CN113965923B

CN113965923B - Information processing method, device, equipment and readable storage medium

Info

Publication number: CN113965923B
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: 2024-01-05
Anticipated expiration: 2040-07-21
Also published as: WO2022017407A1; CN113965923A

Abstract

The invention discloses an information processing method, an information processing device, information processing equipment and a readable storage medium, which relate to the technical field of communication and are used for ensuring that a 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 the remote UE, wherein the first indication information is used for indicating at least one of the following information to the remote UE: and the current state of the relay UE and 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 apparatus, a device, and a readable storage medium.

Background

One solution to extend network coverage is to introduce relays. The relay may be a terminal having a relay function. For UE-to-Network Relay (UE-to-Network Relay), the interface between the Relay UE and the Network uses Uu interface, and the interface between the Relay UE (User Equipment) and the Remote UE (Remote UE) uses direct communication interface. The remote UE may also be referred to as a relayed UE, which may establish a connection with the network or with 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.

There are only two RRC (Radio Resource Control ) states of UEs in LTE (Long Term Evolution, long term evolution) systems: rrc_idle (RRC IDLE state) and rrc_connected (RRC CONNECTED state). There are three RRC states of a 5G NR (New Radio) UE: rrc_idle, rrc_inactive (RRC INACTIVE state), and rrc_connected. The purpose of introducing rrc_inactive is two: 1) When there is no data transmission requirement, the returned RRC_INACTIVE can restore the RRC connection faster than the returned RRC_IDLE; 2) When the UE moves, rrc_inactive may reduce signaling overhead relative to rrc_connected state.

In the LTE system, if the UE operates as a relay, it is mandatory that the relay UE must be in the rrc_connected state. However, for the NR system, how to ensure the normal operation of the entire relay system when the state of the relay UE is changed is a problem to be solved.

Disclosure of Invention

The embodiment of the invention provides an information processing method, an information processing device, information processing equipment and a readable storage medium, which are used for ensuring that the whole relay system can still work normally when the state of relay UE is changed.

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

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

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

Wherein the status change of the relay UE includes 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 off-line;

change from rrc_inactive to rrc_idle or off-network.

Wherein if the status 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 to the remote UE at least one of the following information:

indicating the current state of the relay UE to be an RRC_CONNECTED state;

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

Wherein, if the status change of the relay UE includes a change from rrc_connected to rrc_inactive, the first indication information is used to indicate to the remote UE at least one of the following information:

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

indicating the current state of the relay UE to be an RRC_INACTIVE state;

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

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

and indicating the remote UE to execute relay UE reselection.

The remote UE is configured to request UE identification information used when relay connection is restored to be allocated to the remote UE when the network device notifies the relay UE to enter an rrc_inactive state.

Wherein if the status change of the relay UE includes a change from rrc_connected to rrc_inactive, the method further includes:

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

The second indication information further includes UE identification information used when the remote UE requests the relay connection to resume.

Wherein the method further comprises:

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

Wherein the third indication information includes at least one of:

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

the remote UE is configured to determine, according to the identification information of a second cell, a cell in which 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 off-line, or changing from rrc_inactive to rrc_idle or off-line, the first indication information is used to indicate to the remote UE at least one of the following information:

indicating the current state of the relay UE to be an RRC_IDLE or off-network state;

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

and indicating the remote UE to execute 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;

The first indication information is sent by the relay UE when the state of the relay UE is changed, and is used for indicating at least one of the following information to the remote UE:

Wherein the status change of the relay UE includes 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 off-line;

change from rrc_inactive to rrc_idle or off-network.

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 processing according to the first indication information includes at least one of the following steps:

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

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

Wherein if the status change of the relay UE includes a change 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 off-line, or changing from rrc_inactive to rrc_idle or off-line, or changing from rrc_connected to rrc_inactive, the processing according to the first instruction information includes:

and performing relay UE reselection 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 of a first cell, including:

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

transmitting fourth indication information to the network equipment of the second cell through an inter-base station or inter-cell interface, wherein the fourth indication information is used for requesting the UE context of the relay UE, or the UE context of the relay UE and 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 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 includes at least one of:

Wherein the fourth indication information includes at least one of:

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

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

according to the fourth indication information, sending a relay UE or a UE context of the relay UE and a remote UE served by the relay UE to 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, 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 includes at least one of:

Wherein the method further comprises:

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

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

the first sending module is configured to send first indication information to a remote UE if a status of the 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, applied to a network device of a first cell, including:

the first receiving module is used for receiving third indication information sent by the relay UE, wherein the third indication information is used for requesting to recover the 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, 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 UE contexts of the relay UE and a remote UE served by the relay UE; the second cell is a cell where 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, applied to a network device of a second cell, including:

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 UE contexts of the relay UE and a remote UE served by the relay UE;

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

In a ninth aspect, an embodiment of the present invention provides an information processing apparatus applied to a relay 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:

Wherein the status change of the relay UE includes 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 off-line;

change from rrc_inactive to rrc_idle or off-network.

indicating the current state of the relay UE to be an RRC_CONNECTED state;

indicating the current state of the relay UE to be an RRC_INACTIVE state;

And indicating the remote UE to execute relay UE reselection.

Wherein if the status change of the relay UE includes a change from rrc_connected to rrc_inactive, the processor is further configured to read the program in the memory, and perform the following procedure:

Wherein the processor is further configured to read the program in the memory, and perform the following procedures:

Wherein the third indication information includes at least one of:

and indicating the remote UE to execute 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 configured to read the program in the memory, and execute the following procedures:

receiving first indication information sent by relay UE;

Processing according to the first indication information;

Wherein the status change of the relay UE includes 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 off-line;

change from rrc_inactive to rrc_idle or off-network.

Wherein if the status change 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 the program in the memory, and perform at least one of the following:

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

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

Wherein if the status change of the relay UE includes a change from rrc_connected to rrc_idle or off-line, or a change from rrc_inactive to rrc_idle or off-line, or a change from rrc_connected to rrc_inactive, the processor is further configured to read the program in the memory, and perform the following procedures:

In an eleventh aspect, an embodiment of the present invention provides an information processing apparatus, applied to a network apparatus of a first cell, 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:

Wherein the third indication information includes at least one of:

the remote UE is in the identification information of a second cell, wherein the second cell is a cell where the relay UE resides before entering an RRC_INACTIVE state;

the fourth indication information includes at least one of:

In a twelfth aspect, an embodiment of the present invention provides an information processing apparatus, applied to a network apparatus of a second cell, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is configured to read the program in the memory, and execute the following procedures:

Wherein the fourth indication information includes at least one of:

In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium storing a program, wherein the program when executed by a processor implements the steps of the information processing method according to any one of the preceding 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 that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is one of the flowcharts of an information processing method provided by an embodiment of the present 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 flowchart of a method for processing information according to an embodiment of the present invention;

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

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

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

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

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

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

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

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, fig. 1 is a flowchart of an information processing method provided by an embodiment of the present invention, 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 the 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 a state of RRC after the state of the relay UE is changed, and the operations to be performed by the remote UE may include, for example, performing relay UE reselection.

Wherein the status change of the relay UE includes at least one of:

(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 off-line;

(5) Change from rrc_inactive to rrc_idle or off-network.

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

A. indicating the current state of the relay UE to be an RRC_CONNECTED state;

B. and indicating that the connection establishment or recovery of the relay link is completed, 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 to the remote UE at least one of the following information:

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

B. Indicating the current state of the relay UE to be an RRC_INACTIVE state;

C. indicating a relay link interruption, wherein the relay link is a link between the relay UE and the network equipment;

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

E. and indicating the remote UE to execute relay UE reselection.

For the above (3), 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 relay requirements. The second indication information further includes UE identification information used when the remote UE requests the relay connection to resume.

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

Wherein the third indication information includes at least one of:

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

A. indicating the current state of the relay UE to be an RRC_IDLE state;

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

C. and indicating the remote UE to execute 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, applied to a remote UE, as shown in fig. 2, including the following steps:

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

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

In the embodiment of the present invention, the status change of the relay UE includes at least one of the following cases:

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 off-line;

change from rrc_inactive to rrc_idle or off-network.

Step 202, processing according to the first indication information;

if the status 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 the data needing to be relayed to the relay UE.

If the status 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 a change from rrc_connected to rrc_idle or off-line, or a change from rrc_inactive to rrc_idle or off-line, or a change from rrc_connected to rrc_inactive, this step may include:

Referring to fig. 3, fig. 3 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 first cell, as shown in fig. 3, and includes the following steps:

Step 301, receiving third indication information sent by a relay UE, where the third indication information is used to request to restore 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 includes at least one of:

Step 302, sending fourth indication information to the network device of the second cell through the 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 UE context of the relay UE and 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 includes at least one of:

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, as shown in fig. 4, and includes the following steps:

step 401, receiving fourth indication information sent by a network device of the 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.

And step 402, according to the fourth indication information, sending a relay UE or UE context of the relay UE and a remote UE served by the relay UE to the network equipment of the first cell.

Wherein the fourth indication information includes at least one of:

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 provided in 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, RRC connection/recovery is established between the relay UE and the network device.

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 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 the current state of the relay UE to be 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 provided in 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 when the relay UE requests Uu interface RRC connection recovery. Assuming that the cell where the relay UE currently resides is a first cell, the serving cell before the relay UE enters rrc_inactive is a second cell. As shown in fig. 6, the method comprises the following steps:

in 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 suspendConfig. Of course, this can be achieved by other RRC messages.

The RRC message at least includes UE identification information used by the relay UE to request Uu interface RRC connection recovery.

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

indicating the current state of the relay UE to be an RRC_INACTIVE state;

and indicating the remote UE to execute 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 needs to be responded to, 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.

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

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

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

And the third indication information at least comprises UE identification information used by the relay UE when the relay UE requests the recovery of the Uu interface RRC connection. Optionally, the relay UE may also function as identification information of the relay UE.

Step 606, the first cell requests the relay UE or the UE context of the relay UE and the remote UE served by the relay UE from the second cell, and the second cell sends the relay UE or the UE context of 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 fourth indication information to the serving base station of the second cell (e.g., send fourth indication information via 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 configured to request UE identification information used when Uu interface RRC connection is restored. Optionally, the relay UE may also function as identification information of the relay UE.

And the second cell receives the fourth indication information, and sends the UE 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 UE context of the relay UE or the relay UE and the remote UE to the first cell through an inter-base station interface using a RETRIEVE UE CONTEXT RESPONSE message.

Steps 607-608 the relay UE completes RRC connection restoration in the first cell.

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

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

Referring to fig. 7, fig. 7 is a flowchart of an information processing method provided in 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 Uu interface RRC connection recovery and UE identification information used by the remote UE for requesting relay connection recovery. Assuming that the cell where the relay UE currently resides is a first cell, the serving cell before the relay UE enters rrc_inactive is a 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 includes at least UE identification information used by the relay UE to request Uu interface RRC connection restoration. Optionally, UE identification information used when the remote UE requests relay connection recovery may also be carried.

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

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

indicating the current state of the relay UE to be an RRC_INACTIVE state;

and indicating the remote UE to execute relay UE reselection.

Step 703, response message of the first indication message.

The response message is an optional message. If the first indication message needs to be responded to, 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.

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

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

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

The third indication information includes at least one of:

In step 706, the first cell requests the UE context of the relay UE or the relay UE and the remote UE served by the relay UE from the second cell, 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 fourth indication information to the serving base station of the second cell through the inter-base station interface (e.g., send fourth indication information through 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 reason for carrying the identification information of the remote UE is mainly because the relay UE enters rrc_inactive state until the time of recovery, some remote UEs may no longer be served by the relay UE, and it is not necessary for this part of UEs to acquire their UE context.

That is, when the second cell receives the fourth indication information, the UE context of the relay UE and the remote UE is sent to the first cell (e.g. through a RETRIEVE UE CONTEXT RESPONSE message). For UE context of the remote UE originally served by the relay UE but not included in the fourth indication information of the relay UE, the second cell may be directly deleted.

Steps 707-708 the relay UE completes RRC connection restoration in the first cell.

Referring to fig. 8, fig. 8 is a flowchart of an information processing method provided in 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, RRC connection release is performed 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 the current state of the relay UE to be an RRC_IDLE state;

and indicating the remote UE to execute relay UE reselection.

And after the remote UE receives the first indication information, the relay UE reselection can be executed.

Referring to fig. 9, fig. 9 is a flowchart of an information processing method provided in 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 off-network. As shown in fig. 9, the method comprises the following steps:

in step 901, the RRC connection between the relay UE and the network device is interrupted, and the state of the relay UE is changed to the off-network state.

There are many reasons for the interruption of the RRC connection, such as a blind spot where the relay UE enters network coverage, etc.

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

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

indicating the current state of the relay UE to be an off-network state;

and indicating the remote UE to execute 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 by 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 provided in an embodiment of the present invention. Since the principle of solving the problem of the information processing apparatus is similar to that of the information processing method in the embodiment of the present invention, the implementation of the information processing apparatus can refer to the implementation of the method, and the repetition is omitted.

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

Optionally, in the embodiment of the present invention, the status change of the relay UE includes at least one of the following cases:

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 off-line;

change from rrc_inactive to rrc_idle or off-network.

Optionally, 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 to the remote UE at least one of the following information:

indicating the current state of the relay UE to be an RRC_CONNECTED state;

Optionally, if the status change of the relay UE includes changing from rrc_connected to rrc_inactive, the first indication information is used to indicate to the remote UE at least one of the following information:

indicating the current state of the relay UE to be an RRC_INACTIVE state;

and indicating the remote UE to execute relay UE reselection.

Optionally, the UE identification information used by the remote UE when requesting the relay connection recovery 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:

and the first receiving module is used for receiving second indication information sent by the remote UE if the state change of the relay UE comprises changing from RRC_CONNECTED to RRC_INACTIVE, wherein the second indication information is used for indicating that the remote UE has relay requirements.

Optionally, the second indication information further includes UE identification information used when the remote UE requests the relay connection to recover.

Optionally, the apparatus may further include: the second sending module is configured to send third indication information to the network device through the first cell, where the third indication information is used to request to restore RRC connection of the relay UE on the 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:

Optionally, if the state change of the relay UE includes changing from rrc_connected to rrc_idle or off-line, or changing from rrc_inactive to rrc_idle or off-line, the first indication information is used to indicate to the remote UE at least one of the following information:

and indicating the remote UE to execute relay UE reselection.

The device provided by the embodiment of the present invention may execute the above method embodiment, and its implementation principle and technical effects are similar, and this embodiment will not be described herein.

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 block diagram of an information processing apparatus provided in an embodiment of the present invention. Since the principle of solving the problem of the information processing apparatus is similar to that of the information processing method in the embodiment of the present invention, the implementation of the information processing apparatus can refer to the implementation of the method, and the repetition is omitted.

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

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

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 off-line;

change from rrc_inactive to rrc_idle or off-network.

Optionally, 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 processing module is configured to perform at least one of:

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

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

Optionally, if the status change 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 state change of the relay UE includes changing from rrc_connected to rrc_idle or off-line, or changing from rrc_inactive to rrc_idle or off-line, or changing from rrc_connected to rrc_inactive, the first processing module is configured to reselect 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 provided in an embodiment of the present invention. Since the principle of solving the problem of the information processing apparatus is similar to that of the information processing method in the embodiment of the present invention, the implementation of the information processing apparatus can refer to the implementation of the method, and the repetition is omitted.

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 to restore 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 UE contexts of the relay UE and a remote UE served by the relay UE; wherein 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:

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

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 provided in an embodiment of the present invention. Since the principle of solving the problem of the information processing apparatus is similar to that of the information processing method in the embodiment of the present invention, the implementation of the information processing apparatus can refer to the implementation of the method, and the repetition is omitted.

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, to a network device of the first cell, a UE context of a relay UE or a remote UE served by the relay UE and the relay UE according to the fourth indication information; the fourth indication information is sent by the network device of the first cell according to third indication information of 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 fourth indication information includes at least one of:

Optionally, the apparatus may further include: and the first processing module is used for deleting the context of the target remote UE if the identification information of the target remote UE stored in the second cell is not included in the fourth indication information, wherein the target remote UE comprises the remote UE which is stored in the second cell and has an association relation with the relay UE.

As shown in fig. 14, an information processing apparatus of an embodiment of the present invention includes: processor 1400, for reading the program in memory 1420, performs the following process:

Transmitting fourth indication information to the network equipment of the second cell through an inter-base station or inter-cell interface, wherein the fourth indication information is used for requesting the UE context of the relay UE, or the UE context of the relay UE and 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 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.

Wherein in fig. 14, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1400 and various circuits of the memory represented by the memory 1420, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1410 may be a number of elements, i.e., include a transmitter and a receiver, providing 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 fourth indication information includes at least one of:

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 the network apparatus of the second cell. At this time, the processor 1400, for reading the program in the memory 1420, performs the following process:

The fourth indication information includes at least one of:

The processor 1400 is also configured to read the program in the memory, and perform the following procedures:

As shown in fig. 15, an information processing apparatus of an embodiment of the present invention includes: processor 1500, for reading the program in memory 1520, performs the following process:

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

Where in FIG. 15, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, as represented by processor 1500, and the memory, as represented by memory 1520, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1510 may be a number of elements, including a transmitter and a receiver, providing 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 an inscribed desired device for a different user device, 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 off-line;

change from rrc_inactive to rrc_idle or off-network.

indicating the current state of the relay UE to be an RRC_CONNECTED state;

Indicating the current state of the relay UE to be an RRC_INACTIVE state;

and indicating the remote UE to execute relay UE reselection.

Optionally, if the status change of the relay UE includes a change from rrc_connected to rrc_inactive, the processor 1500 is further configured to read the procedure and perform the following steps:

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

Wherein the third indication information includes at least one of:

and indicating the remote UE to execute relay UE reselection.

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 perform the following steps:

receiving first indication information sent by relay UE;

Processing according to the first indication information;

Wherein the status change of the relay UE includes 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 off-line;

change from rrc_inactive to rrc_idle or off-network.

If the status change of the relay UE includes a change from rrc_idle to rrc_connected or from rrc_inactive to rrc_connected, the processor 1500 is further configured to read the procedure, and perform the following steps:

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

If the status change of the relay UE includes a change 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 when the remote UE requests relay connection recovery.

If the status change 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, or a change from rrc_connected to rrc_inactive, the processor 1500 is further configured to read the procedure, and perform the following steps: and performing relay UE reselection according to the first indication information.

The embodiment of the invention also provides a readable storage medium, and a program is stored on the readable storage medium, and when the program is executed by a processor, the program realizes the processes of the embodiment of the information processing method, and can achieve the same technical effects, so that repetition is avoided, and the description is omitted here. The readable storage medium is, for example, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, an optical disk, or the like.

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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. In light of such understanding, the technical solutions of the present invention may be embodied essentially or in part in the form of a software product stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims

1. An information processing method applied to a relay user equipment UE, comprising:

the current state of the relay UE and the operation to be executed by the remote UE;

the status change of the relay UE includes at least one of:

changing from the RRC IDLE state RRC_IDLE to the RRC CONNECTED state RRC_CONNECTED;

change from RRC INACTIVE state rrc_inactive to rrc_connected;

change from rrc_connected to rrc_inactive;

change from rrc_connected to rrc_idle or off-line;

change from rrc_inactive to rrc_idle or off-network;

if the status change of the relay UE includes a change from rrc_connected to rrc_inactive, the method further includes:

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;

2. The method according to claim 1, wherein the first indication information is used to indicate to the remote UE at least one of the following information if the status change of the relay UE includes a change from rrc_idle to rrc_connected or a change from rrc_inactive to rrc_connected:

indicating the current state of the relay UE to be an RRC_CONNECTED state;

3. The method according to claim 1, wherein if the status change of the relay UE includes a change from rrc_connected to rrc_inactive, the first indication information is used to indicate to the remote UE at least one of:

indicating the current state of the relay UE to be an RRC_INACTIVE state;

and indicating the remote UE to execute relay UE reselection.

4. A method according to claim 3, wherein the UE identification information used by the remote UE when requesting relay connection restoration is allocated to the remote UE when the network device notifies the relay UE to enter rrc_inactive state.

5. The method according to claim 1, wherein the method further comprises:

6. The method of claim 5, wherein the third indication information comprises at least one of:

7. The method according to claim 2, wherein the first indication information is used to indicate to the remote UE at least one of the following information if the status change 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:

and indicating the remote UE to execute relay UE reselection.

8. 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;

the status change of the relay UE includes at least one of:

Change from RRC INACTIVE state rrc_inactive to rrc_connected;

change from rrc_connected to rrc_inactive;

change from rrc_connected to rrc_idle or off-line;

change from rrc_inactive to rrc_idle or off-network;

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:

sending second indication information to the relay UE, wherein the second indication information is used for indicating that the remote UE has a relay requirement;

9. The method according to claim 8, wherein if the status change 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 includes at least one of:

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

10. The method according to claim 8, wherein if the status change of the relay UE includes a change from rrc_connected to rrc_idle or off-line, or a change from rrc_inactive to rrc_idle or off-line, or a change from rrc_connected to rrc_inactive, the processing according to the first indication information includes:

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

12. The method of claim 11, wherein the third indication information comprises at least one of:

13. The method of claim 11, wherein the fourth indication information comprises at least one of:

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

15. The method of claim 14, wherein the fourth indication information comprises at least one of:

16. The method of claim 14, wherein the method further comprises:

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

the status change of the relay UE includes at least one of:

change from RRC INACTIVE state rrc_inactive to rrc_connected;

change from rrc_connected to rrc_inactive;

change from rrc_connected to rrc_idle or off-line;

change from rrc_inactive to rrc_idle or off-network;

the first receiving module is used for receiving second indication information sent by the remote UE if the state change of the relay UE comprises changing from RRC_CONNECTED to RRC_INACTIVE, wherein the second indication information is used for indicating that the remote UE has a relay requirement;

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

the status change of the relay UE includes at least one of:

change from RRC INACTIVE state rrc_inactive to rrc_connected;

change from rrc_connected to rrc_inactive;

change from rrc_connected to rrc_idle or off-line;

change from rrc_inactive to rrc_idle or off-network;

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

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

21. An information processing apparatus 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:

the status change of the relay UE includes at least one of:

Change from RRC INACTIVE state rrc_inactive to rrc_connected;

change from rrc_connected to rrc_inactive;

change from rrc_connected to rrc_idle or off-line;

change from rrc_inactive to rrc_idle or off-network;

if the status change of the relay UE includes a change from rrc_connected to rrc_inactive, the processor is further configured to read the program in the memory, perform the following procedure:

22. The apparatus of claim 21, wherein the first indication information is used to indicate to the remote UE at least one of the following information if the status change of the relay UE includes a change from rrc_idle to rrc_connected or a change from rrc_inactive to rrc_connected:

indicating the current state of the relay UE to be an RRC_CONNECTED state;

23. The apparatus of claim 21, wherein the first indication information is used to indicate to the remote UE at least one of the following information if the status change of the relay UE includes a change from rrc_connected to rrc_inactive:

indicating the current state of the relay UE to be an RRC_INACTIVE state;

and indicating the remote UE to execute relay UE reselection.

24. The apparatus of claim 23, wherein the UE identification information used by the remote UE when requesting relay connection restoration is allocated to the remote UE when the network device notifies the relay UE to enter an rrc_inactive state.

25. The apparatus of claim 21, wherein the processor is further configured to read a program in the memory to perform the following:

26. The device of claim 25, wherein the third indication information comprises at least one of:

27. The apparatus of claim 21, wherein the first indication information is used to indicate to the remote UE at least one of the following information if the status change 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:

and indicating the remote UE to execute relay UE reselection.

28. An information processing apparatus, applied to a remote 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:

receiving first indication information sent by relay UE;

Processing according to the first indication information;

the status change of the relay UE includes at least one of:

change from RRC INACTIVE state rrc_inactive to rrc_connected;

change from rrc_connected to rrc_inactive;

change from rrc_connected to rrc_idle or off-line;

change from rrc_inactive to rrc_idle or off-network;

29. The apparatus of claim 28, wherein if the status change 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 the program in the memory to perform at least one of the following:

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

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

30. The apparatus of claim 28, wherein if the status change of the relay UE includes a change from rrc_connected to rrc_idle or off-line, or a change from rrc_inactive to rrc_idle or off-line, or a change from rrc_connected to rrc_inactive, the processor is further configured to read the program in the memory, to perform the following:

31. 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:

32. The device of claim 31, wherein the third indication information comprises at least one of:

the fourth indication information includes at least one of:

33. 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:

34. The device of claim 33, wherein the fourth indication information comprises at least one of:

35. The apparatus of claim 33, wherein the processor is further configured to read a program in the memory to perform the following:

36. A readable storage medium storing a program, wherein the program when executed by a processor implements the steps in the information processing method according to any one of claims 1 to 16.