CN101227352B

CN101227352B - System and method for accessing network of subscriber terminal emergently to login IP connection

Info

Publication number: CN101227352B
Application number: CN2007100009699A
Authority: CN
Inventors: 吴问付
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-01-15
Filing date: 2007-01-15
Publication date: 2011-02-09
Anticipated expiration: 2027-01-15
Also published as: CN101227352A; WO2008086754A1

Abstract

An implementing case of the invention discloses a method for emergently registering user terminal (UE) to an IP connection access network (IP-CAN), the method comprises utilizing UE to send emergency log-on request information to the side network element of a network of the IP-CAN network, when side network element of a network in the IP-CAN network receives emergency log-on request information from UE, receiving the emergency log-on request and establishing emergency load-bearing which is corresponded with the emergency log-on request. The implementing case of the invention also discloses a method for emergently registering UE to systems of the IP-CAN network and network side first network element and network side second network element. UE can be led to simultaneously establish IMS emergency business load-bearing when UE is emergently registered to the IP-CAN network by utilizing the invention, thereby reducing time delay and information interaction of emergency load-bearing establishing in the IP-CAN network.

Description

The method and system of accessing network of subscriber terminal emergently to login IP connection

Technical field

The present invention relates to internet multimedia subsystem (IMS:IP Multimedia Subsystem) urgency traffic technology, be particularly related to the method and system that user terminal (UE, User Equipment) emergently to login IP connects access network (IP-CAN:IP-Connectivity Access Network).

Background technology

The IMS urgency traffic utilizes IP-CAN and IMS system to provide urgency traffic for the user exactly, as 110 alert service, 119 fire alarm business etc.Set up request when UE detects emergent session, dialed 110 o'clock, in emergently to login IP-CAN network, set up the employed carrying of IMS urgency traffic then as the user.The IP-CAN network can comprise: General Packet Radio System (GPRS, Global PacketRadio System), universal mobile telecommunications system (UMTS, Universal MobileTelecommunication System) and other mobile communications networks such as System Architecture Evolution (SAE, System ArchitectureEvolution) network.Be example with the GPRS network below, the flow process that realizes the IMS urgency traffic in the prior art is described.

Fig. 1 is the method flow schematic diagram that the UE Emmergency log-on arrives GPRS network in the prior art.Referring to Fig. 1, global system for mobile communications wireless access network/enhanced data rates for gsm evolution technology (GERAN, GSM/EDGE Radio Access Network) and universal land radio access web (UTRAN, UMTS Territorial Radio Access Network) be the wireless access part in the GPRS network, universal grouping wireless business supporting node (SGSN, Serving GPRS SupportingNode) is used to realize routing forwarding, mobile management, functions such as session management and user profile storage, ggsn (GGSN, Gateway GPRS Supporting Node) is the interface of GPRS network and external network, also is responsible for realizing the transmission of user face data simultaneously.For the IMS urgency traffic, even owing to do not have Subscriber Identity Module (SIM among the UE, Subscriber IdentifierMoudle) card, also must allow it to use the IMS urgency traffic, therefore, in IMS Emmergency log-on process, need not authentication, also need not to obtain subscription data in the attaching position register (HLR, Home LocationRegister) of UE.Method shown in Figure 1 be may further comprise the steps by third generation partner program (3GPP, Third Generation Partnership Project) TR23.867 agreement regulation:

Step 101:UE sends Attach Request message to SGSN, carries urgent indicating bit in the message, is the Emmergency log-on request to represent this request.

Step 102:SGSN accepts the emergency attached request of UE, and sends to adhere to UE and accept message.

Step 103:UE receives to adhere to and accepts after the message, sends to adhere to SGSN and finishes message.

After 103, finish UE through above-mentioned steps 101 to the emergency attached of GPRS network, below UE initiate emergency bearing to GPRS network and set up request, to finish the foundation of emergency bearing.

Step 104:UE sends to SGSN and activates packet data protocol (PDP) context request message, carries the special-purpose urgent Access Point Name (globally dedicated emergency AccessPoint Name) of the overall situation in the message, and indication SGSN sets up emergency bearing.

Step 105:SGSN creates the employed PDP Context of IMS urgency traffic, and sends establishment PDP Context request message to GGSN, carries the special-purpose urgent APN of the overall situation in the message, the employed PDP Context of indication GGSN establishment IMS urgency traffic.

In this step, the employed PDP Context of IMS urgency traffic is called urgent PDP Context.

Step 106:GGSN creates urgent PDP Context after receiving the establishment PDP Context request message that carries the special-purpose urgent APN of the overall situation, and returns establishment PDP Context response message to SGSN.

Step 107:SGSN initiates radio bearer to GERAN/UTRAN and sets up, and sets up radio bearer.

Step 108 is to 109: after radio bearer is set up, if service quality (QoS, Quality ofService) parameter changes, then SGSN sends to GGSN and revises the PDP Context request message, GGSN returns and revises the PDP Context response message to SGSN, if qos parameter does not change, then can omit step 108 and 109, so shown in broken lines among the figure.

Step 110:SGSN sends the activation PDP Context to UE and accepts message.

So far, finish in the prior art UE Emmergency log-on to the method flow of GPRS network.

Because, when UE initiates emergency attached, mean that this UE can only carry out the IMS urgency traffic, and correspondingly, UE only just can initiate the emergency attached flow process when carrying out the IMS urgency traffic, therefore, UE initiates after the emergency attached, must create emergency bearing for this UE.And by flow process shown in Figure 1 as seen, UE emergency attached and emergency bearing are created respectively in step 101 to 103 in the prior art, and step 104 realizes that to 108 these twice message interaction process cause the time delay that emergency bearing is created in the GPRS network bigger, message interaction process is loaded down with trivial details.

As seen from the above analysis, create the carrying of IMS urgency traffic when the technical scheme of existing UE emergently to login IP-CAN network can not make UE emergently to login IP-CAN network, the time delay that causes emergency bearing to be created is bigger, and message interaction process is loaded down with trivial details.

Summary of the invention

In view of this, in the method for the disclosed UE emergently to login IP of the embodiment of the invention-CAN network, create the method for IMS urgency traffic carrying when a kind of UE of making emergently to login IP-CAN network is provided, shortened the time delay of creating emergency bearing.

In the system of the disclosed UE emergently to login IP of the embodiment of the invention-CAN network, create the system of IMS urgency traffic carrying when a kind of UE of making emergently to login IP-CAN network is provided, shortened the time delay of creating emergency bearing.

The embodiment of the invention is disclosed to be applicable to network side first network element in the system of UE emergently to login IP-CAN network, create network side first network element of IMS urgency traffic carrying when a kind of UE of making emergently to login IP-CAN network is provided, shortened the time delay of creating emergency bearing.

The embodiment of the invention is disclosed to be applicable to network side second network element in the system of UE emergently to login IP-CAN network, create network side second network element of IMS urgency traffic carrying when a kind of UE of making emergently to login IP-CAN network is provided, shortened the time delay of creating emergency bearing.

For achieving the above object, the technical scheme of the embodiment of the invention specifically is achieved in that

A kind of user terminal UE emergently to login IP is communicated with the method for access network IP-CAN, and this method may further comprise the steps:

The network side network element of UE in the IP-CAN network sends the Emmergency log-on request message;

When the network side network element in the IP-CAN network receives the Emmergency log-on request message of UE, create and the corresponding emergency bearing of described Emmergency log-on request.

The system of a kind of UE emergently to login IP-CAN network, this system comprises the network side network element in UE and the IP-CAN network,

Described UE is used for sending the Emmergency log-on request message to described network side network element;

Described network side network element is used for creating emergency bearing according to the Emmergency log-on request message that comes from described UE.

A kind of network side first network element is used for the system of UE emergently to login IP-CAN network, and this network side first network element comprises first interface module and the first load creating module,

Described first interface module, the Emmergency log-on request message that is used for coming from UE sends to the described first load creating module;

The described first load creating module is used for creating emergency bearing according to the Emmergency log-on request message that comes from described first interface module.

A kind of network side second network element is used for the system of UE emergently to login IP-CAN network, and this network side second network element comprises second interface module and the second load creating module,

Described second interface module is used to receive the request message that comes from network side first network element, and sends to the described second load creating module;

The described second load creating module is used for according to the corresponding emergency bearing of described request message establishing, and returns corresponding response message by described second interface module to described network side first network element.

As seen from the above technical solution, in the disclosed technical scheme of the embodiment of the invention, send the Emmergency log-on request message by the network side network element of UE in the IP-CAN network; When the network side network element in the IP-CAN network receives the Emmergency log-on request message that comes from UE, accept this Emmergency log-on request and establishment and the corresponding emergency bearing of this Emmergency log-on request, so, make UE in emergently to login IP-CAN network, can create the carrying of IMS urgency traffic, thereby reduced time delay and the interacting message that emergency bearing is created in the IP-CAN network.

Description of drawings

Fig. 1 is the method flow schematic diagram that the UE Emmergency log-on arrives GPRS network in the prior art.

Fig. 2 is the exemplary process diagram of the method for UE emergently to login IP of the present invention-CAN network.

Fig. 3 be in the embodiment of the invention one the UE Emmergency log-on to the method flow schematic diagram of SAE network.

Fig. 4 be in the embodiment of the invention two the UE Emmergency log-on to the method flow schematic diagram of SAE network.

Fig. 5 be in the embodiment of the invention three the UE Emmergency log-on to the method flow schematic diagram of SAE network.

Fig. 6 be in the embodiment of the invention four the UE Emmergency log-on to the method flow schematic diagram of SAE network.

Fig. 7 be in the embodiment of the invention five the UE Emmergency log-on to the method flow schematic diagram of SAE network.

Fig. 8 be in the embodiment of the invention six the UE Emmergency log-on to the method flow schematic diagram of GPRS/UMTS network.

Fig. 9 is that the system of UE emergently to login IP-CAN network in the embodiment of the invention forms structural representation.

Figure 10 is the composition structural representation of network side first network element in the system shown in Figure 9.

Figure 11 is the composition structural representation of network side second network element in the system shown in Figure 9.

Embodiment

For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.

Fig. 2 is the exemplary process diagram of the method for UE emergently to login IP of the present invention-CAN network.Referring to Fig. 2, this method may further comprise the steps:

The network side network element of step 201:UE in the IP-CAN network sends the request message of expression Emmergency log-on;

Step 202: when the network side network element in the IP-CAN network receives the request message of the expression Emmergency log-on that comes from UE, create and the corresponding emergency bearing of this Emmergency log-on request.

So far, finish the illustrative methods flow process of UE emergently to login IP of the present invention-CAN network.

In the method shown in Figure 2, emergency bearing is represented the employed carrying of IMS urgency traffic, and this carrying comprises carrying between the inner related network elements of core net and the radio bearer between core net and the wireless access network.Network side network element in the IP-CAN network comprises network side first network element and network side second network element, and the emergency bearing between the inner related network elements of above-mentioned core net promptly builds between described network side first network element and network side second network element.After network side first network element received the Emmergency log-on request message that comes from UE, the mode of setting up emergency bearing between the inner related network elements of core net can comprise following several:

First kind of mode is:

At first, network side first network element is created emergency user context and emergency bearing context, and sends the request message that emergency bearing is created in expression to network side second network element;

Then, the request message that network side second network element is created emergency bearing according to this expression is created the emergency bearing context, is obtained the strategy of emergency bearing and the control (PCC that charges, Policy and ChargingControl) rule, and carry out this PCC rule, return bearing response message to network side first network element.

The second way is:

At first, network side first network element is created the emergency user context, and transmits the request message of received expression Emmergency log-on to network side second network element;

Then, network side second network element is created the emergency bearing context, is obtained the PCC rule of emergency bearing according to the request message of this expression Emmergency log-on, and carries out this PCC rule, returns Emmergency log-on to network side first network element and accepts message.

The third mode is:

At first, network side first network element is created emergency user context and urgent PDP Context, and sends the request message that urgent PDP Context is created in expression to network side second network element;

Then, the request message that network side second network element is created urgent PDP Context according to expression is created urgent PDP Context, is obtained the PCC rule of emergency bearing, and carries out this PCC rule, returns to described network side first network element and creates the PDP Context response message.

In the subsequent descriptions of the embodiment of the invention, abbreviate the request message of above-mentioned expression Emmergency log-on as the Emmergency log-on request message, the request message of expression being created emergency bearing abbreviates emergency bearing request to create message as, and the request message of expression being created urgent PDP Context abbreviates urgent PDP Context request to create message as.

Method shown in Figure 2 can be applied in the IP-CAN networks such as GPRS, UMTS and SAE.

The SAE network is a kind of brand-new evolution network framework that 3GPP is studying.In the SAE network, the packet-based core networks of evolution comprise Mobility Management Entity (MME, Mobility ManagementEntity), user entity (UPE, User Plane Entity) and the user's face anchor point between the different access systems (IASA, Inter Access System Anchor) logical functional entity.

Wherein, MME is responsible for the mobile management of chain of command, comprises user's context management, mobile status management, distributing user temporary identity sign etc., and MME is corresponding to the control plane part of current GPRS/UMTS internal system SGSN;

UPE is responsible for initiating paging, management preservation IP bearing parameter and the interior routing iinformation of network etc. for downlink data under the idle condition, and UPE is corresponding to the datum plane part of current GPRS/UMTS internal system SGSN and GGSN;

IASA then serves as the user's face anchor point between different access systems, 3GPP Anchor logical functional entity is the user's face anchor point between 2G/3G connecting system and Long Term Evolution (LTE) connecting system, and the SAEAnchor logical functional entity is the user's face anchor point between 3GPP connecting system and the non-3GPP connecting system.

Because it is in progress to the research of SAE network, correlation in this network between each functional entity and function are not finally determined as yet, therefore, in the SAE network, the framework that may take MME to separate with UPE, promptly MME is built in respectively in the different physical entities with UPE, also may take the framework of MME and UPE unification, be that MME and UPE are arranged in same physical entity, be designated as MME/UPE.

Under MME and UPE separation architecture, MME is an independent community, and UPE and IASA are positioned among the same entity, are designated as UPE/IASA.MME is corresponding to above-mentioned network side first network element, and UPE/IASA is corresponding to above-mentioned network side second network element.Wherein, and if session management (SM, SessionManagement) function realizes in the MME entity, then adopts above-mentioned first kind of mode to set up emergency bearing between the inner related network elements of core net between MME and the UPE/IASA; If conversation management functional realizes in the UPE/IASA entity, then adopt the above-mentioned second way to set up emergency bearing between the inner related network elements of core net between MME and the UPE/IASA.Radio bearer under this framework is set up flow process and may be initiated by the MME entity, also may be initiated by the UPE/IASA entity.

Under MME and UPE unification framework, MME and UPE are positioned among the same entity, and IASA is an independent community.MME/UPE is corresponding to above-mentioned network side first network element, and IASA is corresponding to above-mentioned network side second network element.Wherein, conversation management functional realizes that in the MME/UPE entity the above-mentioned first kind of mode of employing set up the emergency bearing between the inner related network elements of core net between MME/UPE and the IASA, and the radio bearer under this framework is set up flow process and initiated by the MME/UPE entity.

In GPRS or UMTS network, SGSN is corresponding to above-mentioned network side first network element, and GGSN is corresponding to above-mentioned network side second network element.Above-mentioned the third mode of employing is set up the emergency bearing between the inner related network elements of core net between SGSN and the GGSN, and radio bearer is set up flow process and initiated by SGSN.

At various possible frameworks in the above-mentioned SAE network, and embodiment is at the embodiment of GPRS/UMTS network explanation technical solution of the present invention below by five embodiment.

Embodiment one:

In the present embodiment, suppose the framework that employing MME separates with UPE among the evolvement network SAE, conversation management functional realizes that in the MME entity by the foundation of MME control emergency bearing, and radio bearer is set up flow process and initiated by the MME entity.The relevant step of method with UE emergently to login IP of the present invention-CAN network is only described in the present embodiment, Emmergency log-on flow process in the practical application may also comprise other steps that present embodiment is not described, the step of not doing to describe for present embodiment, please refer to prior art, implement, do not repeat them here according to the technical scheme of present embodiment.

Fig. 3 be in the embodiment of the invention one the UE Emmergency log-on to the method flow schematic diagram of SAE network.Referring to Fig. 3, this method may further comprise the steps:

Step 301:UE sends the Emmergency log-on request message to MME.

In this step, UE can take following several mode to notify MME, and it is the Emmergency log-on request message to the request message that MME sends:

1) UE is carrying urgent indicating bit (Emergency Indicator) to adhering in request (Attach Request) message of MME transmission, or at the tracing section updating request (TAU that sends to MME, Tracking Area Update Request) carries this urgent indicating bit in the message, or can notify in the MME request message that its request message that is sent is the Emmergency log-on request message at other and to carry this urgent indicating bit.

2) the new type of attachment of definition: emergency attached (Emergency Attach), this emergency attached type represents that certain Attach Request message is an Emmergency log-on request message, and UE is provided with this Attach Request message in the Attach Request message that sends to MME type of attachment is an emergency attached.

3) the new updating type of definition: urgent upgrade (Emergency Update), this urgent updating type represents that certain tracing section updating request message is an Emmergency log-on request message, and UE is provided with this tracing section updating request message in the tracing section updating request message that sends to MME updating type upgrades for urgent.

4) the new message of definition: emergency attached request message (Emergency Attach Request), this emergency attached request message is represented an Emmergency log-on request, UE sends this emergency attached request message to MME.

5) the new message of definition: urgent tracing section updating request message (Emergency Tracking AreaUpdate Request), this urgent tracing section updating request message is represented an Emmergency log-on request, and UE sends this urgent tracing section updating request message to MME.

In this step, it is the Emmergency log-on request that UE can also notify its request of being initiated of core net by other feasible modes.

After step 302:MME receives the Emmergency log-on request message of UE transmission, create emergency user context and emergency bearing context, and notify corresponding UPE/IASA to create emergency bearing.

In this step, at first, MME can be provided with urgent sign in user's context and bearer context, be carried as emergency bearing to identify this.In user's context, can use the urgent sign of urgent indicating bit conduct, also can define an expression user's context is the contextual type of emergency user, identifies as urgent with this emergency user context type; In bearer context, can use a specific APN, for example: globally dedicated emergency APN is as urgent sign, also can use urgent indicating bit as urgent sign, can also define an expression bearer context is the type of emergency bearing, identifies as urgent with this emergency bearing type.

Then, MME determines to create the employed UPE/IASA of emergency bearing.MME can determine to create the employed UPE/IASA of emergency bearing by following several modes:

1) when using a specific APN (as globally dedicated emergencyAPN) to identify the carrying of being created when being emergency bearing in the SAE system, MME can determine employed UPE/IASA according to this specific APN, has two kinds of modes of determining employed UPE/IASA this moment:

A) dispose the employed UPE/IASA of this specific APN in advance in MME, MME determines to create the employed UPE/IASA of emergency bearing according to this specific APN;

B) at name server (DNS, Domain Name Server) the employed UPE/IASA of this specific APN of storage in, MME inquires about its pairing UPE/IASA according to this specific APN from dns server, and the UPE/IASA that inquiry obtains is defined as creating the employed UPE/IASA of emergency bearing.

Here, this specific APN can be carried in the Emmergency log-on request message by UE and send to MME, perhaps when the MME judgement request message that UE sent is Emmergency log-on message, selects this APN to identify an emergency bearing voluntarily.

2) not using specific APN to identify the carrying of being created in the SAE system is emergency bearing, and be to use urgent indicating bit or establishment emergency bearing request message to identify the carrying of being created when being emergency bearing, can be at the employed UPE/IASA of MME internal configurations emergency bearing, MME determines to create the employed UPE/IASA of emergency bearing according to this configuration.

3) MME is defined as creating the employed UPE/IASA of emergency bearing with a UPE/IASA in the local network, for example, determines a suitable UPE/IASA according to user position information.

At last, MME sends emergency bearing request to create message to determined UPE/IASA, notifies this UPE/IASA to create emergency bearing.Here, MME can notify determined UPE/IASA to create emergency bearing in the following way:

1) MME sends to UPE/IASA and creates bearing request message (Create Bearer Request), and in this establishment bearing request message, carrying specific APN (as globally dedicatedemergency APN), UPE/IASA judges the emergency bearing that is carried as of needs establishment according to this specific APN.

2) MME sends to UPE/IASA and creates bearing request message (Create Bearer Request), and carries urgent indicating bit in this establishment bearing request message, and UPE/IASA judges the emergency bearing that is carried as of needs establishment according to this indicating bit.

3) MME sends to UPE/IASA and creates bearing request message (Create Bearer Request), and bearer types is set in this establishment bearing request message is emergency bearing (Emergency Bearer), and UPE/IASA judges the emergency bearing that is carried as that needs create according to this bearer types.

4) the new type of message of definition: create emergency bearing request message (Create Emergency BearerRequest), this message represents to create emergency bearing, MME sends this establishment emergency bearing request message to UPE/IASA, and UPE/IASA judges the emergency bearing that is carried as of needs establishment according to this type of message.

Step 303:UPE/IASA creates emergency bearing according to the notice of MME, and to "Policy and Charging Rules Function entity (PCRF, Policy and Charging Rule Function) sends strategy and charging regulation request message (Request Policy and Charging Rules), to obtain the PCC rule of emergency bearing.

PCRF is the functional entity in the PCC network, main implementation strategy control decision function and flow based charging controlled function.

In this step, at first UPE/IASA can be provided with urgent sign in bearer context, is carried as emergency bearing to identify this.Here, can use a specific APN, for example: the special-purpose urgent Access Point Name (globally dedicated emergency APN) of the overall situation is as promptly identifying, also can use urgent indicating bit as urgent sign, can also define an expression bearer context is the type of emergency bearing, identifies as urgent with this emergency bearing type.

Then, UPE/IASA sends strategy and charging regulation request message to PCRF, to obtain the PCC rule of emergency bearing.Can carry sign in the following manner in strategy and charging regulation request message, be that the IMS urgency traffic uses with the notice carrying that PCRF was set up:

1) increase the urgent indicating bit of IMS (IMS Emergency Indicator) field in this request message, expression is set up is carried as the IMS emergency bearing, and the value of this field of UPE/IASA is set to True.

2) increase the bearer types field in this request message, the value of this field of UPE/IASA is set to represent the bearer types of emergency bearing.

3) increase business type field in this request message, the value of this field of UPE/IASA is set to represent the type of service of IMS urgency traffic (IMS Emergency Service).

Step 304: when PCRF when coming from the strategy of UPE/IASA and the sign in the charging regulation request message and judge that this carrying is the carrying of using for the IMS urgency traffic, PCRF offers UPE/IASA with the PCC rule that pre-configured IMS urgency traffic uses, and promptly sends strategy and charging regulation offer message (Policy and Charging Rules Provision) to UPE/IASA.

In this step, can be according to the related service requirement of IMS urgency traffic, according to the collocation method of existing PCC rule, pre-configured and the corresponding PCC rule of IMS urgency traffic.

Step 305:UPE/IASA carries out the PCC rule of being obtained, and returns bearing response message (Bearer Response) to MME.

Application Function (AF, Application Function) is the functional entity in the PCC network, is used to provide various service applications.Usually, can dispose the address of certain professional employed AF in UPE/IASA, in the IMS system, this address is the address of call session control agent functional entity (P-CSCF), this address will send to UE by MME, so that the business that UE can use this AF or P-CSCF to provide.

In the present embodiment, can in UPE/IASA, dispose the employed AF of IMS urgency traffic address.In this step, UPE/IASA carries out after the PCC rule of being obtained, and the employed AF of IMS urgency traffic address is carried on sends to MME in the bearing response message.

Step 306:MME initiates radio bearer to Evolved RAN and sets up request, and Evolved RAN sets up radio bearer.

In this step, can set up the radio bearer of Access Network, not repeat them here according to the relevant regulations among the 3GPP TR23.882.

Step 307: after radio bearer was successfully set up, MME returned carrying acknowledge message (Bearer Ack) to UPE/IASA.

Step 308: after radio bearer was successfully set up, MME returned Emmergency log-on to UE and accepts message, and accepted to carry in the message AF address at this Emmergency log-on.

For Emmergency log-on, UE need not execution cycle tracing section updating (periodic tracking areaupdate) flow process, therefore, in this step, MME accepts in the message period tracking district at Emmergency log-on and upgrades timer and be set to 0, perhaps carries indicating bit indication cycle tracing section updating timer by deexcitation.UE receives after such message not tracing section updating timer activation cycle, not execution cycle tracing section updating flow process.

Step 309:UE receives that the Emmergency log-on that comes from MME accepts after the message, sends Emmergency log-on to MME and finishes message, to confirm finishing of Emmergency log-on.

So far, finish in the embodiment of the invention one the UE Emmergency log-on to the method flow of SAE network.

Embodiment two:

In the present embodiment, suppose the framework that employing MME separates with UPE among the evolvement network SAE, conversation management functional realizes that in the MME entity by the foundation of MME control emergency bearing, and radio bearer is set up flow process and initiated by the UPE/IASA entity.The relevant step of method with UE emergently to login IP of the present invention-CAN network is only described in the present embodiment, Emmergency log-on flow process in the practical application may also comprise other steps that present embodiment is not described, the step of not doing to describe for present embodiment, please refer to prior art, implement, do not repeat them here according to the technical scheme of the embodiment of the invention.

Fig. 4 be in the embodiment of the invention two the UE Emmergency log-on to the method flow schematic diagram of SAE network.Referring to Fig. 4, this method may further comprise the steps:

Step 401:UE sends the Emmergency log-on request message to MME.

In this step, UE is identical with embodiment one step 301 to the mode that MME sends the Emmergency log-on request message, does not repeat them here.

After step 402:MME receives the Emmergency log-on request message of UE transmission, create emergency user context and emergency bearing context, and notify corresponding UPE/IASA to create emergency bearing.

In this step, at first, MME can according to embodiment one step 302 in identical mode urgent sign is set in user's context and bearer context, be carried as emergency bearing to identify this.

Then, MME determines to create the employed UPE/IASA of emergency bearing.Here, MME determines that the mode of UPE/IASA is identical with mode in embodiment one step 302, does not repeat them here.

At last, MME sends emergency bearing request to create message to determined UPE/IASA, notifies this UPE/IASA to create emergency bearing.Here, the emergency bearing request to create message that MME sends to UPE/IASA is also consistent with corresponding message in embodiment one step 302, sees also the associated description in embodiment one step 302.

Step 403:UPE/IASA creates emergency bearing according to the notice of MME, and sends strategy and charging regulation request message (Request Policy and Charging Rules) to PCRF, to obtain the PCC rule of emergency bearing.

In this step, at first UPE/IASA can according to embodiment one step 303 in identical mode urgent sign is set in bearer context, be carried as emergency bearing to identify this.

Then, UPE/IASA sends strategy and charging regulation request message to PCRF, to obtain the PCC rule of emergency bearing.Here, in strategy and charging regulation request message, carry sign, identical to notify the mode that is carried as the employed carrying of IMS urgency traffic that PCRF was set up with mode in embodiment one step 303, do not repeat them here.

Step 404: when PCRF when coming from the strategy of UPE/IASA and the sign in the charging regulation request message and judge that this carrying is the carrying of using for the IMS urgency traffic, PCRF offers UPE/IASA with the PCC rule that pre-configured IMS urgency traffic uses, and promptly sends strategy and charging regulation offer message (Policy and Charging Rules Provision) to UPE/IASA.

Step 405:UPE/IASA carries out the PCC rule of being obtained, and initiates radio bearer to Evolved RAN and set up request, and Evolved RAN sets up radio bearer.

Step 406: after radio bearer was successfully set up, UPE/IASA returned bearing response message (Bearer Response) to MME.

In the present embodiment, can in UPE/IASA, dispose the employed AF of IMS urgency traffic address.In this step, UPE/IASA is carried on the employed AF of IMS urgency traffic address and sends to MME in the bearing response message.

Step 407:MME returns Emmergency log-on to UE and accepts message, and accepts to carry in the message AF address at this Emmergency log-on.

For Emmergency log-on, UE need not execution cycle tracing section updating flow process, and therefore, in this step, MME accepts in the message period tracking district at Emmergency log-on and upgrades timer and be set to 0, perhaps carries indicating bit indication cycle tracing section updating timer by deexcitation.UE receives after such message not tracing section updating timer activation cycle, not execution cycle tracing section updating flow process.

Step 408:UE receives that the Emmergency log-on that comes from MME accepts after the message, sends Emmergency log-on to MME and finishes message, to confirm finishing of Emmergency log-on.

So far, finish in the embodiment of the invention two the UE Emmergency log-on to the method flow of SAE network.

Embodiment three:

In the present embodiment, suppose the framework that employing MME separates with UPE among the evolvement network SAE, conversation management functional realizes that in the UPE entity by the foundation of UPE/IASA control emergency bearing, and radio bearer is set up flow process and initiated by the MME entity.The relevant step of method with UE emergently to login IP of the present invention-CAN network is only described in the present embodiment, Emmergency log-on flow process in the practical application may also comprise other steps that present embodiment is not described, the step of not doing to describe for present embodiment, please refer to prior art, implement, do not repeat them here according to the technical scheme of the embodiment of the invention.

Fig. 5 be in the embodiment of the invention three the UE Emmergency log-on to the method flow schematic diagram of SAE network.Referring to Fig. 5, this method may further comprise the steps:

Step 501:UE sends the Emmergency log-on request message to MME.

After step 502:MME receives the Emmergency log-on request message of UE transmission, create the emergency user context, and this Emmergency log-on request message is transmitted to corresponding UPE/IASA.

In this step, MME receives after the Emmergency log-on request message that comes from UE, can according to embodiment one step 302 in identical mode urgent sign is set in user's context, be carried as emergency bearing to identify this, and according to the definite employed UPE/IASA of emergency bearing that creates of the mode in embodiment one step 302, at last, transmit the Emmergency log-on request message to determined UPE/IASA.

Step 503:UPE/IASA creates emergency bearing after receiving the Emmergency log-on request message of MME, and sends strategy and charging regulation request message (Request Policy and ChargingRules) to PCRF, to obtain the PCC rule of emergency bearing.

Step 504: when PCRF when coming from the strategy of UPE/IASA and the sign in the charging regulation request message and judge that this carrying is the carrying of using for the IMS urgency traffic, PCRF offers UPE/IASA with the PCC rule that pre-configured IMS urgency traffic uses, and promptly sends strategy and charging regulation offer message (Policy and Charging Rules Provision) to UPE/IASA.

Step 505:UPE/IASA carries out the PCC rule of being obtained, and sends the request message that emergency bearing is created in expression to MME, and notice MME creates emergency bearing.

In this step, UPE/IASA can notify MME to create emergency bearing in the following way:

1) UPE/IASA sends to MME and creates bearing request message (Create Bearer Request), and in this establishment bearing request message, carrying specific APN (as globally dedicatedemergency APN), MME judges the emergency bearing that is carried as of needs establishment according to this specific APN.

2) UPE/IASA sends to MME and creates bearing request message (Create Bearer Request), and in this establishment bearing request message, carrying urgent indicating bit (Emergency Indicator), MME judges the emergency bearing that is carried as of needs establishment according to this indicating bit.

3) UPE/IASA sends to MME and creates bearing request message (Create Bearer Request), and bearer types is set in this establishment bearing request message is emergency bearing (Emergency Bearer), and MME judges the emergency bearing that is carried as that needs create according to this bearer types.

4) the new type of message of definition: create emergency bearing request message (Create Emergency BearerRequest), this message represents to create emergency bearing, UPE/IASA sends this establishment emergency bearing request message to MME, and MME judges the emergency bearing that is carried as of needs establishment according to this type of message.

Step 506:MME initiates radio bearer to Evolved RAN and sets up request, and Evolved RAN sets up radio bearer.

Step 507: after radio bearer was successfully set up, MME returned load creating response message (Create Bearer Response) to UPE/IASA.

Step 508:UPE/IASA receives after the load creating response message that comes from MME, returns Emmergency log-on to MME and accept message.

In the present embodiment, the employed AF of configuration IMS urgency traffic address in UPE/IASA.In this step, UPE/IASA is carried on the employed AF of IMS urgency traffic address and sends to MME in the bearing response message.

Step 509:MME receives that the Emmergency log-on that comes from UPE/IASA accepts after the message, returns Emmergency log-on to UE and accepts message, and accept to carry in the message AF address at this Emmergency log-on.

Step 510:UE receives that the Emmergency log-on that comes from MME accepts after the message, sends Emmergency log-on to MME and finishes message, to confirm finishing of Emmergency log-on.

So far, finish in the embodiment of the invention three the UE Emmergency log-on to the method flow of SAE network.

Embodiment four:

In the present embodiment, suppose the framework that employing MME separates with UPE among the evolvement network SAE, conversation management functional realizes that in the UPE entity by the foundation of UPE/IASA control emergency bearing, and radio bearer is set up flow process and initiated by the UPE/IASA entity.The relevant step of method with UE emergently to login IP of the present invention-CAN network is only described in the present embodiment, Emmergency log-on flow process in the practical application may also comprise other steps that present embodiment is not described, the step of not doing to describe for present embodiment, please refer to prior art, implement, do not repeat them here according to the technical scheme of the embodiment of the invention.

Fig. 6 be in the embodiment of the invention four the UE Emmergency log-on to the method flow schematic diagram of SAE network.Referring to Fig. 6, this method may further comprise the steps:

Step 601:UE sends the Emmergency log-on request message to MME.

After step 602:MME receives the Emmergency log-on request message of UE transmission, create the emergency user context, and this Emmergency log-on request message is transmitted to corresponding UPE/IASA.

Step 603:UPE/IASA creates emergency bearing after receiving the Emmergency log-on request message of MME, and sends strategy and charging regulation request message (Request Policy and ChargingRules) to PCRF, to obtain the PCC rule of emergency bearing.

Step 604: when PCRF when coming from the strategy of UPE/IASA and the sign in the charging regulation request message and judge that this carrying is the carrying of using for the IMS urgency traffic, PCRF offers UPE/IASA with the PCC rule that pre-configured IMS urgency traffic uses, and promptly sends strategy and charging regulation offer message (Policy and Charging Rules Provision) to UPE/IASA.

Step 605:UPE/IASA carries out the PCC rule of being obtained, and initiates radio bearer to Evolved RAN and set up request, and Evolved RAN sets up radio bearer.

Step 606: after radio bearer was successfully set up, UPE/IASA returned Emmergency log-on to MME and accepts message.

In the present embodiment, the employed AF of configuration IMS urgency traffic address in UPE/IASA.In this step, UPE/IASA is carried on Emmergency log-on with the employed AF of IMS urgency traffic address and accepts to send in the message MME.

Step 607:MME receives that the Emmergency log-on that comes from UPE/IAS accepts after the message, returns Emmergency log-on to UE and accepts message, and accept to carry in the message AF address at this Emmergency log-on.

Step 608:UE receives that the Emmergency log-on that comes from MME accepts after the message, sends Emmergency log-on to MME and finishes message, to confirm finishing of Emmergency log-on.

So far, finish in the embodiment of the invention four the UE Emmergency log-on to the method flow of SAE network.

Embodiment five:

In the present embodiment, suppose to adopt among the evolvement network SAE framework of MME and UPE unification, conversation management functional is realized in this MME/UPE unification entity, by the foundation of MME/UPE entity control emergency bearing, and radio bearer is set up flow process and is initiated by the MME/UPE entity.The relevant step of method with UE emergently to login IP of the present invention-CAN network is only described in the present embodiment, Emmergency log-on flow process in the practical application may also comprise other steps that present embodiment is not described, the step of not doing to describe for present embodiment, please refer to prior art, implement, do not repeat them here according to the main thought of the present invention.

Fig. 7 be in the embodiment of the invention five the UE Emmergency log-on to the method flow schematic diagram of SAE network.Referring to Fig. 7, this method may further comprise the steps:

Step 701:UE sends the Emmergency log-on request message to MME/UPE.

In this step, UE is identical with embodiment one step 301 to the mode that MME/UPE sends the Emmergency log-on request message, does not repeat them here.

After step 702:MME/UPE receives the Emmergency log-on request message of UE transmission, create emergency user context and emergency bearing, and notify corresponding IASA to create emergency bearing.

In this step, at first, MME/UPE can according to embodiment one step 302 in identical mode urgent sign is set in user's context and bearer context, be carried as emergency bearing to identify this.

Then, MME/UPE determines to create the employed IASA of emergency bearing.Here MME determines that the mode of UPE/IASA is identical in the MME/UPE mode of determining IASA and embodiment one step 302, does not repeat them here.

At last, MME/UPE sends the request message that emergency bearing is created in expression to determined IASA, notifies this IASA to create emergency bearing.Here, MME/UPE to emergency bearing request to create message that IASA sends also with embodiment one step 302 in MME consistent to the message that UPE/IASA sends, see also the associated description in embodiment one step 302.

Step 703:IASA creates emergency bearing according to the notice of MME/UPE, and sends strategy and charging regulation request message (Request Policy and Charging Rules) to PCRF, to obtain the PCC rule of emergency bearing.

In this step, at first IASA can be provided with urgent sign in bearer context, is carried as emergency bearing to identify this.Here, can use a specific APN, for example: globally dedicatedemergency APN also can define a urgent indicating bit as urgent sign as urgent sign, can also define an emergency bearing type as urgent sign.

Then, IASA sends strategy and charging regulation request message to PCRF, to obtain the PCC rule of emergency bearing.Here, in strategy and charging regulation request message, carry sign, identical to notify in the mode that is carried as the employed carrying of IMS urgency traffic that PCRF was set up and embodiment one step 303 UPE/IASA to carry label manner, do not repeat them here.

Step 704: when PCRF when coming from the strategy of IASA and the sign in the charging regulation request message and judge that this carrying is the carrying of using for the IMS urgency traffic, PCRF offers IASA with the PCC rule that pre-configured IMS urgency traffic uses, and promptly sends strategy and charging regulation offer message (Policy and Charging Rules Provision) to IASA.

Step 705:IASA carries out the PCC rule of being obtained, and returns bearing response message (Bearer Response) to MME/UPE.

In the present embodiment, the employed AF of configuration IMS urgency traffic address in IASA.In this step, IASA is carried on the employed AF of IMS urgency traffic address and sends to MME/UPE in the bearing response message.

After step 706:MME/UPE receives the bearing response message that comes from IASA, initiate radio bearer to EvolvedRAN and set up, Evolved RAN sets up radio bearer.

Step 707: after radio bearer was successfully set up, MME/UPE returned carrying acknowledge message (Bearer Ack) to IASA.

Step 708:MME/UPE returns Emmergency log-on to UE and accepts message, and accepts to carry in the message AF address at this Emmergency log-on.

Step 709:UE receives that the Emmergency log-on that comes from MME/UPE accepts after the message, sends Emmergency log-on to MME/UPE and finishes message, to confirm finishing of Emmergency log-on.

So far, finish in the embodiment of the invention five the UE Emmergency log-on to the method flow of SAE network.

More than describe the method for UE Emmergency log-on of the present invention that how to realize in detail by five embodiment to the SAE network, describe in detail below by embodiment and how to use the present invention to realize that the UE Emmergency log-on is to GPRS or UMTS network.

Embodiment six:

In the present embodiment, be that example describes in GPRS or UMTS network, to implement Emmergency log-on method of the present invention.In the GPRS/UMTS network, realize conversation management functional by SGSN, the foundation of control emergency bearing, and radio bearer is set up flow process and is initiated by SGSN.The relevant step of method with UE emergently to login IP of the present invention-CAN network is only described in the present embodiment, Emmergency log-on flow process in the practical application may also comprise other steps that present embodiment is not described, the step of not doing to describe for present embodiment, please refer to prior art, implement, do not repeat them here according to the technical scheme of the embodiment of the invention.

Fig. 8 be in the embodiment of the invention five the UE Emmergency log-on to the method flow schematic diagram of GPRS/UMTS network.Referring to Fig. 8, this method may further comprise the steps:

Step 801:UE sends the Emmergency log-on request message to SGSN.

In this step, UE is identical with embodiment one step 301 to the mode that SGSN sends the Emmergency log-on request message, does not repeat them here.

After step 802:SGSN receives the Emmergency log-on request message of UE transmission, create emergency user context and urgent PDP Context, and notify corresponding GGSN to create urgent PDP Context.

In this step, at first, SGSN is provided with urgent this user's context of sign bit-identify in user's context be the emergency user context, here, can use urgent indicating bit as urgent sign, also can define an emergency user context type as urgent sign; Urgent this PDP Context of sign bit-identify is set is urgent PDP Context (this PDP Context correspondence be carried as emergency bearing) to SGSN in PDP Context, can use a specific APN, for example: globally dedicatedemergency APN is as urgent sign, also can use urgent indicating bit as urgent sign, can also define a urgent PDP Context type as urgent sign.

Then, SGSN determines to create the employed GGSN of emergency bearing.Here, MME determines that the mode of UPE/IASA is identical in the mode that SGSN determines GGSN and embodiment one step 302, does not repeat them here.

At last, SGSN sends urgent PDP Context request to create message to determined GGSN, notifies this GGSN to create urgent PDP Context.Here, SGSN can notify selected GGSN to create urgent PDP Context in the following way:

1) SGSN sends to GGSN and creates PDP Context request message (Create PDP ContextRequest), and in this establishment PDP Context request message, carrying specific APN (as globallydedicated emergency APN), GGSN judges that according to this specific APN the PDP Context that needs are created is urgent PDP Context.

2) SGSN sends to GGSN and creates PDP Context request message (Create PDP ContextRequest), and in this establishment PDP Context request message, carrying urgent indicating bit (EmergencyIndicator), GGSN judges that according to this indicating bit the PDP Context that needs are created is urgent PDP Context.

3) SGSN sends to GGSN and creates PDP Context request message (Create PDP ContextRequest), and the PDP Context type is set in this establishment PDP Context request message is urgent PDP Context (Emergency PDP Context), and the PDP Context that GGSN creates according to these PDP Context type decision needs is urgent PDP Context.

4) the new type of message of definition: create urgent PDP Context request message (Create EmergencyPDP Context Request), this message represents to create urgent PDP Context, SGSN sends this to GGSN and creates urgent PDP Context request message, and GGSN judges that according to this type of message the PDP Context that needs are created is urgent PDP Context.

Step 803:GGSN creates urgent PDP Context according to the notice of SGSN, and sends strategy and charging regulation request message (Request Policy and Charging Rules) to PCRF, to obtain the PCC rule of emergency bearing.

In this step, at first GGSN can be provided with urgent sign in urgent PDP Context, is carried as emergency bearing to identify this.Here, can use a specific APN, for example: globallydedicated emergency APN also can define a urgent indicating bit as urgent sign as urgent sign, can also define a urgent PDP Context type as urgent sign.

Then, GGSN sends strategy and charging regulation request message to PCRF, to obtain the PCC rule of emergency bearing.Here, in strategy and charging regulation request message, carry sign, identical to notify among the mode that is carried as the employed carrying of IMS urgency traffic that PCRF was set up and embodiment step 303 UPE/IASA to carry label manner, do not repeat them here.

Step 804: when PCRF when coming from the strategy of GGSN and the sign in the charging regulation request message and judge that this carrying is the carrying of using for the IMS urgency traffic, PCRF offers GGSN with the PCC rule that pre-configured IMS urgency traffic uses, and promptly sends strategy and charging regulation offer message (Policy and Charging Rules Provision) to GGSN.

Step 805:GGSN carries out the PCC rule of being obtained, and returns establishment PDP Context response message (Create PDP Context Response) to SGSN.

In the present embodiment, the employed AF of configuration IMS urgency traffic address in GGSN.In this step, GGSN is carried on the employed AF of IMS urgency traffic address to create in the PDP Context response message and sends to SGSN.

After step 806:SGSN receives the bearing response message that comes from GGSN, initiate radio bearer to GERAN/UTRAN and set up, GERAN/UTRAN sets up radio bearer.

Step 807: after radio bearer was successfully set up, SGSN returned Emmergency log-on to UE and accepts message, and accepted to carry in the message AF address at this Emmergency log-on.

For Emmergency log-on, UE need not execution cycle Routing Area Update flow process, and therefore, in this step, MME accepts at Emmergency log-on that cycle Routing Area Update timer is set to 0 in the message, perhaps carries indicating bit indication cycle Routing Area Update timer by deexcitation.UE receives after such message not Routing Area Update timer activation cycle, not execution cycle Routing Area Update flow process.

Step 808:UE receives that the Emmergency log-on that comes from SGSN accepts after the message, sends Emmergency log-on to SGSN and finishes message, to confirm finishing of Emmergency log-on.

So far, finish in the embodiment of the invention six the UE Emmergency log-on to the method flow of GPRS/UMTS network.

By above-mentioned six embodiment as seen, the embodiment of the invention is by sending the Emmergency log-on request message by the network side network element of UE in the IP-CAN network; When the network side network element in the IP-CAN network receives the Emmergency log-on request message that comes from UE, accept this Emmergency log-on request and establishment and the corresponding emergency bearing of this Emmergency log-on request, so, make UE in emergently to login IP-CAN network, can create the carrying of IMS urgency traffic, thereby reduced time delay and the interacting message that emergency bearing is created in the IP-CAN network.

More than describe the embodiment of the method for UE emergently to login IP of the present invention-CAN network in detail by six embodiment, the system to UE emergently to login IP-CAN network in the embodiment of the invention is elaborated below.

Fig. 9 is that the system of UE emergently to login IP-CAN network in the embodiment of the invention forms structural representation.Referring to Fig. 9, this system comprises: UE910 and network side network element 920, wherein, network side network element 920 further comprises: network side first network element 921 and network side second network element 922.

Wherein, UE910 is used for sending the Emmergency log-on request message to network side network element 920;

Network side network element 920 is used for creating emergency bearing according to the Emmergency log-on request message that comes from UE910.

Corresponding to the mode of setting up emergency bearing between the inner related network elements of aforementioned core net, network side first network element 921 is as follows with the function that network side second network element 922 is finished:

Under first kind of mode:

Network side first network element 921 is used for creating emergency user context and emergency bearing context according to the Emmergency log-on request message that comes from UE910, and sends emergency bearing request to create message to network side second network element 922;

Network side second network element 922 is used for according to emergency bearing request to create message establishing emergency bearing context, obtains the PCC rule of emergency bearing, and carry out this PCC rule, and is used for returning bearing response message to network side first network element 921.

Under the second way:

Network side first network element 921 is used for creating the emergency user context according to the Emmergency log-on request message that comes from UE910, and transmits this Emmergency log-on request message to network side second network element 922;

Network side second network element 922 is used for creating the emergency bearing context, obtaining the PCC rule of emergency bearing according to the Emmergency log-on request message, and carries out this PCC rule, and is used for returning Emmergency log-on to network side first network element 921 and accepts message.

Under the third mode:

Network side first network element 921 is used for creating emergency user context and urgent PDP Context according to the Emmergency log-on request message that comes from UE910, and sends urgent PDP Context request to create message to network side second network element 922;

Network side second network element 922, be used for according to the urgent urgent PDP Context of PDP Context request to create message establishing, obtain the PCC rule of emergency bearing, and carry out this PCC rule, and be used for returning establishment PDP Context response message to network side first network element 921.

In the system shown in Figure 9, UE910 is used for that urgent indicating bit is carried on Attach Request message and sends to network side first network element 921 as the Emmergency log-on request message;

Or, be used for that urgent indicating bit is carried on the tracing section updating request message and send to network side first network element 921 as the Emmergency log-on request message;

Or being used for type of attachment is that the Attach Request message of emergency attached sends to network side first network element 921 as the Emmergency log-on request message;

Or, be used for updating type is sent to network side first network element 921 for the urgent tracing section updating request message that upgrades as the Emmergency log-on request message;

Or, be used for emergency attached request message is sent to network side first network element 921 as the Emmergency log-on request message;

Or, be used for urgent tracing section updating request message is sent to network side first network element 921 as the Emmergency log-on request message.

Under first kind of mode, the establishment bearing request message that network side first network element 921 is used for carrying specific APN sends to network side second network element 922 as emergency bearing request to create message;

Or the establishment bearing request message that is used for carrying urgent indicating bit sends to network side second network element 922 as emergency bearing request to create message;

Or being used for bearer types is that the establishment bearing request message of emergency bearing sends to network side second network element 922 as emergency bearing request to create message;

Or, be used for establishment emergency bearing request message is sent to network side second network element 922.

Under the second way, if network side first network element 921 is further used for initiating radio bearer and sets up flow process, then network side second network element 922 is further used for emergency bearing request to create message is sent to network side first network element 921, and network side first network element 921 is set up the radio bearer of Access Network according to this emergency bearing request to create message.At this moment, the network side second network element 922 establishment bearing request message that is used for carrying specific APN sends to network side first network element 921 as emergency bearing request to create message;

Or the establishment bearing request message that is used for carrying urgent indicating bit sends to network side first network element 921 as emergency bearing request to create message;

Or being used for bearer types is that the establishment bearing request message of emergency bearing sends to network side first network element 921 as emergency bearing request to create message;

Or, be used for establishment emergency bearing request message is sent to network side first network element 921.

Under the third mode, the establishment PDP Context request message that network side first network element 921 is used for carrying specific APN sends to network side second network element 922 as urgent PDP Context request to create message;

Or the establishment PDP Context request message that is used for carrying urgent indicating bit sends to network side second network element 922 as urgent PDP Context request to create message;

Or being used for bearer types is that the establishment PDP Context request message of emergency bearing sends to network side second network element 922 as urgent PDP Context request to create message;

Or, be used for the urgent PDP Context request message of establishment is sent to network side second network element 922.

Network side first network element 921 is further used for determining to create employed network side second network element 922 of emergency bearing.When determine creating employed network side second network element 922 of emergency bearing, network side first network element 921 is used to dispose employed network side second network element 922 of specific APN, and is used for determining to create employed network side second network element 922 of emergency bearing according to specific APN;

Or, be used for obtaining employed network side second network element 922 of establishment emergency bearing from DNS according to specific APN;

Or, be used for configuration and create employed network side second network element 922 of emergency bearing, and be used for determining to create employed network side second network element 922 of emergency bearing according to this configuration;

Or, be used for determining to create employed network side second network element 922 of emergency bearing according to the positional information of UE.

In system shown in Figure 9, may further include PCRF.This PCRF can be used for configuration and the corresponding PCC rule of emergency bearing, and obtain the strategy and the charging regulation request message of emergency bearing PCC rule according to the expression that comes from network side second network element 922, the corresponding PCC rule of emergency bearing is carried on strategy and charging regulation sends to network side second network element 922 in giving information;

Network side second network element 922 can be used for sending strategy and the charging regulation request message that emergency bearing PCC rule is obtained in expression to PCRF, and receives the strategy and the charging regulation that carry with the corresponding PCC rule of emergency bearing that come from PCRF and give information.

If increase the urgent indicating bit field of the IMS that is carried as emergency bearing that expression is set up in described strategy and charging regulation request message, then network side second network element 922 is used for being set to the value that PCRF sends the urgent indicating bit field of this IMS strategy and the charging regulation request message of True;

If increase the bearer types field in described strategy and charging regulation request message, then network side second network element 922 is used for sending strategy and the charging regulation request message that this bearer types field is set to emergency bearing to PCRF;

If increase business type field in described strategy and charging regulation request message, then network side second network element 922 is used for sending strategy and the charging regulation request message that this business type field is set to the IMS urgency traffic to PCRF.

And network side second network element 922 can be further used for disposing the employed AF of IMS urgency traffic address, and this AF address is carried on sends to network side first network element 921 in the message that network side first network element 921 returns.Accept message and send to UE and network side first network element 921 can be carried on resulting AF address Emmergency log-on.In addition, network side first network element is further used for returning the cycle that carries to UE910 and upgrades timer and be set to 0, perhaps carries the indicating bit identification cycle and upgrades timer and accepted message by the Emmergency log-on of deexcitation.

The IP-CAN network can comprise mobile communications networks such as GPRS, UMTS and SAE.For the SAE network under MME and the UPE separation architecture, network side first network element can be MME, and network side second network element 922 can be UPE/IASA; For the SAE network under MME and the UPE unification framework, network side first network element can be MME/UPE, and network side second network element 922 can be IASA; For GPRS or UMTS network, network side first network element can be SGSN, and network side second network element 922 can be GGSN.

Figure 10 is the composition structural representation of network side first network element in the system shown in Figure 9.Referring to Figure 10, this network side first network element comprises: first interface module 1001 and the first load creating module 1002.

Wherein, first interface module 1001, the Emmergency log-on request message that is used for coming from UE sends to the first load creating module 1002;

The first load creating module 1002 is used for creating emergency bearing according to the Emmergency log-on request message that comes from first interface module 1001.

Corresponding to the mode of setting up emergency bearing between the inner related network elements of aforementioned core net, the function that network side first each module of network element internal is finished is as follows:

Under first kind of mode:

The first load creating module 1002 is used to create emergency user context and emergency bearing context, and sends emergency bearing request to create message by first interface module 1001 to network side second network element;

First interface module 1001 is used for sending emergency bearing request to create message to network side second network element, and receives the bearing response message that comes from network side second network element.

Under this mode, network side first network element can be MME or MME/UPE.And, the first load creating module 1002, the establishment bearing request message that is used for carrying specific APN sends to network side second network element as emergency bearing request to create message by first interface module 1001;

Or the establishment bearing request message that is used for carrying urgent indicating bit sends to network side second network element as emergency bearing request to create message by first interface module 1001;

Or being used for bearer types is that the establishment bearing request message of emergency bearing sends to network side second network element as emergency bearing request to create message by first interface module 1001;

Or, be used for establishment emergency bearing request message is sent to network side second network element by first interface module 1001.

Under the second way:

The first load creating module 1002 is used to create the emergency user context, and transmits the Emmergency log-on request message by first interface module 1001 to network side second network element;

First interface module 1001 is used for sending the Emmergency log-on request message to network side second network element, and receives the Emmergency log-on that comes from network side second network element and accept message.

Under this mode, network side first network element can be MME.When network side first network element is further used for initiating radio bearer when setting up flow process, first interface module 1001 is further used for receiving the emergency bearing request to create message that comes from network side second network element.

Under the third mode:

The first load creating module 1002 is used to create emergency user context and urgent PDP Context, and sends urgent PDP Context request to create message by first interface module 1001 to network side second network element;

First interface module 1001 is used for sending urgent PDP Context request to create message to network side second network element, and receives the establishment PDP Context response message that comes from network side second network element.

Under this mode, network side first network element can be SGSN.And, the first load creating module 1002, the establishment PDP Context request message that is used for carrying specific APN sends to network side second network element as urgent PDP Context request to create message by first interface module 1001;

Or the establishment PDP Context request message that is used for carrying urgent indicating bit sends to network side second network element as urgent PDP Context request to create message by first interface module 1001;

Or being used for bearer types is that the establishment PDP Context request message of emergency bearing sends to network side second network element as urgent PDP Context request to create message by first interface module 1001;

Or, be used for the urgent PDP Context request message of establishment is sent to network side second network element by first interface module 1001.

May further include in network side first network element shown in Figure 10: the network side second network element determination module;

The network side second network element determination module can be used for determining to create employed network side second network element of emergency bearing, and notify first interface module 1001 with determined network side second network element;

First interface module 1001 can be used for sending a request message to network side second network element that the network side second network element determination module is notified.

When the network side second network element determination module in network side first network element shown in Figure 10 determine to be created employed network side second network element of emergency bearing, can be used to dispose employed network side second network element of specific APN, and be used for determining to create employed network side second network element of emergency bearing according to specific APN;

Or, be used for obtaining employed network side second network element of establishment emergency bearing from DNS according to specific APN;

Or, be used for configuration and create employed network side second network element of emergency bearing, and be used for determining to create employed network side second network element of emergency bearing according to this configuration;

Or, be used for determining to create employed network side second network element of emergency bearing according to the positional information of UE.

First interface module can also be used to receive the message that carries the employed AF of IMS urgency traffic address that comes from network side second network element, and this AF address is sent to the described first load creating module 1002;

The first load creating module 1002 is used for that this AF address is carried on Emmergency log-on and accepts message, sends to described UE by first interface module 1001.

The first load creating module 1002, also be used for by first interface module 1001 to UE910 return the cycle that carries upgrade timer be set to 0 or the cycle upgrade timer and accepted message by the Emmergency log-on of deexcitation sign position.

Figure 11 is the composition structural representation of network side second network element in the system shown in Figure 9.Referring to Figure 11, this network side second network element comprises second interface module 1101 and the second load creating module 1102.

Wherein, second interface module 1101 is used to receive the request message that comes from network side first network element, and sends to the described second load creating module 1102;

The described second load creating module 1102 is used for according to the corresponding emergency bearing of described request message establishing, and returns corresponding response message by described second interface module 1101 to described network side first network element.

Corresponding to the mode of setting up emergency bearing between the inner related network elements of aforementioned core net, the function that network side second each module of network element internal is finished is as follows:

Under first kind of mode:

Second interface module 1101 is used to receive the emergency bearing request to create message that comes from network side first network element, and emergency bearing request to create message is sent to the second load creating module 1102;

The second load creating module 1102, be used for according to emergency bearing request to create message establishing emergency bearing context, obtain the PCC rule of emergency bearing, and carry out this PCC rule, and return bearing response message to network side first network element by second interface module 1101.

Under this mode, network side second network element can be UPE/IASA or IASA.

Under the second way:

Second interface module 1101 is used to receive the Emmergency log-on request message that comes from network side first network element, and the Emmergency log-on request message is sent to the second load creating module 1102;

The second load creating module 1102, be used for creating the emergency bearing context, obtaining the PCC rule of emergency bearing according to the Emmergency log-on request message, and carry out this PCC rule, and return Emmergency log-on by second interface module 1102 to network side first network element and accept message.

Under this mode, network side second network element can be UPE/IASA.When network side first network element is further used for initiating radio bearer when setting up flow process, then the second load creating module 1102 is further used for sending emergency bearing request to create message by second interface module 1101 to network side first network element.Particularly, the second load creating module 1102 establishment bearing request message that is used for carrying specific APN sends to network side first network element as emergency bearing request to create message by second interface module 1101;

Or the establishment bearing request message that is used for carrying urgent indicating bit sends to network side first network element as emergency bearing request to create message by second interface module 1101;

Or being used for bearer types is that the establishment bearing request message of emergency bearing sends to network side first network element as emergency bearing request to create message by second interface module 1101;

Or, be used for establishment emergency bearing request message is sent to network side first network element by second interface module 1101.

Under the third mode:

Second interface module 1101 is used to receive the urgent PDP Context request to create message that comes from network side first network element, and urgent PDP Context request to create message is sent to the second load creating module 1102;

The second load creating module 1102, be used for according to the urgent urgent PDP Context of PDP Context request to create message establishing, obtain the PCC rule of emergency bearing, and carry out this PCC rule, and return establishment PDP Context response message to network side first network element by second interface module 1101.

Under this mode, network side second network element can be GGSN.

In network side second network element shown in Figure 11, the second load creating module 1102 sends strategy and the charging regulation request message that emergency bearing PCC rule is obtained in expression by second interface module 1101 to PCRF, to obtain the PCC rule of emergency bearing.Particularly, if increase to represent the urgent indicating bit field of the IMS that is carried as emergency bearing set up in strategy and charging regulation request message, then the second load creating module 1102 is used for being set to by the value that second interface module 1101 sends the urgent indicating bit field of this IMS to PCRF strategy and the charging regulation request message of True;

If increase the bearer types field in described strategy and charging regulation request message, then the second load creating module 1102 is used for sending strategy and the charging regulation request message that this bearer types field is set to emergency bearing by second interface module 1101 to PCRF;

If increase business type field in described strategy and charging regulation request message, then the second load creating module 1102 is used for sending strategy and the charging regulation request message that this business type field is set to the IMS urgency traffic by second interface module 1101 to PCRF.

In network side second network element shown in Figure 11, may further include memory module; This memory module can be used to store the employed AF of IMS urgency traffic address, and is used for by second interface module 1101 this AF address being carried on the message of returning to network side first network element and sends to network side first network element.

As seen from the above-described embodiment, the present invention is by sending the Emmergency log-on request message by the network side network element of UE in the IP-CAN network; When the network side network element in the IP-CAN network receives the Emmergency log-on request message that comes from UE, accept this Emmergency log-on request and establishment and the corresponding emergency bearing of this Emmergency log-on request, so, make UE in emergently to login IP-CAN network, can create the carrying of IMS urgency traffic, thereby reduced time delay and the interacting message that emergency bearing is created in the IP-CAN network.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a user terminal UE emergently to login IP connects the method for access network IP-CAN, it is characterized in that this method may further comprise the steps:

When the network side network element in the IP-CAN network receives the Emmergency log-on request message of UE, create and the corresponding emergency bearing of described Emmergency log-on request;

Wherein, described network side network element comprises network side first network element and network side second network element; Described establishment and the corresponding emergency bearing of described Emmergency log-on request comprise any one in following three kinds of modes:

First kind of mode is: after network side first network element receives the Emmergency log-on request message of UE, create emergency user context and emergency bearing context, and send emergency bearing request to create message to network side second network element; Described network side second network element is according to described emergency bearing request to create message establishing emergency bearing context, the strategy that obtains emergency bearing and charging control PCC rule, and carries out described PCC rule, returns bearing response message to described network side first network element;

The second way is: after network side first network element receives the Emmergency log-on request message of UE, create the emergency user context, and transmit described Emmergency log-on request message to network side second network element;

Described network side second network element is created the emergency bearing context, is obtained the PCC rule of emergency bearing according to described Emmergency log-on request message, and carries out described PCC rule, returns Emmergency log-on to described network side first network element and accepts message;

The third mode is: after network side first network element receives the Emmergency log-on request message of UE, create emergency user context and emergency packet data agreement PDP Context, and send urgent PDP Context request to create message to network side second network element; Described network side second network element according to the urgent PDP Context of described urgent PDP Context request to create message establishing, obtain the PCC rule of emergency bearing, and carry out described PCC rule, return to described network side first network element and create the PDP Context response message.

2. method according to claim 1 is characterized in that, in the described second way:

Radio bearer is set up flow process and is initiated by described network side first network element;

Further comprise after described network side second network element is carried out described PCC rule: described network side second network element sends emergency bearing request to create message to described network side first network element.

3. method according to claim 1 and 2 is characterized in that, described Emmergency log-on request message is:

Carry the Attach Request message of urgent indicating bit;

Or, carry the tracing section updating request message of urgent indicating bit;

Or type of attachment is the Attach Request message of emergency attached;

Or updating type is the urgent tracing section updating request message that upgrades;

Or, emergency attached request message;

Or, urgent tracing section updating request message.

4. method according to claim 1 and 2 is characterized in that, in the described first kind of mode and the second way:

Described emergency user context is the user's context that is provided with urgent sign;

Described emergency bearing context is the bearer context that is provided with urgent sign.

5. method according to claim 4 is characterized in that, promptly being designated in the described emergency user context: urgent indicating bit and/or emergency user context type;

Promptly being designated in the described emergency bearing context: specific Access Point Name APN and/or urgent indicating bit and/or emergency bearing type.

6. method according to claim 1 is characterized in that, in described the third mode:

Described urgent PDP Context is the PDP Context that is provided with urgent sign.

7. method according to claim 6 is characterized in that, promptly being designated in the described emergency user context: urgent indicating bit and/or emergency user context type;

Promptly being designated in the described urgent PDP Context: specific Access Point Name APN and/or urgent indicating bit and/or urgent PDP Context type.

8. method according to claim 1 and 2 is characterized in that, in the described first kind of mode and the second way: described emergency bearing request to create message is:

Carry the establishment bearing request message of specific APN;

Or, carry the establishment bearing request message of urgent indicating bit;

Or bearer types is the establishment bearing request message of emergency bearing.

9. method according to claim 1 is characterized in that, in described the third mode:

Described urgent PDP Context request to create message is:

Carry the establishment PDP Context request message of specific APN;

Or, carry the establishment PDP Context request message of urgent indicating bit;

Or bearer types is the establishment PDP Context request message of emergency bearing.

10. method according to claim 1 and 2, it is characterized in that,, further comprised before described network side second network element sends a request message at described network side first network element: described network side first network element determines to create employed network side second network element of described emergency bearing.

11. method according to claim 10 is characterized in that, described network side first network element determines that the mode of creating employed network side second network element of described emergency bearing is:

In described IP-CAN network, use specific APN to identify the emergency bearing of being created that is carried as, dispose employed network side second network element of described specific APN or store employed network side second network element of described specific APN in described network side first network element in domain name server (DNS), network side first network element determines to create employed network side second network element of described emergency bearing according to described specific APN;

Or, in described IP-CAN network, use urgent indicating bit to identify the emergency bearing of being created that is carried as, employed network side second network element of emergency bearing is created in configuration in network side first network element, and described network side first network element determines to create employed network side second network element of described emergency bearing according to described configuration;

Or network side first network element is defined as creating employed network side second network element of described emergency bearing according to the positional information of UE with network side second network element.

12. method according to claim 11, it is characterized in that, described specific APN is carried on by UE and sends to described network side first network element in the Emmergency log-on request message, or determines when network side first network element judgement request message that UE sent is the Emmergency log-on request message.

13. method according to claim 1 and 2 is characterized in that, configuration and the corresponding PCC rule of emergency bearing in "Policy and Charging Rules Function entity PCRF;

The PCC rule that described network side second network element obtains emergency bearing is: described network side second network element sends strategy and the charging regulation request message that emergency bearing PCC rule is obtained in expression to described PCRF; Described PCRF returns to described network side second network element according to described request message and carries described and strategy and the charging regulation corresponding PCC rule of emergency bearing and give information.

14. method according to claim 13, it is characterized in that, increase the urgent indicating bit field of the internet multimedia subsystem IMS that is carried as emergency bearing that expression is set up in described strategy and charging regulation request message, strategy and charging regulation request message that emergency bearing PCC rule is obtained in described expression are: the value of the urgent indicating bit field of described IMS is set to strategy and the charging regulation request message of True;

Or, increase the bearer types field in described strategy and charging regulation request message, strategy and charging regulation request message that emergency bearing PCC rule is obtained in described expression are: described bearer types field is set to the strategy and the charging regulation request message of emergency bearing;

Or, increase business type field in described strategy and charging regulation request message, strategy and charging regulation request message that emergency bearing PCC rule is obtained in described expression are: described business type field is set to the strategy and the charging regulation request message of IMS urgency traffic.

15. method according to claim 1 and 2 is characterized in that, further the employed Application Function AF of configuration IMS urgency traffic address in described network side second network element;

Described network side second network element to the message that network side first network element returns is: the message that carries described AF address.

16. method according to claim 15, it is characterized in that, after described establishment and the corresponding emergency bearing of described Emmergency log-on request, further comprise: described network side first network element returns the Emmergency log-on that carries described AF address to described UE and accepts message.

17. method according to claim 1, it is characterized in that, after receiving the Emmergency log-on request message of UE, further comprise: described network side network element to described UE return the cycle that carries upgrade timer be set to 0 or the cycle upgrade timer and accepted message by the Emmergency log-on of deexcitation sign position.

18. method according to claim 1 and 2 is characterized in that, in the described first kind of mode and the second way:

Described IP-CAN network is the System Architecture Evolution SAE network under Mobility Management Entity MME and the user entity UPE separation architecture;

Described network side first network element is: MME;

Described network side second network element is: the user's face anchor point IASA between the UPE/ different access systems.

19. method according to claim 1 is characterized in that, in described first kind of mode:

Described IP-CAN network is the SAE network under MME and the UPE unification framework;

Described network side first network element is: MME/UPE;

Described network side second network element is: IASA.

20. method according to claim 1 is characterized in that, in described the third mode: described IP-CAN network is GPRS General Packet Radio System or UMTS universal mobile telecommunications system;

Described network side first network element is: universal grouping wireless business supporting node SGSN;

Described network side second network element is: ggsn GGSN.

21. the system of UE emergently to login IP-CAN network, this system comprise the network side network element in UE and the IP-CAN network, it is characterized in that,

Described network side network element is used for creating emergency bearing according to the Emmergency log-on request message that comes from described UE;

Wherein, the network side network element in the described system comprises network side first network element and network side second network element; Signalling exchange between described network side first network element and network side second network element comprises any one in following three kinds of situations:

First kind of situation: described network side first network element is used for creating emergency user context and emergency bearing context according to the Emmergency log-on request message that comes from described UE, and sends emergency bearing request to create message to described network side second network element; Described network side second network element is used for according to described emergency bearing request to create message establishing emergency bearing context, obtains the PCC rule of emergency bearing, and carry out described PCC rule, and is used for returning bearing response message to described network side first network element;

Second kind of situation: described network side first network element is used for creating the emergency user context according to the Emmergency log-on request message that comes from described UE, and transmits described Emmergency log-on request message to described network side second network element; Described network side second network element is used for creating the emergency bearing context, obtaining the PCC rule of emergency bearing according to described Emmergency log-on request message, and carries out described PCC rule, and is used for returning Emmergency log-on to described network side first network element and accepts message;

The third situation: described network side first network element is used for creating emergency user context and urgent PDP Context according to the Emmergency log-on request message that comes from described UE, and sends urgent PDP Context request to create message to described network side second network element; Described network side second network element, be used for according to the urgent PDP Context of described urgent PDP Context request to create message establishing, obtain the PCC rule of emergency bearing, and carry out described PCC rule, and be used for returning establishment PDP Context response message to described network side first network element.

22. system according to claim 21 is characterized in that, under described second kind of situation:

Described network side first network element is further used for initiating radio bearer and sets up flow process, and receives the emergency bearing request to create message that comes from described network side second network element;

Described network side second network element is further used for sending emergency bearing request to create message to described network side first network element.

23., it is characterized in that described UE is used for that urgent indicating bit is carried on Attach Request message and sends to described network side first network element as described Emmergency log-on request message according to claim 21 or 22 described systems;

Or, be used for that urgent indicating bit is carried on the tracing section updating request message and send to described network side first network element as described Emmergency log-on request message;

Or being used for type of attachment is that the Attach Request message of emergency attached sends to described network side first network element as described Emmergency log-on request message;

Or, be used for updating type is sent to described network side first network element for the urgent tracing section updating request message that upgrades as described Emmergency log-on request message;

Or, be used for emergency attached request message is sent to described network side first network element as described Emmergency log-on request message;

Or, be used for urgent tracing section updating request message is sent to described network side first network element as described Emmergency log-on request message.

24. system according to claim 21, it is characterized in that under described first kind of situation: the establishment bearing request message that described network side first network element is used for carrying specific APN sends to described network side second network element as described emergency bearing request to create message;

Or the establishment bearing request message that is used for carrying urgent indicating bit sends to described network side second network element as described emergency bearing request to create message;

Or being used for bearer types is that the establishment bearing request message of emergency bearing sends to described network side second network element as described emergency bearing request to create message.

25. system according to claim 21, it is characterized in that under described the third situation: the establishment PDP Context request message that described network side first network element is used for carrying specific APN sends to described network side second network element as described urgent PDP Context request to create message;

Or the establishment PDP Context request message that is used for carrying urgent indicating bit sends to described network side second network element as described urgent PDP Context request to create message;

Or being used for bearer types is that the establishment PDP Context request message of emergency bearing sends to described network side second network element as described urgent PDP Context request to create message.

26. system according to claim 22 is characterized in that, the establishment bearing request message that described network side second network element is used for carrying specific APN sends to described network side first network element as described emergency bearing request to create message;

Or the establishment bearing request message that is used for carrying urgent indicating bit sends to described network side first network element as described emergency bearing request to create message;

Or being used for bearer types is that the establishment bearing request message of emergency bearing sends to described network side first network element as described emergency bearing request to create message.

27., it is characterized in that described network side first network element is further used for determining to create employed network side second network element of described emergency bearing according to claim 21 or 22 described systems.

28. system according to claim 27, it is characterized in that, described network side first network element is used to dispose employed network side second network element of specific APN, and is used for determining employed network side second network element of the described emergency bearing of described establishment according to described specific APN;

Or, be used for obtaining employed network side second network element of the described emergency bearing of described establishment from DNS according to specific APN;

Or, be used for configuration and create employed network side second network element of emergency bearing, and be used for determining to create employed network side second network element of described emergency bearing according to described configuration;

Or, be used for determining to create employed network side second network element of described emergency bearing according to the positional information of UE.

29. according to claim 21 or 22 described systems, it is characterized in that, further comprise PCRF in the described system;

Described PCRF, be used for configuration and the corresponding PCC rule of emergency bearing, and obtain the strategy and the charging regulation request message of emergency bearing PCC rule according to the expression that comes from network side second network element, the corresponding PCC rule of described emergency bearing is carried on strategy and charging regulation sends to described network side second network element in giving information;

Described network side second network element, be used for sending strategy and the charging regulation request message that emergency bearing PCC rule is obtained in expression, and reception comes from, and carrying of described PCRF is described to give information with strategy and the charging regulation corresponding PCC rule of emergency bearing to described PCRF.

30., it is characterized in that described network side second network element is further used for disposing the employed AF of IMS urgency traffic address according to claim 21 or 22 described systems;

Described network side second network element is further used for described AF address is carried on described in the message that network side first network element returns.

31. system according to claim 30 is characterized in that, described network side first network element is further used for returning the Emmergency log-on that carries described AF address to described UE and accepts message.

32. system according to claim 21 is characterized in that, under described first kind of situation and second kind of situation:

Described network side network element is further used for returning the cycle that carries to described UE and upgrades timer and be set to 0, and perhaps the cycle upgrades timer and accepted message by the Emmergency log-on of deexcitation sign position.

33. system according to claim 21 is characterized in that, under described first kind of situation and second kind of situation:

Described IP-CAN network is the SAE network under MME and the UPE separation architecture;

Described network side first network element is: MME;

Described network side second network element is: UPE/IASA.

34. system according to claim 21 is characterized in that, under described first kind of situation:

Described network side first network element is: MME/UPE;

Described network side second network element is: IASA.

35. system according to claim 21 is characterized in that, under described the third situation:

Described IP-CAN network is GPRS General Packet Radio System or UMTS universal mobile telecommunications system;

Described network side second network element is: ggsn GGSN.

36. network side first network element is used for the system of UE emergently to login IP-CAN network, this network side first network element comprises first interface module and the first load creating module, it is characterized in that,

The described first load creating module is used for creating emergency bearing according to the Emmergency log-on request message that comes from described first interface module;

Annexation between described first interface module and the first load creating module comprises any one in following three kinds of situations:

First kind of situation: the described first load creating module is used to create emergency user context and emergency bearing context, and sends emergency bearing request to create message by described first interface module to network side second network element; Described first interface module is used for sending emergency bearing request to create message to network side second network element, and receives the bearing response message that comes from described network side second network element;

Second kind of situation: the described first load creating module is used to create the emergency user context, and transmits described Emmergency log-on request message by described first interface module to network side second network element; Described first interface module is used for sending described Emmergency log-on request message to network side second network element, and receives the Emmergency log-on come from described network side second network element and accept message;

The third situation: the described first load creating module is used to create emergency user context and urgent PDP Context, and sends urgent PDP Context request to create message by described first interface module to network side second network element; Described first interface module is used for sending described urgent PDP Context request to create message to network side second network element, and receives the establishment PDP Context response message that comes from described network side second network element.

37. network side first network element according to claim 36 is characterized in that, described network side first network element further comprises: the network side second network element determination module;

The described network side second network element determination module is used for determining to create employed network side second network element of described emergency bearing, and notifies described first interface module with determined network side second network element;

Described first interface module, network side second network element that is used for being notified to the described network side second network element determination module sends described request message.

38. network side first network element according to claim 36, it is characterized in that, described first interface module, be used to receive the message that carries the employed AF of IMS urgency traffic address that comes from described network side second network element, and described AF address is sent to the described first load creating module;

The described first load creating module is used for that described AF address is carried on Emmergency log-on and accepts message, sends to described UE by described first interface module.

39. network side first network element according to claim 36, it is characterized in that, the described first load creating module, be further used for by described first interface module to described UE return the cycle that carries upgrade timer be set to 0 or the cycle upgrade timer and accepted message by the Emmergency log-on of deexcitation sign position.

40. network side first network element according to claim 36 is characterized in that, under described first kind of situation: described network side first network element is MME or MME/UPE.

41. network side first network element according to claim 36 is characterized in that, under described second kind of situation: described network side first network element is MME.

42. network side first network element according to claim 36 is characterized in that, under described the third situation: described network side first network element is SGSN.

43. network side second network element, the system that is used for UE emergently to login IP-CAN network, this network side second network element comprises second interface module and the second load creating module, it is characterized in that the annexation between described second interface module and the second load creating module comprises any one in following three kinds of situations:

First kind of situation: described second interface module is used to receive the emergency bearing request to create message that comes from network side first network element, and described emergency bearing request to create message is sent to the described second load creating module; The described second load creating module, be used for according to described emergency bearing request to create message establishing emergency bearing context, obtain the PCC rule of emergency bearing, and carry out described PCC rule, and return bearing response message to described network side first network element by described second interface module;

Second kind of situation: described second interface module is used to receive the Emmergency log-on request message that comes from network side first network element, and described Emmergency log-on request message is sent to the described second load creating module; The described second load creating module, be used for creating the emergency bearing context, obtaining the PCC rule of emergency bearing according to described Emmergency log-on request message, and carry out described PCC rule, and return Emmergency log-on by described second interface module to described network side first network element and accept message;

The third situation: described second interface module is used to receive the urgent PDP Context request to create message that comes from network side first network element, and described urgent PDP Context request to create message is sent to the described second load creating module; The described second load creating module, be used for according to the urgent PDP Context of described urgent PDP Context request to create message establishing, obtain the PCC rule of emergency bearing, and carry out described PCC rule, and return establishment PDP Context response message to described network side first network element by described second interface module.

44., it is characterized in that described network side second network element further comprises: memory module according to described network side second network element of claim 43;

Described memory module is used to store the employed AF of IMS urgency traffic address, and is used for by described second interface module described AF address being carried on the described message of returning to network side first network element and sends to described network side first network element.

45., it is characterized in that under described first kind of situation: described network side second network element is UPE/IASA or IASA according to described network side second network element of claim 43.

46., it is characterized in that under described second kind of situation: described network side second network element is UPE/IASA according to described network side second network element of claim 43.

47., it is characterized in that under described the third situation: described network side second network element is GGSN according to described network side second network element of claim 43.