CN101296504A - Method, system and device for implementing IP multimedia subsystem service in roaming network - Google Patents
Method, system and device for implementing IP multimedia subsystem service in roaming network Download PDFInfo
- Publication number
- CN101296504A CN101296504A CN 200710101552 CN200710101552A CN101296504A CN 101296504 A CN101296504 A CN 101296504A CN 200710101552 CN200710101552 CN 200710101552 CN 200710101552 A CN200710101552 A CN 200710101552A CN 101296504 A CN101296504 A CN 101296504A
- Authority
- CN
- China
- Prior art keywords
- network
- user terminal
- ims
- gateway
- address information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method for realizing IP multimedia services in a roaming network, which comprises the following steps: when an IP multimedia system (IMS) is registered by a user end (UE) in a roaming network, a service network of IMS services of the UE is determined by the roaming network according to the contract information of an IMS user of the UE and the strategy of an operator; P-CSCF address information of the service network is acquired by the roaming network and is sent to the UE; the UE utilizes the P-CSCF address information to carry out IMS registration and visit the services. Furthermore, the invention also discloses a communication system and a communication system gateway. By adopting the invention, the gateway of the roaming network makes a decision according to the IMS contract information of the user and the strategy of the operator, determines the service network of the UE, and obtains the P-CSCF address information of the service network, so the UE can carry out the IMS services in the roaming network.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method, system and device of realizing IP Multimedia System (IMS) business at roaming network.
Background technology
At present, third generation partner program (3GPP) tissue has been set up Long Term Evolution project (LTE), and its main purpose is to strengthen the 3GPP system to satisfy the IP operation flow that increases rapidly, and the employed packet-switch technology of 3G mobile network is strengthened.Comprising: improve performance, reduce time delay, improve speed, elevator system capacity and covering reduce the overall cost of operator etc.Because IP-based 3GPP business will be carried on multiple access technology, therefore the seamless access mechanism of different Access Networks is important function.
In the 3GPP evolvement network, according to network architecture part (SAE) and wave point part.SAE comprises system performance end to end, relates to the core net characteristic and how the multiple IP based Access Network inserts core net.
The block core (EPC) that bigger oval frame of broken lines is an evolvement network among Fig. 1.Wherein, SAE gateway (GW) has the function of anchor point between access net system (IASA, Inter Access System Anchor), comprises service (Serving) SAE GW and PDN SAE GW.Serving SAE GW is as the gateway of termination EUTRAN interface, bear between the 3GPP network and switch anchor point, also be to switch anchor point between evolution base station (eNodeB), under roaming scence, also bear between local 3GPP and non 3GPP network when visit public land telephone network (VPLMN) inserts non-(non) 3GPP Access Network and switch anchor point; Public data network (PDN) SAE GW is the gateway node of the interface SGi between termination SAE network and the PDN, also has user's face anchor point ground function between 3GPP network and non 3GPP network.The PDP Context of Mobility Management Entity (MME) management and stored user terminal (UE) for UE distributes temporary mark (ID), also carries out authentication and authorization to UE.2G/3G Access Network (RAN) inserts SAE EPC by SGSN, LTEEUTRAN user's face directly inserts SAE EPC, non 3GPP Access Network is divided into Trusted (for example WiMax) and Untrusted (for example WLAN), Trusted inserts SAE EPC by S2a, and Untrusted insert SAE EPC through ePDG by S2b.
Along with the development of broadband network, mobile communication not only is confined to traditional voice communication, and can be in conjunction with multiple media business such as audio frequency, video, picture and texts.Multiple media business by with present that business (presence), short message, webpage (WEB) are browsed, the combining of data service such as locating information, propelling movement business (PUSH) and file-sharing, can satisfy user's multiple demand.
Under the promotion of several data service application, normal structure such as 3GPP and 3GPP2 has all successively been released the IMS framework, purpose is to use a kind of standardization open architecture to realize diversified multimedia service application in the mobile network, offers more selection of user and abundanter impression.
At 3GPP version 5 (R5, Release) stage, introduced IMS, IMS is superimposed upon on the packet field network, is made up of CCF (CSCF), MGCF (MGCF), media resource function (MRF), Interconnection Border Control Function (IBCF) and home signature user server functional entitys such as (HSS).Wherein CSCF can be divided into serving CSCF (S-CSCF), proxy CSCF (P-CSCF) and three logic entities of inquiry CSCF (I-CSCF) again.S-CSCF is the service switching center of IMS, carries out session control, and peace preservation association's speech phase is in charge of user profile, produces charge information etc.; P-CSCF is the access point that the user inserts IMS, finishes user's registration, is responsible for service quality (QoS) control and safety management etc.; I-CSCF is responsible for the intercommunication between the IMS territory, and network topology and configuration are externally hidden in distribution and the selection of management S-CSCF, produce metering data etc.The MGCF control gateway realizes the intercommunication of IMS and other network.MRF provides media resource.Attaching position register (HSS) storage user's subscription data and configuration information etc.
On the packet network that the IMS network of 3GPP definition also can be applied to define among the 3GPP2, provide the intercommunication with the polytype network, realize and use the independence of terminal type.Therefore do not limit IMS here and only be applied in relevant network of 3GPP and the application, the access network of other types and the business of bearer network also can realize with the IMS framework with using.
In 3GPP R8 and later version, emphasize by roaming place local gateway (Local Breakout) it is a kind of mode of roaming user data route commonly used.The user uses the IMS business both can visit the IMS business of HPLMN under roaming scence, i.e. visit ownership P-CSCF, and it is non-roaming to belong to IMS; Also can visit the IMS business of VPLMN, i.e. visit visit P-CSCF belongs to the IMS roaming.Therefore, for the user terminal of just having started shooting, do not provide at present the scheme of the IMS business which service network user terminal use in the roaming place.
Summary of the invention
The embodiment of the invention provides a kind of and realizes the method, system and device of IP multimedia service at roaming network, in order to solving in the prior art user terminal when roaming network carries out the IMS registration, and how the to make a strategic decision problem of service network of this user terminal of roaming network.
A kind of method in roaming network realization IP Multimedia System business that the embodiment of the invention provides may further comprise the steps:
User terminal is when roaming network registration IP Multimedia System IMS is professional, and described roaming network is defined as the service network that described user terminal provides the IMS business according to IMS user signing contract information, the carrier policy of this user terminal;
Described roaming network obtains the P-CSCF address information of described service network, and described P-CSCF address information is sent to described user terminal;
Described user terminal utilizes described P-CSCF address information to carry out the registration of IMS business.
A kind of communication system that the embodiment of the invention provides comprises first network and second network, and described first network comprises that strategic decision-making unit and information obtains transmitting element, wherein,
Described service network decision package, be used to receive the user terminal that belongs to described second network before first network carries out the IMS registration, according to the service network of the IMS user signing contract information of this user terminal, IMS business that carrier policy is determined described user terminal;
Described information is obtained transmitting element, is used to obtain the P-CSCF address information of described service network, and described P-CSCF address information is offered described user terminal carries out IMS registration.
A kind of communication system gateway that the embodiment of the invention provides comprises:
Decision package is when receiving the activation PDP Context request that roaming user terminal is initiated, according to the service network of the IMS user signing contract information of this user terminal, IMS business that carrier policy is determined described user terminal;
Information is obtained transmitting element, is used for obtaining from described service network the P-CSCF address information of this user terminal; Described P-CSCF address information is sent to described user terminal.
A kind of communication system gateway that the embodiment of the invention provides comprises:
Receiving element is used to receive the request of obtaining the P-CSCF address information of user terminal roaming network;
Information is obtained transmitting element, is used for obtaining described user terminal in the P-CSCF of home network address information, and will offer described roaming network to described P-CSCF address information.
A kind of Mobility Management Entity that the embodiment of the invention provides, this entity comprises:
Receiving element is used to receive the activation PDP Context request that roaming user terminal sends, and wherein contains the professional indication of IMS of this user terminal;
Judging unit is used for determining gateway according to the professional indication of the IMS of described user terminal, the IMS user signing contract information of this user terminal, carrier policy;
Transmitting element is used for should activating the PDP Context request and sending to this local network gateway when the gateway of determining is the local network gateway, otherwise, this this activation PDP Context request is sent to this user terminal home network gateway.
In embodiments of the present invention, roaming network can be made a strategic decision according to user's IMS subscription information, the carrier policy of the user terminal of roaming in this locality, determine the service network of the IMS business of this user terminal, to determine the using P-CSCF of which network to insert IMS, and obtaining the P-CSCF address information of this service network, user terminal utilizes the P-CSCF address information of the service network that roaming network provides to realize the IMS business.Use the embodiment of the invention, roaming network can be determined service network according to certain strategy, and, service network can be the roaming networking, it also can be home network, therefore network side is more flexible for the mode of the user terminal selecting service network of generation roaming, and operator can also determine service network according to various different demands and user's preference.
Description of drawings
Fig. 1 is the network configuration of SAE;
Fig. 2 is the schematic flow sheet of the inventive method embodiment one;
Fig. 3 is the schematic flow sheet of the inventive method embodiment two;
Fig. 4 is the schematic flow sheet of the inventive method embodiment three;
Fig. 5 is the structural representation of system embodiment one of the present invention;
Fig. 6 is the example structure schematic diagram of communication system gateway of the present invention;
Fig. 7 is another example structure schematic diagram of communication system gateway of the present invention;
The MME structural representation that Fig. 8 provides for the embodiment of the invention.
Embodiment
In embodiments of the present invention, user terminal is before roaming network carries out the IMS registration, roaming network is adjudicated according to IMS user signing contract information, the carrier policy of this user terminal, be defined as the service network of the IMS business of described user terminal, obtain the P-CSCF address information of this service network, and described P-CSCF address information is sent to described user terminal; Described user terminal utilizes described P-CSCF address information to carry out IMS registration and visit IMS business.It can be roaming network gateway or MME/SGSN that above-mentioned decision steps and acquisition provide the execution entity of P-CSCF address information of the service network of IMS service.
Certainly, if user terminal adhering to/the IP-CAN loading establishing process in, the professional indication of described user IMS is sent to described roaming network gateway or MME/ Serving GPRS Support Node (SGSN), and then roaming network gateway or MME/SGSN can be defined as the service network that described user terminal provides the IMS business according to the professional indication of described IMS, the IMS user signing contract information of this user terminal, carrier policy.IMS business that the user is to use Visited PLMN to provide can be provided still be the indication of the IMS business that Home PLMN provides in the CAMEL-Subscription-Information, promptly this information also can directly determine to provide the network of IMS business.
Referring to shown in Figure 2, the user terminal of the inventive method embodiment realizes that in roaming network the flow process of IMS business is as follows:
Step 200: user terminal adheres at roaming network/the IP-CAN loading establishing process in, the professional indication of IMS is sent to the roaming network gateway.
Here, the professional indication of IMS can comprise the urgency traffic sign, or comprises the indication information that whether uses ownership place that the IMS business is provided.
Step 201: user terminal is when the roaming network registered ims is professional, and described roaming network gateway is defined as the service network that described user terminal provides the IMS business according to the professional indication of described IMS, the IMS user signing contract information of this user terminal, carrier policy.
For described user terminal provides the service network of IMS business can be the roaming network of this user terminal, also can be the home network of this user terminal.That is to say,, can provide IMS business for this user terminal by the roaming network of user terminal, also can provide IMS business for this user terminal by the home network of user terminal.Carrier policy can comprise the carrier policy of ownership place and/or roaming place.The policy information that may comprise the service network of the user terminal of how making a strategic decision that operator is pre-configured in the carrier policy, may comprise also whether roaming network supports information such as IMS business, for example, if roaming network is not supported the IMS business, then provide the user IMS business of needs by belonging area network.
Step 202: described roaming network gateway obtains the described P-CSCF address information that the service network of IMS business is provided, and described P-CSCF address information is sent to described user terminal.
If described service network is the home network of this user terminal, then described roaming network gateway can obtain the P-CSCF address information of described service network in several ways from home network.
Such as: can be user terminal configuration P-CSCF address information in advance in the HSS/ of home network authentication (AAA) server, the roaming network gateway can be retrieved as the P-CSCF address information of user terminal configuration from the HSS/AAA server of home network.Specifically can realize like this: pre-configured P-CSCF address information in the HSS/AAA server; When the roaming network gateway need obtain the P-CSCF address information of user terminal, the user ID of this user terminal is sent to the SGSN/MME of roaming network, then this SGSN/MME obtains the P-CSCF address information from the HSS/AAA server of this user terminal home network, and this P-CSCF address information is offered this roaming network gateway.Roaming gateway also can directly obtain the P-CSCF address information of user attaching network from the HSS/AAA server.
For another example, can from the home network gateway of this user terminal, obtain the P-CSCF address information by the roaming network gateway.Specifically can realize like this: described roaming network gateway sends the request of the P-CSCF address information of obtaining this user terminal home network to the home network gateway of this user terminal; Described home network gateway obtains the P-CSCF address information of the home network of this user terminal, and should belong to the P-CSCF address information and send to described roaming network gateway.Here, the roaming network gateway can obtain the request of this user terminal ownership P-CSCF address information by the roaming interface between roaming PLMN gateway and the ownership place PLMN gateway.
The roaming network gateway can send described request of obtaining this user terminal home network P-CSCF address information in several ways.Such as adopting the GPRS mode, promptly between home domain gateway and roaming network gateway, transmit the P-CSCF address information by message of redetermination, or expand interface message between original home domain gateway and the roaming network gateway, and carry the request and the response of the P-CSCF address information that need obtain the user terminal home network by these message.And after the home network gateway receives this message, identifying needs to obtain the P-CSCF address information of this user terminal in home network, then from home network, obtain the P-CSCF address information of this user terminal home network, it can be the internal configuration information of home network gateway that the home network gateway obtains home network P-CSCF address approach, and specific implementation is with reference to existing standard.
Certainly, the roaming network gateway can also send described request of obtaining this user terminal ownership P-CSCF address information by DHCP (DHCP) mode, that is: at roaming gateway structure DHCP request message, send the request of the P-CSCF address information of obtaining this user terminal home network to the home network gateway by the DHCP request, maybe when the DHCP request message of receiving user terminal obtains this user terminal ownership P-CSCF address information, as DHCP proxy, this request message is transmitted to the home network gateway.After the home network gateway is received and is used to obtain the DHCP request message of this user terminal ownership P-CSCF address information, after thinking that this request is the request of obtaining the P-CSCF address information of user terminal, then can directly utilize prior art to obtain this user terminal ownership P-CSCF address information, and the P-CSCF address information of this user terminal home network is returned to the roaming network gateway.
Step 203: user terminal utilizes described P-CSCF address information to carry out IMS registration and visit IMS business.
Here, described P-CSCF address information can comprise more than one P-CSCF address domain name and name server (DNS) address, also can include only the P-CSCF address list.
If the P-CSCF address information includes only the P-CSCF address list, then user terminal can select a P-CSCF address to carry out IMS registration and visit IMS business from the P-CSCF address list in step 203.
When if the P-CSCF address information comprises more than one P-CSCF domain name and dns server address, in step 203, user terminal need be selected a P-CSCF, utilize dns server address from dns server, to obtain the P-CSCF address of the P-CSCF domain name correspondence chosen, and then carry out IMS registration and visit IMS business.
Lift specific embodiment below and further describe the technical scheme of the inventive method in conjunction with Fig. 3 and Fig. 4.Wherein, in below describing, roaming network is called as Visited PLMN, home network is called as Home PLMN, and embodiment illustrated in fig. 3 is the mode of obtaining the P-CSCF address information in the GPRS mode, in this mode, if it is Home PLMN that the Visited PLMN gateway is determined the service network of user terminal, then need to send to the Home PLMN gateway request of the P-CSCF address information that obtains Home PLMN by the GPRS signaling message; Embodiment illustrated in fig. 4 is the mode of obtaining the P-CSCF address information in the DHCP mode, in this mode, if it is Home PLMN that the Visited PLMN gateway is determined the service network of user terminal, then need be in Visited PLMN gateway structure DHCP function, send the request of obtaining this user terminal ownership P-CSCF address information by the DHCP function to the Home PLMN network gateway, or directly will send to the Home PLMN gateway from the request of obtaining this UE ownership P-CSCF address information under the DHCP mode of UE.
Referring to shown in Figure 3, the detailed process of present embodiment is as follows:
Step 301:UE adheres in Visited PLMN/the IP-CAN loading establishing process in, the SGSN/MME in Visited PLMN sends the activation PDP Context request (activate PDP Context Request) of the professional indication of IMS that carries UE.
Here, the professional indication of the IMS of UE can be that (Emergency Call, EMC) sign also can be to inform whether UE uses the indication information of the IMS business that Home PLMN provides in urgent call.
Step 302: this SGSN/MME is after receiving activate PDP Context Request, judge the professional indication of the IMS that wherein whether contains UE, and according to whether containing the professional indication of IMS, and the professional indication information of concrete IMS, selecting the Visited PLMN gateway still is the Home PLMN gateway, and sends the establishment PDP Context request that carries the professional indication of IMS to selected gateway.
The PLMN gateway can be GGSN or SAE GW.
Select the detailed process of gateway as follows:
If do not carry the professional indication of IMS among the activate PDP Context Request, then, select GGSN/SAE GW, thereby utilize selected GGSN/SAE GW to create PDP Context according to the selection flow process of the GGSN/SAE GW in the existing standard;
If carry the professional indication of the IMS of UE among the activate PDP Context Request, and the professional indication of this IMS is the EMC sign, then sets up flow process according to emergence call service of the prior art, carries out subsequent treatment.In subsequent treatment, after general SGSN/MME discerns the professional indication of this IMS, can select (Emergency dedicated) APN/GGSN that urgency traffic is provided with that aims at of Visited PLMN;
If carry the professional indication of the IMS of UE among the activate PDP Context Request, and this IMS business is designated as the indication information that expression UE uses local IMS business, then can preferentially select the Visited PLMN gateway according to carrier policy;
If carry the professional indication of the IMS of UE among the activate PDP Context Request, and this IMS business is designated as the indication information that the IMS business of Home PLMN is used in expression, or do not have this indication information, then can preferentially select the Home PLMN gateway according to carrier policy.
Step 303: if SGSN/MME has selected the Visited PLMN gateway in step 302, whether the Visited PLMN gateway supports IMS to determine the service network of the IMS business of this UE according to the professional indication of described user's IMS, user's IMS subscription information, carrier policy and Visited PLMN when receiving (may carry the professional indication of IMS of UE) establishment PDP Context request.
Here, also can be that MME/SGSN is defined as the service network that this UE provides the IMS business according to the professional indication of user's IMS, user's IMS subscription information, carrier policy, and this MME/SGSN determined the result, be this UE the indication information of the service network of IMS business is provided, send to the Visited PLMN gateway, Visited PLMN with the indication of this MME/SGSN as a foundation that is used to select provide the service network of IMS business.
Here, when angelica PLMN and Visited PLMN can provide IMS professional for this UE, can select service network according to the professional indication of user IMS.If the Visited PLMN gateway determines to provide the P-CSCF of IMS service to belong to Home PLMN, then execution in step 304, if determine that P-CSCF belongs to Visited PLMN, then execution in step 307.
If SGSN/MME has selected the Home PLMN gateway in step 302, be that GTP is built to the Home PLMN gateway, then the Home PLMN gateway carries out the constructive process of PDP Context according to existing procedure, and the P-CSCF address list that obtains Home PLMN according to the method for internal configurations in this process offers UE, UE uses this P-CSCF address list to carry out IMS business, process ends.At this moment, ignore the indication that use Visited PLMN that UE brings up provides the IMS business.
Step 304: the Visited PLMN gateway sends the request of the P-CSCF address information that obtains Home PLMN to the Home PLMN gateway by signaling message.
Step 305: after the Home PLMN gateway was received described signaling message, the method for use internal configurations was obtained the P-CSCF address list of Home PLMN.
Step 306: the Home PLMN gateway sends to the Visited PLMN gateway with the P-CSCF address list of this Home PLMN, and execution in step 308 then:
Step 307: the Visited PLMN gateway obtains the P-CSCF address list of roaming place IMS network.
If carry the EMC sign in the PDP Context request, the Visited PLMN gateway is searched the P-CSCF address list that is applicable to EMC according to this EMC sign; If the IMS service that MME/SGSN decision-making indication or the decision-making of Visited PLMN gateway use Visited PLMN to provide, then the Visited PLMN gateway uses the method for internal configurations to obtain the IMS network P-CSCF address list of Visited PLMN, and execution in step 308 then.
The PLMN gateway can be GGSN, also can be SAE GW.
Here, for the mode of the P-CSCF address list of Visited PLMN gateway requests Home PLMN, can be following several mode:
Such as: can be by the GGSN/SAE of the roaming interface between the PLMN gateway to Home PLMN
The GW application, homing GGSN/SAE GW obtains the method for the P-CSCF tabulation of ownership place can carry out according to existing standard; Can be by send DHCP request, the P-CSCF address information of request ownership place to Home PLMN GW; Also can be the P-CSCF address information of the pre-configured home network of this user terminal, and be kept in HSS, aaa server or other entity, then with P-CSCF address information to HSS, aaa server or other entity requests Home PLMN of Home PLMN.
Step 308～309: the Visited PLMN gateway is given UE by activating the PDP Context response with the P-CSCF address list; UE carries out the IMS business at Visited PLMN by the P-CSCF address list that obtains.
Figure 4 shows that the idiographic flow schematic diagram when UE obtains the P-CSCF address list by the DHCP mode.Referring to shown in Figure 4, the detailed process of present embodiment is as follows:
Step 401:UE sends the DHCP request to the Visited PLMN gateway, and portability has the professional indication of IMS of UE in the request, and the professional indication of this IMS comprises the EMC sign, or UE uses the indication information of the IMS business of which PLMN, to obtain the P-CSCF address information.The PLMN gateway can be GGSN, also can be SAE GW or DHCP Server.
Step 402: the Visited PLMN gateway decides the service network of the IMS business of this UE according to the professional indication of described IMS, user's IMS subscription information, carrier policy, that is: the P-CSCF of use Visited PLMN still is that the P-CSCF of Home PLMN provides IMS business.
If be defined as this UE the service network of IMS business being provided is Home PLMN, then execution in step 403; If be defined as this UE the service network of IMS business being provided is Visited PLMN, then execution in step 406.
Step 403: the Visited PLMN gateway can be used as the agency, sends the request of the P-CSCF address information that obtains Home PLMN to the Home PLMN gateway.
The mode that the Visited PLMN gateway obtains the P-CSCF address information of Home PLMN can have multiple mode to realize.Such as: can obtain by GGSN or the SAE GW of the roaming interface between the PLMN gateway from Home PLMN; Perhaps ask the GGSN of Home PLMN or SAEGW to obtain by sending a DHCP; Also can be P-CSCF address information from Home PLMN to other network entities of Home PLMN that obtain, as obtaining from network entities such as ownership place HSS, PCRF; Also can send the P-CSCF address information of DHCP acquisition request Home PLMN to certain Dynamic Host Configuration Protocol server of Home PLMN, the address of ownership place Dynamic Host Configuration Protocol server is wanted pre-configured or is obtained the P-CSCF address information by other modes at this moment.
Step 404: the Home PLMN gateway uses the method for internal configurations, obtains the P-CSCF address information of Home PLMN with prior art.
Step 405: the Home PLMN gateway returns to the gateway of Visited PLMN, execution in step 407 with the P-CSCF address information of Home PLMN.
Step 406: the Visited PLMN gateway uses the method for internal configurations, with the P-CSCF address information under the prior art acquisition Visited PLMN.
Step 407: the Visited PLMN gateway sends to UE with the P-CSCF address information that gets access to.The P-CSCF address information can comprise the P-CSCF address list, also can comprise P-CSCF domain name and dns server address.
Step 408: if the P-CSCF address information comprises the P-CSCF address list, then UE selects a P-CSCF address to initiate to carry out IMS registration and visit IMS business from the P-CSCF address list; If the P-CSCF address information comprises P-CSCF domain name rather than P-CSCF address, choose P-CSCF after, UE need utilize dns server address the domain name mapping of P-CSCF, obtains corresponding P-CSCF address.
Referring to shown in Figure 5, the system of the embodiment of the invention comprises first network 51, second network 52 and MME entity 55.First network 51 is the roaming network of user terminal, and second network is the home network of this user terminal.
Described first network 51 comprises that service network decision package 57 and information obtains transmitting element 58, wherein,
Described service network decision package 57, be used to receive the user terminal that belongs to described second network when first network carries out the IMS registration, according to the service network of the IMS user signing contract information of this user terminal, IMS business that carrier policy is determined described user terminal;
Certainly, described service network decision package 57 can also according to the IMS user signing contract information of described user terminal, carrier policy and from the IMS of described user terminal professional indication determine the service network of the IMS business of described user terminal.
Described information is obtained transmitting element 58, is used to obtain the P-CSCF address information of described service network, and described P-CSCF address information is offered described user terminal carries out IMS registration.
Described service network decision package 57 and described information are obtained first gateway that transmitting element 58 can be arranged in described first network, perhaps, implement sharp as another, described service network decision package 57 can be arranged in the Mobility Management Entity 55 of described first network, and described information is obtained first gateway 53 that transmitting element 58 can be arranged in described first network.Described service network decision package 57 and described information are obtained the situation that transmitting element 58 is arranged in first gateway 53 of described first network shown in Fig. 5.
If described service network decision package 57 and described information are obtained first gateway 53 that transmitting element 58 is arranged in described first network, then described first gateway 53, be used for when described user terminal carries out the IMS registration in this locality, when promptly receiving this activation PDP Context request, according to the service network of the IMS user signing contract information of this user terminal, IMS business that carrier policy is determined described user terminal; Obtain the P-CSCF address information of described service network, and described P-CSCF address information is offered described user terminal carry out the IMS business.
Described second network 52 comprises: second gateway 54, be used for request according to described first gateway 53, and provide the P-CSCF address information of described user terminal in self network to described first gateway 53.
Described P-CSCF address information comprises the P-CSCF address list, or comprises P-CSCF address domain name and dns server address.
Referring to shown in Figure 6, first gateway 53 that the embodiment of the invention provides can comprise: decision package 61 and information are obtained transmitting element 62.
Wherein, decision package 61 is when receiving the activation PDP Context request that the user terminal that belongs to described second network sends, according to the service network of the IMS user signing contract information of this user terminal, IMS business that carrier policy is determined described user terminal; Information is obtained transmitting element 62, is used for obtaining from described service network the P-CSCF address information of this user terminal; Described P-CSCF address information is sent to described user terminal.
Described information is obtained transmitting element 62 and is comprised: request unit 621 and transmission unit 622.
Wherein, request unit 621 is used for sending the request of this user terminal in the P-CSCF of second network address information of obtaining to second network; Transmission unit 622, this user terminal that is used for described second network is returned sends to described user terminal in the P-CSCF of second network address information.
Referring to shown in Figure 7, described second gateway 52 comprises that receiving element 71 and information obtains transmitting element 72.Wherein, receiving element 71 is used to receive the request of obtaining the P-CSCF address information of user terminal roaming network; Information is obtained transmitting element 72, is used to obtain described user terminal in the P-CSCF of home network address information, and will offer described roaming network to described P-CSCF address information.
Referring to shown in Figure 8, a kind of MME that the embodiment of the invention provides comprises:
Receiving element 81 is used to receive the activation PDP Context request that roaming user terminal sends, and wherein contains the professional indication of IMS of this user terminal;
Judging unit 82 is used for determining gateway according to the professional indication of described IMS, the IMS user signing contract information of this user terminal, carrier policy;
Transmitting element 83 is used for should activating the PDP Context request and sending to this local network gateway when the gateway of determining is the local network gateway, otherwise, should activate the PDP Context request and send to this user terminal home network gateway.
In embodiments of the present invention, roaming network can be made a strategic decision according to user's IMS subscription information, the carrier policy of the user terminal of roaming in this locality, determine the service network of the IMS business of this user terminal, to determine the using P-CSCF of which network to insert IMS, and obtaining the P-CSCF address information of this service network, user terminal utilizes the P-CSCF address information of the service network that roaming network provides to realize the IMS business.
Certainly, if use the P-CSCF of home network to carry out the IMS business, the embodiment of the invention also needs to obtain from home network the P-CSCF address information of home network.If adopt the GPRS mode, then need GPRS signaling message of redetermination or expand the request that existing GPRS signaling message carries the P-CSCF address information of obtaining home network and can realize request; If adopt the DHCP mode, do not need the home network gateway is changed, only need roaming network structure DHCP function, or the DHCP request of directly transmitting user terminal get final product, therefore this mode, the network gateway change is less.
In order better to satisfy user preference, when user terminal carries out the IMS register requirement or before, user terminal can send to the roaming network gateway with the professional indication of IMS, and then whether the roaming network gateway can support that IMS makes a strategic decision according to the professional indication of this IMS, user's IMS subscription information, carrier policy and roaming network.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (25)
1, a kind of method in roaming network realization IP Multimedia System business is characterized in that this method may further comprise the steps:
User terminal is when roaming network registration IP Multimedia System IMS is professional, and described roaming network is defined as the service network that described user terminal provides the IMS business according to IMS user signing contract information, the carrier policy of this user terminal;
Described roaming network obtains the proxy-call session control function P-CSCF address information of described service network, and described P-CSCF address information is sent to described user terminal;
Described user terminal utilizes described P-CSCF address information to carry out registration and the Operational Visit of IMS.
2, method according to claim 1 is characterized in that,, further comprises before roaming network carries out the IMS registration at described user terminal: the professional indication of the IMS of user terminal is sent to roaming network;
Then described roaming network is the service network according to the IMS user signing contract information of the professional indication of described IMS, this user terminal, IMS business that carrier policy is determined described user terminal.
3, method according to claim 2 is characterized in that, the professional indication of described IMS is to adhere to or the IP-CAN loading establishing process sends to described roaming network.
4, method according to claim 2 is characterized in that, the professional indication of described IMS comprises the urgency traffic sign, or comprises the indication information that whether uses ownership place that the IMS business is provided.
5, method according to claim 2, it is characterized in that, be defined as the service network that this user terminal provides the IMS business according to the professional indication of user's IMS, user's IMS subscription information, carrier policy by roaming network mobile management MME entity/service universal packet wireless business affair GPRS Support Node SGSN;
The roaming network gateway is made a strategic decision according to the service network indication that the IMS business is provided that described roaming network MME/SGSN determines, finally is defined as the service network that this user terminal provides the IMS business;
Carry out the P-CSCF address information that obtains described service network by described roaming network gateway again, and the step that described P-CSCF address information is sent to described user terminal.
6, method according to claim 1 is characterized in that, carries out the P-CSCF address information of determining described service network, obtaining described service network by the roaming network gateway, and the step that described P-CSCF address information is sent to described user terminal.
According to claim 5 or 6 described methods, it is characterized in that 7, if described service network is the home network of this user terminal, the step that then described roaming network obtains the P-CSCF address information of described service network comprises:
Described roaming network gateway sends the request of the P-CSCF address information of obtaining this user terminal home network to the home network gateway of this user terminal;
Described home network gateway obtains the P-CSCF address information of the home network of this user terminal, and this P-CSCF address information is sent to described roaming network gateway.
According to claim 5 or 6 described methods, it is characterized in that 8, if described service network is the home network of this user terminal, the step that then described roaming network obtains the P-CSCF address information of described service network comprises:
The roaming network gateway sends to roaming network mobile management MME entity with the user terminal identification of this user terminal;
Described roaming network MME entity obtains the P-CSCF address information of this user terminal identification correspondence from the attaching position register HSS/ authentication aaa server of this user terminal home network, and this P-CSCF address information is offered this roaming network gateway.
9, method according to claim 1 is characterized in that, described P-CSCF address information comprises the P-CSCF address list, or comprises P-CSCF address domain name and dns server address.
10, method according to claim 7 is characterized in that, described request of obtaining this user terminal ownership P-CSCF address information is the dynamic host configuration protocol DHCP request, or the GPRS signaling message.
11, method according to claim 1 is characterized in that, when described P-CSCF address information comprised P-CSCF address domain name and dns server address, then described user terminal utilized described P-CSCF address information to carry out the IMS business to comprise:
Described user terminal utilizes dns server address to obtain the P-CSCF address of described P-CSCF address domain name correspondence from dns server, and utilizes described P-CSCF address to carry out IMS registration and Operational Visit.
12, method according to claim 6 is characterized in that, described roaming network determines that this method further comprises before the service network of IMS business of described user terminal:
User terminal sends the PDP Context request that activates to roaming network MME entity;
Receive the MME entity of this activation PDP Context request, IMS user signing contract information, carrier policy according to this user terminal are determined gateway, if gateway is the roaming network gateway, then should activates the PDP Context request and send to this roaming network gateway.
13, method according to claim 12, it is characterized in that, comprise the professional indication of IMS in the request of described activation PDP Context, then described MME entity is determined gateway according to the professional indication of this IMS, the IMS user signing contract information of this user terminal, carrier policy.
14, a kind of communication system comprises first network and second network, it is characterized in that, described first network comprises that strategic decision-making unit and information obtains transmitting element, wherein,
Described service network decision package, be used to receive the user terminal that belongs to described second network before first network carries out the IMS registration, according to the service network of the IMS user signing contract information of this user terminal, IMS business that carrier policy is determined described user terminal;
Described information is obtained transmitting element, is used to obtain the P-CSCF address information of described service network, and described P-CSCF address information is offered described user terminal carries out IMS registration.
15, communication system according to claim 14 is characterized in that, described service network decision package and described information are obtained first gateway that transmitting element is arranged in described first network, or,
Described service network decision package is arranged in the Mobility Management Entity of described first network, and described information is obtained first gateway that transmitting element is arranged in described first network.
16, communication system according to claim 14 is characterized in that, when described service network was second network, described information acquisition unit comprised:
Request unit is used for sending the request of this user terminal in the P-CSCF of second network address information of obtaining to second network;
Transmission unit, this user terminal that is used for described second network is returned sends to described user terminal in the P-CSCF of second network address information.
17, communication system according to claim 14 is characterized in that, described second network comprises:
Second gateway is used for the request according to described first gateway, provides the P-CSCF address information of described user terminal in second network to described first gateway.
18, communication system according to claim 14, it is characterized in that described service network decision package is IMS user signing contract information, carrier policy according to described user terminal and the service network of determining the IMS business of described user terminal from the IMS business indication of described user terminal.
19, communication system according to claim 14 is characterized in that, described P-CSCF address information comprises the P-CSCF address list, or comprises P-CSCF address domain name and dns server address.
20, communication system according to claim 14 is characterized in that, this system further comprises:
Mobility Management Entity, when being used to receive the activation PDP Context request of the user terminal that belongs to described second network, IMS user signing contract information, carrier policy according to this user terminal are determined gateway, if gateway is the roaming network gateway, then should activate the PDP Context request and send to described first gateway, otherwise, this activation PDP Context request is sent to gateway in second network.
21, according to the described 20 described communication systems that require, it is characterized in that described Mobility Management Entity is arranged in SGSN.
22, a kind of communication system gateway is characterized in that, this gateway comprises:
Decision package is when receiving the activation PDP Context request that roaming user terminal is initiated, according to the service network of the IMS user signing contract information of this user terminal, IMS business that carrier policy is determined described user terminal;
Information is obtained transmitting element, is used for obtaining from described service network the P-CSCF address information of this user terminal; Described P-CSCF address information is sent to described user terminal.
23, gateway according to claim 22 is characterized in that, when described service network was the home network of described user terminal, described information acquisition unit comprised:
Request unit is used for sending the request of this user terminal in the P-CSCF of home network address information of obtaining to described home network;
Transmission unit, this user terminal that is used for described home network is returned sends to described user terminal in the P-CSCF of home network address information.
24, a kind of communication system gateway is characterized in that, this gateway comprises:
Receiving element is used to receive the request of obtaining the P-CSCF address information of user terminal roaming network;
Information is obtained transmitting element, is used for obtaining described user terminal in the P-CSCF of home network address information, and will offer described roaming network to described P-CSCF address information.
25, a kind of Mobility Management Entity is characterized in that, this entity comprises:
Receiving element is used to receive the activation PDP Context request that roaming user terminal sends, and wherein contains the professional indication of IMS of this user terminal;
Judging unit is used for determining gateway according to the professional indication of described IMS, the IMS user signing contract information of this user terminal, carrier policy;
Transmitting element is used for should activating the PDP Context request and sending to this local network gateway when the gateway of determining is the local network gateway, otherwise, this this activation PDP Context request is sent to this user terminal home network gateway.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710101552 CN101296504B (en) | 2007-04-26 | 2007-04-26 | Method, system and device for implementing IP multimedia subsystem service in roaming network |
| PCT/CN2008/070794 WO2008131681A1 (en) | 2007-04-26 | 2008-04-24 | A method, a system and an apparatus for implementing a service of ip multimedia subsystem in a visit network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710101552 CN101296504B (en) | 2007-04-26 | 2007-04-26 | Method, system and device for implementing IP multimedia subsystem service in roaming network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101296504A true CN101296504A (en) | 2008-10-29 |
| CN101296504B CN101296504B (en) | 2011-09-28 |
Family
ID=39925208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710101552 Active CN101296504B (en) | 2007-04-26 | 2007-04-26 | Method, system and device for implementing IP multimedia subsystem service in roaming network |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101296504B (en) |
| WO (1) | WO2008131681A1 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931900A (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Method and system for realizing services of IP multi-media subsystem network |
| WO2010148783A1 (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Service realization method and system for ip multimedia sub-system (ims) network, and enhanced mobile switching center |
| CN102130917A (en) * | 2011-03-28 | 2011-07-20 | 华为技术有限公司 | Methods for registering session initiation protocol (SIP) terminal and processing service and related equipment |
| WO2012163028A1 (en) * | 2011-10-28 | 2012-12-06 | 华为技术有限公司 | User equipment processing method, mobility management entity processing method, user equipment, and mobility management entity and communication system |
| CN103107975A (en) * | 2011-11-09 | 2013-05-15 | 中国移动通信集团公司 | Communication method and voice gateway supporting one-card multi-number mode |
| CN106911626A (en) * | 2015-12-22 | 2017-06-30 | 中国电信股份有限公司 | Access the method and device of VoLTE IMS networks |
| CN107113705A (en) * | 2015-09-30 | 2017-08-29 | 华为技术有限公司 | A kind of voice communication method and device |
| CN108235299A (en) * | 2016-12-21 | 2018-06-29 | 中国移动通信集团公司 | A kind of test method and device of VoLTE medium surfaces quality |
| CN108633327A (en) * | 2015-04-01 | 2018-10-09 | 瑞典爱立信有限公司 | IMS urgent calls for roaming UE |
| CN109039988A (en) * | 2017-06-08 | 2018-12-18 | 中国移动通信集团河北有限公司 | Register method, device and the equipment of IP multimedia subsystem |
| CN109417703A (en) * | 2016-06-30 | 2019-03-01 | 瑞典爱立信有限公司 | For the mobility forwarding IMS relevant information in S8HR to be used for lawful intercept |
| WO2019095379A1 (en) * | 2017-11-20 | 2019-05-23 | Oppo广东移动通信有限公司 | Service activation and deactivation method, device and computer storage medium |
| CN110661753A (en) * | 2018-06-30 | 2020-01-07 | 华为技术有限公司 | Network registration method, device and system |
| CN111010744A (en) * | 2018-10-08 | 2020-04-14 | 华为技术有限公司 | Method and device for establishing session and method and device for sending message |
| CN114173393A (en) * | 2021-12-15 | 2022-03-11 | 中国电信股份有限公司 | Access control method and device for visited network, electronic equipment and storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4032253A4 (en) | 2019-09-18 | 2023-08-30 | Telefonaktiebolaget LM Ericsson (publ.) | Method and apparatus for local application server discovery in mobile edge computing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0308980D0 (en) * | 2003-04-17 | 2003-05-28 | Orange Personal Comm Serv Ltd | Telecommunications |
| CN100488284C (en) * | 2006-01-26 | 2009-05-13 | 华为技术有限公司 | Roaming user data route optimizing method in 3GPP evolution network |
| CN1859412B (en) * | 2006-03-28 | 2012-06-20 | 华为技术有限公司 | Registrating roaming custom IP address in evolution network and service using method |
-
2007
- 2007-04-26 CN CN 200710101552 patent/CN101296504B/en active Active
-
2008
- 2008-04-24 WO PCT/CN2008/070794 patent/WO2008131681A1/en active Application Filing
Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931900A (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Method and system for realizing services of IP multi-media subsystem network |
| WO2010148783A1 (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Service realization method and system for ip multimedia sub-system (ims) network, and enhanced mobile switching center |
| CN101931900B (en) * | 2009-06-26 | 2014-03-19 | 中兴通讯股份有限公司 | Method and system for realizing services of IP multi-media subsystem network |
| CN101931902B (en) * | 2009-06-26 | 2014-06-11 | 中兴通讯股份有限公司 | Service implementation method and system of IP multimedia subsystem network |
| CN102130917A (en) * | 2011-03-28 | 2011-07-20 | 华为技术有限公司 | Methods for registering session initiation protocol (SIP) terminal and processing service and related equipment |
| WO2012129913A1 (en) * | 2011-03-28 | 2012-10-04 | 华为技术有限公司 | Method and related device for registering sip terminal and service processing |
| CN102130917B (en) * | 2011-03-28 | 2015-07-22 | 华为技术有限公司 | Methods for registering session initiation protocol (SIP) terminal and processing service and related equipment |
| WO2012163028A1 (en) * | 2011-10-28 | 2012-12-06 | 华为技术有限公司 | User equipment processing method, mobility management entity processing method, user equipment, and mobility management entity and communication system |
| CN103190170A (en) * | 2011-10-28 | 2013-07-03 | 华为技术有限公司 | User equipment processing method, mobility management entity processing method, user equipment, and mobility management entity and communication system |
| CN103190170B (en) * | 2011-10-28 | 2016-07-27 | 华为技术有限公司 | The processing method of a kind of subscriber equipment, the processing method of Mobility Management Entity, subscriber equipment, Mobility Management Entity and communication system |
| CN103107975A (en) * | 2011-11-09 | 2013-05-15 | 中国移动通信集团公司 | Communication method and voice gateway supporting one-card multi-number mode |
| CN103107975B (en) * | 2011-11-09 | 2016-01-27 | 中国移动通信集团公司 | Support communication means and the voice gateways of Multi-Subscriber Number |
| US11917516B2 (en) | 2015-04-01 | 2024-02-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Internet protocol multimedia subsystem emergency calls for roaming user equipments |
| US11743705B2 (en) | 2015-04-01 | 2023-08-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Internet protocol multimedia subsystem emergency calls for roaming user equipments |
| US11146939B2 (en) | 2015-04-01 | 2021-10-12 | Telefonaktiebolaget Lm Ericsson (Publ) | IMS emergency calls for roaming UEs |
| CN108633327A (en) * | 2015-04-01 | 2018-10-09 | 瑞典爱立信有限公司 | IMS urgent calls for roaming UE |
| US11032688B2 (en) | 2015-04-01 | 2021-06-08 | Telefonaktiebolaget Lm Ericsson (Publ) | IMS emergency calls for roaming UEs |
| CN108633327B (en) * | 2015-04-01 | 2021-05-28 | 瑞典爱立信有限公司 | IMS emergency call for roaming UE |
| CN107113705A (en) * | 2015-09-30 | 2017-08-29 | 华为技术有限公司 | A kind of voice communication method and device |
| CN107113705B (en) * | 2015-09-30 | 2019-12-17 | 华为技术有限公司 | Voice communication method and device |
| CN106911626A (en) * | 2015-12-22 | 2017-06-30 | 中国电信股份有限公司 | Access the method and device of VoLTE IMS networks |
| CN106911626B (en) * | 2015-12-22 | 2019-09-13 | 中国电信股份有限公司 | Access the method and device of VoLTE IMS network |
| CN109417703A (en) * | 2016-06-30 | 2019-03-01 | 瑞典爱立信有限公司 | For the mobility forwarding IMS relevant information in S8HR to be used for lawful intercept |
| CN109417703B (en) * | 2016-06-30 | 2022-09-16 | 瑞典爱立信有限公司 | Forwarding IMS-related information for mobility in S8HR for lawful interception |
| US11258831B2 (en) | 2016-06-30 | 2022-02-22 | Telefonaktiebolaget Lm Ericsson (Publ) | LI for mobility in S8HR |
| CN108235299B (en) * | 2016-12-21 | 2020-08-28 | 中国移动通信集团公司 | VoLTE media surface quality testing method and device |
| CN108235299A (en) * | 2016-12-21 | 2018-06-29 | 中国移动通信集团公司 | A kind of test method and device of VoLTE medium surfaces quality |
| CN109039988A (en) * | 2017-06-08 | 2018-12-18 | 中国移动通信集团河北有限公司 | Register method, device and the equipment of IP multimedia subsystem |
| CN109039988B (en) * | 2017-06-08 | 2022-02-22 | 中国移动通信集团河北有限公司 | Registration method, device and equipment of IP multimedia subsystem |
| WO2019095379A1 (en) * | 2017-11-20 | 2019-05-23 | Oppo广东移动通信有限公司 | Service activation and deactivation method, device and computer storage medium |
| US11051268B2 (en) | 2017-11-20 | 2021-06-29 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Service activation and deactivation method, device and computer storage medium |
| CN110661753B (en) * | 2018-06-30 | 2021-10-22 | 华为技术有限公司 | Network registration method, device and system |
| CN110661753A (en) * | 2018-06-30 | 2020-01-07 | 华为技术有限公司 | Network registration method, device and system |
| WO2020073855A1 (en) * | 2018-10-08 | 2020-04-16 | 华为技术有限公司 | Method and device for establishing session, and, method and device for transmitting packet |
| CN111010744A (en) * | 2018-10-08 | 2020-04-14 | 华为技术有限公司 | Method and device for establishing session and method and device for sending message |
| US11743970B2 (en) | 2018-10-08 | 2023-08-29 | Huawei Technologies Co., Ltd. | Session establishment method and apparatus, and packet sending method and apparatus |
| CN114173393A (en) * | 2021-12-15 | 2022-03-11 | 中国电信股份有限公司 | Access control method and device for visited network, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101296504B (en) | 2011-09-28 |
| WO2008131681A1 (en) | 2008-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101296504B (en) | Method, system and device for implementing IP multimedia subsystem service in roaming network | |
| CN101636981B (en) | Method and apparatus for providing circuit switched domain services over a packet switched network | |
| JP5800908B2 (en) | Access network control / access technology selection and routing support for routing IP traffic by user equipment in a multi-access communication system | |
| US7826353B2 (en) | Method, system and network element for authorizing a data transmission | |
| CN103988544B (en) | System and method for minimizing the loss of IP context during IRAT switches | |
| EP2056570A1 (en) | Session and media binding to common control | |
| CN1859412B (en) | Registrating roaming custom IP address in evolution network and service using method | |
| US20070165630A1 (en) | Optimization of PDP context usage | |
| EP3343861B1 (en) | Method for registering home routed roaming user equipment with ims network | |
| JP2012512553A (en) | Wireless network and method of operating wireless network | |
| CN102378148A (en) | Terminal, HSS (Home Subscriber Server), and method and system for network element of core network to learn terminal capacity | |
| CN103987092A (en) | Method and device for selecting network device in switching process | |
| EP2190146A1 (en) | Addressing method of policy decision function entity, network element and network system | |
| CN101448292A (en) | Method for acquiring home network proxy call session control function by access network | |
| US20090270064A1 (en) | Method and system architecture for establishing a specific communication session in a communication network | |
| WO2011140888A1 (en) | Communication system and method for enhanced single radio voice call continuity | |
| US9209999B2 (en) | Method, apparatus, and system for associating sessions | |
| CN101115056A (en) | Wireless network login method, device and system | |
| CN100484290C (en) | Method for realizing PDP address distribution in service cut-in | |
| CN1870635B (en) | Service quality authorization method | |
| CN101277518A (en) | Method for processing emergency service | |
| CN102215544A (en) | Method and system for acquiring load information of wireless base station | |
| CN101730151B (en) | Method, system and access service network gateway for realizing DHCP mode negotiation | |
| CN101730037A (en) | Method and system for establishing IP multimedia subsystem service | |
| CN101577897B (en) | Method for informing IMS about belonging network of PDN GW allocated to UE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |