Future application III

2. Location Service
TD-SCDMA investigates network-based methods to obtain the angle of arrival (AOA) and time of arrival (TOA) via subspace tracking and channel impulsive estimation. By incorporating the spatial–temporal channel of radio propagation, this technology proposes a unified objective function to extract mobile location information from the statistical distribution of AOA and TOA data in a cellular network.[1] The adoption of intelligent antenna and terminal synchronization technologies in TD-SCDMA has made positioning of a single base station possible. Compared with WCDMA and CDMA2000 systems, the TD-SCDMA system can provide a single base station with more accurate signal source positioning without additional GPS module. The speed of positioning turns faster, with more users getting more accurate positioning service at the same time. This service is useful for individual users, the location service can provide not only the location information of users, also transportation, entertainment, service, public facilities and location-based entertainment games, etc. On the other hand, rescue positioning, nursing, vehicle dispatching, logistic management and location advertisement services can also be provided to specific sectors.

3. Video Monitoring Service
The video monitoring service can capture real-time video signal through simulated or digital video equipment, and send the video signal to the streaming media service platform on the network for format transformation, and then play the video on the user-end through a mobile phone. Users can monitor what happen in their houses. Compared to traditional single module video monitoring system, TD-SCDMA can provide a better performance in real-time property and stability. [2]Besides the application mentioned above, the video monitoring service can also be used in many areas, such as monitoring for kindergarten, roads, parks and warehouses to provide customers with an assuring mobile life. According to the report of NTT DoCoMo, by the end of 2004, there were more than 10 million video-enabled mobile phones in Japan. Such a service has been widely accepted by the users. Therefore, with the development of mobile communications technologies and the wide commercialization of 3G in China, the application prospect of mobile video monitoring service is bright.

4. Streaming Media
China Mobile has taken streaming media as an key factor to create interests. It has commenced fiel trails on its streaming media solutions for 3G mobile phones. China Mobile will cooperate with other companies and provide exciting, feature rich content to the users. The streaming media is a service supported by streamed transmission. In the wireless network, the streaming media is mainly oriented toward the wireless packet network with wider bandwidth , such as GPRS/EDGE, UMTS, etc. It can be divided into video service and audio service according to different streaming media sources. The increase of bandwidth in the air interface of 3G network has provided a good foundation for the deployment of streaming media service. Combined with the features of a wireless system with no restriction on time and location, the mobile streaming media service is more appealing. The mobile streaming media can provide services like video-on-demand, live video, audio-on-demand and live audio, etc., the content of which includes TV, video, entertainment news, sports channel, music, news and cartoon, etc. The mobile streaming media will become one of the hottest services in the future 3G network to attract young users.

Reference:
[1] Hong Tang , Ting Li, Tianshuang Qiu and Yongwan Park, A macro-cell statistical location estimation method for TD-SCDMA networks, Signal ProcessingVolume 89, Issue 10,October 2009, Pages 1851-1863
[2] Tian, Zengshan; Zhang, Qin; He, Wei; Li, Qianjie, A novel dual module remote video monitoring system based on TD-SCDMA and CDMA2000 1X, Proceedings of the SPIE, Volume 7491, pp. 749110-749110-6 (2009).