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Method and system for call control

A call control and controller technology, applied in transmission systems, telephone communications, electrical components, etc., can solve the problems of complex processing process, heavy workload of ICCF units, waste of network resources, etc., to simplify the processing process and reduce the workload of interaction Effect

Active Publication Date: 2010-04-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] To sum up, in the process of implementing the present invention, the inventor found that there are at least the following problems in the prior art: when the MRFP unit joins the call link as a media stream source or media stream processing, during the processing of supplementary services , there is a situation of repeatedly joining the call link, which wastes network resources; and the workload of the ICCF unit is also relatively large, and the processing process is also relatively complicated

Method used

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  • Method and system for call control
  • Method and system for call control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Embodiment 1: The premise of this embodiment is that a call connection relationship has been established between the terminal equipment UE-A and UE-B, and a call is in progress, and the TAS exists in the call signaling link, Figure 4 The realization flow chart of this embodiment, the figure includes:

[0088] 1) UE-A initiates a call hold (Hold) request to the ICCF unit using an IMS circuit switching control protocol ICCP (IMS CS Control Protocol) message.

[0089] 2) ICCF generates an Update update message or Re-Invite re-invite and sends it to TAS. TAS recognizes the Hold request of UE-A, and decides to add MRFP to the call media link, and plays call hold tone to UE-B.

[0090] So far, the TAS dynamically adds the MRFP to the call link, so that the MRFP acts as a media stream source to play the call-holding tone to UE-B.

[0091] 3) The TAS initiates a call to the MRFC in the MRF unit, and sends the media information of the UE-B to the MRFC, where the media informat...

Embodiment 2

[0118] Embodiment 2: On the premise that UE-A and UE-B have established a call connection relationship, and the TAS exists in the call signaling link, Figure 5 The flow chart of the implementation method of the present embodiment includes:

[0119] 1 to 2) are the same as in Example 1.

[0120] 3) TAS recognizes the Hold request of UE-A, and decides to send a message containing a multimedia file to UE-B, such as a link address containing a voice (wav) file, where the multimedia file can be a Hold prompt tone or a piece of music, etc., Also, UE-A can directly send relevant multimedia file information to UE-B, and UE-B can directly play multimedia file content after obtaining the file (for example, actively obtaining the file from the link address of the file).

[0121] Here, the TAS does not add the MRFP to the call link, but directly sends the call hold announcement information to UE-B, and UE-B plays the call hold announcement according to the call hold announcement informa...

Embodiment 3

[0130] Embodiment 3: In this embodiment, MRFP has been added to the call media link, and the problem of RTCP is solved by TAS. Image 6 The flow chart of the method in this embodiment is implemented. The preconditions in the figure are: UE-A and UE-B are in call hold state, that is to say, there is an unresolved call between UE-A and MRFP, and between MRFP and UE-B. Activated media connection; MRFP plays the Hold tone to UE-B. The figure includes:

[0131] 1) UE-A initiates a call request to UE-C through an ICCP message.

[0132] 2) The ICCF converts the ICCP message into an Invite message and sends it to the TAS through the S-CSCF.

[0133] 3~4) TAS recognizes that the UE is making multiple voice calls with UE-B / C in CS access mode, and the TAS sends

[0134] MRFC initiates a call, and MRFC returns MRFP media information.

[0135] 5-6) TAS sends an Invite message to UE-C, including MRFP media information. UE-C returns an acknowledgement, including its own media informati...

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Abstract

The embodiment method of the present invention provides a call control method and a call control system. The control of a TAS to a multimedia resource function processor enables a call link of a callconnection to be performed between a MRFP dynamic or static access terminal equipment, and solves a RTCP problem generated during the process of realizing a complemental business, the control of the TAS to MRFP realizes the MRFP as a media streaming source to perform a function of a multimedia announce and must not be added in the call link repeatedly, to avoid the waste of the network resource; for an IMS circuit switching control function unit accessed newly, the function of the complemental business can be realized on the condition of not performing any amendment, to except from the interaction between the ICCF unit and the multimedia resource function processor, and to simplify the process.

Description

technical field [0001] The present invention relates to the technical field of mobile communications, and in particular, to a method and system for call control. Background technique [0002] At present, the mobile communication network is dominated by circuit-switched CS (Circuit-Switched), including GSM, CDMA networks, etc. Each operator has established a relatively complete and rich service platform based on the CS network, among which the MSC (Mobile Switching Center) Responsible for call routing and business logic execution, such as call forwarding services, call holding services, etc.; however, the services provided by the CS network require the support of the roaming MSC, which is very disadvantageous for the introduction of new services; IP Multimedia Subsystem IMS (IP Multimedia Sub- system) is a service network based on packet switching, and its service provision has nothing to do with roaming locations, which is conducive to the introduction of new multimedia serv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/16H04W76/02
CPCH04L65/1046H04L65/1096H04L29/06278H04M7/125H04L29/0638H04L65/1094
Inventor 龙水平
Owner HUAWEI TECH CO LTD
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