CN113965923A

CN113965923A - Information processing method, device, equipment and readable storage medium

Info

Publication number: CN113965923A
Application number: CN202010714356.7A
Authority: CN
Inventors: 赵亚利
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2022-01-21
Anticipated expiration: 2040-07-21
Also published as: CN113965923B; WO2022017407A1

Abstract

The invention discloses an information processing method, an information processing device, information processing equipment and a readable storage medium, and relates to the technical field of communication, so that the whole relay system can still work normally when the state of relay UE is changed. The method comprises the following steps: if the state of the relay UE is changed, sending first indication information to a remote UE, wherein the first indication information is used for indicating at least one of the following information to the remote UE: the current state of the relay UE, the operation to be executed by the remote UE. The embodiment of the invention can ensure that the whole relay system can still work normally when the state of the relay UE is changed.

Description

Information processing method, device, equipment and readable storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information processing method, an information processing apparatus, an information processing device, and a readable storage medium.

Background

To extend network coverage, one solution is to introduce relays. The relay may be a terminal having a relay function. For UE-to-Network Relay, the interface between the Relay UE and the Network uses a Uu interface, and the interface between the Relay UE (User Equipment) and the remote UE (remote UE) uses a direct communication interface. The remote UE may also be referred to as a relayed UE, and the remote UE may establish a connection with the network or other remote UEs through the relay UE. The link between the relay UE and the network may be referred to as a Backhaul link (BH) for the remote UE.

The RRC (Radio Resource Control) states of the UE in the LTE (Long Term Evolution) system are only two: RRC _ IDLE (RRC IDLE state) and RRC _ CONNECTED (RRC CONNECTED state). The RRC state of a 5G NR (New Radio, New air interface) UE has three types: RRC _ IDLE, RRC _ INACTIVE (RRC INACTIVE), and RRC _ CONNECTED. The purpose of introducing RRC _ INACTIVE is two: 1) when there is no data transmission requirement, returning to RRC _ INACTIVE can recover RRC connection faster than returning to RRC _ IDLE; 2) when the UE moves, RRC _ INACTIVE may reduce signaling overhead relative to the RRC _ CONNECTED state.

In the LTE system, if the UE operates as a relay, it is mandatory that the relay UE be in an RRC _ CONNECTED state. However, for the NR system, how to ensure that the entire relay system works normally when the state of the relay UE changes is a problem to be solved.

Disclosure of Invention

Embodiments of the present invention provide an information processing method, apparatus, device, and readable storage medium, so as to ensure that a whole relay system can still work normally when a state of a relay UE changes.

In a first aspect, an embodiment of the present invention provides an information processing method, applied to a relay user equipment UE, including:

if the state of the relay UE is changed, sending first indication information to a remote UE, wherein the first indication information is used for indicating at least one of the following information to the remote UE:

the current state of the relay UE, the operation to be executed by the remote UE.

Wherein the state change of the relay UE comprises at least one of the following conditions:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

Wherein, if the state change of the relay UE includes a change from RRC _ IDLE to RRC _ CONNECTED or a change from RRC _ INACTIVE to RRC _ CONNECTED, the first indication information is used to indicate at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ CONNECTED state;

and indicating the completion of the establishment or recovery of the relay link connection, wherein the relay link is a link between the relay UE and the network equipment.

Wherein, if the state change of the relay UE includes changing from RRC _ CONNECTED to RRC _ INACTIVE, the first indication information is used to indicate at least one of the following information to the remote UE:

the relay UE is used for requesting UE identification information used when the Uu interface RRC connection is recovered;

indicating that the current state of the relay UE is an RRC _ INACTIVE state;

indicating a relay link interruption, the relay link being a link between the relay UE and a network device;

the remote UE is used for requesting UE identification information used when the relay connection is recovered;

instructing the remote UE to perform relay UE reselection.

The UE identification information used by the remote UE for requesting the relay connection to recover is allocated to the remote UE when the network equipment notifies the relay UE to enter an RRC _ INACTIVE state.

Wherein if the state change of the relay UE includes changing from RRC _ CONNECTED to RRC _ INACTIVE, the method further comprises:

and receiving second indication information sent by the remote UE, wherein the second indication information is used for indicating that the remote UE has a relay requirement.

Wherein, the second indication information further includes UE identification information used by the remote UE to request the relay connection recovery.

Wherein the method further comprises:

and sending third indication information to network equipment through a first cell, wherein the third indication information is used for requesting to recover RRC connection of the relay UE at a Uu interface, and the first cell is a cell where the relay UE currently resides.

Wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

identification information of the remote UE in a second cell, where the second cell is a cell where the relay UE resides before entering an RRC _ INACTIVE state.

Wherein, if the state change of the relay UE includes changing from RRC _ CONNECTED to RRC _ IDLE or offline, or changing from RRC _ INACTIVE to RRC _ IDLE or offline, the first indication information is used to indicate at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ IDLE state or an offline state;

indicating a relay link interruption, wherein the relay link is a relay link between the relay UE and a network device;

instructing the remote UE to perform relay UE reselection.

In a second aspect, an embodiment of the present invention provides an information processing method, applied to a remote UE, including:

receiving first indication information sent by relay UE;

processing according to the first indication information;

wherein the first indication information is transmitted by the relay UE when the status of the relay UE is changed, and the first indication information is used for indicating at least one of the following information to the remote UE:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

Wherein, if the state change of the relay UE includes changing from RRC _ IDLE to RRC _ CONNECTED or changing from RRC _ INACTIVE to RRC _ CONNECTED, the processing according to the first indication information includes at least one of the following steps:

sending a direct communication interface (BSR) to the relay UE;

and sending data needing to be relayed to the relay UE.

Wherein, if the state change of the relay UE includes changing from RRC _ CONNECTED to RRC _ INACTIVE, the processing according to the first indication information includes:

and sending second indication information to the relay UE, wherein the second indication information is used for indicating that the remote UE has relay requirements.

Wherein, if the state change of the relay UE includes changing from RRC _ CONNECTED to RRC _ IDLE or offline, or changing from RRC _ INACTIVE to RRC _ IDLE or offline, or changing from RRC _ CONNECTED to RRC _ INACTIVE, the processing according to the first indication information includes:

and reselecting the relay UE according to the first indication information.

In a third aspect, an embodiment of the present invention provides an information processing method, which is applied to a network device in a first cell, and includes:

receiving third indication information sent by relay UE, wherein the third indication information is used for requesting to recover RRC connection of the relay UE on a Uu interface, and the first cell is a cell where the relay UE currently resides;

sending fourth indication information to network equipment of a second cell through an interface between base stations or between cells, wherein the fourth indication information is used for requesting UE context of the relay UE or UE context of the relay UE and remote UE served by the relay UE; the second cell is a cell in which the relay UE resides before entering an RRC _ INACTIVE state;

the third indication information is sent when the state of the relay UE needs to be changed, and the state of the relay UE needs to be changed from RRC _ CONNECTED to RRC _ INACTIVE.

Wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

Wherein the fourth indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

In a fourth aspect, an embodiment of the present invention provides an information processing method, which is applied to a network device in a second cell, and includes:

receiving fourth indication information sent by network equipment of a first cell, wherein the fourth indication information is used for requesting UE context of relay UE (user equipment), or the relay UE and the UE context of remote UE served by the relay UE;

according to the fourth indication information, sending the UE context of the relay UE or the relay UE and the remote UE served by the relay UE to the network equipment of the first cell;

the fourth indication information is sent by the network device of the first cell according to third indication information of the relay UE, where the third indication information is sent when the state of the relay UE needs to be changed, and the state of the relay UE needs to be changed from RRC _ CONNECTED to RRC _ INACTIVE.

Wherein the fourth indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

Wherein the method further comprises:

and if the identification information of the target remote end UE stored in the second cell is not included in the fourth indication information, deleting the context of the target remote end UE, wherein the target remote end UE comprises the remote end UE which is stored in the second cell and has an association relationship with the relay UE.

In a fifth aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a relay UE, and includes:

a first sending module, configured to send first indication information to a remote UE if a state of a relay UE is changed, where the first indication information is used to indicate at least one of the following information to the remote UE:

In a sixth aspect, an embodiment of the present invention provides an information processing apparatus, applied to a remote UE, including:

the first receiving module is used for receiving first indication information sent by the relay UE;

the first processing module is used for processing according to the first indication information;

In a seventh aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a network device in a first cell, and includes:

a first receiving module, configured to receive third indication information sent by a relay UE, where the third indication information is used to request recovery of RRC connection of the relay UE at a Uu interface, and the first cell is a cell where the relay UE currently resides;

a first sending module, configured to send fourth indication information to a network device of a second cell through an inter-base station or inter-cell interface, where the fourth indication information is used to request a UE context of the relay UE, or the relay UE and a UE context of a remote UE served by the relay UE; the second cell is a cell in which the relay UE resides before entering an RRC _ INACTIVE state;

In an eighth aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a network device in a second cell, and includes:

a first receiving module, configured to receive fourth indication information sent by a network device of a first cell, where the fourth indication information is used to request a UE context of a relay UE, or the relay UE and a UE context of a remote UE served by the relay UE;

a first sending module, configured to send, according to the fourth indication information, a UE context of a relay UE or a remote UE served by the relay UE and the relay UE to a network device of the first cell;

In a ninth aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a relay UE, and includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

indicating that the current state of the relay UE is an RRC _ CONNECTED state;

indicating that the current state of the relay UE is an RRC _ INACTIVE state;

instructing the remote UE to perform relay UE reselection.

Wherein, if the state change of the relay UE includes changing from RRC _ CONNECTED to RRC _ INACTIVE, the processor is further configured to read a program in the memory and perform the following procedure:

Wherein the processor is further configured to read the program in the memory and execute the following processes:

Wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

instructing the remote UE to perform relay UE reselection.

In a tenth aspect, an embodiment of the present invention provides an information processing apparatus, applied to a remote UE, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

receiving first indication information sent by relay UE;

processing according to the first indication information;

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

Wherein, if the change of the state of the relay UE includes a change from RRC _ IDLE to RRC _ CONNECTED or a change from RRC _ INACTIVE to RRC _ CONNECTED, the processor is further configured to read a program in the memory and perform at least one of the following procedures:

sending a direct communication interface BSR to the relay UE;

and sending data needing to be relayed to the relay UE.

Wherein, if the state change of the relay UE includes changing from RRC _ CONNECTED to RRC _ IDLE or offline, or changing from RRC _ INACTIVE to RRC _ IDLE or offline, or changing from RRC _ CONNECTED to RRC _ INACTIVE, the processor is further configured to read the program in the memory and execute the following procedures:

and reselecting the relay UE according to the first indication information.

In an eleventh aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a network device of a first cell, and includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

Wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

identification information of the remote UE in a second cell, wherein the second cell is a cell in which the relay UE resides before entering an RRC _ INACTIVE state;

the fourth indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

In a twelfth aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a network device in a second cell, and includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

Wherein the fourth indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing a program, where the program is executed by a processor to implement the steps in the information processing method according to any one of the foregoing aspects.

In the embodiment of the invention, when the state of the relay UE is changed, first indication information is sent to the remote UE so as to indicate at least one of the current state of the relay UE and the operation required to be executed by the remote UE to the remote UE. Therefore, by using the scheme of the embodiment of the invention, the whole relay system can still work normally when the state of the relay UE is changed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a flow chart of an information processing method provided by an embodiment of the invention;

FIG. 2 is a second flowchart of an information processing method according to an embodiment of the present invention;

FIG. 3 is a third flowchart of an information processing method according to an embodiment of the present invention;

FIG. 4 is a fourth flowchart of an information processing method according to an embodiment of the present invention;

FIG. 5 is a fifth flowchart of an information processing method according to an embodiment of the present invention;

FIG. 6 is a sixth flowchart of an information processing method according to an embodiment of the present invention;

FIG. 7 is a seventh flowchart of an information processing method according to an embodiment of the present invention;

fig. 8 is an eighth flowchart of an information processing method according to an embodiment of the present invention;

FIG. 9 is a ninth flowchart of an information processing method according to an embodiment of the present invention;

FIG. 10 is one of the structural diagrams of an information processing apparatus provided by the embodiment of the present invention;

FIG. 11 is a second block diagram of an information processing apparatus according to an embodiment of the present invention;

FIG. 12 is a third block diagram of an information processing apparatus according to an embodiment of the present invention;

FIG. 13 is a fourth block diagram of an information processing apparatus according to an embodiment of the present invention;

fig. 14 is one of the structural diagrams of an information processing apparatus provided by the embodiment of the present invention;

fig. 15 is a second block diagram of an information processing apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a flowchart of an information processing method provided in an embodiment of the present invention, and is applied to a relay UE, as shown in fig. 1, including the following steps:

step 101, if the state of the relay UE is changed, sending first indication information to a remote UE, where the first indication information is used to indicate at least one of the following information to the remote UE:

The state of the relay UE may include an RRC state of the relay, and the like. The current state of the relay UE may be understood as the state of the RRC after the state of the relay UE is changed, and the operation to be performed by the remote UE may include, for example, performing a reselection of the relay UE.

(1) change from RRC _ IDLE to RRC _ CONNECTED;

(2) change from RRC _ INACTIVE to RRC _ CONNECTED;

(3) change from RRC _ CONNECTED to RRC _ INACTIVE;

(4) change from RRC _ CONNECTED to RRC _ IDLE or offline;

(5) change from RRC _ INACTIVE to RRC _ IDLE or offline.

For the above (1) or (2), the first indication information is used to indicate, to the far-end UE, at least one of the following information:

A. indicating that the current state of the relay UE is an RRC _ CONNECTED state;

B. and indicating the completion of the establishment or recovery of the relay link connection, wherein the relay link is a link between the relay UE and the network equipment.

For the above (3), the first indication information is used to indicate at least one of the following information to the remote UE:

A. the relay UE is used for requesting UE identification information used when the Uu interface RRC connection is recovered;

B. indicating that the current state of the relay UE is an RRC _ INACTIVE state;

C. indicating a relay link interruption, the relay link being a link between the relay UE and a network device;

D. the remote UE is used for requesting UE identification information used when the relay connection is recovered;

E. instructing the remote UE to perform relay UE reselection.

For (3) above, once the remote relay UE has a data transmission requirement on the relay link, the method may further include: and receiving second indication information sent by the remote UE, wherein the second indication information is used for indicating that the remote UE has a relay requirement. Wherein, the second indication information further includes UE identification information used by the remote UE to request the relay connection recovery.

In this case, the method may further include: and sending third indication information to network equipment through a first cell, wherein the third indication information is used for requesting to recover RRC connection of the relay UE at a Uu interface, and the first cell is a cell where the relay UE currently resides.

Wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

For the above (4) or (5), the first indication information is used to indicate, to the far-end UE, at least one of the following information:

A. indicating that the current state of the relay UE is an RRC _ IDLE state;

B. indicating a relay link interruption, wherein the relay link is a relay link between the relay UE and a network device;

C. instructing the remote UE to perform relay UE reselection.

Referring to fig. 2, fig. 2 is a flowchart of an information processing method provided in an embodiment of the present invention, which is applied to a remote UE, and as shown in fig. 2, the method includes the following steps:

step 201, receiving first indication information sent by the relay UE.

Wherein the first indication information is transmitted by the relay UE when the status of the relay UE is changed, and the first indication information is used for indicating at least one of the following information to the remote UE: the current state of the relay UE, the operation to be executed by the remote UE.

In this embodiment of the present invention, the state change of the relay UE includes at least one of the following situations:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

Step 202, processing is carried out according to the first indication information;

if the state change of the relay UE includes a change from RRC _ IDLE to RRC _ CONNECTED or a change from RRC _ INACTIVE to RRC _ CONNECTED, this step may include at least one of the following steps:

sending a direct communication interface BSR to the relay UE;

and sending data needing to be relayed to the relay UE.

If the state change of the relay UE includes a change from RRC _ CONNECTED to RRC _ INACTIVE, this step may include:

If the state change of the relay UE includes changing from RRC _ CONNECTED to RRC _ IDLE or offline, or changing from RRC _ INACTIVE to RRC _ IDLE or offline, or changing from RRC _ CONNECTED to RRC _ INACTIVE, this step may include:

and reselecting the relay UE according to the first indication information.

Referring to fig. 3, fig. 3 is a flowchart of an information processing method according to an embodiment of the present invention, which is applied to a network device of a first cell, and as shown in fig. 3, the method includes the following steps:

step 301, receiving third indication information sent by the relay UE, where the third indication information is used to request to recover RRC connection of the relay UE on a Uu interface, and the first cell is a cell where the relay UE currently resides.

Wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

Step 302, sending fourth indication information to the network device of the second cell through an inter-base station or inter-cell interface, where the fourth indication information is used to request the UE context of the relay UE, or the relay UE and the UE context of the remote UE served by the relay UE. The second cell is a cell where the relay UE resides before entering an RRC _ INACTIVE state.

Wherein the fourth indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

Referring to fig. 4, fig. 4 is a flowchart of an information processing method provided by an embodiment of the present invention, which is applied to a network device of a second cell, and as shown in fig. 4, includes the following steps:

step 401, receiving fourth indication information sent by a network device of a first cell, where the fourth indication information is used to request a UE context of a relay UE, or the relay UE and a UE context of a remote UE served by the relay UE.

Step 402, according to the fourth indication information, sending the UE context of the relay UE or the relay UE and the remote UE served by the relay UE to the network device of the first cell.

Wherein the fourth indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

On the basis of the above embodiment, the method may further include:

Referring to fig. 5, fig. 5 is a flowchart of an information processing method according to an embodiment of the present invention. In the embodiment shown in fig. 5, the relay UE is changed from RRC _ IDLE or RRC _ INACTIVE to RRC _ CONNECTED. As shown in fig. 5, the method comprises the following steps:

step 501, establishing RRC connection/recovery between the relay UE and the network equipment.

At this time, the relay UE changes from the RRC _ IDLE or RRC _ INACTIVE state to the RRC _ CONNECTED state.

Step 502, the relay UE sends the first indication information to the remote UE.

The first indication information is used for indicating at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ CONNECTED state;

Step 503, the remote UE sends data through the direct communication interface.

After receiving the first indication information, the remote UE may send a direct communication interface BSR and/or data to be relayed to the relay UE.

Referring to fig. 6, fig. 6 is a flowchart of an information processing method according to an embodiment of the present invention. In the embodiment shown in fig. 6, the relay UE is changed from RRC _ CONNECTED to RRC _ INACTIVE. The RRC connection recovery message carries UE identification information used by the relay UE for requesting the recovery of the RRC connection of the Uu interface. Suppose that the cell in which the relay UE currently resides is the first cell, and the serving cell before the relay UE enters RRC _ INACTIVE is the second cell. As shown in fig. 6, the method comprises the following steps:

step 601, the second cell notifies the relay UE to enter an RRC _ INACTIVE state.

Specifically, in this step, the second cell notifies the relay UE to enter RRC _ INACTIVE through an RRC message. The RRC message may be RRC release with suspendeconfig. Of course, other RRC messages may be implemented.

The RRC message at least comprises UE identification information used by the relay UE for requesting the recovery of the Uu interface RRC connection.

Step 602, the relay UE sends the first indication information to the remote UE.

indicating that the current state of the relay UE is an RRC _ INACTIVE state;

instructing the remote UE to perform relay UE reselection.

Step 603, a response message of the first indication message.

The response message is an optional message. If the first indication message requires a response, step 603 needs to be performed. Otherwise, step 603 may be skipped.

Step 604, the remote UE sends a second indication message to the relay UE.

And the second indication information is sent by the remote UE and is used for indicating that the remote UE has a relay requirement.

Step 605, the relay UE sends the third indication information to the first cell.

And the relay UE sends third indication information to the network equipment of the first cell. The third indication information is used for requesting to recover the RRC connection of the relay UE on the Uu interface.

The third indication information at least includes UE identification information used by the relay UE to request the Uu interface RRC connection recovery. Optionally, the relay UE may also serve as identification information of the relay UE.

Step 606, the first cell requests the second cell for the UE context of the relay UE or the relay UE and the remote UE served by the relay UE, and the second cell sends the UE context of the relay UE or the relay UE and the remote UE served by the relay UE to the first cell.

The serving base station of the first cell needs to send the fourth indication information to the serving base station of the second cell (e.g., send the fourth indication information via a RETRIEVE UE CONTEXT REQUEST message). The fourth indication information is used for requesting to acquire the UE context of the relay UE or the relay UE and the remote UE. The fourth indication information at least includes: the relay UE is used for requesting UE identification information used when the Uu interface RRC connection is recovered. Optionally, the relay UE may also serve as identification information of the relay UE.

And if the second cell receives the fourth indication information, sending the UE CONTEXT (CONTEXT) of the relay UE or the relay UE and the remote UE to the first cell through an inter-base station interface, for example, the second cell may send the relay UE or the UE CONTEXT (CONTEXT) of the relay UE and the remote UE to the first cell through the inter-base station interface using a RETRIEVE UE CONTEXT RESPONSE message.

Step 607-608, the relay UE completes the RRC connection recovery in the first cell.

And the first cell sends an RRC connection recovery response to the relay UE, and the relay UE sends an RRC connection establishment message to the first cell.

Once the relay UE completes RRC connection recovery, the subsequent operations may refer to steps 502 and 503 shown in fig. 5.

Referring to fig. 7, fig. 7 is a flowchart of an information processing method according to an embodiment of the present invention. In the embodiment shown in fig. 7, the relay UE is changed from RRC _ CONNECTED to RRC _ INACTIVE. The RRC connection recovery message carries UE identification information used by the relay UE for requesting the recovery of the RRC connection of the Uu interface and UE identification information used by the remote UE for requesting the recovery of the relay connection. Suppose that the cell in which the relay UE currently resides is the first cell, and the serving cell before the relay UE enters RRC _ INACTIVE is the second cell. As shown in fig. 7, the method comprises the following steps:

step 701, the second cell notifies the relay UE to enter RRC _ INACTIVE.

The RRC message at least comprises UE identification information used by the relay UE for requesting the recovery of the Uu interface RRC connection. Optionally, the UE identifier information used by the remote UE to request the relay connection recovery may also be carried.

Step 702, the relay UE sends the first indication information to the remote UE.

The first indication information content may include at least one of:

indicating that the current state of the relay UE is an RRC _ INACTIVE state;

instructing the remote UE to perform relay UE reselection.

Step 703, response message of the first indication message.

The response message is an optional message. If the first indication message requires a response, step 703 needs to be performed. Otherwise, step 703 may be skipped.

Step 704, the remote UE sends a second indication message to the relay UE.

And the second indication information is sent by the remote UE and is used for indicating that the remote UE has a relay requirement. Optionally, the second indication information may also carry UE identification information used by the remote UE when requesting the relay connection recovery or identification information of the remote UE in the second cell.

Step 705, the relay UE sends the third indication information to the first cell.

And the relay UE indicates information to the network through the current resident cell. The third indication information is used for requesting to recover RRC connection.

The third indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

Step 706, the first cell requests the second cell for the UE context of the relay UE or the relay UE and the remote UE served by the relay UE, and the second cell sends the UE context of the relay UE or the relay UE and the remote UE served by the relay UE to the first cell.

The serving base station of the first cell needs to send the fourth indication information to the serving base station of the second cell through the inter-base station interface (for example, the fourth indication information is sent through a RETRIEVE UE CONTEXT REQUEST message). The fourth indication information is used for requesting to acquire the context of the relay UE or the relay UE and the remote UE.

The fourth indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

The reason why the identification information of the remote UE is carried is mainly because the relay UE enters the RRC _ INACTIVE state until the time of recovering, some remote UEs may not be served by the relay UE any more, and it is not necessary for these UEs to acquire their UE context any more.

That is, the second cell receives the fourth indication information, and then sends the UE CONTEXT of the relay UE and the remote UE to the first cell (for example, through a RETRIEVE UE CONTEXT RESPONSE message). The second cell may delete the UE context of the remote UE that was originally served by the relay UE but not included in the fourth indication information of the relay UE.

Step 707-.

Referring to fig. 8, fig. 8 is a flowchart of an information processing method according to an embodiment of the present invention. In the embodiment shown in fig. 8, the relay UE is changed from RRC _ CONNECTED or RRC _ INACTIVE to RRC _ IDLE. As shown in fig. 8, the method comprises the following steps:

step 801, performing RRC connection release between the relay UE and the network device.

At this time, the relay UE changes from the RRC _ CONNECTED or RRC _ INACTIVE state to the RRC _ IDLE state.

Step 802, the relay UE sends first indication information to the remote UE.

The first indication information content may include at least one of:

indicating that the current state of the relay UE is an RRC _ IDLE state;

instructing the remote UE to perform relay UE reselection.

And after receiving the first indication information, the remote UE can execute the reselection of the relay UE.

Referring to fig. 9, fig. 9 is a flowchart of an information processing method according to an embodiment of the present invention. In the embodiment shown in fig. 9, the relay UE is changed from RRC _ CONNECTED or RRC _ INACTIVE to offline. As shown in fig. 9, the method comprises the following steps:

step 901, the RRC connection between the relay UE and the network device is interrupted, and the relay UE becomes in the off-line state.

There are many reasons for the RRC connection interruption, such as the relay UE entering a blind area of network coverage.

Step 902, the relay UE sends the first indication information to the remote UE.

The first indication information content may include at least one of:

indicating that the current state of the relay UE is an offline state;

instructing the remote UE to perform relay UE reselection.

As can be seen from the above description, the method for managing the RRC state of the relay terminal in the relay scenario provided in the embodiment of the present invention can ensure that the entire relay system can still work normally when the relay UE changes the state.

The embodiment of the invention also provides an information processing device which is applied to the relay UE. Referring to fig. 10, fig. 10 is a block diagram of an information processing apparatus according to an embodiment of the present invention. Because the principle of solving the problem of the information processing device is similar to the information processing method in the embodiment of the invention, the implementation of the information processing device can refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 10, the information processing apparatus 1000 includes: a first sending module 1001, configured to send, to a remote UE, first indication information if a status of a relay UE is changed, where the first indication information is used to indicate, to the remote UE, at least one of the following information: the current state of the relay UE, the operation to be executed by the remote UE.

Optionally, in this embodiment of the present invention, the state change of the relay UE includes at least one of the following situations:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

Optionally, if the change of the state of the relay UE includes a change from RRC _ IDLE to RRC _ CONNECTED, or a change from RRC _ INACTIVE to RRC _ CONNECTED, the first indication information is used to indicate at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ CONNECTED state;

Optionally, if the state change of the relay UE includes a change from RRC _ CONNECTED to RRC _ INACTIVE, the first indication information is used to indicate at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ INACTIVE state;

instructing the remote UE to perform relay UE reselection.

Optionally, the UE identity information used by the remote UE to request the relay connection to resume is allocated to the remote UE when the network device notifies the relay UE to enter the RRC _ INACTIVE state.

Optionally, the apparatus may further include:

a first receiving module, configured to receive second indication information sent by the remote UE if the status change of the relay UE includes a change from RRC _ CONNECTED to RRC _ INACTIVE, where the second indication information is used to indicate that the remote UE has a relay requirement.

Optionally, the second indication information further includes UE identification information used by the remote UE to request the relay connection recovery.

Optionally, the apparatus may further include: a second sending module, configured to send third indication information to a network device through a first cell, where the third indication information is used to request to recover RRC connection of the relay UE on a Uu interface, and the first cell is a cell where the relay UE currently resides.

Optionally, the third indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

Optionally, if the change of the state of the relay UE includes a change from RRC _ CONNECTED to RRC _ IDLE or offline, or a change from RRC _ INACTIVE to RRC _ IDLE or offline, the first indication information is used to indicate at least one of the following information to the remote UE:

instructing the remote UE to perform relay UE reselection.

The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

The embodiment of the invention also provides an information processing device which is applied to the remote UE. Referring to fig. 11, fig. 11 is a structural diagram of an information processing apparatus according to an embodiment of the present invention. Because the principle of solving the problem of the information processing device is similar to the information processing method in the embodiment of the invention, the implementation of the information processing device can refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 11, the information processing apparatus 1100 includes:

a first receiving module 1101, configured to receive first indication information sent by a relay UE; a first processing module 1102, configured to perform processing according to the first indication information; wherein the first indication information is transmitted by the relay UE when the status of the relay UE is changed, and the first indication information is used for indicating at least one of the following information to the remote UE: the current state of the relay UE, the operation to be executed by the remote UE.

Optionally, the state change of the relay UE includes at least one of the following situations:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

Optionally, if the change of the state of the relay UE includes a change from RRC _ IDLE to RRC _ CONNECTED, or a change from RRC _ INACTIVE to RRC _ CONNECTED, the first processing module is configured to perform at least one of the following:

sending a Buffer Status Report (BSR) of a direct communication interface to the relay UE;

and sending data needing to be relayed to the relay UE.

Optionally, if the change of the status of the relay UE includes changing from RRC _ CONNECTED to RRC _ INACTIVE, the first processing module is configured to send second indication information to the relay UE, where the second indication information is used to indicate that the remote UE has a relay requirement.

Optionally, if the change of the state of the relay UE includes changing from RRC _ CONNECTED to RRC _ IDLE or offline, or changing from RRC _ INACTIVE to RRC _ IDLE or offline, or changing from RRC _ CONNECTED to RRC _ INACTIVE, the first processing module is configured to perform reselection of the relay UE according to the first indication information.

The embodiment of the invention also provides an information processing device which is applied to the network equipment of the first cell. Referring to fig. 12, fig. 12 is a block diagram of an information processing apparatus according to an embodiment of the present invention. Because the principle of solving the problem of the information processing device is similar to the information processing method in the embodiment of the invention, the implementation of the information processing device can refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 12, the information processing apparatus 1200 includes:

a first receiving module 1201, configured to receive third indication information sent by a relay UE, where the third indication information is used to request recovery of RRC connection of the relay UE on a Uu interface, and the first cell is a cell where the relay UE currently resides; a first sending module 1202, configured to send fourth indication information to a network device of a second cell through an inter-base station or inter-cell interface, where the fourth indication information is used to request a UE context of the relay UE, or the relay UE and a UE context of a remote UE served by the relay UE; the third indication information is sent when the state of the relay UE needs to be changed, and the state of the relay UE needs to be changed from RRC _ CONNECTED to RRC _ INACTIVE.

Optionally, the third indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

Optionally, the fourth indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

The embodiment of the invention also provides an information processing device which is applied to the network equipment of the second cell. Referring to fig. 13, fig. 13 is a block diagram of an information processing apparatus according to an embodiment of the present invention. Because the principle of solving the problem of the information processing device is similar to the information processing method in the embodiment of the invention, the implementation of the information processing device can refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 13, the information processing apparatus 1300 includes:

a first receiving module 1301, configured to receive fourth indication information sent by a network device of a first cell, where the fourth indication information is used to request a UE context of a relay UE, or UE contexts of the relay UE and a remote UE served by the relay UE; a first sending module 1302, configured to send, according to the fourth indication information, a UE context of a relay UE or the relay UE and a remote UE served by the relay UE to a network device of the first cell; the fourth indication information is sent by the network device of the first cell according to third indication information of the relay UE, where the third indication information is sent when the state of the relay UE needs to be changed, and the state of the relay UE needs to be changed from RRC _ CONNECTED to RRC _ INACTIVE.

Optionally, the fourth indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

Optionally, the apparatus may further include: a first processing module, configured to delete the context of the target remote UE if the identifier information of the target remote UE stored in the second cell is not included in the fourth indication information, where the target remote UE includes the remote UE that is stored in the second cell and has an association with the relay UE.

As shown in fig. 14, an information processing apparatus of an embodiment of the present invention includes: the processor 1400 is used for reading the program in the memory 1420 and executing the following processes:

sending fourth indication information to network equipment of a second cell through an interface between base stations or between cells, wherein the fourth indication information is used for requesting UE context of the relay UE or UE context of the relay UE and remote UE served by the relay UE; the second cell is a cell where the relay UE resides before entering an RRC _ INACTIVE state.

The third indication information is sent when the state of the relay UE needs to be changed, and the state of the relay UE needs to be changed from RRC _ CONNECTED to RRC _ INACTIVE. A transceiver 1410 for receiving and transmitting data under the control of the processor 1400.

Where in fig. 14 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors, represented by the processor 1400, and various circuits of memory, represented by the memory 1420, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1410 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

The third indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

the fourth indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

The apparatus as described in fig. 14 is applicable to a network apparatus of a first cell.

Referring again to fig. 14, the apparatus shown in fig. 14 is also applicable to a network apparatus of a second cell. At this time, the processor 1400, which is used to read the program in the memory 1420, performs the following processes:

The fourth indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

The processor 1400 is further configured to read a program in the memory, and perform the following processes:

The device provided by the embodiment of the present invention may implement the above method embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

As shown in fig. 15, the information processing apparatus of the embodiment of the present invention includes: the processor 1500, which is used to read the program in the memory 1520, executes the following processes:

A transceiver 1510 for receiving and transmitting data under the control of the processor 1500.

In fig. 15, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1500 and various circuits of memory represented by memory 1520 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1510 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1530 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1500 in performing operations.

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

indicating that the current state of the relay UE is an RRC _ CONNECTED state;

indicating that the current state of the relay UE is an RRC _ INACTIVE state;

instructing the remote UE to perform relay UE reselection.

Optionally, if the change of the state of the relay UE includes changing from RRC _ CONNECTED to RRC _ INACTIVE, the processor 1500 is further configured to read the program, and perform the following steps:

The processor 1500 is further configured to read the program and execute the following steps: and sending third indication information to network equipment through a first cell, wherein the third indication information is used for requesting to recover RRC connection of the relay UE at a Uu interface, and the first cell is a cell where the relay UE currently resides.

Wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

instructing the remote UE to perform relay UE reselection.

Among them, the apparatus shown in fig. 15 is applicable to a relay UE.

Referring again to fig. 15, the apparatus shown in fig. 15 may be applied to a remote UE. The processor 1500 is further configured to read the program and execute the following steps:

receiving first indication information sent by relay UE;

processing according to the first indication information;

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

If the change of the state of the relay UE includes changing from RRC _ IDLE to RRC _ CONNECTED or changing from RRC _ INACTIVE to RRC _ CONNECTED, the processor 1500 is further configured to read the procedure, and perform the following steps:

and sending data needing to be relayed to the relay UE.

If the change of the state of the relay UE includes changing from RRC _ CONNECTED to RRC _ INACTIVE, the processor 1500 is further configured to read the procedure, and perform the following steps:

The second indication information further includes UE identification information used by the remote UE to request relay connection recovery.

If the change of the state of the relay UE includes changing from RRC _ CONNECTED to RRC _ IDLE or offline, or changing from RRC _ INACTIVE to RRC _ IDLE or offline, or changing from RRC _ CONNECTED to RRC _ INACTIVE, the processor 1500 is further configured to read the program, and perform the following steps: and reselecting the relay UE according to the first indication information.

The embodiment of the present invention further provides a readable storage medium, where a program is stored on the readable storage medium, and when the program is executed by a processor, the program implements each process of the above-mentioned information processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. With such an understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An information processing method applied to a relay User Equipment (UE), the method comprising:

2. The method of claim 1, wherein the change of the status of the relay UE comprises at least one of:

changing from an RRC IDLE state RRC _ IDLE to an RRC CONNECTED state RRC _ CONNECTED;

changing from an RRC INACTIVE state RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

3. The method of claim 2, wherein if the change of the state of the relay UE includes a change from RRC _ IDLE to RRC _ CONNECTED or a change from RRC _ INACTIVE to RRC _ CONNECTED, the first indication information is used to indicate at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ CONNECTED state;

4. The method of claim 2, wherein if the change of the status of the relay UE includes a change from RRC _ CONNECTED to RRC _ INACTIVE, the first indication information is used to indicate at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ INACTIVE state;

instructing the remote UE to perform relay UE reselection.

5. The method of claim 4, wherein the UE identity information used by the remote UE to request the relay connection recovery is allocated for the remote UE when the network device notifies the relay UE to enter RRC _ INACTIVE state.

6. The method of claim 2, wherein if the change in the status of the relay UE comprises a change from RRC _ CONNECTED to RRC _ INACTIVE, the method further comprises:

7. The method according to claim 6, wherein the second indication information further includes UE identity information used by the remote UE for requesting relay connection recovery.

8. The method according to claim 6 or 7, characterized in that the method further comprises:

9. The method of claim 8, wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

10. The method of claim 2, wherein if the change of the state of the relay UE includes a change from RRC _ CONNECTED to RRC _ IDLE or offline, or a change from RRC _ INACTIVE to RRC _ IDLE or offline, the first indication information is used to indicate at least one of the following information to the remote UE:

instructing the remote UE to perform relay UE reselection.

11. An information processing method applied to a remote UE, comprising:

receiving first indication information sent by relay UE;

processing according to the first indication information;

12. The method of claim 11, wherein the change of the status of the relay UE comprises at least one of:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

13. The method of claim 12, wherein if the change of the state of the relay UE includes a change from RRC _ IDLE to RRC _ CONNECTED or a change from RRC _ INACTIVE to RRC _ CONNECTED, the processing according to the first indication information comprises at least one of:

and sending data needing to be relayed to the relay UE.

14. The method of claim 12, wherein if the change of the status of the relay UE includes a change from RRC _ CONNECTED to RRC _ INACTIVE, the processing according to the first indication information comprises:

15. The method according to claim 14, wherein the second indication information further includes UE identity information used by the remote UE to request relay connection recovery.

16. The method of claim 12, wherein if the change of the status of the relay UE includes changing from RRC _ CONNECTED to RRC _ IDLE or out-of-network, or changing from RRC _ INACTIVE to RRC _ IDLE or out-of-network, or changing from RRC _ CONNECTED to RRC _ INACTIVE, the processing according to the first indication information comprises:

and reselecting the relay UE according to the first indication information.

17. An information processing method applied to a network device of a first cell, the method comprising:

18. The method of claim 17, wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

19. The method of claim 17, wherein the fourth indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

20. An information processing method applied to a network device of a second cell, the method comprising:

21. The method of claim 20, wherein the fourth indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

22. The method of claim 20, further comprising:

23. An information processing apparatus applied to a relay UE, comprising:

24. An information processing apparatus applied to a remote UE, comprising:

25. An information processing apparatus applied to a network device of a first cell, comprising:

26. An information processing apparatus applied to a network device of a second cell, comprising:

27. An information processing device applied to a relay UE, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

28. The apparatus of claim 27, wherein the change of the status of the relay UE comprises at least one of:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

29. The apparatus of claim 28, wherein if the change of the state of the relay UE includes a change from RRC _ IDLE to RRC _ CONNECTED or a change from RRC _ INACTIVE to RRC _ CONNECTED, the first indication information is used to indicate at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ CONNECTED state;

30. The apparatus of claim 28, wherein if the change of the status of the relay UE includes a change from RRC _ CONNECTED to RRC _ INACTIVE, the first indication information is used to indicate at least one of the following information to the remote UE:

indicating that the current state of the relay UE is an RRC _ INACTIVE state;

instructing the remote UE to perform relay UE reselection.

31. The apparatus of claim 30, wherein the UE identity information used by the remote UE to request the relay connection recovery is allocated for the remote UE when the network device notifies the relay UE to enter an RRC _ INACTIVE state.

32. The apparatus of claim 28, wherein if the change in the state of the relay UE comprises a change from RRC _ CONNECTED to RRC _ INACTIVE, the processor is further configured to read a program in the memory to perform the following procedure:

33. The apparatus of claim 32, wherein the second indication information further comprises UE identity information used by the remote UE to request relay connection recovery.

34. The apparatus of claim 32 or 33, wherein the processor is further configured to read a program in the memory and perform the following process:

35. The apparatus of claim 34, wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

36. The apparatus of claim 28, wherein if the change of the status of the relay UE includes a change from RRC _ CONNECTED to RRC _ IDLE or offline, or a change from RRC _ INACTIVE to RRC _ IDLE or offline, the first indication information is used to indicate at least one of the following information to the remote UE:

instructing the remote UE to perform relay UE reselection.

37. An information processing device applied to a far-end UE comprises: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

receiving first indication information sent by relay UE;

processing according to the first indication information;

38. The apparatus of claim 37, wherein the change of the status of the relay UE comprises at least one of:

change from RRC _ IDLE to RRC _ CONNECTED;

change from RRC _ INACTIVE to RRC _ CONNECTED;

change from RRC _ CONNECTED to RRC _ INACTIVE;

change from RRC _ CONNECTED to RRC _ IDLE or offline;

change from RRC _ INACTIVE to RRC _ IDLE or offline.

39. The apparatus of claim 38, wherein if the change in the state of the relay UE comprises a change from RRC _ IDLE to RRC _ CONNECTED or from RRC _ INACTIVE to RRC _ CONNECTED, the processor is further configured to read a program in the memory and perform at least one of the following procedures:

sending a direct communication interface BSR to the relay UE;

and sending data needing to be relayed to the relay UE.

40. The apparatus of claim 38, wherein if the change in the status of the relay UE comprises a change from RRC _ CONNECTED to RRC _ INACTIVE, the processor is further configured to read a program in the memory to perform the following procedure:

41. The apparatus of claim 40, wherein the second indication information further comprises UE identity information used by the remote UE for requesting relay connection recovery.

42. The apparatus of claim 38, wherein if the change in the state of the relay UE comprises a change from RRC _ CONNECTED to RRC _ IDLE or out-of-network, or a change from RRC _ INACTIVE to RRC _ IDLE or out-of-network, or a change from RRC _ CONNECTED to RRC _ INACTIVE, the processor is further configured to read a program in the memory to perform the following procedure:

and reselecting the relay UE according to the first indication information.

43. An information processing apparatus applied to a network apparatus of a first cell, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

44. The apparatus of claim 43, wherein the third indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

the fourth indication information includes at least one of:

the relay UE is used as identification information of the relay UE;

45. An information processing apparatus applied to a network apparatus of a second cell, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

46. The apparatus of claim 45, wherein the fourth indication information comprises at least one of:

the relay UE is used as identification information of the relay UE;

47. The apparatus of claim 45, wherein the processor is further configured to read a program in the memory and perform the following:

48. A readable storage medium storing a program, wherein the program realizes the steps in the information processing method according to any one of claims 1 to 22 when executed by a processor.