Satellite-ground integrated network communication and cache resource joint scheduling method

Abstract

The invention discloses a satellite-ground integrated network communication and cache resource joint scheduling method, which mainly solves the problems of low system combination rate and low user capacity in the prior art. The scheme comprises the following steps: constructing a satellite-ground integrated network communication and cache resource joint scheduling optimization scheme; decoupling the joint scheduling optimization scheme into an independent ground network resource scheduling optimization scheme and an independent satellite network resource scheduling optimization scheme by usingLagrange relaxation; and in each discrete time slot, respectively performing optimal resource scheduling on the ground network resource scheduling optimization scheme and the satellite network resource scheduling optimization scheme according to each link state and the wireless access link transmission content information at the current moment. The method solves the problem of non-convexity and satellite-to-ground backhaul capacity coupling constraint of satellite-to-ground integrated network communication and cache resource joint scheduling under the cache limited condition, is low in complexity and flexible in network demand target adjustment, and can be used for cache limited ground networks and different satellite constellation network heterogeneous systems.

Description

technical field [0001] The invention belongs to the technical field of communications, and in particular relates to a resource scheduling method, which can be used for radio resource management and control under a satellite-terrestrial integrated network with limited cache. Background technique [0002] In recent years, the demand for wireless mobile data traffic has shown an exponential growth trend. Traditional ground communication networks cannot guarantee wide coverage due to limited land resources. At the same time, considering the need to equip each cell with optical fiber or a stable wireless backhaul Links are impractical and thus limited terrestrial backhaul capacity greatly impacts network performance. Fortunately, the breakthroughs made in the low-earth orbit satellite network system in recent years provide an effective alternative for communication coverage expansion and stable backhaul connections, by deploying ultra-dense constellations and synergizing with tra...

AI Technical Summary

Problems solved by technology

[0005] In view of the difficulties in the above-mentioned scenarios, the traditional resource scheduling method of the ground network cannot be directly used for resource scheduling in this scenario, and research related to resource scheduling in this scenario is also very scarce

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