CN101453689B - Method, device and system for triggering packet domain connection during circuit domain call - Google Patents

Method, device and system for triggering packet domain connection during circuit domain call Download PDF

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Publication number
CN101453689B
CN101453689B CN2007101963764A CN200710196376A CN101453689B CN 101453689 B CN101453689 B CN 101453689B CN 2007101963764 A CN2007101963764 A CN 2007101963764A CN 200710196376 A CN200710196376 A CN 200710196376A CN 101453689 B CN101453689 B CN 101453689B
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communication equipment
equipment
communication
packet
domain
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CN101453689A (en
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黄晓庆
唐剑峰
毕娅娜
杨波
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China Mobile Communications Group Co Ltd
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China Mobile Communications Group Co Ltd
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Abstract

The invention discloses a method for triggering PS domain connection during CS domain communication. The method comprises: when first communication equipment carries out the CS domain communication with second communication equipment, coding-decoding property of voice signal transmitted to the second communication equipment is changed; when the second communication equipment captures the change of the coding-decoding property of the voice signal, the equipment is triggered to establish the PS domain connection with the first communication equipment by a packet network. The invention simultaneously discloses the communication equipment and a communication system. Due to the adoption of the invention, the reliability of triggering the PS domain connection is improved, and the time of establishing the end-to-end PS domain connection is shortened.

Description

Trigger method, equipment and the system that packet domain connects during the circuit domain call
Technical field
The present invention relates to communication technical field, relate in particular to and trigger method, equipment and the system that packet domain connects during the circuit domain call.
Background technology
Along with the broadband development trend of mobile communication system, new multi-medium data value-added service continues to bring out, comprising with packet domain (PS territory, the Packet Switch domain) business of circuit domain (CS territory, Circuit Switch domain) speech combination.Medium technology of sharing in the communication process makes the both sides of circuit domain call can set up the packet domain connection as required at any time, and utilizes this connection that the content of multimedia on the portable terminal is sent to the opposite end, and media content shares between the realization portable terminal.The media content of sharing can be video, audio frequency and the picture that portable terminal is shot with video-corder in real time, also can be video, audio frequency and the picture of local storage.
In the medium technology of sharing, trigger the packet domain connection and can adopt following dual mode:
One, online mode always, the user keeps connection status with the PS territory always.
Two, phone is got through the triggering online mode, removes and being connected of PS territory in telephone finished.
The inventor invents above-mentioned medium technology of sharing and has following deficiency in realizing process of the present invention:
For first kind of mode, there is energy consumption problem in the online all the time not only end side of user, has also taken simultaneously the resource and the IP address of network side, initiates the probability of medium shared service with respect to the user, and online all the time is not good solution.
For the second way, phone is got through the problem that online meeting brings invalid connection to set up for the PS territory that triggers.Concerning network side, when peak value appears in telephone service, bring peak value to impact can for the PS territory, the PS territory that needs consideration to be set up equally connects goes up the probability that the medium shared service takes place.Concerning end side, each CS domain call all follows the PS territory to connect the process of setting up and removing, and can increase the power consumption of end side undoubtedly.
Prior art also provides note to trigger the solution that the PS territory connects.Multimedia message and Push Mail in this scheme and the existing network (Email pushes professional) adopt the scheme of note pull-up similar, bring unnecessary spending can for network side and end side; And the acquiescence portable terminal is in notconnect state, and when shared initiator initiated business, just excited users was to the connection of network side, and (Application Server AS) sends sharing request message to medium sharing application server.When AS judge to share the reciever user when not online, AS can send special binary system note to shared reciever and point out reciever to carry out the network connection and register to AS.
The scheme that said short message triggers the connection of PS territory is the terminal PS territory network connection activation pull-up scheme of existing network maturation, and technology realizes fairly simple; But the inventor finds that the medium shared service compares with multimedia message, the Push Mail of existing network by analysis, and real-time is had relatively high expectations.During this scheme implementation, the transmission quality of note transmission channel can not be guaranteed, and is particularly evident in transmission quality problem of special period (as festivals or holidays); In addition, note triggers and comprises following several sections durations when the PS territory connects: (1) caller network connects the activation duration; (2) called network connects the activation duration; (3) note transmission duration; (4) the Signalling exchange duration of application layer conversation foundation; Thereby cause service delay bigger.
Summary of the invention
The embodiment of the invention provides and triggers the method that packet domain connects during a kind of circuit domain call, triggers the reliability that packet domain connects in order to strengthen, and shortens end to end packet domain and connects and set up duration, and this method comprises:
First communication equipment is carrying out in the process of circuit domain call with second communication equipment, changes the encoding and decoding characteristic of the voice signal that sends to second communication equipment;
When second communication equipment captures the encoding and decoding characteristic variations of described voice signal, trigger this equipment and set up packet domain by packet network with first communication equipment and be connected.
The embodiment of the invention also provides a kind of communication equipment, triggers the reliability that packet domain connects in order to strengthen, and shortens packet domain connection end to end and sets up duration, and this communication equipment comprises:
First communication module is used for carrying out the process of circuit domain call with other communication equipment, sends voice signal to described other communication equipment;
Voice signal processing module is used to change the encoding and decoding characteristic of the voice signal that sends to described other communication equipment, triggers described other communication equipment and carries out packet domain by packet network and this equipment and be connected.
The embodiment of the invention also provides a kind of communication equipment, triggers the reliability that packet domain connects in order to strengthen, and shortens packet domain connection end to end and sets up duration, and this communication equipment comprises:
Second communication module is used for carrying out the process of circuit domain call with other communication equipment, receives the voice signal that described other communication equipment sends;
Trapping module is used to catch the encoding and decoding characteristic variations of described voice signal;
Trigger module is used for when capturing the encoding and decoding characteristic variations of described voice signal, triggers this equipment and sets up packet domain by packet network with described other communication equipment and be connected.
The embodiment of the invention also provides a kind of communication system, triggers the reliability that packet domain connects in order to strengthen, and shortens packet domain connection end to end and sets up duration, and this communication system comprises first communication equipment and second communication equipment:
First communication equipment is used for changing the encoding and decoding characteristic of the voice signal that sends to second communication equipment carrying out the process of circuit domain call with second communication equipment;
Second communication equipment is used for when capturing the encoding and decoding characteristic variations of described voice signal, triggers this equipment and is connected by the packet domain of packet network with first communication equipment.
In the embodiment of the invention, first communication equipment is carrying out in the process of circuit domain call with second communication equipment, changes the encoding and decoding characteristic of the voice signal that sends to second communication equipment; When second communication equipment captures the encoding and decoding characteristic variations of described voice signal, this equipment of triggering is set up packet domain by packet network with first communication equipment and is connected, based on existing voice call in the circuit domain call process, make the encoding and decoding characteristic variations of voice signal become the trigger message that packet domain connects, the operation that triggers the packet domain connection needn't additionally take Internet resources and address, needn't additionally increase power consumption of terminal.And, owing to be to trigger packet domain by existing circuit domain passage to connect, to compare with the technical scheme that is connected by note transmission channel triggering packet domain separately in the prior art, reliability obviously strengthens, and packet domain connection is end to end set up duration and is obviously shortened.
Description of drawings
Fig. 1 triggers the process chart that packet domain connects during the circuit domain call in the embodiment of the invention;
Fig. 2 is that portable terminal A triggers the process chart that packet domain is connected with portable terminal A in the embodiment of the invention during circuit domain call;
Fig. 3 A, Fig. 3 B, Fig. 3 C, Fig. 4 A, Fig. 4 B are the structural representation of communication equipment in the embodiment of the invention;
Fig. 5 is the structural representation of communication system in the embodiment of the invention;
Fig. 6 is the structural representation of communication system in an instantiation in the embodiment of the invention.
Embodiment
Below in conjunction with Figure of description the embodiment of the invention is elaborated.
As shown in Figure 1, in the embodiment of the invention, the handling process that triggers the packet domain connection during the circuit domain call is as follows:
Step 11, first communication equipment are carrying out in the process of circuit domain call with second communication equipment, change the encoding and decoding characteristic of the voice signal that sends to second communication equipment;
When step 12, second communication equipment capture the encoding and decoding characteristic variations of voice signal of reception, trigger this equipment and set up packet domain by packet network with first communication equipment and be connected.
In the flow process shown in Figure 1, first communication equipment can according to user's indication, change the encoding and decoding characteristic of the voice signal that sends to second communication equipment after the indication that receives user's initiation packet territory business.
First communication equipment can also be indicated according to the user, determines the applied logic of Client-initiated packet switch domain service correspondence, and the identification information of this applied logic is provided to second communication equipment.Second communication equipment can be according to the identification information of applied logic when capturing the encoding and decoding characteristic variations of voice signal, triggers on this equipment this applied logic and sets up packet domain by packet network with first communication equipment and be connected.
Second communication equipment can be set up packet domain with first communication equipment by applied logic on this equipment and be connected, second communication equipment corresponding applied logic on first communication equipment sends the response message of confirming to have received described circuit domain signaling message, and the above applied logic of this equipment of triggering is set up the packet domain connection.After applied logic received response message on first communication equipment, applied logic corresponding on second communication equipment sent the application layer signaling message.
First communication equipment and second communication equipment can be terminal equipments, as portable terminal, computer etc.
With the portable terminal is example, and as shown in Figure 2, portable terminal A and portable terminal B trigger the handling process that packet domain is connected during circuit domain call as follows:
Step 21, user are to the indication of portable terminal A initiation packet territory business.
Step 22, portable terminal A receive the indication of user's initiation packet territory business, according to user's indication, change the encoding and decoding characteristic of the voice signal that sends to portable terminal B.The encoding and decoding characteristic variations of this voice signal is as the trigger message that conversation portable terminal B initiation packet territory, opposite end is connected.
Portable terminal A determines the applied logic of Client-initiated packet switch domain service correspondence also according to user's indication.
Step 23, portable terminal A transmit the voice signal that has changed the encoding and decoding characteristic to portable terminal B, and the identification information of the applied logic of Client-initiated packet switch domain service correspondence.
Step 24, portable terminal B capture the variation of voice signal encoding and decoding characteristic.
Step 25, portable terminal B be according to the identification information of applied logic, sends to the applied logic of correspondence and set up the indication that packet domain connects.
Step 26, make the user of portable terminal B and to agree to accept to share under the prerequisite of indication, after receiving that setting up packet domain connects indication, portable terminal B initiatively sets up packet domain to network side and connects, promptly go up corresponding applied logic with portable terminal A and set up the packet domain connection, and go up the response message that described circuit domain signaling message has been received in corresponding applied logic transmission indication affirmation to portable terminal A by packet network.
After step 27, portable terminal A receive response message, go up corresponding applied logic to portable terminal B and send the application layer signaling message.
Based on same inventive concept, the embodiment of the invention also provides a kind of communication equipment, and its structure comprises as shown in Figure 3A: first communication module 31, voice signal processing module 32; Wherein, first communication module 31 is used for sending voice signal carrying out the process of circuit domain call with other communication equipment to other communication equipment; Voice signal processing module 32 is used to change the encoding and decoding characteristic of the voice signal that sends to other communication equipment, triggers other communication equipment and sets up packet domain by packet network and equipment and be connected.
Among the embodiment, first communication module 31 can also be used for carrying out the process of circuit domain call with other communication equipment, receives the indication of user's initiation packet territory business; Voice signal processing module 32 can also be used for the indication according to the user, changes the encoding and decoding characteristic of the voice signal that sends to other communication equipment.
Shown in Fig. 3 B, among the embodiment, the communication equipment shown in Fig. 3 A can also comprise: determination module 33, be used for indication according to the user, and determine the applied logic of Client-initiated packet switch domain service correspondence; First communication module 31 can also be used for providing to other communication equipment the identification information of applied logic.
Among the embodiment, first communication module 31 can also be used to receive the response message that described circuit domain signaling message has been received in affirmation that other communication equipment sends; Shown in Fig. 3 C, the communication equipment shown in Fig. 3 B can also comprise: the first applied logic module 34 is used for sending the application layer signaling message by first communication module 31 applied logic on other communication equipment.
Based on same inventive concept, the embodiment of the invention also provides a kind of communication equipment, and its structure comprises shown in Fig. 4 A: second communication module 41, trapping module 42, trigger module 43; Wherein, second communication module 41 is used for receiving the voice signal that other communication equipment sends carrying out the process of circuit domain call with other communication equipment; Trapping module 42 is used to catch the encoding and decoding characteristic variations of voice signal; Trigger module 43 is used for when capturing the encoding and decoding characteristic variations of voice signal, triggers this equipment and sets up packet domain by packet network with other communication equipment and be connected.
Among the embodiment, second communication module 41 can also be used to receive the identification information of the applied logic of the Client-initiated packet switch domain service correspondence that other communication equipment provides; Shown in Fig. 4 B, communication equipment shown in Fig. 4 A can also comprise: the second applied logic module 44, be used to receive the indication that the triggering packet domain of trigger module 43 connects,, trigger applied logic and set up packet domain by packet network with other communication equipment and be connected according to the identification information of applied logic.
Among the embodiment, the second applied logic module 44 can also be used to trigger applied logic to be confirmed to have received the response message of described circuit domain signaling message to other communication equipment transmission, and sets up the packet domain connection; Second communication module 41 can also be used to receive the application layer signaling message that other communication equipment sends.
Based on same inventive concept, the embodiment of the invention also provides a kind of communication system, and its structure comprises first communication equipment 51 and second communication equipment 52 as shown in Figure 5; Wherein, first communication equipment 51 is used for changing the encoding and decoding characteristic of the voice signal that sends to second communication equipment 52 carrying out the process of circuit domain call with second communication equipment 52; Second communication equipment 52 when being used to capture the encoding and decoding characteristic variations of voice signal, triggering this equipment and is connected by the packet domain of packet network with first communication equipment 51.
Still be example with the portable terminal, as shown in Figure 6, voice signal processing module realizes by audio coder ﹠ decoder (codec) among the portable terminal A, and the applied logic module realizes that by PS territory applied logic first communication module and determination module do not draw.Trapping module is realized by audio coder ﹠ decoder (codec) among the portable terminal B, and the applied logic module realizes that by PS territory applied logic second communication module and trigger module do not draw.
Wherein the audio coder ﹠ decoder (codec) among portable terminal A and the portable terminal B can receive the indication of user's initiation packet territory business.After receiving that the user indicates, audio coder ﹠ decoder (codec) can change the encoding and decoding characteristic of circuit domain voice signal.With the encoding and decoding characteristic variations of voice signal as requiring Correspondent Node to trigger the triggering indication information of PS territory business.This triggering index signal also needs to comprise the identification information of corresponding applied logic.Simultaneously, audio coder ﹠ decoder (codec) can capture the variation of the encoding and decoding characteristic of voice signal, as capturing the encoding and decoding characteristic variations, and according to the identification information of applied logic, send professional trigger notice to the applied logic of initiator's appointment by detecting rate variations.
One of ordinary skill in the art will appreciate that all or part of step in the foregoing description method is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
In the embodiment of the invention, first communication equipment is carrying out in the process of circuit domain call with second communication equipment, changes the encoding and decoding characteristic of the voice signal that sends to second communication equipment; When second communication equipment captures the encoding and decoding characteristic variations of described voice signal, this equipment of triggering is set up packet domain by packet network with first communication equipment and is connected, based on existing voice call in the circuit domain call process, make the encoding and decoding characteristic variations of voice signal become the trigger message that packet domain connects, the operation that triggers the packet domain connection needn't additionally take Internet resources and address, needn't additionally increase power consumption of terminal.And, owing to be to trigger packet domain by existing circuit domain passage to connect, to compare with the technical scheme that is connected by note transmission channel triggering packet domain separately in the prior art, reliability obviously strengthens, and packet domain connection is end to end set up duration and is obviously shortened.
In the embodiment of the invention, packet domain connection is end to end set up duration and is comprised: (1) end-to-end signaling transmission delay, and this time delay is very little; (2) both sides PDP (Packet Data Protocol, data pack protocol) settling time, both sides almost set up the PDP passage simultaneously; (3) the Signalling exchange duration of application layer conversation foundation.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (12)

1. trigger the method that packet domain connects during a circuit domain call, it is characterized in that this method comprises:
First communication equipment is carrying out in the process of circuit domain call with second communication equipment, changes the encoding and decoding characteristic of the voice signal that sends to second communication equipment;
When second communication equipment captures the encoding and decoding characteristic variations of described voice signal, trigger this equipment and set up packet domain by packet network with first communication equipment and be connected.
2. the method for claim 1 is characterized in that, first communication equipment according to described indication, changes the encoding and decoding characteristic of the voice signal that sends to second communication equipment after the indication that receives user's initiation packet territory business.
3. method as claimed in claim 2 is characterized in that, first communication equipment is determined the applied logic of Client-initiated packet switch domain service correspondence further according to described indication, and the identification information of described applied logic is provided to second communication equipment;
Described second communication device trigger is connected with the packet domain of first communication equipment and comprises: according to the identification information of described applied logic, trigger the above applied logic of this equipment and set up packet domain by packet network with first communication equipment and be connected.
4. method as claimed in claim 3, it is characterized in that, the above applied logic of this equipment of second communication device trigger and first communication equipment are set up packet domain and be connected and comprise: second communication equipment sends the response message of confirming to have received described circuit domain signaling message to the above applied logic of first communication equipment, and the above applied logic of this equipment of triggering is set up packet domain and connected;
This method further comprises:
After the above applied logic of first communication equipment receives described response message, send the application layer signaling message to the above applied logic of second communication equipment.
5. a communication equipment is characterized in that, comprising:
First communication module is used for carrying out the process of circuit domain call with other communication equipment, sends voice signal to described other communication equipment;
Voice signal processing module is used to change the encoding and decoding characteristic of the voice signal that sends to described other communication equipment, triggers described other communication equipment and carries out packet domain by packet network and this equipment and be connected.
6. equipment as claimed in claim 5 is characterized in that, described first communication module is further used for receiving the indication of user's initiation packet territory business;
Described voice signal processing module is further used for according to described indication, changes the encoding and decoding characteristic of the voice signal that sends to described other communication equipment.
7. equipment as claimed in claim 6 is characterized in that described equipment also comprises;
Determination module is used for determining the applied logic of Client-initiated packet switch domain service correspondence according to described indication;
Described first communication module is further used for providing to described other communication equipment the identification information of described applied logic.
8. equipment as claimed in claim 7 is characterized in that, described first communication module is further used for receiving the response message that described circuit domain signaling message has been received in affirmation that described other communication equipment sends;
Described equipment also comprises:
The first applied logic module is used for sending the application layer signaling message by described first communication module to the above applied logic of described other communication equipment.
9. a communication equipment is characterized in that, comprising:
Second communication module is used for carrying out the process of circuit domain call with other communication equipment, receives the voice signal that described other communication equipment sends;
Trapping module is used to catch the encoding and decoding characteristic variations of described voice signal;
Trigger module is used for when capturing the encoding and decoding characteristic variations of described voice signal, triggers this equipment and sets up packet domain by packet network with described other communication equipment and be connected.
10. equipment as claimed in claim 9, it is characterized in that, described second communication module is further used for receiving the identification information of the applied logic that described other communication equipment provides, and described applied logic is meant the applied logic of Client-initiated packet switch domain service correspondence;
Described equipment also comprises:
The second applied logic module is used to receive the indication that the triggering packet domain of described trigger module connects, and according to the identification information of described applied logic, triggers described applied logic and sets up packet domain by packet network with described other communication equipment and be connected.
11. equipment as claimed in claim 10, it is characterized in that, the described second applied logic module is further used for triggering described applied logic to be confirmed to have received the response message of described circuit domain signaling message to described other communication equipment transmission, and sets up the packet domain connection;
Described second communication module is further used for receiving the application layer signaling message that described other communication equipment sends.
12. a communication system is characterized in that, comprises first communication equipment and second communication equipment:
First communication equipment is used for changing the encoding and decoding characteristic of the voice signal that sends to second communication equipment carrying out the process of circuit domain call with second communication equipment;
Second communication equipment is used for when capturing the encoding and decoding characteristic variations of described voice signal, triggers this equipment and is connected by the packet domain of packet network with first communication equipment.
CN2007101963764A 2007-11-30 2007-11-30 Method, device and system for triggering packet domain connection during circuit domain call Active CN101453689B (en)

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CN105228206B (en) * 2014-05-27 2018-11-30 中国电信股份有限公司 Switching method and system between packet-switched domain and circuit switched domain voice business
CN111768609B (en) * 2020-06-29 2021-07-23 珠海格力电器股份有限公司 Infrared signal processing method and device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101019459A (en) * 2004-07-27 2007-08-15 意大利电信股份公司 Video-communication in mobile networks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101019459A (en) * 2004-07-27 2007-08-15 意大利电信股份公司 Video-communication in mobile networks

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
3GPP.3rd Gerneration Partnership Project *
Combining Circuit Switched (CS) and IP MultimediaSubsystem(IMS) Services *
Stage2 (Release 8).3GPP TS 23.2798.1.0.2007,8.1.0第11-24页. *
TechnicalSpecification Group Services and SystemAspects *
中华人民共和国信息产业部.会话初始协议(SIP)技术要求第2部分:基于会话初始协议(SIP)的呼叫控制的应用.中华人民共和国通信行业标准YD/T 1522.2-2006.2006,YD/T 1522.2-2006全文. *

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