CN115996406A - Timer maintenance method, device, equipment and storage medium - Google Patents

Abstract

Embodiments of the present application provide a timer maintenance method, device, device, and computer-readable storage medium, which relate to the technical field of communications. The method includes: obtaining duration information of a first timer configured by a base station for a first user equipment UE, the first UE accessing the network through a relay UE; controlling an RRC process according to a radio resource in the process of the first UE accessing the network Start the second timer and the first timer. In the method provided by the embodiment of the present application, for the first UE accessing the network through the relay UE, the corresponding second timer is started according to the radio resource control RRC process in the process of the first UE accessing the network and the base station sets the first UE The first timer configured by the UE, so as to prevent the remote UE from failing in the process of accessing the network (RRC establishment, recovery, reconstruction, reconfiguration) because the timer is too short.

Description

Timer maintenance method, device, equipment and storage medium

technical field

The present application relates to the technical field of communications, and in particular, the present application relates to a timer maintenance method, device, equipment, and computer-readable storage medium.

Background technique

In order to expand the network coverage, UE-to-NetworkRelay, a relay from user equipment (or terminal) to the network, is introduced. UE-to-Network Relay can be a terminal with a relay function. For UE-to-NetworkRelay, the interface between the relay and the network uses the Uu interface, and the interface between the relay and the remote UE (Remote UE) uses the direct communication interface (PC5).

In the existing mechanism, the UE will start the corresponding timer when it accesses the network (RRC establishment, recovery, re-establishment) or when a handover or path switching occurs, so that the UE completes the corresponding process within the specified time, otherwise it exits the process to avoid the UE Stay in an unstable state for a long time. Existing timers are all configured for transmission and processing delays of the Uu interface.

In the relay (relay) scenario, the remote UE accesses the network through the relay UE, and the remote UE also needs to complete access (RRC establishment, recovery, re-establishment) or handover, path switching and other operations within a certain period of time. Since the remote UE needs to establish a direct communication link (Sidelink, SL) unicast connection with the relay UE in some scenarios during these processes, and the relay UE may also be in the IDLE state or the INACTIVE state, the relay UE needs to Firstly establish a connection between itself and the network and enter the connected state. Furthermore, the signaling interaction between the remote UE and the network needs to be transmitted on the PC5 interface and the Uu interface, resulting in increased transmission and processing time. Therefore, the remote UE cannot successfully access the network (RRC establishment, restoration, reconstruction, reconfiguration) or path switching, path switching, etc. by using the existing mechanism.

Contents of the invention

The present application provides a timer maintenance method, device, equipment and computer-readable storage medium, which can solve at least one technical problem in the prior art.

In the first aspect, a timer maintenance method is provided, the method includes:

Obtaining the duration information of the first timer configured by the base station for the first user equipment UE, the first UE accessing the network through the relay UE;

Starting the second timer and the first timer according to a radio resource control (RRC) procedure during the first UE accessing the network.

In the second aspect, a timer maintenance method is provided, the method includes:

Acquiring a timing increment configured by the base station for the first user equipment UE, the first UE accessing the network through the relay UE;

Configuring the duration of the second timer corresponding to the RRC process in the process of the first UE accessing the network according to the timing increment;

Starting the corresponding second timer according to the RRC procedure in the process of the first UE accessing the network.

In a third aspect, a method for maintaining a timer is provided, and the method includes:

Acquiring duration information of a first timer configured by the base station for a first user equipment UE, where the first UE accesses the network through a first relay UE;

If the first UE is handed over from the first relay UE to the second relay UE, start a third timer corresponding to a path switching operation and the first timer.

In a fourth aspect, a method for maintaining a timer is provided, and the method includes:

Acquiring a timing increment configured by the base station for the first user equipment UE, the first UE accessing the network through the first relay UE;

configuring the duration of a third timer corresponding to the first UE path switching operation according to the timing increment;

If the first UE is handed over from the first relay UE to a second relay UE, start the third timer.

In the fifth aspect, a method for maintaining a timer is provided, and the method includes:

Configuring a timing increment or a duration of a first timer for the first user equipment UE, wherein the first UE accesses the network through a relay UE;

Broadcasting the timing increment or the duration information of the first timer through system information; or,

Informing the first UE of path switching through dedicated signaling, where the dedicated signaling carries the timing increment or the duration information of the first timer.

In a sixth aspect, an apparatus for maintaining a timer is provided, which is applied to a first user equipment UE, and the apparatus includes:

An acquiring module, configured to acquire duration information of a first timer configured by the base station for a first user equipment UE, the first UE accessing the network through a relay UE;

An execution module, configured to start a second timer and the first timer according to a radio resource control (RRC) procedure during the first UE accessing the network.

In a seventh aspect, a timer maintenance device is provided, which is applied to a first user equipment UE, and the device includes:

An obtaining module, configured to obtain a timing increment configured by the base station for the first user equipment UE, the first UE accessing the network through the relay UE;

The first configuration module is configured to configure the duration of the second timer corresponding to the RRC process in the process of the first UE accessing the network according to the timing increment;

An executing module, configured to start a corresponding second timer according to an RRC procedure during the first UE accessing the network.

In an eighth aspect, an apparatus for maintaining a timer is provided, which is applied to a first user equipment UE, and the apparatus includes:

An obtaining module, configured to obtain duration information of a first timer configured by the base station for a first user equipment UE, the first UE accessing the network through a first relay UE;

An executing module, configured to start a third timer corresponding to a path switching operation and the first timer if the first UE is handed over from the first relay UE to the second relay UE.

In the ninth aspect, a timer maintenance device is provided, which is applied to the first user equipment UE, and the device includes:

An obtaining module, configured to obtain a timing increment configured by the base station for the first user equipment UE, the first UE accessing the network through the first relay UE;

A first configuration module, configured to configure the duration of a third timer corresponding to the first UE path switching operation according to the timing increment;

An executing module, configured to start the third timer if the first UE is handed over from the first relay UE to a second relay UE.

In a tenth aspect, a timer maintenance device is provided, which is applied to base station equipment, and the device includes:

The second configuration module is configured to configure a timing increment or a duration of the first timer for the first user equipment UE, wherein the first UE accesses the network through a relay UE;

A sending module, configured to broadcast the timing increment or the duration information of the first timer through system information; or,

Informing the first UE of path switching through dedicated signaling, where the dedicated signaling carries the timing increment or the duration information of the first timer.

In an eleventh aspect, a user equipment is provided, and the equipment includes:

memory for storing computer programs;

a transceiver, configured to send and receive data under the control of the processor;

The processor is configured to read the computer program in the memory and execute it to implement the timer maintenance method shown in the first aspect, or the second aspect, or the third aspect, or the fourth aspect of the present application.

In a twelfth aspect, a base station device is provided, which includes:

memory for storing computer programs;

a transceiver, configured to send and receive data under the control of the processor;

The processor is configured to read the computer program in the memory and implement the timer maintenance method shown in the fifth aspect of the present application during execution.

In a thirteenth aspect, a processor-readable storage medium is provided, the processor-readable storage medium stores a computer program, and the computer program is used to enable a processor to implement aspects 1 to 45 of the present application when executed The timer maintenance method shown in either item.

The beneficial effects brought by the technical solution provided by the application are:

For the first UE that accesses the network through the relay UE, start the corresponding second timer and the first timing configured by the base station for the first UE according to different radio resource control RRC procedures in the process of the first UE accessing the network To prevent the remote UE from failing in the process of accessing the network (RRC establishment, recovery, reconstruction, reconfiguration) due to too short a timer.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments of the present application.

FIG. 1 is a schematic diagram of cellular network communication;

Fig. 2 is a schematic diagram of direct communication;

Fig. 3 is a schematic diagram of UE-to-Network Relay communication;

FIG. 4 is a schematic flowchart of a timer maintenance method provided in an embodiment of the present application;

FIG. 5 is a schematic flowchart of a timer maintenance method provided by another embodiment of the present application;

FIG. 6 is a schematic flowchart of a timer maintenance method provided by another embodiment of the present application;

FIG. 7 is a schematic flowchart of a timer maintenance method provided by another embodiment of the present application;

FIG. 8 is a schematic diagram of a timer maintenance method provided by another embodiment of the present application;

FIG. 9 is an interactive schematic diagram of a timer maintenance method provided in an embodiment of the present application;

FIG. 10 is an interactive schematic diagram of a timer maintenance method provided by another embodiment of the present application;

FIG. 11 is an interactive schematic diagram of a timer maintenance method provided by another embodiment of the present application;

FIG. 12 is an interactive schematic diagram of a timer maintenance method provided by another embodiment of the present application;

FIG. 13 is an interactive schematic diagram of a timer maintenance method provided by another embodiment of the present application;

FIG. 14 is an interactive schematic diagram of a timer maintenance method provided by another embodiment of the present application;

FIG. 15 is a schematic structural diagram of a user equipment provided in an embodiment of the present application;

FIG. 16 is a schematic structural diagram of a base station device provided in an embodiment of the present application.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and should not be construed as limiting the present invention.

Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The expression "and/or" used herein includes all or any elements and all combinations of one or more associated listed items.

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

The technical solutions provided by the embodiments of the present application can be applied to various systems, especially 5G systems. For example, the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio business (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, advanced long-term Evolution (long term evolution advanced, LTE-A) system, universal mobile telecommunications system (UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) system, 5G new air interface (New Radio, NR) system, etc. . These various systems include terminal equipment and network side equipment. The system may also include a core network part, such as an evolved packet system (Evloved Packet System, EPS), a 5G system (5GS), and the like.

First, introduce and explain several terms involved in this application:

The terminal device involved in this embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal equipment may be different. For example, in a 5G system, the terminal equipment may be called User Equipment (User Equipment, UE). The wireless terminal device can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network. For example, Personal Communication Service (PCS) phone, cordless phone, Session Initiated Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant, PDA) and other devices. The wireless terminal equipment may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, Remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), and user device (user device) are not limited in this embodiment of the application.

The network side device involved in this embodiment of the present application may be a base station, and the base station may include multiple cells that provide services for terminals. Depending on the specific application, the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network-side device can be used to exchange received air frames and Internet Protocol (Internet Protocol, IP) packets, and act as a router between the wireless terminal device and the rest of the access network, where the rest of the access network can include Internet Protocol (IP) communication network. The network side device can also coordinate attribute management of the air interface.

For example, the network-side device involved in the embodiment of the present application may be a Global System for Mobile communications (Global System for Mobile communications, GSM) or a network-side device (Base Transceiver Station) in Code Division Multiple Access (CDMA). BTS), it can also be the network side device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be the evolution type in the long term evolution (long term evolution, LTE) system The network side equipment (evolutional Node B, eNB or e-NodeB), the 5G base station (gNB) in the 5G network architecture (next generation system), can also be the home evolution base station (Home evolved Node B, HeNB), the relay node ( relay node), home base station (femto), pico base station (pico), etc., are not limited in this embodiment of the present application. In some network structures, the network side device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

One or more antennas can be used between the network side device and the terminal device for Multi Input Multi Output (MIMO) transmission, and MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or Multi User MIMO (Multiple User MIMO, MU-MIMO). According to the shape and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission, etc.

Secondly, the related technologies involved in the embodiments of the present application are described:

(1) Cellular network communication

As shown in Figure 1, the traditional wireless communication adopts the cellular network communication mode, that is, the terminal and the network side equipment transmit uplink and downlink data/control information through the Uu interface.

(2) Direct communication

As shown in FIG. 2 , direct communication refers to a manner in which adjacent terminals can perform data transmission through a direct communication link (also called Sidelink or PC5) within a short distance. The wireless interface corresponding to the Sidelink link is called a direct communication interface (also called a Sidelink interface or a PC5 interface).

(3) UE-to-Network Relay

In order to expand network coverage, consider introducing UE-to-Network Relay. UE-to-Network Relay The node as a relay (relay) itself may be a terminal with a relay function. As shown in Figure 3, for UE-to-NetworkRelay, the interface between the relay and the network uses the Uu interface, and the interface between the relay and the relayed UE (referred to as the remote UE) uses the direct communication interface (also known as Sidelink interface or PC5 interface). The link between the relay and the network may be called a backhaul link (Backhaul link) for the remote UE.

In the existing mechanism, the UE will start the corresponding timer when it accesses the network (RRC establishment, recovery, re-establishment) or when a handover or path switching occurs, so that the UE completes the corresponding process within the specified time, otherwise it exits the process to avoid the UE Stay in an unstable state for a long time. Existing timers are all configured for transmission and processing delays of the Uu interface.

In the relay scenario, the remote UE accesses the network through the relay UE, and the remote UE also needs to complete access (RRC establishment, recovery, re-establishment) or handover, path switching and other operations within a certain period of time. Since the remote UE needs to establish a SL unicast connection with the relay UE in some scenarios during these processes, and the relay UE may also be in the IDLE state or the INACTIVE state, the relay UE needs to establish its own connection with the network to enter In the connected state, the signaling interaction between the remote UE and the network needs to be transmitted on the PC5 interface and the Uu interface, thus increasing the transmission and processing time. Therefore, the remote UE cannot successfully access the network (RRC establishment, recovery, re-establishment) or path switching, path switching, etc. by using the existing mechanism.

Therefore, the embodiment of the present application provides a timer maintenance method when the remote UE accesses the network through the relay UE (RRC establishment, recovery, re-establishment) or performs operations such as handover and path switching in the relay scenario, so as to avoid remote The UE fails to access the network (RRC establishment, recovery, re-establishment) or path switching, path switching and other processes because the timer is too short.

The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below in conjunction with the accompanying drawings.

An embodiment of the present application provides a timer maintenance method, as shown in Figure 4, the method includes:

S101. Acquire duration information of a first timer configured by a base station for a first user equipment UE, where the first UE accesses the network through a relay UE;

S102. Start the second timer and the first timer according to the radio resource control (RRC) procedure in the process of the first UE accessing the network.

That is to say, in this embodiment, for the first UE that accesses the network through the relay UE (remote terminal or remote UE above), the base station can configure a dedicated timer for the first UE, so that the second When a UE accesses the network, it starts the corresponding second timer and the configured first timer based on the radio resource control RRC procedure.

In a possible implementation, S102 may include:

Starting a second timer corresponding to the RRC process and the first timer for different RRC processes in the network access process of the first UE.

In this embodiment, the RRC process includes but not limited to RRC establishment process, RRC recovery process, RRC reconstruction process, RRC reconfiguration completion process and other processes.

It should be noted that different RRC processes have corresponding timers, for example, the timer corresponding to the RRC establishment process is T300, the timer corresponding to the RRC recovery process is T319, and the timer corresponding to the RRC reestablishment process is T301.

In a possible implementation manner, the duration of the first timer is a plurality of durations respectively configured by the base station for the different RRC processes, or,

The duration of the first timer is a duration uniformly configured by the base station for the different RRC procedures.

It should be noted that, in this embodiment, the first timer configured by the base station for the first UE may be different first timers configured for different RRC processes, for example: the first timing configured for the RRC establishment process The first timer configured for the RRC establishment process is T300r, the first timer configured for the RRC establishment process is T319r, and the first timer configured for the RRC establishment process is T301r. It is also possible to configure a first timer for different RRC processes. For example, the first timer configured for processes such as RRC establishment process, RRC recovery process, and RRC reestablishment process is T401.

It should be understood that in this embodiment, T300r, T319r, T301r, T401, etc. are only examples for illustrating the technical solution of the embodiment of the present application, and do not constitute any limitation to the technical solution of the embodiment of the present application.

In another possible implementation manner, S102 may specifically include:

Start the first timer when the RRC process is triggered, and start the second timer after the first timer expires;

The method also includes:

S103. During the operation of the first timer or the second timer, a feedback message corresponding to the RRC process is received from the base station, and the first timer and the second timer are determined stop running;

or,

S104. During the running of the first timer or the second timer, no feedback message corresponding to the RRC process is received from the base station, the second timer expires, and the first UE Execute the second timer timeout operation.

In another possible implementation manner, S102 may specifically include:

Start the second timer when the RRC process is triggered, and start the first timer after the second timer expires;

The method also includes:

S105. During the operation of the first timer or the second timer, a feedback message corresponding to the RRC process is received from the base station, and the first timer and the second timer are determined stop running;

or,

S106. During the running of the first timer or the second timer, no feedback message corresponding to the RRC process is received from the base station, the first timer expires, and the first UE Execute the operation corresponding to the timeout of the second timer.

In each of the above embodiments, the first timer can be started before or after the second timer, and during the operation of one of the timers, if a relevant feedback message from the base station is received, the operation of the two timers is stopped; During the running of the two timers, if no relevant feedback message from the base station is received, after the two timers expire, the corresponding operation of the second timer expires.

Specifically, in this embodiment, for example: if the RRC process is an RRC establishment process, the second timer expires and the corresponding operation is the first UE to perform the corresponding operation of T300 timeout; if the RRC process is an RRC recovery process, the second timer The corresponding operation when the timer expires is that the first UE performs the corresponding operation of T319 timeout; if the RRC process is an RRC reestablishment process, the corresponding operation when the second timer expires is that the first UE performs the corresponding operation of T301 timeout.

That is to say, in the timer maintenance method provided by the embodiment of the present application, for the first UE that accesses the network through the relay UE, the corresponding The second timer and the first timer configured by the base station for the first UE, thereby preventing the remote UE from failing in accessing the network (RRC establishment, recovery, re-establishment, reconfiguration) and other processes due to the timer being too short.

The embodiment of the present application provides a timer maintenance method, as shown in Figure 5, the method includes:

S201. Acquire a timing increment configured by a base station for a first user equipment UE, where the first UE accesses the network through a relay UE;

S202. Configure the duration of the second timer corresponding to the RRC process in the process of the first UE accessing the network according to the timing increment;

S203. Start a corresponding second timer according to the RRC procedure in the process of the first UE accessing the network.

That is to say, in this embodiment, for the first UE that accesses the network through the relay UE (remote terminal or remote UE above), the base station can configure a timing increment for the first UE, so that the second When a UE accesses the network, configure and start a second timer corresponding to the radio resource control RRC process according to the configured timing increment. Wherein, the manner in which the first UE configures the second timer corresponding to the radio resource control RRC process according to the configured timing increment may include the following two methods:

The first way: for the remote UE accessing the network through the relay, the duration of the second timer is configured to be the sum of the original duration and the duration of the timing increment. For example, in the RRC establishment process, the original duration of the corresponding timer T300 is 300ms, and the duration of the timing increment is 1000ms, so the duration of the second timer is 1300ms.

The second method: configure two durations for the second timer, one duration is the original duration (for the UE directly connected to the base station), and the other duration is the sum of the original duration and the duration of the timing increment (for accessing the network through the relay remoteUE).

In a possible implementation manner, S202 may specifically include:

For different RRC procedures in the network access process of the first UE, the duration of the corresponding second timer is configured according to the timing increment.

In a possible implementation manner, the timing increment is a plurality of timing increments respectively configured by the base station for the different RRC processes, or,

The duration of the timing increment is a timing increment uniformly configured by the base station for the different RRC processes.

It should be noted that, in this embodiment, the first timer configured by the base station for the first UE may be configured with different timing increments for different RRC processes, for example: the timing increment configured for the RRC establishment process is 1000ms, the timing increment configured for the RRC establishment process is 600ms, the timing increment configured for the RRC establishment process is 1500ms, etc. It is also possible to configure a timing increment for different RRC processes, for example, the timing increment configured for processes such as the RRC establishment process, RRC recovery process, and RRC reconstruction process is 1000ms.

It should be understood that in this embodiment, 600 ms, 1000 ms, 1500 ms, etc. are just examples for illustrating the technical solution of the embodiment of the present application, and do not constitute any limitation to the technical solution of the embodiment of the present application.

In another possible implementation, the method further includes:

S204. During the operation of the second timer, receive a feedback message corresponding to the RRC process from the base station, and determine that the second timer stops running;

or,

S205. During the running of the second timer, no feedback message corresponding to the RRC process is received from the base station, the second timer times out, and the first UE performs the second timer timeout corresponding operate.

Specifically, in this embodiment, during the operation of the second timer, if a corresponding feedback message from the base station is received, the operation of the second timer is stopped; during the operation of the second timer, if no feedback message from the base station is received For related feedback messages, after the second timer expires, perform the corresponding operation when the second timer expires.

It should be noted that, for the specific content of the operation corresponding to the timeout of the second timer, reference may be made to the relevant content described in the embodiment shown in FIG. 4 , and details are not repeated here for the sake of concise description.

That is to say, in the timer maintenance method provided by the embodiment of the present application, for the first UE that accesses the network through the relay UE, configure the network access process of the first UE according to the timing increment configured by the base station for the first UE Different radio resources control the second timer corresponding to the RRC process and start it, so as to prevent the remote UE from failing in the process of accessing the network (RRC establishment, recovery, reconstruction, reconfiguration) because the timer is too short.

An embodiment of the present application provides a timer maintenance method, as shown in Figure 6, the method includes:

S301. Acquire duration information of a first timer configured by a base station for a first user equipment UE, where the first UE accesses the network through a relay UE;

S302. If the first UE is handed over from the first relay UE to the second relay UE, start a third timer corresponding to a path switching operation and the first timer.

That is to say, in this embodiment, for the first UE accessing the network through the first relay UE, if the first UE is to be handed over from the first relay UE to the second relay UE, the base station may be the first UE A dedicated timer is configured, so that the first UE starts the third timer corresponding to the path switching operation and the configured first timer when the path is switched.

In a possible implementation manner, S302 may specifically include:

Start the first timer, and start the third timer after the first timer expires;

The method also includes:

S303. During the running of the first timer or the third timer, receive a direct communication link SL establishment message from the second relay UE, and determine the first timer and the third timer The timer stops running, and sends a first feedback message to the base station;

or,

S304. During the running of the first timer or the third timer, no SL establishment message from the second relay UE is received, the third timer expires, and the second timer is sent to the base station feedback message.

In another possible implementation manner, S302 may specifically include:

Start the third timer, and start the first timer after the third timer expires;

The method also includes:

S305. During the running of the first timer or the third timer, receiving an SL establishment message from the second relay UE, and determining that the first timer and the third timer stop running , and sending a first feedback message to the base station;

or,

S306. During the running of the first timer or the third timer, no SL setup message from the second relay UE is received, the first timer expires, and the second timer is sent to the base station feedback message.

In each of the above embodiments, the first timer can be started before or after the third timer, and during the running of one of the timers, if the establishment of SL message from the second relay UE is received, the two timers are stopped run, and send a feedback message of handover success to the base station; during the running of the two timers, if no SL setup message from the second relay UE is received, after the two timers expire, send a feedback message of handover failure to the base station .

That is to say, in the timer maintenance method provided by the embodiment of the present application, for the first UE accessing the network through the first relay UE, if the first UE switches from the first relay UE to the second relay UE, The third timer corresponding to the path switching operation and the first timer configured by the base station for the first UE are started, so as to prevent the remote UE from failing in path switching and path switching because the timer is too short.

The embodiment of the present application provides a timer maintenance method, as shown in Figure 7, the method includes:

S401. Acquire a timing increment configured by a base station for a first user equipment UE, where the first UE accesses the network through a first relay UE;

S402. Configure the duration of a third timer corresponding to the first UE path switching operation according to the timing increment;

S403. If the first UE is switched from the first relay UE to the second relay UE, start the third timer.

That is to say, in this embodiment, for the first UE that accesses the network through the relay UE, if the first UE is to be handed over from the first relay UE to the second relay UE, the base station can configure A timing increment, so that the first UE starts a third timer corresponding to the path switching operation when the path is switched, where the duration of the third timer is the sum of the original duration and the duration of the timing increment. For example, the original duration of the timer T304 corresponding to the path switching operation is 200ms, and the duration of the timing increment is 150ms, so the duration of the third timer is 350ms.

It should be understood that in this embodiment, 150 ms is just an example for illustrating the technical solution of the embodiment of the present application, and does not constitute any limitation to the technical solution of the embodiment of the present application.

In a possible implementation, the method also includes:

S404. During the running period of the third timer, receive an SL establishment message from the second relay UE, determine that the third timer stops running, and send a first feedback message to the base station;

or,

S405. During the running of the third timer, no SL setup message from the second relay UE is received, the third timer expires, and a second feedback message is sent to the base station.

Specifically, in this embodiment, during the operation of the third timer, if the establishment of SL message from the second relay UE is received, the operation of the two timers is stopped, and a feedback message of successful handover is sent to the base station; During the running of the third timer, if no SL setup message from the second relay UE is received, after the third timer expires, a handover failure feedback message is sent to the base station.

That is to say, in the timer maintenance method provided by the embodiment of the present application, for the first UE accessing the network through the first relay UE, configure the first UE to perform path switching according to the timing increment configured by the base station for the first UE and start the corresponding third timer, so as to prevent the remote UE from failing in the process of path switching and path switching due to the short timer.

The embodiment of the present application provides a timer maintenance method, as shown in Figure 8, the method includes:

S501. Configure a timing increment or a duration of a first timer for a first user equipment UE, where the first UE accesses the network through a relay UE;

S502. Broadcast the timing increment or the duration information of the first timer through system information; or,

Informing the first UE of path switching through dedicated signaling, where the dedicated signaling carries the timing increment or the duration information of the first timer.

That is to say, in the timer maintenance method provided by the embodiment of the present application, for the first UE accessing the network through the relay UE, the base station can configure a dedicated timer for the first UE, or set a timer for the first UE. The configured timing increment or the duration information of the first timer is broadcast through the system information, so that the first UE can use it when performing the RRC process in the network access process, so as to prevent the remote UE from being connected due to the short timer The process of entering the network (RRC establishment, recovery, reconstruction, reconfiguration) and other processes fails.

Or, for the first UE that accesses the network through the relay UE, the base station may configure a dedicated timer for the first UE, or increase the timing for the first UE, and notify the first UE to switch the path through dedicated signaling. The dedicated signaling carries the configured timing increment or the duration information of the first timer, so that the first UE can use it when performing path switching, so as to prevent the remote UE from failing in path switching and path switching due to too short timer.

In a possible implementation manner, S501 may specifically include:

S5011. According to the different RRC procedures in the network access process of the first UE and the path switching operation, respectively configure a corresponding timing increment or a duration of a first timer for the first UE;

or,

S5012. For the different RRC processes in the network access process of the first UE, uniformly configure a timing increment or a duration of a first timer for the first UE, and,

S5013. For the path switching operation of the first UE, configure a timing increment or a duration of a first timer for the first UE.

It should be noted that, in this embodiment, the first timer configured by the base station for the first UE may be different first timers configured for different RRC processes, for example: the first timing configured for the RRC establishment process The first timer configured for the RRC establishment process is T300r, the first timer configured for the RRC establishment process is T301r, the first timer configured for the path switching operation is T304r, and so on. It is also possible to configure a first timer for different RRC processes, and configure another first timer for path switching operations. For example, the first timer configured for processes such as RRC establishment process, RRC recovery process, and RRC reconstruction process is T401; the first timer configured for the path switching operation is T402.

It should be understood that in this embodiment, T300r, T319r, T301r, T304r, T401, T402, etc. are just examples for illustrating the technical solution of the embodiment of the present application, and do not constitute any limitation to the technical solution of the embodiment of the present application.

In another possible implementation manner, if the path switching operation of the first UE is switching from the first relay UE to the second relay UE, the method further includes:

S503. Configure the second relay UE through dedicated signaling, and configure information related to the relay of the first UE for the second relay UE.

Specifically, in this embodiment, if the first UE is to be handed over from the first relay UE to the second relay UE, the base station needs to configure information related to the relay of the first UE for the second relay UE, for example : PC5 interface and Uu interface configuration of the first UE, as well as information such as the identity assigned to the first UE, to ensure that the first UE can communicate normally with the second relay UE, and if the handover is successful, the first UE The UE may access the network through the second relay.

It should be noted that if the first relay UE and the second relay UE belong to the same base station, the base station directly configures the second relay UE; if the first relay UE and the second relay UE belong to different base stations, the The source base station connected to the first relay UE sends the configuration information to the target base station connected to the second relay UE, and then the target base station configures the second relay UE, and the target base station sends the configuration information to the source base station, and the source base station sent to the first UE through the first relay UE.

In another possible implementation, the method further includes:

S504. If the first feedback message sent by the first UE is received, release the related configuration of the first UE in the first relay UE1;

S505. If the second feedback message sent by the first UE is received, release the related configuration of the first UE in the second relay UE1.

Specifically, in this embodiment, if the first feedback message sent by the first UE is received, it can be learned that the path switching of the first UE is successful, and the relevant configuration of the first UE in the first relay UE1 can be released; According to the second feedback message sent by the first UE, it can be known that the path switch of the first UE fails, and then the related configuration of the first UE in the second relay UE1 should be released.

To sum up, in the timer maintenance method provided by the embodiment of the present application, when the remote terminal (the first UE above) interacts with signaling between networks (such as RRC establishment, recovery, re-establishment, handover or path switching, etc.) ), increase the remote terminal timer or remote terminal increment on the basis of starting the timer corresponding to the corresponding process, and the remote terminal needs to complete the corresponding signaling within the duration of the corresponding timer of the existing process + the remote terminal timer Interaction, or, the remote terminal needs to complete the corresponding signaling interaction within the duration of the timer corresponding to the existing process + the incremental duration of the remote terminal.

in:

The signaling interaction process between the remote terminal and the network includes but is not limited to the process of RRC establishment, recovery, reconstruction, handover or path switching;

Remote terminal timer: the timer introduced for the remote terminal accessing the network through the relay, used in combination with the timer of the Uu interface to increase the interaction allowable time of the remote terminal; the start of the remote terminal timer can When the timer on the Uu interface expires, it can also be started before the timer on the Uu interface.

Wherein, the stop condition of the remote terminal timer is the same as the stop condition of the Uu interface timer. The timeout operation of the remote terminal timer, if the remote terminal timer starts before the Uu interface timer, the remote terminal timer expires and starts the corresponding Uu interface timer, if the remote terminal timer starts the corresponding Uu interface timer Start after the timer of the Uu interface expires, then the UE behavior when the timer of the remote terminal expires is the UE behavior corresponding to the timer expiration of the Uu interface, and the UE behavior of the timer of the Uu interface expires is changed to start the remote terminal timer.

Remote terminal increment: For the timer increment introduced by the remote terminal accessing the network through the relay, the specific timer value started for the remote terminal = the value of the timer on the Uu interface + the remote terminal increment, It is used to increase the interaction allowable delay of the remote terminal;

The value of remote terminal timer or remote terminal increment can be but not limited to 0ms, 50ms, 100ms, 150ms, 200ms, 300ms, 400ms, 500ms, 600ms, 1000ms, 1500ms, 2000ms, 2500ms, 3000ms, 5000ms, 10000ms , 15000ms, 20000ms, 30000ms.

The remote terminal timer and the remote terminal increment can be based on a specific timer (for example, the introduction of the remote terminal timer T300r, T300 based on the Uu interface. Or the introduction of the remote terminal increment A301, which is only used for the remote terminal T301), can also be based on a group of timers (for example, introduce a remote terminal timer T401 based on RRC establishment, re-establishment and recovery, and a remote terminal timer T402 based on handover and path transfer).

It should be noted that the above timer and parameter names are only used as examples to illustrate the technical solution of the embodiment of the present application, and do not constitute any limitation to the technical solution of the embodiment of the present application.

The timers of the Uu interface include but are not limited to T300, T301, T302, T304, T310, T311, and T319.

The value of the remote terminal timer or the remote terminal increment can be pre-configured or configured by the base station through dedicated signaling or broadcast, or can be a fixed value.

This solution is applicable to a multi-hop relay, that is, a scenario where a remote UE accesses a network through multiple relay relays. For multi-hop scenarios, the remote terminal timer or remote terminal increment can be configured based on the number of hops.

The following embodiments all take a one-hop relay as an example, and are still applicable to multi-hop scenarios.

Embodiment one

For the remote UE1 (the first UE above) to access the base station 1 through the relay UE1 (the relay UE above), the base station 1 uses the broadcast to configure the value of the remote UE timer (the first timer above) is 1 second, and the remote UE1 RRC is established successfully.

The relay UE1 in the initial IDLE state camps on the cell 1 controlled by the base station 1 . The methods shown in Figure 9 include:

S601. The base station 1 broadcasts a timer T300 (the second timer above) with a value of 300ms through the system information SIB, and a remote UE timer with a value of 1000ms.

S602. The relay UE1 sends the broadcast of the base station 1 to the remote UE1.

S603. The remote UE1 establishes an SL unicast connection with the relay UE1.

It should be understood that, in this embodiment, the time sequence relationship between S602 and S603 may be S602 before S603, or S603 before S602. That is to say, the remote UE1 may acquire the system information forwarded by the relay UE1 before or after establishing the SL unicast connection with the relay UE1.

S604. The remote UE1 initiates an RRC establishment request to the base station 1 through the relay UE1.

S604a. After receiving the RRC establishment request sent by the remote UE1 to the base station, the relay UE1 triggers the relay UE1 to initiate its own RRC connection, and enters the RRC connection state.

It should be noted that S604 runs through the entire S604a in terms of time. After the remote UE1 sends the RRC establishment request to the relay UE1, it triggers the relay UE1 to establish an RRC connection. After the RRC connection establishment of the relay UE1 is completed, the relay UE1 will The remote UE1 sends the RRC establishment request to the base station 1 .

S605. The remote UE1 starts T300 (300ms) when sending the RRC establishment request.

S606. The T300 of the remote UE1 times out. If the RRC establishment message from the base station has not been received at this time, the remote UE1 starts a remote UE timer (1000ms).

S607. The remote UE1 receives an RRC setup message from the base station 1 during the running of the remote UE timer.

S608. The remote UE1 stops the remote UE timer.

S609. The remote UE1 sends an RRC establishment complete message to the base station 1.

Embodiment two

For the remote UE1 to access the base station 1 through the relay UE1, the base station uses the broadcast to configure the remote UE timer value to 1 second, and the remote UE1 fails to establish RRC.

The methods shown in Figure 10 include:

S701-S706 are the same as S601-S606 in Embodiment 1, and for the sake of brevity of description, details are not repeated here.

S707, the remote UE1 does not receive the RRC establishment message from the base station during the running of the remote UE timer, the remote UE timer times out, the RRC establishment of the remote UE1 fails, and the remote UE1 enters the IDLE state.

Embodiment three

For the case where the remote UE1 accesses the base station 1 through the relay UE1, the base station uses the broadcast configuration remote terminal increment value to be 1 second, and the remote UE1 RRC is established successfully.

The methods shown in Figure 11 include:

S801-S804a are the same as S601-S604a in Embodiment 1, and for the sake of brevity of description, details are not repeated here.

S805. When the remote UE1 sends the RRC establishment request, start the timer T300 (the value of T300 is 300ms+1000ms=1300ms).

S806. The remote UE1 receives the RRC establishment message from the base station 1 during T300 operation.

S807. The remote UE1 stops the T300 timer.

S808. The remote UE1 sends an RRC establishment complete message to the base station 1.

Embodiment four

For the remote UE1 accessing the base station 1 through the relay UE1, the base station uses the broadcast to configure the remote terminal increment value as 1 second, and the remote UE1 fails to establish RRC.

The methods shown in Figure 12 include:

S901-S905 are the same as S801-S805 in Embodiment 3, and for the sake of brevity of description, details are not repeated here.

S906 , the remote UE1 does not receive the RRC establishment message from the base station during T300 operation, T300 times out, the RRC establishment of the remote UE1 fails, and the remote UE1 enters the IDLE state.

It should be noted that the first to fourth embodiments above can also be used to relay that UE1 is in the INACTIVE state or the connected state. Wherein, if the relay UE1 is in the INACTIVE state, S604a, S704a, S804a, and S904a are RRC recovery procedures; if the relay UE1 is in the connected state, there are no S604a, S704a, S804a, and S904a.

It should also be noted that the first to fourth embodiments above can also be used in the RRC recovery and re-establishment process of the remote UE1. Wherein, for the RRC recovery process of the remote UE1, the RRC message exchanged between the remote UE1 and the base station 1 is the RRC recovery request RRCResumeRequest (or RRCResumeRequest1), the RRC recovery RRCResume and the RRC recovery completion RRCResumeComplete message, in S605, S705, S805, The timer started in S905 is T319. For the RRC reestablishment process of the remote UE1, the RRC messages exchanged between the remote UE1 and the base station 1 are RRCReestablishmentRequest, RRCReestablishment and RRCReestablishmentComplete messages, timers started in S605, S705, S805, and S905 for T301.

Embodiment five

For the connection between the remote UE1 and the base station 1 through the relay UE1, the remote UE1 and the relay UE1 (the first relay UE above) and the relay UE2 (the second relay UE above) are both in the connected state, and the path The case where the handover was successful.

The methods shown in Figure 13 include:

S1001. The base station 1 notifies the remote UE1 to switch to the relay UE2 through dedicated signaling. The value of T304 (the third timer above) included in the signaling is 150ms, and the value of the remote UE timer is 200ms.

S1002. The remote UE1 starts T304 (150ms) after receiving the RRC reconfiguration message sent by the base station.

S1003, the base station 1 configures the relay UE2 through dedicated signaling, and configures the relay configuration related to the remote UE1 for it.

It should be noted that there is no timing relationship between S1003 and S1001.

S1004, the remote UE1 and the relay UE2 establish a PC5 connection.

S1005. During the establishment of the SL connection between the remote UE1 and the relay UE2, T304 times out, and the remote UE1 starts a remote UE timer (200ms).

S1006. After the remote UE1 successfully establishes the SL connection with the relay UE2, the timer of the remote UE is still running, and the remote UE1 sends an RRC reconfiguration complete message to the base station 1 through the relay UE2.

S1007. The remote UE1 stops the remote UE timer.

S1008. After receiving the completion of the reconfiguration of the remote UE1, the base station 1 sends a reconfiguration message to the relay UE1 to release the configuration related to the remote UE1 in the relay UE1.

S1009. Release the SL connection between the remote UE1 and the relay UE1.

Embodiment six

For the situation where the remote UE1 is connected to the base station 1 through the relay UE1, the remote UE1, the relay UE1 and the relay UE2 are all in a connected state, and path switching fails.

The methods shown in Figure 14 include:

S1101-S1105 are the same as S1001-S1005 in Embodiment 5, and for the sake of brevity of description, details are not repeated here.

S1106. The remote UE timer expires, and the remote UE1 does not receive the SL setup message from the relay UE2.

S1107. The remote UE1 sends an RRC reconfiguration complete message to the base station 1 through the relay UE1, and the path switching fails.

S1108 The base station 1 sends an RRC reconfiguration message to the relay UE2 to release the configuration related to the remote UE1 in the relay UE2.

It should be noted that Embodiment 5 and Embodiment 6 are also applicable to the method of configuring remote terminal increments, and the value of T304 to be started is 150ms+200ms.

It should also be noted that Embodiment 5 and Embodiment 6 are also applicable to the scenario where the remote UE switches from the direct link directly connected to the base station to the indirect link where the remote UE is connected to the network through a relay UE.

It should also be noted that Embodiment 5 and Embodiment 6 are also applicable to scenarios where the serving cells or base stations of relay UE1 and relay UE2 are different. Following UE configuration.

Specifically, if the relay UE1 and the relay UE2 belong to different base stations, the source base station 1 connected to the relay UE1 sends the configuration information to the target base station 2 connected to the relay UE2, and then the target base station 2 configures the relay UE2, and the target base station 2. Send the configuration information to the source base station 1, and the source base station 1 sends the configuration information to the remote UE through the relay UE1.

Based on the same inventive concept, an embodiment of the present application provides a timer maintenance device, which is applied to the first user equipment UE, including:

An acquiring module, configured to acquire duration information of a first timer configured by the base station for a first user equipment UE, the first UE accessing the network through a relay UE;

An execution module, configured to start a second timer and the first timer according to a radio resource control (RRC) procedure during the first UE accessing the network.

In some embodiments, the execution module is specifically configured to: start the second timer corresponding to the RRC process and the first timer for different RRC processes in the network access process of the first UE.

In some embodiments, the duration of the first timer is a plurality of durations respectively configured by the base station for the different RRC processes, or,

The duration of the first timer is a duration uniformly configured by the base station for the different RRC procedures.

In other embodiments, the execution module is specifically configured to: start the first timer when the RRC process is triggered, and start the second timer after the first timer expires;

The device also includes: a receiving module and a determining module, wherein,

The receiving module is configured to receive a feedback message corresponding to the RRC process from the base station during the running of the first timer or the second timer;

The determination module is configured to determine that the first timer and the second timer stop running in response to the feedback message;

or,

The execution module is also used for:

During the running of the first timer or the second timer, no feedback message corresponding to the RRC process is received from the base station, the second timer expires, and the first UE executes the first UE. Two timer overtime operation.

In some other embodiments, the execution module is specifically configured to: start the second timer when the RRC process is triggered, and start the first timer after the second timer expires;

The device also includes: a receiving module and a determining module, wherein,

The receiving module is configured to receive a feedback message corresponding to the RRC process from the base station during the running of the first timer or the second timer;

The determination module is configured to determine that the first timer and the second timer stop running in response to the feedback message;

or,

The execution module is also used for:

During the running of the first timer or the second timer, no feedback message corresponding to the RRC process is received from the base station, the first timer expires, and the first UE executes the first UE. Two timer overtime corresponding operation.

For the content not detailed in the device provided by the embodiment of this application, please refer to Figure 4 and Figure 9, and the method provided in the embodiment shown in Figure 10, the beneficial effect that the device provided by the embodiment of this application can achieve is the same as that of Figure 4 The methods provided in the embodiments shown in FIG. 9 and FIG. 10 are the same, and will not be repeated here.

Based on the same inventive concept, the embodiment of the present application also provides a timer maintenance device, which is applied to the first user equipment UE, including:

An obtaining module, configured to obtain a timing increment configured by the base station for the first user equipment UE, the first UE accessing the network through the relay UE;

The first configuration module is configured to configure the duration of the second timer corresponding to the RRC process in the process of the first UE accessing the network according to the timing increment;

An executing module, configured to start a corresponding second timer according to an RRC procedure during the first UE accessing the network.

In a possible implementation manner, the first configuration module is specifically configured to: for different RRC procedures in the network access procedure of the first UE, configure the corresponding duration of the second timer according to the timing increment.

In a possible implementation manner, the timing increment is a plurality of timing increments respectively configured by the base station for the different RRC processes, or,

The timing increment is a timing increment uniformly configured by the base station for the different RRC processes.

In another possible implementation manner, the device further includes: a receiving module and a determining module, wherein,

The receiving module is configured to receive a feedback message corresponding to the RRC process from the base station during the running of the second timer;

The determination module is configured to determine that the second timer stops running in response to the feedback message;

or,

The execution module is also used for:

During the running of the second timer, no feedback message corresponding to the RRC process is received from the base station, the second timer times out, and the first UE performs an operation corresponding to the timeout of the second timer.

For the content not detailed in the device provided by the embodiment of this application, you can refer to Figure 5 and Figure 11, and the method provided in the embodiment shown in Figure 12, the beneficial effect that the device provided by the embodiment of this application can achieve is the same as that of Figure 5 The method is the same as that provided in the embodiment shown in FIG. 11 and FIG. 12 , and will not be repeated here.

Based on the same inventive concept, the embodiment of the present application also provides a timer maintenance device, which is applied to the first user equipment UE, including:

An obtaining module, configured to obtain duration information of a first timer configured by the base station for a first user equipment UE, the first UE accessing the network through a first relay UE;

An executing module, configured to start a third timer corresponding to a path switching operation and the first timer if the first UE is handed over from the first relay UE to the second relay UE.

In a possible implementation manner, the execution module is specifically used for:

Start the first timer, and start the third timer after the first timer expires;

The device may also include: a receiving module, a determining module, and a sending module, wherein,

The receiving module is configured to receive a direct communication link SL message from the second relay UE during the running of the first timer or the third timer;

The determination module is configured to determine that the first timer and the third timer stop running in response to an SL establishment message;

The sending module is configured to send a first feedback message to the base station;

or,

The sending module is also used for:

During the running of the first timer or the third timer, no SL setup message from the second relay UE is received, the third timer expires, and a second feedback message is sent to the base station .

In another possible implementation manner, the execution module is specifically configured to:

Start the third timer, and start the first timer after the third timer expires;

The device may also include: a receiving module, a determining module, and a sending module, wherein,

The receiving module is configured to receive an SL setup message from the second relay UE during the running of the first timer or the third timer;

The determination module is configured to determine that the first timer and the third timer stop running in response to an SL establishment message;

The sending module is configured to send a first feedback message to the base station;

or,

The sending module is also used for:

During the running of the first timer or the third timer, no SL setup message from the second relay UE is received, the first timer expires, and a second feedback message is sent to the base station .

For the content not detailed in the device provided by the embodiment of the present application, please refer to Figure 6 and Figure 13, and the method provided in the embodiment shown in Figure 14, the beneficial effect that the device provided by the embodiment of the present application can achieve is the same as that of Figure 6 The method is the same as that provided in the embodiments shown in FIG. 13 and FIG. 14 , and will not be repeated here.

Based on the same inventive concept, the embodiment of the present application also provides a timer maintenance device, which is applied to the first user equipment UE, including:

An obtaining module, configured to obtain a timing increment configured by the base station for the first user equipment UE, the first UE accessing the network through the first relay UE;

A first configuration module, configured to configure the duration of a third timer corresponding to the first UE path switching operation according to the timing increment;

An executing module, configured to start the third timer if the first UE is handed over from the first relay UE to a second relay UE.

In a possible implementation manner, the device may further include: a receiving module, a determining module, and a sending module, wherein,

The receiving module is configured to receive an SL setup message from the second relay UE during the running of the third timer;

The determining module is configured to determine that the third timer stops running in response to an SL establishment message;

The sending module is configured to send a first feedback message to the base station;

or,

The sending module is also used for:

During the running of the third timer, no SL setup message from the second relay UE is received, the third timer expires, and a second feedback message is sent to the base station.

For the content not detailed in the device provided in the embodiment of the present application, you can refer to the method provided in the embodiment shown in Figure 7. The beneficial effects that the device provided in the embodiment of the present application can achieve are the same as those provided in the embodiment shown in Figure 7 The method is the same and will not be repeated here.

Based on the same inventive concept, the embodiment of the present application also provides a timer maintenance device, which is applied to base station equipment, including:

The second configuration module is configured to configure a timing increment or a duration of the first timer for the first user equipment UE, wherein the first UE accesses the network through a relay UE;

A sending module, configured to broadcast the timing increment or the duration information of the first timer through system information; or,

Informing the first UE of path switching through dedicated signaling, where the dedicated signaling carries the timing increment or the duration information of the first timer.

In a possible implementation manner, the second configuration module may specifically be used for:

According to the different RRC processes in the process of the first UE accessing the network and the path switching operation, respectively configure corresponding timing increments or durations of the first timer for the first UE;

or,

For different RRC processes in the process of the first UE accessing the network, uniformly configure a timing increment or a duration of a first timer for the first UE, and,

For the path switching operation of the first UE, a timing increment or a duration of a first timer is configured for the first UE.

In another possible implementation manner, if the path switching operation of the first UE is switching from the first relay UE to the second relay UE, the second configuration module is further configured to:

Configuring the second relay UE through dedicated signaling, and configuring information related to the relay of the first UE for the second relay UE.

In yet another possible implementation manner, the device further includes: a receiving module and an executing module, wherein,

The receiving module is configured to receive a first feedback message sent by the first UE;

The execution module is configured to release the related configuration of the first UE in the first relay UE1 in response to the first feedback message;

or,

The receiving module is configured to receive a second feedback message sent by the first UE;

The execution module is configured to release the related configuration of the first UE in the second relay UE1 in response to the second feedback message.

For the content not detailed in the device provided in the embodiment of this application, you can refer to the method provided in the embodiment shown in Figure 8 to Figure 14, the beneficial effect that the device provided in the embodiment of this application can achieve is the same as that shown in Figure 8 to Figure 14 The method provided in the example embodiment is the same, and will not be repeated here.

Based on the same principle as the method provided in the embodiment of the present application, the embodiment of the present application provides a device, the device includes: a memory and a processor; at least one program, stored in the memory, for being executed by the processor , compared with the prior art: the embodiment of this application provides the timer maintenance when the remote UE accesses the network through the relay UE (RRC establishment, recovery, reconstruction) or performs handover, path switching and other operations in the relay scenario method, thereby preventing the remote UE from failing in accessing the network (RRC establishment, recovery, re-establishment) or path switching, path switching and other processes due to too short a timer.

A device provided in this embodiment of the present application may be the base station device in the foregoing embodiments, or the first user equipment UE.

As shown in FIG. 15 , it is a base station device provided in the embodiment of the present application. The base station device 120 shown in FIG. 15 includes: a processor 1203 and a memory 1201 . Wherein, the processor 1203 is connected to the memory 1201, such as through a bus interface. Optionally, the base station device 120 may further include a transceiver 1202, and the transceiver 1202 may be used for data interaction between the base station device and other base station devices, such as sending data and/or receiving data. It should be noted that, in practical applications, the transceiver 1202 is not limited to one, and the structure of the base station device 120 does not limit the embodiment of the present application.

Wherein, the processor 1203 may perform the following operations:

Configuring a timing increment or a duration of a first timer for the first user equipment UE, wherein the first UE accesses the network through a relay UE;

Broadcasting the timing increment or the duration information of the first timer through system information; or,

Informing the first UE of path switching through dedicated signaling, where the dedicated signaling carries the timing increment or the duration information of the first timer.

In an optional embodiment, the processor 1203 may be specifically configured to:

According to the different RRC processes in the process of the first UE accessing the network, and the path switching operation, respectively configure the corresponding timing increment or the duration of the first timer for the first UE;

or,

For different RRC processes in the process of the first UE accessing the network, uniformly configure a timing increment or a duration of a first timer for the first UE, and,

For the path switching operation of the first UE, a timing increment or a duration of a first timer is configured for the first UE.

In another optional embodiment, if the path switching operation of the first UE is switching from the first relay UE to the second relay UE, the processor 1203 may be further configured to:

Configuring the second relay UE through dedicated signaling, and configuring information related to the relay of the first UE for the second relay UE.

In another optional embodiment, the processor 1203 may also be used for:

If the first feedback message sent by the first UE is received, releasing the related configuration of the first UE in the first relay UE1;

If the second feedback message sent by the first UE is received, releasing the related configuration of the first UE in the second relay UE1.

It should be understood that in the above embodiments, the bus architecture in FIG. 15 may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1203 and various circuit links of the memory represented by the memory 1201. together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. The transceiver 1202 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media.

The processor 1203 is responsible for managing the bus architecture and general processing, and the memory 1202 can store data used by the processor 1203 when performing operations.

As shown in FIG. 16 , it is a user equipment UE provided in the embodiment of the present application. The first UE 130 shown in FIG. 16 includes: a processor 1303 and a memory 1301. Wherein, the processor 1303 is connected to the memory 1301, such as through a bus interface. Optionally, the positioning service functional entity 130 may further include a transceiver 1302, which may be used for data interaction between the positioning service functional entity and other positioning service functional entities, such as data sending and/or data receiving, etc. . It should be noted that, in actual application, the transceiver 1302 is not limited to one, and the structure of the positioning service function entity 130 does not constitute a limitation to the embodiment of the present application.

In some embodiments, the processor 1303 may perform the following operations:

Obtaining the duration information of the first timer configured by the base station for the first user equipment UE, the first UE accessing the network through the relay UE;

Starting the second timer and the first timer according to a radio resource control (RRC) procedure during the first UE accessing the network.

In an optional embodiment, the processor 1303 may be specifically configured to: start a second timer corresponding to the RRC process and the first timer for different RRC processes in the network access process of the first UE.

In another optional embodiment, the processor 1303 may be specifically configured to: start the first timer when the RRC process is triggered, and start the second timer after the first timer expires;

During the running of the first timer or the second timer, a feedback message corresponding to the RRC process is received from the base station, and it is determined that the first timer and the second timer stop running ;

or,

During the running of the first timer or the second timer, no feedback message corresponding to the RRC process is received from the base station, the second timer expires, and the first UE executes the first UE. Two timer overtime operation.

In another optional embodiment, the processor 1303 may be specifically configured to: start the second timer when the RRC process is triggered, and start the first timer after the second timer times out;

During the running of the first timer or the second timer, a feedback message corresponding to the RRC process is received from the base station, and it is determined that the first timer and the second timer stop running ;

or,

During the running of the first timer or the second timer, no feedback message corresponding to the RRC process is received from the base station, the first timer expires, and the first UE executes the first UE. Two timer overtime corresponding operation.

In another optional embodiment, the duration of the first timer is a plurality of durations respectively configured by the base station for the different RRC processes, or,

The duration of the first timer is a duration uniformly configured by the base station for the different RRC procedures.

In other embodiments, the processor 1303 may perform the following operations:

Acquiring a timing increment configured by the base station for the first user equipment UE, the first UE accessing the network through the relay UE;

Configuring the duration of the second timer corresponding to the RRC process in the process of the first UE accessing the network according to the timing increment;

Starting the corresponding second timer according to the RRC procedure in the process of the first UE accessing the network.

In an optional embodiment, the processor 1303 may be specifically configured to: for different RRC procedures in the network access process of the first UE, configure a corresponding duration of the second timer according to the timing increment.

In another optional embodiment, the processor 1303 may also be used to:

In another optional embodiment, during the running of the second timer, a feedback message corresponding to the RRC process is received from the base station, and it is determined that the second timer stops running;

or,

During the running of the second timer, no feedback message corresponding to the RRC process is received from the base station, the second timer times out, and the first UE performs an operation corresponding to the timeout of the second timer.

In another optional embodiment, the timing increment is a plurality of timing increments respectively configured by the base station for the different RRC processes, or,

The timing increment is a timing increment uniformly configured by the base station for the different RRC processes.

In other embodiments, the processor 1303 may perform the following operations:

Acquiring duration information of a first timer configured by the base station for a first user equipment UE, where the first UE accesses the network through a first relay UE;

If the first UE is handed over from the first relay UE to the second relay UE, start a third timer corresponding to a path switching operation and the first timer.

In an optional embodiment, the processor 1303 may be specifically configured to: start the first timer, and start the third timer after the first timer expires;

During the running of the first timer or the third timer, receiving a direct communication link SL message from the second relay UE, determining the first timer and the third timer stop running, and send a first feedback message to the base station;

or,

During the running of the first timer or the third timer, no SL setup message from the second relay UE is received, the third timer expires, and a second feedback message is sent to the base station .

In another optional embodiment, the processor 1303 may be specifically configured to: start the third timer, and start the first timer after the third timer times out;

During the running of the first timer or the third timer, receiving an SL establishment message from the second relay UE, determining that the first timer and the third timer stop running, and sending a first feedback message to the base station;

or,

During the running of the first timer or the third timer, no SL setup message from the second relay UE is received, the first timer expires, and a second feedback message is sent to the base station .

In other embodiments, the processor 1303 may perform the following operations:

Acquiring a timing increment configured by the base station for the first user equipment UE, the first UE accessing the network through the first relay UE;

configuring the duration of a third timer corresponding to the first UE path switching operation according to the timing increment;

If the first UE is handed over from the first relay UE to a second relay UE, start the third timer.

In an optional embodiment, the processor 1303 may also be used for:

During the running of the third timer, receiving an SL establishment message from the second relay UE, determining that the third timer stops running, and sending a first feedback message to the base station;

or,

During the running of the third timer, no SL setup message from the second relay UE is received, the third timer expires, and a second feedback message is sent to the base station.

It should be understood that in the above embodiments, the bus architecture in FIG. 16 may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1303 and various circuit links of the memory represented by the memory 1301 together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. The transceiver 1302 may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media. For different user equipments, the user interface 1304 may also be an interface capable of connecting externally and internally to required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1303 is responsible for managing the bus architecture and general processing, and the memory 1302 can store data used by the processor 1303 when performing operations.

Optionally, the processor 1203, and/or, the processor 1303 can be a CPU (central processing device), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), FPGA (Field-Programmable Gate Array, Field Programmable Gate Array ) or CPLD (Complex Programmable Logic Device, complex programmable logic device), the processor can also adopt a multi-core architecture.

The processor is used to execute any one of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when it is run on a computer, the computer can execute the corresponding content in the foregoing method embodiments. Compared with the prior art, the embodiment of the present application provides the timing when the remote UE accesses the network through the relay UE (RRC establishment, recovery, reconstruction, reconfiguration) or performs operations such as handover and path switching in the relay scenario. Device maintenance method, so as to prevent the remote UE from failing in accessing the network (RRC establishment, recovery, reconstruction, reconfiguration) or path switching, path switching and other processes because the timer is too short.

It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

It should be understood that although the various steps in the flow chart of the accompanying drawings are displayed sequentially according to the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the order of execution is also It is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

The above descriptions are only part of the embodiments of the present invention. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principles of the present invention. It should be regarded as the protection scope of the present invention.

Claims (37)

1. A method of timer maintenance, the method comprising:

acquiring time length information of a first timer configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through relay UE;

And starting a second timer and the first timer according to a Radio Resource Control (RRC) process in the process of accessing the first UE to the network.

2. The method according to claim 1, wherein the starting a second timer and the first timer according to a radio resource control, RRC, procedure in the first UE accessing the network comprises:

and starting a second timer and the first timer corresponding to the RRC process aiming at different RRC processes in the process that the first UE accesses to the network.

3. The method according to claim 1 or 2, wherein the process of starting a second timer and the first timer comprises:

starting the first timer when triggering the RRC process, and starting the second timer after the first timer is overtime;

the method further comprises the steps of:

during the operation of the first timer or the second timer, receiving a feedback message corresponding to the RRC procedure from the base station, and determining that the first timer and the second timer stop operating;

or,

and during the operation of the first timer or the second timer, no feedback message corresponding to the RRC procedure is received from the base station, the second timer times out, and the first UE executes a second timer timeout operation.

4. The method according to claim 1 or 2, wherein the process of starting a second timer and the first timer comprises:

starting the second timer when triggering the RRC process, and starting the first timer after the second timer is overtime;

the method further comprises the steps of:

during the operation of the first timer or the second timer, receiving a feedback message corresponding to the RRC procedure from the base station, and determining that the first timer and the second timer stop operating;

or,

and during the operation of the first timer or the second timer, no feedback message corresponding to the RRC procedure is received from the base station, the first timer times out, and the first UE executes a second timer time-out corresponding operation.

5. The method of claim 2, wherein the step of determining the position of the substrate comprises,

the duration of the first timer is a plurality of durations configured by the base station for the different RRC procedures, respectively, or,

the duration of the first timer is one duration uniformly configured by the base station for the different RRC procedures.

6. A method of timer maintenance, the method comprising:

Acquiring a timing increment configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through relay UE;

configuring the duration of a second timer corresponding to an RRC process in the process of accessing the first UE to the network according to the timing increment;

and starting a corresponding second timer according to the RRC process in the process of accessing the first UE to the network.

7. The method of claim 6, wherein the configuring the duration of the second timer corresponding to the RRC procedure in the first UE accessing the network according to the timing increment comprises:

and configuring the duration of the corresponding second timer according to the timing increment for different RRC processes in the network access process of the first UE.

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

during the operation of the second timer, receiving a feedback message corresponding to the RRC procedure from the base station, and determining that the second timer stops operating;

or,

and during the operation of the second timer, no feedback message corresponding to the RRC procedure is received from the base station, the second timer times out, and the first UE executes a second timer time-out corresponding operation.

9. The method of claim 7, wherein the step of determining the position of the probe is performed,

the timing increment is a plurality of timing increments configured by the base station for the different RRC procedures, respectively, or,

the timing increment is one timing increment uniformly configured by the base station for the different RRC procedures.

10. A method of timer maintenance, the method comprising:

acquiring time length information of a first timer configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through a first relay UE;

and if the first UE is switched from the first relay UE to the second relay UE, starting a third timer and the first timer corresponding to path switching operation.

11. The method of claim 10, wherein the starting the third timer and the first timer corresponding to the path switch operation comprises:

starting the first timer, and starting the third timer after the first timer is overtime;

the method further comprises the steps of:

receiving a direct communication link SL message from the second relay UE during the operation of the first timer or the third timer, determining that the first timer and the third timer stop operating, and sending a first feedback message to the base station;

Or,

during the operation of the first timer or the third timer, no set-up SL message from the second relay UE is received, and the third timer times out, and a second feedback message is sent to the base station.

12. The method of claim 10, wherein the starting the third timer and the first timer corresponding to the path switch operation comprises:

starting the third timer, and starting the first timer after the third timer is overtime;

the method further comprises the steps of:

receiving an establishing SL message from the second relay UE during the operation of the first timer or the third timer, determining that the first timer and the third timer stop operating, and sending a first feedback message to the base station;

or,

and during the operation of the first timer or the third timer, the establishment SL message from the second relay UE is not received, the first timer is overtime, and a second feedback message is sent to the base station.

13. A method of timer maintenance, the method comprising:

acquiring a timing increment configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through a first relay UE;

Configuring the duration of a third timer corresponding to the first UE path switching operation according to the timing increment;

and if the first UE is switched from the first relay UE to the second relay UE, starting the third timer.

14. The method of claim 13, wherein the method further comprises:

during the operation of the third timer, receiving an establishing SL message from the second relay UE, determining that the third timer stops operating, and sending a first feedback message to the base station;

or,

during operation of the third timer, no set-up SL message from the second relay UE is received, and the third timer times out, sending a second feedback message to the base station.

15. A method of timer maintenance, the method comprising:

configuring a timing increment or the duration of a first timer for first User Equipment (UE), wherein the first UE accesses a network through relay UE;

broadcasting the timing increment or the duration information of the first timer through system information; or,

and notifying the first UE to switch paths through a special signaling, wherein the special signaling carries the timing increment or the duration information of the first timer.

16. The method of claim 15, wherein the configuring the first user equipment UE with the timing increment or the duration of the first timer comprises:

according to different RRC processes and path switching operations in the process of accessing the first UE into the network, respectively configuring corresponding timing increment or duration of a first timer for the first UE;

or,

for different RRC procedures in the first UE access network procedure, uniformly configuring a timing increment or a duration of a first timer for the first UE, and,

and configuring a timing increment or the duration of a first timer for the first UE aiming at the path switching operation of the first UE.

17. The method of claim 16, wherein if the path switching operation of the first UE is to switch from the first relay UE to the second relay UE, the method further comprises:

and configuring the second relay UE through dedicated signaling, and configuring information related to the relay of the first UE for the second relay UE.

18. The method of claim 17, wherein the method further comprises:

releasing the relevant configuration of the first UE in the first relay UE1 if a first feedback message sent by the first UE is received;

And if a second feedback message sent by the first UE is received, releasing the relevant configuration of the first UE in the second relay UE 1.

19. A timer maintenance apparatus, applied to a first user equipment UE, comprising:

the acquisition module is used for acquiring the duration information of a first timer configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through relay UE;

and the execution module is used for starting a second timer and the first timer according to a Radio Resource Control (RRC) process in the process of accessing the first UE into the network.

20. A timer maintenance apparatus, applied to a first user equipment UE, comprising:

the acquisition module is used for acquiring a timing increment configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through relay UE;

a first configuration module, configured to configure a duration of a second timer corresponding to an RRC procedure in the first UE accessing the network according to the timing increment;

and the execution module is used for starting a corresponding second timer according to the RRC process in the process of accessing the first UE into the network.

21. A timer maintenance apparatus, applied to a first user equipment UE, comprising:

The acquisition module is used for acquiring the time length information of a first timer configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through a first relay UE;

and the execution module is used for starting a third timer and the first timer corresponding to path switching operation if the first UE is switched from the first relay UE to the second relay UE.

22. A timer maintenance apparatus, applied to a first user equipment UE, comprising:

the acquisition module is used for acquiring a timing increment configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through a first relay UE;

the first configuration module is used for configuring the duration of a third timer corresponding to the first UE path switching operation according to the timing increment;

and the execution module is used for starting the third timer if the first UE is switched from the first relay UE to the second relay UE.

23. A timer maintenance apparatus, characterized by being applied to a base station device, comprising:

a second configuration module, configured to configure a timing increment or a duration of a first timer for a first UE, where the first UE accesses a network through a relay UE;

the sending module is used for broadcasting the timing increment or the duration information of the first timer through system information; or,

And notifying the first UE to switch paths through a special signaling, wherein the special signaling carries the timing increment or the duration information of the first timer.

24. A user device, comprising:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

a processor for reading the computer program in the memory and performing the following operations:

acquiring time length information of a first timer configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through relay UE;

and starting a second timer and the first timer according to a Radio Resource Control (RRC) process in the process of accessing the first UE to the network.

25. The user equipment of claim 24, wherein the processor is specifically configured to:

and starting a second timer and the first timer corresponding to the RRC process aiming at different RRC processes in the process that the first UE accesses to the network.

26. The user equipment according to claim 24 or 25, wherein the processor is specifically configured to:

starting the first timer when triggering the RRC process, and starting the second timer after the first timer is overtime;

During the operation of the first timer or the second timer, receiving a feedback message corresponding to the RRC procedure from the base station, and determining that the first timer and the second timer stop operating;

or,

and during the operation of the first timer or the second timer, no feedback message corresponding to the RRC procedure is received from the base station, the second timer times out, and the first UE executes a second timer timeout operation.

27. The user equipment according to claim 24 or 25, wherein the processor is specifically configured to:

starting the second timer when triggering the RRC process, and starting the first timer after the second timer is overtime;

during the operation of the first timer or the second timer, receiving a feedback message corresponding to the RRC procedure from the base station, and determining that the first timer and the second timer stop operating;

or,

and during the operation of the first timer or the second timer, no feedback message corresponding to the RRC procedure is received from the base station, the first timer times out, and the first UE executes a second timer time-out corresponding operation.

28. A user device, comprising:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

a processor for reading the computer program in the memory and performing the following operations:

acquiring a timing increment configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through relay UE;

configuring the duration of a second timer corresponding to an RRC process in the process of accessing the first UE to the network according to the timing increment;

and starting a corresponding second timer according to the RRC process in the process of accessing the first UE to the network.

29. The user equipment of claim 28, wherein the processor is specifically configured to:

and configuring the duration of the corresponding second timer according to the timing increment for different RRC processes in the network access process of the first UE.

30. The user equipment of claim 28 or 29, wherein the processor is further configured to:

during the operation of the second timer, receiving a feedback message corresponding to the RRC procedure from the base station, and determining that the second timer stops operating;

Or,

and during the operation of the second timer, no feedback message corresponding to the RRC procedure is received from the base station, the second timer times out, and the first UE executes a second timer time-out corresponding operation.

31. A user device, comprising:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

a processor for reading the computer program in the memory and performing the following operations:

acquiring time length information of a first timer configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through a first relay UE;

and if the first UE is switched from the first relay UE to the second relay UE, starting a third timer and the first timer corresponding to path switching operation.

32. The user equipment of claim 31, wherein the processor is specifically configured to:

starting the first timer, and starting the third timer after the first timer is overtime;

receiving a direct communication link SL message from the second relay UE during the operation of the first timer or the third timer, determining that the first timer and the third timer stop operating, and sending a first feedback message to the base station;

Or,

during the operation of the first timer or the third timer, no set-up SL message from the second relay UE is received, and the third timer times out, and a second feedback message is sent to the base station.

33. The user equipment of claim 31, wherein the processor is specifically configured to:

starting the third timer, and starting the first timer after the third timer is overtime;

receiving an establishing SL message from the second relay UE during the operation of the first timer or the third timer, determining that the first timer and the third timer stop operating, and sending a first feedback message to the base station;

or,

and during the operation of the first timer or the third timer, the establishment SL message from the second relay UE is not received, the first timer is overtime, and a second feedback message is sent to the base station.

34. A user device, comprising:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

a processor for reading the computer program in the memory and performing the following operations:

Acquiring a timing increment configured by a base station for first User Equipment (UE), wherein the first UE accesses a network through a first relay UE;

configuring the duration of a third timer corresponding to the first UE path switching operation according to the timing increment;

and if the first UE is switched from the first relay UE to the second relay UE, starting the third timer.

35. The user device of claim 34, wherein the processor is further configured to:

during the operation of the third timer, receiving an establishing SL message from the second relay UE, determining that the third timer stops operating, and sending a first feedback message to the base station;

or,

during operation of the third timer, no set-up SL message from the second relay UE is received, and the third timer times out, sending a second feedback message to the base station.

36. A base station apparatus, comprising:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

a processor for reading the computer program in the memory and performing the method of any of claims 15-18.

37. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 5, or claims 6 to 9, or claims 10 to 12, or claims 13 to 14, or claims 15 to 18.

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