System fusing broadband wireless communication and TV broadcasting service

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...

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.

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