A service access method, device and storage medium

Abstract

The present invention provides a service access method, device and storage medium, which relate to the field of communication technology and are applied to the 5G core network. The method includes: receiving a registration update request from a terminal, the registration update request is sent when the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state; performing security authentication on the terminal; when it is determined that the security authentication of the terminal passes, configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network; returning a registration acceptance message corresponding to the registration update request to the terminal, the registration acceptance message carries the session state parameters corresponding to the target data network, so that the terminal determines the service access mode in the target data network according to the session state parameters. The embodiment of the present invention can realize service access of terminals across data networks in a 5G network.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a service access method, device and storage medium. Background Art

[0002] In the railway system, when a train travels across multiple bureaus, the train control services between the bureaus need to be handed over to the RBC (Radio Block Center) across the bureaus, that is, the business of each bureau is handed over. Figure 1 , shows a schematic diagram of railway bureau business handover of a train in the prior art. Each railway bureau corresponds to a data network, such as Figure 1 As shown in the figure, taking the example of a train moving from Bureau 1 to Bureau 2, two terminals are typically used to control the train's services. Terminal A controls the train's services for the current bureau, while Terminal B takes over services for the new bureau after the train crosses bureaus. This allows for service handover between bureaus by alternately communicating between the two terminals over their corresponding data networks.

[0003] The current railway system uses GSM-R (Global System for Mobile Communications–Railway) as the train communication network, which adopts the 2G (2nd Generation wireless telephone technology) network and is not suitable for the 5G (5th Generation Mobile Communication Technology) network. Summary of the Invention

[0004] The present invention provides a service access method, device and storage medium to solve the problem in the prior art that terminal service access across data networks cannot be achieved in 5G networks.

[0005] According to a first aspect of the present invention, a service access method is provided, which is applied to a 5G core network. The method includes:

[0006] receiving a registration update request from a terminal, where the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and the terminal is in an idle state;

[0007] Performing security authentication on the terminal;

[0008] When it is determined that the security authentication of the terminal passes, configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network;

[0009] A registration acceptance message corresponding to the registration update request is returned to the terminal, where the registration acceptance message carries a session state parameter corresponding to the target data network, so that the terminal determines a service access mode in the target data network according to the session state parameter.

[0010] The present invention also provides another service access method, which is applied to a terminal, and the method includes:

[0011] When the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state, sending a registration update request to the 5G core network;

[0012] receiving a registration accept message returned by the 5G core network in response to the registration update request, where the registration accept message is sent by the 5G core network when determining that security authentication of the terminal has passed, and the registration accept message carries a session state parameter corresponding to the target data network;

[0013] The service access mode in the target data network is determined according to the session state parameters, and service access is performed according to the determined service access mode.

[0014] According to a second aspect of the present invention, a device is provided for use in a 5G core network, the device comprising a memory, a transceiver, and a processor: the memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0015] receiving a registration update request from a terminal, where the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and the terminal is in an idle state;

[0016] Performing security authentication on the terminal;

[0017] When it is determined that the security authentication of the terminal passes, configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network;

[0018] A registration acceptance message corresponding to the registration update request is returned to the terminal, where the registration acceptance message carries a session state parameter corresponding to the target data network, so that the terminal determines a service access mode in the target data network according to the session state parameter.

[0019] The present invention also provides another device, applied to a terminal, comprising a memory, a transceiver, and a processor: the memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0020] When the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state, sending a registration update request to the 5G core network;

[0021] receiving a registration accept message returned by the 5G core network in response to the registration update request, where the registration accept message is sent by the 5G core network when determining that security authentication of the terminal has passed, and the registration accept message carries a session state parameter corresponding to the target data network;

[0022] The service access mode in the target data network is determined according to the session state parameters, and service access is performed according to the determined service access mode.

[0023] According to a third aspect of the present invention, a service access device is provided, which is applied to a 5G core network. The device includes:

[0024] A registration update request receiving module, configured to receive a registration update request from a terminal, wherein the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and the terminal is in an idle state;

[0025] A security authentication module, configured to perform security authentication on the terminal;

[0026] A session state parameter configuration module, configured to configure the session state parameters corresponding to the target data network according to the customized policy of the target data network when it is determined that the security authentication of the terminal has passed;

[0027] A registration acceptance message sending module is used to return a registration acceptance message corresponding to the registration update request to the terminal, wherein the registration acceptance message carries the session state parameters corresponding to the target data network, so that the terminal determines the service access mode in the target data network according to the session state parameters.

[0028] The present invention also provides another service access device, which is applied to a terminal, and includes:

[0029] a registration update request sending module, configured to send a registration update request to the 5G core network when the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state;

[0030] a registration accept message receiving module, configured to receive a registration accept message returned by the 5G core network in response to the registration update request, wherein the registration accept message is sent by the 5G core network when determining that the security authentication of the terminal has passed, and the registration accept message carries a session state parameter corresponding to the target data network;

[0031] The service access module is used to determine the service access mode in the target data network according to the session state parameters, and perform service access according to the determined service access mode.

[0032] According to a fourth aspect of the present invention, a processor-readable storage medium is provided, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the aforementioned service access method.

[0033] The present invention provides a service access method, device and storage medium, which relate to the field of communication technology. The method is applied to a 5G core network, and specifically includes: receiving a registration update request from a terminal, the registration update request is sent when the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state; performing security authentication on the terminal; when it is determined that the security authentication of the terminal passes, configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network; returning a registration acceptance message corresponding to the registration update request to the terminal, the registration acceptance message carries the session state parameters corresponding to the target data network, so that the terminal determines the service access mode in the target data network according to the session state parameters. The present invention can respond to the registration update request sent by the terminal, configure the session state parameters of the target data network according to the customized policy of the target data network, so that the terminal determines the service access mode and performs service access according to the session state parameters of the target data network, thereby realizing the switching of the service access point after the terminal enters the target data network in the 5G network.

[0034] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] Figure 1 This is a schematic diagram of railway bureau business transfer for a train in the prior art;

[0037] Figure 2 This is a flowchart of the specific steps of a service access method provided by an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of a service access process provided by an embodiment of the present invention;

[0039] Figure 4 This is a flowchart of the specific steps of another service access method provided by an embodiment of the present invention;

[0040] Figure 5 is a structural diagram of a device provided by an embodiment of the present invention;

[0041] Figure 6 is a structural diagram of another device provided by an embodiment of the present invention;

[0042] Figure 7 This is a structural diagram of a service access device provided by an embodiment of the present invention;

[0043] Figure 8 It is a structural diagram of another service access device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In embodiments of the present invention, the term "and / or" describes the association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0045] In the embodiments of the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] Example 1

[0048] Reference Figure 2 , which shows a flowchart of the specific steps of a service access method provided in Embodiment 1 of the present invention. The method is applied to a 5G core network and specifically includes the following steps:

[0049] Step 101: Receive a registration update request from a terminal, where the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and is in an idle state.

[0050] Step 102: Perform security authentication on the terminal.

[0051] Step 103: When it is determined that the terminal passes security authentication, the session state parameters corresponding to the target data network are configured according to the customized policy of the target data network.

[0052] Step 104: Return a registration acceptance message corresponding to the registration update request to the terminal, wherein the registration acceptance message carries session state parameters corresponding to the target data network, so that the terminal determines a service access mode in the target data network according to the session state parameters.

[0053] The service switching method provided in the embodiment of the present invention can be applied to the 5G core network. The embodiment of the present invention can implement the switching of service access points after the terminal enters the target data network in the 5G network.

[0054] The target data network is the data network corresponding to the tracking area that the terminal has newly entered. A tracking area is the geographical area covered by a data network when the network is deployed. For example, if a data network is deployed according to urban areas, each city such as Beijing, Xi'an, and Jinan is a tracking area; or, if a data network is deployed according to provinces, each province is a tracking area. Of course, data networks can also be deployed in other ways, which are not specifically limited in the embodiments of the present invention. Each tracking area corresponds to a data network. When a terminal leaves the current tracking area and enters another tracking area, a mobility registration update is required.

[0055] For example, when a terminal enters tracking area B from tracking area A, the target data network is the data network corresponding to tracking area B. When the terminal enters tracking area B and is in the idle state (CM-IDLE), it has not yet established a signaling connection with the core network. In this case, the terminal can establish a signaling connection with the core network by sending a registration update request to the core network. It should be noted that the terminal typically does not send the registration update request directly to the core network. Instead, it sends it to the base station corresponding to the target data network, which then forwards it to the core network.

[0056] After receiving the registration update request sent by the terminal, the core network performs security authentication on the terminal. The specific authentication process can refer to the relevant specifications in the communication protocol TS23.502, and the embodiment of the present invention does not make further limitations on this.

[0057] When the core network determines that the terminal security authentication has passed, it further configures the session state parameters corresponding to the target data network according to the customized policy of the target data network. The customized policy of the target data network is used to limit the service access mode of the terminal in the target data network. In the embodiment of the present invention, there are two types of service access modes: local grooming access mode and home routing access mode. If the service access mode is local grooming access mode, the terminal accesses the service through the target data network; if the service access mode is home routing access mode, the terminal accesses the service through the current data network. The current data network is the data network that the terminal accesses before performing mobility registration update. For example, if the terminal enters tracking area B from tracking area A, if the data network that the terminal accesses before the mobility registration update is the data network corresponding to tracking area A, the current data network of the terminal is the data network of tracking area A. The session state parameter, also known as PDUSESSION STATUS, is used to reflect the session bearer information corresponding to the data network, and different customized policies correspond to different session state parameters. Specifically, if the location strategy of the target data network is to release the session state information of the current data network, the state value of the session state parameter corresponding to the target data network is set to PDU SESSION INACTIVE; otherwise, it is set to NOT PDU SESSION INACTIVE. Referring to Table 1, a customized strategy for a data network provided by an embodiment of the present invention is shown:

[0058] Table 1

[0059]

[0060] As shown in Table 1, each data network corresponds to a customization policy, and each customization policy corresponds to a service access mode. Furthermore, in this embodiment of the present invention, the session state parameters corresponding to the target data network are configured based on the customization policy of the target data network. Therefore, the customization policy, session state parameters, and service access mode of the target data network all have a one-to-one correspondence.

[0061] After the core network completes configuration of the session state parameters for the target data network, it returns a registration acceptance message carrying the session state parameters to the terminal. Based on the received session state parameters, the terminal determines whether to retain or release the session state information for the current data network, establishes a new session bearer on the target data network, and implements handover of the service access point on the target data network.

[0062] In an optional embodiment of the present invention, the step 103 of configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network includes:

[0063] Step S11: If the customized policy of the target data network is to release the session state information corresponding to the current data network, then the session state parameter corresponding to the target data network is configured to be a first state value, where the first state value is used to instruct the terminal to release the session state information of the current data network, and the service access mode is determined to be a local grooming access mode;

[0064] Step S12: If the customized policy of the target data network is to retain the session state information corresponding to the current data network, the session state parameter corresponding to the target data network is configured to be a second state value, and the second state value is used to instruct the terminal to retain the session state information of the current data network, and determine that the service access mode is the home routing access mode.

[0065] After the terminal receives the registration acceptance message returned by the core network, if the session state parameter carried by the registration acceptance message is the first state value, the terminal will release the session state information of the current data network and determine the service access mode as the local routing access mode, that is, establish a new session bearer in the target data network, and perform service access based on the target data network; if the session state parameter carried by the registration acceptance message is the second state value, the terminal will retain the session limit information of the current data network and determine the service access mode as the home routing access mode, that is, perform service access based on the current data network.

[0066] In an optional embodiment of the present invention, the method further includes:

[0067] A session state release message is sent to a session management network element, where the session state release message carries a session state identifier, so that the session management network element releases session state information corresponding to the session state identifier.

[0068] During the terminal's mobility registration update process, when the Access and Mobility Management Function (AMF) in the core network sends a session state release message to the Session Management Function (SMF), the session state release message carries a session state identifier, triggering the SMF to release the session state information corresponding to the session state identifier. The session state identifier carried in the session state release message includes the session state identifier determined according to the customized policy of the target data network and the session state identifier of the session state information to be released as specified in the communication protocol.

[0069] In this embodiment of the present invention, the customized policy of the target data network is used to indicate the service access policy of the terminal in the target data network. For example, when a terminal enters tracking area B from tracking area A, the data network corresponding to tracking area A is DNNA, and the data network corresponding to tracking area B is DNNB. DNNB is the target data network in this embodiment of the present invention, and DNNA is the access network the terminal accessed before performing a mobility registration update, i.e., the current data network in this embodiment of the present invention. After the terminal registration is updated to the target data network DNNB, if the customized policy of DNNB is to release the session status information corresponding to the current data network, it means that the terminal needs to release the session status information corresponding to DNNA in tracking area B, and establish a new session bearer in DNNB, and access the service through DNNB. The session status identifier includes the identifier of the session status information corresponding to DNNA, prompting the SMF to release the session bearer corresponding to the terminal in DNNA, so that the terminal can establish a new session bearer after the registration is updated to DNNB; if the customized policy of DNNA is to retain the session status information corresponding to the current data network, it means that the terminal needs to continue to retain the session status information corresponding to DNNA in tracking area B, and access the service through DNNA, without establishing a new session bearer in DNNB, then the session status identifier only includes the session status identifier of the session status information that needs to be released as specified in the communication protocol.

[0070] It should be noted that in the prior art, after the SMF releases the session state information, it is necessary to send a release notification message to the terminal. Different from the prior art, in the implementation of the present invention, when the SMF releases the session state information, it only needs to return a session state release notification message to the AMF, without notifying the terminal, thus saving the paging process for the terminal and reducing the network load.

[0071] In an optional embodiment of the present invention, the registration acceptance message also carries the tracking area identifier corresponding to the target data network, so that the terminal re-sends a registration update request to the 5G core network when the current tracking area of the terminal does not match the tracking area identifier corresponding to the target data network.

[0072] Taking the example of a terminal moving between tracking areas A and B, according to the existing process, when the terminal enters tracking area B from tracking area A and initiates a registration update request to the data network corresponding to tracking area B, the core network returns a registration request acceptance message to the terminal, carrying the tracking area identifiers of both tracking area A and tracking area B. In this case, if the terminal leaves tracking area B and reenters tracking area A, the terminal will no longer initiate a registration update request to the core network. In other words, as long as the terminal moves between tracking areas A and B, it will no longer initiate a mobility registration update. The core network will not know which tracking area the terminal is currently in, and will be unable to perform real-time tracking and management of the terminal.

[0073] In this regard, an embodiment of the present invention provides an improved solution. When the terminal initiates a registration update request for the target data network, the registration acceptance message returned by the core network to the terminal only carries the tracking area identifier corresponding to the target data network. Once the terminal leaves the tracking area identifier corresponding to the target data network, that is, the current tracking area where the terminal is located does not match the tracking area identifier corresponding to the target data network, the terminal needs to re-send a registration update request to the core network to start a new round of mobility registration update, so as to facilitate the core network to perform real-time tracking and management of the terminal.

[0074] In an optional embodiment of the present invention, before configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network in step 103, the method further includes:

[0075] Step S21: Locally configure the customized policy of the target data network; or,

[0076] Step S22: Obtain the customized policy of the target data network from other network elements of the 5G core network, where the other network elements include any one of a session management network element and a policy control function network element.

[0077] In an embodiment of the present invention, the customized policy of the target data network can be configured locally by the AMF, or by other network elements of the 5G core network, such as SMF and PCF. The AMF obtains the customized policy of the target data network from other network elements to improve the flexibility of the customized policy configuration.

[0078] In an optional embodiment of the present invention, the target data network includes a target railway bureau network, and the terminal includes a control terminal of a train.

[0079] The service access method provided by the embodiment of the present invention can be applied to any mobility registration update scenario, and can also be used in railway systems. When a train travels across railway bureaus, the service access method provided by the embodiment of the present invention can be used to switch the service access point of the train's control terminal.

[0080] As an example, see Figure 3 , showing a schematic diagram of a service access process provided by an embodiment of the present invention. Taking the case where the terminal enters tracking area B from tracking area A as an example, the data network corresponding to tracking area A is DNNA, the data network corresponding to tracking area B is DNNB, the target data network is DNNB, and the access network of the terminal before performing mobility registration update is DNNA, that is, the current data network is DNNA. When the terminal UE enters tracking area B and terminal B is in idle state, the UE sends a registration update request to the base station (R)AN corresponding to tracking area B, and the (R)AN forwards the registration update request to the AMF on the core network side. Among them, when forwarding the registration update request of the UE, the (R)AN also sends the initial information of the UE in the target data network DNNB to the AMF, so that the AMF performs security authentication on the UE based on the received information.

[0081] When the AMF completes security authentication for the UE and determines that the terminal's security authentication has passed, the associated session state parameters are set according to the customized policy of the target data network DNNB. Specifically, if the customized policy of DNNB is to release the session state information corresponding to the current data network, the session state parameters of DNNB are configured to the first state value; if the customized policy of DNNB is to retain the session state information corresponding to the current data network, the session state parameters of DNNB are configured to the second state value.

[0082] Then, the AMF returns a registration acceptance message to the UE, which carries the session status parameters of the DNNB and the tracking area identifier of the DNNB. The terminal determines the service access mode in the tracking area B based on the session status parameters of the DNNB. Specifically, if the session status parameter of the DNNB is the first state value, the service access mode of the terminal in the tracking area B is the local routing access mode, and service access is performed through the DNNB; if the session status parameter of the DNNB is the second state value, the service access mode of the terminal in the tracking area B is the home routing access mode, and service access is performed through the current data network DNNA. The specific service access process can refer to the local routing service architecture and the home routing service architecture in the protocol TS23.502, and the embodiment of the present invention does not make specific limitations on this.

[0083] If the UE leaves tracking area B, that is, the tracking area where the terminal is currently located does not match the tracking area identifier of tracking area B, the terminal re-initiates a registration update request in the current tracking area to perform a new round of mobility registration update.

[0084] Finally, the AMF and SMF execute the terminal's session state information release process. In the embodiment of the present invention, the release of the session state information can be completed only through the interaction between the AMF and SMF, without the need to paging the UE, thereby reducing the network load.

[0085] To summarize, the embodiment of the present invention configures the session state parameters of the target data network according to the customized policy of the target data network in response to the registration update request sent by the terminal, so that the terminal determines the service access mode and performs service access according to the session state parameters of the target data network, thereby realizing the switching of the service access point after the terminal enters the target data network in the 5G network.

[0086] Reference Figure 4 , which shows a flowchart of specific steps of another service access method provided by an embodiment of the present invention. The method is applied to a terminal and specifically includes the following steps:

[0087] Step 201: When the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state, a registration update request is sent to the 5G core network.

[0088] Step 202: Receive a registration acceptance message returned by the 5G core network in response to the registration update request. The registration acceptance message is sent by the 5G core network when it determines that the security authentication of the terminal has passed. The registration acceptance message carries the session status parameters corresponding to the target data network.

[0089] Step 203: Determine a service access mode in the target data network according to the session state parameters, and perform service access according to the determined service access mode.

[0090] The target data network is the data network corresponding to the tracking area that the terminal has newly entered. A tracking area is the geographical area covered by a data network when the network is deployed. For example, if a data network is deployed according to urban areas, each city such as Beijing, Xi'an, and Jinan is a tracking area; or, if a data network is deployed according to provinces, each province is a tracking area. Of course, data networks can also be deployed in other ways, which are not specifically limited in the embodiments of the present invention. Each tracking area corresponds to a data network. When a terminal leaves the current tracking area and enters another tracking area, a mobility registration update is required.

[0091] For example, when a terminal enters tracking area B from tracking area A, the target data network is the data network corresponding to tracking area B. When the terminal enters tracking area B and is in the idle state (CM-IDLE), it has not yet established a signaling connection with the core network. In this case, the terminal can establish a signaling connection with the core network by sending a registration update request to the core network.

[0092] After receiving the registration update request from the terminal, the core network further authenticates the terminal and, if successful, returns a registration acceptance message. This message carries the session state parameters corresponding to the target data network. Based on the received session state parameters, the terminal determines the service access mode on the target data network and, based on the determined service access mode, switches the service access point on the target data network.

[0093] In an optional embodiment of the present invention, the determining of the service access mode in the target data network according to the session state parameter in step 203 includes:

[0094] Step P11: If the session state parameter is the first state value, releasing the session state information of the current data network, and determining that the service access mode in the target data network is the local grooming access mode;

[0095] Step P12: If the session state parameter is the second state value, retain the session state information of the current data network, and determine that the service access mode in the target data network is the home routing access mode.

[0096] Among them, the current data network is the data network accessed by the terminal before the mobility registration is updated. Taking the terminal entering tracking area B from tracking area A as an example, if the data network accessed by the terminal before the mobility registration is updated is the data network corresponding to tracking area A, then the current data network of the terminal is the data network of tracking area A.

[0097] The session state parameters in the embodiment of the present invention are configured by the core network based on the customized policy of the target data network. Each data network corresponds to a customized policy, and each customized policy corresponds to a service access mode. After the terminal receives the registration acceptance message returned by the core network, if the session state parameter carried in the registration acceptance message is a first state value, the terminal will release the session state information of the current data network and determine the service access mode as the local grooming access mode; if the session state parameter carried in the registration acceptance message is a second state value, the terminal will retain the session limit information of the current data network and determine the service access mode as the home routing access mode.

[0098] In an optional embodiment of the present invention, performing service access according to the determined service access mode in step 203 includes:

[0099] Step P21: If it is determined that the service access mode in the target data network is the local grooming access mode, then access the service through the target data network;

[0100] Step P22: If it is determined that the service access mode in the target data network is the home routing access mode, service access is performed through the current data network.

[0101] In this embodiment of the present invention, there are two service access modes: local grooming access mode and home routing access mode. If the service access mode is local grooming access mode, the terminal accesses the service through the target data network; if the service access mode is home routing access mode, the terminal accesses the service through the current data network. The specific service access process can be found in the local grooming service architecture and home routing service architecture in protocol TS23.502, and is not specifically limited in this embodiment of the present invention.

[0102] In an optional embodiment of the present invention, the registration accept message further carries a tracking area identifier corresponding to the target data network, and the method further includes:

[0103] If the current tracking area of the terminal does not match the tracking area identifier corresponding to the target data network, a registration update request is resent to the 5G core network.

[0104] In an embodiment of the present invention, the registration acceptance message returned by the core network to the terminal only carries the tracking area identifier corresponding to the target data network. Once the terminal leaves the tracking area identifier corresponding to the target data network, that is, the current tracking area where the terminal is located does not match the tracking area identifier corresponding to the target data network, the terminal needs to re-send a registration update request to the core network to start a new round of mobility registration update, so as to facilitate the core network to perform real-time tracking and management of the terminal.

[0105] In an optional embodiment of the present invention, the target data network includes a target railway bureau network, and the terminal includes a control terminal of a train.

[0106] The service access method provided by the embodiment of the present invention can be applied to any mobility registration update scenario, and can also be used in railway systems. When a train travels across railway bureaus, the service access method provided by the embodiment of the present invention can be used to switch the service access point of the train's control terminal.

[0107] To summarize, in an embodiment of the present invention, after the terminal enters the tracking area corresponding to the target data network, a registration update request is sent to the core network, and the service access mode is determined based on the session state parameters carried in the registration acceptance message returned by the core network. Then, service access is performed in the target data network according to the determined service access mode, thereby realizing switching of the service access point after the terminal enters the target data network in the 5G network.

[0108] It should be noted that the technical solution provided in the embodiment of the present invention can be applicable to a variety of systems, especially 5G systems. For example, applicable systems may be global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, long term evolution advanced (LTE-A) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new radio (NR) systems, etc. These various systems include terminal devices and network devices. The system may also include core network parts, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

[0109] Example 2

[0110] Reference Figure 5 , which shows a structural diagram of a device provided in Embodiment 3 of the present invention, wherein the device is applied to a 5G core network and specifically includes:

[0111] The memory 500 is used to store computer programs.

[0112] The transceiver 510 is configured to receive and send data under the control of the processor 520 .

[0113] The processor 520 is configured to read the computer program in the memory 500 and perform the following operations:

[0114] A11. Receive a registration update request from a terminal, where the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and is in an idle state;

[0115] A12. Perform security authentication on the terminal;

[0116] A13. When it is determined that the terminal passes security authentication, configure session state parameters corresponding to the target data network according to the customized policy of the target data network;

[0117] A14. Return a registration accept message corresponding to the registration update request to the terminal, where the registration accept message carries a session state parameter corresponding to the target data network, so that the terminal determines a service access mode in the target data network according to the session state parameter.

[0118] In an optional embodiment of the present invention, configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network includes:

[0119] If the customized policy of the target data network is to release the session state information corresponding to the current data network, configuring the session state parameter corresponding to the target data network to a first state value, the first state value is used to instruct the terminal to release the session state information of the current data network, and determining the service access mode to be the local grooming access mode;

[0120] If the customized policy of the target data network is to retain the session state information corresponding to the current data network, the session state parameter corresponding to the target data network is configured to be a second state value, and the second state value is used to instruct the terminal to retain the session state information of the current data network and determine that the service access mode is the home routing access mode.

[0121] In an optional embodiment of the present invention, the processor 520 is further configured to read the computer program in the memory 500 and perform the following operations:

[0122] A session state release message is sent to a session management network element, where the session state release message carries a session state identifier, so that the session management network element releases session state information corresponding to the session state identifier.

[0123] In an optional embodiment of the present invention, the registration acceptance message also carries the tracking area identifier corresponding to the target data network, so that the terminal re-sends the registration update to the 5G core network when the current tracking area of the terminal does not match the tracking area identifier corresponding to the target data network.

[0124] In an optional embodiment of the present invention, the processor 520 is further configured to read the computer program in the memory 500 and perform the following operations:

[0125] Locally configuring a customized policy for the target data network; or,

[0126] Obtain the customized policy of the target data network from other network elements of the 5G core network, wherein the other network elements include any one of a session management network element and a policy control function network element.

[0127] In an optional embodiment of the present invention, the target data network includes a target railway bureau network, and the terminal includes a control terminal of a train.

[0128] Among them, Figure 5 In the embodiment, the bus interface is an interface of a bus architecture, which may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 520 and various circuits of the memory represented by the memory 500. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 510 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. The processor 520 is responsible for managing the bus architecture and general processing, and the memory 500 may store data used by the processor 520 when performing operations.

[0129] The processor 520 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0130] It should be noted here that the above-mentioned device provided by the embodiment of the present invention can implement all the method steps implemented by the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0131] Reference Figure 6 , shows a structural diagram of another device provided in Embodiment 2 of the present invention, wherein the device is applied to a terminal and specifically includes:

[0132] The user interface 600 is used to receive user behavior data.

[0133] The memory 610 is used to store computer programs.

[0134] The transceiver 620 is configured to receive and send data under the control of the processor 630 .

[0135] The processor 630 is configured to read the computer program in the memory 610 and perform the following operations:

[0136] B11. When the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state, sending a registration update request to the 5G core network;

[0137] B12. Receive a registration accept message returned by the 5G core network in response to the registration update request, where the registration accept message is sent by the 5G core network after determining that security authentication of the terminal has passed, and carries a session state parameter corresponding to the target data network;

[0138] B13. Determine a service access mode in the target data network according to the session state parameters, and perform service access according to the determined service access mode.

[0139] In an optional embodiment of the present invention, determining the service access mode in the target data network according to the session state parameter includes:

[0140] If the session state parameter is the first state value, releasing the session state information of the current data network, and determining that the service access mode in the target data network is the local grooming access mode;

[0141] If the session state parameter is the second state value, the session state information of the current data network is retained, and the service access mode in the target data network is determined to be the home routing access mode.

[0142] In an optional embodiment of the present invention, performing service access according to the determined service access mode includes:

[0143] If it is determined that the service access mode in the target data network is the local grooming access mode, performing service access through the target data network;

[0144] If it is determined that the service access mode in the target data network is the home routing access mode, service access is performed through the current data network.

[0145] In an optional embodiment of the present invention, the registration accept message further carries a tracking area identifier corresponding to the target data network, and the processor 630 is further configured to read the computer program in the memory 610 and perform the following operations:

[0146] If the current tracking area of the terminal does not match the tracking area identifier corresponding to the target data network, a registration update request is resent to the 5G core network.

[0147] In an optional embodiment of the present invention, the target data network includes a target railway bureau network, and the terminal includes a control terminal of a train.

[0148] Among them, Figure 6 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 630 and memory represented by memory 610. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 620 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 600 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0149] The processor 630 is responsible for managing the bus architecture and general processing, and the memory 610 can store data used by the processor 630 when performing operations.

[0150] Optionally, the processor 630 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0151] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0152] It should be noted here that the above-mentioned device provided by the embodiment of the present invention can implement all the method steps implemented by the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0153] Example 3

[0154] Reference Figure 7 , which shows a structural diagram of a service access device provided in Embodiment 3 of the present invention, the device is applied to a 5G core network, and specifically includes:

[0155] The registration update request receiving module 701 is configured to receive a registration update request from a terminal, wherein the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and the terminal is in an idle state;

[0156] A security authentication module 702 is used to perform security authentication on the terminal;

[0157] The session state parameter configuration module 703 is used to configure the session state parameters corresponding to the target data network according to the customized policy of the target data network when it is determined that the security authentication of the terminal has passed;

[0158] The registration acceptance message sending module 704 is used to return a registration acceptance message corresponding to the registration update request to the terminal, and the registration acceptance message carries the session state parameters corresponding to the target data network, so that the terminal determines the service access mode in the target data network according to the session state parameters.

[0159] In an optional embodiment of the present invention, the session state parameter configuration module 703 includes:

[0160] a first state value configuration submodule, configured to, if the customized policy of the target data network is to release the session state information corresponding to the current data network, configure the session state parameter corresponding to the target data network to a first state value, wherein the first state value is used to instruct the terminal to release the session state information of the current data network and determine that the service access mode is a local grooming access mode;

[0161] The second state value configuration submodule is used to configure the session state parameter corresponding to the target data network to a second state value if the customization policy of the target data network is to retain the session state information corresponding to the current data network. The second state value is used to instruct the terminal to retain the session state information of the current data network and determine that the service access mode is the home routing access mode.

[0162] In an optional embodiment of the present invention, the device further includes:

[0163] The session state release message sending module is used to send a session state release message to the session management network element, wherein the session state release message carries a session state identifier, so that the session management network element releases the session state information corresponding to the session state identifier.

[0164] In an optional embodiment of the present invention, the registration acceptance message also carries the tracking area identifier corresponding to the target data network, so that the terminal re-sends the registration update to the 5G core network when the current tracking area of the terminal does not match the tracking area identifier corresponding to the target data network.

[0165] In an optional embodiment of the present invention, the device further includes:

[0166] a customized policy configuration module, configured to locally configure the customized policy of the target data network; or

[0167] A customized policy acquisition module is used to obtain the customized policy of the target data network from other network elements of the 5G core network, and the other network elements include any one of a session management network element and a policy control function network element.

[0168] In an optional embodiment of the present invention, the target data network includes a target railway bureau network, and the terminal includes a control terminal of a train.

[0169] Reference Figure 8 , which shows a structural diagram of another service access device provided by Embodiment 3 of the present invention, the device is applied to a terminal and specifically includes:

[0170] The registration update request sending module 801 is configured to send a registration update request to the 5G core network when the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state;

[0171] A registration accept message receiving module 802 is configured to receive a registration accept message returned by the 5G core network in response to the registration update request, where the registration accept message is sent by the 5G core network when it determines that the security authentication of the terminal has passed, and carries a session state parameter corresponding to the target data network;

[0172] The service access module 803 is configured to determine a service access mode in the target data network according to the session state parameters, and perform service access according to the determined service access mode.

[0173] In an optional embodiment of the present invention, the service access module 803 includes:

[0174] a first access mode determination submodule, configured to release the session state information of the current data network if the session state parameter is a first state value, and determine that the service access mode in the target data network is a local grooming access mode;

[0175] The second access mode determination submodule is configured to retain the session state information of the current data network if the session state parameter is a second state value, and determine that the service access mode in the target data network is the home routing access mode.

[0176] In an optional embodiment of the present invention, the service access module 803 includes:

[0177] a local grooming access submodule, configured to perform service access through the target data network if it is determined that the service access mode in the target data network is the local grooming access mode;

[0178] The home routing access submodule is configured to perform service access through the current data network if it is determined that the service access mode in the target data network is the home routing access mode.

[0179] In an optional embodiment of the present invention, the registration accept message further carries a tracking area identifier corresponding to the target data network, and the apparatus further includes:

[0180] The registration update request resending module is used to resend the registration update request to the 5G core network if the current tracking area of the terminal does not match the tracking area identifier corresponding to the target data network.

[0181] In an optional embodiment of the present invention, the target data network includes a target railway bureau network, and the terminal includes a control terminal of a train.

[0182] It should be noted that the division of modules and units in the embodiments of the present invention is illustrative and represents only a logical functional division. Actual implementation may employ different division methods. Furthermore, the functional modules and functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically as a separate unit, or two or more units may be integrated into a single unit. These integrated units may be implemented in either hardware or software functional units.

[0183] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0184] It should be noted here that the above-mentioned device provided by the embodiment of the present invention can implement all the method steps implemented by the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0185] An embodiment of the present invention further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the aforementioned method.

[0186] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NANDFLASH), solid-state drives (SSDs)), etc.

[0187] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) that contain computer-usable program code.

[0188] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0189] These processor-executable instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0190] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0191] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A service access method, characterized in that: Applied to a 5G core network, the method includes: receiving a registration update request from a terminal, where the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and the terminal is in an idle state; Performing security authentication on the terminal; When it is determined that the security authentication of the terminal has passed, configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network, including: if the customized policy of the target data network is to release the session state information corresponding to the current data network, configuring the session state parameters corresponding to the target data network to a first state value, the first state value is used to instruct the terminal to release the session state information of the current data network, and determining that the service access mode is a local grooming access mode; if the customized policy of the target data network is to retain the session state information corresponding to the current data network, configuring the session state parameters corresponding to the target data network to a second state value, the second state value is used to instruct the terminal to retain the session state information of the current data network, and determining that the service access mode is a home routing access mode; A registration acceptance message corresponding to the registration update request is returned to the terminal, where the registration acceptance message carries a session state parameter corresponding to the target data network, so that the terminal determines a service access mode in the target data network according to the session state parameter.

2. The method according to claim 1, characterized in that The method further comprises: A session state release message is sent to a session management network element, where the session state release message carries a session state identifier, so that the session management network element releases session state information corresponding to the session state identifier.

3. The method according to claim 1, characterized in that The registration acceptance message also carries the tracking area identifier corresponding to the target data network, so that the terminal re-sends the registration update to the 5G core network when the current tracking area of the terminal does not match the tracking area identifier corresponding to the target data network.

4. The method according to claim 1, wherein Before configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network, the method further includes: Locally configuring a customized policy for the target data network; or, Obtain the customized policy of the target data network from other network elements of the 5G core network, wherein the other network elements include any one of a session management network element and a policy control function network element.

5. The method according to any one of claims 1 to 4, characterized in that: The target data network includes a target railway bureau network, and the terminal includes a control terminal of a train.

6. A service access method, characterized in that: Applied to a terminal, the method includes: When the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state, sending a registration update request to the 5G core network; receiving a registration accept message returned by the 5G core network in response to the registration update request, where the registration accept message is sent by the 5G core network when determining that security authentication of the terminal has passed, and the registration accept message carries a session state parameter corresponding to the target data network; Determining a service access mode in the target data network according to the session state parameter, including: if the session state parameter is a first state value, releasing the session state information of the current data network, and determining that the service access mode in the target data network is a local grooming access mode; if the session state parameter is a second state value, retaining the session state information of the current data network, and determining that the service access mode in the target data network is a home routing access mode; Perform service access according to the determined service access mode.

7. The method according to claim 6, characterized in that The performing service access according to the determined service access mode includes: If it is determined that the service access mode in the target data network is the local grooming access mode, performing service access through the target data network; If it is determined that the service access mode in the target data network is the home routing access mode, service access is performed through the current data network.

8. The method according to any one of claims 6 to 7, characterized in that: The target data network includes a target railway bureau network, and the terminal includes a control terminal of a train.

9. A device for service access, characterized in that: Applied to 5G core network, including memory, transceiver, and processor: a memory for storing computer programs; a transceiver for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: receiving a registration update request from a terminal, where the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and the terminal is in an idle state; Performing security authentication on the terminal; When it is determined that the security authentication of the terminal has passed, configuring the session state parameters corresponding to the target data network according to the customized policy of the target data network, including: if the customized policy of the target data network is to release the session state information corresponding to the current data network, configuring the session state parameters corresponding to the target data network to a first state value, the first state value is used to instruct the terminal to release the session state information of the current data network, and determining that the service access mode is a local grooming access mode; if the customized policy of the target data network is to retain the session state information corresponding to the current data network, configuring the session state parameters corresponding to the target data network to a second state value, the second state value is used to instruct the terminal to retain the session state information of the current data network, and determining that the service access mode is a home routing access mode; A registration acceptance message corresponding to the registration update request is returned to the terminal, where the registration acceptance message carries a session state parameter corresponding to the target data network, so that the terminal determines a service access mode in the target data network according to the session state parameter.

10. A device for service access, characterized in that: Applied to terminals, including memory, transceivers, and processors: a memory for storing computer programs; a transceiver for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: When the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state, sending a registration update request to the 5G core network; receiving a registration accept message returned by the 5G core network in response to the registration update request, where the registration accept message is sent by the 5G core network when determining that security authentication of the terminal has passed, and the registration accept message carries a session state parameter corresponding to the target data network; Determining a service access mode in the target data network according to the session state parameter, including: if the session state parameter is a first state value, releasing the session state information of the current data network, and determining that the service access mode in the target data network is a local grooming access mode; if the session state parameter is a second state value, retaining the session state information of the current data network, and determining that the service access mode in the target data network is a home routing access mode; Perform service access according to the determined service access mode.

11. A service access device, characterized in that: Applied to a 5G core network, the device includes: A registration update request receiving module, configured to receive a registration update request from a terminal, wherein the registration update request is sent when the terminal enters a tracking area corresponding to a target data network and the terminal is in an idle state; A security authentication module, configured to perform security authentication on the terminal; A session state parameter configuration module, configured to configure the session state parameters corresponding to the target data network according to the customized policy of the target data network when it is determined that the security authentication of the terminal has passed, including: a first state value configuration submodule, configured to configure the session state parameter corresponding to the target data network to a first state value if the customized policy of the target data network is to release the session state information corresponding to the current data network, the first state value being used to instruct the terminal to release the session state information of the current data network and determine that the service access mode is a local grooming access mode; a second state value configuration submodule, configured to configure the session state parameter corresponding to the target data network to a second state value if the customized policy of the target data network is to retain the session state information corresponding to the current data network, the second state value being used to instruct the terminal to retain the session state information of the current data network and determine that the service access mode is a home routing access mode; A registration acceptance message sending module is used to return a registration acceptance message corresponding to the registration update request to the terminal, wherein the registration acceptance message carries the session state parameters corresponding to the target data network, so that the terminal determines the service access mode in the target data network according to the session state parameters.

12. A service access device, characterized in that: Applied to a terminal, the device includes: a registration update request sending module, configured to send a registration update request to the 5G core network when the terminal enters the tracking area corresponding to the target data network and the terminal is in an idle state; a registration accept message receiving module, configured to receive a registration accept message returned by the 5G core network in response to the registration update request, wherein the registration accept message is sent by the 5G core network when determining that the security authentication of the terminal has passed, and the registration accept message carries a session state parameter corresponding to the target data network; A service access module, used to determine the service access mode in the target data network based on the session state parameter, and perform service access based on the determined service access mode, including: a first access mode determination submodule, used to release the session state information of the current data network if the session state parameter is a first state value, and determine that the service access mode in the target data network is a local routing access mode; a second access mode determination submodule, used to retain the session state information of the current data network if the session state parameter is a second state value, and determine that the service access mode in the target data network is a home routing access mode.

13. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the service access method according to any one of claims 1 to 5 or 6 to 8.

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