CN105009673A

CN105009673A - Method and device for judging service continuity

Info

Publication number: CN105009673A
Application number: CN201380034764.6A
Authority: CN
Inventors: 熊春山; 魏鑫鹏; 时晓岩
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-12-30
Filing date: 2013-12-30
Publication date: 2015-10-28
Anticipated expiration: 2033-12-30
Also published as: CN110430607B; WO2015100553A1; CN105009673B; CN110430607A

Abstract

Disclosed in the embodiment of the present invention is a method and device for processing service continuity; an MME, by means of acquiring the service continuity information of a PDN connection of a UE, and on the basis of said service continuity information of the PDN connection, determines whether the PDN connection needs to maintain service continuity; if the PDN connection does not need to maintain service continuity, then the MME selects a new packet data gateway PGW for the UE, and if the PDN connection needs to maintain service continuity, then the MME maintains the original PGW connection. The present invention can ensure the normal service connection of a UE needing to maintain service continuity, and on the premise of not influencing the service connectivity of the service of a PDN connection, can select a more suitable PGW for a UE not needing to maintain service continuity, optimising the UE path and saving routing resources.

Description

Method and device for judging service continuity

Business continuance determination methods and equipment

Technical field

The present invention relates to the communication technology, more particularly to a kind of business continuance determination methods and equipment.Background technology

Business continuance in a network（Service continuity) refer to the characteristic for ensureing that ongoing Network is not interrupted, the continuity for especially ensureing business in a mobile network is a key property of network.The continuity of Network can be realized in several ways, for example, can be ensured by the related mechanism of application layer, can also pass through Internet such as Internet protocol（Internet Protocol, abbreviation IP) mechanism of layer ensures.The continuity of some business is exactly by ensureing user equipment（User Equipment, abbreviation UE) IP address keep constant during whole service conversation and realize.In order to ensure that UE IP address does not change, it is desirable to which its used IP address anchor point does not change under any states of UE, and IP address anchor point herein typically refers to some of network gateway, such as third generation cooperative partner program（The 3rd Generation Partnership Project, abbreviation 3GPP) packet data gateway in network（PDN Gateway, abbreviation PGW).

In existing 3GPP networks, in order to ensure in the continuity of user network business, prior art one, network can select a PGW to be connected to specific packet data network for UE（Packet Data Network, abbreviation PDN), though afterwards UE how to move can all allow before UE uses used in PGW connect PDN networks, no matter namely how UE moves the PGW used before its network service flow can be all first routed to, then enters PDN networks by the PGW.For example, the UE starts to be located at Beijing, and network have selected positioned at Pekinese PGW for it when UE is initially connected to certain PDN network;UE is moved to Guangzhou afterwards, is now located at Pekinese PGW to ensure that the continuity network of UE business still can allow UE to use, rather than selection is linked into PDN networks positioned at some PGW in Guangzhou.Business not all on UE is required for keeping business continuance in fact, and when on some PDN connection UE do not need keep business continuance business in the presence of, also just It is not necessary on the PDN connection for UE keep business continuance.UE for being not necessarily to keep business continuance, if network is still used PGW before its selection, so when UE moves to an off original PGW distant locations, its Business Stream between PDN networks will be by very long transmission path, and this can make Wasted into very big route resource.

A kind of selected IP flows unloading of new network mechanism is introduced in the problem of in order to solve to route the wasting of resources in prior art one, 3GPP networks（Selected IP Traffic Offload, abbreviation SIPTO).SIPTO basic thought is that, for the connection between UE and some PDN networks, network can select the Business Stream between the PGW nearer from UE positions, such UE and PDN networks just to be transmitted by a shorter path for UE.But SIPTO merely provides a kind of method for reducing Business Stream transmission path, this method is it is not intended that the continuity characteristic of Business Stream, as long as user is specified in the signing information of user and operator can use SIPTO mechanism when accessing some PDN network, so user is in moving process, network can think that user selects a PGW nearer apart from user, PGW change can cause UE IP addresses to change, if the business that now IP address in need does not change before UE is present, it will be so interrupted using the business before user after SIPTO.The content of the invention

The embodiment of the present invention provides a kind of business continuance determination methods and equipment, it ensure that the business for the UE for needing to keep business continuance is normally continuous, and can be to be not necessary to guaranty that the PGW that the UE selections of business continuance are more suitable for so that UE path is more excellent.

First aspect present invention provides a kind of processing method of business continuance, including：

Mobility management entity MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE)；

When trigger condition is met, the MME determines whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；

If it is not, then the MME is that the UE selects new packet data gateway PGW, and indicate that the UE disconnects the connection with being the former PGW that the UE is serviced, and indicate that the UE sets up new PDN with the new PGW and is connected；

If so, then the MME keeps the UE and former PGW connection.

In the first possible implementation of first aspect present invention, the mobility management entity MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE), including：

The MME receives the business continuance information for the PDN connections that the network equipment is sent, wherein, the business continuance information of the PDN connections is by the network equipment according to the PDN connections The continuity information of each business of upper carrying is determined.

In second of possible implementation of first aspect present invention, the network equipment is policy control Rulemaking entity PCRF, the former PGW, be the UE services gateway S-GW in any one.

In the third possible implementation of first aspect present invention, when the network equipment is the PCRF, and the agreement between the former PGW and the S-GW be general packet radio service technology tunnel label GTP agreements when, the MME receives the business continuance information for the PDN connections that the network equipment is sent, including：

The MME receives business continuance information of the PCRF by the former PGW and S-GW PDN connections sent.

In the 4th kind of possible implementation of first aspect present invention, when the network equipment is the PCRF, and the agreement between the former PGW and the S-GW be the 6th edition PMIPv6 agreement of proxy mobile internet protocol when, the MME receives the business continuance information for the PDN connections that the network equipment is sent, including：

The MME receives the business continuance information that the PCRF passes through the S-GW PDN connections sent.

In the 5th kind of possible implementation of first aspect present invention, when the network equipment is the former PGW, the MME receives the business continuance information for the PDN connections that the network equipment is sent, including：

The MME receives the business continuance information that the former PGW passes through the SGW PDN connections sent.

In the 6th kind of possible implementation of first aspect present invention, when the network equipment is the S-GW of the UE services, the MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE), including：

The MME receives the business continuance information for the PDN connections that the S-GW is sent.In the 7th kind of possible implementation of first aspect present invention, the mobility management entity MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE), including：

The MME obtains the continuity information of each carrying in the PDN connections, and the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections. In the 8th kind of possible implementation of first aspect present invention, the MME obtains the continuity information of each carrying in the PDN connections, the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections, including：

The MME obtains the continuity information of each carrying in the PDN connections, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, the MME determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, the MME determines the business continuance of the PDN to keep continuous.

In the 9th kind of possible implementation of first aspect present invention, the MME obtains the continuity information of each carrying in the PDN connections, the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections, including：

If any one carrying in the PDN connections needs to keep continuous, the MME determines whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, the MME determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, then the MME determines the business continuance of the PDN to keep continuous.

With reference to first aspect present invention and first aspect the first to the 9th kind of possible implementation, in the tenth kind of possible implementation of first aspect present invention, the MME obtains the continuity information of each carrying in the PDN connections, including：

The MME is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of the UE services are sent.

With reference to first aspect present invention and first aspect the first to the tenth kind of possible realization side Formula, in a kind of the tenth possible implementation of first aspect present invention, the trigger condition is any one in following condition：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

With reference to first aspect present invention and first aspect the first to a kind of the tenth possible implementation, in the 12nd kind of possible implementation of first aspect present invention, the MME is that the UE selects new packet data gateway PGW, including：

The MME obtains the corresponding each PGW of affiliated access points APN of former PDN connections relevant information, wherein, the corresponding each PGW of APN relevant information includes：Each PGW and UE range information, each PGW and UE Delay, the load information of each PGW；

The MME is that the UE selects new PGW from each PGW according to the corresponding each PGW of APN relevant information and the actual demand of the UE.

In the 13rd kind of possible implementation of first aspect present invention, the MME obtains the range information of the corresponding each PGW of access points APN and the UE belonging to the former PDN connections, including：

The MME sends DNS query request to domain name system server DNS, for inquiring about the corresponding each PGW information of the APN;

The MME receives the internet protocol address for each PGW that the DNS is sent, and the MME determines each PGW and the UE distance according to the IP address of each PGW.

In the 14th kind of possible implementation of first aspect present invention, the MME obtains the relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections, including：The MME inquires about the relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections from pre-configured database.

In the 15th kind of possible implementation of first aspect present invention, the MME is described

UE selects new packet data gateway PGW, including：

The MME determines the need for selecting new PGW for the UE according to second operator's selection strategy.

In the 16th kind of possible implementation of first aspect present invention, second operator selection strategy is：When the PDN connections of the UE are in EPS Connection Management Idle state ECM-IDLE When, new PGW is selected for the UE, or, all it need not select new PGW for the UE when the PDN connections of the UE are under any state, or, select new PGW when the PDN connections of the UE need not keep business continuance for the UE.

Second aspect of the present invention provides a kind of processing method of business continuance, including：

The network equipment obtains the business continuance information of each business carried in PDN connections；The business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections；

The network equipment sends the business continuance of the PDN connections to mobile management entity MME

^ I Ft from Θ,.

In the first possible implementation of second aspect of the present invention, the business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections, including：

The network equipment judges whether each business is required for keeping connecting according to the business continuance information of each business carried in the PDN connections；

If any one business in each business carried in the PDN connections needs to keep continuous, the network equipment determines the business continuance of the PDN connections to need to keep continuous；

If all business carried in the PDN connections need not all keep continuous, the network equipment determines the business continuance of the PDN connections to keep continuous.

In second of possible implementation of second aspect of the present invention, the business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections, including：

The network equipment judges whether each business is required for keeping continuous according to the business continuance information of each business carried in the PDN connections；

If any one business in each business carried in the PDN connections needs to keep continuous, the network equipment determines whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, the network equipment determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, then the network equipment determines the business continuance of the PDN not needing Keep continuous.

With reference to the first and second possible implementation of second aspect of the present invention and second aspect, in the third possible implementation of second aspect of the present invention, the network equipment is policy control Rulemaking entity PCRF, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The PCRF receives the Business Stream characteristic information for each business that bag detection entity TDF is sent；The PCRF determines the business continuance of each business according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.

In the 4th kind of possible implementation of second aspect of the present invention, the Business Stream characteristic information of each business includes：The five-tuple information of the business or the application layer message of the business.

With reference to the third and the 4th kind of possible implementation of second aspect of the present invention, in the 5th kind of possible implementation of second aspect of the present invention, the PCRF determines the business continuance of each business according to the Business Stream characteristic information of each business, including：

The PCRF is according to the Business Stream characteristic information of each business, and prestores or the business continuance characteristic information of miscellaneous service type that is obtained from external data base determines the business continuance of each business.

With reference to the first and second possible implementation of second aspect of the present invention and second aspect, in the 6th kind of possible implementation of second aspect of the present invention, the network equipment is policy control Rulemaking entity PCRF, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The PCRF receives the business continuance information for each business that bag detection entity TDF is sent, wherein, the business continuance information of each business is what the TDF was determined according to the Business Stream characteristic information of each business.

With reference to second aspect of the present invention and second aspect the first to the 6th kind of possible implementation, in the 7th kind of possible implementation of second aspect of the present invention, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the packet data gateway PGW and gateway S-GW of UE service is packet radio service technology tunnel label GTP agreements；

The network equipment sends the business continuance information of the PDN connections to mobile management entity MME, including：

The PCRF sends the PDN by the PGW and S-GW to the MME The business continuance information of connection.

With reference to second aspect of the present invention and second aspect the first to the 6th kind of possible implementation, in the 8th kind of possible implementation of second aspect of the present invention, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the PGW and the S-GW of UE service is the 6th edition PMIPv6 agreement of proxy mobile internet protocol；

The PCRF sends the business continuance information of the PDN connections by the S-GW to the MME.

With reference to the first and second possible implementation of second aspect of the present invention and second aspect, in the 9th kind of possible implementation of second aspect of the present invention, the network equipment is the PGW of the UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The PGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The PGW sends the business continuance information of the PDN connections by the SGW serviced for the UE to the MME.

With reference to the first and second possible implementation of second aspect of the present invention and second aspect, in the tenth kind of possible implementation of second aspect of the present invention, the network equipment is the PGW of the UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

When there is new business to initiate in the PDN connections or at the end of, the PGW obtains the Business Stream characteristic information of each business；

The PGW determines the business continuance of each business according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.

With reference to the first and second possible implementation of second aspect of the present invention and second aspect, in a kind of the tenth possible implementation of second aspect of the present invention, the network equipment for The SGW of the UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The SGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business.

In the 12nd kind of possible implementation of second aspect of the present invention, the network equipment is the SGW of the UE services, and the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The SGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections, including：

The SGW determines the continuity of each carrying in the PDN connections according to the business continuance information of each business carried in the PDN connections；

The SGW judges whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, the SGW determines the business continuance of the PDN connections to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, the SGW determines the business continuance of the PDN connections to keep continuous.

In the 13rd kind of possible implementation of second aspect of the present invention, the network equipment is the SGW of the UE services, and the network equipment obtains the business continuance information of each business carried in PDN connections, including：

SGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The SGW is determined according to the business continuance information of each business carried in the PDN connections The continuity of each carrying in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, the SGW determines whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, the SGW determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, then the SGW determines the business continuance of the PDN to keep continuous.

In the 14th kind of possible implementation of second aspect of the present invention, the network equipment sends the business continuance information of the PDN connections to mobile management entity MME, including：

The network equipment determines that the business continuance of the PDN connections changes, and the network equipment sends the business continuance information of the PDN connections to the MME.

In the 15th kind of possible implementation of second aspect of the present invention, if PDN connections are just set up, the network equipment sends the business continuance information of the PDN connections to mobile management entity MME, including：

The network equipment sends the business continuance information of the PDN connections to the MME after preset duration.

Third aspect present invention provides a kind of mobile management entity MME, including：

Acquisition module 12, the business continuance information of the packet data network PDN connections for obtaining user equipment (UE)；

Determining module, for when trigger condition is met, determining whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；

Gateway selecting module, for the judged result in the determining module for when being, new packet data gateway PGW is selected for the UE, and indicates that the UE disconnects the connection with the former PGW for UE services, and indicates that the UE sets up new PDN with the new PGW and is connected；

Connection keeps module, for when the judged result of the determining module is no, keeping the UE and former PGW connection.

In the first possible implementation of third aspect present invention, the acquisition module specifically for：The business continuance information for the PDN connections that the network equipment is sent is received, wherein, it is described The business continuance information of PDN connections is determined by the network equipment according to the continuity information of each business carried in the PDN connections.

In second of possible implementation of third aspect present invention, the network equipment is policy control Rulemaking entity PCRF, the former PGW, be the UE services gateway S-GW in any one.

In the third possible implementation of third aspect present invention, when the network equipment is the PCRF, and the agreement between the former PGW and the S-GW be general packet radio service technology tunnel label GTP agreements when, the acquisition module specifically for：

Receive business continuance information of the PCRF by the former PGW and S-GW PDN connections sent.

In the 4th kind of possible implementation of third aspect present invention, when the network equipment is the PCRF, and the agreement between the former PGW and the S-GW be the 6th edition PMIPv6 agreement of proxy mobile internet protocol when, the acquisition module specifically for：

Receive business continuance information of the PCRF by the S-GW PDN connections sent.

In the 5th kind of possible implementation of third aspect present invention, when the network equipment be the former PGW when, the acquisition module specifically for：

Receive business continuances of the former PGW by the SGW PDN connections sent

^ I Ft from Θ,.

In the 6th kind of possible implementation of third aspect present invention, when the network equipment is the S-GW of UE service, the acquisition module specifically for：

Receive the business continuance information for the PDN connections that the S-GW is sent.

In the 7th kind of possible implementation of third aspect present invention, the determining module specifically for：

The continuity information of each carrying in the PDN connections is obtained, the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections.

In the 8th kind of possible implementation of third aspect present invention, the determining module specifically for：

The continuity information of each carrying in the PDN connections is obtained, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections； If any one carrying in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN is to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, it is determined that the business continuance of the PDN is that need not keep continuous.

In the 9th kind of possible implementation of third aspect present invention, the determining module specifically for：

The continuity information of each carrying in the PDN connections is obtained, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, determine whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, it is determined that the business continuance of the PDN is that need not keep continuous.

With reference to third aspect present invention and the third aspect the first to the 9th kind of possible implementation, in the tenth kind of possible implementation of third aspect present invention, the determining module specifically for：

It is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of the UE services are sent.

With reference to third aspect present invention and the third aspect the first to the tenth kind of possible implementation, in a kind of the tenth possible implementation of third aspect present invention, the trigger condition be following condition in any one：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

With reference to third aspect present invention and the third aspect the first to a kind of the tenth possible implementation, in the 12nd kind of possible implementation of third aspect present invention, the gateway selecting module includes：

Acquiring unit, the relevant information for obtaining the corresponding each PGW of access points APN belonging to the former PDN connections, wherein, the corresponding each PGW of APN relevant information includes：Each PGW and UE range information, each PGW and UE Delay, The load information of each PGW；

Determining unit, is that the UE selects new PGW from each PGW for the relevant information according to the corresponding each PGW of the APN and the actual demand of the UE.

In the 13rd kind of possible implementation of third aspect present invention, the acquiring unit specifically for：

DNS query request is sent to domain name system server DNS, for inquiring about the corresponding each PGW information of the APN；

The internet protocol address for each PGW that the DNS is sent is received, each PGW and the UE distance are determined according to the IP address of each PGW.

In the 14th kind of possible implementation of third aspect present invention, the acquiring unit specifically for：

The relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections is inquired about from pre-configured database.

In the 15th kind of possible implementation of third aspect present invention, the gateway selecting module specifically for：

Determined the need for selecting new PGW for the UE according to second operator's selection strategy.In the 16th kind of possible implementation of third aspect present invention, second operator selection strategy is：When the PDN connections of the UE are in EPS Connection Management Idle state ECM-IDLE states, new PGW is selected for the UE, or, all new PGW need not be selected when the PDN connections of the UE are under any state for the UE, or, select new PGW when the PDN connections of the UE need not keep business continuance for the UE.

Fourth aspect present invention provides a kind of network equipment, it is characterised in that including：

First acquisition module, the business continuance information of each business carried for obtaining in PDN connections；

Second acquisition module, the business continuance information for PDN connections described in the business continuance acquisition of information according to each business carried in the PDN connections；

Sending module, the business continuance information for sending the PDN connections to mobile management entity MME.

In the first possible implementation of fourth aspect present invention, second acquisition module specifically for： According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping connecting；

If any one business in each business carried in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN connections keeps continuous for needs；

If all business carried in the PDN connections need not all keep continuous, it is determined that the business continuance of the PDN connections is that need not keep continuous.

In second of possible implementation of fourth aspect present invention, second acquisition module specifically for：

According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping continuous；

If any one business in each business carried in the PDN connections needs to keep continuous, determine whether the PDN connections meet first operator's selection strategy；

With reference to the first and second possible implementation of fourth aspect present invention and fourth aspect, in the third possible implementation of fourth aspect present invention, the network equipment is policy control Rulemaking entity PCRF, and first acquisition module includes：

Receiving unit, the Business Stream characteristic information for receiving each business that bag detection entity TDF is sent；

Determining unit, the business continuance for determining each business according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.

In the 4th kind of possible implementation of fourth aspect present invention, the Business Stream characteristic information of each business includes：The five-tuple information of the business or the application layer message of the business.

With reference to the third and the 4th kind of possible implementation of fourth aspect present invention, in the 5th kind of possible implementation of fourth aspect present invention, the determining unit specifically for：

According to the Business Stream characteristic information of each business, and prestore or the business continuance characteristic information of miscellaneous service type that is obtained from external data base determines the business continuity of each business Property.

With reference to the first and second possible implementation of fourth aspect present invention and fourth aspect, in the 6th kind of possible implementation of fourth aspect present invention, the network equipment be policy control Rulemaking entity PCRF, first acquisition module specifically for：

The business continuance information for each business that bag detection entity TDF is sent is received, wherein, the business continuance information of each business is what the TDF was determined according to the Business Stream characteristic information of each business.

With reference to fourth aspect present invention and fourth aspect the first to the 6th kind of possible implementation, in the 7th kind of possible implementation of fourth aspect present invention, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the packet data gateway PGW and gateway S-GW of UE service is packet radio service technology tunnel label GTP agreements；

The sending module specifically for：The business continuance information of the PDN connections is sent to the MME by the PGW and S-GW.

With reference to fourth aspect present invention and fourth aspect the first to the 6th kind of possible implementation, in the 8th kind of possible implementation of fourth aspect present invention, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the PGW and the S-GW of UE service is the 6th edition PMIPv6 agreement of proxy mobile internet protocol；

The sending module specifically for：The business continuance information of the PDN connections is sent to the MME by the S-GW.

With reference to the first and second possible implementation of fourth aspect present invention and fourth aspect, in the 9th kind of possible implementation of fourth aspect present invention, the network equipment is the PGW of UE service, second acquisition module specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The sending module specifically for：The business continuance information of the PDN connections is sent to the MME by the SGW serviced for the UE.

With reference to the first and second possible implementation of fourth aspect present invention and fourth aspect, in the tenth kind of possible implementation of fourth aspect present invention, the network equipment is the PGW of UE service, first acquisition module specifically for： When there is new business to initiate in the PDN connections or at the end of, obtain the Business Stream characteristic information of each business；

The business continuance of each business is determined according to the Business Stream characteristic information of each business, the business continuance information of each business is obtained.

With reference to the first and second possible implementation of fourth aspect present invention and fourth aspect, in a kind of the tenth possible implementation of fourth aspect present invention, the network equipment is the SGW of UE service, first acquisition module specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business.

In the 12nd kind of possible implementation of fourth aspect present invention, the network equipment is the SGW of UE service, first acquisition module specifically for：

Second acquisition module includes：

Carry continuity determining unit, the continuity for determining each carrying in the PDN connections according to the business continuance information of each business carried in the PDN connections；

Judging unit, for judging whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；

The continuity determining unit of PDN connections, for determining whether the PDN connections need to keep continuous according to the judged result of the judging unit；

If any one carrying in the PDN connections needs to keep continuous, the continuity determining unit of the PDN connections determines the business continuance of the PDN connections to need to keep continuous；If all carryings need not all keep continuous in the PDN connections, the continuity determining unit of the PDN connections determines the business continuance of the PDN connections to keep continuous.

In the 13rd kind of possible implementation of fourth aspect present invention, the network equipment is the SGW of UE service, first acquisition module specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is by the PCRF according to institute The Business Stream characteristic information for stating each business is determined；

Second acquisition module includes：

Judging unit, any one carrying for being determined in the carrying continuity determining unit in the PDN connections needs to keep consecutive hours, determines whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, the continuity determining unit of the PDN connections determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy,, then the continuity determining unit of the PDN connections business continuance of the PDN is determined to keep continuous.

In the 14th kind of possible implementation of fourth aspect present invention, the sending module specifically for：

When determining that the business continuance of the PDN connections changes, the business continuance information of the PDN connections is sent to the MME.

In the 15th kind of possible implementation of fourth aspect present invention, if PDN connections just set up, the sending module specifically for：

After preset duration, the business continuance information of the PDN connections is sent to the MME.Fifth aspect present invention provides a kind of mobility management entity MME, including：

Receiver, the business continuance information of the packet data network PDN connections for obtaining user equipment (UE)；

Processor, for when trigger condition is met, determining whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；

If it is not, then the processor is that the UE selects new packet data gateway PGW, and indicate that the UE disconnects the connection with being the former PGW that the UE is serviced, and indicate that the UE sets up new PDN with the new PGW and is connected； If so, then the processor keeps the UE and former PGW connection.In the first possible implementation of fifth aspect present invention, the receiver specifically for：

The business continuance information for the PDN connections that the network equipment is sent is received, wherein, the business continuance information of the PDN connections is determined by the network equipment according to the continuity information of each business carried in the PDN connections.

In second of possible implementation of fifth aspect present invention, the network equipment is policy control Rulemaking entity PCRF, the former PGW, be the UE services gateway S-GW in any one.

In the third possible implementation of fifth aspect present invention, when the network equipment is the PCRF, and the agreement between the former PGW and the S-GW be general packet radio service technology tunnel label GTP agreements when, the receiver specifically for：

In the 4th kind of possible implementation of fifth aspect present invention, when the network equipment is the PCRF, and the agreement between the former PGW and the S-GW be the 6th edition PMIPv6 agreement of proxy mobile internet protocol when, the receiver specifically for：

Receive business continuances of the PCRF by the S-GW PDN connections sent

^ I Ft from Θ,.

In the 5th kind of possible implementation of fifth aspect present invention, when the network equipment be the former PGW when, the receiver specifically for：

Receive business continuances of the former PGW by the SGW PDN connections sent

^ I Ft from Θ,.

In the 6th kind of possible implementation of fifth aspect present invention, when the network equipment is the S-GW of UE service, the receiver specifically for：

In the 7th kind of possible implementation of fifth aspect present invention, the receiver specifically for：

The continuity information of each carrying in the PDN connections is obtained, the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections. In the 8th kind of possible implementation of fifth aspect present invention, the receiver specifically for：

The continuity information of each carrying in the PDN connections is obtained, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN is to need to keep continuous；

In the 9th kind of possible implementation of fifth aspect present invention, the receiver specifically for：

The continuity information of each carrying in the PDN connections is obtained, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, the MME determines whether the PDN connections meet first operator's selection strategy；

With reference to fifth aspect present invention and the 5th aspect the first to the 9th kind of possible implementation, in the tenth kind of possible implementation of fifth aspect present invention, the receiver specifically for：It is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of the UE services are sent.

With reference to fifth aspect present invention and the 5th aspect the first to the tenth kind of possible implementation, in a kind of the tenth possible implementation of fifth aspect present invention, the trigger condition be following condition in any one：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

With reference to fifth aspect present invention and the 5th aspect the first to a kind of the tenth possible implementation, in the 12nd kind of possible implementation of fifth aspect present invention, the processing implement body For：

The corresponding each PGW of affiliated access points APN of former PDN connections relevant information is obtained, wherein, the corresponding each PGW of APN relevant information includes：Each PGW and UE range information, each PGW and UE Delay, the load information of each PGW；

It is that the UE selects new PGW from each PGW according to the corresponding each PGW of APN relevant information and the UE actual demand.

In the 13rd kind of possible implementation of fifth aspect present invention, in addition to：

Transmitter, for sending DNS query request to domain name system server DNS, for inquiring about the corresponding each P G W information of the APN；

The receiver is additionally operable to：Receive the internet protocol address for each PGW that the DNS is sent；

The processor specifically for：Each PGW received according to the receiver IP address determines each PGW and the UE distance.

In the 14th kind of possible implementation of fifth aspect present invention, the processor specifically for：

In the 15th kind of possible implementation of fifth aspect present invention, the processor specifically for：

Determined the need for selecting new PGW for the UE according to second operator's selection strategy.In the 16th kind of possible implementation of fifth aspect present invention, second operator selection strategy is：When the PDN connections of the UE are in EPS Connection Management Idle state ECM-IDLE, new PGW is selected for the UE, or, all new PGW need not be selected when the PDN connections of the UE are under any state for the UE, or, select new PGW when the PDN connections of the UE need not keep business continuance for the UE.

Sixth aspect present invention provides a kind of network equipment, including：

Receiver, the business continuance information of each business carried for obtaining in PDN connections；Processor：Business continuance information for PDN connections described in the business continuance acquisition of information according to each business carried in the PDN connections that the receiver is obtained； Transmitter, the business continuance for sending the PDN connections to mobile management entity MME

^ I Ft from Θ,.

In the first possible implementation of sixth aspect present invention, the processor specifically for：

According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping connecting；

In second of possible implementation of sixth aspect present invention, the processor specifically for：

With reference to the first and second of possible implementation of sixth aspect present invention and the 6th aspect, in the third possible implementation of sixth aspect present invention, the network equipment be policy control Rulemaking entity PCRF, the receiver specifically for：

Receive the Business Stream characteristic information for each business that bag detection entity TDF is sent；

In the 4th kind of possible implementation of sixth aspect present invention, the Business Stream characteristic information of each business includes：The five-tuple information of the business or the application layer message of the business.

With reference to the third and the 4th kind of possible implementation of sixth aspect present invention, in the present invention the Six aspect the 5th kind of possible implementation in, the receiver specifically for：

According to the Business Stream characteristic information of each business, and prestore or the business continuance characteristic information of miscellaneous service type that is obtained from external data base determines the business continuance of each business.

With reference to the first and second of possible implementation of sixth aspect present invention and the 6th aspect, in the 6th kind of possible implementation of sixth aspect present invention, the network equipment be policy control Rulemaking entity PCRF, the receiver specifically for：

With reference to sixth aspect present invention and the 6th aspect the first to the 6th kind of possible implementation, in the 7th kind of possible implementation of sixth aspect present invention, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the packet data gateway PGW and gateway S-GW of UE service is packet radio service technology tunnel label GTP agreements；

The transmitter specifically for：The business continuance information of the PDN connections is sent to the MME by the PGW and S-GW.

With reference to sixth aspect present invention and the 6th aspect the first to the 6th kind of possible implementation, in the 8th kind of possible implementation of sixth aspect present invention, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the PGW and the S-GW of UE service is the 6th edition PMIPv6 agreement of proxy mobile internet protocol；

The transmitter specifically for：The business continuance information of the PDN connections is sent to the MME by the S-GW.

With reference to the first and second possible implementation of sixth aspect present invention and the 6th aspect, in the 9th kind of possible implementation of sixth aspect present invention, the network equipment is the PGW of the UE services, the receiver specifically for：

The transmitter specifically for：The business continuance information of the PDN connections is sent to the MME by the SGW serviced for the UE. With reference to the first and second possible implementation of sixth aspect present invention and the 6th aspect, in the tenth kind of possible implementation of sixth aspect present invention, the network equipment is the PGW of the UE services, the receiver specifically for：

With reference to the first and second of possible implementation of sixth aspect present invention and the 6th aspect, in a kind of the tenth possible implementation of sixth aspect present invention, the network equipment is the SGW of UE service, the receiver specifically for：The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business.

In the 12nd kind of possible implementation of sixth aspect present invention, the network equipment is the SGW of UE service, the receiver specifically for：

The processor specifically for：The continuity of each carrying in the PDN connections is determined according to the business continuance information of each business carried in the PDN connections；

Judge whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN connections is to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, it is determined that the business continuance of the PDN connections is that need not keep continuous.

In the 13rd kind of possible implementation of sixth aspect present invention, the network equipment is the SGW of UE service, the receiver specifically for：

If any one carrying in the PDN connections needs to keep continuous, determine whether the PDN connections meet first operator's selection strategy；

In the 14th kind of possible implementation of sixth aspect present invention, the transmitter specifically for：

In the 15th kind of possible implementation of sixth aspect present invention, if PDN connections just set up, the transmitter specifically for：

After preset duration, the business continuance information of the PDN connections is sent to the MME.The embodiment of the present invention provides a kind of business continuance determination methods and equipment, and MME obtains the business continuance information of UE PDN connections, and the business continuance information connected according to PDN determines whether PDN connections need to keep business continuity；If PDN connections need not keep business continuity, MME is that UE selects new PGW, if PDN connections need to keep business continuity, MME keeps UE and original PGW connection.The above method, it ensure that the business for the UE for needing to keep business continuance is normally continuous, and on the premise of the business continuance of each business in not influenceing PDN connections, to be not necessary to guaranty that the UE of business continuance selects the PGW being more suitable for, so that UE path is more excellent, route resource is saved.Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are some embodiments of the present invention, for those of ordinary skill in the art For, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the basic framework schematic diagram of 3GPP networks；

The flow chart of the processing method embodiment one of Fig. 2 business continuances of the present invention；

Fig. 3 is the flow chart of the processing method embodiment two of business continuance of the present invention；

Fig. 4 is the signaling process figure of the processing method embodiment three of business continuance of the present invention；

Fig. 5 is the signaling process figure of the processing method example IV of business continuance of the present invention；

Fig. 6 is the signaling process figure of the processing method embodiment five of business continuance of the present invention；

Fig. 7 is the signaling process figure of the processing method embodiment six of business continuance of the present invention；

Fig. 8 is the signaling process figure of the processing method embodiment seven of business continuance of the present invention,

Fig. 9 is the signaling process figure of the processing method embodiment eight of business continuance of the present invention；Figure 10 is the signaling process figure of the processing method embodiment nine of business continuance of the present invention；Figure 11 is the structural representation of mobile management entity embodiment one of the present invention；

Figure 12 is the structural representation of mobile management entity embodiment two of the present invention；

Figure 13 is the structural representation of inventive network apparatus embodiments one；

Figure 14 is the structural representation of mobile management entity embodiment three of the present invention；

Figure 15 is the structural representation of inventive network apparatus embodiments two.Embodiment

To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

Before various embodiments of the present invention are introduced, the application scenarios of the present invention are first introduced, present invention is mainly applied in 3GPP networks, Fig. 1 is the basic framework schematic diagram of 3GPP networks, as shown in figure 1, in the architecture, to access some packet data network（Packet Data Network, abbreviation PDN), UE requires connect to a specific PGW, the specific PGW be responsible for may be coupled in the IP address that UE distribution accesses the PDN networks, 3GPP networks some PDN PGW might have it is multiple.It is exactly main in the network of institute of operator subordinate, the network in 3GPP networks, between UE and PGW Universal Terrestrial wireless access network (evolved universal terrestrial radio access network including evolution, abbreviation e-UTRAN), mobility management entity (Mobility Management Entity, abbreviation MME), home subscriber server（Home Subscriber Server, abbreviation HSS), gateway（Server Gateway, abbreviation SGW), as shown in figure 1, policy control Rulemaking entity can also be included in 3GPP networks（Policy Control Rule Function, abbreviation PCRF), bag detection entity（Traffic Detection Function, abbreviation TDF) etc..Each entity in the network of institute of operator subordinate between UE and PGW collectively forms the transmission path of Business Stream between UE and PDN:UE → E-UTRAN → SGW → PGW, and the path just turns into a packet data network connection（PDN connection), UE can set up multiple PDN connections, and each PDN connections can include one or more carryings（Bearer), each bearer has the characteristics such as specific propagation delay time, transmission bandwidth, and these bearer are used to carry the Business Stream with heterogeneous networks requirement in PDN connections, and each bearer can carry one or more Business Streams.Therefore, each PDN connections can have multiple different Business Streams above.

The present invention program can be divided mainly into two aspects：First aspect, the business continuance characteristic to UE some PDN connection judge, judge whether the PDN connections need to keep continuous；Second aspect, the network equipment are according to the process that the business continuance information of the PDN connections got is that UE selects suitable PGW to select.

The flow chart of the processing method embodiment one of Fig. 2 business continuances of the present invention, MME is mainly described according to the process that obtained business continuance information is the suitable PGW of UE selections in the present embodiment, as shown in Fig. 2 the present embodiment provide business continuance method Bao include Yi Xia Walk it is rapid：

Walk rapid 101, MME obtain the business continuance information of UE PDN connections.

In various embodiments of the present invention, business continuance refers to whether the business of user allows to be interrupted, that is to say, that when the UE IP address used changes, whether the ongoing business of the UE can also continue to be normally carried out.If UE IP address changes, the ongoing business of UE is unaffected, still it can be normally carried out, this kind of business is known as that the business of business continuance need not be kept, for example, user accesses the business of Web page, access of the user to Web page can't be influenceed when UE IP address changes, therefore, the business of Web page is accessed to keep the business of business continuance.If UE IP address changes, cause the ongoing service disconnections of the UE, this kind of business is known as the business for needing to keep business continuance, such as internet protocol voice service（Voice over Internet Protocol, abbreviation VoIP) business, VoIP business is also referred to as the networking telephone, if UE IP address changes in communication process, then normal logical Words process will be interrupted, so VoIP business is the business for needing to keep business continuance.Ensureing business continuance mainly to have in two ways, a kind of mode is ensured by the related mechanism of application layer, is by Internet in another way（IP layers）Mechanism ensure.The mechanism of Internet is mainly to be realized by ensureing that UE IP address keeps constant during whole service conversation.In order to ensure that UE IP address does not change, it is desirable under any states of UE（Such as mobile status）Its used IP address anchor point does not change, and IP address anchor point herein typically refers to the PGW in some of network gateway, such as 3GPP networks, as long as PGW is constant used in UE, and UE IP address is maintained for constant.

In various embodiments of the present invention, the business continuance information of each business carried in the business continuance information of PDN connections or PDN connections includes following three kinds of situations：（A) need to keep business continuance;(b) only in the grouping system of evolution（Evolved Packet System, abbreviation EPS) connection management connected state（EPS Connection Management-CONNECED, abbreviation ECM-CONNECED) need to keep business continuance;(c) business continuance etc. need not be kept, simply 3 kinds of business continuance information are listed herein, but the present invention is not limited thereto system, and the continuity information of business can also include other information.

MME obtains the business continuance information of UE PDN connections, can pass through following two modes：

The first acquisition modes, MME receives the business continuance information for the PDN connections that the network equipment is sent, wherein, the continuity information that the business continuance information of PDN connections is connected each business carried by the network equipment according to PDN is determined.

Wherein, the network equipment can be policy control Rulemaking entity（Policy Control Rule Function, abbreviation PCRF), original PGW, for UE service gateway S-GW in any one.The continuity information that PCRF, original PGW and SGW can connect each business carried according to PDN determines the business continuances of PDN connections.

When the network equipment is PCRF, and agreement between original PGW and S-GW is general packet radio service technology（General Packet Radio Service, abbreviation GPRS) tunnel label（GPRS Turning Protocol, abbreviation GTP) agreement when, MME receive the network equipment send PDN connections business continuance information, specially：MME receives business continuance information of the PCRF by the former PGW and S-GW PDN connections sent.That is PCRF is determined after the business continuance of PDN connections, and the business continuance information that PDN is connected is sent into former PGW, and former PGW is then forwarded to SGW, MME is sent to by SGW.

When the network equipment is PCRF, and the agreement between original PGW and S-GW is the 6th edition IPv6 of proxy mobile internet protocol (Proxy Mobile Internet Protocol Version6, abbreviation PMIPv6) agreement when, MME receives the business continuance information for the PDN connections that the network equipment is sent, and is specially：MME receives business continuance information of the PCRF by the S-GW PDN connections sent.That is PCRF is determined after the business continuance of PDN connections, and the business continuance information that PDN is connected is transmitted directly into SGW, MME is sent to by SGW, and the business continuance information that need not connect PDN during this is sent to former PGW.

When the network equipment is original PGW, MME receives the business continuance information for the PDN connections that the network equipment is sent, and is specially：MME receives business continuance information of the original PGW by the SGW PDN connections sent.That is PGW is determined after the business continuance of PDN connections, and the business continuance information that PDN is connected is sent into SGW, MME is then forwarded to by SGW.

When the network equipment is the S-GW of UE services, MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE), is specially：MME receives the business continuance information for the PDN connections that S-GW is sent.That is SGW determines after the business continuance of PDN connections that the business continuance information that PDN is connected directly is sent to MME by SGW.

Second of acquisition modes, MME obtains the continuity information of each carrying in PDN connections, and the business continuance information of PDN connections is obtained according to the continuity information of each carrying in PDN connections.

Wherein, MME obtains the continuity information of each carrying in PDN connections, is specially：MME is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of UE services are sent.

MME obtains the business continuance information of PDN connections according to the continuity information of each carrying in PDN connections, is specially：MME judges whether each carrying is required for keeping continuous in PDN connections according to the continuity information of each carrying in PDN connections；If any one carrying in PDN connections needs to keep continuous, MME determines PDN business continuance to need to keep continuous；If all carryings need not all keep continuous in PDN connections, MME determines PDN business continuance to keep continuous.Or, when any one carrying of MME on PDN connections are determined needs to keep business continuance, whether the determination PDN connections that MME enters a Walk meet first operator's selection strategy, if PDN connections meet first operator's selection strategy, MME determines PDN business continuance to need to keep continuous；If all carryings need not all keep continuous in PDN connections, or any one carrying in PDN connections needs to keep continuous, but the PDN connections First operator's selection strategy is unsatisfactory for, then MME determines PDN business continuance to keep continuous.

In the present embodiment, it can include needing to keep the type of the PDN connections of business continuance in first operator's selection strategy, operator can formulate different strategies when formulating first operator's selection strategy for different types of PDN connections, some PDN are connected as needing to keep business continuance, and other PDN are connected as that business continuance need not be kept.MME determines whether the PDN connections need to keep connecting according to the type of current PDN connections.The signing information of user can also be included in first operator's selection strategy, record has the business continuance information of the PDN in the signing information of the user, that is the PDN is needs to keep business continuance or need not keep business continuance, and MME can determine whether the PDN connections need to keep connecting according to the PDN recorded in user signing contract information business continuance information.First operator's selection strategy is formulated by operator, and the strategy that different operators are formulated may be different, therefore, and the first operator's selection strategy mentioned in various embodiments of the present invention can also be other strategies, and the present invention is not limited this.

Walk rapid 102, when trigger condition is met, the business continuance information that MME is connected according to PDN determines whether PDN connections need to keep continuous.

MME is after the business continuance information of PDN connections is got, when trigger condition is met, and the business continuance information that MME is connected according to PDN determines whether PDN connections need to keep continuous, and trigger condition can be any one in following condition here：The generation of mobile management event, new business initiation, the establishment of original service ending, EPS carrying, the modification of EPS carryings and EPS deletion.Wherein, establishment, the modification of EPS carryings and the EPS deletion of EPS carryings are all session management event, specifically, MME determines that UE has carried out location updating, or UE has been switched to a new MME, or when having the event generation related to the PDN connections, the business continuance information that MME is connected according to PDN determines whether PDN connections need to keep continuous, that is MME judges whether to need to select new PGW for UE, has the event related to the PDN connections to occur specifically refer to here：There is new business to initiate or terminate, EPS Bearer establishment, modification and deletion etc..If it is judged that be no, then Zhi Hang Walk rapid 103, if it is judged that being yes, then Zhi Hang Walk rapid 104.

Walk rapid 103, MME are that UE selects new PGW, and indicate that UE disconnects the connection with being the former PGW that UE is serviced, and indicate that UE sets up new PDN with new PGW and is connected.

If the business continuance information that MME is connected according to PDN determines that the PDN connections need not keep continuous, it is that UE selects new PGW, tool that a new PGW, MME can be selected for UE Body is：MME obtains the affiliated access points of original PDN connections（Access Point Name, abbreviation APN) corresponding each PGW relevant information, wherein, the corresponding each PGW of APN relevant information includes：Each PGW and UE range information, each PGW and UE Delay, each PGW load information；MME selects new PGW from each PGW according to the corresponding each PGW of APN relevant information and UE actual demand for UE.

Wherein, MME obtains the range information with UE of the corresponding each PGW of APN belonging to original PDN connections, is specially：The domain name system that MME passes through standard（Domain Name System, abbreviation DNS) query process to dns server send DNS query request, for inquiring about the corresponding each PGW information of the APN, then, dns server returns to the IP address of the corresponding each PGW of APN belonging to original PDN connections to MME, MME receives the IP address of the corresponding each PGW of APN belonging to the former PDN connections that DNS is sent, and each PGW and UE distance are determined according to the positional information of each PGW IP address and UE.MME can be according to each PGW and UE distance from closely to remote distance generation PGW distance-taxis list, or PGW time delay sorted lists are generated from small to large according to each PGW and UE time delay, or according to each PGW load sorted lists for loading generation PGW from small to large, so as to carry out optimal PGW selection according to these sorted lists, UE positional information can be with cell ID here（Cell Identity, abbreviation cell ID), tracking area identification（Tracking Area Identity, abbreviation TAI) or Base Station Identification（ENB ID) etc..

Optionally, MME obtains the relevant information of the corresponding each PGW of APN belonging to original PDN connections, can also be in the following manner：MME inquires about the relevant information of the corresponding each PGW of APN belonging to original PDN connections from pre-configured database, certainly, MME can also obtain PGW relevant information from operation management maintainance (Operation Administration and Maintenance, abbreviation OAM) center or other external data bases.

MME selects suitable PGW judgment principle to include many aspects, such as nearest PGW in MME chosen distances UE current locations, or the smaller PGW of selection load for UE, or selects shorter PGW of the routed path between UE etc..Alternatively, MME for UE when selecting new PGW, the network strategy of operator may be also needed to consider, that is MME needs to be determined the need for selecting new PGW for UE according to second operator's selection strategy, in the case where meeting second operator's selection strategy, MME is that the UE selects new PGW, second operator's selection strategy is formulated by operator oneself, and second operator's selection strategy can be：It is that UE selects new PGW when UE PDN connections are in ECM-IDLE states, or, all need not when UE PDN connections are under any state New PGW is selected for UE, or, new PGW is selected for UE when UE PDN connections need not keep business continuance, or, under any circumstance, new PGW is selected all without for UE.The selection strategy that different operators are formulated may be different, certainly, and second operator's selection strategy can also be other strategies, and the present invention is not limited this.If second operator's selection strategy is when UE PDN connections are in EPS connection management Idle state（EPS Connection Management-IDLE, abbreviation ECM-IDLE) when, new PGW is selected for UE, shellfish lj MME for UE when selecting new PGW, also need to judge whether UE PDN connections are in ECM-IDLE states, only MME just selects new PGW for UE when UE PDN connections are in ECM-IDLE states, if UE PDN connections are in ECM-CONNECTION states, UE PDN connections need to keep continuous, and MME can not select new PGW for UE.UE PDN is connected with ECM-CONNECED states and ECM-IDLE states, UE and network connection under ECM-CONNECED states, can carry out normal business；UE is in idle condition under ECM-IDLE states, and UE is disconnected with network, and UE does not have business.

If the PDN connections that MME is defined as UE select new PGW, then initiate the process of the PDN connections between disconnection UE and original PGW, and require that UE initiates the new PDN connections based on identical APN and sets up process, MME can initiate UE PDN connection disconnection flows during this, and the flow can all delete all contextual informations related to the PDN connections in network.MME can indicate UE using APN belonging to former PDN connections to carry out new PGW selection simultaneously, and new PDN establishment of connections are then completed between UE and new PGW.

Walk rapid 104, MME keep UE and original PGW connection.

If the business continuance information that MME is connected according to PDN determines that the PDN connections need to keep continuous, then illustrate there are business needs to keep continuous in the business carried in PDN connections, in order to ensure the continuity of business, need to ensure that UE IP address is constant, therefore, for UE new PGW, UE can not be selected still to be communicated using former PGW.

The method that the present embodiment is provided, Μ Μ Ε obtain the business continuance information of UE PDN connections, and the business continuance information connected according to PDN determines whether PDN connections need to keep business continuity；If PDN connections need not keep business continuity, Μ Μ Ε are that UE selects new PGW, if PDN connections need to keep business continuity, Μ Μ Ε keep UE and original PGW connection.The above method, ensure that the business for the UE for needing to keep business continuance is normally continuous, and on the premise of the business continuance of each business in not influenceing PDN connections, to be not necessary to guaranty that business continuance The PGW that is more suitable for of UE selections so that UE path is more excellent, saves route resource.

Fig. 3 is the flow chart of the processing method embodiment two of business continuance of the present invention, the business continuance characteristic that some PDN connection to UE is mainly described in the present embodiment judges, judge whether the PDN connections need to keep continuous, as shown in figure 3, the present embodiment provide business continuance processing method Bao include Yi Xia Walk it is rapid：

Walk rapid 201, the network equipment obtain the business continuance information of each business carried in PDN connections.

In the present embodiment, the network equipment can be PCRF, be UE services PGW or SGW in any one.

When the network equipment is PCRF, then the network equipment obtains the business continuance information of each business carried in PDN connections, there is two ways：The first acquisition modes, PCRF receive bag detection entity（Traffic Detection Function, abbreviation TDF) send each business Business Stream characteristic information；PCRF determines the business continuance of each business according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.The business continuance information for each business that second acquisition modes, PCRF receptions TDF are sent, wherein, the business continuance information of each business is what TDF was determined according to the Business Stream characteristic information of each business.

In the first acquisition modes, the beginning and end of each business of the TDF to being carried in PDN connections is detected, when have in PDN connections business initiate or at the end of, TDF is detected to the business, and specific detection method can use such as deep-packet detection（Deep Packet Inspection, abbreviation DPI) technology etc., and the Business Stream characteristic information of business is obtained according to testing result, herein, Business Stream characteristic information is probably any information related to Business Stream, such as the five-tuple information or the application layer message of business of business, the five-tuple information of business includes：Former IP address, purpose IP address, former port numbers, destination slogan, protocol type.TDF is got after the Business Stream characteristic information of business, and Business Stream characteristic information is sent into PCRF.

PCRF determines the business continuance of each business according to the Business Stream characteristic information of each business, is specially after the Business Stream characteristic information of each business of TDF transmissions is got：PCRF is according to the Business Stream characteristic information of each business, and prestores or from external data base（Third party's business platform or DPI databases）The business continuance characteristic information of the miscellaneous service of acquisition determines the business continuance of each business.That is the business continuance information of every kind of business, i.e. which kind of business are pre-saved on PCRF needs to keep continuity, and which kind of business need not keep continuity, then, special according to Business Stream is got Reference ceases, matched with the business continuance of each business prestored, for example, the business continuance information of the QQ business that is stored with PCRF and VoIP business, the business continuance information of QQ business is that need not keep continuity, the business continuance information of VoIP business keeps continuous for needs, the information of five-tuple information and application layer of the PCRF in the service feature stream information got, whether determine the business is QQ business, if QQ business, then determine that the business need not keep business continuance, if the business is VoIP business, then determine that the business needs to keep business continuance.

In second of acquisition modes, TDF is detected to business, get after the Business Stream characteristic information of business, the business continuance of business is determined according to the Business Stream characteristic information of business, TDF can here be repeated no more using the business continuance for determining business according to Business Stream characteristic information with PCRF identicals method.

When the network equipment is the PGW of UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, specifically there is two ways：The first acquisition modes, PGW receive the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in PDN connections is determined by PCRF according to the Business Stream characteristic information of each business.Second acquisition modes, when have in PDN connections new business initiate or at the end of, PGW obtains the Business Stream characteristic information of each business, PGW determines the business continuance of each business according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.Wherein, the Business Stream characteristic information of each business can be obtained by TDF detections, be then sent to PGW.

As the SGW that the network equipment is UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, is specially：SGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in PDN connections is determined by PCRF according to the Business Stream characteristic information of each business.

Walk rapid 202, the network equipment connect the business continuance information of the business continuance acquisition of information PDN connections of each business carried according to PDN.

The network equipment connects the business continuance information of the business continuance acquisition of information PDN connections of each business carried according to PDN, is specially：The network equipment connects the business continuance information of each business carried according to PDN, judges whether each business is required for keeping continuous；If any one business in each business carried in PDN connections needs to keep continuous, the network equipment determines the business continuance of PDN connections to need to keep continuous；If all business carried in PDN connections are all It need not keep continuous, then the network equipment determines the business continuance of PDN connections to keep continuous.Or, any one business in each business that the network equipment is carried on PDN connections are determined needs with keeping continuous Jin mono- Walk, the network equipment determines whether PDN connections meet first operator's selection strategy, if PDN connections meet first operator's selection strategy, the network equipment determines PDN business continuance to need to keep continuous；If all business need not all keep continuous in PDN connections, or any one business in PDN connections needs to keep continuous, but PDN connections are unsatisfactory for first operator's selection strategy, then the network equipment determines the business continuance of PDN connections to keep continuous.

In detail below come illustrate the network equipment connected according to PDN each business carried business continuance information judge the PDN connections business continuance method.The business continuance information of PDN connections includes：（A) need to keep business continuance；（B) business continuance need not be kept；（C) only holding business continuance is needed in ECM-CONNECTED states.Whenever having business to start or terminate in PDN connections, the network equipment just updates the business continuance information of PDN connections according to the business continuance information of the business.Here, the principle that the business continuance of whole PDN connections is judged by the business continuance information of each business is：Only when all business carried in the PDN connections need not all keep business continuance, the PDN connections need not just keep business continuance；If there is a business to need to keep business continuance in the PDN connections, the PDN connections are accomplished by keeping business continuance.

Herein, it is also assumed that the business continuance information of each business of PDN connections has priority, the priority of business continuance is followed successively by from high in the end（a) 、（b) 、（C), the business continuance of the business of highest priority is consistent during the business continuance of PDN connections is always connected with the PDN.During concrete implementation, for the ease of judging when some service endings the business continuance of PDN connections, the network equipment can be that the business continuance of every kind of business safeguards a counter in the context of PDN connections, the counter is used for the quantity for recording the business for belonging to the business continuance corresponding to the counter, the initial value of counter is 0, whenever thering is a business to set up, the corresponding counter of business continuance corresponding to the business is added 1, whenever a service ending, the value of the corresponding counter of business continuance corresponding to the business is subtracted 1, the value of counter is 0 and shows that the business for needing to keep business continuance is not present in the PDN connections.

When the network equipment is SGW, the network equipment connects the business continuance information of the business continuance acquisition of information PDN connections of each business carried according to PDN, is specially：SGW is according to PDN The business continuance information of each business carried in connection determines the continuity of each carrying in PDN connections, and SGW judges whether each carrying is required for keeping continuous in PDN connections according to the continuity information of each carrying in PDN connections；If any one carrying in PDN connections needs to keep continuous, SGW determines PDN business continuance to need to keep continuous；If all carryings need not all keep continuous in PDN connections, SGW determines PDN business continuance to keep continuous.Or, the business continuance information that SGW connects each business carried according to PDN determines the continuity of each carrying in PDN connections, if any one carrying in PDN connections needs to keep continuous, SGW Jin mono- Walk determine whether PDN first meets operator's selection strategy；If PDN connections meet first operator's selection strategy, SGW determines PDN business continuance to need to keep continuous；If all carryings need not all keep continuous in PDN connections, or any one carrying in PDN connections needs to keep continuous, but PDN connections are unsatisfactory for first operator's selection strategy, then SGW determines PDN business continuance to keep continuous.

Walk rapid 203, the network equipment send the business continuance information of PDN connections to MME.

When it is GTP agreements that the network equipment, which is the agreement between PCRF, and PGW and S-GW, the network equipment sends the business continuance information of PDN connections to MME, is specially：PCRF sends the business continuance information of PDN connections by PGW and S-GW to MME, i.e. the PDN business continuance information connected is first sent to PGW by PCRF, and PGW relays to SGW, and MME is sent to by SGW.

When it is PMIPv6 agreements that the network equipment, which is the agreement between PCRF, and PGW and SGW, the network equipment sends the business continuance information of PDN connections to MME, is specially：PCRF sends the business continuance information of PDN connections by SGW to MME, i.e. the PDN business continuance information connected is transmitted directly to SGW, is then forwarded to MME by SGW, it is not necessary to pass through PGW by PCRF.

When the network equipment is PGW, the network equipment sends the business continuance information of PDN connections to MME, is specially：PGW sends the business continuance information of PDN connections by SGW to MME, i.e. the PDN business continuance information connected is sent to SGW, MME is sent to by SGW by PGW.

In the present embodiment, the new message parameter of definable one carries the business continuance information of PDN connections, such as defines a PDN connection service type.In order to reduce in the business continuance information that the network equipment frequently sends PDN connections to MME, the present embodiment, the network equipment can be true When the business continuance for determining PDN connections changes, the business continuance information of PDN connections is just sent to MME.As UE has initiated a new business, and the new business need not keep business continuance, and all business of the UE before the new business need not all keep business continuance, then the business continuance of the PDN connections is still that need not keep continuous, the business continuance information of the PDN connections does not change, and the network equipment need not keep the message of business continuance without repeating to send.If the new business needs to keep business continuance, and all business of the UE before the new business are all not necessary to guaranty that business continuance, so, the business continuance of the PDN connections continuously becomes needs holding continuously by that need not keep, the business continuance information of the PDN connections is changed, and the network equipment needs to send the message for keeping business continuance.By above-mentioned mode, only when the business continuance information of PDN connections changes, the network equipment just sends business continuance message to MME, so as to reduce the resource sent shared by business continuance information.

If a PDN connection is just set up, the network equipment is after preset duration, the business continuance information of PDN connections is just sent to MME, during preventing that PDN connections from just setting up, UE sets up different business in a short period of time, and these business have a different business continuances, the network equipment needs to send the business continuance information of a plurality of PDN connections to MME in very short time, causes the waste of resource.

The method that the present embodiment is provided, the business continuance information for each business that MME is carried by obtaining in PDN connections, the business continuance of the business continuance acquisition of information PDN connections of each business carried is connected according to PDN, and the business continuance information that PDN is connected is sent to MME, so that business continuance information of the MME according to UE PDN connections, to need the connection for keeping the UE of business continuity to keep UE and original PGW, for the UE of business continuance need not be kept to select new PGW, it ensure that the business for the UE for needing to keep business continuance is normally continuous, and on the premise of the business continuance of business in not influenceing PDN connections, can be to be not necessary to guaranty that the PGW that the UE selections of business continuance are more suitable for, so that UE path is more excellent, save route resource.

Several specific embodiments are used below, and the technical scheme to embodiment of the method shown in Fig. 3 is described in detail.

Fig. 4 is the signaling process figure of the processing method embodiment three of business continuance of the present invention, in the present embodiment, the business continuance of PDN connections is determined by PCRF, and the business continuance information that PDN is connected is sent to MME, the scene that the present embodiment is directed to is scene of the S5/S8 interfaces between PGW and SGW using GTP agreements, i.e., the business that PCRF can connect PDN under the scene connects Continuous property characteristic information is directly transmitted to PGW.As shown in figure 4, the present embodiment provide method Bao include Yi Xia Walk it is rapid：

Walk rapid 301, TDF detection obtain the Business Stream characteristic information of business in PDN connections.

The beginning and end of business of the TDF to being carried in PDN connections is detected, when TDF detect have in PDN connections business initiate or at the end of, TDF is detected to the Business Stream, and TDF can be detected using DPI technologies, it is of course also possible to use other method is detected.The Business Stream characteristic information of business is probably any information related to Business Stream, the five-tuple information of such as business, entrained application layer message in Business Stream.

The Business Stream characteristic information of the business is sent to PCRF by Walk rapid 302, TDF.

The business continuance information of other business determines the business continuance of the PDN on Walk rapid 303, the business continuance for determining according to the Business Stream characteristic information of the business business, and Business Stream characteristic information according to the business and the PDN connections.

The business continuance information of each business carried in the business continuance information of PDN connections or PDN connections includes：（A) need to keep business continuance（B) business continuance need not be kept（C) only holding business continuance is needed in ECM-CONNECTED states.

Here, PCRF judges that the principle of the business continuance of whole PDN connections is by the business continuance information of each business：Only when carrying all business in the PDN connections and need not all keep business continuance, the PDN connections need not just keep business continuance；If there is a business to need to keep business continuance in the PDN connections, the PDN connections are accomplished by keeping business continuance.Or, any one business in each business that PCRF is carried on PDN connections are determined needs with keeping continuous Jin mono- Walk, PCRF determines whether PDN connections meet first operator's selection strategy, if PDN connections meet first operator's selection strategy, then PCRF determines the business continuance of PDN connections to need to keep continuous, if PDN connections are unsatisfactory for first operator's selection strategy, PCRF determines the business continuance of PDN connections to keep continuous.

Specific method is referred to the description in embodiment Er Walk rapid 202, repeats no more here.

Walk rapid 304, PCRF send decision-making and charging regulation message, the decision-making and the business continuance information being connected in charging regulation message comprising PDN to PGW.

In the present embodiment, the business continuance information that PCRF connects PDN is carried in decision-making and charging regulation message（Policy and Charging Rules Provision) in be sent to PGW, be integrated with the PGW strategy and charge execution function（Policy and Charging Enforcement Function, Abbreviation PCEF) entity, accordingly it is also possible to think that decision-making and charging regulation message have been sent to PCEF by PCRF.

Walk rapid 305, PGW send bearer update request to SGW, and the business continuance information of PDN connections is included in bearer update request.

The business continuance information that PGW connects PDN is carried asks in bearer update（Update

Bearer Request) in be sent to SGW.

Walk rapid 306, SGW send bearer update request to MME, and the business continuance information of PDN connections is included in bearer update request.

The business continuance information that SGW connects PDN is carried asks in bearer update（Update Bearer Request) in be sent to MME.

The business continuance information of the PDN connections of Walk rapid 307, MME to receiving is stored.

MME carries out preservation maintenance after receiving the business continuance information of PDN connections to the information, so that when trigger condition occurs, the business continuance information connected according to PDN determines whether PDN connections need to keep continuous.

MME carries out preservation maintenance after receiving the business continuance information of PDN connections to the information, so as to when deciding whether to carry out PGW gravity treatment as judgment condition.

Normal bearer update flow is carried out after Walk rapid 307, between MME and UE, bearer update flow is same as the prior art, repeats no more here.And after bearer update terminates, MME returns to bearer update to SGW and responded, SGW returns to bearer update to PGW and responded, and PGW returns to decision-making to PCRF and responded with charging policy.

It should be noted that, in other embodiments of the invention, when the S5/S8 interfaces between PGW and SGW use PMIPv6 agreements, now PCRF needs the business continuance information for connecting PDN to be sent to SGW rather than PGW, and its his Walk is suddenly identical with embodiment three.

Fig. 5 is the signaling process figure of the processing method example IV of business continuance of the present invention, the present embodiment is with implementing three difference, in the present embodiment, PCRF is only judged the business continuance of the single business in PDN connections, the business continuance of whole PDN connections is completed by PGW, and the scene that the present embodiment is directed to is scene of the S5/S8 interfaces between PGW and SGW using GTP agreements.As shown in figure 5, the present embodiment provide method Bao include Yi Xia Walk it is rapid：

Walk rapid 401, TDF detection obtain the Business Stream characteristic information of the business in PDN connections.

Specific implementation can refer to embodiment San Walk rapid 301 description, repeat no more here. The Business Stream characteristic information of the business is sent to PCRF by Walk rapid 402, TDF.Walk rapid 403, PCRF determine the business continuance of the business according to the Business Stream characteristic information of the business.

Walk rapid 404, PCRF send decision-making and charging regulation message, the decision-making and the business continuance information that the business is included in charging regulation message to PGW.

In the present embodiment, PCRF is only judged the business continuance of the single business in PDN connections, then, the business continuance information of single business is sent to PGW, PCRF can carry the business continuance information of the business in decision-making and charging regulation message（Policy and Charging Rules Provision) in be sent to PGW.

Walk rapid 405, PGW are determined according to the business continuance information of all business in the PDN connections should

PDN business continuance.

PGW determines the business continuance of the PDN according to the business continuance information of other business in the business continuance information of the business and the PDN connections, specific implementation can refer to embodiment San Walk rapid 304 description, here repeat no more, be that executive agent is different in the present embodiment.

In this implementation, PCEF is integrated with the PGW, therefore, here it can be appreciated that decision-making and charging regulation message are sent to PCEF by PCRF, the business continuance of the PDN is determined according to the business continuance information of other business on the Business Stream characteristic information of the business and the PDN connections by PCEF.

Walk rapid 406, PGW send bearer update request to SGW, and the business continuance information of PDN connections is included in bearer update request.

Walk rapid 407, SGW send bearer update request to MME, and the business continuance information of PDN connections is included in bearer update request.

The business continuance information of the PDN connections of Walk rapid 408, MME to receiving is stored.MME carries out preservation maintenance after receiving the business continuance information of PDN connections to the information, so that when trigger condition occurs, the business continuance information connected according to PDN determines whether PDN connections need to keep continuous.

Normal bearer update flow is carried out after Walk rapid 408, between MME and UE, bearer update flow is same as the prior art, repeats no more here.And after bearer update terminates, MME is to SGW Bearer update response is returned to, SGW returns to bearer update to PGW and responded, PGW returns to decision-making to PCRF and responded with charging policy.

Fig. 6 is the signaling process figure of the processing method embodiment five of business continuance of the present invention, the present embodiment is with implementing four difference, in the present embodiment, after PCRF is judged the business continuance of the single business in PDN connections, the business continuance information of single business is sent to SGW, the business continuance of whole PDN connections is judged by SGW, the scene that the present embodiment is directed to is scene of the S5/S8 interfaces between PGW and SGW using PMIPv6 agreements.As shown in fig. 6, the present embodiment provide method Bao include Yi Xia Walk it is rapid：

Walk rapid 501, TDF detection obtain the Business Stream characteristic information of the business in PDN connections.

Specific implementation can refer to embodiment San Walk rapid 301 description, repeat no more here.

The Business Stream characteristic information of the business is sent to PCRF by Walk rapid 502, TDF.

Walk rapid 503, PCRF determine the business continuance of the business according to the Business Stream characteristic information of the business.

The business continuance information of the business is sent to SGW by Walk rapid 504, PCRF.

In the present embodiment, PCRF is only judged the business continuance of the single business in PDN connections, then, the business continuance information of single business is sent to SGW, PCRF can carry the business continuance information of the business in gateway control and qos policy（Gateway control and QoS Rules Provision) SGW is sent in message.

Walk rapid 505, SGW determine the business continuance of the PDN according to the business continuance information of all business in PDN connections.

Specific implementation can refer to embodiment San Walk rapid 304 description, repeat no more here, be that executive agent is different in the present embodiment.

In this implementation, bearing binding and event reporting function that can be on SGW（Bearing Binding and Event Report Function, abbreviation BBERF) the business continuance information of all business in PDN connections determines the business continuance of the PDN.

Walk rapid 506, SGW send bearer update request to MME, and the business continuance information of PDN connections is included in bearer update request.

The business continuance information of the PDN connections of Walk rapid 507, MME to receiving is stored.MME carries out preservation maintenance after receiving the business continuance information of PDN connections to the information, so that when trigger condition occurs, the business continuance information connected according to PDN determines that PDN connections are It is no to need to keep continuous.

Normal bearer update flow is carried out after Walk rapid 507, between MME and UE, bearer update flow is same as the prior art, repeats no more here.And after bearer update terminates, MME returns to bearer update to SGW and responded, SGW returns to gateway control to PCRF and qos policy is responded.

Fig. 7 is the signaling process figure of the processing method embodiment six of business continuance of the present invention, the present embodiment is with implementing four difference, in the present embodiment, the business continuance information of single business is sent to PGW by PCRF, PGW judges to carry the business continuance characteristic of the carrying (bearer) of the business according to the business continuance information of single business, then the business continuance characteristic of carrying is sent to by MME by SGW, finally, the business continuance characteristic that each in being connected by MME according to PDN is carried determines the business continuance of PDN connections, the S5/S8 interfaces that embodiment is directed between PGW and SGW are the scene of GTP agreements.As shown in fig. 7, the present embodiment provide method Bao include Yi Xia Walk it is rapid：Walk rapid 601, TDF detection obtain the Business Stream characteristic information of the business in PDN connections.

The Business Stream characteristic information of the business is sent to PCRF by Walk rapid 602, TDF.

Walk rapid 603, PCRF determine the business continuance of the business according to the Business Stream characteristic information of the business.

Walk rapid 604, PCRF send decision-making and charging regulation message, the decision-making and the business continuance information that the business is included in charging regulation message to PGW.

Walk rapid 605, PGW determine the business continuance of the corresponding carrying of the business according to the business continuance information of each business in the corresponding carrying of the business.

There are multiple carryings in-individual PDN connections, multiple business can be carried in each carrying, here,

SGW determines the business continuance of the corresponding carrying of the business according to the business continuance information of each business in the corresponding carrying of the business, and the principle for the business continuance that SGW judges entirely to carry according to the business continuance information of each business is：Only when business all in the carrying need not all keep business continuance, the carrying need not just keep business continuance, if there is a business to need to keep business continuance in the carrying, the carrying is accomplished by keeping business continuance. In the present embodiment, the business continuance information of each business carried in the business continuance information of PDN connections or PDN connections or the business continuance information of carrying can include (a) and need to keep business continuance;(b) only holding business continuance is needed in ECM-CONNECTED states;(c) business continuance need not be kept, simply 3 kinds of business continuance information are listed herein, but the present invention is not limited thereto system, and the continuity information of business can also include other information.

In the present embodiment, it is believed that business continuance has priority in 3, the priority of business continuance is followed successively by (a from high in the end：), (b), (c), the business continuance of the carrying of highest priority is consistent during the business continuance of the PDN connections is always connected with the PDN.When implementing, MME can carry the business continuance information of the carrying in the context of each carrying, so as to when have Business Stream start or at the end of be used for judging the business continuance characteristics of PDN connections.

Walk rapid 606, PGW send bearer update request to SGW, and the business continuance information of the corresponding carrying of the business is included in bearer update request.

Walk rapid 607, SGW send bearer update request to MME, and the business continuance information of the corresponding carrying of the business is included in bearer update request.

Walk rapid 608, MME determine the business continuance of PDN connections according to the business continuance information of each carrying in PDN connections.

MME is received after the business continuance information of the corresponding carrying of the business, and the business continuance of PDN connections is obtained according to the continuity information of each carrying in PDN connections, is specially：MME judges whether each carrying is required for keeping continuous in PDN connections according to the continuity information of each carrying in PDN connections；If any one carrying in PDN connections needs to keep continuous, MME determines PDN business continuance to need to keep continuous；If all carryings need not all keep continuous in PDN connections, MME determines PDN business continuance to keep continuous.In other implementation, MME is after it is determined that any one carrying in PDN connections needs to keep continuous; enters the determination of the Walk PDN connections and whether meets first operator's selection strategy, if PDN connections meet first operator's selection strategy, MME determines the business continuance of the PDN to need to keep continuous；If PDN connections are unsatisfactory for first operator's selection strategy, MME determines the business continuance of the PDN to keep continuous.

Walk rapid 609, MME are stored to the business continuance information of PDN connections.

MME carries out preservation maintenance to the business continuance information of PDN connections, so that when trigger condition occurs, the business continuance information connected according to PDN determines whether PDN connections need to keep continuous. Normal bearer update flow is carried out after Walk rapid 609, between MME and UE, bearer update flow is same as the prior art, repeats no more here.And after bearer update terminates, MME returns to bearer update to SGW and responded, SGW returns to bearer update to PGW and responded, and PGW returns to decision-making to PCRF and responded with charging regulation.

Fig. 8 is the signaling process figure of the processing method embodiment seven of business continuance of the present invention, the present embodiment is with implementing six difference, in the present embodiment, the business continuance information of single business is sent to SGW by PCRF, rather than PGW, SGW judge to carry the carrying of the business according to the business continuance information of single business（Bearer business continuance characteristic), then the business continuance characteristic of carrying is sent to MME, finally, the business continuance characteristic that each in being connected by MME according to PDN is carried determines the business continuance of PDN connections, and the S5/S8 interfaces that embodiment is directed between PGW and SGW are the scene of PMIPv6 agreements.As shown in figure 8, the present embodiment provide method Bao include Yi Xia Walk it is rapid：

Walk rapid 701, TDF detection obtain the Business Stream characteristic information of business in PDN connections.

The Business Stream characteristic information of the business is sent to PCRF by Walk rapid 702, TDF.

Walk rapid 703, PCRF determine the business continuance of the business according to the Business Stream characteristic information of the business.

Walk rapid 704, PCRF send the business continuance information for including the business in gateway control and qos policy message, the gateway control and qos policy message to SGW.

In the present embodiment, PCRF is only judged the business continuance of the single business in PDN connections, then, the business continuance information of single business is sent to SGW, PCRF can carry the business continuance information of the business in gateway control and qos policy（Gateway control and QoS Rules Provision) message is sent to SGW.

Walk rapid 705, SGW determine the business continuance of the corresponding carrying of the business according to the business continuance information of each business in the corresponding carrying of the business.

The business continuance that six kinds of PGW of embodiment determine the corresponding carrying of the business according to the business continuance information of each business in the corresponding carrying of the business specifically is can refer to, is repeated no more here.

In this implementation, BBERF is integrated with SGW, BBERF that can be on SGW determines the business continuance of the PDN according to the business continuance information of the PDN all business connected.

Walk rapid 706, SGW send bearer update request to MME, and being included in bearer update request should The business continuance of the corresponding carrying of business.

Walk rapid 707, MME determine the business continuance of PDN connections according to the business continuance information of each carrying in PDN connections.

Walk rapid 708, MME are stored to the business continuance information of PDN connections.

MME carries out preservation maintenance to the business continuance information of PDN connections, so that when trigger condition occurs, the business continuance information connected according to PDN determines whether PDN connections need to keep continuous.

Normal bearer update flow is carried out after Walk rapid 708, between MME and UE, bearer update flow is same as the prior art, repeats no more here.And after bearer update terminates, MME returns to bearer update to SGW and responded, SGW returns to gateway control to PCRF and qos policy is responded.

Above-described embodiment three has by PCRF to judge business continuance characteristic into embodiment seven, but in some cases, when TDF functional entitys are disposed, can also directly be judged come the continuity to business by TDF.As shown in figure 9, signaling process figures of the Fig. 9 for the processing method embodiment eight of business continuance of the present invention, by TDF is directly judged come the continuity to business in the present embodiment, the method for the present embodiment offer, Bao include Yi Xia Walk it is rapid：

Walk rapid 801, TDF detection obtain the Business Stream characteristic information of the business in PDN connections.

Walk rapid 802, TDF determine the business continuance of the business according to the Business Stream characteristic information of the business.

Specifically, the method that PCRF in embodiment three determines the business continuance of the business according to the Business Stream characteristic information of the business is can refer to, is repeated no more here.

Walk rapid 803, TDF send the business continuance information of the business to PCRF.

Walk rapid 804, PCRF determine the business continuance of the PDN connections according to the business continuance information of all business in PDN connections.

Walk rapid 805, PCRF send the business continuance information of the PDN connections to MME.

The business continuance information of the PDN connections of Walk rapid 806, MME to receiving is stored.

Normal bearer update flow is carried out after Walk rapid 806, between MME and UE, bearer update flow is same as the prior art, repeats no more here.And after bearer update terminates, MME Return and respond to PCRF.

Figure 10 is the signaling process figure of the processing method embodiment nine of business continuance of the present invention, the present embodiment is directed to PGW and is integrated with PCEF in itself, and PCEF is integrated with using detection control (Application Detection Control again, abbreviation ADC) entity, ADC entities can complete the function that TDF entities are completed in embodiment eight, can complete the detection to traffic characteristics.As shown in Figure 10, the present embodiment provide method Bao include Yi Xia Walk it is rapid：

Walk rapid 901, PGW obtain the business continuity information of each business carried in PDN connections.When there is new Business Stream to initiate in PDN connections or at the end of, PCEF ADC entities detect the business continuity of business, in this implementation, for the acquisition of the business continuance information of each business, the information in packet can be carried out directly to extract by ADC to obtain, can also be that ADC is obtained by being analyzed the business Flow Behavior passed through in a period of time, for example when ADC can not extract effective Business Stream characteristic information from the single packet of Business Stream, during business continuance characteristic to judge Business Stream, so ADC can be detected within a period of time to the Business Stream, the business continuance characteristic of Business Stream is inferred to by the analysis for being to traffic data packet rows.

Walk rapid 902, PGW determine the business continuance of the PDN connections according to the business continuity information of each business in PDN connections.

Specific implementation, can refer to embodiment San Zhong Walk rapid 303 description, and simply executive agent is different from implementation three, therefore repeats no more here.

Walk rapid 903, PGW send the business continuance information of the PDN connections to MME.

The business continuance information of the PDN connections of Walk rapid 904, MME to receiving is stored.

Normal bearer update flow is carried out after Walk rapid 904, between MME and UE.Bearer update flow is same as the prior art, repeats no more here.

Walk rapid 906, MME return to response message to PGW.

MME returns to response message, response message Wei Dui Walk rapid 903 response to PGW.Figure 11 is the structural representation of mobile management entity embodiment one of the present invention, as shown in figure 11, and the MME that the present embodiment is provided includes：Acquisition module 11, determining module 12, gateway selecting module 13 and connection keep module 14. Wherein, acquisition module 11, the business continuance information of the packet data network PDN connections for obtaining user equipment (UE)；

Determining module 12, for when trigger condition is met, determining whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；The trigger condition is any one in following condition：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

Gateway selecting module 13, for the judged result in the determining module 12 for when being, new packet data gateway PGW is selected for the UE, and indicate that the UE disconnects the connection with the former PGW for UE services, and indicate that the UE sets up new PDN with the new PGW and is connected；Connection keeps module 14, for when the judged result of the determining module 12 is no, keeping the UE and former PGW connection.

The acquisition module 11 specifically for：The business continuance information for the PDN connections that the network equipment is sent is received, wherein, the business continuance information of the PDN connections is determined by the network equipment according to the continuity information of each business carried in the PDN connections.In the present embodiment, the network equipment is policy control Rulemaking entity PCRF, the former PGW, be the UE services gateway S-GW in any one.

When the network equipment is the PCRF, and agreement between the former PGW and the S-GW is when being general packet radio service technology tunnel label GTP agreements, the acquisition module 11 specifically for：Receive business continuance information of the PCRF by the former PGW and S-GW PDN connections sent.That is, the business continuance information of the PDN connections is determined by PCRF, the PDN business continuance information connected is sent to PGW by PCRF, and then the PDN business continuance information connected is transmitted to SGW by PGW, and the MME is being sent to by SGW.

When the network equipment is the PCRF, and agreement between the former PGW and the S-GW is when being the 6th edition PMIPv6 agreement of proxy mobile internet protocol, the acquisition module 11 specifically for：Receive business continuance information of the PCRF by the S-GW PDN connections sent.That is, the business continuance information of the PDN connections is determined by PCRF, the PDN business continuance information connected is sent to SGW by PCRF, and the MME is being sent to by SGW.

When the network equipment be the former PGW when, the acquisition module 11 specifically for：Receive The business continuance information that the former PGW passes through the SGW PDN connections sent.That is, the business continuance information of the PDN connections is determined by PGW, then, the PDN business continuance information connected is sent to SGW by PGW, and the MME is being sent to by SGW.

When the network equipment is the S-GW of UE service, the acquisition module 11 specifically for：Receive the business continuance information for the PDN connections that the S-GW is sent.That is, the business continuance information of the PDN connections is determined by SGW, then, the PDN business continuance information connected is sent to the MME by SGW.

In the present embodiment, the gateway selecting module 13 includes：Acquiring unit and determining unit.Acquiring unit, the relevant information for obtaining the corresponding each PGW of access points APN belonging to the former PDN connections, wherein, the corresponding each PGW of APN relevant information includes：Each PGW and UE range information, each PGW and UE Delay, the load information of each PGW；Determining unit, is that the UE selects new PGW from each PGW for the relevant information according to the corresponding each PGW of the APN and the actual demand of the UE.

The acquiring unit specifically for obtaining the information of the corresponding each PGW of access points APN belonging to the former PDN connections in the following manner：The acquiring unit inquires about the relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections from pre-configured database.When PGW information for PGW and the UE range information when, acquiring unit specifically for：First, DNS query request is sent to domain name system server DNS, for inquiring about the corresponding each PGW information of the APN；Then, acquiring unit receives the internet protocol address for each PGW that the DNS is sent, and each PGW and the UE distance are determined according to the IP address of each PGW.

In a kind of implementation of this implementation, the gateway selecting module 13 specifically for：Determined the need for selecting new PGW for the UE according to second operator's selection strategy.Second operator selection strategy is：When the PDN connections of the UE are in EPS connection management Idle state ECM-IDLE states, new PGW is selected for the UE, or, all new PGW need not be selected when the PDN connections of the UE are under any state for the UE, or, select new PGW when the PDN connections of the UE need not keep business continuance for the UE.

The MME that the present embodiment is provided, available for the technical scheme for performing the offer of embodiment of the method one, Specific implementation is similar with technique effect, repeats no more here.

Figure 12 is the structural representation of mobile management entity embodiment two of the present invention, compared with the MME shown in Figure 11, in the present embodiment, determine whether the PDN connections need to keep business continuity by MME oneself, other implementations are similar with the device shown in Figure 11, therefore repeat no more.As shown in figure 12, the MME that the present embodiment is provided includes：Acquisition module 21, determining module 22, gateway selecting module 23 and connection keep module 24.

Wherein, acquisition module 21, the business continuance information of the packet data network PDN connections for obtaining user equipment (UE)；

Determining module 22, for when trigger condition is met, determining whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；The trigger condition is any one in following condition：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

Gateway selecting module 23, for the judged result in the determining module 22 for when being, new packet data gateway PGW is selected for the UE, and indicate that the UE disconnects the connection with the former PGW for UE services, and indicate that the UE sets up new PDN with the new PGW and is connected；Connection keeps module 24, for when the judged result of the determining module 22 is no, keeping the UE and former PGW connection.

In the present embodiment, determining module 22 specifically for：The continuity information of each carrying in the PDN connections is obtained, the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections.

In a kind of implementation, the determining module 22 obtains the business continuance information of the PDN connections especially by the following manner：Determining module 22 obtains the continuity information of each carrying in the PDN connections, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, it is determined that module 22 determines the business continuance of the PDN to need to keep continuous；If all carryings need not all keep continuous in the PDN connections, it is determined that module 22 determines the business continuance of the PDN to keep continuous.

In another implementation, determining module 22 obtains the business continuance information of the PDN connections especially by the following manner：Determining module 22 obtains the continuity information of each carrying in the PDN connections, according to the continuity information of each carrying in the PDN connections, judges in the PDN connections Whether each carrying is required for keeping continuous；If any one carrying in the PDN connections needs to keep continuous, determining module 22 determines whether the PDN connections meet first operator's selection strategy；If the PDN connections meet first operator selection strategy, it is determined that module 22 determines the business continuance of the PDN to need to keep continuous；If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, it is determined that module 22 determines the business continuance of the PDN to keep continuous.

In above two mode, the continuity information that determining module 22 obtains each carrying in the PDN connections is specially：It is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of the UE services are sent.

The method that the present embodiment is provided, available for the technical scheme of executive mode embodiment one, specific implementation is similar with technique effect, repeats no more here.

Figure 13 is the structural representation of inventive network apparatus embodiments one, as shown in figure 13, the network equipment that the present embodiment is provided, including：First acquisition module 31, the second acquisition module 32, sending module 33.

Wherein, the first acquisition module 31, the business continuance information of each business carried for obtaining in PDN connections；

Second acquisition module 32, the business continuance information for PDN connections described in the business continuance acquisition of information according to each business carried in the PDN connections；

Sending module 33, the business continuance information for sending the PDN connections to mobile management entity MME.

In a kind of implementation, second acquisition module 32 specifically for：According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping connecting；If any one business in each business carried in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN connections keeps continuous for needs；If all business carried in the PDN connections need not all keep continuous, it is determined that the business continuance of the PDN connections is that need not keep continuous.

In another implementation, second acquisition module 32 specifically for：According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping continuous；If any one business in each business carried in the PDN connections needs the company of holding It is continuous, determine whether the PDN connections meet first operator's selection strategy；If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, it is determined that the business continuance of the PDN is that need not keep continuous.

When the network equipment is policy control Rulemaking entity PCRF, first acquisition module 31 includes：Receiving unit and determining unit, receiving unit are used for the Business Stream characteristic information for receiving each business that bag detection entity TDF is sent；Determining unit is used for the business continuance that each business is determined according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.The Business Stream characteristic information of each business includes：The five-tuple information of the business or the application layer message of the business.Here, the determining unit specifically for：According to the Business Stream characteristic information of each business, and prestore or the business continuance characteristic information of miscellaneous service type that is obtained from external data base determines the business continuance of each business.

In the present embodiment, the network equipment can for policy control Rulemaking entity PCRF, SGW,

PGW。

When the network equipment be body PCRF, first acquisition module 31 specifically for：The business continuance information for each business that bag detection entity TDF is sent is received, wherein, the business continuance information of each business is what the TDF was determined according to the Business Stream characteristic information of each business.

When the network equipment is PCRF, and it is that agreement between the packet data gateway PGW and gateway S-GW of UE service is packet radio service technology tunnel label GTP agreements；The sending module specifically for：The business continuance information of the PDN connections is sent to the MME by the PGW and S-GW.When the network equipment is policy control Rulemaking entity PCRF, and it is that agreement between the PGW and the S-GW of UE service is the 6th edition PMIPv6 agreement of proxy mobile internet protocol；The sending module 33 specifically for：The business continuance information of the PDN connections is sent to the MME by the S-GW.

As the PGW that the network equipment is UE service, second acquisition module 32 specifically for：The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；The sending module 33 specifically for：It is logical Cross the business continuance that the SGW serviced for the UE sends the PDN connections to the MME

^ I Ft from Θ,.

As the PGW that the network equipment is UE service, first acquisition module 31 specifically for：When there is new business to initiate in the PDN connections or at the end of, obtain the Business Stream characteristic information of each business；The business continuance of each business is determined according to the Business Stream characteristic information of each business, the business continuance information of each business is obtained.

As the SGW that the network equipment is UE service, first acquisition module 31 specifically for：The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business.

As the SGW that the network equipment is UE service, first acquisition module 31 specifically for：The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；Second acquisition module 32 includes：Carry continuity determining unit, judging unit and the continuity determining unit of PDN connections.

Wherein, continuity determining unit, the continuity for determining each carrying in the PDN connections according to the business continuance information of each business carried in the PDN connections are carried；Judging unit, for judging whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；The continuity determining unit of PDN connections, for determining whether the PDN connections need to keep continuous according to the judged result of the judging unit；If any one carrying in the PDN connections needs to keep continuous, the continuity determining unit of the PDN connections determines the business continuance of the PDN connections to need to keep continuous；If all carryings need not all keep continuous in the PDN connections, the continuity determining unit of the PDN connections determines the business continuance of the PDN connections to keep continuous.

In another implementation, judging unit, any one carrying for being determined in the carrying continuity determining unit in the PDN connections needs to keep consecutive hours, determines whether the PDN connections meet first operator's selection strategy；The continuity determining unit of PDN connections, for determining whether the PDN connections need to keep continuous according to the judged result of the judging unit；If the PDN connections meet first operator selection strategy, the continuity determining unit of the PDN connections determines the business continuance of the PDN to need to keep continuous；If in the PDN connections All carryings need not all keep continuous, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy,, then the continuity determining unit of the PDN connections business continuance of the PDN is determined to keep continuous.

In the present embodiment, in order to reduce the expense of the network equipment, the sending module specifically for：When determining that the business continuance of the PDN connections changes, the business continuance information of the PDN connections is sent to the MME.Or, just set up in the PDN connections, the specific business continuance information for sending the PDN connections to the MME after preset duration of the sending module.So as to reduce the transmission of the business continuance information of the PDN connections.

The method that the present embodiment is provided, available for the technical scheme for performing embodiment of the method two, specific implementation is similar with technique effect, repeats no more here.

Figure 14 is the structural representation of mobile management entity embodiment three of the present invention, as shown in figure 14, and the MME400 that the present embodiment is provided includes：Processor 41, receiver 43.Receiver 43 is connected by bus with processor 41.The MME that the present embodiment is provided can also include：Memory 42, wherein, the storage execute instruction of memory 42, when MME400 is run, communicates between processor 41 and memory 42, and processor 41 performs execute instruction and causes MME400 to perform the business continuance determination methods that the present invention is provided.

Wherein, receiver 43, the business continuance information of the packet data network PDN connections for obtaining user equipment (UE)；

Processor 41, for when trigger condition is met, determining whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；The trigger condition is any one in following condition：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

If it is not, then the processor 41 is that the UE selects new packet data gateway PGW, and indicate that the UE disconnects the connection with being the former PGW that the UE is serviced, and indicate that the UE sets up new PDN with the new PGW and is connected；

If so, then the processor 41 keeps the UE and the former PGW connection.

The receiver 43 specifically for：The business continuance information for the PDN connections that the network equipment is sent is received, wherein, the business continuance information of the PDN connections is determined by the network equipment according to the continuity information of each business carried in the PDN connections.The network equipment is plan Any one slightly in control Rulemaking entity PCRF, the former PGW, the gateway S-GW serviced for the UE.

When the network equipment is the PCRF, and agreement between the former PGW and the S-GW is when being general packet radio service technology tunnel label GTP agreements, the receiver 43 specifically for：Receive business continuance information of the PCRF by the former PGW and S-GW PDN connections sent.When the network equipment is the PCRF, and agreement between the former PGW and the S-GW is when being the 6th edition PMIPv6 agreement of proxy mobile internet protocol, the receiver 43 specifically for：Receive business continuance information of the PCRF by the S-GW PDN connections sent.

When the network equipment be the former PGW when, the receiver 43 specifically for：Receive business continuance information of the former PGW by the SGW PDN connections sent.When the network equipment is the S-GW of UE service, the receiver 43 specifically for：Receive the business continuance information for the PDN connections that the S-GW is sent.

In above-mentioned several ways, MME is the business continuance information for receiving the PDN connections that other network equipments are sent, certainly, MME oneself can also determine the business continuance information of the PDN connections, when MME oneself determines the business continuance information of the PDN connections, the receiver 43 specifically for：It is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of the UE services are sent.Then, receiver 43 obtains the business continuance information of the PDN connections according to the continuity information of each carrying in the PDN connections.

The business continuance information that receiver 43 obtains the PDN connections according to the continuity information of each carrying in the PDN connections is specially：Receiver 43 judges whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN is to need to keep continuous；If all carryings need not all keep continuous in the PDN connections, it is determined that the business continuance of the PDN is that need not keep continuous.

Or, the receiver 43 judges whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, Jin mono- Walk determine whether the PDN connections meet first operator's selection strategy；If the PDN connections meet first operator selection strategy, the MME determines the business continuance of the PDN to need to keep continuous；If the PDN All carryings need not all keep continuous in connection, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, then the MME determines the business continuance of the PDN to keep continuous.

The processor 41 is specifically for determining the need for selecting new PGW for UE in the following manner:Processor 41 obtains the corresponding each PGW of affiliated access points APN of former PDN connections relevant information, wherein, the corresponding each PGW of APN relevant information includes：Each PGW and UE range information, each PGW and UE Delay, the load information of each PGW；It is that the UE selects new PGW from each PGW according to the corresponding each PGW of APN relevant information and the UE actual demand.

Jin mono- Walk's, the MME that the present embodiment is provided can also include transmitter 44, transmitter 44, for sending DNS query request to domain name system server DNS, for inquiring about the corresponding each PGW information of the APN；The receiver 43 is additionally operable to：Receive the internet protocol address for each PGW that the DNS is sent；Accordingly, the processor 41 specifically for：Each PGW received according to the receiver IP address determines each PGW and the UE distance.In this mode, MME gets each PGW information at DNS, certainly, and the processor 41 can also inquire about the relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections from pre-configured database.

In the present embodiment, processor 41 for specific UE when selecting new PGW, it is also contemplated that operator's selection strategy, specifically：Processor 41 determines the need for selecting new PGW for the UE according to second operator's selection strategy.Second operator selection strategy is：When the PDN connections of the UE are in EPS connection management Idle state ECM-IDLE, new PGW is selected for the UE, or, all new PGW need not be selected when the PDN connections of the UE are under any state for the UE, or, select new PGW when the PDN connections of the UE need not keep business continuance for the UE.

The MME that the present embodiment is provided, available for the technical scheme for performing embodiment of the method one, specific implementation is similar with technique effect, repeats no more here.

Figure 15 is the structural representation of inventive network apparatus embodiments two, as shown in figure 15, and the network equipment 500 that the present embodiment is provided includes：Processor 51, receiver 53 and transmitter 54.Wherein, receiver 53 is connected with transmitter 54 by bus with processor 51.The network equipment 500 that the present embodiment is provided can also include：Memory 52, wherein, the storage execute instruction of memory 52 works as the network equipment During 500 operation, communicated between processor 51 and memory 52, processor 51 performs execute instruction and causes the network equipment 500 to perform the business continuance determination methods that the present invention is provided.

Receiver 53, the business continuance information of each business carried for obtaining in PDN connections；Processor 51:Business continuance information for PDN connections described in the business continuance acquisition of information according to each business carried in the PDN connections that the receiver is obtained；

Transmitter 54, the business continuance information for sending the PDN connections to mobile management entity MME.

In the present embodiment, processor 51 can obtain the business continuance information of the PDN connections by following two modes, first way, the processor 51 specifically for：According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping connecting；If any one business in each business carried in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN connections keeps continuous for needs；If all business carried in the PDN connections need not all keep continuous, it is determined that the business continuance of the PDN connections is that need not keep continuous.

The second way, processor 51 specifically for：According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping continuous；If any one business in each business carried in the PDN connections needs to keep continuous, determine whether the PDN connections meet first operator's selection strategy；If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, it is determined that the business continuance of the PDN is that need not keep continuous.

In the present embodiment, the network equipment can be PCRF, PGW and SGW.

When the network equipment is PCRF, the receiver 53 receives the Business Stream characteristic information for each business that bag detection entity TDF is sent；The business continuance of each business is determined according to the Business Stream characteristic information of each business, the business continuance information of each business is obtained.Wherein, the Business Stream characteristic information of each business includes：The five-tuple information of the business or the application layer message of the business.Or, the receiver is according to the Business Stream characteristic information of each business, and prestores or the business continuance characteristic information of miscellaneous service type that is obtained from external data base determines the business continuance of each business.In aforesaid way, PCRF believes according to the Business Stream feature of each business Cease the business continuance information for oneself determining each business, in other mode, bag detection entity TDF determines the business continuance information of each business, it is then sent to PCRF, the PCRF receiver 53 receives the business continuance information for each business that bag detection entity TDF is sent, wherein, the business continuance information of each business is what the TDF was determined according to the Business Stream characteristic information of each business.

When the network equipment is PCRF, and it is that agreement between the packet data gateway PGW and gateway S-GW of UE service is packet radio service technology tunnel label GTP agreements；Transmitter 54 specifically for：The business continuance information of the PDN connections is sent to the MME by the PGW and S-GW.When the network equipment is policy control Rulemaking entity PCRF, and it is that agreement between the PGW and the S-GW of UE service is the 6th edition PMIPv6 agreement of proxy mobile internet protocol；The transmitter 54 specifically for：The business continuance information of the PDN connections is sent to the MME by the S-GW.

As the PGW that the network equipment is UE service, the receiver 53 specifically for：The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；The transmitter specifically for：The business continuance information of the PDN connections is sent to the MME by the SGW serviced for the UE.Or, receiver 53 specifically for：When there is new business to initiate in the PDN connections or at the end of, the PGW obtains the Business Stream characteristic information of each business；The business continuance of each business is determined according to the Business Stream characteristic information of each business, the business continuance information of each business is obtained.

As the SGW that the network equipment is UE service, the receiver 53 specifically for：The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business.Or, receiver 53 receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；Accordingly, the processor 51 specifically for：The continuity of each carrying in the PDN connections is determined according to the business continuance information of each business carried in the PDN connections；Judge whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, it is determined that The business continuance of the PDN connections keeps continuous for needs；If all carryings need not all keep continuous in the PDN connections, it is determined that the business continuance of the PDN connections is that need not keep continuous.If processor 51 determines that any one carrying in the PDN connections needs to keep continuous, Jin mono- Walk, processor 51 determines whether the PDN connections meet first operator's selection strategy；If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, it is determined that the business continuance of the PDN is that need not keep continuous.

The Internet resources that the business continuance information of the PDN connections takes frequently are sent in order to reduce the network equipment to MME, when the transmitter 54 determines that the business continuance of the PDN connections changes, the business continuance information of the PDN connections is just sent to the MME.Or, when the PDN connections are just set up, the transmitter 54 sends the business continuance information of the PDN connections to the MME after preset duration.

The network equipment that the present embodiment is provided, available for the technical scheme for performing embodiment of the method two, specific implementation is similar with technique effect, repeats no more here.

One of ordinary skill in the art will appreciate that：Realize that above method embodiment full portions or Bu Fen Walk can be completed by the related hardware of programmed instruction suddenly, foregoing program can be stored in a computer read/write memory medium, upon execution, it is rapid that execution includes above method embodiment Walk to the program；And foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.

Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part or all technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.

Claims

Claims

1st, a kind of processing method of business continuance, it is characterised in that including：

Mobility management entity MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE)；

When trigger condition is met, the MME determines whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；

If it is not, then the MME is that the UE selects new packet data gateway PGW, and indicate that the UE disconnects the connection with being the former PGW that the UE is serviced, and indicate that the UE sets up new PDN with the new PGW and is connected；

If so, then the MME keeps the UE and former PGW connection.

2nd, the method according to claim 1, it is characterised in that the mobility management entity MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE), including：

The MME receives the business continuance information for the PDN connections that the network equipment is sent, wherein, the business continuance information of the PDN connections is determined by the network equipment according to the continuity information of each business carried in the PDN connections.

3rd, method according to claim 2, it is characterised in that the network equipment is policy control Rulemaking entity PCRF, the former PGW, be the UE services gateway S-GW in any one.

4th, the method according to claim 3, it is characterized in that, when the network equipment is the PCRF, and the agreement between the former PGW and the S-GW be general packet radio service technology tunnel label GTP agreements when, the MME receives the business continuance information for the PDN connections that the network equipment is sent, including：

The MME receives business continuance information of the PCRF by the former PGW and S-GW PDN connections sent.

5th, the method according to claim 3, it is characterized in that, when the network equipment is the PCRF, and the agreement between the former PGW and the S-GW be the 6th edition PMIPv6 agreement of proxy mobile internet protocol when, the MME receives the business continuance information for the PDN connections that the network equipment is sent, including：

The MME receives the industry that the PCRF passes through the S-GW PDN connections sent Business continuity information.

6th, the method according to claim 3, it is characterised in that when the network equipment is the former PGW, the MME receives the business continuance information for the PDN connections that the network equipment is sent, including：

The MME receives the business continuance information that the former PGW passes through the SGW PDN connections sent.

7th, the method according to claim 3, it is characterised in that when the network equipment is the S-GW of the UE services, the MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE), including：

The MME receives the business continuance information for the PDN connections that the S-GW is sent.

8th, the method according to claim 1, it is characterised in that the mobility management entity MME obtains the business continuance information of the packet data network PDN connections of user equipment (UE), including：

The MME obtains the continuity information of each carrying in the PDN connections, and the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections.

9th, method according to claim 8, it is characterized in that, the MME obtains the continuity information of each carrying in the PDN connections, and the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections, including：

The MME obtains the continuity information of each carrying in the PDN connections, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, the MME determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, the MME determines the business continuance of the PDN to keep continuous.

10th, method according to claim 8, it is characterized in that, the MME obtains the continuity information of each carrying in the PDN connections, and the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections, including：

The MME obtains the continuity information of each carrying in the PDN connections, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for protecting in the PDN connections Hold continuous；

If any one carrying in the PDN connections needs to keep continuous, the MME determines whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, the MME determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, then the MME determines the business continuance of the PDN to keep continuous.

11st, the method according to any one of claim 8-10, it is characterised in that the MME obtains the continuity information of each carrying in the PDN connections, including：

The MME is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of the UE services are sent.

12nd, the method according to claim any one of 1-11, it is characterised in that the trigger condition is any one in following condition：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

13rd, the method according to claim any one of 1-11, it is characterised in that the MME is that the UE selects new packet data gateway PGW, including：

The affiliated access points APN that the MME obtains the former PDN connections is corresponding each

PGW relevant information, wherein, the corresponding each PGW of APN relevant information includes：Each PGW and UE range information, each PGW and UE Delay, the load information of each PGW；

The MME is that the UE selects new PGW from each PGW according to the corresponding each PGW of APN relevant information and the actual demand of the UE.

14th, method according to claim 13, it is characterised in that the MME obtains the range information of the corresponding each PGW of access points APN and the UE belonging to the former PDN connections, including：

The MME sends DNS query request to domain name system server DNS, for inquiring about the corresponding each PGW information of the APN； The MME receives the internet protocol address for each PGW that the DNS is sent, the MME according to the IP address of each PGW determine each PGW and UE away from

15th, method according to claim 13, it is characterised in that the MME obtains the relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections, including：The MME inquires about the relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections from pre-configured database.

16th, according to the method described in claim 1, it is characterised in that the MME is that the UE selects new packet data gateway PGW, including：

The MME determines the need for selecting new for the UE according to second operator's selection strategy

PGW。

17th, method according to claim 16, it is characterised in that second operator selection strategy is：When the PDN connections of the UE are in EPS Connection Management Idle state ECM-IDLE, new PGW is selected for the UE, or, all new PGW need not be selected when the PDN connections of the UE are under any state for the UE, or, select new PGW when the PDN connections of the UE need not keep business continuance for the UE.

18th, a kind of processing method of business continuance, it is characterised in that including：

The network equipment obtains the business continuance information of each business carried in PDN connections；The business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections；

The network equipment sends the business continuance of the PDN connections to mobile management entity MME

^ I Ft from Θ,.

19th, method according to claim 18, it is characterised in that the business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections, including：

The network equipment judges whether each business is required for keeping connecting according to the business continuance information of each business carried in the PDN connections；

If any one business in each business carried in the PDN connections needs to keep continuous, the network equipment determines the business continuance of the PDN connections to need to keep continuous；

If all business carried in the PDN connections need not all keep continuous, the net Network equipment determines the business continuance of the PDN connections to keep continuous.

20th, the method according to claim requirement 18, it is characterised in that the business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections, including：

The network equipment judges whether each business is required for keeping continuous according to the business continuance information of each business carried in the PDN connections；

If any one business in each business carried in the PDN connections needs to keep continuous, the network equipment determines whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, the network equipment determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, then the network equipment determines the business continuance of the PDN to keep continuous.

21st, the method according to any one of claim 18-20, it is characterised in that the network equipment is policy control Rulemaking entity PCRF, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The PCRF receives the Business Stream characteristic information for each business that bag detection entity TDF is sent；The PCRF determines the business continuance of each business according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.

22nd, the method according to claim 21, it is characterised in that the Business Stream characteristic information of each business includes：The five-tuple information of the business or the application layer message of the business.

23rd, the method according to claim 21 or 22, it is characterised in that the PCRF determines the business continuance of each business according to the Business Stream characteristic information of each business, including：The PCRF is according to the Business Stream characteristic information of each business, and prestores or the business continuance characteristic information of miscellaneous service type that is obtained from external data base determines the business continuance of each business.

24th, the method according to claim any one of 18-20, it is characterised in that the network equipment is policy control Rulemaking entity PCRF, the network equipment obtains the business continuance information of each business carried in PDN connections, including： The PCRF receives the business continuance information for each business that bag detection entity TDF is sent, wherein, the business continuance information of each business is what the TDF was determined according to the Business Stream characteristic information of each business.

25th, the method according to claim any one of 18-24, it is characterised in that the network equipment is policy control Rulemaking entity PCRF, and be the packet data gateway of UE services

Agreement between PGW and gateway S-GW is packet radio service technology tunnel label GTP agreements；

The network equipment sends the business continuance information of the PDN connections to mobile management entity MME, including：

The PCRF sends the business continuance information of the PDN connections by the PGW and S-GW to the MME.

26th, the method according to claim any one of 18-24, it is characterized in that, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the PGW and the S-GW of UE service is the 6th edition PMIPv6 agreement of proxy mobile internet protocol；

The network equipment sends the business continuance information of the PDN connections to mobile management entity MME, including：

The PCRF sends the business continuance information of the PDN connections by the S-GW to the MME.

27th, the method according to claim any one of 18-20, it is characterised in that the network equipment is the PGW of the UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The PGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The network equipment sends the business continuance information of the PDN connections to mobile management entity MME, including：

The PGW sends the business continuance information of the PDN connections by the SGW serviced for the UE to the MME.

28th, what is carried in the method according to claim any one of 18-20, it is characterised in that the network equipment is the PGW that the UE is serviced, the network equipment acquisition PDN connections is each The business continuance information of business, including：

When there is new business to initiate in the PDN connections or at the end of, the PGW obtains the Business Stream characteristic information of each business；

The PGW determines the business continuance of each business according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.

29th, the method according to claim any one of 18-20, it is characterised in that the network equipment is the SGW of the UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The SGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business.

30th, method according to claim 18, it is characterised in that the network equipment is the SGW of the UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, including：

The SGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections, including：

The SGW determines the continuity of each carrying in the PDN connections according to the business continuance information of each business carried in the PDN connections；

The SGW judges whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, the SGW determines the business continuance of the PDN connections to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, the SGW determines the business continuance of the PDN connections to keep continuous.

31st, method according to claim 18, it is characterised in that the network equipment is the SGW of the UE services, the network equipment obtains the business continuance information of each business carried in PDN connections, including： SGW receives the business continuance information of each business carried in the PDN connections that PCRF is sent, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The business continuance information of network equipment PDN connections according to the business continuance acquisition of information of each business carried in the PDN connections, including：

The SGW determines the continuity of each carrying in the PDN connections according to the business continuance information of each business carried in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, the SGW determines whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, the SGW determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, then the SGW determines the business continuance of the PDN to keep continuous.

32nd, method according to claim 18, it is characterised in that the network equipment sends the business continuance information of the PDN connections to mobile management entity MME, including：

The network equipment determines that the business continuance of the PDN connections changes, and the network equipment sends the business continuance information of the PDN connections to the MME.

33rd, method according to claim 18, it is characterised in that if PDN connections are just set up, the network equipment sends the business continuance information of the PDN connections to mobile management entity MME, including：

The network equipment sends the business continuance information of the PDN connections to the MME after preset duration.

34th, a kind of mobile management entity MME, it is characterised in that including：

Acquisition module 12, the business continuance information of the packet data network PDN connections for obtaining user equipment (UE)；

Determining module, for when trigger condition is met, determining whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；

Gateway selecting module, for being the UE when the judged result of the determining module is to be New packet data gateway PGW is selected, and indicates that the UE disconnects the connection with the former PGW for UE services, and indicates that the UE sets up new PDN with the new PGW and is connected；

Connection keeps module, for when the judged result of the determining module is no, keeping the UE and former PGW connection.

35th, MME according to claim 34, it is characterised in that the acquisition module specifically for：The business continuance information for the PDN connections that the network equipment is sent is received, wherein, the business continuance information of the PDN connections is determined by the network equipment according to the continuity information of each business carried in the PDN connections.

36th, MME according to claim 35, it is characterised in that the network equipment is policy control Rulemaking entity PCRF, the former PGW, is the gateway of the UE services

Any one in S-GW.

37th, MME according to claim 36, it is characterized in that, when the network equipment is the PCRF, and agreement between the former PGW and the S-GW is when being general packet radio service technology tunnel label GTP agreements, the acquisition module specifically for：

Receive business continuance information of the PCRF by the former PGW and S-GW PDN connections sent.

38th, MME according to claim 36, it is characterized in that, when the network equipment is the PCRF, and agreement between the former PGW and the S-GW is when being the 6th edition PMIPv6 agreement of proxy mobile internet protocol, the acquisition module specifically for：

Receive business continuances of the PCRF by the S-GW PDN connections sent

^ I Ft from Θ,.

39th, MME according to claim 36, it is characterised in that when the network equipment be the former PGW when, the acquisition module specifically for：

Receive business continuance information of the former PGW by the SGW PDN connections sent.

40th, MME according to claim 36, it is characterised in that when the network equipment is the S-GW of UE service, the acquisition module specifically for：

Receive the business continuance information for the PDN connections that the S-GW is sent.

41st, MME according to claim 34, it is characterised in that the determining module specifically for： The continuity information of each carrying in the PDN connections is obtained, the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections.

42nd, MME according to claim 41, it is characterised in that the determining module specifically for：

The continuity information of each carrying in the PDN connections is obtained, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN is to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, it is determined that the business continuance of the PDN is that need not keep continuous.

43rd, MME according to claim 41, it is characterised in that the determining module specifically for：

The continuity information of each carrying in the PDN connections is obtained, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, determine whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, it is determined that the business continuance of the PDN is that need not keep continuous.

44th, the MME according to any one of claim 41-43, it is characterised in that the determining module specifically for：

It is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of the UE services are sent.

45th, the MME according to any one of claim 33-44, it is characterised in that the trigger condition is any one in following condition：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

46th, the MME according to any one of claim 33-44, it is characterised in that described Gateway selecting module includes：

Acquiring unit, the relevant information for obtaining the corresponding each PGW of access points APN belonging to the former PDN connections, wherein, the corresponding each PGW of APN relevant information includes：Each PGW and UE range information, each PGW and UE Delay, the load information of each PGW；

Determining unit, is that the UE selects new PGW from each PGW for the relevant information according to the corresponding each PGW of the APN and the actual demand of the UE.

47th, MME according to claim 46, it is characterised in that the acquiring unit specifically for：

DNS query request is sent to domain name system server DNS, for inquiring about the corresponding each PGW information of the APN；

The internet protocol address for each PGW that the DNS is sent is received, each PGW and the UE distance are determined according to the IP address of each PGW.

48th, MME according to claim 46, it is characterised in that the acquiring unit specifically for：

The relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections is inquired about from pre-configured database.

49th, MME according to claim 34, it is characterised in that the gateway selecting module specifically for：

Determined the need for selecting new PGW for the UE according to second operator's selection strategy.

50th, MME according to claim 49, it is characterised in that second operator selection strategy is：When the PDN connections of the UE are in EPS Connection Management Idle state ECM-IDLE states, new PGW is selected for the UE, or, all new PGW need not be selected when the PDN connections of the UE are under any state for the UE, or, select new PGW when the PDN connections of the UE need not keep business continuance for the UE.

51st, a kind of network equipment, it is characterised in that including：

First acquisition module, the business continuance information of each business carried for obtaining in PDN connections；

Second acquisition module, the business continuance information for PDN connections described in the business continuance acquisition of information according to each business carried in the PDN connections； Sending module, the business continuance information for sending the PDN connections to mobile management entity MME.

52nd, the network equipment according to claim 51, it is characterised in that second acquisition module specifically for：

According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping connecting；

If any one business in each business carried in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN connections keeps continuous for needs；

If all business carried in the PDN connections need not all keep continuous, it is determined that the business continuance of the PDN connections is that need not keep continuous.

53rd, the network equipment according to claim 51, it is characterised in that second acquisition module specifically for：

According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping continuous；

If any one business in each business carried in the PDN connections needs to keep continuous, determine whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, it is determined that the business continuance of the PDN is that need not keep continuous.

54th, the network equipment according to any one of claim 51-53, it is characterised in that the network equipment is policy control Rulemaking entity PCRF, first acquisition module includes：Receiving unit, the Business Stream characteristic information for receiving each business that bag detection entity TDF is sent；

Determining unit, the business continuance for determining each business according to the Business Stream characteristic information of each business, obtains the business continuance information of each business.

55th, the network equipment according to claim 54, it is characterised in that the Business Stream characteristic information of each business includes：The five-tuple information of the business or the application layer message of the business.

56th, the network equipment according to claim 54 or 55, it is characterised in that the determination Unit specifically for：

According to the Business Stream characteristic information of each business, and prestore or the business continuance characteristic information of miscellaneous service type that is obtained from external data base determines the business continuance of each business.

57th, the network equipment according to any one of claim 51-53, it is characterised in that the network equipment be policy control Rulemaking entity PCRF, first acquisition module specifically for：The business continuance information for each business that bag detection entity TDF is sent is received, wherein, the business continuance information of each business is what the TDF was determined according to the Business Stream characteristic information of each business.

58th, the network equipment according to any one of claim 51-57, it is characterized in that, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the packet data gateway PGW and gateway S-GW of UE service is packet radio service technology tunnel label GTP agreements；

The sending module specifically for：The business continuance information of the PDN connections is sent to the MME by the PGW and S-GW.

59th, the network equipment according to any one of claim 51-57, it is characterized in that, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the PGW and the S-GW of UE service is the 6th edition PMIPv6 agreement of proxy mobile internet protocol；

The sending module specifically for：The business continuance information of the PDN connections is sent to the MME by the S-GW.

60th, the network equipment according to any one of claim 51-53, it is characterised in that the network equipment is the PGW of UE service, second acquisition module specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The sending module specifically for：The business continuance information of the PDN connections is sent to the MME by the SGW serviced for the UE.

61st, the network equipment according to any one of claim 51-53, it is characterised in that the network equipment is the PGW of UE service, first acquisition module specifically for：

When there is new business to initiate in the PDN connections or at the end of, obtain each business Business Stream characteristic information；

The business continuance of each business is determined according to the Business Stream characteristic information of each business, the business continuance information of each business is obtained.

62nd, the network equipment according to any one of claim 51-53, it is characterised in that the network equipment is the SGW of UE service, first acquisition module specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business.

63rd, the network equipment according to claim 51, it is characterised in that the network equipment is the SGW of UE service, first acquisition module specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

Second acquisition module includes：

Carry continuity determining unit, the continuity for determining each carrying in the PDN connections according to the business continuance information of each business carried in the PDN connections；

Judging unit, for judging whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；

The continuity determining unit of PDN connections, for determining whether the PDN connections need to keep continuous according to the judged result of the judging unit；

If any one carrying in the PDN connections needs to keep continuous, the continuity determining unit of the PDN connections determines the business continuance of the PDN connections to need to keep continuous；If all carryings need not all keep continuous in the PDN connections, the continuity determining unit of the PDN connections determines the business continuance of the PDN connections to keep continuous.

64th, the network equipment according to claim 51, it is characterised in that the network equipment is the SGW of UE service, first acquisition module specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

Second acquisition module includes： Carry continuity determining unit, the continuity for determining each carrying in the PDN connections according to the business continuance information of each business carried in the PDN connections；

Judging unit, any one carrying for being determined in the carrying continuity determining unit in the PDN connections needs to keep consecutive hours, determines whether the PDN connections meet first operator's selection strategy；

The continuity determining unit of PDN connections, for determining whether the PDN connections need to keep continuous according to the judged result of the judging unit；

If the PDN connections meet first operator selection strategy, the continuity determining unit of the PDN connections determines the business continuance of the PDN to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy,, then the continuity determining unit of the PDN connections business continuance of the PDN is determined to keep continuous.

65th, the network equipment according to claim 51, it is characterised in that the sending module specifically for：

When determining that the business continuance of the PDN connections changes, the business continuance information of the PDN connections is sent to the MME.

66th, the network equipment according to claim 51, it is characterised in that if PDN connections just set up, the sending module specifically for：

After preset duration, the business continuance information of the PDN connections is sent to the MME.

67th, a kind of mobility management entity MME, it is characterised in that including：

Receiver, the business continuance information of the packet data network PDN connections for obtaining user equipment (UE)；

Processor, for when trigger condition is met, determining whether the PDN connections need to keep business continuity according to the business continuance information of the PDN connections；

If it is not, then the processor is that the UE selects new packet data gateway PGW, and indicate that the UE disconnects the connection with being the former PGW that the UE is serviced, and indicate that the UE sets up new PDN with the new PGW and is connected；

If so, then the processor keeps the UE and former PGW connection.

68th, MME according to claim 67, it is characterised in that the reception implement body is used In：

The business continuance information for the PDN connections that the network equipment is sent is received, wherein, the business continuance information of the PDN connections is determined by the network equipment according to the continuity information of each business carried in the PDN connections.

69th, MME according to claim 68, it is characterised in that the network equipment is policy control Rulemaking entity PCRF, the former PGW, be the UE services gateway S-GW in any one.

70th, MME according to claim 69, it is characterized in that, when the network equipment is the PCRF, and agreement between the former PGW and the S-GW is when being general packet radio service technology tunnel label GTP agreements, the receiver specifically for：

Receive business continuance information of the PCRF by the former PGW and S-GW PDN connections sent.

71st, MME according to claim 69, it is characterized in that, when the network equipment is the PCRF, and agreement between the former PGW and the S-GW is when being the 6th edition PMIPv6 agreement of proxy mobile internet protocol, the receiver specifically for：

Receive business continuances of the PCRF by the S-GW PDN connections sent

^ I Ft from Θ,.

72nd, MME according to claim 69, it is characterised in that when the network equipment be the former PGW when, the receiver specifically for：

Receive business continuances of the former PGW by the SGW PDN connections sent

^ I Ft from Θ,.

73rd, MME according to claim 69, it is characterised in that when the network equipment is the S-GW of UE service, the receiver specifically for：

Receive the business continuance information for the PDN connections that the S-GW is sent.

74th, MME according to claim 67, it is characterised in that the receiver specifically for：

The continuity information of each carrying in the PDN connections is obtained, the business continuance information of the PDN connections is obtained according to the continuity information of each carrying in the PDN connections.

75th, the MME according to claim 74, it is characterised in that the receiver specifically for： The continuity information of each carrying in the PDN connections is obtained, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN is to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, it is determined that the business continuance of the PDN is that need not keep continuous.

76th, the MME according to claim 74, it is characterised in that the receiver specifically for：

The continuity information of each carrying in the PDN connections is obtained, according to the continuity information of each carrying in the PDN connections, judges whether each carrying is required for keeping continuous in the PDN connections；If any one carrying in the PDN connections needs to keep continuous, the MME determines whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, then the MME determines the business continuance of the PDN to keep continuous.

77th, the MME according to any one of claim 74-76, it is characterised in that the receiver specifically for：

It is received as the continuity information of each carrying in the PDN connections that the SGW or PGW of the UE services are sent.

78th, the MME according to any one of claim 67-77, it is characterised in that the trigger condition is any one in following condition：The deletion that the generation of mobile management event, new business initiation, original service ending, the establishment of the grouping system EPS carryings of evolution, the modification of EPS carryings and EPS are carried.

79th, the MME according to any one of claim 67-77, it is characterised in that the processor specifically for：

The corresponding each PGW of affiliated access points APN of former PDN connections relevant information is obtained, wherein, the corresponding each PGW of APN relevant information includes：Each PGW Delay, the load information of each PGW of range information, each PGW and the UE with the UE；

It is that the UE selects new PGW from each PGW according to the corresponding each PGW of APN relevant information and the UE actual demand.

80th, the MME according to claim 79, it is characterised in that also include：

Transmitter, for sending DNS query request to domain name system server DNS, for inquiring about the corresponding each PGW information of the APN；

The receiver is additionally operable to：Receive the internet protocol address for each PGW that the DNS is sent；

The processor specifically for：Each PGW received according to the receiver IP address determines each PGW and the UE distance.

81st, the MME according to claim 79, it is characterised in that the processor specifically for：

The relevant information of the corresponding each PGW of access points APN belonging to the former PDN connections is inquired about from pre-configured database.

82nd, MME according to claim 67, it is characterised in that the processor specifically for：

Determined the need for selecting new PGW for the UE according to second operator's selection strategy.

83rd, the MME according to claim 82, it is characterised in that second operator selection strategy is：When the PDN connections of the UE are in EPS Connection Management Idle state ECM-IDLE, new PGW is selected for the UE, or, all new PGW need not be selected when the PDN connections of the UE are under any state for the UE, or, select new PGW when the PDN connections of the UE need not keep business continuance for the UE.

84th, a kind of network equipment, it is characterised in that including：

Receiver, the business continuance information of each business carried for obtaining in PDN connections；Processor：Business continuance information for PDN connections described in the business continuance acquisition of information according to each business carried in the PDN connections that the receiver is obtained；

Transmitter, the business continuance for sending the PDN connections to mobile management entity MME

^ I Ft from Θ,.

85th, the network equipment according to claim 84, it is characterised in that the processing utensil Body is used for：

According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping connecting；

If any one business in each business carried in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN connections keeps continuous for needs；

If all business carried in the PDN connections need not all keep continuous, it is determined that the business continuance of the PDN connections is that need not keep continuous.

86th, the network equipment according to claim 84, it is characterised in that the processor specifically for：

According to the business continuance information of each business carried in the PDN connections, judge whether each business is required for keeping continuous；

If any one business in each business carried in the PDN connections needs to keep continuous, determine whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but the PDN connections are unsatisfactory for first operator selection strategy, it is determined that the business continuance of the PDN is that need not keep continuous.

87th, the network equipment according to any one of claim 84-86, it is characterised in that the network equipment be policy control Rulemaking entity PCRF, the receiver specifically for：

Receive the Business Stream characteristic information for each business that bag detection entity TDF is sent；

The business continuance of each business is determined according to the Business Stream characteristic information of each business, the business continuance information of each business is obtained.

88th, the network equipment according to claim 87, it is characterised in that the Business Stream characteristic information of each business includes：The five-tuple information of the business or the application layer message of the business.

89th, the network equipment according to claim 87 or 88, it is characterised in that the receiver specifically for：

According to the Business Stream characteristic information of each business, and prestore or the business continuance characteristic information of miscellaneous service type that is obtained from external data base determines the business continuance of each business. 90th, the network equipment according to any one of claim 84-86, it is characterised in that the network equipment be policy control Rulemaking entity PCRF, the receiver specifically for：

The business continuance information for each business that bag detection entity TDF is sent is received, wherein, the business continuance information of each business is what the TDF was determined according to the Business Stream characteristic information of each business.

91st, the network equipment according to any one of claim 84-86, it is characterized in that, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the packet data gateway PGW and gateway S-GW of UE service is packet radio service technology tunnel label GTP agreements；

The transmitter specifically for：The business continuance information of the PDN connections is sent to the MME by the PGW and S-GW.

92nd, the network equipment according to any one of claim 84-86, it is characterized in that, the network equipment is policy control Rulemaking entity PCRF, and is that agreement between the PGW and the S-GW of UE service is the 6th edition PMIPv6 agreement of proxy mobile internet protocol；

The transmitter specifically for：The business continuance information of the PDN connections is sent to the MME by the S-GW.

93rd, the network equipment according to any one of claim 84-86, it is characterised in that the network equipment is the PGW of UE service, the receiver specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The transmitter specifically for：The business continuance information of the PDN connections is sent to the MME by the SGW serviced for the UE.

94th, the network equipment according to any one of claim 84-86, it is characterised in that the network equipment is the PGW of UE service, the receiver specifically for：

When there is new business to initiate in the PDN connections or at the end of, the PGW obtains the Business Stream characteristic information of each business；

The business continuance of each business is determined according to the Business Stream characteristic information of each business, the business continuance information of each business is obtained.

95th, the network equipment according to any one of claim 84-86, it is characterised in that institute State the SGW that the network equipment is UE service, the receiver specifically for：The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business.

96th, the network equipment according to claim 84, it is characterised in that the network equipment is the SGW of UE service, the receiver specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The processor specifically for：The continuity of each carrying in the PDN connections is determined according to the business continuance information of each business carried in the PDN connections；

Judge whether each carrying is required for keeping continuous in the PDN connections according to the continuity information of each carrying in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, it is determined that the business continuance of the PDN connections is to need to keep continuous；

If all carryings need not all keep continuous in the PDN connections, it is determined that the business continuance of the PDN connections is that need not keep continuous.

97th, the network equipment according to claim 84, it is characterised in that the network equipment is the SGW of UE service, the receiver specifically for：

The business continuance information of each business carried in the PDN connections that PCRF is sent is received, wherein, the business continuance of each business carried in the PDN connections is determined by the PCRF according to the Business Stream characteristic information of each business；

The processor specifically for：The continuity of each carrying in the PDN connections is determined according to the business continuance information of each business carried in the PDN connections；

If any one carrying in the PDN connections needs to keep continuous, determine whether the PDN connections meet first operator's selection strategy；

If the PDN connections meet first operator selection strategy, it is determined that the business continuance of the PDN keeps continuous for needs；

If all carryings need not all keep continuous in the PDN connections, or any one carrying in the PDN connections needs to keep continuous, but PDN connections are unsatisfactory for described first Operator's selection strategy, it is determined that the business continuance of the PDN is that need not keep continuous.

98th, the network equipment according to claim 84, it is characterised in that the transmitter specifically for：

When determining that the business continuance of the PDN connections changes, the business continuance information of the PDN connections is sent to the MME.

99th, the network equipment according to claim 84, it is characterised in that if PDN connections just set up, the transmitter specifically for：

After preset duration, the business continuance information of the PDN connections is sent to the MME.