Huawei Technologies Co., Limited

Shitong Yuan

Fengwei Liu

Mingzeng Dai

Jing Qiu

Lei Chen

You Li

Yuanping Zhu

Qiqi Mao

Yalin Liu

Jing Liu

Qinghai Zeng

Tingting Geng

Le Yan

Hongping Zhang

Feng Han

Xi Zhang

Huang Huang

Di Zhang

Wenjie Peng

Rui Wang

Peng Guan

Xiaoli Shi

Su Huang

Xiaoyong Tang

Bo Fan

A communication method and a communication apparatus are disclosed. The communication method includes: An integrated access and backhaul (IAB) node receives first configuration information from a source donor base station, where the first configuration information includes N pieces of configuration information of a mobile terminal (MT) and N pieces of configuration information of a distributed unit (DU) that are configured by N target donor base stations for the IAB node; and the DU of the IAB node uses one piece of configuration information in the N pieces of configuration information of the DU when the MT of the IAB node satisfies a specific condition, where N is greater than or equal to 1, the MT is configured to communicate with a parent node of the IAB node, the source donor base station, or the target donor base station, and the DU is configured to communicate with a child node of the IAB node or a terminal.

Communication method and communication apparatus

This application provides a timing synchronization method and an apparatus, to improve precision of a downlink transmit timing of a relay node. The method includes: The first node receives first indication information from a donor node, where the first indication information is used to indicate information about a plurality of second nodes, and the second node is a parent node of the first node. The first node receives a plurality of pieces of timing information from the plurality of second nodes. The first node determines a first downlink transmit timing of the first node based on the plurality of pieces of timing information.

Timing synchronization method and apparatus

A resource indication method and apparatus are provided, to implement resource indication in a case in which a distributed unit (DU) has a plurality of cells. The method includes: a first node receives indication information from a second node, where the indication information is used to indicate availability of a dynamic resource in first resources corresponding to P cells, the first resource is a transmission resource used by the first node to communicate with a third node, the second node is an upper-level node of the first node, and the third node is a lower-level node of the first node. The first node determines the availability of the dynamic resource in the first resources of the P cells based on the indication information, where 1≤P≤N.

Resource indication method and apparatus

This application provides a transmission resource configuration method and an apparatus. The method includes: receiving, by a first node, a transmission resource configuration from a second node, where the transmission resource configuration includes a first configuration and a second configuration, the first configuration indicates that a start time resource is uplink and/or an end time resource is downlink in a configuration period, and the second configuration indicates that a start time resource is downlink and/or an end time resource is uplink in a configuration period; and switching, by the first node based on first signaling, a transmission direction of a first time resource in the first configuration by using the first configuration; or using, by the first node, the first configuration or the second configuration based on second signaling.

Transmission resource configuration method and apparatus

Embodiments of this application disclose a power control method and a power control apparatus, to alleviate a transmission capacity decrease caused by interference, and improve transmission performance. The method in embodiments of this application includes: A first node determines a first power control parameter. The first power control parameter is used to indicate first transmit power expected by the first node in a first transmission mode. The first node sends a first message to a second node. The first message carries the first power control parameter, and the first message is used to request the first transmit power expected by the first node in the first transmission mode. The second node is an upper-level node of the first node or a donor base station.

Power control method and power control apparatus

This application provides a power control method including: receiving, by a second node, radio resource control (RRC) from a first node, where the RRC includes a power control parameter set configured for the second node, the power control parameter set includes a power control index, and the power control index is determined based on a transmission mode or a transmission capability of the second node; receiving downlink control information (DCI) including power control index indication information used to: when the first node schedules the second node, indicate a value of a power control index that is for uplink transmission and that is for the second node; determining a transmit power based on the power control index indication information and the power control parameter set; and sending a signal at the determined transmit power.

Power control method and apparatus

A resource multiplexing method and apparatus are provided, to determine a set of available symbols in an NR IAB system. A first node determines a time domain position of a DU resource of a communications device, and determines a time domain position of an MT resource of the communications device based on the time domain position and a type of the DU resource and guard interval information. Alternatively, a first node determines a time domain position of an MT resource of a communications device, and determines a time domain position of a DU resource of the communications device based on the time domain position and a type of the MT resource and guard interval information.

Resource multiplexing method and apparatus

This application provides a resource configuration method and apparatus. A multiplexing type between a second functional unit and each of one or more antenna panels of a first functional unit is indicated to an IAB node, so that the IAB node obtains a resource configuration of an MT or a resource configuration of a DU based on the multiplexing type. This helps implement a resource configuration in the IAB node in a case of a plurality of antenna panels.

Resource configuration method and apparatus

This application provides example resource configuration methods, example apparatuses, and example computer-readable storage medium. One example method includes obtaining, by a distributed unit (DU) side of a first node, a first resource configuration and at least one second resource configuration, where the first resource configuration indicates the DU side of the first node to communicate with at least one of a terminal device or a second node by using the first resource configuration, the second resource configuration indicates the DU side of the first node to communicate with the second node by using the second resource configuration, the first node is a relay node, and the second node is a child node of the first node. The DU side of the first node can then communicate with the at least one of the terminal device or the second node.

This present disclosure discloses example random access resource configuration methods, mediums, and apparatuses. One example method includes receiving, by a first network device, configuration information of a first physical random access channel (PRACH) resource. Location adjustment information is received by the first network device, where the location adjustment information is used to indicate to adjust a location of at least a part of the first PRACH resource. A second PRACH resource is determined by the first network device based on the configuration information of the first PRACH resource and the location adjustment information. A random access request is sent by the first network device to a second network device on the second PRACH resource.

Random access resource configuration method and apparatus

This application provides a communication method and a communication device. The method includes: A terminal device obtains an uplink timing advance TA of a serving cell. The terminal device obtains a downlink signal time difference between the serving cell and a neighboring cell. The terminal device obtains an uplink TA of the neighboring cell based on the uplink TA of the serving cell and the downlink signal time difference. The terminal device sends an uplink signal to the neighboring cell based on a downlink subframe timing and the uplink TA of the neighboring cell. The uplink TA of the neighboring cell is obtained, so that the terminal device can send the uplink signal to the neighboring cell based on the uplink TA of the neighboring cell.

Communication method and communication device

This application provides a communication method and a communications apparatus. The method includes: receiving, by a terminal device, conditional handover configuration information from a first network device, where the first network device is a network device to which a serving cell belongs, and the serving cell is a cell that currently accessed by the terminal belongs; and determining, by the terminal device, a first target cell based on the conditional handover configuration information.

Communication method and communications apparatus

In a transmission parameter configuration method, a first node receives a transmission configuration message, where the transmission configuration message includes transmission configuration index information and a transmission parameter corresponding to the transmission configuration index information, and the transmission configuration index information is used to identify different transmission modes. The first node obtains a transmission indication message, where the transmission indication message includes the transmission configuration index information, and the transmission indication message is used to indicate to the first node to apply the transmission parameter corresponding to the transmission configuration index information. The first node performs, based on the transmission configuration index information, data transmission by using the transmission parameter corresponding to the transmission configuration index information. The method can meet requirements of more application scenarios, support more transmission modes, and reduce overheads caused by transmission parameters.

Transmission parameter configuration method and apparatus

This application provides a method for reporting a measurement result of interference measurement, to implement interference management performed by a parent node on a child node in an IAB system. The method includes: performing, by a second node, interference measurement to obtain one or more measurement results, the interference measurement includes interference measurement in a first mode and/or interference measurement in a second mode, and sending, by the second node, an uplink signal to the first node, the uplink signal includes the one or more measurement results, the uplink signal includes an indication field, and the indication field is used to indicate a mode of interference measurement corresponding to each of the one or more measurement results.

Method for reporting measurement result of interference measurement and apparatus

A method for sending a synchronization signal in a relay system, and the method includes receiving, by a relay node, synchronization signal information sent by a parent node through an air interface, where the synchronization signal information comprises at least one of a subcarrier spacing of a synchronization signal, information about an operating frequency band of the relay node, information about a physical broadcast channel of the relay node, a synchronization signal periodicity, or indication information of a synchronization signal obtaining manner, and sending, by the relay node, the synchronization signal based on the synchronization signal information.

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Chengdu, China

Shitong Yuan