Design of IMS network video communication

With the advancement of science and technology, with the promotion of ITU-T, 3GPP, 3GPP2, OMA, TISPAN and other organizations, the complex standard work of IMS has been greatly promoted, and the network overall framework and local functional entities have been further improved. Perfect; secondly, from a market perspective, operators around the world have also begun a variety of network trials and tests related to IMS, and some have even begun commercial use. They not only focus on the integration of fixed and mobile technologies It also pays attention to the integration of IMS services and terminals.

Application background of IMS network

IMS is IP MulTImedia SubsySTem, which means IP multimedia subsystem in Chinese. It is the network architecture of the next-generation communication network (NGN) proposed by Lucent to achieve a large-scale integration solution. Bell Labs ’innovation in key IMS fields Various patented technologies of the enhancement layer determine the advanced nature of Lucent's IMS fusion solution. IMS solutions have many advantages over softswitch solutions, and are playing an increasingly important role in the NGN market. As of 2003, international authoritative standards organizations generally regard IMS as the core standard for NGN network convergence and business and technological innovation. For large-scale commercial deployment, IMS is mature enough from the technology itself. IMS can not only realize the initial VoIP service, but more importantly, IMS will manage network resources, user resources and application resources more effectively, improve the intelligence of the network, and enable users to cross various networks and use multiple terminals to experience the fusion Communication experience. As a communication architecture, IMS has created a new telecommunications business model and expanded the development space of the entire information industry. Among the five largest telecom operators in North America, four have so far deployed Lucent ’s IMS technology, which is of extremely important symbolic significance for the integration of wireless and wireline, marking a new stage in the global deployment of IMS. Of course, the growth of this technology system still focuses on basic operation services, and there are still many areas that need to be changed to achieve global network unification.

The IMS network can integrate basic services such as voice, video, Centrex, instant messaging, SMS, MMS, color image, and multimedia conference, mainly in the following two aspects:

First, the integration of fixed and mobile networks. The basic idea of ​​IMS network convergence is to organically combine Internet IP technology, softswitch technology derived from fixed network evolution and mobile core network technology to achieve the goal of convergence of fixed and mobile communication networks.

Second, the integration of the communications industry chain. IMS can drive the application industry, content provision, network platform, system software, terminal equipment, chip design and equipment manufacturing as the core information industry value chain.

While the IMS system provides IP multimedia services flexibly, it still maintains all the characteristics of mobile communications, which reflects the evolution of mobile communication networks towards IP networks. From the user's perspective, IMS brings many converged services, including new services such as video conferencing, video calling, and multimedia, which greatly enhances the user experience.

IMS hard terminal introduction

Datang Mobile provides a full range of IMS hard terminal products, including video phones, high-, medium-, and low-end voice phones, which can meet users' all-round requirements.

All series of products adopt TI chipset

The cost reduction scheme is a combination of "low-end and middle-end machines".

Figure 1: Datang Mobile IMS hard terminal products

IMS hard terminal features

Datang Mobile SP85, as a newly launched video phone, has functions such as voice call, video call, video conference, status presentation / speed dialing, etc., providing terminal carriers for operators to advertise and develop value-added services. Has the following functional characteristics:

High-quality application experience-7-inch LCD touch display, "keyboard + touch screen" operation mode

Top chip hardware guarantee-DaVinci chipset of TI (Texas Instruments), the world's top chip supplier, adopts AEC echo cancellation technology to ensure excellent voice effects.

Rich expansion interface-USB external connection, SD card, extended storage space, audio / video injection, external TV or projector.

Rich functional applications-electronic photo frame, music / video playback, status presentation / click dialing, enterprise remote address book, advertising, color ring back tone / color image service, information service.

IMS hard terminals realize enterprise commercial

Improving business processes to achieve the goal of increasing productivity is usually not done by importing a single process. Human factors must also be considered. Therefore, to provide effective communication through instant messaging, to meet collaborative work that is not restricted by time, place, and object, and to establish an open standard and a smart network network that takes into account system security, is a necessary condition for enterprises to explore gradually.

Figure 2: Datang Mobile IMS hard terminal business application

video conference

Datang Mobile's IMS hard terminals rely on excellent hardware chips to ensure high-quality hands-free playback. Through the expansion interface, they can be connected to televisions and projectors to enable users to conduct more convenient video conferences.

Ad serving

Datang Mobile IMS hardware terminal supports network-side advertising, can receive advertising media streams from the media server, supports terminal local advertising, and the built-in SD card can provide sufficient storage space. Based on this, it cooperates with the phone bill discount program through advertising services The strategy will greatly increase the operator's ARPU value.

Corporate Remote Directory

Datang Mobile's IMS hardware terminal supports the automatic extraction of corporate address book from the server, and automatic update in real time. By clicking the screen operation, the speed dial is completed, which provides great convenience for corporate users.

Conclusion

As a new cross-platform integration product, Datang Mobile's IMS hard terminals have brought new opportunities for the communications industry, opened a new model of next-generation integration services, and benefited enterprises and home users in various ways. It is not difficult to see that the network convergence is quietly blooming!

 

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