Method for scheduling resources of frequency spectrum shared by digital TV broadcast system and wireless communication system

Abstract

The method includes following steps: in term of service need in the system, the digital TV broadcast system figures out the time of generating the next time slice of each service, and sends it to the service and frequency spectrum coordination unit; the coordination unit supervises and coordinates the service needs in digital TV broadcast system and in wireless communication system by using a time observation window in order to determine the time and length of frequency spectrum occupied different systems, and then transmits the dispatch message to the digital broadcast system and the wireless communication system; while each system occupies the frequency spectrum in an appointed time quantum, the digital broadcast renew the time of generating the next time slice of each service, and then transmits the message to the coordination unit.

Description

technical field [0001] The invention relates to the fields of digital television and wireless communication, in particular to a resource scheduling method between the two systems. Background technique [0002] With the introduction of several major digital TV broadcasting system standards, such as ATSC in the United States, DVB in Europe and ISDB in Japan, etc., digital TV has gradually entered the commercial stage. Worldwide, countries have also started commercial and trial operation of digital TV broadcasting systems. ETSI (European Telecommunications Standards Institute) has decided to realize the full conversion of analog TV to digital TV around 2010, and with the development of the situation, this time may be brought forward. At the same time, terrestrial digital TV broadcasting systems DVB-T and ISDB-T also support mobile reception, expanding the application range of digital broadcasting. [0003] Wireless communication network and digital TV broadcasting system are ...

AI Technical Summary

Problems solved by technology

[0008] The problem of this technology is that the spectrum dynamic allocation between digital TV broadcasting and wireless communication can be realized by dividing the frequency bands. Considering the working frequency bands of each network at different time points, the dynamic spectrum allocation algorithm is complicated, which is easy to cause mutual co-channel interference

[0010] The shortcoming of this technology is: from the point of view of its purpose and technical solution, it is only a kind of problem that solves the service on-demand in the broadcasting network, can't solve the problem that the integration of mobile communication and digital broadcasting faces, for example: 1) this invention is only to transmitter For discussion, the transmitter cannot realize the two-way link required by mobile communication; 2) The terminal-oriented data connection mentioned in the invention is used for the terminal to subscribe user services to the user service server, rather than mobile communication services, and its application scope is limited to on-demand services ; 3) The fusion of communication and broadcasting needs to realize the continuous coverage of the wireless access point to the area, and the transmitter scheme provided by the present invention cannot realize continuous coverage; 4) The fusion of communication and broadcasting requires stricter control of each access point (or Synchronization of uplink and downlink on the air interface between base stations), this invention cannot realize

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