WO2014000156A1

WO2014000156A1 - Network access method, network device access point device and mobility management entity device

Info

Publication number: WO2014000156A1
Application number: PCT/CN2012/077525
Authority: WO
Inventors: 李欢; 周青
Original assignee: 华为技术有限公司
Priority date: 2012-06-26
Filing date: 2012-06-26
Publication date: 2014-01-03
Also published as: CN103621158B; CN103621158A

Abstract

The present invention is applied to the technical field of communications, and provided are a network access method, a network device access point device and an MME device. The method comprises: a user equipment access point (UAP) obtaining a user identifier of user equipment (UE); sending to an MME a first PDN connection establishment request used for establishing a PDN connection for the UE, the first PDN connection establishment request containing the user identifier of the UE and a user identifier of the UAP; and receiving a first PDN connection establishment response sent by the MME, and establishing the context of the PDN connection of the UE, so that the UE can access a PDN via an allocated IP address, a mobile operator can separately charge or legally monitor each UE, and the UE can obtain resources allocated thereto by a mobile network through the allocated IP address and a QoS policy thereof, thereby increasing the security and the quality of service of the UE.

Description

Network access method, network device access point device, and mobility management entity device

Technical field

The present invention belongs to the field of communication technologies, and in particular, to a network access method, a network device access point device, and a mobility management entity device.

Background technique

In the prior art, in order to improve the stability and robustness of the mobile network, some terminal devices can be used as user equipments (User Equipment, UE) for mobile communication, also as WiFi for wireless networks (Wireless Fidelity, also known as 802.11b, wireless fidelity) access points, these terminal devices are called UE Access Points (UE Access Point, UAP), and the UE can access the mobile network through these UAPs. For example, a UE having both mobile network access capability and WiFi access capability can access the UAP hotspot coverage area before the UE can access the mobile network (for example, a 3GPP network or Non-3GPP network) established packet data network (Packet Data Network, PDN) connect and enjoy the services provided by the mobile network. When the UE enters the UAP hotspot coverage area, if the signal of the mobile network base station is weakened, the UE can access the mobile network through the UAP and continue to access the network.

In a specific communication process, after the UE accesses the mobile network through the UAP, the data packet sent and received by the UE passes through the UAP and interacts with the external network, such as the PDN, by using the packet data connection of the UAP. In this case, the mobile network does not perceive the presence of the UE. Therefore, it is impossible to allocate independent resources to the UE, and it is difficult to guarantee the quality of service (Quality Of Service, QoS).

technical problem

The embodiments of the present invention provide a network access method, a network device access point device, and a mobility management entity device, so as to better ensure the quality of service of the UE for network access through the UAP.

Technical solution

In one aspect, an embodiment of the present invention provides a network access method, where the method includes:

The user equipment access point UAP acquires the user identifier of the user equipment UE;

Sending, to the mobility management entity MME, a first PDN connection establishment request for establishing a packet data network PDN connection for the UE, where the first PDN connection establishment request includes a user identifier of the UE and a user identifier of the UAP ;

Receiving a first PDN connection setup response sent by the MME, establishing a PDN connection context of the UE.

On the other hand, an embodiment of the present invention further provides a user equipment access point device, including:

a user identifier obtaining unit, configured to acquire a user identifier of the user equipment UE;

a first connection establishment message sending and receiving unit, configured to send, to the mobility management entity MME, a first PDN connection establishment request for establishing a PDN connection for the UE, where the first PDN connection establishment request includes a user identifier of the UE And receiving, by the user identifier of the UAP, a first PDN connection establishment response sent by the MME;

A connection establishing unit is configured to establish a PDN connection context of the UE.

In another aspect, the embodiment of the present invention further provides a network access method, where the method includes:

Receiving, by the user equipment access point UAP, a first PDN connection establishment request for establishing a packet data network PDN connection for the user equipment UE, where the first PDN connection establishment request includes the user identifier of the UE and the user identifier of the UAP ;

Sending a create session request to the packet data network PDN gateway, the create session request including a user identifier of the UE;

Receiving a create session request response sent by the PDN gateway;

Establishing a PDN connection context of the PDN connection of the UE, and transmitting a first PDN connection establishment response to the UAP.

In another aspect, the embodiment of the present invention further provides a mobility management entity device, including:

a first connection establishment message sending and receiving unit, configured to receive a first PDN connection establishment request sent by the user equipment access point UAP for establishing a packet data network PDN connection for the user equipment UE, where the first PDN connection establishment request includes Describe the user identifier of the UE and the user identifier of the UAP;

Creating a session messaging unit, configured to send a create session request to the PDN gateway, where the create session request includes a user identifier of the UE, and receive a create session request response sent by the PDN gateway;

a second connection establishing unit, configured to establish a PDN connection context of the UE;

The first connection establishment message sending and receiving unit is further configured to send a first PDN network connection establishment response to the UAP.

Beneficial effect

With the method and the device provided by the embodiment of the present invention, after the UE establishes a WiFi connection through the WiFi connection, the UAP acquires the user identifier of the UE, and sends a PDN connection establishment request to the MME to separately establish a PDN connection for the UE. Therefore, the mobile network can allocate independent resources to the UE, including the IP address, the QoS policy, and the charging rule, which can better guarantee the quality of service of the UE after accessing the network through the UAP. At the same time, the independent management of the UE by the mobile network can be better realized.

DRAWINGS

1 is a flowchart of an implementation of a network access method according to an embodiment of the present invention;

2 is a flowchart of implementing a network access method according to an embodiment of the present invention;

3 is a flowchart of implementing a network access method according to an embodiment of the present invention;

4 is a flowchart of implementing a network access method according to an embodiment of the present invention;

FIG. 5 is an interaction flowchart of a network access method according to an embodiment of the present invention;

FIG. 6 is an interaction flowchart of a network access method according to an embodiment of the present invention;

FIG. 7 is an interaction flowchart of a network access method according to an embodiment of the present invention;

FIG. 8 is an interaction flowchart of a network access method according to an embodiment of the present invention;

9 is a schematic structural diagram of a user equipment access point device according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a user equipment access point device according to an embodiment of the present disclosure;

11 is a schematic structural diagram of a user equipment access point device according to an embodiment of the present invention;

11a is a schematic structural diagram of a user identifier obtaining unit according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a mobility management entity device according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a mobility management entity device according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a mobility management entity device according to an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of a mobility management entity device according to an embodiment of the present invention.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The core network of the wireless evolution network mainly includes mobility management entities (Mobility Management). Entity, MME), Serving Gateway (SGW), PDN Gateway (PDN) Gateway, PGW) three functional bodies. The MME is responsible for the non-access stratum (Non-access) between the UAP and the UE. Stratum, NAS) signaling encryption, assigning temporary user IDs to UAP/UE, selecting core network elements such as SGW and PDN gateway, providing roaming, tracking, security, etc., for example, corresponding to the current universal mobile communication system (Universal Mobile Telecommunications System, UMTS) Internal Service GPRS Support Node (Serving GPRS SUPPORT Control plane part of NODE, SGSN). SGW is a local evolved base station (evolved Node) B, eNodeB) switches the mobility anchor and provides lawful interception related functions. The PDN gateway is responsible for user address allocation, policy control and enforcement of charging rules, and lawful interception related functions. Home network server (Home Subscriber Server, HSS) is used to store subscriber subscription data. Policy Charging Rule (Policy Charging Rule) Function, PCRF) provides policy and charging control rules. Embodiments of the present invention can be applied to a core network of a wireless evolved network.

In the network access method provided by the implementation of the present invention, the UE accesses the mobile network through the UAP, and establishes a PDN connection for the UE, which is easy to ensure the quality of service of the UE. The mobile network may be a 3GPP network, a non-3GPP network, or the like. Between the UE and the UAP can be a wireless LAN connection, such as a WiFi connection, WAPI (Wireless) LAN Authentication and Privacy Infrastructure, WLAN authentication and privacy infrastructure), etc.

FIG. 1 is a flowchart showing an implementation process of a network access method according to an embodiment of the present invention, which is described in detail as follows:

In step S101, the UAP acquires the user identifier of the UE.

The UAP can obtain the user identity of the UE through a wireless local area network connection with the UE. In addition to the user ID, the UAP can also obtain the access point name of the UE (Access Point). Name, APN), the APN can be used to indicate the access point of the PDN connection that is requested to be established, and the MME searches for the data gateway corresponding to the APN according to the APN.

The user identifier of the UE may be an international mobile subscriber identity (International Mobile Subscriber) Identification, IMSI), Mobile Services International Integrated Services Digital Network (Integrated Services Digital) Network, ISDN) number (Mobile Station international ISDN Number, MSISDN), International Mobile Equipment Identity (IMEI), or Media Access Control (Media Access) Control, MAC) address, etc.

The UAP may obtain the user identifier of the UE by receiving the PDN connection establishment request sent by the UE, for example, the UAP receives the second PDN connection establishment request sent by the UE through the WiFi connection, and the second PDN connection establishment request includes the user identifier of the UE. Or the user identity of the UE and the APN of the UE.

Alternatively, the UAP may receive a third PDN connection establishment request sent by the UE through the WiFi connection, where the third PDN connection establishment request includes the first identifier of the UE, or the first identifier of the UE and the APN, and then the UAP is according to the UE. An identifier assigns a user identity to the UE.

In addition, you can also use Extensible Authentication Protocol (Extensible Authentication Protocol). The protocol (EAP) requests to obtain the user identifier of the UE. For example, the UAP sends an EAP request to the UE, and receives an EAP response sent by the UE. The EAP response includes the user identifier of the UE, or the user identifier and the APN of the UE. Alternatively, the UAP may send an EAP request to the UE, and receive an EAP response sent by the UE, where the EAP response includes the first identifier of the UE, or the first identifier of the UE and the APN, and allocates a user identifier to the UE.

In addition, the user identity of the UE can also be obtained through the dynamic host configuration protocol DHCP request, for example, the UAP receives the dynamic host configuration protocol sent by the UE (Dynamic Host) Configuration a DHCP request, where the DHCP request includes the user identifier of the UE, or the user identifier of the UE and the APN of the UE; or the UAP receives the DHCP request sent by the UE, where the DHCP request includes the first identifier of the UE, Or the first identifier of the UE and the APN, and assign a user identifier to the UE.

The first identifier in the embodiment of the present invention may be a MAC address of the UE, an identifier such as an IP address used in the WLAN. The UAP may identify the UE in the mobile network without using the first identifier, but allocate the user identifier for the mobile network to the UE according to the first identifier. For example, when the UE is registered in the UAP and is not registered in the mobile network, the first identifier may be the MAC address of the UE, and the UAP may allocate an IMSI number to the UE for performing operations such as establishing a PDN connection for the UE.

In the step S102, the UAP sends a first PDN connection establishment request for establishing a PDN connection for the UE to the MME, where the first PDN connection establishment request includes the user identifier of the UE and the user identifier of the UAP. In the prior art, the UAP itself acts as a user equipment, and can perform existing processes such as attaching, detaching, and establishing a PDN connection. When the UAP's own PDN connection is established, the user identifier included in the PDN connection establishment request sent by the UAP to the MME is the UAP's own user identifier. Different from the prior art, the first PDN connection establishment request sent in step 102 includes the user identifier of the UE and the user identifier of the UAP, and is used to establish a PDN connection of the UE. Here, the user identifier of the UAP is used to notify the MME that the connection establishment request is a message sent by the user equipment that has been successfully attached, and the user identifier of the UE is used to notify the MME to establish a PDN connection for the UE.

In step S103, the UAP receives the first PDN connection setup response sent by the MME, and establishes a PDN connection context of the UE. The UAP establishes the PDN connection context of the UE, that is, the UAP establishes a PDN connection for the UE. The PDN connection context is used to characterize the corresponding PDN connection. The PDN connection is used by the UE to access the PDN through the UAP.

After the PDN connection of the UE is established, the mobile network may use the PDN connection context of the UE to allocate independent resources, such as an IP address, a QoS policy, and a charging rule, to the UE, and provide the UE with PDN access that meets the QoS requirements of the UE. Service, easy to guarantee the quality of service of the UE. At the same time, the UE is managed according to the PDN connection context established for the UE, thereby ensuring independent management of the UE by the mobile network operator.

After the PDN connection of the UE is established on the mobile network by the UAP, the PDN connection can be released when needed. For example, when the UE leaves the hotspot range of the UAP, the UE sends a connection release request or a detach request to the UAP, thereby triggering the UAP. The PDN connection release request is sent to the MME, or the UAP actively sends a PDN connection release request to the MME. Release the PDN connection of the UE, which can be implemented by the following steps:

(a) The UAP sends a first PDN connection release request to the MME, where the first PDN connection release request includes the user identifier of the UE and the user identifier of the UAP. The first PDN connection release request is used to release the PDN connection of the UE. The user identifier of the UAP is used to notify the MME that the request is a request sent by the UAP.

(b) The UAP receives the first PDN connection release response sent by the MME, and deletes the PDN connection context of the UE.

In this embodiment, the PDN connection of the UE can be managed independently. For example, when multiple UEs establish a PDN connection through the UAP, when the PDN connection of one UE needs to be released, the connection of the UE can be released separately without affecting other UEs, and more flexible management is implemented.

On the basis of performing steps S101 to S103, when the UAP wants to release the PDN connection of the UE, the UAP may send a detach request to the MME. For example, when the UAP itself needs to be detached as a user equipment, it is also necessary to release the PDN connection of the already connected UE. This can be achieved by the following steps:

(c) The UAP sends a detach request to the MME, where the detach request includes the user identifier of the UE and the user identifier of the UAP, or the user identifier including the UAP. The detach request sent by the UAP may be used to release the PDN connection of the UE established through the UAP. When the detach request includes the user identifier of the UE and the user identifier of the UAP, the MME may release the PDN connection of the UE established by the UAP according to the user identifier of the UE. When the detach request includes the user identifier of the UAP, the MME may release the PDN connection of the UE established through the UAP according to the user identifier of the UAP.

(d) The UAP receives the detach accept message sent by the MME.

(e) The UAP deletes the PDN connection context of the UE.

On the basis of performing step S101 to step S103, after the UE establishes a PDN connection through the UAP, if the UAP location changes, the location of the UE may also be updated by the location update procedure. Location updates can be achieved by the following steps:

(f) The UAP sends a location update request for updating the location of the UE to the MME, where the location update request includes the user identifier of the UAP, or the user identifier of the UE and the user identifier of the UAP. When the location of the UAP needs to be updated, the location of the UE also needs to be updated accordingly, for updating the location update request of the UAP location, and may also be a location update request for updating the location of the UE.

(g) The UAP receives the location update response sent by the MME.

In the above-described embodiment, after the UE establishes a PDN connection on the mobile network by using the UAP, the UAP may further send a PDN connection release or detach request to the MME to release the UAP and the MME as the basis of the steps S101 to S103. The resources allocated by the UE. When the location of the UE or the UAP is updated, the location update request is sent to the MME through the UAP, and the location of the UE or the UAP is updated in time.

It can be understood by those skilled in the art that after the PDN connection of the UE is established, the location of the UE may need to be updated before the PDN connection of the UE is released, and the location of the UE may not need to be updated.

FIG. 2 is a flowchart of a network access method according to an embodiment of the present invention. After receiving a PDN connection establishment request sent by a UE, the MME establishes a PDN connection context for the UE. For the implementation process of the UAP corresponding to the implementation process of the MME, reference may be made to the process of FIG. 1.

In the step S201, the MME receives the first PDN connection establishment request that is sent by the UAP to establish a PDN connection for the UE, where the first PDN connection establishment request includes the user identifier of the UE and the user identifier of the UAP.

In step S202, the MME sends a create session request to the PDN gateway, where the create session request includes the user identity of the UE.

The MME may acquire the subscription data of the UE from the HSS according to the user identifier in the first PDN connection establishment request, and select the PDN gateway according to the APN in the subscription data. Alternatively, when the first PDN connection request includes the APN of the UE, the MME may select the PDN gateway according to the APN. The sending creation session request is sent to the PDN gateway via the SGW, and the creation of the session request includes the user identifier of the UE, and may also include the APN of the UE.

After receiving the request to create a session, the PDN gateway initiates an IP connection to access the network (IP-Connectivity Access). Network, IP-CAN) session establishment, establish an IP-CAN session with the PCRF, and obtain the policy and charging control corresponding to the PDN connection of the UE (Policy Charging) Control, PCC) rules, and create a PDN connection context of the UE, send a create session request response via the SGW to the MME. The creation session request response may include an IP address, QoS information, and the like assigned to the UE.

In step S203, the MME receives a create session request response sent by the PDN gateway.

In step S204, the MME establishes a PDN connection context of the UE, and sends a first PDN connection establishment response to the UAP.

After the PDN connection context is established for the UE, the mobile network can allocate independent resources, such as IP addresses, QoS policies, and charging rules, to the UE through the UAP, and provide the UE with the PDN access service that meets its QoS requirements, which is easy to ensure the UE. service quality. At the same time, the UE is managed according to the PDN connection context established for the UE, and the independent management of the UE by the mobile network operator is easily realized.

FIG. 3 is a flowchart of a network access method implemented by an MME according to an embodiment of the present invention, which is described in detail below. For the implementation process of the UAP corresponding to the implementation process of the MME, reference may be made to the process of FIG. 1.

In step S301, the MME receives a first PDN connection establishment request for establishing a PDN connection for the UE, and the first PDN connection establishment request includes a user identifier of the UE and a user identifier of the UAP.

In step S302, the MME sends a create session request to the PDN gateway, where the create session request includes the user identity of the UE.

In step S303, the MME receives a create session request response sent by the PDN gateway.

In step S304, the MME establishes a PDN connection context of the UE, and sends a first PDN connection establishment response to the UAP.

In step S305, the MME establishes an association relationship between the UAP and the UE by using the user identifier of the UAP and the user identifier of the UE.

After step 305, step 306 or step 307 can be performed.

In step S306, the MME receives the location update request of the UAP-containing user identifier sent by the UAP, performs location update on the UE according to the association relationship, and sends a location update response message to the UAP. Through step 306, when the UAP location is updated, the location of the UE associated with it is updated in time. In addition, when multiple UEs are associated with the UAP, the PDN connection of multiple UEs can be released by receiving a detach message, which saves signaling.

In step S307, the MME receives the detach request of the UAP-containing user identifier sent by the UAP, releases the PDN connection of the UE according to the association relationship between the established UAP and the UE, and sends a detach accept message to the UAP. In step 307, when the UAP is detached, the PDN connection of the UE associated with the UAP is released, thereby avoiding waste of resources. In addition, when multiple UEs are associated with the UAP, the PDN connection of multiple UEs can be released by receiving a detach message, which saves signaling.

It can be understood that after receiving the location update request of the UAP, the location of the UE is updated, and then the detach request is received to release the PDN connection of the UE.

According to the established relationship between the UAP and the UE, releasing the PDN connection of the UE can be implemented by:

(1) The MME determines the user identifier of the UE to be detached according to the association between the UAP and the UE and the user identifier of the UAP, and sends a delete session request message to the PDN gateway, where the delete session request message includes the user identifier of the UE.

(2) The MME receives the delete session request response sent by the PDN gateway.

(3) The MME deletes the PDN connection context of the UE.

In the embodiment of the present invention, when receiving the detach request including the UAP user identifier sent by the UAP, the MME may determine that the PDN connection of the UE needs to be released according to the association relationship between the established UAP and the UE, thereby releasing the UE. PDN connection.

According to the association relationship between the UAP and the UE, the location update of the UE can be implemented by:

The UE that needs the location update is determined according to the association relationship between the UAP and the UE and the user identifier of the UAP, and the location information of the UE is updated by using the location update information of the UAP included in the location update request.

FIG. 4 is a flowchart of a network access method implemented by an MME according to an embodiment of the present invention, which is described in detail as follows:

In step S401, the MME receives a first PDN connection establishment request for establishing a PDN connection for the user equipment UE, and the first PDN connection establishment request includes the user identifier of the UE and the user identifier of the UAP.

In step S402, the MME sends a create session request to the PDN gateway, where the create session request includes the user identity of the UE.

In step S403, the MME receives a create session request response sent by the PDN gateway.

In step S404, the MME establishes a PDN connection context of the UE, and sends a first PDN connection establishment response to the UAP.

In step S405, the MME receives a detach request sent by the UAP to release the PDN connection of the UE, where the detach request includes the user identifier of the UAP and the user identifier of the UE.

In step S406, the MME releases the PDN connection of the UE.

In step S407, the MME sends a detach accept message to the UAP.

In this embodiment, the MME does not establish an association relationship between the UAP and the UE. When the MME receives the detach request including the user identifier of the UAP and the user identifier of the UE, the MME releases the PDN connection of the UE according to the user identifier of the UE. The MME also detaches the UAP itself after receiving the detach request.

In another embodiment of the present invention, after the MME establishes a PDN connection context for the UE by using the UAP, the MME receives the first PDN connection release request sent by the UAP to release the PDN connection of the UE, and the first PDN connection release request is received. When the user identifier of the UE and the user identifier of the UAP are included, the MME releases the first PDN connection of the UE, and sends a first PDN connection release response to the UAP. In this embodiment, the release of the PDN connection to the UE is achieved by transmitting a PDN connection release request.

In another embodiment of the present invention, after the MME establishes a PDN connection context for the UE by using the UAP, the MME receives a location update request sent by the UAP for updating the location of the UE, and the location update request includes the updated location of the UAP. When the user identifier of the UAP and the user identifier of the UE are used, the updated location of the UAP is used to perform location update on the UE, and a location update response message is sent to the UAP. In this way, the location update of the UE that establishes the PDN connection through the UAP is implemented.

FIG. 5 shows a flow of a network access method according to an embodiment of the present invention. A UAP is attached to a mobile network, and a PDN connection is established, and the UE is connected to the UAP through a WiFi network. The mobile network may be a 3GPP network or a non-3GPP network. The 3GPP network is taken as an example here. The steps in Figure 5 are detailed below:

In step S501, the UAP acquires the user identifier of the UE through the WiFi connection.

The user identifier of the UE may be an IMSI, an MSISDN, an IMEI, a MAC address, etc., the APN may be used to indicate an access point of the PDN connection that is requested to be established, and the PDN searches for a corresponding data gateway according to the APN.

In the step S502, the UAP sends a first PDN connection establishment request for establishing a PDN connection for the UE to the MME, where the first PDN connection establishment request includes the user identifier of the UE and the user identifier of the UAP.

Optionally, the first PDN connection request may be sent to the MME by using a NAS encapsulation between the UAP and the MME. Although the NAS encapsulation between the UAP and the MME is used, it is not used to establish a PDN connection for the UAP itself, but Establish a PDN connection for the UE.

In step S503, the MME acquires subscription data of the UE from the HSS according to the received user identifier of the UE.

In step S504, the MME selects a PDN gateway according to the APN in the subscription data or the APN in the first PDN connection request, sends a create session request to the SGW (not shown), and then sends the request to the PDN gateway, including the user of the UE. Identifies and/or the APN of the UE. Optionally, the user identifier of the UAP may also be included in the creation session request. The PDN gateway may establish an association relationship between the user identifier of the UAP and the user identifier of the UE, and associate the bill of the UE with the bill of the UAP in subsequent charging, if the user request identifier of the UAP is also included in the creation session request received by the PDN gateway. in. The MME may also determine the PDN gateway according to the configured information. In this case, the MME may not perform step S503.

In step S505, the PDN gateway initiates IP-CAN The session is established, and an IP-CAN session is established with the PCRF to obtain a PCC rule corresponding to the PDN connection of the UE.

In the step S506, the PDN gateway creates a PDN connection context of the UE, and sends a create session request response to the MME via the SGW, where the create session request response may include information such as an IP address, QoS, and the like allocated to the UE.

In step S507, the MME sends a first PDN connection setup response to the UAP, and the first PDN establishment connection response may include an IP address allocated by the PDN gateway to the UE.

In the embodiment of the present invention, after the PDN connection of the UE is established, if the MME receives the user identifier of the UAP and the user identifier of the UE in the PDN connection request, the MME may establish an association relationship between the UAP and the UE. The MME binds the UAP and the UE, that is, associates them. For example, the UAP user ID and the UE's user ID can be bound together. The user identifier of the UAP may be an IMSI, an MSISDN, an IMEI, or a MAC address, etc., and the user identifier of the UE may be an IMSI, an MSISDN, an IMEI, or a MAC address. According to the association relationship between the UAP and the UE, the MME may perform combined mobility management and session management for the UAP and the UE accessing the PDN through the UAP.

In step S508, after receiving the first PDN connection response, the UAP establishes a PDN connection context of the UE. The PDN connection context may include information such as an IP address assigned to the UE by the PDN gateway.

In step S509, the UAP may send the IP address allocated by the PDN gateway to the UE to the UE. The UE may receive or transmit a data packet using the IP address, and the UAP uses the IP address to receive or forward the data packet of the UE from the PDN connection of the UE. At this time, the PDN gateway can perform forwarding, parsing, lawful interception, and service QoS control on the UE packet data packet according to the QoS policy of the UE and the PCC policy, thereby facilitating the quality of service of the UE. Alternatively, the UAP does not need to send the IP address assigned by the PDN gateway to the UE to the UE, and the UAP uses the network address translation (Network). Address The Translation, NAT mode uses the PDN connection of the UE to receive or transmit data packets of the UE for the UE. For example, in a WiFi network, a UAP allocates an IP address to a UE, and the UE sends a data packet to the UAP using the IP address assigned by the UAP, and the UAP converts the IP address into a PDN. The network assigns an IP address to the UE and forwards the data packet from the PDN connection for the UE. Similarly, the UAP receives a data packet sent to the UE from the PDN connection, where the data packet includes an IP address allocated to the UE in the PDN connection response, and the UAP translates the IP address into an IP address assigned by the UAP to the UE, and sends the IP address to the UE. Forward the packet.

Obtaining the user identifier of the UE in step S501 can be obtained by:

The UAP receives a second PDN connection establishment request sent by the UE through the WiFi connection, where the second PDN connection establishment request includes the user identifier of the UE, or the user identifier of the UE and the APN of the UE; or

The UAP receives the third PDN connection establishment request sent by the UE through the WiFi connection, where the third PDN connection establishment request includes the first identifier of the UE, or the first identifier of the UE and the APN of the UE, and after receiving the third PDN connection establishment request, The UE assigns a user identity.

After receiving the first identifier, the UAP allocates a user identifier to the UE, and the user identifier may be a local unique identifier on the UAP, or may be a globally unique identifier between different UAPs. If it is a locally unique identifier, the UE can be globally uniquely determined by the UAP identity and the identity of the UE. For example, when the MME establishes the context of the PDN connection of the UE, the UAP identity and the identity of the UE are used to determine the UE globally uniquely.

FIG. 6 is a flowchart of a network access method according to an embodiment of the present invention. A UAP is attached to a mobile network, and a PDN connection is established, and the UE is connected to the UAP through a WiFi network. The mobile network may be a 3GPP network or a non-3GPP network. The 3GPP network is taken as an example here. The authentication information of the UE in this process can be obtained by means of an interactive EAP message.

In step S601, the UAP sends an EAP request to the UE.

In step S602, the UAP receives the EAP response sent by the UE, where the EAP response includes the user identifier of the UE, or the user identifier of the UE and the APN; or

Receiving an EAP response sent by the UE, where the EAP response includes the first identifier of the UE, or the first identifier of the UE and the APN. After receiving the EAP response, the user identifier is allocated to the UE according to the first identifier.

Steps S603 to S609 can refer to steps S502 to S508, and details are not described herein again.

In step S610, the UAP sends an EAP success message to the UE, and the success message may include an IP address allocated by the PDN gateway for the UE, or may not be included.

The UE may use the PDN gateway to communicate with the IP address assigned by the UE, and may also use the NAT mode to communicate. For details, refer to the description of step 509, and details are not described herein. In the embodiment of the present invention, the security in the data transmission process can be improved by using the EAP protocol.

FIG. 7 is a flowchart of a network access method according to an embodiment of the present invention. A UAP is attached to a mobile network, and a PDN connection is established, and the UE is connected to the UAP through a WiFi network. The mobile network may be a 3GPP network or a non-3GPP network. The 3GPP network is taken as an example here. The authentication information of the UE in this process can be obtained by means of interactive DHCP messages.

In step S701, the DHCP request sent by the UE is received, where the DHCP request includes the user identifier of the UE, or the user identifier of the UE and the APN of the UE.

Alternatively, the step S701 may be: receiving a DHCP request sent by the UE, where the DHCP request includes the first identifier of the UE, or the first identifier of the UE and the APN of the UE, and after receiving the DHCP request, according to the first identifier, The UE assigns a user identity.

Steps S702 to S708 can refer to the description of steps S502 to S508, and details are not described herein again.

In step S709, the UAP sends a DHCP response to the UE. The DHCP response may include an IP address assigned by the PDN gateway to the UE for the UE to communicate using the address. When the NAT mode is used, the DHCP response may also include an IP address assigned by the UAP to the UE. A detailed description can be found in the description of step S509.

FIG. 8 is a flowchart showing an interaction process of a network access method according to an embodiment of the present invention. In this process, a UE is attached to a UAP through a WiFi network, and a UAP establishes a PDN connection with a PDN gateway, and passes the UAP. A PDN connection is also established for the UE. The steps included in the process are detailed below:

In step S801, the UAP sends a detach request to the MME.

Alternatively, the UAP may also send a PDN connection release request to the MME.

The connection release request or the detach request may include a user identifier of the UAP, or a user identifier of the UE and a user identifier of the UAP.

The UAP sending the detach request or the PDN connection release request may be triggered by the UAP itself, or may be triggered by the UE sending the detach request to trigger the UAP to send the detach request or the PDN connection release request, or the UE may send the PDN connection release request. Trigger UAP to send a detach request or a PDN connection release request.

In step S802, the MME sends a delete session request message to the PDN connection of the UE, which may be sent to the PDN gateway via an SGW (not shown).

When the detachment request sent by the UAP includes the user identifier of the UAP but does not include the user identifier of the UE, the MME may determine that the user identifier of the UAP and the UE included in the detach request are deleted according to the locally established association relationship between the UAP and the UE. The PDN-connected UE sends a delete session request to the MME for the determined UE. The MME may also send a delete session request for the UE to the MME according to the UE user identifier included in the detach request and the user identifier of the UAP, if the association between the UAP and the UE is not established locally.

In step S803, the PDN gateway initiates termination of the IP-CAN. The session process terminates the IP-CAN session corresponding to the PDN connection established between the PCRF.

In step S804, the PDN gateway sends a delete session request response message to the MME via the SGW.

In step S805, the MME deletes the PDN connection context of the UE.

In step S806, the MME sends a detach accept message to the UAP. Optionally, the detach accept message may further include a user identifier of the UE associated with the UAP.

Alternatively, corresponding to the sending of the PDN connection release request in step 801, the MME may also send a PDN connection release response message to the UAP.

In step S807, the UAP locally deletes the PDN connection context information of the UE associated with the UAP. The UAP can also release WiFi air interface resources with the UE.

Optionally, the UAP sends a PDN connection disconnection response to the UE before releasing the WiFi air interface resource with the UE.

After the PDN connection of the UE is established through the UAP, if the UE needs to disconnect the PDN (for example, when the UE disconnects the WiFi connection with the UAP or the UAP is detached), the PDN connection release request or the detachment may be sent to the MME through the UAP. The request is released, thereby releasing the PDN connection of the UE, deleting the resources of the UE in the mobile network, realizing the timely disconnection of the PDN connection of the UE, releasing the system resources allocated by the PDN, and avoiding waste of resources.

FIG. 9 is a schematic structural diagram of a user equipment access point device according to an embodiment of the present invention. The device may be the UAP in FIG. 1 to FIG. 8. For ease of explanation, only parts related to the embodiments of the present invention are shown, including:

The user identifier obtaining unit 901 is configured to acquire a user identifier of the user equipment UE.

a first connection establishment message sending and receiving unit 902, configured to send, to the MME, a first PDN connection establishment request for establishing a packet data network PDN connection for the UE, where the first PDN connection establishment request includes a user identifier of the UE And receiving, by the user identifier of the UAP, a first PDN connection establishment response sent by the MME;

The connection establishing unit 903 is configured to establish a PDN connection context of the UE.

Unit 902 can be a transceiver and unit 903 can be a processor.

The user equipment access point device may further include:

a connection release messaging unit 904, configured to send, to the MME, a first PDN connection release request for releasing a PDN connection of the UE, where the first PDN connection release request includes a user identifier of the UE and the a user identifier of the UAP, receiving a first PDN connection release response sent by the MME;

The first connection deleting unit 905 is configured to delete the PDN connection context of the UE.

Unit 904 can be a transceiver and unit 905 can be a processor.

As shown in FIG. 10, the user equipment access point device provided by the embodiment of the present invention may include: the user identity obtaining unit 901, the first connection establishment message sending and receiving unit 902, and the connection establishing unit 903.

The detaching and transmitting unit 906 is configured to send, to the MME, a detach request for releasing a PDN connection of the UE, where the detach request includes a user identifier of the UE and a user identifier of the UAP, or a user identifier of the UAP, receiving a detach accept message sent by the MME;

The second connection deleting unit 907 is configured to delete the PDN connection context of the UE.

Unit 906 can be a transceiver and unit 907 can be a processor. As shown in FIG. 11, the user equipment access point device provided by the embodiment of the present invention may include: the user identity obtaining unit 901, the first connection establishment message sending and receiving unit 902, and the connection establishing unit 903, and the following:

a location update message sending and receiving unit 908, configured to send, to the MME, a location update request for updating a location of the UE, where the location update request includes a user identifier of the UAP, or a user identifier of the UE The user identifier of the UAP receives a location update response sent by the MME. Unit 908 can be a transceiver.

In another embodiment of the present invention, the user equipment access point device may further include a user identity obtaining unit 901, a first connection establishment messaging unit 902, a connection establishing unit 903, a detaching messaging unit 906, and a second connection. The deleting unit 907 and the location update messaging unit 908.

As shown in FIG. 11a, the user identification acquisition unit 901 may include at least one of the sub-unit 9011 to the sub-unit 9016 in FIG. 11a.

The first receiving subunit 9011 is configured to receive a second PDN connection establishment request sent by the UE, where the second PDN connection establishment request includes the user identifier.

a second receiving sub-unit 9012, configured to receive a third PDN connection establishment request sent by the UE, where the third PDN connection establishment request includes a first identifier of the UE, or a first identifier and a location of the UE The APN is configured to allocate the user identifier to the UE according to the first identifier.

The first EAP messaging sub-unit 9013 is configured to send an EAP request to the UE, and receive an EAP response sent by the UE, where the EAP response includes the user identifier, or the user identifier and the APN.

a second EAP messaging sub-unit 9014, configured to send an EAP request to the UE, and receive an EAP response sent by the UE, where the EAP response includes a first identifier of the UE, or a first identifier of the UE And the APN, the user identifier is allocated to the UE according to the first identifier.

The first DHCP messaging sub-unit 9015 is configured to receive a DHCP request sent by the UE, where the DHCP request includes the user identifier.

The second DHCP messaging sub-unit 9016 is configured to receive a DHCP request sent by the UE, where the DHCP request includes a first identifier of the UE, and the user identifier is allocated to the UE according to the first identifier. .

Subunit 9011 through subunit 9016 may each be a transceiver.

The behavior of each component unit of the user equipment access point device, the interaction behavior between the component units, and the corresponding technical effects correspond to the descriptions of the methods performed by the UAP in the method embodiments shown in FIG. 1 to FIG. I will not repeat them here.

FIG. 12 is a schematic structural diagram of a mobility management entity device according to an embodiment of the present invention. The mobility management entity device may be the MME in FIG. 1 to FIG. For ease of explanation, only parts related to the embodiments of the present invention are shown, including:

The first connection establishment message sending and receiving unit 1201 is configured to receive a first PDN connection establishment request that is sent by the UAP and is used to establish a packet data network PDN connection for the user equipment UE, where the first PDN connection establishment request includes the UE authentication Information, the authentication information includes a user identifier of the UE;

Creating a session messaging unit 1202, configured to send a create session request to the PDN gateway, where the create session request includes a user identifier of the UE, and receive a create session request response sent by the PDN gateway;

a second connection establishing unit 1203, configured to establish a PDN connection context of the UE;

The first connection setup messaging unit 1201 is further configured to send a first PDN connection setup response to the UAP.

Unit 1201 and unit 1202 may each be a transceiver, and unit 1203 may be a processor.

In another embodiment of the present invention, the mobility management entity device includes the first connection establishment messaging unit 1201, the creation session messaging unit 1202, and the second connection establishing unit 1203. The mobility management entity device further includes Can include:

The association relationship establishing unit 1204 is configured to establish an association relationship between the UAP and the UE by using a user identifier of the UAP and a user identifier of the UE. Unit 1204 can be a type of processor.

In another embodiment of the present invention, the mobility management entity device includes the first connection establishment messaging unit 1201, the creation session messaging unit 1202, the second connection establishing unit 1203, and the association establishing unit 1204. The mobility management entity device may further include:

The associated connection release 1205 is configured to receive a detach request of the UAP that is sent by the UAP, and release a PDN connection of the UE according to an association between the UAP and the UE. Unit 1205 can be implemented by a receiver and a processor.

The associated location update unit 1206 is configured to receive a location update request that is sent by the UAP and includes a user identifier of the UAP, and perform location update on the UE according to an association relationship between the UAP and the UE. Unit 1206 can be implemented by a receiver and a processor.

The associated connection release unit 1205 may include:

The association detachment messaging sub-unit 12051 is configured to receive a detach request for releasing a PDN connection of the UE that is sent by the UAP, and send a detach accept message to the UAP;

The association determination sub-unit 12052 is configured to determine, according to the association relationship and the user identifier of the UAP, a user identifier of the UE that needs to release the PDN connection;

The association deletion session messaging sub-unit 12053 is configured to send a deletion session request message to the PDN gateway, where the deletion session request message includes a user identifier of the UE, and receives a deletion session request response message sent by the PDN gateway;

The association connection deletion sub-unit 12054 is configured to delete the PDN connection context of the UE.

Subunit 12051 and subunit 12053 can be a type of transceiver, and subunit 12052 and subunit 12054 can be a type of processor.

The associated location update unit 1206 can include:

The associated location update messaging sub-unit 12061 is configured to receive a location update request for updating a location of the UE that is sent by the UAP, and send a location update response message to the UAP.

The associated location update sub-unit 12062 is configured to determine, according to the association relationship and the user identifier of the UAP, the UE that needs location update, and update the UE by using the location update information of the UAP included in the location update request. Location information.

Subunit 12061 can be a transceiver and subunit 12062 can be a type of processor.

As shown in FIG. 13, in another embodiment of the present invention, the mobility management entity device includes the first connection establishment messaging unit 1201, the creation session messaging unit 1202, and the second connection establishing unit 1203. The mobility management entity device may further include:

a connection release messaging unit 1207, configured to receive a first PDN connection release request sent by the UAP to release a PDN connection of the UE, where the first PDN connection release request includes a user identifier and a location of the UE User ID of the UAP;

a connection release unit 1208, configured to release a PDN connection of the UE;

The connection release messaging unit 1207 is further configured to send the PDN connection release response to the UAP.

Unit 1207 can be a transceiver and unit 1208 can be a type of processor.

As shown in FIG. 14, in another embodiment of the present invention, the mobility management entity device includes the first connection establishment messaging unit 1201, the creation session messaging unit 1202, and the second connection establishing unit 1203. The mobility management entity device may further include:

The detaching and receiving unit 1210 is configured to receive a detach request sent by the UAP to release a PDN connection of the UE, where the detach request includes a user identifier of the UAP and a user identifier of the UE;

a connection release unit 1211, configured to release a PDN connection of the UE;

The detachment messaging unit 1210 is further configured to send a detach accept message to the UAP.

Unit 1210 can be a transceiver and unit 1211 can be a type of processor. The connection release unit 1208 and the connection release unit 1211 may respectively include:

a delete session message sub-unit 12081, configured to send a delete session request message to the PDN gateway, where the delete session request message includes a user identifier of the UE, and receives a delete session request response message sent by the PDN gateway;

A connection deletion sub-unit 12082 is configured to delete the PDN connection context of the UE.

Subunit 12081 can be a transceiver and subunit 12082 can be a type of processor. As shown in FIG. 15, in another embodiment of the present invention, the mobility management entity device includes the first connection establishment messaging unit 1201, the creation session messaging unit 1202, and the second connection establishing unit 1203. The mobility management entity device may further include:

a location update messaging unit 1213, configured to receive a location update request sent by the UAP for updating a location of the UE, where the location update request includes an updated location of the UAP, a user identifier of the UAP, And a user identifier of the UE;

a location update unit 1214, configured to perform location update on the UE by using the updated location of the UAP;

The location update messaging unit 1213 is further configured to send a location update response message to the UAP.

Unit 1213 can be a transceiver and unit 1214 can be a type of processor. In the embodiment of the present invention, after receiving the PDN connection establishment request that is sent by the UAP, including the UE authentication information, the MME sends a PDN connection establishment request to the PDN gateway to establish a PDN connection for the UE. After receiving the PDN connection setup response sent by the PDN gateway, the PDN connection context of the UE is established, and the PDN connection setup response is sent to the UAP. Therefore, the mobile network can allocate independent resources, including the IP address, the QoS policy, and the charging rule, to the UE through the UAP. Meanwhile, at the same time, when the present invention also provides an implementation manner of PDN connection release and location update of multiple UEs, the PDN connection release and location update process of the UE connected to the PDN through the UAP is implemented.

The behavior of each component of the mobility management entity device, the interaction behavior between the component units, and the corresponding technical effects correspond to the descriptions of the methods performed by the MME in the method embodiments of FIGS. 1 to 8 . Let me repeat.

A person skilled in the art may understand that all or part of the steps of implementing the above method embodiments may be completed by hardware, or may be instructed by a program to complete related hardware. All or part of the units or subunits of the above device embodiments may be implemented by hardware. The completion may also be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium. The storage medium mentioned above may be a read only memory, a magnetic disk or an optical disk.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A method for network access, characterized in that it comprises:

The user equipment access point UAP acquires the user identifier of the user equipment UE;

Sending, to the mobility management entity MME, a first PDN connection establishment request for establishing a packet data network PDN connection for the UE, where the first PDN connection establishment request includes a user identifier of the UE and a user identifier of the UAP ;

Receiving a first PDN connection setup response sent by the MME, establishing a PDN connection context of the UE.
The method of claim 1 further comprising:

Sending, to the MME, a location update request for updating a location of the UE, where the location update request includes a user identifier of the UAP, or a user identifier of the UE and a user identifier of the UAP;

Receiving a location update response sent by the MME.
The method of claim 1 or 2, further comprising:

Sending, to the MME, a first PDN connection release request for releasing a PDN connection of the UE, where the first PDN connection release request includes a user identifier of the UE and a user identifier of the UAP;

Receiving a first PDN connection release response sent by the MME, and deleting a PDN connection context of the UE.
The method of claim 1 or 2, further comprising:

Sending, to the MME, a detach request for releasing a PDN connection of the UE, where the detach request includes a user identifier of the UE and a user identifier of the UAP, or a user identifier including the UAP;

Receiving a detach accept message sent by the MME;

The context of the PDN connection of the UE is deleted.
The method according to any one of claims 1 to 4, wherein the obtaining the authentication information of the UE comprises:

Receiving a second PDN connection establishment request sent by the UE, where the second PDN connection establishment request includes a user identifier of the UE; or

Receiving a third PDN connection establishment request sent by the UE, where the third PDN connection establishment request includes a first identifier of the UE, and the user identifier is allocated to the UE according to the first identifier.
The method according to any one of claims 1 to 4, wherein acquiring the authentication information of the UE comprises:

Sending a scalable authentication protocol EAP request to the UE, and receiving an EAP response sent by the UE, where the EAP response includes a user identifier of the UE; or

Sending an EAP request to the UE, and receiving an EAP response sent by the UE, where the EAP response includes a first identifier of the UE, and the user identifier is allocated to the UE according to the first identifier.
The method according to any one of claims 1 to 4, wherein acquiring the authentication information of the UE comprises:

Receiving a dynamic host configuration protocol DHCP request sent by the UE, where the DHCP request includes the user identifier; or

Receiving a dynamic host configuration protocol DHCP request sent by the UE, where the DHCP request includes a first identifier of the UE, and the user identifier is allocated to the UE according to the first identifier.
A user equipment access point device, characterized in that the device comprises:

a user identifier obtaining unit, configured to acquire a user identifier of the user equipment UE;

a first connection establishment message sending and receiving unit, configured to send, to the mobility management entity MME, a first PDN connection establishment request for establishing a packet data network PDN connection for the UE, where the first PDN connection establishment request includes the UE And the user identifier of the UAP, receiving a first PDN connection establishment response sent by the MME;

A connection establishing unit is configured to establish a PDN connection context of the UE.
The device according to claim 8, wherein the device further comprises:

a connection release messaging unit, configured to send, to the MME, a first PDN connection release request for releasing a PDN connection of the UE, where the first PDN connection release request includes a user identifier of the UE and the UAP User identifier, receiving a first PDN connection release response sent by the MME;

And a first connection deleting unit, configured to delete a PDN connection context of the UE.
The device according to claim 8 or 9, wherein the device further comprises:

And a detaching message sending unit, configured to send, to the MME, a detach request for releasing a PDN connection of the UE, where the detach request includes a user identifier of the UE and a user identifier of the UAP, or include The user identifier of the UAP receives a detach accept message sent by the MME;

And a second connection deleting unit, configured to delete a PDN connection context of the UE.
The device of any of claims 8-10, wherein the device further comprises:

a location update messaging unit, configured to send, to the MME, a location update request for updating a location of the UE, where the location update request includes a user identifier of the UAP, or a user identifier and a location of the UE The user identifier of the UAP is received, and the location update response sent by the MME is received.
The device according to any one of claims 8 to 11, wherein the user identifier obtaining unit comprises:

a first receiving subunit, configured to receive a second PDN connection establishment request sent by the UE, where the second PDN connection establishment request includes the user identifier; or

a second receiving subunit, configured to receive a third PDN connection establishment request that is sent by the UE, where the third PDN connection establishment request includes a first identifier of the UE, and the UE is allocated according to the first identifier The user identification.
The device according to any one of claims 8 to 11, wherein the user identifier obtaining unit comprises:

a first EAP messaging sub-unit, configured to send an EAP request to the UE, and receive an EAP response sent by the UE, where the EAP response includes the user identifier; or

a second EAP messaging subunit, configured to send an EAP request to the UE, and receive an EAP response sent by the UE, where the EAP response includes a first identifier of the UE, according to the first identifier, The UE allocates the user identity.
The device according to any one of claims 8 to 11, wherein the user identifier obtaining unit comprises:

a first DHCP messaging subunit, configured to receive a DHCP request sent by the UE, where the DHCP request includes the user identifier; or

The second DHCP messaging sub-unit is configured to receive a DHCP request sent by the UE, where the DHCP request includes a first identifier of the UE, and the user identifier is allocated to the UE according to the first identifier.
A method for network access, characterized in that it comprises:

Receiving, by the user equipment access point UAP, a first PDN connection establishment request for establishing a packet data network PDN connection for the user equipment UE, where the first PDN connection establishment request includes the user identifier of the UE and the UAP User ID;

Sending a create session request to the packet data network PDN gateway, the create session request including a user identifier of the UE;

Receiving a create session request response sent by the PDN gateway;

Establishing a PDN connection context of the PDN connection of the UE, and transmitting a first PDN connection establishment response to the UAP.
The method of claim 15 further comprising:

Establishing an association relationship between the UAP and the UE by using a user identifier of the UAP and a user identifier of the UE.
The method of claim 16 further comprising:

Receiving, by the UAP, a detach request for releasing a PDN connection of the UE, including a user identifier of the UAP, releasing a PDN connection of the UE according to the association relationship, and sending a detach attachment to the UAP Message; or,

Receiving, by the UAP, a location update request for updating a location of the UE, including a user identifier of the UAP, performing location update on the UE according to the association relationship, and sending a location update response message to the UAP. .
The method according to claim 17, wherein the releasing the PDN connection of the UE according to the association relationship comprises:

Determining, according to the association relationship and the user identifier of the UAP, the user identifier of the UE that needs to release the PDN connection, and sending a delete session request message to the PDN gateway, where the delete session request message includes the user identifier of the UE ;

Receiving a delete session request response message sent by the PDN gateway;

The PDN connection context of the UE is deleted.
The method according to claim 17, wherein the updating the location of the UE according to the association relationship comprises:

And determining, according to the association relationship and the user identifier of the UAP, the UE that needs location update, and updating the location information of the UE by using the location update information of the UAP included in the location update request.
The method of claim 15 further comprising:

Receiving, by the UAP, a location update request for updating a location of the UE, where the location update request includes an updated location of the UAP, a user identifier of the UAP, and a user identifier of the UE;

Using the updated location of the UAP, performing location update on the UE;

A location update response message is sent to the UAP.
The method of claim 15 or 20, further comprising:

Receiving, by the UAP, a first PDN connection release request for releasing a PDN connection of the UE, where the first PDN connection release request includes a user identifier of the UE and a user identifier of the UAP;

Release the PDN connection of the UE;

Sending a PDN connection release response to the UAP.
The method of claim 15 or 20, wherein the method further comprises:

Receiving, by the UAP, a detach request for releasing a PDN connection of the UE, where the detach request includes a user identifier of the UAP and a user identifier of the UE;

Release the PDN connection of the UE;

A detach accept message is sent to the UAP.
The method of claim 21 or 22, wherein the releasing the PDN connection of the UE comprises:

Sending a delete session request message to the PDN gateway, where the delete session request message includes a user identifier of the UE;

Receiving a delete session request response message sent by the PDN gateway;

The PDN connection context of the UE is deleted.
A mobility management entity device, comprising:

a first connection establishment message sending and receiving unit, configured to receive a first PDN connection establishment request sent by the user equipment access point UAP for establishing a packet data network PDN connection for the user equipment UE, where the first PDN connection establishment request includes Describe the user identifier of the UE and the user identifier of the UAP;

Creating a session messaging unit, configured to send a create session request to the PDN gateway, where the create session request includes a user identifier of the UE, and receive a create session request response sent by the PDN gateway;

a second connection establishing unit, configured to establish a PDN connection context of the UE;

The first connection establishment message sending and receiving unit is further configured to send a first PDN connection establishment response to the UAP.
The device of claim 24, further comprising:

An association establishing unit is configured to establish an association relationship between the UAP and the UE by using a user identifier of the UAP and a user identifier of the UE.
The device of claim 25, further comprising:

An association connection release unit, configured to receive a detach request for releasing a PDN connection of the UE by using the user identifier of the UAP that is sent by the UAP, and release a PDN connection of the UE according to the association relationship; or

And an associated location update unit, configured to receive a location update request for updating a location of the UE, where the UAP is sent by the UAP, and perform location update on the UE according to the association relationship.
The device of claim 26, wherein the associated connection release unit comprises:

And a detaching message receiving unit is configured to receive a detach request for releasing the PDN connection of the UE that is sent by the UAP, and send a detach accept message to the UAP;

An association determining subunit, configured to determine, according to the association relationship and a user identifier of the UAP, a user identifier of the UE that needs to release a PDN connection;

An association delete message messaging sub-unit is configured to send a delete session request message to the PDN gateway, where the delete session request message includes a user identifier of the UE, and receives a delete session request response message sent by the PDN gateway;

The association connection delete subunit is configured to delete the PDN connection context of the UE.
The device of claim 26, wherein the associated location update unit comprises:

An associated location update messaging sub-unit, configured to receive a location update request for updating a location of the UE that is sent by the UAP, and send a location update response message to the UAP;

And the associated location update subunit, configured to determine, according to the association relationship and the user identifier of the UAP, the UE that needs location update, and update the UE by using the location update information of the UAP included in the location update request location information.
The device according to claim 24, further comprising:

a connection release messaging unit, configured to receive a first PDN connection release request sent by the UAP to release a PDN connection of the UE, where the first PDN connection release request includes a user identifier of the UE and the User ID of the UAP;

a connection release unit, configured to release a PDN connection of the UE;

The connection release messaging unit is further configured to send a PDN connection release response to the UAP.
The device according to claim 24, further comprising:

And a detaching message sending unit, configured to receive a detach request sent by the UAP to release a PDN connection of the UE, where the detach request includes a user identifier of the UAP and a user identifier of the UE;

a connection release unit, configured to release a PDN connection of the UE;

The detaching messaging unit is further configured to send a detach accept message to the UAP.
The device according to claim 29 or 30, wherein the connection release unit comprises:

Deleting a session message transceiving subunit, configured to send a delete session request message to the PDN gateway, where the delete session request message includes a user identifier of the UE, and receives a delete session request response message sent by the PDN gateway;

The connection deletion subunit is configured to delete the PDN connection context of the UE.
The device of claim 24, further comprising:

a location update messaging unit, configured to receive a location update request sent by the UAP for updating a location of the UE, where the location update request includes an updated location of the UAP, a user identifier of the UAP, and User identifier of the UE;

a location update unit, configured to perform location update on the UE by using the updated location of the UAP;

The location update messaging unit is further configured to send a location update response message to the UAP.