WO2023151044A1

WO2023151044A1 - Path switching method and apparatus

Info

Publication number: WO2023151044A1
Application number: PCT/CN2022/076101
Authority: WO
Inventors: 杨星
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2023-08-17
Also published as: CN114731566A

Abstract

The embodiments of the present disclosure belong to the technical field of communications. Disclosed are a path switching method and apparatus. The path switching method is applied to a first user equipment (UE). The method comprises: receiving a path switching instruction, wherein the path switching instruction comprises a path switching condition, which is used for triggering path switching; determining whether the path switching condition is met; and in response to the path switching condition being met, selecting a third UE from at least one second UE, and initiating path switching to the third UE. Therefore, by means of receiving a path switching instruction in advance, determining whether a path switching condition in the path switching instruction is met, and when the path switching condition in the path switching instruction is met, triggering path switching, the problem in the relevant art of a wireless link failure resulting from a UE being unable to receive a switching instruction in a timely manner can be avoided.

Description

Path switching method and device

technical field

The present disclosure relates to the field of communication technologies, and in particular, to a path switching method and device.

Background technique

During the path switching process, for the remote UE (User Equipment, user equipment), the network device will send a switching request to the target relay UE according to the measurement report result of the UE. After the target relay UE confirms, it will send a switch request to the remote UE A handover command, wherein the handover command carries configuration information of a target relay UE, and after the remote UE receives the handover command, the remote UE initiates a path switch to the target relay UE.

However, since the link between the remote UE and the network device may deteriorate rapidly due to the movement of the UE, the remote UE cannot receive the handover instruction sent by the network device in time, resulting in failure of the radio link.

Contents of the invention

The embodiment of the first aspect of the present disclosure proposes a path switching method, which is applied to a first user equipment UE. The method includes: receiving a path switching instruction, wherein the path switching instruction includes a path switching condition for triggering path switching and determining whether the path switching condition is satisfied; in response to satisfying the path switching condition, selecting a third UE from at least one second UE, and initiating a path switching to the third UE.

In this technical solution, the first UE determines whether the path switching condition is met by receiving the path switching instruction, and when the path switching condition is met, selects a third UE from at least one second UE, and initiates path switching to the third UE Therefore, by receiving the path switching instruction in advance, and determining whether the path switching condition in the path switching instruction is met, and triggering the path switching when the path switching condition in the path switching instruction is met, it is possible to prevent the UE from failing to receive the switching instruction in time. A problem that causes the wireless link to fail.

Optionally, the path switching instruction further includes at least one of the following: at least one second UE identity corresponding to the second UE; and a connection establishment configuration corresponding to each second UE identity.

Optionally, the determining whether the path switching condition is satisfied includes: determining that the path switching condition is satisfied in response to at least one radio channel measurement quantity of the first UE meeting a corresponding satisfying condition.

Optionally, the at least one radio channel measurement quantity includes at least one of the following: a first signal received power between the first UE and the second UE, and a power between the first UE and the serving cell to which it belongs. The second signal received power between, wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding first threshold value; the second signal received power corresponds to satisfy The condition is that the received power of the second signal is smaller than a corresponding second threshold.

Optionally, the at least one radio channel measurement quantity includes at least one of the following: a first signal received power between the first UE and the second UE; and a power between the first UE and the current serving UE The third signal received power between; wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding third threshold; the third signal received power corresponds to satisfy The condition is that the received power of the third signal is smaller than the corresponding fourth threshold value.

Optionally, the first signal received power between the first UE and the second UE includes at least one of the following powers: reference signal received power between the first UE and the second UE ; and the discovery signal received power between the first UE and the second UE, wherein the threshold value corresponding to the reference signal received power is the same as or different from the threshold value corresponding to the discovery signal received power .

Optionally, the determining that the path switching condition is met in response to at least one radio channel measurement of the first UE meeting a corresponding satisfaction condition includes: responding to at least one radio channel measurement of the first UE When the quantity meets the corresponding satisfaction condition, and the continuous satisfaction duration is greater than or equal to the specified maintenance duration, it is determined that the path switching condition is satisfied.

Optionally, the path switching instruction further includes: a target cell identifier, used to indicate that the cell identifier of the serving cell to which the third UE belongs needs to be consistent with the target cell identifier.

Optionally, the path switching instruction further includes: a target UE identifier, used to indicate that the UE corresponding to the third UE and the target UE identifier needs to be able to establish a sidelink connection.

Optionally, the UE corresponding to the third UE and the target UE identifier can establish a sidelink connection, and the condition that needs to be met is that at least one UE identifier indicated by the third UE that can establish a sidelink connection includes the target UE logo.

Optionally, the method further includes: during the reestablishment process of the first UE, in response to the UE identity corresponding to the selected fourth UE being a second UE identity in the path switching instruction, sending the Four UEs initiate path switching.

Optionally, the method further includes: during the re-establishment process of the UE, in response to the UE identity corresponding to the selected fifth UE being a second UE identity in the path switching instruction, and the fifth UE The cell identity of the serving cell to which it belongs is consistent with the target cell identity in the path switching instruction, and path switching is initiated to the selected fifth UE.

The embodiment of the second aspect of the present disclosure proposes another path switching method, which is applied to a network device. The method includes: sending a path switching instruction to the first user equipment UE, where the path switching instruction includes: path switching conditions, Used to trigger path switching.

Optionally, the path switching instruction further includes at least one of the following: a second UE identity corresponding to at least one second UE, and a connection establishment configuration corresponding to each second UE identity; The UE identity corresponding to the handover third UE exists in the at least one second UE identity.

Optionally, the path switching condition includes that at least one radio channel measurement quantity of the first UE meets a corresponding satisfying condition.

Optionally, the at least one radio channel measurement quantity includes: a first signal received power between the first UE and the second UE, and a second signal received power between the first UE and the serving cell to which it belongs. Received power, wherein the satisfaction condition corresponding to the first signal reception power is that the first signal reception power is greater than the corresponding first threshold value; the satisfaction condition corresponding to the second signal reception power is that the first The received power of the second signal is less than the corresponding second threshold.

Optionally, the at least one radio channel measurement quantity includes at least one of the following: a first signal received power between the first UE and the second UE; and a power between the first UE and the current serving UE The third signal received power between; wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding third threshold; and the third signal received power corresponds to A satisfying condition is that the received power of the third signal is less than a corresponding fourth threshold.

Optionally, the path switching condition further includes: specifying a maintenance period, which is used to indicate that the at least one wireless channel measurement quantity needs to meet a corresponding satisfaction condition within the maintenance period.

Optionally, the UE corresponding to the third UE and the target UE identifier can establish a sidelink connection, and the condition that needs to be met is that at least one UE identifier that can establish a sidelink connection broadcast by the third UE includes the target UE logo.

The embodiment of the third aspect of the present disclosure proposes a path switching apparatus, the apparatus is applied to a first user equipment UE, and the apparatus includes: a transceiver unit configured to receive a path switching instruction, where the path switching instruction includes: A path switch condition, used to trigger a path switch; a processing unit, configured to determine whether the path switch condition is satisfied, and in response to satisfying the path switch condition, select a third UE from at least one second UE, and send a request to the first UE The third UE initiates a path switch.

The embodiment of the fourth aspect of the present disclosure proposes another path switching apparatus, the apparatus is applied to network equipment, and the apparatus includes: a transceiver unit, configured to send a path switching instruction to the first user equipment UE, wherein the path The switching instruction includes: a path switching condition, which is used to trigger path switching.

The embodiment of the fifth aspect of the present disclosure provides a path switching device, the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that all The device executes the method described in the embodiment of the first aspect of the present disclosure.

The embodiment of the sixth aspect of the present disclosure provides another path switching device, the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that The device executes the method described in the embodiment of the second aspect of the present disclosure.

The embodiment of the seventh aspect of the present disclosure provides a path switching device, which is characterized in that it includes: a processor and an interface circuit; the interface circuit is configured to receive code instructions and transmit them to the processor; the processor, The code instruction is used to execute the method described in the embodiment of the first aspect of the present disclosure.

The embodiment of the eighth aspect of the present disclosure proposes another path switching device, which is characterized in that it includes: a processor and an interface circuit; the interface circuit is configured to receive code instructions and transmit them to the processor; the processor , configured to run the code instructions to execute the method described in the embodiment of the second aspect of the present disclosure.

The embodiment of the ninth aspect of the present disclosure provides a computer-readable storage medium for storing instructions, and when the instructions are executed, the method described in the embodiment of the first aspect of the present disclosure is implemented.

The embodiment of the tenth aspect of the present disclosure provides another computer-readable storage medium for storing instructions, and when the instructions are executed, the method described in the embodiment of the second aspect of the present disclosure is implemented.

The embodiment of the eleventh aspect of the present disclosure provides a computer program product, which, when running on a computer, causes the computer to execute the method described in the embodiment of the first aspect above.

The embodiment of the twelfth aspect of the present disclosure provides another computer program product, which, when running on a computer, causes the computer to execute the method described in the embodiment of the second aspect above.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and will be apparent from the description, or may be learned by practice of the disclosure.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the following will describe the drawings that need to be used in the embodiments of the present disclosure or the background technology.

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of another communication system provided by an embodiment of the present disclosure;

FIG. 3 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure;

FIG. 4 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 5 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 7 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 8 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 9 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 10 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 11 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 12 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 13 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 14 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of a path switching device provided by an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of a path switching device provided by an embodiment of the present disclosure;

FIG. 17 is a schematic structural diagram of a network device provided by an embodiment of the present disclosure; and

Fig. 18 is a block diagram of a user equipment provided by an embodiment of the present disclosure.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the disclosed embodiments as recited in the appended claims.

Terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only, and are not intended to limit the embodiments of the present disclosure. As used in the examples of this disclosure and the appended claims, the singular forms "a" and "the" are also intended to include the plural unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the embodiments of the present disclosure may use the terms first, second, third, etc. to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals designate like or similar elements throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present disclosure and should not be construed as limiting the present disclosure.

In order to better understand the path switching method disclosed in the embodiment of the present disclosure, the communication system to which the embodiment of the present disclosure is applicable is firstly described below.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application. The communication system may include, but not limited to, a network device, a relay UE, and a UE, where the UE communicates with the network device through the relay UE. The number and configuration of the devices shown in FIG. It does not constitute a limitation to the embodiment of the present application, and may include two or more network devices, two or more relay UEs, and two or more UEs in practical applications. The communication system shown in FIG. 1 includes one network device 101 , one relay UE102 and one UE103 as an example.

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of another communication system provided by an embodiment of the present application. The communication system may include, but is not limited to, a network device and a UE. The UE communicates directly with the network device. The number and shape of the devices shown in FIG. The application may include two or more network devices and two or more UEs. The communication system shown in FIG. 2 includes a network device 201 and a UE 202 as an example.

It should be noted that the technical solutions of the embodiments of the present disclosure may be applied to various communication systems. For example: long term evolution (LTE) system, fifth generation (5th generation, 5G) mobile communication system, 5G new radio (new radio, NR) system, or other future new mobile communication systems, etc.

The network device in the embodiments of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the network device 101 may be an evolved base station (evolved NodeB, eNB), a transmission reception point (transmission reception point or transmit receive point, TRP), a next generation base station (next generation NodeB, gNB) in the NR system, or other future mobile A base station in a communication system or an access node in a wireless fidelity (Wireless Fidelity, WiFi) system, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network device. The network device provided by the embodiment of the present disclosure may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit), and the CU-DU The structure of the network device, such as the protocol layer of the base station, can be separated, and the functions of some protocol layers are placed in the centralized control of the CU, and the remaining part or all of the functions of the protocol layer are distributed in the DU, and the CU centrally controls the DU.

The user equipment in the embodiments of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be called a terminal device (terminal), a mobile station (mobile station, MS), a mobile terminal device (mobile terminal, MT) and so on. The user equipment can be a car with communication function, smart car, mobile phone, wearable device, tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal equipment, augmented reality ( augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control (industrial control), wireless terminal equipment in self-driving (self-driving), wireless terminal equipment in remote medical surgery (remote medical surgery), smart grid ( Wireless terminal devices in smart grid, wireless terminal devices in transportation safety, wireless terminal devices in smart city, wireless terminal devices in smart home, etc. The embodiments of the present disclosure do not limit the specific technology and specific equipment form adopted by the user equipment.

The relay UE in the embodiments of the present disclosure is a UE that provides a relay function.

In the communication system, during the path switching process, for the remote UE, the network device will send a switching request to the target relay UE according to the measurement report result of the UE. After the target relay UE confirms, it will send a switching command to the remote UE , wherein the handover command carries configuration information of a target relay UE, and after the remote UE receives the handover command, the remote UE initiates a path switch to the target relay UE.

In view of the above problems, the present disclosure proposes a path switching method and device.

FIG. 3 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. It should be noted that the path switching method of the embodiment of the present disclosure may be applied to a first UE.

Step 301, receiving a path switching instruction, wherein the path switching instruction includes a path switching condition for triggering path switching.

Wherein, the path switching condition includes at least one wireless channel measurement quantity and the satisfaction condition corresponding to each wireless channel measurement quantity, and the path switching condition also includes: specifying a maintenance duration, which is used to indicate that at least one wireless channel measurement quantity needs to be satisfied within the maintenance duration. The corresponding conditions are met.

As a possible implementation manner, the path switching instruction may be configured by a network device and sent to the first UE.

As an example, the first UE may be directly connected to the network device, that is, the first UE may receive a path switching instruction sent by the network device.

As another example, the first UE may not be directly connected to the network device. For example, the first UE may receive the path switching instruction sent by the network device through the relay UE.

As another possible implementation manner, the path switching instruction may be configured by the relay UE and sent to the first UE.

As an example, the first UE may receive the path switching instruction sent by the relay UE.

In an embodiment of the present disclosure, the path switching condition may include at least one radio channel measurement quantity, a satisfaction condition corresponding to each radio channel measurement quantity, and a specified maintenance period, wherein the specified maintenance period may be used to indicate that at least one radio channel measurement quantity needs to be The corresponding satisfaction conditions are met within the maintenance period.

To sum up, the first UE can receive the path switching instruction and trigger the path switching when the path switching condition in the path switching instruction is met, which can avoid the problem that the UE cannot receive the switching instruction in time and cause radio link failure.

An embodiment of the present disclosure provides another path switching method. FIG. 4 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure. The path switching method can be applied to the first UE, and the path switching method can be independently The execution may also be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in the related art.

As shown in Figure 4, the path switching method may include the following steps:

Step 401, receiving a path switching instruction, wherein the path switching instruction includes a path switching condition for triggering path switching.

As another example, the first UE may not be directly connected to the network device. For example, the first UE may receive the path switching instruction sent by the network device through the relay UE, wherein the first UE is called a remote (remote) UE , the UE providing the relay function is called a relay UE, and the remote UE communicates with the relay UE through a sidelink (sidelink) unicast communication.

Wherein, it should be noted that the path switching instruction may include: a path switching condition, and the path switching condition may be used to trigger path switching.

In addition, it should be understood that the relay UE may connect the remote UE to a network device, and may also connect the remote UE to other UEs, such as other target UEs.

In the embodiments of the present disclosure, the network device uses a base station as an example. The base station may include multiple cells serving the first user equipment. For example, the base station involved in the embodiments of the present disclosure may be a BTS (Base Transceiver Station, Base Transceiver Station) in GSM (Global System for Mobile communications, Global System for Mobile Communications) or CDMA (Code Division Multiple Access, Code Division Multiple Access) ), it can also be a base station (NodeB) in WCDMA (Wide-band Code Division Multiple Access, bandwidth code division multiple access), and it can also be an evolution (evolutional) in an LTE (long term evolution, long-term evolution) system Node B (referred to as eNB or e-NodeB), 5G base station (referred to as gNB) in the 5G network architecture (next generation system), can also be HeNB (Home evolved Node B, home evolution base station), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., are not limited in this embodiment of the present disclosure.

The first UE may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem, or the like. In different systems, the name of the first UE may be different. For example, in a 5G system, the wireless UE may communicate with one or more CNs (Core Network, Core Network) via the RAN, and the first wireless UE may be a mobile UEs, such as mobile telephones (or "cellular" telephones) and computers with mobile UEs, which may be, for example, portable, pocket, hand-held, built-in computer, or vehicle-mounted mobile devices, exchange language with the radio access network and/or data.

For example, the first UE may be a PCS (Personal Communication Service, personal communication service) phone, a cordless phone, a SIP (Session Initiated Protocol, session initiation protocol) phone, a WLL (Wireless Local Loop, wireless local loop) station, a PDA (Personal Digital Assistant, personal digital assistant) and other equipment. A wireless UE may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, The remote UE (remote terminal), access UE (access terminal), user UE (user terminal), user agent (user agent), and user device (user device) are not limited in the embodiments of the present disclosure.

Step 402, determine whether the path switching condition is satisfied.

In the embodiment of the present disclosure, the first UE may determine whether a path switching condition is satisfied through at least one radio channel measurement quantity of the first UE. In the embodiment of the present disclosure, the radio channel measurement quantity may represent signal received power, wherein, in different communication systems, the received power corresponding to at least one radio channel measurement quantity of the first UE is also different.

Step 403, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

In the embodiment of the present disclosure, when the first UE satisfies the path switching condition, a third UE is selected from at least one second UE, and path switching is initiated to the third UE. Wherein, it should be noted that satisfying the path switching condition may mean that the first UE meets the path switching condition, or that the first UE and the optional relay UE satisfy the path switching condition at the same time. It should be understood that the second UE may satisfy the path switching condition optional relay UE, and the third UE may be a target relay UE among the optional relay UEs.

As an example, when the number of the second UE meeting the path switching condition is one, the second UE may be used as the third UE.

As another example, when there are at least two second UEs satisfying the path switching condition, one second UE may be randomly selected from the at least two second UEs as the third UE.

It should be noted that, optionally, in order to enable the first UE to initiate path switching to the third UE among the second UEs and establish a connection on the corresponding path, the path switching instruction may further include: at least one second UE corresponding to The second UE identity, and the connection establishment configuration corresponding to each second UE identity; wherein, the connection establishment configuration may include but not limited to: radio bearer configuration, adaptation layer configuration, and measurement reporting configuration.

Optionally, when the first UE establishes a connection with the target cell through a relay UE, or when the first UE is directly connected to the target cell, the path switching instruction further includes: a target cell identifier, used to indicate the serving cell to which the third UE belongs The ID of the cell needs to be consistent with the ID of the target cell.

Optionally, when the first UE establishes a connection with the target UE through a relay UE, or when the first UE is directly connected to the target UE, the path switching instruction further includes: a target UE identifier, used to indicate that the third UE The UE corresponding to the target UE ID needs to be able to establish a sidelink connection.

In summary, the first UE determines whether the path switching condition is satisfied by receiving the path switching instruction, and when the path switching condition is satisfied, selects a third UE from at least one second UE, and initiates a path switching to the third UE, thereby , by receiving the path switching command in advance and determining whether the path switching condition in the path switching command is met, and triggering the path switching when the path switching condition in the path switching command is met, it can avoid that the UE cannot receive the switching command in time and cause the wireless link road failure problem.

An embodiment of the present disclosure provides another path switching method. FIG. 5 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure. The path switching method can be applied to the first UE, and the path switching method can be independently The execution may also be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in the related art.

As shown in Figure 5, the path switching method may include the following steps:

Step 501, receiving a path switching instruction, wherein the path switching instruction includes: a path switching condition for triggering path switching.

Step 502, in response to the fact that at least one radio channel measurement quantity of the first UE meets the corresponding satisfaction condition, determine that the path switching condition is satisfied.

In the embodiments of the present disclosure, in different communication systems, the received power corresponding to at least one radio channel measurement quantity of the first UE is also different.

As an example, when the first UE is connected to the network device through a relay UE, at least one wireless channel measurement may include: the first signal received power between the first UE and the second UE, when the first signal received power meets When the corresponding condition is satisfied, it is determined that the path switching condition is satisfied.

As another example, when the first UE is directly connected to the network device, the at least one wireless channel measurement quantity may include: the second signal received power between the first UE and the serving cell to which it belongs, and/or, the first UE and the second The received power of the first signal between the two UEs.

For example, when the first UE is directly connected to the network device, at least one radio channel measurement quantity includes: the second signal received power between the first UE and the serving cell to which it belongs, correspondingly, when the second signal received power meets the corresponding satisfaction condition , it is determined that the path switching condition is met.

For another example, when the first UE is directly connected to the network device, at least one wireless channel measurement includes: the first signal received power between the first UE and the second UE, and correspondingly, the first signal received power meets the corresponding satisfaction condition , it is determined that the path switching condition is met.

For another example, when the first UE is directly connected to the network device, at least one wireless channel measurement quantity includes: the first signal received power between the first UE and the second UE, and the second signal reception power between the first UE and the serving cell to which it belongs. Signal received power, when both the first signal received power and the second signal received power meet corresponding satisfaction conditions, it is determined that the path switching condition is satisfied.

As another example, when the first UE is connected to the target UE through the relay UE, the at least one wireless channel measurement quantity may include: the third signal received power between the first UE and the current serving UE, and/or, the first The received power of the first signal between the UE and the second UE. Wherein, the first UE is a remote UE, the second UE is an optional relay UE, and the current serving UE is a current serving relay UE.

For example, when the first UE is connected to the target UE through the relay UE, at least one radio channel measurement quantity includes: the third signal received power between the first UE and the current serving UE, the third signal received power meets the corresponding satisfaction condition, Make sure that path switching conditions are met.

For another example, when the first UE is connected to the target UE through the relay UE, at least one radio channel measurement quantity includes: the first signal received power between the first UE and the second UE, and the first signal received power meets the corresponding satisfaction condition , confirm that the path switching condition is satisfied.

For another example, when the first UE is connected to the target UE through the relay UE, at least one radio channel measurement quantity includes: the third signal received power between the first UE and the current serving UE and the third signal reception power between the first UE and the second UE The received power of the first signal, the received power of the third signal and the received power of the first signal all meet corresponding satisfaction conditions, and it is determined that the path switching condition is satisfied.

As yet another example, when the first UE is directly connected to the target UE, the at least one radio channel measurement quantity may include: first signal reception power between the first UE and the second UE.

Step 503, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

In the embodiment of the present disclosure, step 501 to step 503 may be implemented in any one of the embodiments of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

To sum up, in response to the fact that at least one radio channel measurement quantity of the first UE meets the corresponding satisfaction condition, it is determined that the path switching condition is satisfied, thus, when the at least one radio channel measurement quantity of the first UE meets the corresponding satisfaction condition, from The third UE is selected from at least one second UE, and a path switch is initiated to the third UE, which improves the robustness of the path switch.

An embodiment of the present disclosure provides another path switching method. FIG. 6 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure. The path switching method can be applied to the first UE, and the path switching method can be independently The execution may also be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in the related art.

As shown in Figure 6, the path switching method may include the following steps:

Step 601, receiving a path switching instruction, wherein the path switching instruction includes: a path switching condition for triggering path switching.

Step 602, in response to the fact that at least one radio channel measurement quantity of the first UE meets the corresponding satisfaction condition, determine that the path switching condition is met; wherein, the at least one radio channel measurement quantity includes at least one of the following: the first UE and the second UE The first signal received power between UEs, and the second signal received power between the first UE and the serving cell, where the first signal received power corresponds to the satisfaction condition that the first signal received power is greater than the corresponding first signal received power For the threshold value, the condition corresponding to the received power of the second signal is that the received power of the second signal is smaller than the corresponding second threshold value.

As a possible implementation, when the first UE is connected to the network device through the relay UE, at least one wireless channel measurement quantity may include: the first signal reception power between the first UE and the second UE, the first signal reception power The satisfying condition corresponding to the power is that the received power of the first signal is greater than the corresponding threshold value. Wherein, the first UE is a remote UE, and the second UE is an optional relay UE.

As another possible implementation manner, when the first UE is directly connected to the network device, at least one radio channel measurement quantity may include: the second signal received power between the first UE and the serving cell to which it belongs, and/or, the first For the first signal received power between the UE and the second UE, the corresponding satisfaction condition of the second signal received power is that the second signal received power is less than the corresponding second threshold value, and the corresponding satisfaction condition of the first signal received power is, The received power of the first signal is greater than a first threshold.

Wherein, it should be noted that the first signal received power between the first UE and the second UE may include at least one of the following powers: the reference signal received power between the first UE and the second UE, the first UE The received power of the discovery signal with the second UE; the threshold value corresponding to the received power of the reference signal and the threshold value corresponding to the received power of the discovery signal may be the same or different.

Step 603, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

In the embodiment of the present disclosure, step 601 to step 603 may be implemented in any of the embodiments of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

To sum up, in response to the at least one radio channel measurement quantity of the first UE meeting the corresponding satisfaction condition, it is determined that the path switching condition is satisfied. Wherein, the at least one radio channel measurement quantity includes at least one of the following: a first signal received power between the first UE and the second UE, and a second signal received power between the first UE and the serving cell to which it belongs, wherein , the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding first threshold value, and the satisfaction condition corresponding to the second signal received power is that the second signal received power is less than the corresponding second threshold value , thus, when at least one radio channel measurement quantity of the first UE meets the corresponding satisfying condition, the third UE is selected from at least one second UE, and path switching is initiated to the third UE, which improves the robustness of path switching Stickiness.

An embodiment of the present disclosure provides another path switching method. FIG. 7 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure. The path switching method can be applied to the first UE, and the path switching method can be independently The execution may also be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in the related art.

As shown in Figure 7, the path switching method may include the following steps:

Step 701, receiving a path switching instruction, wherein the path switching instruction includes: a path switching condition, which is used to trigger path switching.

Step 702, in response to the at least one radio channel measurement quantity of the first UE meeting the corresponding satisfaction condition, wherein the at least one radio channel measurement quantity includes at least one of the following: the first UE and the second UE Signal received power; and the third signal received power between the first UE and the current serving UE; wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding third threshold value; the third The satisfying condition corresponding to the received signal power is that the third received signal power is smaller than the corresponding fourth threshold value.

As a possible implementation manner, when the first UE is connected to the target UE through the relay UE, at least one radio channel measurement quantity may include: a third signal received power between the first UE and the current serving UE, and/or, The first signal received power between the first UE and the second UE. Wherein, the satisfaction condition corresponding to the received power of the first signal is that the received power of the first signal is greater than the corresponding third threshold value; the satisfied condition corresponding to the received power of the third signal is that the received power of the third signal is less than the corresponding fourth threshold value, the first UE is the remote UE, the second UE is the optional relay UE, and the current serving UE is the current serving relay UE.

As another possible implementation manner, when the first UE is directly connected to the target UE, the at least one radio channel measurement quantity may include: first signal received power between the first UE and the second UE. Wherein, the satisfying condition corresponding to the first signal received power is that the first signal received power is greater than a corresponding third threshold value.

Step 703, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

In the embodiment of the present disclosure, step 701 to step 703 may be implemented in any one of the embodiments of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

In summary, at least one radio channel measurement in response to the first UE meets the corresponding satisfaction conditions, wherein the at least one radio channel measurement includes at least one of the following: the first UE and the second UE Signal received power; and the third signal received power between the first UE and the current serving UE; wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding third threshold value; the third The satisfying condition corresponding to the received signal power is that the third received signal power is smaller than the corresponding fourth threshold value. Therefore, when at least one radio channel measurement quantity of the first UE meets the corresponding satisfaction condition, the third UE is selected from at least one second UE, and path switching is initiated to the third UE, which improves the robustness of path switching sex.

An embodiment of the present disclosure provides another path switching method. FIG. 8 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure. The path switching method can be applied to the first UE, and the path switching method can be independently The execution may also be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in the related art.

As shown in Figure 8, the path switching method may include the following steps:

Step 801, receiving a path switching instruction, wherein the path switching instruction includes: a path switching condition for triggering path switching.

Step 802, in response to the fact that at least one radio channel measurement quantity of the first UE meets the corresponding satisfaction condition, and the continuous satisfaction duration is greater than or equal to the specified maintenance duration, determine that the path switching condition is satisfied. It should be understood that, in some cases (for example, when the first UE is moving), the radio channel measurement amount of the first UE may be low. Therefore, in order to improve the robustness of the path switching, it is determined that the path switching is satisfied. The condition requires not only that at least one radio channel measurement quantity of the first UE meets the corresponding satisfying condition, but also requires that the continuous satisfying duration is greater than or equal to the specified maintenance duration. .

Step 803, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

In the embodiment of the present disclosure, step 801 to step 803 may be implemented in any one of the embodiments of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

To sum up, when at least one wireless channel measurement quantity of the first UE meets the corresponding satisfaction condition, and the continuous satisfaction duration is greater than or equal to the specified maintenance duration, it is determined that the path switching condition is satisfied. Therefore, determining that the path switching condition is satisfied requires not only At least one radio channel measurement quantity of the first UE meets the corresponding satisfying condition, and the continuous satisfying duration needs to be greater than or equal to the specified maintaining duration, which further improves the robustness of path switching.

An embodiment of the present disclosure provides another path switching method. FIG. 9 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure. The path switching method can be applied to a UE, and the path switching method can be executed independently. It may also be implemented in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be implemented in combination with any technical solution in the related art.

As shown in Figure 9, the path switching method may include the following steps:

Step 901: Receive a path switching instruction, where the path switching instruction includes: path switching conditions and a target cell identifier.

Wherein, the path switch condition is used to trigger the path switch; the target cell identifier is used to indicate that the cell identifier of the serving cell to which the third UE belongs needs to be consistent with the target cell identifier.

In the embodiment of the present disclosure, when the first UE establishes a connection with the target cell through a relay UE, or when the first UE is directly connected to the target cell, the path switching instruction may not only include: path switching conditions, used to trigger the path The handover may further include: a target cell identity, used to indicate that the cell identity of the serving cell to which the third UE belongs needs to be consistent with the target cell identity.

Step 902, determine whether the path switching condition is satisfied.

Step 903, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

In the embodiment of the present disclosure, step 902 to step 903 may be implemented in any one of the embodiments of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

To sum up, the path switching instruction is received, wherein the path switching instruction includes: a path switching condition and a target cell identity, wherein the path switching condition is used to trigger path switching, and the target cell identity is used to indicate the cell identity of the serving cell to which the third UE belongs It needs to be consistent with the identity of the target cell. Therefore, the path switching instruction not only includes: the path switching condition, which is used to trigger the path switching, but also includes: the target cell identity, which is used to indicate that the cell identity of the serving cell to which the third UE belongs needs to be consistent with the target cell If the identifiers are consistent, the first UE can accurately establish a connection with the target cell through the third UE.

An embodiment of the present disclosure provides another path switching method. FIG. 10 is a schematic flowchart of another path switching method provided by an embodiment of the present disclosure. The path switching method can be applied to a UE, and the path switching method can be executed independently. It may also be implemented in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be implemented in combination with any technical solution in the related art.

As shown in Figure 10, the path switching method may include the following steps:

Step 1001, receiving a path switching instruction, wherein the path switching instruction includes: path switching conditions and a target UE identifier.

Wherein, the path switching condition is used to trigger the path switching; the target UE identifier is used to indicate that the UE corresponding to the third UE and the target UE identifier needs to be able to establish a sidelink connection.

In the embodiment of the present disclosure, when the first UE establishes a connection with the target UE through the relay UE, or when the first UE is directly connected to the target UE, the path switching instruction not only includes: the path switching condition, which is used to trigger the path switching, The path switching instruction may further include: a target UE identifier, which is used to indicate that the UE corresponding to the third UE and the target UE identifier needs to be able to establish a sidelink connection.

Wherein, the UE corresponding to the third UE and the target UE identifier can establish a sidelink connection, and the condition that needs to be met is that at least one UE identifier indicated by the third UE that can establish the sidelink connection includes the target UE identifier. Wherein, the third UE may indicate that at least one UE identity capable of establishing the sidelink connection includes the target UE identity in the manner of unicast, groupcast and broadcast.

Step 1002, determine whether path switching conditions are met.

Step 1003, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

In the embodiment of the present disclosure, step 1002 to step 1003 may be implemented in any one of the embodiments of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

In summary, by receiving the path switching instruction, wherein the path switching instruction includes: path switching conditions, used to trigger path switching, target UE identifier, used to indicate that the UE corresponding to the third UE and the target UE identifier needs to be able to establish a sidelink connection, by Here, the path switching instruction not only includes: path switching conditions, used to trigger path switching, the path switching instruction also includes: target UE identifier, used to indicate that the UE corresponding to the third UE and the target UE identifier needs to be able to establish a sidelink connection, the first The UE can accurately establish a connection with the target UE through the third UE.

The embodiment of the present disclosure provides another path switching method. FIG. 11 is a schematic flowchart of another path switching method provided by the embodiment of the present disclosure. The path switching method can be applied to the UE, and the path switching method can be executed independently. It may also be implemented in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be implemented in combination with any technical solution in the related art.

As shown in Figure 11, the path switching method may include the following steps:

Step 1101, receiving a path switching instruction, wherein the path switching instruction includes: a path switching condition for triggering path switching.

Step 1102, determine whether path switching conditions are met.

Step 1103, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

Step 1104: During the reestablishment process of the first UE, in response to the UE identity corresponding to the selected fourth UE being a second UE identity in the path switching instruction, initiate path switching to the selected fourth UE.

In order to enable the first UE to quickly restore the connection when the link fails, when the first UE link fails, for example, when the first UE path switch fails or the radio link fails, the first UE can perform re-establishment, in the embodiment of the present disclosure In the reestablishment process of the first UE, when the selected fourth UE is the second UE in the path switching instruction, path switching may be initiated to the selected fourth UE. Wherein, the fourth UE may serve as a relay UE connecting the first UE to the network device or to the target UE.

As an example, in response to that the UE identity corresponding to the selected fourth UE may be a second UE identity in the path switching instruction, path switching is initiated to the selected fourth UE.

In the embodiment of the present disclosure, steps 1101-1103 may be implemented in any one of the embodiments of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

To sum up, during the reestablishment process of the first UE, in response to the UE identity corresponding to the selected fourth UE being a second UE identity in the path switching instruction, path switching is initiated to the selected fourth UE. Therefore, during the reestablishment process of the first UE, when the selected fourth UE is a second UE in the path switching instruction, the path switching can be directly initiated to the selected fourth UE, and the first UE and the network can be quickly established. The connection between devices or target UEs, so that the connection can be quickly restored when the first UE link fails.

The embodiment of the present disclosure provides another path switching method. FIG. 12 is a schematic flowchart of another path switching method provided by the embodiment of the present disclosure. The path switching method can be applied to the UE, and the path switching method can be executed independently. It may also be implemented in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be implemented in combination with any technical solution in the related art.

As shown in Figure 12, the path switching method may include the following steps:

Step 1201, receiving a path switch command, wherein the path switch command includes: a path switch condition for triggering a path switch.

Step 1202, determine whether path switching conditions are met.

Step 1203, in response to satisfying the path switching condition, select a third UE from at least one second UE, and initiate path switching to the third UE.

Step 1204, during the re-establishment process of the first UE, in response to the UE identity corresponding to the selected fifth UE being a second UE identity in the path switching instruction, and the cell identity of the serving cell to which the fifth UE belongs is the same as in the path switching instruction The IDs of the target cells are the same, and a path switch is initiated to the selected fifth UE.

In order to enable the first UE to quickly restore the connection when the link fails, when the first UE link fails, for example, when the first UE path switch fails or the radio link fails, the first UE can perform re-establishment, in the embodiment of the present disclosure In the re-establishment process of the first UE, the first UE may perform cell reselection, and when the reselected cell is the target cell in the path switching instruction, the first UE may retry to perform path reselection to the reselected cell. switch.

As an example, in response to the fact that the UE identity corresponding to the selected fifth UE is a second UE identity in the path switching instruction, and the cell identity of the serving cell to which the fifth UE belongs is consistent with the target cell identity in the path switching instruction, send The selected fifth UE initiates path switching. Wherein, the fifth UE may serve as a relay UE for connecting the first UE to the target cell.

In the embodiment of the present disclosure, step 1201 to step 1203 may be implemented in any one of the embodiments of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

To sum up, during the reestablishment process of the first UE, the UE identity corresponding to the selected fifth UE is a second UE identity in the path switching instruction, and the cell identity of the serving cell to which the fifth UE belongs is related to the path switching instruction The identity of the target cell in the target cell is the same, and a path switch is initiated to the selected fifth UE. Therefore, in the reestablishment process of the first UE, the path switch between the first UE and the serving cell can be quickly established by initiating a path switch to the selected fifth UE. connection, so that the connection can be quickly restored when the first UE link fails.

The embodiment of the present disclosure provides another path switching method. FIG. 13 is a schematic flowchart of another path switching method provided by the embodiment of the present disclosure. The path switching method can be applied to the UE, and the path switching method can be executed independently. It may also be implemented in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be implemented in combination with any technical solution in the related art.

As shown in Figure 13, the path switching method may include the following steps:

Step 1301, receiving a path switching instruction, wherein the path switching instruction includes a path switching condition for triggering path switching. Wherein, the path switching instruction further includes: a second UE identity corresponding to at least one second UE; and a connection establishment configuration corresponding to each second UE identity.

Step 1302: In the reestablishment process of the first UE, in response to the UE identity corresponding to the selected fourth UE being a second UE identity in the path switching instruction, initiate path switching to the selected fourth UE.

As an example, when the first UE performs cell reselection, when the reselected cell is a target cell in the path switch instruction, the first UE may retry path switching to the reselected cell.

Optionally, in response to the fact that the UE identity corresponding to the selected fifth UE is a second UE identity in the path switching instruction, and the cell identity of the serving cell to which the fifth UE belongs is consistent with the target cell identity in the path switching instruction, send The fifth UE initiates path switching. Wherein, the fifth UE may serve as a relay UE for connecting the first UE to the target cell.

To sum up, in the reestablishment process of the first UE, in response to the UE identity corresponding to the selected fourth UE being a second UE identity in the path switching instruction, a path switch is initiated to the selected fourth UE. During the re-establishment process of a UE, when the selected fourth UE is a second UE in the path switching instruction, the path switching can be directly initiated to the selected fourth UE, and the connection between the first UE and the network device or target UE can be quickly established. Therefore, when the first UE link fails, the connection can be quickly restored.

In the path switching method of the embodiment of the present disclosure, the first UE receives the path switching instruction, wherein the path switching instruction includes the path switching condition, and is used to trigger the path switching; and determines whether the path switching condition is satisfied; in response to satisfying the path switching condition, from A third UE is selected from the at least one second UE, and a path switch is initiated to the third UE. In this method, the first UE receives the path switching instruction in advance, and determines whether the path switching condition in the path switching instruction is satisfied, and when the path switching condition is satisfied, selects the third UE from at least one second UE, and sends the third UE to the third UE. The UE initiates a path switch. Therefore, by receiving the path switch command in advance, determining whether the path switch condition in the path switch command is met, and triggering the path switch when the path switch condition in the path switch command is met, the UE can be prevented from failing in a timely manner. A problem where the wireless link fails due to receiving a handover command.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

The embodiment of the present disclosure provides another path switching method, and Fig. 14 is a schematic flowchart of another path switching method provided by the embodiment of the present disclosure. The path switching method can be applied to network devices.

As shown in Figure 14, the path switching method may include the following steps:

Step 1401, sending a path switching instruction to the first user equipment UE, wherein the path switching instruction includes: a path switching condition, used to trigger path switching.

As an example, the first UE is directly connected to the network device, and the network device may send a path switching instruction to the first UE.

As another example, the first UE may not be directly connected to the network device, and the network device sends the path switching instruction to the first UE through the relay UE.

In the embodiment of the present disclosure, after receiving the path switching instruction, the first UE may determine whether the path switching condition in the path switching instruction is satisfied, and when the path switching condition is satisfied, select the third UE from at least one second UE, and Initiate a path switch to the third UE.

As a possible implementation, in order that the first UE can initiate path switching to the third UE among the second UEs and establish a connection on the corresponding path, the path switching instruction further includes: at least one UE identity corresponding to the second UE , and a connection establishment configuration corresponding to each second UE identity, wherein the UE identity corresponding to the third UE used for path switching exists in at least one second UE identity.

To sum up, by sending the path switch command to the first UE, the path switch command includes: a path switch condition, which is used to trigger the path switch. Therefore, by sending the path switching instruction to the first UE, when the first UE meets the path switching condition in the path switching instruction, path switching is triggered, which can avoid the problem that the UE cannot receive the switching instruction in time and cause radio link failure.

As a possible implementation manner, the path switching condition includes at least one radio channel measurement quantity of the first UE, all of which meet the corresponding satisfaction condition.

As a possible implementation manner, the at least one radio channel measurement quantity includes: a first signal received power between the first UE and the second UE, and a second signal received power between the first UE and the serving cell to which it belongs, where , the satisfaction condition corresponding to the received power of the first signal is that the received power of the first signal is greater than the corresponding first threshold value; the satisfied condition corresponding to the received power of the second signal is that the received power of the second signal is less than the corresponding second threshold value .

As a possible implementation, the at least one radio channel measurement quantity includes at least one of the following: the first signal received power between the first UE and the second UE, and the third signal received power between the first UE and the current serving UE Signal received power; wherein, the satisfying condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding third threshold; and the satisfying condition corresponding to the third signal received power is that the third signal received power is less than the corresponding fourth threshold.

As a possible implementation manner, the first signal received power between the first UE and the second UE includes at least one of the following powers: reference signal received power between the first UE and the second UE; and The discovery signal received power between the first UE and the second UE, wherein the threshold value corresponding to the reference signal received power is the same as or different from the threshold value corresponding to the discovery signal received power.

As a possible implementation manner, the path switching condition further includes: specifying a maintenance period, which is used to indicate that the at least one wireless channel measurement quantity needs to meet a corresponding satisfaction condition within the maintenance period.

As a possible implementation manner, the path switching instruction further includes: a target cell identifier, configured to indicate that the cell identifier of the serving cell to which the third UE belongs needs to be consistent with the target cell identifier.

As a possible implementation manner, the path switching instruction further includes: a target UE identifier, which is used to indicate that the UE corresponding to the third UE and the target UE identifier needs to be able to establish a sidelink connection.

As a possible implementation, the third UE and the UE corresponding to the target UE identifier can establish a sidelink connection, and the condition that needs to be met is that at least one UE identifier indicated by the third UE that can establish a sidelink connection includes the target UE logo.

It should be noted that, the explanations of the path switching method performed on the first UE in any of the above embodiments in FIG. 3 to FIG. 13 are also applicable to the path switching method performed on the network device in this embodiment. I won't go into details here.

In the path switching method of the embodiment of the present disclosure, the path switching instruction is sent to the first standby UE, wherein the path switching instruction includes: a path switching condition, which is used to trigger the path switching, thus, by sending the path switching instruction to the first UE in advance When the first UE satisfies the path switching condition in the path switching instruction, the path switching is triggered, which can avoid the problem that the UE cannot receive the switching instruction in time, resulting in radio link failure.

Corresponding to the path switching method provided by the embodiments of FIG. 3 to FIG. 13 above, the present disclosure also provides a path switching device. Correspondingly, therefore, the implementation of the path switching method is also applicable to the path switching apparatus provided in the embodiments of the present disclosure, and will not be described in detail in the embodiments of the present disclosure.

Fig. 15 is a schematic structural diagram of a path switching device provided by an embodiment of the present disclosure. The apparatus is applied to a first UE.

As shown in FIG. 15 , the path switching device 1500 may include: a transceiver unit 1510 and a processing unit 1520 .

Wherein, the transceiver unit 1510 is configured to receive a path switching instruction, wherein the path switching instruction includes: a path switching condition, used to trigger path switching; the processing unit 1520, configured to determine whether the path switching condition is met, and in response to satisfying the path switching condition, Select a third UE from at least one second UE, and initiate path switching to the third UE.

As a possible implementation manner of the embodiment of the present disclosure, the path switching instruction further includes at least one of the following: a UE identity corresponding to at least one second UE, and a connection establishment configuration corresponding to each second UE identity.

As a possible implementation manner of the embodiment of the present disclosure, the processing unit 1520 is further configured to: determine that the path switching condition is satisfied in response to at least one radio channel measurement quantity of the first UE meeting a corresponding satisfying condition.

As a possible implementation of an embodiment of the present disclosure, the at least one radio channel measurement quantity includes at least one of the following: the first signal received power between the first UE and the second UE, and the first UE and the service to which it belongs The second received signal power between cells, wherein the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding first threshold value; the satisfied condition corresponding to the second signal received power is that the second The received signal power is less than the corresponding second threshold.

As a possible implementation of an embodiment of the present disclosure, the at least one radio channel measurement quantity includes at least one of the following: the first signal received power between the first UE and the second UE; and the first UE and the current serving The third signal received power between UEs; wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding third threshold value; the satisfaction condition corresponding to the third signal received power is that the third The received signal power is less than the corresponding fourth threshold.

As a possible implementation of the embodiments of the present disclosure, the first signal reception power between the first UE and the second UE includes at least one of the following powers: reference signal reception between the first UE and the second UE power, and the discovery signal received power between the first UE and the second UE; wherein, the threshold value corresponding to the reference signal received power is the same as or different from the threshold value corresponding to the discovery signal received power.

As a possible implementation of the embodiment of the present disclosure, the processing unit 1520 is further configured to: respond to the at least one radio channel measurement of the first UE meeting the corresponding satisfaction condition, and the continuous satisfaction duration is greater than or equal to the specified maintenance When the duration is longer, it is determined that the path switching condition is met.

As a possible implementation manner of the embodiment of the present disclosure, the path switching instruction further includes: a target cell identifier, used to indicate that the cell identifier of the serving cell to which the third UE belongs needs to be consistent with the target cell identifier.

As a possible implementation manner of the embodiment of the present disclosure, the path switching instruction further includes: a target UE identifier, used to indicate that the third UE and the UE corresponding to the target UE identifier need to be able to establish a sidelink connection.

As a possible implementation of this embodiment of the present disclosure, the UE corresponding to the third UE and the target UE ID can establish a sidelink connection, and the condition to be satisfied is that at least one UE ID indicated by the third UE that can establish a sidelink connection includes the target UE ID.

As a possible implementation of the embodiments of the present disclosure, during the re-establishment process of the first UE, in response to the UE identity corresponding to the selected fourth UE being a second UE identity in the path switching instruction, the selected fourth UE Four UEs initiate path switching.

As a possible implementation of the embodiments of the present disclosure, during the reestablishment process of the first UE, the UE identity corresponding to the selected fifth UE is a second UE identity in the path switching instruction, and the fifth UE belongs to The cell identity of the serving cell is consistent with the target cell identity in the path switching instruction, and path switching is initiated to the selected fifth UE.

In the path switching apparatus of the embodiment of the present disclosure, the first UE receives the path switching instruction, wherein the path switching instruction includes: a path switching condition, used to trigger the path switching; and determining whether the path switching condition is satisfied; in response to satisfying the path switching condition, Selecting a third UE to be switched from at least one second UE, and initiating path switching to the third UE. Therefore, by receiving the path switching instruction in advance and determining whether the path switching condition in the path switching instruction is met, and triggering the path switching when the path switching condition in the path switching instruction is met, it is possible to prevent the UE from failing to receive the switching instruction in time. Problem with wireless link failure.

Corresponding to the path switching method provided by the above-mentioned embodiment in FIG. 14 , the present disclosure also provides a path switching method device. Since the path switching device provided by the embodiment of the present disclosure corresponds to the path switching method provided in the above-mentioned embodiment in FIG. 14 , the The implementation of the path switching method is also applicable to the path switching apparatus provided in the embodiments of the present disclosure, and will not be described in detail in the embodiments of the present disclosure.

FIG. 16 is a schematic structural diagram of a path switching device provided by an embodiment of the present disclosure. The device is applied to network equipment.

As shown in FIG. 16 , the path switching device 1600 may include: a transceiver unit 1610 .

Wherein, the transceiving unit 1610 is configured to send a path switching instruction to the first user equipment UE, wherein the path switching instruction includes: a path switching condition, which is used to trigger path switching.

As a possible implementation of the embodiments of the present disclosure, the path switching instruction further includes at least one of the following: a UE identity corresponding to at least one second UE; and a connection establishment configuration corresponding to each second UE identity, wherein, using The UE identity corresponding to the third UE performing path switching exists in at least one second UE identity.

As a possible implementation manner of the embodiments of the present disclosure, the path switching condition includes: at least one radio channel measurement quantity of the first UE, and each radio channel measurement quantity meets a corresponding satisfaction condition.

As a possible implementation of the embodiments of the present disclosure, the at least one radio channel measurement quantity includes: the received power of the first signal between the first UE and the second UE, and the received power of the second signal between the first UE and the serving cell to which it belongs. Received power, wherein, the satisfaction condition corresponding to the first signal reception power is that the first signal reception power is greater than the corresponding first threshold value; the satisfaction condition corresponding to the second signal reception power is that the second signal reception power is less than the corresponding first threshold value Two thresholds.

As a possible implementation of the embodiments of the present disclosure, the at least one wireless channel measurement quantity includes at least one of the following: the first signal received power between the first UE and the second UE, and the first UE and the current serving UE The third signal received power between; wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than the corresponding third threshold value; and the satisfaction condition corresponding to the third signal received power is that the third The received signal power is less than the corresponding fourth threshold.

As a possible implementation of the embodiments of the present disclosure, the first signal received power between the first UE and the second UE includes at least one of the following powers: reference signal received power between the first UE and the second UE ; and the received power of the discovery signal between the first UE and the second UE, wherein the threshold value corresponding to the received power of the reference signal is the same as or different from the threshold value corresponding to the received power of the discovery signal.

As a possible implementation manner of the embodiment of the present disclosure, the path switching condition further includes: specifying a maintenance period, which is used to indicate that at least one radio channel measurement quantity needs to meet a corresponding satisfaction condition within the maintenance period.

As a possible implementation of this embodiment of the present disclosure, the third UE and the UE corresponding to the target UE identity can establish a sidelink connection, and the condition that needs to be met is that at least one UE identity that can establish a sidelink connection indicated by the third UE includes The target UE identifier.

The path switching apparatus in the embodiment of the present disclosure sends a path switching instruction to the first UE, wherein the path switching instruction includes: a path switching condition, which is used to trigger the path switching, thus, by sending the path switching instruction to the first UE in advance, When the first UE satisfies the path switching condition in the path switching instruction, the path switching is triggered, which can avoid the problem that the UE cannot receive the switching instruction in time and cause the wireless link to fail.

In order to realize the above embodiments, the present disclosure also proposes a path switching device, which includes a processor and a memory, where a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the steps shown in FIGS. Figure 13 shows the method described in the embodiment.

In order to realize the above-mentioned embodiments, the present disclosure also proposes another path switching device, which includes a processor and a memory, where a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes FIG. 14 The method described in the examples.

In order to achieve the above embodiments, the present disclosure also proposes a path switching device, including: a processor and an interface circuit; the interface circuit is used to receive code instructions and transmit them to the processor; the processor is used to run code instructions to execute The method described in the embodiment shown in Fig. 3 to Fig. 13 .

In order to achieve the above embodiments, the present disclosure also proposes another path switching device, including: a processor and an interface circuit; the interface circuit is used to receive code instructions and transmit them to the processor; the processor is used to run code instructions to Execute the method described in the embodiment in FIG. 14 .

In order to implement the above-mentioned embodiments, the present disclosure proposes a computer-readable storage medium for storing instructions, and when the instructions are executed, the methods of the embodiments described in FIGS. 3 to 13 are implemented.

In order to implement the above-mentioned embodiments, the present disclosure proposes another computer-readable storage medium for storing instructions, and when the instructions are executed, the method of the embodiment shown in FIG. 14 is implemented.

As shown in FIG. 17 , FIG. 17 is a schematic structural diagram of a network device provided by an embodiment of the present disclosure. Referring to FIG. 17 , network device 1700 includes processing component 1722 , which further includes at least one processor, and a memory resource represented by memory 1732 for storing instructions executable by processing component 1722 , such as application programs. The application programs stored in memory 1732 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 1722 is configured to execute instructions, so as to perform any of the foregoing methods applied to the network device, for example, the method as described in the embodiment of FIG. 14 .

Network device 1700 may also include a power component 1726 configured to perform power management of network device 1700, a wired or wireless network interface 1750 configured to connect network device 1700 to a network, and an input output (I/O) interface 1758 . The network device 1700 can operate based on an operating system stored in the memory 1732, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

Fig. 18 is a block diagram of a user equipment provided by an embodiment of the present disclosure. For example, user equipment 1800 may be a mobile phone, computer, digital broadcast user equipment, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.

18, user equipment 1800 may include at least one of the following components: a processing component 1802, a memory 1804, a power supply component 1806, a multimedia component 1808, an audio component 1810, an input/output (I/O) interface 1812, a sensor component 1814, and Communication component 1816.

The processing component 1802 generally controls the overall operation of the user device 1800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1802 may include at least one processor 1820 to execute instructions, so as to complete all or part of the steps of the above method. Additionally, processing component 1802 can include at least one module that facilitates interaction between processing component 1802 and other components. For example, processing component 1802 may include a multimedia module to facilitate interaction between multimedia component 1808 and processing component 1802 .

The memory 1804 is configured to store various types of data to support operations at the user equipment 1800 . Examples of such data include instructions for any application or method operating on user device 1800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1604 can be realized by any type of volatile or non-volatile memory device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 1806 provides power to various components of the user equipment 1800 . Power components 1806 may include a power management system, at least one power supply, and other components associated with generating, managing, and distributing power for user equipment 1800 .

The multimedia component 1808 includes a screen providing an output interface between the user equipment 1800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes at least one touch sensor to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or slide action, but also detect a wake-up time and pressure related to the touch or slide operation. In some embodiments, the multimedia component 1808 includes a front camera and/or a rear camera. When the user equipment 1800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.

The audio component 1810 is configured to output and/or input audio signals. For example, the audio component 1810 includes a microphone (MIC), which is configured to receive an external audio signal when the user equipment 1800 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode. Received audio signals may be further stored in memory 1804 or sent via communication component 1816 . In some embodiments, the audio component 1810 also includes a speaker for outputting audio signals.

The I/O interface 1812 provides an interface between the processing component 1802 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

The sensor component 1814 includes at least one sensor for providing various aspects of status assessment for the user equipment 1800 . For example, the sensor component 1814 can detect the on/off status of the user equipment 1800, the relative positioning of components, such as the display and the keypad of the user equipment 1800, the sensor component 1814 can also detect the user equipment 1800 or a user equipment 1800 Changes in position of components, presence or absence of user contact with user device 1800 , user device 1800 orientation or acceleration/deceleration and temperature changes in user device 1800 . Sensor assembly 1814 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 1814 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications. In some embodiments, the sensor component 1814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component 1816 is configured to facilitate wired or wireless communication between the user equipment 1800 and other devices. The user equipment 1800 can access a wireless network based on communication standards, such as WiFi, 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 1816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, user equipment 1800 may be powered by at least one Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Arrays (FPGA), controllers, microcontrollers, microprocessors, or other electronic components are implemented for performing the methods shown in FIGS. 3 to 13 above.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 1804 including instructions, which can be executed by the processor 1820 of the user equipment 1800 to implement the above-mentioned FIG. 3 to FIG. 13 method shown. For example, the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

Other embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present invention and include common knowledge or conventional technical means in the technical field not disclosed in this disclosure . The specification and examples are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

In order to realize the above-mentioned embodiments, the embodiments of the present disclosure also provide a communication device. The communication device may be a network device, or a user device, or a chip, a chip system, or a processor that supports the network device to implement the above method. , may also be a chip, a chip system, or a processor that supports the user equipment to implement the above method. The device can be used to implement the method described in any of the above method embodiments, and for details, refer to the description in the above method embodiments.

Wherein, the communication device may include one or more processors. The processor may be a general purpose processor or a special purpose processor or the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, user equipment, user equipment chips, DU or CU, etc.) and execute computer programs , to process data for computer programs.

Optionally, the communication device may further include one or more memories, on which computer programs may be stored, and the processor executes the computer programs, so that the communication device executes the methods described in the foregoing method embodiments. Optionally, data may also be stored in the memory. The communication device and the memory can be set separately or integrated together.

Optionally, the communication device may further include a transceiver and an antenna. The transceiver may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function. The transceiver may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function.

Optionally, the communication device may further include one or more interface circuits. The interface circuit is used to receive code instructions and transmit them to the processor. The processor executes the code instructions to enable the communication device to execute the method described in any of the foregoing method embodiments.

In one implementation, the processor may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together. The above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transmission.

In an implementation manner, the processor may store a computer program, and the computer program runs on the processor to enable the communication device to execute the method described in any one of the above method embodiments. A computer program may be embedded in a processor, in which case the processor may be implemented by hardware.

In an implementation manner, the communication device may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented in IC (Integrated Circuit, integrated circuit), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, ASIC (Application Specific Integrated Circuit, application specific integrated circuit), PCB (Printed Circuit Board, printed circuit board), electronic equipment, etc. The processor and transceiver can also be manufactured with various IC process technologies, such as CMOS (Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor), NMOS (nMetal-Oxide-Semiconductor, N-type Metal Oxide Semiconductor), PMOS ( Positive Channel Metal Oxide Semiconductor, P-type metal oxide semiconductor), BJT (Bipolar Junction Transistor, bipolar junction transistor), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiments may be a network device or a user device, but the scope of the communication device described in the present disclosure is not limited thereto. A communication device may be a stand-alone device or may be part of a larger device. For example the communication device may be:

(1) Stand-alone integrated circuits ICs, or chips, or chip systems or subsystems;

(2) A set of one or more ICs, optionally, the set of ICs may also include storage components for storing data and computer programs;

(3) ASIC, such as modem (Modem);

(4) Modules that can be embedded in other devices;

(5) Receivers, user equipment, intelligent user equipment, cellular phones, wireless equipment, handsets, mobile units, vehicle equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others and so on.

For the case where the communications device may be a chip or system-on-a-chip, the chip may include a processor and an interface. Wherein, the number of processors may be one or more, and the number of interfaces may be more than one.

Optionally, the chip also includes a memory, which is used to store necessary computer programs and data.

Those skilled in the art can also understand that various illustrative logical blocks and steps listed in the embodiments of the present disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and overall system design requirements. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present disclosure.

The present disclosure also provides a computer program product, which implements the functions of the above-mentioned embodiments in FIG. 3 to FIG. 13 when executed by a computer.

The present disclosure also provides a computer program product, which realizes the functions of the above-mentioned embodiment in FIG. 14 when executed by a computer.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on the computer, all or part of the processes or functions according to the embodiments of the present disclosure will be generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer program can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program can be downloaded from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, DSL (Digital Subscriber Line, Digital Subscriber Line)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. Described usable medium can be magnetic medium (for example, floppy disk, hard disk, magnetic tape), optical medium (for example, high-density DVD (Digital Video Disc, digital video disc)), or semiconductor medium (for example, SSD (Solid State Disk, solid state disk) hard disk)) etc.

Those of ordinary skill in the art can understand that the first, second, and other numbers involved in the present disclosure are only for convenience of description, and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the sequence.

At least one in the present disclosure can also be described as one or more, and a plurality can be two, three, four or more, and the present disclosure is not limited. In the embodiments of the present disclosure, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in the "first", "second", "third", "A", "B", "C" and "D" have no sequence or order of magnitude among the technical features described.

The correspondence shown in each table in the present disclosure may be configured or predefined. The values of the information in each table are just examples, and may be configured as other values, which are not limited in the present disclosure. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships shown in the tables. For example, in the table in the present disclosure, the corresponding relationship shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, for example, splitting, merging, and so on. The names of the parameters shown in the titles of the above tables may also adopt other names understandable by the communication device, and the values or representations of the parameters may also be other values or representations understandable by the communication device. When the above tables are implemented, other data structures can also be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables can be used wait.

Predefinition in the present disclosure can be understood as definition, predefinition, storage, prestorage, prenegotiation, preconfiguration, curing, or prefiring.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementation should not be considered beyond the scope of the present disclosure.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The above is only a specific implementation of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope of the present disclosure. should fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the protection scope of the claims.

Claims

A path switching method, characterized in that it is applied to a first user equipment UE, and the method includes:

receiving a path switching instruction, wherein the path switching instruction includes a path switching condition for triggering path switching; and

determining whether the path switching condition is met;

In response to satisfying the path switch condition, select a third UE from at least one second UE, and initiate a path switch to the third UE.
The method according to claim 1, wherein the path switching instruction further includes at least one of the following:

at least one second UE identity corresponding to the second UE; and

Each second UE identifies a corresponding connection establishment configuration.
The method according to claim 1 or 2, wherein the determining whether the path switching condition is satisfied comprises:

In response to the at least one radio channel measurement quantity of the first UE meeting a corresponding satisfaction condition, determine that the path switching condition is satisfied.
The method according to claim 3, wherein the at least one radio channel measurement quantity includes at least one of the following: a first signal received power between the first UE and the second UE, and The second signal received power between the first UE and the serving cell to which it belongs, wherein,

The satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than a corresponding first threshold value;

The satisfaction condition corresponding to the second signal received power is that the second signal received power is less than a corresponding second threshold value.
The method according to claim 3, wherein the at least one wireless channel measurement comprises at least one of the following:

a first signal received power between the first UE and the second UE; and

The third signal reception power between the first UE and the current serving UE;

Wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than a corresponding third threshold value;

The satisfaction condition corresponding to the third signal received power is that the third signal received power is less than a corresponding fourth threshold value.
The method according to claim 4 or 5, wherein the first signal reception power between the first UE and the second UE includes at least one of the following powers:

Reference signal received power between the first UE and the second UE; and

The discovery signal received power between the first UE and the second UE, wherein the threshold value corresponding to the reference signal received power is the same as or different from the threshold value corresponding to the discovery signal received power.
The method according to claim 3, wherein the determining that the path switching condition is satisfied in response to at least one radio channel measurement quantity of the first UE conforming to a corresponding satisfying condition includes:

Determining that the path switching condition is met when at least one radio channel measurement quantity of the first UE meets a corresponding satisfaction condition, and the continuous satisfaction duration is greater than or equal to a specified maintenance duration.
The method according to claim 1, wherein the path switching instruction further includes: a target cell identifier, used to indicate that the cell identifier of the serving cell to which the third UE belongs needs to be consistent with the target cell identifier.
The method according to claim 1, wherein the path switching instruction further includes: a target UE identifier, for instructing the third UE that the UE corresponding to the target UE identifier needs to be able to establish a sidelink connection.
The method according to claim 9, wherein the UE corresponding to the third UE and the target UE identity can establish a sidelink connection, and the condition to be satisfied is that the third UE indicates that the sidelink connection can be established The at least one UE identity includes the target UE identity.
The method according to claim 2, characterized in that said method further comprises:

In the reestablishment process of the first UE, in response to the UE identity corresponding to the selected fourth UE being a second UE identity in the path switching instruction, initiate path switching to the selected fourth UE.
The method according to claim 2, characterized in that said method further comprises:

During the reestablishment process of the first UE, the UE identity corresponding to the selected fifth UE is a second UE identity in the path switching instruction, and the cell identity of the serving cell to which the fifth UE belongs is related to the path The identity of the target cell in the handover instruction is the same, and a path handover is initiated to the selected fifth UE.
A path switching method, characterized in that it is applied to a network device, the method comprising:

Sending a path switching instruction to the first user equipment UE, wherein the path switching instruction includes a path switching condition for triggering path switching.
The method according to claim 13, wherein the path switching instruction further includes at least one of the following:

A second UE identity corresponding to at least one second UE; and

The connection establishment configuration corresponding to each second UE identity, wherein the UE identity corresponding to the third UE used for path switching exists in the at least one second UE identity.
The method according to claim 13 or 14, wherein the path switching condition includes that at least one radio channel measurement quantity of the first UE meets a corresponding satisfying condition.
The method according to claim 15, wherein the at least one radio channel measurement quantity comprises: a first signal received power between the first UE and the second UE, and a signal received power between the first UE and the second UE The second signal received power between the serving cells to which they belong, wherein,

The satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than a corresponding first threshold value;

The satisfaction condition corresponding to the second signal received power is that the second signal received power is less than a corresponding second threshold value.
The method according to claim 15, wherein the at least one wireless channel measurement comprises at least one of the following:

a first signal received power between the first UE and the second UE; and

The third signal reception power between the first UE and the current serving UE;

Wherein, the satisfaction condition corresponding to the first signal received power is that the first signal received power is greater than a corresponding third threshold value; and

The satisfaction condition corresponding to the third signal received power is that the third signal received power is less than a corresponding fourth threshold value.
The method according to claim 16 or 17, wherein the first signal reception power between the first UE and the second UE includes at least one of the following powers:

Reference signal received power between the first UE and the second UE; and

The discovery signal reception power between the first UE and the second UE,

Wherein, the threshold value corresponding to the received power of the reference signal is the same as or different from the threshold value corresponding to the received power of the discovery signal.
The method according to claim 15, wherein the path switching condition further comprises: specifying a maintenance period for indicating that the at least one radio channel measurement quantity needs to meet the corresponding satisfaction condition within the maintenance period.
The method according to claim 13, wherein the path switching instruction further includes: a target cell identifier, used to indicate that the cell identifier of the serving cell to which the third UE belongs needs to be consistent with the target cell identifier.
The method according to claim 13, wherein the path switching instruction further includes: a target UE identifier, for instructing the third UE that the UE corresponding to the target UE identifier needs to be able to establish a sidelink connection.
The method according to claim 21, wherein the UE corresponding to the third UE and the target UE identity can establish a sidelink connection, and the condition to be satisfied is that at least the UE indicated by the third UE can establish a sidelink connection A UE identity includes the target UE identity.
A path switching device, characterized in that the device is applied to a first user equipment UE, and the device includes:

A transceiver unit, configured to receive a path switching instruction, wherein the path switching instruction includes path switching conditions for triggering path switching;

A processing unit, configured to determine whether the path switching condition is satisfied, select a third UE from at least one second UE, and initiate path switching to the third UE in response to satisfying the path switching condition.
A path switching device, characterized in that the device is applied to network equipment, and the device includes:

The transceiving unit is configured to send a path switching instruction to the first user equipment UE, wherein the path switching instruction includes: a path switching condition, configured to trigger path switching.
A path switching device, characterized in that the device includes a processor and a memory, and a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device performs the The method described in any one of claims 1 to 12.
A path switching device, characterized in that the device includes a processor and a memory, and a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device performs the The method described in any one of claims 13 to 22.
A path switching device, characterized by comprising: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to run the code instructions to execute the method according to any one of claims 1-12.
A path switching device, characterized by comprising: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to run the code instructions to execute the method according to any one of claims 13-22.
A computer-readable storage medium for storing instructions, which, when executed, cause the method according to any one of claims 1 to 12 to be implemented.
A computer-readable storage medium for storing instructions, which, when executed, cause the method according to any one of claims 13 to 22 to be implemented.