Fujitsu Corporation

Huawei Technologies Co., Limited

Beijing Dajia Internet Information Technology Co., Ltd.

Beijing University of Posts and Telecommunications

Yulong Shi

Meiyi Jia

Hua Zhou

Haibo Xu

Lianhai Wu

Yuanping Zhu

Jing Liu

Xin Wang

Mingzeng Dai

Yibin Zhuo

Wei Xi

Zhenzhen Cao

Yu Gu

Jun Cheng

Qimei Cui

Lei Zhang

Hui Wang

Ming Wang

Jun Wang

Xiaofeng Tao

Pengyu Ji

Yin Yan

Qiuge Yang

Tianpeng Yuan

Wenjie Peng

Guorong Li

Haiyan Luo

Xiangyu Li

This application provides a communication method. In the method, a first node receives a first radio resource control (RRC) reconfiguration message from a first donor node through a second node. After the first node receives the first RRC reconfiguration message from the second node, the first node receives first indication information from the second node. When the first node determines, based on the first indication information, that the first RRC reconfiguration message becomes effective, the first node establishes an RRC connection to a second donor node based on the first RRC reconfiguration message. In the method, the first node and the second node are nodes in a group that performs group handover, the group handover is a cross-donor node group handover, the second node is a head node or the second node is connected to a head node, and the second node is a parent node of the first node.

Communication method applied to integrated access and backhaul IAB system and communication apparatus

Embodiments of this application provide a node handover method, in which a source donor node sends a handover request message to a target donor node, where the handover request message includes context information of an integrated access and backhaul (IAB) node and context information of at least one terminal device. The source donor node receives a handover response message sent by the target donor node, where the handover response message includes an identifier of an accepted terminal device in the at least one terminal device and/or an identifier of a rejected terminal device in the at least one terminal device.

Node handover method and related device

A method includes: a first IAB node sets up a first RRC connection to a target IAB donor by performing RLF recovery. The first IAB node sends a first message to a second node by using an SRB 1 or an SRB 2 or the first IAB node sends a BH RLF indication to the second node. The first IAB node sets up an RRC connection to a target IAB donor by performing RLF recovery and the second node is connected to a source IAB donor through the first IAB node. The second node may be triggered to set up an second RRC connection to the target IAB donor based on the first message or the BH RLF indication.

RLF recovery method and apparatus for IAB network, and related device

A communication method and an apparatus. The method includes: receiving at least one piece of quality of service QoS information from a second terminal; determining first QoS information based on the at least one piece of QoS information; and determining a first bearer configuration based on the first QoS information, and forwarding data from the second terminal to a third terminal based on the first bearer configuration; or sending the first QoS information to a network device, receiving a first bearer configuration of the network device, and forwarding data from the second terminal to a third terminal based on the first bearer configuration.

Communication method and apparatus for improving transmission of QOS information in communication between terminals

The disclosure provides routing methods and apparatuses. One example method includes that a first node receives a data packet. The first node determines a Backhaul Adaptation Protocol (BAP) header in the data packet, where the BAP header includes a BAP address of a destination node of the data packet and first information. The first information is used to determine whether the BAP header includes a routing path identifier of the data packet. The first node sends the data packet including the BAP header to the destination node based on the BAP header.

Routing method and apparatus

A communication method includes receiving a first packet from a second node, where the first packet includes an identifier of the second node, a first identifier, and an identifier of a receiving node; determining, based on the first packet, whether the first node is the receiving node; and determining a first routing table based on the first packet in response to a determination being made that the first node is not the receiving node, where the first routing table is used for data routing to the receiving node.

Communication method, apparatus, device, and system

Embodiments of this application disclose various methods and systems. One example method comprises receiving first configuration information from a donor centralized unit (CU). The first configuration information indicates that when one or more respective values of one or more first fields in a data packet correspondingly meets respective first value ranges of the first fields, the data packet is transmitted through a first channel between the donor distributed unit (DU) and a child node. The first configuration information is stored. In a second example, first configuration information is obtained indicating that when one or more respective values of one or more first fields in a data packet meet one or more respective first value ranges of the one or more first fields, the data packet is transmitted through a first channel between a donor DU and a child node, and the first configuration information is sent to the donor DU.

Configuration method, communication apparatus, and communication system

A communication method and apparatus are provided. The method includes: An IAB donor gNodeB determines first indication information, and then sends a first message to an eNB, where the first message includes a first control plane message and the first indication message; and the eNB may determine a first radio bearer based on the first indication information in the received first message, and then sends a second message including the first control plane message to an IAB node by using the first radio bearer. The first radio bearer corresponds to a type of a downlink F1AP message, so that the eNB selects different radio bearers for different types of downlink F1AP messages, thereby providing an effective QoS guarantee for a service of a terminal.

Communication method of transmitting a control plane message for an interface between a radio backhaul device and a radio access device through another radio access device

A data packet transmission method and apparatus are provided. The method includes: An IAB donor determines first configuration information, where the first configuration information is used to indicate a first backhaul link BH RLC channel, and the first BH RLC channel is used to transmit a control protocol data unit PDU at a backhaul adaptation protocol BAP layer. The IAB donor sends the first configuration information to an IAB node. According to the foregoing procedure, the IAB donor indicates, by using the first configuration information, the IAB node to send the control PDU at the BAP layer through the first BH RLC channel, to implement bearer mapping when the IAB node needs to send the control PDU at the BAP layer.

Data packet transmission method and apparatus

This application provides a method of determining an association between logical channel groups, including: The first backhaul node receives a first buffer status report from a first device, where the first buffer status report is used to determine uplink buffer statuses of one or more first logical channel groups of a MAC entity corresponding to the first backhaul node and the first device. The first backhaul node determines, based on the first logical channel group(s) and a first mapping relationship, one or more second logical channel groups associated with the first logical channel group(s), where a second device is a parent node of the first backhaul node, and the first mapping relationship includes a mapping relationship between the first logical channel group(s) and the second logical channel group(s) of a MAC entity corresponding to the first backhaul node and the second device.

Method for determining association between logical channel groups, apparatus, and system

An area identifying apparatus and method and a communication system. The area identifying method includes: receiving, by a UE, area identification information used for identifying an area transmitted by a base station; comparing the received area identification information with area identification information currently stored in the UE; and determining whether an area where the UE is located is changed according to a result of comparison. Hence, whether the area where the UE is located is changed or which area the UE is located may be efficiently identified.

Area identifying apparatus and method and communication system

A cell configuration apparatus and method. By receiving configuration information on candidate cells from the network device at the source side, when a candidate cell satisfies a condition for performing conditional handover, a target primary cell and target secondary cells are configured according to the configuration information; or, when or after handover is completed, information on cells having best quality or indication of the information on cells having best quality is transmitted to a network device at the target side, configuration information on target secondary cells is received from the second network device, and the target secondary cells are configured according to the configuration information.

Cell configuration apparatus and method

A data transmission apparatus, applicable to a UE, the apparatus includes a receiver configured to receive configuration information about data radio bearers (DRBs), the configuration information indicating TTI length to which each DRBs for the UE corresponds, the DRBs being configured by radio resource control (RRC), and receive one or more uplink grant, each of the uplink grants of the one or more uplink grants corresponding to a TTI length different from another TTI length of another uplink grant, a transmitted configured to transmit data using an uplink shared channel corresponding to each TTI length according to an uplink grant in the one or more uplink grants.

Method and apparatus for configuring transmission time interval, data transmission method and apparatus and system

A system information indication method and apparatus and a communication system. In the embodiments of this disclosure, by indicating a correspondence between an area related ID or a system information related index and system information, and/or notifying information on a change of the area related ID or system information related index, a case may be avoided where a UE needs still to obtain system information from a network side when system information of a current cell is stored, thereby efficiently lowering power consumption of the UE in acquiring the system information.

System information indication method and apparatus and communication system

A terminal apparatus includes a receiver configured to receive a command for activating or deactivating one or more duplication transmission by using a bitmap field, each the one or more duplication transmission corresponding to each of one or more packet data convergence protocol (PDCP) entities or each of one or more radio bearers, and a processor circuitry configured to control to activate or deactivate the one or more duplication transmission according to the command, and wherein one bit or a plurality of bits in the bitmap field correspond(s) to one of the PDCP entities or the radio bearers, an i-th bit or an i-th pair of bits in the bitmap field correspond(s) to an i-th packet data convergence protocol entity in the PDCP entities.

Growing community of inventors

Beijing, China

Yulong Shi