# US 12,225,455 B2 · Information transmission method, user equipment and network device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,455 B2 - Document ID: US12225455B2 - Status: Granted - Kind: B2 - Application number: 17/788,178 - Filed: 2020-12-28 - Published: 2023-01-26 - Granted: 2025-02-11 - Earliest claimed: 2020-01-03 - Assignees: Datang Mobile Communications Equipment Co., Ltd. - Applicants: Datang Mobile Communications Equipment Co., Ltd. - Inventors: Yali Zhao - Web page: https://patentgrep.com/patent/US12225455B2 ## CPC - H04W 28/0958: {based on metrics or performance parameters} - H04W 48/20: Selecting an access point - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 45/24: Multipath - H04W 40/22: using selective relaying for reaching a BTS [Base Transceiver Station] or an access point - H04W 76/14: Direct-mode setup - H04L 45/121: by minimising delays - H04L 2001/0097: {Relays} - H04W 88/04: adapted for relaying to or from another terminal or user - H04W 92/10: between terminal device and access point, i.e. wireless air interface - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present disclosure provides an information transmission method, a UE and a network device, so as to solve the problem that the data transmission reliability is low when the UE accesses a network through a relay. The information transmission method includes transmitting duplicated data to a network device through one of: N relays, where N is a positive integer greater than or equal to 2; or an air interface between the UE and the network device as well as M relays, where M is a positive integer greater than or equal to 1. ## Claims ### Claim 1 An information transmission method performed by a User Equipment (UE), the information transmission method comprising: transmitting duplicated data to a network device through one of: N relays, where N is a positive integer greater than or equal to 2; or an air interface between the UE and the network device as well as M relays, where M is a positive integer greater than or equal to 1, wherein the UE is directly connected with a plurality of relays within the N relays simultaneously, the UE is connected with the network device through different paths established via the plurality of relays within the N relays, and the UE is configured to send its own data to the network device through one or more paths within the different paths. ### Claim 2 (depends on 1) The information transmission method according to claim 1, wherein the N relays are of a same relay type and belong to a same serving cell or a same serving network node. ### Claim 3 (depends on 1) The information transmission method according to claim 1, wherein prior to transmitting the duplicated data to the network device, the information transmission method further comprises: in the case that a target bearer needs to be configured or retransmission has been activated, selecting T relays, where T is equal to N or M; creating respectively relay connection between the UE and the network device through the T relays; creating a first association relation among T relay links formed by the T relays, or creating a second association relation between (i) the air interface between the UE and the network device and (ii) each of the T relay links formed by the T relays, the first association relation being used to indicate the target bearer to transmit same data through the T relay links, the second association relation being used to indicate the target bearer to transmit same data through the air interface and the T relay links; and performing duplication processing on a to-be-transmitted data packet for the target bearer to obtain the duplicated data. ### Claim 4 (depends on 3) The information transmission method according to claim 3, wherein the selecting the T relays comprises: selecting the T relays simultaneously in one relay selection procedure; or selecting the T relays in multiple relay selection procedures. ### Claim 5 (depends on 4) The information transmission method according to claim 4, wherein the selecting the T relays simultaneously in one relay selection procedure comprises: selecting the T relays from relays whose Reference Signal Received Power (RSRP) value is above a first RSRP threshold configured by the network device in a descending order of the RSRP values; or selecting the T relays in the descending order of the RSRP values of the relays. ### Claim 6 (depends on 3) The information transmission method according to claim 3, wherein the creating the first association relation among the T relay links formed by the T relays or creating the second association relation between (i) the air interface between the UE and the network device and (ii) each of the T relay links formed by the T relays comprises: creating the first association relation among the T relay links formed by the T relays or creating the second association relation between (i) the air interface between the UE and the network device and (ii) each of the T relay links formed by the T relays through control plane signaling; or creating the first association relation among the T relay links formed by the T relays or creating the second association relation between (i) the air interface between the UE and the network device and (ii) each of the T relay links formed by the T relays through user plane signaling. ### Claim 7 (depends on 6) The information transmission method according to claim 6, wherein the creating the first association relation among the T relay links formed by the T relays or creating the second association relation between (i) the air interface between the UE and the network device and (ii) each of the T relay links formed by the T relays through control plane signaling comprises: with respect to each relay link, recording at least one of an air interface (Uu) Radio Bearer (RB) Identity (ID), a Uu Logic Channel Identity (LCID), a relay UE ID, a UE ID, a source L2 ID, a destination L2 ID, an LCID, or a Sidelink Radio Bearer (SLRB) ID. ### Claim 8 (depends on 7) The information transmission method according to claim 7, wherein links with a same Uu RB ID and a same UE ID are used by the UE as a downlink retransmission path. ### Claim 9 (depends on 6) The information transmission method according to claim 6, wherein the creating the first association relation among the T relay links formed by the T relays or creating the second association relation between (i) the air interface between the UE and the network device and (ii) each of the T relay links formed by the T relays through user plane signaling comprises: creating the first association relation among the T relay links formed by the T relays or creating the second association relation between (i) the air interface between the UE and the network device and (ii) each of the T relay links formed by the T relays through a UE ID and an RB ID carried in a user plane data header. ### Claim 10 (depends on 9) The information transmission method according to claim 9, wherein the RB ID is a Uu RB ID for downlink. ### Claim 11 (depends on 1) The information transmission method according to claim 1, further comprising: receiving duplicated data from the network device through one of: N relays, where N is a positive integer greater than or equal to 2; or an air interface between the UE and the network device as well as M relays, where M is a positive integer greater than or equal to 1. ### Claim 12 (depends on 11) The information transmission method according to claim 11, wherein subsequent to receiving the duplicated data from the network device, the information transmission method further comprises: performing duplication detection and re-ordering on data in the duplicated data belonging to a same bearer. ### Claim 13 An information transmission method performed by a network device, the information transmission method comprising: receiving duplicated data from a User Equipment (UE) through one of: N relays, where N is a positive integer greater than or equal to 2; or an air interface between the UE and the network device as well as M relays, where M is a positive integer greater than or equal to 1, wherein the UE is directly connected with a plurality of relays within the N relays simultaneously, the UE is connected with the network device through different paths established via the plurality of relays within the N relays, and the UE is configured to send its own data to the network device through one or more paths within the different paths. ### Claim 14 (depends on 13) The information transmission method according to claim 13, wherein prior to receiving the duplicated data from the UE, the information transmission method further comprises: after relay connection has been created between the network device and the UE, creating a first association relation among a plurality of relay links formed by the relay connection, or creating a second association relation between (i) the air interface between the UE and the network device and (ii) each of the plurality of relay links formed by the relay connection, wherein the first association relation is used to indicate a target bearer to transmit same data through the plurality of relay links, and the second association relation is used to indicate the target bearer to transmit same data through the air interface and the plurality of relay links. ### Claim 15 (depends on 14) The information transmission method according to claim 14, wherein the creating the first association relation among the plurality of relay links formed by the relay connection or creating the second association relation between the air interface between the UE and the network device and each of the plurality of relay links formed by the relay connection comprises: creating the first association relation among the plurality of relay links formed by the relay connection or creating the second association relation between (i) the air interface between the UE and the network device and (ii) each of the plurality of relay links formed by the relay connection through control plane signaling; or creating the first association relation among the plurality of relay links formed by the relay connection or creating the second association relation between (i) the air interface between the UE and the network device and (ii) each of the plurality of relay links formed by the relay connection through user plane signaling. ### Claim 16 (depends on 13) A network device, comprising a transceiver, a memory, a processor, and a program stored in the memory and executed by the processor, when the program is called and executed by the processor of the network device, the information transmission method according to claim 13 is realized. ### Claim 17 (depends on 16) The network device according to claim 16, wherein the processor is configured to read the program in the memory, so as to, after relay connection has been created between the network device and the UE, create a first association relation among a plurality of relay links formed by the relay connection, or create a second association relation between (i) the air interface between the UE and the network device and (ii) each of the plurality of relay links formed by the relay connection, the first association relation is used to indicate a target bearer to transmit same data through the plurality of relay links, and the second association relation is used to indicate the target bearer to transmit same data through the air interface and the plurality of relay links. ### Claim 18 (depends on 16) The network device according to claim 16, wherein the processor is further configured to perform duplication detection and re-ordering on data in the duplicated data belonging to a same bearer. ### Claim 19 A User Equipment (UE), comprising a transceiver, a memory, a processor, and a program stored in the memory and executed by the processor, wherein the transceiver is configured to transmit duplicated data to a network device through one of: N relays, where N is a positive integer greater than or equal to 2; or an air interface between the UE and the network device as well as M relays, where M is a positive integer greater than or equal to 1, wherein the UE is directly connected with a plurality of relays within the N relays simultaneously, the UE is connected with the network device through different paths established via the plurality of relays within the N relays, and the UE is configured to send its own data to the network device through one or more paths within the different paths. ### Claim 20 (depends on 19) The UE according to claim 19, wherein the processor is configured to read the program in the memory, so as to: in the case that a target bearer needs to be configured or retransmission has been activated, select T relays, where T is equal to N or M; create respectively relay connection between the UE and the network device through the T relays; create a first association relation among T relay links formed by the T relays, or create a second association relation between (i) the air interface between the UE and the network device and (ii) each of the T relay links formed by the T relays, the first association relation being used to indicate the target bearer to transmit same data through the T relay links, the second association relation being used to indicate the target bearer to transmit same data through the air interface and the T relay links; and perform duplication processing on a to-be-transmitted data packet for the target bearer to obtain the duplicated data.