CN100562174C - TDCDMA is to the method for follow-up switching between other network under the HLR amalgamation mode - Google Patents
TDCDMA is to the method for follow-up switching between other network under the HLR amalgamation mode Download PDFInfo
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- CN100562174C CN100562174C CNB2007101302600A CN200710130260A CN100562174C CN 100562174 C CN100562174 C CN 100562174C CN B2007101302600 A CNB2007101302600 A CN B2007101302600A CN 200710130260 A CN200710130260 A CN 200710130260A CN 100562174 C CN100562174 C CN 100562174C
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Abstract
TDCDMA is to the method for follow-up switching between other network under a kind of HLR amalgamation mode, double-module double-standby terminal is set up the TDCDMA net and is called out, and switch to TDMSC B from TDMSC A, RNC judges that this terminal need switch to network A under the TDMSC B, sending out message informing TDMSC B switches, TDMSC B sends out message informing TDMSC A again and switches, and all identifies the switching that this switches to the GSM network; TDMSC A obtains the roaming number of terminal in network A to the HLR inquiry, uses this number to be initiated to the calling of network A by called number and be designated the network A switching to be made a call; Behind the call setup, terminal is called out internal channel and is switched in the network A calling from TDCDMA; After TDMSC A received that network A is replied, connection network A called out the opposite end of part and the original place calling of described terminal, and described terminal continues current calling in network A.The invention enables terminal to switch under the situation of back signal attenuation, can switch to other network and continue current calling at the TDCDMA network.
Description
Technical field
The present invention relates to the method that terminal inserts in the communication field, relate in particular to TDCDMA to the method for switching between other network.
Background technology
TDCDMA is as the third generation mobile technology, and at the initial stage of networking, with ripe GSM network and deposit, the TDCDMA network coverage tends to show as the isolated island in the GSM network with a large amount of.Therefore, realize the switching of TDCDMA, to one of key factor of the service quality of raising system to gsm system.
According to the agreement regulation, dual-mode handset should have the different system cell signal quality of measurement and finish the ability of switching between system by reorientation standard agreement process between system.But, a kind of TDCDMA that exists and GSM dual-mode and dual-idle mobile phone can not accomplish to detect the signal quality of neighboring GSM cell when using TDCDMA (TD-CDMA Time Division-Code Division Multiple Access access) system at present, can not finish between system by repositioning process between the system of agreement regulation to switch.And this type of mobile phone is incited somebody to action long-term existence afterwards as a kind of special dual-mode and dual-idle mobile phone.
Like this, this kind double-module double-standby terminal can't automatically switch to the GSM network after moving to the zone that does not have the TDCDMA network coverage, uses the GSM resource to proceed conversation.Except that GSM net, the TDCDMA network to other network such as CDMA, WCDMA between also have similar problem.
Summary of the invention
The technical problem to be solved in the present invention provides the method to follow-up switching between other network of TDCDMA under a kind of HLR amalgamation mode, make double-module double-standby terminal after finishing the switching of TDCDMA network, under the situation of signal attenuation, can switch to other network and continue current calling.
In order to solve the problems of the technologies described above, the invention provides the method for TDCDMA under a kind of HLR amalgamation mode to follow-up switching between other network, may further comprise the steps:
(a) double-mode double-standby mobile terminal of TDCDMA and another network A is set up the calling of TDCDMA net, and switch to TDMSC B from the time-division TDMSC of mobile switching centre A, radio network controller (RNC) under the TDMSC B judges that this portable terminal need switch to network A, then send out the described TDMSC B of message informing and switch, in message, identify this and switch to the switching of network A;
(b) described TDMSC B sends out the described TDMSC A switching of message informing, also identifies the switching that this switches to described network A in the message, and described TDMSC A obtains the roaming number of this portable terminal in network A to the HLR inquiry;
(c) described TDMSC A uses the roaming number of described network A to be called number, is initiated to the calling of network A, and identifies this calling for switch the calling of being initiated to network A;
(d) described portable terminal is discerned this calling for switching the calling initiated to network A, and behind the call setup between network A, the internal channel of this terminal is called out from TDCDMA switch in the network A calling;
(e) network A is returned call answering to described TDMSC A, this TDMSC behind call setup
After A received that this replys, connection network A called out the opposite end of part and the original place calling of described portable terminal, and described portable terminal continues current calling in network A.
Further, said method also can have following characteristics:
RNC analyzes the examining report of portable terminal at the TDCDMA network in the step (a), if the signal level of terminal in all sub-districts of TDCDMA all is lower than certain set point, thinks that then terminal need switch to network A.
Further, said method also can have following characteristics:
The described portable terminal of step (a) is in the process of setting up the calling of TDCDMA net and in the handoff procedure, and this terminal of RNC that notice is connected has the network A of responding and switches the calling of being initiated, and finishes the ability of switching from TDCDMA to the network A;
After RNC under the described TDMSC B judges that described portable terminal need switch to network A, judge again whether this terminal has described switching capability, as have, send RELOCATION REQUEST message again and notify described TDMSC A to switch, step (b) TDMSC B sends the follow-up handoff request message informing TDMSC A of preparation again and switches.
Further, said method also can have following characteristics: the described TDMSC A of step (b) further can be divided into following steps to the process that HLR inquires about described roaming number:
(b1) described TDMSC A sends the routing iinformation request to HLR, and number wherein is the TDCDMA network number of terminal, and indicates the route requests that this time switched for network;
(b2) described HLR carries out the route processing, according to the record of the SIM card that this terminal is used of preserving in the network A registration, determines this terminal at the VLR that network A inserted, and sends the message that Provides Roaming Number to this VLR;
(b3) described VLR is returned as the network A roaming number of described terminal distribution to described HLR;
(b4) described HLR turns back to described TDMSC A with this roaming number.
Further, said method also can have following characteristics:
Being that the NPI field of checking numbers is expanded in the step (b1), is the route requests that network switches to indicate this time.
Further, said method also can have following characteristics:
In the step (c), be calling number by described calling to be set to operator be this type of special service number that switches regulation, identify the calling of this callings for being initiated to the network A switching;
In the step (d), described portable terminal is discerned this calling for switch the calling of being initiated to network A according to this calling number.
Further, said method also can have following characteristics: the call establishment of described portable terminal of step (d) and described network A may further comprise the steps:
(d1) after network A is received described calling, be initiated to the paging of described portable terminal, the network A of this portable terminal is partly returned page response;
(d2) network A sends call setup message to described portable terminal, carries described calling number in the message;
(d3) after the described portable terminal calling number that identifies this calling is described special service number, insert this calling automatically, return ALERTING message, network A sends Address Complete Message to TDMSC A;
(d4) described portable terminal returns connection message automatically and gives network A.
Further, said method also can have following characteristics:
Behind the described TDMSC A of step (e) replay call, also discharge of the connection of described portable terminal, and discharge the connection and TDMSC A being connected to TDMSC B of TDMSC B to RNC at the TDCDMA network.
Further, said method also can have following characteristics:
Described network A is GSM network, cdma network or WCDMA network.
Further, said method also can have following characteristics:
Described mobile terminal user is in described network A contracted CLIP service and the signatory slow forward-shifting service and the affair of being transferred to civilian work in the early time, in the TDCDMA net caller number restriction business of contracting.
The present invention proposes the method for TDCDMA to follow-up switching between other network, user signatory in merging HLR is finished after the switching of TDCDMA network, under the situation of network signal decay, can switch to other network such as GSM net and continue current calling, improve the service quality of network.Further, this method does not need TDCDMA and other network exchange wireless messages, and what other network was finished is normal call function, so do not need other network to upgrade, is convenient to dispose and implement.This method can use specific calling number sign to switch, and portable terminal is according to number switching channels automatically, and the user can not perceive the carrying out of switching.
Description of drawings
Figure 1A and Figure 1B are respectively that the present invention uses and merges HLR, realize that TDCDMA switches system construction drawing with follow-up switching substantially to GSM.
Fig. 2 is that the present invention uses fusion HLR, realizes the system flow chart that TDCDMA switches substantially to GSM.
Fig. 3 is that the present invention uses fusion HLR, realizes the system flow chart of TDCDMA to the follow-up switching of GSM.
Fig. 4 is that the present invention uses fusion HLR, realizes the system flow chart of TDCDMA to the GSM basic handover cancelling.
Fig. 5 is that the present invention uses fusion HLR, realizes the system flow chart of TDCDMA to the follow-up handover cancelling of GSM.
Embodiment
With the switch to example of TDCDMA to the GSM net, the enforcement to technical scheme is described in further detail in conjunction with the accompanying drawings below.
Figure 1A shows under the HLR amalgamation mode, realizes that TDCDMA to the system configuration that GSM switches substantially, comprises portable terminal, TDCDMA network and GSM network.Wherein:
Comprise in the TDCDMA network:
Radio network controller (RNC) 12 is used to manage the wireless connections of TDCDMA network, and portable terminal TD part inserts under RNC;
TDMSC (time-division mobile switching centre) 13 links to each other with GSM network gateway exchange with RNC, HLR, is used for realizing calling out and switching control function; And
Homing user position register (HLR), link to each other with the GSM net with TD-MSC, be applied to TDCDMA and GSM network simultaneously, deposit the CAMEL-Subscription-Information of mode mobile terminal TDCDMA network identity card and the CAMEL-Subscription-Information of portable terminal GSM network identity card, comprise the GSM number.Store the record of SIM card that terminal is used among the HLR simultaneously, and be associated with VLR (VLR Visitor Location Register) number at SIM card place at the GSM network registry.
Figure 1B shows under the HLR amalgamation mode, realizes the system configuration of TDCDMA to the follow-up switching of GSM.Wherein show the TDMSC A that terminal is inserted before switching and switch the TDMSC B that the back is inserted.
Fig. 2 is the flow chart that present embodiment TDCDMA switches substantially to GSM.Under the initial state of switching, portable terminal (also abbreviating terminal as) inserts under TDCDMA exchange TDMSC, and through switching, terminal inserts under GSM exchange, and continues current calling.Concrete steps are as follows:
Portable terminal can be described terminal and support switching mode described herein in physical capability.Certainly RNC and terminal also can exchange this information by other process.
Switching capability as described in not having as terminal, then RNC does not send re-positioning request to TDMSC.
Step 204, this HLR carries out route to be handled, and according to the record of the SIM card that this terminal is used of preserving at the GSM network registry, determines the VLR that this terminal is inserted at the GSM net, sends the message that Provides Roaming Number to this VLR (in the GSM net, figure is slightly);
Step 208 after the GSM network is received described calling, is initiated to the paging of portable terminal, and the GSM network portion of portable terminal is returned page response;
After the calling number that step 210, portable terminal identify this calling is described special service number, inserts automatically and call out, return ALERTING message, the GMS network sends Address Complete Message to TDMSC;
Before the switching, portable terminal is connected the TD voice-over-net signal of decoding with the terminal microphone.After the switching, terminal transfers the voice signal of playing the GSM network to.
TDMSC is before receiving the replying of GSM network, and the GSM network that do not continue prevents that to the speech channel of local terminal the ring back tone of GSM network from disturbing conversation.
Step 213, TDMSC initiatively discharges the connection of terminal at the TDCDMA network;
After switching was finished, originally the connection to terminal also can be initiated to discharge by RNC in the TDCDMA network.
Step 214, TDMSC is discharged into the interface of RNC.
The GSM network can carry out special charging to this calling according to the calling number of described calling.
Fig. 3 is the flow chart of TDCDMA of the present invention to the follow-up switching of GSM.At this moment portable terminal switches to TDMSC B from TDMSC A, calls out and continues, and still along with the decay of TDMSC B network signal, the user begins the follow-up switching to the GSM network.Concrete steps are as follows:
Step 301, portable terminal set up to be called out, and switches to TDMSC B from TDMSCA, set up in the calling procedure and handoff procedure in, this terminal of RNC that the portable terminal notice is connected has the calling that the switching of GSM net is initiated, the realization ability that net switches from TDCDMA to GSM of responding;
Step 302, in the process of proceeding to call out, the measurement report of the RNC analysing terminal under the TDMSC B, as find that terminal drops at the signal level of TDCDMA network and be lower than certain set point, think that terminal need switch to the GSM network, judge again whether this terminal has described switching capability, arrive TDMSC B if any then sending re-positioning request, and identify the switching that this switches to the GSM network;
After portable terminal switches to TDMSC B from TDMSC A, RNC---" TDMSC the B---" TDMSCA under the access path of portable terminal and opposite end is: portable terminal---" the TDMSC B---" opposite end.
Step 303, TDMSC B sends and prepares follow-up handoff request message to TDMSC A, and timer is set, and waits for that TDMSC A replys, and also need identify the switching that this switches to the GSM network in the message, represents as using the special objective region code;
Step 304, TDMSC A sends the routing iinformation request to HLR, and number wherein is the TD network number of terminal, and using the NPI field of number is 5, indicates the route requests that this time switched for network;
Step 305, this HLR carries out route to be handled, and according to the record of the SIM card that this terminal is used of preserving at the GSM network registry, determines that this terminal at the VLR that the GSM net is inserted, sends the message that Provides Roaming Number to this VLR;
Step 306, VLR is returned as the roaming number of the GSM network of terminal distribution to HLR;
Step 307, HLR returns this roaming number to TDMSC A in the routing iinformation response message;
Step 308, TDMSC A uses this roaming number to be called number, is initiated to the calling of GSM network, and wherein calling number is that operator is this type of special service number that switches regulation, such as 991234;
Step 309 after the GSM network is received described calling, is initiated to the paging of portable terminal, and the GSM network portion of portable terminal is returned page response
Step 310, GSM network send call setup message to portable terminal, wherein carry above-mentioned calling number;
After the calling number that step 311, portable terminal identify this calling is described special service number, inserts automatically and call out, return ALERTING message, the GMS network sends Address Complete Message to TDMSC A;
Step 312, portable terminal are returned connection message automatically and are given the GSM network, internal channel is switched to GSM from the TDCDMA calling call out up, after the GSM network is received connection message, send call answering message to TDMSC A;
Step 313, TDMSC A receives call answering message, the GSM that continues net is called out the opposite end of part and the original place calling of this terminal;
After switching to GSM net, the access path between portable terminal and the opposite end becomes: portable terminal---" GSM net---" TDMSC A---" opposite end.
Step 314, TDMSC A by and TDMSC B between interface, be discharged into the connection of described terminal;
Step 315, TDMSC A sends the end signaling and replys, and discharges the connection and TDMSC A being connected to TDMSC B of TDMSC B to RNC.
Fig. 4 is the flow chart of TDCDMA of the present invention to the GSM basic handover cancelling.In GSM net handoff procedure,, reside in the TDCDMA network because the recovery of portable terminal TDCDMA network signal is cancelled to the switching of GSM network.Concrete steps are as follows:
The process that the GSM network processes is called out can be with reference to the flow process among Fig. 2.It is the final step of handoff procedure that portable terminal switches internal channel, and after portable terminal switched internal channel, TDMSCA just received the response message of GSM network at once, and discharges RNC.Internal channel has not been switched to the situation that the GSM net is cancelled switching again so portable terminal can not occur.
Fig. 5 is the flow chart of TDCDMA of the present invention to the follow-up handover cancelling of GSM.Take place follow-uply after the switching of GSM, portable terminal resides in the network under the TDMSC B because the recovery of TDCDMA signal is cancelled to the switching of GSM network.Concrete steps are as follows:
As from the foregoing, the present invention has realized the handoff functionality of TDCDMA network to the GSM network under to the situation that existing gsm system is changed and influence is minimum.Make the portable terminal of double-module double-standby mode after roaming into outside the TDCDMA network, to continue to call out by the GSM network.
It should be noted that in addition that in other embodiments the said GSM network can be the mobile communication network of other types also, such as CDMA, WCDMA network etc.Can know that from principle of the present invention handling process in these embodiments is consistent with the foregoing description.
Claims (10)
1, TDCDMA may further comprise the steps to the method for follow-up switching between other network under a kind of HLR amalgamation mode:
(a) double-mode double-standby mobile terminal of TDCDMA and another network A is set up the calling of TDCDMA net, and switch to TDMSC B from the time-division TDMSC of mobile switching centre A, radio network controller (RNC) under the TDMSC B judges that this portable terminal need switch to network A, then send out the described TDMSC B of message informing and switch, in message, identify this and switch to the switching of network A;
(b) described TDMSC B sends out the described TDMSC A switching of message informing, also identifies the switching that this switches to described network A in the message, and described TDMSC A obtains the roaming number of this portable terminal in network A to the HLR inquiry;
(c) described TDMSC A uses the roaming number of described network A to be called number, is initiated to the calling of network A, and identifies this calling for switch the calling of being initiated to network A;
(d) described portable terminal is discerned this calling for switching the calling initiated to network A, and behind the call setup between network A, the internal channel of this terminal is called out from TDCDMA switch in the network A calling;
(e) network A is returned call answering to described TDMSC A behind call setup, and after this TDMSCA received that this replys, connection network A called out the opposite end of part and the original place calling of described portable terminal, and described portable terminal continues current calling in network A.
2, the method for claim 1 is characterized in that:
RNC analyzes the examining report of portable terminal at the TDCDMA network in the step (a), if the signal level of terminal in all sub-districts of TDCDMA all is lower than certain set point, thinks that then terminal need switch to network A.
3, the method for claim 1 is characterized in that:
The described portable terminal of step (a) is in the process of setting up the calling of TDCDMA net and in the handoff procedure, and this terminal of RNC that notice is connected has the network A of responding and switches the calling of being initiated, and finishes the ability of switching from TDCDMA to the network A;
After RNC under the described TDMSC B judges that described portable terminal need switch to network A, judge again whether this terminal has described switching capability, as have, send RELOCATION REQUEST message again and notify described TDMSC A to switch, step (b) TDMSC B sends the follow-up handoff request message informing TDMSC A of preparation again and switches.
4, the method for claim 1 is characterized in that: the described TDMSC A of step (b) further can be divided into following steps to the process that HLR inquires about described roaming number:
(b1) described TDMSC A sends the routing iinformation request to HLR, and number wherein is the TDCDMA network number of terminal, and indicates the route requests that this time switched for network;
(b2) described HLR carries out the route processing, according to the record of the SIM card that this terminal is used of preserving in the network A registration, determines this terminal at the VLR that network A inserted, and sends the message that Provides Roaming Number to this VLR;
(b3) described VLR is returned as the network A roaming number of described terminal distribution to described HLR;
(b4) described HLR turns back to described TDMSC A with this roaming number.
5, method as claimed in claim 4 is characterized in that:
Being that the NPI field of checking numbers is expanded in the step (b1), is the route requests that network switches to indicate this time.
6, the method for claim 1 is characterized in that:
In the step (c), be calling number by described calling to be set to operator be this type of special service number that switches regulation, identify the calling of this callings for being initiated to the network A switching;
In the step (d), described portable terminal is discerned this calling for switch the calling of being initiated to network A according to this calling number.
7, method as claimed in claim 6 is characterized in that: the call establishment of described portable terminal of step (d) and described network A may further comprise the steps:
(d1) after network A is received described calling, be initiated to the paging of described portable terminal, the network A of this portable terminal is partly returned page response;
(d2) network A sends call setup message to described portable terminal, carries described calling number in the message;
(d3) after the described portable terminal calling number that identifies this calling is described special service number, insert this calling automatically, return ALERTING message, network A sends Address Complete Message to TDMSC A;
(d4) described portable terminal returns connection message automatically and gives network A.
8, the method for claim 1 is characterized in that:
Behind the described TDMSC A of step (e) replay call, also discharge of the connection of described portable terminal, and discharge the connection and TDMSC A being connected to TDMSC B of TDMSC B to RNC at the TDCDMA network.
9, the method for claim 1 is characterized in that:
Described network A is GSM network, cdma network or WCDMA network.
10, the method for claim 1 is characterized in that:
Described mobile terminal user is in described network A contracted CLIP service and the signatory slow forward-shifting service and the affair of being transferred to civilian work in the early time, in the TDCDMA net caller number restriction business of contracting.
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CNB2007101302600A CN100562174C (en) | 2007-03-12 | 2007-07-17 | TDCDMA is to the method for follow-up switching between other network under the HLR amalgamation mode |
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CNB2007101302600A CN100562174C (en) | 2007-03-12 | 2007-07-17 | TDCDMA is to the method for follow-up switching between other network under the HLR amalgamation mode |
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