Huawei Technologies Co., Limited

Zhengzheng Xiang

Lei Lu

Hongjia Su

Jinfang Zhang

Jun Luo

Jin Liu

Jiyong Pang

Pu Yuan

Wenting Guo

Chunxu Jiao

Jian Ding

Kelvin Kar Kin Au

Jiayin Zhang

Keyvan Zarifi

Lu Rong

Mohammadhadi Baligh

Chao Li

Amine Maaref

Peng Zhang

Jun Zhu

Tianze Li

Hua Xu

Sheng Liu

Yinghao Jin

Jian Li

Qiong Jia

Lei Huang

Weiwei Fan

Lei Dong

Dehua Zhao

Erkai Chen

A configuration information indication method and apparatus, applicable to systems such as a vehicle to everything V2X communication system and a vehicle-to-vehicle V2V communication system, to resolve a problem that SL transmission causes interference to DL transmission due to relatively poor indication accuracy of UL transmission time in the conventional technology. The method includes: receiving an uplink-downlink time division duplex TDD configuration from a network device; determining, based on first periodicity information included in the uplink-downlink TDD configuration, a first subcarrier spacing SCS corresponding to the first periodicity information, where the first SCS is used to indicate a sidelink SL reference SCS; and sending indication information to a second terminal device based on the uplink-downlink TDD configuration and the first SCS, where the indication information is used to indicate uplink UL transmission time corresponding to the first periodicity information.

Configuration information indication method and apparatus

This application provides a configuration information indication method and an apparatus, which are applicable to fields such as vehicle to everything V2X, intelligent connected vehicles, assisted driving, and intelligent driving, to resolve an existing-technology problem that SL transmission causes interference to DL transmission, and effectively reduce signaling overheads. This method is applied to a first terminal device, and includes: receiving an uplink-downlink time division multiplex TDD configuration sent by a network device; and sending indication information to a second terminal device based on the uplink-downlink TDD configuration, where the indication information is carried on a physical sidelink broadcast channel PSBCH of a sidelink synchronization signal block S-SSB, and the indication information is used to indicate periodicity information included in the uplink-downlink TDD configuration.

The method includes: determining, by a first communications device, a first BWP for each second communications device in a second communications device group, where the second communications device group includes two or more second communications devices, and the first BWPs of all the second communications devices in the second communications device group are the same; sending, by the first communications device, configuration information of the first BWP to each second communications device in the second communications device group; and sending, by the first communications device, control signaling to all the second communications devices in the second communications device group, where the control signaling is used to indicate all the second communications devices in the second communications device group to activate the first BWP.

Resource configuration method, first communications device, second communications device, and system

A resource configuration method for sidelink information, a communication device, a network device, and a system the method including receiving first indication information from a network device, where the first indication information indicates a first, second, and third resource in one slot, where the first resource is used for transmitting uplink information, the second resource is used for transmitting downlink information, and the third resource is used for transmitting first information or not transmitting information, the first information comprising uplink information, downlink information, or sidelink information, receiving second indication information from the network device, the second indication information indicating a fourth resource belonging to the first resource, and being used for transmitting sidelink information to a second communication device, and sending a sidelink information to the second communication device on the fourth resource, the sidelink information including sidelink feedback information.

Resource configuration method for sidelink information, communication device, and network device

Embodiments of the present invention provide a reference signal notification method, including: sending, by a network device, a reference signal notification message, where the reference signal notification message includes time resource information of a reference signal. According to the embodiments of the present invention, the reference signal notification message in the present invention is used to notify UE of a reference signal configuration, especially information about a CSI-RS, so that the network device can flexibly provide a reference signal, especially a CSI-RS, and the UE can more effectively receive the reference signal, especially the CSI-RS.

Reference signal notification method and apparatus

A data transmission method and an apparatus, the method including determining, by a first terminal apparatus, a priority of uplink data carried on a physical uplink shared channel (PUSCH), a priority of first sidelink data carried on a physical sidelink shared channel (PSSCH), and a priority of sidelink feedback control information (SFCI) carried on a physical sidelink feedback channel (PSFCH), where the PUSCH, the PSSCH, and the PSFCH occupy a same slot; and sending, by the first terminal apparatus, at least one of the uplink data through the PUSCH, or the first sidelink data through the PSSCH, or the SFCI through the PSFCH based on the priority of the uplink data, the priority of the first sidelink data, and the priority of the SFCI.

Data transmission method and apparatus

A data feedback method is described. The method includes a second terminal sending first feedback information to a first terminal based on a sidelink. The first terminal determines, based on a receiving result of the first terminal for first data and a receiving result that is of the second terminal and that is indicated by the first feedback information, second feedback information that is sent to a network device. In this way, an energy saving requirement of the second terminal is met. Moreover, the described method ensures the network device can also determine receiving results of the first terminal and the second terminal based on the second feedback information, thereby reducing unnecessary operations performed by the network device.

Data feedback method and apparatus

A sidelink control information sending and receiving method, a terminal apparatus, and a system are provided in this application, and may be applied to fields such as vehicle-to-everything (for example, V2X, LTE-V, or V2V), intelligent driving, and an intelligent connected vehicle. In a scenario in which second-stage SCI is not required in a sidelink communication system, a transmit end apparatus in sidelink communication indicates, by using first-stage SCI, a cyclic redundancy check bit corresponding to the first-stage SCI, or a reference signal used to demodulate the first-stage SCI, that the transmit end apparatus is not to send the second-stage SCI to a receive end apparatus. In this way, the transmit end apparatus may flexibly choose, based on a specific scenario of the sidelink communication, to use 2-stage SCI or 1-stage SCI, to avoid resource waste caused by using the 2-stage SCI in any scenario of the sidelink communication, thereby improving resource utilization efficiency.

Sidelink control information sending and receiving method, terminal apparatus, and system

An information sending method, an information receiving method, a device, and an apparatus are disclosed. The information sending method includes: determining, by a first terminal device based on first information, at least one of a quantity or a position of m DMRSs carried on a PSSCH, where m is a positive integer, and the first information includes at least one of a subcarrier spacing, duration of the PSSCH, or a channel coherence time; and sending, by the first terminal device, the m DMRSs to a second terminal device. In addition, when the DMRS on the PSSCH is determined, a reference channel coherence time may be selected. For example, a time interval between two configured adjacent DMRSs may be less than or equal to the channel coherence time.

Information sending and receiving method, device, and apparatus

This application provides a power control method and a power control apparatus. The method includes: sending, by a first terminal device, a first signal to a second terminal device at a first transmit power; receiving, by the first terminal device, first information from the second terminal device, where the first information is used to indicate or includes a first received power, and the first received power is a received power of the first signal; determining, by the first terminal device, an estimated value of a path loss between the first terminal device and the second terminal device based on the first transmit power and the first received power. According to this application, power control can be properly performed. This application may be applied to an internet of vehicles, for example, V2X, LTE-V, and V2V, or may be applied to fields such as D2D, intelligent driving, and intelligent connected vehicles.

Power control method and power control apparatus

This application provides example reference signal transmission methods, apparatuses, and systems. An example method includes determining a first transmission parameter in at least two transmission parameters, where any two of the at least two transmission parameters are different, and the first transmission parameter is used to determine a first transmission resource for a first reference signal. The first reference signal is sent to a second communication apparatus on the first transmission resource.

Reference signal transmission method, apparatus, and system

A first terminal apparatus sends K2 first reference signals to a second terminal apparatus in K1 directions. The first terminal apparatus determines that beams in the K1 directions all fail for N1 consecutive times. The first terminal apparatus sends P2 second reference signals to the second terminal apparatus in P1 directions. The first terminal apparatus determines, based on measurement results that are of the P2 second reference signals and that are from the second terminal apparatus, whether P1 beams corresponding to the P1 directions are available.

Communication method and apparatus

This application provides a method for determining a transport block size and a communication apparatus, which may be used in systems such as vehicle-to-everything, V2X, and V2V. A receive-end terminal device and a transmit-end terminal device may determine a quantity of encoded symbols based on a symbol length used for sidelink communication in a time unit and an scaling factor, and may further determine a transport block size of a data channel based on the quantity of encoded symbols. Therefore, for all slots used for sidelink communication, a same quantity of encoded symbols can be determined, and a same transport block size can be further determined.

Method for determining transport block size and communication apparatus

A first terminal device determines a transmit power of a data channel, wherein the transmit power of the data channel comprise a first data channel part and a transmit power of a second data channel part, where the first data channel part is a part of the data channel that has a same time domain resource with a control channel, and the second data channel part is another part of the data channel that has a different time domain resource with the control channel. The first terminal device sends data in the first data channel part at the transmit power of the first data channel part, and sends data in the second data channel part at the transmit power of the second data channel part. This application may be applied to internet of vehicles, for example, V2X, LTE-V, and V2V.

Power control method and apparatus

The present disclosure relates to feedback channel sending methods. In one example method, a first terminal device obtains configuration information of a resource pool, where the configuration information is used to indicate that frequency domain resources of the resource pool include L sub-channels and each sub-channel includes q resource blocks (RBs), M of the L sub-channels are used by the first terminal device to send at least one of a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH), N of the L sub-channels are used by the first terminal device to receive a physical sidelink feedback channel (PSFCH) from a second terminal device, and there is a correspondence between one of the M sub-channels and one of N·q RBs included in the N sub-channels, and sends at least one of a first PSCCH or a first PSSCH on a first channel in a slot n.

Growing community of inventors

Shanghai, China

Zhengzheng Xiang