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为了最小化能量受限的协作蜂窝小区的总代价,提出了上行链路的功率和中继等资源分配的模型.该模型是一个非线性约束、{0,1}组合优化问题,因而提出了一种自适应的资源分配方案对其求解.针对给定中继节点集合,该方案分别为每个源节点选择总代价最小的中继;而对于给定源和中继对,提出了最小化二者总代价的基于图论的最优功率分配算法.通过仿真和分析表明,该方案近似最优,能够发送更多的数据量,延长网络的寿命.
In order to minimize the total cost of cooperative cells with limited energy, a model of resource allocation such as power and relay in the uplink is proposed. The model is a nonlinear constrained {0,1} combinatorial optimization problem, An adaptive resource allocation solution to solve it.For a given set of relay nodes, the scheme separately selects the relay with the lowest total cost for each source node; and for a given source and relay pair, proposes to minimize The optimal power allocation algorithm based on graph theory is shown in the simulation and analysis.The results show that the proposed scheme is approximately optimal and can send more data and prolong the lifetime of the network.