Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may identify location data associated with a physical location of the transmitting device. The transmitting device may identify a time-frequency resource within a slot, the time-frequency resource corresponding to at least a portion of the location data associated with the physical location of the transmitting device. The transmitting device may generate a sequence based at least in part on the portion of the location data, or the slot, or the time-frequency resource, or a combination thereof. The transmitting device may encode a signal using the sequence. The transmitting device may transmit the signal using the identified time-frequency resource to indicate the physical location of the transmitting device.

Abstract: Embodiments of this application relate to a resource configuration method, a terminal device, and a network device. The method includes: determining a frequency domain offset between a plurality of transmission resource chunks allocated by a network device, where the frequency domain offset is a frequency domain offset between a first transmission resource chunk and a second transmission resource chunk, and the first transmission resource chunk and the second transmission resource chunk are any two consecutive resource chunks on an uplink transmission in the plurality of transmission resource chunks; and determining the plurality of transmission resource chunks according to the frequency domain offset, wherein the plurality of transmission resource chunks are configured for a frequency hopping transmission.

Abstract: Certain aspects of the present disclosure relate generally to wireless communications systems, and more particularly, to improving efficiency of bandwidth part (BWP) switching.

Abstract: [Object] To achieve communication between terminal devices in a more preferred aspect even in a situation in which wireless access technologies in which definition of resources is different are multiplexed in a communication system in which a base station device and terminal devices communicate with each other. [Solution] A communication device includes: a communication unit configured to perform wireless communication; a control unit configured to allocate a resource to each of a first channel for transmitting control information and a second channel for transmitting data in communication between a plurality of terminal devices; and a notification unit configured to notify at least any terminal device among the plurality of terminal devices of information regarding the resource.

Abstract: A terminal device for a wireless communication network is configurable with a plurality of transmission time intervals. An example method comprises: receiving a grant message comprising an indication of radio resources in which the terminal device can transmit one or more wireless messages, the radio resources being configured according to a first transmission time interval of the plurality of transmission time intervals; determining the presence of data to transmit, the data being associated with a logical channel; determining a maximum transmission time interval associated with the logical channel; and, responsive to a determination that the maximum transmission time interval associated with the logical channel is less than the first transmission time interval, transmitting a scheduling request message. The scheduling request message is configured according to a second transmission time interval of the plurality of transmission time intervals, shorter than the first.

Abstract: Accordingly the embodiments herein provide a method for provisioning Minimum System Information (MSI) for User Equipment (UE) in a wireless communication system. The method includes decoding Primary Broadcast Channel (PBCH) to acquire a first Master Information Block (MIB) periodically transmitted by base station. Further, the method includes determining to perform one of bar a cell from which the first MIB is acquired for a pre-determined period of time and acquire second MIB transmitted on Secondary Broadcast Channel (SBCH) by base station based on cell barring indication received in the first MIB. Furthermore, the method includes transmitting a request message to the base station to obtain at least one SI block of the OSI. In some embodiments, the method includes receiving a list of system configuration indexes (SCIs) and corresponding configuration of SI blocks, from the base station based on SI storage capability of the UE indicated to the base station.

Abstract: Embodiments of this application provide a signal transmission method and apparatus. The method includes: receiving, by a terminal device, configuration information sent by a network device, where the configuration information is used to instruct the terminal device to send a reference signal, and a resource used to transmit the reference signal is determined based on a public cell identity of a cell to which the terminal device belongs; and sending, by the terminal device, the reference signal based on the configuration information by using the resource. According to the signal transmission method and apparatus in the embodiments of this application, an existing reference signal can be used to perform interference/channel measurement between terminal devices, so that a terminal device on a receiving side can distinguish between interference cells while reference signal utilization is improved.

Abstract: Various aspects of the present disclosure generally relate to wireless communication in a shared spectrum. In some aspects, a user equipment may receive an indication of a set of starting offsets for an uplink communication, wherein the set of starting offsets includes at least one negative starting offset relative to a start of a slot or a mini-slot in which the uplink communication is configured to start; select a starting offset from the set of starting offsets; and transmit the uplink communication, wherein the uplink communication starts at a time indicated by the selected starting offset. Numerous other aspects are provided.

Abstract: A wireless communication system comprises: a setting notifying means for notifying, to a radio terminal, setting information related to at least one of the radio terminal's collection of measurement information and the radio terminal's reporting of the measurement information to a radio network; a status notifying means for notifying, to the radio network, a status related to at least one of the radio terminal's collection of the measurement information and the radio terminal's reporting of the measurement information; and a re-establishing means for receiving the status and determining whether to re-establish the setting information.

Abstract: A base station and user equipment with prioritized transmission considerations are provided. The base station generates an RRC configuration message for a user equipment. The RRC configuration message includes a first information element regarding a PHY layer, wherein the first information element is related to a DCI format for a specific indication, and the specific indication is related to a prioritized transmission mode. The RRC configuration message further includes a second information element regarding a MAC layer, wherein the second information element defines a transmission restriction of each of a plurality of logical channels, and at least one of the transmission restrictions corresponds to the prioritized transmission mode. The base station further transmits the RRC configuration message to the user equipment. The user equipment receives the RRC configuration message from the base station and reads the first information element and the second information element from the RRC configuration message.

Abstract: A wireless device receives one or more radio resource control (RRC) messages comprising configuration parameters. The configuration parameters indicate a first secondary cell (SCell) group comprising one or more first cells and a second SCell group comprising a plurality of second cells. The wireless device activates, in a non-dormant state, the one or more first cells and the plurality of second cells. In response to receiving a downlink control information indicating transitioning the first SCell group to a dormant state, the wireless device transitions the one or more first cells to the dormant state and maintains the plurality of second cells in the non-dormant state.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that the UE is to switch from a first active bandwidth part to a second active bandwidth part; determine a configuration for a second reference signal of the second active bandwidth part based at least in part on a configuration for a first reference signal of the first active bandwidth part; and receive the second reference signal based at least in part on the configuration for the second reference signal. Numerous other aspects are provided.

Abstract: A processing method for secondary cell state transition and a communication device are provided. The method includes: acquiring state indication information of a secondary cell; and determining whether a state transition of a secondary cell configured with PUCCH resources to a third state is permitted based on the state indication information, or determining whether a configuration of PUCCH resources for a secondary cell in the third state is permitted based on the state indication information.

Abstract: A method is accordingly provided for operating an ultrasonic sensor, a plurality of measuring cycles being successively carried out. In each measuring cycle—an electroacoustic transducer of the ultrasonic sensor is excited using an excitation pulse, causing it to mechanically oscillate, as a result of which a measuring signal is transmitted by the transducer, an echo signal is received by the transducer, and a piece of object information is ascertained from the echo signal. The frequency curve of the excitation pulse is differentiated into two measuring cycles successively carried out at least at the end of the frequency curve. The ascertained pieces of object information from at least two measuring cycles are compared with one another and an interference is identified as a function of the result of the comparison.

Abstract: A communication apparatus according to the present disclosure includes: an allocation controller configured to determine to preferentially allocate the radio resources to a control target flow over other flows in an emergency period, which is from a predetermined timing to a transmission deadline of the control target flow, of a transmission period of the control target flow in the radio terminal; and a calculation unit configured to calculate an amount of data that the radio terminal should transmit in a normal period, which is from an occurrence of the control target flow to the predetermined timing, in such a way that transmission of data of an entire control target flow is completed in the emergency period.

Abstract: A communication method and system that combine the internet of things (IoT) technology with fifth generation (5G) communication systems supporting a higher data rate after fourth generation (4G) systems are provided. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart or connected cars, healthcare, digital education, retail businesses, and security and safety related services on the basis of 5G communication technologies and IoT related technologies. A method of a terminal in a wireless communication system to improve DMRS channel estimation performance is provided.

Abstract: Methods, systems, and devices for wireless communications are described. A base station may configure a secondary component carrier (CC) for a user equipment (UE) which is not aligned on a valid channel raster entry. The location of the secondary CC may be indicated based on a reference location relative to another frequency or another CC. The reference location of the secondary CC may be the center of the new CC, an edge of the secondary CC, the position of a subcarrier within the secondary CC, or the position of a resource. In some examples, the reference location of the secondary CC may be indicated relative a currently used CC, an arbitrary channel entry, or an absolute frequency location. In some examples, the relative location may be provided in resource blocks or subcarriers and the subcarrier spacing (SCS). The base station may indicate the width of the secondary CC to the UE.

Abstract: Wireless communications systems and methods related to communications in a network that supports data transmitted in an unlicensed frequency band and a licensed frequency band are provided. A first wireless communication device communicates, with a second wireless communication device, a configuration indicating a first resource in an unlicensed frequency band and a second resource in a licensed band. The first wireless communication device communicates, with the second wireless communication device in the unlicensed frequency band, a first communication signal based on the configuration. The first wireless communication device communicates with the second wireless communication device in the licensed frequency band, a second communication signal based on at least one of a channel status of the unlicensed frequency band or a transmission parameter associated with at least one of the first communication signal or the second communication signal.

Abstract: A radio access node or wireless device performs LBT on a channel and dynamically determines a transmission starting point on the channel, based on whether the LBT succeeds before or after a slot boundary between a slot n and a previous slot n?1. In response to determining that the LBT succeeds before the slot boundary, a transmission scheduled for the slot n is extended to start earlier, in the previous slot n?1. Otherwise, in response to determining that the LBT succeeds after the slot boundary, either a transmission scheduled for a next slot n+1 is extended to start earlier, in the slot n, or a transmission scheduled for the a second mini-slot of the slot n is extended to start earlier, in a first mini-slot of the slot n.

Abstract: Provided are a method and a device for configuring and transmitting a synchronization signal in an NR system. The method includes configuring one or more synchronization signals to be transmitted within an entire bandwidth, and transmitting the configured one or more synchronization signals through the entire bandwidth.

Abstract: This application provides an information transmission method and a communications apparatus. The method includes: receiving downlink control information DCI, where the DCI includes indication information, the indication information indicates at least one demodulation reference signal DMRS antenna port group and layer information of downlink data, the at least one DMRS antenna port group is one or more of a plurality of DMRS antenna port groups, and DMRS antenna ports in a same DMRS antenna port group satisfy a quasi co-location QCL relationship; and determining, based on the indication information, a DMRS antenna port occupied by the downlink data. According to embodiments of this application, a DMRS antenna port can be indicated when DMRS antenna ports are grouped.

Abstract: One embodiment of the present invention is a method for user equipment transmitting a physical sidelink shared channel (PSSCH) in a wireless communication system, the method for transmitting a PSSCH comprising the steps of: performing sensing on an m number of subframes indicated by upper layer signaling from among an n number of subframes in a sensing window; repeating sensing of the m number of subframes at an interval of the n number of subframes within the sensing window; selecting, as a transmission resource, the m number of subframes from among the n number of subframes within a selection window, on the basis of the result of sensing the m number of subframes; and transmitting the PSSCH through the m number of subframes selected as the transmission resource.

Abstract: Provided is a wireless communication terminal. The wireless communication terminal includes a transceiver configured to transmit and receive a wireless signal and a processor configured to control an operation of the wireless communication terminal. The processor collects data to be transmitted to a plurality of terminals, generates an aggregate-MAC protocol data unit for transmitting data to the plurality of terminals at the same time, and transmits the aggregate-MAC protocol data unit to the plurality of terminals.

Abstract: There is disclosed a method of operating a transmitting node in a millimeter-wave communication network. The method includes transmitting communication signaling in a transmission timing structure, the communication signaling including control signaling and data signaling, the communication signaling further comprising reference signaling common to the control signaling and data signaling. The disclosure also pertains to related devices and methods.

Abstract: A Road Side Unit (RSU) for providing V2X services is partitioned into a Central Unit (RSU-CU) and Distributed Units (RSU-DUs). The RSU communication with User Equipment (UE) carries out via the RSU-DU, while using a cellular technology and implementing at least a Radio Resource Control protocol within the RSU-CU, and implementing at least a Medium Access Control and at least a part of Physical Layer within each RSU-DU. Frequency resources for sidelink operation are conveyed over a logical interface between RSU-CU and RSU-DU. The RSU performs radio communications with the UE in accordance with selected time-frequency resources within the configured frequency resources.

Abstract: The present disclosure provides a transmission method for a common message and a device, which relates to a field of communication technologies and is invented for effectively ensuring that both a low cost MTC terminal and a normal LTE terminal may reliably receive the common message. The method for the common message includes: determining, by a network device, common message transmission time instances X corresponding to a terminal device, wherein the common message transmission time instances X are a part of cell common message transmission time instances; and transmitting, by the network device, a common message at the common message transmission time instances X corresponding to the terminal device. The present disclosure may be used in an M2M application based on an LTE network.

Abstract: A system includes a modulator, a repetition module, and a phase rotation module. The modulator is configured to (i) modulate data using a first modulation scheme and dual sub-carrier modulation, and (ii) generate modulated symbols for transmission on a plurality of subcarriers. The dual sub-carrier modulation modulates the same information on a pair of subcarriers. The repetition module is configured to repeat the modulated symbols from a first half of the plurality of subcarriers to a second half of the plurality of subcarriers. The phase rotation module is configured to rotate phase of the modulated symbols on selected subcarriers of the second half of the plurality of subcarriers. The selected subcarriers of the second half of the plurality of subcarriers include at least one half of the second half of the plurality of subcarriers.

Abstract: The disclosure relates to a communication technique for convergence of a 5G communication system for supporting a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The disclosure may be applied to an intelligent service (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security- and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. A method is provided for receiving a CSI-RS in a communication system.

Abstract: An embodiment of the present invention relates to a method for receiving, by a terminal, a signal of another terminal by using a time resource pattern of transmission (T-RPT) in a wireless communication system, the method comprising the steps of: determining subframes through which the another terminal transmits data, by applying a T-RPT bitmap to subframes within a physical sidelink control channel (PSCCH) period; and receiving D2D data from at least some of the subframes through which the another terminal transmits data, wherein when the terminal has received first information within the PSCCH period, the terminal switches subframes into a sleep mode according to the first information even though the T-RPT bitmap indicates that data is to be transmitted through the subframes.

Abstract: A method for Channel State Information (CSI) reporting includes a User Equipment (UE) receiving a Channel State Information (CSI) reporting configuration from a base station (BS) on a first Bandwidth Part (BWP), receiving a first BWP switch indication from the BS on the first BWP, switching an active BWP of the UE from the first BWP to a second BWP, reserving the CSI reporting configuration after switching the active BWP, receiving a second BWP switch indication on the second BWP or a third BWP after switching the active BWP, switching the active BWP back to the first BWP, and automatically sending a CSI report based on the CSI reporting configuration without receiving any CSI reporting activation command from the BS after switching the active BWP back to the first BWP.

Abstract: The present disclosure discloses a method for resource selection in D2D communication and a terminal device, the method includes: performing, by a physical layer of a first terminal device, sensing in a first resource pool on a first carrier within a time interval [n+T1, n+T2] to obtain a first resource set, and resources in the first resource set can be used for the first terminal device to transmit a target service, where n is a time when the target service arrives, or a time when the first terminal device determines that performing sensing is required, 0?T1<T2; and reporting, by the physical layer of the first terminal device, information of the first resource set to a higher layer of the first terminal device. Therefore, the terminal device can obtain transmission resources for transmitting the target service when the available resources are insufficient for resource selection.

Abstract: A user apparatus in a radio communication system including a base station and the user apparatus includes: a receiver unit configured to receive, from the base station, first designation information for designating a resource group including a plurality of resources each including a bandwidth of a predetermined number of resource blocks and second designation information for designating allocation resources in the resource group; and a communication unit configured to perform data communication using the allocation resources designated by the second designation information in the resource group designated by the first designation information.

Abstract: The present invention is provided with: a radio resource control layer processing unit (16) configured to configure the number of PDCCH candidates configured in a dedicated control resource set, based on RRC signaling; a receiver (10) configured to monitor the multiple PDCCH candidates in the dedicated control resource set; and a decoding unit configured to decode the PDCCH candidates. a first number of the PDCCH candidates are monitored in the dedicated control resource set in a time period in which a common control resource set is not configured, a second number of the PDCCH candidates are monitored in the dedicated control resource set in a time period in which the common control resource set is configured, and a third number of the PDCCH candidates are monitored in the common control resource set. The sum of the second number and the third number is equal to the first number.

Abstract: Systems and methods for Orthogonal Frequency-Division Multiple Access (OFDMA) optimized steering in Wi-Fi networks. The present disclosure contemplates operation in a multiple access point network utilizing OFDMA technology, e.g., IEEE 802.11ax, where clients are connected to the access points considering the effect on OFDMA operation depending on where the clients are connected. That is, the present disclosure considers OFDMA operation in the context of optimization in a distributed or multiple access point network. The optimization decision is based on capabilities of client devices and/or the access points, including OFDMA capability, MIMO capability, channel capability, etc. The optimization decision is used to select where client devices should connect, and optimization factors may include individual device throughput, joint load throughput (system capacity), fairness, etc.

Abstract: An electronic device, a radio communication method, and a computer readable storage medium. The electronic device comprises a processing circuit, and is configured to use a group common-physical downlink control channel (GC-PDCCH) to transmit control information relating to data in a time slot preceding a time slot of the GC-PDCCH. In the invention, a GC-PDCCH can be better designed according to characteristics of an NR communication system.

Abstract: A method, network node and wireless device for receiving and/or mapping a physical downlink control channel, PDCCH, to resource elements of a time-frequency grid are provided in which the PDCCH is mapped to resource elements of the time-frequency grid by configuring resource element groups, REGs, each REG spanning one orthogonal frequency division multiplex, OFDM, symbol, and the PDCCH being at least two OFDM symbols. In accordance with one embodiment, the method includes receiving the PDCCH from the network node on one of a plurality of sets of physical resource blocks, PRBs.

Abstract: Embodiments include apparatuses, methods, and systems that may be used in a UE in a mobile communication network to communicate with a gNB. An apparatus may include a memory and processing circuitry coupled with the memory. The processing in circuitry may cause coarse time and frequency synchronization information, obtained from primary and secondary synchronization signals (PSS/SSS), to be stored in the memory. Based on the coarse time and frequency synchronization information, the processing circuitry may decode a physical broadcast channel to obtain a first system information, and may acquire a second system information based on the first system information. Based on the first and second system information, the processing circuitry may cause a transmission of a PRACH, to trigger a transmission of a TRS by the gNB. Other embodiments may also be described and claimed.

Abstract: Various embodiments provide a method for receiving reference signal and a method for sending a reference signal. In those embodiments, a terminal device can determine a location of a resource element to which a reference signal is mapped. The terminal device can determine a reference signal sequence corresponding to the resource element. The index of each element in the reference signal sequence is determined based on a resource block index of a resource block corresponding to the resource element, a quantity of resource elements that carry the reference signal in the resource block, a resource block offset, or an inter-symbol offset. The terminal device can receive the reference signal by using the resource element, and performing channel estimation or channel sounding based on the received reference signal and the reference signal sequence. Therefore, the terminal device can complete channel estimation without learning of a system bandwidth.

Abstract: A base station apparatus is capable of adjusting antenna gains in a horizontal direction and a vertical direction of the plurality of antennas included in the base station apparatus, by adjusting a phase and an amplitude of a signal addressed and transmitted to a terminal apparatus, stores a codebook which is shared with the terminal apparatus and describes a plurality of linear filters associated with antenna gains in the horizontal direction and antenna gains in the vertical direction, acquires control information indicating at least one out of a plurality of linear filters described in the codebook, of which notification is sent from the terminal apparatus, performs precoding on the signal addressed to the terminal apparatus, based on the control information and the first codebook, and transmits the signal subjected to the precoding.

Abstract: A method and an apparatus for transmitting uplink demodulation reference signals (DMRSs) is provided. The method includes a user equipment (UE) determines an uplink DMRS format for demodulating a physical uplink shared channel (PUSCH) according to frequency-domain resources occupied by the PUSCH, in which the uplink DMRS format includes a comb occupied by a PUSCH DMRS sequence. The comb is subcarriers having specified intervals occupied by demodulation reference signals, and the specified intervals between the occupied subcarriers are same. For the DMRSs using the comb format, subcarriers with specific intervals are used for channel estimation, and values of the channel estimation are used for data demodulation. The UE transmits uplink information and the demodulation reference signals on physical resources using the uplink DMRS format. The present disclosure can improve the multiplexing ratio of uplink physical resources in a multi-UE scenario.

Abstract: Disclosed are a method for transmitting/receiving an uplink signal between a base station and a terminal, and a device for supporting the same. More specifically, disclosed are a method for transmitting/receiving a signal between a terminal and a base station for the coexistence of terminals to which different transmission time intervals (TTIs) are applied when the terminals to which the different TTIs are applied send an uplink signal on the same resource, and a device for supporting the same.

Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. One embodiment of the present invention relates to a method and an apparatus for processing data in a wireless communication system.

Abstract: Methods related to wireless communication systems and the transmission of code blocks on such systems are provided. A wireless communication device interleaves a plurality of code block segments in time and frequency. The segments are interleaved by mapping a first code block segment of the plurality of code block segments to a first resource located at a first time and a first frequency, wherein the first code block segment is associated with a first code block, and mapping a second code block segment of the plurality of code block segments to a second resource based on at least one of the first time or the first frequency of the first resource and a code block proximity parameter, wherein the second code block segment is associated with a second code block different from the first code block. The device then transmits the plurality of interleaved code block segments. Other features are also claimed and described.

Abstract: The present invention discloses a method for receiving scheduling information, comprising steps of: receiving Downlink Control Information (DCI); and determining, according to a mapping relationship between configured transmission resources used for a Physical Uplink Shared Channel (PUSCH) and scheduling information in the DCI, scheduling information corresponding to the PUSCH in the DCI. Compared with the prior art, in the present invention, the scheduling information in the DCI is determined by the mapping relationship between the configured transmission resources used for transmitting the PUSCH by a UE and the scheduling information in the DCI, so that a base station can schedule all UEs for which there is a mapping relationship between PUSCH configured transmission resources and the scheduling information in DCI by sending only one piece of DCI. The scheduling overhead is reduced, the resource waste is reduced, and the efficiency of scheduling terminals by a communication system is significantly improved.

Abstract: N time-frequency resources are determined by a first communications device. Any two of the N time-frequency resources are nonconsecutive in at least one of a time domain and a frequency domain; each of the N time-frequency resources is smaller than a time-frequency resource required for transmitting to-be-transmitted data, a sum of the N time-frequency resources is greater than or equal to the time-frequency resource required for transmitting the to-be-transmitted data and N is a positive integer greater than or equal to 2. First indication information is sent on M of the N time-frequency resources. The first indication information is used to indicate that the N time-frequency resources are used to send the to-be-transmitted data, M is a positive integer less than or equal to N. The to-be-transmitted data are sent on the N time-frequency resources so that time-frequency resource utilization is improved.

Abstract: A method of transmitting data in a mobile communications network, the method comprising transmitting first data to a first mobile unit wherein transmitting the first data comprises transmitting first control information in a first time period, the first control information identifying first allocated resources for transmitting the first data in a subsequent second time period.

Abstract: An embodiment of the present application relates to a signal processing method and apparatus. The method includes: determining a plurality of signals that are quasi-co-located with a first port set of a first reference signal, wherein the first port set is used to send or receive the first reference signal, and the first port set comprises at least one port; determining a target signal among the plurality of signals; and sending or receiving the first reference signal via the first port set according to a quasi-co-location relationship between the first port set and the target signal.

Abstract: Embodiments of the present invention provide a channel transmission method, a terminal device and a network device, which can reduce overheads in resource scheduling while the flexibility is improved. The method comprises: a terminal device transmits a first channel based on a first resource in a resource set in at least two resource sets, different resource sets in the at least two resource sets respectively corresponding to different demodulation reference signal (DMRS) mapping types, the DMRS mapping types comprising a type A and a type B; the first channel being transmitted based on a DMRS mapping type corresponding to a resource set to which the first resource belongs, or the transmission of the first channel being for hybrid automatic repeat request acknowledgement (HARQ ACK) information of a second channel and the second channel being transmitted based on a DMRS mapping type corresponding to a resource set to which the first resource belongs.

Abstract: The present disclosure provides a grant-free transmission method, a user equipment, and a base station. The grant-free transmission method at a user equipment side includes: step a, sending a first multiple access signature selected by a user equipment to a base station; step b, receiving an intervention result of the base station for the user equipment; step c, determining, when the intervention result is to adopt the first multiple access signature, to adopt the first multiple access signature for data transmission; and step d, determining, when the intervention result is to adopt a second multiple access signature, to adopt the second multiple access signature for the data transmission. According to the grant-free transmission method, the user equipment, and the base station provided by the present disclosure, the collision during the grant-free transmission is avoided or reduced with less signaling overhead.

Abstract: A radio physical layer protocol data unit (PPDU) sending method includes: obtaining, a radio physical layer protocol data unit (PPDU), wherein the PPDU includes a high efficiency-signal field A (HE-SIG-A) and a high efficiency-signal field B (HE-SIG-B), the HE-SIG-A includes a field indicating a quantity of orthogonal frequency division multiplexing (OFDM) symbols in the HE-SIG-B, and wherein a value of the field indicates one of the following: that the quantity of OFDM symbols included in the HE-SIG-B is greater than or equal to 16, or the quantity of OFDM symbols included in the HE-SIG-B; and sending the PPDU.