China Academy of Telecommunications Technology

Datang Mobile Communications Equipment Co., Ltd.

Other

Jiamin Liu

Fangli Xu

Yali Zhao

Li Long Chen

Yuan He

Fei Qin

Ying Wang

Jing Liang

Yi Zhao

Pierre Bertrand

Bin Jiao

Dajun Zhang

Haiyang Quan

Wei Bao

Aijuan Liu

Zhe Fu

Yumin Wu

Bertrand Pierre

Xiaodong Yang

Da Wang

Guoqing Li

Shanzhi Chen

Bo Hu

Jiancheng Sun

Li Chen

Na Liu

Xinyu Li

Huiru Kou

Zhixue Wang

An information transmission method includes: receiving, by first UE, Sidelink UE assistance information transmitted by second UE, wherein the Sidelink UE assistance information includes at least one piece of pattern information; determining, by the first UE according to the Sidelink UE assistance information, a resource occupied by transmission between the first UE and the second UE.

Sidelink user equipment assistance information transmission method between user equipments

The embodiments of the present application provide a wireless backhaul network, a communication method and an apparatus. The wireless backhaul network comprises at least one tree topology structure, each of the at least one tree topology structure being composed of a serving base station node and at least one relay node, the root of the tree topology structure being the serving base station node; and any two nodes in the wireless backhaul network are in a child-parent relationship or non-child-parent relationship, and any two nodes, which are in the child-parent relationship, communicate by means of wireless connections.

Wireless backhaul network, communication method and apparatus

The present disclosure provides a bearer mapping method of wireless backhaul node, a wireless backhaul node and a donor base station, the bearer mapping method includes: sending bearer configuration information to the wireless backhaul node, wherein the bearer configuration information is used to configure one or more of: a first bearer between the wireless backhaul node and the downstream wireless backhaul node or a UE; the bearer mapping relationship of the first bearer; a second bearer between the wireless backhaul node and the upstream wireless backhaul node or the donor base station; the bearer mapping relationship of the second bearer; and the bearer mapping relationship between the first bearer and the second bearer.

Bearer mapping method for wireless backhaul node, wireless backhaul node and donor base station

The present disclosure provides a method for activating a packet data convergence protocol (PDCP) duplication and a node device. The method includes: receiving, by a second node, a notification message transmitted by a first node when the first node configures a PDCP duplication for a bearer; after the second node receives the notification message, changing or determining, by the second node, an activation or deactivation state of uplink (UL) PDCP duplication of the bearer.

Method for activating packet data convergence protocol duplication and node device

An access method and a device are provided. The access method is applied to a first wireless backhaul node and includes: determining a previous hop node of the first wireless backhaul node, the previous hop node being a home donor base station of the first wireless backhaul node or being a second wireless backhaul node; and transmitting first information to the home donor base station directly or transmitting the first information to the home donor base station via the second wireless backhaul node.

Access method and device

Embodiments of the present application provide a method and device for transmitting data by means of a wireless backhaul network, for use in solving the problem in the prior art of inability to implement data transmission of a 5G wireless backhaul network due to that there is no network architecture for the 5G wireless backhaul network at present. In the embodiments of the present application, a terminal is connected to a wired backhaul access station by means of at least one path corresponding to a bearer, and transmits data with the wired backhaul access station by means of the at least one path; there is at least one wireless backhaul access station on any one path, each air interface of the terminal, the wired backhaul access station, and the wireless backhaul access station respectively corresponds to an underlying protocol combination, and the underlying protocol combination comprises an RLC layer, a MAC layer, and a PHY. The embodiments of the present application provide a network architecture for a 5G wireless backhaul network; a terminal transmits data with a wired backhaul access station by means of at least one path to implement data transmission of the 5G wireless backhaul network, so that the performance of the 5G wireless backhaul network is improved.

Method and device for transmitting data by means of wireless backhaul network

The present disclosure provides a retransmission activating/deactivating method, a base station, a user equipment and a device. The method includes: determining a correspondence relationship between a bearer which is allowed for retransmission under the first base station and a bit of a preset field of media access control (MAC) control element (CE) of the first base station for activating/deactivating retransmission; where the preset field is used to indicate activation/deactivation retransmission of the bearer which is allowed for retransmission; and, when determining to activate/deactivate retransmission of the bearer which is allowed for retransmission under the first base station, populating, by the first base station, the bit, which is in the preset field of the MAC CE for activating/deactivating retransmission and corresponding to the bearer, thereby generating the MAC CE for activating/deactivating retransmission, and transmitting to the UE the generated MAC CE for activating/deactivating retransmission.

Retransmission activating/deactivating method, base station, user equipment and device

A data retransmission method and device are provided to resolve a problem of lacking in a retransmission scheme supporting retransmission via different connections in the prior art. In one embodiment of the invention, the method comprises: upon determining that a transmission node corresponding to a terminal satisfies a multi-transmission node retransmission criterion, selecting, by a target protocol layer in a transmitting device and responsible for managing transmission via multiple transmission nodes, and for a retransmission data packet corresponding to the terminal, at least one transmission node; and performing, via the selected transmission node, data packet retransmission. The embodiment is employed to select, upon determining that a transmission node corresponding to a terminal satisfies the multi-transmission node retransmission criterion, and for a retransmission data packet corresponding to the terminal, at least one transmission node, thereby implementing retransmission via different connects, further increasing reliability and throughput of transmission in a system.

Data retransmission method and device

A synchronization method and apparatus, for verifying whether data cached by a base station and data cached by a terminal are synchronized. In embodiments of the present invention, a transmitting device and a receiving device generate cache check values on the basis of a predetermined acquisition mode; the receiving device compares the cache check values, and according to the comparison result, determines whether a decompression cache area and a compression cache area are synchronized. According to the present invention, a transmitting device and a receiving device sample some data from a data cache area by means of the same acquisition mode to generate cache check values, and the receiving device compares the cache check values, and according to the comparison result, determines whether the decompression cache area and the compression cache area are synchronized.

Synchronization method and apparatus

Disclosed in the present disclosure are a processing method and device for a cache synchronous exception, for solving the problem that no solution for a compression check failure is available in the prior art. According to embodiments of the present disclosure, when caches are out of synchronization, a caching failure notification message is sent to a transmitting device; a reset processing is carried out on a compressed cache area, and a reset instruction is sent; and then subsequent data packet transmission is carried out by using reset cache areas. In the present disclosure, after it is determined that the caches are out of synchronization, the caching failure notification message is sent; the transmitting device performs a reset processing on the compressed cache area, and notifies a receiving device to carry out a reset processing on a decompressed cache area.

Processing method and device for cache synchronous exception

Disclosed in the present application are a data processing method and apparatus. The method comprises: on a sending end, receiving a to-be-sent data packet transmitted from a higher layer, and performing 'transport-layer layer-1' processing on the to-be-sent data packet, comprising assigning a sequence number; and then performing 'transport-layer layer-2' processing, comprising: according to the size of a transmission resource obtained by means of scheduling, transferring the to-be-sent data packet to a physical layer and then sending out the to-be-sent data packet through an air interface; on a reception end, receiving the data packet that is sent from the air interface and then that is transmitted by the physical layer; performing &#x201c;transport-layer layer-2&#x201d; processing on the received data packet, comprising: transmitting the data packet transmitted by the physical layer, to the transport-layer layer-2 to perform processing.

Data processing method and apparatus to reduce an overhead in a layer two protocol

A duplication transmission method and device, used for solving the problem in existing technology of a scheme for implementing packet data convergence protocol (PDCP) duplication having yet to be implemented in a central unit/distribute unit (CU/DU) separation scenario. According to the embodiments of the present invention, after determining the need for PDCP duplication transmission on a radio bearer, a CU sends a PDCP data packet transmitted on the radio bearer to a DU and instructs the DU to carry out the PDCP duplication transmission; and the DU sends the PDCP data packet to multiple radio link control (RLC) entities corresponding to the radio bearer so as to carry out the PDCP duplication transmission. Since the CU may instruct the DU to perform the PDCP duplication transmission, the PDCP data packet is subject to duplication transmission in the CU/DU separation scenario, thereby further improving the system performance.

Duplication transmission method and device

A method for processing information and a device for processing information are provided. The method for processing information is applied to a first node. The method includes: receiving, by the first node, an indication message from a network side, wherein the indication message indicates a user equipment under the first node to hand over to a second node; and negotiating, by the first node, with the second node to reserve radio link layer control protocol (RLC) status information and cached data of all bearers of the user equipment, so that the second node provides a continuing data service to the user equipment based on the reserved information.

Method and device for processing information

A method for managing a wireless system area, a terminal and a base station are provided. A new location management area for the terminal in an inactive connection state/RRC idle state is defined. The process of moving among different nodes in the area is simplified.

Method for managing wireless system area, terminal and base station

A method and system for sending and receiving data, for use in solving the problem that an RLC layer may process a data packet in a whole only when a transmission time arrives, which renders a long processing time in the entire process. In embodiments of the present invention, received PDCP PDUs are combined into RLC PDUs and are allocated with corresponding RLC SNs, wherein each RLC PDU corresponds to an RLC SN, and each RLC PDU comprises at least one PDCP PDU; data corresponding to scheduling resources is generated according to the generated RLC PDUs; the data corresponding to the scheduling resources is combined into an MAC PDU for data receiving. The solution in the embodiments of the present invention may shorten the length of time in layer-2 data packet processing.

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Beijing, China

Jiamin Liu