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基于自适应最小竞争窗口的EDCA能源优化 被引量：1

EDCA energy optimization based on adaptive minimum contention window
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摘要 通过分析IEEE 802.11 EDCA各优先级竞争窗口对于能源利用率的影响,找出各优先级发送概率和能源利用率的关系。针对最优化最小竞争窗口设置问题,提出一种基于最大化能源利用率求各优先级最优发送概率的算法。在保证每类业务Qo S条件下,首先求出在最大化能源利用率下的最优发送概率,然后根据节点数目和最优发送概率来优化竞争窗口的大小,实现最优最小竞争窗口设置,从而提高能源利用率。仿真结果表明:该算法相对于EDCA在能源利用率方面有较好的表现。 By analyzing the influence of the priority-based service differentiation of IEEE 802. 11 EDCA on energy efficiency, the relationship between each priority transmission probability and ener- gy efficiency is found. In view of optimal minimum contention window setting problem, an algorithm based on maximizing energy efficiency is proposed, which aims to acquire the optimal transmission probability of each priority. In order to guarantee the QoS requirements of each type of service, the algorithm firstly calculates the optimal transmission probability under maximizing energy efficiency. And then, the optimized contention window size is calculated according to the number of nodes and the optimal transmission probability and the optimal minimum contention window setting is achieved, so as to improve energy utilization. Simulation results show that the algorithm has better performance improvement over EDCA in energy efficiency.
作者 李陶深 朱江红 葛志辉
机构地区 广西大学计算机与电子信息学院 广西高校并行与分布式计算技术重点实验室
出处 《广西大学学报（自然科学版）》 CAS 北大核心 2015年第5期1252-1259,共8页 Journal of Guangxi University（Natural Science Edition）
基金 国家自然科学基金资助项目(61363067) 广西自然科学基金资助项目(2012GXNSFAA053226)
关键词 IEEE802.11EDCA 竞争窗口 能源利用率 发送概率 IEEE 802. 11EDCA contention window energy efficiency transmission probability
分类号 TP393 [自动化与计算机技术—计算机应用技术]
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共引文献13

同被引文献12

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广西大学学报（自然科学版）
2015年 第5期

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