Huawei Technologies Co., Limited

Xiang Mi

Zhe Jin

Xiaolei Tie

Zhihu Luo

Yuwan Su

Zheng Yu

Xingqing Cheng

Jun Li

Wenping Bi

Hong Wang

Fan Yang

Lixia Xue

Chao Li

Lei Chen

Xinqian Xie

Yue Zhao

Yun Liu

Hongjia Su

Baokun Shan

Yubo Yang

Haining Huang

Lei Dong

Tianhong Zhang

A data transmission method and apparatus are applicable to fields such as V2X, intelligent driving, and connected vehicles. A probability of a collision between a high-priority PSSCH and a low-priority PSSCH is reduced, thereby improving QoS of the high-priority PSSCH. The method includes: obtaining resource pool configuration information including first resource pool information and second resource pool information, where the first resource pool information indicates a first resource pool, and the second resource pool information indicates a second resource pool; obtaining a first priority value corresponding to a physical sidelink shared channel PSSCH; when the first priority value is less than a first priority threshold, determining, in a partial-sensing-selection-based resource determination mechanism and/or a random-selection-based resource determination mechanism in the first resource pool, a resource for sending the PSSCH.

Data transmission method and apparatus, and system

This application has disclosed a method for sending and transmission of a resource conflict indication and a communication apparatus. When determining that a reserved resource indicated by first SCI conflicts with a reserved resource indicated by second SCI, a first terminal device sends an RCI to a second terminal device at a determined time domain and/or frequency domain position before a conflict position; or when determining that a resource corresponding to first SCI conflicts with a resource corresponding to second SCI, a first terminal device sends an RCI to a second terminal device at a determined time domain and/or frequency domain position after a conflict position. The RCI is sent at the determined time domain and/or frequency domain position.

Resource conflict indication transmission method, apparatus, and system

A resource determining method includes that a first terminal obtains transmission information from a second terminal, wherein the transmission information is used to indicate a first sidelink resource. The first terminal determines a second sidelink resource according to the transmission information, wherein a time range of the second sidelink resource does not overlap that of the first sidelink resource. The first terminal sends a first data to the second terminal on a sidelink resource of the second sidelink resource, wherein the first sidelink resource includes a sidelink resource on which a second data is received by the second terminal.

Resource determining method, apparatus, and system

A communication method and apparatus are provided, where the method includes: determining, by a first device according to a first preset rule, a first resource in at least two preset resources corresponding to a same gap before a first paging occasion PO; and monitoring, by the first device, at least one wake-up signal sequence on the first resource. According to the foregoing method, the first resource used by the first device for monitoring the wake-up signal sequence is determined according to the first preset rule.

Communication method and apparatus

A collision handling method and apparatus are provided. The method includes: a terminal device determines that PUR SS collides with Paging CSS; and the terminal device determines, based on a status of uplink data transmission in PUR associated with the PUR SS and/or a discontinuous reception DRX configuration status of the terminal device, to preferentially monitor the PUR SS or to preferentially monitor the Paging CSS. In the foregoing method, the terminal device determines, based on an actual situation, whether to preferentially monitor the PUR SS or preferentially monitor the paging CSS, so that when the terminal device is to preferentially monitor the PUR SS, the terminal device can receive a feedback of a network device for PUR transmission in time, and when the terminal device i to preferentially monitor the Paging CSS, it can be ensured that the terminal device can receive a paging message in time.

Collision handling method and apparatus

This application relates to a communication method and apparatus. A terminal device sends first uplink data to a network device. After sending the first uplink data, the terminal device monitors a first downlink control channel in a first search space in a first duration; and after the first duration ends, the terminal device monitors a second downlink control channel in a second search space in a second duration. A length of a periodicity of the second search space is greater than a length of a periodicity of the first search space. In this case, the terminal device monitors the second downlink control channel based on the second search space at a low frequency. Therefore, the second search space with a long periodicity is set, so that power consumption of monitoring the downlink control channel by the terminal device can be reduced.

Example reference signal sending methods and apparatus are described. In one example method, a terminal device detects whether a paging scheduling message exists in a PDCCH search space whose starting subframe is a subframe corresponding to a paging occasion (PO), and/or detects whether a wake-up signal (WUS) exists before a PO. A network device determines a time domain resource in first duration based on a quantity of paging occasions in a discontinuous reception period, where the time domain resource is a time domain resource in a time-frequency resource used to transmit a reference signal. The network device sends the reference signal to a terminal device on the time domain resource.

Reference signal sending method, reference signal receiving method, device, and system

Embodiments of this application provide a communication method and device. The method includes: A first device determines first control information, where the first control information includes first indication information and second indication information, where the first indication information is used to indicate a state of preconfigured-resource transmission, and the state includes successful transmission, unsuccessful transmission, scheduling retransmission, or preconfigured-resource retransmission; and the second indication information is used to indicate whether the first device transmits first information, and the first information includes higher layer data and/or preconfigured uplink resource reconfiguration information. The first device sends the first control information to a second device. According to the method and device provided in the embodiments of this application, a network coverage capability can be improved, and the method and device may be applied to the internet of things, for example, MTC, IoT, LTE-M, or M2M.

Communication method and device

Embodiments of this application provide a method for receiving and sending a reference signal, an apparatus, and a system, so that a network device can correctly demodulate uplink data of different terminal devices of a same cell. This solution is applicable to a wireless communications system including a first cell. The first cell includes a plurality of terminal devices that can transmit uplink data on a same time-frequency resource. A first terminal device in the plurality of terminal devices determines an index of a first sequence based on a first parameter value, and generates a first reference signal based on the first sequence indicated by the index of the first sequence. Then, the first terminal device sends the first reference signal to the network device. The first parameter value is different from a parameter value corresponding to another terminal device in the plurality of terminal devices.

Method for receiving and sending reference signal, apparatus, and system

An information sending method and an apparatus are provided. In the method, after sending a first message including uplink data to a network device, a terminal device receives first DCI from the network device, where the first DCI may include first indication information, and the first indication information is used to indicate that the network device has successfully demodulated the first message or used to indicate the terminal device to flush a HARQ buffer corresponding to the first message; and the terminal device may obtain the first indication information from the first DCI, and after obtaining the first indication information, the terminal device determines not to monitor a PDCCH search space within first duration after the first DCI. After sending the uplink data and receiving the first indication information from the network device, the terminal device may not monitor the PDCCH search space within specific duration.

Information sending method and apparatus

This application provides example communication methods and apparatuses. One example method includes performing, by a network device on a preconfigured resource, data demodulation on uplink data from a terminal device. The network device can then send downlink control information (DCI) to the terminal device, where the DCI includes first indication information, and if the uplink data fails to be demodulated, or it is determined, based on a result of the data demodulation, that the terminal device needs to retransmit the uplink data, the first indication information indicates either the terminal device to initiate random access or EDT and retransmit the uplink data or that the uplink data fails to be demodulated.

Communication method and communications apparatus

Methods and apparatuses for sending and receiving a wake-up signal sequence are disclosed. The method includes: determining N parameters/parameter for one paging occasion (PO), where the N parameters/parameter correspond(s) to N wake-up signal (WUS) resources/resource in WUS resources associated with the PO, N is an integer greater than or equal to 1, and when N>1, the N parameters are different from each other; generating N WUS sequence sets/set based on the N parameters/parameter, where the N WUS sequence sets/set are separately transmitted on associated resources in the N WUS resources, and each of the N WUS sequence sets includes at least one WUS sequence; and sending at least one sequence in a first WUS sequence set on a first WUS resource, where the first WUS resource is one of the N WUS resources, and the first WUS sequence set is a WUS sequence set transmitted on the first WUS resource.

Methods and apparatuses for sending and receiving wake-up signal sequence

A monitoring method and an apparatus are provided. The method includes transmitting, by a terminal device, first information based on a first repetition number, where the first repetition number is less than or equal to a second repetition number, and the second repetition number is a maximum repeat transmission number of the first information. The method also includes determining, by the terminal device, a scheduling end moment of the first information based on the second repetition number, where the scheduling end moment of the first information is a transmission end moment of the first information when the first information is transmitted based on the second repetition number. The method further includes starting or restarting, by the terminal device, a timer at the scheduling end moment of the first information, and monitoring a PDCCH search space before the timer expires or stops.

Method and apparatus for control information monitoring

A communication method and device, the method including obtaining, by a terminal device, a timing advance (TA), determining, by the terminal device according to a preset rule and first information, whether the TA is valid, where the first information includes a first parameter, and wherein the first parameter is information related to a location of the terminal device, and performing at least one of determining, by the terminal device, in response to the TA being invalid, that uplink data transmission cannot be performed, or determining, by the terminal device, in response to the TA being valid, that the TA can be used for uplink data transmission.

System and method for determining timing advance validity for a communication method and device

Example communication methods and apparatus are described. In one example method, a first cell includes a plurality of terminal devices that can transmit uplink data on a same uplink time-frequency resource. A first terminal device in the plurality of terminal devices determines a reference time domain location based on a preconfigured uplink time-frequency resource, where the reference time domain location is the same as a reference time domain location determined by another terminal device in the plurality of terminal devices. The first terminal device determines a time domain location that is (first duration×N H+second duration×(N−1)) away from the reference time domain location as a start time domain location of X gaps. The first terminal device further determines a time domain location that is (first duration×(M−1)+second duration x (M−1)) away from the reference time domain location as a start time domain location of Y first durations, where Y=X or Y=X+1. Uplink data is sent by the first terminal device to a network device on a first time-frequency resource used to transmit uplink data.

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Beijing, China

Xiang Mi