Access management method, access and mobility management node and communication system

Abstract

The invention provides an access management method, an access and mobility management node and a communication system. The access management method comprises the following steps: completing access and registration operations of a user terminal according to a first request sent by the user terminal through a first wireless access point; after notification information used for indicating the user terminal to complete access or registration operation with a second access and mobility management node through a second wireless access point is received, a first frequency combination is determined, and the first frequency combination comprises a first frequency and a second frequency; sending first indication information related to the first frequency to the first wireless access point, so that the user terminal accesses the first wireless access point by using the first frequency; and sending second indication information related to the second frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point by using the second frequency.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and in particular to an access management method, an access and mobility management node, and a communication system. Background Art

[0002] Currently, the ATSSS (Access Traffic Steer Switching Split) feature allows user terminals to access the core network through a 3GPP (3rd Generation Partnership Project) link (for example, through a wireless base station or satellite) and at the same time access the core network through a non-3GPP (such as WIFI (Wireless Fidelity)) link. Summary of the invention

[0003] The inventors have noticed that as satellite access technology matures, user terminals can access the core network through two 3GPP links at the same time to improve network reliability when a single technology does not provide sufficient coverage, and avoid latency issues when switching between different technologies. If the base stations in the two 3GPP links are provided by different manufacturers, there may be a frequency conflict, which will cause serious interference on the two 3GPP links.

[0004] Accordingly, the present disclosure provides an access management solution, which effectively avoids interference generated on the two 3GPP links by controlling the frequencies at which a user terminal accesses two 3GPP links respectively.

[0005] In a first aspect of the present disclosure, an access management method is provided, which is applied to a first access and mobility management node, the method comprising: completing an access and registration operation of a user terminal according to a first request sent by a user terminal through a first wireless access point; after receiving notification information for indicating that the user terminal completes an access or registration operation with a second access and mobility management node through a second wireless access point, determining a first frequency combination used by the user terminal at a current location, wherein the first frequency combination includes a first frequency supported by the first wireless access point and a second frequency supported by the second wireless access point, and the second frequency is different from the first frequency; sending first indication information related to the first frequency to the first wireless access point, so that the user terminal accesses the first wireless access point using the first frequency; and sending second indication information related to the second frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the second frequency.

[0006] In some embodiments, after completing the access and registration operation of the user terminal according to the first request, it is determined whether the user terminal can access the core network through the second wireless access point; if the user terminal can access the core network through the second wireless access point, indication information used to instruct the user terminal to send a second request to the second access and mobility management node through the second wireless access point is sent to the user terminal, wherein the second request is used for the second access and mobility management node to complete the access or registration operation of the user terminal.

[0007] In some embodiments, determining whether the user terminal can access the core network through the second wireless access point includes: determining whether the user terminal can access the core network through the second wireless access point according to the current location of the user terminal or using information provided by a data storage node.

[0008] In some embodiments, determining the first frequency combination used by the user terminal at the current location includes: determining the first frequency combination used by the user terminal at the current location based on any one of pre-configuration information, analysis information provided by the network data analysis node, and frequency information provided by the first wireless access point.

[0009] In some embodiments, the notification information is sent by a data storage node, the user terminal or the second access and mobility management node.

[0010] In some embodiments, first frequency indication information sent by a third wireless access point is received, wherein during a process in which the user terminal switches from the first wireless access point to the third wireless access point, the third wireless access point sends the first frequency indication information without supporting the first frequency; judging whether the first frequency combination can be adjusted to a second frequency combination according to a current location of the user terminal, wherein the second frequency combination includes a third frequency supported by the third wireless access point and a fourth frequency supported by the second wireless access point, and the fourth frequency is different from the third frequency; if the first frequency combination can be adjusted to the second frequency combination, third indication information related to the third frequency is sent to the first wireless access point, so that the user terminal switches from the first wireless access point to the third wireless access point using the third frequency; and fourth indication information related to the fourth frequency is sent to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the fourth frequency.

[0011] In some embodiments, if the first frequency combination cannot be adjusted to the second frequency combination, a failure message is sent to the first wireless access point so that the user terminal reselects a wireless access point.

[0012] In some embodiments, second frequency indication information sent by a fourth wireless access point through the second access and mobility management node is received, wherein during a process in which the user terminal switches from the second wireless access point to the fourth wireless access point, the fourth wireless access point sends the second frequency indication information without supporting the second frequency; judging whether the first frequency combination can be adjusted to a third frequency combination according to a current location of the user terminal, wherein the third frequency combination includes the first frequency and a fifth frequency supported by the fourth wireless access point, and the fifth frequency is different from the first frequency and the second frequency; if the first frequency combination can be adjusted to the third frequency combination, fifth indication information related to the fifth frequency is sent to the second wireless access point through the second access and mobility management node, so that the user terminal switches from the second wireless access point to the fourth wireless access point using the fifth frequency.

[0013] In some embodiments, if the first frequency combination cannot be adjusted to the third frequency combination, a failure message is sent to the second wireless access point via the second access and mobility management node so that the user terminal reselects a wireless access point.

[0014] In a second aspect of the present disclosure, an access and mobility management node is provided, wherein the access and mobility management node is a first access and mobility management node, comprising: a first processing module, configured to complete an access and registration operation of a user terminal according to a first request sent by a user terminal through a first wireless access point; a second processing module, configured to determine a first frequency combination used by the user terminal at a current location after receiving notification information indicating that the user terminal completes an access or registration operation with a second access and mobility management node through a second wireless access point, wherein the first frequency combination includes a first frequency supported by the first wireless access point and a second frequency supported by the second wireless access point, and the second frequency is different from the first frequency; a third processing module, configured to send first indication information related to the first frequency to the first wireless access point, so that the user terminal accesses the first wireless access point using the first frequency; and send second indication information related to the second frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the second frequency.

[0015] In some embodiments, the first processing module is configured to, after completing the access and registration operations of the user terminal according to the first request, determine whether the user terminal can access the core network through the second wireless access point, and if the user terminal can access the core network through the second wireless access point, send indication information used to instruct the user terminal to send a second request to the second access and mobility management node through the second wireless access point to the user terminal, wherein the second request is used for the second access and mobility management node to complete the access or registration operation of the user terminal.

[0016] In some embodiments, the first processing module is configured to determine whether the user terminal can access the core network through the second wireless access point according to the current location of the user terminal or using information provided by a data storage node.

[0017] In some embodiments, the second processing module is configured to determine the first frequency combination used by the user terminal at the current location based on any one of pre-configuration information, analysis information provided by the network data analysis node, and frequency information provided by the first wireless access point.

[0018] In some embodiments, the notification information is sent by a data storage node, the user terminal or the second access and mobility management node.

[0019] In some embodiments, the first processing module is configured to receive first frequency indication information sent by a third wireless access point, wherein during the process of the user terminal switching from the first wireless access point to the third wireless access point, the third wireless access point sends the first frequency indication information without supporting the first frequency; the second processing module is configured to determine whether the first frequency combination can be adjusted to a second frequency combination according to the current location of the user terminal, wherein the second frequency combination includes a third frequency supported by the third wireless access point and a fourth frequency supported by the second wireless access point, and the fourth frequency is different from the third frequency; the third processing module is configured to, if the first frequency combination can be adjusted to the second frequency combination, send third indication information related to the third frequency to the first wireless access point, so that the user terminal switches from the first wireless access point to the third wireless access point using the third frequency, and send fourth indication information related to the fourth frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the fourth frequency.

[0020] In some embodiments, the third processing module is configured to send failure information to the first wireless access point if the first frequency combination cannot be adjusted to the second frequency combination, so that the user terminal reselects a wireless access point.

[0021] In some embodiments, the first processing module is configured to receive second frequency indication information sent by a fourth wireless access point through the second access and mobility management node, wherein during the process of the user terminal switching from the second wireless access point to the fourth wireless access point, the fourth wireless access point sends the second frequency indication information without supporting the second frequency; the second processing module is configured to determine whether the first frequency combination can be adjusted to a third frequency combination according to the current location of the user terminal, wherein the third frequency combination includes the first frequency and a fifth frequency supported by the fourth wireless access point, and the fifth frequency is different from the first frequency and the second frequency; the third processing module is configured to send fifth indication information related to the fifth frequency to the second wireless access point through the second access and mobility management node if the first frequency combination can be adjusted to the third frequency combination, so that the user terminal switches from the second wireless access point to the fourth wireless access point using the fifth frequency.

[0022] In some embodiments, the third processing module is configured to send failure information to the second wireless access point through the second access and mobility management node if the first frequency combination cannot be adjusted to the third frequency combination, so that the user terminal reselects a wireless access point.

[0023] In a third aspect of the present disclosure, an access and mobility management node is provided, comprising: a memory; and a processor, coupled to the memory, the processor being configured to execute a method as described in any of the above embodiments based on instructions stored in the memory.

[0024] In a fourth aspect of the present disclosure, a communication system is provided, including: a first access and mobility management node, the first access and mobility management node being the access and mobility management node described in any one of the above embodiments; and a user terminal, configured to send a first request for requesting the first access and mobility management node to complete an access and registration operation to the first access and mobility management node through a first wireless access point, send a second request for requesting a second access and mobility management node to complete an access or registration operation to the second access and mobility management node through a second wireless access point, access the first wireless access point using the first frequency according to first indication information related to a first frequency sent by the first access and mobility management node through the first wireless access point, and access the second wireless access point using the second frequency according to second indication information related to a second frequency sent by the first access and mobility management node through the second access and mobility management node and the second wireless access point.

[0025] In some embodiments, after sending the first request, the user terminal is configured to send the second request to the second wireless access point if it is determined according to pre-configuration information that the second wireless access point can be accessed.

[0026] In some embodiments, the user terminal is configured to send the second request to the second wireless access point upon receiving indication information sent by the first access and mobility management node to instruct sending the second request.

[0027] In some embodiments, the above system further includes: a data storage node configured to send notification information to the first access and mobility management node after receiving indication information that the second access and mobility management node completes the access or registration operation of the user terminal.

[0028] In some embodiments, the system further includes: a third wireless access point, configured to send first frequency indication information to the first access and mobility management node when the user terminal switches from the first wireless access point to the third wireless access point and the third wireless access point does not support the first frequency; the first wireless access point is configured to send third indication information related to the third frequency sent by the first access and mobility management node to the user terminal; the second wireless access point is configured to send fourth indication information related to the fourth frequency sent by the first access and mobility management node through the second access and mobility management node to the user terminal; the user terminal is configured to switch from the first wireless access point to the third wireless access point using the third frequency, and access the second wireless access point using the fourth frequency.

[0029] In some embodiments, the first wireless access point is further configured to send failure information sent by the first access and mobility management node to the user terminal; and the user terminal is configured to reselect a wireless access point according to the failure information.

[0030] In some embodiments, the system further includes: a fourth wireless access point, configured to send second frequency indication information to the first access and mobility management node through the second access and mobility management node when the user terminal switches from the second wireless access point to the fourth wireless access point and the fourth wireless access point does not support the second frequency; the second wireless access point is configured to send fifth indication information related to the fifth frequency sent by the first access and mobility management node through the second access and mobility management node to the user terminal; and the user terminal is configured to switch from the second wireless access point to the fourth wireless access point using the fifth frequency.

[0031] In some embodiments, the second wireless access point is configured to send failure information sent by the first access and mobility management node through the second access and mobility management node to the user terminal; and the user terminal is configured to reselect a wireless access point according to the failure information.

[0032] According to a fifth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the method described in any of the above embodiments is implemented.

[0033] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A schematic diagram of a flow chart of an access management method according to an embodiment of the present disclosure;

[0036] Figure 2 A schematic diagram of the structure of an access and mobility management node according to an embodiment of the present disclosure;

[0037] Figure 3A schematic diagram of the structure of an access and mobility management node according to another embodiment of the present disclosure;

[0038] Figure 4 A schematic diagram of the structure of a communication system according to an embodiment of the present disclosure;

[0039] Figure 5 A schematic diagram of the structure of a communication system according to another embodiment of the present disclosure;

[0040] Figure 6 A schematic diagram of the structure of a communication system according to another embodiment of the present disclosure;

[0041] Figure 7 A schematic diagram of the structure of a communication system according to another embodiment of the present disclosure;

[0042] Figure 8 A schematic diagram of the structure of a communication system according to another embodiment of the present disclosure;

[0043] Fig. 9 A schematic diagram of the structure of a communication system according to another embodiment of the present disclosure;

[0044] Fig.10 A schematic diagram of the structure of a communication system according to another embodiment of the present disclosure;

[0045] Fig.11 A flowchart of an access management method according to another embodiment of the present disclosure;

[0046] Fig.12 A flowchart of an access management method according to another embodiment of the present disclosure;

[0047] Fig.13 The present invention is a flowchart of an access management method according to another embodiment of the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0049] Unless specifically stated otherwise, the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0050] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0051] Technologies, methods, and apparatus known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, such technologies, methods, and apparatus should be considered part of the authorization specification.

[0052] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0053] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0054] Figure 1 The following is a flow chart of an access management method according to an embodiment of the present disclosure. In some embodiments, the following access management method is executed by a first access and mobility management node.

[0055] In step 101, access and registration operations of a user terminal are completed according to a first request sent by the user terminal through a first wireless access point.

[0056] In step 102, after receiving notification information indicating that the user terminal completes an access or registration operation with the second access and mobility management node through the second wireless access point, a first frequency combination used by the user terminal at the current location is determined, wherein the first frequency combination includes a first frequency supported by the first wireless access point and a second frequency supported by the second wireless access point, and the second frequency is different from the first frequency.

[0057] In some embodiments, the notification information is sent by a data storage node, a user terminal or a second access and mobility management node.

[0058] It should be noted here that the user terminal sends a second request to the second access and mobility management node through the second wireless access point, and the second access and mobility management node completes the access or registration operation of the user terminal according to the second request. After receiving the indication information that the second access and mobility management node completes the access or registration operation of the user terminal, the data storage node (for example, UDM (Unified Data Management) node or UDR (Unified Data Repository)) sends notification information to the first access and mobility management node.

[0059] In some embodiments, after completing the access and registration operation of the user terminal according to the first request, it is determined whether the user terminal can access the core network through the second wireless access point. If the user terminal can access the core network through the second wireless access point, the instruction information for instructing the user terminal to send the second request to the second access and mobility management node through the second wireless access point is sent to the user terminal. For example, the instruction information for instructing the user terminal to send the second request is sent to the user terminal through the first wireless access point.

[0060] In some embodiments, it is determined whether the user terminal can access the core network through the second wireless access point according to the current location of the user terminal or using information provided by the data storage node.

[0061] In some embodiments, after sending the first request, the user terminal sends a second request to the second wireless access point if it is determined according to the pre-configuration information that the second wireless access point can be accessed.

[0062] In some embodiments, a first frequency combination used by the user terminal at the current location is determined based on any one of preconfiguration information, analysis information provided by the network data analysis node, and frequency information provided by the first wireless access point.

[0063] In step 103, first indication information related to the first frequency is sent to the first wireless access point, so that the user terminal accesses the first wireless access point using the first frequency.

[0064] For example, the first wireless access point sends first indication information related to the first frequency to the user terminal, so that the user terminal accesses the first wireless access point using the first frequency.

[0065] In step 104, second indication information related to the second frequency is sent to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the second frequency.

[0066] For example, the second wireless access point sends second indication information related to the second frequency to the user terminal, so that the user terminal accesses the second wireless access point using the second frequency.

[0067] In the access management method provided in the above embodiment of the present disclosure, by allocating frequencies for accessing the first wireless access point and the second wireless access point to the user terminal, it is ensured that when the user terminal accesses two links, interference on the two links is effectively avoided.

[0068] In some embodiments, when a user terminal accesses a first wireless access point and a second wireless access point at the same time, if the location of the user terminal changes, the user terminal may access a new wireless access point.

[0069] For example, a user terminal uses a first frequency to access a first wireless access point and uses a second frequency to access a second wireless access point. Due to a change in the location of the user terminal, the user terminal switches from the first wireless access point to a third wireless access point. In this process, since the third wireless access point does not support the first frequency used by the user terminal to access the first wireless access point, the third wireless access point sends first frequency indication information to the first access and mobility management node. The first access and mobility management node performs the following processing.

[0070] 1) Receive first frequency indication information sent by a third wireless access point.

[0071] 2) According to the current location of the user terminal, determine whether the first frequency combination can be adjusted to a second frequency combination, wherein the second frequency combination includes a third frequency supported by the third wireless access point and a fourth frequency supported by the second wireless access point, and the fourth frequency is different from the third frequency.

[0072] For example, the first access and mobility management node determines the second frequency combination used by the user terminal at the current location according to any one of the pre-configuration information, the analysis information provided by the network data analysis node, and the frequency information provided by the second wireless access point.

[0073] 3) If the first frequency combination can be adjusted to the second frequency combination, third indication information related to the third frequency is sent to the first wireless access point, so that the user terminal accesses the third wireless access point using the third frequency, thereby implementing switching from the first wireless access point to the third wireless access point.

[0074] For example, the first wireless access point sends third indication information related to the third frequency to the user terminal, so that the user terminal accesses the third wireless access point using the third frequency.

[0075] 4) Sending fourth indication information related to the fourth frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the fourth frequency.

[0076] For example, the second wireless access point sends fourth indication information related to the fourth frequency to the user terminal, so that the user terminal accesses the second wireless access point using the fourth frequency.

[0077] Thus, before the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the second wireless access point. After the location of the user terminal changes, the user terminal simultaneously accesses the third wireless access point and the second wireless access point.

[0078] In some embodiments, if the first frequency combination cannot be adjusted to the second frequency combination, the first access and mobility management node sends a failure message to the first wireless access point so that the user terminal reselects a wireless access point.

[0079] For another example, a user terminal uses a first frequency to access a first wireless access point and uses a second frequency to access a second wireless access point. Due to a change in the location of the user terminal, the user terminal switches from the second wireless access point to a fourth wireless access point. In this process, since the fourth wireless access point does not support the second frequency used by the user terminal to access the second wireless access point, the fourth wireless access point sends second frequency indication information to the first access and mobility management node through the second access and mobility management node. The first access and mobility management node performs the following processing.

[0080] 1) Receive second frequency indication information sent by a fourth wireless access point through a second access and mobility management node.

[0081] 2) According to the current location of the user terminal, determine whether the first frequency combination can be adjusted to a third frequency combination, wherein the third frequency combination includes the first frequency and a fifth frequency supported by the fourth wireless access point, and the fifth frequency is different from the first frequency and the second frequency.

[0082] For example, the first access and mobility management node determines the third frequency combination used by the user terminal at the current location according to any one of the pre-configuration information, the analysis information provided by the network data analysis node, and the frequency information provided by the first wireless access point.

[0083] 3) If the first frequency combination can be adjusted to the third frequency combination, fifth indication information related to the fifth frequency is sent to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the fourth wireless access point using the fifth frequency, thereby achieving switching from the second wireless access point to the fourth wireless access point.

[0084] For example, the second wireless access point sends fifth indication information related to the fifth frequency to the user terminal, so that the user terminal accesses the fourth wireless access point using the fifth frequency.

[0085] Thus, before the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the second wireless access point. After the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the fourth wireless access point.

[0086] In some embodiments, if the first frequency combination cannot be adjusted to the third frequency combination, the first access and mobility management node sends failure information to the second wireless access point through the second access and mobility management node so that the user terminal reselects a wireless access point.

[0087] Figure 2 FIG. 1 is a schematic diagram of the structure of an access and mobility management node according to an embodiment of the present disclosure. Figure 2 As shown, the access and mobility management node includes a first processing module 21 , a second processing module 22 and a third processing module 23 .

[0088] The first processing module 21 is configured to complete access and registration operations of the user terminal according to a first request sent by the user terminal through the first wireless access point in the first process.

[0089] In some embodiments, after completing the access and registration operation of the user terminal according to the first request, the first processing module 21 determines whether the user terminal can access the core network through the second wireless access point. If the user terminal can access the core network through the second wireless access point, the first processing module 21 sends the instruction information for instructing the user terminal to send the second request to the second access and mobility management node through the second wireless access point to the user terminal, wherein the second request is used for the second access and mobility management node to complete the access or registration operation of the user terminal. For example, the first processing module 21 sends the instruction information for instructing the user terminal to send the second request to the user terminal through the first wireless access point, so that the user terminal sends the second request to the second access and mobility management node through the second wireless access point.

[0090] In some embodiments, the first processing module 21 determines whether the user terminal can access the core network through the second wireless access point according to the current location of the user terminal or using information provided by a data storage node (eg, UDM or UDR).

[0091] In some embodiments, after sending the first request, the user terminal sends a second request to the second access and mobility management node through the second wireless access point if it is determined according to the pre-configuration information that the second wireless access point can be accessed.

[0092] The second processing module 22 is configured to determine a first frequency combination used by the user terminal at a current location after receiving notification information indicating that the user terminal completes an access or registration operation with the second access and mobility management node through the second wireless access point, wherein the first frequency combination includes a first frequency supported by the first wireless access point and a second frequency supported by the second wireless access point, and the second frequency is different from the first frequency.

[0093] In some embodiments, the notification information is sent by a data storage node, the user terminal or the second access and mobility management node.

[0094] In some embodiments, the second processing module 22 determines the first frequency combination used by the user terminal at the current location according to any one of the pre-configuration information, the analysis information provided by the network data analysis node, and the frequency information provided by the first wireless access point.

[0095] The third processing module 23 is configured to send first indication information related to the first frequency to the first wireless access point, so that the user terminal accesses the first wireless access point using the first frequency; and send second indication information related to the second frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the second frequency.

[0096] For example, the first wireless access point sends first indication information related to the first frequency to the user terminal so that the user terminal accesses the first wireless access point using the first frequency. The second wireless access point sends second indication information related to the second frequency to the user terminal so that the user terminal accesses the second wireless access point using the second frequency.

[0097] In some embodiments, when a user terminal accesses a first wireless access point and a second wireless access point at the same time, if the location of the user terminal changes, the user terminal may access a new wireless access point.

[0098] For example, a user terminal uses a first frequency to access a first wireless access point and uses a second frequency to access a second wireless access point. Due to a change in the location of the user terminal, the user terminal switches from the first wireless access point to a third wireless access point. In this process, since the third wireless access point does not support the first frequency used by the user terminal to access the first wireless access point, the third wireless access point sends first frequency indication information to the first access and mobility management node. The first processing module 21, the second processing module 22, and the third processing module 23 in the first access and mobility management node perform the following operations.

[0099] The first processing module 21 is configured to receive first frequency indication information sent by the third wireless access point.

[0100] The second processing module 22 is configured to determine whether the first frequency combination can be adjusted to a second frequency combination according to the current location of the user terminal, wherein the second frequency combination includes a third frequency supported by the third wireless access point and a fourth frequency supported by the second wireless access point, and the fourth frequency is different from the third frequency.

[0101] For example, the second processing module 22 determines the second frequency combination used by the user terminal at the current location according to any one of the pre-configuration information, the analysis information provided by the network data analysis node, and the frequency information provided by the second wireless access point.

[0102] The third processing module 23 is configured to send third indication information related to the third frequency to the first wireless access point if the first frequency combination can be adjusted to the second frequency combination, so that the user terminal accesses the third wireless access point using the third frequency, so as to implement switching from the first wireless access point to the third wireless access point. In addition, the third processing module 23 sends fourth indication information related to the fourth frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the fourth frequency.

[0103] Thus, before the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the second wireless access point. After the location of the user terminal changes, the user terminal simultaneously accesses the second wireless access point and the third wireless access point.

[0104] In some embodiments, if the first frequency combination cannot be adjusted to the second frequency combination, the third processing module 23 sends a failure message to the first wireless access point so that the user terminal reselects a wireless access point.

[0105] For another example, a user terminal uses a first frequency to access a first wireless access point and uses a second frequency to access a second wireless access point. Due to a change in the location of the user terminal, the user terminal switches from the second wireless access point to a fourth wireless access point. In this process, since the fourth wireless access point does not support the second frequency used by the user terminal to access the second wireless access point, the fourth wireless access point sends the second frequency indication information to the first access and mobility management node through the second access and mobility management node. The first processing module 21, the second processing module 22, and the third processing module 23 in the first access and mobility management node perform the following operations.

[0106] The first processing module 21 is configured to receive second frequency indication information sent by the fourth wireless access point through the second access and mobility management node.

[0107] The second processing module 22 is configured to determine whether the first frequency combination can be adjusted to a third frequency combination according to the current location of the user terminal, wherein the third frequency combination includes the first frequency and a fifth frequency supported by the fourth wireless access point, and the fifth frequency is different from the first frequency and the second frequency.

[0108] For example, the second processing module 22 determines the third frequency combination used by the user terminal at the current location according to any one of the pre-configuration information, the analysis information provided by the network data analysis node, and the frequency information provided by the first wireless access point.

[0109] The third processing module 23 is configured to send fifth indication information related to the fifth frequency to the second wireless access point through the second access and mobility management node if the first frequency combination can be adjusted to the third frequency combination, so that the user terminal accesses the fourth wireless access point using the fifth frequency to achieve switching from the second wireless access point to the fourth wireless access point.

[0110] Thus, before the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the second wireless access point. After the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the fourth wireless access point.

[0111] In some embodiments, if the first frequency combination cannot be adjusted to the third frequency combination, the third processing module 23 sends a failure message to the second wireless access point so that the user terminal reselects a wireless access point.

[0112] Figure 3 FIG. 1 is a schematic diagram of the structure of an access and mobility management node according to another embodiment of the present disclosure. Figure 3 As shown, the access and mobility management node includes a memory 31 and a processor 32 .

[0113] The memory 31 is used to store instructions. The processor 32 is coupled to the memory 31. The processor 32 is configured to execute the instructions stored in the memory to implement the following. Figure 1 The method of any one of the embodiments.

[0114] like Figure 3 As shown, the access and mobility management node also includes a communication interface 33 for information exchange with other devices. At the same time, the access and mobility management node also includes a bus 34, through which the processor 32, the communication interface 33, and the memory 31 communicate with each other.

[0115] The memory 31 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory. The memory 31 may also be a memory array. The memory 31 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.

[0116] In addition, the processor 32 may be a central processing unit (CPU), or may be an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present disclosure.

[0117] The present disclosure also relates to a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, which are executed by a processor to implement the following Figure 1 The method of any one of the embodiments.

[0118] Figure 4 FIG. 1 is a schematic diagram of the structure of a communication system according to an embodiment of the present disclosure. Figure 4 As shown, the communication system includes a user terminal 41, a first wireless access point 42, a second wireless access point 43, a first access and mobility management node 44 and a second access and mobility management node 45. The first access and mobility management node 44 is Figure 2 or Figure 3 The access and mobility management node involved in any one of the embodiments.

[0119] The user terminal 41 is configured to send a first request for requesting the first access and mobility management node 44 to complete the access and registration operation to the first wireless access point 42, send a second request for requesting the second access and mobility management node 45 to complete the access or registration operation to the second wireless access point 43, access the first wireless access point 42 using the first frequency according to the first indication information related to the first frequency sent by the first wireless access point 42, and access the second wireless access point 43 using the second frequency according to the second indication information related to the second frequency sent by the second wireless access point 43.

[0120] In some embodiments, after sending the first request, the user terminal 41 is configured to send a second request to the second wireless access point 43 if it is determined according to the pre-configuration information that the second wireless access point 43 can be accessed.

[0121] In some embodiments, the user terminal 41 is configured to send the second request to the second wireless access point 43 upon receiving instruction information sent by the first access and mobility management node 44 to instruct to send the second request.

[0122] The first wireless access point 42 is configured to send the first request to the first access and mobility management node 44 , and send the first indication information sent by the first access and mobility management node 44 to the user terminal 41 .

[0123] The second wireless access point 43 is configured to send the second request to the second access and mobility management node 45 , and send the second indication information sent by the second access and mobility management node 45 to the user terminal 41 .

[0124] The second access and mobility management node 45 is configured to send the second request to the first access and mobility management node 44 , and send the second indication information sent by the first access and mobility management node 44 to the second wireless access point 43 .

[0125] Figure 5 A schematic diagram of the structure of a communication system according to another embodiment of the present disclosure. Figure 5 and Figure 4The difference is that in Figure 5 In the illustrated embodiment, the communication system further includes a data storage node 46 , a first user plane network element 47 and a second user plane network element 48 .

[0126] The data storage node 46 is configured to send notification information to the first access and mobility management node 44 after receiving the indication information that the second access and mobility management node 45 completes the access or registration operation of the user terminal 41 .

[0127] For example, after completing the access or registration operation of the user terminal 41 , the second access and mobility management node 45 sends corresponding indication information to the data storage node 46 .

[0128] After the user terminal 41 accesses the first wireless access point 42 using the first frequency, the user terminal 41 accesses the data network 49 through the first user plane network element 47. After the user terminal 41 accesses the second wireless access point 43 using the second frequency, the user terminal 41 accesses the data network 49 through the second user plane network element 48 and the first user plane network element 47. Since the user plane data is anchored by the same user plane network element 47, the diversion, migration and separation of the user data are achieved.

[0129] Figure 6 The present invention is a schematic diagram of the structure of a communication system according to another embodiment of the present invention. Figure 6 and Figure 5 The difference is that in Figure 6 In the illustrated embodiment, the second access and mobility management node 45 interacts with the first access and mobility management node 44 through the secure isolation network element 410. The secure isolation network element 410 only performs information forwarding and signaling conversion.

[0130] Figure 7 The present invention is a schematic diagram of the structure of a communication system according to another embodiment of the present invention. Figure 7 and Figure 4 The difference is that in Figure 7 In the illustrated embodiment, the communication system further includes a third wireless access point 421 .

[0131] For example, the user terminal 41 accesses the first wireless access point 42 and the second wireless access point 43. Since the position of the user terminal 41 changes, the user terminal 41 switches from the first wireless access point 42 to the third wireless access point 421. In this process, since the third wireless access point 421 does not support the first frequency used by the user terminal 41 to access the first wireless access point 42, the third wireless access point 421 sends the first frequency indication information to the first access and mobility management node 44.

[0132] The first wireless access point 42 sends the third indication information related to the third frequency sent by the first access and mobility management node 44 to the user terminal 41 .

[0133] The second wireless access point 43 sends the fourth indication information related to the fourth frequency sent by the first access and mobility management node 44 through the second access and mobility management node 45 to the user terminal 41 .

[0134] Thus, the user terminal 41 accesses the third wireless access point 421 using the third frequency, and adjusts the frequency of accessing the second wireless access point 43 to the fourth frequency according to the fourth indication information.

[0135] Thus, before the position of the user terminal 41 changes, the user terminal 41 simultaneously accesses the first wireless access point 42 and the second wireless access point 43. After the position of the user terminal 41 changes, the user terminal 41 simultaneously accesses the second wireless access point 43 and the third wireless access point 421. Figure 8 shown.

[0136] In some embodiments, the first wireless access point 42 is further configured to send the failure information sent by the access and mobility management node 44 to the user terminal 41. The user terminal 41 reselects a wireless access point according to the failure information.

[0137] Fig. 9 The present invention is a schematic diagram of the structure of a communication system according to another embodiment of the present invention. Fig. 9 and Figure 4 The difference is that in Fig. 9 In the illustrated embodiment, the communication system further includes a fourth wireless access point 431 .

[0138] For example, the user terminal 41 accesses the first wireless access point 42 and the second wireless access point 43. Since the location of the user terminal 41 changes, the user terminal 41 switches from the second wireless access point 43 to the fourth wireless access point 431. In this process, since the fourth wireless access point 431 does not support the second frequency used by the user terminal 41 to access the second wireless access point 43, the fourth wireless access point 431 sends the second frequency indication information to the first access and mobility management node 44 through the second access and mobility management node 45. The second wireless access point 43 sends the fifth indication information related to the fifth frequency sent by the first access and mobility management node 44 through the second access and mobility management node 45 to the user terminal 41. The user terminal 41 accesses the fourth wireless access point 431 using the fifth frequency.

[0139] Thus, before the position of the user terminal 41 changes, the user terminal 41 simultaneously accesses the first wireless access point 42 and the second wireless access point 43. After the position of the user terminal 41 changes, the user terminal 41 simultaneously accesses the first wireless access point 42 and the fourth wireless access point 431. Fig.10 shown.

[0140] In some embodiments, the second wireless access point 43 is further configured to send the failure information sent by the first access and mobility management node 44 through the second access and mobility management node 45 to the user terminal 41. The user terminal 41 reselects a wireless access point according to the failure information.

[0141] Fig.11 A flowchart of an access management method according to another embodiment of the present disclosure.

[0142] In step 111, a user terminal sends a first request to a first access and mobility management node through a first wireless access point.

[0143] In step 112, the first access and mobility management node completes access and registration operations of the user terminal according to the first request.

[0144] In step 113a, the first access and mobility management node determines, based on the current location of the user terminal, that the user terminal can access the core network through the second wireless access point. In this case, the first access and mobility management node sends a prompt message to the user terminal through the first wireless access point.

[0145] In step 113b, the first access and mobility management node determines that the user terminal can access the core network through the second wireless access point using the information provided by the data storage node. In this case, the first access and mobility management node sends prompt information to the user terminal through the first wireless access point.

[0146] In step 113c, the user terminal finds a second wireless access point that can be accessed according to the pre-configuration information.

[0147] In step 114, the user terminal sends a second request to the second access and mobility management node through the second wireless access point.

[0148] In step 115, the second access and mobility management node completes the access or registration operation of the user terminal according to the second request.

[0149] In step 116, the second access and mobility management node sends information indicating that the access or registration operation of the user terminal is completed to the data storage node, and the data storage node sends corresponding notification information to the first access and mobility management node.

[0150] In step 117, the first access and mobility management node determines a first frequency combination used by the user terminal at the current location according to any one of the preconfiguration information, the analysis information provided by the network data analysis node, and the frequency information provided by the first wireless access point. The first frequency combination includes a first frequency supported by the first wireless access point and a second frequency supported by the second wireless access point, and the second frequency and the first frequency.

[0151] In step 118, the first access and mobility management node sends first indication information related to the first frequency to the user terminal through the first wireless access point.

[0152] In step 119, the first access and mobility management node sends second indication information related to the second frequency to the second access and mobility management node.

[0153] In step 1110, the second access and mobility management node sends second indication information related to the second frequency to the user terminal through the second wireless access point.

[0154] In step 1111, the user terminal adjusts the access frequency, accesses the first wireless access point using the first frequency, and accesses the second wireless access point using the second frequency, so as to transmit data through different user plane network elements.

[0155] Fig.12 This is a flow chart of an access management method according to another embodiment of the present disclosure. In this embodiment, a user terminal accesses a first wireless access point and a second wireless access point. Due to a change in the location of the user terminal, the user terminal switches from the first wireless access point to a third wireless access point. That is, the first wireless access point is used as a source access point, and the third wireless access point is used as a target access point. In this process, since the third wireless access point does not support the first frequency used by the user terminal to access the first wireless access point, the third wireless access point sends frequency indication information to the first access and mobility management node. The relevant processing flow is as follows.

[0156] In step 121, a user terminal accesses a first wireless access point using a first frequency and accesses a second wireless access point using a second frequency, so as to transmit data through different user plane network elements.

[0157] In step 122, when the location of the user terminal changes, the user terminal determines to switch from the first wireless access point to the third wireless access point.

[0158] In step 123, the first wireless access point sends access frequency information of the first frequency used by the user to access the first wireless access point to the third wireless access point.

[0159] In step 124, when the third wireless access point does not support the first frequency, the third wireless access point sends frequency indication information to the first access and mobility management node.

[0160] In step 125, the first access and mobility management node determines a second frequency combination used by the user terminal at the current location according to any one of the preconfiguration information, the analysis information provided by the network data analysis node, and the frequency information provided by the second wireless access point. The second frequency combination includes a third frequency supported by the third wireless access point and a fourth frequency supported by the second wireless access point, and the third frequency is different from the fourth frequency.

[0161] In step 126, the first access and mobility management node sends third indication information related to the third frequency to the user terminal through the first wireless access point.

[0162] In step 127, the first access and mobility management node sends fourth indication information related to the fourth frequency to the second access and mobility management node.

[0163] In step 128, the user terminal adjusts the access frequency and accesses the third wireless access point using the third frequency, thereby completing the handover from the first wireless access point to the third wireless access point.

[0164] In step 129, the second access and mobility management node instructs the second wireless access point to adjust the access frequency of the user terminal to the fourth frequency.

[0165] Thus, before the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the second wireless access point. After the location of the user terminal changes, the user terminal simultaneously accesses the second wireless access point and the third wireless access point.

[0166] In some embodiments, if the first access and mobility management node cannot adjust the first frequency combination to the second frequency combination, the first access and mobility management node sends a failure message to the first wireless access point so that the user terminal reselects a wireless access point.

[0167] Fig.13 This is a flow chart of an access management method according to another embodiment of the present disclosure. In this embodiment, a user terminal accesses a first wireless access point and a second wireless access point. Due to a change in the location of the user terminal, the user terminal switches from the second wireless access point to a fourth wireless access point. That is, the second wireless access point is used as a source access point and the fourth wireless access point is used as a target access point. In this process, since the fourth wireless access point does not support the second frequency used by the user terminal to access the second wireless access point, the fourth wireless access point sends frequency indication information to the second access and mobility management node. The relevant processing flow is as follows.

[0168] In step 131, a user terminal accesses a first wireless access point using a first frequency and accesses a second wireless access point using a second frequency, so as to transmit data through different user plane network elements.

[0169] In step 132, when the location of the user terminal changes, the user terminal determines to switch from the second wireless access point to the fourth wireless access point.

[0170] In step 133, the first wireless access point sends access frequency information of the second frequency used by the user to access the second wireless access point to the fourth wireless access point.

[0171] In step 134, when the fourth wireless access point does not support the second frequency, the fourth wireless access point sends frequency indication information to the second access and mobility management node.

[0172] In step 135, the second access and mobility management node sends frequency indication information to the first access and mobility management node.

[0173] In step 136, the first access and mobility management node determines a third frequency combination used by the user terminal at the current location according to any one of the preconfiguration information, the analysis information provided by the network data analysis node, and the frequency information provided by the first wireless access point. The third frequency combination includes the first frequency and a fifth frequency supported by the fourth wireless access point, and the fifth frequency is different from the first frequency and the second frequency.

[0174] In step 137, the first access and mobility management node sends fifth indication information related to the fifth frequency to the second access and mobility management node.

[0175] In step 138, the second access and mobility management node sends fifth indication information related to the fifth frequency to the user terminal through the second wireless access point.

[0176] In step 139, the user terminal adjusts the access frequency and accesses the fourth wireless access point using the fifth frequency, thereby completing the handover from the second wireless access point to the fourth wireless access point.

[0177] Thus, before the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the second wireless access point. After the location of the user terminal changes, the user terminal simultaneously accesses the first wireless access point and the fourth wireless access point.

[0178] In some embodiments, if the first access and mobility management node cannot adjust the first frequency combination to the third frequency combination, the first access and mobility management node sends failure information to the second wireless access point through the second access and mobility management node so that the user terminal reselects the wireless access point.

[0179] By implementing the above embodiments of the present disclosure, the following beneficial effects can be obtained:

[0180] 1) When the user terminal accesses two links at the same time, it is not necessary to require the wireless access points on the two links to be base stations of the same manufacturer, which can solve the wireless interference problem of dual access. For example, the present disclosure can be applied to the scenario where the user terminal accesses the satellite and the ground base station at the same time, effectively reducing the delay caused by the switching.

[0181] 2) Effectively deliver user terminal throughput in certain wireless power-limited areas.

[0182] 3) It is beneficial for operators to operate multiple cross-generation technology networks (such as 4G / 5G / 6G coexistence), so that user terminals can use multiple wireless resources at the same time and make more rational use of the advantages of different frequencies.

[0183] 4) It is conducive to achieving wireless resource collaboration among operators.

[0184] In some embodiments, the functional unit described above can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component or any appropriate combination thereof for performing the functions described in the present disclosure.

[0185] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0186] The description of the present disclosure is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present disclosure to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present disclosure, and to enable those of ordinary skill in the art to understand the present disclosure and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An access management method, applied to a first access and mobility management node, the method comprising: completing access and registration operations of the user terminal according to a first request sent by the user terminal through the first wireless access point; After receiving notification information indicating that the user terminal completes an access or registration operation with a second access and mobility management node through a second wireless access point, determining a first frequency combination used by the user terminal at a current location, wherein the first frequency combination includes a first frequency supported by the first wireless access point and a second frequency supported by the second wireless access point, and the second frequency is different from the first frequency; Sending first indication information related to the first frequency to the first wireless access point, so that the user terminal accesses the first wireless access point using the first frequency; Sending second indication information related to the second frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the second frequency.

2. The method according to claim 1, further comprising: After completing the access and registration operations of the user terminal according to the first request, determining whether the user terminal can access the core network through the second wireless access point; If the user terminal can access the core network through the second wireless access point, indication information used to instruct the user terminal to send a second request to the second access and mobility management node through the second wireless access point is sent to the user terminal, wherein the second request is used by the second access and mobility management node to complete the access or registration operation of the user terminal.

3. The method according to claim 2, wherein: Determining whether the user terminal can access the core network through the second wireless access point includes: According to the current location of the user terminal, or by using the information provided by the data storage node, it is determined whether the user terminal can access the core network through the second wireless access point.

4. The method according to claim 1, wherein: Determining a first frequency combination used by the user terminal at the current location includes: The first frequency combination used by the user terminal at the current location is determined according to any one of pre-configuration information, analysis information provided by a network data analysis node, and frequency information provided by the first wireless access point.

5. The method according to claim 1, wherein: The notification information is sent by the data storage node, the user terminal or the second access and mobility management node.

6. The method according to any one of claims 1 to 5, further comprising: receiving first frequency indication information sent by a third wireless access point, wherein during a process in which the user terminal switches from the first wireless access point to the third wireless access point, the third wireless access point sends the first frequency indication information when it does not support the first frequency; Determining, according to the current location of the user terminal, whether the first frequency combination can be adjusted to a second frequency combination, wherein the second frequency combination includes a third frequency supported by the third wireless access point and a fourth frequency supported by the second wireless access point, and the fourth frequency is different from the third frequency; If the first frequency combination can be adjusted to the second frequency combination, third indication information related to the third frequency is sent to the first wireless access point, so that the user terminal switches from the first wireless access point to the third wireless access point using the third frequency; Sending fourth indication information related to the fourth frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the fourth frequency.

7. The method according to claim 6, further comprising: If the first frequency combination cannot be adjusted to the second frequency combination, a failure message is sent to the first wireless access point so that the user terminal reselects a wireless access point.

8. The method according to any one of claims 1 to 5, further comprising: receiving second frequency indication information sent by a fourth wireless access point through the second access and mobility management node, wherein during a process in which the user terminal switches from the second wireless access point to the fourth wireless access point, the fourth wireless access point sends the second frequency indication information when it does not support the second frequency; Determining, according to the current location of the user terminal, whether the first frequency combination can be adjusted to a third frequency combination, wherein the third frequency combination includes the first frequency and a fifth frequency supported by the fourth wireless access point, and the fifth frequency is different from the first frequency and the second frequency; If the first frequency combination can be adjusted to the third frequency combination, fifth indication information related to the fifth frequency is sent to the second wireless access point through the second access and mobility management node, so that the user terminal switches from the second wireless access point to the fourth wireless access point using the fifth frequency.

9. The method according to claim 8, further comprising: If the first frequency combination cannot be adjusted to the third frequency combination, a failure message is sent to the second wireless access point through the second access and mobility management node, so that the user terminal reselects a wireless access point.

10. An access and mobility management node, wherein the access and mobility management node is a first access and mobility management node, comprising: A first processing module is configured to complete access and registration operations of the user terminal according to a first request sent by the user terminal through the first wireless access point; A second processing module is configured to determine, after receiving notification information indicating that the user terminal completes an access or registration operation with a second access and mobility management node through a second wireless access point, a first frequency combination used by the user terminal at a current location, wherein the first frequency combination includes a first frequency supported by the first wireless access point and a second frequency supported by the second wireless access point, and the second frequency is different from the first frequency; A third processing module is configured to send first indication information related to the first frequency to the first wireless access point, so that the user terminal accesses the first wireless access point using the first frequency; Sending second indication information related to the second frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the second frequency.

11. The node according to claim 10, wherein: The first processing module is configured to, after completing the access and registration operations of the user terminal according to the first request, determine whether the user terminal can access the core network through the second wireless access point, and if the user terminal can access the core network through the second wireless access point, send to the user terminal indication information for instructing the user terminal to send a second request to the second access and mobility management node through the second wireless access point, wherein the second request is used for the second access and mobility management node to complete the access or registration operation of the user terminal.

12. The node according to claim 11, wherein: The first processing module is configured to determine whether the user terminal can access the core network through the second wireless access point according to the current location of the user terminal or using information provided by a data storage node.

13. The node according to claim 10, wherein: The second processing module is configured to determine the first frequency combination used by the user terminal at the current location according to any one of pre-configuration information, analysis information provided by the network data analysis node, and frequency information provided by the first wireless access point.

14. The node according to claim 10, wherein: The notification information is sent by the data storage node, the user terminal or the second access and mobility management node.

15. The node according to any one of claims 10 to 14, wherein: The first processing module is configured to receive first frequency indication information sent by a third wireless access point, wherein during a process in which the user terminal switches from the first wireless access point to the third wireless access point, the third wireless access point sends the first frequency indication information when it does not support the first frequency; The second processing module is configured to determine whether the first frequency combination can be adjusted to a second frequency combination according to the current location of the user terminal, wherein the second frequency combination includes a third frequency supported by the third wireless access point and a fourth frequency supported by the second wireless access point, and the fourth frequency is different from the third frequency; The third processing module is configured to, if the first frequency combination can be adjusted to the second frequency combination, send third indication information related to the third frequency to the first wireless access point, so that the user terminal switches from the first wireless access point to the third wireless access point using the third frequency, and send fourth indication information related to the fourth frequency to the second wireless access point through the second access and mobility management node, so that the user terminal accesses the second wireless access point using the fourth frequency.

16. The node according to claim 15, wherein: The third processing module is configured to send failure information to the first wireless access point if the first frequency combination cannot be adjusted to the second frequency combination, so that the user terminal reselects a wireless access point.

17. A node according to any one of claims 10 to 14, wherein: The first processing module is configured to receive second frequency indication information sent by a fourth wireless access point through the second access and mobility management node, wherein during a process in which the user terminal switches from the second wireless access point to the fourth wireless access point, the fourth wireless access point sends the second frequency indication information when it does not support the second frequency; The second processing module is configured to determine whether the first frequency combination can be adjusted to a third frequency combination according to the current location of the user terminal, wherein the third frequency combination includes the first frequency and a fifth frequency supported by the fourth wireless access point, and the fifth frequency is different from the first frequency and the second frequency; The third processing module is configured to send fifth indication information related to the fifth frequency to the second wireless access point through the second access and mobility management node if the first frequency combination can be adjusted to the third frequency combination, so that the user terminal switches from the second wireless access point to the fourth wireless access point using the fifth frequency.

18. The node according to claim 17, wherein: The third processing module is configured to send failure information to the second wireless access point through the second access and mobility management node if the first frequency combination cannot be adjusted to the third frequency combination, so that the user terminal reselects a wireless access point.

19. An access and mobility management node, comprising: Memory; A processor is coupled to the memory, and the processor is configured to execute the method according to any one of claims 1 to 9 based on instructions stored in the memory.

20. A communication system comprising: A first access and mobility management node, wherein the first access and mobility management node is the access and mobility management node according to any one of claims 10 to 19; The user terminal is configured to send a first request for requesting the first access and mobility management node to complete an access and registration operation to the first access and mobility management node through a first wireless access point, send a second request for requesting the second access and mobility management node to complete an access or registration operation to the second access and mobility management node through a second wireless access point, access the first wireless access point using the first frequency according to first indication information related to a first frequency sent by the first access and mobility management node through the first wireless access point, and access the second wireless access point using the second frequency according to second indication information related to a second frequency sent by the first access and mobility management node through the second access and mobility management node and the second wireless access point.

21. The system of claim 20, wherein: The user terminal is configured to, after sending the first request, send the second request to the second wireless access point if it is determined according to pre-configuration information that the second wireless access point can be accessed.

22. The system of claim 20, wherein: The user terminal is configured to send the second request to the second wireless access point when receiving instruction information sent by the first access and mobility management node to instruct sending the second request.

23. The system of claim 20, further comprising: The data storage node is configured to send notification information to the first access and mobility management node after receiving the indication information that the second access and mobility management node completes the access or registration operation of the user terminal.

24. The system according to any one of claims 20-23, further comprising: a third wireless access point, configured to send first frequency indication information to the first access and mobility management node when the user terminal switches from the first wireless access point to the third wireless access point and the third wireless access point does not support the first frequency; The first wireless access point is configured to send third indication information related to the third frequency sent by the first access and mobility management node to the user terminal; The second wireless access point is configured to send fourth indication information related to a fourth frequency sent by the first access and mobility management node through the second access and mobility management node to the user terminal; The user terminal is configured to switch from the first wireless access point to the third wireless access point using the third frequency, and to access the second wireless access point using the fourth frequency.

25. The system of claim 24, wherein: The first wireless access point is further configured to send the failure information sent by the first access and mobility management node to the user terminal; The user terminal is configured to reselect a wireless access point according to the failure information.

26. The system according to any one of claims 20-23, further comprising: a fourth wireless access point, configured to send second frequency indication information to the first access and mobility management node through the second access and mobility management node when the user terminal switches from the second wireless access point to the fourth wireless access point and the fourth wireless access point does not support the second frequency; The second wireless access point is configured to send fifth indication information related to the fifth frequency sent by the first access and mobility management node through the second access and mobility management node to the user terminal; The user terminal is configured to switch from the second wireless access point to the fourth wireless access point using the fifth frequency.

27. The system of claim 26, wherein: The second wireless access point is configured to send failure information sent by the first access and mobility management node through the second access and mobility management node to the user terminal; The user terminal is configured to reselect a wireless access point according to the failure information.

28. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the method according to any one of claims 1 to 9 is implemented.

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