Huawei Technologies Co., Limited

Advanced New Technologies Co., Ltd.

Foshan Feiling Trading Co., Ltd.

Alibaba Group Holding Limited

Huazhong University of Science and Technology

Shanghai Jiao Tong University

Lollipop Technology (Hangzhou) Co., Ltd.

Lei Lu

Jinfang Zhang

Zhengzheng Xiang

Hongjia Su

Wenting Guo

Lei Dong

Wenliang Liang

Dai Shi

Jun Luo

Pu Yuan

Bojie Li

Chao Li

Yanghui Liu

Fen Zhai

Qing Min

Xin Wang

Gang Huang

Hao Yan

Liang Gu

Li-Te Kuo

Wei Zhang

Yan Chen

Jin Liu

Chenghui Peng

Lu Rong

Tianxu Zhang

Shunqing Zhang

Jianjun Wu

Hong Xia Li

Lei Xie

Jian Luo

Xingwei Zhang

Hong Li

Chunxu Jiao

Keji Cui

Chunlei Gu

Kai Shi

Jichao Huang

Di Li

Hong Duan

Jiapeng Dan

Tianze Li

Yongli Wang

Jiale Huang

Tengfei Jian

Dongsheng Xiong

Hongyi Zhao

Qingfeng Luo

Yuan Wang

Richard Stirling-Gallacher

Zhongfeng Li

Yong Huang

Shoukui Yao

Feng Xie

Haihua Shen

Fuqiang Zhang

Gaoxian Chen

Zeyu Xiao

Nan Jiang

Lin Cai

Xiaoyong Xu

Yuliang Chen

Yunchao Guan

Erkai Chen

Dehua Zhao

Kefeng Han

Yuanquan Wang

Jianping Pan

Miao Lin

Hongning Wu

Huilian Yang

Xu Cheng

Fenglin Wang

In accordance with an embodiment, a method includes: obtaining, at least one first time window in a time-frequency resource set, wherein the time-frequency resource set is used by a terminal to send sidelink communication information; obtaining first control information from a second terminal, wherein the first control information comprises activation indication information; activating one of the at least one first time window based on the first control information to establish an active first time window; stopping a determining by sensing the time-frequency resource set, a time-frequency resource for sending the sidelink communication information in the active first time window; receiving first indication information from the second terminal in the active first time window, wherein the first indication information indicates at least one time-frequency resource; and sending first sidelink communication information on the at least one time-frequency resource.

Communication method and apparatus

The disclosure provides message transmission methods and apparatuses, which can be used in various communication systems, for example, a V2X communication system, an LTE-V communication system, a V2V communication system, an IoV communication system, an MTC system, an IoT communication system, an LTE-M communication system, and a M2M communication system. One example method includes that a second terminal device receives a first message, where the first message is a broadcast message from a first terminal device, and the first message includes first data. The second terminal device receives a reception failure message for the first message, where the reception failure message for the first message is a broadcast message from a third terminal device, and the second terminal device broadcasts a second message, where the second message includes the first data.

Message transmission method and apparatus

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.

A method for configuring a sidelink transmission resource is provided, including sending, by a network device, downlink control information (DCI) to a first terminal apparatus, the DCI comprising one or both of a first indication information or a second indication information. The first indication information indicating a time domain resource on which the first terminal apparatus sends sidelink hybrid automatic repeat request (HARQ) information to the network device, and the second indication information indicating a frequency domain resource on which the first terminal apparatus sends the HARQ information to the network device. The method further includes receiving, by the network device, the HARQ information from the first terminal apparatus based on the one or both of the first indication information or the second indication information.

Method and communications apparatus for configuring sidelink transmission resource

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

A control information transmission method, an apparatus, and a system are provided. The method includes: a first terminal apparatus sends to a second terminal apparatus in an islot, first control information including resource indication information and decoding information, wherein i is an integer greater than or equal to 0; sends to the second terminal apparatus in an (i+j)slot, second control information including the resource indication information, wherein j is an integer greater than or equal to 1 and less than or equal to N, N is an integer greater than or equal to 1; and sends first data to the second terminal apparatus in the islot and an (i+1)slot to an (i+N)slot based on the first control information and M pieces of second control information, wherein M is an integer greater than or equal to 1 and less than or equal to N.

Control information transmission method, apparatus, and system

A method for determining a transport block size includes: determining an overhead of a sidelink data channel PSSCH demodulation reference signal (DMRS) in a physical resource block (PRB) of a first time-frequency resource, where the first time-frequency resource includes a first time unit in time domain; and determining, based on the overhead of the PSSCH DMRS, a number of resource elements (REs) on the first time-frequency resource that are for data transmission, where the number of REs for data transmission is for determining a transport block size (TBS) of the sidelink data channel PSSCH. The method provides a combined gain of a plurality of transmissions of a same transport block, and supports DMRS configurations of different quantities of DMRS symbols in initial transmission and retransmission of one transport block.

Method and apparatus for determining transport block size

Temperature measuring ring

A device is configured to communicate over the first link and over at least one second link. The device is further configured to determine, based on at least one communication over the at least one second link, retransmission information (RI), and/or resource request information (RRI), and/or buffer status information (BSI) regarding the at least one second link. The device is then configured to transmit a first message over the first link, wherein the first message includes the RI, and/or the RRI, and/or the BSI.

Devices and methods for indicating a second-link retransmission over a first link

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 communication method and a communication apparatus, the method including determining, based on a quantity of resource elements (REs) that are in a first time-frequency resource and that are used to transmit first information, a quantity of REs that are in the first time-frequency resource and that are used to transmit data, the first time-frequency resource including a first time unit in time domain and including a data channel resource in frequency domain, where the first information includes at least one of a control channel, a control channel demodulation pilot, a data channel demodulation pilot, second-stage control information, a phase tracking reference signal (PTRS), or a channel state information reference signal (CSI-RS).

Communication method and communication apparatus

A radio-frequency chip is provided, and relates to the field of chip technologies, to reduce a component loss caused by redundant components in the radio-frequency chip. The radio-frequency chip includes a phased array, the phased array includes a plurality of branches, and each of the plurality of branches includes a transmitting path, a receiving path, a common path, and a phase shifter. The phase shifter includes a first phase shift unit, a second phase shift unit, and a third phase shift unit. The first phase shift unit is located on the transmitting path, the second phase shift unit is located on the receiving path, and the third phase shift unit is located on the common path.

Radio-frequency chip

A communication method and apparatus are provided, and are applicable to fields such as V2X, internet of vehicles, intelligent connected vehicles, assisted driving, and intelligent driving. The method includes: A first terminal device may map first control information to a first transmission resource, and map second information including second control information and data to a second transmission resource and a third transmission resource, and may map the second information to the second transmission resource that does not overlap the first transmission resource in time domain.

Resource mapping for transmitting sidelink control information

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

Growing community of inventors

Shanghai, China

Lei Lu