CN115567988B

CN115567988B - Cell evaluation method, device, terminal, relay and storage medium

Info

Publication number: CN115567988B
Application number: CN202110744500.6A
Authority: CN
Inventors: 梁敬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2025-01-03
Anticipated expiration: 2041-07-01
Also published as: CN115567988A; WO2023274072A1

Abstract

The embodiment of the application provides a cell evaluation method, a device, a terminal, a relay and a storage medium, which belong to the technical field of communication; wherein in the first state the remote terminal has completed the selection or reselection of a relay or in the first state the remote terminal has connected a relay.

Description

Cell evaluation method, device, terminal, relay and storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a cell evaluation method, a cell evaluation device, a terminal, a relay and a storage medium.

Background

Currently in some communication systems, such as 5G systems, the terminal resides on a direct link (DIRECT LINK), and when the direct link quality is poor, the terminal may perform cell selection or reselection evaluation. But in the case where the terminal has completed the selection or reselection of the relay or in the case where the terminal has connected the relay, the terminal does not perform the evaluation of the cell selection or reselection, resulting in poor communication reliability of the terminal.

Disclosure of Invention

The embodiment of the application provides a cell evaluation method, a cell evaluation device, a terminal, a relay and a storage medium, which can solve the problem of poor communication reliability of the terminal.

In a first aspect, a method for evaluating a cell is provided, including:

The remote terminal performs cell selection or reselection evaluation in a first state;

Wherein in the first state the remote terminal has completed the selection or reselection of a relay or in the first state the remote terminal has connected a relay.

In a second aspect, a cell evaluation method is provided, including:

In case a relay is already connected to a remote terminal, the relay performs an evaluation of cell selection or reselection;

In the case where the relay determines that the condition for cell selection or reselection is satisfied, the relay performs cell selection or reselection;

wherein the relay is informed to the remote terminal that the cell selection or reselection has been performed after the cell selection or reselection is performed, or the cell selection or reselection is performed after the confirmation of the remote terminal is received.

In a third aspect, a cell evaluation apparatus is provided, where a remote terminal includes the apparatus, including:

A first execution module for executing an evaluation of cell selection or reselection in a first state;

In a fourth aspect, there is provided a cell evaluation apparatus, a relay including the apparatus, including:

a first execution module for executing an evaluation of cell selection or reselection in case that the relay has been connected with the remote terminal;

a second execution module, configured to execute cell selection or reselection when the relay determines that a condition for cell selection or reselection is satisfied;

In a fifth aspect, a terminal is provided, where the terminal is a remote terminal, and the terminal includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction is executed by the processor to implement the steps of the remote terminal side cell evaluation method provided by the present application.

In a sixth aspect, a terminal is provided, where the terminal is a remote terminal and includes a processor and a communication interface, where the processor or the communication interface is configured to perform, in a first state, an evaluation of cell selection or reselection;

In a seventh aspect, a relay is provided, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, where the program or the instruction implements the steps of the relay-side cell evaluation method provided by the present application when executed by the processor.

In an eighth aspect, a relay is provided, including a processor and a communication interface, where the communication interface is configured to:

in case the relay has been connected to the remote terminal, performing an evaluation of cell selection or reselection;

Performing cell selection or reselection in case the relay determines that a condition for cell selection or reselection is satisfied;

In a ninth aspect, there is provided a readable storage medium storing thereon a program or instructions that when executed by a processor realize the steps of the cell evaluation method on the far-end terminal side provided by the present application, or that when executed by a processor realize the steps of the cell evaluation method on the relay side provided by the present application.

In a tenth aspect, a computer program/program product is provided, which is stored in a non-volatile storage medium, and which is executed by at least one processor to implement the steps of the uplink transmission method on the far-end terminal side or the relay side provided by the present application.

In the embodiment of the application, the remote terminal performs the evaluation of cell selection or reselection in the first state, wherein the remote terminal has completed the selection or reselection of the relay in the first state or has connected the relay in the first state. Since the remote terminal can perform the evaluation of cell selection or reselection in the above-described first state, the remote terminal can normally perform the evaluation operation of cell selection or reselection even in the case of communication through relay, and thus the communication reliability of the terminal can be improved.

Drawings

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flowchart of a cell evaluation method according to an embodiment of the present application;

Fig. 3 is a flowchart of another cell evaluation method according to an embodiment of the present application;

fig. 4 is a block diagram of a cell evaluation apparatus according to an embodiment of the present application;

fig. 5 is a block diagram of another cell evaluation apparatus according to an embodiment of the present application;

fig. 6 is a block diagram of a communication device according to an embodiment of the present application;

Fig. 7 is a block diagram of a terminal according to an embodiment of the present application;

fig. 8 is a block diagram of a relay according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example, and in much of the description that follows, NR terminology is used, these techniques may also be applied to applications other than NR system applications, such as the 6th generation (6th Generation,6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a remote terminal (remote UE) 11, a Relay (Relay) 12, and a network-side device 13.

The remote terminal 11 may also be called a terminal device or a User Equipment (UE), and the remote terminal 11 may be a Mobile phone, a tablet pc (Tablet Personal Computer), a Laptop (lapop Computer) or a terminal-side device called a notebook (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an ultra-Mobile Personal Computer (ultra-Mobile Personal Computer, UMPC), a Mobile internet device (Mobile INTERNET DEVICE, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), and the wearable device may include a smart watch, a bracelet, an earphone, a glasses, and the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.

The relay 12 may be a dedicated relay device, or a relay terminal (relay UE). Wherein the remote terminal 11 may be connected to the network side device 13 through one or more relays 12. When the remote terminal 11 is connected to the network device 13 through the plurality of relays 12, the plurality of relays 12 may adopt a serial transmission relationship, a parallel transmission relationship, or another form of transmission relationship. In fig. 1, for example, a relatively simple two-hop relay is taken as an example, one end of the relay 12 is connected to the remote terminal 11, and the other end is connected to the network-side device 13. Further, a Uu interface is provided between the relay 12 and the network side device 13, and a sidelink (sidelink, or the like) interface is provided between the relay 12 and the remote terminal 11, or a PC5 interface is also referred to.

The network side device 13 may be a base station or a core network, where the base station may be called a node B, an evolved node B, an access Point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access Point, a WiFi node, a transmission and reception Point (TRANSMITTING RECEIVING Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that, in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

In the above description, the UE-to-network scenario is mainly taken as an example, and the remote terminal 11 communicates with the network-side device 13 through the relay 12. In some embodiments, the embodiments of the present application may also be applied to a UE-to-UE relay scenario, i.e. the relay 11 is connected to different terminals.

In addition, in the embodiment of the present application, the remote terminal 11 may also directly communicate with the network side device 13.

The following describes in detail, with reference to the attached drawings, a cell evaluation method, a device, a terminal, a relay and a storage medium provided by the embodiments of the present application through some embodiments and application scenarios thereof.

Referring to fig. 2, fig. 2 is a flowchart of a cell evaluation method according to an embodiment of the present application, as shown in fig. 2, including the following steps:

step 201, the remote terminal performs cell selection or reselection evaluation in a first state;

The above-mentioned that the remote terminal has completed the selection or reselection of the relay in the first state may be understood that the remote terminal performs the evaluation of the cell selection or reselection in case the remote terminal has completed the selection or reselection of the relay.

The above-mentioned that in the first state the remote terminal has connected a relay may be understood as that in case the remote terminal has connected a relay, the remote terminal performs an evaluation of cell selection or reselection.

The evaluation of cell selection or reselection may include evaluation of cell selection or reselection based on system information and cell measurement results. Specifically, a cell may be searched, and whether the searched cell satisfies a cell selection or reselection condition is determined. For example, system information of a cell is acquired, whether the cell is forbidden to attach or access is judged, signal quality measurement is performed on the cell, and whether a signal quality measurement result meets a preset requirement is judged.

In the embodiment of the application, the above steps can realize that the remote terminal executes the evaluation of cell selection or reselection in the first state, so that the remote terminal can normally execute the evaluation operation of cell selection or reselection under the condition of communication through the relay, thereby improving the communication reliability of the terminal. For example, cell selection or reselection is performed or relay selection or reselection is performed according to the evaluation result.

As an alternative embodiment, the performing the evaluation of cell selection or reselection comprises:

the remote terminal performs an evaluation of cell selection or reselection based on a direct link (DIRECT LINK), or

The remote terminal performs an evaluation of cell selection or reselection based on an indirect link (INDIRECT LINK), or

The remote terminal performs an evaluation of cell selection or reselection based on the direct link and the indirect link.

The direct link refers to a Uu link between the terminal and the network side device, and the indirect link refers to an indirect link in which the remote terminal is connected to the relay and then connected to the network side device.

The above-mentioned remote terminal performing the evaluation of cell selection or reselection based on the direct link may be that the remote terminal performs the evaluation of cell selection or reselection based on information acquired by the direct link.

The remote terminal performs the evaluation of cell selection or reselection based on the indirect link may be the remote terminal performs the evaluation of cell selection or reselection based on information acquired by the indirect link.

The above-mentioned remote terminal performs the evaluation of cell selection or reselection based on the direct link and the indirect link may be that the remote terminal performs the evaluation of cell selection or reselection based on information acquired by the direct link and the indirect link.

In this embodiment, the above three manners can flexibly support the remote terminal to perform the evaluation of cell selection or reselection in the first state, so as to adapt to the requirements of different scenes.

Optionally, the remote terminal performs an evaluation of cell selection or reselection based on a direct link, including:

The remote terminal performs cell selection or reselection evaluation based on first system information and a first measurement result, wherein the first system information is system information received by the remote terminal based on a direct link, and the first measurement result is measurement result of the remote terminal based on direct link measurement.

The first system information may be system information sent by the remote terminal based on the direct link receiving network side device, where the system information is system information related to cell selection or reselection, such as a system information block (System Information Block, SIB) 2, SIB3, SIB4, SIB5, and the like. The remote terminal can determine whether the cell is forbidden to attach or access based on the first system information

The first measurement result is a measurement result of a home cell and/or a neighboring cell measured by the remote terminal on a direct link, such as a reference signal received Power (REFERENCE SIGNAL RECEIVED Power, RSRP) and/or a reference signal received Quality (REFERENCE SIGNAL RECEIVED Quality, RSRQ). The remote terminal may determine whether the signal quality of the cell meets a preset condition based on the first measurement result.

In this embodiment, it may be achieved that the evaluation of cell selection or reselection is performed based on the system information and measurement results acquired by the direct link.

Optionally, the remote terminal performs an evaluation of cell selection or reselection based on the first system information and the first measurement result, including:

The remote terminal performs an evaluation of cell selection or reselection based on first system information and first measurement results under a first condition, wherein the first condition includes at least one of:

the remote terminal is in the coverage area of the cell;

the remote terminal can receive system information related to cell selection or reselection.

The remote terminal may be capable of receiving system information related to cell selection or reselection, where the terminal may be capable of receiving system information based on a direct link.

The system information related to cell selection or reselection is system information for cell selection or reselection. Such as SIB2, SIB3, SIB4, SIB5, etc.

In some embodiments, the remote terminal may also perform the evaluation of cell selection or reselection directly based on the direct link instead of performing the determination of the first condition described above.

Optionally, the remote terminal performs an evaluation of cell selection or reselection based on an indirect link, including:

And the remote terminal performs cell selection or reselection evaluation based on second system information and a second measurement result, wherein the second system information is the relay forwarding system information acquired by the remote terminal based on an indirect link, and the second measurement result is the measurement result of the relay measurement acquired by the remote terminal based on the indirect link.

The second system information may be system information of the relay acquiring network side device and forwarded to the remote terminal. The second system information may be system information related to cell selection or reselection, such as SIB2, SIB3, SIB4, SIB5, etc.

The second measurement result may be a measurement result of relay measurement of the own cell and/or neighbor cell and forwarded to the remote terminal. Here, the present cell may refer to a serving cell of a relay, or may refer to a serving cell in which a remote terminal is directly within a coverage area. The second measurement may comprise RSRP and/or RSRQ.

In this embodiment, it may be achieved that the evaluation of cell selection or reselection is performed based on the indirect link acquisition system information and the measurement result.

Optionally, the remote terminal performs an evaluation of cell selection or reselection based on the second system information and the second measurement result, including:

the remote terminal performs an evaluation of cell selection or reselection based on second system information and second measurement results under a second condition, wherein the second condition includes at least one of:

the remote terminal is out of the coverage area of the cell;

the remote terminal cannot receive system information related to cell selection or reselection based on a direct link.

In this embodiment, it may be realized that the evaluation of cell selection or reselection is performed based on the second system information and the second measurement result only in the case where the above-described second condition is satisfied.

In some embodiments, the remote terminal may also perform the evaluation of cell selection or reselection directly based on the indirect link instead of performing the determination of the second condition described above.

Optionally, the remote terminal performs an evaluation of cell selection or reselection based on the direct link and the indirect link, including:

And the remote terminal performs cell selection or reselection evaluation based on third system information and a third measurement result, wherein the third system information is the relay forwarding system information acquired by the remote terminal based on an indirect link, and the third measurement result is a measurement result of the remote terminal based on direct link measurement.

The third system information may be system information of a relay acquiring network side device and forwarding the system information to the remote terminal, and the third system information may be system information related to cell selection or reselection, such as SIB2, SIB3, SIB4, SIB5, and the like.

The third measurement result is a measurement result of the home cell and/or the neighbor cell measured by the remote terminal on the direct link, such as RSRP and/or RSRQ.

In this embodiment, it is possible to realize an evaluation of performing cell selection or reselection based on system information acquired by an indirect link and measurement results acquired by a direct link.

Optionally, the remote terminal performs an evaluation of cell selection or reselection based on the third system information and the third measurement result, including:

The remote terminal performs an evaluation of cell selection or reselection based on third system information and third measurement results under a third condition, wherein the third condition includes at least one of:

the remote terminal is out of the coverage area of the cell;

In this embodiment, it may be realized that the evaluation of cell selection or reselection is performed based on the third system information and the third measurement result only in the case where the above-described third condition is satisfied.

In some embodiments, the remote terminal may also perform the evaluation of cell selection or reselection directly based on the direct link and the indirect link, instead of performing the determination of the third condition described above.

As an alternative embodiment, the method further comprises:

In case the remote terminal determines that the cell selection or reselection condition is met, the remote terminal continues to camp on the indirect link of the remote terminal and the relay, or

In the case that the remote terminal determines that a cell selection or reselection condition is satisfied, the remote terminal performs cell selection or reselection, camps on the direct link, and performs at least one of:

notifying the relay that the remote terminal has performed cell selection or reselection;

Triggering release of a unicast link between the remote terminal and the relay;

Triggering a corresponding TAU or RNAU procedure in case the selected or reselected cell is in a different TA or RNA than the serving cell to which the relay is connected;

in case the selected or reselected cell does not belong to the TA or RNA of the remote terminal, the corresponding TAU or RNAU procedure is triggered.

The above condition for satisfying cell selection or reselection may be that the remote terminal determines that the condition for satisfying cell selection or reselection is satisfied based on the acquired system information and measurement result. The conditions for cell selection or reselection may be defined in the protocol, or newly defined in a subsequent protocol, which is not limited.

In the above embodiment, after the above condition is met, whether the remote terminal continues to camp on the indirect link between the remote terminal and the relay or performs cell selection or reselection, and camping on the direct link may be specifically determined based on implementation of the remote terminal, for example, whether the remote terminal camps on the indirect link between the remote terminal and the relay or selects to perform cell selection or reselection according to implementation configuration or requirement of the remote terminal, and camps on the direct link.

In this embodiment, by informing the relay that the remote terminal has performed cell selection or reselection, the relay may be made aware that the remote terminal has performed cell selection or reselection, so that the relay may perform a corresponding action, e.g. stopping forwarding of all or part of the data to avoid transmission resources.

In this embodiment, by triggering the release of the unicast link between the remote terminal and the relay, transmission resources can be saved.

In this embodiment, by triggering the corresponding TAU or RNAU procedure, it can be ensured that the terminal TA or RNA is timely and real-time, so as to improve the communication performance of the terminal.

It should be noted that the above embodiments may be applied to all scenarios in which the evaluation of cell selection or reselection is performed. In addition, in some embodiments, the remote terminal may or may not be camping on the direct link while performing cell selection or reselection, at least one of:

Triggering release of a unicast link between the remote terminal and the relay;

As an alternative embodiment, the method further comprises:

In case the remote terminal determines that a condition for cell selection or reselection is fulfilled, at least one of the following is performed:

Notifying the relay to select or reselect a cell;

Transmitting a target cell identifier of the relay for cell selection or reselection to the relay;

reserving a unicast link between the remote terminal and the relay;

triggering a corresponding TAU or RNAU procedure in case the selected or reselected cell does not belong to the TA or RNA of the remote terminal;

the cell selection or reselection can be performed by notifying the relay, and when the remote terminal determines that the condition of cell selection or reselection is met, the relay performs cell selection or reselection, so that the communication reliability of the relay can be improved.

The target cell identifier may be a target cell selected or reselected by the remote terminal, and specifically may include at least one of the following:

Physical cell identity (PHYSICAL CELL ID, PCI), frequency point information, NR cell identity (NR CELL IDENTIFIER, NCI), NR cell global identifier (NR Cell Global Identifier, NCGI).

By sending the target cell identifier of the relay for cell selection or reselection to the relay, the remote terminal can tell the relay of the target cell for cell selection or reselection, so that the relay can quickly select or reselect the target cell.

In this embodiment, since the relay can perform cell selection or reselection, it is achieved that the remote terminal and the relay perform as a whole, selecting or reselecting to another cell, which corresponds to the remote terminal and the relay performing group cell reselection similar to group handover.

In this embodiment, the present invention can be applied to a scenario in which a remote terminal performs evaluation of cell selection or reselection based on an indirect link.

As an alternative embodiment, the method further comprises:

performing relay selection or reselection, wherein a selected or reselected relay serving cell is a target neighbor cell, and the target neighbor cell is a neighbor cell for performing cell selection or reselection determination;

Wherein the cell to which the relay belongs can be known from discovery messages or other messages.

In this embodiment, it may be implemented to perform relay selection or reselection when the remote terminal determines that the condition of cell selection or reselection is satisfied, and since the selected serving cell is a relay of the target neighbor cell, the communication quality of the remote terminal connected to the relay is improved.

In some embodiments, when the condition of cell selection or reselection is satisfied, relay selection or reselection is directly performed, and whether the serving cell of the relay is the target neighbor cell may be not considered.

In addition, the triggering of the corresponding TAU or RNAU procedure may be triggering the selected or reselected relay to perform the TAU or RNAU procedure.

As an alternative embodiment, the method further comprises:

the remote terminal performs relay selection or reselection evaluation in a second state, and does not perform cell selection or reselection evaluation, wherein the second state comprises at least one of the following:

the remote terminal is out of the coverage area of the cell;

the remote terminal cannot receive cell selection or reselection related system information from the direct link.

In this embodiment, it may be achieved that in the second state, no evaluation of cell selection or reselection is performed, so that failure caused by the remote terminal attempting to acquire the system information from the direct link in the second state is avoided, and power consumption of the terminal is further saved. In addition, as the remote terminal performs relay selection or reselection evaluation in the second state, the remote terminal can perform relay selection or reselection, so that the communication reliability of the remote terminal is improved.

As an alternative embodiment, in the first state the remote terminal having connected a relay comprises at least one of:

the remote terminal having established a radio resource control (Radio Resource Control, RRC) connection with the relay;

and under the condition that the remote terminal is in an idle state or an inactive state, the remote terminal is connected with the relay.

The remote terminal and the relay have established an RRC connection, which may include that the remote terminal and the relay have established an RRC connection, and the relay has established a Uu connection. In some embodiments, it may also be disregarded whether a Uu connection is established by the relay.

In the case that the remote terminal is in the idle state or the inactive state, the connection of the relay may be that the remote terminal is still connected to the relay after the remote terminal is released to the idle state or the inactive state by the network side device.

In this embodiment, the remote terminal may be supported to perform cell selection or reselection evaluation in various states.

In the embodiment of the application, the remote terminal performs the evaluation of cell selection or reselection in the first state, wherein the remote terminal has completed the selection or reselection of the relay in the first state or has connected the relay in the first state. Since the remote terminal can perform the evaluation of cell selection or reselection in the above-described first state, the communication reliability of the terminal can be improved.

Referring to fig. 3, fig. 3 is a flowchart of another cell evaluation method according to an embodiment of the present application, as shown in fig. 3, including the following steps:

Step 301, in the case that a relay is already connected to a remote terminal, the relay performs an evaluation of cell selection or reselection;

step 302, in the case that the relay determines that the condition of cell selection or reselection is satisfied, the relay performs cell selection or reselection;

The above-described evaluation of the relay performing cell selection or reselection may be that the relay performs the evaluation of cell selection or reselection based on the system information and the measurement result acquired by the relay.

In this embodiment, since the remote terminal is informed that the relay has performed cell selection or reselection after performing cell selection or reselection, it is possible to perform the remote terminal and relay as a whole, and select or reselect to another cell, so as to improve the communication reliability of the remote terminal.

The performing of the cell selection or reselection may be performed after receiving the confirmation of the remote terminal, and the confirmation of the remote terminal may be received before performing the cell selection or reselection. Since the cell selection or reselection is performed after the confirmation of the remote terminal is received, the remote terminal and the relay can be performed as a whole, and the cell is selected or reselected to another cell, so that the communication reliability of the remote terminal is improved.

As an alternative embodiment, after the step of performing the evaluation of cell selection or reselection by the relay, the method further comprises at least one of:

the relay reserves a unicast link between the relay and the remote terminal;

The relay informs the remote terminal of the identity of the relay selected or reselected cell.

Wherein, the identification of the cell may include at least one of the following:

PCI, frequency point information, NCI, NCGI.

In this embodiment, the relay reserves the unicast link between the relay and the remote terminal, so that the communication reliability of the remote terminal can be improved.

In addition, the relay informs the remote terminal of the identification of the relay selected or reselected cell, so that the remote terminal obtains the identification of the relay selected or reselected cell, and the remote terminal can use the identification to perform corresponding operation so as to improve the operation performance of the remote terminal.

As an alternative embodiment, after the step of performing the evaluation of cell selection or reselection by the relay, the method further comprises:

The relay sends a request message to the remote terminal, wherein the request message is used for requesting the remote terminal to confirm whether to execute a cell selection or reselection process;

The relay performing cell selection or reselection in a case where the relay determines that a condition for cell selection or reselection is satisfied, including:

in the case where the relay determines that the condition for cell selection or reselection is satisfied and the remote terminal confirms that the cell selection or reselection procedure is performed, the relay performs cell selection or reselection.

The request message may be sent to the remote terminal prior to performing step 302.

If the remote terminal replies to the relay with an acknowledgement, step 302 is performed.

In this embodiment, since the remote terminal is informed that the relay has performed cell selection or reselection after performing cell selection or reselection, or the performing cell selection or reselection is performed after receiving the acknowledgement from the remote terminal, it is possible to perform the remote terminal and relay as a whole, and select or reselect to another cell, so as to improve the communication reliability of the remote terminal.

The following illustrates, by means of a plurality of embodiments, a cell evaluation method provided by an embodiment of the present application:

embodiment one:

In this embodiment, the remote terminal performs cell selection evaluation on the direct link and directly measures the RSRP (or RSRQ) of the own cell and/or the RSRP (RSRQ) of the neighboring cell by way of example:

the remote terminal performs a subsequent operation when at least one of the following conditions is satisfied:

The remote terminal is within the overlay;

the remote terminal can acquire the system information related to cell selection or reselection;

Wherein, the subsequent operations may include:

the remote terminal performs an evaluation of cell selection or reselection based on system information (e.g., SIB2, SIB3, SIB4, SIB5, etc.) received by the direct link for cell selection or reselection, wherein the evaluation may include determining whether the cell is barred from attachment or access, and the remote terminal directly measures RSRP (or RSRQ) of the own cell and/or neighbor cell on the direct link, and evaluates whether the relevant measurement result satisfies a condition of cell selection or reselection.

When the conditions of cell selection or reselection are satisfied, the remote terminal performs one of the following actions:

Based on the terminal implementation, a decision is made whether to perform cell selection or reselection, or to continue to be under the indirect link of the relay.

Cell selection or reselection is performed and resides directly on the direct link. Alternatively, the remote terminal may perform at least one of the following actions:

informing the relay that cell selection or reselection is performed by itself;

Triggering a unicast link between the release and the relay;

If the new cell is in a different TA or RNA than the serving cell to which the relay is connected, triggering a corresponding TAU or RNAU procedure;

If the selected or reselected cell does not belong to the TA or RNA of the remote terminal, a corresponding TAU or RNAU procedure is triggered.

Embodiment two:

the embodiment illustrates the evaluation of cell selection or reselection by the remote terminal based on the system information forwarded by the relay:

The remote terminal obtains parameters related to cell selection or reselection evaluation based on relay forwarding system information, and directly measures the RSRP (or RSRQ) of the cell and/or the RSRP (or RSRQ) of the neighbor cell;

The remote terminal is out of coverage;

The remote terminal cannot obtain system information related to cell selection or reselection from the direct link.

The subsequent operations described above may include:

the remote terminal performs an evaluation of cell selection or reselection based on relay-forwarded system information (e.g., SIB2, SIB3, SIB4, SIB5, etc.) for cell selection or reselection (where the evaluation may include determining whether a cell is barred from attachment or access), and the remote terminal directly measures RSRP (or RSRQ) of the own cell and/or neighbor cells on a direct link, and evaluates whether the relevant measurement results satisfy a condition of cell selection or reselection.

informing the relay that cell selection or reselection is performed by itself

Unicast link between trigger release and relay

If the selected or reselected cell does not belong to the TA or RNA of the remote terminal, triggering a corresponding TAU or RNAU procedure

The remote terminal obtains parameters related to cell selection or reselection evaluation based on the system information forwarded by the relay, and judges whether corresponding conditions are met based on the RSRP (or RSRQ) of the own cell and/or the RSRP (or RSRQ) of the neighbor cell forwarded by the relay.

At this time, the remote terminal performs an evaluation of cell selection or reselection (wherein the evaluation may include determining whether the cell is prohibited from being attached or accessed) based on the relay-forwarded system information (such as SIB2, SIB3, SIB4, SIB5, etc.) for cell selection or reselection, and evaluates whether the relevant measurement result satisfies the condition of cell selection or reselection based on the relay-forwarded RSRP (or RSRQ) of the own cell and/or the RSRP (or RSRQ) of the neighboring cell. In this case, there may be three methods:

method 1:

informing the relay that cell selection or reselection is performed by itself;

Triggering a unicast link between the release and the relay;

Method 2:

Informing the relay to reselect the cell;

And transmitting the target cell identifier to the relay for cell reselection, wherein the cell identifier can comprise at least one of the following components:

PCI, frequency point information, NCI, NCGI.

Not releasing unicast links with relay

At this time, the remote terminal and the relay perform "group cell reselection" similar to "group handover", that is, the remote terminal and the relay as a whole reselect to another cell satisfying the condition.

Method 3:

Triggering a Relay reselection;

In the relay reselection process, the remote terminal knows the cell to which the relay belongs through a discovery message or other messages, and selects the service cell identifier as the relay of the target neighbor cell.

Embodiment III:

in this embodiment, the relay performs evaluation of cell selection or reselection based on the system information related to cell selection or reselection received by the direct link, and the relay directly measures RSRP (or RSRQ) of the own cell and/or neighboring cells on the direct link

At this time, the relay performs an evaluation of cell selection or reselection (wherein the evaluation may include determining whether the cell is barred from attachment or access) based on system information (e.g., SIB2, SIB3, SIB4, SIB5, etc.) received by the direct link for cell selection or reselection, and the relay directly measures RSRP (or RSRQ) of the own cell and/or neighbor cell on the direct link

When the conditions for cell selection or reselection are met, the relay performs one of the following actions:

Cell selection or reselection is performed directly.

And sending request information to the remote terminal, and inquiring whether to execute cell selection or reselection process. If the remote terminal replies with an acknowledgement, optionally, the relay needs to perform at least one of the following actions:

the cell selection or reselection is performed directly as described above.

Wherein, in case of directly performing cell selection or reselection, optionally, the relay may perform at least one of the following actions:

notifying the remote terminal of performing cell selection or reselection by itself;

the unicast link between the relay and the relay is not released;

The cell ID of the cell after the remote terminal reselects by itself is notified, and the cell ID can comprise at least one of PCI, frequency point information, NCI and NCGI.

Wherein, the actions of the remote terminal of all the schemes in the three embodiments can occur in at least one of the following stages:

after the remote terminal completes the relay selection or reselection;

After the remote terminal establishes a PC5-RRC connection with the relay;

The remote terminal establishes a PC5-RRC connection with the relay, and after the relay establishes Uu connection;

after the remote terminal is released to the IDLE/INACTIVE state by the network side device, the remote terminal is still connected with the relay.

The embodiment of the application can be realized as follows:

The remote terminal judges whether the system information related to the cell selection or reselection can be received on a direct link (such as based on the signal quality condition), if so, the cell selection or reselection evaluation is carried out based on the parameters in the directly received system information, and if not, the cell selection or reselection is carried out based on the parameters in the relay-forwarded system information;

All cell selection reselection performed by the remote terminal after relay selection is required to be completed, the remote terminal is notified and the PC5-RRC connection is possibly released;

The remote terminal evaluates based on the relay-forwarded cell selection or reselection related system message and the relay-forwarded RSRP (or RSRQ) of the own cell and/or the neighbor cell, and if the conditions are met, the remote terminal triggers the cell reselection of the group, and the remote terminal reselects to a new cell together with the relay;

The remote terminal evaluates based on the relay-forwarded cell selection or reselection related system message and the relay-forwarded RSRP (or RSRQ) of the own cell and/or the neighbor cell, and if the conditions are met, the remote terminal triggers relay reselection, and reselects to the target neighbor cell or the neighbor cell of the service cell identifier;

The relay evaluates based on the system message related to cell selection or reselection and the RSRP (or RSRQ) of the own cell and/or neighbor cells measured by itself, and if the condition is satisfied, the relay and the remote terminal together reselect to the new target cell. Alternatively, it may be performed after requesting the remote terminal and confirming.

By the embodiment of the application, the remote terminal can normally execute the evaluation of cell selection reselection under the condition of being connected to the relay.

Referring to fig. 4, fig. 4 is a block diagram of a cell evaluation apparatus according to an embodiment of the present application, where a remote terminal includes the apparatus, as shown in fig. 4, including:

a first execution module 401 that performs an evaluation of cell selection or reselection in a first state;

Optionally, the performing the evaluation of cell selection or reselection includes:

The remote terminal performs cell selection or reselection evaluation based on a direct link, or

The remote terminal performs an evaluation of cell selection or reselection based on an indirect link, or

the remote terminal is in the coverage area of the cell;

the remote terminal is out of the coverage area of the cell;

Optionally, the apparatus further includes:

a first camping module for continuing camping on the indirect link between the remote terminal and the relay, or in case the remote terminal determines that the cell selection or reselection condition is satisfied

A second camping module, configured to perform cell selection or reselection, camping on the direct link, and performing at least one of the following if the remote terminal determines that a condition for cell selection or reselection is satisfied:

Triggering release of a unicast link between the remote terminal and the relay;

triggering a corresponding tracking area update TAU or radio access network notification area update RNAU process under the condition that the selected or reselected cell and the service cell connected by the relay are in different tracking areas TA or radio access network notification areas RNAs;

Optionally, the apparatus further includes:

and the second execution module is used for executing at least one of the following when the remote terminal determines that the condition of cell selection or reselection is met:

Notifying the relay to select or reselect a cell;

reserving a unicast link between the remote terminal and the relay;

optionally, the apparatus further includes:

a third execution module, configured to execute at least one of the following when the remote terminal determines that a condition of cell selection or reselection is satisfied:

Optionally, the apparatus further includes:

an evaluation module, configured to perform an evaluation of relay selection or reselection in a second state, and not perform an evaluation of cell selection or reselection, where the second state includes at least one of:

the remote terminal is out of the coverage area of the cell;

Optionally, in the first state, the remote terminal having connected a relay includes at least one of:

The remote terminal and the relay have established a Radio Resource Control (RRC) connection;

Optionally, the remote terminal has established an RRC connection with the relay, including:

The remote terminal has established an RRC connection with the relay and the relay has established a Uu connection.

The cell evaluation device in the embodiment of the application can improve the communication reliability of the terminal.

The information transmission device in the embodiment of the application can be a device, a device with an operating system or an electronic device, and also can be a component, an integrated circuit or a chip in a terminal. The apparatus or electronic device may be a mobile terminal or a non-mobile terminal. By way of example, mobile terminals may include, but are not limited to, the types of terminals 11 listed above, and non-mobile terminals may be servers, network attached storage (Network Attached Storage, NAS), personal computers (personal computer, PCs), televisions (TVs), teller machines, self-service machines, etc., and embodiments of the present application are not limited in particular.

The information transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Referring to fig. 5, fig. 5 is a block diagram of a cell evaluation apparatus according to an embodiment of the present application, where a relay includes the apparatus, as shown in fig. 5, including:

A first execution module 501, configured to execute an evaluation of cell selection or reselection in a case where the relay and the remote terminal are already connected;

a second execution module 502, configured to execute cell selection or reselection when the relay determines that a condition for cell selection or reselection is satisfied;

Optionally, the apparatus further comprises at least one of:

a reservation module, configured to reserve a unicast link between the relay and the remote terminal;

And the notification module is used for notifying the remote terminal of the identification of the relay selected or reselected cell.

Optionally, the apparatus further includes:

A sending module, configured to send a request message to the remote terminal, where the request message is used to request the remote terminal to confirm whether to perform a cell selection or reselection procedure;

The second execution module 502 is configured to, in a case where the relay determines that the condition for cell selection or reselection is satisfied and the remote terminal confirms that the cell selection or reselection procedure is performed, perform cell selection or reselection by the relay.

The information transmission device in the embodiment of the application can be a device, a device with an operating system or an electronic device, and also can be a component, an integrated circuit or a chip in relay.

Optionally, as shown in fig. 6, the embodiment of the present application further provides a communication device 600, including a processor 601, a memory 602, and a program or an instruction stored in the memory 602 and capable of running on the processor 601, where, for example, the communication device 600 is a remote terminal, the program or the instruction is executed by the processor 601 to implement each procedure of the above-mentioned cell evaluation method embodiment on the remote terminal side, and the same technical effects can be achieved. For example, when the communication device 600 is a relay, the program or the instruction, when executed by the processor 601, implements the respective procedures of the above-described embodiment of the cell evaluation method on the relay side, and the same technical effects can be achieved.

The embodiment of the application also provides a terminal which is a far-end terminal and comprises a processor and a communication interface, wherein the processor or the communication interface is used for executing the evaluation of cell selection or reselection in a first state;

This embodiment corresponds to the above method embodiment, and each implementation procedure and implementation manner of the above method embodiment are applicable to this embodiment, and the same technical effect can be achieved. Specifically, fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 700 includes, but is not limited to, at least some of the components of a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.

Those skilled in the art will appreciate that the terminal 700 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 710 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 2 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 704 may include a graphics processor (Graphics Processing Unit, GPU) 7041 and a microphone 7042, with the graphics processor 7041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 701 receives downlink data from the network side device and processes the downlink data with the processor 710, and in addition, sends uplink data to the network side device. Typically, the radio unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions and various data. The memory 709 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 709 may include a high-speed random access Memory, and may also include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable EPROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

Processor 710 may include one or more processing units and, optionally, processor 710 may integrate an application processor that primarily processes operating systems, user interfaces, and applications or instructions, and a modem processor that primarily processes wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 710.

Wherein the radio frequency unit 701 or the processor 710 is configured to perform an evaluation of cell selection or reselection in the first state;

performing an evaluation of cell selection or reselection based on the direct link, or

Performing an evaluation of cell selection or reselection based on an indirect link, or

The evaluation of cell selection or reselection is performed based on the direct link and the indirect link.

Optionally, the performing the evaluation of cell selection or reselection based on the direct link includes:

and performing cell selection or reselection evaluation based on first system information and a first measurement result, wherein the first system information is system information received by the remote terminal based on a direct link, and the first measurement result is measurement result of the remote terminal based on direct link measurement.

Optionally, the performing the evaluation of cell selection or reselection based on the first system information and the first measurement result includes:

performing an evaluation of cell selection or reselection based on the first system information and the first measurement result under a first condition, wherein the first condition comprises at least one of:

the remote terminal is in the coverage area of the cell;

Optionally, the performing the evaluation of cell selection or reselection based on the indirect link includes:

And performing cell selection or reselection evaluation based on second system information and a second measurement result, wherein the second system information is the relay forwarding system information acquired by the remote terminal based on an indirect link, and the second measurement result is the measurement result of the relay measurement acquired by the remote terminal based on an indirect link.

Optionally, the performing the evaluation of cell selection or reselection based on the second system information and the second measurement result includes:

Performing an evaluation of cell selection or reselection based on the second system information and the second measurement result under a second condition, wherein the second condition comprises at least one of:

the remote terminal is out of the coverage area of the cell;

Optionally, the performing the evaluation of cell selection or reselection based on the direct link and the indirect link includes:

And performing cell selection or reselection evaluation based on third system information and third measurement results, wherein the third system information is the relay forwarding system information acquired by the remote terminal based on an indirect link, and the third measurement results are measurement results of the remote terminal based on direct link measurement.

Optionally, the performing the evaluation of cell selection or reselection based on the third system information and the third measurement result includes:

Performing an evaluation of cell selection or reselection based on third system information and third measurement results under third conditions, wherein the third conditions comprise at least one of:

the remote terminal is out of the coverage area of the cell;

Optionally, the radio frequency unit 701 or the processor 710 is further configured to:

In case the remote terminal determines that the conditions for cell selection or reselection are met, continuing to camp on the indirect link of the remote terminal and the relay, or

In case the remote terminal determines that a condition for cell selection or reselection is fulfilled, performing cell selection or reselection, camping on the direct link, and performing at least one of:

Triggering release of a unicast link between the remote terminal and the relay;

Notifying the relay to select or reselect a cell;

reserving a unicast link between the remote terminal and the relay;

the remote terminal is out of the coverage area of the cell;

The terminal in the embodiment of the application can improve the communication reliability of the terminal.

Specifically, the terminal according to the embodiment of the present invention further includes instructions or programs stored in the memory 709 and capable of running on the processor 710, and the processor 710 calls the instructions or programs in the memory 709 to execute the method executed by each module shown in fig. 4, and achieves the same technical effects, so that repetition is avoided and therefore will not be repeated herein.

The embodiment of the application also provides a relay, which comprises a processor and a communication interface, wherein the communication interface is used for:

This embodiment corresponds to the above method embodiment, and each implementation procedure and implementation manner of the above method embodiment are applicable to this embodiment, and the same technical effect can be achieved. Specifically, fig. 8 is a schematic diagram of a hardware structure of a relay for implementing an embodiment of the present application.

The relay 800 includes, but is not limited to, at least some of the components of a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit XXX, an interface unit 808, a memory 809, and a processor 810.

Those skilled in the art will appreciate that the relay 800 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 810 by a power management system to perform functions such as managing charging, discharging, and power consumption by the power management system. The relay structure shown in fig. 2 does not constitute a limitation of a relay, and the relay may include more or less components than illustrated, or may combine certain components, or may be arranged in different components, which are not described herein.

It should be appreciated that in embodiments of the present application, the input unit 804 may include a graphics processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042, with the graphics processor 8041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit XXX includes a touch panel XXX1 and other input devices XXX2. Touch panel XXX1, also referred to as a touch screen. The touch panel XXX1 may include two parts, a touch detection device and a touch controller. Other input devices XXX2 may include, but are not limited to, physical keyboards, function keys (e.g., volume control keys, switch keys, etc.), trackballs, mice, joysticks, and so forth, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 801 receives downlink data from the network side device and processes the downlink data with the processor 810, and in addition, sends uplink data to the network side device. In general, the radio frequency unit 801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 809 may be used to store software programs or instructions and various data. The memory 809 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 809 may include a high-speed random access Memory, and may also include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable EPROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

Processor 810 may include one or more processing units, and alternatively, processor 810 may integrate an application processor that primarily processes operating systems, user interfaces, and application programs or instructions, and a modem processor that primarily processes wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 810.

Wherein the radio frequency unit 801 or the processor 810 is configured to perform an evaluation of cell selection or reselection in case the relay is already connected to the remote terminal;

Optionally, after the relay performs the evaluation of cell selection or reselection, the radio frequency unit 801 or the processor 810 is further configured to perform at least one of the following:

Reserving a unicast link between the relay and the remote terminal;

and notifying the remote terminal of the identification of the relay selected or reselected cell.

Optionally, after the relay performs the evaluation of cell selection or reselection, the radio frequency unit 801 is further configured to:

transmitting a request message to the remote terminal, where the request message is used to request the remote terminal to confirm whether to execute a cell selection or reselection process;

the performing cell selection or reselection in a case where the relay determines that a condition for cell selection or reselection is satisfied, includes:

In case the relay determines that the condition of cell selection or reselection is satisfied and the remote terminal confirms that the cell selection or reselection procedure is performed, the cell selection or reselection is performed.

The relay in the embodiment of the application can improve the communication reliability of the terminal.

Specifically, the relay according to the embodiment of the present invention further includes instructions or programs stored in the memory 809 and capable of running on the processor 810, and the processor 810 invokes the instructions or programs in the memory 809 to execute the method executed by each module shown in fig. 5, so as to achieve the same technical effect, and thus, for avoiding repetition, the description is omitted herein.

In the embodiment corresponding to fig. 8, the relay is taken as a relay terminal for illustration, and the embodiment of the present application is not limited to the specific structure of the relay, for example, the relay may be a dedicated relay device or a relay node.

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above embodiment of the cell evaluation method, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the processes of the embodiment of the cell evaluation method, and can achieve the same technical effects, so that repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiment of the application also provides a computer program product stored in a readable storage medium, and the computer program product is executed by at least one processor to realize each process of the above embodiment of the cell evaluation method, and can achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.

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. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

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. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer 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 mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application 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 application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method for cell evaluation, comprising:

Wherein in the first state, the remote terminal has completed the selection or reselection of the relay, or in the first state, the remote terminal has connected the relay;

the method further comprises the steps of:

In the case that the remote terminal determines that the cell selection or reselection condition is satisfied, the remote terminal performs cell selection or reselection, resides on a direct link, and performs at least one of:

Triggering release of a unicast link between the remote terminal and the relay;

2. The method of claim 1, wherein the performing an evaluation of cell selection or reselection comprises:

3. The method of claim 2, wherein the remote terminal performs the evaluation of cell selection or reselection based on a direct link, comprising:

4. The method of claim 3, wherein the remote terminal performing the evaluation of cell selection or reselection based on the first system information and the first measurement result comprises:

the remote terminal is in the coverage area of the cell;

5. The method of claim 2, wherein the remote terminal performs the evaluation of cell selection or reselection based on an indirect link, comprising:

6. The method of claim 5, wherein the remote terminal performing the evaluation of cell selection or reselection based on the second system information and the second measurement result comprises:

the remote terminal is out of the coverage area of the cell;

7. The method of claim 2, wherein the remote terminal performs the evaluation of cell selection or reselection based on direct links and indirect links, comprising:

8. The method of claim 7, wherein the remote terminal performing the evaluation of cell selection or reselection based on third system information and third measurement results comprises:

the remote terminal is out of the coverage area of the cell;

9. The method of claim 2, 5 or 6, wherein the method further comprises:

Notifying the relay to select or reselect a cell;

reserving a unicast link between the remote terminal and the relay;

10. The method of claim 2, 5 or 6, wherein the method further comprises:

11. The method of any one of claims 1 to 8, wherein the method further comprises:

the remote terminal is out of the coverage area of the cell;

12. The method of any of claims 1 to 8, wherein the remote terminal having connected a relay in the first state comprises at least one of:

13. The method of claim 12, wherein the remote terminal has established an RRC connection with the relay, comprising:

14. A method for cell evaluation, comprising:

Wherein the relay is informed to the remote terminal that the cell selection or reselection has been performed after the cell selection or reselection is performed, or after the cell selection or reselection is performed after the confirmation of the remote terminal is received;

wherein the remote terminal continues to reside on an indirect link between the remote terminal and the relay, or, if the remote terminal determines that the cell selection or reselection condition is satisfied

And under the condition that the remote terminal determines that the condition of cell selection or reselection is met, the remote terminal executes cell selection or reselection, resides on a direct link and executes at least one of the following:

Triggering release of a unicast link between the remote terminal and the relay;

15. The method of claim 14, wherein after the step of the relay performing an evaluation of cell selection or reselection, the method further comprises at least one of:

the relay reserves a unicast link between the relay and the remote terminal;

16. The method of claim 14, wherein after the step of the relay performing an evaluation of cell selection or reselection, the method further comprises:

17. A cell evaluation apparatus, a remote terminal comprising said apparatus, comprising:

The apparatus further comprises:

A second camping module, configured to perform cell selection or reselection, camping on a direct link, and performing at least one of the following if the remote terminal determines that a condition for cell selection or reselection is satisfied:

Triggering release of a unicast link between the remote terminal and the relay;

18. The apparatus of claim 17, wherein the performing an evaluation of cell selection or reselection comprises:

19. The apparatus of claim 18, wherein the remote terminal performs the evaluation of cell selection or reselection based on a direct link, comprising:

20. The apparatus of claim 19, wherein the remote terminal performing an evaluation of cell selection or reselection based on the first system information and the first measurement result comprises:

the remote terminal is in the coverage area of the cell;

21. The apparatus of claim 18, wherein the remote terminal performs the evaluation of cell selection or reselection based on an indirect link, comprising:

22. The apparatus of claim 21, wherein the remote terminal performing an evaluation of cell selection or reselection based on second system information and second measurement results comprises:

the remote terminal is out of the coverage area of the cell;

23. The apparatus of claim 18, wherein the remote terminal performs the evaluation of cell selection or reselection based on direct links and indirect links, comprising:

24. The apparatus of claim 23, wherein the remote terminal performing an evaluation of cell selection or reselection based on third system information and third measurement results comprises:

the remote terminal is out of the coverage area of the cell;

25. The apparatus of claim 18, 21 or 22, wherein the apparatus further comprises:

Notifying the relay to select or reselect a cell;

reserving a unicast link between the remote terminal and the relay;

26. The apparatus of claim 18, 21 or 22, wherein the apparatus further comprises:

27. The apparatus according to any one of claims 17 to 23, wherein the apparatus further comprises:

an evaluation module, configured to perform relay selection or reselection evaluation by the remote terminal in a second state, and not perform cell selection or reselection evaluation, where the second state includes at least one of:

the remote terminal is out of the coverage area of the cell;

28. The apparatus of any of claims 17 to 23, wherein the remote terminal having connected a relay in the first state comprises at least one of:

29. The apparatus of claim 28, wherein the remote terminal has established an RRC connection with the relay, comprising:

30. A cell evaluation apparatus, a relay including the apparatus, comprising:

Triggering release of a unicast link between the remote terminal and the relay;

31. The apparatus of claim 30, wherein the apparatus further comprises at least one of:

32. The apparatus of claim 30, wherein the apparatus further comprises:

The second execution module is configured to execute cell selection or reselection when the relay determines that a condition for cell selection or reselection is satisfied, and the remote terminal confirms execution of a cell selection or reselection procedure.

33. A terminal, which is a remote terminal, comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, which program or instructions, when executed by the processor, implement the steps of the cell evaluation method according to any one of claims 1 to 13.

34. A relay comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor implements the steps of the cell evaluation method of any one of claims 14 to 16.

35. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implements the steps of the cell evaluation method according to any one of claims 1 to 13, or which, when executed by a processor, implements the steps of the cell evaluation method according to any one of claims 14 to 16.