Optimal efficiency power distribution method for aerial platform with limited satellite return travel

Abstract

The invention relates to an optimal efficiency power distribution method for an aerial platform with a limited satellite return travel. The method comprises the steps of acquiring a system parameter required for power distribution; constructing an optimal efficiency model by considering total power constriction, peak power limitation, a user QoS (quality of service) requirement and satellite return travel link capacity limitation; introducing a non-negative parameter lambda to convert a target function into an equivalent parameter-containing target function; obtaining power distribution and a target function value under a given parameter lambda according to a water injection rule without considering the limitations to the total power and the return travel link capacity; updating the parameter lambda; repeating the previous two steps until the target function value is smaller than a given threshold value; obtaining a lower limit lambda(min) of the parameter lambda according to the limitations to the total power and the return travel link capacity; determining an optimal parameter lambda*; obtaining the optimal power distribution of a user according to lambda*. According to the optimal efficiency power distribution method provided by the invention, the total power constriction, the peak power limitation, the user QoS requirement and the return travel link capacity limitation are considered, so that the complexity of the algorithm is low, and the implementability is high.

Description

technical field [0001] The invention relates to the technical field of space-space-ground joint communication, in particular to a method for optimal power allocation of air platforms with limited backhaul of satellites. Background technique [0002] When a large-scale disaster or unexpected emergency occurs, the affected people need to call for assistance or contact their relatives to find out if they are safe, so the ground communication network may be overloaded or even paralyzed. But at the same time communication systems play a very important role in public safety. Therefore, effective Public Protection and Disaster Relief (PPDR) systems are very important to satisfy victims and first responders, and unlike traditional cellular network communications, PPDR systems have specific requirements for underlying wireless technologies. The system should be quick to install, provide high-capacity coverage, and be flexible and stable. [0003] In this regard, the ABSOLUTE progra...

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Problems solved by technology

[0005] In order to solve the problem of excessive load or even paralysis of the ground network caused by large-scale disasters or emergencies, the present invention proposes an optimal power allocation method for energy efficiency of air platforms with limited satellite backhaul. The method considers the total power constraint, and the peak Power constraints, QoS requirements per user, and satellite backhaul link capacity constraints

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