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中文摘要：
提出了一种基于协同机理的异构无线网络融合机制，并就协同中继选择给出了基于效用函数的理论优化模型．该模型在保证第1跳和第2跳链路传输速率匹配的前提下，从全局优化的角度选择最佳的中继节点．为了降低计算复杂度，给出了次优的异构协同中继节点选择算法．仿真结果表明，该协同中继节点选择算法能显著提高异构网络的性能．
英文摘要：
A cooperative theory based convergence mechanism for heterogeneous wireless networks is presented, and a theoretical optimization model for the cooperative relay selection is proposed, in which the utility function is involved. The proposed model can determine the optimal relay nodes from the global viewpoint under the conditions of equivalent transmission rates between the first and second hops. In order to decrease the computation complexity, a sub-optimal relay selection algorithm is presented. Simulation shows that the proposed cooperative relay selection algorithm can improve the overall performances dramatically.
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