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A method, system and device for realizing multimedia call service

A calling service and multimedia technology, applied in the transmission system, selection device, electrical components, etc., can solve the problem that the 3G network cannot realize the function, and achieve the effect of shortening the time for establishing a video conversation

Inactive Publication Date: 2007-11-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of the existing WCDMA circuit domain architecture and multimedia call service implementation solutions, the current 3G network cannot implement some functions related to media stream processing that require the participation of network-side equipment.

Method used

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  • A method, system and device for realizing multimedia call service
  • A method, system and device for realizing multimedia call service
  • A method, system and device for realizing multimedia call service

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0140] Method Embodiment 1: The negotiation of multimedia call service type and / or media is loosely associated with call connection. The call scenario in this example is that user 1 and user 2 make a videophone call through two offices, namely MSC 1 and MSC 2. Shown in Fig. 16, comprise the following steps:

[0141] 1. User 1 initiates a multimedia call to user 2, and the call reaches UE2 via MSC1 and MSC2. UE2 judges that the service type in the SETUP message is a multimedia call, and then performs the following two operations concurrently.

[0142] 2. Concurrent operation One is to deal with the negotiation process of media flow logic channel between users. MSC can choose to participate in this process as one of the media negotiation parties, performing proxy functions and as one of the transparent transmission network elements.

[0143]3. Concurrent operation The second is to continue the call connection, complete the ringing and answer processing, and when the answer is ...

Embodiment 3

[0155] Method Embodiment 3: One of the schemes for strong association between negotiation of multimedia call service type and / or media and call connection. The call scenario of this embodiment: User 1 initiates a videophone call to User 2, passing through two offices, namely MSC 1 and MSC 2.

[0156] This example normalizes video telephony:

[0157] 1. Videophone consists of one voice, one video and one data (optional).

[0158] 2. There are many options for audio and video codecs, which need to be negotiated during the business process to make each network element consistent.

[0159] 3. The multiplexing table is determined by the calling terminal. In addition to the function of the H.223 multiplexing table, the multiplexing table also adds fields to indicate which entry in the table is used to transmit voice, which entry is used to transmit video, and which table Item transfer data, and send to the called terminal through all offices along the route. (if a standard multip...

Embodiment 4

[0165] Method Embodiment 4: The negotiation of multimedia call service type and / or media is strongly associated with call connection solution 2. The call scenario of this embodiment: User 1 initiates a videophone call to User 2, passing through two offices, namely MSC 1 and MSC 2. The control flow of this example is the same as that of Example 3, the difference lies in the establishment method of the logical channel. This example adopts the segmented establishment method: UE1 and MSC1, MSC1 and MSC2, and MSC2 and UE2 establish media stream logical channels in segments, as shown in Figure 20 .

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Abstract

This invention discloses a method, a system and a device for realizing multimedia call service, in which, the method includes: A, the parties taking part in multimedia call service carry out negotiations of multimedia service kinds and / or media via a call control signaling channel, B, setting up a media flow logic channel according to the negotiation result to realize multimedia call service. Since this invention is based on the negotiation out of the channel, the start time of the negotiation is not limited by the set-up of a loading service channel and the time of setting up video talk process is reduced.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method, system and device for realizing multimedia call service in circuit domain. Background technique [0002] The mobile circuit domain (CS DOMAIN) multimedia call service is an important service in the third-generation mobile communication system, and one of the symbolic services that distinguish the third-generation mobile communication from the second-generation. This service enables users to see the image of the other party while making a voice call, which is a service with important practical application value. [0003] WCDMA third-generation mobile communication defines a set of system architecture to complete various services, including multimedia call services. The basic network elements included in this system architecture are: user equipment UE, WCDMA system base station NODE B, WCDMA system base station controller RNC, MGW and MSC SERVER. A basic net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/22H04W76/02
CPCH04L65/1069H04W76/025H04L29/06326H04W76/15H04L65/752
Inventor 王耕
Owner HUAWEI TECH CO LTD
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