EP-4738931-A1 - INFORMATION TRANSMISSION METHOD, AND USER EQUIPMENT AND STORAGE MEDIUM

EP4738931A1EP 4738931 A1EP4738931 A1EP 4738931A1EP-4738931-A1

Abstract

Provided in the present application are an information transmission method, and a user equipment and a storage medium. The method comprises: receiving a first message sent by a previous-hop node in a first transmission direction, wherein the first message comprises a system information request related parameter and/or a paging related parameter; and sending a second message to a next-hop node in the first transmission direction, wherein the second message is generated on the basis of at least one first message. In the method in the present invention, when a remote user equipment (Remote UE) accesses a network device by means of a plurality of hops, the Remote UE can obtain system information and/or receive a Paging message.

Inventors

ZHAO, YALI

Assignees

Datang Mobile Communications Equipment Co., Ltd.

Dates

Publication Date: 20260506
Application Date: 20240701

Claims (20)

An information transmission method applied to a UE-to-UE relay (U2U Relay), comprising: receiving a first message sent by a previous-hop node in a first transmission direction, wherein the first message comprises a system information request related parameter and/or a paging related parameter; and sending a second message to a next-hop node in the first transmission direction, wherein the second message is generated on the basis of at least one first message; wherein the system information request related parameter comprises requested system information block (SIB) indication information and/or system information (SI) message indication information; the paging related parameter comprises user equipment identification information of a remote user equipment (Remote UE); the previous-hop node comprises the remote user equipment or U2U Relay, and the next-hop node comprises a U2U Relay or a UE-to-network relay (U2N Relay).
The method according to claim 1, wherein sending the second message to the next-hop node in the first transmission direction comprises at least one of the following: when the first message comprises the system information request related parameter, sending the second message to the next-hop node in the first transmission direction; when the first message comprises the paging related parameter, sending the second message to the next-hop node in the first transmission direction; when the first message comprises the system information request related parameter and a first condition is met, sending the second message to the next-hop node in the first transmission direction; or when the first message comprises the paging related parameter and a second condition is met, sending the second message to the next-hop node in the first transmission direction.
The method according to claim 2, wherein the first condition comprises one of the following conditions or a combination thereof: an SIB indicated by the SIB indication information or an SI message indicated by the SI message indication information is not stored; the SIB indicated by the SIB indication information or the SI message indicated by the SI message indication information is stored and the SIB or the SI message is invalid; a time interval between a moment of receiving the first message containing the system information request related parameter and a moment of receiving the first message containing the system information request related parameter last time is greater than a first preset threshold T1; or a content of the system information request related parameter contained in the first message is different from contents of the system information request related parameters contained in the first messages received last N times, wherein N is an integer greater than or equal to 1.
The method according to claim 2, wherein the second condition comprises one of the following conditions or a combination thereof: a time interval between a moment of receiving the first message containing the paging related parameter and a moment of receiving the first message containing the paging related parameter last time is greater than a first preset threshold T1; or a content of the paging related parameter contained in the first message is different from contents of the paging related parameters contained in the first messages received last M times, wherein M is an integer greater than or equal to 1.
The method according to claim 1, wherein the generation of the second message on the basis of the at least one first message comprises one of the following: directly taking the first message as the second message; generating the second message according to at least two first messages received from one or more previous-hop nodes in the first transmission direction; or generating the second message according to at least one first message received from one or more previous-hop nodes in the first transmission direction and the system information request related parameter and/or the paging related parameter corresponding to the U2U Relay.
The method according to claim 5, wherein generating the second message according to the at least two first messages received from the one or more previous-hop nodes in the first transmission direction comprises: the second message comprising system information request related parameter and/or paging related parameter, merging the system information request related parameters contained in the at least two first messages, and deleting repeated parts to obtain the system information request related parameter in the second message; and merging the paging related parameters in the at least two first messages, and deleting repeated parts to obtain the paging related parameter in the second message.
The method according to claim 5, wherein generating the second message according to the at least one first message received from the one or more previous-hop nodes in the first transmission direction and the system information request related parameter and/or the paging related parameter corresponding to the U2U Relay comprises: the second message comprising system information request related parameter and/or paging related parameter, merging the system information request related parameter contained in the at least one first message with the system information request related parameter corresponding to the U2U Relay, and deleting repeated parts to obtain the system information request related parameter in the second message; and merging the paging related parameter in the at least one first message with the paging related parameter corresponding to the U2U Relay, and deleting repeated parts to obtain the paging related parameter in the second message.
The method according to any one of claims 1 to 7, wherein the first message and the second message are RemoteUEInformationSidelink messages.
An information transmission method applied to a UE-to-UE relay (U2U Relay), comprising: receiving a third message sent by a previous-hop node or a network device in a second transmission direction, wherein the third message comprises system information and/or a paging message; and sending a fourth message to a next-hop node in the second transmission direction, wherein the fourth message is generated according to at least one third message; wherein the system information at least comprises a system information block (SIB) or a system information (SI) message; the previous-hop node comprises a UE-to-network relay (U2N Relay) or U2U Relay, and the next-hop node comprises a U2U Relay or Remote UE.
The method according to claim 9, further comprising: storing all or part of a content contained in the third message, and all or part of the content contained in the third message comprises at least one of the following: storing the SIB or the SI message or the paging message contained in the third message; when the SIB contained in the third message is not identical to an SIB currently stored by a user equipment, storing a different SIB; when the SI message contained in the third message is not identical to an SI message currently stored by the user equipment, storing a different SI message; or when a time interval between a third message receiving moment and a last third message receiving moment is greater than a second preset threshold T2, storing the SIB or the SI message or the paging message contained in the third message.
The method according to claim 9, wherein the fourth message comprises at least one of: system information requested by a next-hop node of the U2U relay in the second transmission direction, wherein the system information requested by the next-hop node comprises an SIB and/or an SI message; or the paging message corresponding to the next-hop node of the U2U relay in the second transmission direction or the U2U relay and/or the remote user equipment connected to the next-hop node.
The method according to claim 9, wherein sending the fourth message to the next-hop node in the second transmission direction comprises: in a case where a third condition is met, sending the fourth message to the next-hop node in the second transmission direction; wherein the third condition comprises one of the following conditions or a combination thereof: the paging message corresponding to the next-hop node in the second transmission direction is monitored; the paging message corresponding to the remote user equipment served by the next-hop node in the second transmission direction is monitored; the paging message corresponding to the U2U Relay served by the next-hop node in the second transmission direction is monitored; the SIB or the SI message requested by the next-hop node in the second transmission direction is acquired; an SIB or an SI message requested by the remote user equipment served by the next-hop node in the second transmission direction is acquired; an SIB or an SI message requested by the U2U Relay served by the next-hop node in the second transmission direction is acquired; or the system information is updated and the updated system information is acquired.
The method according to any one of claims 9 to 12, wherein the third message and the fourth message are UuMessageTransferSidelink messages.
An information transmission method applied to a user equipment-to-network relay (U2N Relay), comprising: receiving a second message sent by a previous-hop node in a first transmission direction, wherein the second message comprises a system information request related parameter and/or a paging related parameter; and sending a third message to a next-hop node in a second transmission direction, wherein the third message is a response message to the second message; wherein the system information request related parameter comprises requested system information block (SIB) indication information or system information (SI) message indication information; the paging related parameter comprises user equipment identification information of a remote user equipment or user equipment identification information of a U2U Relay UE served by the U2N Relay; the previous-hop node comprises a U2U Relay, and the next-hop node comprises a U2U Relay.
The method according to claim 14, wherein sending the third message to the next-hop node in the second transmission direction comprises: in a case where a fourth condition is met, sending the third message to the next-hop node in the second transmission direction; wherein the fourth condition comprises one of the following conditions or a combination thereof: a paging message corresponding to the next-hop node in the second transmission direction is monitored; a paging message corresponding to a remote user equipment served by the next-hop node in the second transmission direction is monitored; a paging message corresponding to a U2U Relay served by the next-hop node in the second transmission direction is monitored; the SIB or the SI message requested by the next-hop node in the second transmission direction is acquired; an SIB or an SI message requested by the remote user equipment served by the next-hop node in the second transmission direction is acquired; an SIB or an SI message requested by the U2U Relay served by the next-hop node in the second transmission direction is acquired; or system information is updated and the updated system information is acquired.
The method according to claim 14, wherein the third message is the response message to the second message, which comprises one of the following cases or a combination thereof: the response message comprises a full or partial response to the SIB requested in the second message; or the response message comprises the paging message corresponding to the remote user equipment served by the next-hop node and/or the paging message corresponding to the U2U Relay served by the next-hop node.
The method according to claim 15, after the second message is received from the previous-hop node in the first transmission direction, further comprising: storing the requested system information block (SIB) indication information or system information (SI) message indication information in the second message; and/or storing the user equipment identification information of the remote user equipment (Remote UE) in the second message.
The method according to any one of claims 14 to 17, wherein the third message is a UuMessageTransferSidelink message.
A UE-to-UE relay (U2U Relay), comprising: a memory for storing a computer program; a transceiver for receiving and sending data under control of a processor; and the processor for reading the computer program in the memory and performing the following operations: receiving a first message sent by a previous-hop node in a first transmission direction, wherein the first message comprises a system information request related parameter and/or a paging related parameter; and sending a second message to a next-hop node in the first transmission direction, wherein the second message is generated on the basis of at least one first message; wherein the system information request related parameter comprises requested system information block (SIB) indication information or system information (SI) message indication information; the paging related parameter comprises user equipment identification information of the remote user equipment (Remote UE); the previous-hop node comprises a remote user equipment or U2U Relay and the next-hop node comprises a U2U Relay or a user equipment-to-network relay (U2N Relay).
The U2U Relay according to claim 19, wherein sending the second message to the next-hop node in the first transmission direction comprises at least one of the following: when the first message comprises the system information request related parameter, sending the second message to the next-hop node in the first transmission direction; when the first message comprises the paging related parameter, sending the second message to the next-hop node in the first transmission direction; when the first message comprises the system information request related parameter and a first condition is met, sending the second message to the next-hop node in the first transmission direction; or when the first message comprises the paging related parameter and a second condition is met, sending the second message to the next-hop node in the first transmission direction.

Description

CROSS-REFERENCE The present application cites Chinese Patent Application No. 2023109888671, entitled "Information Transmission Method, User Equipment and Storage Medium", filed on August 7, 2023, which is incorporated herein by reference in its entirety. TECHNICAL FIELD The present application relates to the field of communication technologies, and in particular, to an information transmission method, a user equipment and a storage medium. BACKGROUND In order to extend network coverage, one solution is to introduce a U2N Relay (UE-to-Network Relay). The relay may be a user equipment with a relay function, or a non-user equipment device dedicated to the relay function. An interface between the relay and a network is a Uu interface, and a direct communication interface (also referred to as PC5 interface) is used between the relay and a relayed user equipment (also referred to as remote user equipment (Remote UE)). Generally, one-hop relay is sufficient, but for some special scenarios such as earthquake scenarios, the entire network may crash, and it may be necessary to use multi-hop relay. In the multi-hop relay scenario, the user equipment may access the network through one U2N Relay and at least one U2U Relay (UE-to-Network Relay). However, in the prior art, in the multi-hop relay scenario, currently, there is no relevant solution for ensuring that the remote user equipment or the relayed user equipment can acquire system information or receive a paging message. SUMMARY An objective of the present application is to provide an information transmission method, a user equipment and a storage medium, which are used for enabling a remote user equipment to acquire system information or receive a paging message in a multi-hop relay scenario. In a first aspect, embodiments of the present application provide an information transmission method applied to a UE-to-UE relay (U2U Relay), including: receiving a first message sent by a previous-hop node in a first transmission direction, where the first message includes a system information request related parameter and/or a paging related parameter; andsending a second message to a next-hop node in the first transmission direction, where the second message is generated on the basis of at least one first message;where the system information request related parameter includes requested system information block (SIB) indication information and/or system information (SI) message indication information;the paging related parameter includes user equipment identification information of the remote user equipment (Remote UE);the previous-hop node includes a remote user equipment or U2U Relay and the next-hop node includes a U2U Relay or a UE-to-network relay (U2N Relay). In the invention, the U2U Relay receives the system information request related parameter and/or the paging related parameter sent by the remote user equipment or the previous-hop U2U Relay, and forwards the information to the next-hop node, thereby sending the system information request related parameter and/or the paging related parameter to a network device. Optionally, sending the second message to the next-hop node in the first transmission direction includes at least one of the following: when the first message includes the system information request related parameter, sending the second message to the next-hop node in the first transmission direction;when the first message includes the paging related parameter, sending the second message to the next-hop node in the first transmission direction;when the first message includes the system information request related parameter and a first condition is met, sending the second message to the next-hop node in the first transmission direction; orwhen the first message includes the paging related parameter and a second condition is met, sending the second message to the next-hop node in the first transmission direction. Optionally, the first condition includes one of the following conditions or a combination thereof: an SIB indicated by the SIB indication information or an SI message indicated by the SI message indication information is not stored;the SIB indicated by the SIB indication information or the SI message indicated by the SI message indication information is stored and the SIB or the SI message is invalid;a time interval between a moment of receiving the first message containing the system information request related parameter and a moment of receiving the first message containing the system information request related parameter last time is greater than a first preset threshold T1;a content of the system information request related parameter contained in the received first message is different from that of the system information request related parameter contained in the first message received last time; orthe content of the system information request related parameter contained in the first message is different from the contents of the system informatio