A new enhanced inter-cell interference coordination （elCIC） is adopted for managing almost blank sub-frame （ABS）,which jointly exploits the time, frequency and power dimensions to improve the resource utilization....A new enhanced inter-cell interference coordination （elCIC） is adopted for managing almost blank sub-frame （ABS）,which jointly exploits the time, frequency and power dimensions to improve the resource utilization. In particular, a non-uniform two tier heterogeneous network （ HetNet） is considered, where the pico cells are located close to the macro cell and the number of users in each pico cell is different. To alleviate the interference caused by the co-channeldeployment,the macro cells employ low power ABS （LP- ABS）, and the resource blocks （RBs） are divided into twoparts during an ABS. One is exclusively reserved for macro cell users ad the other is reserved for pico cell users. Themacro cells are allowed to use different percentages of RBs and different powers for their own transmission during the LP- ABS. The user association,resource allocation,ABS proportion,the frequency band partition parameter and the transmission power of macro cells are considered, aiming at maximizing the proportional fairness utility of the system. An iterative algorithm is also proposed and simulation results demonstrate that the proposed algorithm can improve both the system throughput and user fairness compared with the existing schemes.展开更多
本文介绍了LTE Small Cell的基本概念,组网方式,主要应用和为LTE网络带来的收益,分析了Small Cell实际部署中所面临的主要问题和挑战,并针对性论述了解决问题所采用的关键技术和解决方案。重点描述了宏微干扰协同eICIC技术、时钟同步、...本文介绍了LTE Small Cell的基本概念,组网方式,主要应用和为LTE网络带来的收益,分析了Small Cell实际部署中所面临的主要问题和挑战,并针对性论述了解决问题所采用的关键技术和解决方案。重点描述了宏微干扰协同eICIC技术、时钟同步、回程网络、网络规划以及SON自组织网络等解决方案。展开更多
基金The National Science and Technology Major Project(2016ZX03001011-005)the National Natural Science Foundation of China(No.61571123,61521061)+1 种基金the Research Fund of National Mobile Communications Research Laboratory of Southeast University(No.2017A03)Qing Lan Project
文摘A new enhanced inter-cell interference coordination （elCIC） is adopted for managing almost blank sub-frame （ABS）,which jointly exploits the time, frequency and power dimensions to improve the resource utilization. In particular, a non-uniform two tier heterogeneous network （ HetNet） is considered, where the pico cells are located close to the macro cell and the number of users in each pico cell is different. To alleviate the interference caused by the co-channeldeployment,the macro cells employ low power ABS （LP- ABS）, and the resource blocks （RBs） are divided into twoparts during an ABS. One is exclusively reserved for macro cell users ad the other is reserved for pico cell users. Themacro cells are allowed to use different percentages of RBs and different powers for their own transmission during the LP- ABS. The user association,resource allocation,ABS proportion,the frequency band partition parameter and the transmission power of macro cells are considered, aiming at maximizing the proportional fairness utility of the system. An iterative algorithm is also proposed and simulation results demonstrate that the proposed algorithm can improve both the system throughput and user fairness compared with the existing schemes.
文摘本文介绍了LTE Small Cell的基本概念,组网方式,主要应用和为LTE网络带来的收益,分析了Small Cell实际部署中所面临的主要问题和挑战,并针对性论述了解决问题所采用的关键技术和解决方案。重点描述了宏微干扰协同eICIC技术、时钟同步、回程网络、网络规划以及SON自组织网络等解决方案。
