System fusing broadband wireless communication and TV broadcasting service

A broadband wireless communication and television broadcasting technology, applied in wireless communication, broadcasting service distribution, television and other directions, can solve the problems of wasting spectrum resources and inability to guarantee the effect of broadcasting data transmission.

Active Publication Date: 2010-06-02
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of transmission conflicts and reception failures caused by channel interference, the transmission effect of broadcast data cannot be guaranteed
In order to solve this problem, judging from the existing literature retrieval, data carousels based on unicast are essentially used, which greatly wastes limited spectrum resources.

Method used

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  • System fusing broadband wireless communication and TV broadcasting service
  • System fusing broadband wireless communication and TV broadcasting service
  • System fusing broadband wireless communication and TV broadcasting service

Examples

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Embodiment Construction

[0061] The system for integrating broadband wireless communication and digital TV broadcasting services is characterized in that it contains:

[0062] N multimedia program production sources, each channel of program information output by them respectively includes video information, audio information and additional information (subtitle information, etc.);

[0063] At least one multimedia encoding unit, whose input is the program information output by the above-mentioned program production source, and whose output is the multimedia information code stream formed after the above-mentioned program information is respectively subjected to high-efficiency compression encoding, multiplexing, and packaging;

[0064] At least one relay link can be any one of a metropolitan area network, a dedicated microwave link or an optical fiber link. Its input end is connected with the above-mentioned multimedia coding unit and the following wireless AP, and its output end is connected with the f...

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Abstract

The invention relates to a system fusing broadband wireless communication and TV broadcasting service, belonging to the wireless multimedia communication and TV broadcasting technical field. The invention is characterized in that the system comprises a plurality of multimedia programming sources, at least one multimedia coding unit, at least one relay link, at least one wireless access point AP, at least one broadcasting point BP and at least one controller; wherein, the controller comprises a time-frequency division multiplexing allocating and dispatching unit, a communication control unit, a broadcasting unit, a calculating unit and storage cell. The time-frequency division multiplexing allocating and dispatching unit divides channels in two-dimensional space composed of time and frequency, generates allocation pattern and dispatching signal to respectively dispatch the communication control unit and the broadcasting unit, thus respectively realizing mobile communication or communication on demand function and initiative broadcasting or broadcasting on demand function, the wireless access point also initiatively monitors the receiving status of broadcast packet, the calculating unit calculates packet loss rate and feedbacks the packet loss rate to the broadcasting point, and meanwhile information having public characteristic for massive users is supplied to the broadcasting point to realize broadcasting on demand.

Description

technical field [0001] The invention provides a system for integrating broadband wireless communication and television broadcasting services, which belongs to the cross field of wireless multimedia communication and television broadcasting technology, and particularly relates to a system based on time-frequency division multiplexing channels, which dynamically allocates and schedules spectrum resources to provide users with An efficient and reliable system for wireless communication and broadcasting services, which combines the advantages of wireless communication systems and broadcasting systems. Background technique [0002] With the development of wireless multimedia services and the increasing demands of users, wireless technology has an urgent need for spectrum. In today's increasingly scarce spectrum resources, technologies that obtain sufficient spectrum resources will develop rapidly, and vice versa will gradually withdraw from the stage of history. Therefore, how t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W28/20H04N7/26
Inventor 陆建华陶晓明王有政陈曦邵晓风
Owner TSINGHUA UNIV
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