CN101478797B - Method, equipment for terminal to access target system from source system - Google Patents
Method, equipment for terminal to access target system from source system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
- H04W36/00226—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]
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- H—ELECTRICITY
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- H04W80/08—Upper layer protocols
- H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
Abstract
The embodiment of the invention discloses a method of the access of the terminal from a source system to a target system. When the source system is the IP network and the target system is the CS network, the method comprises: when the terminal is in the IP network, the terminal obtains the location area information of the CS network; the terminal obtains the corresponding location information of an interworking function entity according to the location area information of the CS network; the terminal gets access to the CS network through the interworking function entity. The embodiment of theinvention also discloses a method by which the terminal can get access to the IP network from the CS network and terminal equipment. In the method and terminal equipment of the embodiment of the invention, the terminal equipment obtains the location area information of the target system according to the location information of the source system and gets access to the target system through a corresponding interworking function entity, realizing voice call continuity from the target system to the target system.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method, equipment of terminal to access target system from source system.
Background technology
Universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) be to adopt Wideband Code Division Multiple Access (WCDMA) to insert (Wideband Code Division Multiple Access, WCDMA) 3-G (Generation Three mobile communication system) of air interface technologies also calls the WCDMA communication system to the UMTS system usually.The UMTS system has adopted and the similar structure of second generation mobile communication system, comprise Radio Access Network (Radio Access Network, RAN) and core network (Core Network, CN).Wherein Radio Access Network is used to handle all and wireless function associated, and CN handles functions such as customer location management in the UMTS system, service management and the exchange of realization and external network and routing function.CN from be divided in logic circuit commutative field (Circuit Switched Domain, CS) and packet-switched domain (Packet SwitchedDomain, PS).(User Equipment UE) has constituted whole UMTS system together for UTRAN (Universal Terrestrial Radio Access Network Universal Terrestrial Radio Access Network), CN and subscriber equipment.
In order to improve systematic function, system's architecture evolution (SystemArchitecture Evolution, project SAE) are being carried out in the world at present.The framework of this system as shown in Figure 1.Among Fig. 1, UE is subscriber equipment, i.e. terminal; EUTRAN is the wireless access network of evolution, and the Node B of evolution is wherein arranged, and is called ENB, may also have other nodes, and we replace these nodes with ENB.MME (MobilityManagement Entity) is a Mobility Management Entity, has the chain of command function, as with the chain of command Message Processing of UE, mobile management (record UE positional information), paging, authentication etc.Serving SAE Gateway, gateway has user plane functions, transmits the data of UE, has S1-U interface with wireless access network.The similar altogether traditional SGSN of MME and gateway (Serving GPRS Support Node, Serving GPRS Support Node).PDN GW (Packet Data Network SAE Gateway, packet data network gateway), similar traditional GGSN (Gateway GPRS Support Node, Gateway GPRS Support Node), there is the SGi interface with outer data network, has functions such as strategy execution, packet filtering.PCRF (PolicyControl and Charging Rules Function, policy control and charging regulation function entity) the relevant controlled function of implementation strategy.The S3 interface is the interface between the SGSN of MME and 2G/3G, and it is based on the GTP agreement, and S4 is the interface of gateway and SGSN.Gateway may be in same physical node with PDN Gateway also may be in different physical nodes.MME and gateway also may be same physical node or the physical node that separates.When top logic entity is in same node, then the interface signaling between it transfers internal node message to.
SAE/LTE is defined as a pure packet switching system, and this just shows that speech business can only be transmitted in this system in the carrying of packet switch.In the SAE/LTE system, the speech business data are generally controlled by IMS, so speech business is generally known as the VoIP speech business in SAE/LTE.And for traditional speech business, generally all be to be carried on the CS TDM (Time Division Multiplexing, time division multiplexing).SAE/LTE is that focus covers in the deployment of starting stage, and the GSM/UMTS network can be regarded a kind of all standing as to a certain extent.Obvious this network topology structure is brought a problem: when UE from 2G/3G circuit domain (Circuit System, when CS) network moves into SAE/LTE network hotspot coverage, the speech business based on IMS of SAE/LTE need seamlessly be transferred in voice on the carrying 2G/3GCS network, promptly keeps voice continuity.
Continuous voice call (Voice Call Continuity, VCC) generally be meant, when UE is supporting VoIP (Voice Over IP, use the IP transferring voice) professional network and not supporting between the network of VoIP business when mobile, it is continuous that the speech business of this UE must keep, the speech business that is about to be carried on the VoIP of origin system takes over seamlessly goal systems CS territory, and vice versa.Fig. 2 is the scheme principle schematic that existing employing Dual Radio (Dual Radio is meant generally that between 3GPP and Non-3GPP UE puts at one time and can accept two kinds of wireless signals simultaneously) realizes continuous voice call.
As shown in Figure 2, if UE A initiates audio call in the CS territory, this CS audio call is anchored at VCCAS (Voice Call Continuity Application Server VCC application server).Cover when UE A will move out the CS network and enter wlan network, UE A initiates an IMS audio call by wlan network and this IMS audio call also is anchored on the VCC AS.After this IMS audio call is set up, CS signaling between UE A and the VCC AS and voice bearer by the IMS signaling between UE A and the VCC AS with and attached VoIP carrying replace.Realized that from the continuous voice call of CS network to IMS network still, this scheme only is applicable between Wi-Fi network and the GERAN voice continuity problem under Dual Radio condition.Along with SAE/LTE, wireless broad band technology such as WIMAX occur, be necessary to consider solution from the seamless switching under Single Radio (Single Radio refers generally in 3GPP inside, and UE can only accept a kind of 3GPP wireless signal at a time point) situation between SAE/LTE, WIMAX and the cellular network.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of method, terminal equipment of terminal to access target system from source system is provided, and can make terminal equipment from the seamless goal systems that is linked into of origin system.
A kind of method that realizes terminal from IP network access CS network that the embodiment of the invention provides comprises step:
When terminal is in IP network, described terminal obtains the location area information of described CS network;
Described terminal obtains the positional information of corresponding interconnection functional entity according to the location area information of described CS network;
Described terminal inserts described CS network by described interconnection functional entity.
Accordingly, the embodiment of the invention provides a kind of method that realizes terminal from CS network insertion IP network, comprises step:
When terminal is in the CS network, described terminal obtains the location area information of described IP network;
Described terminal obtains the positional information of corresponding interconnection functional entity according to the location area information of described IP network;
Described terminal inserts described IP network by described interconnection functional entity.
Correspondingly, the embodiment of the invention provides a kind of method that realizes terminal from roaming CS network insertion IP network, comprises step:
Set up home network unstructured supplementary data traffic (UnstructuredSupplementary Service Data, USSD) the USSD passage between the gateway of described terminal and described terminal;
Select an interconnection functional entity according to described home network USSD gateway;
Set up the logical channel between described terminal and the described interconnection functional entity;
Described terminal inserts described IP network by described logical channel.
Correspondingly, the embodiment of the invention provides a kind of terminal equipment, comprising:
The goal systems location area information obtains the unit, is used for obtaining the location area information of described goal systems when described terminal is positioned at origin system;
Interconnection functional entity obtains the unit, is used for obtaining according to described goal systems location area information the location area information of the goal systems that the unit obtained, and obtains the positional information of corresponding interconnection functional entity;
Insert request unit, be used for inserting described goal systems by described interconnection functional entity request.
The embodiment of the invention method, terminal equipment in, terminal equipment is by obtaining the location area information of goal systems according to the positional information at origin system place, and be linked in this goal systems by a corresponding interconnection functional entity, can realize the continuous voice call from the origin system to the goal systems.
Description of drawings
Fig. 1 is a kind of embodiment schematic diagram of the system architecture of System Architecture Evolution network in the prior art;
Fig. 2 is the scheme principle schematic that available technology adopting Dual Radio realizes continuous voice call;
Fig. 3 be an embodiment of the present invention provide include the schematic diagram that interconnecting function is the network architecture of entity;
Fig. 4 is and home location register (Home Location Register, HLR) the direct-connected network architecture schematic diagram of setting up the USSD passage;
Fig. 5 is and mobile switching centre (Mobile Switch Center, MSC) the direct-connected network architecture schematic diagram of setting up the USSD passage;
Fig. 6 is that an example structure of the terminal equipment among Fig. 3 is formed schematic diagram;
Fig. 7 is the example structure composition schematic diagram that the interconnection functional entity among Fig. 6 obtains the unit;
Fig. 8 is another example structure composition schematic diagram that the interconnection functional entity among Fig. 6 obtains the unit;
Fig. 9 is the first embodiment schematic diagram of the method for terminal to access target system from source system of the present invention;
Figure 10 is the second embodiment schematic diagram of the method for terminal to access target system from source system of the present invention;
Figure 11 is that origin system is the SAE/LTE network, and goal systems is a 2G CS network, and UP ' interface is realized the method schematic diagram of terminal to access target system from source system based on IP;
Figure 12 utilizes adjacent cell list to obtain the schematic diagram of LA information;
Figure 13 is the example that network is divided;
Figure 14 is that origin system is the SAE/LTE network, and goal systems is a 2G CS network, and UP ' interface is realized the method schematic diagram of terminal to access target system from source system based on NAS;
Figure 15 is that origin system is that source network is a 2G CS network, and objective network is the SAE/LTE network, and UP ' interface is realized the method schematic diagram of terminal to access target system from source system based on USSD;
Figure 16 utilizes adjacent cell list to obtain the schematic diagram of TA information;
Figure 17 is that origin system is that source network is a 2G CS network, and objective network is the SAE/LTE network, and UP ' interface is realized the schematic diagram of another embodiment of method of terminal to access target system from source system based on USSD;
Figure 18 is that origin system is that source network is a 2G CS network, and objective network is the SAE/LTE network, and the method that UP ' interface is realized terminal to access target system from source system based on USSD is the schematic diagram of an embodiment again;
Figure 19 is that origin system is that source network is a 2G CS network, and objective network is the SAE/LTE network, and UP ' interface is realized the schematic diagram of the another embodiment of method of terminal to access target system from source system based on USSD;
Figure 20 is an embodiment schematic diagram that carries out mobile management among the present invention under the Active state;
Figure 21 is the schematic diagram that carries out another embodiment of mobile management among the present invention under the Active state.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 3 is a kind of interconnection functional entity (Interworking Function, network architecture schematic diagram IWF) of including in the embodiments of the invention.As shown in Figure 3, this network comprises origin system, goal systems and interconnection functional entity.In the specific implementation, described origin system can be gsm system, WCDMA system, LTE system, WIMAX system and 3GPP2 system etc.; Described goal systems can be 3GPP2 DO system, 3GPP2 1XRTT system, UMB system, SAE/LTE system, WIMAX system, 2G/3G system etc.; In the specific implementation, UE is established to the logical channel UP ' interface of IWF based on origin system.UE passes through the signaling (for example registration, traffic signaling) that UP ' interface sends goal systems, thereby simulation UE is in the behavior of goal systems.
In the specific implementation, UP ' interface can be based on the IP bearing system of origin system, also can be based on the signaling level message of origin system, as, based on GSM USSD message, 2G/3G short message, 2G/3G/LTE non-access layer information (None Access Stratum, NAS).As shown in Figure 3, when origin system was gsm system, UE was established to the logical channel UP ' interface of IWF based on the USSD passage of origin system GSM.And then realize that the UP ' interface that UE sets up by the USSD passage sends the signaling information that inserts goal systems (systems such as 3GPP2 DO system, 3GPP2 1XRTT system, UWB system, SAE/LTE system, WIMAX system), simulation UE is in the behavior of goal systems, wherein, this signaling message can be for such as register command message, traffic signaling message.In the specific implementation, UE and IWF can adopt the ICCP based on USSD (IMS Control Channel ProtocolIMS control channel agreement) of similar ICS (IMS CentralizedSystem IMS centralized control system).
Wherein, USSD (Unstructured Supplementary Service Dara unstructured supplementary data traffic) is a kind of novel interactive sessions data service based on the GSM mobile communications network, is the another novel value-added service of releasing on the GSM mobile communications network continue after the short message service.USSD is a kind of novel interactive data service based on the GSM network.What the USSD system adopted is towards connection, and the interactive session mode of transparent channel is provided, and is the ideal carrier of session service, has that response speed is fast, interaction capabilities strong, high reliability features, supports most of common GSM mobile handset simultaneously.The form that USSD initiates: #SC*SI#, wherein, SC is a service code, is made up of the numeral of 0-9, SI is a business information, can be arbitrary content.The # of front is leading character (Leader Char), can by (*, 1-3 bit combination #) forms, the # of back is that end mark (CloseChar) is such as * 125#.Its framework has dual mode: with the direct-connected mode of HLR and with the direct-connected mode of MSC.
As shown in Figure 4, be a kind of and the network architecture schematic diagram direct-connected USSD of foundation passage of HLR.Under USSD center and the direct-connected situation of HLR, when the USSD center issues, send USSD message to HLR that MS belonged to, be transmitted to the MSC at this MS place by HLR, thereby provide USSD service for the USSD user that this HLR covered; When MS upward sends out, USSD message arrives HLR via MSC, and HLR passes to the USSD center with it then, transmits USSD message by the USSD center and handles for the corresponding service processing module, wherein, this Service Processing Module can be such as being USSD server (USSD Server).
As shown in Figure 5, be a kind of and the network architecture schematic diagram direct-connected USSD of foundation passage of MSC.Under USSD center and the direct-connected situation of MSC, when the USSD center issues, send USSD message to the MSC at MS place, realize the whole network USSD user's automatic roaming (MSC at MS place must support the USSD function); When MS upward sends out, USSD message will arrive the USSD center via MSC, be transmitted to the corresponding service processing module by the USSD center and handle, and the USSD center is as the USSD processing center (USSD Handler) of MSC at this moment.In addition, in the specific implementation, in order to improve the speed of UP ' interface command transmitting, UE and IWF pass through UP ' interface negotiation and enable compression function.
In the specific implementation, IWF can link to each other by Radius/Diameter protocol interface and AAA (AutenticationAuthorization Accounting, authentication and authorization charging) server.When goal systems was 3GPP2 DO network, IWF contained 3GPP DO and inserts the side entity function, and the interface of IWF and PDSN is A10/A11, and IWF and PCF interface are A8/A9/ (A14)/(A20).When goal systems was the 3GPP2 1XRTT network, IWF contained 3GPP2 1XRTT and inserts the side entity function, and the interface of IWF and 1XRTT MSC is A1.When goal systems was the 2G/3G network, IWF contained 2G/3G and inserts the side entity function, and the interface of IWF and 2G/3GMSC is the A/Iu-CS interface, and the interface of IWF and 2G/3G SGSN is the Gb/Iu-PS interface.When goal systems was the UMB network, IWF contained UMB network insertion side entity function, and IWF and AGW interface are U1, and IWF and SRNC interface are U2, and IWF and eBS interface are U1.When goal systems was the SAE/LTE network, IWF contained SAE/LTE network insertion side eNodeB function, and IWF and MME interface are S1-MME, and IWF and Serving GW interface are S1-U.If IWF contains the SGSN/MME functional entity, correspondingly, IWF and MME have the S3/S10 interface.Perhaps the interface between IWF and the MME is S3 ', and when switching from the SAE/LTE network to the 2G/3G network, all switching message are all passed through IWF, and IWF is always on the path of S3 interface.When switching from the 2G/3G network to the SAE/LTE network, all switching message are all passed through IWF, and IWF is always on the path of S3 interface.When goal systems was the WIMAX network, IWF contained WIMAX network insertion side BS function, and IWF and ASN-GW interface are R4/R6.And, as the IWF of logical functional entity, can be carried on the actual physical equipment (such as, on the equipment such as MSC/SGSN/MME/ASN-GW).
Concrete, Fig. 6 is that the example structure of terminal equipment among Fig. 3 is formed schematic diagram, as shown in Figure 6, the terminal equipment of present embodiment comprises that the goal systems location area information obtains unit 10, interconnection functional entity obtains unit 12 and inserts request unit 14.Wherein:
The goal systems location area information obtains unit 10, is used for obtaining the location area information of described goal systems when described terminal is positioned at origin system;
Interconnection functional entity obtains unit 12, is used for obtaining according to described goal systems location area information the location area information of the goal systems that unit 10 obtained, and obtains the positional information of corresponding interconnection functional entity;
Insert request unit 14, be used for inserting described goal systems by described interconnection functional entity request.
Further, as shown in Figure 7, be that an example structure of the interconnection functional entity acquisition unit among Fig. 6 is formed schematic diagram; Wherein, this interconnection functional entity acquisition unit 12 further comprises:
Receiving element 120 is used for the network identification information of receiving target system;
As shown in Figure 8, be another example structure composition schematic diagram of the interconnection functional entity acquisition unit among Fig. 6; Wherein, this interconnection functional entity acquisition unit 12 further comprises:
Obtain unit 126, be used to obtain the network identification information of origin system;
Accordingly, Fig. 9 is based on the embodiment schematic flow sheet of method of the terminal to access target system from source system of the present invention of terminal equipment shown in Figure 6, and as shown in Figure 9, the method for present embodiment comprises:
Step S10, terminal obtains the location area information of goal systems when origin system;
During specific implementation, when this origin system is the IP network system, when goal systems was the CS network system, the step of the location area information of this acquisition goal systems can comprise as follows:
According to the positional information of origin system (IP network), this terminal inquiry dns server, the location area information of acquisition goal systems (CS network); Perhaps this IP network sends adjacent cell list information to this terminal, cell information according to this CS network in this adjacent cell list, obtain the location area information of this CS network, when the location area information that obtains the CS network when the cell information of CS network from this adjacent cell list was a plurality of, this terminal can be selected one of them; Perhaps dispose the location area information of this CS network in the base station of this IP network, the base station of this IP network sends to this terminal with the location area information of the CS network of configuration.
When this origin system is the CS network system, when goal systems was the IP network system, the step of the location area information of this acquisition goal systems can comprise as follows:
According to the positional information of this CS network, obtain the location area information of this IP network by interconnection functional entity; Perhaps this CS network sends adjacent cell list information to this terminal, cell information according to this IP network in this adjacent cell list, obtain the location area information of this IP network, if when the location area information that obtains this IP network when the cell information of IP network from adjacent cell list was a plurality of, this terminal can be selected one of them; Perhaps dispose the location area information of this IP network in the base station system of this CS network, the base station of this CS network sends to this terminal with the location area information of the IP network of configuration.
Step S12 according to the goal systems location area information, obtains corresponding interconnection functional entity positional information;
During specific implementation, when this origin system is the IP network system, when goal systems was the CS network system, this step that obtains corresponding interconnection functional entity positional information comprised:
Terminal is found this interconnection functional entity according to the location area information of this CS network; Perhaps dispose the positional information of this interconnection functional entity in the base station system of this IP network, the base station system of this IP network sends to this terminal with the positional information of configuration; Perhaps according to the positional information of this terminal in described IP network, the inquiry dns server obtains the positional information of this interconnection functional entity.
Wherein, terminal finds that according to the location area information of described CS network the step of this interconnection functional entity can comprise:
By the location area information inquiry dns server of this CS network, obtain the positional information of this interconnection functional entity; Perhaps the configuration location area information of this CS network and this interconnection functional entity corresponding relation in this IP network, the location area information of the CS network that obtains according to this terminal, thus obtain the positional information of this interconnection functional entity.
When this origin system is the CS network system, when goal systems was the IP network system, this step that obtains corresponding interconnection functional entity positional information comprised:
This terminal by USSD tunnel and this interconnection functional entity send this terminal in the location area information of this CS network to the USSD gateway; The USSD gateway is inquired about dns server, obtains the location area information of this IP network.
Step S14 inserts goal systems by this interconnection functional entity.
Accordingly, Figure 10 is based on another embodiment schematic flow sheet of method of the terminal to access target system from source system of the present invention of terminal equipment shown in Figure 6, and as shown in figure 10, the method for present embodiment is applied to terminal from roaming CS network insertion IP network.This method comprises:
Step S20 sets up the USSD passage between the home network USSD gateway of terminal and this terminal;
Step S22 selects interconnection functional entity according to this home network USSD gateway, and promptly this home network USSD gateway is selected interconnection functional entity according to the location area information of described IP network or the location area information of described CS network; Be specially: this ownership USSD gateway obtains the interconnection functional entity of this roaming CS network according to the location area information of this IP network or the location area information inquiry dns server of described CS network.Notice that method as described herein is applicable to that also described terminal is from its home network Access Network IP network;
Perhaps described ownership USSD GW is according to the location area information of this IP network or the location area information inquiry dns server of this CS network, obtain the USSD service access code of this roaming CS network and return to terminal, terminal is set up logical channel according to this USSD service access code and the USSD gateway of roaming CS network, this USSD gateway is according to the location area information of current IP network of living in of terminal or CS network, and selecting interconnection functional entity is this Terminal Service.
Step S24 sets up the logical channel between this terminal and this interconnection functional entity;
Step S26, this terminal inserts goal systems by this logical channel.
Be example with the specific embodiment below, the embodiment of the invention is described in more details.
As shown in figure 11, be that origin system is the SAE/LTE network, goal systems is a 2G CS network, UP ' interface is realized the method schematic diagram of terminal to access target system from source system based on IP.
At first, need according to the current location of origin system (SAE/LTE) (Tracking area, TA) information obtain goal systems the lane place (process of this acquisition LA information can be taked following mode for Location Area, LA) information:
(1) inquires about dns server according to UE current location information TA of living in, thereby obtain LA information.Perhaps can use the inquiry initial conditions of TA+ sub-district ID as dns server.UE also can directly generate LA information according to this TA information.
(2) one group of LTE cell configuration is become the LA zone, and with the information configuration in this LA zone on the base station of origin system (eNodeB), eNodeB sends to UE with this message.
(3) go up the create-rule of configuration LA and TA at the Mobility Management Entity (MME) of origin system, when UE after the SAE/LTE system adheres to, UE obtains LA information.
(4) (Neighbor Cell Lists, NCL), UE obtains LAI according to receiving the 2G/3G adjacent cell list.If it is a plurality of that UE obtains LAI, UE selects one of them, carries out the CS registration.In the specific implementation, UE reports support to give eNodeB by IWF in the ability of goal systems (2G/3G network) registration.ENodeB selects whether the 2G/3G adjacent cell list is sent to UE according to the ability of UE.
For ease of understanding, see also shown in Figure 12ly, be to utilize adjacent cell list to obtain the schematic diagram of LA information.Wherein,
(1) for LTE sub-district 2, the adjacent cell list of serving the eNodeB configuration CS of this LTE sub-district is CS sub-district 2.When UE quartered at LTE sub-district 2, UE can accurately obtain UE present located LA information according to CS sub-district 2.
(2) for LTE sub-district 3, the adjacent cell list of serving the eNodeB configuration CS of this LTE sub-district is CS sub-district 1, CS sub-district 2, CS sub-district 3.When UE quartered at LTE sub-district 3, UE can be according to the CS cell list, obtained that UE is current may to be in LA under the CS sub-district 1, the affiliated LA of CS sub-district 2, the affiliated LA of CS sub-district 3.If CS sub-district 1, CS sub-district 2 or CS sub-district 3 belong to different LA, then UE selects one of them LA according to local policy or network strategy.In addition, when the configuration adjacent cell list, because the superimposed coverage area of CS sub-district 1 and LTE sub-district 3 is very little, so in actual disposition, can not dispose CS sub-district 1, perhaps carrying out priority according to the size of superimposed coverage area divides, for example, can in NCL, the size according to the overlay area carry out ordered queue.In addition, terminal can be come chosen position district information according to the sub-district number that belongs to same lane place in the adjacent cell list.
(3) for LTE sub-district 1, the adjacent cell list of serving the eNodeB configuration CS of this LTE sub-district is CS sub-district 1, CS sub-district 2.When UE quartered at LTE sub-district 1, UE can obtain the current affiliated LA that may be in CS sub-district 1 affiliated LA, CS sub-district 2 of UE according to the CS cell list.If CS sub-district 1, CS sub-district 2 belong to different LA, then UE selects one of them LA according to local policy or network strategy.In addition, when the configuration adjacent cell list, because the superimposed coverage area of CS sub-district 2 and LTE sub-district 1 is very little, so in actual disposition, can not dispose CS sub-district 2 or carry out the priority division according to the size of superimposed coverage area, for example, can in NCL, the size according to the overlay area carry out ordered queue.In addition, terminal can be come chosen position district information according to the sub-district number that belongs to same lane place in the adjacent cell list.
In addition, in some other embodiment, can be by origin system being divided buffering area and non-buffering area, the cell measurement that when terminal equipment is handled one of them zone, can initiate goal systems, thereby the switching that the support origin system arrives goal systems.Be illustrated in fig. 13 shown below, be an example of network division.Wherein,
Particularly, the differentiation of buffer area 1 is as follows:
1) on the eNodeB of LTE-2G buffer area, disposes specific indication, and send to this regional UE by eNodeB.In the specific implementation, can send to UE, perhaps send corresponding indication information to terminal by Radio Link control (RRC) message by the BSC broadcast channel; Certainly can also carry this indication information by other message, for example, cell update is confirmed (Cell Update Confirm), switching command (Handover to UTRAN Command) to UTRAN, physical channel reprovision (Physical ChannelReconfiguration), radio bearer reprovision (Radio Bearer Reconfiguration), radio bearer discharges (Radio Bearer Release), radio bearer is set up (Radio Bearer Setup), the Radio Link control connection is set up (RRC Connection Setup), transmission channel reprovision (Transport ChannelReconfiguration), measure control message such as (Measurement Control).
2) dispose special 2G/3G Cell ID or LTE Cell ID in the buffer area, when UE enters the buffer area, receive the adjacent LTE network information and comprise special 2G/3G Cell ID or LTE Cell ID (for example LTE cell list), thereby judge that it enters borderline region.
The discriminant approach of non-buffer area 2 is similar to the differentiation of buffer area 1.
In addition, if from only there being two states in logic, only need a kind of sign, if UE can judge a kind of state that whether is in, then whether UE also just can judge UE for second kind of state.
Figure 11 please be got back to again, after lane place (LA) information that obtains goal systems, interconnection functional entity (IWF) positional information need be obtained into this Terminal Service.So that this terminal and this interconnection functional entity connect, thereby insert goal systems.The information of this acquisition interconnection functional entity can adopt following mode:
(1) configuration IWF address information in the eNodeB of SAE/LTE, and send to terminal; Perhaps pass through the inquiry dns server, thereby acquisition IWF address information (as, IP address, port etc.).Terminal is after obtaining described information, and direct and IWF connects;
(2) the positional information TA according to UE current origin system of living in inquires about dns server, thereby obtains the IWF address information.Also can use TA+ sub-district ID as querying condition, this IWF address information of inquiry in dns server.Perhaps
(3) according to LA inquiry dns server, obtain the IWF address information.
In general, when the terminal perception enters origin system (LTE) and goal systems (2G) borderline region, then triggering terminal is carried out this LA/IWF discovery procedure; Perhaps by static mobile phone strategy or dispose corresponding network strategy indicating terminal and carry out this LA/IWF discovery mechanism.
As shown in figure 14, be that origin system is the SAE/LTE network, goal systems is a 2G CS network, UP ' interface is realized the method schematic diagram of terminal to access target system from source system based on NAS.
At first, need obtain lane place (LA) information of goal systems according to present position-region (TA) information of origin system (SAE/LTE), the process of this acquisition LA information can be taked described mode illustrated in fig. 11.
In the positional information (LA) that obtains goal systems afterwards, need obtain interconnection functional entity (IWF) information into this Terminal Service.This process is with similar to the explanation among Figure 11, and the difference part is, is the routing iinformation that MME can use by the inquiry IWF information that dns server obtained.Configuration LA and IWF corresponding relation on MME.(Location Area Update, in the time of LAU), MME selects IWF according to LA, thereby sets up the UP ' interface based on NAS when UE carries out location area updating.
In like manner, when the terminal perception enters origin system (LTE) and goal systems (2G) borderline region, then triggering terminal is carried out this LA/IWF discovery procedure; Perhaps by static mobile phone strategy or dispose corresponding network strategy indicating terminal and carry out this LA/IWF discovery mechanism.
As shown in figure 15, be that origin system is that source network is a 2G CS network, objective network is the SAE/LTE network, UP ' interface is realized the method schematic diagram of terminal to access target system from source system based on USSD.
Wherein, IWF and HLR are in home network, and UP ' interface is based on USSD.In general, dispose the USSD service access code of home network on the terminal, perhaps come the USSD service access code of dynamic assignment home network by home network.
At first, need obtain the location area information (TA) of goal systems (SAE/LTE) according to the present position-region information (LA) of origin system (2G CS), one group of cell configuration of 2G is become a virtual TA zone, this TA zone is served by one or more IWF, IWF is according to MME service UE of policy selection, promptly from the SAE/LTE network, 2G cell is seen as the pseudo-LTE sub-district by the IWF-eNB service.
UE can obtain the location area information (TA) of goal systems by following mode:
(1) pass through UP ' interface and send LA/CGI to the USSD gateway, the USSD gateway generates TA according to LA or CGI mapping, and perhaps, the USSD gateway as initial conditions, obtains TA by the inquiry dns server with LA/CGI.
(2) map information with LA and TA is configured on the BSC, and UE receives the LA/TA information that BSC sends when entering this zone.
(3) (Neighbor Cell Lists, NCL), UE obtains TA information according to receiving the LTE adjacent cell list.If it is a plurality of that UE obtains TA information, UE selects one of them, carries out the LTE attachment flow.In the specific implementation, UE reports support to give BSC by USSD and IWF in the ability of SAE/LTE network registry.BSC selects whether the LTE adjacent cell list is sent to UE according to the ability of UE.
For ease of understanding, see also shown in Figure 16ly, be to utilize adjacent cell list to obtain the schematic diagram of TA information.Wherein,
(1) for CS sub-district 3, the adjacent cell list of serving the BSC/RNC configuration LTE of this CS sub-district is LTE sub-district 1, LTE sub-district 2, LTE sub-district 3, LTE sub-district 4, LTE sub-district 5, LTE sub-district 6, LTE sub-district 7.When UE resides in CS sub-district 2, UE can be according to LTE sub-district 1, LTE sub-district 2, LTE sub-district 3, LTE sub-district 4, LTE sub-district 5, LTE sub-district 6, LTE sub-district 7, knows that UE is current may be in TA under LTE sub-district 1, LTE sub-district 2, LTE sub-district 3, LTE sub-district 4, LTE sub-district 5, LTE sub-district 6, the LTE sub-district 7.If LLTE sub-district 1, LTE sub-district 2, LTE sub-district 3, LTE sub-district 4, LTE sub-district 5, LTE sub-district 6, LTE sub-district 7 belong to different LA, then UE selects one of them TA according to local policy or network strategy.In addition, when the configuration adjacent cell list, because have only the superimposed coverage area of LTE sub-district 3 and CS sub-district 3 very big, so in actual disposition, only dispose LTE sub-district 3 or carry out the priority division according to the size of superimposed coverage area, for example, in NCL according to the big or small ordered queue of overlay area.In addition, terminal can be come chosen position district information according to the sub-district number that belongs to same lane place in the adjacent cell list.
In general, when UE enters LTE and 2G/3G borderline region, just can trigger above-mentioned flow process and search TA, thereby on the SAE/LTE network, register by IWF.In addition, if 2G/3G network support DTM (Dual Transport Mode double-transmission mode), then UE uses special APN (Access Point Name access point name) to insert the SAE/LTE objective network.
Figure 15 please be got back to again, in the location area information (TA) that obtains goal systems afterwards, IWF address information need be obtained into this Terminal Service.So that this terminal and this IWF connect, thereby insert goal systems.This acquisition IWF address information can adopt following mode:
(1) configuration IWF address information in BSC, and send to UE.
(2) UE passes through UP ' interface inquiry dns server, thereby obtains the IWF address information.Can inquire about by input LA, CGI or TA.
(3) UE passes through UP ' interface LA, CGI or TA is sent to the USSD gateway, and the USSD gateway is selected IWF according to predetermined policy.Perhaps mapping relations between LA or CGI or TA and the IWF are arranged in the USSD gateway configuration.
In general, when the terminal perception enters origin system (2G) and goal systems (LTE) borderline region, then triggering terminal is carried out this LA/IWF discovery procedure; Perhaps by static mobile phone strategy or dispose corresponding network strategy indicating terminal and carry out this LA/IWF discovery mechanism.
As shown in figure 17, be that origin system is that source network is a 2G CS network, objective network is the SAE/LTE network, UP ' interface is realized the schematic diagram of another embodiment of method of terminal to access target system from source system based on USSD.
Wherein, IWF is in visited network, and HLR is in home network, and UP ' interface is based on USSD.
Wherein, the TA discovery mechanism is with similar to the explanation of Figure 15.Particularly, when UE is in visited network, its USSD service access code by home network is established to the logical channel between the home network USSD gateway.
Wherein, obtaining the mode that IWF information taked is:
(1) UE passes through UP ' interface inquiry dns server, thereby obtains the IWF address information.Can inquire about by input LA, CGI or TA.
(2) UE passes through UP ' interface LA, CGI or TA is sent to home network USSD gateway, and home network USSD gateway is selected visited network USSD gateway device according to LA/CGI/TA.Visited network USSD gateway is responsible for selecting IWF, for example selects IWF according to predetermined policy, perhaps in this visited network USSD gateway configuration mapping relations between LA or CGI or TA and the IWF is arranged.
In general, when the terminal perception enters origin system (2G) and goal systems (LTE) borderline region, then triggering terminal is carried out this LA/IWF discovery procedure; Perhaps by static mobile phone strategy or dispose corresponding network strategy indicating terminal and carry out this LA/IWF discovery mechanism.
As shown in figure 18, be that origin system is that source network is a 2G CS network, objective network is the SAE/LTE network, the method that UP ' interface is realized terminal to access target system from source system based on USSD is the schematic diagram of an embodiment again.
Wherein, IWF is in visited network, and HLR is in home network.The TA discovery mechanism is with similar to the explanation of Figure 15.No longer describe in detail.
When UE is in visited network, its USSD service access code by home network is established to the logical channel between the home network USSD gateway, and LA, CGI or TA are sent to home network USSD gateway by described logical channel, home network USSD gateway returns the USSD service access code of the residing visited network of UE according to described LA, CGI or TA.Particularly, the USSD gateway with described LA, CGI or TA as initial conditions, requester network server (for example dns server) thus obtain the USSD service access code of visited network.
The USSD service access code of UE use visited network is set up the logical channel between UE and the visited network USSD gateway, it is described UE service that visited network USSD gateway is selected IWF according to the location area information of terminal IP network of living in or CS network, wherein, visited network USSD gateway selects IWF identical with the explanation to Figure 15, no longer describes in detail.
In general, when the terminal perception enters origin system (2G) and goal systems (LTE) borderline region, then triggering terminal is carried out this LA/IWF discovery procedure; Perhaps by static mobile phone strategy or dispose corresponding network strategy indicating terminal and carry out this LA/IWF discovery mechanism.
As shown in figure 19, be that origin system is that source network is a 2G CS network, objective network is the SAE/LTE network, UP ' interface is realized the schematic diagram of the another embodiment of method of terminal to access target system from source system based on USSD.
Wherein, IWF is in visited network, and HLR is in home network.Wherein, the explanation of TA discovery mechanism and Figure 15 is similar.No longer describe in detail.
When UE is in visited network, its USSD service access code by home network is established to the logical channel between the home network USSD gateway, home network USSD gateway finds that according to described LA, CGI or TA UE is in visited network, then selects IWF and this UE of MME gateway service.Particularly, the USSD gateway as querying condition, obtains IWF and MME gateway information by the inquiry dns server with described LA or CGI or TA.
The MME gateway device is special MME equipment, has logic interfacing between the MME gateway device of home network and the MME gateway device of roaming network, can transmit relevant SAE/LTE context, thereby realizes switching from inter-MME.Particularly, UE passes through home network USSD gateway and IWF and MME gateway in advance at the SAE/LTE network registry, and generates corresponding SAE/LTE context according to business at the SAE/LTE network.At this moment, UE need switch to the SAE/LTE network of visited network from the 2G network, after the MME gateway was received handoff request, the MME gateway arrived visited network MME gateway according to TA, LA or CGI information inquiry, thereby the switching message that will be correlated with sends to visited network MME gateway.Visited network MME gateway finds corresponding visited network MME and corresponding eNodeB equipment according to target LTE cell information, switches thereby finish inter-MME.
In general, when the terminal perception enters origin system (2G) and goal systems (LTE) borderline region, then triggering terminal is carried out this LA/IWF discovery procedure; Perhaps by static mobile phone strategy or dispose corresponding network strategy indicating terminal and carry out this LA/IWF discovery mechanism.
Said process is applicable to that source network is that network such as 3G, WiMAX network, UMB network, HRPD network and 3GPP2 DO and objective network are networks such as 3G CS network, 1xRTT network, WiMAX network, UMB network, HRPD network and 3GPP2 DO, equally also is suitable for the UP ' interface of IP based network or NAS.
In addition, the USSD service access code is supported in the MSC upgrading, be that MSC receives the USSD service access code relevant with IWF, MSC this USSD session that terminates, MSC searches corresponding IWF according to the information of this USSD session simultaneously, thereby sets up the logical links from UE to IWF, thereby UE registers at objective network by IWF, carries out service logic.
Below the mobile management among the present invention is described.
About the mobile management under the Idle state:
When source network is the SAE/LTE network, when objective network is the 2G network,, UE changes when finding its residing lane place (LA), then initiate location area updating (Location Area Updating, LAU) process.Particularly, UE can trigger LAU by following three kinds of methods:
(1) UE finds that at first TA of oneself or CGI change, and then UE generates LA according to TA/CGI.If UE finds that newly-generated LA changes, then UE continues according to IWF of new LA INFORMATION DISCOVERY, and UE initiates the LAU process then.
(2) UE is known new LA information from the eNodeB broadcast, the same step of all the other steps (1).
(3) UE is known new LA information and new IWF information from the eNodeB broadcast, carries out the LAU process.
Need to prove that said process is applicable to that source network is that networks such as 3G, WiMAX network, UMB network, HRPD network and 3GPP2 DO and objective network are networks such as 3G CS network, 1xRTT network, WiMAX network, UMB network, HRPD network and 3GPP2 DO.
When source network is the 2G network, when objective network is the SAE/LTE network,, UE changes when finding its residing TA, then initiate location area updating (Location Area Updating, TAU) process.Concrete number comes, and UE can trigger TAU by following three kinds of methods:
(1) UE finds that at first the LA of oneself or RA or CGI change, and then UE generates TA according to LA/RA/CGI.If UE finds that newly-generated TA changes, then UE continues to find an IWF according to new TA, and UE initiates the TAU process then.
(2) UE is known new TA information from the BSC broadcast, the same step of all the other steps (1).
(3) UE is known new TA information and new IWF information from the BSC broadcast, carries out the TAU process.
Need to prove that said process is applicable to that source network is that 3G, 1xRTT network, WiMAX network, UMB network, HRPD network and 3GPP2 DO network and objective network are networks such as WiMAX network, UMB network, HRPD network and 3GPP2 DO.
About mobile management under the Active state:
It is that example describes that following UE inserts 2G/3G CS network at SAE/LTE by IWF, and promptly source network is the SAE/LTE network, and objective network is a 2G/3G CS network.
As shown in figure 20, be an embodiment schematic diagram that under the Active state, carries out mobile management among the present invention;
Wherein, UE has the voice conversation of an activity, change when UE finds LA, this discovery procedure with to the explanation of Figure 19 roughly the same.Then UE passes through UP ' interface notification source IWF execution inter-IWF switching.From MSC, described IWF switches to common inter-BSC and switches (if source IWF and target IWF belong to different MS C, then can be inter-MSC and switch); And from IWF, because IWF switches at inter-BSC/inter-MSC and adds indication in the message, this switches to inter-IWF indicating target IWF.Particularly, described indication can be added on transparent vessel field (Transparent Container) in the inter-BSC/inter-MSC switching message.
In general, source IWF carries out the inter-IWF switching according to following dual mode:
(1) UE sends to source IWF (for example UP ' interface) with LA, TA or CGI, and source IWF finds target IWF according to described LA, TA or CGI, switches (the IWF discovery procedure is similar to aforementioned explanation to Figure 11, Figure 14, Figure 15) thereby trigger IWF.
(2) UE finds IWF and the notification source IWF (for example passing through UP ' interface) of the LA that service is new.The IWF discovery procedure is similar to aforementioned explanation to Figure 11, Figure 14, Figure 15.
As shown in figure 21, be the schematic diagram that under the Active state, carries out another embodiment of mobile management among the present invention; Wherein, target IWF receives that inter-IWF switches, and carries out following processing:
(1) if inter-IWF switch the voice bearer negotiation information that message comprises UEA (as, IP address, port information, qos requirement), then target IWF carries out bearer negotiation, and negotiation result is returned to UE by the inter-IWF switching flow.
(2) if inter-IWF switches the message that message comprises UP ' the interface foundation of UE A, then carry out UP ' interface and set up negotiations process, and negotiation result is returned to UE by the inter-IWF switching flow.
(3) if inter-IWF does not comprise above-mentioned message, then IWF also can initiatively initiate bearer negotiation information and UP ' interface is set up negotiations process to UE A.
(4) if inter-IWF does not comprise above-mentioned message, then IWF can return immediately handover success message give source IWF (as, pass through MSC).
Source IWF receives the switching message that target IWF returns, and sends to UE A.Bearer negotiation is consulted or the UP interface is set up negotiation if UE A does not carry out in the inter-IWF switching flow, and then UE A initiatively initiates said process.
Target IWF triggers voice bearer by Rx interface and sets up, and perhaps UE A initiates carrying foundation.After carrying was set up and finished, target IWF-BSC carried out the inter-BSC/inter-MSC handoff completion message.
It is that 3G, WiMAX network, UMB network, HRPD network and 3GPP2 DO network and objective network are networks such as 3G, 1xRTT network, WiMAX network, UMB network, HRPD network and 3GPP2 DO that said process is equally applicable to source network.
The embodiment of the invention method, terminal equipment in, terminal equipment is by obtaining the location area information of goal systems according to the positional information at origin system place, and be linked in this goal systems by a corresponding interconnection functional entity, can realize the continuous voice call from the origin system to the goal systems.
Above disclosed is preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (19)
1. a terminal inserts the method for CS network from IP network, it is characterized in that, comprising:
When terminal is in IP network, described terminal obtains the location area information of described CS network;
Described terminal obtains the positional information of corresponding interconnection functional entity according to the location area information of described CS network or described IP network;
Described terminal inserts described CS network by described interconnection functional entity.
2. terminal as claimed in claim 1 inserts the method for CS network from IP network, it is characterized in that, when the user is in IP network, the step that described terminal obtains the location area information of described CS network comprises:
By the positional information of described IP network, described terminal inquiry dns server obtains the location area information of described CS network; Perhaps
Described IP network sends adjacent cell list information to described terminal, according to the cell information of CS network described in the described adjacent cell list, obtains the location area information of described CS network; Perhaps
The location area information of the described CS network of configuration in the base station of described IP network, the base station of described IP network sends the location area information of described CS network to described terminal.
3. terminal as claimed in claim 2 inserts the method for CS network from IP network, it is characterized in that, described IP network sends adjacent cell list information to described terminal, and according to the cell information of CS network described in the described adjacent cell list, the step that obtains the location area information of described CS network comprises:
When the location area information that obtains described CS network when the cell information from CS network described in the described adjacent cell list was a plurality of, described terminal was selected one of them.
4. terminal as claimed in claim 1 is characterized in that from the method for IP network access CS network described terminal is according to the location area information of described CS network or described IP network, and the step that obtains the positional information of corresponding interconnection functional entity is:
Terminal is found described interconnection functional entity according to the location area information of described CS network; Perhaps
Dispose the positional information of described interconnection functional entity in the base station system of described IP network, the base station system of described IP network sends to described terminal; Perhaps
According to the location area information of described IP network, the inquiry dns server obtains the positional information of described interconnection functional entity.
5. terminal as claimed in claim 4 is characterized in that from the method for IP network access CS network terminal finds that according to the location area information of described CS network the step of described interconnection functional entity comprises:
By the location area information inquiry dns server of described CS network, obtain the positional information of described interconnection functional entity; Perhaps
The location area information and the described interconnection functional entity corresponding relation of the described CS network of configuration obtain the location area information of described CS network according to described terminal, thereby obtain the positional information of described interconnection functional entity in described IP network.
6. as the method for each described terminal of claim 1 to 5, it is characterized in that described terminal comprises by the step that described interconnection functional entity inserts described CS network from IP network access CS network:
Described interconnection functional entity sends the signaling information that inserts described CS network.
7. a terminal is characterized in that from the method for CS network insertion IP network, comprising:
When terminal is in the CS network, described terminal obtains the location area information of described IP network;
Described terminal obtains the positional information of corresponding interconnection functional entity according to the location area information of described CS network or described IP network;
Described terminal inserts described IP network by described interconnection functional entity.
8. terminal as claimed in claim 7 is characterized in that from the method for CS network insertion IP network the described terminal of working as is in the CS network, and the step that described terminal obtains the location area information of described IP network comprises:
According to the positional information of described CS network, obtain the location area information of described IP network by described interconnection functional entity; Perhaps
Described CS network sends adjacent cell list information to described terminal, according to the cell information of IP network described in the described adjacent cell list, obtains the location area information of described IP network; Perhaps
Dispose the location area information of described IP network in the base station system of described CS network, the base station of described CS network sends the location area information of described IP network to described terminal.
9. terminal as claimed in claim 8 is characterized in that from the method for CS network insertion IP network according to the positional information of described CS network, the step that obtains the location area information of described IP network by described interconnection functional entity comprises:
Described terminal by USSD tunnel and described interconnection functional entity send described terminal in the location area information of described CS network to the USSD gateway;
The USSD gateway is inquired about dns server, obtains the location area information of described IP network.
10. terminal as claimed in claim 8 is from the method for CS network insertion IP network, it is characterized in that, described CS network sends adjacent cell list information to described terminal, and according to the cell information of IP network described in the described adjacent cell list, the step that obtains the location area information of described IP network comprises:
When the location area information that obtains described IP network when the cell information from IP network described in the described adjacent cell list was a plurality of, described terminal was selected one of them.
11. terminal as claimed in claim 7 is characterized in that from the method for CS network insertion IP network described terminal is according to the location area information of described CS network or described IP network, the step that obtains the positional information of corresponding interconnection functional entity is:
Terminal is found described interconnection functional entity according to the location area information inquiry dns server of described CS network or described IP network; Perhaps
Dispose the positional information of described interconnection functional entity in the base station system of described CS network, the base station system of described CS network sends to described terminal.
12. terminal as claimed in claim 11 is characterized in that from the method for CS network insertion IP network terminal finds that according to the location area information inquiry dns server of described CS network or described IP network the step of described interconnection functional entity comprises:
Set up the USSD passage between the home network USSD gateway of described terminal and described terminal;
The home network USSD gateway of described terminal obtains the interconnection functional entity of described ownership CS network according to the location area information of described IP network or the location area information inquiry dns server of described CS network; Perhaps
The home network USSD gateway of described terminal obtains the interconnection functional entity of the roaming CS network of described terminal according to the location area information of described IP network or the location area information inquiry dns server of described CS network; Perhaps
The home network USSD gateway of described terminal is according to the location area information of described IP network or the location area information inquiry dns server of described CS network, obtain described terminal roaming CS network the USSD service access code and return to described terminal, described terminal inserts the USSD gateway of the roaming CS network of described terminal according to the USSD service access code of the roaming CS network of described terminal, and the USSD gateway of the roaming CS network of described terminal is selected an interconnection functional entity according to the location area information according to described CS network or described IP network.
13., it is characterized in that described terminal comprises by the step that described interconnection functional entity inserts described IP network as the method for each described terminal of claim 7 to 12 from CS network insertion IP network:
Described interconnection functional entity sends the signaling information that inserts described IP network.
14. a terminal equipment is characterized in that, comprising:
The goal systems location area information obtains the unit, is used for obtaining the location area information of described goal systems when described terminal is positioned at origin system;
Interconnection functional entity obtains the unit, is used for obtaining according to described goal systems location area information the location area information of the goal systems that the unit obtained, and obtains the positional information of corresponding interconnection functional entity;
Insert request unit, be used for inserting described goal systems by described interconnection functional entity request.
15. terminal equipment as claimed in claim 14 is characterized in that, described goal systems location area information obtains the unit and comprises:
Receiving element is used for the network identification information of receiving target system;
Generation unit, the network identification information that is used for receiving according to described receiving element generates the location area information of described goal systems.
16. terminal equipment as claimed in claim 15 is characterized in that, the network identification information of described goal systems is: the cell ID of the described goal systems in the adjacent cell list of reception.
17., it is characterized in that described goal systems location area information obtains the unit and further comprises as claim 15 or 16 described terminal equipments:
Selected cell when the location area information that is used for the goal systems that generates at described generation unit is a plurality of, is selected one of them.
18. terminal equipment as claimed in claim 14 is characterized in that, described goal systems location area information obtains the unit and comprises:
Obtain the unit, be used to obtain the network identification information of origin system;
Query unit is used for the network identification information according to described origin system, and the requester network server obtains the location area information of described goal systems.
19. terminal equipment as claimed in claim 18 is characterized in that, the network identification information of described origin system is the location area information of origin system; The described webserver is a dns server.
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| CN2008100256154A CN101478797B (en) | 2008-01-04 | 2008-01-04 | Method, equipment for terminal to access target system from source system |
| PCT/CN2008/073799 WO2009089751A1 (en) | 2008-01-04 | 2008-12-27 | A method and device of the terminal accessing a target system from a source system |
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| US8279797B2 (en) * | 2005-05-05 | 2012-10-02 | Motorola Mobility Llc | Cross-paging between communication networks |
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