A resource scheduling method for satellite communication system with joint beam hopping and precoding

Abstract

The invention provides a joint beam hopping and precoding satellite communication system resource scheduling method, including: establishing a beam hopping time slot allocation objective function based on service priority; The optimal solution obtains the time slot allocation matrix of each beam; analyzes the time slot allocation results of each beam, and finds out the beams with severe co-frequency interference according to the co-frequency multiplexing distance; design the precoding at the transmitter to allocate beam hopping resources The beams with co-frequency interference in the scheme are subjected to interference suppression and elimination; the resource scheduling method provided by the present invention satisfies the dynamic scheduling of satellite resources, avoids performance degradation caused by co-frequency interference, and improves resource utilization and system capacity.

Description

technical field [0001] The present invention relates to the technical field of satellite communication, in particular to a resource scheduling method for a satellite communication system with joint beam hopping and precoding. Background technique [0002] In the traditional multi-beam satellite communication system, the spectrum, power, time slot and other resources allocated to each beam are fixed; however, with the development of satellite communication, the service requirements of users vary greatly, and user services are And the spatial distribution is also seriously uneven, and this fixed resource allocation can easily lead to fragmentation of resource utilization and uneven load between beams. In response to the above problems, beam hopping technology emerged as the times require. As a key technology for the evolution and leap of high-throughput satellite technology to very high-throughput satellite technology, it provides a foundation for the flexible allocation and e...

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Problems solved by technology

[0003] However, since the core of beam hopping is business-driven and on-demand coverage, there must be multiple adjacent beams working at "full power and full frequency band" simultaneously in hotspot areas with high business demand, that is to say, there are multiple beams in The working time overlaps and the spatial distance is close, so users of adjacent beams will inevitably encounter severe co-channel interference, which will affect system performance and make it difficult to make full use of the technical advantages of beam hopping

These have brought more stringent challenges to the design based on beam hopping: not only to meet the needs of user business differentiation, adapt to the uneven distribution of business time and space, but also must consider the method of co-channel interference suppression, resource allocation Joint design

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