CN101277519A - Method and system for establishing call connection - Google Patents
Method and system for establishing call connection Download PDFInfo
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- CN101277519A CN101277519A CNA2007100895454A CN200710089545A CN101277519A CN 101277519 A CN101277519 A CN 101277519A CN A2007100895454 A CNA2007100895454 A CN A2007100895454A CN 200710089545 A CN200710089545 A CN 200710089545A CN 101277519 A CN101277519 A CN 101277519A
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Abstract
The present invention provides a call connection establishment method and system, wherein, the call connection establishment method includes following steps: S202, a service moving switching center pages a boundary moving switching center; S204, the service moving switching center requests to the boundary moving switching center to establish call connection by call connection establishment information under the condition of IP connection between the service moving switching center and the boundary moving switching center, wherein, the call connection establishment information is carried with a virtual circuit mark; and S206, the boundary moving switching center is response to the call connection establishment information, establishing call connection by the virtual circuit mark and the service moving switching center. The invention establishes the call connection between the service moving switching center and the boundary moving switching center under the condition of adopting IP connection mode between two stations.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of call connection establishing method and system.
Background technology
In the wireless communication networks of CDMA 2000, travelling carriage is usually in different mobile switching center emulation (Mobile switching center emulation is called for short MSCe) service area roaming.
In order to improve paging success rate, thereby improve percept of call completed, can realize inter-system paging.Inter-system paging is meant in the scope that the MSCe that serves MSCe and face mutually covers and carries out paging.
In existing wireless telecommunication system, the roughly flow process of inter-system paging following (referring to shown in Figure 1):
S102, service MSCe sends InterSystemPage2 message (inter-system paging message) to the border MSCe relevant with paging domain.
S104 after the called success of border MSCe paging, sends the response message of expression paging success to service MSCe.
S106, service MSCe applies for MAP agreement (the Mobile Application Part of border MSCe, be called for short MAP) circuit, send InterSystemSetup message (message connects between system), and carry the circuit identifier (CircuitIdentification Code, be called for short CIC) of MAP circuit.
S108, border MSCe take the MAP circuit of interoffice, and apply for the land circuit of base station, called place, and indication base station application wireless air channel, and bearing resource application success back sends successful InterSystemSetup response message to service MSCe.
The connected mode of using above-mentioned flow process can only solve interoffice is the call setup problem under the circuit situation about connecting, and adopts call setup problem under the situation of connected mode of IP and can't solve for two interoffices.
The method of the call proceeding behind the inter-system paging in the time of therefore, need providing a kind of IP of solution to connect.
Summary of the invention
One or more problems in view of above the present invention proposes a kind of call connection establishing method and system.
Call connection establishing method according to the present invention may further comprise the steps: S202, serving mobile switching center paging boundary mobile exchanging center; S204, be under the IP situation about being connected between serving mobile switching center and boundary mobile exchanging center, serving mobile switching center is set up message by the calling connection and is set up the calling connection to the boundary mobile exchanging center request, and wherein, the calling connection is set up message and carried the virtual circuit sign; And S206, boundary mobile exchanging center is set up message in response to calling out to connect, and sets up to call out by virtual circuit sign and serving mobile switching center to be connected.
Wherein, call out to connect and to set up message and comprise and connect message and set up conversation message.And the message and set up conversation message and all carry virtual circuit sign of connecting.
Wherein, step S206 further may further comprise the steps: S2062, and boundary mobile exchanging center is set up message relating by will connect message and the session of virtual circuit sign; S2064, boundary mobile exchanging center is set up message in response to connect message and session, by virtual circuit sign application bearing resource and assignment wireless channel, is connected thereby set up calling with serving mobile switching center.
Wherein, serving mobile switching center is set up message by sending to the RTP of corresponding gateway application terminal to call out to connect.
Calling connection according to the present invention is set up system and is comprised: paging equipment, be positioned at the serving mobile switching center side, and be used for the paging boundary mobile exchanging center; The setup requests device, be positioned at the serving mobile switching center side, be used between serving mobile switching center and boundary mobile exchanging center is under the IP situation about being connected, set up message to boundary mobile exchanging center request foundation calling connection by calling out to connect, wherein, the calling connection is set up message and is carried the virtual circuit sign; And call out the connection apparatus for establishing, and be positioned at the boundary mobile exchanging center side, be used for setting up message in response to calling out to connect, set up calling by virtual circuit sign and serving mobile switching center and be connected.
Wherein, the calling of sending of setup requests device connects and sets up message and comprise and connect message and set up conversation message.The message that connects and set up conversation message and all carry virtual circuit sign.
Wherein, call out to connect apparatus for establishing and comprise: the message relating module is used for setting up message relating by will connect message and the session of virtual circuit sign; Connect and set up module, be used for setting up message,, be connected thereby set up calling with serving mobile switching center by virtual circuit sign application bearing resource and assignment wireless channel in response to connect message and session.
Wherein, the setup requests device is set up message by sending to the RTP of corresponding gateway application terminal to call out to connect.
By the present invention, can adopt under the situation of connected mode of IP at two interoffices, between service serving mobile switching center and boundary mobile exchanging center, set up to call out and connect.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet that continues behind the inter-system paging of the packet domain in the correlation technique;
Fig. 2 A and Fig. 2 B are according to the call connection establishing method of the embodiment of the invention and the flow chart of step S206 thereof;
Fig. 3 is the schematic flow sheet of call connection establishing method according to another embodiment of the present invention; And
Fig. 4 is the block diagram that connects the system that sets up according to the calling of the embodiment of the invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
With reference to figure 2A and Fig. 2 B, the call connection establishing method according to the embodiment of the invention is described.Shown in Fig. 2 A, call connection establishing method according to the present invention may further comprise the steps: S202, serving mobile switching center paging boundary mobile exchanging center; S204, be under the IP situation about being connected between serving mobile switching center and boundary mobile exchanging center, serving mobile switching center is set up message by the calling connection and is set up the calling connection to the boundary mobile exchanging center request, and wherein, the calling connection is set up message and carried the virtual circuit sign; And S206, boundary mobile exchanging center is set up message in response to calling out to connect, and sets up to call out by virtual circuit sign and serving mobile switching center to be connected.
Wherein, call out to connect and to set up message and comprise and connect message and set up conversation message.And the message and set up conversation message and all carry virtual circuit sign of connecting.
Shown in Fig. 2 B, step S206 further may further comprise the steps: S2062, and boundary mobile exchanging center is set up message relating by will connect message and the session of virtual circuit sign; S2064, boundary mobile exchanging center is set up message in response to connect message and session, by virtual circuit sign application bearing resource and assignment wireless channel, is connected thereby set up calling with serving mobile switching center.
Wherein, serving mobile switching center is set up message by sending to the RTP of corresponding gateway application terminal to call out to connect.
With reference to figure 3, call connection establishing method according to another embodiment of the present invention is described.Though method for call connection of the present invention can use signaling protocol between system arbitrarily, following is that example illustrates the call connection establishing method according to the embodiment of the invention with MAP and sip message.In Fig. 3,1,2 on service bureau's gateway be illustrated in two terminals creating on the gateway (T1, T2); On the edge office gateway 3,4 be illustrated in two terminals creating on the edge office gateway (T3, T4).
As shown in Figure 3, call connection establishing method may further comprise the steps according to another embodiment of the present invention:
S302, service MSCe sends InterSystemPage2 message (inter-system paging message) to the border MSCe relevant with paging domain.
S304 after the called success of border MSCe paging, sends the response message of expression paging success to service MSCe.
S306, after service MSCe receives the success response message of inter-system paging message, if find that it is that the IP mode connects that local exchange is followed between the MSCe of border, then distribute virtual CIC, arrive RTP (RealtimeTransport Protocal the is called for short RTP) terminal of border office to the gateway application of correspondence.Service MSCe sends the InterSystemSetup message of MAP to border MSCe, and carries virtual CIC, and this virtual CIC is not an actual physical resource and in logic notion just is used to identify same data field in border office.
S308, send Session initiation Protocol (Session InitiationProtocal to border MSCe simultaneously, abbreviation SIP) INVITE (setting up session), carry Session Description Protocol (Session Description Protocol is called for short SDP) information and the virtual CIC of local terminal OGT outgoing terminal T2.
S310, border MSCe gets up two message relatings by virtual CIC, and after collecting two message, directly takies virtual CIC and carry out the application of local exchange bearing resource and the operations such as assignment of wireless channel.Border MSCe sends the response message of InterSystemSetup to service MSCe.
S312, border MSCe send 200 OK (INVITE) message of SIP, the SDP information of carrying the ICT incoming terminal T3 of border MSCe simultaneously to service MSCe.Service MSCe receives after above-mentioned two message, carries out the negotiation of encoding and decoding, and operations such as the far-end SDP information of the OGT outgoing terminal of renewal local exchange and code/decode format.
In sum, in the embodiment shown in fig. 3, behind the inter-system paging of InterSystemPage2, adopt the InterSystemSetup message (the perhaps signaling message of other interoffice) of MAP and sip message (perhaps other similar IP territory session protocols, carry SDP information) mode that combines, by virtual CIC (the perhaps parameter of other similar notions in logic) two class message relatings are got up, finish continuing of interoffice.
With reference to figure 4, illustrate that the calling according to the embodiment of the invention connects the system that sets up.As shown in Figure 4, set up system according to the calling connection of the embodiment of the invention and comprise: paging equipment 402, be positioned at the serving mobile switching center side, be used for the paging boundary mobile exchanging center; Setup requests device 404, be positioned at the serving mobile switching center side, be used between serving mobile switching center and boundary mobile exchanging center is under the IP situation about being connected, set up message to boundary mobile exchanging center request foundation calling connection by calling out to connect, wherein, the calling connection is set up message and is carried the virtual circuit sign; And call out connection apparatus for establishing 406, and be positioned at the boundary mobile exchanging center side, be used for setting up message in response to calling out to connect, set up calling by virtual circuit sign and serving mobile switching center and be connected.
Wherein, the calling of sending of setup requests device connects and sets up message and comprise and connect message and set up conversation message.The message that connects and set up conversation message and all carry virtual circuit sign.
Wherein, call out to connect apparatus for establishing 406 and comprise: message relating module 4062 is used for setting up message relating by will connect message and the session of virtual circuit sign; Connect and set up module 4064, be used for setting up message,, be connected thereby set up calling with serving mobile switching center by virtual circuit sign application bearing resource and assignment wireless channel in response to connect message and session.
Wherein, the setup requests device is set up message by sending to the RTP of corresponding gateway application terminal to call out to connect.
By the present invention, can adopt under the situation of connected mode of IP at two interoffices, between service serving mobile switching center and boundary mobile exchanging center, set up to call out and connect.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a call connection establishing method is characterized in that, may further comprise the steps:
S202, serving mobile switching center paging boundary mobile exchanging center;
S204, be under the IP situation about being connected between described serving mobile switching center and described boundary mobile exchanging center, described serving mobile switching center is set up message to described boundary mobile exchanging center request foundation calling connection by calling out to connect, wherein, described calling connection is set up message and is carried the virtual circuit sign; And
S206, described boundary mobile exchanging center connects in response to described calling sets up message, sets up to call out with described serving mobile switching center by described virtual circuit sign to be connected.
2. call connection establishing method according to claim 1 is characterized in that, described calling connects sets up message and comprise and connect message and set up conversation message.
3. call connection establishing method according to claim 2 is characterized in that, described message and the described conversation message of setting up of connecting all carries described virtual circuit sign.
4. call connection establishing method according to claim 3 is characterized in that, described step S206 further may further comprise the steps:
S2062, described boundary mobile exchanging center is set up message relating by described virtual circuit sign with described connect message and described session;
S2064, described boundary mobile exchanging center is set up message in response to described connect message and described session, and by described virtual circuit sign application bearing resource and assignment wireless channel, thereby setting up to call out with described serving mobile switching center is connected.
5. according to each described call connection establishing method in the claim 1 to 4, it is characterized in that described serving mobile switching center is set up message by send described calling connection to the RTP of corresponding gateway application terminal.
6. system is set up in a calling connection, it is characterized in that, comprising:
Paging equipment is positioned at the serving mobile switching center side, is used for the paging boundary mobile exchanging center;
The setup requests device, be positioned at described serving mobile switching center side, be used between described serving mobile switching center and described boundary mobile exchanging center is under the IP situation about being connected, set up message to described boundary mobile exchanging center request foundation calling connection by calling out to connect, wherein, described calling connection is set up message and is carried the virtual circuit sign; And
Calling connects apparatus for establishing, is positioned at described boundary mobile exchanging center side, is used for setting up message in response to described calling connection, sets up calling by described virtual circuit sign with described serving mobile switching center and is connected.
7. calling according to claim 6 connects sets up system, it is characterized in that, the described calling that described setup requests device sends connects sets up message and comprise and connect message and set up conversation message.
8. calling according to claim 7 connects sets up system, it is characterized in that, described message and the described conversation message of setting up of connecting all carries described virtual circuit sign.
9. calling according to claim 8 connects sets up system, it is characterized in that described calling connects apparatus for establishing and comprises:
The message relating module is used for by described virtual circuit sign message relating being set up in described connect message and described session;
Connect and to set up module, be used for setting up message in response to described connect message and described session, by described virtual circuit sign application bearing resource and assignment wireless channel, thereby setting up to call out with described serving mobile switching center is connected.
10. connect according to each described calling in the claim 1 to 4 and set up system, it is characterized in that, described setup requests device is set up message by send described calling connection to the RTP of corresponding gateway application terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100895454A CN101277519A (en) | 2007-03-29 | 2007-03-29 | Method and system for establishing call connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100895454A CN101277519A (en) | 2007-03-29 | 2007-03-29 | Method and system for establishing call connection |
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| Publication Number | Publication Date |
|---|---|
| CN101277519A true CN101277519A (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100895454A Pending CN101277519A (en) | 2007-03-29 | 2007-03-29 | Method and system for establishing call connection |
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|---|---|
| CN (1) | CN101277519A (en) |
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- 2007-03-29 CN CNA2007100895454A patent/CN101277519A/en active Pending
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Open date: 20081001 |