CN102137459A

CN102137459A - Method as well as related system and device for ensuring CS (circuit-switched) domain of one-card double-standby terminal to reside in two networks simultaneously

Info

Publication number: CN102137459A
Application number: CN2011100422103A
Authority: CN
Inventors: 郑小春; 曾雪红; 徐龙; 孙炼
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-02-21
Filing date: 2011-02-21
Publication date: 2011-07-27
Anticipated expiration: 2031-02-21
Also published as: CN102137459B; WO2012113214A1

Abstract

The embodiment of the invention provides a method as well as related system and device for ensuring a CS (circuit-switched) domain of a one-card double-standby terminal to reside in two networks simultaneously, and the method is applicable to a network side and comprises the following steps: receiving a 2G (2nd generation) network position updating request and a 3G (3rd generation) network position updating request which are sent by a one-card terminal, wherein the requests carry same user identifications; completing CS domain position updating together with the terminal so as to lead the CS domain of the terminal to reside in a 2G network and a 3G network, and storing the position information of the terminal residing in the networks; and when receiving a CS domain service request sent by a calling user, preferably selecting the 2G network to perform CS domain service based on the stored 2G position information, and selecting the 3G network to perform the CS domain service based on the stored 3G position information when the 2G network position information does not exist or the 2G network can not meet the requirement of the CS domain service. According to the technical scheme, UE (user equipment) can reside in two networks simultaneously, and the 2G network is preferably selected to perform the CS domain service, thus avoiding frequent reselection between the 2G network and the 3G network, and improving the communication quality.

Description

The method of simultaneously resident two nets in single deck tape-recorder double-standby terminal CS territory and related system, device

Technical field

The embodiment of the invention relates to communication technical field, relates in particular to the method for simultaneously resident two nets in single deck tape-recorder double-standby terminal CS territory and related system, device.

Background technology

Along with development of Communication Technique, 3G (3rd-generation, the third generation communication technology), LTE (LongTerm Evolution, Long Term Evolution), WLAN high speed transfer of data communication networks such as (Wireless Local Area Networks, WLAN (wireless local area network)) is obtaining application more and more widely.The characteristics of these networks are that data service at a high speed can be provided, and some also support voice business are arranged simultaneously, and for example 3G network can the support voice business when data service at a high speed is provided.

Present most 3G terminal all is the 2G/3G dual-mode handset, for example WCDMA/GSM bimodulus, TD-SCDMA/GSM dual-mode handset.Existing 2G/3G dual-mode terminal is when communicating business, usually preferentially reside in 3G network, can gravity treatment arrive 2G (secondgeneration, the second generation communication technology) network when 3G network has signal, 3G network is arrived in gravity treatment again when the 3G network signal recovers.

Yet the existing 2G network coverage is good, and the not good situation of covering level often appears in 3G network, particularly indoor 3G poor signal.When communicating business, be easy to occur the situation of 3G terminal frequent gravity treatment between 2G network and 3G network thus.Between 2G network and 3G network, in the process of gravity treatment, cause easily leaking words, influence the communication quality of speech business thus.

Summary of the invention

The embodiment of the invention provides the method for simultaneously resident two nets in single deck tape-recorder double-standby terminal CS territory and related system, device, to improve the communication quality of 3G terminal speech business.

Wherein, the embodiment of the invention method of simultaneously resident two nets in a kind of single deck tape-recorder double-standby terminal CS territory is provided, be applied to single SIM card terminal, contain user ID in the described SIM card, described method comprises:

Send 2G network site update request and the 3G network position updating request that carries identical described user ID to network side, after making that described network side is received described 2G network site update request and 3G network position updating request, finish more new technological process of position, circuit switching (CS) territory with described terminal, thereby make the CS territory of described terminal reside in 2G network and 3G network;

When initiating CS territory service request, preferentially select described 2G network to carry out described CS territory business, when described 2G network does not satisfy described CS territory business need, select described 3G network to carry out described CS territory business.

The embodiment of the invention also provides the method for simultaneously resident two nets in a kind of single deck tape-recorder double-standby terminal CS territory, is applied to network side, comprising:

2G network site update request and 3G network position updating request that receiving terminal sends, described terminal is single SIM card terminal, contain user ID in the described SIM card, carry identical described user ID in described 2G network site update request and the described 3G network position updating request;

Finish more new technological process of position, circuit switching (CS) territory with described terminal, thereby make the CS territory of described terminal reside in 2G network and 3G network, preserve the positional information of the resident 2G network of described terminal and the positional information of 3G network simultaneously;

When the CS territory service request that receives that the calling subscriber sends, preferentially select the 2G network to carry out described CS territory business according to the positional information of the 2G network of preserving, when not existing 2G network location information or described 2G network not to satisfy described CS territory business need, select 3G network to carry out described CS territory business according to the positional information of the 3G network of preserving.

The embodiment of the invention also provides a kind of communication system, comprising:

The 2G moving exchanging center MSC, 3G moving exchanging center MSC, Home Location Register HLR, and calling mobile exchanging center MSC;

Described 2G MSC is used for, the 2G network site update request that receiving terminal sends; Described terminal is single Subscriber Identity Module SIM card, contains user ID in the described SIM card, and described 2G network site update request carries described user ID; Send the first network site update request to described HLR, the described first network site update request carries described user ID, 2G network identity and 2G MSC sign;

Described 3G MSC is used for, and receives the 3G network position updating request that described terminal sends; Described 3G network position updating request also carries described user ID; Send the second network site update request to described HLR, the described second network site update request carries described user ID, 3G network sign and 3G MSC sign;

Wherein, the type of place network when described 2G network identity and described 3G network sign is used to identify described terminal and sends position updating request, described 2G MSC sign and described 3G MSC identify the MSC that is used to identify the receiving position update request;

Described HLR is used for, preserve primary importance information according to described first network site update request that receives and the described second network site update request, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request; And notify described 2G MSC and described 3G MSC to insert user data, make the notified back of described 2G MSC and described 3G MSC preserve second place information, described second place information comprises the location area information of place network when terminal sends position updating request; If there are other MSC to preserve the second place information of haveing been friends in the past, then notify this MSC deletion old second place information;

Described caller MSC is used for, and receives the CS territory service request that the calling subscriber sends, and inquires about the routing iinformation of described terminal to described HLR;

Described HLR also is used for, and obtains routing iinformation according to the described primary importance information priority of preserving to described 2G MSC; When not existing in the described primary importance information when not satisfying described CS territory business need, obtain routing iinformation to 3G MSC corresponding to the positional information of 2G network or described 2G network;

Described 2G MSC or described 3G MSC also are used for, and return routing iinformation according to the described second place information of preserving to described HLR, so that described HLR returns the routing iinformation of described terminal to described caller MSC;

Described caller MSC also is used for, and sends the calling connection to described 2G MSC that returns routing iinformation or described 3GMSC, makes described 2G MSC or described 3G MSC make a call to described terminal according to the described second place information of preserving.

The 2G/3G moving exchanging center MSC, Home Location Register HLR, and calling mobile exchanging center MSC;

Described 2G/3G MSC is used for, 2G network site update request and 3G network position updating request that receiving terminal sends; Described terminal is single Subscriber Identity Module SIM card, contains user ID in the described SIM card, and described 2G network site update request carries identical described user ID with described 3G network position updating request; Send the first network site update request and the second network site update request to described HLR, the described first network site update request carries described user ID, 2G network identity and 2G/3G MSC sign, and the described second network site update request carries described user ID, 3G network sign and 2G/3G MSC sign;

Wherein, place network of network type when described 2G network identity and described 3G network sign is used to identify described terminal and sends position updating request, described 2G/3G MSC sign is used to identify the MSC of receiving position update request;

Described HLR is used for, upgrade the primary importance information of preserving according to the described first network site update request that receives and described second network site, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request; And notify described 2G/3G MSC to insert user data, carry described network type during notice, make the notified back of described 2G/3GMSC preserve second place information, described second place information comprises the location area information of place network when described network type and terminal send position updating request;

Described HLR also is used for, and obtains routing iinformation according to the described primary importance information of preserving to described 2G/3G MSC;

Described 2G/3G MSC also is used for, and returns routing iinformation to described HLR, so that described HLR returns the routing iinformation of described terminal to described caller MSC;

Described caller MSC also is used for, sending calling to the described 2G/3G MSC that returns routing iinformation connects, described 2G/3G MSC makes a call to described terminal by the 2G network according to the second place information priority of preserving, when not existing 2G network location information or described 2G network not to satisfy CS territory business need in the described second place information, described 2G/3G MSC makes a call to described terminal by 3G network according to the second place information of preserving.

Described HLR is used for, upgrade the primary importance information of preserving according to the described first network site update request that receives and described second network site, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request; And notify described 2G/3G MSC to insert user data, the network type that carried terminal inserts during notice, make the notified back of described 2G/3G MSC preserve second place information, described second place information comprises the location area information of place network when described network type and terminal send position updating request;

Described HLR also is used for, obtain the routing iinformation that is used for the 2G network according to the primary importance information priority of preserving to described 2G/3G MSC, when not existing in the described primary importance information when not satisfying CS territory business need, be used for obtaining the routing iinformation that is used for 3G network to described 2G/3G MSC corresponding to the positional information of 2G network or 2G network;

Described 2G/3G MSC also is used for, and returns the routing iinformation of specified network type to described HLR, so that described HLR returns the routing iinformation of described terminal to described caller MSC;

Described caller MSC also is used for, and sends to call out to the described 2G/3G MSC that returns routing iinformation to connect, and makes described 2G/3G MSC make a call to described terminal according to described second place information and the routing iinformation preserved.

The embodiment of the invention also provides a kind of terminal, and described terminal is single SIM card terminal, contains user ID in the described SIM card, and described terminal comprises:

The 2G processing module, be used for sending the 2G network site update request of carrying described user ID to network side, after making that described network side is received described 2G network site update request, finish more new technological process of position, circuit switching (CS) territory with described terminal, thereby make the CS territory of described terminal reside in the 2G network;

The 3G processing module, be used for sending the 3G network position updating request of carrying described user ID to network side, after making that described network side is received described 3G network position updating request, finish more new technological process of position, circuit switching (CS) territory with described terminal, thereby make the CS territory of described terminal reside in 3G network;

Select module, be used for when initiating CS territory service request, preferentially select described 2G network to carry out described CS territory business, when described 2G network does not satisfy described CS territory business need, select described 3G network to carry out described CS territory business by described 3G processing module by described 2G processing module.

The embodiment of the invention also provides a kind of MSC, and described MSC is for being used for the 2G/3G MSC of 2G network and 3G network simultaneously, and described MSC comprises: receiver module, sending module, route are returned module and are called out and select module;

Described receiver module is used for, 2G network site update request and 3G network position updating request that receiving terminal sends; Terminal is single SIM card, contains user ID in the SIM card, and 2G network site update request carries identical user ID with the 3G network position updating request; And the circuit switching (CS) territory of terminal is resident to 2G network and 3G network, and preserve the positional information of resident 2G network and the positional information of 3G network;

Described sending module is used for, send the first network site update request and the second network site update request to HLR, the first network site update request carries described user ID, 2G network identity and 2G/3G MSC sign, and the second network site update request carries user ID, 3G network sign and 2G/3G MSC sign;

By sending the first network site update request and the second network site update request, make HLR upgrade the primary importance information of preserving according to the described first network site update request that receives and described second network site, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request;

Described receiver module also is used for, receive HLR and receive the insertion user data notice that sends after the first network site update request and the second network site update request, place network of network type when carried terminal sends position updating request in this notice, second place information is preserved in notified back, and described second place information comprises the location area information of place network when described network type and terminal send position updating request;

Described receiver module also is used for, receive the request of obtaining routing iinformation that HLR sends, wherein, HLR is the request of obtaining routing iinformation that sends when receiving the request of caller MSC inquiry routing iinformation, caller MSC is when the CS territory service request that receives that the calling subscriber sends, and sends the request of inquiry routing iinformation to HLR;

Described route is returned module and is used for, and according to the request of HLR, returns routing iinformation to HLR, so that HLR returns the routing iinformation of terminal to caller MSC;

Call out and select module to be used for, receiving caller MSC connects according to the calling that routing iinformation sends, and make a call to terminal by the 2G network according to the second place information priority of preserving, when the 2G network does not satisfy CS territory business need, make a call to terminal by 3G according to the second place information of preserving.

The embodiment of the invention also provides a kind of HLR, comprising: the position is upgraded receiver module, is preserved module and route acquisition module;

Described position is upgraded receiver module and is used for, receive the first network site update request and the second network site update request that 2G moving exchanging center MSC and 3G MSC send respectively, the described first network site update request carries user ID, 2G network identity and 2G MSC sign, and the described second network site update request carries user ID, 3G network sign and 3G MSC sign;

Wherein, the type of place network when the terminal that described 2G network identity and described 3G network sign is used to identify described user ID correspondence sends position updating request, described 2G MSC sign and described 3GMSC identify the MSC that is used to identify the receiving position update request;

Described preservation module is used for, preserve primary importance information according to described first network site update request that receives and the described second network site update request, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request; And notify described 2G MSC and described 3G MSC to insert user data, and make the notified back of described 2G MSC and described 3G MSC preserve second place information, described second place information comprises the location area information of place network when terminal sends position updating request; If there are other MSC to preserve the second place information of haveing been friends in the past, then notify these other MSC deletions old second place information; Comprise the sign of described terminal during described primary importance information of same at the MSC of 2G network and 3G network;

Described route acquisition module is used for, and receives the request of the routing iinformation of the described terminal of inquiry that caller MSC sends, and obtains routing iinformation according to the described primary importance information of preserving to described 2G MSC; When not existing in the described primary importance information when not satisfying described CS territory business need, obtain routing iinformation to 3G MSC corresponding to the positional information of 2G network or 2G network; Caller MSC is when the CS territory service request that receives that the calling subscriber sends, and sends the request of inquiry routing iinformation to described HLR;

Described route acquisition module also is used for, and returns the routing iinformation of described terminal to described caller MSC.

The method of simultaneously resident two nets in the single deck tape-recorder double-standby terminal CS territory of the embodiment of the invention and related system, device, terminal is in start or after the position moves, send the 2G network site update request and the 3G network position updating request of the user ID carry this terminal to network side, make this terminal can reside in 2G network and 3G network simultaneously; When carrying out CS territory business, terminal or network side preferentially select the 2G network to communicate, and when the 2G network does not satisfy CS territory business need, select 3G network to communicate.Because terminal resides in 2G network and 3G network simultaneously in the embodiment of the invention, and the professional preferential 2G network of selecting in CS territory communicates, because it is more better that the 2G network is compared the common covering of 3G network signal, therefore, preferential selection 2G network can improve the communication quality based on the CS territory business of speech business, avoid the frequent gravity treatment between the 2G network and 3G network in the prior art, improved communication quality; Simultaneously, since in the embodiment of the invention when the 2G network does not satisfy CS territory business need and 3G network and can satisfy CS territory business need, select 3G network to carry out CS territory business, because terminal has resided in 3G network, therefore, do not need to initiate more new technological process of read apparatus message, position, can not increase the connection time delay.

Description of drawings

In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done an introduction simply in will describing embodiment below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

The flow chart of the method for simultaneously resident two nets in the single deck tape-recorder double-standby terminal CS territory that Fig. 1 provides for the embodiment of the invention one;

The flow chart of the method for simultaneously resident two nets in the single deck tape-recorder double-standby terminal CS territory that Fig. 2 provides for the embodiment of the invention two;

The terminal that Fig. 3 provides for the embodiment of the invention three is carried out the flow chart of position method for updating;

Fig. 4 A is the schematic diagram that 2G CS domain core net and 3G CS domain core net are separately disposed;

Fig. 4 B is the schematic diagram that 2G CS domain core net and the unification of 3G CS domain core net are disposed;

The position that Fig. 5 A provides for the embodiment of the invention four is the flow chart of new technological process more;

Fig. 5 B is the schematic diagram of the resident core net of terminal in Fig. 5 A illustrated embodiment;

The position that Fig. 5 C provides for the embodiment of the invention six is the flow chart of new technological process more;

Fig. 5 D is the schematic diagram of Fig. 5 C illustrated embodiment Position Updating;

The position that Fig. 5 E provides for the embodiment of the invention seven is the schematic diagram of new technological process Position Updating more;

The flow chart of the network side processed voice called service that Fig. 6 provides for the embodiment of the invention eight;

The flow chart of the speech called flow process that Fig. 7 A provides for the embodiment of the invention nine;

The flow chart of the speech called flow process that Fig. 7 B provides for the embodiment of the invention ten;

The flow chart of the speech called flow process that Fig. 7 C provides for the embodiment of the invention 11;

The flow chart of the reception short message service that Fig. 8 provides for the embodiment of the invention 12;

The flow chart of the reception short message service flow process that Fig. 9 A provides for the embodiment of the invention 13;

The flow chart of the reception short message service flow process that Fig. 9 B provides for the embodiment of the invention 14;

The flow chart of the reception short message service flow process that Fig. 9 C provides for the embodiment of the invention 15;

The schematic diagram of the terminal that Figure 10 provides for the embodiment of the invention 16;

The structural representation of the MSC that Figure 11 provides for the embodiment of the invention 17;

The structural representation of the HLR that Figure 12 provides for the embodiment of the invention 18.

Embodiment

For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

Embodiment one

The flow chart of the method for simultaneously resident two nets in the single deck tape-recorder double-standby terminal CS territory that Fig. 1 provides for the embodiment of the invention one, be applied to terminal (User Equipment is designated hereinafter simply as: UE), as shown in Figure 1, this method comprises:

Step 101, send 2G network site update request and the 3G network position updating request carry the same subscriber sign to network side, after making that network side is received 2G network site update request and 3G network position updating request, finish CS (circuit switching with UE, Circuit Switching) position, territory new technological process more, thus make the CS territory of UE reside in 2G network and 3G network;

The executive agent of present embodiment is that (User Equipment is designated hereinafter simply as: UE) terminal.UE in the present embodiment can be single Subscriber Identity Module (SIM) card terminal, contain user ID in this SIM card, promptly this UE is the 2G/3G dual-mode terminal, this UE uses a usim card, USIM is global Subscriber Identity Module (Universal SubscriberIdentity Module), be the subscriber card that 3G network is introduced, can be considered as special SIM card, usim card and SIM card are not carried out the strictness differentiation in the embodiment of the invention.

Need to prove, in the embodiment of the invention, " the CS territory is resident to 2G (or 3G) network " also be can be understood as: with " the CS territory is attached to 2G (or 3G) network ", promptly terminal is initiated LAU (LocationArea Update, location area updating) process and is attached to 2G (or 3G) network.

UE is after after the start or the 2G of UE and 3G network position is moved, and UE sends 2G and 3G network position updating request (sequencing does not limit) to network side; Concrete, UE can (Mobile Switching Center be designated hereinafter simply as: MSC) send position updating request to the mobile switching centre of 2G network and 3G network correspondence; Wherein, the user ID of carrying this UE in 2G and the 3G network position updating request, follow-up by the position more new technological process make this UE can reside in 2G and the 3G network.

Above-mentioned user ID can (International MobileSubscriber Identity abbreviates as: IMSI), network side can be discerned UE by user ID for international mobile subscriber identity.Wherein, in the embodiment of the invention, terminal is used a SIM (USIM) card, carries identical user ID in 2G network site update request and 3G network position updating request.

By this step, can finish terminal CS territory two resident at two heterogeneous networks, to carry out CS territory business (being mainly speech business and short message service).In the practical application, in some cases, if when first network does not satisfy resident condition, can be only resident to second network, whether periodically detecting first network satisfies resident condition then, when satisfying, simultaneously resident to first network.For example, when the 2G signal did not satisfy resident condition, the CS territory can only reside in 3G network, and UE periodically detects the 2G signal, and when the 2G signal recovered, it is resident in 2G network and 3G network that recover in the CS territory.Be 2G/3G " the single deck tape-recorder list is treated " dual-mode terminal that is different from standard, the UE in the present embodiment can be called 2G/3G " single deck tape-recorder is two to be treated " dual-mode terminal.

Finish resident after, terminal can also be preserved the 2G positional information and the 3G positional information of resident network, be specially certain lane place in the 2G network and certain lane place in the 3G network, when if follow-up terminal finds that the lane place of handled lane place and preservation is inconsistent, initiate more new technological process of position, resident to current lane place.

Step 102, when initiating the CS territory when professional, preferentially select the 2G network to carry out CS territory business, when the 2G network does not satisfy CS territory business need, select 3G network to carry out CS territory business.

UE preferentially selects the 2G network to communicate according to the positional information (certain lane place in the 2G network) of the network of preserving when initiating CS territory business, for example:

When UE initiated the voice caller, UE was according to the professional network selection strategy of configuration, and preferentially the positional information according to the 2G network of preserving makes a call in the 2G network, and this call flow is consistent with normal process;

When UE initiatively sent SMS message, UE preferentially sent SMS message in the 2G network according to the professional network selection strategy of configuration, and this flow process is consistent with normal process.

Further, if the 2G network does not satisfy CS territory business need (as the 2G network signal relatively poor or the 2G network load is too high or the unsupported video call service of 2G network), then can select 3G network to communicate.

Further, consider the influence of minimizing to existing ordinary terminal, need to distinguish the single deck tape-recorder double-standby terminal, network is only handled according to the present invention the single deck tape-recorder double-standby terminal.The single deck tape-recorder double-standby terminal carries single deck tape-recorder double-standby terminal sign when sending position updating request, make differentiating and processing behind the Network Recognition single deck tape-recorder double-standby terminal.

UE in the present embodiment resides in 2G network and 3G network simultaneously, but usim card has only one, can only preserve a sets of data, another set of data can be kept at UE memory space (flash memory for example, FlashMemory) in, by UE on behalf of management.

Specifically comprise on behalf of the data of management by UE:

The data message that the position is relevant comprises: and location area information (Location Area Information abbreviates as: LAI), and position update mode (Location update status);

(Temporary Mobile Subscriber Identity abbreviates as: TMSI) in temporary identity identification;

Network initial search parameters, for example frequency etc.

The embodiment of the invention, UE is in start or after the position moves, and sends the 2G network site update request and the 3G network position updating request of the user ID of carrying this UE to network side, makes this UE can reside in 2G network and 3G network simultaneously; When carrying out CS territory business, UE preferentially selects the 2G network to communicate, if the 2G network signal does not satisfy CS territory business need, then selects 3G network to communicate.Because UE resides in 2G network and 3G network simultaneously in the embodiment of the invention, and communicate for the professional preferential 2G network of selecting in CS territory, because it is generally good than 3G network that the information of 2G network covers, therefore, preferential selection 2G network can improve the communication quality based on the CS territory business of speech business, avoid the frequent gravity treatment between 2G network and the 3G network, improved communication quality; And when the 2G network signal does not meet the demands or when using video call service, can also use 3G network, select 3G network to carry out the CS territory when professional as backup, UE has resided in 3G network, therefore, do not need to initiate more new technological process of read apparatus message, position, can not increase the connection time delay.

Embodiment two

The flow chart of the method for simultaneously resident two nets in the single deck tape-recorder double-standby terminal CS territory that Fig. 2 provides for the embodiment of the invention two is applied to network side, and as shown in Figure 2, this method comprises:

2G network site update request and 3G network position updating request that step 201, reception UE send are finished more new technological process of position, CS territory with UE, thereby are made the CS territory of UE reside in 2G network and 3G network; Also preserve the positional information of resident 2G network and the positional information of 3G network simultaneously.

UE in the present embodiment is single SIM card terminal, contains user ID in the SIM card, carries identical user ID in 2G network site update request and the 3G network position updating request.

The executive agent of present embodiment is the relevant device (hereinafter to be referred as network side) of network side.UE sends position updating request to network side after after the start or the network site of UE is moved; Network side receives this position updating request that UE sends, and finishes more new technological process of position, CS territory with UE, thereby makes the CS territory of UE reside in 2G network and 3G network.

Comprise the user ID of this UE in this position updating request, and carry this UE current position information.Concrete, when UE after the position of 2G network is upgraded, network side receives the 2G network site update request that UE sends; When UE after the position of 3G network is upgraded, network side receives the 3G network position updating request that UE sends.

UE sends position updating request to 2G network and 3G network, and network side is preserved 2G network location information and the 3G network positional information of UE according to this position updating request, makes this UE reside in simultaneously in 2G network and the 3G network.

Wherein, network side can comprise that (Home Location Register is designated hereinafter simply as: HLR) wait network element device for MSC and attaching position register.MSC receives the position updating request that UE sends, and the sign with user ID, network identity and this MSC of this UE sends to HLR then; HLR returns to MSC and inserts the user data indication, and MSC preserves the positional information of this UE under this network identity then.

Step 202, when the CS territory service request that receives that the calling subscriber sends, preferentially select the 2G network to carry out CS territory business according to the positional information of the 2G network of preserving; When the positional information that does not have the 2G network or 2G network do not satisfy CS territory business need, select 3G network to carry out CS territory business according to the positional information of the 3G network of preserving.

Wherein, the UE in the present embodiment is the called subscriber.Network side preferentially selects the 2G network to communicate according to the positional information of the 2G network of preserving when receiving calling subscriber CS territory service request (as voice call service request or short message service request).

Further, if do not exist the positional information of 2G network or 2G network not to satisfy CS territory business need, network side selects 3G network to communicate according to the positional information of the 3G network of preserving, and for example network side can be selected to send audio call or receive short message from 3G network.

Concrete, the positional information of described 2G network and the positional information of described 3G network comprise primary importance information and second place information;

Described primary importance information comprises network type and the MSC sign that is stored among the Home Location Register HLR, wherein, the type of the network at place when network type is terminal transmission position updating request, MSC is designated the sign of the MSC of receiving position update request;

Described second place information comprises described network type (type of place network when being terminal transmission position updating request) and the location area information that is stored in the moving exchanging center MSC, lane place when wherein, described location area information is terminal transmission position updating request in the network of place.

The embodiment of the invention, after moving in UE start or position, network side receives the position updating request of the user ID of carrying this UE that UE sends, and makes this UE can reside in 2G network and 3G network simultaneously; When carrying out CS territory business, network side preferentially selects the 2G network to communicate; If the 2G network signal does not satisfy CS territory business need, then select 3G network to communicate.Because UE resides in 2G network and 3G network simultaneously in the embodiment of the invention, and network side communicates for the professional preferential 2G network of selecting in CS territory, because it is generally good than 3G network that the information of 2G network covers, therefore, preferential selection 2G network can improve the communication quality based on the CS territory business of speech business, avoid the frequent gravity treatment between 2G network and the 3G network, improved communication quality; And when not meeting the demands, can also use the 2G network signal 3G network as backup, when selecting 3G network to carry out CS territory business, because UE has resided in 3G network, therefore, do not need to initiate more new technological process of read apparatus message, position, thereby can not increase the connection time delay.

Further, consider the process of network design, exist subnetwork to support the two standby service abilities (promptly satisfying the requirement of the embodiment of the invention) of single deck tape-recorder to network side, subnetwork is not supported the two standby service abilities of single deck tape-recorder, UE needs the recognition network ability, and is only resident to a network when network does not possess the two standby service ability of single deck tape-recorder.

In order to make UE recognition network ability, network side can carry the network capabilities sign in broadcast system message, for example: at RNS (Radio Network Subsystem, radio network sub-system) goes up configuration network and whether support the two standby service abilities of single deck tape-recorder, when having disposed this business of support, in broadcast system message, carry the two ability label for the treatment of of network support single deck tape-recorder, judge network capabilities in the UE read system message, terminal work mode is set, have only the system message of 2G/3G all to indicate when the support single deck tape-recorder is two treats ability, just enable the two standby function patterns of single deck tape-recorder.

Further, consider the influence of minimizing to existing ordinary terminal, need to distinguish the single deck tape-recorder double-standby terminal, Network Recognition single deck tape-recorder double-standby terminal is only handled according to the present invention the single deck tape-recorder double-standby terminal.

Need to prove, in real network is disposed, also need VLR (Visitor LocationRegister, VLR Visitor Location Register) stores with professional relevant information, for convenience of description, various embodiments of the present invention are to MSC and the not strict differentiation of VLR, and the function among the VLR is all incorporated among the MSC and discussed, and those skilled in the art can realize the scheme in the embodiment of the invention according to the situation that real network is disposed.

In the actual deployment of network, MSC can comprise the 2G MSC that is used to handle the 2G business, is used to the caller MSC that handles the 3G MSC of 3G business and be used to handle calling service.Above-mentioned division to MSC is based on function and divides, and in the actual process, the MSC that finishes these functions can be a physical NE (MSC), or a plurality of physical NE.For example, 2G MSC and 3G MSC are finished by two physics MSC respectively, and perhaps 2G MSC and 3G MSC are finished by a physics MSC, remember that this physics MSC is 2G/3G MSC.In like manner, caller MSC also can use same physics MSC with 2G MSC or 3G MSC or 2G/3G MSC.

Below among each embodiment, for convenience of description, use 2G MSC respectively, 3G MSC, caller MSC and 2G/3G MSC represent a physics MSC separately.The example that those skilled in the art can provide by the embodiment of the invention, and realize this programme in conjunction with real network deployment scenario (adopting one or more physics MSC).

Embodiment of the invention technical scheme can be total be divided into two stages, first stage is the position update stage, is used to finish 2G and 3G position and upgrades; Second stage is CS territory Business Processing stage (audio call and short message), is used for selecting 2G MSC or 3G MSC to carry out CS territory Business Processing after caller MSC or SMC (Short Message Center, short message service center) receive CS territory business.To specifically describe the technical scheme that the embodiment of the invention provides by specific embodiment below.

Embodiment three

Based on the foregoing description one, two, the embodiment of the invention three provides a kind of terminal to carry out the position method for updating, comprise that with network side MSC, HLR network element device are that example describes, the terminal that Fig. 3 provides for the embodiment of the invention three is carried out the flow chart of position method for updating, referring to Fig. 3, this method comprises:

Step 301, UE send the position updating request of the user ID of carrying this UE to MSC.

UE is in when start or the network site takes place when moving, and sends position updating request to MSC.The MSC here is meant the MSC of the network correspondence after the MSC or the UE occurrence positions of place, UE start back network correspondence move (as moving to 3G network from the 2G network).Need to prove that UE only moves (for example moving to another 2G lane place from a 2G lane place) in the network that a MSC is responsible for sometimes, then this moment, MSC was same MSC with original MSC; In addition, when UE sends request, do not need to know concrete MSC, get final product and only need send request in current network, back extended meeting is received by the MSC of network correspondence and handles this request, and the embodiment of the invention (comprising other embodiment) is explained in the mode of " UE sends position updating request to MSC " for the process of position updating request from UE to MSC is described, this statement does not also mean that UE needs oneself to know the MSC that will send, and sends request to this MSC.

The user ID of UE is used for UE user is identified, and for example can be IMSI mentioned above.

In addition, UE also can carry " terminal capability sign " in position updating request, promptly be used for identifying UE and whether possess the single deck tape-recorder terminal of resident two networks simultaneously (or claiming single deck tape-recorder double-standby terminal) for the embodiment of the invention, if undertaken by the follow-up flow process of the embodiment of the invention after MSC receives; If not, then MSC walks normal handling flow process in the prior art.By carry " terminal capability sign " can make the processing of network side can compatible better terminal of the prior art and the embodiment of the invention in the single deck tape-recorder double-standby terminal that provides.

After step 302, MSC receive the position updating request of UE transmission, send position updating request, and in request, carry user ID, network identity and MSC sign to HLR;

Need to prove that MSC is two different position updating request to position updating request and the UE that HLR sends to the position updating request that MSC sends, its specific implementation can be referring to the explanation in the standard.

The user ID here is identical with user ID in the step 301; The type of place network for example, was 2G network or 3G network when the network identity here was used for marking terminal transmission position updating request; The sign of the MSC here is used to identify the MSC of receiving position update request, and for example, when a plurality of MSC was arranged, MSC was designated MSC1 or MSC2.

The positional information that step 303, HLR preserve UE according to each sign in the position updating request that receives;

In order to distinguish the positional information that MSC preserves in the subsequent step, claim that the positional information here is " a primary importance information ", final primary importance information is: certain user (being determined by user ID) is at certain network (being determined by network identity), corresponding to certain MSC (being determined by the MSC sign).For example, user A is at the 2G network, and corresponding MSC is MSC1.

Need to prove, when UE is the position updating request that network a MSC correspondence sends when moving to the network of another MSC correspondence, then HLR also will return the indication of deletion user data to Anchor MSC, so that the positional information of Anchor MSC deletion this UE wherein, in the middle of Indication message, should carry the type (as the 2G network) of the positional information that will delete and corresponding positional information be deleted with instruct MS C.

When UE sends position updating request is when mobile, after then MSC receives this position updating request in step 302, directly preserve the positional information of this UE under the current network sign, and need not to notify HLR in the network of a MSC correspondence.This is because UE moves in MSC, and for before moving and for the mobile back, this UE corresponding MSC under the current network sign is MSC, so need not to change the record among the HLR.

Step 304, HLR send " insertion user data " message to MSC, carry network identity in the message; The network identity here is identical with the implication that the network identity in the step 302 is represented;

The positional information that step 305, MSC also preserve UE according to the message that receives;

Claim that the positional information here is " second place information ", so as with HLR in " primary importance information " distinguish mutually.The second place information that writes down in MSC is specially: certain user is arranged in certain lane place of certain network.For example, user A is arranged in the 2G1 lane place of 2G network, and the 2G1 here represents a lane place of 2G network, similarly, hereinafter represents another lane place of 2G network with 2G2, and 3G1,3G2 represent two lane place of 3G network.In MSC, do not need as writing down MSC information among the HLR, because this information MSC oneself knows yet.

In fact, in step S302, MSC also can write down second place information after receiving the updating of terminal position request.When the embodiment of the invention preserves location information of terminals to MSC and HLR does not limit, as long as the back is upgraded in the position location information of terminals is arranged all in MSC and HLR.

After step 305, during the service request of if network side receives that the calling subscriber sends CS territory, need to select the terminal occurrence positions move the resident network in back (by above-mentioned position more new technological process finish resident) carry out this CS territory business, the network after then the positional information of the positional information of the 2G network of network side after according to the renewal of preserving and/or 3G network is selected to upgrade is carried out this CS territory business.

In addition, in the various embodiments of the present invention, UE is not limited to just send position updating request in start or position after moving, but all sends position updating request when trigger condition (as periodic location update) is upgraded in any position satisfying; Wherein trigger condition existing specific definition in consensus standard does not repeat them here.When UE sends position updating request, corresponding M SC can be according to this position updating request renewal positional information wherein, and whether MSC can moving or whether be for the first time in this MSC registration between the MSC be taken place according to this UE, judge whether to upgrade the information among the HLR, if the change of the MSC that does not cause the UE correspondence is upgraded in the position of UE, then need not to upgrade the record among the HLR.

In the various embodiments of the present invention, 2G CS domain core net and 3G CS domain core net can separately be disposed, and promptly 2G network, 3G network correspond respectively to a MSC; Also can unify deployment is that 2G, 3G network are all corresponding to a MSC.Fig. 4 A is the schematic diagram that 2G CS domain core net and 3G CS domain core net are separately disposed, and Fig. 4 B is the schematic diagram that 2G CS domain core net and the unification of 3G CS domain core net are disposed.Wherein, according to the situation of UE transmission position updating request, and the deployment scenario of 2G CS domain core net and 3G CS domain core net, the position is the process difference of new technological process more.Below by Fig. 5 A-Fig. 5 E to position shown in Figure 3 more new technological process be described in detail.

Embodiment four

The position that Fig. 5 A provides for the embodiment of the invention four is the flow chart of new technological process more, Fig. 5 B is the schematic diagram of the resident core net of terminal in Fig. 5 A illustrated embodiment, in the present embodiment, a lane place (3G1) that is positioned at a lane place (2G1) of 2G network and is positioned at 3G network during the UE start, by 2G and 3G position more new technological process finish resident at 2G network and 3G network, shown in Fig. 5 A, specifically comprise:

Step 501A, UE send the position updating request of the 2G network that carries the UE user ID to MSC1.

Step 502A, MSC1 send the position updating request of carrying user ID, network identity and MSC sign to HLR;

Because the position that is the 2G network is upgraded, so network identity is " 2G network " sign (being that the indication network type is the 2G network); Referring to Fig. 5 B, because the MSC of 2G network correspondence is MSC1, so the MSC here is designated " MSC1 " sign (being that instruct MS C is MSC1).

Send position updating request by MSC1, HLR receives that the back just can preserve following terminal primary importance information: i.e. the terminal use A of 2G network, and the MSC of correspondence is MSC1; Use in the drawings:

" user A:2G network: MSC1 " represented.Wherein, user A is the UE in the present embodiment.

Above-mentioned positional information also can be represented with the mode of following table 1, with convenient explanation.

Table 1

The user	Network type	The MSC sign
			Terminal use A	The 2G network	MSC1

When specific implementation, this part can be preserved temporarily, is saved in actual memory block again after subsequent step (as 504A) is finished by the time, if subsequent step is failed, then can discharge the content of interim preservation.In fact, in the embodiment of the invention, preserve positional information as long as upgrade the end back, and do not preserve after not being limited to which step in the position.

Step 503A, HLR send " insertion user data " message to MSC1, carry network identity in message;

Catch up with that to state among the step 502A network identity the same, the network identity here also is " 2G network " sign, is used to allow MSC according to this sign preservation second place information.

By step 503A, can be so that MSC1 preserves terminal positional information according to the message that receives;

The terminal second place information here is: terminal is arranged in which lane place of which network.Shown in Fig. 5 B, terminal is arranged in the 2G1 lane place of 2G network, and therefore, the information of preservation is " terminal use A is positioned at the 2G1 lane place ", represents with " user A:2G network: 2G1 " among Fig. 5 A.Above-mentioned positional information also can be represented with the mode of following table 2, with convenient explanation.

Table 2

The user	Network type	The lane place
			Terminal use A	The 2G network	2G1

As described in front embodiment three, the step of MSC1 preservation terminal positional information is carried out after also can being placed on step 501A.

Step 504A, MSC1 send " inserting user data confirms " message to HLR.

Step 505A, HLR send " position is upgraded and confirmed " message to MSC1.

Step 506A, MSC1 send " position is upgraded and accepted " message to UE.

Flow process among the step 503A-step 506A and each message all have definition in standard, those skilled in the art can realize above-mentioned steps according to the explanation in the standard, do not repeat them here.Promptly finished UE by above-mentioned steps and upgraded, and on HLR and MSC, preserved location information of terminals in the position of 2G network.

In like manner, the flow process and the above-mentioned steps of carrying out the position renewal at 3G network are similar, comprising:

Step 507A, UE send the position updating request of the 3G network that carries the UE user ID to MSC1.

Step 508A, MSC1 send user ID, carry the position updating request of network identity and MSC sign to HLR; Network identity is specially " 3G network ", and the MSC sign still is " MSC1 "; After this step, become at user position information among the HLR: " user A:2G network: MSC1, and 3G network: MSC1 ".

Step 509A, HLR send " insertion user data " message to MSC1, carry network identity in message; Network identity is specially " 3G network "; After MSC1 receives message, increase the lane place of 3G again in positional information, shown in Fig. 5 B, the 3G lane place is 3G1, and therefore, the last positional information of terminal in MSC1 is " user A:2G1 and 3G1 ".

Need to prove,, then notify this MSC deletion old terminal location district information if there are other MSC to preserve the terminal location district information of haveing been friends in the past.For example, suppose to upgrade the back and handle 2G or 3G business, then need the old information among the MSC1 is deleted by MSC2.When sending deletion message, also carry network type, make old MSC (as MSC1) delete the second place information of specified network type, as delete " 2G network: 2G3 " positional information of user A.

Step 510A, MSC1 send " inserting user data confirms " message to HLR.

Step 511A, HLR send " position is upgraded and confirmed " message to MSC1.

Step 512A, MSC1 send " position is upgraded and accepted " message to UE.

Pass through said process, can finish the location area updating of terminal at 2G network and 3G network, wherein, step 501A-step 506A is that the position that UE initiates in the 2G1 lane place of 2G network MSC1 is upgraded, step 507A-step 512A is that the position that UE initiates in the 3G1 lane place of 3G network MSC1 is upgraded, and the flow process that these two kinds of positions are upgraded is similar.In addition, present embodiment does not limit the order of 2G and 3G network renewal, that is to say, can first execution in step 507A-512A, execution in step 501A-506A more yet.

Embodiment five

The embodiment of the invention five provides more new technological process of another location, and this position more application scenarios of new technological process is: UE start back two networks in place, CS territory (also promptly needing resident 2G network and 3G network) correspond respectively to a MSC, for example, suppose here:

The 2G network is corresponding to MSC1;

3G network is corresponding to MSC2;

At this scene, terminal sends position updating request to MSC1 (upgrading corresponding to the 2G position) and MSC2 (upgrading corresponding to the 3G position) respectively when carrying out the renewal of 2G or 3G position; MSC1, MSC2 and HLR processing method can not repeat them here referring to the step among the embodiment four.

At last, the customer position information of preserving in HLR is: " user A:2G network: MSC1, and 3G network: MSC2 "; The customer position information of preserving in MSC1 and MSC2 is corresponding to certain lane place in certain network (be equivalent to the positional information among the MSC among the embodiment three is splitted into two, preserved separately by two MSC).

In the embodiment of the invention, when HLR sends when inserting subscriber data message or deletion subscriber data message to MSC1 or MSC2, can not carry network identity, because each MSC is only corresponding to a network, this MSC does not need to distinguish 2G network or 3G network, therefore just need not to carry network identity.In like manner, also need not the information of storage networking type in the second place information.

Embodiment six

The position that Fig. 5 C provides for the embodiment of the invention six is the flow chart of new technological process more, and Fig. 5 D is the schematic diagram of Fig. 5 C illustrated embodiment Position Updating, in the present embodiment applied scene:

(2G, 3G network are corresponding to same MSC) disposed in core net unification, shown in Fig. 5 D, MSC1 both corresponding to 2G network (lane place 2G1 and 2G2) also corresponding to 3G network (lane place 3G1 and 3G2); MSC2 is both corresponding to 2G network (as 2G3,2G4), also corresponding to 3G network (as 3G3,3G4).UE is arranged in the network (2G2,3G2) of MSC1 correspondence at the beginning, and subsequent movement is to the network (2G3,3G3) of MSC2 correspondence.

Shown in Fig. 5 C, embodiment of the invention position more new technological process comprises:

Step 501C, UE send the position updating request of the 3G network that carries the UE user ID to MSC2.

As described in Fig. 5 C, UE moves, and the 3G network position of UE moves to the 3G3 lane place of MSC2, the operation of UE execution in step 501C thus from the 3G2 lane place of MSC1.

After step 502C, MSC2 received the position renewal of UE initiation, inquiry then sent to HLR and carries the position updating request that user ID, 3G network sign and MSC2 identify at the 3G position record that this MSC2 does not have this user.

Because the position that is 3G network is upgraded, so network identity is " 3G network " sign (being that the indication network type is a 3G network); Referring to Fig. 5 D, be MSC2 because 3G network moves the corresponding MSC in back, so the MSC here is designated " MSC2 " sign (being that instruct MS C is MSC2).

Send position updating request by MSC2, HLR receives that the back just can preserve following terminal primary importance information: i.e. the terminal use A of 3G network, and the MSC of correspondence is MSC2; Use in the drawings:

" user A:3G network: MSC2 " represented.Wherein, user A is the UE in the present embodiment.

Above-mentioned positional information also can be represented with the mode of following table 3, with convenient explanation.

Table 3

The user	Network type	The MSC sign
			Terminal use A	3G network	MSC2

Step 503C, HLR send " insertion user data " message to MSC2, carry network identity in message; The same with the network identity among the above-mentioned steps 502C, the network identity here also is " 3G network " sign.

By step 503C, can be so that MSC2 preserves terminal second place information according to the message that receives; The second place information here is: terminal is arranged in which lane place of which network.Shown in Fig. 5 D, after moving, terminal is positioned at 3G network 3G3 lane place, and therefore, the information of preservation is " the 3G3 lane place that terminal use A is positioned at 3G network ", represents with " user A:3G network: 3G3 " among Fig. 5 C.Above-mentioned positional information also can be represented with the mode of following table 4, with convenient explanation.

Table 4

The user	Network type	The lane place
			Terminal use A	3G network	3G3

As described in front embodiment three, the step of MSC2 preservation terminal positional information is carried out after also can being placed on step 501C.

Step 504C, MSC2 send " inserting user data confirms " message to HLR.

After " inserting user data confirms " message that step 505C, HLR reception MSC2 returns, HLR sends " deletion user data " message of carrying the 3G network sign to MSC1.

UE moves to MSC2 from MSC1, the positional information of the UE that MSC1 Central Plains will be pre-existed deletion thus.When sending message, also carry network type, make old MSC (MSC1) delete the second place information of specified network type.

Step 505C can not need just to carry out after carrying out 503C, 504C by the time, but can with the 503C executed in parallel.

Step 506C, MSC1 receive the deletion subscriber data message, according to the sign of the 3G network in the message, and the user 3G position record position information among the deletion MSC1, and return user data to HLR and delete acknowledgement message.

After step 507C, HLR received the deletion user data acknowledgement message of MSC1, HLR sent " position is upgraded and confirmed " message to MSC2.

Step 508C, MSC2 send " position is upgraded and accepted " message to UE.

Promptly finished UE by above-mentioned steps and upgraded, and on HLR and MSC, preserved location information of terminals in the position of 3G network.

In like manner, the flow process and the above-mentioned steps of carrying out the position renewal at the 2G network are similar, comprising:

Step 509C, UE send the position updating request of the 2G network that carries the UE user ID to MSC2.

As described in Fig. 5 D, UE moves, the 2G3 lane place of the 2G network site of UE from the 2G2 location area updating of MSC1 to MSC2, the operation of UE execution in step 509C thus.

Need to prove, in the present embodiment, 3G network position and the 2G network site of UE all move to MSC2 from MSC1, yet present embodiment is not limited to this, for example: the 3G network position of UE can move to MSC2 from MSC1, and the 2G network site can move to MSC4 from MSC3.

Step 510C, MSC2 send user ID, carry the position updating request of network identity and MSC sign to HLR; Network identity is specially " 2G network ", and MSC is designated " MSC2 "; After this step, become at user position information among the HLR: " user A:2G network: MSC2, and 3G network: MSC2 ".

Step 511C, HLR send " insertion user data " message to MSC2, carry network identity in message; Network identity is specially " 2G network "; After MSC2 receives message, increase the lane place of 2G again in positional information, shown in Fig. 5 D, the 2G lane place is 2G3, and therefore, the last second place information of terminal in MSC2 is " user A:2G network: 2G3 and 3G network: 3G3 ".

Step 512C, MSC2 send " inserting user data confirms " message to HLR.

Step 513C, HLR send the deletion subscriber data message of carrying the 2G network identity to MSC1.

Step 514C, MSC1 receive the deletion subscriber data message, according to the 2G network identity in the message, and the user 2G position record among the deletion MSC1, and return user data to HLR and delete acknowledgement message.

Step 515C, HLR send " position is upgraded and confirmed " message to MSC2.

Step 516C, MSC2 send " position is upgraded and accepted " message to UE.

By said process, can finish the location area updating of terminal at 2G network and 3G network.Wherein, step 501C-step 508C is that UE upgrades in the position of 3G network, and step 509C-step 516C is that UE upgrades in the position of 2G network, and the flow process that these two kinds of positions are upgraded is similar.In addition, present embodiment does not limit the order of 2G and 3G network renewal.

Embodiment shown in Fig. 5 C and Fig. 5 D is the scene that 2G and 3G reside in same core net, and the position of UE is moved and is not limited to this in the present embodiment, can also be applied in the scene that 2G and 3G reside in different core net.

Embodiment seven

The embodiment of the invention seven provides more new technological process of another location, and this position more application scenarios of new technological process is: resident two networks in the CS territory of UE are corresponding to same MSC, and UE occurrence positions in same MSC moves.The position that Fig. 5 E provides for the embodiment of the invention seven is the schematic diagram of new technological process Position Updating more.Shown in Fig. 5 E, the 2G network site of UE from the 2G1 location area updating to the 2G2 lane place, the 2G network site of UE from the 3G1 location area updating to the 3G2 lane place; Wherein 2G1 and 2G2 belong to same MSC, and 3G1 and 3G2 belong to same MSC.In the present embodiment, the MSC that MSC that the 2G network site belongs to and 3G network position belong to can be same, can not be same also, and shown in Fig. 5 E is the situation that 2G and 3G network position belong to same MSC.In the present embodiment, UE initiates the renewal of 2G network site respectively and the 3G network position is upgraded, and MSC judges that the position more belongs to the renewal of intra-office position in new capital, and then MSC upgrades two positional information records that are kept among the VLR, and does not need to notify HLR.At last, the customer position information of preserving in MCS is " a user A:2G network: 2G2 and 3G network: 3G2 ".

By the new technological process more of the position among the embodiment shown in Fig. 5 A-Fig. 5 E, UE can reside in 2G network and the 3G network simultaneously in the CS territory.

Upgrade embodiment by above-mentioned position, can realize terminal CS territory two resident at two nets, the handling process in the time of will specifically introducing network side below and carry out voice and short message service.

Embodiment eight

In the embodiment of the invention, when network side is received user's call request (speech business), preferentially select the 2G network to carry out CS territory Business Processing according to the terminal positional information of preserving (being kept at respectively among MSC and the HLR).

The flow chart of the network side processed voice called service that Fig. 6 provides for the embodiment of the invention eight, as shown in Figure 6, this flow process comprises:

Step 601, HLR receive the route requests of caller MSC according to calling subscriber's voice request transmission, to the MSC (hereinafter to be referred as 2G MSC) of the resident 2G network correspondence of called UE request route information; Wherein, the above-mentioned caller MSC MSC that is calling subscriber's correspondence.

Step 602, HLR obtain the routing iinformation of called UE correspondence from 2G MSC, and the routing iinformation that obtains is sent to caller MSC, make caller MSC preferentially to communicate by the 2G network.

Wherein, 2G and 3G core net can separately be disposed, and also can unify deployment; Below by the specific embodiment shown in Fig. 7 A-Fig. 7 C speech business flow process shown in Figure 6 is described in detail.

Embodiment nine

The flow chart of the speech called flow process that Fig. 7 A provides for the embodiment of the invention nine, the application scenarios of present embodiment is: 2G and 3G core net are separately disposed.In the present embodiment, because 2G and 3G core net are separately disposed, then 2G is different with the MSC of 3G network correspondence; So select to use the 2G network by HLR, after HLR gets access to the MSC2 of 2G correspondence, directly from MSC2, just can get access to the routing iinformation of UE, this routing iinformation is the routing iinformation of 2G; HLR sends to caller MSC with this routing iinformation; HLR sends to caller MSC with the routing iinformation that gets access to, and caller MSC is routed to MSC2 according to this routing iinformation then, and the MSC2 distributing paging makes speech business pass through the 2G network carrying.Concrete, shown in Fig. 7 A, this flow process can comprise:

Step 701A, caller MSC receive the calling request, to the HLR request route information.

When the calling subscriber wants to carry out talk business with the called subscriber, send request to caller MSC earlier, after caller MSC receives request, to the HLR request route information.

Step 702A, HLR inquiring user positional information (primary importance information), the 2G network of supposing the called subscriber is corresponding to MSC2,3G network is corresponding to MSC4, HLR is according to the professional network selection strategy of configuration, preferentially obtain routing iinformation to 2G MSC (MSC2), the routing iinformation here represents that with roaming number therefore, obtaining routing iinformation to MSC2 provides called subscriber's roaming number to realize by request MSC2.

The prerequisite that above-mentioned HLR preferentially obtains routing iinformation to 2G MSC is to preserve positional information corresponding to the 2G network among the HLR in the customer position information (as user A:2G network: MSC2); If when not having, then obtain routing iinformation to 3G MSC, prerequisite is the positional information of preserving in the customer position information among the HLR corresponding to 3G network.

Step 703A, MSC2 inquire about called subscriber's positional information, and the roaming number of called subscriber's correspondence is returned this HLR.

Because 2G and 3G core net are separately disposed, so called subscriber's positional information (second place information) has only one among the MSC2.

Step 704A, HLR return to caller MSC with called subscriber's routing iinformation.

After HLR received called subscriber's roaming number, the routing iinformation that this roaming number is represented sent to caller MSC.

Step 705A, caller MSC carry out call proceeding according to this routing iinformation distributing paging.

Caller MSC is routed to MSC2 according to this routing iinformation, the MSC2 distributing paging.

In the present embodiment, if by 2G MSC paging failure, then can be when judging terminal and possess the ability of simultaneously resident two nets, again obtain the 3G routing iinformation to HLR, it is similar to the flow process that HLR obtains the 2G routing iinformation that HLR obtains the flow process of 3G routing iinformation, but need identify network type, HLR sends to the 3G routing iinformation that obtains the MSC of 2G then, MSC by 2G is called to 3G MSC according to the 3G routing iinformation, 3G MSC calling called subscriber from 3G network, and in 3G network, set up and call out.

In addition, if HLR is to 3G MSC inquiry routing iinformation in step 702A, then follow-up 3GMSC processing mode and above-mentioned 2G MSC processing mode are similar, are not described in detail in this, and last caller MSC is by 3G MSC distributing paging.

Embodiment ten

The flow chart of the speech called flow process that Fig. 7 B provides for the embodiment of the invention ten, the application scenarios of present embodiment is: 2G and the unification of 3G core net are disposed, and select to use the 2G network by MSC, promptly at MSC configuration network selection strategy; In the present embodiment, HLR sends the roaming number request that provides to MSC2, MSC2 returns roaming number information and gives HLR, HLR sends to caller MSC with the routing iinformation of this roaming number information correspondence, caller MSC is routed to MSC2 according to this routing iinformation with audio call then, and MSC2 selects 2G network distributing paging again; Concrete, shown in Fig. 7 B, this flow process can comprise:

Step 701B, caller MSC receive the calling request, to the HLR request route information.

Step 702B, HLR inquiring user positional information, all corresponding same MSC in called subscriber's 2G position and 3G position (for example MSC1), HLR sends the roaming number request that provides to MSC1.

Step 703B, MSC1 distributing user roaming number also return to HLR.

Step 704B, HLR return to caller MSC with called subscriber's routing iinformation (representing with roaming number).

Step 705B, caller MSC are routed to corresponding MSC1 according to this routing iinformation, carry out call proceeding.

Step 706B, MSC1 according to the configuration the network selection strategy at the 2G network to the UE distributing paging.

Same, in the present embodiment,, then can after judging that terminal possesses the ability of simultaneously resident two nets, obtain the 3G routing iinformation to HLR again, and in 3G network, set up and call out if by 2G routing iinformation paging failure.

Embodiment 11

The flow chart of the speech called flow process that Fig. 7 C provides for the embodiment of the invention 11, the application scenarios of present embodiment is: 2G and the unification of 3G core net are disposed, and select to use the 2G network by HLR, promptly at HLR configuration network selection strategy; In the present embodiment, MSC needs and can distribute 2G or 3G roaming number according to network identity, and is identified at corresponding network identity distributing paging according to the heterogeneous networks of roaming number; HLR to MSC2 send carry the 2G network identity the roaming number request is provided, MSC2 just returns the roaming number information that is used for the 2G network of UE correspondence to HLR then, HLR sends to caller MSC with the routing iinformation of this roaming number information correspondence; Caller MSC is routed to MSC2 according to this routing iinformation then, and MSC2 makes speech business pass through the 2G network carrying according to 2G roaming number distributing paging; Concrete, shown in Fig. 7 C, this flow process comprises:

Step 701C, caller MSC receive the calling request, to the HLR request route information.

Step 702C, HLR inquiring user positional information, the all corresponding same MSC in called subscriber's 2G position and 3G position (for example MSC1), HLR is according to the professional network selection strategy of configuration, preferentially to MSC1 send carry the 2G network identity the roaming number request is provided, wherein, the 2G network identity that carries is used to notify MSC1 to return the 2G roaming number.When returning the 3G roaming number if desired, then carry the 3G network sign.

The 2G sign that step 703C, MSC1 send according to HLR the roaming number request is provided, distribute the 2G roaming number, return to HLR.

Step 704C, HLR return to caller MSC with the 2G routing iinformation of called subscriber's 2G roaming number correspondence.

Step 705C, caller MSC send to call out to the MSC1 that returns routing iinformation and connect, and make MSC1 make a call to described terminal according to positional information and the routing iinformation preserved.

Here routing iinformation is represented with roaming number, and the roaming number that MSC1 returns specifically can be divided into 2G roaming number and 3G roaming number again.The routing iinformation that MSC1 can represent by 2G roaming number or 3G roaming number and the positional information (second place information) of preservation select 2G network or 3G network to carry out speech business.

Same, in the present embodiment,, then can after judge that terminal possesses the ability of simultaneously resident two nets, in 3G network, set up and call out if by 2G routing iinformation paging failure.

Embodiment 12

The flow chart of the reception short message service that Fig. 8 provides for the embodiment of the invention 12, as shown in Figure 8, the flow process of this reception short message service comprises:

Step 801, HLR receive the route requests of SMC according to calling subscriber's short message request transmission, and the MSC2 that is used for the 2G network of inquiry UE correspondence.SMC is the SMC of the request of sending SMS message to the called subscriber.

Operation flow when present embodiment is UE reception short message, and UE resides in 2G and the 3G network simultaneously in the CS territory.For short message service, network side preferentially selects the 2G network to communicate according to the network selection strategy of configuration.

The calling subscriber sends SMS message, and SMC sends to HLR according to this short message request and gets the short message route requests, and this gets the user ID of carrying in the short message route requests as called UE; HLR receives after this gets the short message route requests, inquires about the MSC that is used for the 2G network (being above-mentioned MSC2) of this UE correspondence.

Shown in earlier figures 4A and Fig. 4 B, 2G CS domain core net and 3G CS domain core net can separately be disposed, and also can unify deployment.When 2G CS domain core net and 3G CS domain core net were separately disposed, the MSC that is used for the 2G network was different with the MSC that is used for 3G network; When 2G CS domain core net and 3G CS domain core net unification deployment, the MSC that is used for 2G network and 3G network is same.

Step 802, HLR send to SMC with the sign of MSC2, to communicate by the 2G network.

After HLR inquires this MSC2, the sign of MSC2 is sent to SMC.

Below by Fig. 9 A-Fig. 9 C reception short message service flow process shown in Figure 8 is described in detail.

Embodiment 13

The flow chart of the reception short message service flow process that Fig. 9 A provides for the embodiment of the invention 13, the application scenarios of present embodiment is: 2G and 3G core net are separately disposed, and then 2G is different with the MSC of 3G network correspondence; So selected to use the 2G network by HLR, after HLR got access to the MSC2 of 2G correspondence, directly the sign with this MSC2 sent to SMC, SMC just can be by short-message sending under the MSC2 then; Concrete, shown in Fig. 9 A, this flow process comprises:

After step 901A, SMC received the short message of calling subscriber's transmission, SMC was to the HLR request route of called subscriber's ownership.

Step 902A, HLR inquiring user positional information, the corresponding MSC2 in called subscriber's 2G position, the corresponding MSC4 in 3G position, HLR preferentially selects the MSC2 of 2G correspondence according to the professional network selection strategy of configuration, and the sign of MSC2 is returned to SMC.

Step 903A, SMC send SMS message to MSC2.

UE supports to receive short message from 2G network or 3G network.

Embodiment 14

The flow chart of the reception short message service flow process that Fig. 9 B provides for the embodiment of the invention 14, the unification of 2G and 3G core net is disposed in the present embodiment, and selects to use the 2G network by MSC, promptly at MSC configuration network selection strategy; In the present embodiment, HLR returns the sign of MSC2 to SMC, and SMC is short-message sending under MSC2, and MSC2 receives behind the short message according to the network selection strategy of configuration, selects the 2G network to issue this short message; Concrete, shown in Fig. 9 B, this flow process comprises:

After step 901B, SMC received the short message of calling subscriber's transmission, SMC was to the HLR request route of called subscriber's ownership.

Step 902B, HLR inquiring user positional information, all corresponding same MSC in called subscriber's 2G position and 3G position (for example MSC1), HLR sends to SMC with the sign of MSC1.

Step 903B, SMC send SMS message to MSC1, after MSC1 receives short message, and the inquiring user positional information, this user exists 2G positional information and 3G positional information simultaneously, and MSC1 is according to the professional network selection strategy of configuration, preferentially short-message sending under the 2G network.

UE supports to receive short message from 2G network or 3G network.

Embodiment 15

The flow chart of the reception short message service flow process that Fig. 9 C provides for the embodiment of the invention 15, the unification of 2G and 3G core net is disposed in the present embodiment, and selects to use the 2G network by HLR, promptly at HLR configuration network selection strategy; In the present embodiment, when HLR returns the sign of MSC2 to SMC, also send the 2G network identity to SMC, make SMC can carry the 2G network identity during short-message sending under MSC2, MSC2 selects to use short-message sending under the 2G network according to this 2G network identity then; Concrete, shown in Fig. 9 C, this flow process comprises:

After step 901C, SMC received the short message of calling subscriber's transmission, SMC was to the HLR request route of called subscriber's ownership.

Step 902C, HLR inquiring user positional information, all corresponding same MSC in called subscriber's 2G position and 3G position (for example MSC1), HLR send to SMC according to the professional network selection strategy of configuration with sign and the 2G network identity of MSC1.

Step 903C, SMC send the short message that carries the 2G network identity to MSC1.

After step 904C, MSC1 received this short message, according to carrying the 2G network identity in the message, inquiring user was in the positional information of 2G network, short-message sending under the 2G network.

Embodiment 16

Based on the foregoing description, the embodiment of the invention provides a kind of terminal, the schematic diagram of the terminal that Figure 10 provides for the embodiment of the invention 16; As shown in figure 10, this terminal is single SIM card terminal, contains user ID in the SIM card, and this terminal specifically comprises:

2G processing module 1001, be used for sending the 2G network site update request of carrying described user ID to network side, after making that described network side is received described 2G network site update request, finish more new technological process of position, circuit switching (CS) territory with described terminal, thereby make the CS territory of described terminal reside in the 2G network;

3G processing module 1002, be used for sending the 3G network position updating request of carrying described user ID to network side, after making that described network side is received described 3G network position updating request, finish more new technological process of position, circuit switching (CS) territory with described terminal, thereby make the CS territory of described terminal reside in 3G network;

Select module 1003, be used for when initiating CS territory service request, preferentially select described 2G network to carry out described CS territory business, when described 2G network does not satisfy described CS territory business need, select described 3G network to carry out described CS territory business by described 3G processing module by described 2G processing module.

Above-mentioned 2G processing module is mainly used to handle with the relevant business of 2G network, and the 3G processing module is mainly used to handle with the relevant business of 3G network, and two modules are module relatively independent on the function, each self-operating 2G protocol stack and 3G protocol stack.When realizing with hardware, two modules can realize (two independently functional modules are arranged, for example based on two processing modules on the hardware, seal into a process chip) with same process chip, perhaps realize with a hardware handles chip respectively.

The workflow of each module and operation principle can not repeat them here referring to the specific descriptions among above-mentioned each method embodiment in the present embodiment.

The embodiment of the invention, UE resides in 2G network and 3G network simultaneously, and communicate for the professional preferential 2G network of selecting in CS territory, because the covering of 2G network is generally good than 3G network, therefore, preferential selection 2G network can improve the communication quality based on the CS territory business of speech business, has avoided the frequent gravity treatment between 2G network and the 3G network, has improved communication quality; And when the 2G network signal does not meet the demands, can also use 3G network as backup, when selecting 3G network to carry out CS territory business, UE has resided in 3G network, therefore, does not need to initiate more new technological process of position, can not increase the connection time delay.

Embodiment 17

The structural representation of the MSC that Figure 11 provides for the embodiment of the invention 17, as shown in figure 11, described MSC is for being used for the 2G/3G MSC of 2G network and 3G network simultaneously, and described MSC comprises: receiver module 1101, sending module 1103, route are returned module 1105 and are called out and select module 1107;

Receiver module 1101 is used for 2G network site update request and the 3G network position updating request that receiving terminal sends; Terminal is single SIM card, contains user ID in the SIM card, and 2G network site update request carries identical user ID with the 3G network position updating request; And the circuit switching (CS) territory of terminal is resident to 2G network and 3G network, and preserve the positional information of resident 2G network and the positional information of 3G network;

Sending module 1103 is used for sending the first network site update request and the second network site update request to HLR, the first network site update request carries described user ID, 2G network identity and 2G/3G MSC sign, and the second network site update request carries user ID, 3G network sign and 2G/3G MSC sign;

Receiver module 1101 also is used for, receive HLR and receive the insertion user data notice that sends after the first network site update request and the second network site update request, place network of network type when carried terminal sends position updating request in this notice, second place information is preserved in notified back, and described second place information comprises the location area information of place network when described network type and terminal send position updating request;

Receiver module 1101 also is used for, receive the request of obtaining routing iinformation that HLR sends, wherein, HLR is the request of obtaining routing iinformation that sends when receiving the request of caller MSC inquiry routing iinformation, caller MSC is when the CS territory service request that receives that the calling subscriber sends, and sends the request of inquiry routing iinformation to HLR;

Route is returned module 1105 and is used for request according to HLR, returns routing iinformation to HLR, so that HLR returns the routing iinformation of terminal to caller MSC;

Call out and select module 1107 to be used to receive the calling connection that caller MSC sends according to routing iinformation, and make a call to terminal by the 2G network according to the second place information priority of preserving, when the 2G network does not satisfy CS territory business need, make a call to terminal by 3G according to the second place information of preserving.

The workflow of each module and operation principle do not repeat them here referring to the specific descriptions among above-mentioned each method embodiment in the present embodiment.When particular hardware realizes, can realize based on the hardware structure of existing MSC, for example, can be in chip more fresh code realize corresponding functional modules.

The MSC that the embodiment of the invention provides, can make UE reside in 2G network and 3G network simultaneously with UE and other network equipments, and communicate for the professional preferential 2G network of selecting in CS territory, avoid the frequent gravity treatment between 2G network and the 3G network, improved communication quality; And when the 2G network signal does not meet the demands, can also use 3G network as backup.

Embodiment 18

The structural representation of the HLR that Figure 12 provides for the embodiment of the invention 18, as shown in figure 12, described HLR comprises: the position is upgraded receiver module 1201, is preserved module 1203 and route acquisition module 1205.

The position is upgraded receiver module 1201 and is used to receive the first network site update request and the second network site update request that 2G moving exchanging center MSC and 3G MSC send respectively, the described first network site update request carries user ID, 2G network identity and 2G MSC sign, and the described second network site update request carries user ID, 3G network sign and 3G MSC sign.

Wherein, the type of place network when the terminal that described 2G network identity and described 3G network sign is used to identify described user ID correspondence sends position updating request, described 2G MSC sign and described 3GMSC identify the MSC that is used to identify the receiving position update request.

Preserve module 1203 and be used for preserving primary importance information according to described first network site update request that receives and the described second network site update request, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request; And notify described 2G MSC and described 3G MSC to insert user data, and make the notified back of described 2G MSC and described 3G MSC preserve second place information, described second place information comprises the location area information of place network when terminal sends position updating request; If there are other MSC to preserve the second place information of haveing been friends in the past, then notify these other MSC deletions old second place information.Primary importance information in the various embodiments of the present invention can comprise the sign of a terminal use at the MSC of 2G network and 3G network difference correspondence simultaneously.

Route acquisition module 1205 is used to receive the request of the routing iinformation of the described terminal of inquiry that caller MSC sends, and obtains the routing iinformation that is used for the 2G network according to the described primary importance information of preserving to described 2G MSC; When not existing in the described primary importance information when not satisfying described CS territory business need, obtain the routing iinformation that is used for 3G network to 3G MSC corresponding to the positional information of 2G network or 2G network; Caller MSC is when the CS territory service request that receives that the calling subscriber sends, and sends the request of inquiry routing iinformation to described HLR.

Route acquisition module 1205 also is used for, and returns the routing iinformation of described terminal to described caller MSC.

Wherein, among the HLR that provides in the present embodiment, preserve the sign of terminal simultaneously, make HLR can preferably select the 2G network to carry out CS territory business at the MSC of the sign of the MSC of 2G network correspondence and 3G network correspondence.

2G MSC in the present embodiment and 3G MSC can be physical NEs (MSC), also can be a plurality of physical NEs.For example, 2G MSC and 3G MSC are finished by two physics MSC respectively, and perhaps 2G MSC and 3G MSC are finished by a physics MSC, remember that this physics MSC is 2G/3G MSC.In like manner, caller MSC also can use same physics MSC with 2G MSC or 3G MSC or 2G/3G MSC.

Need to prove, when 2G MSC and 3G MSC by a physics MSC (2G/3G MSC) when finishing, when the CS territory service request that receives that caller MSC sends, the route acquisition module 1205 among the HLR can preferentially be obtained the routing iinformation that is used for the 2G network to 2G/3G MSC; Perhaps, route acquisition module 1205 can be replaced by another route acquisition modules A, this route acquisition modules A is when 2G/3G MSC obtains routing iinformation, not limiting is the routing iinformation that is used for the 2G network, and just the routing iinformation of 2G/3G MSC correspondence is sent to caller MSC, when caller MSC calls out 2G/3GMSC, issue CS territory business by the 2G network by preferential selection of 2G/3G MSC.

The workflow of each module and operation principle do not repeat them here referring to the specific descriptions among above-mentioned each method embodiment in the present embodiment.

The HLR that the embodiment of the invention provides, can make UE reside in 2G network and 3G network simultaneously with UE and other network equipments, and communicate for the professional preferential 2G network of selecting in CS territory, avoid the frequent gravity treatment between 2G network and the 3G network, improved communication quality; And when the 2G network signal does not meet the demands, can also use 3G network as backup.

Embodiment 19

The embodiment of the invention provides a kind of communication system, comprising:

Described HLR is used for, preserve primary importance information according to described first network site update request that receives and the described second network site update request, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request; And notify described 2G MSC and described 3G MSC to insert user data, carry described network type during notice, make the notified back of described 2G MSC and described 3G MSC preserve second place information, described second place information comprises the location area information of place network when described network type and terminal send position updating request; If there are other MSC to preserve the second place information of haveing been friends in the past, then notify other MSC deletion old second place information;

Described HLR also is used for, and obtains routing iinformation according to the described primary importance information priority of preserving to described 2G MSC; When the positional information that do not exist in the described primary importance information corresponding to the 2G network, obtain routing iinformation to 3G MSC;

Embodiment 20

Embodiment 21

The concrete beneficial effect mutual and this communication system of each network element also can be not described in detail in this referring to the explanation among the method embodiment in the communication system among above-mentioned three embodiment.

It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. the method for simultaneously resident two nets in single deck tape-recorder double-standby terminal circuit switching (CS) territory is characterized in that, is applied to single Subscriber Identity Module SIM card terminal, contains user ID in the described SIM card, and described method comprises:

When initiating CS territory business, preferentially select described 2G network to carry out described CS territory business, when described 2G network does not satisfy described CS territory business need, select described 3G network to carry out described CS territory business.

2. the method for simultaneously resident two nets in single deck tape-recorder double-standby terminal circuit switching (CS) territory is characterized in that, is applied to network side, comprising:

3. method according to claim 2 is characterized in that:

The positional information of described 2G network and the positional information of described 3G network comprise primary importance information and second place information;

Described second place information comprises described network type and the location area information that is stored in the moving exchanging center MSC, wherein, and the lane place when described location area information is terminal transmission position updating request in the network of place.

4. method according to claim 2 is characterized in that, also comprises:

When move described terminal generation network site, receive the network site update request that carries described user ID that described terminal sends, finish more new technological process of position, CS territory with described terminal, thereby make the resident network after upgrade in the CS territory of described terminal; Upgrade the positional information of the 2G network of preserving and/or the positional information of 3G network simultaneously;

When the CS territory service request that receives that the calling subscriber sends, select the network after the described renewal to carry out described CS territory business according to the positional information of the positional information of the 2G network after the renewal of preserving and/or 3G network.

5. a communication system is characterized in that, comprising:

Described HLR is used for, preserve primary importance information according to described first network site update request that receives and the described second network site update request, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request; And notify described 2G MSC and described 3G MSC to insert user data, make the notified back of described 2G MSC and described 3G MSC preserve second place information, described second place information comprises the location area information of place network when terminal sends position updating request; If there are other MSC to preserve the second place information of haveing been friends in the past, then notify other MSC deletions old second place information;

6. a communication system is characterized in that, comprising:

7. a communication system is characterized in that, comprising:

8. a terminal is characterized in that, described terminal is single Subscriber Identity Module SIM card terminal, contains user ID in the described SIM card, and described terminal comprises:

9. a moving exchanging center MSC is characterized in that, described MSC is for being used for the 2G/3G MSC of 2G network and 3G network simultaneously, and described MSC comprises: receiver module, sending module, route are returned module and are called out and select module;

Described receiver module is used for, 2G network site update request and 3G network position updating request that receiving terminal sends; Terminal is single Subscriber Identity Module SIM card, contains user ID in the SIM card, and 2G network site update request carries identical user ID with the 3G network position updating request; And the circuit switching (CS) territory of terminal is resident to 2G network and 3G network, and preserve the positional information of resident 2G network and the positional information of 3G network;

Described sending module is used for, send the first network site update request and the second network site update request to Home Location Register HLR, the described first network site update request carries described user ID, 2G network identity and 2G/3G MSC sign, and the described second network site update request carries user ID, 3G network sign and 2G/3G MSC sign;

By sending described first network site update request and the described second network site update request, make HLR upgrade the primary importance information of preserving according to the described first network site update request that receives and described second network site, described primary importance information comprises the sign of the MSC of place network of network type and receiving position update request when described terminal sends position updating request;

Described receiver module also is used for, receive HLR and receive the insertion user data notice that sends after the first network site update request and the second network site update request, place network of network type when carried terminal sends position updating request in the described insertion user data notice, second place information is preserved in notified back, and described second place information comprises the location area information of place network when described network type and terminal send position updating request;

Call out and select module to be used for, receiving caller MSC connects according to the calling that routing iinformation sends, and make a call to terminal by the 2G network according to the second place information priority of preserving, when not existing 2G network location information or described 2G network not to satisfy CS territory business need in the described second place information, make a call to terminal by 3G according to the second place information of preserving.

10. a Home Location Register HLR is characterized in that, comprising: the position is upgraded receiver module, is preserved module and route acquisition module;