Relay handover methods, devices, remote terminals, relay terminals, and network-side equipment

Abstract

This application discloses a relay handover method, apparatus, remote terminal, relay terminal, and network-side device, belonging to the field of communications. The method in this application includes: a remote terminal acquiring first information of a relay terminal, the first information indicating the connection status of the relay terminal; the remote terminal performing a first operation based on the first information; the first operation includes at least one of the following: determining the connection status of the relay terminal; selecting a candidate relay terminal and sending second information to the network-side device, the second information including an identifier of the first candidate relay terminal selected by the remote terminal; sending third information to the network-side device, the third information including an identifier of a second candidate relay terminal; the second candidate relay terminal including some or all of the relay terminals that sent the first information.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a relay handover method, apparatus, remote terminal, relay terminal and network-side equipment. Background Technology

[0002] Current technology specifies relay handover scenarios within the same base station. When a remote terminal performs a direct handover to a non-direct path, the remote terminal needs to provide the base station with at least one of the following information: the identifier of the backup relay user equipment (UE); the serving cell of the backup relay UE; and the secondary link measurement quality information of the backup relay UE. For this handover, since the same base station is always involved, the base station can determine the connection status of the backup relay UE and thus decide which relay UE to select for the handover path.

[0003] However, in relay communication, due to the mobility of remote UEs, path handover scenarios may occur. These include situations where a remote UE switches from a direct path to a non-direct path, and the direct and non-direct paths are from different base stations (cross-base station path handover). In cross-base station path handover scenarios, the source base station and the target base station are not the same. Without interaction between the two, it is impossible to determine the connection status of the alternative relay UE. Therefore, there is a lack of basis for determining the target path / target relay, resulting in increased handover latency and a degraded service experience. Summary of the Invention

[0004] This application provides a relay handover method, apparatus, remote terminal, relay terminal, and network-side equipment, which can solve the problems of large latency and poor service experience in cross-base station path handover in relay communication.

[0005] Firstly, a relay handover processing method is provided, including:

[0006] The remote terminal acquires first information from the relay terminal, the first information being used to indicate the connection status of the relay terminal; the relay terminal includes one or more.

[0007] The remote terminal performs a first operation based on the first information; the first operation includes at least one of the following:

[0008] Determine the connection status of the relay terminal;

[0009] Select a backup relay terminal and send second information to the network-side device, the second information including the identifier of the first backup relay terminal selected by the remote terminal;

[0010] Send a third message to the network-side device, the third message including the identifier of a second alternative relay terminal; the second alternative relay terminal includes some or all of the relay terminals that sent the first message.

[0011] Secondly, a relay handover processing method is provided, including:

[0012] The network-side device receives second and / or third information sent by the remote terminal; the second information includes the identifier of the first alternative relay terminal selected by the remote terminal; the third information includes the identifier of the second alternative relay terminal.

[0013] The network-side device selects a target path for relay switching based on the second information and / or the third information. The target path includes a target relay terminal and / or a target network-side device.

[0014] Thirdly, a relay handover processing method is provided, including:

[0015] The relay terminal sends first information about the relay terminal to the remote terminal, the first information including information indicating the connection status of the relay terminal.

[0016] Fourthly, a relay switching processing device is provided, comprising:

[0017] A first acquisition module is used to acquire first information of a relay terminal, the first information being used to indicate the connection status of the relay terminal; the relay terminal includes one or more.

[0018] A first execution module is configured to perform a first operation based on the first information; the first operation includes at least one of the following:

[0019] Determine the connection status of the relay terminal;

[0020] Select a backup relay terminal and send second information to the network-side device, the second information including the identifier of the first backup relay terminal selected by the remote terminal;

[0021] Send a third message to the network-side device, the third message including the identifier of a second alternative relay terminal; the second alternative relay terminal includes some or all of the relay terminals that sent the first message.

[0022] Fifthly, a relay switching processing device is provided, comprising:

[0023] A first receiving module is configured to receive second information and / or third information sent by a remote terminal; the second information includes the identifier of a first alternative relay terminal selected by the remote terminal; the third information includes the identifier of a second alternative relay terminal.

[0024] The selection module is used to select the target path for relay switching based on the second information and / or the third information, wherein the target path includes the target relay terminal and / or the target network-side device.

[0025] Sixthly, a relay switching processing device is provided, comprising:

[0026] The second sending module is used to send first information of the relay terminal to the remote terminal, the first information including information indicating the connection status of the relay terminal.

[0027] In a seventh aspect, a remote terminal is provided, the remote terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0028] Eighthly, a remote terminal is provided, including a processor and a communication interface, wherein the communication interface is used to acquire first information of a relay terminal, the first information indicating the connection status of the relay terminal; the processor is used to execute a first operation based on the first information; the first operation includes at least one of the following:

[0029] Determine the connection status of the relay terminal;

[0030] Select a backup relay terminal and send second information to the network-side device, the second information including the identifier of the first backup relay terminal selected by the remote terminal;

[0031] Send a third message to the network-side device, the third message including the identifier of a second alternative relay terminal; the second alternative relay terminal includes some or all of the relay terminals that sent the first message.

[0032] In a ninth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0033] In a tenth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to receive second information and / or third information sent by a remote terminal; the second information includes an identifier of a first alternative relay terminal selected by the remote terminal; the third information includes an identifier of a second alternative relay terminal; the processor is used to select a target path for relay switching based on the second information and / or the third information, the target path including a target relay terminal and / or a target network-side device.

[0034] Eleventhly, a relay terminal is provided, the relay terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the third aspect.

[0035] In a twelfth aspect, a relay terminal is provided, including a processor and a communication interface, wherein the communication interface is used to send first information of the relay terminal to a remote terminal, the first information including an indication of the connection status of the relay terminal.

[0036] In a thirteenth aspect, a communication system is provided, comprising: a remote terminal, a relay terminal, and a network-side device, wherein the remote terminal is configured to perform the steps of the relay handover processing method as described in the first aspect, the network-side device is configured to perform the steps of the relay handover processing method as described in the second aspect, and the relay terminal is configured to perform the steps of the relay handover processing method as described in the third aspect.

[0037] In a fourteenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0038] In a fifteenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the method as described in the first aspect, or the method as described in the second aspect, or the method as described in the third aspect.

[0039] In a sixteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect.

[0040] In this embodiment, before relay handover, the remote terminal obtains the connection status of the relay terminal and notifies the network-side device, which then performs relay handover based on the connection status of the relay terminal; or the remote terminal obtains the connection status of the relay terminal and selects a backup relay terminal based on the connection status, and reports it to the network-side device; thereby effectively improving handover efficiency and user experience during the process of performing direct path handover to indirect path handover across base stations on the remote path. Attached Figure Description

[0041] Figure 1This is a block diagram of a wireless communication system applicable to embodiments of this application;

[0042] Figure 2 This is one of the flowcharts of the relay handover processing method provided in the embodiments of this application;

[0043] Figure 3 This is the second step of the relay handover processing method provided in the embodiments of this application;

[0044] Figure 4 This is the third step in the flowchart of the relay handover processing method provided in the embodiments of this application;

[0045] Figure 5 This is an interactive schematic diagram of Example 1 provided in the embodiments of this application;

[0046] Figure 6 This is an interactive schematic diagram of Example 2 provided in the embodiments of this application;

[0047] Figure 7 This is one of the structural schematic diagrams of the relay switching processing device provided in the embodiments of this application;

[0048] Figure 8 This is a second schematic diagram of the relay switching processing device provided in the embodiments of this application;

[0049] Figure 9 This is the third schematic diagram of the relay switching processing device provided in the embodiments of this application;

[0050] Figure 10 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application;

[0051] Figure 11 This is a schematic diagram of the terminal structure provided in the embodiments of this application;

[0052] Figure 12 This is a schematic diagram of the network-side device provided in the embodiments of this application. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0054] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0055] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0056] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a remote terminal 11, a relay terminal 12, and a network-side device 13. Among them, the remote terminal 11 and the relay terminal 12 can be mobile phones, tablet computers, laptop computers or notebook computers, personal digital assistants (PDAs), handheld computers, netbooks, ultra-mobile personal computers (UMPCs), mobile internet devices (MIDs), augmented reality (AR) / virtual reality (VR) devices, robots, wearable devices, vehicle-mounted devices (VUEs), pedestrian terminals (PUEs), smart home devices (home devices with wireless communication functions, such as refrigerators, televisions, washing machines or furniture), game consoles, personal computers (PCs), ATMs or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific types of remote terminal 11 and relay terminal 12 are not limited in this application embodiment. Network-side device 13 may include access network device or core network device, wherein access network device 13 may also be referred to as radio access network device, radio access network (RAN), radio access network function or radio access network unit. Access network device 13 may include base station, WLAN access point or WiFi node, etc. Base station may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), home B node, home evolved B node, transmitting and receiving point (TRP) or any other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that this application embodiment only uses the base station in the NR system as an example for introduction, and does not limit the specific type of base station.

[0057] The relay handover processing method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0058] like Figure 2 As shown in the figure, this application provides a relay handover processing method, including:

[0059] Step 201: The remote terminal obtains first information of the relay terminal, the first information being used to indicate the connection status of the relay terminal, the relay terminal including one or more, and the obtaining includes receiving.

[0060] Step 202: The remote terminal performs a first operation based on the first information; the first operation includes at least one of the following:

[0061] Determine the connection status of the relay terminal;

[0062] Select a backup relay terminal and send second information to the network-side device, the second information including the identifier of the first backup relay terminal selected by the remote terminal;

[0063] Send a third message to the network-side device, the third message including the identifier of a second alternative relay terminal; the second alternative relay terminal includes some or all of the relay terminals that sent the first message.

[0064] Optionally, in this embodiment, the first information can indicate the connection status of the relay terminal either explicitly or implicitly. Specifically, the first information includes at least one of the following: the Cell Radio Network Temporary Identifier (C-RNTI) of the relay terminal, the Inactive Radio Network Temporary Identifier (I-RNTI) of the relay terminal, the 5G Temporary Mobile Subscription Identifier (5G-STMSI) of the relay terminal, and the connection status information of the relay terminal. The connection status information of the relay terminal is used to explicitly indicate the connection status of the relay terminal, while the C-RNTI, I-RNTI, and 5G-STMSI of the relay terminal are used to implicitly indicate (or indirectly indicate) the connection status of the relay terminal.

[0065] As an optional embodiment, the connection status of the relay terminal includes one of the following:

[0066] Connection states, such as Connection Management (CM) connection state and Radio Resource Control (RRC) connection state;

[0067] Inactive state, such as CM-Connected with RRC inactive (CM is connected and RRC is inactive);

[0068] Idle state.

[0069] As an optional embodiment, the identifier of the first alternative relay terminal and / or the identifier of the second alternative relay terminal includes at least one of the following:

[0070] The globally unique temporary identifier for 5G is 5G-GUTI.

[0071] 5G Temporary Mobile Subscription Identifier (5G-STMSI);

[0072] Temporary Identifier for Cellular Wireless Network (C-RNTI)

[0073] Inactive wireless network temporary identifier I-RNTI;

[0074] Layer 2 ID.

[0075] It should be noted that, in the embodiments of this application, the identifier of the first alternative relay terminal can indirectly or implicitly indicate the connection status of the first alternative relay terminal; the identifier of the second alternative relay terminal can indirectly or implicitly indicate the identifier of the second alternative relay terminal.

[0076] In at least one embodiment of this application, the third information further includes:

[0077] The connection status information of the second alternative relay terminal. This connection status information is used to explicitly indicate the connection status of the second alternative relay terminal.

[0078] In at least one embodiment of this application, the first information further includes: information on the relay terminal's willingness to enter the connected state. For example, a specific bit in the first information indicates whether the relay terminal is willing to enter the connected state; if the relay terminal is currently in an idle or inactive state but is willing to prepare to enter the connected state, the corresponding bit in the first information is 1; or if the relay terminal is currently in an idle or inactive state but has no willingness to enter the connected state, the corresponding bit in the first information is 0.

[0079] As an optional embodiment, the second information further includes: the identification information of the serving cell of the first candidate relay terminal; such as the identification information of the serving cell being the NR Cell Global Identifier (NCGI);

[0080] And / or, the third information further includes: the identification information of the serving cell of the second alternative relay terminal, such as the identification information of the serving cell being the NR Cell Global Identifier (NCGI).

[0081] In at least one embodiment of this application, step 202, in which the remote terminal selects a candidate relay terminal based on the first information, includes:

[0082] The remote terminal selects a candidate relay terminal based on the first information and the first principle; wherein, the first principle includes:

[0083] Relay terminals in the connected state are selected as the first backup relay terminals with the highest priority.

[0084] The inactive relay terminal is selected as the first alternative relay terminal with the second priority.

[0085] The relay terminal corresponding to the first piece of information, which includes the intention information, is selected as the first alternative relay terminal with the third priority.

[0086] The idle relay terminal is selected as the first backup relay terminal with the fourth priority.

[0087] Optionally, the first priority is higher than the second priority, the second priority is higher than the third priority, and the third priority is higher than the fourth priority; the corresponding first principle can also be understood as:

[0088] Relay terminals that are in a connected state are given priority as the first alternative relay terminals;

[0089] The second best option is to use a relay terminal that is inactive as the first alternative relay terminal.

[0090] Again, the relay terminal corresponding to the first information, which includes the intention information, is selected as the first alternative relay terminal;

[0091] Finally, the relay terminal in the idle state is selected as the first backup relay terminal.

[0092] In at least one embodiment of this application, prior to step 201, the method further includes:

[0093] The remote terminal sends fourth information to the relay terminal, the fourth information including at least one of the following:

[0094] The first request message requests the relay terminal to send connection status information;

[0095] A second request message is sent requesting the relay terminal to send information indicating its willingness to enter the connected state;

[0096] The third request message requests the relay terminal to enter the connected state;

[0097] Accordingly, step 201 includes:

[0098] The remote terminal obtains the first information sent by the relay terminal based on the fourth information.

[0099] In other words, the method by which the remote terminal obtains the first information in this embodiment of the application includes:

[0100] The relay terminal directly sends the first information to the remote terminal;

[0101] or,

[0102] The relay terminal then sends the first information to the remote terminal based on the request from the remote terminal.

[0103] In summary, in the embodiments of this application, before relay handover, the remote terminal obtains the connection status of the relay terminal and notifies the network-side device, which then performs relay handover based on the connection status of the relay terminal; or the remote terminal obtains the connection status of the relay terminal and selects a backup relay terminal based on the connection status, and reports it to the network-side device; thereby effectively improving handover efficiency and user experience during the process of performing direct path handover to indirect path handover across base stations on the remote path.

[0104] like Figure 3 As shown in the figure, this application provides a relay handover processing method, including:

[0105] Step 301: The network-side device receives second information and / or third information sent by the remote terminal; the second information includes the identifier of the first alternative relay terminal selected by the remote terminal; the third information includes the identifier of the second alternative relay terminal.

[0106] Step 302: The network-side device selects a target path for relay handover based on the second information and / or the third information. The target path includes a target relay terminal and / or a target network-side device.

[0107] As an optional embodiment, the identifier of the first alternative relay terminal and / or the identifier of the second alternative relay terminal includes at least one of the following:

[0108] The globally unique temporary identifier for 5G is 5G-GUTI.

[0109] 5G Temporary Mobile Subscription Identifier (5G-STMSI);

[0110] Temporary Identifier for Cellular Wireless Network (C-RNTI)

[0111] Inactive wireless network temporary identifier I-RNTI;

[0112] Layer 2 ID.

[0113] It should be noted that, in the embodiments of this application, the identifier of the first alternative relay terminal can indirectly or implicitly indicate the connection status of the first alternative relay terminal; the identifier of the second alternative relay terminal can indirectly or implicitly indicate the identifier of the second alternative relay terminal.

[0114] In at least one embodiment of this application, the third information further includes:

[0115] The connection status information of the second alternative relay terminal. This connection status information is used to explicitly indicate the connection status of the second alternative relay terminal.

[0116] In at least one embodiment of this application, the second information further includes: the identification information of the serving cell of the first candidate relay terminal; such as the identification information of the serving cell being an NR cell global identifier (NCGI);

[0117] And / or, the third information further includes: the identification information of the serving cell of the second alternative relay terminal, such as the identification information of the serving cell being the NR Cell Global Identifier (NCGI).

[0118] It should be noted that the network-side device mentioned in the embodiments of this application refers to the network-side device that the remote terminal is currently connected to (including direct connection or connection through a relay terminal).

[0119] As an optional embodiment, in step 302, the network-side device selects the target path for relay handover based on the second information, including:

[0120] The network-side device selects a target relay terminal and / or a target network-side device for the remote terminal from the first candidate relay terminals based on the identifier of the first candidate relay terminal selected by the remote terminal.

[0121] As another optional embodiment, the network-side device in step 302 selects the target path for relay handover based on the third information, including:

[0122] The network-side device determines the connection status of the second alternative relay terminal based on the third information;

[0123] The network-side device selects a target relay terminal and / or a target network-side device for the remote terminal based on the connection status of the second candidate relay terminal and a second principle; wherein, the second principle includes:

[0124] The second relay terminal in the connected state is selected as the target relay terminal and / or target network-side device with the fifth priority.

[0125] The second relay terminal, which is inactive, is selected as the target relay terminal and / or target network-side device with the sixth priority.

[0126] The second relay terminal in an idle state is selected as the target relay terminal and / or target network-side device with the seventh priority.

[0127] It should be noted that the fifth priority is higher than the sixth priority, and the sixth priority is higher than the seventh priority. Correspondingly, the second principle can also be understood as:

[0128] The second relay terminal in a connected state is preferentially selected as the target relay terminal and / or target network-side device;

[0129] The second-best choice is to select the second relay terminal, which is inactive, as the target relay terminal and / or target network-side device;

[0130] Finally, the second relay terminal in an idle state is selected as the target relay terminal and / or target network-side device.

[0131] As another optional embodiment, the network-side device in step 302 selects the target path for relay handover based on the second and third information, including:

[0132] The network-side device determines the connection status of the second alternative relay terminal based on the third information;

[0133] The network-side device selects a target relay terminal and / or a target network-side device for the remote terminal based on the identifier of the first candidate relay terminal selected by the remote terminal, the identifier of the second candidate relay terminal, the connection status of the second candidate relay terminal, and a third principle; wherein the third principle includes:

[0134] The first alternative relay terminal is selected as the target relay terminal and / or target network-side device with the eighth priority.

[0135] The second relay terminal in the connected state is selected as the target relay terminal and / or target network-side device with the ninth priority.

[0136] The second relay terminal, which is inactive, is selected as the target relay terminal and / or target network-side device with the tenth priority.

[0137] The second relay terminal, which is in an idle state, is selected as the target relay terminal and / or target network-side device with the eleventh priority.

[0138] It should be noted that the eighth priority is higher than the ninth priority, the ninth priority is higher than the tenth priority, and the tenth priority is higher than the eleventh priority. Correspondingly, the third principle can also be understood as:

[0139] The first alternative relay terminal is selected as the target relay terminal and / or target network-side device.

[0140] The second relay terminal in a connected state is selected as the target relay terminal and / or target network-side device.

[0141] Again, the second relay terminal, which is inactive, is selected as the target relay terminal and / or target network-side device.

[0142] Finally, the second relay terminal in an idle state is selected as the target relay terminal and / or target network-side device.

[0143] In summary, in the embodiments of this application, before relay handover, the remote terminal obtains the connection status of the relay terminal and notifies the network-side device, which then performs relay handover based on the connection status of the relay terminal; or the remote terminal obtains the connection status of the relay terminal and selects a backup relay terminal based on the connection status, and reports it to the network-side device; thereby effectively improving handover efficiency and user experience during the process of performing direct path handover to indirect path handover across base stations on the remote path.

[0144] like Figure 4 As shown in the embodiments of this application, a relay handover processing method is also provided, including:

[0145] Step 401: The relay terminal sends the first information of the relay terminal to the remote terminal, the first information including information indicating the connection status of the relay terminal.

[0146] Optionally, in this embodiment, the first information can indicate the connection status of the relay terminal either explicitly or implicitly. Specifically, the first information includes at least one of the following: the Cell Radio Network Temporary Identifier (C-RNTI) of the relay terminal, the Inactive Radio Network Temporary Identifier (I-RNTI) of the relay terminal, the 5G Temporary Mobile Subscription Identifier (5G-STMSI) of the relay terminal, and the connection status information of the relay terminal. The connection status information of the relay terminal is used to explicitly indicate the connection status of the relay terminal, while the C-RNTI, I-RNTI, and 5G-STMSI of the relay terminal are used to implicitly indicate (or indirectly indicate) the connection status of the relay terminal.

[0147] As an optional embodiment, the connection status of the relay terminal includes one of the following:

[0148] Connection states, such as Connection Management (CM) connection state and Radio Resource Control (RRC) connection state;

[0149] Inactive state, such as CM-Connected with RRC inactive (CM is connected and RRC is inactive);

[0150] Idle state.

[0151] In at least one embodiment of this application, the first information further includes: information on the relay terminal's willingness to enter the connected state. For example, a specific bit in the first information indicates whether the relay terminal is willing to enter the connected state; if the relay terminal is currently in an idle or inactive state but is willing to prepare to enter the connected state, the corresponding bit in the first information is 1; or if the relay terminal is currently in an idle or inactive state but has no willingness to enter the connected state, the corresponding bit in the first information is 0.

[0152] In at least one embodiment of this application, prior to step 401, the method further includes:

[0153] The relay terminal receives fourth information sent by the remote terminal, the fourth information including at least one of the following:

[0154] The first request message requests the relay terminal to send connection status information;

[0155] A second request message is sent requesting the relay terminal to send information indicating its willingness to enter the connected state;

[0156] The third request message requests the relay terminal to enter the connected state;

[0157] Accordingly, step 401 includes:

[0158] The relay terminal sends the first information to the remote terminal based on the fourth information.

[0159] In other words, the method by which the remote terminal obtains the first information in this embodiment of the application includes:

[0160] The relay terminal directly sends the first information to the remote terminal;

[0161] or,

[0162] The relay terminal then sends the first information to the remote terminal based on the request from the remote terminal.

[0163] For example, if the fourth information includes the first request information and / or the second request information, the first information carries the connection status information of the relay terminal and / or the relay terminal's intention to enter the connected state.

[0164] As an optional embodiment, if the fourth information includes the third request information, the method further includes:

[0165] When the relay terminal is in an idle or inactive state, the relay terminal executes the process of entering the connection state (including the service request process) according to the third request information;

[0166] The relay terminal sends the first information to the remote terminal according to the fourth information, including:

[0167] After the relay terminal enters the connected state, it sends the first information to the remote terminal; the first information carries the connection status information of the relay terminal and / or the relay terminal's intention to enter the connected state.

[0168] In summary, in the embodiments of this application, before relay handover, the remote terminal obtains the connection status of the relay terminal and notifies the network-side device, which then performs relay handover based on the connection status of the relay terminal; or the remote terminal obtains the connection status of the relay terminal and selects a backup relay terminal based on the connection status, and reports it to the network-side device; thereby effectively improving handover efficiency and user experience during the process of performing direct path handover to indirect path handover across base stations on the remote path.

[0169] To more clearly describe the relay handover processing method provided in the embodiments of this application, two examples are given below.

[0170] Example 1: The remote terminal obtains the first information of the relay terminal. Based on the first information, the remote terminal or the source base station selects a candidate relay terminal, such as... Figure 5 As shown:

[0171] Step 51: The remote terminal receives a relay discovery message or a relay discovery additional message from the relay terminal. The relay discovery message carries first information, which includes at least one of the following: the cell radio network temporary identifier (C-RNTI) of the relay terminal, the inactive state radio network temporary identifier (I-RNTI) of the relay terminal, the 5G temporary mobile subscription identifier (5G-STMSI) of the relay terminal, and the connection status information of the relay terminal. The relay discovery additional message includes information on the relay terminal's willingness to enter the connected state, i.e., the relay terminal is currently in an idle state but is willing to prepare to enter the connected state.

[0172] Step 52, the remote terminal sends second information and / or third information to the source base station, the second information including: the identifier of the first alternative relay terminal, the first alternative relay terminal being selected by the remote terminal based on the first information.

[0173] The third information includes: the identifier of the second candidate relay terminal. Optional third information may also include: the connection status information of the corresponding relay terminal. The second candidate relay terminal includes the relay terminal corresponding to the one that sent the first information.

[0174] Step 53: The source base station receives the second information and / or the third information, and selects a target handover path based on the second information and / or the third information, including the target relay terminal and / or the target base station.

[0175] When the third information includes the identifier of the second alternative relay terminal and the connection status information of the corresponding relay UE:

[0176] Prioritize relay terminals that are in a connected state;

[0177] The second-best choice is a relay terminal that is inactive;

[0178] Finally, select the idle relay terminal.

[0179] Example 2: The remote terminal obtains the first information of the relay terminal, and the remote terminal or the source base station selects a backup relay terminal based on the first information, such as... Figure 6 As shown:

[0180] Step 61: The remote terminal sends a relay discovery message or a relay additional information acquisition message, wherein the message optionally carries fourth information, and the fourth information optionally includes at least one of the following:

[0181] The first request message requests the relay terminal to send connection status information;

[0182] A second request message is sent requesting the relay terminal to send information indicating its willingness to enter the connected state;

[0183] The third request message requests the relay terminal to enter the connected state.

[0184] Step 62: The relay terminal receives a relay discovery message from the remote terminal and sends first information, which includes at least one of the following: the cell radio network temporary identifier (C-RNTI) of the relay terminal, the inactive state radio network temporary identifier (I-RNTI) of the relay terminal, the 5G temporary mobile subscription identifier (5G-STMSI) of the relay terminal, and the connection status information of the relay terminal; the additional relay discovery message includes information on the relay terminal's willingness to enter the connected state, i.e., the relay terminal is currently in an idle state but is willing to prepare to enter the connected state.

[0185] In one implementation, the fourth information carries the first request information and / or the second request information, and the relay terminal directly sends the first information;

[0186] In another implementation, the fourth information also carries third request information. The relay terminal performs the process of entering the connection state, including a service request process, and sends the first information after entering the connection state.

[0187] Step 63: The remote terminal sends second information and / or third information to the source base station. The second information includes: the identifier of the first alternative relay terminal, which is selected by the remote terminal based on the first information.

[0188] The third information includes: the identifier of the second candidate relay terminal. Optional third information may also include: the connection status information of the corresponding relay terminal. The second candidate relay terminal includes the relay terminal corresponding to the one that sent the first information.

[0189] Step 64: The source base station receives the second information and / or the third information, and selects a target handover path based on the second information and / or the third information, including the target relay terminal and / or the target base station.

[0190] When the third information includes the identifier of the second alternative relay terminal and the connection status information of the corresponding relay UE:

[0191] Prioritize relay terminals that are in a connected state;

[0192] The second-best choice is a relay terminal that is inactive;

[0193] Finally, select the idle relay terminal.

[0194] In this embodiment, the relay terminal sends its connection status information (discovery phase) to the remote terminal. Based on the connection status of the relay terminal, the remote terminal determines the alternative relay information to be sent to the network-side device (source base station) (e.g., only providing the identifier of the first alternative relay terminal in the connected state, or the identifier of the second alternative relay terminal + connection status information). Based on the alternative relay terminal information provided by the remote terminal, the network-side device performs the selection of the target handover path, including the selection of the target relay terminal and the selection of the target network-side device (prioritizing the target path corresponding to the relay terminal in the connected state); this can effectively improve handover efficiency and user experience.

[0195] The relay handover processing method provided in this application can be executed by a relay handover processing device. This application uses the example of a relay handover processing device executing the relay handover processing method to illustrate the relay handover processing device provided in this application.

[0196] like Figure 7 As shown in the figure, this application embodiment also provides a relay switching processing device 700, including:

[0197] The first acquisition module 701 is used to acquire first information of the relay terminal, the first information being used to indicate the connection status of the relay terminal; the relay terminal includes one or more.

[0198] The first execution module 702 is configured to perform a first operation based on the first information; the first operation includes at least one of the following:

[0199] Determine the connection status of the relay terminal;

[0200] Select a backup relay terminal and send second information to the network-side device, the second information including the identifier of the first backup relay terminal selected by the remote terminal;

[0201] Send a third message to the network-side device, the third message including the identifier of a second alternative relay terminal; the second alternative relay terminal includes some or all of the relay terminals that sent the first message.

[0202] As an optional embodiment, the third information further includes:

[0203] The connection status information of the second alternative relay terminal.

[0204] As an optional embodiment, the identifier of the first alternative relay terminal and / or the identifier of the second alternative relay terminal includes at least one of the following:

[0205] 5G Global Unique Temporary Identifier (GUTI)

[0206] 5G Temporary Mobile Subscription Identifier (5G-STMSI);

[0207] Temporary Identifier for Cellular Wireless Network (C-RNTI)

[0208] Inactive wireless network temporary identifier I-RNTI;

[0209] Layer 2 ID.

[0210] As an optional embodiment, the first information includes at least one of the following: the cell radio network temporary identifier (C-RNTI) of the relay terminal, the inactive radio network temporary identifier (I-RNTI) of the relay terminal, the 5G temporary mobile subscription identifier (5G-STMSI) of the relay terminal, and the connection status information of the relay terminal.

[0211] As an optional embodiment, the first information may further include: the relay terminal's willingness to enter the connected state.

[0212] As an optional embodiment, the second information further includes: the identification information of the serving cell of the first candidate relay terminal;

[0213] And / or,

[0214] The third information also includes: the identification information of the serving cell of the second alternative relay terminal.

[0215] As an optional embodiment, the first execution module includes:

[0216] The first selection submodule is used to select candidate relay terminals based on the first information and the first principle; wherein the first principle includes:

[0217] Relay terminals in the connected state are selected as the first backup relay terminals with the highest priority.

[0218] The inactive relay terminal is selected as the first alternative relay terminal with the second priority.

[0219] The relay terminal corresponding to the first piece of information, which includes the intention information, is selected as the first alternative relay terminal with the third priority.

[0220] The idle relay terminal is selected as the first backup relay terminal with the fourth priority.

[0221] As an optional embodiment, the apparatus further includes:

[0222] A first transmitting module is configured to transmit fourth information to a relay terminal, the fourth information including at least one of the following:

[0223] The first request message requests the relay terminal to send connection status information;

[0224] A second request message is sent requesting the relay terminal to send information indicating its willingness to enter the connected state;

[0225] The third request message requests the relay terminal to enter the connected state;

[0226] The first acquisition module includes:

[0227] The first acquisition submodule is used to acquire the first information sent by the relay terminal based on the fourth information.

[0228] In this embodiment, before relay handover, the remote terminal obtains the connection status of the relay terminal and notifies the network-side device, which then performs relay handover based on the connection status of the relay terminal; or the remote terminal obtains the connection status of the relay terminal and selects a backup relay terminal based on the connection status, and reports it to the network-side device; thereby effectively improving handover efficiency and user experience during the process of performing direct path handover to indirect path handover across base stations on the remote path.

[0229] It should be noted that the relay handover processing device provided in this application embodiment is a device capable of executing the above-described relay handover processing method. Therefore, all embodiments of the above-described relay handover processing method are applicable to this device and can achieve the same or similar beneficial effects.

[0230] like Figure 8 As shown in the figure, this application embodiment also provides a relay switching processing device 800, including:

[0231] The first receiving module 801 is used to receive second information and / or third information sent by the remote terminal; the second information includes the identifier of the first alternative relay terminal selected by the remote terminal; the third information includes the identifier of the second alternative relay terminal.

[0232] Selection module 802 is used to select a target path for relay switching based on the second information and / or the third information, wherein the target path includes a target relay terminal and / or a target network-side device.

[0233] As an optional embodiment, the third information further includes:

[0234] The connection status information of the second alternative relay terminal.

[0235] As an optional embodiment, the identifier of the first alternative relay terminal and / or the identifier of the second alternative relay terminal includes at least one of the following:

[0236] The globally unique temporary identifier for 5G is 5G-GUTI.

[0237] 5G Temporary Mobile Subscription Identifier (5G-STMSI);

[0238] Temporary Identifier for Cellular Wireless Network (C-RNTI)

[0239] Inactive wireless network temporary identifier I-RNTI;

[0240] Layer 2 ID.

[0241] As an optional embodiment, the second information further includes: the identification information of the serving cell of the first candidate relay terminal;

[0242] And / or,

[0243] The third information also includes: the identification information of the serving cell of the second alternative relay terminal.

[0244] As an optional embodiment, the selection module includes:

[0245] The first selection submodule is used to select a target relay terminal and / or a target network-side device for the remote terminal from the first candidate relay terminals according to the identifier of the first candidate relay terminal selected by the remote terminal.

[0246] As an optional embodiment, the selection module includes:

[0247] The first determining submodule is used to determine the connection status of the second candidate relay terminal based on the third information.

[0248] The second selection submodule is used to select a target relay terminal and / or a target network-side device for the remote terminal based on the connection status of the second candidate relay terminals and a second principle; wherein the second principle includes:

[0249] The second relay terminal in the connected state is selected as the target relay terminal and / or target network-side device with the fifth priority.

[0250] The second relay terminal, which is inactive, is selected as the target relay terminal and / or target network-side device with the sixth priority.

[0251] The second relay terminal in an idle state is selected as the target relay terminal and / or target network-side device with the seventh priority.

[0252] As an optional embodiment, the selection module includes:

[0253] The second determining submodule is used to determine the connection status of the second candidate relay terminal based on the third information.

[0254] The third selection submodule is used to select a target relay terminal and / or a target network-side device for the remote terminal based on the identifier of the first candidate relay terminal selected by the remote terminal, the identifier of the second candidate relay terminal, the connection status of the second candidate relay terminal, and a third principle; wherein, the third principle includes:

[0255] The first alternative relay terminal is selected as the target relay terminal and / or target network-side device with the eighth priority.

[0256] The second relay terminal in the connected state is selected as the target relay terminal and / or target network-side device with the ninth priority.

[0257] The second relay terminal, which is inactive, is selected as the target relay terminal and / or target network-side device with the tenth priority.

[0258] The second relay terminal, which is in an idle state, is selected as the target relay terminal and / or target network-side device with the eleventh priority.

[0259] In this embodiment, before relay handover, the remote terminal obtains the connection status of the relay terminal and notifies the network-side device, which then performs relay handover based on the connection status of the relay terminal; or the remote terminal obtains the connection status of the relay terminal and selects a backup relay terminal based on the connection status, and reports it to the network-side device; thereby effectively improving handover efficiency and user experience during the process of performing direct path handover to indirect path handover across base stations on the remote path.

[0260] It should be noted that the relay handover processing device provided in this application embodiment is a device capable of executing the above-described relay handover processing method. Therefore, all embodiments of the above-described relay handover processing method are applicable to this device and can achieve the same or similar beneficial effects.

[0261] like Figure 9 As shown in the figure, this application embodiment also provides a relay switching processing device 900, including:

[0262] The second sending module 901 is used to send the first information of the relay terminal to the remote terminal, the first information including an indication of the connection status of the relay terminal.

[0263] As an optional embodiment, the first information includes at least one of the following: the cell radio network temporary identifier (C-RNTI) of the relay terminal, the inactive radio network temporary identifier (I-RNTI) of the relay terminal, the 5G temporary mobile subscription identifier (5G-STMSI) of the relay terminal, and the connection status information of the relay terminal.

[0264] As an optional embodiment, the first information may further include: the relay terminal's willingness to enter the connected state.

[0265] As an optional embodiment, the apparatus further includes:

[0266] The second receiving module is configured to receive fourth information sent by the remote terminal, the fourth information including at least one of the following:

[0267] The first request message requests the relay terminal to send connection status information;

[0268] A second request message is sent requesting the relay terminal to send information indicating its willingness to enter the connected state;

[0269] The third request message requests the relay terminal to enter the connected state;

[0270] The second sending module includes:

[0271] The second sending submodule is used to send the first information to the remote terminal according to the fourth information.

[0272] As an optional embodiment, if the fourth information includes the third request information, the apparatus further includes:

[0273] The second execution module is used to execute the process of entering the connection state according to the third request information when the relay terminal is in an idle state or an inactive state.

[0274] The second sending module includes:

[0275] The third sending submodule is used to send the first information to the remote terminal after entering the connection state.

[0276] In this embodiment, before relay handover, the remote terminal obtains the connection status of the relay terminal and notifies the network-side device, which then performs relay handover based on the connection status of the relay terminal; or the remote terminal obtains the connection status of the relay terminal and selects a backup relay terminal based on the connection status, and reports it to the network-side device; thereby effectively improving handover efficiency and user experience during the process of performing direct path handover to indirect path handover across base stations on the remote path.

[0277] It should be noted that the relay handover processing device provided in this application embodiment is a device capable of executing the above-described relay handover processing method. Therefore, all embodiments of the above-described relay handover processing method are applicable to this device and can achieve the same or similar beneficial effects.

[0278] The relay switching processing device in this application embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the type.

[0279] The relay switching processing device provided in this application embodiment can achieve... Figures 1 to 6 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0280] Optional, such as Figure 10 As shown, this application embodiment also provides a communication device 1000, including a processor 1001 and a memory 1002. The memory 1002 stores programs or instructions that can run on the processor 1001. For example, when the communication device 1000 is a remote terminal, the program or instructions executed by the processor 1001 implement the various steps of the above-described relay handover processing method embodiment and achieve the same technical effect. When the communication device 1000 is a relay terminal, the program or instructions executed by the processor 1001 implement the various steps of the above-described relay handover processing method embodiment and achieve the same technical effect; when the communication device 1000 is a network-side device, the program or instructions executed by the processor 1001 implement the various steps of the above-described relay handover processing method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0281] This application embodiment also provides a terminal (the terminal is a relay terminal or a remote terminal), including a processor and a communication interface. The communication interface is used to acquire first information of the relay terminal, the first information being used to indicate the connection status of the relay terminal. The relay terminal includes one or more. The processor is used to execute a first operation based on the first information. The first operation includes at least one of the following:

[0282] Determine the connection status of the relay terminal;

[0283] Select a backup relay terminal and send second information to the network-side device, the second information including the identifier of the first backup relay terminal selected by the remote terminal;

[0284] A third piece of information is sent to the network-side device, the third piece of information including the identifier of a second candidate relay terminal; the second candidate relay terminal includes some or all of the relay terminals that sent the first information; or, the communication interface is used to send the first information of the relay terminal to the remote terminal, the first information including an indication of the connection status of the relay terminal. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and all implementation processes and methods of the above-described method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 11 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0285] The terminal 1100 includes, but is not limited to, at least some of the following components: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, and processor 1110.

[0286] Those skilled in the art will understand that the terminal 1100 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 1110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. 11 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0287] It should be understood that, in this embodiment, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042. The GPU 11041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1106 may include a display panel 11061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, joysticks, etc., which will not be described in detail here.

[0288] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1101 can transmit it to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network-side device. Typically, the radio frequency unit 1101 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0289] The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback function, image playback function, etc.). Furthermore, the memory 1109 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1109 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0290] Processor 1110 may include one or more processing units; optionally, processor 1110 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1110.

[0291] The radio frequency unit 1101 is used to acquire first information of the relay terminal, the first information being used to indicate the connection status of the relay terminal; the relay terminal includes one or more.

[0292] Processor 1110 is configured to perform a first operation based on the first information; the first operation includes at least one of the following:

[0293] Determine the connection status of the relay terminal;

[0294] Select a backup relay terminal and send second information to the network-side device, the second information including the identifier of the first backup relay terminal selected by the remote terminal;

[0295] The system sends a third message to the network-side device, the third message including the identifier of a second alternative relay terminal; the second alternative relay terminal includes some or all of the relay terminals that sent the first message.

[0296] Alternatively, the radio frequency unit 1101 is used to send first information of the relay terminal to a remote terminal, the first information including an indication of the connection status of the relay terminal.

[0297] In this embodiment, before relay handover, the remote terminal obtains the connection status of the relay terminal and notifies the network-side device, which then performs relay handover based on the connection status of the relay terminal; or the remote terminal obtains the connection status of the relay terminal and selects a backup relay terminal based on the connection status, and reports it to the network-side device; thereby effectively improving handover efficiency and user experience during the process of performing direct path handover to indirect path handover across base stations on the remote path.

[0298] It should be noted that the relay handover processing device provided in this application embodiment is a device capable of executing the above-described relay handover processing method. Therefore, all embodiments of the above-described relay handover processing method are applicable to this device and can achieve the same or similar beneficial effects.

[0299] This application also provides a network-side device, including a processor and a communication interface. The communication interface is used to receive second information and / or third information sent by a remote terminal. The second information includes an identifier of a first alternative relay terminal selected by the remote terminal. The third information includes an identifier of a second alternative relay terminal. The processor is used to select a target path for relay switching based on the second information and / or the third information. The target path includes a target relay terminal and / or a target network-side device. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0300] Specifically, embodiments of this application also provide a network-side device. For example... Figure 12As shown, the network-side device 1200 includes: an antenna 121, a radio frequency (RF) device 122, a baseband device 123, a processor 124, and a memory 125. The antenna 121 is connected to the RF device 122. In the uplink direction, the RF device 122 receives information through the antenna 121 and transmits the received information to the baseband device 123 for processing. In the downlink direction, the baseband device 123 processes the information to be transmitted and sends it to the RF device 122. The RF device 122 processes the received information and transmits it through the antenna 121.

[0301] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 123, which includes a baseband processor.

[0302] The baseband device 123 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 12 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 125 via a bus interface to call the program in the memory 125 and execute the network device operation shown in the above method embodiment.

[0303] The network-side device may also include a network interface 126, such as a common public radio interface (CPRI).

[0304] Specifically, the network-side device 1200 of this embodiment further includes: instructions or programs stored in memory 125 and executable on processor 124, wherein processor 124 calls the instructions or programs in memory 125 to execute. Figure 8 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0305] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described relay switching processing method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0306] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0307] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described relay switching processing method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0308] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0309] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described relay handover processing method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0310] This application also provides a communication system, including: a remote terminal, a relay terminal, and a network-side device. The remote terminal can be used to execute the steps of the relay handover processing method described above, the network-side device can be used to execute the steps of the relay handover processing method described above, and the relay terminal can be used to execute the steps of the relay handover processing method described above.

[0311] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0312] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0313] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A relay handover processing method, characterized in that, include: The remote terminal obtains first information from the relay terminal, the first information being used to indicate the connection status of the relay terminal, the relay terminal including one or more; The remote terminal performs a first operation based on the first information; the first operation includes: Select a backup relay terminal and send second information to the network-side device. The second information includes the identifier of the first backup relay terminal selected by the remote terminal. The second information is used to assist the network-side device in selecting the target path for relay switching. The target path includes the target relay terminal and / or the target network-side device. The remote terminal selects a candidate relay terminal based on the first information, including: The remote terminal selects a candidate relay terminal based on the first information and the first principle; wherein, the first principle includes: Relay terminals in the connected state are selected as the first backup relay terminals with the highest priority. The inactive relay terminal is selected as the first alternative relay terminal with the second priority. The relay terminal corresponding to the first information, which includes the relay terminal's willingness to enter the connected state, is selected as the first alternative relay terminal with the third priority. The idle relay terminal is selected as the first backup relay terminal with the fourth priority.

2. The method according to claim 1, characterized in that, The identifier of the first candidate relay terminal includes at least one of the following: The globally unique temporary identifier for 5G is 5G-GUTI. 5G Temporary Mobile Subscription Identifier (5G-STMSI); Temporary Identifier for Cellular Wireless Network (C-RNTI) Inactive wireless network temporary identifier (I-RNTI); Layer 2 ID.

3. The method according to claim 1 or 2, characterized in that, The first information includes at least one of the following: the cell radio network temporary identifier (C-RNTI) of the relay terminal, the inactive radio network temporary identifier (I-RNTI) of the relay terminal, the 5G temporary mobile subscription identifier (5G-STMSI) of the relay terminal, and the connection status information of the relay terminal.

4. The method according to any one of claims 1-3, characterized in that, The second information also includes: the identification information of the serving cell of the first alternative relay terminal.

5. The method according to any one of claims 1-4, characterized in that, Before the remote terminal obtains the first information from the relay terminal, the method further includes: The remote terminal sends fourth information to the relay terminal, the fourth information including at least one of the following: The first request message requests the relay terminal to send connection status information; A second request message is sent requesting the relay terminal to send information indicating its willingness to enter the connected state; The third request message requests the relay terminal to enter the connected state; The remote terminal obtains the first information of the relay terminal, including: The remote terminal obtains the first information sent by the relay terminal based on the fourth information.

6. A relay handover processing method, characterized in that, include: The network-side device receives the second information sent by the remote terminal; The second information includes the identifier of the first alternative relay terminal selected by the remote terminal; The network-side device selects the target path for relay switching based on the second information. The target path includes the target relay terminal and / or the target network-side device. The network-side device selects the target path for relay handover based on the second information, including: The network-side device selects a target relay terminal and / or a target network-side device for the remote terminal from the first candidate relay terminals based on the identifier of the first candidate relay terminal selected by the remote terminal. The first candidate relay terminal is selected and determined by the remote terminal based on the connection status of the relay terminal and a first principle, wherein the first principle includes: Relay terminals in the connected state are selected as the first backup relay terminals with the highest priority. The inactive relay terminal is selected as the first alternative relay terminal with the second priority. The relay terminal corresponding to the first information, which includes the relay terminal's willingness to enter the connected state, is selected as the first alternative relay terminal with the third priority. The idle relay terminal is selected as the first backup relay terminal with the fourth priority.

7. The method according to claim 6, characterized in that, The identifier of the first candidate relay terminal includes at least one of the following: The globally unique temporary identifier for 5G is 5G-GUTI. 5G Temporary Mobile Subscription Identifier (5G-STMSI); Temporary Identifier for Cellular Wireless Network (C-RNTI) Inactive wireless network temporary identifier (I-RNTI); Layer 2 ID.

8. The method according to claim 6 or 7, characterized in that, The second information also includes: the identification information of the serving cell of the first alternative relay terminal.

9. A relay switching processing device, characterized in that, include: The first acquisition module is used to acquire first information of the relay terminal, wherein the first information is used to indicate the connection status of the relay terminal; The relay terminal includes one or more; A first execution module is configured to perform a first operation based on the first information; the first operation includes: Select a backup relay terminal and send second information to the network-side device. The second information includes the identifier of the first backup relay terminal selected by the remote terminal. The second information is used to assist the network-side device in selecting the target path for relay switching. The target path includes the target relay terminal and / or the target network-side device. The first execution module includes: The first selection submodule is used to select candidate relay terminals based on the first information and the first principle; wherein the first principle includes: Relay terminals in the connected state are selected as the first backup relay terminals with the highest priority. The inactive relay terminal is selected as the first alternative relay terminal with the second priority. The relay terminal corresponding to the first information, which includes the relay terminal's willingness to enter the connected state, is selected as the first alternative relay terminal with the third priority. The idle relay terminal is selected as the first backup relay terminal with the fourth priority.

10. The apparatus according to claim 9, characterized in that, The identifier of the first candidate relay terminal includes at least one of the following: The globally unique temporary identifier for 5G is 5G-GUTI. 5G Temporary Mobile Subscription Identifier (5G-STMSI); Temporary Identifier for Cellular Wireless Network (C-RNTI) Inactive wireless network temporary identifier (I-RNTI); Layer 2 ID.

11. The apparatus according to claim 9 or 10, characterized in that, The first information includes at least one of the following: the cell radio network temporary identifier (C-RNTI) of the relay terminal, the inactive radio network temporary identifier (I-RNTI) of the relay terminal, the 5G temporary mobile subscription identifier (5G-STMSI) of the relay terminal, and the connection status information of the relay terminal.

12. The apparatus according to any one of claims 9-11, characterized in that, The second information also includes: the identification information of the serving cell of the first alternative relay terminal.

13. The apparatus according to any one of claims 9-12, characterized in that, The device further includes: A first transmitting module is configured to transmit fourth information to a relay terminal, the fourth information including at least one of the following: The first request message requests the relay terminal to send connection status information; A second request message is sent requesting the relay terminal to send information indicating its willingness to enter the connected state; The third request message requests the relay terminal to enter the connected state; The first acquisition module includes: The first acquisition submodule is used to acquire the first information sent by the relay terminal based on the fourth information.

14. A remote terminal, characterized in that, It includes a processor and a memory, the memory storing programs or instructions that can run on the processor, the programs or instructions being executed by the processor to implement the steps of the relay switching processing method as described in any one of claims 1 to 5.

15. A relay switching processing device, characterized in that, include: The first receiving module is used to receive the second information sent by the remote terminal; The second information includes the identifier of the first alternative relay terminal selected by the remote terminal; The selection module is used to select the target path for relay switching based on the second information, wherein the target path includes the target relay terminal and / or the target network-side device; The selection module includes: The first selection submodule is used to select a target relay terminal and / or a target network-side device for the remote terminal from the first candidate relay terminals according to the identifier of the first candidate relay terminal selected by the remote terminal. The first candidate relay terminal is selected and determined by the remote terminal based on the connection status of the relay terminal and a first principle, wherein the first principle includes: Relay terminals in the connected state are selected as the first backup relay terminals with the highest priority. The inactive relay terminal is selected as the first alternative relay terminal with the second priority. The relay terminal corresponding to the first information, which includes the relay terminal's willingness to enter the connected state, is selected as the first alternative relay terminal with the third priority. The idle relay terminal is selected as the first backup relay terminal with the fourth priority.

16. The apparatus according to claim 15, characterized in that, The identifier of the first candidate relay terminal includes at least one of the following: The globally unique temporary identifier for 5G is 5G-GUTI. 5G Temporary Mobile Subscription Identifier (5G-STMSI); Temporary Identifier for Cellular Wireless Network (C-RNTI) Inactive wireless network temporary identifier (I-RNTI); Layer 2 ID.

17. The apparatus according to claim 15 or 16, characterized in that, The second information also includes: the identification information of the serving cell of the first alternative relay terminal.

18. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the relay switching processing method as described in any one of claims 6 to 8.

19. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the relay handover processing method as described in any one of claims 1-5, or implement the steps of the relay handover processing method as described in any one of claims 6-8.

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