Network switching method, network device and terminal device

Abstract

A method for switching networks, a network device, and a terminal device are provided. The method includes: the network device obtains channel quality status information, and the channel quality status information is used to reflect the channel quality of the second network; when the network device determines that the first service ends or the service network of the terminal device does not support the first service, it determines whether to switch the service network from the first network to the second network according to the channel quality status information. In an embodiment of the present invention, when the first service ends or the service network of the terminal device does not support the first service, the network device determines whether to switch the service network of the network device from the first network to the second network. Therefore, it can ensure that the user uses the second network to the greatest extent, thereby improving the user experience.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communications, and more specifically, to a method for switching networks, a network device, and a terminal device. Background Art

[0002] In the early stage of 5G New Radio (NR) network deployment, in certain scenarios (for example, network congestion, the need for voice services, etc.), the 5G NR network will fall back to the 4G Long Term Evolution (LTE) network. However, at this stage, after falling back from the 5G NR network to the 4G LTE network, there is no explanation on how to return to the 5G NR network. Therefore, after falling back from the 5G NR network to the 4G LTE network, it is impossible to quickly return to the 5G NR network, affecting the user experience. Summary of the invention

[0003] Provided are a network switching method, network device, and terminal device, which can ensure that users can use the 5G NR network to the greatest extent, thereby improving user experience.

[0004] In a first aspect, a method for switching a network is provided, comprising:

[0005] The network device acquires channel quality status information, where the channel quality status information is used to reflect the channel quality of the second network;

[0006] When the network device determines that the first service is terminated or the service network of the terminal device does not support the first service, the network device determines whether to switch the service network from the first network to the second network according to the channel quality status information.

[0007] In the embodiment of the present invention, when the first service ends or the service network of the terminal device does not support the first service, the network device determines whether to switch the service network of the network device from the first network to the second network. Thus, it can ensure that the user can use the 5G NR network to the greatest extent, thereby improving the user experience.

[0008] In some possible implementations, the channel quality status information is a measurement result report sent by the terminal device.

[0009] In some possible implementations, before the network device receives the measurement result report sent by the terminal device, the method further includes:

[0010] The network device sends a release command to the terminal device, where the release command is used to instruct the terminal device to release the first service; wherein the network device receives a measurement result report sent by the terminal device, including:

[0011] The network device obtains a response message of the release command sent by the terminal device, where the response message includes the measurement result report.

[0012] In some possible implementations, the network device receiving the measurement result report sent by the terminal device includes:

[0013] The network device periodically receives the measurement result report sent by the terminal device.

[0014] In some possible implementations, the network device receiving the measurement result report sent by the terminal device includes:

[0015] The network device receives the measurement result report sent by the terminal device within a specific time unit.

[0016] In some possible implementations, the terminal device sends the measurement result report a fixed number of times.

[0017] In some possible implementations, before the network device receives the measurement result report sent by the terminal device, the method further includes:

[0018] The network device sends configuration information to the terminal device, where the configuration information includes at least one of the following information:

[0019] The sending cycle, number of times and specific time unit of the measurement result report;

[0020] The network device receiving the measurement result report sent by the terminal device includes:

[0021] The network device receives the measurement result report according to the indication information.

[0022] In some possible implementations, before the network device receives the measurement result report sent by the terminal device, the method further includes:

[0023] The network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device.

[0024] In some possible implementations, the network device sending the first indication information to the terminal device includes:

[0025] The network device sends radio resource control RRC signaling to the terminal device, and the RRC signaling includes the first indication information.

[0026] In some possible implementations, the network device sending the first indication information to the terminal device includes:

[0027] The network device sends or receives data on the first bearer, and instructs the terminal device to send a measurement result report to the network device through the first bearer; or,

[0028] The network device sends or receives a first quality of service QoS flow or a first data flow, and instructs the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

[0029] In some possible implementations, the network device sending the first indication information to the terminal device includes:

[0030] The network device sends a release command to the terminal device, where the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

[0031] In some possible implementations, the first service is used to trigger the terminal device to send the measurement result report to the network device.

[0032] In some possible implementations, the channel quality status information is second indication information sent by the terminal device, and the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; wherein, when the network device determines that the first service ends or the service network does not support the first service, determining whether to switch the service network of the terminal device from the first network to the second network according to the channel quality status information includes:

[0033] When the network device determines that the first service is terminated or the service network does not support the first service, the network device determines whether to switch the service network of the terminal device from the first network to the second network according to the second indication information.

[0034] In some possible implementations, the network device obtains the channel quality status information, including:

[0035] The network device obtains the channel quality status information from candidate networks, where the candidate networks include the second network.

[0036] In some possible implementations, the candidate network may obtain the channel quality status information through an uplink signal of a terminal device.

[0037] In some possible implementations, the candidate network is a network that has a direct or indirect interface with the network where the network device is located.

[0038] In some possible implementations, the channel quality status information includes channel quality status information of a candidate network.

[0039] In some possible implementations, the first service is any one of the following:

[0040] Services on the second bearer, a second data flow and a second quality of service QoS flow.

[0041] In a second aspect, a method for switching a network is provided, comprising:

[0042] The terminal device determines channel quality status information, where the channel quality status information is used to reflect the channel quality of the second network;

[0043] The terminal device sends the channel quality status information to the network device so that when the network device determines that the first service has ended or the service network of the terminal device does not support the first service, it determines whether to switch the service network from the first network to the second network based on the channel quality status information.

[0044] In some possible implementations, the channel quality status information is a measurement result report of the terminal device; wherein the terminal device sends the channel quality status information to the network device, including:

[0045] The terminal device sends the measurement result report to the network device.

[0046] In some possible implementations, before the terminal device sends the measurement result report to the network device, the method further includes:

[0047] The terminal device receives a release command sent by the network device, where the release command is used to instruct the terminal device to release the first service; wherein the terminal device sends the measurement result report to the network device, including:

[0048] The terminal device sends a response message of the release command to the network device, and the response message includes the measurement result report.

[0049] In some possible implementations, the terminal device sending the measurement result report to the network device includes:

[0050] The terminal device periodically sends the measurement result report to the network device.

[0051] In some possible implementations, the terminal device sending the measurement result report to the network device includes:

[0052] The terminal device sends the measurement result report to the network device within a specific time unit.

[0053] In some possible implementations, the terminal device sends the measurement result report a fixed number of times.

[0054] In some possible implementations, before the terminal device sends the measurement result report to the network device, the method further includes:

[0055] The terminal device receives configuration information sent by the network device, where the configuration information includes at least one of the following information: a sending period, a number of times, and a specific time unit of the measurement result report; wherein the terminal device sends the measurement result report to the network device, including:

[0056] The terminal device sends the measurement result report to the network device according to the indication information.

[0057] In some possible implementations, before the terminal device sends the measurement result report to the network device, the method further includes:

[0058] The terminal device receives first indication information sent by the network device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device.

[0059] In some possible implementations, the terminal device receiving the first indication information sent by the network device includes:

[0060] The terminal device receives radio resource control RRC signaling sent by the network device, and the RRC signaling includes the first indication information.

[0061] In some possible implementations, the terminal device receiving the first indication information sent by the network device includes:

[0062] The terminal device receives or sends data on the first bearer, and instructs the terminal device to send the measurement result report to the network device through the first bearer; or,

[0063] The terminal device receives or sends a first quality of service QoS flow or a first data flow, and instructs the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

[0064] In some possible implementations, the terminal device receiving the first indication information sent by the network device includes:

[0065] The terminal device receives a release command sent by the network device, where the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

[0066] In some possible implementations, the terminal device sending the measurement result report to the network device includes:

[0067] When the terminal device starts the second service, the protocol of the second service triggers the terminal device to send the measurement result report to the network device.

[0068] In some possible implementations, the terminal device determines the channel quality status information, including:

[0069] The terminal device generates second indication information, where the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; wherein the terminal device sends the channel quality status information to the network device, including:

[0070] The terminal device sends the second indication information to the network device.

[0071] In some possible implementations, the terminal device generates the second indication information, including:

[0072] The indication information is generated when the channel quality status information of the second network is greater than or equal to a first threshold; or the indication information is generated when the status packet error rate of the second network is less than or equal to a second threshold.

[0073] In some possible implementations, the terminal device determines the channel quality status information, including:

[0074] The network device obtains the channel quality status information from candidate networks, where the candidate networks include the second network.

[0075] In some possible implementations, the candidate network may obtain the channel quality status information through an uplink signal of a terminal device.

[0076] In some possible implementations, the candidate network is a network that has a direct or indirect interface with the network where the network device is located.

[0077] In some possible implementations, the channel quality status information includes channel quality status information of a candidate network.

[0078] In some possible implementations, the first service is any one of the following:

[0079] Services on the second bearer, a second data flow and a second quality of service QoS flow.

[0080] In a third aspect, a network device is provided, including:

[0081] a transceiver unit, configured to obtain channel quality status information, wherein the channel quality status information is used to reflect the channel quality of the second network;

[0082] A processing unit is used to determine whether to switch the service network from the first network to the second network according to the channel quality status information when it is determined that the first service is terminated or the service network of the terminal device does not support the first service.

[0083] In a fourth aspect, a network device is provided, including:

[0084] A transceiver, configured to obtain channel quality status information, wherein the channel quality status information is used to reflect the channel quality of the second network;

[0085] The processor is used to determine whether to switch the service network from the first network to the second network according to the channel quality status information when it is determined that the first service is terminated or the service network of the terminal device does not support the first service.

[0086] In a fifth aspect, a terminal device is provided, including:

[0087] a processing unit, configured to determine channel quality status information, wherein the channel quality status information is used to reflect the channel quality of the second network;

[0088] The transceiver unit is used to send the channel quality status information to the network device so that when the network device determines that the first service has ended or the service network of the terminal device does not support the first service, it determines whether to switch the service network from the first network to the second network based on the channel quality status information.

[0089] In a sixth aspect, a terminal device is provided, including:

[0090] a processor, configured to determine channel quality status information, wherein the channel quality status information is used to reflect the channel quality of the second network;

[0091] The transceiver is used to send the channel quality status information to the network device so that when the network device determines that the first service has ended or the service network of the terminal device does not support the first service, it determines whether to switch the service network from the first network to the second network based on the channel quality status information.

[0092] In a seventh aspect, a computer-readable medium is provided for storing a computer program, wherein the computer program includes instructions for executing the method embodiment of the first aspect or the second aspect.

[0093] In an eighth aspect, a computer chip is provided, comprising: an input interface, an output interface, at least one processor, and a memory, wherein the processor is used to execute the code in the memory, and when the code is executed, the processor can implement the various processes performed by the network device in the method for competing for random access in the first aspect or the second aspect above.

[0094] In the ninth aspect, a computer chip is provided, comprising: an input interface, an output interface, at least one processor, and a memory, wherein the processor is used to execute the code in the memory, and when the code is executed, the processor can implement the various processes performed by the terminal device in the method for competing for random access in the first aspect or the second aspect mentioned above.

[0095] In the tenth aspect, a communication system is provided, comprising the network device and terminal device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0096] Figure 1 This is an example of an application scenario of the present invention.

[0097] Figure 2 is a schematic flow chart of a network switching method according to an embodiment of the present invention.

[0098] Figure 3 is another schematic flow chart of a network switching method according to an embodiment of the present invention.

[0099] Figure 4 It is a schematic block diagram of a network device according to an embodiment of the present invention.

[0100] Figure 5 is a schematic block diagram of another network device according to an embodiment of the present invention.

[0101] Figure 6 It is a schematic block diagram of a terminal device according to an embodiment of the present invention.

[0102] Figure 7 is a schematic block diagram of another terminal device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0103] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0104] The technical solution of the embodiment of the present application can be applied to the 5G NR communication system.

[0105] Figure 1 A wireless communication system 100 applied in an embodiment of the present application is shown. The wireless communication system 100 may include an access network device 110. The access network device 110 may be a device that communicates with a terminal device. The access network device 110 may provide communication coverage for a specific geographical area, and may communicate with a terminal device (e.g., UE) located in the coverage area. Optionally, the access network device 110 may be a next generation radio access network (NG RAN), or a base station (gNB) in an NR system, or a wireless controller in a cloud radio access network (CRAN), or the access network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, or a network device in a future evolved public land mobile network (PLMN). Optionally, the access network device 110 may also be a base station in an LTE system, for example, an evolved universal terrestrial radio access network (E-UTRAN) device.

[0106] The wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the access network device 110. The terminal device 120 may be mobile or fixed. Optionally, the terminal device 120 may refer to an access terminal, a user equipment (UE), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN, etc.

[0107] The wireless communication system 100 also includes a core network device 130 for communicating with the access network device. Optionally, the core network device 130 may be a 5G core network device, such as an access and mobility management function (AMF), or a session management function (SMF). Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device of an LTE network, such as a Session Management Function + Core Packet Gateway (SMF + PGW-C) device.

[0108] It should be understood that SMF+PGW-C can simultaneously implement the functions that SMF and PGW-C can implement.

[0109] Optionally, in an embodiment of the present application, AMF may exchange information with SMF, for example, SMF obtains some information on the wireless access network side from AMF.

[0110] Optionally, in an embodiment of the present application, the AMF may obtain a fallback identifier from the wireless access network, or a message indicating that the flow / first bearer for the terminal device has not been successfully established.

[0111] Figure 1 An access network device, a core network device and two terminal devices are exemplarily shown. Optionally, the wireless communication system 100 may include multiple access network devices and the coverage area of ​​each access network device may include other numbers of terminal devices, which is not limited in the embodiments of the present application.

[0112] Optionally, the wireless communication system 100 may also include a mobile management entity (Mobile Management Entity, MME), a unified data management (Unified Data Management, UDM), an authentication server function (Authentication Server Function, AUSF), a user plane function (User Plane Function, UPF), a signaling gateway (Signaling Gateway, SGW) and other network entities, which are not specifically limited in the embodiments of the present application.

[0113] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0114] In the early stage of 5G New Radio (NR) network deployment, in certain scenarios (for example, network congestion, the need for voice services, etc.), the 5G NR network will fall back to the 4G Long Term Evolution (LTE) network. However, at this stage, after falling back from the 5G NR network to the 4G LTE network, there is no explanation on how to return to the 5G NR network. Therefore, after falling back from the 5G NR network to the 4G LTE network, it is impossible to quickly return to the 5G NR network, affecting the user experience.

[0115] In order to solve the above problem, an embodiment of the present invention provides a method for switching networks.

[0116] When the first service ends or the service network of the terminal device does not support the first service, the network device determines whether to switch the service network of the network device from the first network to the second network. Thus, it can ensure that the user can use the 5G NR network to the greatest extent, thereby improving the user experience.

[0117] Specifically, if Figure 2 As shown, the method for switching networks includes:

[0118] 210. The terminal device determines channel quality status information.

[0119] 220. The network device sends the channel quality status information to the terminal device.

[0120] 230. When the network device determines that the first service is terminated or the service network of the terminal device does not support the first service, the network device determines whether to switch the service network from the first network to the second network according to the channel quality status information.

[0121] Specifically, the network device obtains channel quality status information, which is used to reflect the channel quality of the second network; when the network device determines that the first service has ended or the service network of the terminal device does not support the first service, it determines whether to switch the service network from the first network to the second network based on the channel quality status information.

[0122] In an embodiment of the present invention, the quality of service (QoS) identification level can be used to distinguish the bearers / streams used to perform different services. For example, in an LTE network, the quality of service level identifier (QoS Class Identifier, QCI) can be divided into 9 levels (1-9), and the bearer with QCI=1 is used to perform voice services, the bearer with QCI=2 is used to perform video services, and the bearer with QCI=9 is used to perform data services. For another example, in an NR network, the quality of service identifier (5G Quality of Service Identifier, 5QI) under the 5G network can also be divided into multiple levels, such as a stream with 5QI=1 can be used to perform voice services.

[0123] In other words, the first service in the embodiment of the present invention may be any one of the following: a service on the second bearer, a second data flow, and a second quality of service QoS flow.

[0124] For example, the first service may be a 5QI=1 stream for performing a voice service.

[0125] It should be understood that the network device used to determine whether to switch networks in the embodiment of the present invention may be an access network device.

[0126] It should also be understood that the method for switching networks in the embodiment of the present invention can be applicable to the scenario where the first service ends or the service network of the terminal device does not support the first service. Figure 3 The application scenarios of the embodiments of the present invention are exemplified.

[0127] Figure 3 The figure is a schematic diagram of the RAT / EPS fallback process of an embodiment of the present invention. EPS is the collective name of the Evolved UMTS Terrestrial Radio Access Network (Evolved UMTS Terrestrial Radio Access Network, E-UTRAN) and EPC, and 5GS is the collective name of the core network (5G Core, 5GC) of the NR network and the 5G wireless access network.

[0128] like Figure 3 As shown in FIG. 1 , the Radio Access Technology (RAT) / EPS fallback process includes:

[0129] 310. The terminal device sends a session request to an information management system (IMS).

[0130] 320. The IMS requests the Policy Charging and Rules Function (PCRF) to establish Voice & Video over IMS (VoIMS).

[0131] 330. PCRF sends a 5QI=1 flow generation request to PGW-C+SMF.

[0132] 340, PGW-C+SMF establishes 5QI=1 flow.

[0133] 350. PGW-C+SMF sends a 5QI=1 flow generation request to AMF.

[0134] 360. AMF sends a 5QI=1 flow generation request to NG RAN.

[0135] 370a, NG RAN sends a response message to the Mobility Management Function (AMF).

[0136] 370b, AMF sends a response message to PGW-C+SMF.

[0137] 380, measuring channel quality between an evolved UMTS terrestrial radio access network (Evolved UMTS Terrestrial Radio Access Network, E-UTRAN) and a terminal device.

[0138] 390a, triggering RAT fallback.

[0139] 390b, triggering a decline in 5GS->EPS.

[0140] 3110, VoLTE (Voice over LTE) call setting, wherein VoLTE is a voice service based on IMS.

[0141] 3120. The IMS sends a request response to the terminal device.

[0142] It is understandable that during the decline, three situations may occur:

[0143] 1) 5GC remains unchanged, and AMF does not change during the RAT fallback process (without AMF Relocation).

[0144] In this case, NG-RAN sends a reject indication to AMF in 370a, indicating that the reject is due to the ongoing Hand Over (HO). After the HO is completed, AMF is responsible for immediately triggering the establishment of the QCI=1 bearer.

[0145] 2) 5GC remains unchanged, but AMF changes during the fallback process of RAT (With AMF Relocation).

[0146] In this case, NG-RAN will send a reject indication to AMF in 370a, indicating that the reject is caused by HO in progress. When AMF changes, AMF will send a reject indication to SMF, indicating that the 5QI=1 flow just sent by SMF has not been successfully established (rejected) because HO is in progress. After HO is completed, SMF is responsible for immediately triggering the establishment of QCI=1 bearer.

[0147] 3) 5GC->EPC falls back, and RAT also switches from NR->LTE (EPS Fallback).

[0148] In this case, during the cross-system switching process, SMF is a module jointly set up by SMF and PGW-C (generally referred to as SMF+PGW-C), which is responsible for triggering the establishment of QCI=1 bearer immediately after completing the cross-system switching.

[0149] In the embodiment of the present invention, after the terminal device completes the VoLTE voice, for the UE that performs 5G to 4G fallback specifically for establishing voice, the channel quality status information can be used to determine whether the UE returns to 5G after completing the voice on the 4G network. It should be understood that the method of the embodiment of the present invention is not limited to Figure 3 For example, the method for switching networks in the embodiment of the present invention can also be applied to the scenario of whether the terminal device falls back from 5G to 4G when VoIMS is triggered.

[0150] It should be understood that the channel quality status information in the embodiment of the present invention can be used to reflect the channel quality of at least one network. For example, the channel quality status information can be used to reflect the channel quality of the second network.

[0151] The channel quality status information of the embodiment of the present invention is exemplarily described below:

[0152] In one embodiment, the channel quality status information is a measurement result report sent by the terminal device.

[0153] Optionally, before the network device receives the measurement result report sent by the terminal device, the network device sends a release command to the terminal device, and the release command is used to instruct the terminal device to release the first service; the network device obtains a response message to the release command sent by the terminal device, and the response message includes the measurement result report.

[0154] It should be understood that the embodiment of the present invention does not specifically limit the implementation manner in which the network device receives the measurement result report sent by the terminal device.

[0155] For example, the network device may periodically receive the measurement result report sent by the terminal device.

[0156] For another example, the network device may receive the measurement result report sent by the terminal device within a specific time unit.

[0157] For another example, the terminal device sends the measurement result report a fixed number of times.

[0158] Further, before receiving the measurement result report sent by the terminal device, the network device may send configuration information to the terminal device, where the configuration information includes at least one of the following information:

[0159] The measurement result report is sent at a specific period, number of times, and time unit.

[0160] Thus, the network device receives the measurement result report according to the indication information.

[0161] Optionally, in an embodiment of the present invention, before receiving the measurement result report sent by the terminal device, the network device may send first indication information to the terminal device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device.

[0162] For example, the network device may send a radio resource control (Radio Resource Control, RRC) signaling to the terminal device, where the RRC signaling includes the first indication information.

[0163] For another example, the network device may send or receive data on a first bearer, and instruct the terminal device to send a measurement result report to the network device through the first bearer.

[0164] For another example, the network device may send or receive a first quality of service (QoS) flow or a first data flow, and instruct the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

[0165] For another example, the network device may send a release command to the terminal device, where the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

[0166] It should be understood that the embodiment of the present invention is not limited to instructing the terminal device to send the measurement result report to the network device through the first indication information. For example, the first service in the embodiment of the present invention can also be used to trigger the terminal device to send the measurement result report to the network device.

[0167] In another embodiment, the channel quality status information is second indication information sent by the terminal device, and the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; thus, when the network device determines that the first service has ended or the service network does not support the first service, it determines whether to switch the service network of the terminal device from the first network to the second network based on the second indication information.

[0168] In another embodiment, the network device may obtain the channel quality status information from a candidate network, where the candidate network includes the second network.

[0169] Optionally, the candidate network may obtain the channel quality status information through an uplink signal of the terminal device.

[0170] Optionally, the candidate network is a network that has a direct or indirect interface with the network where the network device is located.

[0171] Optionally, the channel quality status information includes channel quality status information of a candidate network.

[0172] It should be understood that the method for switching networks in the embodiment of the present invention is intended to: when the service network of the terminal device needs to be switched, determine whether to switch through the channel quality status information. It should be noted that the channel quality status information in the embodiment of the present invention is information used to determine whether to switch the service network of the terminal device when the first service meets certain conditions. That is, the network device needs to obtain the channel quality status information in advance before making a judgment.

[0173] Figure 4 It is a schematic block diagram of a network device according to an embodiment of the present invention.

[0174] Specifically, if Figure 4 As shown, the network device 400 includes:

[0175] The transceiver unit 410 is used to obtain channel quality status information, which is used to reflect the channel quality of the second network; the processing unit 420 is used to determine whether to switch the service network from the first network to the second network based on the channel quality status information when the first service ends or the service network of the terminal device does not support the first service.

[0176] Optionally, the channel quality status information is a measurement result report sent by the terminal device.

[0177] Optionally, the transceiver unit 410 is specifically used to: before receiving the measurement result report sent by the terminal device, send a release command to the terminal device, the release command is used to instruct the terminal device to release the first service; obtain a response message to the release command sent by the terminal device, the response message including the measurement result report.

[0178] Optionally, the transceiver unit 410 is more specifically used to: periodically receive the measurement result report sent by the terminal device.

[0179] Optionally, the transceiver unit 410 is more specifically used to: receive the measurement result report sent by the terminal device within a specific time unit.

[0180] Optionally, the terminal device sends the measurement result report a fixed number of times.

[0181] Optionally, the transceiver unit 410 is more specifically used to: before receiving the measurement result report sent by the terminal device, send configuration information to the terminal device, the configuration information including at least one of the following information: the sending period, number of times and specific time unit of the measurement result report; and receive the measurement result report according to the indication information.

[0182] Optionally, the transceiver unit 410 is further configured to:

[0183] Before receiving the measurement result report sent by the terminal device, the network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device.

[0184] Optionally, the transceiver unit 410 is specifically used to: send radio resource control RRC signaling to the terminal device, where the RRC signaling includes the first indication information.

[0185] Optionally, the transceiver unit 410 is specifically used to: send or receive data on a first bearer, and instruct the terminal device to send a measurement result report to the network device through the first bearer; or, send or receive a first quality of service QoS flow or a first data flow, and instruct the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

[0186] Optionally, the transceiver unit 410 is specifically used to: send a release command to the terminal device, where the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

[0187] Optionally, the first service is used to trigger the terminal device to send the measurement result report to the network device.

[0188] Optionally, the channel quality status information is second indication information sent by the terminal device, and the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; wherein, the processing unit 420 is specifically used to: when it is determined that the first service is ended or the service network does not support the first service, determine whether to switch the service network of the terminal device from the first network to the second network according to the second indication information.

[0189] Optionally, the transceiver unit 410 is specifically used to: obtain the channel quality status information from a candidate network, and the candidate network includes the second network.

[0190] Optionally, the candidate network may obtain the channel quality status information through an uplink signal of the terminal device.

[0191] Optionally, the candidate network is a network that has a direct or indirect interface with the network where the network device is located.

[0192] Optionally, the channel quality status information includes channel quality status information of a candidate network.

[0193] It should be noted that the transceiver unit 410 may be implemented by a transceiver, and the processing unit 420 may be implemented by a processor. Figure 5 As shown, the network device 500 may include a processor 510, a transceiver 520, and a memory 530. The memory 530 may be used to store indication information, and may also be used to store codes and instructions executed by the processor 510. The various components in the network device 500 are connected via a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to a data bus.

[0194] Figure 5 The network device 500 shown can implement the aforementioned Figure 2 and Figure 3 To avoid repetition, each process implemented by the access network device in the method embodiment will not be described here.

[0195] Figure 6 It is a schematic block diagram of a terminal device according to an embodiment of the present invention.

[0196] like Figure 6 As shown, the terminal device 600 includes:

[0197] The processing unit 610 is used to determine channel quality status information, where the channel quality status information is used to reflect the channel quality of the second network; the transceiver unit 620 is used to send the channel quality status information to the network device so that when the network device determines that the first service has ended or the service network of the terminal device does not support the first service, it determines whether to switch the service network from the first network to the second network based on the channel quality status information.

[0198] Optionally, the channel quality status information is a measurement result report of the terminal device; wherein the transceiver unit 620 is specifically used to: send the measurement result report to the network device.

[0199] Optionally, the transceiver unit 620 is more specifically used to: before sending the measurement result report to the network device, receive a release command sent by the network device, the release command is used to instruct the terminal device to release the first service; send a response message of the release command to the network device, the response message including the measurement result report.

[0200] Optionally, the transceiver unit 620 is more specifically configured to: periodically send the measurement result report to the network device.

[0201] Optionally, the transceiver unit 620 is more specifically configured to: send the measurement result report to the network device within a specific time unit.

[0202] Optionally, the terminal device sends the measurement result report a fixed number of times.

[0203] Optionally, the transceiver unit 620 is more specifically used to: before sending the measurement result report to the network device, receive configuration information sent by the network device, the configuration information including at least one of the following information: the sending period, number of times and specific time unit of the measurement result report; and send the measurement result report to the network device according to the indication information.

[0204] Optionally, the transceiver unit 620 is further used to: before sending the measurement result report to the network device, receive first indication information sent by the network device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device.

[0205] Optionally, the transceiver unit 620 is specifically used to: receive radio resource control RRC signaling sent by the network device, where the RRC signaling includes the first indication information.

[0206] Optionally, the transceiver unit 620 is specifically used to: receive or send data on a first bearer, and instruct the terminal device to send the measurement result report to the network device through the first bearer; or, receive or send a first quality of service QoS flow or a first data flow, and instruct the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

[0207] Optionally, the transceiver unit 620 is specifically used to: receive a release command sent by the network device, where the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

[0208] Optionally, the transceiver unit 620 is specifically configured to: when starting the second service, a protocol of the second service triggers the terminal device to send the measurement result report to the network device.

[0209] Optionally, the processing unit 610 is specifically used to: generate second indication information, the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; wherein the transceiver unit 620 is specifically used to: send the second indication information to the network device.

[0210] Optionally, the processing unit 610 is more specifically used to: generate the indication information when the channel quality status information of the second network is greater than or equal to a first threshold; or generate the indication information when the status packet error rate of the second network is less than or equal to a second threshold.

[0211] Optionally, the processing unit 610 is specifically configured to: obtain the channel quality status information from a candidate network, where the candidate network includes the second network.

[0212] Optionally, the candidate network may obtain the channel quality status information through an uplink signal of the terminal device.

[0213] Optionally, the candidate network is a network that has a direct or indirect interface with the network where the network device is located.

[0214] Optionally, the channel quality status information includes channel quality status information of a candidate network.

[0215] Optionally, the first service is any one of the following: a service on a second bearer, a second data flow, and a second quality of service QoS flow.

[0216] It should be noted that the processing unit 610 may be implemented by a processor, and the transceiver unit 620 may be implemented by a transceiver. Figure 7As shown, the terminal device 700 may include a processor 710, a transceiver 720 and a memory 730. The memory 730 may be used to store indication information, and may also be used to store codes and instructions executed by the processor 710. The various components in the terminal device 700 are connected via a bus system, wherein the bus system includes a power bus, a control bus and a status signal bus in addition to a data bus.

[0217] Figure 7 The terminal device 700 shown can implement the aforementioned Figure 2 and Figure 3 To avoid repetition, each process implemented by the terminal device in the method embodiment will not be described here.

[0218] It should be understood that the method embodiments in the embodiments of the present invention can be applied to a processor or implemented by a processor.

[0219] In the implementation process, each step of the method embodiment in the embodiment of the present invention can be completed by the hardware integrated logic circuit in the processor or the instruction in the form of software. More specifically, the steps of the method disclosed in the embodiment of the present invention can be directly embodied as a hardware decoding processor, or a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0220] The processor may be an integrated circuit chip with signal processing capability, and may implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present invention. For example, the processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. In addition, the general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0221] In addition, in the embodiment of the present invention, the memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiment of the present invention may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory of the system and method described herein is intended to include but is not limited to these and any other suitable types of memory.

[0222] Finally, it should be noted that the terms used in the embodiments of the present invention and the appended claims are for the purpose of describing particular embodiments only and are not intended to be limiting of the embodiments of the present invention.

[0223] For example, as used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0224] As another example, the phrase "when..." as used herein may be interpreted as "if" or "if" or "when..." or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0225] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present invention.

[0226] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0227] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0228] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present invention.

[0229] In addition, each functional unit in the embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0230] If implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory, random access memory, disk or optical disk and other media that can store program codes.

[0231] The above contents are only specific implementations of the embodiments of the present invention, but the protection scope of the embodiments of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the embodiments of the present invention, which should be included in the protection scope of the embodiments of the present invention. Therefore, the protection scope of the embodiments of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for switching a network, characterized in that: include: The network device acquires channel quality status information, where the channel quality status information is used to reflect the channel quality of the second network; When the network device determines that the first service is terminated or the service network of the terminal device does not support the first service, determining whether to switch the service network from the first network to the second network according to the channel quality status information, The channel quality status information is a measurement result report sent by the terminal device. Before the network device receives the measurement result report sent by the terminal device, the method further includes: the network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device, The network device sending the first indication information to the terminal device includes: the network device sending a release command to the terminal device, the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

2. The method according to claim 1, characterized in that The network device receives the measurement result report sent by the terminal device, including: The network device obtains a response message of the release command sent by the terminal device, where the response message includes the measurement result report.

3. The method according to claim 1 or 2, characterized in that: The network device receives the measurement result report sent by the terminal device, including: The network device periodically receives the measurement result report sent by the terminal device.

4. The method according to any one of claims 1 to 3, characterized in that The network device receives the measurement result report sent by the terminal device, including: The network device receives the measurement result report sent by the terminal device within a specific time unit.

5. The method according to claim 4, characterized in that The terminal device sends the measurement result report a fixed number of times.

6. The method according to any one of claims 1 to 5, characterized in that Before the network device receives the measurement result report sent by the terminal device, the method further includes: The network device sends configuration information to the terminal device, where the configuration information includes at least one of the following information: The sending cycle, number of times and specific time unit of the measurement result report; The network device receiving the measurement result report sent by the terminal device includes: The network device receives the measurement result report according to the indication information.

7. The method according to claim 1, characterized in that The network device sends first indication information to the terminal device, including: The network device sends radio resource control RRC signaling to the terminal device, and the RRC signaling includes the first indication information.

8. The method according to claim 1, characterized in that The network device sends first indication information to the terminal device, including: The network device sends or receives data on the first bearer, and instructs the terminal device to send a measurement result report to the network device through the first bearer; or, The network device sends or receives a first quality of service QoS flow or a first data flow, and instructs the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

9. The method according to claim 1, characterized in that: The channel quality status information is second indication information sent by the terminal device, where the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; When the network device determines that the first service ends or the service network does not support the first service, determining whether to switch the service network of the terminal device from the first network to the second network according to the channel quality status information includes: When the network device determines that the first service is terminated or the service network does not support the first service, the network device determines whether to switch the service network of the terminal device from the first network to the second network according to the second indication information.

10. The method according to claim 1, characterized in that The network device obtains channel quality status information, including: The network device obtains the channel quality status information from candidate networks, where the candidate networks include the second network.

11. The method according to claim 10, characterized in that The candidate network may obtain the channel quality status information through an uplink signal of a terminal device.

12. The method according to claim 10, characterized in that The candidate network is a network that has a direct or indirect interface with the network where the network device is located.

13. The method according to any one of claims 1 to 12, characterized in that The channel quality status information includes channel quality status information of candidate networks.

14. The method according to any one of claims 1 to 13, characterized in that The first service is any one of the following: Services on the second bearer, a second data flow and a second quality of service QoS flow.

15. A method for switching networks, characterized in that: include: The terminal device determines channel quality status information, where the channel quality status information is used to reflect the channel quality of the second network; The terminal device sends the channel quality status information to the network device, so that when the network device determines that the first service is ended or the service network of the terminal device does not support the first service, the network device determines whether to switch the service network from the first network to the second network according to the channel quality status information, The channel quality status information is a measurement result report of the terminal device; wherein the terminal device sends the channel quality status information to the network device, including: the terminal device sends the measurement result report to the network device, Before the terminal device sends the measurement result report to the network device, the method further includes: the terminal device receives first indication information sent by the network device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device, Among them, the terminal device receives the first indication information sent by the network device, including: the terminal device receives a release command sent by the network device, the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

16. The method according to claim 15, characterized in that The terminal device sending the measurement result report to the network device includes: The terminal device sends a response message of the release command to the network device, and the response message includes the measurement result report.

17. The method according to claim 15 or 16, characterized in that The terminal device sending the measurement result report to the network device includes: The terminal device periodically sends the measurement result report to the network device.

18. The method according to any one of claims 15 to 17, characterized in that The terminal device sending the measurement result report to the network device includes: The terminal device sends the measurement result report to the network device within a specific time unit.

19. The method according to claim 18, characterized in that The terminal device sends the measurement result report a fixed number of times.

20. The method according to any one of claims 15 to 19, characterized in that Before the terminal device sends the measurement result report to the network device, the method further includes: The terminal device receives configuration information sent by the network device, where the configuration information includes at least one of the following information: The sending cycle, number of times and specific time unit of the measurement result report; The terminal device sending the measurement result report to the network device includes: The terminal device sends the measurement result report to the network device according to the indication information.

21. The method according to claim 15, characterized in that The terminal device receives the first indication information sent by the network device, including: The terminal device receives radio resource control RRC signaling sent by the network device, and the RRC signaling includes the first indication information.

22. The method according to claim 15, characterized in that The terminal device receives the first indication information sent by the network device, including: The terminal device receives or sends data on the first bearer, and instructs the terminal device to send the measurement result report to the network device through the first bearer; or, The terminal device receives or sends a first quality of service QoS flow or a first data flow, and instructs the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

23. The method according to claim 15, characterized in that The terminal device determines the channel quality status information, including: The terminal device generates second indication information, where the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; The terminal device sending the channel quality status information to the network device includes: The terminal device sends the second indication information to the network device.

24. The method according to claim 23, characterized in that The terminal device generates second indication information, including: The indication information is generated when the channel quality status information of the second network is greater than or equal to a first threshold; or the indication information is generated when the status packet error rate of the second network is less than or equal to a second threshold.

25. The method according to claim 15, characterized in that The terminal device determines the channel quality status information, including: The network device obtains the channel quality status information from candidate networks, where the candidate networks include the second network.

26. The method according to claim 25, characterized in that The candidate network may obtain the channel quality status information through an uplink signal of a terminal device.

27. The method according to claim 25, characterized in that The candidate network is a network that has a direct or indirect interface with the network where the network device is located.

28. The method according to any one of claims 15 to 27, characterized in that The channel quality status information includes channel quality status information of candidate networks.

29. The method according to any one of claims 15 to 28, characterized in that The first service is any one of the following: Services on the second bearer, a second data flow and a second quality of service QoS flow.

30. A network device, characterized in that: include: a transceiver unit, configured to obtain channel quality status information, wherein the channel quality status information is used to reflect the channel quality of the second network; a processing unit, configured to determine whether to switch the service network from the first network to the second network according to the channel quality status information when it is determined that the first service is terminated or the service network of the terminal device does not support the first service, The channel quality status information is a measurement result report sent by the terminal device. The transceiver unit is further used for: before receiving the measurement result report sent by the terminal device, the network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device. The transceiver unit is specifically used to: send a release command to the terminal device, the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

31. The network device according to claim 30, characterized in that: The transceiver unit is specifically used for: Obtain a response message of the release command sent by the terminal device, where the response message includes the measurement result report.

32. The network device according to claim 30 or 31, characterized in that: The transceiver unit is more specifically used for: Periodically receive the measurement result report sent by the terminal device.

33. The network device according to any one of claims 30 to 32, characterized in that: The transceiver unit is more specifically used for: The measurement result report sent by the terminal device is received within a specific time unit.

34. The network device according to claim 33, characterized in that: The terminal device sends the measurement result report a fixed number of times.

35. The network device according to any one of claims 30 to 34, characterized in that: The transceiver unit is more specifically used for: Before receiving the measurement result report sent by the terminal device, send configuration information to the terminal device, where the configuration information includes at least one of the following information: The sending cycle, number of times and specific time unit of the measurement result report; The measurement result report is received according to the indication information.

36. The network device according to claim 30, characterized in that The transceiver unit is specifically used for: Sending radio resource control RRC signaling to the terminal device, wherein the RRC signaling includes the first indication information.

37. The network device according to claim 30, characterized in that: The transceiver unit is specifically used for: Send or receive data on a first bearer, and instruct the terminal device to send a measurement result report to the network device through the first bearer; or, Send or receive a first quality of service QoS flow or a first data flow, and instruct the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

38. The network device according to claim 30, characterized in that: The channel quality status information is second indication information sent by the terminal device, where the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; Wherein, the processing unit is specifically used for: When it is determined that the first service is terminated or the service network does not support the first service, it is determined whether to switch the service network of the terminal device from the first network to the second network according to the second indication information.

39. The network device according to claim 30, characterized in that: The transceiver unit is specifically used for: The channel quality status information is acquired from candidate networks, where the candidate networks include the second network.

40. The network device according to claim 39, characterized in that: The candidate network may obtain the channel quality status information through an uplink signal of a terminal device.

41. The network device according to claim 39, characterized in that: The candidate network is a network that has a direct or indirect interface with the network where the network device is located.

42. The network device according to any one of claims 30 to 41, characterized in that: The channel quality status information includes channel quality status information of candidate networks.

43. The network device according to any one of claims 30 to 42, characterized in that: The first service is any one of the following: Services on the second bearer, a second data flow and a second quality of service QoS flow.

44. A terminal device, characterized in that: include: a processing unit, configured to determine channel quality status information, wherein the channel quality status information is used to reflect the channel quality of the second network; a transceiver unit, configured to send the channel quality status information to the network device, so that when the network device determines that the first service is terminated or the service network of the terminal device does not support the first service, the network device determines whether to switch the service network from the first network to the second network according to the channel quality status information, The channel quality status information is a measurement result report of the terminal device, and the transceiver unit is specifically used to: send the measurement result report to the network device, The transceiver unit is further used to: before sending the measurement result report to the network device, receive first indication information sent by the network device, where the first indication information is used to instruct the terminal device to send the measurement result report to the network device. The transceiver unit is specifically used to: receive a release command sent by the network device, the release command is used to instruct the terminal device to release the first service, and the release command includes the first indication information.

45. The terminal device according to claim 44, characterized in that: The transceiver unit is more specifically used for: A response message of the release command is sent to the network device, where the response message includes the measurement result report.

46. ​​The terminal device according to claim 44 or 45, characterized in that: The transceiver unit is more specifically used for: The measurement result report is periodically sent to the network device.

47. The terminal device according to any one of claims 44 to 46, characterized in that: The transceiver unit is more specifically used for: The measurement result report is sent to the network device within a specific time unit.

48. The terminal device according to claim 47, characterized in that: The terminal device sends the measurement result report a fixed number of times.

49. The terminal device according to any one of claims 44 to 48, characterized in that: The transceiver unit is more specifically used for: Before sending the measurement result report to the network device, receive configuration information sent by the network device, where the configuration information includes at least one of the following information: The sending cycle, number of times and specific time unit of the measurement result report; Send the measurement result report to the network device according to the indication information.

50. The terminal device according to claim 44, characterized in that: The transceiver unit is specifically used for: Receive radio resource control RRC signaling sent by the network device, where the RRC signaling includes the first indication information.

51. The terminal device according to claim 44, characterized in that: The transceiver unit is specifically used for: receiving or sending data on a first bearer, and instructing the terminal device to send the measurement result report to the network device through the first bearer; or, Receive or send a first quality of service QoS flow or a first data flow, and instruct the terminal device to send the measurement result report to the network device through the first QoS flow or the first data flow.

52. The terminal device according to claim 44, characterized in that: The processing unit is specifically used for: generating second indication information, where the second indication information is used to indicate that the second network is available, or the second indication information is used to indicate that the second network is unavailable; The transceiver unit is specifically used for: Send the second indication information to the network device.

53. The terminal device according to claim 52, characterized in that: The processing unit is more specifically configured to: The indication information is generated when the channel quality status information of the second network is greater than or equal to a first threshold; or the indication information is generated when the status packet error rate of the second network is less than or equal to a second threshold.

54. The terminal device according to claim 44, characterized in that: The processing unit is specifically used for: The channel quality status information is acquired from candidate networks, where the candidate networks include the second network.

55. The terminal device according to claim 54, characterized in that: The candidate network may obtain the channel quality status information through an uplink signal of a terminal device.

56. The terminal device according to claim 55, characterized in that: The candidate network is a network that has a direct or indirect interface with the network where the network device is located.

57. The terminal device according to any one of claims 44 to 56, characterized in that: The channel quality status information includes channel quality status information of candidate networks.

58. The terminal device according to any one of claims 44 to 57, characterized in that: The first service is any one of the following: Services on the second bearer, a second data flow and a second quality of service QoS flow.

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