基于复杂网络演化的多跳中继网络容量优化与节能机制研究

Multihop relay technology is a key technology to improve the capacity and energy efficiency performance in the next generation wireless networks. Research on the issues of wireless network capacity and energy efficiency can provide an effective theoretical basis for designing transmission strategy and power saving mechanism. However, the current research still remain some technical challenges : Existing models can not characterize the true property of wireless networks; It is limited study on the network capacity issue; Considering the power saving soltuion obtained from a single node scenario,It can not optimize the whole network power saving. This research project will combine the complex network theory and wireless networking features, build the complex network evolution model in wireless space ,as a basis to investigate the issue of the network capacity and energy efficiency in multi-hop relay network . The main contents include : It is proposed to analyze the behavioral property of wireless nodes to establish space complex network evolution model and extract property parameters; Study the issue of wireless multi-hop relay network capacity. Through anaylzing the property of parameters in complex network, it can reveal the nature of network capacity. It is proposed to using relay cooperative evolutionary game theory to optimize the network capacity; Combining the characteristics of complex network, a new energy efficiency criteria is porposed for single node and whole network. In order to improve the energy efficiency of the whole network, the optimal solution is proposed and testified the performance of the energy-saving mechanism . The achievement of this project can be more general promotion, and provide the theoretical tools and analytical methods for the related research. The strategy of network efficiency optimization can be applied in green communications.

中继多跳技术是下一代无线网络中提高容量与能效的关键技术。无线网络容量与能效的研究可以为传输策略与节能机制设计提供有效的理论依据，但当前相关研究依然存在挑战。现有模型无法表征真实无线网络特性，网络容量性质研究受限；只考虑单节点的节能技术无法实现整网能效优化。本项目将复杂网络理论与无线网络特性相结合，构建无线多跳中继复杂网络演化模型，以此为基础研究无线多跳中继网络容量与能效问题。主要研究内容包括：分析无线节点行为特性，建立空间复杂网络演化模型并提取特征参量；研究无线多跳中继网络的网络容量，通过对复杂网络特征参量分析揭示容量性质，提出中继协作演化博弈实现网络容量优化；结合复杂网络特征提出单节点与整网能效衡量准则，以整网能效提升为目标研究网络能效优化方法，设计节能机制并验证性能。本项目网络容量研究成果可进行更一般的推广，为相关研究提供理论工具与分析方法；网络能效优化策略在绿色通信中具有应用价值。

协作中继技术有利于提高网络覆盖和链路信道质量，是下一代通信网络的关键技术，本项目重点关注了复杂网络与多跳协作中继网络的能效与容量问题的研究。针对无线传感器网络中多跳协作路由问题，利用小世界网络理论，分析了无线节点的行为特性，给出了出现失效节点情况下，快速恢复汇聚节点和簇节点的方案，提高了网络的生存时间；针对无线携能传输的多跳中继网络，项目重点分析了用户间协作的定价机制，多天线场景的预编码设计机制，多中继选择方案等高能效的无线资源管理方案，揭示多点协作对提升网络整体能效的作用机制，最后针对移动中继场景的能效问题，分析了无人机作为协作中继节点的无线资源管理问题，从飞行能耗和通信能耗两个角度分析多跳协作中继网络的容量和能效问题。本项目对多跳协作网络的容量和能效研究，揭示了网络中节点从行为特性，定价机制，预编码协作等角度提升网络能效的理论机制和功能效果，对未来无线网络中的绿色通信具有较大的应用价值。