On the energy efficiency of base station sleeping with multicell cooperative transmission
On the energy efficiency of base station sleeping with multicell cooperative transmission
复制标题
DOI：
10.1109/pimrc.2011.6139761
复制
发表时间：
2011-09
期刊：
影响因子：
--
通讯作者：
Shengqian Han;Chenyang Yang;Gang Wang;M. Lei
中科院分区：
文献类型：
--
作者：
Shengqian Han;Chenyang Yang;Gang Wang;M. Lei
将未充分利用的基站（BS）切换到睡眠模式被认为是减少蜂窝网络能耗的一种有前途的方法，但它可能会增加剩余活动基站的发射功率以保证服务覆盖范围。协调多点（CoMP）可以通过BS协作有效地降低BS的发射功率，但是由于额外的信号处理和回程流量而需要额外的功耗。在本文中，我们研究了 BS 睡眠与 CoMP 相结合的能量效率。提出了一种联合功率和子载波分配算法，以最小化数据速率约束下的整体网络功耗，该算法可以跨多个集群分布式实现。仿真结果表明，与没有 BS 休眠的非 CoMP 系统相比，BS 休眠结合 CoMP 可以提高高数据速率用户的网络能效。
Switching underutilized base stations (BSs) to sleep mode is recognized as a promising approach to reduce energy consumption of cellular networks, but it may increase the transmit power of remaining active BSs to guarantee service coverage. Coordinated multi-point (CoMP) can effectively reduce transmit power of BSs through BS cooperation but requiring extra power consumption due to extra signal processing and backhaul traffic. In this paper, we investigate the energy efficiency of BS sleeping combined with CoMP. A joint power and subcarrier allocation algorithm is proposed to minimize the overall network power consumption with minimum data rate constraints, which can be implemented distributedly across multiple clusters. Simulation results show that BS sleeping combined with CoMP can improve network energy efficiency for high data rate users compared with Non-CoMP systems without BS sleeping.