Communication method and related equipment

Abstract

The invention discloses a communication method and related equipment. In the method, aiming at the scene that the first cell set comprises the first cell, the terminal equipment can try to access the second system network according to the de-enabling reason, the terminal equipment can actively recover the second system capability and try to access the second system network, so that the terminal equipment which cannot complete the service can complete the service.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and related equipment. Background Art

[0002] The service solutions of the fifth generation mobile communication technology (5G) are designed to continue the service methods of the fourth generation mobile communication technology (4G) network. The services corresponding to the 4G network can be realized through the 5G network. For example, taking voice services as an example, continuing the voice bearer (Voice over Long-Term Evolution, VoLTE) method of the 4G network, high-quality voice calls (Voice over New Radio, VoNR) services can be provided on the 5G network through the 5G network and the IP Multimedia Subsystem (IMS). In this way, when a terminal device residing on the 5G network cannot complete the service, the terminal device can move to the 4G network to complete the service. Therefore, how to improve the success rate of terminal devices in achieving services when moving between different network standards (including switching or redirection) is a problem to be solved. Summary of the Invention

[0003] The embodiments of the present application provide a communication method and related equipment, which can improve the success rate of services when a terminal device switches or redirects between networks of different standards.

[0004] In a first aspect, a communication method is provided, the method comprising: if switching or redirecting from a first-standard network to a first cell set of a second-standard network, determining whether the first cell set includes a first cell, the first cell being a cell to which access is restricted due to disabling of the second-standard capability by a terminal device; if the first cell set includes the first cell, attempting to access the second-standard network based on a disabling reason, the disabling reason being used to describe the degree of relevance between the disabling of the second-standard capability by the terminal device and the terminal device itself.

[0005] In this aspect, for the scenario where the first cell set includes the first cell, the terminal device can attempt to access the second-standard network based on the deactivation reason. Compared with the solution of not accessing the second-standard network, the embodiment of the present application can still attempt to access the second-standard network in the scenario where the first cell set includes the first cell, which is conducive to enabling terminal devices that cannot complete the service to complete the service, effectively improving the service success rate of the terminal device when switching or redirecting between different-standard networks, thereby effectively improving the service experience.

[0006] Optionally, the method in this aspect may be executed by a terminal device.

[0007] The number of cells in the first cell set is one or more, and these one or more cells are the target cells when the terminal device is switched or redirected. For example, when the terminal device performs a switch, the number of target cells may be one, that is, the number of cells in the first cell set is one; when the terminal device performs a redirection, the number of target cells is multiple, that is, the number of cells in the first cell set is multiple. It can be understood that when the terminal device switches or redirects from a first-standard network to a second-standard network, each cell in the first cell set is a cell of the second-standard network.

[0008] Optionally, one or more cells in the first cell set may be identified by one or more cell identifiers (CellIDs), or may be identified by at least one of a PLMN identifier, a frequency band identifier, or a frequency point identifier. For example, all cells corresponding to the PLMN identified as 46000 may constitute one or more cells in the first cell set; for another example, all cells corresponding to the frequency band identified as band3 may constitute one or more cells in the first cell set; for another example, all cells corresponding to the frequency point identified as 1275 may constitute one or more cells in the first cell set; for another example, all cells corresponding to the frequency band identified as band3 under the PLMN identified as 46000 may constitute one or more cells in the first cell set; for another example, all cells corresponding to the frequency point identified as 1275 under the PLMN identified as 46000 and the frequency band identified as band3 may constitute one or more cells in the first cell set; and so on. In other words, the first cell set may be associated with at least one of a PLMN, a frequency band, or a frequency point.

[0009] In an optional embodiment, the number of cells in the first cell set is multiple, and the terminal device attempts to access the second-standard network based on the disabling reason, including: if the degree of correlation between the terminal device's disabling of the second-standard capability and the terminal device itself is the first level, re-enabling the second-standard capability and attempting to access each cell in the first cell set. It can be seen that in this embodiment, the terminal device can actively restore the second-standard capability and actively attempt to access the first cell set of the second-standard network, that is, the terminal device can attempt to communicate with the second-standard network to cancel the suppression of the second-standard capability of the terminal device accessing the first cell set.

[0010] In another optional implementation, the number of cells in the first cell concentration is one, and attempting to access the second-standard network based on the disabling reason includes: if the degree of correlation between the terminal device's disabling of the second-standard capability and the terminal device itself is the first level, re-enabling the second-standard capability and attempting to access the first cell. It can be seen that in this implementation, the terminal device can actively restore the second-standard capability and actively attempt to access the first cell of the second-standard network, that is, the terminal device can attempt to communicate with the second-standard network to cancel the suppression of the second-standard capability of the terminal device accessing the first cell.

[0011] Optionally, the terminal device attempting to access the first cell may include the terminal device sending a registration request message to the core network device through the access network device corresponding to the first cell. It should be noted that if the first cell is a cell under the LTE standard network, the terminal device sends the registration request message to the LTE standard core network device through the LTE standard access network device.

[0012] In another optional embodiment, after attempting to access the first cell, the method further includes: if access to the first cell fails, attempting to access other cells in the second cell set other than the first cell. In this embodiment, the terminal device can attempt to access not only the first cell but also other cells in the second cell set corresponding to the first cell, which can effectively improve the service success rate and thus effectively enhance the service experience.

[0013] Optionally, the second cell set includes the first cell, and the number of cells in the second cell set is multiple; that is, in this case, the first cell set only includes the first cell, the second cell set includes the first cell and other cells, and the second cell set is different from the first cell set.

[0014] Optionally, the failure of the terminal device to access the first cell may include a registration failure of the terminal device. Specifically, it may include but is not limited to any of the following: for example, if the terminal device does not receive a registration response message from the access network device corresponding to the first cell (within a preset time period), the terminal device registration fails; for another example, if the terminal device receives a registration response message indicating a registration failure from the access network device corresponding to the first cell, the terminal device registration fails, and so on. Furthermore, in order to improve the service success rate, the terminal device may attempt to access the first cell multiple times. The terminal device determines that the access to the first cell has failed when the number of consecutive or cumulative failures to access the first cell reaches m times, where m is a positive integer.

[0015] In another optional implementation, the method further includes: if the degree of correlation between the terminal device disabling the second-standard capability and the terminal device itself is at the second level, attempting to access a third-standard network, where the third-standard network is different from the first-standard network and the second-standard network. For the scenario where the degree of correlation between the terminal device disabling the second-standard capability and the terminal device itself is at the second level, the terminal device may not be able to access the second-standard network. The terminal device may directly attempt to access the third-standard network, which is beneficial for the terminal device that cannot access the second-standard network to complete services on the third-standard network. At the same time, compared with the solution in which the terminal device attempts to access the third-standard network after failing to access the second-standard network, this implementation method can shorten the access time and improve efficiency.

[0016] Furthermore, the terminal device can perform differentiated processing for scenarios with a first level of relevance and scenarios with a second level of relevance, that is, when the relevance is at the first level, the terminal device attempts to access the second-standard network, and when the relevance is at the second level, the terminal device attempts to access the third-standard network. The terminal device independently adopts different solutions to optimize the access method, which can effectively improve the service success rate of the terminal device when switching or redirecting between different-standard networks, thereby effectively improving the service experience.

[0017] In another optional embodiment, the method further includes: receiving a measurement request message; responding to the measurement request message and determining a measurement report to be reported based on the deactivation reason; and using the measurement report to determine the first cell set. It can be seen that in this embodiment, the terminal device can report the measurement report.

[0018] In another optional implementation, if the degree of relevance between the terminal device's disabling of the second standard capability and the terminal device itself is at the second level, the measurement report to be reported does not include the measurement report of the first cell. It can be seen that in this implementation, the terminal device does not report the measurement report of the first cell, which is conducive to preventing the access network device from using the first cell restricted from access by the terminal device as the target cell during switching or redirection. The terminal device can suppress it from the source, so that the first cell set does not include the first cell, which is conducive to the terminal device completing the service normally in each cell of the first cell set.

[0019] In another optional implementation, if the degree of correlation between the terminal device's disabling of the second standard capability and the terminal device itself is at the second level, the measurement report to be reported does not include the measurement reports of each cell in the second cell set. It can be seen that in this implementation, the terminal device does not report the measurement reports of each cell in the second cell set, which is conducive to preventing the access network device from using the first cell restricted to the terminal device and other cells in the second cell set as target cells during switching or redirection. The terminal device can suppress each cell in the second cell set from being the target cell during switching or redirection from the source, thereby facilitating the terminal device to complete services normally in each cell in the first cell set.

[0020] In another optional embodiment, after determining whether the first cell set includes the first cell, the method further includes: if the first cell set does not include the first cell, determining whether the success rate of the terminal device in executing services in each cell in the first cell set is lower than a threshold; if it is lower than the threshold, attempting to access a second cell, where the second cell is a cell where the terminal device has a success rate in executing services higher than or equal to the threshold. It can be seen that in this embodiment, the terminal device can preferentially attempt to execute services in cells where the success rate is higher than or equal to the threshold, which can effectively improve the service success rate of the terminal device when switching or redirecting between networks of different standards, thereby effectively improving the service experience.

[0021] In another optional embodiment, whether the success rate of a terminal device executing a service in a cell is below a threshold is determined based on the signal strength of the cell. For example, if the signal strength of a cell is below a preset signal strength, the cell is a cell where the success rate of a terminal device executing a service is below the threshold. If the signal strength of a cell is greater than or equal to the preset signal strength, the cell is a cell where the success rate of a terminal device executing a service is greater than or equal to the threshold.

[0022] In another optional embodiment, whether the success rate of a terminal device executing a service in a cell is below a threshold is determined based on historical information about the terminal device executing services in the cell. For example, if the terminal device has historically failed to execute a service in a cell, the cell is a cell where the success rate of the terminal device executing services is below the threshold. If the terminal device has historically successfully executed services in a cell, the cell is a cell where the success rate of the terminal device executing services is greater than or equal to the threshold.

[0023] In another optional implementation, the method further includes: receiving an indication message, the indication message including indication information, and the indication information is used to instruct the terminal device to switch or redirect from the first-standard network to the first cell set of the second-standard network.

[0024] In a second aspect, a communication method is provided, comprising: sending a measurement request message, receiving a reported measurement report, and determining a first cell set based on the measurement report. It can be seen that in this aspect, the access network device can determine the first cell set based on the measurement report reported by the terminal device.

[0025] Optionally, the method in this aspect may be executed by an access network device of the first standard.

[0026] In an optional implementation, the method further includes: sending an indication message, where the indication message includes indication information, where the indication information is used to instruct the terminal device to switch or redirect from the first-standard network to the first cell set of the second-standard network.

[0027] In a third aspect, a communication device is provided that can implement the communication method described in the first aspect. For example, the communication device can be a terminal device or a chip within the terminal device. The method can be implemented using software, hardware, or hardware executing corresponding software.

[0028] In one possible implementation, the device includes: a transceiver unit and a processing unit; wherein, if switching or redirecting from a first-standard network to a first cell set of a second-standard network, the processing unit is used to determine whether the first cell set includes a first cell, and the first cell is a cell to which access is restricted due to disabling of the second-standard capability by the communication device; if the first cell set includes the first cell, the transceiver unit is used to attempt to access the second-standard network based on the disabling reason, and the disabling reason is used to describe the degree of correlation between the disabling of the second-standard capability by the communication device and the communication device itself.

[0029] Optionally, there are multiple cells in the first cell set, and the transceiver unit is used to attempt to access the second-standard network based on the disabling reason, including: if the degree of correlation between the communication device's disabling of the second-standard capability and the communication device itself is the first level, the transceiver unit re-enables the second-standard capability and attempts to access each cell in the first cell set.

[0030] Optionally, the number of cells in the first cell concentration is one, and the transceiver unit attempts to access the second-standard network based on the disabling reason, including: if the degree of correlation between the communication device disabling the second-standard capability and the communication device itself is the first level, re-enabling the second-standard capability and attempting to access the first cell.

[0031] Optionally, after the transceiver unit attempts to access the first cell, the transceiver unit is further used to: if access to the first cell fails, attempt to access other cells in the second cell set except the first cell; the second cell set includes the first cell, and the number of cells in the second cell set is multiple.

[0032] Optionally, the transceiver unit is further configured to: if the degree of correlation between the communication device disabling the second-standard capability and the communication device itself is at a second level, attempt to access a third-standard network, which is different from the first-standard network and the second-standard network.

[0033] Optionally, the communication device further includes: a transceiver unit for receiving a measurement request message; in response to the measurement request message, the processing unit is used to determine a measurement report to be reported according to the disabling reason; and the measurement report is used to determine the first cell set.

[0034] Optionally, if the degree of correlation between the communication device disabling the second standard capability and the communication device itself is at the second level, the measurement report to be reported does not include the measurement report of the first cell.

[0035] Optionally, if the degree of correlation between the communication device disabling the second standard capability and the communication device itself is at the second level, the measurement report to be reported does not include measurement reports of each cell in the second cell set.

[0036] Optionally, after the processing unit is used to determine whether the first cell set includes the first cell, the communication device further includes: if the first cell set does not include the first cell, the processing unit is used to determine whether the success rate of the communication device in performing services in each cell in the first cell set is lower than a threshold; if it is lower than the threshold, the transceiver unit is used to attempt to access a second cell, and the second cell is a cell where the success rate of the communication device in performing services is higher than or equal to the threshold.

[0037] Optionally, whether the success rate of the terminal device performing services in a cell is lower than a threshold is determined based on the signal strength of the cell.

[0038] Optionally, whether the success rate of the terminal device in performing services in a cell is lower than a threshold is determined based on historical information of the terminal device in performing services in the cell.

[0039] Optionally, the transceiver unit is further used to: receive an indication message, where the indication message includes indication information, and the indication information is used to instruct the communication device to switch or redirect from the first-standard network to the first cell set of the second-standard network.

[0040] In a fourth aspect, a communication device is provided that can implement the communication method described in the second aspect. For example, the communication device can be an access network device or a chip within the access network device. The method can be implemented using software, hardware, or hardware executing corresponding software.

[0041] In a possible implementation, the apparatus includes: a transceiver unit and a processing unit; wherein the transceiver unit is configured to send a measurement request message and receive a reported measurement report; and the processing unit is configured to determine the first cell set based on the measurement report.

[0042] Optionally, the transceiver unit is further used to: send an indication message, where the indication message includes indication information, and the indication information is used to instruct the terminal device to switch or redirect from the first-standard network to the first cell set of the second-standard network.

[0043] In combination with the third aspect, the fourth aspect, or any one of the third and fourth aspects, in another possible implementation, the communication device in the third aspect, the fourth aspect, or any one of the third and fourth aspects includes a processor coupled to a memory; the processor is configured to support the device in performing the corresponding functions in the above-mentioned communication method. The memory is used to couple with the processor, which stores the necessary programs (instructions) and / or data for the device. Optionally, the communication device may further include a communication interface for supporting communication between the device and other network elements. Optionally, the memory may be located inside the communication device or outside the communication device.

[0044] In combination with the third aspect, the fourth aspect, or any one of the third and fourth aspects, in another possible implementation, the communication device in the third aspect, the fourth aspect, or any one of the third and fourth aspects includes a processor and a transceiver device, the processor being coupled to the transceiver device, the processor being used to execute a computer program or instruction to control the transceiver device to receive and send information; when the processor executes the computer program or instruction, the processor is further used to implement the above method through a logic circuit or execution code instruction. The transceiver device may be a transceiver, a transceiver circuit, or an input / output interface, configured to receive signals from devices other than the communication device and transmit them to the processor, or to send signals from the processor to devices other than the communication device. When the communication device is a chip, the transceiver device is a transceiver circuit or an input / output interface.

[0045] When the communication device in the third aspect, the fourth aspect, or any of the third and fourth aspects is a chip or chip module, the sending unit may be an output unit, such as an output circuit or a communication interface; and the receiving unit may be an input unit, such as an input circuit or a communication interface. When the communication device is a terminal or access network equipment, the sending unit may be a transmitter or a transmitter; and the receiving unit may be a receiver or a receiver.

[0046] In a fifth aspect, a communication system is provided that can implement the communication method of the first aspect, the second aspect, or any one of the first and second aspects. The communication system includes a terminal device, an access network device of a first standard, and an access network device of a second standard:

[0047] The access network device of the first standard sends an indication message to the terminal device, where the indication message includes indication information, where the indication information is used to instruct the terminal device to switch or redirect from the first standard network to the first cell set of the second standard network;

[0048] The terminal device determines whether the first cell set includes the first cell, where the first cell is a cell to which the terminal device has restricted access due to disabling the second standard capability;

[0049] If the first cell set includes the first cell, the terminal device attempts to access the access network device of the second standard according to the disabling reason, and the disabling reason is used to describe the relevance of the terminal device's disabling of the second standard capability to the terminal device itself.

[0050] In a sixth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When a computer executes the computer program or instruction, the methods described in the above aspects are implemented.

[0051] In a seventh aspect, a computer program product comprising instructions is provided, which, when executed on a communication device, causes the communication device to execute the methods described in the above aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0053] Figure 1 This is a schematic diagram of the structure of a communication system provided by an embodiment of the present application;

[0054] Figure 2 This is a schematic diagram of a process for triggering switching or redirection provided by an embodiment of the present application;

[0055] Figure 3 This is a flow chart of a communication method provided in an embodiment of the present application;

[0056] Figure 4 This is a flow chart of another communication method provided in an embodiment of the present application;

[0057] Figure 5 This is a flow chart of another communication method provided in an embodiment of the present application;

[0058] Figure 6 This is a flow chart of another communication method provided in an embodiment of the present application;

[0059] Figure 7 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0060] Figure 8 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] In order to make the objectives, technical solutions and advantages disclosed in this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0062] The following at least one (item) involved in this application indicates one (item) or more (items). More than one (item) refers to two (items) or more than two (items). "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. In addition, it should be understood that although the terms first, second, etc. may be used to describe each object in this application, these objects should not be limited to these terms. These terms are only used to distinguish each object from each other.

[0063] The terms "including" and "having" and any variations thereof mentioned in the description of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. It should be noted that, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any method or design described in this application as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other methods or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0064] The following specific embodiments illustrate the implementation of the present application. Those skilled in the art can understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to increase the in-depth understanding of the present application, the following description will contain many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other unless there is a conflict.

[0065] Hereinafter, if used, the terms "first," "second," etc., are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature qualified as "first," "second," etc. may explicitly or implicitly include one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more.

[0066] It should be pointed out that the "equal to" involved in the embodiments of the present application can be used in conjunction with "higher than", and is applicable to the technical solution adopted when it is higher than, and can also be used in conjunction with "lower than", and is applicable to the technical solution adopted when it is lower than. It should be noted that when "equal to" is used in conjunction with "higher than", it cannot be used in conjunction with "lower than"; when "equal to" is used in conjunction with "lower than", it cannot be used in conjunction with "higher than".

[0067] It should be noted that in the embodiments of the present application, the terms "disable", "suppress" and "restrict" may be used interchangeably, and the terms "re-enable" and "restore" may be used interchangeably, and those skilled in the art may understand their meanings.

[0068] The communication systems involved in the embodiments of the present application include but are not limited to the Global System for Mobile communications (GSM) system, the General Packet Radio Service (GPRS) system, the Code Division Multiple Access (CDMA) system, the Wideband Code Division Multiple Access (W-CDMA) system, the Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system, the Long Term Evolution (LTE) system, the LTE Frequency Division Duplex (FDD) system, the LTE Time Division Duplex (TDD) system, the Worldwide Interoperability for Microwave Access (WiMAX) communication system, the New Radio (NR) system, the fifth generation (5G) mobile communication system and subsequent evolved communication systems, such as the sixth generation (6G) mobile communication technology system and the seventh generation (7G) mobile communication technology system, etc., and the present application does not limit this.

[0069] The communication system involved in the embodiments of the present application may include terminal equipment and network equipment.

[0070] Optionally, the terminal device is a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.). The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. The embodiments of the present application do not limit the application scenarios. The terminal device may sometimes also be referred to as user equipment (UE), a mobile station, a remote station, etc. The embodiments of the present application do not limit the specific technology, device form, and name adopted by the terminal device.

[0071] Optionally, network equipment may include access network (RAN) equipment and core network equipment. Access network equipment is primarily responsible for radio resource management, quality of service (QoS) management, data compression, and encryption on the air interface side. Access network equipment can include various types of base stations, such as macro base stations, micro base stations (also known as small cells), relay stations, and access points. The names of devices with base station functions may vary across different communication systems. For example, in NR systems, they are called gNBs; in LTE systems, they are called evolved node Bs (eNBs or eNodeBs); and in 3G systems, they are called node Bs. Core network equipment provides user connections, manages users, and carries services. For example, establishing user connections includes functions such as mobility management (MM) and paging. User management includes user description, QoS, and security (security measures provided by the authentication center include security management of mobile services and security processing for external network access). Bearer connections include connections to external networks such as the public switched telephone network (PSTN), external circuit data networks and packet data networks, and the Internet. For example, core network equipment may include an access and mobility management function (AMF) network element, which is primarily responsible for signaling processing, namely control plane functions, including access control, mobility management, attach and detach functions, etc. Optionally, core network equipment may also include a session management function (SMF) network element, which is responsible for session management functions such as session establishment, modification, and release. Optionally, core network equipment may also include a user plane function (UPF) network element, which is responsible for forwarding and receiving user data in terminal devices. User data can be received from the data network and transmitted to the terminal device via the access network equipment. The UPF network element can also receive user data from the terminal device via the access network equipment and forward it to the data network. The transmission resources and scheduling functions provided by the UPF network element to the terminal device are managed and controlled by the SMF network element. The core network equipment involved in the embodiments of this application is not limited to AMF network elements, SMF network elements, and UPF network elements.

[0072] Optionally, the communication system gradually develops from a low network standard to a high network standard according to different development stages. The network standard may refer to the type of network equipment or the type of communication system. For example, the network standard may include but is not limited to: GSM standard, GPRS standard, CDMA standard, WCDMA standard, TD-SCDMA standard, LTE standard or NR standard, etc. With the development of communication systems, the number of network standards is also increasing, and more network standards may also be included in this application.

[0073] In a communication system, the network device can only provide services to the terminal device after it has executed the access process. The access process may include but is not limited to cell search and cell selection, random access and attachment (ATTACH). In the cell search and cell selection process, the terminal device is turned on and reads the public land mobile network (PLMN) information in the subscriber identity module (SIM) card information, and performs cell searches based on the PLMN information. During the cell search process, the terminal device reads the Master Information Block (MIB) message and completes downlink synchronization. Then, the terminal device reads the System Information Block (SIB) message and completes cell residency. In the random access process, the terminal device and the network device can complete uplink synchronization and establish an initial connection. In the attachment process, the terminal device can report its own capabilities and complete the authentication request and security establishment.

[0074] During the cell search and cell selection process, the terminal device can select networks of different standards, that is, the terminal device can access access network devices and core network devices of different standards to establish corresponding service connections. Taking NR standard and LTE standard as an example, Figure 1 FIG. 1 shows a schematic diagram of the structure of a communication system. Figure 1As shown, the communication system may include a terminal device 101, an NR access network device 102, an NR core network device 103, an LTE access network device 104, and an LTE core network device 105. Optionally, the terminal device 101 may establish a communication connection with the NR access network device 102. Upon establishing the connection, the terminal device 101 may initiate an attach process to the NR core network device 103 through the NR access network device 102 to establish a service connection with the NR core network device 103. Optionally, the terminal device 101 may also establish a communication connection with the LTE access network device 104. Upon establishing the connection, the terminal device 101 may initiate an attach process to the LTE core network device 105 through the LTE access network device 104 to establish a service connection with the LTE core network device 105.

[0075] In some implementations, due to various reasons such as network coverage, capacity, or policy, the terminal device residing in the first standard network may not be able to complete the service, and the terminal device may switch from the first standard network or redirect to the second standard network to complete the service. For example, taking the example of terminal device 101 switching from the NR standard network or redirecting to the LTE standard network to complete the voice service, when the NR standard network coverage is not good enough, the terminal device residing in the NR standard network may be unable to complete the voice service through the VoNR connection. In this case, the access network device in the NR standard network may initiate an Evolved Packet System Fallback (EPS FB) process to the terminal device, so that the terminal device switches or redirects to the LTE standard network, so that the terminal device completes the voice service by establishing a VoLTE connection between the access network device of the LTE standard network and the core network device of the LTE standard network. However, the success rate of the terminal device switching or redirecting between different standard networks to achieve the service is low. Based on this, the embodiment of the present application provides a communication method that can effectively improve the service success rate of the terminal device when switching or redirecting between different standard networks, thereby effectively improving the service experience.

[0076] To facilitate understanding of the embodiments disclosed in this application, the following three points are explained.

[0077] (1) The scenarios in the embodiments disclosed in this application are described by taking the switching of the NR standard network or redirection to the LTE standard network as an example. It should be noted that the solutions in the embodiments disclosed in this application are also applicable when performing switching or redirection between other standard networks, and the corresponding names can also be replaced by the names of corresponding functions in other standard networks. For example, the embodiments of this application can be applicable to the scenario of switching or redirecting the 6G standard network to the NR standard network. For another example, the embodiments of this application can be applicable to the scenario of switching or redirecting the LTE standard network to the NR standard network, and so on. It should be noted that when the terminal device switches or redirects from a high-standard network to a low-standard network, the switching process or redirection process can be a fallback process, such as an EPS FB process.

[0078] (2) The scenarios in the embodiments disclosed in this application are described by taking the switching or redirection process of voice services as an example. It should be noted that the solutions in the embodiments disclosed in this application can also be applied to other services, such as emergency call services, commercial mobile alert services (CMAS), earthquake and tsunami warning systems (ETWS) services, etc. It should be noted that the specific service type executed by the terminal device can be determined by an air interface indication (for example, an indication message obtained from an access network device) or by autonomous identification by the terminal device, and this application does not limit this.

[0079] (3) The embodiments disclosed in this application are described using the switching or redirection process of voice services as an example. It should be noted that the embodiments may also be applicable to other mobility scenarios. For example, when a terminal device moves from indoors to outdoors, the switching or redirection process may also be triggered.

[0080] (4) The embodiments disclosed herein will present various aspects, embodiments, or features of the present invention in the context of systems including multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the accompanying figures. Furthermore, combinations of these aspects may also be used.

[0081] The terms and the like involved in this application are described below.

[0082] (1) Disabling scenario

[0083] Among them, the terminal device in the disabling scenario has disabled the second standard capability.

[0084] (2) Reason for disabling

[0085] Among them, the disabling reason is used to describe the degree of relevance between the terminal device's disabling of the second standard capability and the terminal device itself. Optionally, the disabling reason may include but is not limited to unknown International Mobile Subscriber Identity (IMSI) in the Home Subscriber Server (HSS), illegal terminal equipment, International Mobile Equipment Identity (IMEI) not accepted, illegal ME, Evolved Packet System (EPS) service not allowed, EPS service and non-EPS service not allowed, network equipment unable to derive terminal device identification, implicit separation, Public Land Mobile Network (PLMN) not allowed, tracking area not allowed, roaming not allowed in this tracking area, EPS service not allowed in this PLMN, no suitable cell in the tracking area, Mobile Switching Center (MSC) temporarily inaccessible, network failure, Circuit Switching (CS) domain unavailable, Ethernet Switching Module (ESM) failure, Media Access Control (MAC) failure, etc. Control, MAC) failure, synchronization failure, congestion, security capability mismatch of the terminal device, security mode rejected or unspecified, not authorized for this closed subscriber group (Closed Subscriber Group, CSG), non-EPS authentication is not accepted, redirection to 5G core network equipment is required, service option requested is not authorized in this PLMN, integrated access backhaul (IAB) node operation is not authorized, CS service is temporarily unavailable, EPS bearer context is not activated, serious network failure, PLMN is not allowed to operate at the current terminal device location, sending error message, invalid mandatory information, message type does not exist or is not implemented, message type is incompatible with protocol state, information element does not exist or is not implemented, conditional IE error, message is incompatible with protocol state, protocol error or unspecified. At least one or more of the following.

[0086] Optionally, the degree of correlation between the terminal device's disabling of the second-standard capability and the terminal device itself can be divided into multiple levels, and different levels correspond to different degrees of correlation. For example, it can include a first level and a second level, and the degree of correlation corresponding to the first level is lower than the degree of correlation corresponding to the second level. Exemplarily, if the disabling reason includes congestion, the degree of correlation between the terminal device's disabling of the second-standard capability described by the disabling reason and the terminal device itself is relatively low, which is the first level. If the disabling reason includes a mismatch in the terminal device's security capabilities, the degree of correlation between the terminal device's disabling of the second-standard capability described by the disabling reason and the terminal device itself is relatively high, which is the second level. It should be noted that the embodiment of the present application is explained using two levels as an example. In other embodiments, it can be further divided into more levels, such as the first level, the second level, and the third level, and the degrees of correlation corresponding to these three levels are from low to high: the first level, the second level, and the third level. For example, if the disabling reason includes congestion, the degree of relevance between the terminal device's disabling of the second-standard capability described by the disabling reason and the terminal device itself is low, which is the first level; if the disabling reason includes the PLMN not allowing operation at the current terminal device's location, the degree of relevance between the terminal device's disabling of the second-standard capability described by the disabling reason and the terminal device itself is medium, which is the second level; if the disabling reason includes the terminal device's security capability mismatch, the degree of relevance between the terminal device's disabling of the second-standard capability described by the disabling reason and the terminal device itself is high, which is the third level. In addition, each level can also be replaced by other names. For example, the first level can also be called "normal error" and the second level can be called "serious error"; for another example, the first level can also be called "normal error", the second level can be called "medium error", and the third level can be called "serious error"; and so on. It should be noted that if the disabling reason includes multiple types, the terminal device can also comprehensively determine the degree of relevance between the terminal device's disabling of the second-standard capability and the terminal device itself based on multiple types of disabling reasons. For example, the reasons for disabling include congestion and PLMN not allowing operation at the current location of the terminal device. The terminal device can determine the level of relevance of the terminal device's disabling of the second-standard capability to the terminal device itself based on these two reasons for disabling, which will not be elaborated.

[0087] Optionally, the disabling reason may be associated with at least one of the registration process, mobility update process or service request process of the terminal device. For example, taking the registration process of the terminal device associated with the disabling reason as an example, when the terminal device sends an attach request message (attach request) to the core network device through the access network device, the core network device may return an attach reject message (attach reject) to the terminal device through the access network device, and the attach reject message carries the disabling reason. For another example, taking the mobility update process of the terminal device associated with the disabling reason as an example, when the terminal device sends a tracking area update request message (tracking area update request) to the core network device through the access network device, the core network device may return a tracking area update reject message (tracking area update reject) to the terminal device through the access network device, and the tracking area update reject message carries the disabling reason. For another example, taking the service request process of the terminal device associated with the disabling reason as an example, when the terminal device sends a service request message (service request) to the core network device through the access network device, the core network device may return a service reject message (service reject) to the terminal device through the access network device, and the service reject message carries the disabling reason. It should be noted that, in a specific implementation, the terminal device may enter a disabling scenario when the number of consecutive or cumulative reception of rejection messages reaches n times, where n is a positive integer.

[0088] (3) First cell set

[0089] The number of cells in the first cell set is one or more, and these one or more cells are the target cells when the terminal device is switched or redirected. For example, when the terminal device performs a switch, the number of target cells is one, that is, the number of cells in the first cell set is one; when the terminal device performs a redirection, the number of target cells is multiple, that is, the number of cells in the first cell set is multiple. It can be understood that when the terminal device switches or redirects from the first-standard network to the second-standard network, each cell in the first cell set is a cell under the second-standard network.

[0090] Optionally, one or more cells in the first cell set may be identified by one or more cell identifiers (CellIDs).

[0091] Optionally, one or more cells in the first cell set may also be identified by at least one of a PLMN identifier, a frequency band identifier, or a frequency point identifier. For example, all cells corresponding to the PLMN identified as 46000 may constitute one or more cells in the first cell set; for another example, all cells corresponding to the frequency band identified as band3 may constitute one or more cells in the first cell set; for another example, all cells corresponding to the frequency point identified as 1275 may constitute one or more cells in the first cell set; for another example, all cells corresponding to the frequency band identified as band3 under the PLMN identified as 46000 may constitute one or more cells in the first cell set; for another example, all cells corresponding to the frequency point identified as 1275 under the PLMN identified as 46000 and the frequency band identified as band3 may constitute one or more cells in the first cell set; and so on. In other words, the first cell set may be associated with at least one of a PLMN, a frequency band, or a frequency point.

[0092] (4) First District

[0093] The first cell is a cell in the second-standard network to which the terminal device is restricted from accessing due to disabling the second-standard capability, that is, a cell to which the terminal device is restricted from accessing in a disabling scenario.

[0094] (5) Second cell set

[0095] There are multiple cells in the second cell set, and the second cell set includes the first cell.

[0096] Optionally, the second cell set is a set of cells associated with the first cell, and the second cell set may be related to at least one of the PLMN, frequency band or frequency point corresponding to the first cell.

[0097] (6) The terminal device attempts to access the cell

[0098] Optionally, the terminal device's attempt to access the cell may include the terminal device sending a registration request message to the core network device through the access network device. It should be noted that for cells under different network standards, the terminal device can select the access network device and core network device of the corresponding standard to send the registration request message. For example, if the cell is a cell under the LTE network standard, the terminal device sends a registration request message to the core network device of the LTE standard through the access network device of the LTE standard; for another example, if the cell is a cell under the GSM network standard, the terminal device sends a registration request message to the core network device of the GSM standard through the access network device of the GSM standard.

[0099] (7) The terminal device fails to access the cell

[0100] Optionally, the terminal device's failure to access a cell may include a terminal device registration failure. This may specifically include, but is not limited to, any of the following: for example, if the terminal device does not receive a registration response message from the access network device (within a preset time period), the terminal device registration fails; for another example, if the terminal device receives a registration response message from the access network device indicating a registration failure, the terminal device registration fails, etc. It should be noted that for cells under different network standards, the terminal device may receive a registration response message from the access network device of the corresponding standard, which will not be described in detail.

[0101] Furthermore, to improve the service success rate, the terminal device can attempt to access the cell multiple times. The terminal device determines that cell access has failed when the number of consecutive or cumulative cell access failures reaches m, where m is a positive integer. It should be noted that in the implementation of the cumulative number of cell access failures, the embodiments of this application do not limit the accumulation method.

[0102] (8) The terminal device successfully accesses the cell

[0103] Optionally, the successful access of the terminal device to the cell may include successful registration of the terminal device, which may specifically include but is not limited to any of the following: for example, if the terminal device receives a registration response message from the access network device (within a preset time period), the terminal device is successfully registered; for another example, if the terminal device receives a registration response message indicating successful registration from the access network device, the terminal device is successfully registered, etc.

[0104] It should be noted that for cells under different network standards, terminal devices can establish service connections with core network devices through access network devices of corresponding standards, thereby facilitating the completion of services. For example, when a terminal device successfully accesses a cell under an LTE network, the terminal device can establish service connections with LTE core network devices through LTE access network devices, thereby facilitating the terminal device to obtain services from the LTE network. For another example, when a terminal device successfully accesses a cell under a GSM network, the terminal device can establish service connections with GSM core network devices through GSM access network devices, thereby facilitating the terminal device to obtain services from the GSM network.

[0105] (9) Triggering process of switching or redirection

[0106] See Figure 2 , Figure 2 FIG. 1 shows a flow chart of triggering switching or redirection. Figure 2 As shown, it may include but not be limited to steps s11-s18:

[0107] s11: The terminal device successfully accesses the first-standard network.

[0108] In other words, the terminal device successfully registers with the core network device of the first standard through the access network device of the first standard.

[0109] s12: The terminal device sends a voice service request message to the core network device of the first standard through the access network device of the first standard.

[0110] Correspondingly, the core network device of the first standard receives the voice service request message.

[0111] Optionally, the voice service request message may indicate that the terminal device is a voice message initiator or a voice message receiver, and the core network device of the first standard may include an IP Multimedia Subsystem (IMS) network element.

[0112] s13: The core network device of the first standard responds to the voice service request message, establishes a protocol data unit (PDU) session connection corresponding to the voice service between the access network device of the first standard and the terminal device, and establishes a data bearer corresponding to the voice service.

[0113] Optionally, the data bearer may be a QoS data flow.

[0114] s14: The access network device of the first standard triggers the measurement process and sends a measurement request message to the terminal device.

[0115] Correspondingly, the terminal device receives the measurement request message.

[0116] Optionally, the measurement request message may include a measurement request configuration. For example, the measurement request configuration may indicate a measurement range of the terminal device.

[0117] s15: The terminal device responds to the measurement request message and sends a measurement report to be reported to the access network device of the first standard.

[0118] Correspondingly, the access network device of the first standard receives the measurement report.

[0119] s16: The access network device of the first standard triggers the EPS FB process based on the measurement report.

[0120] Optionally, the measurement report may indicate that the first-standard network cannot provide voice services for the terminal device, and that the second-standard network can provide voice services for the terminal device. Optionally, the inability of the first-standard network to provide voice services for the terminal device may be caused by the first-standard access network device or core network device, without limitation.

[0121] s17: The access network equipment of the first standard interrupts the data bearer corresponding to the voice service.

[0122] s18: The access network device of the first standard sends an indication message to the terminal device.

[0123] Correspondingly, the terminal device receives the indication message.

[0124] The indication message may include indication information, and the indication information is used to instruct the terminal device to switch or redirect from the first standard network to the first cell set of the second standard network. For example, the indication information is used to instruct the terminal device to switch or redirect from the NR standard network to the first cell set of the LTE standard network.

[0125] Optionally, the indication message may include an identifier of the first cell set.

[0126] Optionally, the indication message may further include a reason for the handover or redirection, such as the reason for the handover or redirection being an EPS FB process of an IMS voice service.

[0127] It can be seen that through steps s11 to s18, the terminal device can be triggered to switch from the first-standard network or redirect to the second-standard network.

[0128] The communication method of the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0129] See also Figure 3 , Figure 3 This is a flow chart of a communication method provided by an embodiment of the present application. When a terminal device switches or redirects from a first-standard network to a first cell set of a second-standard network, the terminal device can use different schemes to try to access the second-standard network, which can effectively improve the service success rate of the terminal device when switching or redirecting between different-standard networks, thereby effectively improving the service experience. Figure 3 As shown, the communication method includes but is not limited to steps S101 to S105:

[0130] S101: An access network device of the first standard sends an indication message to a terminal device.

[0131] Correspondingly, the terminal device receives an indication message from the access network device of the first standard.

[0132] Optionally, the first standard may be the NR standard.

[0133] S102: The terminal device determines to switch or redirect from the first-standard network to the first cell set of the second-standard network based on the indication message.

[0134] It should be noted that steps S101 to S102 describe the specific implementation of the terminal device determining to switch or redirect from the first-standard network to the first cell set of the second-standard network based on the indication message. In other implementation methods, the terminal device may also actively determine to switch or redirect from the first-standard network to the first cell set of the second-standard network.

[0135] Optionally, the second-standard network and the first-standard network refer to different-standard networks. For example, the first-standard network is an NR-standard network, and the second-standard network is an LTT-standard network.

[0136] S103: The terminal device determines whether the first cell set includes the first cell.

[0137] In an optional embodiment, if the first cell set includes the first cell, step S104 is executed; if the first cell set does not include the first cell, step S105 is executed.

[0138] Optionally, step S103 may specifically include: the terminal device matches each cell in the first cell set with the first cell; if a cell successfully matches the first cell, determining that the first cell set includes the first cell; otherwise, determining that the first cell set does not include the first cell. It should be noted that the matching operation may be performed based on the cell identifier.

[0139] It should be noted that, for the case where the first cell set includes the first cell, the terminal device is in a disabling scenario, and the terminal device uses the cell with restricted access as the target cell for switching or redirection. For the case where the first cell set does not include the first cell, the terminal device may not be in a disabling scenario, and / or the terminal device does not use the cell with restricted access as the target cell for switching or redirection.

[0140] S104: The terminal device attempts to access the second-standard network according to the deactivation reason.

[0141] S105: The terminal device attempts to access the second-standard network according to the service success rate of accessing each cell in the first cell set.

[0142] Optionally, the second-standard network may include a second-standard access network device and a second-standard core network device.

[0143] It should be noted that, in some embodiments, the communication method may omit step S102.

[0144] It should be noted that, before step S101, the communication method may further include Figure 2 S11 to S17 are not described in detail.

[0145] It can be seen that in this embodiment, for the scenario where the first cell set includes the first cell, the terminal device can attempt to access the second-standard network according to the deactivation reason. Compared with the solution of not accessing the second-standard network, the embodiment of the present application can still attempt to access the second-standard network in the scenario where the first cell set includes the first cell, which is beneficial for the terminal device that cannot complete the service to complete the service; for the scenario where the first cell set does not include the first cell, the terminal device attempts to access the second-standard network according to the service success rate of accessing each cell in the first cell set. The terminal device preferentially attempts to access cells with higher service success rates, which is beneficial for improving the service success rate. In addition, the terminal device can perform differentiated processing for the scenario where the first cell set includes the first cell and the scenario where the first cell set does not include the first cell, and adopt different solutions to optimize the access method, which can effectively improve the service success rate of the terminal device when switching or redirecting between different-standard networks, thereby effectively improving the service experience.

[0146] See Figure 4 , Figure 4 A flow chart of another communication method is shown. Figure 4 The communication method describes the specific implementation of the terminal device attempting to access the second standard network according to the deactivation reason in the scenario where the first cell set includes the first cell. Figure 4 As shown, the communication method may include but is not limited to steps S201 to S205:

[0147] S201: The access network device of the first standard sends an indication message to the terminal device.

[0148] S202: The terminal device determines to switch or redirect from the first-standard network to the first cell set of the second-standard network based on the indication message.

[0149] S203: If the first cell set includes the first cell, the terminal device determines, based on the disabling reason, whether the degree of relevance between disabling the second standard capability and the terminal device itself is at a first level.

[0150] It should be noted that a detailed description of the reasons for disabling the function can be found in the previous article and will not be repeated here.

[0151] It should be noted that a detailed description of the first level can be found in the previous article and will not be repeated here.

[0152] S204: If the terminal device determines that the degree of relevance of disabling the second-standard capability to the terminal device itself is at the first level, the terminal device attempts to access the second-standard network.

[0153] In an optional implementation, if the terminal device determines that the degree of relevance of disabling the second-standard capability to the terminal device itself is at the first level, the terminal device re-enables the second-standard capability and attempts to access the second-standard network.

[0154] Specifically, the terminal device may execute any of the following branches according to the number of cells in the first cell set:

[0155] Branch 1: If there are multiple cells in the first cell set (ie, the first cell set includes the first cell and other cells except the first cell), the terminal device re-enables the second standard capability and attempts to access each cell in the first cell set.

[0156] Optionally, the terminal device attempts to access each cell in the first cell set, including: the terminal device attempts to access each cell in the first cell set randomly or sequentially until the terminal device successfully accesses the cell.

[0157] It can be seen that in this implementation, the terminal device can actively restore the second-standard capability and actively try to access the first cell set of the second-standard network. In other words, the terminal device can try to communicate with the second-standard network to cancel the suppression of the second-standard capability of the terminal device to access the first cell set.

[0158] Branch 2: If the number of cells in the first cell set is one (ie, the first cell set includes only the first cell), the terminal device re-enables the second standard capability and attempts to access the first cell.

[0159] It can be seen that in this implementation, the terminal device can actively restore the second-standard capability and actively try to access the first cell of the second-standard network. In other words, the terminal device can try to communicate with the second-standard network to cancel the suppression of the second-standard capability of the terminal device to access the first cell.

[0160] Optionally, after the terminal device attempts to access the first cell, the method further includes: if access to the first cell fails, attempting to access other cells in the second cell set excluding the first cell. Thus, in this implementation, the terminal device can attempt to access not only the first cell but also other cells in the second cell set corresponding to the first cell, effectively improving the service success rate and thus the service experience.

[0161] In other implementations, if a terminal device fails to access the second-standard network (including failure to access any cell within the first cell set, or failure to access the first cell), the terminal device may attempt to access a third-standard network. This allows a terminal device that is unable to complete a service through the second-standard network to access the third-standard network, effectively improving the service success rate and thus the service experience.

[0162] S205: If the terminal device determines that the degree of relevance of disabling the second-standard capability to the terminal device itself is at the second level, the terminal device attempts to access a third-standard network.

[0163] As can be seen, in scenarios where the degree of relevance of disabling the second-standard capability of a terminal device to the terminal device itself is at the second level, the terminal device may be unable to access the second-standard network. The terminal device can directly attempt to access the third-standard network, which is beneficial for the terminal device that cannot access the second-standard network to complete services on the third-standard network. At the same time, compared with the solution where the terminal device attempts to access the third-standard network after failing to access the second-standard network, this implementation method can shorten access time and improve efficiency.

[0164] Among them, the third-standard network is different from the first-standard network and the second-standard network. For example, if the first-standard network is an NR-standard network and the second-standard network is an LTE-standard network, the third-standard network can be any one of a GSM-standard network, a GPRS-standard network, a WCDMA-standard network, or a TD-SCDMA-standard network. Optionally, the third-standard network may include a third-standard access network device and a third-standard core network device. In one implementation, the terminal device attempts to access the third-standard network, specifically including: the terminal device attempts to access any cell under the third-standard network.

[0165] It should be noted that, in some embodiments, the communication method may also omit step S202.

[0166] It should be noted that, before step S201, the communication method may further include Figure 2 S11 to S17 are not described in detail.

[0167] It can be seen that in this embodiment, for the scenario where the degree of correlation between the terminal device disabling the second-standard capability and the terminal device itself is the first level (that is, the scenario where the degree of correlation between the terminal device disabling the second-standard capability and the terminal device itself is low), the terminal device can actively restore the second-standard capability and actively attempt to access the second-standard network. Compared with the solution of not accessing the second-standard network, the embodiment of the present application can still attempt to access the second-standard network, which is beneficial for the terminal device that cannot complete the service to complete the service under the second-standard network. For the scenario where the degree of correlation between the terminal device disabling the second-standard capability and the terminal device itself is the second level (that is, the scenario where the degree of correlation between the terminal device disabling the second-standard capability and the terminal device itself is high), the terminal device can directly attempt to access the third-standard network. Compared with the solution in which the terminal device attempts to access the third-standard network after failing to access the second-standard network, this implementation method can shorten the access time and improve efficiency. For different scenarios, the terminal device performs differentiated processing and adopts different solutions to optimize the access method, which can effectively improve the service success rate of the terminal device when switching or redirecting between different-standard networks, thereby effectively improving the service experience.

[0168] See Figure 5 , Figure 5 A flow chart of another communication method is shown. Figure 5 This describes the specific implementation of the terminal device attempting to access the second standard network based on the service success rate of accessing each cell in the first cell set when the first cell set does not include the first cell. Figure 5 As shown, the communication method may include but is not limited to steps S301 to S305:

[0169] S301: The access network device of the first standard sends an indication message to the terminal device.

[0170] S302: The terminal device determines to switch or redirect from the first-standard network to the first cell set of the second-standard network based on the indication message.

[0171] S303: If the first cell set does not include the first cell, the terminal device determines whether the success rate of the service performed by each cell in the first cell set is lower than a threshold.

[0172] In an optional embodiment, if the success rate of the terminal device performing services in each cell is lower than a threshold, the terminal device executes step S304, otherwise executes step S305. It should be noted that the threshold can be manually set based on experience or obtained by the terminal device through autonomous learning, without limitation.

[0173] S304: The terminal device attempts to access a second cell, where the second cell is a cell where the success rate of the terminal device performing services is higher than or equal to a threshold.

[0174] Optionally, when the terminal device needs to switch from the first-standard network to the first cell set of the second-standard network, the second cell can be a cell under the second-standard network or a cell under the third-standard network, without limitation.

[0175] For example, in a scenario where a terminal device switches from a first-standard network to a second-standard network, the first cell set includes one cell (i.e., a unique target cell is specified). If the success rate of the terminal device in performing services in this cell is lower than a threshold, the terminal device may not attempt to access the cell, but instead try to access a second cell with a higher success rate in performing services on the terminal device, which can effectively improve the service experience.

[0176] For example, in a scenario where a terminal device is redirected from a first-standard network to a second-standard network, the first cell set includes multiple cells (i.e., multiple target cells with higher priorities are specified). If the success rate of the terminal device in performing services in these cells is lower than a threshold, the terminal device may not give priority to trying the specified target cells with higher priorities, but may give priority to trying the second cell that has a higher success rate in allowing the terminal device to perform services, which can effectively improve the service experience.

[0177] S305: The terminal device selects a cell from the first cell set in which the success rate of the terminal device executing the service is higher than or equal to a threshold, and attempts to access the cell.

[0178] Optionally, whether the success rate of the terminal device in performing services in a cell is lower than a threshold is determined based on the signal strength of the cell. For example, if the signal strength of a cell is lower than a preset signal strength, the cell is a cell where the success rate of the terminal device in performing services is lower than the threshold. If the signal strength of a cell is higher than or equal to the preset signal strength, the cell is a cell where the success rate of the terminal device in performing services is higher than or equal to the threshold. Exemplarily, due to unreasonable measurement event configuration or other factors, the terminal device may report a measurement report of a cell with a signal strength lower than a preset signal strength. When the access network device uses the cell as the target cell, the terminal device may not be able to complete uplink and downlink synchronization with the cell, resulting in the success rate of the terminal device in performing services in the cell being lower than the threshold.

[0179] Optionally, whether the success rate of the terminal device in performing services in a cell is lower than a threshold is determined based on historical information of the terminal device in performing services in the cell. For example, if the terminal device has failed to perform services in a cell in the past, the cell is a cell where the success rate of the terminal device in performing services is lower than a threshold (for example, when network congestion or other reasons cause the terminal device to fail to perform services in the cell for p consecutive or cumulative times, the success rate of the terminal device in performing services in the cell is lower than a threshold, where p is a positive integer). If the terminal device has successfully performed services in a cell in the past, the cell is a cell where the success rate of the terminal device in performing services is higher than or equal to the threshold.

[0180] It should be noted that, when the switching or redirection in the embodiment of the present application is applied to services other than voice services (such as emergency call services), the second cell may also be a cell under the first-standard network.

[0181] It should be noted that, in some embodiments, the communication method may omit step S302.

[0182] It should be noted that, before step S301, the communication method may further include Figure 2 S11 to S17 are not described in detail.

[0183] It can be seen that in this embodiment, when the success rate of the terminal device in executing services in each cell within the first cell set is lower than the threshold, the terminal device may not attempt to access each cell in the first cell set, but instead try to access the second cell where the terminal device has a higher success rate in executing services, which can effectively improve the service experience.

[0184] Furthermore, in an optional implementation, when the terminal device is in a disabled scenario, the terminal device may further filter the reported measurement reports so that the first cell set does not include the first cell. Figure 6 , Figure 6 A flow chart of another communication method is shown.

[0185] like Figure 6 As shown, the communication method may include but is not limited to steps S401 to S404:

[0186] S401: The access network device of the first standard triggers a measurement process and sends a measurement request message to the terminal device.

[0187] Correspondingly, the terminal device receives the measurement request message.

[0188] S402: The terminal device responds to the measurement request message and obtains the measurement report to be reported according to the disabling reason.

[0189] In an optional implementation, if the terminal device determines that the degree of relevance of disabling the second standard capability to the terminal device itself is the second level, the terminal device may execute either of the following two branches:

[0190] Branch one: suppress the measurement of the first cell, that is, the terminal device measures other cells except the first cell within the measurement range, and the measurement report to be reported does not include the measurement report of the first cell. It can be seen that in this implementation method, the terminal device does not report the measurement report of the first cell, which can prevent the access network device from using the first cell that the terminal device restricts access to as the target cell during switching or redirection. The terminal device can suppress the first cell as the target cell during switching or redirection from the source, that is, the first cell set does not include the first cell, which is conducive to the terminal device completing the service normally in each cell of the first cell set.

[0191] Branch 2: Suppress the measurement of each cell in the second cell set, that is, the terminal device measures other cells within the measurement range except the second cell set, and the measurement report to be reported does not include the measurement report of each cell in the second cell set. It can be seen that in this implementation method, the terminal device does not report the measurement report of each cell in the second cell set, which can prevent the access network device from using the first cell that the terminal device restricts access to and other cells in the second cell set as target cells during switching or redirection. The terminal device can suppress it from the source, so that the first cell set does not include the first cell and other cells in the second cell set, which is conducive to the terminal device to complete the service normally in each cell in the first cell set.

[0192] In another optional implementation, if the terminal device determines that the degree of relevance of disabling the second standard capability to the terminal device itself is the first level, the terminal device does not suppress cell measurement, and the measurement report to be reported includes measurement reports of all cells within the measurement range.

[0193] It should be noted that the measurement range may be pre-configured or may be indicated by the access network device through a measurement request configuration in a measurement request message, which will not be described in detail.

[0194] S403: The terminal device sends a measurement report to be reported to the access network device of the first standard.

[0195] Correspondingly, the access network device of the first standard receives the measurement report reported by the terminal device.

[0196] If the degree of correlation between the terminal device disabling the second standard capability and the terminal device itself is the second level, the reported measurement report does not include the measurement report of the first cell, or the reported measurement report does not include the measurement reports of each cell in the second cell set.

[0197] If the degree of relevance between the terminal device's disabling of the second standard capability and the terminal device itself is at the first level, the reported measurement report includes measurement reports of all cells within the measurement range.

[0198] S404: The access network device of the first standard determines a first cell set based on the reported measurement report.

[0199] Optionally, when the reported measurement report does not include the measurement report of the first cell, the first cell set does not include the first cell.

[0200] Optionally, when the reported measurement report does not include measurement reports of each cell in the second cell set, the first cell set does not include the first cell and other cells in the second cell set.

[0201] It should be noted that in other implementations, when the reported measurement report does not include the measurement report of the first cell, or the reported measurement report does not include the measurement reports of each cell in the second cell set, the access network device may also use the first cell to which the terminal device is restricted from access as the target cell during switching or redirection, that is, the first cell set may also include the first cell.

[0202] It can be seen that in this embodiment, the terminal device may not report the measurement report of the first cell, which can avoid the access network device using the first cell restricted for access by the terminal device as the target cell during switching or redirection. The terminal device can suppress the first cell as the target cell during switching or redirection from the source, that is, the first cell set does not include the first cell, which is conducive to the terminal device to complete the service normally in each cell in the first cell set.

[0203] It should be noted that Figure 6 The method described can be used with Figure 3 The method described to Figure 5 At least one of the methods described above is used in combination. For example, Figure 6 The method described can be used with Figure 4 The above methods are used in combination. When the terminal device recovers the second standard capability and actively attempts to access the second standard network but fails, the terminal device can Figure 6 The method suppresses the first cell (or each cell in the second cell set) from being a target cell for handover or redirection; for example, Figure 6 The method described can be used with Figure 5 The method described above is used in combination, the terminal device can first Figure 6 The method suppresses the first cell (or each cell in the second cell set) from being the target cell for handover or redirection, and then Figure 5 The method attempts to access the first cell or the second cell, and so on.

[0204] It should be noted that for the case of hybrid networking, there is a special access network device that can simultaneously have multiple standard capabilities. For example, the access network device can simultaneously have the first standard capability corresponding to the first standard network and the second standard capability corresponding to the second standard network. The first standard access network device and / or the second standard access network device of the aforementioned embodiment can be replaced with this special access network device. The terminal device can connect to the core network device of the first standard through the access network device to establish a service connection, and can also connect to the core network device of the second standard through the access network device to establish a service connection.

[0205] It can be understood that in the above embodiments, the methods and / or steps implemented by the terminal device can also be implemented by components of the terminal device (such as chips or circuits); the methods and / or steps implemented by the access network device of the first standard can also be implemented by components of the access network device of the first standard (such as chips or circuits).

[0206] The above mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements. Accordingly, the embodiments of the present application also provide a communication device, which is used to implement the various methods described above. The communication device can be a terminal device or a component of a terminal device in the above method embodiments; alternatively, the communication device can be a first-standard access network device or a component of a first-standard access network device in the above method embodiments.

[0207] It is understandable that, in order to realize the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware 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 this application.

[0208] In the embodiment of the present application, the functional modules of the communication device can be divided according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0209] Based on the same concept of the above communication method, the present application also provides the following communication device:

[0210] like Figure 7 FIG. 7 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 700 includes a transceiver unit 701 and a processing unit 702; wherein:

[0211] When the communication device is used to implement the functions of the terminal device in the above method embodiment, the transceiver unit 701 is used to execute Figure 3 In the embodiment shown, the operations of the terminal device in S101, S104, and S105, and the processing unit 702 is used to perform the following operations: Figure 3 The operation of the terminal device in S102 and S103 in the embodiment shown; or, the transceiver unit 701 is used to perform Figure 4 In the embodiment shown, the operations of the terminal device in S201, S204, and S205, and the processing unit 702 is used to perform the following operations: Figure 4 The operation of the terminal device in S202 and S203 in the embodiment shown; or, the transceiver unit 701 is used to perform Figure 5 In the embodiment shown, the operations of the terminal device in S301, S304, and S305, and the processing unit 702 is used to perform the following operations: Figure 5 The operation of the terminal device in S302 and S303 in the embodiment shown; or, the transceiver unit 701 is used to perform Figure 6 In the embodiment shown, the operations of the terminal device in S401 and S403, and the processing unit 702 are used to perform the following operations: Figure 6 The operation of the terminal device in S402 in the embodiment is shown.

[0212] When the communication device is used to implement the function of the access network device of the first standard in the above method embodiment, the transceiver unit 701 is used to execute Figure 3 In the embodiment shown, the operation of the access network device of the first standard in S101; or, the transceiver unit 701 is used to perform Figure 4 In the embodiment shown, the operation of the access network device of the first standard in S201; or, the transceiver unit 701 is used to perform Figure 5 The operation of the access network device of the first standard in S301 of the embodiment shown; or, the transceiver unit 701 is used to perform Figure 6 In the embodiment shown, the operation of the access network device of the first standard in S401 and S403, and the processing unit 702 is used to perform the following Figure 6 The operation of the access network device of the first standard in S404 in the illustrated embodiment.

[0213] like Figure 8 As shown, it is a structural diagram of another communication device provided in an embodiment of the present application, and the communication device 800 includes a processor 801 and a memory 803. The memory 803 is used to store instructions executed by the processor 801, or to store input data required by the processor 801 to run instructions, or to store data generated after the processor 801 runs instructions. Optionally, the communication device 800 may also include an interface circuit 802 (indicated by a dotted line in the figure), and the processor 801 and the interface circuit 802 are coupled to each other. It can be understood that the interface circuit 802 can be a transceiver or an input and output interface. Among them, the processor 801 is used to implement the above Figure 7 The functions of the processing unit 702 in the embodiment shown; and the interface circuit 802 are used to implement the above Figure 7 The functions of the transceiver unit 701 in the illustrated embodiment.

[0214] When the communication device is a chip used in a terminal device, the chip implements the functions of the terminal device in the above method embodiments. The chip receives information from other modules (such as a radio frequency module or antenna) in the terminal device, or the chip sends information to other modules (such as a radio frequency module or antenna) in the terminal device.

[0215] When the communication device is a chip used in a first-standard access network device, the chip implements the functions of the first-standard access network device in the above method embodiments. The chip receives information from other modules (such as a radio frequency module or antenna) in the first-standard access network device, or the chip sends information to other modules (such as a radio frequency module or antenna) in the first-standard access network device.

[0216] In addition, it should be noted that the aforementioned transceiver unit and / or processing unit may be implemented through virtual modules, for example, the processing unit may be implemented through a software function unit or a virtual device, and the transceiver unit may be implemented through a software function or a virtual device. Alternatively, the processing unit or transceiver unit may also be implemented through a physical device, for example, if the device is implemented using a chip / chip circuit, the transceiver unit may be an input / output circuit and / or a communication interface, performing input operations (corresponding to the aforementioned receiving operations) and output operations (corresponding to the aforementioned sending operations); the processing unit may be an integrated processor, microprocessor, or integrated circuit.

[0217] The division of modules in this application is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the examples of this application may be integrated into a single processor, exist physically as separate modules, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in either hardware or software functional modules.

[0218] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0219] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed, the method in the above embodiment is implemented.

[0220] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method in the above embodiment.

[0221] An embodiment of the present application also provides a communication system, including the above-mentioned communication device.

[0222] The present application also provides a circuit, which is coupled to a memory and is used to execute the method shown in the above embodiment. The circuit may include a chip circuit.

[0223] It should be noted that the above units or one or more of the units can be implemented by software, hardware, or a combination of the two. When any of the above units or units is implemented by software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flow.

[0224] In this application, a processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in this application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in this application may be directly executed by a hardware processor, or by a combination of hardware and software modules within the processor.

[0225] The processor can be built into a system on chip (SoC) or ASIC, or it can be a standalone semiconductor chip. In addition to the core that executes software instructions to perform calculations or processing, the processor can also include necessary hardware accelerators, such as field programmable gate arrays (FPGAs), programmable logic devices (PLDs), or logic circuits that implement specialized logic operations.

[0226] When the above units or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0227] Optionally, an embodiment of the present application further provides a chip system, comprising: at least one processor and an interface, wherein the at least one processor is coupled to a memory via the interface, and when the at least one processor executes a computer program or instruction in the memory, the chip system executes the method in any of the above method embodiments. Optionally, the chip system may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiments of the present application.

[0228] In the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory, such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0229] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using a software program, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0230] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and implement other changes to the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0231] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

[0232] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0233] The components in the device of the embodiment of the present application can be merged, divided, or deleted according to actual needs. Those skilled in the art can combine or combine the different embodiments and features of the different embodiments described in this specification.

[0234] The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments of the present application.

[0235] In this application, under the premise of no logical contradiction, the examples can reference each other, for example, the methods and / or terms between method embodiments can reference each other, for example, the functions and / or terms between device embodiments can reference each other, for example, the functions and / or terms between device examples and method examples can reference each other.

[0236] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include these modifications and variations.

Claims

1. A communication method, characterized in that: The method comprises: If handover or redirection is performed from a first-standard network to a first cell set of a second-standard network, determining whether the first cell set includes a first cell, where the first cell is a cell to which access is restricted due to disabling the second-standard capability of the terminal device; If the first cell set includes the first cell, attempt to access the second-standard network according to the disabling reason, and the disabling reason is used to describe the degree of relevance between the terminal device's disabling of the second-standard capability and the terminal device itself.

2. The method according to claim 1, wherein The number of cells in the first cell concentration is multiple, and the attempting to access the second-standard network according to the deactivation reason includes: If the degree of relevance between the terminal device's disabling of the second standard capability and the terminal device itself is at the first level, the second standard capability is re-enabled, and access to each cell of the first cell set is attempted.

3. The method according to claim 1, wherein The number of cells in the first cell set is one, and the attempting to access the second-standard network according to the deactivation reason includes: If the degree of relevance between the terminal device's disabling of the second standard capability and the terminal device itself is at the first level, the second standard capability is re-enabled, and access to the first cell is attempted.

4. The method according to claim 3, wherein After attempting to access the first cell, the method further includes: If access to the first cell fails, try to access other cells in a second cell set except the first cell; the second cell set includes the first cell, and the number of cells in the second cell set is multiple.

5. The method according to claim 2 or 3, wherein: The method further comprises: If the degree of relevance between the terminal device disabling the second-standard capability and the terminal device itself is at the second level, an attempt is made to access a third-standard network, where the third-standard network is different from the first-standard network and the second-standard network.

6. The method according to any one of claims 1 to 5, characterized in that The method further comprises: receiving a measurement request message; In response to the measurement request message, a measurement report to be reported is determined according to the disabling reason; the measurement report is used to determine the first cell set.

7. The method according to claim 6, wherein If the degree of correlation between the terminal device's disabling of the second standard capability and the terminal device itself is at the second level, the measurement report to be reported does not include the measurement report of the first cell.

8. The method according to claim 6, wherein If the degree of correlation between the terminal device's disabling of the second standard capability and the terminal device itself is at the second level, the measurement report to be reported does not include measurement reports of each cell in the second cell set.

9. The method according to claim 1, wherein After determining whether the first cell set includes the first cell, the method further includes: If the first cell set does not include the first cell, determining whether a success rate of the terminal device performing services in each cell in the first cell set is lower than a threshold; If it is lower than the threshold, try to access a second cell, where the second cell is a cell where the success rate of the terminal device performing services is higher than or equal to the threshold.

10. The method according to claim 9, wherein Whether the success rate of the terminal device performing services in a cell is lower than the threshold is determined based on the signal strength of the cell.

11. The method according to claim 9, wherein Whether the success rate of the terminal device in performing services in a cell is lower than the threshold is determined based on historical information of the terminal device in performing services in the cell.

12. The method according to any one of claims 1 to 11, characterized in that The method further comprises: An indication message is received, where the indication message includes indication information, where the indication information is used to instruct the terminal device to switch or redirect from the first-standard network to the first cell set of the second-standard network.

13. A communication system, characterized in that: The communication system includes a terminal device, an access network device of a first standard, and an access network device of a second standard: The access network device of the first standard sends an indication message to the terminal device, where the indication message includes indication information, where the indication information is used to instruct the terminal device to switch or redirect from the first standard network to the first cell set of the second standard network; Determining, by the terminal device, whether the first cell set includes a first cell, where the first cell is a cell to which the terminal device is restricted from access by disabling the second standard capability; If the first cell set includes the first cell, the terminal device attempts to access the access network device of the second standard according to the disabling reason, and the disabling reason is used to describe the degree of relevance between the terminal device's disabling of the second standard capability and the terminal device itself.

14. A communication device, characterized in that: The apparatus includes modules or units for implementing the method according to any one of claims 1 to 12.

15. A communication device, characterized in that: including memory and processor; The memory is used to store instructions or computer programs; The processor is configured to execute the computer program or instructions stored in the memory, so as to enable the communication device to perform the method according to any one of claims 1 to 12.

16. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 12 is implemented.

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