基于LTE-A的室外异构网络的感知干扰模型和基站功率节约最大化研究

项目名称： 基于LTE-A的室外异构网络的感知干扰模型和基站功率节约最大化研究

项目编号： No.61301145

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 李波

作者单位： 宁夏大学

项目金额： 24万元

中文摘要： 基于LTE-A的室外异构网络是为了优化传统网络而引入低功率基站(relay 和pico)来提升系统容量和QoS，但是这种新型架构网络的同频信道干扰成为网络性能提升的瓶颈。针对干扰问题，并结合绿色通信基站能效需求，欲推荐一种基于室外低功率基站感知小区间下行同频信道干扰的方法来实现异构网络干扰消除和基站功率节约。首先建立异构场景下的感知干扰模型。其次认识该模型中宏网基站和低功率基站间的行为关系，建立两种基站功率节约的策略空间。为了实现干扰消除，将策略空间研究转化为两种基站功率节约最大化的多目标非线性规划问题。通过选择合适的优化算法，获得令两个实体均满意的全局最优解。然后针对异构网络，设计感知干扰的基站功率节约最大化方案的具体实现过程。最后，通过量化评估和系统级仿真验证推荐方案的可行性和有效性。项目研究及结果对推动异构网络向自组织、自优化和自配置网络模式发展奠定了基础。

中文关键词： 感知干扰；超蜂窝；能效；功率回报；

英文摘要： Outdoor heterogeneous network for long term evolution advanced (LTE-A) creates severe interference. It is an urgent task to overcome the interference in macro cellular with outdoor low-power base stations (BSs), such as relay and pico. In our coming research,combining the requirement of energy efficiecy of base station for green communication, the cognitive interference model in interference zone (IZ) of the practical heterogeneous scenario will be proposed. Based on investigation of interaction between the macro BS and low-power BSs in this model, the strategy framework will be set up for interference management aiming to get the maximum net saving power for two kinds of base station. The study of interference management can be transformed into a multiple objective non-linear programming (MONLP) of the maximum saving power for them. To facilitate the best compromise solution for both, a suitable optimization method is employed to obtain the global optimum solution. In addition, the practical implementation using the proposed algorithm in outdoor heterogeneous network for LTE-A will be designed. Finally, numerical evaluation will be used to test the applicability of the proposed algorithm, and system level simulation can be used to demonstrate the effectiveness of the proposed sensing interference scheme. It is

英文关键词： cognitive sensing interference；ultra cellular network；energy efficiency；power reward；