CN107925861B

CN107925861B - Access method of wireless communication network and related device

Info

Publication number: CN107925861B
Application number: CN201580027213.6A
Authority: CN
Inventors: 李欢; 于游洋; 靳维生
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-07-20
Filing date: 2015-07-20
Publication date: 2020-02-14
Anticipated expiration: 2035-07-20
Also published as: WO2017011975A1; CN107925861A

Abstract

The embodiment of the invention provides an access method of a wireless communication network, which comprises the following steps: the gateway of the non-3 GPP access network determines to be the new MME serving the UE, the gateway of the non-3 GPP access network receives a response message sent by the new MME, the response message comprises the identification of the original MME, and the gateway of the non-3 GPP access network selects the original MME to serve the UE according to the identification of the original MME, so that the MME accessed by the non-3 GPP access network is the same as the MME accessed by the 3GPP access network, the MME selected by the UE in the dual-access network under the converged network architecture is the same, and the user experience is improved.

Description

Access method of wireless communication network and related device

Technical Field

The present invention relates to the field of communications, and in particular, to an access method for a wireless communication network and a related apparatus.

Background

A third party Partnership Project (3 rd Generation Partnership Project, 3GPP) formulated a Long Term Evolution (LTE) plan of a mobile communication network in 2004, and a new mobile communication network architecture was defined under the guidance of the Evolution plan. The architecture is more flat than Second Generation (full english: Second Generation, abbreviated english: 2G) networks and third Generation (full english: third Generation, abbreviated english: 3G) networks, and only the packet switched (full english: PacketSwitching, abbreviated english: PS) domain is reserved, and thus may also be referred to as Evolved packet system (full english: Evolved packet system, abbreviated english: EPS). The core Network of the new mobile communication Network, namely, the Evolved packet core Network (EPC), not only supports 3GPP Access technologies, but also supports Non-3 GPP (Non 3GPP) Access technologies, such as Code Division Multiple Access2000 (CDMA 2000), Worldwide Interoperability for Microwave Access (WiMAX), and Wireless Local Area Network (WLAN). The core Network of the 3GPP wireless evolution Network mainly comprises three logic function bodies of a Mobility Management Network element (Mobility Management Entity, abbreviated in English), a service Gateway (serving Gateway, abbreviated in English: SGW), a packet Data Network Gateway (Public-Data Network Gateway, abbreviated in English: P-GW), wherein the MME is responsible for Non-access stratum (Non-access Network Gateway, abbreviated in English: NAS) signaling transmission and signaling encryption between the MME and user equipment, allocates temporary identity identifiers for the user equipment, selects the core Network elements such as the SGW and the P-GW, and provides functions of roaming, tracking, NAS safety and the like; the SGW is a mobility anchor point for switching between local base stations (English full name: Evolved Node B, English abbreviation: eNB) and provides related functions of legal monitoring; the PGW is responsible for user address allocation, policy control, execution of charging rules, and related functions of lawful interception.

In the existing network architecture, when a User Equipment (User Equipment, abbreviated in english: UE) accesses a 3GPP core network through a non-3 GPP access network, a trusted non-3 GPP access network accesses through an S2a interface between the P-GW, and an untrusted non-3 GPP access network accesses through an S2b interface between an Evolved Packet Data Gateway (Evolved Packet Data Gateway, abbreviated in english: ePDG) and the P-GW. The ePDG is responsible for forwarding or distributing the mobile IP address of the UE, registering the local IP address of the UE and binding the mobile IP address of the UE with the local IP address. When accessing from a non-3 GPP access Network, an Authentication, Authorization and accounting server (full English name: Authentication, Authorization, accounting server, full English name: AAA server) realizes the Authentication and Authorization operation of UE through the interaction with a Home subscriber server (full English name: Home subscriber Server, full English name: HSS), and registers P-GW identification information used by each Public Data Network (full English name: Public Data Network, full English name: PDN) connection established by the UE into the HSS. When UE moves between 3GPP access network and non-3 GPP access network, the same P-GW can be found through PGW ID registered in HSS to establish PDN connection, IP address is kept unchanged, and service continuity can be guaranteed.

From the above, the process of accessing the UE from the non-3 GPP access network to the 3GPP core network requires the participation of 3GPP aaservers, is completely independent from the process of accessing the 3GPP core network from the 3GPP access network by the UE, and can implement that the 3GPP AAA Server function is merged with the MME network element in the existing EPC without separately deploying the 3GPP AAA Server, but even after the 3GPP AAA Server function is merged into the MME, when the UE accesses the 3GPP core network from the non-3 GPP access network and the 3GPP access network, respectively, since the access device of the non-3 GPP access network and the access network device of the 3GPP access network both have a mechanism of separately selecting the MME, when the UE accesses the 3GPP core network from the non-3 GPP access network, the non-3 GPP access network device selects one MME for management, and when the UE accesses the 3GPP core network from the 3GPP access network, the 3GPP access network device also selects one MME for management, MME respectively selected by access equipment of a non-3 GPP access network and MME respectively selected by access network equipment of a 3GPP access network are probably different, so that unified control of the UE on the 3GPP access and the non-3 GPP access cannot be realized, and user experience is influenced.

Disclosure of Invention

In view of this, embodiments of the present invention provide an access method and a related apparatus for a wireless communication network, which can implement unified control of 3GPP access and non-3 GPP access by a UE, and improve user experience.

A first aspect of an embodiment of the present invention provides an access method for a wireless communication network, including:

a gateway of a non-third generation partnership project (3 GPP) access network receives an access request message sent by User Equipment (UE), wherein the UE is accessed into the 3GPP access network, and an original mobility management network element (MME) provides service for the UE;

after receiving the access request message, the gateway of the non-3 GPP access network selects a new MME to serve the UE;

the gateway of the non-3 GPP access network sends an authentication and authorization request message to the new MME;

a gateway of the non-3 GPP access network receives a response message sent by the new MME, wherein the response message comprises the identification of the original MME;

the gateway of the non-3 GPP access network selects the original MME to serve the UE according to the identification of the original MME;

and the gateway of the non-3 GPP access network establishes a session with the original MME.

With reference to the first aspect of the present embodiment, in a first implementation manner of the first aspect of the present embodiment, the access request message includes dual access indication information, and the authentication and authorization request message includes the dual access indication information;

the dual access indication information is used for indicating the UE to access a 3GPP access network and a non-3 GPP access network simultaneously.

A second aspect of the embodiments of the present invention provides an access method for a wireless communication network, where the method is used for accessing a non-third generation partnership project 3GPP access network to a user equipment UE, the UE has accessed to a 3GPP access network, an original mobility management network element MME provides a service for the UE through the 3GPP access network, and the original MME has been registered to a home subscriber server HSS, and the method includes:

the HSS receives an authentication and authorization request message sent by a gateway of the non-3 GPP access network through a new MME, and the new MME is selected by the non-3 GPP access network after receiving an access request message sent by the UE;

and the HSS sends the identifier of the original MME to a gateway of the non-3 GPP access network through the new MME, so that the gateway of the non-3 GPP access network selects the original MME according to the identifier of the original MME and establishes a session with the original MME.

With reference to the second aspect of the present invention, in a first implementation manner of the second aspect of the present invention, the sending, by the HSS, the identifier of the old MME to the gateway of the non-3 GPP access network through the new MME includes:

and if the new MME is different from the original MME, the HSS sends the identification of the original MME to a gateway of the non-3 GPP access network through the new MME.

With reference to the second aspect of the present embodiment, in a second implementation manner of the second aspect of the present embodiment, the authentication and authorization request message includes the dual access indication information; the dual access indication information is used for indicating the UE to simultaneously access a 3GPP access network and a non-3 GPP access network;

the HSS sending the identifier of the original MME to the gateway of the non-3 GPP access network through the new MME comprises the following steps:

the HSS acquires the identifier of the original MME according to the double-access indication information and sends the identifier of the original MME to a gateway of the non-3 GPP access network through the new MME; alternatively, the first and second electrodes may be,

and the HSS acquires the identifier of the original MME according to the dual-access indication information, and sends a reselection indication and the identifier of the original MME to a gateway of the non-3 GPP access network through the new MME.

A third aspect of an embodiment of the present invention provides an access method for a wireless communication network, where the method is used for accessing, to a non-third generation partnership project 3GPP access network, a user equipment UE, where the UE has already accessed to a 3GPP access network, an original mobility management network element MME serves the UE through the 3GPP access network, and the original MME has been registered in a home subscriber server HSS, and the method includes:

the new MME receives an authentication and authorization request message sent by a gateway of the non-3 GPP access network;

the new MME sends the authentication and authorization request message to the HSS;

the new MME receives the identification of the original MME sent by the HSS;

and the new MME sends a response message to the gateway of the non-3 GPP access network, wherein the response message comprises the identification of the original MME so as to indicate the gateway of the non-3 GPP access network to select the original MME according to the identification of the original MME.

A fourth aspect of the present invention provides an access method for a wireless communication network, where the method is used for accessing a third generation partnership project 3GPP access network to a user equipment UE, the UE has accessed a non-3 GPP access network, an original mobility management network element MME provides a service for the UE through the non-3 GPP access network, and the original MME has registered to a home subscriber server HSS, and the method includes:

the HSS receives an authentication and authorization request message sent by a new MME, wherein the authentication and authorization request message is sent by the new MME according to an access request message sent by the UE through the 3GPP access network;

and if the new MME is different from the original MME registered by the HSS, the HSS sends the identifier of the original MME to the new MME, so that the new MME sends a reselection indication to the original MME according to the identifier of the original MME to indicate the original MME to send a session termination request to a gateway of the non-3 GPP access network.

With reference to the fourth aspect of the present invention, in a first implementation manner of the fourth aspect of the present invention, the reselection indication is attached to a context request message sent by the new MME to the old MME, where the reselection indication is a reselection indication signaling, and the reselection indication signaling carries an identifier of the new MME, or the reselection indication is an identifier of the new MME;

and the session termination request carries the identifier of the new MME, so that the gateway of the non-3 GPP access network terminates the session with the original MME and selects the new MME according to the identifier of the new MME.

With reference to the fourth aspect of the present invention or the first implementation manner of the fourth aspect, in a second implementation manner of the fourth aspect of the present invention, after the HSS stores the new MME, the method further includes:

and the HSS sends a registration cancellation message to the original MME, and cancels the registration information of the original MME.

A fifth aspect of the embodiments of the present invention provides an access method for a wireless communication network, where the method is used for accessing a third generation partnership project 3GPP access network to a user equipment UE, the UE has accessed a non-3 GPP access network, an original mobility management network element MME provides a service for the UE through the non-3 GPP access network, and the original MME has been registered in a home subscriber server HSS, and the method includes:

the original MME receives a context request message sent by a new MME, the context request message carries a reselection indication and an identifier of the new MME, and the new MME is selected by a base station for the UE when the UE is accessed to the 3GPP access network;

and the original MME sends a session termination request to a gateway of the non-3 GPP access network according to the reselection indication, wherein the session termination request carries the identifier of the new MME, so that the gateway of the non-3 GPP access network terminates the session with the original MME and establishes the session with the new MME according to the session termination request.

With reference to the fifth aspect of the present embodiment, in a first implementation manner of the fifth aspect of the present embodiment, after the old MME receives the context request message sent by the new MME, the method further includes:

and the original MME sends the context content of the UE to the new MME.

A sixth aspect of the present invention provides an access method for a wireless communication network, where the method is used for accessing a third generation partnership project 3GPP access network to a user equipment UE, where the UE has accessed a non-3 GPP access network, an original mobility management network element MME provides a service for the UE through the non-3 GPP access network, and the original MME has been registered in a home subscriber server HSS, and the method includes:

a gateway of the non-3 GPP access network receives a session termination request sent by the original MME, wherein the session termination request carries an identifier of a new MME, and the new MME is selected by a base station for the UE when the UE is accessed to the 3GPP access network;

the gateway of the non-3 GPP access network disconnects the session with the original MME according to the session termination request;

the gateway of the non-3 GPP access network selects the new MME according to the identification of the new MME;

and the gateway of the non-3 GPP access network establishes a session with the new MME.

A seventh aspect of the present invention provides an access method for a wireless communication network, including:

user Equipment (UE) acquires an identifier of an original mobility management network element (MME) providing service for the UE through a first access network, wherein the original MME has the authentication and authorization function of a non-third generation partnership project (3 GPP) access network;

and the UE sends an access request message to a second access network, wherein the access request message comprises the identifier of the original MME, and the identifier of the original MME is used for the equipment of the second access network to select a target MME.

With reference to the seventh aspect of the present embodiment, in a first implementation manner of the seventh aspect of the present embodiment, the first access network is a 3GPP access network, the second access network is a non-3 GPP access network, and the device in the second access network is a gateway in the non-3 GPP access network; alternatively, the first and second electrodes may be,

the first access equipment is a non-3 GPP access network, the second access network is a 3GPP access network, and the equipment of the second access network is a base station eNodeB.

With reference to the seventh aspect of the present embodiment or the first implementation manner of the seventh aspect, in a second implementation manner of the seventh aspect of the present embodiment, the obtaining, by the UE, the identifier of the original MME serving the UE through a first access network includes:

and the UE receives the identifier of the original MME sent by the original MME.

With reference to the second implementation manner of the seventh aspect of the present embodiment, in a third implementation manner of the seventh aspect of the present embodiment, the receiving, by the UE, the identifier of the MME sent by the original MME includes: and the UE receives the identification information of the UE sent by the original MME, wherein the identification information of the UE comprises the identification of the original MME.

An eighth aspect of the present invention provides a gateway of a non-third generation partnership project 3GPP access network, including:

a receiving unit, configured to receive an access request message sent by a user equipment UE, where the UE has accessed a 3GPP access network, and an original mobility management network element MME provides a service for the UE;

a processing unit, configured to select a new MME to serve the UE after the receiving unit receives the access request message;

a sending unit, configured to send an authentication and authorization request message to the new MME;

the receiving unit is further configured to receive a response message sent by the new MME, where the response message includes an identifier of the old MME;

the processing unit is further configured to select the old MME to serve the UE according to the identifier of the old MME;

the processing unit is further configured to establish a session with the old MME.

With reference to the eighth aspect of the present embodiment, in a first implementation manner of the eighth aspect of the present embodiment, the access request message includes dual access indication information, and the authentication and authorization request message includes the dual access indication information;

A ninth aspect of the present invention provides a home subscriber server HSS, where the HSS is configured to enable a user equipment UE to access a non-third generation partnership project 3GPP access network, where the UE has already accessed a 3GPP access network, an original mobility management element MME provides a service for the UE through the 3GPP access network, and the original MME has been registered in the HSS, and the home subscriber server HSS includes:

a receiving unit, configured to receive, through a new MME, an authentication and authorization request message sent by a gateway of the non-3 GPP access network, where the new MME is selected by the non-3 GPP access network after receiving the access request message sent by the UE;

and a sending unit, configured to send the identifier of the original MME to the gateway of the non-3 GPP access network through the new MME, so that the gateway of the non-3 GPP access network selects the original MME according to the identifier of the original MME, and establishes a session with the original MME.

With reference to the ninth aspect of the embodiment of the present invention, in a first implementation manner of the ninth aspect of the embodiment of the present invention, the sending unit is specifically configured to:

if the new MME is different from the original MME, the sending unit sends the identifier of the original MME to a gateway of the non-3 GPP access network through the new MME.

With reference to the first implementation manner of the ninth aspect of the present embodiment, in a second implementation manner of the ninth aspect of the present embodiment, the authentication and authorization request message includes the dual access indication information; the dual access indication information is used for indicating the UE to simultaneously access a 3GPP access network and a non-3 GPP access network;

the sending unit is further specifically configured to:

after acquiring the identifier of the original MME according to the dual-access indication information, sending the identifier of the original MME to a gateway of the non-3 GPP access network through the new MME; alternatively, the first and second electrodes may be,

and after acquiring the identifier of the original MME according to the dual-access indication information, sending a reselection indication and the identifier of the original MME to a gateway of the non-3 GPP access network through the new MME.

A tenth aspect of the present invention provides a mobility management element MME, where the MME is a new MME, the new MME is used for accessing a non-third generation partnership project 3GPP access network to a user equipment UE, the UE has already accessed a 3GPP access network, an original MME serves the UE through the 3GPP access network, and the original MME has been registered in a home subscriber server HSS, and the method includes:

a receiving unit, configured to receive an authentication and authorization request message sent by a gateway of the non-3 GPP access network;

a sending unit, configured to send the authentication and authorization request message to the HSS;

the receiving unit is further configured to receive the identifier of the old MME sent by the HSS;

the sending unit is further configured to send a response message to the gateway of the non-3 GPP access network, where the response message includes the identifier of the original MME, so as to instruct the gateway of the non-3 GPP access network to select the original MME according to the identifier of the original MME.

An eleventh aspect of the present invention provides a home subscriber server HSS, where the HSS is configured to enable a user equipment UE to access a third generation partnership project 3GPP access network, where the UE has accessed a non-3 GPP access network, an original mobility management network element MME provides a service for the UE through the non-3 GPP access network, and the original MME has been registered in the HSS, and the home subscriber server HSS includes:

a receiving unit, configured to receive an authentication and authorization request message sent by a new MME, where the authentication and authorization request message is sent by the new MME according to an access request message sent by the UE through the 3GPP access network;

a sending unit, configured to send, when the new MME is different from the old MME registered by the HSS, the identifier of the old MME to the new MME, so that the new MME sends a reselection indication to the old MME according to the identifier of the old MME, so as to indicate the old MME to send a session termination request to a gateway of the non-3 GPP access network.

With reference to the eleventh aspect of the present embodiment, in a first implementation manner of the eleventh aspect of the present embodiment, the reselection indication is attached to a context request message sent by the new MME to the old MME, where the reselection indication is a reselection indication signaling, and the reselection indication signaling carries an identifier of the new MME, or the reselection indication is an identifier of the new MME;

With reference to the eleventh aspect or the first implementation manner of the eleventh aspect of the present embodiment, in a second implementation manner of the eleventh aspect of the present embodiment, the HSS further includes a storage unit, configured to store the new MME;

the sending unit is further configured to:

and after the storage unit stores the new MME, sending a registration cancellation message to the original MME to cancel the registration information of the original MME.

A twelfth aspect of the present invention provides a mobility management element MME, where the MME is an original MME, the original MME is used for accessing a third generation partnership project 3GPP access network to a user equipment UE, the UE has accessed a non-3 GPP access network, the original MME provides a service for the UE through the non-3 GPP access network, and the original MME has registered to a home subscriber server HSS, and the original MME includes:

a receiving unit, configured to receive a context request message sent by a new MME, where the context request message carries a reselection indication and an identifier of the new MME, and the new MME is an MME selected by a base station for the UE when the UE accesses the 3GPP access network;

a sending unit, configured to send a session termination request to the gateway of the non-3 GPP access network according to the reselection indication, where the session termination request carries an identifier of the new MME, so that the gateway of the non-3 GPP access network terminates the session with the original MME according to the session termination request and establishes the session with the new MME.

With reference to the twelfth aspect of the embodiment of the present invention, in a first implementation manner of the twelfth aspect of the embodiment of the present invention, the sending unit is further configured to:

and after the receiving unit receives the context request message sent by the new MME, sending the context content of the UE to the new MME.

A thirteenth aspect of the present invention provides a gateway of a non-third generation partnership project 3GPP access network, where the gateway is used for accessing a 3GPP access network to a user equipment UE, the UE has accessed the non-3 GPP access network, an original mobility management network element MME provides a service for the UE through the non-3 GPP access network, and the original MME has been registered in a home subscriber server HSS, and the gateway includes:

a receiving unit, configured to receive a session termination request sent by the original MME, where the session termination request carries an identifier of a new MME, and the new MME is an MME selected by a base station for the UE when the UE accesses the 3GPP access network;

a processing unit, configured to disconnect a session with the old MME according to the session termination request;

the processing unit is further configured to select the new MME according to the identifier of the new MME;

the processing unit is further configured to establish a session with the new MME.

A fourteenth aspect of an embodiment of the present invention provides a user equipment UE, including:

a processing unit, configured to acquire an identifier of an original mobility management network element MME that provides a service for the UE through a first access network, where the original MME has an authentication and authorization function of a non-third generation partnership project 3GPP access network;

a sending unit, configured to send an access request message to a second access network, where the access request message includes an identifier of the original MME, and the identifier of the original MME is used for a device of the second access network to select a target MME.

With reference to the fourteenth aspect of the present embodiment, in a first implementation manner of the fourteenth aspect of the present embodiment, the first access network is a 3GPP access network, the second access network is a non-3 GPP access network, and the device in the second access network is a gateway in the non-3 GPP access network; alternatively, the first and second electrodes may be,

With reference to the fourteenth aspect or the first implementation manner of the fourteenth aspect of the present embodiment, in a second implementation manner of the fourteenth aspect of the present embodiment, the UE further includes:

and the receiving unit is used for receiving the identifier of the original MME sent by the original MME.

With reference to the second implementation manner of the fourteenth aspect of the embodiment of the present invention, in a third implementation manner of the fourteenth aspect of the embodiment of the present invention, the receiving unit is specifically configured to:

and receiving the identification information of the UE, which is sent by the original MME, wherein the identification information of the UE comprises the identification of the original MME.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of an access method of a wireless communication network according to an embodiment of the present invention;

fig. 2 is another schematic diagram of an access method of a wireless communication network according to an embodiment of the present invention;

fig. 3 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

fig. 4 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

fig. 5 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

fig. 6 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

fig. 7 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

fig. 8 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

fig. 9 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

fig. 10 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

fig. 11 is another diagram illustrating an access method of a wireless communication network according to an embodiment of the present invention;

FIG. 12 is a diagram of a gateway of a non-third Generation partnership project 3GPP access network in an embodiment of the present invention;

fig. 13 is a schematic diagram of a home subscriber server HSS in an embodiment of the invention;

fig. 14 is a schematic diagram of a mobility management network element MME according to an embodiment of the present invention;

fig. 15 is another schematic diagram of a home subscriber server HSS in an embodiment of the invention;

fig. 16 is another schematic diagram of a mobility management network element MME according to an embodiment of the present invention;

FIG. 17 is another diagram of a gateway of a non-third generation partnership project 3GPP access network in an embodiment of the present invention;

FIG. 18 is a diagram of a UE according to an embodiment of the present invention;

FIG. 19 is another diagram of a gateway of a non-third Generation partnership project 3GPP access network in an embodiment of the present invention;

fig. 20 is another schematic diagram of a home subscriber server HSS in an embodiment of the invention;

fig. 21 is another schematic diagram of a mobility management network element MME according to an embodiment of the present invention;

fig. 22 is another schematic diagram of a user equipment UE in the embodiment of the present invention.

Detailed Description

The present invention discloses an access method of a wireless communication network, and the following describes the access method of the wireless communication network provided by the present invention in detail with reference to fig. 1.

101. A gateway of a non-third generation partnership project (3 GPP) access network receives an access request message sent by User Equipment (UE), wherein the UE is accessed into the 3GPP access network and is served by an original mobility management network element (MME);

when User Equipment (UE) needs to be accessed into a 3GPP access network and a non-3 GPP access network, the UE must have an access sequence when being accessed into the 3GPP access network or the non-3 GPP access network. When the UE has accessed to the 3GPP access network, the 3GPP access network selects an original MME to serve the UE, and because no MME which is registered and is different from the original MME exists in the core network at the moment, the 3GPP access network does not need to consider selecting the registered MME when selecting the MME, and only needs to determine that the selected original MME supports the authentication and authorization function of the non-third generation partnership project 3GPP access network. And when the UE accesses the 3GPP access network, a Home Subscriber Server (HSS) stores the original MME determined by a gateway of the 3GPP access network.

And when the UE needs to access the non-3 GPP access network, sending an access request message to a gateway of the non-3 GPP access network.

102. After receiving the access request, the gateway of the non-3 GPP access network selects a new MME to serve the UE;

because the non-3 GPP access network and the 3GPP access network are independent access networks, and both the non-3 GPP access network and the 3GPP access network have a mechanism for independently selecting an MME, when a gateway of the non-3 GPP access network receives an access request message sent by the UE, the new MME is selected to serve the UE, and the new MME integrates the authentication and authorization function of the 3GPP access network.

103. The gateway of the non-3 GPP access network sends an authentication and authorization request message to the new MME;

after the gateway of the non-3 GPP access network selects the new MME, it needs to perform data communication with the new MME, and before implementing data communication between the two, the gateway of the non-3 GPP access network needs to send an authentication and authorization request message to the new MME, and after the new MME replies to a gateway response message of the non-3 GPP access network, the gateway of the non-3 GPP access network can implement data communication with the new MME.

104. The gateway of the non-3 GPP access network receives a response message sent by the new MME, wherein the response message comprises an identifier of the original MME, the identifier of the original MME is sent by a Home Subscriber Server (HSS) in the received authentication and authorization request message sent by the new MME, and the original MME is sent to the new MME after being determined to be registered in the HSS;

after receiving the authentication and authorization request message sent by the gateway of the non-3 GPP access network, the new MME forwards the authentication and authorization request message to a Home Subscriber Server (HSS), and after receiving the authentication and authorization request message forwarded by the new MME, the HSS judges whether the original MME which is already registered is stored in the HSS, if so, the new MME which is determined by the gateway of the non-3 GPP access network is different from the original MME which is determined by the 3GPP access network, the HSS sends the identification of the original MME which is already registered to the new MME, instructs the gateway of the non-3 GPP access network to reselect the MME, and selects the original MME according to the identification of the original MME.

105. The gateway of the non-3 GPP access network selects the original MME to serve the UE according to the identification of the original MME;

and when the gateway of the non-3 GPP access network receives a response message containing the identifier of the original MME, the original MME is selected to serve the UE according to the identifier of the original MME, so that the condition that the MME used by the UE for accessing the non-3 GPP access network is the same as the MME used by the UE for accessing the 3GPP access network is ensured, and unified control is realized.

106. A gateway of the non-3 GPP access network establishes a session with the original MME;

and when the gateway of the non-3 GPP access network selects the original MME to serve the UE, establishing a session with the original MME, so that the service of the non-3 GPP access network is connected with the UE through the original MME.

In the embodiment of the invention, a gateway of a non-3 GPP access network selects a new MME serving the UE, the gateway of the non-3 GPP access network receives a response message sent by the new MME, the response message comprises an identifier of the original MME, and the gateway of the non-3 GPP access network selects the original MME to serve the UE according to the identifier of the original MME, so that the MME accessed by the non-3 GPP access network is the same as the MME accessed by the 3GPP access network, the selected MME of the UE is the same when the UE is subjected to dual-access network under a converged network framework, and the user experience is improved.

The foregoing embodiment describes that, after receiving an authentication and authorization request message forwarded by a new MME, an HSS determines that an original MME that has been registered is stored in the HSS, and then triggers a reselection procedure to instruct a gateway of a non-3 GPP access network to reselect the MME. Described in detail below, referring to fig. 2, another embodiment of the access method of the wireless communication network in the embodiment of the present invention includes:

201. a gateway of a non-3 GPP access network receives an access request message sent by User Equipment (UE), wherein the UE is accessed to the 3GPP access network and is served by an original MME; the access request message also comprises dual access indication information;

in order to ensure that the non-3 GPP access network and the UE are in data signaling communication safely, the access request message may be internet key exchange second version IKEv2 signaling or wireless local area network control protocol WLCP signaling.

Optionally, before sending the access request message, the UE first determines whether the UE has accessed the 3GPP access network, if so, it indicates that the UE is currently performing network dual access, and the UE may send a dual access indication message to the non-3 GPP access network, and optionally, the dual access indication message may be attached to the access request message and sent to a gateway of the non-3 GPP access network.

202. After receiving the access request, the gateway of the non-3 GPP access network selects a new MME to serve the UE;

the details are described with reference to S102.

203. The gateway of the non-3 GPP access network sends an authentication and authorization request message to the new MME; the authentication and authorization request message comprises the dual access indication information, and the dual access indication information is used for indicating that the UE is simultaneously accessed to a 3GPP access network and a non-3 GPP access network;

after receiving the dual access indication information, the HSS directly triggers a reselection process without determining whether the original MME which has been registered is stored in the HSS, and sends an identifier of the original MME to a gateway of the non-3 GPP access network through the new MME, or sends a reselection indication and an identifier of the original MME to a gateway of the non-3 GPP access network through the new MME. In this way, the HSS does not need to determine whether the original MME which has been registered is stored in the HSS, but directly triggers a reselection process, thereby reducing the waiting time of the UE.

It should be noted that, after it may be agreed that the gateway of the non-3 GPP access network receives the identifier of the original MME, when the original MME is selected according to the identifier of the original MME, the HSS does not need to separately send a reselection indication to the new MME, or may not do so, the HSS separately sends a reselection indication to the new MME, so as to indicate the gateway of the non-3 GPP access network to select the original MME according to the identifier of the original MME.

204. The gateway of the non-3 GPP access network receives a response message sent by the new MME, wherein the response message comprises an identifier of the original MME, the identifier of the original MME is sent by a Home Subscriber Server (HSS) in the received authentication and authorization request message sent by the new MME, and the original MME is sent to the new MME after being determined to be registered in the HSS; the response message also comprises a reselection indication sent by the HSS to the new MME, wherein the reselection indication is used for indicating a gateway reselection MME of the non-3 GPP access network;

the details are described with reference to S104.

205. The gateway of the non-3 GPP access network selects the original MME to serve the UE according to the reselection indication and the identification of the original MME;

the details are described with reference to S105.

206. A gateway of the non-3 GPP access network establishes a session with the original MME;

details are described with reference to S106.

In the embodiment of the invention, when the UE is accessed to the non-3 GPP access network, whether the UE is accessed to the 3GPP access network is judged, if so, double access indication information is sent to the gateway of the non-3 GPP access network, the gateway of the non-GPP access network sends the double access indication information to the HSS through the new MME, so that the HSS directly triggers a reselection process after receiving the double access indication information, therefore, only the UE is required to judge whether the UE is accessed to the 3GPP access network when being accessed to the non-3 GPP access network, and the HSS is not required to judge whether the registered original MME is stored, the reselection process can be triggered, the waiting time of the UE is reduced, and the efficiency of network communication is improved.

Referring to fig. 3, another embodiment of the access method of the wireless communication access network in the embodiment of the present invention includes:

301. a Home Subscriber Server (HSS) receives an authentication and authorization request message sent by a gateway of the non-3 GPP access network through a new MME, wherein the new MME is selected by the non-3 GPP access network after receiving an access request message sent by the UE;

user Equipment (UE) has access to a 3GPP access network, an original mobility management network element (MME) serves the UE through the 3GPP access network, the original MME is registered to a Home Subscriber Server (HSS), when the UE accesses to a non-third generation partnership project (3 GPP) access network, the UE sends an access request message to a gateway of the non-3 GPP access network, the gateway of the non-3 GPP access network selects a new MME supporting the authentication and authorization functions of the non-3 GPP access network to provide services for the UE and sends an authentication and authorization request message to the new MME, and after receiving the authentication and authorization request message, the new MME sends the authentication and authorization request message to the HSS through analysis and encapsulation of the authentication and authorization request message.

302. The HSS sends the identification of the original MME to a gateway of the non-3 GPP access network through the new MME, so that the gateway of the non-3 GPP access network selects the original MME according to the identification of the original MME and establishes a session with the original MME;

because the UE has accessed the 3GPP access network, an original MME provides services for the UE through the 3GPP access network, and the original MME has been registered in the HSS, after the HSS receives an authentication and authorization request message sent by the new MME, in order to make a gateway selection of the non-3 GPP access network be the same as an MME determined by the 3GPP access network, the HSS sends an identifier of the original MME to the new MME, and the new MME sends the identifier of the original MME to a gateway of the non-3 GPP access network, so that the gateway of the non-3 GPP access network selects the original MME according to the identifier of the original MME, and establishes a session with the original MME, thereby realizing that the non-3 GPP access network and the 3GPP access network select the same MME to provide services for the UE.

In the embodiment of the invention, the HSS receives the authentication and authorization request message sent by the gateway of the non-3 GPP access network through the new MME, and the HSS sends the identification of the original MME to the gateway of the non-3 GPP access network through the new MME, so that the MME accessed by the non-3 GPP access network is the same as the MME accessed by the 3GPP access network, the MME selected by the UE in the dual-access network under the converged network framework is the same, and the user experience is improved.

In the above embodiment, the HSS is described to send the identifier of the original MME to the gateway of the non-3 GPP access network through the new MME, and in practical application, if the HSS can determine that the new MME is different from the original MME, the HSS sends the identifier of the original MME to the gateway of the non-3 GPP access network through the new MME; or, if the HHS further receives the dual access indication information included in the authentication and authorization request information, the HSS sends the identifier of the old MME to the gateway of the non-3 GPP access network through the new MME according to the dual access indication information, which is described in detail below, and referring to fig. 4, another embodiment of the access method of the wireless communication access network in the embodiment of the present invention includes:

401. a Home Subscriber Server (HSS) receives an authentication and authorization request message sent by a gateway of the non-3 GPP access network through a new MME, wherein the new MME is selected by the non-3 GPP access network after receiving an access request message sent by the UE;

details are described with reference to S301.

402. If the new MME is different from the original MME, the HSS sends the identification of the original MME to a gateway of the non-3 GPP access network through the new MME, so that the gateway of the non-3 GPP access network selects the original MME according to the identification of the original MME and establishes a session with the original MME;

and after receiving the authentication and authorization request message sent by the new MME, the HSS can search the original MME and judge whether the new MME is the same as the original MME, and if the new MME is different from the original MME, the HSS sends the identifier of the original MME to the gateway of the non-3 GPP access network through the new MME so as to reselect the gateway of the non-3 GPP access network.

Optionally, the authentication and authorization request message includes dual access indication information; the dual access indication information is used for indicating the UE to simultaneously access a 3GPP access network and a non-3 GPP access network;

step 402 may be: the HSS acquires the identifier of the original MME according to the double-access indication information and sends the identifier of the original MME to a gateway of the non-3 GPP access network through the new MME; alternatively, the first and second electrodes may be,

When the UE is accessed to the non-3 GPP access network, whether the current access is network dual-access can be judged, if so, a dual-access indication message can be sent, the dual-access indication message can be included in an access request message sent by the UE to a gateway of the non-3 GPP access network, the gateway of the non-3 GPP access network carries the dual-access indication message in the authentication and authorization request message and sends the authentication and authorization request message to the HSS through the new MME, and therefore, after the HSS receives the dual-access indication message, the original MME can be directly searched, and the identification of the original MME is sent to the gateway of the non-3 GPP access network through the new MME.

It should be noted that, after the gateway of the non-3 GPP access network receives the identifier of the original MME, the new MME is selected according to the identifier of the original MME by protocol agreement; if the agreement is not made, the HSS may also send a reselection indication and the identifier of the original MME to the gateway of the non-3 GPP access network through the new MME, so that the gateway of the non-3 GPP access network selects the original MME according to the reselection indication.

Referring to fig. 5, another embodiment of the access method of the wireless communication access network in the embodiment of the present invention includes:

501. the new MME receives an authentication and authorization request message sent by a gateway of a non-3 GPP access network;

user Equipment (UE) has access to a non-third generation partnership project (3 GPP) access network, an original mobility management network element (MME) serves the UE through the 3GPP access network, the original MME is registered to a Home Subscriber Server (HSS), when the UE accesses the 3GPP access network, the UE sends an access request message to a gateway of the non-3 GPP access network, and the gateway of the non-3 GPP access network selects a new MME supporting the authentication and authorization functions of the non-3 GPP access network to provide services for the UE and sends an authentication and authorization request message to the new MME.

502. The new MME sends the authentication and authorization request message to the HSS;

503. the new MME receives the identification of the original MME sent by the HSS;

since the UE is already connected to the 3GPP access network and the HSS already stores the original MME that provides services for the UE through the 3GPP access network, after receiving the authentication and authorization request message sent by the new MME, the HSS sends the identifier of the original MME to the new MME.

504. The new MME sends a response message to a gateway of the non-3 GPP access network, wherein the response message comprises the identification of the original MME, so as to indicate the gateway of the non-3 GPP access network to select the original MME according to the identification of the original MME;

and after receiving the identifier of the original MME sent by the HSS, the new MME sends a response message of the authentication and authorization request to a gateway of the non-3 GPP access network, wherein the response message comprises the identifier of the original MME so as to indicate the gateway of the non-3 GPP access network to select the original MME according to the identifier of the original MME.

In the embodiment of the invention, a new MME receives an authentication and authorization request message sent by a gateway of a non-3 GPP access network, the new MME sends the authentication and authorization request message to an HSS, the new MME receives an identifier of an original MME sent by the HSS, the new MME sends a response message to the gateway of the non-3 GPP access network, and the response message contains the identifier of the original MME, so that the MME accessed by the non-3 GPP access network is the same as the MME accessed by the 3GPP access network, the selected MME of the UE is the same when the UE performs a dual-access network under a converged network framework, and the user experience is improved.

Referring to fig. 6, another embodiment of the access method of the wireless communication access network in the embodiment of the present invention includes:

the embodiment of the invention is used for accessing User Equipment (UE) into a third generation partnership project (3 GPP) access network, wherein the UE is accessed into a non-3 GPP access network, an original mobility management network element (MME) provides service for the UE through the non-3 GPP access network, and the original MME is registered to a Home Subscriber Server (HSS).

601. The HSS receives an authentication and authorization request message sent by the new MME, wherein the authentication and authorization request message is sent by the new MME according to an access request message sent by the UE through the 3GPP access network;

the embodiments described above all describe implementation manners in which when a UE first accesses a 3GPP access network and then accesses a non-3 GPP access network, an MME is reselected by a gateway in the non-3 GPP access network, and in practical applications, the UE may also first access the non-3 GPP access network and then access the 3GPP access network. When the UE is accessed to the non-3 GPP access network, the non-3 GPP access network determines that an original MME serves the UE, when the UE is accessed to the 3GPP access network, the 3GPP access network also determines that a new MME serves the UE, a gateway of the 3GPP access network sends an authentication and authorization request message to the new MME, and the new MME sends the authentication and authorization request message to HSS for the HSS to store the new MME.

602. If the new MME is different from the original MME registered by the HSS, the HSS sends the identifier of the original MME to the new MME so that the new MME sends a reselection indication to the original MME according to the identifier of the original MME to indicate the original MME to send a session termination request to a gateway of the non-3 GPP access network;

after the HSS receives the authentication and authorization request message, it may further determine whether the new MME is the same as the original MME stored in the HSS, and if not, it indicates that the gateway of the non-3 GPP access network needs to be instructed to reselect the MME.

Specifically, the HSS stores the new MME first, and then sends the identifier of the original MME to the new MME, after the new MME receives the identifier of the original MME, because the UE first accesses the non-3 GPP access network corresponding to the original MME, the gateway of the non-3 GPP access network has already established a connection with the original MME and performs a session with the original MME, when it is necessary to instruct the gateway of the non-3 GPP access network to reselect the MME, it is necessary that the gateway of the non-3 GPP access network and the original MME terminate the session first, the new MME may also obtain the context content of the UE stored when the original MME performs the session with the non-3 GPP access network, so the new MME may send a context request message to the original MME, the context request message carries the identifier of the new MME, and the original MME may send a session termination request to the gateway of the non-3 GPP access network, the session termination request also carries the identifier of the new MME, so that the gateway of the non-3 GPP access network can select the new MME according to the identifier of the new MME.

It should be noted that the reselection indication may be a reselection indication signaling, which is used to explicitly indicate the original MME to send a session termination request to the gateway of the non-3 GPP access network, and indicate the gateway of the non-3 GPP access network to perform reselection; the reselection indication may also be an identifier of the new MME, and after the original MME receives the identifier of the new MME by agreement, the identifier of the new MME is sent to the gateway of the non-3 GPP access network, and a session with the gateway of the non-3 GPP access network is terminated, so as to indicate the gateway of the non-3 GPP access network to reselect the MME.

Optional step 603, sending, by the HSS, a registration cancellation message to the original MME, for canceling the registration information of the original MME;

optionally, because the HSS already sends the identifier of the original MME to the new MME, and the original MME instructs the gateway of the non-3 GPP access network to reselect the MME, it is worthless that the registration information of the original MME is stored in the HSS, so the HSS can send a registration cancellation message to the original MME to cancel the registration information of the original MME, save a storage space of the HSS, and avoid an unnecessary determination procedure when the UE is disconnected from the 3GPP access network and then re-accessed to the 3GPP access network, thereby improving efficiency of accessing the UE to the 3GPP access network.

In the embodiment of the invention, an HSS receives an authentication and authorization request message sent by a new MME, the authentication and authorization request message is sent by the new MME according to an access request message sent by UE through a 3GPP access network, if the new MME is different from an original MME registered by the HSS, the HSS sends an identifier of the original MME to the new MME, so that the new MME sends a reselection indication to the original MME according to the identifier of the original MME, so as to indicate the original MME to send a request for terminating a session to a gateway of a non-3 GPP access network, so that the gateway of the non-3 GPP access network terminates the session with the original MME, selects the new MME according to the identifier of the new MME and establishes the session. Therefore, when the UE is accessed to the non-3 GPP access network firstly, the gateway of the non-3 GPP access network determines an original MME and establishes session connection, when the UE is accessed to the 3GPP access network again, the 3GPP access network also determines a new MME, and when the HSS judges that the new MME is different from the original MME, a reselection process is triggered, so that the gateway of the non-3 GPP access network disconnects the session between the original MME, and selects the new MME according to the identification of the new MME, thereby ensuring that the MME selected by the gateway of the non-3 GPP access network is the same as the MME selected by the 3GPP access network, and improving user experience.

Referring to fig. 7, another embodiment of the method for accessing a wireless communication network according to the embodiment of the present invention includes:

701. The original MME receives a context request message sent by a new MME, the context request message carries a reselection indication and an identifier of the new MME, and the new MME is selected by a base station for the UE when the UE is accessed to the 3GPP access network;

and the HSS determines that the original MME and the new MME which are stored in the HSS are different, the HSS sends the identification of the original MME to the new MME, after receiving the identification of the original MME, the new MME obtains the address of the original MME according to the identification of the original MME and sends context request information to the original MME, and the context request information carries reselection indication and the identification of the new MME, so that the original MME finishes conversation with the gateway of the non-3 GPP access network and indicates the gateway of the non-3 GPP access network to reselect the MME.

Optional step 702, the old MME sending context content of the UE to the new MME;

since the original MME has already established a connection with the gateway of the non-3 GPP access network and may have performed a session, the original MME may send the context content of the UE to the new MME, so as to ensure that the integrity of data can be ensured when the gateway of the non-3 GPP access network is accessed to the new MME.

703. The original MME sends a session termination request to the non-3 GPP access gateway according to the reselection indication, wherein the session termination request carries the identification of the new MME, so that the gateway of the non-3 GPP access network terminates the session with the original MME and establishes the session with the new MME;

and after receiving the reselection indication, the original MME sends a session termination request to a gateway of the non-3 GPP access network to request the gateway of the non-3 GPP access network to terminate the session with the original MME, wherein the session termination request also carries an identifier of the new MME so as to indicate the gateway of the non-3 GPP access network to select the new MME according to the identifier of the new MME.

Optionally, by protocol agreement, after the gateway of the non-3 GPP access network receives the session termination request sent by the original MME and the identifier of the new MME, a reselection procedure is triggered, so that the gateway of the non-3 GPP access network selects the new MME according to the identifier of the new MME; or after sending the session termination request and the identifier of the new MME, the original MME may send a reselection indication to the gateway of the non-3 GPP access network, and instruct the gateway of the non-3 GPP access network to select the new MME according to the identifier of the new MME.

In the embodiment of the invention, an original MME receives a context request message sent by a new MME, the context request message carries a reselection indication and an identifier of the new MME, the original MME sends a session termination request to a gateway of the non-3 GPP access network according to the reselection indication, and the session termination request carries the identifier of the new MME, so that after the gateway of the non-3 GPP access network receives the session termination request, the gateway terminates the session with the original MME, selects the new MME according to the identifier of the new MME and establishes the session, so that the MME selected by the gateway of the non-3 GPP access network is the same as the MME selected by the gateway of the 3GPP access network, and the user experience is improved.

Referring to fig. 8, another embodiment of the method for accessing a wireless communication network according to the embodiment of the present invention includes:

801. A gateway of the non-3 GPP access network receives a session termination request sent by the original MME, wherein the session termination request carries an identifier of a new MME, and the new MME is selected by a base station for the UE when the UE is accessed to the 3GPP access network;

802. the gateway of the non-3 GPP access network disconnects the session with the original MME according to the session termination request;

because the gateway of the non-3 GPP access network and the original MME have already established a session, the session termination request carries the identifier of the new MME, that is, the gateway of the non-3 GPP access network is instructed to reselect the MME according to the identifier of the new MME, and the session with the original MME needs to be terminated.

803. The gateway of the non-3 GPP access network selects the new MME according to the identification of the new MME;

in order to make the MME selected by the non-3 GPP access network the same as the MME selected by the 3GPP access network, when the MME is reselected by the non-3 GPP access network, the new MME is selected according to the identifier of the new MME.

804. And the gateway of the non-3 GPP access network establishes a session with the new MME.

In the embodiment of the invention, a gateway of a non-3 GPP access network receives a session termination request sent by an original MME, the session termination request carries an identifier of a new MME, the new MME is the MME selected by a base station for the UE when the UE is accessed to the 3GPP access network, the gateway of the non-3 GPP access network disconnects the session with the original MME according to the session termination request, the gateway of the non-3 GPP access network selects the new MME according to the identifier of the new MME, and the gateway of the non-3 GPP access network establishes the session with the new MME, so that the MME of the selected gateway of the non-3 GPP access network is the same as the MME selected by the gateway of the 3GPP access network, and the user experience is improved.

Referring to fig. 9, another embodiment of the method for accessing a wireless communication network according to the embodiment of the present invention includes:

901. user Equipment (UE) acquires an identifier of an original mobility management network element (MME) providing service for the UE through a first access network, wherein the original MME has the authentication and authorization function of a non-third generation partnership project (3 GPP) access network;

in the above embodiments, the UE first accesses a first access network, the first access network determines a new MME, the UE then accesses a second access network, the second access network determines an original MME, and when it is determined according to the HSS that the new MME determined by the first access network is different from the original MME determined by the second access network, the first access network or the second access network is instructed to reselect the MME, so that the MME determined by the first access network is the same as the MME determined by the second access network, and uniform control of the UE is achieved. In practical application, when the UE accesses the second access network after accessing the first access network, the MME determined by the device of the first access network instructs the device of the second access network to select the MME, so that the second access network does not need to select an MME by itself, and a subsequent reselection process is also avoided.

Therefore, when the UE accesses the first access network, the UE acquires the identifier of the original MME determined by the device in the first access network, and instructs the second access network to select the target MME according to the identifier of the original MME when the UE accesses the second access network.

902. The UE sends an access request message to a second access network, wherein the access request message comprises an identifier of the original MME, and the identifier of the original MME is used for equipment of the second access network to select a target MME according to the identifier of the original MME;

when the UE needs to access the second access network, an access request message needs to be sent to the second access network, and the access request message needs to include an identifier of the original MME, so as to instruct the device of the second access network to select a target MME according to the identifier of the original MME, thereby avoiding the device of the second access network from selecting an MME by itself.

In the embodiment of the invention, User Equipment (UE) acquires an identifier of an original mobility management network element (MME) providing services for the UE through a first access network, the original MME has the authentication and authorization function of a non-third generation partnership project (3 GPP) access network, the UE sends an access request message to a second access network, the access request message comprises the identifier of the original MME, and the identifier of the original MME is used for selecting a target MME by equipment of the second access network. Therefore, when the UE accesses the second access network, the target MME is selected according to the identification of the original MME, the phenomenon that the MME selected by the equipment of the second access network is different from the MME selected by the equipment of the first access network due to the fact that the MME selected by the equipment of the second access network is avoided, and the unified control of the UE on the first access network and the second access network is realized.

The foregoing embodiment describes that a UE accesses a first access network, the UE acquires an identifier of an original MME, and the UE sends an access request message to a second access network, where the access request message includes the identifier of the original MME. In practical applications, the first access network may be a 3GPP access network, and the second access network may be a non-3 GPP access network, which is described in detail below, and referring to fig. 10, another embodiment of the access method of the wireless communication network in the embodiment of the present invention includes:

1001. the UE executes a tracking area update TAU flow or a 3GPP internal switching flow so that the UE selects the most appropriate original MME which is the MME closest to the UE and with idle load;

because the UE is usually a mobile device and the UE needs to perform MME handover during the moving process, in order to ensure that the determined original MME is the most suitable MME when the UE accesses the 3GPP access network, a TAU procedure or a 3GPP internal handover procedure needs to be performed first. When the UE is in an idle state, a TAU procedure may be executed, so that a 3GPP access network to which the UE can connect is an optimal access network; when the UE and the 3GPP access network process a connection state, the UE and the 3GPP access network can be switched to an optimal original MME according to the distance of MME around the test, wherein the optimal original MME is the MME which is closest to the UE and has an idle load.

1002. The UE receives the identifier of the original MME sent by the original MME, the original MME has the authentication and authorization function of a non-3 GPP access network, and the original MME is determined by a base station eNodeB to serve the UE;

optionally, after the UE accesses the original MME, the original MME may allocate an identifier to the UE, where the identifier may be a GUTI value, and the GUTI value includes an identifier of the original MME, so that the UE stores the GUTI value.

1003. The UE sends an access request message to a non-3 GPP access network, the access request message contains an identifier of the original MME, and the identifier of the original MME is used for a gateway of the UE accessing the non-3 GPP access network to select the target MME according to the identifier of the original MME;

the details are described with reference to S902.

In the embodiment of the invention, the first access network is a 3GPP access network, and the second access network is a non-3 GPP access network; before the UE accesses the 3GPP access network, a TAU flow or a 3GPP internal switching flow is executed, so that the original MME currently selected by the UE is the most appropriate MME, and the network communication efficiency of the UE is improved.

In the above embodiment, the first access network is a 3GPP access network, and the second access network is a non-3 GPP access network, in practical applications, the first access network may also be a non-3 GPP access network, and the second access network may be a 3GPP access network, and the following description specifically describes, with reference to fig. 11, another embodiment of the access method of the wireless communication network in the embodiment of the present invention includes:

1101. the UE sends an access request message to a gateway of the non-3 GPP access network;

optionally, the access request message may be internet key exchange second version IKEv2 signaling or wireless local area network control protocol WLCP signaling. For securing data signaling communication between the non-3 GPP access network and the UE.

1102. The UE receives response information sent by an original MME, the original MME is the MME selected by a gateway of the non-3 GPP access network, the response information is sent to the MME after an authentication and authorization request message sent by the MME is received by a Home Subscriber Server (HSS), and the response message is used for indicating the UE to successfully access the non-3 GPP access network;

in the process that the UE accesses the non-3 GPP access network, an authentication and authorization request message needs to be sent to the original MME, so that the MME forwards the authentication and authorization request message to the HSS, and after receiving the authentication and authorization request message, the HSS sends a response message to the UE through the original MME, so as to indicate that the UE is successfully accessed to the non-3 GPP access network.

1103. The UE receives the identification of the original MME sent by the original MME, the original MME has the authentication and authorization function of a non-3 GPP access network, and the original MME is determined by a gateway of the non-3 GPP access network to serve the UE;

the details are described with reference to S1002.

1104. The UE sends an access request message to a 3GPP access network, the access request message comprises an identifier of the original MME, and the identifier of the original MME is used for a base station eNodeB of the 3GPP access network to select a target MME according to the identifier of the original MME;

the details are described with reference to S1003.

In the embodiment of the invention, the first access network is a non-3 GPP access network, the second access network is a 3GPP access network, and when the UE is accessed to the non-3 GPP access network, the UE firstly sends an access request message for an encryption protocol to a gateway of the non-3 GPP access network, so that the safety of data signaling communication between the non-3 GPP access network and the UE is ensured, and the safety of wireless network communication of the UE is improved.

Referring to fig. 12, an embodiment of a gateway of a non-third generation partnership project 3GPP access network in the embodiment of the present invention includes:

a receiving unit 1201, configured to receive an access request message sent by a user equipment UE, where the UE has accessed a 3GPP access network, and an original mobility management network element MME provides a service for the UE;

the details are described with reference to S101.

A processing unit 1202, configured to select a new MME to serve the UE after the receiving unit 1201 receives the access request message;

the details are described with reference to S102.

A sending unit 1203, configured to send an authentication and authorization request message to the new MME;

the details are described with reference to S103.

The receiving unit 1201 is further configured to receive a response message sent by the new MME, where the response message includes an identifier of the old MME;

the details are described with reference to S104.

The processing unit 1202 is further configured to select the old MME to serve the UE according to the identifier of the old MME;

the details are described with reference to S105.

The processing unit 1202 is further configured to establish a session with the old MME;

details are described with reference to S106.

In another embodiment, the access request message includes dual access indication information, and the authentication and authorization request message includes the dual access indication information; wherein, the dual access indication information is used for indicating the UE to access the 3GPP access network and the non-3 GPP access network simultaneously

Details are described with reference to S201 and S203.

Referring to fig. 13, an embodiment of a home subscriber server HSS in the embodiment of the present invention includes:

a receiving unit 1301, configured to receive, through a new MME, an authentication and authorization request message sent by a gateway of the non-3 GPP access network, where the new MME is selected by the non-3 GPP access network after receiving the access request message sent by the UE;

details are described with reference to S301.

A sending unit 1302, configured to send the identifier of the original MME to the gateway of the non-3 GPP access network through the new MME, so that the gateway of the non-3 GPP access network selects the original MME according to the identifier of the original MME, and establishes a session with the original MME;

the details are described with reference to S302.

In another embodiment, the sending unit 1302 is specifically configured to:

if the new MME is different from the original MME, the sending unit sends the identifier of the original MME to a gateway of the non-3 GPP access network through the new MME;

the authentication and authorization request message contains the dual access indication information; the dual access indication information is used for indicating the UE to simultaneously access a 3GPP access network and a non-3 GPP access network;

the HSS further includes a processing unit 1303, where the sending unit 1302 is further specifically configured to:

after the processing unit 1303 obtains the identifier of the old MME according to the dual access indication information, send the identifier of the old MME to the gateway of the non-3 GPP access network through the new MME; alternatively, the first and second electrodes may be,

after the processing unit 1303 obtains the identifier of the original MME according to the dual access indication information, a reselection indication and the identifier of the original MME are sent to the gateway of the non-3 GPP access network through the new MME.

Details are described with reference to S402.

Referring to fig. 14, an embodiment of a mobility management network element MME in the embodiment of the present invention includes:

in the embodiment of the invention, the MME is a new MME.

A receiving unit 1401, configured to receive an authentication and authorization request message sent by a gateway of the non-3 GPP access network;

the details are described with reference to S501.

A sending unit 1402, configured to send the authentication and authorization request message to the HSS;

the details are described with reference to S503.

The sending unit 1402 is further configured to send a response message to the gateway of the non-3 GPP access network, where the response message includes the identifier of the original MME, so as to instruct the gateway of the non-3 GPP access network to select the original MME according to the identifier of the original MME;

details are described with reference to S504.

Referring to fig. 15, another embodiment of the home subscriber server HSS in the embodiment of the present invention includes:

A receiving unit 1501, configured to receive an authentication and authorization request message sent by a new MME, where the authentication and authorization request message is sent by the new MME according to an access request message sent by the UE through the 3GPP access network;

the details are described with reference to S601.

A sending unit 1502, configured to send, when the new MME is different from the old MME registered by the HSS, an identifier of the old MME to the new MME, so that the new MME sends a reselection indication to the old MME according to the identifier of the old MME, so as to instruct the old MME to send a session termination request to a gateway of the non-3 GPP access network;

in another embodiment, the reselection indication is attached to a context request message sent by the new MME to the old MME, where the reselection indication is a reselection indication signaling, and the reselection indication signaling carries an identifier of the new MME, or the reselection indication is an identifier of the new MME; and the session termination request carries the identifier of the new MME, so that the gateway of the non-3 GPP access network terminates the session with the original MME and selects the new MME according to the identifier of the new MME.

Details are described with reference to S602.

In another embodiment, the HSS further comprises a storage unit 1503 for storing the new MME;

the sending unit 1502 is further configured to:

after the storage unit 1503 stores the new MME, send a registration cancellation message to the old MME, cancel the registration information of the old MME;

the details are described with reference to S603.

Referring to fig. 16, another embodiment of a mobility management network element MME in the embodiment of the present invention includes:

in the embodiment of the invention, the MME is an original MME.

A receiving unit 1601, configured to receive a context request message sent by a new MME, where the context request message carries a reselection indication and an identifier of the new MME, and the new MME is an MME selected by a base station for the UE when the UE accesses the 3GPP access network;

details are described with reference to S701.

A sending unit 1602, configured to send a session termination request to the gateway of the non-3 GPP access network according to the reselection indication, where the session termination request carries an identifier of the new MME, so that the gateway of the non-3 GPP access network terminates the session with the original MME according to the session termination request and establishes the session with the new MME;

the details are described with reference to S703.

In another embodiment, the sending unit 1602 is further configured to: after the receiving unit receives the context request message sent by the new MME, the context content of the UE is sent to the new MME;

details are described with reference to S702.

Referring to fig. 17, another embodiment of the gateway of the non-third generation partnership project 3GPP access network in the embodiment of the present invention includes:

A receiving unit 1701, configured to receive a session termination request sent by the old MME, where the session termination request carries an identifier of a new MME, and the new MME is an MME selected by a base station for the UE when the UE accesses the 3GPP access network;

the details are described with reference to S801.

A processing unit 1702, configured to disconnect a session with the old MME according to the session termination request;

details are described with reference to S802.

The processing unit 1702 is further configured to select the new MME according to the identity of the new MME;

the details are described with reference to S803.

The processing unit 1702 is also configured to establish a session with the new MME.

Referring to fig. 18, an embodiment of a user equipment UE in the embodiment of the present invention includes:

a processing unit 1801, configured to acquire an identifier of an original mobility management network element MME that provides a service for the UE through a first access network, where the original MME has an authentication and authorization function of a non-third generation partnership project 3GPP access network;

the details are described with reference to S901.

A sending unit 1802, configured to send an access request message to a second access network, where the access request message includes an identifier of the original MME, and the identifier of the original MME is used for an apparatus of the second access network to select a target MME;

the details are described with reference to S902.

In another embodiment, the first access network is a 3GPP access network, the second access network is a non-3 GPP access network, and the device in the second access network is a gateway in the non-3 GPP access network;

the processing unit 1801 is further configured to execute a tracking area update TAU procedure or a 3GPP internal handover procedure, so that the UE selects a most suitable original MME, where the most suitable original MME is an MME closest to the UE and having an idle load;

the details are described with reference to S1001.

The UE further comprises: a receiving unit 1803, configured to receive the identifier of the old MME sent by the old MME.

The receiving unit 1803 is specifically configured to: and receiving the identification information of the UE, which is sent by the original MME, wherein the identification information of the UE comprises the identification of the original MME.

The details are described with reference to S1002.

In another embodiment, the first access device is a non-3 GPP access network, the second access network is a 3GPP access network, and the device of the second access network is a base station eNodeB.

The receiving unit 1803 is further specifically configured to: receiving response information sent by an original MME, wherein the original MME is the MME selected by a gateway of the non-3 GPP access network, the response information is sent to the MME after an authentication and authorization request message sent by the MME is received by a Home Subscriber Server (HSS), and the response message is used for indicating the UE to successfully access the non-3 GPP access network;

the details are described with reference to S1102.

The embodiments shown in fig. 12 and fig. 17 describe the specific structure of the gateway device of the non-third generation partnership project 3GPP access network from the perspective of functional units, and the following describes the specific structure of the gateway device of the non-3 GPP access network from the perspective of hardware in conjunction with the embodiment shown in fig. 19:

as shown in fig. 19, the gateway apparatus includes: a communications interface 1902, a processor 1903, and a memory 1904.

The gateway device to which embodiments of the invention relate may have more or fewer components than shown in fig. 19, may combine two or more components, or may have a different configuration or arrangement of components, each of which may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

A communication interface 1902, configured to receive an access request message sent by a UE, where the UE has accessed a 3GPP access network, and an original mobility management network element MME provides a service for the UE;

a processor 1903, configured to select a new MME to serve the UE after the communication interface 1902 receives the access request message;

a processor 1903, further configured to send an authentication and authorization request message to the new MME via the communication interface 1902;

the communication interface 1902 is further configured to receive a response message sent by the new MME, where the response message includes an identifier of the old MME;

the processor 1903 is further configured to select the old MME to serve the UE according to the identifier of the old MME;

the processor 1903 is further configured to establish a session with the old MME.

The communication interface 1902 may comprise one or more interfaces.

In another embodiment, the communication interface 1902 is further configured to receive a session termination request sent by the old MME, where the session termination request carries an identifier of a new MME, and the new MME is an MME selected by a base station for the UE when the UE accesses the 3GPP access network;

the processor 1903 is further configured to disconnect a session with the old MME according to the terminate session request;

the processor 1903 is further configured to select the new MME based on the identity of the new MME;

the processor 1903 is also configured to establish a session with the new MME.

The embodiments shown in fig. 13 and fig. 15 describe the specific structure of the home subscriber server HSS device from the perspective of functional units, and the following describes the specific structure of the HSS device from the perspective of hardware in conjunction with the embodiment shown in fig. 20:

as shown in fig. 20, the gateway apparatus includes: a communication interface 2002, a processor 2003, and a memory 2004.

Embodiments of the present invention relate to HSS devices that may have more or fewer components than those shown in fig. 20, may combine two or more components, or may have a different configuration or arrangement of components, each of which may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

A communication interface 2002, configured to receive, through a new MME, an authentication and authorization request message sent by a gateway of the non-3 GPP access network, where the new MME is selected by the non-3 GPP access network after receiving the access request message sent by the UE;

a processor 2003, configured to send, through the communication interface 2002, the identifier of the old MME to the gateway of the non-3 GPP access network through the new MME, so that the gateway of the non-3 GPP access network selects the old MME according to the identifier of the old MME, and establishes a session with the old MME;

in another embodiment, the processor 2003 is specifically configured to:

if the new MME is different from the old MME, sending the identifier of the old MME to the gateway of the non-3 GPP access network through the new MME via the communication interface 2002;

the processor 2003 is further specifically configured to:

after the processor 2003 obtains the identifier of the old MME according to the dual access indication information, the identifier of the old MME is sent to the gateway of the non-3 GPP access network through the new MME via the communication interface 2002; alternatively, the first and second electrodes may be,

after the processor 2003 obtains the identifier of the old MME according to the dual access indication information, a reselection indication and the identifier of the old MME are sent to the gateway of the non-3 GPP access network through the new MME via the communication interface 2002.

In another embodiment, the communication interface 2002 is further configured to receive an authentication and authorization request message sent by a new MME, the authentication and authorization request message being sent by the new MME according to an access request message sent by the UE through the 3GPP access network;

the processor 2003 is further configured to send, when the new MME is different from the old MME registered by the HSS, the identifier of the old MME to the new MME through the communication interface 2002, so that the new MME sends a reselection indication to the old MME according to the identifier of the old MME, so as to instruct the old MME to send a session termination request to a gateway of the non-3 GPP access network;

In another embodiment, the storing unit 2004 is configured to store the new MME;

the processor 2003 is also configured to:

after the memory 2004 stores the new MME, it sends a deregistration message to the old MME through the communication interface 2002, and cancels the registration information of the old MME.

Communication interface 2002 may comprise one or more interfaces, among others.

The embodiments shown in fig. 14 and fig. 16 describe the specific structure of the mobility management network element MME device from the perspective of functional units, and the following describes the specific structure of the MME device from the perspective of hardware in conjunction with the embodiment shown in fig. 21:

as shown in fig. 21, the MME device includes: a communication interface 2102, a processor 2103, and a memory 2104.

The MME device to which embodiments of the present invention relate may have more or fewer components than shown in fig. 21, may combine two or more components, or may have a different configuration or arrangement of components, each of which may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.

In the embodiment of the invention, the MME is a new MME.

A communication interface 2102, configured to receive an authentication and authorization request message sent by a gateway of a non-3 GPP access network;

a processor 2103 configured to send the authentication and authorization request message to the HSS via the communication interface 2102;

the communication interface 2102 is further configured to receive an identity of the old MME sent by the HSS;

the details are described with reference to S503.

The processor 2103 is further configured to send a response message to the gateway of the non-3 GPP access network through the communication interface 2102, where the response message includes an identifier of the original MME, so as to instruct the gateway of the non-3 GPP access network to select the original MME according to the identifier of the original MME;

in another embodiment, the MME is an old MME.

The communication interface 2102 is further configured to receive a context request message sent by a new MME, where the context request message carries a reselection indication and an identifier of the new MME, and the new MME is an MME selected by a base station for the UE when the UE accesses the 3GPP access network;

the processor 2103 is further configured to send, according to the reselection indication, a session termination request to the gateway of the non-3 GPP access network through the communication interface 2102, where the session termination request carries an identifier of the new MME, so that the gateway of the non-3 GPP access network terminates the session with the original MME according to the session termination request and establishes the session with the new MME;

in another embodiment, the processor 2103 is further configured to send context content of the UE to the new MME through the communication interface 2102 after receiving the context request message sent by the new MME.

The embodiment shown in fig. 18 illustrates a specific structure of a user equipment UE from the perspective of functional units, and the following describes a specific structure of a UE from the perspective of hardware in conjunction with the embodiment shown in fig. 22:

as shown in fig. 22, the UE includes: a transmitter 2201, a receiver 2202, a processor 2203, and a memory 2204.

The UE to which embodiments of the invention relate may have more or fewer components than shown in fig. 22, may combine two or more components, or may have a different configuration or arrangement of components, each of which may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

A processor 2203, configured to obtain an identifier of an original mobility management network element MME that provides a service for the UE through a first access network, where the original MME has an authentication and authorization function of a non-third generation partnership project 3GPP access network;

a transmitter 2201, configured to send an access request message to a second access network, where the access request message includes an identifier of the original MME, and the identifier of the original MME is used for a device of the second access network to select a target MME;

the processor 2203 is further configured to execute a tracking area update TAU procedure or a 3GPP internal handover procedure, so that the UE selects a most suitable original MME, where the most suitable original MME is an MME closest to the UE and having an idle load;

the receiver 2202 is configured to receive the identifier of the old MME sent by the old MME.

The receiver 2202 is specifically configured to: and receiving the identification information of the UE, which is sent by the original MME, wherein the identification information of the UE comprises the identification of the original MME.

The receiver 2202 is further specifically configured to: receiving response information sent by an original MME, wherein the original MME is the MME selected by a gateway of the non-3 GPP access network, the response information is sent to the MME after an authentication and authorization request message sent by the MME is received by a Home Subscriber Server (HSS), and the response message is used for indicating the UE to successfully access the non-3 GPP access network.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. Specifically, the implementation may be realized by software plus necessary general hardware, where the general hardware includes a general-purpose integrated circuit, a general-purpose CPU, a general-purpose memory, general-purpose components, and the like, and of course, the implementation may also be realized by dedicated hardware including an application-specific integrated circuit, a dedicated CPU, a dedicated memory, dedicated components, and the like.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An access method of a wireless communication network, the method comprising:

2. The method of claim 1, wherein the access request message includes dual access indication information, and wherein the authentication and authorization request message includes the dual access indication information;

3. An access method of a wireless communication network, wherein the method is used for accessing a non-third generation partnership project (3 GPP) access network by a User Equipment (UE), the UE has accessed to a 3GPP access network, an original mobility management network element (MME) provides services for the UE through the 3GPP access network, and the original MME is registered to a Home Subscriber Server (HSS), the method comprises:

4. The method of claim 3, wherein the HSS sending the identity of the old MME to a gateway of the non-3 GPP access network via the new MME comprises:

5. The method of claim 3, wherein the authentication and authorization request message comprises dual access indication information; the dual access indication information is used for indicating the UE to simultaneously access a 3GPP access network and a non-3 GPP access network;

6. An access method of a wireless communication network, the method being used for accessing a non-third generation partnership project (3 GPP) access network by a User Equipment (UE), the UE having accessed the 3GPP access network, an original Mobility Management Element (MME) serving the UE through the 3GPP access network, and the original MME having registered to a Home Subscriber Server (HSS), the method comprising:

the new MME receives the identification of the original MME sent by the HSS;

7. An access method of a wireless communication network, wherein the method is used for accessing a third generation partnership project (3 GPP) access network to a User Equipment (UE), the UE has accessed a non-3 GPP access network, an original mobility management network element (MME) provides services for the UE through the non-3 GPP access network, and the original MME is registered to a Home Subscriber Server (HSS), the method comprises:

8. The method according to claim 7, wherein the reselection indication is attached to a context request message sent by the new MME to the old MME, and the reselection indication is a reselection indication signaling carrying an identifier of the new MME, or the reselection indication is an identifier of the new MME;

9. The method of claim 7 or 8, wherein after the HSS stores the new MME, the method further comprises:

10. An access method of a wireless communication network, wherein the method is used for accessing a third generation partnership project (3 GPP) access network to a User Equipment (UE), the UE has accessed a non-3 GPP access network, an original mobility management network element (MME) provides services for the UE through the non-3 GPP access network, and the original MME is registered to a Home Subscriber Server (HSS), the method comprises:

11. The method of claim 10, wherein after the old MME receives the context request message sent by the new MME, the method further comprises:

and the original MME sends the context content of the UE to the new MME.

12. An access method of a wireless communication network, wherein the method is used for accessing a third generation partnership project (3 GPP) access network to a User Equipment (UE), the UE has accessed a non-3 GPP access network, an original mobility management network element (MME) provides services for the UE through the non-3 GPP access network, and the original MME is registered to a Home Subscriber Server (HSS), the method comprises:

13. An access method of a wireless communication network, the method comprising:

14. The method of claim 13, wherein the first access network is a 3GPP access network, the second access network is a non-3 GPP access network, and the device in the second access network is a gateway in the non-3 GPP access network; alternatively, the first and second electrodes may be,

15. The method of claim 13 or 14, wherein the UE obtaining the identity of the old MME serving the UE through a first access network comprises:

16. The method of claim 15, wherein the UE receiving the identity of the MME sent by the old MME comprises: and the UE receives the identification information of the UE sent by the original MME, wherein the identification information of the UE comprises the identification of the original MME.

17. A gateway for a non-third generation partnership project, 3GPP, access network, the gateway comprising:

18. The gateway according to claim 17, wherein said access request message includes dual access indication information, and said authentication and authorization request message includes said dual access indication information;

19. A home subscriber server, HSS, wherein the HSS is configured to enable a UE to access a non-third generation partnership project, 3GPP, access network, the UE having accessed a 3GPP access network, an original mobility management element, MME, serving the UE through the 3GPP access network, and the original MME having registered with the HSS, the HSS comprising:

20. The HSS of claim 19, wherein the sending unit is specifically configured to:

21. The HSS of claim 19, wherein the authentication and authorization request message comprises dual access indication information; the dual access indication information is used for indicating the UE to simultaneously access a 3GPP access network and a non-3 GPP access network;

the sending unit is further specifically configured to:

22. A mobility management network element, MME, when the MME is a new MME, wherein the new MME is configured for a user equipment, UE, to access a non-third generation partnership project, 3GPP, access network, the UE having accessed a 3GPP access network, an old MME serving the UE through the 3GPP access network, and the old MME having registered with a home subscriber server, HSS, the new MME comprising:

23. A home subscriber server HSS, wherein the HSS is configured to enable a UE to access a third generation partnership project 3GPP access network, the UE having accessed a non-3 GPP access network, an original mobility management element MME serving the UE through the non-3 GPP access network, and the original MME having registered with the HSS, the HSS comprising:

24. The HSS of claim 23, wherein the reselection indication is attached to a context request message sent by the new MME to the old MME, and is a reselection indication signaling carrying an identifier of the new MME, or is an identifier of the new MME;

25. The HSS of claim 23 or 24, wherein the HSS further comprises a storage unit for storing the new MME;

the sending unit is further configured to:

26. A mobility management network element MME, wherein when the MME is an original MME, the original MME is configured to enable a UE to access a third generation partnership project 3GPP access network, the UE has access to a non-3 GPP access network, the original MME provides a service for the UE through the non-3 GPP access network, and the original MME has been registered to a home subscriber server HSS, and the original MME comprises:

27. The MME of claim 26, wherein the sending unit is further configured to:

28. A gateway of a non-third generation partnership project (3 GPP) access network, the gateway is used for a User Equipment (UE) to access the 3GPP access network, the UE has access to the non-3 GPP access network, an original mobility management network element (MME) provides services for the UE through the non-3 GPP access network, and the original MME is registered to a Home Subscriber Server (HSS), the gateway comprises:

29. A User Equipment (UE), the UE comprising:

30. The UE of claim 29, wherein the first access network is a 3GPP access network, the second access network is a non-3 GPP access network, and the device in the second access network is a gateway in the non-3 GPP access network; alternatively, the first and second electrodes may be,

31. The UE of claim 29 or 30, wherein the UE further comprises:

32. The UE of claim 31, wherein the receiving unit is specifically configured to: