WO2013033883A1

WO2013033883A1 - Switchover processing method, mobility management network element, and wireless access network element and system

Info

Publication number: WO2013033883A1
Application number: PCT/CN2011/079337
Authority: WO
Inventors: 陆峰; 朱奋勤; 张艳平
Original assignee: 华为技术有限公司
Priority date: 2011-09-05
Filing date: 2011-09-05
Publication date: 2013-03-14
Also published as: CN103548387B; CN103548387A

Abstract

The present invention relates to a switchover processing method, a mobility management network element, and a wireless access network element and system. The method includes: a source mobility management network element receives a first source to target transparent container sent by a source wireless access network element, the first source to target transparent container containing bearer information about a local access IP network packet data network connection of user equipment; judging that the local access IP network packet data network connection of the user equipment can send the first source to target transparent container and the bearer information about the local access IP network packet data network connection of the user equipment to a target wireless access network element when the target wireless access network element is retained, wherein the local access IP network packet data network connection of the user equipment is a local IP access (LIPA) packet data network connection or a selected IP traffic offload (SIPTO) packet data network connection. The present invention achieves the mobility of LIPA and SIPTO.

Description

Method for processing handover, mobility management network element, radio access network element and system

The present invention relates to the field of communications technologies, and in particular, to a method for processing handover, a mobility management network element, a wireless access network element, and a system. Background technique

Local IP Access (LIP) is a data offloading technology based on the Home evolved Node B network or the Home Node B network. The home evolved base station and the home base station are collectively referred to herein as H(e)NB. The user equipment (UE) can directly access other IP devices in the home or enterprise network through the H(e)NB without crossing the user plane of the mobile operator network, which is relative to the carrier's core network. Some services are directly offloaded from H(e)NB, which reduces the load and transmission costs of the core network. When a user uses a LIPA service, the UE needs to establish a Packet Data Network (PDN) connection, which is called a Local IP Access Packet Data Network (LIPA PDN) connection.

Selecting IP Traffic Offload (SIPTO) is similar to LIPA. Users can directly access a specific IP network, such as the Internet, through H(e)NB. Similarly, when a user uses a SIPTO service, the UE needs to establish a PDN connection, called a SIPTO PDN connection.

When the user equipment moves, the user equipment may move from the service range of one H(e)NB to the service range of another H(e)NB. At this time, in order to maintain the continuity of the service, the PDN connection established in the source radio access network element needs to remain in the target radio access network element.

Currently, LIPA and SIPTO do not support mobility, that is, when the user equipment moves from the source H(e)NB to the destination H(e)NB, switching between the LIPA PDN connection and the SIPTO PDN connection to the target H(e)NB is not supported. Summary of the invention

Embodiments of the present invention provide a method for processing handover, a mobility management network element, a radio access network element, and a system, to solve the problem that LIPA and SIPTO do not support mobility. An embodiment of the present invention provides a method for processing handover, including:

The source mobility management network element receives the first source-to-target transparent container sent by the source radio access network element, where the first source-to-target transparent container includes the radio bearer information of the local access IP network packet data network connection of the user equipment;

The mobility management network element determines that the local access IP network packet data network connection of the user equipment can send the first source to the target transparent container and the local access IP network of the user equipment when the target radio access network element is reserved. The radio access bearer information of the packet data network is connected to the target radio access network element, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment; wherein, the local connection of the user equipment The IP network packet data network connection is either a LIPA PDN connection or a SIPTO PDN connection.

The embodiment of the invention further provides a mobility management network element, including:

a receiving module, configured to receive a first source-to-target transparent container sent by the source radio access network element, where the first source-to-target transparent container includes wireless bearer information of the local access IP network packet data network connection of the user equipment;

a judging module, configured to determine that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element;

a sending module, configured to send the radio access bearer information of the first source-to-target transparent container and the local access IP network packet data network connection of the user equipment to the target radio access network element, so that the target radio access network element is The local access IP network packet data network connection of the user equipment establishes a bearer;

The determining module determines that the local access IP network packet data network connection of the user equipment can be reserved by the target radio access network element, and the sending module sends the first source to the target transparent container and the local access IP network of the user equipment. The radio access bearer information of the packet data network connection to the target radio access network element; wherein, the local access IP network packet data network connection of the user equipment is a LIPA PDN connection or

SIPTO PDN connection.

The embodiment of the invention further provides a radio access network element, including:

a sending module, configured to send a first source-to-target transparent container to the mobility management network element, where the first source-to-target transparent container includes a local bearer IP network packet data network connected to the user equipment Information, so that the mobility management network element switches the local access IP network packet data network connection of the user equipment to the target radio access network element;

The local access IP network packet data network connection of the user equipment is a LIPA PDN connection or a SIPTO PDN connection.

The embodiment of the invention further provides a system for processing switching, including:

a radio access network element, configured to send a first source to a target transparent container, where the first source-to-target transparent container includes radio bearer information of a local access IP network packet data network connection of the user equipment;

a mobility management network element, configured to receive the first source-to-target transparent container, and determine that the local access IP network packet data network connection of the user equipment can send the first source to the target when the target radio access network element remains Transmitting, by the transparent container, the radio access bearer information of the local access IP network packet data network of the user equipment to the target radio access network element, so that the target radio access network element is a local access IP network group of the user equipment The data network connection establishes a bearer;

The embodiment of the present invention determines that the target radio access network element can retain the local access IP network packet data network connection of the user equipment, and then sends the source of the radio bearer information including the local access IP network packet data network connection of the user equipment to The target transparent container and the radio access bearer information of the local access IP network packet data network of the user equipment are connected to the target radio access network element, and the mobility of LIPA and SIPT0 is realized. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description For some embodiments of the present invention, other drawings may be obtained from those skilled in the art without departing from the drawings.

FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present invention; FIG.

2 is a schematic diagram of a first Femtoce ll system according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a first handover procedure according to an embodiment of the present invention; FIG.

4 is a schematic diagram of a second handover procedure according to an embodiment of the present invention;

FIG. 5 is a flow chart of a method for processing a first processing handover according to an embodiment of the present invention;

6 is a schematic diagram of a second Femtoce l l system according to an embodiment of the present invention;

FIG. 7 is a schematic flowchart of a second method for processing handover according to an embodiment of the present disclosure;

FIG. 8 is a schematic flowchart of a third method for processing handover according to an embodiment of the present disclosure;

FIG. 9 is a schematic flowchart of a fourth method for processing handover according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of a mobility management network element according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of a radio access network element according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of a system for processing handover according to an embodiment of the present invention. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work are within the scope of the present invention.

The network architecture and the service scenario described in the following embodiments of the present invention are intended to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention. The evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.

The following is an example of a femtocell l l technology.

Femtoce ll is a general term for low-power wireless access point technology. It uses licensed spectrum to connect wireless terminals, such as mobile devices, tablet computers, etc., using digital subscriber lines for home occupants (Dig i ta l Subscr Iber L ine (DSL), cable broadband access to the mobile operator's network.

The purpose of the Femtoce ll system application is to solve blind spots and shadow areas that are difficult to cover, such as tunnels, underground garages, underground passages, underground shopping malls, low-rise buildings and top floors of high-rise buildings. It can solve the signal coverage of the traffic hotspots in the commercial center, the traffic center, the entertainment center, and the conference center. It can reduce the communication blocking rate and improve the communication quality of these areas. It is also often deployed in the middle layer of high-rise buildings, which can effectively avoid mobile phones. Frequent switching or even dropped calls.

Figure 1 exemplarily shows an architecture of a home access system using Femtocell technology. As shown in Figure 1, the user equipment can access the home wireless access point, such as: Home NodeB (HNB), Home evolved NodeB (HeNB), or home non-3GPP wireless access point (Home non- 3GPP Wireless Access Point, Home non-3GPP WAP ), where 3GPP is the third-generation partner program, the 3rd Generation Partnership Project. The HNB is a home wireless access point operating in the UMTS terrestrial radio access network (UTRAN), where UMTS is the generic name of the Universal Mobile Telecommunications System. The HeNB is a home wireless access point operating in the Evolved UMTS terrestrial radio access network (E-UTRAN) spectrum. Home non-3GPP WAP is a home wireless access point operating in the non-3GPP network spectrum, where the non-3GPP network can be a Code Division Multiple Access (CDMA) network, global microwave access interoperability. ( Worldwide Interoperability for Microwave Access , Wimax ) Network, Wireless Local Area Network (WLAN) network, or High Rate Packet Data (HRPD) network. HNB and HeNB are collectively referred to herein as H(e)NB.

In FIG. 1, a Home NodeB Gateway (HNB GW), a Home evolved NodeB Gateway (HeNB GW), and a Home Non-3GPP Wireless Access Point Gateway (Home) The non-3GPP WAP GW is a gateway network element of the home wireless access point, and is connected to the HNB, the HeNB, and the Home non-3GPP WAP through the universal IP access network, respectively. One of ordinary skill in the art will appreciate that in other home access system architectures, the home wireless access point can be directly connected to the network element in the mobile network.

Figure 1 also includes: Mobility Management Entity ME in E-UTRAN, GPRS (General Packet Radio Service) / Serving GPRS Supporting Node (SGSN) in UMTS and non-3GPP networks. Non-3GPP Gateway. The non-3GPP gateway in the non-3GPP network may be an Evolved Packet Data Gateway (EPDG) in the WLAN, an Access Service Network Gateway (ASN GW) in the Wimax, or a connection in the CDMA. In the gateway (Access Gateway, AGW) and the HRPD Serving Gateway (HSGW) in the HRPD.

In FIG. 1, the home data server may be a Home Subscriber Server (HSS) or a Home Location Register (HLR) for storing subscription information of the UE. The Authentication Authorization and Accounting Server (AAA Server) is used to perform access authentication, authorization, and accounting functions for the UE.

In order to restrict UE access to a specific home wireless access point, a Closed Subscriber Group (CSG) mechanism is introduced. A CSG area allows UEs that subscribe to the CSG to access, and restricts access to UEs that have not subscribed to the CSG. A CSG area is identified by a CSG ID (CSG ID), and each CSG area contains one or several cells, and cells of the same CSG area have the same CSG ID. For a UE, the CSG ID of all CSG areas allowed to access it constitutes an Allowed CSG List of the UE, which may also be called a CSG White List, which is a CSG White List. It is included in the subscription data of the UE and configured in the UE. After the UE accesses the network, the mobility management network element obtains the subscription data of the UE from the home data server, thereby obtaining information such as the Allowed CSG List of the UE, and performing CSG access control on the UE. The mobility management network element may be an MME or an SGSN, and the home data server may be an HSS or an HLR.

When the UE accesses through the H(e)NB, if the UE accesses a specific IP network, such as the Internet, SIPT0 technology can be used, that is, data transmission directly with the Internet through the H(e)NB without going through the carrier's core network. In order to attract customers, operators have also introduced LI PA technology, which allows users to access other IP devices, such as printers, fax machines, etc., which are also in the local home or corporate network through H (e) NB. .

For a clearer understanding of the technical solution provided by the embodiment of the present invention, the Femtocell deployed by the hypothetical H enterprise is taken as an example.

As shown in Figure 2, the enterprise includes the area, area B, and area C, belonging to the same local home network. Local Home Network (LHN). The area A includes H (e) NB 141 and H (e) NB 142, the area B includes H (e) NB 143 and H (e) NB 144, and the area C includes H (e) NB 145 and H (e) NB 146. H(e) NB141 and H(e) NB142 of area A are connected to H(e)NB GW111, H(e) NB143 and H(e) NB144 of area B are connected to H(e)NB GW112, area H of area C (e) NB 145 and H (e) NB 146 are connected to H (e) NB GW 113. The H(e)NB GW 111 and the H(e)NB GW 112 access the mobility management network element 101, and the H(e)NB GW 113 accesses the mobility management network element 102. The H (e) NBs of the area A, the area B, and the area C can access the intra-enterprise IP network 121 and the Internet l22. The enterprise internal IP network 121 includes devices such as a printer 131 and a fax machine 132.

A person skilled in the art should understand that when the access network is a 2G/3G network, the wireless access point is an HNB, and the mobility management network element is an SGSN. When the access network is an LTE network, the wireless access point is a HeNB. The mobility management network element is an MME.

As shown in FIG. 2, the user equipment 151 accesses the H(e)NB 146 and accesses the intra-enterprise IP network 121 through the H(e)NB 146. At this point, a LIPA PDN connection 161 is established.

As shown in FIG. 1, when the user equipment 151 moves in the area C and switches from the H(e) NB 146 to the H(e) NB 145, since the prior art does not support the mobility of the LIPA, the LIPAP 匪 connection 161 cannot be in the target wireless. The access network element H(e)NB 145 remains, and the LIPA P-connection 161 will be deactivated during the move.

Similarly, as shown in FIG. 2, when the user equipment 151 accesses the H(e)NB 146 and accesses the Internet l22 through the H(e)NB 146, a SIPTO PDN connection 162 is established. After the user equipment 151 switches from the H(e)NB 145 to the H(e)NB 145, since the prior art does not support the mobility of the SIPT0, the SIPTO P匪 connection 162 cannot be reserved in the target radio access network element H(e)NB 145. The SIPTO P connection 162 will be deactivated during the move.

Assuming that the user equipment 151 is established with the LIPA P匪 connection 161, the specific flow of the user equipment 151 switching from the H(e)NB 146 to the H(e)NB 145 is as shown in FIG. 3. When the user equipment 151 switches from the H(e)NB 146 to the H(e)NB 145, the H(e)NB 146 is the source radio access network element, and the H(e)NB 145 is the target radio access network element. Since both the H (e) NB 146 and the H (e) NB 145 are connected to the mobility management network element 102, both the mobility management network element on the source side and the mobility management network element on the target side are the mobility management network element 102. 201 : H (e) NB146 performs decision switching;

H (e) NB 146 as the source side H (e) NB, the target radio access network element that decides to switch, that is, the target radio access network element that needs to be handed over according to the measurement report, where it is determined that the user equipment 151 will switch to the target radio Access network element H (e) NB145.

202: H (e) NB 146 sends a HO Required message to the mobility management network element 102; if the user equipment 151 has a LIPA P匪 connection, the H (e) NB 146 needs to initiate deactivation of the LIPA before initiating the handover procedure. The process of P匪 connection. H (e) NB 146 may determine whether there is a LIPA P匪 connection based on its locally stored UE context information.

After the UE's LIPA P匪 connection is deactivated on the source side, H(e)NB146 constructs a Source to Target Transparent Conta iner and sends the source to the target transparent container in the handover request message. To the mobility management network element 102. The source-to-target transparent container includes radio bearer information of a packet data network connection that the target radio access network element needs to create, and the source-to-target transparent container includes the radio bearer information of the packet data network connection that the target radio access network element needs to create. The radio bearer information that does not contain the LIPA PDN connection described above, that is, the radio bearer information of the LIPA PDN connection 161 of the user equipment 151 will not be included in the source-to-target transparent container. The source-to-target transparent container is a type of cell, and the cell is transparent to the network element of the core network, that is, the network element of the core network can identify the type of the cell, and cannot or does not need to be parsed. The specific content of the cell, and the network element of the core network cannot modify the cell. The radio bearer information is information required to establish a radio bearer between the user equipment and the radio access network element, including information such as a radio resource control container and a handover type.

203: The mobility management network element 102 sends a handover request (HO Reques t) message to the H (e) NB 145; the handover request message sent by the mobility management network element 102 includes the received source-to-target transparent container, and the wireless access Host list. The radio access bearer list includes the radio access bearer information of the user equipment packet data network that the target radio access network element needs to create, but does not include the radio access bearer information of the LIPA P匪 connection 161; when mobility management When the network element is 匪E, the radio access bearer list is E_RABs To Be Setup Li st, and when the mobility management network element is SGSN, the radio access bearer list is RABs To Be Setup Li st. The radio access bearer information is a radio access network element and a service gateway. The information needed to establish the bearer between the bearer, the GPRS Tunneling Protocol (GTP) tunnel identifier and the quality of service.

204: H(e)NB145 sends a handover request response (HO Request Ack) to the mobility management network element

102;

H (e) The NB 145 establishes a bearer according to the received source-to-target transparent container and the radio access bearer list. If the NB is successfully created, the handover request response message includes the radio access bearer information of the successfully established radio access bearer. It is assumed that the radio bearer information contained in the source-to-target transparent container and the radio access bearer information included in the radio access bearer list cannot be matched. In the 2G/3G network, the handover fails. In the LTE network, the HeNB 145 only creates the radio. Bearer information and radio access bearer information - corresponding radio bearers and radio access 7 carriers.

205: The mobility management network element 102 sends a handover command (HO Command) message to the H (e) NB 146.

H (e) MB146 performs a subsequent switching action after receiving the handover command message.

Similarly, if the UE establishes a SIPTO P匪 connection, the prior art does not support the mobility of the SIPTO in the handover process, that is, the SIPTO P匪 connection cannot be retained in the target radio access network element.

It can be seen that in the scenario where the user equipment has a LIPA P匪 connection or a SIPTO P匪 connection, the prior art does not support LIPA or SIPTO mobility, that is, the LIPA PDN connection or the SIPTO PDN connection cannot be retained in the target radio access network element.

Assuming that the user equipment 151 is connected at the H(e)NB 145, the user equipment 151 has a LIPA P匪 connection, and when the user equipment 151 moves from the area C to the area B, the H (e) NB 145 is the source radio access network element, H (e The NB 144 is the target radio access network element. Since the H(e)NB 145 accesses the mobility management network element 102 and the H(e)NB 144 accesses the mobility management network element 101, the mobility management network element 102 is the source mobility. The management network element, the mobility management network element 101 is a target mobility management network element.

The specific process is shown in Figure 4:

301: H(e)NB145 performs decision switching;

Step 301 is similar to step 201. The H(e)NB 145 determines that the user equipment 151 will switch to the target radio access network element H(e)NB 144.

302: H(e) NB145 sends a handover requirement message to the mobility management network element 102; Step 302 is similar to step 202. The source-to-target transparent container constructed by the H(e)NB 145 does not include the radio bearer information of the LIPA P匪 connection of the user equipment 151.

303: The mobility management network element 102 sends a Forward Relocating Reques t message to the mobility management network element 101.

The forwarding relocation request message includes a received source-to-target transparent container and a packet data network (P2D) context; the P匪 context does not include the radio access bearer information of the LIPA P匪 connection of the user equipment 151. .

304: The mobility management network element 101 sends a handover request message to H (e) NB 145;

Step 304 is similar to step 203. The handover request message includes a source-to-target transparent container and a radio access bearer list, where the radio access bearer list is constructed according to the acquired P匪 context, because the PDN context does not include the user equipment 151. The LIPA P匪 connected radio access bearer information, so the radio access bearer list also does not contain the radio access bearer information of the LIPA P匪 connection of the user equipment 151.

305: H (e) NB 145 sends a handover request response message to the mobility management network element 101;

H (e) After receiving the source-to-target transparent container and the radio access bearer list, the NB 145 establishes a radio bearer and a radio access bearer, and sends a handover request response message to the mobility management network element 101 after the establishment is successful.

306: The mobility management network element 101 sends a forwarding relocation response message to the mobility management network element 102;

307: The mobility management network element 102 sends a handover command message to the H (e) NB 146;

H (e) The NB 146 performs a switching action after receiving the handover command message.

It can be seen that in the mobile across the mobility management network element, the prior art still does not support the mobility of LIPA, that is, the LIPA P匪 connection cannot be retained in the target radio access network element. Similarly, the prior art does not support the mobility of SIPT0 in the movement of mobile management network elements.

In summary, the prior art does not support the mobility of LIPA and SIPT0.

By analyzing the causes of the above problems, it is known that the reason why the mobility of the LIPA is not supported is that the source radio access network element and the source mobility management network element do not have the radio bearer information and the radio access bearer connecting the LIPA P匪 of the user equipment. The information is delivered to the target radio access network element, causing the target radio access network element to fail to establish a bearer for the LIPA P匪 connection of the user equipment.

Specifically, the source-to-target transparent container constructed by the source side H(e)NB does not contain the LIPA P匪 connection. The packet data protocol (PDP) context does not include the radio access bearer information of the LIPA P匪 connection, and the radio access bearer list sent by the mobility management network element of the target side to the H(e)NB of the target side It also does not include the radio access bearer information of the LIPA P匪 connection.

Further, in the process of carrying the bearer information, if the radio bearer information in the source-to-target transparent container and the radio access bearer information included in the radio access bearer list cannot be correspondingly, the partial bearer creation fails, if the target wireless The access NE does not meet the establishment conditions of the LIPA P匪 connection of the user equipment, and may also cause the creation of some bearers to fail, which may cause the entire handover process to fail.

It can be seen that the reason for not supporting the mobility of SIPT0 is similar.

In order to solve the above problem, as shown in FIG. 5, an embodiment of the present invention provides a method for processing handover, including:

401: The source mobility management network element receives the first source-to-target transparent container sent by the source radio access network element, where the first source-to-target transparent container includes the radio bearer information of the local access IP network packet data network connection of the user equipment. The local access IP network packet data network connection of the user equipment is a LIPA P匪 connection or a SIPTO P匪 connection;

402: The mobility management network element determines whether the local access IP network packet data network connection of the user equipment is reserved in the target radio access network element;

403: If the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, the source mobility management network element sends the first source to the target transparent container and the local connection of the user equipment. The radio access bearer information connected to the IP network packet data network is sent to the target radio access network element, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment.

In the embodiment of the present invention, the LIPA P匪 connection or the SIPTO P匪 connection is collectively referred to as a local access IP network packet data network connection, and therefore, the local access IP network packet data network connection is a LIPA P匪 connection or a SIPTO P匪 connection.

In the embodiment of the present invention, the source mobility management network element may receive the second source-to-target transparent container sent by the source radio access network element while receiving the first source-to-target transparent container, and the second source to the destination The standard transparent container includes radio bearer information of other packet data network connections of the user equipment, and does not include radio bearer information of the local access IP network packet data network connection of the user equipment, if the user equipment locally accesses the IP network packet data network The connection cannot be reserved by the target radio access network element, and the radio access bearer information of the second source to the target transparent container and the other packet data network of the user equipment is sent to the target radio access network element, so that the target wireless The access network element establishes a bearer for other packet data network connections of the user equipment, and the other packet data network connection does not include the local access IP network packet data network connection of the user equipment.

The other packet data network connections in the embodiments of the present invention are all other packet data network connections of the user equipment that exclude the local access IP network packet data network connection.

In the foregoing method for processing handover, the first source-to-target transparent container includes local access of the user equipment.

The radio bearer information of the IP network packet data network connection refers to the radio bearer information including the local access IP network packet data network connection of the user equipment, and the first source-to-target transparent container does not have the local access of the user equipment part. The case of the radio bearer information of the IP network packet data network connection; the second source-to-target transparent container does not include the local access IP network of the user equipment. The radio bearer information of the data network connection refers to the local access IP that does not include any user equipment. The radio bearer information of the network packet data network connection. The first and second here do not indicate the order, which is used to distinguish the two sources to the target transparent container, not to be confused.

After receiving the first source to the target transparent container, the source mobility management network element determines whether the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, and determines whether the result is determined according to the result of the judgment. Send the first source to the target transparent container to the target radio access network element. When it is determined that the target radio access network element can retain the local access IP network packet data network connection of the user equipment, transmitting the first source-to-target transparent of the radio bearer information including the local access IP network packet data network connection of the user equipment The local access IP network packet data network connection of the container and the user equipment carries the radio access bearer information to the target radio access network element, so that the target radio access network element receives the wireless 7-pack information included in the source-to-target transparent container. And the wireless access 7-package information contained in the 7-row list of the wireless access-correspondingly, the bearer of the local access IP network packet data network connection is successfully created, and the mobility of LIPA and SIPT0 is realized.

The source mobility management network element determines that the local access IP network packet data network connection of the user equipment is The premise that the target radio access network element can be reserved is that the target radio access network element can physically or mechanically realize the function of creating a local access IP network packet data network connection, if the target radio access network element is physically The internal IP network isolation of the enterprise, or the target radio access network element does not have the function of realizing the connection of the local access IP network packet data network, and there is no mobility problem of the LIPA and the IPT0 to be solved by the embodiment of the present invention. In the embodiment of the present invention, determining whether the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element means: the target radio access network element can physically or mechanically create local access. On the premise of the IP network packet data network connection, it is determined whether the target access network element can satisfy the condition for establishing the local access IP network packet data network connection of the user equipment.

When the user equipment performs handover across the mobility management network element, the source mobility management network element sends the packet data of the access IP network of the user equipment to the P匪 context of the mobility management network element of the target side or the PDP context. The radio access bearer information of the network connection, the radio access bearer list sent by the target mobility management network element to the target radio access network element includes the radio access bearer information of the packet data network connection of the access IP network of the user equipment. The radio bearer information of the packet data network connection of the access IP network of the user equipment included in the source-to-target transparent container received by the target radio access network element and the access IP network of the user equipment included in the radio access bearer list are implemented. The wireless access bearer information of the packet data network connection can be - corresponding.

A person skilled in the art may know that, with the development of the network architecture, a new mobility management network element and a new radio access network element supporting LIPA or SIPT0 technology may be present in the future, so the method provided by the embodiment of the present invention is not correct. The source radio access network element, the target radio access network element, the source mobility management network element, and the target mobility management network element involved in the method are defined.

The switching method of the embodiment of the present invention receives, by the source mobility management network element, a first source-to-target transparent container sent by the source radio access network element, where the first source-to-target transparent container includes a packet of the access IP network of the user equipment. The radio bearer information of the data network connection, and the source mobility management network element sends the radio access bearer information of the first source to the target transparent container and the packet data network of the access IP network of the user equipment to the target radio access network element, So that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment, and realizes the mobility of LIPA and SIPT0.

The following is an example of a specific implementation in which a user equipment establishes a LIPA P匪 connection as an example. In some scenarios, for example, in a scenario where the user equipment has left the local home network or left the authorized area of the LIPA, the source radio access network element cannot effectively determine whether the local access IP network packet data network connection of the user equipment is The target radio access network element can be reserved, so the source radio access network element cannot construct the source-to-target transparent container in a targeted manner, that is, it cannot determine whether the LIPA P-connection of the user equipment is included in the source-to-target transparent container. The source radio access NE needs to create two source-to-target transparent containers, send them to the source mobility management NE, and judge through the source mobility management NE to determine whether the LIPA P匪 connection of the user equipment can be in the target radio access. The network element is reserved, and one of the sources is selected to be sent to the target radio access network element according to the judgment result. The first source-to-target transparent container includes radio bearer information of all packet data network connections of the user equipment, that is, not only radio bearer information of other packet data network connections of the user equipment but also radio bearer information of the LIPA P匪 connection of the user equipment. The second source-to-target transparent container contains radio bearer information of all other packet data network connections of the user equipment, and does not include the radio bearer information of the LIPA P匪 connection of the user equipment. The first source-to-target transparent container includes the LIPA of the user equipment, and the radio bearer information refers to the radio bearer information including all LIPA P匪 connections of the user equipment, and the first source-to-target transparent container does not exist. The case where the LIPA P匪 of the device part is connected to the radio bearer information; the second source-to-target transparent container does not contain the LIPA of the user equipment. The radio bearer information of the connection refers to the radio bearer information that does not contain any LIPAP匪 connection of the user equipment.

Since the target radio access network element can only process one source-to-target transparent container, it is required to judge on the source mobility management network element to determine whether the LIPA P-connection of the user equipment can be reserved in the target radio access network element, and According to the result of the judgment, an appropriate source is selected and sent to the target transparent access container to the target radio access network element. When it is determined that the target radio access network element can retain the LIPA P匪 connection of the user equipment, send the first source-to-target transparent container that includes the radio bearer information of the LIPA P匪 connection to the target radio access network element, when determining the target wireless When the access network element cannot reserve the LIPA P匪 connection of the user equipment, the second source to the target transparent access container that does not include the radio bearer information of the LIPA P匪 connection is sent to the target radio access network element.

In the case that the user equipment has multiple LIPA P匪 connections, the source mobility management network element needs to determine the user equipment when determining whether the LIPA P匪 connection of the user equipment can be reserved in the target radio access network element. Whether all LIPAP匪 connections can be reserved in the target radio access network element. When all LIPAP匪 connections of the user equipment can be reserved in the target radio access network element, the first source to the target transparent container is selected for transmission, otherwise, the selection is performed. The second source is sent to the target transparent container.

When the source mobility management network element sends the first source to the target transparent container to the target radio access network element, it also needs to send the LIPA P匪 connected radio access bearer information of the user equipment and the wireless connection of other packet data network connections. Loading information to the target radio access network element, so that the radio bearer information included in the source-to-target transparent container received by the target radio access network element and the radio access bearer information included in the radio access bearer list are correspondingly successful. Create bearers for LIPA P匪 connected bearers and other packet data network connections to achieve LIPA mobility. In the case that the user equipment has multiple LIPA P匪 connections, the radio access bearer information of the LIPA P匪 connection of the sending user equipment refers to the radio access bearer information of all LIPA P匪 connections of the sending user equipment.

Correspondingly, when the source mobility management network element sends the second source to the target transparent container to the target radio access network element, the radio access bearer information of the other packet data network connection of the user equipment needs to be sent to the target radio access. The network element, so that the target radio access network element receives the wireless 7-pack information contained in the source-to-target transparent container and the wireless access 7-load information included in the wireless access 7-load list-correspondingly, the user equipment is successfully A packet data network connection creates a bearer.

When the user equipment performs the handover of the mobility management network element, the source mobility management network element sends the radio connection to the LIPA P匪 connection of the user equipment to the P匪 context of the mobility management network element of the target side or the PDP context. Into the bearer information, the radio access bearer list sent by the target mobility management network element to the H(e)NB of the target side includes the radio access bearer information of the LIPA P匪 connection of the user equipment to implement the target radio access network. The radio bearer information of the LIPA P匪 connection of the user equipment included in the source-to-target transparent container and the radio access bearer information of the LIPA P匪 connection of the user equipment included in the radio access bearer list can be correspondingly.

It can be seen that, according to different mobile situations, the radio access bearer information of the packet data network connection between the sending source and the target transparent container and the user equipment is directly sent to the target radio access network element and indirectly to the target radio access network element. . When the target radio access network element and the source radio access network element access the same mobility management network element, the sending to the target radio access network element refers to directly sending to the target radio access network element; When the target radio access network element and the source radio access network element access different mobility management network elements, the sending to the target radio access network element refers to indirect transmission to the target radio access network element, that is, first to the target. The mobility management network element is then sent to the target radio access network element by the target mobility management network element.

It can be seen that the specific implementation of SIPT0 mobility is similar to the specific implementation of LIPA mobility.

In summary, the processing switching method provided by the embodiment of the present invention receives the first source-to-target transparent container sent by the source radio access network element by using the source mobility management network element, where the first source-to-target transparent container includes the user equipment connection. Transmitting the radio bearer information of the packet data network connected to the IP network, and the source mobility management network element sends the first source to the target transparent container and the packet data network connected to the access IP network of the user equipment to the target wireless The network element is accessed, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment, and implements mobility of LIPA and SIPT0.

Further, the target radio access network element can retain the local access IP network packet data network connection of the user equipment, and the target radio access network element cannot retain the local access IP network of the user equipment. Program:

1) In the case that the target radio access network element and the source radio access network element are in the same local home network, the target radio access network element can retain the local access IP network packet data network connection of the user equipment, otherwise the target radio access The incoming network element cannot maintain the local access IP network packet data network connection of the user equipment.

The target radio access network element and the source radio access network element in the same local home network indicate that the target radio access network element and the source radio access network element belong to the same network. In a realistic scenario, the network may be an enterprise network. a school network, etc., so when the user equipment moves in the same network, it is necessary to ensure the mobility of the local access IP network packet data network connection of the user equipment; when the target radio access network element and the source radio access network element belong to Different networks may move from the network of one enterprise in one office building to the network of another enterprise in a real-life scenario. Therefore, when the user equipment moves to another network, the local access IP of the user equipment should not be retained. Network packet data network connection.

Determining whether the target radio access network element and the source radio access network element are in the same local home network may be determined by a local home network identifier (LHN ID), that is, when the target radio access network element has the LHN ID and the source radio connection. The same LHN ID of the incoming NE indicates the same local home network, otherwise it indicates a different local home network. It will be apparent to those skilled in the art that as technology advances, it is also possible It is determined in other equivalent manner whether the target radio access network element and the source radio access network element are in the same local home network, which is not limited herein.

The source mobility management network element can learn the LHN ID of the target radio access network element and/or the LHN ID of the source radio access network element by using various methods, including the following methods: Source radio access network element to source mobility The LHN ID of the target radio access network element and/or the LHN ID of the source radio access network element sent by the management network element; or the source mobility management network element according to the local configuration information, and the cell identifier of the target radio access network element And/or the cell identifier of the source radio access network element learns the corresponding LHN ID.

The following is explained in a specific scenario. As shown in FIG. 6, in the initial state, the user equipment 151 is connected at H(e)NB 145, and the user equipment 151 has a LIPA P匪 connection 501, assuming that the user equipment 151 continues to move, switching from H(e)NB145 to H ( e) NB144. The specific process is shown in Figure 7:

601: H (e) NB145 performs decision switching;

H (e) NB 145 as the source side H (e) NB, the target radio access network element that decides to switch, that is, the target radio access network element that needs to be handed over according to the measurement report, where it is determined that the user equipment 151 will switch to the target radio Access network element H (e) NB144.

602: H (e) NB 145 sends a handover requirement message to the mobility management network element 102;

H (e) NB 145 builds a first source to target transparent container and a second source to target transparent container. The first source to transparent container includes radio bearer information of other packet data network connections of the user equipment 151, and further includes radio bearer information of the LIPA P匪 connection 501 of the user equipment 151; the second source to target transparent container includes the other of the user equipment 151. The radio bearer information of the packet data network connection does not include the radio bearer information of the LIPA P匪 connection 501 of the user equipment 151. The first source-to-target transparent container and the second source-to-target transparent container constructed above are included in the handover requirement message and sent to the mobility management network element 102, so that the mobility management network element 102 can be based on the target radio access network element. Whether the LIPA P匪 connection 501 can be reserved to select the corresponding source to the target transparent container to send to the target radio access network element.

The handover requirement message may further include an LHN ID and/or a CSG ID of the source radio access network element H (e) NB 145.

603: The mobility management network element 102 determines whether the H (e) NB 144 and the H (e) NB 145 are in the same local home network; The mobility management network element 102 determines whether the LHN ID of the H(e)NB 144 and the LHN ID of the H(e)NB 145 are the same. If they are the same, the H(e)NB 144 and the H(e)NB 145 belong to the same local home network. Otherwise, Indicates that it does not belong to the same local home network. The source mobility management network element may learn the LHN ID of the source radio access network element by using the handover requirement message message; or the source mobility management network element according to the local configuration information and the cell identifier of the source radio access network element (Cell ID) or CSG ID knows the corresponding LHN ID. On the other hand, the source mobility management network element can learn the corresponding LHN ID according to the local configuration information and the cell identity or CSG ID of the target radio access network element.

604: The mobility management network element 102 sends a forwarding relocation request message to the mobility management network element 101; the forwarding relocation request message includes a source-to-target transparent container and a P. context. If the H(e)NB 145 and the H(e)NB 145 belong to the same local home network, the first source-to-target transparent container is included in the forwarding relocation request message, and the radio access of the LIPAP匪 connection 501 is included in the P匪 context. The radio access bearer information that carries the information and the other packet data network of the user equipment; if the H(e)NB 144 and the H(e)NB 145 do not belong to the same local home network, the second source is included in the forwarding relocation request message. To the target transparent container, the radio access bearer information of the other packet data network connection of the user equipment is included in the P匪 context, and the radio access bearer information of the LIPA P匪 connection 501 is not included.

If the H(e)NB 144 and the H(e)NB 145 do not belong to the same local home network, the mobility management network element 102 initiates a deactivation process of the LIPA P匪 connection 501, and deletes the bearer of the UE and the LIPA P匪 connection 501 on the network side. Context, the network side may be a network element such as P_GW, 匪, SGSN, and H(e)NB. The deactivation process initiated by the mobility management network element 102 is also referred to as a P匪 connection deactivation process, and includes: the mobility management network element 102 serves a gateway to send a delete session request message to the packet data gateway, where the deletion session request message includes the LIPA connection 501. The default bearer identifier; the packet data gateway sends a delete session response message to the mobility management network element 102 through the serving gateway; the mobility management network element 102 sends a deactivation bearer request message to the H(e)NB; H(e)NB The UE sends a radio resource control reconfiguration message to enable the user equipment to release resources.

605: The mobility management network element 101 sends a handover request message to the H(e)NB 144;

The handover request message includes the received source-to-target transparent container and the radio access bearer list, and the radio access bearer list is constructed according to the received P匪 context, that is, when the first source to the target is received transparently In the container, the handover request message includes the first source-to-target transparent container. According to the P匪 context, the radio access bearer list may include the radio access bearer information of the LIPAP匪 connection 501; when the second source to the target transparent container is received The switch request message includes a second source-to-target transparent container, and the radio access bearer list does not include the radio access bearer information of the LIPA P匪 connection 501.

606: H (e) NB 144 sends a handover request response message to the mobility management network element 101;

When the H(e)NB 144 receives the first source to the target transparent container, the H(e)NB 144 may be based on the radio bearer information of the LIPA P匪 connection 501 in the first source to the target transparent container and the radio access bearer list. The radio access bearer information of the LIPA P匪 connection 501 is used to create a bearer between the user equipment and the radio access network element and a bearer between the radio access network element and the serving gateway for the LIPA P匪 connection. As shown in Figure 6, H (e) NB establishes LIPA PDN connection 501, which realizes the movement of LIPA PDN connection 501 from H (e) NB145 to H (e) NB144; when H (e) NB144 receives the first When the second source to the target transparent container, since the second source-to-target transparent container and the radio access bearer list do not contain the bearer information of the LIPA P匪 connection 501, the H(e)NB 144 does not create a bearer for the LIPA P匪 connection. .

607: The mobility management network element 101 sends a forwarding relocation response message to the mobility management network element 102;

608: The mobility management network element 102 sends a handover command message to the H(e)NB 145.

H (e) The NB 145 performs a switching action after receiving the handover command message.

It can be seen that the mobility management network element 102 transmits the first source to the target transparent container by determining that the source radio access network element H (e) NB 145 and the target radio access network element H (e) NB 144 are in the same local home network. The LIPA PDN connects the wireless access bearer information of the 501 to the target radio access network element H (e) NB 144, and the target radio access network element H (e) NB 144 creates a corresponding bearer for the LIPA PDN connection 501, and connects the LIPA P匪501 moves from H (e) NB145 to H (e) NB 144, realizing LIPA mobility.

It can be seen by those skilled in the art that, in the above specific scenario, if the user equipment 151 has a SIPT0 PDN connection, the mobility of the SIPT0 can also be implemented by using the method of the embodiment of the present invention.

Solution 1) It is applicable to the case where the user equipment establishes a SIPTO P匪 connection or a LIPA P匪 connection. The following scheme is applicable to the case where the user equipment establishes a LIPA P匪 connection.

When the local access IP network packet data network connection of the user equipment is a LIPA P匪 connection, based on the first scheme, the target radio access network element may be determined by the closed user group. Whether it is possible to reserve the local access IP network packet data network connection of the user equipment. The plan is as follows:

2) When the user equipment establishes the LIPA P匪 connection, the target radio access network element and the source radio access network element are in the same local home network and the user equipment is allowed to access the closed user group where the target radio access network element is located ( In the case of CSG), the target radio access network element can retain the LIPA P匪 connection of the user equipment; when the target radio access network element and the source radio access network element are in the same local home network, but the user equipment does not allow access In the case of the CSG where the target radio access network element is located, the target radio access network element cannot retain the LIPA P匪 connection of the user equipment.

On the premise that the target radio access network element and the source radio access network element belong to the same network, for security or service needs, it may be further determined whether the user equipment has the right to enter the CSG of the target radio access network element. In a real-life scenario, an enterprise may be divided into multiple zones, such as a R&D zone, an office zone, etc. For security reasons, the user equipment of the R&D zone can only access the internal IP network of the enterprise in the R&D zone, but cannot access the office. The district comes to access the internal IP network of the enterprise. Therefore, when the user equipment moves in the same network, it is further determined whether the user equipment is allowed to access the CSG where the target radio access network element is located. When the user equipment allows access to the CSG where the target radio access network element is located, the target device needs to be in the target. The radio access network element maintains the LIPA P匪 connection of the user equipment; when the user equipment does not allow access to the CSG where the target radio access network element is located, the LIPA P匪 connection of the user equipment should not be maintained.

Determining whether the user equipment is allowed to access the CSG where the target radio access network element is located may be determined by determining whether the CSG ID of the target radio access network element belongs to the permitted closed user group list (Al lowed CSG Li st ) of the user equipment. That is, when the CSG ID of the target radio access network element is in the Al lowed CSG Li st of the user equipment, it indicates that the user equipment is allowed to access the CSG where the target radio access network element is located, otherwise the user equipment is not allowed to access the target wireless. Access to the CSG where the NE is located. The mobility management network element may obtain the CSG ID according to the local configuration, the information reported by the radio access network element to the mobility management network element when the power is turned on, or the identifier of the local home network, and the mobility management network element may also be obtained from the home user. The server obtains the Al lowed CSG Li st of the user equipment, which is not limited herein. With the development of the technology, it is also possible to determine whether the user equipment is allowed to access the CSG where the target radio access network element is located in other equivalent manners, which is not limited herein.

The following is explained in a specific scenario. Here is still illustrated using the scene of Figure 6, as shown in Figure 6. As shown, in the initial state, the user equipment 151 is accessed at the H(e)NB 145, and the user equipment 151 has the LIPA PDN connection 501, assuming that the user equipment 151 continues to move, switching from the H(e)NB 145 to the H(e)NB 144 . Assume that the CSG ID of Zone C is different from the CSG ID of Zone B. The specific process is shown in Figure 8:

701: H(e)NB145 performs decision switching;

The H(e)NB 145 acts as the source side H(e)NB, and decides to switch the target radio access network element, that is, determines the target radio access network element to be switched according to the measurement report, where it is determined that the user equipment 151 will switch to the target radio. Access network element H (e) NB144.

702: H(e)NB145 sends a handover requirement message to the mobility management network element 102;

H(e) NB145 constructs a first source to target transparent container and a second source to target transparent container. The first source to transparent container includes radio bearer information of other packet data network connections of the user equipment 151, and also includes radio bearer information of the LIPA P匪 connection 501 of the user equipment 151; the second source to target transparent container includes the user equipment 151. The radio bearer information of the other packet data network connection does not include the radio bearer information of the LIPA P匪 connection 501 of the user equipment 151. The first source-to-target transparent container and the second source-to-target transparent container constructed as above are included in the handover requirement message and sent to the mobility management network element 102, so that the mobility management network element 102 can be based on the target radio access network element. Whether the LIPA P匪 connection 501 can be reserved to select the corresponding source to target transparent container to send to the target radio access network element.

The handover requirement message may further include an LHN ID and/or a CSG ID of the source radio access network element H(e)NB145, and/or an LHN ID of the H(e)NB 144 (ie, the target radio access network element) and/or Or CSG ID.

Before performing step 702, the method may further include: obtaining, by the source radio access network element, an LHN ID of the target radio access network element and an LHN ID of the source radio access network element, if the LHN ID and H of the H(e)NB144 ( e) If the LHN ID of the NB 145 is the same, the step 702 is triggered, or if the LHN ID of the H (e) NB 144 and the LHN ID of the H (e) NB 145 are not the same, only one source of the bearer that does not include the LIPA P 匪 connection is constructed. The transparent management container is sent to the mobility management network element on the source side. For details, refer to step 202.

703: The mobility management network element 102 determines whether the H(e)NB 144 and the H(e)NB 145 are in the same local home network and determines whether the user equipment 151 is allowed to access the CSG where the H(e)NB 144 is located.

Specifically, the mobility management network element 102 determines the LHN ID of the H(e)NB 144 and the LHN of the H(e)NB145. If the IDs are the same, if they are the same, it means that H(e)NB144 and H(e)NB145 belong to the same local home network, otherwise it means that they do not belong to the same local home network. The source mobility management network element may learn the LHN ID of the source radio access network element by using the handover requirement message message; or the source mobility management network element according to the local configuration information and the cell identifier of the source radio access network element (Cell ID) or CSG ID knows the corresponding LHN ID. Similarly, the source mobility management network element may obtain the LHN ID of the target side radio access network element by using the handover requirement message message; or the source mobility management network element may be based on the local configuration information and the cell identifier of the target radio access network element or The CSG ID is informed of the corresponding LHN ID.

The mobility management network element 102 determines whether the CSG ID of the H(e)NB 144 is in the Allowed CSG List of the user equipment 151. If the CSG ID of the H(e)NB 144 is included in the Allowed CSG List of the user equipment 151, the user equipment is represented. 151 allows access to the CSG where the H(e)NB 144 is located, otherwise it indicates that the user equipment 151 does not allow access to the CSG where the H(e)NB 144 is located.

704: The mobility management network element 102 sends a forwarding relocation request message to the mobility management network element 101. The forwarding relocation request message includes a source-to-target transparent container and a P. context. If the H(e)NB 145 and the H(e)NB 145 belong to the same local home network and the user equipment 151 allows access to the CSG where the H(e)NB 144 is located, the first source-to-target transparent container is included in the forward relocation request message. The radio access bearer information of the LIPA P匪 connection 501 and the radio access bearer information of other packet data network connections of the user equipment are included in the P匪 context; if the H(e)NB144 and the H(e)NB145 belong to the same local The home network, but the user equipment 151 is not allowed to access the CSG where the H(e)NB 144 is located, and the second source-to-target transparent container is included in the forwarding relocation request message, and other packet data networks of the user equipment are included in the P匪 context. The connected radio access bearer information does not include the radio access information of the LI PA P匪 connection 501.

If the H(e)NB 144 and the H(e)NB 145 do not belong to the same local home network and the user equipment 151 does not allow access to the CSG where the H(e)NB 144 is located, the mobility management network element 102 initiates the LIPA P匪 connection 501. The activation process deletes the bearer context of the LIPA P-connection 501 of the UE and the network side, and the network side may be a network element such as P-GW, 、, SGSN, and H(e)NB. The deactivation process initiated by the mobility management network element 102 is also referred to as a P匪 connection deactivation process, and includes: the mobility management network element 102 serves a gateway to send a delete session request message to the packet data gateway, where the deletion session request message includes the LIPA connection 501. Lack of The bearer data identifier is sent by the packet data gateway to the mobility management network element 102 through the serving gateway; the mobility management network element 102 sends a deactivation bearer request message to the H(e)NB; H (e) NB sends the message to the UE The radio resource controls the reconfiguration message to enable the user equipment to release the resource.

705: The mobility management network element 101 sends a handover request message to the H(e)NB 144;

The handover request message includes the received source-to-target transparent container and the radio access bearer list, and the radio access bearer list is constructed according to the received P匪 context, that is, when the first source to the target transparent container is received, The handover request message includes a first source-to-target transparent container. According to the P匪 context, the radio access bearer list may include the radio access bearer information of the LIPAP匪 connection 501; when the second source to the target transparent container is received, the handover is performed. The request message includes a second source-to-target transparent container, and the radio access bearer list does not include the radio access bearer information of the LIPA P-connection 501.

706: H(e)NB 144 sends a handover request response message to the mobility management network element 101;

When the H(e)NB 144 receives the first source to the target transparent container, the H(e)NB 144 may be based on the radio bearer information of the LIPA P匪 connection 501 in the first source to the target transparent container and the radio access bearer list. The radio access bearer information of the LIPA P匪 connection 501 is used to create a bearer between the user equipment and the radio access network element and a bearer between the radio access network element and the serving gateway for the LIPA P匪 connection, as shown in FIG. H(e)NB establishes a LIPA PDN connection 501, which implements the movement of the LIPA PDN connection 501 from H(e)NB145 to H(e)NB144; when the H(e)NB144 receives the second source to the target transparent container When the second source-to-target transparent container and the radio access bearer list do not contain the bearer information of the LIPA P-connection 501, the H(e)NB 144 does not create a bearer for the LIPA P-connection.

707: The mobility management network element 101 sends a forwarding relocation response message to the mobility management network element 102;

708: The mobility management network element 102 sends a handover command message to the H(e)NB 145.

It can be seen that the mobility management network element 102 determines that the source radio access network element H(e)NB 145 and the target radio access network element H(e) NB 144 are in the same local home network and the user equipment 151 allows access to the target radio access. The network element H (e) the CSG where the NB 144 is located, and further sends the radio access bearer information of the first source to the target transparent container and the LIPA PDN connection 501 to the target radio access network element H(e)NB144, the target radio access network element. H(e)NB144 creates a corresponding bearer for the LIPA PDN connection 501, and connects the LIPA PDN to the 501 from H (e) NB145 moves to H (e) NB144 to achieve LIPA mobility.

Further, the case where the user equipment moves in the same CSG is that the target radio access network element and the source radio access network element are in the same local home network, and the user equipment is allowed to access the closed user group where the target radio access network element is located. A special case in which the user equipment moves in the same CSG can satisfy the above-mentioned judgment condition. Therefore, by determining that the CSG ID of the source radio access network element and the CSG ID of the target radio access network element are the same, that is satisfied. The condition that the target radio access network element and the source radio access network element are in the same local home network and the user equipment allows access to the target radio access network element.

On the basis of the scheme 2), further, the access point name can be used to determine whether the target radio access network element can retain the local access IP network packet data network connection of the user equipment. The plan is as follows:

3) When the user equipment establishes the LIPA P匪 connection, the target radio access network element and the source radio access network element are in the same local home network, and the user equipment is allowed to access the CSG where the target radio access network element is located and the user equipment The access point name (APN) of the LIPA P匪 connection allows the target radio access network element to retain the LI PA P匪 connection of the user equipment in the case where the CSG of the target radio access network element is accessed. When the target radio access network element and the source radio access network element are in the same local home network and the user equipment is allowed to access the CSG where the target radio access network element is located, but the access point name APN of the LIPA P匪 connected by the user equipment The target radio access network element is not allowed to retain the LIPA P匪 connection of the user equipment when the CSG where the target radio access network element is located is not allowed to access.

After the target radio access network element and the source radio access network element belong to the same network, and the user equipment has the right to enter the CSG where the target radio access network element is located, further determine the APN of the user equipment's LIPA P匪 connection. Whether access is allowed in the CSG where the target radio access network element is located can implement control of access to the internal IP network of the enterprise. For example: The internal IP network of the enterprise is divided into the printer network and the fax machine network. The R&D area can only access the printer network. The office area can access the printer network and the fax machine network. When the user equipment exists in the office area, there is LIPA connected to the fax machine network. After connecting and moving to the R&D area, the LIPA P匪 connection will not be retained. The APN identification can control the access control of the user equipment to the printer network and the fax machine network. Therefore, when the APN of the user equipment's LIPA P匪 connection is also allowed to access in the CSG where the target radio access network element is located, the target radio access network element needs to maintain the LIPA P匪 connection of the user equipment; The LIPA P匪 connection of the device is connected. The APN is not allowed to access in the CSG where the target radio access NE is located, and the LIPA PDN connection of the user equipment should not be retained.

Determining whether the APN of the user equipment's LIPA P匪 is allowed to access in the CSG where the target radio access network element is located, and determining whether the user equipment's LIPA is included in the APN list corresponding to the CSG where the target radio access network element is located. The PPN connected to the APN is implemented. When the APN list corresponding to the CSG where the target radio access NE is located contains the APN of the LIPA P匪 connected by the user equipment, the APN of the LIPA P匪 connected to the user equipment is connected to the target radio. The access is allowed in the CSG where the incoming NE is located. Otherwise, the APN connected to the LIPA P匪 of the user equipment is not allowed to access in the CSG where the target radio access NE is located. The mobility management network element can obtain a list of APNs corresponding to a certain CSG from the home subscriber server, which is not limited herein. With the development of the technology, it is also possible to determine whether the APN connected to the LIPA PDN is allowed to access in the CSG where the target radio access network element is located, which is not limited herein.

The following is explained in a specific scenario. Here, the scenario of FIG. 6 is used for description. As shown in FIG. 6, in the initial state, the user equipment 151 is connected at the H(e)NB 145, and the user equipment 151 has the LIPA P匪 connection 501, and the user equipment 151 passes the LIPA P匪. The connection 501 accesses the internal IP network 121 of the enterprise to use its internal printer, assuming that the user equipment 151 continues to move, switching from H (e) NB 145 to H (e) NB 144 ₀ assuming the CSG ID of the C zone and the CSG ID of the B zone Different, the specific process is shown in Figure 9:

801: H (e) NB145 performs decision switching;

802: H (e) NB 145 sends a handover requirement message to the mobility management network element 102;

H (e) NB 145 builds a first source to target transparent container and a second source to target transparent container. The first source to transparent container includes radio bearer information of other packet data network connections of the user equipment 151, and also includes radio bearer information of the LIPA P匪 connection 501 of the user equipment 151; the second source to target transparent container includes the user equipment 151. The radio bearer information of the other packet data network connection does not include the radio bearer information of the LIPA P匪 connection 501 of the user equipment 151. The first source to target transparent container and the above constructed The two-source to target transparent container is included in the handover request message and sent to the mobility management network element 102, so that the mobility management network element 102 can select the corresponding according to whether the target radio access network element can retain the LIPA P-connection 501. The source to target transparent container is sent to the target radio access network element.

The handover request message may further include an LHN ID and/or a CSG ID of the source radio access network element H(e)NB145, and/or an LHN ID of the H(e)NB 144 (ie, the target radio access network element). / or CSG ID.

Before performing step 802, the method may further include: obtaining, by the source radio access network element, an LHN ID of the target radio access network element and an LHN ID of the source radio access network element, if the LHN ID and H of the H(e)NB144 ( e) If the LHN ID of the NB 145 is the same, the step 802 is triggered, or if the LHN ID of the H (e) NB 144 and the LHN ID of the H (e) NB 145 are not the same, only one source of the bearer that does not include the LIPA P匪 connection is constructed. The transparent management container is sent to the mobility management network element on the source side. For the subsequent execution steps, refer to step 202.

803: The mobility management network element 102 determines whether the H(e)NB 144 and the H(e)NB 145 are in the same local home network, determines whether the user equipment 151 allows access to the CSG where the H(e)NB 144 is located, and determines the LIPA PDN connection 501. Whether the APN is allowed to access in the CSG where the H (e) NB 144 is located;

Specifically, the mobility management network element 102 determines whether the LHN ID of the H(e)NB 144 and the LHN ID of the H(e)NB 145 are the same. If the same, the H(e)NB144 and the H(e)NB145 belong to the same local home. Network, otherwise it means not belonging to the same local home network. The source mobility management network element may learn the LHN ID of the source radio access network element by using the handover requirement message message; or the source mobility management network element according to the local configuration information and the cell identifier of the source radio access network element (Cell ID) or CSG ID knows the corresponding LHN ID. Similarly, the source mobility management network element may obtain the LHN ID of the target side radio access network element by using the handover requirement message message; or the source mobility management network element may be based on the local configuration information and the cell identifier of the target radio access network element or The CSG ID is informed of the corresponding LHN ID.

The mobility management network element 102 determines whether the APN of the LIPA PDN connection 501 is at H (e) NB 144 In the APN list corresponding to the CSG, if the APN of the LIPA PDN connection 501 is in the APN list corresponding to the CSG where the H (e) NB 144 is located, it indicates that the APN of the LIPA PDN connection 501 is allowed to access in the CSG where the H (e) NB 144 is located. Otherwise, the APN indicating the IPA P匪 connection 501 is not allowed to access in the CSG where the H (e) NB 144 is located.

804: The mobility management network element 102 sends a forward relocation request message to the mobility management network element 101; the forward relocation request message includes a source-to-target transparent container and a P. context. If H (e) NB 144 and H (e) NB 145 belong to the same local home network, user equipment 151 allows access to the CSG where H (e) NB 144 is located and the APN of LIPA PDN connection 501 is in the CSG where H (e) NB 144 is located. To allow access, the first source-to-target transparent container is included in the forwarding relocation request message, and the radio access bearer information of the LIPA PDN connection 501 and the other packet data network connection of the user equipment are included in the P匪 context. Bearer information; if H (e) NB 144 and H (e) NB 145 belong to the same local home network and user equipment 151 allows access to the CSG where H (e) NB 144 is located, but the APN of L IPA P 匪 connection 501 is at H (e) If the access is not allowed in the CSG where the NB 144 is located, the second source-to-target transparent container is included in the forwarding relocation request message, and the radio access bearer information of the other packet data network connection of the user equipment is included in the P 匪 context, The radio access bearer information including the LIPA P匪 connection 501.

If H (e) NB 144 and H (e) NB 145 do not belong to the same local home network, user equipment 151 does not allow access to the CSG where H (e) NB 144 is located and the APN of LIPA P 匪 connection 501 is not allowed in H (e) In the CSG where the NB 144 is located, the mobility management network element 102 initiates a deactivation process of the LIPA P 匪 connection 501, and deletes the context of the L IPA PDN connection 501 of the UE and the network side. The network side may be a P-GW, an MME, or Network elements such as SGSN and H (e) NB. The deactivation process initiated by the mobility management network element 102 is also referred to as a P匪 connection deactivation process, and includes: the mobility management network element 102 serves to send a delete session request message to the packet data gateway, where the deletion session request message includes the LIPA connection 501. a default bearer identifier; the packet data gateway sends a delete session response message to the mobility management network element 102 through the serving gateway; the mobility management network element 102 sends a deactivation bearer request message to the H(e)NB; H(e)NB The UE sends a radio resource control reconfiguration message to enable the user equipment to release resources.

805: The mobility management network element 101 sends a handover request message to the H (e) NB 144;

The handover request message includes the received source-to-target transparent container and the radio access bearer list, and the The line access bearer list is constructed according to the received P匪 context, that is, when the first source to the target transparent container is received, the switch request message includes the first source to the target transparent container, according to the P匪 context, the wireless connection The inbound bearer list includes the radio access bearer information of the LIPAP匪 connection 501. When the second source to the target transparent container is received, the handover request message includes the second source-to-target transparent container, and the radio access bearer list does not include the LIPA P. The wireless access bearer information of the connection 501.

806: H(e)NB 144 sends a handover request response message to the mobility management network element 101;

807: The mobility management network element 101 sends a forwarding relocation response message to the mobility management network element 102;

808: The mobility management network element 102 sends a handover command message to the H(e)NB 145.

It can be seen that the mobility management network element 102 allows access to the target wireless access by determining that the source radio access network element H(e)NB 145 and the target radio access network element H(e)NB 144 are in the same local home network and user equipment 151. The CSG where the network element H(e)NB 144 is located and the APN of the LIPA P匪 connection 501 are allowed to access in the CSG where the H (e) NB 144 is located, thereby transmitting the wireless connection of the first source to the target transparent container and the LIPA P匪 connection 501. The bearer information is transmitted to the target radio access network element H(e)NB 144, and the target radio access network element H(e) NB144 creates a corresponding bearer for the LIPA PDN connection 501, and moves the LIPA PDN connection 501 from the H(e)NB 145 to H(e)NB144, which realizes the mobility of LIPA.

In the foregoing solution, when the user equipment establishes a SIPT0P connection, the method 1) may be used to determine whether the target radio access network element can retain the SIPTO P匪 connection of the user equipment; when the user equipment establishes the LIPA P匪 connection , can be judged by using schemes 1) to 3) It is determined whether the target radio access network element can retain the LIPA P匪 connection of the user equipment. The solution provided by the embodiment of the present invention does not involve the scenario where the user equipment simultaneously establishes the LIPA P匪 connection and the S IPTO PDN connection.

In summary, the processing switching method provided by the embodiment of the present invention receives the first source-to-target transparent container sent by the source radio access network element by using the source mobility management network element, where the first source-to-target transparent container includes the user equipment connection. The radio bearer information connected to the packet data network of the IP network, and the source mobility management network element sends the radio access bearer information of the first source to the target transparent container and the packet data network of the access IP network of the user equipment to the target wireless Accessing the network element, so that the radio bearer information included in the source-to-target transparent container received by the target radio access network element and the radio access bearer information included in the radio access bearer list are in one-to-one correspondence, and the local access IP network is successfully created. The bearer of the packet data network connection, realizes the mobility of LIPA and S IPT0. .

FIG. 10 is a schematic structural diagram of a mobility management network element according to another embodiment of the present invention, where the source mobility management network element corresponding to FIG. 5 and the corresponding mobility management network element 102 in FIG. 7, FIG. 8, and FIG. It can be implemented by the mobility management network element provided by this embodiment.

As shown in FIG. 10, the mobility management network element 900 provided in this embodiment includes a receiving module 901, a determining module 902, and a sending module 903. The receiving module 901 is configured to receive a first source-to-target transparent container sent by the source radio access network element, where the first source-to-target transparent container includes radio bearer information of a local access IP network packet data network connection of the user equipment; The determining module 902 is configured to determine whether the local access IP network packet data network connection of the user equipment is reserved in the target radio access network element; the sending module 903 is configured to send the first source to the target transparent container and the local device of the user equipment Accessing the radio access information of the IP network packet data network connection to the target radio access network element, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment; The module 902 determines that the local access IP network packet data network connection of the user equipment can be reserved by the target radio access network element, and the sending module 903 sends the first source-to-target transparent container and the local access IP of the user equipment. The wireless access bearer information of the network packet data network connection to the target radio access network element; the local connection of the user equipment IP network connected to the packet data network connection or LIPA P S IPTO P bandit bandit connection.

Further, the determining module 902 in this embodiment includes a first determining module 9021, and the first determining module 9021 is configured to determine whether the target radio access network element and the source radio access network element are in the same LHN; When the first determining module 9021 determines that the target radio access network element and the source radio access network element are in the same LHN, the determining module 902 determines that the local access IP network packet data network connection of the user equipment can be at the target. The radio access network element is reserved.

Further, when the user equipment is connected to the target radio access network, the judging module 902 in the embodiment further includes a second judging module 9022, where the second judging module 9022 is configured to determine whether the user equipment is permitted to access the target radio access network. When the first judging module 9021 determines that the target radio access network element and the source radio access network element are in the same LHN, and the second judging module 9022 determines that the user equipment is permitted to access the target radio access network. When the CSG is located, the determining module 902 determines that the LIPA P匪 connection of the user equipment can be reserved in the target radio access network element.

Further, when the user equipment is established with the LIPA P匪 connection, the determining module 902 in this embodiment further includes a third determining module 9023, where the third determining module 9023 is configured to determine whether the APN of the LIPA P匪 connected by the user equipment is Accessing the CSG where the target radio access network element is located; when the first judging module 9021 determines that the target radio access network element and the source radio access network element are in the same LHN, the second judging module 9022 determines that the user equipment is licensed. When the CSG in which the target radio access network element is located is located and the third determining module 9023 determines that the APN connected to the LIPA P匪 of the user equipment is permitted to access the CSG where the target radio access network element is located, the determining module 902 determines The L IPA P匪 connection out of the user equipment can be reserved in the target radio access network element.

The CSG where the target radio access network element is located is the same as the CSG where the source radio access network element is located, and the target radio access network element and the source radio access network element are in the same LHN and the user equipment is permitted to access the target radio access network. A special case of the CSG in which the meta is located. Therefore, the judging module 902 in this embodiment includes a fourth judging module 9024, and the fourth judging module 9024 is used when the user equipment is connected to the LIPAP port. Determining whether the target radio access network element and the source radio access network element are in the same CSG; when the fourth judging module 9024 determines that the target radio access network element and the source radio access network element are in the same CSG, the determining module 902 is It is determined that the LIPA P匪 connection of the user equipment can be reserved in the target radio access network element.

Further, the sending module 903 of the embodiment is further configured to send, by the first source to the target transparent container, the radio access bearer information of the local access IP network packet data network connected to the user equipment to the target wireless While accessing the network element, the wireless access bearer information of the other packet data network connection of the user equipment is sent to the target radio access network element, and the first source to the target transparent container further includes the radio bearer connected by the other packet data network of the user equipment. Information, where other packet data network connections do not include local access by user equipment

The IP network packet data network is connected, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment, and also establishes a bearer for other packet data network connections of the user equipment.

The mobility management network element 900 provided by the embodiment of the present invention can determine that the target radio access network element can retain the local access IP network packet data network connection of the user equipment, and then send the local access IP network packet data network including the user equipment. The source of the connected radio bearer information to the target transparent container and the radio access bearer information of the local access IP network packet data network of the user equipment to the target radio access network element, so that the source of the target radio access network element receives Corresponding to the radio bearer information contained in the target transparent container and the radio access bearer information included in the radio access bearer list, the bearer of the local access IP network packet data network connection is successfully created, and the mobility of LIPA and SIPT0 is realized.

FIG. 11 is a schematic structural diagram of a radio access network element according to another embodiment of the present invention, where the source radio access network element corresponding to FIG. 5 and the corresponding source radio access network element H in FIG. 7, FIG. 8 and FIG. (e) NB 145 As shown in FIG. 11, the radio access network element 1000 of the embodiment of the present invention includes: a sending module 1001, configured to send a first source-to-target transparent container to a mobility management network element, where the first source is The target transparent container includes radio bearer information of the local access IP network packet data network connection of the user equipment, so that the mobility management network element switches the local access IP network packet data network connection of the user equipment to the target radio access network element. ; The local access IP network packet data network connection of the user equipment is LIPA P匪 connection or SIPTO PDN connection.

Further, the sending module 1001 is further configured to: when sending the first source to the target transparent container to the mobility management network element, send the second source to the target transparent container to the mobility management network element, the second source to the target The transparent container includes radio bearer information of other packet data network connections of the user equipment, and does not include radio bearer information of the local access IP network packet data network connection of the user equipment, where the other packet data network connection does not include the local equipment of the user equipment. Access IP network packet data network connection for mobility The management network element can switch other packet data network connections of the user equipment to the target radio access network element. The radio access network element 1000 provided by the embodiment of the present invention sends a source to the target transparent container that includes the radio bearer information of the local access IP network packet data network of the user equipment, so that the mobility management network element localizes the user equipment. The access IP network packet data network connection is switched to the target radio access network element to realize the mobility of LIPA and S IPT0.

FIG. 12 is a schematic structural diagram of a system for processing handover according to another embodiment of the present invention. The system consisting of the corresponding H (e) NB 145 and the mobility management network element 102 in FIG. 7 , FIG. 8 and FIG. 9 may have a system. The system provided by the embodiment is implemented.

As shown in FIG. 12, the system for processing handover provided by this embodiment includes: a radio access network element 1 101 and a mobility management network element 11 02. The radio access network element 1101 is configured to send a first source-to-target transparent container, where the first source-to-target transparent container includes radio bearer information of a local access IP network packet data network connection of the user equipment; and a mobility management network element. 1102. The method is configured to receive the first source-to-target transparent container, and determine whether the local access IP network packet data network connection of the user equipment is reserved in the target radio access network element, if the local access IP network group of the user equipment The data network connection can be reserved in the target radio access network element, and the first source-to-target transparent container and the local access IP network packet data network connection of the user equipment are sent to the target radio access network. And the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment; the local access IP network packet data network connection of the user equipment is a LIPA PDN connection or an IPTO P匪 connection .

The mobility management network element 1 102 can determine whether the local access IP network packet data network connection of the user equipment is in the target wireless connection by determining whether the target radio access network element and the source radio access network element are in the same LHN. The incoming network element is reserved. Therefore, the mobility management network element 102 may be specifically configured to: receive the first source-to-target transparent container, and determine whether the target radio access network element and the source radio access network element are in the same LHN, if The target radio access network element and the source radio access network element send the radio access information of the first source to the target transparent container and the local access IP network packet data network of the user equipment to the same LHN to The target radio access network element, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment.

When the user equipment establishes an L IPA P匪 connection, the mobility management network element 1102 determines that the target is not available. Whether the line access network element and the source radio access network element are on the same LHN basis can determine the local access IP of the user equipment by determining whether the user equipment is allowed to access the CSG where the target radio access network element is located. The network packet data network connection can be reserved in the target radio access network element. Therefore, the mobility management network element 102 can be specifically configured to receive the first source-to-target transparent container, determine the target radio access network element, and the source wireless. Whether the access network element is in the same LHN, and determines whether the user equipment is allowed to access the CSG where the target radio access network element is located, if the target radio access network element and the source radio access network element are in the same LHN and The user equipment is permitted to access the CSG where the target radio access network element is located, and send the first source to the target transparent container and the radio access bearer information of the local access IP network packet data network of the user equipment to the target wireless Accessing the network element, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment.

When the user equipment is established with the LIPA P匪 connection, the mobility management network element 1102 determines whether the target radio access network element and the source radio access network element are in the same LHN and determines whether the user equipment grants access to the target radio access. On the basis of the CSG on which the network element is located, it is determined whether the APN connected to the LIPA P匪 of the user equipment is permitted to access the CSG where the target radio access network element is located to determine the local access IP network packet data network connection of the user equipment. Whether the target radio access network element can be reserved, and the mobility management network element can be specifically configured to receive the first source-to-target transparent container, and determine whether the target radio access network element and the source radio access network element are In the same LHN, determining whether the user equipment is allowed to access the CSG where the target radio access network element is located, and determining whether the APN connected to the LIPA P is permitted to access the CSG where the target radio access network element is located, if the target The radio access network element and the source radio access network element are in the same LHN, the user equipment is allowed to access the CSG where the target radio access network element is located, and the LIPA P is connected. The APN is allowed to access the CSG where the target radio access network element is located, and sends the first source to the target transparent container and the radio access bearer information of the local access IP network packet data network of the user equipment to the target wireless. Accessing the network element, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment.

The CSG where the target radio access network element is located is the same as the CSG where the source radio access network element is located, and the target radio access network element and the source radio access network element are in the same LHN and the user equipment is permitted to access the target radio access network. a special case of the CSG where the meta is located, so for this special case, when the user equipment is established When there is a LIPA P匪 connection, the mobility management network element 1102 in this embodiment may be specifically configured to receive the first source-to-target transparent container, and determine whether the target radio access network element and the source radio access network element are the same. The CSG, if the target radio access network element and the source radio access network element are in the same CSG, send the first source to the target transparent container and the local access IP network packet data network connection of the user equipment The information is loaded into the target radio access network element, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment.

In order to enable the radio access network element to switch the other packet data network connection of the user equipment while switching the local access IP network packet data network connection of the user equipment, the mobility management network element 1102 is further configured to send the first Transmitting the wireless access bearer information of the source-to-target transparent container and the local access IP network packet data network of the user equipment to the target radio access network element, and transmitting the radio access of the other packet data network connection of the user equipment Carrying information to the target radio access network element, the first source-to-target transparent container further includes radio bearer information of other packet data network connections of the user equipment, where the other packet data network connection does not include the local area of the user equipment Access IP network packet data network connection.

The system provided by the embodiment of the present invention creates a first source-to-target transparent container by using a radio access network element, and determines, by using the mobility management network element, that the target radio access network element can retain the local access IP network packet data network of the user equipment. Connecting, and further transmitting, the source-to-target transparent container including the radio bearer information of the local access IP network packet data network connection of the user equipment, and the local access IP network packet data network connection connection of the user equipment to the target wireless Accessing the network element, so that the radio bearer information included in the source-to-target transparent container received by the target radio access network element and the radio access bearer information included in the radio access bearer list are correspondingly, and the local access IP network is successfully created. The bearer of the packet data network connection realizes the mobility of LIPA and SIPT0.

It will be understood by those of ordinary skill in the art that the drawings are only a schematic representation of one embodiment, and the modules or processes in the drawings are not necessarily required to practice the invention.

A person skilled in the art can understand that the modules in the mobility management network element in the embodiment can be distributed in the mobility management network element of the embodiment according to the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

One of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments may be The foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiment; and the foregoing storage medium includes: R0M, RAM , a variety of media that can store program code, such as a disk or an optical disk.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced by the equivalents of the technical solutions of the embodiments of the present invention.

Claims

Claim

A method for processing handover, characterized in that it comprises:

The mobility management network element determines that the local access IP network packet data network connection of the user equipment can send the first source to the target transparent container and the local device of the user equipment when the target radio access network element remains Accessing the radio access bearer information of the IP network packet data network connection to the target radio access network element, so that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment ;

The local access IP network packet data network connection of the user equipment is a local IP access packet data network (LIPA PDN) connection or an IP data flow packet data network (SIPTO PDN) connection.

2. The method of claim 1 wherein:

The mobility management network element determines that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element: the mobility management network element determines the target radio access network element And the source radio access network element is in the same local home network (LHN).

3. The method of claim 2, wherein

The mobility management network element determines that the target radio access network element and the source radio access network element are in the same LHN, specifically: the mobility management network element determines the locality of the target radio access network element The home network identity (LHN ID) is the same as the LHN ID of the source radio access network element.

The method according to claim 2, wherein when the local access IP network packet data network connection of the user equipment is a LIP A PDN connection,

The mobility management network element determines that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, including: the mobility management network element determining that the user equipment grants access to the access point The closed subscriber group (CSG) where the target radio access network element is located.

5. The method of claim 4, wherein

The mobility management network element determines that the user equipment grants access to the target radio access network element The CSG includes: the mobility management network element determining that the closed subscriber group identifier (CSG ID) of the target radio access network element is in an allowed CSG List of the user equipment.

The method according to claim 4, wherein when the local access IP network packet data network connection of the user equipment is a LIP A PDN connection,

The mobility management network element determines that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, and includes: the mobility management network element determines the access of the LIPA PDN connection. The point name (APN) is granted access to the CSG where the target radio access network element is located.

7. The method of claim 6 wherein:

Determining, by the mobility management network element, that the APN connected to the LIPA PDN is allowed to access the CSG where the target radio access network element is located, the method includes: the mobility management network element determining that the APN connected to the LIPA PDN is in the target The access point name list (APN List) corresponding to the CSG where the radio access network element is located.

8. The method according to claim 1, wherein when the local access IP network packet data network connection of the user equipment is a LIPA PDN connection,

The mobility management network element determines that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, and the method includes: the mobility management network element determining the target radio access network element And the source radio access network element is in the same CSG.

9. The method of claim 8 wherein:

Determining, by the mobility management network element, that the target radio access network element and the source radio access network element are in the same CSG, the method includes: the mobility management network element determining a CSG ID of the target radio access network element The source radio access network element has the same CSG ID.

The method according to any one of claims 1-9, wherein the method further comprises: transmitting, by the source mobility management network element, the first source to target transparent container and the user equipment While the local access IP network packet data network is connected to the radio access bearer information to the target radio access network element, the source mobility management network element sends the radio access of the other packet data network connection of the user equipment. And carrying the information to the target radio access network element, where the first source-to-target transparent container further includes radio bearer information of other packet data network connections of the user equipment, where the other packet data network connection The local access IP network packet data network connection of the user equipment is not included.

The method according to any one of claims 1-9, wherein the source mobility management network element sends the first source-to-target transparent container and the local access IP network packet data of the user equipment. The wireless access bearer information of the network connection to the target radio access network element includes: sending the first source to the target transparent container and the radio access bearer connected by the local access IP network packet data network of the user equipment Information

If the target mobility management network element selects a new serving gateway for the local access IP network packet data network connection of the user equipment, the local access IP network packet data network connection wireless access bearer of the user equipment The information contains the tunnel identity assigned by the new service gateway.

The method according to any one of claims 1 to 10, wherein the method further comprises: the source mobility management network element receiving the second source-to-target transparent container sent by the source radio access network element, The second source-to-target transparent container includes radio bearer information of other packet data network connections of the user equipment, and does not include radio bearer information of the local access IP network packet data network connection of the user equipment; if the user equipment is locally connected The IP network packet data network connection cannot be reserved in the target radio access network element, and the second source to the target transparent container and the other packet data network connection radio access bearer information of the user equipment are sent to the target. Radio accessing the network element, so that the target radio access network element establishes a bearer for other packet data network connections of the user equipment, and the other packet data network connection does not include the local access IP network packet data of the user equipment. Network connection.

The method according to claim 12, wherein the method further comprises: transmitting, at the second source to the target transparent container, the bearer information of the other packet data network connection of the user equipment to the Before the target radio access network element, the source mobility management network element deactivates the local access IP network packet data network connection of the user equipment.

14. A mobility management network element, comprising:

a receiving module, configured to receive a first source-to-target transparent container sent by the source radio access network element, where the first source-to-target transparent container includes radio bearer information of a local access IP network packet data network connection of the user equipment; a determining module, configured to determine that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element;

a sending module, configured to send the first source-to-target transparent container and the radio access bearer information of the local access IP network packet data network connection of the user equipment to the target radio access network element, so that the target The radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment;

When the determining module determines that the local access IP network packet data network connection of the user equipment can be reserved by the target radio access network element, the sending module sends the first source to target transparent container and the The local access IP network of the user equipment is connected to the radio access bearer information of the packet data network to the target radio access network element;

15. The mobility management network element of claim 14 wherein:

The determining module includes a first determining module, where the first determining module is configured to determine that the target wireless access network element and the source radio access network element are in the same LHN;

The determining module determines that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, and includes: the first determining module determines the target radio access network element And the source radio access network element is in the same LHN.

The mobility management network element according to claim 15, wherein when the local access IP network packet data network connection of the user equipment is a LIPA PDN connection,

The determining module further includes a second determining module, where the second determining module is configured to determine that the user equipment is permitted to access the CSG where the target radio access network element is located;

The determining module determines that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, and further includes: the second determining module determines that the user equipment is permitted to access The CSG where the target radio access network element is located.

The mobility management network element according to claim 16, wherein when the local access IP network packet data network connection of the user equipment is a LIPA PDN connection, The determining module further includes a third determining module, where the third determining module is configured to determine that the APN connected to the LIPA PDN is permitted to access the CSG where the target radio access network element is located;

The determining module determines that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, and further includes: the third determining module determines the APN of the LIPA PDN connection It is allowed to access the CSG where the target radio access network element is located.

18. The mobility management network element according to claim 14, wherein when the local access IP network packet data network connection of the user equipment is a LIPA PDN connection,

The determining module includes a fourth determining module, where the fourth determining module is configured to determine that the target wireless access network element and the source radio access network element are in the same CSG;

The determining module determines that the local access IP network packet data network connection of the user equipment can be reserved in the target radio access network element, and includes: the fourth module determines the target radio access network element and The source radio access network elements are in the same CSG.

19. The mobility management network element of any of claims 14-18, wherein:

The sending module is further configured to: send the radio access bearer information of the first source-to-target transparent container and the local access IP network packet data network connection of the user equipment to the target radio access network element Simultaneously, the radio access bearer information of the other packet data network connection of the user equipment is sent to the target radio access network element, where the first source-to-target transparent container further includes another packet data network connection of the user equipment. Radio bearer information, wherein the other packet data network connection does not include a local access IP network packet data network connection of the user equipment.

20. A radio access network element, comprising:

a sending module, configured to send a first source-to-target transparent container to the mobility management network element, where the first source-to-target transparent container includes radio bearer information of a local access IP network packet data network connection of the user equipment, so that The mobility management network element switches the local access IP network packet data network connection of the user equipment to the target radio access network element;

21. The radio access network element of claim 20, wherein: The sending module is further configured to: send the second source to the target transparent container to the mobility management network element, while sending the first source to the target transparent container to the mobility management network element, the second The source-to-target transparent container includes radio bearer information of other packet data network connections of the user equipment, and does not include radio bearer information of the local access IP network packet data network connection of the user equipment, and the other packet data network connection is not A local access IP network packet data network connection including the user equipment.

22. A system for processing handover, characterized by comprising:

a radio access network element, configured to send a first source to a target transparent container, where the first source to target transparent container includes radio bearer information of a local access IP network packet data network connection of the user equipment;

a mobility management network element, configured to receive the first source-to-target transparent container, and determine that the local access IP network packet data network connection of the user equipment can send the first when the target radio access network element remains a source-to-target transparent container and a radio access bearer information of a local access IP network packet data network connection of the user equipment to the target radio access network element, so that the target radio access network element is the user equipment Local access IP network packet data network connection establishment bearer;

23. The system of claim 22, wherein

The mobility management network element is specifically configured to receive the first source-to-target transparent container, and determine that the target radio access network element and the source radio access network element are in the same LHN, and send the a source-to-target transparent container and a radio access bearer information of a local access IP network packet data network connection of the user equipment to the target radio access network element, so that the target radio access network element is the user The device's local access IP network packet data network connection establishes a bearer.

The system according to claim 23, wherein when the local access IP network packet data network connection of the user equipment is a LIP A PDN connection,

The mobility management network element is specifically configured to receive the first source-to-target transparent container, and determine that the target radio access network element and the source radio access network element are in the same LHN and the user equipment is licensed. Transmitting the radio access bearer information of the first source to the target transparent container and the local access IP network packet data network of the user equipment to the destination when accessing the CSG where the target radio access network element is located The radio access network element is configured such that the target radio access network element establishes a bearer for the local access IP network packet data network connection of the user equipment.

The system according to claim 24, wherein when the local access IP network packet data network connection of the user equipment is a LIP A PDN connection,

The mobility management network element is specifically configured to receive the first source-to-target transparent container, and determine that the target radio access network element and the source radio access network element are in the same LHN, and the user equipment is licensed. Transmitting the first source to the target transparent container and the device when accessing the CSG where the target radio access network element is located and the port of the LIPA PDN connection is permitted to access the CSG where the target radio access network element is located Local access IP network packet data network connection radio access bearer information of the user equipment to the target radio access network element, so that the target radio access network element is a local access IP network grouping of the user equipment The data network connection establishes a bearer.

The system according to claim 22, wherein when the local access IP network packet data network connection of the user equipment is a LIPA PDN connection,

The mobility management network element is configured to receive the first source-to-target transparent container, and determine that the target radio access network element and the source radio access network element are in the same CSG, and send the a source-to-target transparent container and a radio access bearer information of a local access IP network packet data network connection of the user equipment to the target radio access network element, so that the target radio access network element is the user The device's local access IP network packet data network connection establishes a bearer.

27. A system according to any of claims 22-26, characterized in that

The mobility management network element is further configured to: send, by the first source to the target transparent container, the radio access bearer information of the local access IP network packet data network connection of the user equipment to the target wireless Transmitting, by the user equipment, the radio access bearer information of the other packet data network connection of the user equipment to the target radio access network element, where the first source-to-target transparent container further includes the user equipment Radio bearer information of other packet data network connections, wherein the other packet data network connection does not include a local access IP network packet data network connection of the user equipment.