HARQ-ACK codebook to the base unit, wherein the HARQ-ACK codebook comprises the first number of HARQ-ACK bits with each bit corresponding to one code block group and a second number of padded bits. The first number plus the second number is equal to the determined HARQ-ACK codebook size. The present application enhances the downlink (DL) transmission performance and the uplink (UL) HARQ-ACK transmission reliability.

Abstract: A method and apparatus are provided for delivering user equipment (UE) new radio (NR) security capabilities and mobility management entity interworking. In the embodiments, adding the UE NR security capabilities in a new information element over a non-access stratum (NAS) is compatible with a legacy mobility management entity and eliminate any potential of bidding-down attack and is more advantageous and serves the security solution better. As long as the UE is connected to the long term evolution (LTE) and all UE security capabilities including LTE security capabilities have been replayed correctly and successfully in the NAS security mode command (SMC) message, the UE may not consider the absence of the UE NR security capabilities in the NAS SMC as a security vulnerability.

Abstract: The present invention is designed to maximize the amount of radio resources that can be used in DL, UL or SL in a subframe containing a given DL signal or UL resource. A user terminal has a receiving section that receives downlink control information, and a control section that controls communication by switching between UL communication and DL communication within a subframe based on the downlink control information, and, in a subframe including a signal or a resource in a given communication direction, the control section switches communication in a direction different from the communication direction of the signal or the resource.

Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data rate than a 4G communication system such as LTE. According to an embodiment of the present invention, a method for a first base station in a first communication system comprises the steps of: identifying information related to a resource which can be used by a second base station in a second communication system; generating a message including the information related to the resource which can be used by the second base station; and transmitting the signal to the second base station.

Abstract: To solve the above-mentioned problem, the method for transmitting and receiving a signal by user equipment (UE) through one or more cells, according to one embodiment of the present specification, comprises the steps of: receiving, from a base station, a first message indicating whether one or more cells usable by the UE are enabled; determining which cells to enable or disable on the basis of the first message; and enabling or disabling the selected cells. According to the embodiment of the present specification, by aggregating carriers amongst different base stations, a possibility for the UE to transmit and receive high-speed data through carrier aggregation can increase.

Abstract: According to embodiments described herein there is provided methods and apparatus for providing communications to a wireless device using device-to-device communication with an unmanned vehicle. A method in a wireless device comprises establishing a device-to-device, D2D, wireless connection to the unmanned vehicle; and responsive to receiving an operation command over the D2D wireless connection, performing an operation. A method in an unmanned vehicle comprises determining a current location of a wireless device; travelling to within a wireless range of the current location of the wireless device; establishing a device-to-device, D2D, wireless connection with the wireless device; and transmitting an operation command to the wireless device over the D2D wireless connection to instruct the wireless device to perform an operation.

Abstract: Systems, methods, and instrumentalities are disclosed for Uplink operation in LTE unlicensed spectrum (LTE-U). A wireless transmit/receive unit (WTRU) may receive licensed assisted access (LAA) configuration information, e.g., for a first cell from a second cell. The first cell may be associated with operation in an unlicensed band, and the second cell may be associated with operation in a licensed band. The WTRU may determine whether a first subframe is a sounding reference signal (SRS) subframe for the first cell. If the first subframe is an SRS subframe for the first cell, the WTRU may determine SRS resources for the first subframe and determine whether the WTRU is triggered to transmit an SRS transmission in the first subframe. If it is determined the WTRU is triggered to transmit the SRS transmission in the first subframe, the WTRU may transmit the SRS transmission on the SRS resources for the first subframe.

Abstract: Methods, apparatuses, and storage medium are provided for information transmission. The method includes receiving target control information sent by a base station by means of a target downlink resource, determining a time-frequency location of the target uplink resource, and transmitting, according to the time-frequency location, response information to the base station by means of the target uplink resource, the response information being used to indicate whether user equipment (UE) has correctly received the target control information.

Abstract: A wireless device transmits a capability message indicating that the wireless device supports a first number of channel state information (CSI) processes per bandwidth part of a cell. The wireless device receives, based on the wireless device supporting the first number of CSI processes per bandwidth part, CSI configuration parameters indicating a second number of CSI processes for a first bandwidth part. CSI reports for the second number of CSI processes are transmitted.

Abstract: Methods and apparatuses for determining whether to perform transmissions or receptions. A method for a user equipment (UE) to determine whether to perform the transmissions includes receiving a n for a search space set for receptions of physical downlink control channels (PDCCHs) according to a common search space (CSS) and receiving a PDCCH that includes a downlink control information (DCI) format. The method includes determining a set of time resources and a set of frequency resources based on an indication in the DCI format and canceling a transmission of a sounding reference signal (SRS) in time resources from the set of time resources based on determining that the SRS transmission would include frequency resources from the set of frequency resources. The method includes transmitting a physical uplink control channel in time resources from the set of time resources and in frequency resources from the set of frequency resources.

Abstract: The present disclosure relates to a HARQ feedback method and device, and a method and device for determining data to be retransmitted. The HARQ feedback method includes: grouping component carriers (CCs) according to a binding rule which includes a number of resource units in the CCs that can be bundled into a group; calculating a parameter value of each CC group; generating the same number of HARQ codebooks as that of CC groups, a length of one of the HARQ codebooks being determined by a parameter value of a corresponding CC group and the maximum number of resource units in a single CC in the corresponding CC group; and feeding the HARQ codebooks back to a data sender.

Abstract: Techniques for efficient downlink control with a large number of carriers and/or TTIs are described. Techniques for blind decoding reduction may include making the search space and/or aggregation level of candidates for a first PDCCH/E-PDCCH associated with the characteristics of a second received PDCCH/E-PDCCH. Techniques may include embedding DCI for a set of serving cells and/or TTIs in a PDSCH. DCI for a set of serving cells and/or TTIs may be included in single PDCCH/E-PDCCH. To reduce overhead, carrier indicator field interpretation may be associated with the serving cell or TTI from which the PDCCH/E-PDCCH containing the downlink control information is received, or the group of cells or TTIs to which the PDCCH/E-PDCCH containing the downlink control information belongs.

Abstract: Proposed is an operation method of a first device in a wireless communication system. The method may comprise the steps of: receiving, from a base station, TDD-UL-DL configuration information including information related to a first slot pattern and information related to a second slot pattern; acquiring the number of first SL slots related to the first slot pattern and the number of second SL slots related to the second slot pattern on the basis of first SCS related to SL communication and the TDD-UL-DL configuration information; and transmitting, to a second device, a PSBCH including information related to the number of the first SL slots and information related to the number of the second SL slots.

Abstract: According to certain embodiments, a method by a wireless device for transmitting Hybrid Automatic Repeat Request (HARQ) feedback includes obtaining a Physical Uplink Control Channel (PUCCH) configuration parameter comprising a channel code type. Based on the PUCCH configuration parameter comprising the channel code type, a PUCCH format is selected for transmitting the HARQ feedback to a network node on the PUCCH, and the HARQ feedback is transmitted to the network node.

Abstract: A terminal apparatus is configured to: receive a transport block in a primary cell in a subframe i; in a case that HARQ-ACK and a positive scheduling request are transmitted, select a third transmission method in a case that a subframe j in a secondary cell does not correspond to any of first prescribed subframes, and select a fourth transmission method in a case that the subframe j corresponds to any of the first prescribed subframes; and transmit the HARQ-ACK in a PUCCH resource for a scheduling request, wherein the subframe j is given based on at least (I) whether or not a first parameter for the primary cell is configured, (II) whether or not a first parameter for the secondary cell is configured, and (III) a search space in which a PDCCH for scheduling the transport block is transmitted.

Abstract: Methods, systems, and apparatus for codebook transmission are provided. In one aspect, a method includes receiving at least one downlink transmission and indication information corresponding to the at least one downlink transmission and generating a codebook including at least one piece of feedback information corresponding to the at least one downlink transmission. The at least one downlink transmission includes a target downlink transmission corresponding to an actual occasion and a pair of a target frequency domain resource and a reference occasion. A location of feedback information corresponding to the target downlink transmission in the codebook corresponds to indication information corresponding to the target downlink transmission.

Abstract: A system and method for providing an MAP for an unsolicited grant to a modem in a wireless backhaul environment based on centralized small cell (cSC) data received at a modem termination system (MTS) is described herein.

Abstract: There is disclosed a method of operating a feedback radio node in a wireless communication network. The method includes transmitting Hybrid Acknowledgement Repeat Request, HARQ, feedback, according to a HARQ feedback timing, the HARQ feedback timing being based on one timing representation out of a set having a first timing representation and a second timing representation. The disclosure also pertains to related devices and methods.

Abstract: A method includes: configuring, by a base station, at least two types of random access resources, where the at least two types of random access resources include a first-type random access resource and a second-type random access resource; and different types of random access resources are in a one-to-one correspondence with different sending beam forms of a terminal; or the first-type random access resource is associated with resources of different downlink signals, and the second-type random access resource is not associated with the resources of the different downlink signals.

Abstract: Certain aspects of the present disclosure provide techniques for prioritizing overlapping or near overlapping uplink and downlink transmissions for a source base station (BS) and a target BS during a make-before-break handover of a user equipment (UE) from the source BS to the target BS.

Abstract: Disclosed are a method for transmitting and receiving a sounding reference signal (SRS) in a wireless communication system, and an apparatus therefor.

Abstract: A wireless access node serves a wireless User Equipment (UE) over wireless communication links that use a same time and frequency resource block. In some examples, the wireless communication links comprise Multiple Input Multiple Output (MIMO) layers. In the wireless access node, a baseband unit determines backhaul downlink quality for backhaul downlinks. Based on the backhaul downlink quality, the baseband unit selects a number of the wireless communication links for the wireless UE that will use the same time and frequency resource block. The baseband unit receives user data from the backhaul downlinks and transfers the user data to a radio. The radio wirelessly transfers the user data to the wireless UE over the selected number of the wireless communication links using the same time and frequency resource block.

Abstract: Among other things, aspects, features, and implementations of wireless mesh networks and wireless mesh network devices are described.

Abstract: Systems and methods are provided for handling different timing advance (TA) adjustment delays corresponding to different transmission time intervals (TTIs) from different serving cells under carrier aggregation or dual connectivity. A user equipment (UE) selects and implements one TA adjustment delay even if two or more serving cells transmit with different TTIs. In one embodiment, the UE uses a predetermined TA adjustment delay for each of a plurality of TA commands received from serving cells with different TTI lengths. In another embodiment, the UE uses a TA adjustment delay that is a maximum value of the TA adjustment delays for the TTIs from the different serving cells.

Abstract: Technology for an apparatus of a user equipment (UE), operable to perform a random-access procedure using a UE-specific control resource set (CORESET) is disclosed. The UE can decode a 5 message, received from the next generation node B (gNB), to perform a contention free random-access (RA) procedure. The UE can encode a random-access channel (RACH) preamble for transmission to the gNB using one or more UE-specific CORESET. The UE can decode a random-access response (RAR) received from the gNB in response to the RACH preamble transmission using the one or more UE10 specific CORESET.

Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE transmits a first radio signal, wherein the first radio signal occupies W frequency unit(s) in frequency domain, a transmit power of the first radio signal is a first power, the first power is uncorrelated with the W, the W is a positive integer, and the W is configurable. The method in the disclosure makes better use of special channel characteristics of air communication to optimize the design of reference signals, reduces the power consumption of an air terminal while ensuring a channel estimated quality, and reduces interferences to neighbor cells or to ground users in neighbor cells.

Abstract: Some of the example embodiments are directed towards a base station for determining a control timing configuration in order to provide a subframe timing setting for configuring downlink HARQ-ACK control timing for a cell serving a user equipment in a multiple cell communications network. The user equipment is served by a TDD based cell and a FDD based cell. Some example embodiments are directed towards user equipment for determining the control timing configuration as discussed above.

Abstract: Provided is a synchronization method and apparatus in a wireless communication system. A synchronization method according to an aspect of the present disclosure may include: receiving a first synchronization signal and a second synchronization signal; determining a priority order of the first synchronization signal and the second synchronization signal; and performing synchronization based on a synchronization signal having a higher priority between the first synchronization signal and the second synchronization signal.