WO2011054145A1

WO2011054145A1 - Method, system and equipment for notifying internet protocol address

Info

Publication number: WO2011054145A1
Application number: PCT/CN2009/074804
Authority: WO
Inventors: 张艳平
Original assignee: 华为技术有限公司
Priority date: 2009-11-05
Filing date: 2009-11-05
Publication date: 2011-05-12
Also published as: CN102696268B; CN102696268A

Abstract

The embodiments of the present invention relate to a method, system and equipment for notifying the internet protocol (IP) address, wherein the method includes: obtaining the first IP address used by the interaction between a Packet Data Network Gateway (PGW) and a Serving Gateway (SGW) of the non operator network, and obtaining the second IP address used by the interaction between the PGW and a SGW of the operator network; notifying said second IP address to the SGW of an operator network when said SGW of the operator network serving the User Equipment (UE); and notifying said first IP address to the SGW of a non operator network when said SGW of the non operator network serving the UE. The embodiment guarantees that the services of the UE can be executed normally when the SGW of the non operator network and the PGW are separate, wherein the SGW and the PGW serve the UE.

Description

Notification method, system and device for internet protocol address

Technical field

The embodiments of the present invention relate to the field of communications, and in particular, to a method, a system, and a mobility management network element device, a packet data network gateway device, and an access network element device. Background technique

In the home access mode, the user equipment (User Equipment, UE for short) uses the home wireless access point and uses the permitted frequency to access the network through the Internet (Internet Protocol, IP for short) access network. .

With the evolution of wireless air interface technology, the air interface bandwidth has grown rapidly, and the core network user plane and transmission resources are facing tremendous expansion pressure. Operators hope to segment the home wireless access service and directly localize some low-value service flows, that is, local access to the Internet as soon as possible. This technology is called Select IP Traffic Offload (SIPTO). Technology, using this technology can avoid occupying the carrier's transmission resources and gateway capacity, thereby reducing the cost per bit of bandwidth.

In the SIPTO-based home access system, the evolved network is taken as an example. When the UE is in the connected state, the serving gateway (Serving Gateway, referred to as SGW) that serves the packet data network (PDN) is used. ) is located in the local network (ie, the home network); when the UE is in the idle state, the SGW serving the local PDN connection is located in the carrier network. In addition, the UE needs to pass through the security gateway when accessing the carrier network through the local network. For the UE in the idle state, the Packet Data Network Gateway (PGW) in the local network uses the IP address assigned by the security gateway and The SGW in the carrier network interacts. For the UE in the connected state, the PGW of the local network needs to interact with the SGW that is also located in the local network. The interaction between the PGW and the SGW does not pass through the security gateway of the carrier network. Therefore, the IP address used for this interaction is the IP address assigned by the carrier or the local network. From the above It is known that the IP address used by the PGW and the SGW in the carrier network is different from the IP address used by the SGW of the local network. However, the inventors have studied the above prior art and found that when the UE transitions from the connected state to the idle state or the UE transitions from the idle state to the connected state, the service of the UE cannot be performed normally, which seriously affects the user experience. Summary of the invention

The embodiment of the invention provides a method, a system and a device for notifying the address of the Internet protocol, and ensuring that the service of the UE can be performed normally.

A method for notifying an internet protocol address provided by an embodiment of the present invention includes:

Obtaining a first Internet Protocol IP address used by the packet data network gateway PGW and the service gateway SGW of the non-operator network, and a second IP address used by the SGW of the PGW and the operator network to interact;

Notifying the second IP address to the SGW of the operator network when the serving user equipment is the SGW of the operator network; or when the serving user equipment is the SGW of the non-operator network, the first The IP address is notified to the SGW of the non-operator network.

A mobility management network element device provided by the embodiment of the present invention includes:

An obtaining module, configured to acquire a first data protocol IP address used by the SGW interaction between the packet data network gateway PGW and the service gateway of the non-operator network, and a second IP address used by the SGW of the PGW and the operator network to interact;

a notification module, configured to notify the SGW of the operator network when the serving user equipment is an SGW of the operator network; or, when the service user equipment is an SGW of the non-operator network, Notifying the first IP address to the SGW of the non-operator network.

A packet data network gateway device provided by an embodiment of the present invention includes:

An allocation module, configured to allocate user plane information including a first Internet Protocol IP address and a second IP address and/or control plane information including a first IP address and a second IP address; the first IP address is a packet data network The gateway PGW device is used by the service gateway SGW of the non-operator network. Address, the second IP address is an address used by the SGW interaction between the PGW device and the carrier network;

And a sending module, configured to send the user plane information and/or control plane information to the mobility management network element.

An access network element device provided by the embodiment of the present invention includes:

An obtaining module, configured to obtain a first Internet Protocol IP address and a second IP address;

a sending module, configured to send a message including the first IP address and the second IP address to the mobility management network element;

The first IP address is an address used by the packet data network gateway PGW and the monthly service gateway SGW of the non-operator network, and the second IP address is an address used by the PGW and the SGW of the operator network.

A notification system for an Internet protocol address provided by an embodiment of the present invention includes:

a packet data network gateway device, configured to allocate user plane information including a first Internet Protocol IP address and a second IP address and/or control plane information including a first IP address and a second IP address, and the user plane information and And the control plane information is sent to the mobility management network element device; the first IP address is an address used by the packet data network gateway PGW device and the service gateway SGW of the non-operator network, and the second IP address is a PGW. The address used by the SGW of the device and the carrier network;

a mobility management network element device, configured to acquire the first IP address and the second IP address; and notify the operation of the second IP address when the serving user equipment is an SGW of the operator network Or the SGW of the non-operator network, when the serving user equipment is the SGW of the non-operator network.

Another notification system for the Internet protocol address provided by the embodiment of the present invention includes: an access network element device, configured to acquire a first Internet Protocol IP address and a second IP address, and include the first IP address and the first The message of the second IP address is sent to the mobility management network element device; the first IP address is a packet data network gateway PGW and a service gateway SGW of the non-operator network. An address used by the interaction, where the second IP address is an address used by the PGW and the SGW of the carrier network;

In the embodiment of the present invention, when the serving UE is the SGW of the operator network, the SGW located in the operator network can obtain the IP address used by the PGW, and then the PGW can send the data to the UE via the SGW of the operator network; When the UE is the SGW of the non-operator network, the SGW located in the non-operator network can learn the IP address used by the PGW, and the PGW can send the data to the UE via the SGW of the local network. This embodiment ensures that when the UE is switched from the idle state to the connected state, or the UE transitions from the idle state to the connected state, the service of the UE can be performed normally. DRAWINGS

1 is a schematic structural diagram of a home access system to which an embodiment of the present invention is applied;

2 is a flowchart of a method for notifying an internet protocol address according to an embodiment of the present invention;

3 is a flowchart of obtaining a first IP address and a second IP address in a method for notifying an Internet protocol address according to Embodiment 2 of the present invention;

4 is a flowchart of obtaining a first IP address and a second IP address in a method for notifying an Internet protocol address according to Embodiment 3 of the present invention;

5 is a flowchart of notifying a second IP address to an SGW in a method for notifying an Internet protocol address according to Embodiment 4 of the present invention;

6 is a flowchart of notifying a first IP address to an SGW in a method for notifying an Internet protocol address according to Embodiment 5 of the present invention;

FIG. 7 is a schematic structural diagram of a mobility management network element device according to Embodiment 6 of the present invention; FIG. 9 is a schematic structural diagram of a packet data network gateway device according to Embodiment 8 of the present invention; 10 is a schematic structural diagram of a device for accessing a network element according to Embodiment 9 of the present invention;

11 is a schematic structural diagram of a notification system of an Internet Protocol address according to Embodiment 10 of the present invention; and FIG. 12 is a schematic structural diagram of a notification system of an Internet Protocol address according to Embodiment 11 of the present invention. detailed description

The technical solutions of the embodiments of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

FIG. 1 is a schematic structural diagram of a home access system according to an embodiment of the present invention. As shown in Figure 1, a 3G home base station (Home NodeB, abbreviated as: ΗΝΒ) is a home wireless access point operating in the spectrum of a Universal Terrestrial Radio Access Network (UTRAN), Home Evolved Base Station (Home) Evolved NodeB (HeNB) is a home wireless access point operating in the evolved UTRAN (Evolved UTRAN, E-UTRAN) spectrum. Home non-3 GPP Wireless Access Point (referred to as: Home non-3GPP WAP is a home wireless access point operating in the spectrum of non-3GPP networks such as CDMA/Wimax/WLAN/HRPD.

HNB gateway (HNB GW), HeNB gateway (HeNB GW) and home non-3GPP wireless access point gateway (Home non-3GPP WAP GW) are respectively through the universal IP access network and HNB, HeNB and home non-3GPP wireless access point The gateway of the connected home wireless access point. The gateway of the home wireless access point has the functions of management and access control of the home wireless access point, aggregation of the home wireless access point, and routing and forwarding signaling data between the home wireless access point and the network element in the mobile network. .

The network elements in the mobile network include: Mobility Management Entity (MME) in E-UTRAN, General Packet Radio Service (GPRS) / Universal Mobile Telecommunications (Universal Mobile Telecommunications) System, referred to as: Servicing GPRS Supporting Node (SGSN) and Gateway GPRS Supporting Node (GGSN) in the UMTS), SGW and PGW in the evolved core network, and A non-3GPP gateway (non-3GPP GW) of various implementation entities included in the 3GPP network. The non-3GPP gateways include: EVA (Evolved Packet Data Gateway, EPDG) in the Wireless Local Area Access (WLAN) network, Worldwide Interoperability for Microwave Access, referred to as WiMAX, Access Service Network Gateway (ASN GW), Code Access Multiple Addressing (CDMA) network access gateway (Access Gateway, referred to as : AGW ) and High Rate Packet Data ( HRPD ) High-speed packet data service gateway ( HRPD Serving Gateway, HSGW for short).

In addition, Home Subscriber Server (HSS) is used for storage.

The UE's subscription information, authentication, authorization, and accounting (AAA) server is used to perform access authentication, authorization, and accounting functions for the UE.

For the convenience of description, each network element in different scenarios is collectively referred to as follows:

a home base station, that is, an HNB or HeNB or a home non-3GPP wireless access point; a home base station gateway, that is, an HNB gateway or a HeNB gateway or a home non-3GPP wireless access point gateway; a mobility management network element, ie, an SGSN or an MME; The element is the above-mentioned home base station, home base station gateway, and radio network controller (Radio Network Controller, RNC for short) eNodeB.

In the embodiment of the present invention, the PGW serving the local PDN connection may be located in the home base station, or in the home base station gateway, or may be an independent physical device.

FIG. 2 is a flowchart of a method for notifying an internet protocol address according to an embodiment of the present invention. In this embodiment, when the SGW serving the local PDN connection is located in the non-operator network, the SGW is referred to as the non-operator SGW; when the SGW serving the local PDN connection is located in the carrier network, the SGW is referred to as the operator. The SGW of the network. As shown in FIG. 2, the embodiment specifically includes the following steps: Step 101: Acquire a first IP address used by an SGW interaction between a PGW and a non-operator network, and a second IP address used by the SGW of the PGW and the carrier network. ; Step 102: When the serving UE is the SGW of the operator network, notify the SGW of the operator network of the second IP address; or notify the non-operator network of the SGW when the serving UE is the SGW of the non-operator network. SGW of the carrier network.

Further, step 101 may include: receiving user plane information including a first IP address and a second IP address and/or control plane information including a first IP address and a second IP address, the user plane information and control sent by the PGW Face information is assigned by the PGW.

Step 101 may also include: receiving a message that is sent by the access network element and includes the first IP address and the second IP address. In this case, the embodiment may further include: receiving, by the PGW, a tunnel endpoint identifier corresponding to the first IP address and the second IP address, where the tunnel endpoint identifier is allocated by the PGW; respectively, the first IP address and the first The second IP address is associated with the corresponding tunnel endpoint identifier. The step 102 may include: when the serving UE is the SGW of the operator network, notifying the second IP address and the tunnel endpoint identifier associated with the second IP address to the SGW of the operator network; or, when serving the UE The SGW of the carrier network notifies the first IP address and the tunnel endpoint identifier associated with the first IP address to the SGW of the non-operator network.

This embodiment can be applied to a home access system based on the SIPTO technology. The mobility management network element obtains in advance the first IP address used by the PGW and the SGW interaction of the non-operator network, and the SGW used by the PGW and the operator network. The second IP address; when the serving UE is the SGW of the operator network, the mobility management network element notifies the second IP address to the SGW of the operator network; when the serving UE is the SGW of the non-operator network, mobility management The network element notifies the SGW of the non-operator network of the first IP address.

It can be seen from the above that when the UE is switched from the connected state to the idle state, that is, the serving UE is the SGW of the operator network, the SGW located in the operator network can learn the IP address used by the PGW, interact with the PGW, and establish the user plane and The signaling plane is connected; the PGW can send the received data to the UE via the SGW of the carrier network; when the UE transitions from the idle state to the connected state, the serving UE is the SGW of the non-operator network, and is located in the non-operator network. The SGW can know the IP address used by the PGW, interact with the PGW, establish a user plane and a signaling plane connection; and then the PGW can The received data is sent to the UE via the SGW of the non-operator network. This embodiment ensures that when the UE transitions from the connected state to the idle state or the UE transitions from the idle state to the connected state, the service of the UE can be performed normally.

When the PGW is separated from the non-operator's SGW due to UE mobility, the non-operator's SGW can learn the IP address used by the PGW, interact with the PGW, and establish a user plane and signaling plane connection; and then the PGW can receive the received The data is sent to the UE via the non-operator's SGW. In this embodiment, when the SGW and the PGW of the non-operator network of the serving UE are separated, the service of the UE can be performed normally. The network is equally applicable to the following embodiments.

FIG. 3 is a flowchart of obtaining a first IP address and a second IP address in a method for notifying an Internet protocol address according to Embodiment 2 of the present invention. On the basis of the first embodiment, the method further provides a method for the mobility management network element to obtain the first IP address and the second IP address, where the mobility management network element receives the PGW and includes the first IP address and the first The user plane information of the second IP address and/or the control plane information including the first IP address and the second IP address, where the user plane information and the control plane information may be in a PDN connection establishment procedure or a packet data protocol (Packet Data Protocol, referred to as : PDP) Activation process, provided by PGW. Specifically, the following steps are included:

Step 201: The UE sends a PDN connection establishment request message or a PDP activation request message to the mobility management network element by using the access network element.

The message may include an Access Point Name (abbreviation: ΑΡΝ) for indicating from which access point the message was sent.

The PDN connection establishment request message or the PDP activation request message transmitted by the access network element may include capability information of whether the access network element supports SIPTO.

Step 202: The mobility management network element sends a create session request message to the SGW according to the PDN connection setup request message or the PDP activation request message.

Since the SGW interacting with the PGW is located on the non-operator network when establishing the PDN connection, The SGW in this embodiment is a non-operator SGW.

If the PDN connection setup request message or the PDP activation request message includes the capability information of whether the access network element supports SIPTO, the mobility management network element determines the PDN connection or the PDP according to whether the access network element supports the SIPTO capability information and the user subscription data. Whether the bearer can use SIPTO, if yes, send a create session request message to the SGW. User subscription data can be pre-stored in the mobility management network element.

Further, the create session request message may include a control plane IP address used by the PGW, where the control plane IP address is used to interact with the SGW control plane of the non-operator network, and may be provided to the mobile when the access network element starts. The management network element is pre-configured in the mobility management network element.

Step 203: The SGW sends a create session request message to the PGW.

Step 204: After receiving the Create Session Request message, the PGW creates session and bearer information, and allocates resources for the UE.

The PGW allocates resources for the UE, including: allocating user plane information for the bearer, and/or, assigning control plane information to the user APN. Both the user plane information and the control plane information include a first IP address and a second IP address.

Further, for each bearer, the user plane information may include a bearer identifier (ID) and a tunnel endpoint identifier (TEID) in addition to the first IP address and the second IP address, and the user plane information may be Expressed as {bearer ID, first IP address, second IP address, TEID}. The control plane information for the UE and the APN may include a user identifier and a TEID in addition to the first IP address and the second IP address, and may also include an APN, and the control plane information may be represented as {user identifier, APN, First IP address, second IP address, TEID}. The above representation indicates that the PGW assigns the same TEID to the two IP addresses, that is, the first IP address and the second IP address correspond to the same TEID. The PGW may also assign different TEIDs to the two IP addresses, that is, the first IP address and the second IP address correspond to different TIEDs, and the user plane information and the control plane information are respectively represented as {bearer ID, {first IP address, TEID1}, {second IP address, TEID2}}, {user ID, APN, {first IP address, TEID1}, {second IP address, TEID2}}. The first IP address in the user plane information includes a first user plane IP address for interacting with the SGW user plane of the non-operator network, and the second IP address in the user plane information includes the SGW user for the carrier network. a second user plane IP address of the face interaction; the first IP address in the control plane information includes a first control plane IP address for interacting with the SGW control plane of the non-operator network, and a second IP address in the control plane information A second control plane IP address for interacting with the SGW control plane of the carrier network is included. The first user plane IP address and the first control plane IP address may be the same or different, and the second user plane IP address and the second control plane IP address may also be the same or different. For convenience of description, the user plane IP address and the control plane IP address are not separately described herein, and are collectively referred to as IP addresses.

The manner of identifying the cells of the first IP address and the second IP address may be: 1) using different cell identifiers, such as: the cell identifier "0" is used to identify the first IP address, and the cell identifier is "1". " is used to identify the second IP address; 2) according to the location of the cell in the message body or according to the relative position of the two cells, such as: the first IP address in the message body is the first IP address, The IP address in the back is the second IP address, and vice versa. This embodiment emphasizes that the mobility management network element needs to acquire the PGW and the network elements of different networks to use different IP addresses. The specific implementation manner includes but is not limited to the foregoing two modes.

The service gateway of the non-operator network may store the user plane and control plane information allocated by the PGW for the UE, or may only store information that the PGW interacts with the non-operator network element, such as the first IP address.

Step 205: The PGW sends a create session response message to the mobility management network element by using the SGW, where the message includes user plane information and/or control plane information allocated by the PGW.

Step 206: The mobility management network element receives and stores the user plane information and/or the control plane information sent by the PGW, where the mobility management network element establishes a radio bearer for the UE, and sends a radio bearer setup message to the access network element.

The mobility management network element may extract the first IP address and the second IP address by using cells identifying the first IP address and the second IP address, and save the same. Step 207: The access network element sends a radio bearer setup message to the UE.

Step 208: The UE sends a radio bearer setup complete message to the access network element.

Step 209: The access network element sends a radio bearer setup complete message to the mobility management network element. Step 210: The mobility management network element sends a bearer modification request message to the SGW, where the message may include user plane information allocated by the access network element to the UE.

Step 211: The SGW sends a bearer modification response message to the mobility management network element.

If the UE sends a PDP activation request message in step 201, the embodiment may further include: the mobility management network element sends a PDP activation accept message to the UE.

In this embodiment, during the PDN connection establishment or the PDP activation process, the mobility management network element may obtain the first IP address and the second IP address, so that the first IP address or the second IP address may be notified to the SGW later. When the serving UE is the SGW of the operator network, the SGW located in the operator network can learn the IP address used by the PGW, interact with the PGW, establish a user plane and a signaling plane connection; and then the PGW can pass the received data through the operation. The SGW of the quotient network is sent to the UE; when the serving UE is the SGW of the non-operator network, the SGW located in the non-operator network can learn the IP address used by the PGW, interact with the PGW, and establish a user plane and a signaling plane connection; In turn, the PGW can transmit data to the UE via the SGW of the non-operator network. This embodiment ensures that when the UE is switched from the connected state to the idle state or the UE is switched from the idle state to the connected state, or when the SGW of the non-operator network of the serving UE is separated from the PGW, the service of the UE can be performed normally.

FIG. 4 is a flowchart of obtaining a first IP address and a second IP address in a method for notifying an Internet protocol address according to Embodiment 3 of the present invention. On the basis of the first embodiment, the embodiment provides a method for the mobility management network element to obtain the first IP address and the second IP address, where the mobility management network element receives the access network element and includes the first A message of an IP address and a second IP address. Further, the message may be an S1 Setup (SI Setup) message or an Initial UE Message or Configuration Update message. Specifically, the following steps are included:

Step 301: The access network element sends an S1 setup message or an initial UE message or an eNodeB configuration update message to the mobility management network element, where the first IP address and the second IP address are included. When the PGW is located in the access network element, the access network element learns the first IP address and the second IP address, and the first IP address and the second IP address may be pre-configured by the operator on the access network element, or may be The access network element is obtained from the network element management system when the system is started. The network element management system may be a Home NodeB/eNodeB Management System (HMS). The access network element sends an S1 setup message or an initial UE message or an eNodeB configuration update message including the first IP address and the second IP address to the mobility management network element.

Step 302: The mobility management network element receives and saves the first IP address and the second IP address.

After the step 302, the mobility management network element may receive the TEID corresponding to the first IP address and the second IP address that are sent by the PGW, and the TEID may be allocated by the PGW in the PDN connection establishment process or the PDP activation process. The mobility management network element may send the TEID to the corresponding SGW, and the SGW writes the TEID into the corresponding data packet header for subsequent communication. Further, the mobility management network element may associate the first IP address and the second IP address with the corresponding TEID, and send the associated IP address and the TEID to the corresponding SGW. Includes:

Step 303: The UE sends a PDN connection establishment request message or a PDP activation request message to the mobility management network element by using the access network element.

The message may include an APN indicating which access point the message was sent from. Step 304: The mobility management network element sends a create session request message to the SGW according to the PDN connection setup request message or the PDP activation request message.

The SGW in this embodiment is a non-operator SGW, because the SGW that interacts with the PGW is located on the non-operator network. The create session request message sent by the mobility management network element may include a control plane IP address used by the PGW, and the control plane IP address is used to interact with the SGW of the non-operator network.

Step 305: The SGW sends a create session request message to the PGW.

Step 306: After receiving the create session request message, the PGW allocates a resource to the UE, and sends a create session response message to the SGW, where the message includes: a TEID allocated by the PGW to the entity of the non-operator network, that is, corresponding to the first IP address. TEID, expressed by TEID 1; and, PGW is operated The TEID assigned by the entity of the quotient network, that is, the TEID corresponding to the second IP address, is represented by TEID2.

The TEID1 and the TEID2 can be distinguished by using different cell identifiers, for example, the cell identifier "0" is used to identify the TEID 1 corresponding to the first IP address, and the cell identifier "1" is used to identify the TEID2 corresponding to the second IP address; The two TEIDs can also be distinguished by the location in the message body. For example, the TEID in the front of the message body is the TEID1 corresponding to the first IP address, and the TEID in the subsequent TEID is the TEID2 corresponding to the second IP address. Also. This embodiment can be applied to, but not limited to, the above two modes.

Step 307: The SGW sends a create session response message to the mobility management network element.

Step 308: After receiving the session creation response message, the mobility management network element respectively performs the first

The IP address and the second IP address are associated with the corresponding two TEIDs included in the Create Session Response message. After the UE moves, the associated IP address and TEID are sent to the new SGW.

Specifically, the TEID1 corresponding to the first IP address and the TEID2 corresponding to the second IP address are respectively identified according to the description in step 306, and the first triplet information {bearer ID, first IP address, TEID1} is formed, respectively. And the second ternary information {bearer ID, second IP address, TEID2}. When the UE state is changed to the connected state, the first IP address and the TEID associated with the first IP address are notified to the SGW of the non-operator network. Specifically, the first triplet information may be sent to the non-operator network. When the UE is in the idle state, the second IP address and the TEID associated with the second IP address are notified to the SGW of the operator network. Specifically, the second triplet information may be sent to the SGW of the operator network. . After receiving the first triplet information or the second triplet information, the SGW writes the first triplet information or the second triplet information to the corresponding data packet header for subsequent communication according to the protocol.

After the step 308, the following process is further included: the mobility management network element establishes a radio bearer for the UE, and sends a radio bearer setup message to the access network element; the access network element sends a radio bearer setup message to the UE; the UE accesses the access network Transmitting a radio bearer setup complete message; the access network element sends a radio bearer setup complete message to the mobility management network element; the mobility management network element sends a bearer modification to the SGW Request message; The SGW sends a bearer modification response message to the mobility management network element. If the UE sends a PDP activation request message in step 303, the embodiment may further include: the mobility management network element sends a PDP activation accept message to the UE.

In this embodiment, the access network element first provides the first IP address and the second IP address used by the PGW to the mobility management network element, and then in the PDN connection establishment or PDP activation process, the mobility management network element An IP address and a second IP address are respectively bound to their corresponding TEIDs for subsequent notification of the first IP address or the second IP address to the SGW. In this way, when the serving UE is the SGW of the operator network, the SGW located in the operator network can learn the IP address used by the PGW, interact with the PGW, establish a user plane and a signaling plane connection; and then the PGW can receive the received The data is sent to the UE via the SGW of the carrier network. When the SGW of the non-operator network of the UE is served, the SGW located in the non-operator network can learn the IP address used by the PGW, interact with the PGW, and establish user plane and signaling. The PGW can send the received data to the UE via the SGW of the non-operator network. This embodiment ensures that when the UE is switched from the connected state to the idle state or the UE is switched from the idle state to the connected state, or when the SGW of the non-operator network of the serving UE is separated from the PGW, the service of the UE can be performed normally.

FIG. 5 is a flowchart of notifying a second IP address to an SGW in a method for notifying an Internet protocol address according to Embodiment 4 of the present invention. This embodiment further provides a method for the mobility management network element to notify the SGW of the operator network of the second IP address on the basis of the first, second or third embodiment.

In this embodiment, the second IP address is an IP address used by the PGW to interact with the SGW of the carrier network, where the switching of the SGW from the non-operator network to the carrier network may be triggered by the UE transitioning from the connected state to the idle state. of. Specifically, the following steps are included:

Step 401: The UE transitions from the connected state to the idle state, and the access network element sends an S1 user context release request message to the mobility management network element.

The S1 connection release process can be initiated by the mobility management network element, so this step is an optional step. Step 402: The mobility management network element switches the SGW from the non-operator network to the operator network, and sends a create session request message to the SGW of the operator network, where the message includes the second IP address. The second IP address includes both a second control plane IP address and a second user plane IP address.

Step 403: The SGW acquires a second IP address in the Create Session Request message, and sends a bearer modification request message to the PGW.

Step 404: The PGW saves the updated bearer information, and returns a bearer modification response message to the SGW.

Step 405: The SGW returns a create session response message to the mobility management network element.

Step 406: The mobility management network element sends an S1 user context release command to the access network element, and the access network element releases the radio bearer according to the command.

Step 407: The access network element sends an S1 user context release completion command to the mobility management network element. The foregoing steps describe a process of notifying a second IP address to an SGW in an operator network by sending a create session request message including a second IP address in the S1 connection release process. This embodiment may also be an Iu connection in the UMTS. The second IP address is notified to the SGW in the carrier network in the release process, where the access network element initiates an Iu connection release request message to the mobility management network element, and the mobility management network element sends the access network to the access network. The element returns the Iu connection release command.

In this embodiment, when the UE is switched from the connected state to the idle state, in the connection release process, the mobility management network element can use the IP address used by the PGW to interact with the SGW of the operator network by sending a create session request message to the SGW. The address is notified to the SGW, so that the SGW can interact with the PGW to establish a user plane and a signaling plane connection. When the PGW receives the delivered user related data, the PGW can send the data to the SGW of the operator network, triggering mobility. The management network element pages the UE, and then sends the data to the UE. In this embodiment, when the UE transitions from the connected state to the idle state, the service can be performed normally.

FIG. 6 is a flowchart of notifying a first IP address to an SGW in a method for notifying an Internet protocol address according to Embodiment 5 of the present invention. The present embodiment further provides a method for the mobility management network element to notify the SGW of the non-operator network of the first IP address on the basis of the first, second or third embodiment.

In this embodiment, the first IP address is caused by the interaction between the PGW and the SGW of the non-operator network. The IP address used by the SGW to be switched from the carrier network to the non-operator network is triggered by the UE transitioning from the idle state to the connected state. Specifically, the following steps are included:

Step 501: The UE transits to the connected state, and the UE sends a service request message to the mobility management network element. Step 502: The mobility management network element switches the SGW from the carrier network to the non-operator network, and sends a create session request message to the SGW of the non-operator network, where the information includes the first IP address.

The first IP address includes both the first control plane IP address and the first user plane IP address.

Step 503: The SGW acquires a first IP address in the Create Session Request message, and sends a bearer modification request message to the PGW.

Step 504: The PGW saves the updated bearer information, and returns a bearer modification response message to the SGW.

Step 505: The SGW returns a create session response message to the mobility management network element.

Step 506: The mobility management network element sends a radio bearer setup message to the access network element.

Step 507: The access network element establishes a radio bearer for the UE.

Step 508: The access network element sends a bearer setup response message to the mobility management network element.

Step 509: The mobility management network element sends a message to the SGW to update the downlink user plane bearer. The foregoing steps describe a process of notifying a first IP address to an SGW in a non-operator network by sending a create session request message including a first IP address in a service request process. This embodiment may also be a route initiated by the UE. The first IP address is notified to the SGW of the non-operator network in the area update process or the location area update process.

In this embodiment, when the UE transitions from the idle state to the connected state or the UE moves to cause the serving UE's serving gateway and the packet data network gateway to be separated but are located in the same local network, the service request process or the UE initiated routing area update process Or, in the location area update process, the mobility management network element may notify the SGW of the IP address used by the PGW to interact with the SGW of the non-operator network by sending a create session request message to the SGW, so that the SGW can interact with the PGW to establish The user plane and the signaling plane are connected; when the PGW receives the delivered user-related data, the PGW can use the number According to the SGW sent to the non-operator network, the data is sent to the UE. This embodiment ensures that when the UE is switched from the idle state to the connected state, or when the SGW and the PGW of the non-operator network serving the UE are separated, the service can be performed normally.

In summary, the embodiment of the present invention provides a method for the mobility management network element to obtain different communication IP addresses of the PGW and provide them to the SGWs of the non-operator network and the operator network, respectively. Embodiments 4 and 5 are used in combination, and Embodiment 3 can be used in combination with Embodiments 4 and 5, respectively, so that the SGW in different positions can maintain user plane and signaling plane communication with the PGW regardless of whether the UE is in an idle state or a connected state. It ensures the normal operation of the UE service and improves the user experience.

FIG. 7 is a schematic structural diagram of a mobility management network element device according to Embodiment 6 of the present invention. This embodiment is specifically a mobility management network element described in the above embodiment. As shown in FIG. 7, the embodiment specifically includes: an obtaining module 11 and a notification module 12. The obtaining module 11 is configured to acquire a first IP address used by the PGW and the SGW interaction of the non-operator network, and a second IP address used by the PGW and the SGW of the operator network. The notification module 12 is configured to serve the UE. When the SGW of the operator network is, the second IP address is notified to the SGW of the operator network; or when the serving UE is the SGW of the non-operator network, the first IP address is notified to the SGW for non-operator networks.

Further, the obtaining module 11 may be specifically configured to receive user plane information and/or control plane information that is sent by the PGW, including the first IP address and the second IP address.

Specifically, the obtaining module 11 may obtain the first IP address and the second IP address by using the method provided in the foregoing Embodiment 2, and is not described herein.

The foregoing notification module 12 may be specifically configured to: when the serving UE is the SGW of the operator network, notify the SGW of the operator network by sending a create session request message including the second IP address; or, when serving When the UE is the SGW of the non-operator network, the first IP address is notified to the SGW of the non-operator network by sending a create session request message including the first IP address. Specifically, the notification module 12 may notify the SGW of the operator network by using the method of the foregoing embodiment 4, or notify the SGW of the non-operator network by using the method of the fifth embodiment. , will not repeat them here.

In this embodiment, when the serving UE is the SGW of the operator network, the obtaining module and the notification module work, so that the SGW located in the operator network can learn the IP address used by the PGW, interact with the PGW, and establish a user plane and a letter. The RGW is connected, and the PGW can send the received data to the UE via the SGW of the carrier network. When the serving UE is the SGW of the non-operator network, the obtaining module and the notification module can work so that the SGW located in the non-operator network can The IP address used by the PGW is learned, and the PGW is exchanged to establish a user plane and a signaling plane connection, and the PGW can send the received data to the UE via the SGW of the non-operator network. This embodiment ensures that when the UE transitions from the connected state to the idle state or the UE transitions from the idle state to the connected state, or when the SGW and the PGW of the non-operator network of the serving UE are separated, the service of the UE can be performed normally. The mobility management network element described in the above embodiment is used. As shown in FIG. 8, the embodiment specifically includes: an obtaining module 21 and a notification module 22. The obtaining module 21 is specifically configured to receive a message that is sent by the access network element and includes the first IP address and the second IP address. The notification module 22 is configured to: when the serving UE is the SGW of the carrier network, the second The IP address is notified to the SGW of the operator network; or, when the serving UE is the SGW of the non-operator network, the first IP address is notified to the SGW of the non-operator network.

Further, the embodiment may further include a receiving module 23 and an association module 24.

The receiving module 23 is configured to receive a TEID corresponding to the first IP address and the second IP address that are sent by the PGW, where the TEID is allocated by the PGW, and the TEID corresponding to the first IP address and the second IP address may be the same The association module 24 is configured to associate the first IP address and the second IP address with the corresponding TEID, respectively. In this case, the notification module 22 is specifically configured to notify the SGW of the operator network when the serving UE is the SGW of the operator network, and the second IP address and the TEID associated with the second IP address. Or, when the service When the UE is the SGW of the non-operator network, the first IP address and the TEID associated with the first IP address are notified to the SGW of the non-operator network.

Specifically, the obtaining module 21 may obtain the first IP address and the second IP address by using the method provided in the foregoing Embodiment 3. The notification module 22 may notify the carrier network of the second IP address by using the method in the foregoing Embodiment 4. The SGW, or the method of the fifth embodiment, is used to notify the SGW of the non-operator network of the first IP address, and details are not described herein again.

In this embodiment, when the serving UE is the SGW of the operator network, the obtaining module and the notification module work, so that the SGW located in the operator network can learn the IP address used by the PGW, interact with the PGW, and establish a user plane and a letter. The RGW is connected, and the PGW can send the received data to the UE via the SGW of the carrier network. When the serving UE is the SGW of the non-operator network, the obtaining module and the notification module can work so that the SGW located in the non-operator network can The IP address used by the PGW is learned, and the PGW is exchanged to establish a user plane and a signaling plane connection, and the PGW can send the received data to the UE via the SGW of the non-operator network. This embodiment ensures that when the UE transitions from the connected state to the idle state or the UE transitions from the idle state to the connected state, or when the SGW and the PGW of the non-operator network of the serving UE are separated, the service of the UE can be performed normally.

FIG. 9 is a schematic structural diagram of a packet data network gateway device according to Embodiment 8 of the present invention. This embodiment is specifically the PGW described in the above embodiment. As shown in FIG. 9, the embodiment specifically includes: an allocation module 31 and a sending module 32. The distribution module 31 is configured to allocate user plane information including the first IP address and the second IP address and/or control plane information including the first IP address and the second IP address; the sending module 32 is configured to use the user plane Information and/or control plane information is sent to the mobility management network element.

The first IP address is an address used by the SGW interaction between the PGW device and the non-operator network, and the second IP address is an address used by the SGW interaction between the PGW device and the carrier network.

Specifically, the allocating module 31 may allocate the user plane information and/or the control plane information by using the method provided in step 204 in the foregoing embodiment 2. The sending module 32 may send the user plane information by using the method provided in step 205 in the second embodiment. And/or control plane information, which will not be described here.

The PGW device provided in this embodiment allocates a first IP address and a second IP address to the UE. After the user plane information and/or control plane information of the address is sent to the mobility management network element, the mobility management network element notifies the SGW of the first IP address or the second IP address, ensuring that when the UE is switched from the connection state When the idle state or the UE transitions from the idle state to the connected state, or when the SGW and the PGW of the non-operator network serving the UE are separated, the service of the UE can be performed normally.

FIG. 10 is a schematic structural diagram of a device for accessing a network element according to Embodiment 9 of the present invention. This embodiment is specifically the access network element described in the foregoing embodiment. The embodiment specifically includes: an obtaining module 41 and a sending module 42. The obtaining module 41 is configured to obtain a first Internet Protocol IP address and a second IP address, and the sending module 42 is configured to send a message including the first IP address and the second IP address to the mobility management network element.

The first IP address is an address used by the SGW of the PGW and the non-operator network, and the second IP address is an address used by the SGW of the PGW and the operator network.

Specifically, the obtaining module 41 may obtain the first IP address and the second IP address that are pre-configured by the operator on the access network element, and may also obtain the first IP address and the second from the network element management system (such as HMS). The IP address, the sending module 42 may send the message including the first IP address and the second IP address to the mobility management network element by using the method provided in step 301 of the foregoing embodiment 3, and details are not described herein again.

The access network element device provided in this embodiment may send a message including the first IP address and the second IP address to the mobility management network element, so that the mobility management network element notifies the first IP address or the second IP address. The SGW ensures that when the UE transitions from the connected state to the idle state or the UE transitions from the idle state to the connected state, or when the SGW and the PGW of the non-operator network serving the UE are separated, the service of the UE can be performed normally.

FIG. 11 is a schematic structural diagram of a notification system of an Internet Protocol address according to Embodiment 10 of the present invention. As shown in FIG. 11, the embodiment specifically includes: a packet data network gateway device 51 and a mobility management network element device 52. among them:

The packet data network gateway device 51 is configured to allocate user plane information including the first IP address and the second IP address and/or control plane information including the first IP address and the second IP address, the user plane information and/or the control plane The information is sent to the mobility management network element device 52; the first IP address is packet data The address used by the network gateway device 51 and the SGW of the non-operator network, and the second IP address is the address used by the packet data network gateway device 51 and the SGW of the carrier network;

The mobility management network element device 52 is configured to acquire the first IP address and the second IP address; and notify the SGW of the operator network when the serving user equipment is the SGW of the operator network; or When the serving user equipment is the SGW of the non-operator network, the first IP address is notified to the SGW of the non-operator network.

For the foregoing mobility management network element device 52, refer to Embodiment 6, and the packet data network gateway device 51 can refer to Embodiment 8.

FIG. 12 is a schematic structural diagram of a notification system of an Internet Protocol address according to Embodiment 11 of the present invention. As shown in FIG. 12, the embodiment specifically includes: an access network element device 61 and a mobility management network element device 62. among them:

The access network element device 61 is configured to obtain a first IP address and a second IP address, and send a message including the first IP address and the second IP address to the mobility management network element device 62; the first IP address is a PGW The address used by the SGW to interact with the non-operator network, and the second IP address is the address used by the PGW and the SGW of the carrier network;

The mobility management network element device 62 is configured to acquire the first IP address and the second IP address; and notify the SGW of the operator network when the serving user equipment is the SGW of the operator network; or When the serving user equipment is the SGW of the non-operator network, the first IP address is notified to the SGW of the non-operator network.

For the foregoing mobility management network element device 62, refer to the seventh embodiment. For accessing the network element device 61, refer to the ninth embodiment. And provide them separately to the SGW of the non-operator network and the SGW of the operator network. The SGW in different locations can maintain communication between the user plane and the signaling plane with the PGW regardless of whether the UE is in the idle state or the connected state; and also enables the non-operator network when the SGW and the PGW of the non-operator network serving the UE are separated. The SGW can also maintain communication between the user plane and the signaling plane with the PGW; The system provided by the embodiment ensures the normal operation of the UE service and improves the user experience. A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments, and the foregoing storage medium includes: a ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store various program codes.

It is not limited thereto; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or some of the technologies. The features are equivalent to the equivalents of the technical solutions of the embodiments of the embodiments of the present invention.

Claims

Rights request

A method for notifying an internet protocol address, comprising:

2. The method for notifying an Internet Protocol address according to claim 1, wherein the obtaining the first IP address and the second IP address comprises:

Receiving, by the PGW, user plane information including the first IP address and the second IP address, and/or control plane information including the first IP address and the second IP address, where the user plane information and the control plane information are Assigned by the PGW.

3. The method for notifying an internet protocol address according to claim 2, wherein: the first IP address in the user plane information comprises a first user plane IP for interacting with an SGW user plane of a non-operator network. An address, where the second IP address in the user plane information includes a second user plane IP address for interacting with an SGW user plane of the operator network;

The first IP address in the control plane information includes a first control plane IP address for interacting with an SGW control plane of the non-operator network, and the second IP address in the control plane information includes a network for the carrier and the carrier The second control plane IP address of the SGW control plane interaction.

The method for notifying the Internet Protocol address according to claim 3, wherein: the first control plane IP address is the same as the first user plane IP address; or, the second control plane IP address and the second The user plane IP address is the same.

The method for notifying the address of the Internet protocol according to claim 2, wherein: the user plane information includes a first identifier and a tunnel endpoint identifier in addition to the first IP address and the second IP address; The control plane information includes a user identifier and a tunnel endpoint identifier in addition to the first IP address and the second IP address.

The method for notifying the Internet protocol address according to claim 1, wherein the obtaining the first IP address and the second IP address comprises:

Receiving a message that is sent by the access network element and includes the first IP address and the second IP address.

The method for notifying the address of the Internet protocol according to claim 6, wherein after the obtaining the first IP address and the second IP address, the method further includes:

Receiving, by the PGW, a tunnel endpoint identifier corresponding to the first IP address and the second IP address, where the tunnel endpoint identifier is allocated by the PGW;

Correlating the first IP address and the second IP address with the corresponding tunnel endpoint identifier respectively.

The method for notifying an internet protocol address according to claim 7, wherein: the notifying the second IP address to the SGW of the operator network comprises: associating the second IP address with the second IP address The tunnel endpoint identifier is notified to the SGW of the operator network; the notifying the first IP address to the SGW of the non-operator network includes: notifying the first IP address and the tunnel endpoint identifier associated with the first IP address To the SGW of the non-operator network.

9. A mobility management network element device, comprising:

The mobility management network element device according to claim 9, further comprising: a receiving module, configured to receive, by the PGW, a tunnel endpoint identifier corresponding to the first IP address and the second IP address respectively, The tunnel endpoint identifier is assigned by the PGW;

An association module, configured to respectively respectively use the first IP address and the second IP address with the corresponding tunnel end Point identification for association;

The notification module is configured to notify the SGW of the operator network by using the second IP address and the tunnel endpoint identifier associated with the second IP address when the serving user equipment is the SGW of the operator network; or, when the service user When the SGW of the non-operator network is the device, the first IP address and the tunnel endpoint identifier associated with the first IP address are notified to the SGW of the non-operator network.

11. A packet data network gateway device, comprising:

An allocation module, configured to allocate user plane information including a first Internet Protocol IP address and a second IP address and/or control plane information including a first IP address and a second IP address; the first IP address is a packet data network An address used by the gateway PGW device and the serving gateway SGW of the non-operator network, where the second IP address is an address used by the SGW interaction between the PGW device and the carrier network;

12. An access network element device, comprising:

The access network element device according to claim 12, wherein the acquiring module is configured to acquire a preset first Internet Protocol IP address and a second IP address, or obtain the first from the network element management system. IP address and second IP address.

14. A notification system for an internet protocol address, comprising:

a packet data network gateway device, configured to allocate user plane information including a first Internet Protocol IP address and a second IP address and/or control plane information including a first IP address and a second IP address, Transmitting the user plane information and/or the control plane information to the mobility management network element device; the first IP address is an address used by the packet data network gateway PGW device and the serving gateway SGW of the non-operator network, The second IP address is an address used by the SGW of the PGW device and the carrier network to interact;

15. A notification system for an internet protocol address, comprising:

Accessing the network element device, configured to acquire a first Internet Protocol IP address and a second IP address, and send a message including the first IP address and the second IP address to the mobility management network element device; The IP address is an address used by the packet data network gateway PGW and the serving gateway SGW of the non-operator network, and the second IP address is an address used by the PGW and the SGW of the carrier network to interact;