Information transmission method, information acquisition method, network side device, and readable storage medium

Abstract

The present application discloses an information transmission and acquisition method and a network side device, which belong to the field of communication technology, the method including: when at least one remote terminal establishes an RRC connection with a first network side device through a relay terminal, the first network side device sets terminal context information, and when the terminal context information is context information of a relay terminal, the terminal context information includes first related information of a remote terminal served by the relay terminal, and / or when the terminal context information is context information of a remote terminal, the terminal context information includes second related information of a relay terminal providing a relay service to the remote terminal.

Description

[Technical field]

[0001] The present invention relates to the field of communication technology, and in particular to an information transmission and acquisition method and a network side device. [Background technology]

[0002] In a scenario in which a remote terminal (Remote UE) establishes a Radio Resource Control (RRC) connection with a base station via a relay terminal (Relay UE), the RRC connection of the Remote UE is affected by two links, namely, a direct communication interface (PC5 interface) connection link and a cellular network communication interface (Uu interface) connection link. If the RRC connection of the Remote UE fails to connect on either of the above two links, the RRC connection of the Remote UE is difficult to recover quickly. Summary of the Invention [Problem to be solved by the invention]

[0003] The embodiments of the present application provide an information transmission and acquisition method and a network side device that can solve the problem that the RRC link of a remote UE is difficult to quickly recover when the connection is failed. [Means for solving the problem]

[0004] In the first aspect, When at least one remote terminal establishes an RRC connection with a first network side device via a relay terminal, the first network side device sets terminal context information; The present invention provides an information transmission method, in which, when the terminal context information is context information of a relay terminal, the terminal context information includes first related information of a remote terminal served by the relay terminal, and / or, when the terminal context information is context information of a remote terminal, the terminal context information includes second related information of a relay terminal providing a relay service to the remote terminal.

[0005] In a second embodiment, a step of a second network side device sending a terminal context acquisition request to a first network side device, the terminal context acquisition request being sent by the second network side device after the second network side device receives first information sent from a first terminal, the first network side device setting at least one of context information of a relay terminal and context information of a remote terminal, the context information of the relay terminal including first related information of a remote terminal serviced by the relay terminal, and the context information of the remote terminal including second related information of a relay terminal providing a relay service to the remote terminal; The second network side device acquires feedback information transmitted from the first network side device; When the feedback information is a terminal context acquisition response and the first terminal is a relay terminal, the terminal context acquisition response includes at least one of context information of the relay terminal and context information of the remote terminal; Alternatively, the present invention provides an information acquisition method, in which, when the feedback information is a terminal context acquisition response and the first terminal is a remote terminal, the terminal context acquisition response includes at least one of context information of the remote terminal and context information of the relay terminal.

[0006] In a third aspect, A first processing module for setting terminal context information when at least one remote terminal establishes an RRC connection with a first network side device via a relay terminal; An information transmission device is provided, wherein, when the terminal context information is context information of a relay terminal, the terminal context information includes first related information of a remote terminal served by the relay terminal, and / or, when the terminal context information is context information of a remote terminal, the terminal context information includes second related information of a relay terminal providing a relay service to the remote terminal.

[0007] In a fourth aspect, a second transmission module for transmitting a terminal context acquisition request to a first network side device, the terminal context acquisition request being transmitted by the second network side device after receiving first information transmitted from the first terminal, the first network side device setting at least one of context information of a relay terminal and context information of a remote terminal, the context information of the relay terminal including first related information of a remote terminal provided with a service by the relay terminal, and the context information of the remote terminal including second related information of a relay terminal providing a relay service to the remote terminal; A second receiving module for receiving feedback information transmitted from the first network side device, When the feedback information is a terminal context acquisition response and the first terminal is a relay terminal, the terminal context acquisition response includes at least one of context information of the relay terminal and context information of the remote terminal; Alternatively, an information acquisition device is provided, in which, when the feedback information is a terminal context acquisition response and the first terminal is a remote terminal, the terminal context acquisition response includes at least one of context information of the remote terminal and context information of the relay terminal.

[0008] In a fifth aspect, there is provided a network side device comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, and when the program or command is executed by the processor, the steps of the method described in the first aspect are realized or the steps of the method described in the second aspect are realized.

[0009] In a sixth aspect, there is provided a readable storage medium having a program or command stored thereon, the program or command causing the steps of the method according to the first aspect to be realized when executed by a processor, or causing the steps of the method according to the second aspect to be realized.

[0010] In a seventh aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, the processor for executing programs or commands to implement steps of the method of the first aspect or for implementing steps of the method of the second aspect.

[0011] In an eighth aspect, an embodiment of the present application provides a computer program product stored on a non-volatile storage medium and configured to, when executed by at least one processor, perform the steps of the method according to the first aspect or to perform the steps of the method according to the second aspect. Effect of the Invention

[0012] In an embodiment of the present application, a first network side device sets a context of a remote UE and / or a relay terminal, the context of the remote terminal includes second related information of the relay terminal providing relay service to the remote terminal, and the context of the relay terminal includes first related information of the remote terminal served by the relay terminal, so that the RRC connection of the remote UE can be quickly restored when a connection fails on either the PC5 interface connection link or the Uu interface connection link, and the reliability of relay communication is guaranteed. [Brief description of the drawings]

[0013] [Figure 1] 1 shows a structural diagram of a communication system to which an embodiment of the present application can be applied; [Diagram 2] 1 shows a flowchart of an information transmission method according to an embodiment of the present application. [Diagram 3] 1 shows a flowchart of an information acquisition method according to an embodiment of the present application. [Figure 4] FIG. 1 shows a first schematic diagram of interaction between a network side device and a terminal in an embodiment of the present application. [Diagram 5] FIG. 2 shows a second schematic diagram of the interaction between a network side device and a terminal in an embodiment of the present application. [Figure 6] 1 shows a module schematic diagram of an information transmission device according to an embodiment of the present application. [Figure 7] 1 shows a module schematic diagram of an information acquisition device according to an embodiment of the present application. [Figure 8] FIG. 2 shows a structural block diagram of a communication device according to an embodiment of the present application. [Figure 9] FIG. 2 shows a structural block diagram of a network side device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, the technical solutions in the embodiments of the present application will be clearly described with reference to the drawings in the embodiments of the present application, and it is to be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application are within the scope of protection of the present application.

[0015] The terms "first", "second", etc. in the specification and claims of the present application are not intended to describe a particular order or sequence, but are intended to distinguish between similar objects. It should be understood that the terms used in this manner may be substituted for each other where appropriate, so that the embodiments of the present application may be performed in an order other than that shown or described herein, and that the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited, for example, the first object may be one or more. In the specification and claims, "and / or" indicates at least one of the connected objects, and the symbol " / " generally indicates that the related objects before and after are in an "or" relationship.

[0016] It should be noted that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used in other systems and wireless technologies in addition to the systems and wireless technologies mentioned above. However, the following description describes a New Radio (NR) system for illustrative purposes, and much of the following description uses NR technical terminology, and these techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0017] In order to help those skilled in the art to better understand the embodiments of the present invention, a sidelink relay will first be described as follows.

[0018] Relay technology in wireless communication systems involves adding one or more relay nodes between a base station and a terminal to forward a wireless signal once or several times, meaning that the wireless signal needs to go through multiple hops to reach the terminal.

[0019] Wireless relay technology can not only be used to expand cell coverage and fill blind spots in cell coverage, but also increase cell capacity through spatial resource multiplexing. For indoor coverage, relay technology can reduce transmission loss and improve indoor coverage quality.

[0020] Taking the relatively simple two-hop relay as an example, wireless relay splits one link from the base station to the terminal into two links, one from the base station to the relay station and one from the relay station to the terminal, thereby replacing one low-quality link with two high-quality links, creating the possibility of obtaining higher link capacity and better coverage.

[0021] As shown in FIG. 1, one end of the relay terminal 13 is connected to a remote terminal 11, and the other end is connected to a network side device 12. Here, the remote terminal 11 may be called a terminal device or a user terminal (User Equipment, UE), and the remote terminal may be a terminal side device such as a mobile phone, a tablet computer, a laptop computer also called a notebook computer, a personal digital assistant (PDA), a personal digital assistant, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc., and the wearable device includes a wristband, an earphone, glasses, etc. It should be noted that the specific type of the remote terminal is not limited in the embodiments of the present application. The network side equipment 12 may be a base station or a core network equipment, and the base station may be called an access point, a base station transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or any other suitable term in the field, and the base station is not limited to a specific technical term as long as the same technical effect can be achieved, and it should be clarified that the embodiment of this application simply takes a base station in an NR system as an example, but the specific type of the base station is not limited.

[0022] The information transmission method provided in the embodiments of the present application will be described in detail below with reference to the drawings according to specific embodiments and application scenarios.

[0023] As shown in FIG. 2, the embodiment of the present application is The method includes: when at least one remote terminal establishes an RRC connection with a first network side device via a relay terminal, the first network side device sets terminal context information in step 201; The present invention provides an information transmission method, in which, when the terminal context information is context information of a relay terminal, the terminal context information includes first related information of a remote terminal served by the relay terminal, and / or, when the terminal context information is context information of a remote terminal, the terminal context information includes second related information of a relay terminal providing a relay service to the remote terminal.

[0024] Optionally, the first related information is: Identification information of at least one remote terminal, which may be in any form such as a source L2 ID, a destination L2 ID, a Cell Radio Network Temporary Identifier (C-RNTI), a local index assigned by the Relay UE, etc.; and first setting information associated with each of the identification information; The first setting information is Mapping first interface Radio Link Control (RLC) channels to second interface RLC channels; and Mapping a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping a second interface RLC channel to a bearer of the remote terminal; Mapping a second interface RLC channel to a bearer of the relay terminal; An RLC channel configuration of a first interface, which may be a PC5 interface, including at least one of a PC5 RLC channel ID, a PC5 physical layer (PC5 PHY layer), a Media Access Control (MAC) layer, and an RLC layer configuration; An RLC channel configuration of a second interface, which may be a Uu interface, including at least one of a Uu RLC channel ID, a Uu PHY layer, a MAC layer, and an RLC layer configuration; A bearer configuration of the remote terminal, including at least one of a Uu bearer ID, a Uu SDAP layer, a Uu PDCP layer, and a PC5 RLC channel configuration; A bearer configuration of the relay terminal, including at least one of a Uu bearer ID, a Uu SDAP layer, a Uu PDCP layer, and a Uu RLC channel configuration; The first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

[0025] Optionally, the second related information is: Identification information of at least one relay terminal, which may be in any form such as a source L2 ID, a destination L2 ID, a C-RNTI, a local index assigned by a Remote UE, etc.; and second setting information associated with each of the identification information; The second setting information is Mapping the first interface RLC channels to the second interface RLC channels; Mapping a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping a second interface RLC channel to a bearer of the remote terminal; Mapping a second interface RLC channel to a bearer of the relay terminal; An RLC channel configuration of a first interface, which may be a PC5 interface, including at least one of a PC5 RLC channel ID, a PC5 PHY layer, a MAC layer, and an RLC layer configuration; A RLC channel configuration of a second interface, which may be a Uu interface, including at least one of a Uu RLC channel ID, a Uu PHY layer, a MAC layer, an RLC layer, and an RLC channel ID configuration; A bearer configuration of the remote terminal, which may include at least one of a Uu bearer ID, a Uu SDAP layer, a Uu PDCP layer, and a PC5 RLC channel configuration; and a bearer configuration of the relay terminal, which may include at least one of a Uu bearer ID, a Uu SDAP layer, a Uu PDCP layer, and a Uu RLC channel configuration; The first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

[0026] In an embodiment of the present application, a first network side device sets a context of a remote UE and / or a relay terminal, the context of the remote terminal includes second related information of the relay terminal providing relay service to the remote terminal, and the context of the relay terminal includes first related information of the remote terminal served by the relay terminal, so that the RRC connection of the remote UE can be quickly restored when a connection fails on either the PC5 interface connection link or the Uu interface connection link, and the reliability of relay communication is guaranteed.

[0027] Optionally, the method of the present application further comprises: A step of receiving a terminal context acquisition request transmitted by a first network side device from a second network side device, the terminal context acquisition request being transmitted by the second network side device after receiving first information transmitted by the first terminal; The first network side device further includes a step of transmitting feedback information to the second network side device; When the feedback information is a terminal context acquisition response and the first terminal is a relay terminal, the terminal context acquisition response includes at least one of context information of the relay terminal and context information of the remote terminal; Or, when the feedback information is a terminal context acquisition response and the first terminal is a remote terminal, the terminal context acquisition response includes at least one of context information of the remote terminal and context information of the relay terminal.

[0028] Optionally, the first information may be an RRC re-establishment request or an RRC connection recovery request.

[0029] In an embodiment of the present application, a first network side equipment sets a context of a remote UE and / or a relay terminal, the context of the remote terminal includes second related information of the relay terminal providing relay service to the remote terminal, the context of the relay terminal includes first related information of the remote terminal served by the relay terminal, and is capable of sending at least one of the context of the remote terminal and the context of the relay terminal to the second network side equipment, so that the RRC connection of the remote UE can be quickly restored when a connection fails on either the PC5 interface connection link or the Uu interface connection link, and the reliability of the relay communication is guaranteed.

[0030] As shown in FIG. 3, the embodiment of the present application is Step 301: a second network side device transmits a terminal context acquisition request to a first network side device, the terminal context acquisition request is transmitted by the second network side device after receiving first information transmitted from a first terminal, the first network side device sets at least one of context information of a relay terminal and context information of a remote terminal, the context information of the relay terminal includes first related information of a remote terminal provided with a service by the relay terminal, and the context information of the remote terminal includes second related information of a relay terminal providing a relay service to the remote terminal; Step 302: the second network side device acquires feedback information sent from the first network side device; When the feedback information is a terminal context acquisition response and the first terminal is a relay terminal, the terminal context acquisition response includes at least one of context information of the relay terminal and context information of the remote terminal; Alternatively, the present invention further provides an information acquisition method, in which, when the feedback information is a terminal context acquisition response and the first terminal is a remote terminal, the terminal context acquisition response includes at least one of context information of the remote terminal and context information of the relay terminal.

[0031] In an embodiment of the present application, a first network side equipment sets a context of a remote UE and / or a relay terminal, the context of the remote terminal includes second related information of the relay terminal providing relay service to the remote terminal, the context of the relay terminal includes first related information of the remote terminal served by the relay terminal, and is capable of sending at least one of the context of the remote terminal and the context of the relay terminal to the second network side equipment, so that the RRC connection of the remote UE can be quickly restored when a connection fails on either the PC5 interface connection link or the Uu interface connection link, and the reliability of the relay communication is guaranteed.

[0032] Optionally, the first related information is: an identification of at least one remote terminal; and first setting information associated with each of the identification information; The first setting information is Mapping the first interface radio link control (RLC) channels to the second interface (RLC) channels; Mapping a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping a second interface RLC channel to a bearer of the remote terminal; Mapping a second interface RLC channel to a bearer of the relay terminal; A first interface RLC channel configuration; A second interface RLC channel configuration; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; The first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

[0033] Optionally, the second related information is: Identification information of at least one relay terminal; and second setting information associated with each of the identification information; The second setting information is Mapping the first interface RLC channels to the second interface RLC channels; Mapping a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping a second interface RLC channel to a bearer of the remote terminal; Mapping a second interface RLC channel to a bearer of the relay terminal; A first interface RLC channel configuration; A second interface RLC channel configuration; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; The first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

[0034] It should be noted that the first related information is the same as the first related information in the embodiment of the information transmission method, and the second related information is the same as the second related information in the embodiment of the information transmission method, and detailed explanations are omitted here.

[0035] Alternatively, when the first terminal is a relay terminal, after the second network side device receives feedback information transmitted from the first network side device, The method further includes a step of a second network side device sending a first RRC reconfiguration to a remote terminal served by the first terminal, the first RRC reconfiguration including a delta configuration generated based on a context of the remote terminal.

[0036] Optionally, when the feedback information is terminal context acquisition failure information and the first terminal is a relay terminal, after the second network side device acquires the feedback information transmitted from the first network side device, The method further includes a step of a second network side device sending a second RRC reconfiguration to a remote terminal served by the first terminal, the second RRC reconfiguration including a full configuration.

[0037] Optionally, when the first terminal is a remote terminal, after the second network side device receives feedback information transmitted from the first network side device, The method further includes a step of sending a third RRC reconfiguration by a second network side device to a relay terminal providing service to the first terminal, the third RRC reconfiguration including an incremental configuration generated based on a context of the relay terminal.

[0038] Optionally, when the feedback information is terminal context acquisition failure information and the first terminal is a remote terminal, after the second network side device acquires the feedback information transmitted from the first network side device, The method further includes a step of sending a fourth RRC reconfiguration by a second network side device to a relay terminal providing service to the first terminal, the fourth RRC reconfiguration including all configurations.

[0039] In an embodiment of the present application, a first network side equipment sets a context of a remote UE and / or a relay terminal, the context of the remote terminal includes second related information of the relay terminal providing relay service to the remote terminal, the context of the relay terminal includes first related information of the remote terminal served by the relay terminal, and is capable of sending at least one of the context of the remote terminal and the context of the relay terminal to the second network side equipment, so that the RRC connection of the remote UE can be quickly restored when a connection fails on either the PC5 interface connection link or the Uu interface connection link, and the reliability of the relay communication is guaranteed.

[0040] The present application will now be described in connection with specific examples.

[0041] Example 1: Method for setting Relay UE context by network side when both Remote UE and Relay UE are in RRC connected state As shown in FIG. 4, the method of the present application includes the following steps 401 to 4062.

[0042] Step 401: When at least one Remote UE establishes an RRC connection with a source serving base station through a Relay UE, the source serving base station configures context information of the Relay UE.

[0043] The context information of the Relay UE includes first related information of the Remote UE served by the Relay UE.

[0044] Step 402: The Relay UE initiates an RRC re-establishment request to the target base station via the Uu interface.

[0045] Step 403: The target base station initiates a UE context acquisition request to the source serving base station.

[0046] Step 4041: The source serving base station sends a UE context acquisition response to the target base station, in which the UE context acquisition response carries first related information of the Remote UE served by the Relay UE.

[0047] Step 4042: The source serving base station sends terminal context acquisition failure information to the target base station.

[0048] Step 4051: The target base station sends an RRC re-establishment to the Relay UE.

[0049] In step 4051, the Relay UE sends an RRC re-establishment completion to the target UE.

[0050] Step 4052: The target base station sends an RRC connection establishment to the Relay UE.

[0051] In step 4052, the Relay UE sends an RRC connection establishment completion to the target base station.

[0052] Step 4061: The target base station sends an RRC reconfiguration to a Remote UE served by the Relay UE, in which a delta configuration is carried.

[0053] In step 4061, the Remote UE sends an RRC reconfiguration complete to the target base station.

[0054] Step 4062: The target base station sends an RRC reconfiguration to the Remote UE served by the Relay UE, where the RRC reconfiguration carries a full configuration.

[0055] In step 4062, the Remote UE sends an RRC reconfiguration complete to the target base station.

[0056] It should be noted that the above steps 4041 and 4042 are parallel steps, the above steps 4051 and 4052 are parallel steps, the above steps 4061 and 4062 are parallel steps, and after the execution of the above step 4041 is completed, the above steps 4051 and 4061 are executed successively, and after the execution of the above step 4042 is completed, the above steps 4052 and 4062 are executed successively.

[0057] Furthermore, when the Remote UE is in the RRC Connected state and the Relay UE is in the RRC Inactive state, the first embodiment can basically be used, and the description regarding the RRC re-establishment of the Relay UE may be replaced with RRC resume (connection recovery).

[0058] Example 2: Method for setting Remote UE context by network side when both Remote UE and Relay UE are in RRC Connected state As shown in FIG. 5, the method of the present application includes the following steps 501 to 5062.

[0059] Step 501: When at least one Remote UE establishes an RRC connection with a source serving base station through a Relay UE, the source serving base station configures context information of the Remote UE.

[0060] The context information of a Remote UE includes second related information of a Relay UE providing a relay service to the Remote UE.

[0061] Step 502: The Remote UE initiates an RRC re-establishment request to the target base station via the Uu interface.

[0062] Step 503: The target base station initiates a UE context acquisition request to the source serving base station.

[0063] Step 5041: The source serving base station sends a UE context acquisition response to the target base station, in which the UE context acquisition response carries second related information of the Relay UE which provides relay service to the Remote UE.

[0064] Step 5042: The source serving base station sends terminal context acquisition failure information to the target base station.

[0065] Step 5051: The target base station sends an RRC re-establishment to the Remote UE.

[0066] In step 5051, the Remote UE sends an RRC re-establishment completion to the Target UE.

[0067] Step 5052: The target base station sends an RRC connection establishment to the Remote UE.

[0068] In step 5052, the Remote UE sends an RRC connection establishment completion to the target base station.

[0069] Step 5061: The target base station sends an RRC reconfiguration to a Relay UE serving the Remote UE, where the RRC reconfiguration carries a delta configuration.

[0070] In step 5061, the Relay UE sends an RRC reconfiguration completion to the target base station.

[0071] Step 5062: The target base station sends an RRC reconfiguration to a Relay UE serving the Remote UE, where the RRC reconfiguration carries a full configuration.

[0072] In step 5062, the Relay UE sends an RRC reconfiguration completion to the target base station.

[0073] It should be noted that the above steps 5041 and 5042 are parallel steps, the above steps 5051 and 5052 are parallel steps, the above steps 5061 and 5062 are parallel steps, and after the execution of the above step 5041 is completed, the above steps 5051 and 5061 are executed successively, and after the execution of the above step 5042 is completed, the above steps 5052 and 5062 are executed successively.

[0074] Furthermore, when the Remote UE is in an RRC Inactive state and the Relay UE is in an RRC Connected state, the second embodiment may basically be applied, and the description regarding the RRC re-establishment of the Remote UE may be replaced with RRC resume (connection recovery).

[0075] In the implementation of the present invention, the context configuration method of the Remote UE and / or Relay UE by the source serving base station enables the RRC connection of the Remote UE to be quickly restored even if the connection fails on either PC5 or Uu, and the reliability of relay communication is guaranteed.

[0076] It should be noted that the information transmission method provided in the embodiments of the present application may be executed by an information transmission device or a control module for executing the information transmission method in the information transmission device. In the embodiments of the present application, the information transmission device provided in the embodiments of the present application is taken as an example to execute the information transmission method.

[0077] As shown in FIG. 6, the embodiment of the present application is A first processing module 601 for setting terminal context information when at least one remote terminal establishes an RRC connection with a first network side device via a relay terminal; When the terminal context information is context information of a relay terminal, the terminal context information includes first related information of a remote terminal served by the relay terminal, and / or when the terminal context information is context information of a remote terminal, the terminal context information includes second related information of a relay terminal providing a relay service to the remote terminal.

[0078] Optionally, the device of the present application comprises: The remote terminal further includes a determining module for determining whether to establish an RRC connection with the first network side device via the relay terminal.

[0079] Optionally, the device of the present application comprises: A first receiving module for receiving a terminal context acquisition request transmitted from a second network side device, the terminal context acquisition request being transmitted by the second network side device after receiving first information transmitted from a first terminal; A first sending module for sending feedback information to the second network side device, When the feedback information is a terminal context acquisition response and the first terminal is a relay terminal, the terminal context acquisition response includes at least one of context information of the relay terminal and context information of the remote terminal; Or, when the feedback information is a terminal context acquisition response and the first terminal is a remote terminal, the terminal context acquisition response includes at least one of context information of the remote terminal and context information of the relay terminal.

[0080] Optionally, the first related information is: an identification of at least one remote terminal; and first setting information associated with each of the identification information; The first setting information is Mapping the first interface radio link control (RLC) channels to the second interface (RLC) channels; Mapping a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping a second interface RLC channel to a bearer of the remote terminal; Mapping a second interface RLC channel to a bearer of the relay terminal; A first interface RLC channel configuration; A second interface RLC channel configuration; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; The first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

[0081] Optionally, the second related information is: Identification information of at least one relay terminal; and second setting information associated with each of the identification information; The second setting information is Mapping the first interface RLC channels to the second interface RLC channels; Mapping a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping a second interface RLC channel to a bearer of the remote terminal; Mapping a second interface RLC channel to a bearer of the relay terminal; A first interface RLC channel configuration; A second interface RLC channel configuration; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; The first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

[0082] The information transmission device provided in the embodiment of the present application can realize each step implemented in the method embodiment of FIG. 2 and achieve the same technical effects, and detailed description will be omitted here to avoid duplication.

[0083] It should be noted that the information acquisition method provided in the embodiments of the present application may be executed by an information acquisition device or a control module for executing the information acquisition method in the information acquisition device. In the embodiments of the present application, the information acquisition device provided in the embodiments of the present application will be described by taking the information acquisition device executing the information acquisition method as an example.

[0084] As shown in FIG. 7, the embodiment of the present application is a second sending module 701 for sending a terminal context acquisition request to a first network side device, the terminal context acquisition request being sent by the second network side device after receiving first information sent from a first terminal, the first network side device setting at least one of context information of a relay terminal and context information of a remote terminal, the context information of the relay terminal including first related information of a remote terminal serviced by the relay terminal, and the context information of the remote terminal including second related information of a relay terminal providing a relay service to the remote terminal; A second receiving module 702 for receiving feedback information sent from the first network side device; When the feedback information is a terminal context acquisition response and the first terminal is a relay terminal, the terminal context acquisition response includes at least one of context information of the relay terminal and context information of the remote terminal; Alternatively, when the feedback information is a terminal context acquisition response and the first terminal is a remote terminal, the terminal context acquisition response includes at least one of context information of the remote terminal and context information of the relay terminal.

[0085] Optionally, the first related information is: an identification of at least one remote terminal; and first setting information associated with each of the identification information; The first setting information is Mapping the first interface radio link control (RLC) channels to the second interface (RLC) channels; Mapping a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping a second interface RLC channel to a bearer of the remote terminal; Mapping a second interface RLC channel to a bearer of the relay terminal; A first interface RLC channel configuration; A second interface RLC channel configuration; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; The first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

[0086] Optionally, the second related information is: Identification information of at least one relay terminal; and second setting information associated with each of the identification information; The second setting information is Mapping the first interface RLC channels to the second interface RLC channels; Mapping a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping a second interface RLC channel to a bearer of the remote terminal; Mapping a second interface RLC channel to a bearer of the relay terminal; A first interface RLC channel configuration; A second interface RLC channel configuration; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; The first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

[0087] Optionally, the device of the present application comprises: and a third sending module for sending a first RRC reconfiguration to a remote terminal served by the first terminal after the second network side device obtains feedback information sent from the first network side device when the first terminal is a relay terminal, the first RRC reconfiguration including an incremental configuration generated based on a context of the remote terminal.

[0088] Optionally, the device of the present application comprises: The present invention further includes a fourth sending module for sending a second RRC reconfiguration to a remote terminal served by the first terminal after the second network side device obtains the feedback information sent from the first network side device when the feedback information is terminal context acquisition failure information and the first terminal is a relay terminal, the second RRC reconfiguration including all settings.

[0089] Optionally, the device of the present application comprises: The fifth sending module is for sending a third RRC reconfiguration to a relay terminal serving the first terminal after the second network side device obtains feedback information sent from the first network side device when the first terminal is a remote terminal, where the third RRC reconfiguration includes an incremental configuration generated based on a context of the relay terminal.

[0090] Optionally, the device of the present application comprises: The sixth sending module is for sending a fourth RRC reconfiguration to a relay terminal providing services to the first terminal after the second network side device obtains the feedback information sent from the first network side device when the feedback information is terminal context acquisition failure information and the first terminal is a remote terminal, where the fourth RRC reconfiguration includes all settings.

[0091] The information acquisition device provided in the embodiment of the present application can realize each step implemented in the method embodiment of FIG. 3 and achieve the same technical effects, and detailed descriptions will be omitted here to avoid duplication.

[0092] Optionally, as shown in Fig. 8, the embodiment of the present application further provides a network side device 800, which includes a processor 801, a memory 802, and a program or command stored in the memory 802 and executable on the processor 801, for example, when the communication device 800 is a first network side device, the program or command is executed by the processor 801 to realize each step of the embodiment of the information transmission method, and the same technical effect can be achieved. When the communication device 800 is a second network side device, the program or command is executed by the processor 801 to realize each step of the embodiment of the information acquisition method, and the same technical effect can be achieved, and detailed description thereof will be omitted here to avoid duplication.

[0093] An embodiment of the present application further provides a network side device 900. As shown in Fig. 9, the network device 900 includes an antenna 901, a radio frequency device 902, and a baseband device 903. The antenna 901 is connected to the radio frequency device 902. In the uplink direction, the radio frequency device 902 receives information through the antenna 901, and transmits the received information to the baseband device 903 for processing. In the downlink direction, the baseband device 903 processes the information to be transmitted and transmits it to the radio frequency device 902, and the radio frequency device 902 processes the received information before transmitting it via the antenna 901.

[0094] The above-mentioned radio frequency device 902 may be in a baseband device 903, and the method performed in the first network side device or the second network side device in the above embodiments can be realized in the baseband device 903, which includes a processor 904 and a memory 905.

[0095] The baseband device 903 may include, for example, at least one baseband board having a plurality of chips installed thereon, and as shown in FIG. 9, one of the chips is, for example, a processor 904 connected to a memory 905 to call a program in the memory 905 and perform the operation of the first network side device or the second network side device shown in the embodiments of the above method.

[0096] The baseband device 903 may further include a network interface 906 for exchanging information with the radio frequency device 902, the interface being, for example, a common public radio interface (CPRI).

[0097] Specifically, the network side device of the embodiment of the present invention further includes a command or program stored in memory 905 and executable on processor 904, and processor 904 calls the command or program in memory 905 to execute the method performed by each module shown in Figure 6 or 7 to achieve the same technical effect, and detailed description is omitted here to avoid duplication.

[0098] An embodiment of the present application further provides a readable storage medium, in which a program or command is stored, and when the program or command is executed by a processor, each step of the embodiment of the information transmission method or information acquisition method described above is realized, and the same technical effect can be achieved, and in order to avoid duplication, detailed description will be omitted here.

[0099] Here, the processor is the processor in the network side device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, etc.

[0100] An embodiment of the present application further provides a chip, the chip comprising a processor and a communication interface coupled to the processor, the processor is for executing a program or command to realize each step of the embodiment of the above-mentioned information transmission method or information acquisition method, and can achieve the same technical effects, and in order to avoid duplication, detailed description will be omitted here.

[0101] It should be understood that the chips referred to in the embodiments of this application may be referred to as system level chips, system chips, chip systems, system on chips, or the like.

[0102] An embodiment of the present application further provides a computer program product, which is stored in a non-volatile storage medium, and when the computer program product is executed by at least one processor, each step of the embodiment of the above-mentioned information transmission method or information acquisition method is realized, and the same technical effects can be achieved, and detailed descriptions thereof will be omitted here to avoid duplication.

[0103] It should be noted that in this specification, the terms "comprise", "consist of" or any other variations are intended to include a non-exclusive inclusion, whereby a process, method, article, or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly stated or inherent to such process, method, article, or apparatus. Unless otherwise specified, an element limited by the phrase "comprises a" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. It should also be noted that the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions substantially simultaneously or in the reverse order depending on such functions, for example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Also, features described with reference to any example may be combined in other examples.

[0104] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform, and of course, they can be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solutions of the present application can be substantially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a number of commands that cause a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in the embodiments of the present application.

[0105] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can make without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

[0106] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to Chinese Patent Application No. 202110247331.5, filed in China on March 5, 2021, the entire contents of which are incorporated herein by reference.

Claims

1. When at least one remote terminal establishes an RRC connection with a first network side device via a relay terminal, the first network side device sets terminal context information; When the terminal context information is context information of a relay terminal, the terminal context information includes first related information of a remote terminal served by the relay terminal, or when the terminal context information is context information of a remote terminal, the terminal context information includes second related information of a relay terminal providing a relay service to the remote terminal.

2. A step of receiving a terminal context acquisition request transmitted by a first network side device from a second network side device, the terminal context acquisition request being transmitted by the second network side device after receiving first information transmitted from a first terminal; The first network side device further includes a step of transmitting feedback information to the second network side device; When the feedback information is a terminal context acquisition response and the first terminal is a relay terminal, the terminal context acquisition response includes at least one of context information of the relay terminal and context information of the remote terminal; Or, when the feedback information is a terminal context acquisition response and the first terminal is a remote terminal, the terminal context acquisition response includes at least one of context information of the remote terminal and context information of the relay terminal. The information transmission method of claim 1 .

3. The information transmission method according to claim 2 , wherein the first information is an RRC re-establishment request or an RRC connection recovery request.

4. The first related information is an identification of at least one remote terminal; and first setting information associated with each of the identification information, The first setting information is mapping first interface radio link control (RLC) channels to second interface (RLC) channels; a mapping of a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping second interface RLC channels to bearers of the remote terminal; Mapping second interface RLC channels to bearers of the relay terminal; a first interface RLC channel setup; a second interface RLC channel setup; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; 3. The information transmission method according to claim 1, wherein the first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

5. The second related information is Identification information of at least one relay terminal; and second setting information associated with each of the identification information, The second setting information is mapping the first interface RLC channels to the second interface RLC channels; a mapping of a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping second interface RLC channels to bearers of the remote terminal; Mapping second interface RLC channels to bearers of the relay terminal; a first interface RLC channel setup; a second interface RLC channel setup; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; 3. The information transmission method according to claim 1, wherein the first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

6. a step of a second network side device transmitting a terminal context acquisition request to a first network side device, the terminal context acquisition request being transmitted by the second network side device after the second network side device receives first information transmitted from a first terminal, the first network side device setting at least one of context information of a relay terminal and context information of a remote terminal, the context information of the relay terminal including first related information of a remote terminal provided with a service by the relay terminal, and the context information of the remote terminal including second related information of a relay terminal providing a relay service to the remote terminal; The second network side device acquires feedback information transmitted from the first network side device; When the feedback information is a terminal context acquisition response and the first terminal is a relay terminal, the terminal context acquisition response includes at least one of context information of the relay terminal and context information of the remote terminal; Or, when the feedback information is a terminal context acquisition response and the first terminal is a remote terminal, the terminal context acquisition response includes at least one of context information of the remote terminal and context information of the relay terminal.

7. The information acquisition method according to claim 6 , wherein the first information is an RRC re-establishment request or an RRC connection recovery request.

8. The first related information is an identification of at least one remote terminal; and first setting information associated with each of the identification information, The first setting information is mapping first interface radio link control (RLC) channels to second interface (RLC) channels; a mapping of a first interface RLC channel to a bearer of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping second interface RLC channels to bearers of the remote terminal; Mapping second interface RLC channels to bearers of the relay terminal; a first interface RLC channel setup; a second interface RLC channel setup; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; 7. The information acquisition method according to claim 6, wherein the first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

9. The second related information is Identification information of at least one relay terminal; and second setting information associated with each of the identification information, The second setting information is mapping the first interface RLC channels to the second interface RLC channels; Mapping of first interface RLC channels to bearers of the remote terminal; Mapping a first interface RLC channel to a bearer of the relay terminal; Mapping second interface RLC channels to bearers of the remote terminal; Mapping second interface RLC channels to bearers of the relay terminal; a first interface RLC channel setup; a second interface RLC channel setup; A bearer setup of the remote terminal; and a bearer setup of the relay terminal; 7. The information acquisition method according to claim 6, wherein the first interface is a connection interface between a relay terminal and a remote terminal, and the second interface is a connection interface between the relay terminal and a network side device.

10. When the first terminal is a relay terminal, after the second network side device acquires feedback information transmitted from the first network side device, 7. The information acquisition method according to claim 6, further comprising a step of: a second network side device sending a first RRC reconfiguration to a remote terminal served by the first terminal, the first RRC reconfiguration including an incremental configuration generated based on a context of the remote terminal.

11. When the feedback information is terminal context acquisition failure information and the first terminal is a relay terminal, after the second network side device acquires the feedback information transmitted from the first network side device, The information acquisition method according to claim 6, further comprising a step of: a second network side device sending a second RRC reconfiguration to a remote terminal served by the first terminal, the second RRC reconfiguration including all settings.

12. When the first terminal is a remote terminal, after the second network side device acquires feedback information transmitted from the first network side device, 7. The information acquisition method according to claim 6, further comprising a step of: a second network side device sending a third RRC reconfiguration to a relay terminal providing service to the first terminal, the third RRC reconfiguration including an incremental configuration generated based on a context of the relay terminal.

13. When the feedback information is terminal context acquisition failure information and the first terminal is a remote terminal, after the second network side device acquires the feedback information transmitted from the first network side device, The information acquisition method according to claim 6, further comprising a step of a second network side device sending a fourth RRC reconfiguration to a relay terminal providing a service to the first terminal, the fourth RRC reconfiguration including all settings.

14. A network side device comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, the program or command being executed by the processor to realize the steps of the information transmission method described in any one of claims 1 to 5.

15. A network side device comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, wherein when the program or command is executed by the processor, the steps of the information acquisition method described in any one of claims 6 to 13 are realized.

16. A readable storage medium having a program or command stored thereon, the program or command being executed by a processor to implement the steps of the information transmission method according to any one of claims 1 to 5.

17. A readable storage medium having a program or command stored therein, the program or command being executed by a processor to realize the steps of the information acquisition method according to any one of claims 6 to 13.

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