Multi-carrier frequency digital multimedia wireless radio frequency hopping transmission logic channel mapping method

Abstract

The present invention provides a logic channel distribution method when a digital multimedia wireless radio employs the frequency hopping transmission. The logic channel distribution problem when the digital multimedia wireless radio employs the frequency hopping transmission is modeled to be a coloring problem; a coloring subgraph is constructed; the current coloring subgraph is colored, and it is determined whether the coloring is successful or not; if the coloring is not successful, when the parameters of the current coloring subgraph can be regulated, the parameters of the current coloring subgraph is regulated, and the coloring subgraph is reconstructed; if the coloring is successful, the logic channel distribution is successful; and if one coloring subgraph is failed, the logic channel distribution is failed. The logic channel distribution method when a digital multimedia wireless radio employs the frequency hopping transmission allows the time interval of the frames of the same logic channel from the same type of the radio on each carrier frequency to be larger than the frequency hopping protection time so as to allow the radio frames in the same logic channel set to satisfy the requirement of the frequency hopping protection time on multiple carrier frequencies.

Description

technical field [0001] The invention relates to the technical field of radio and television communication, in particular to a logical channel allocation method when digital multimedia wireless broadcasting adopts frequency hopping transmission. Background technique [0002] With the rapid development of information technology, television has begun to shift from the first generation of digital television (DVB-C, DVB-S, DVB-T, ATSC, ISDB-T, CMMB and DTMB) to the second generation of digital television on a global scale. Rapid development of TV (DVB-C2, DVB-S2, DVB-T2 and ATSC3.0). In China, as early as 2010, the "decision to speed up the integration of the telecommunications network, the radio and television network and the Internet" was proposed, and it was also pointed out that "the integration of the telecommunications network, the radio and television network and the Internet should be promoted to realize the interconnection of the three networks and the resources Sharing...

AI Technical Summary

Problems solved by technology

In the prior art, on the basis of obtaining the frame structure allocation pattern, the classic backtracking algorithm is used to solve the coloring problem. The advantage is that the algorithm is simple, and the disadvantage is that it does not support logical channel group frequency hopping transmission and takes a long time to calculate

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