北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2015, Vol. 38 ›› Issue (4): 60-64.doi: 10.13190/j.jbupt.2015.04.013

• 论文 • 上一篇    下一篇

密集WLAN中的分布式接入点功率调整算法

史琰, 杨敏   

  1. 西安电子科技大学 综合业务网理论及关键技术国家重点实验室, 西安 710071
  • 收稿日期:2015-01-14 出版日期:2015-08-28 发布日期:2015-08-28
  • 作者简介:史琰(1975-),男,博士,E-mail:yshi@xidian.edu.cn.
  • 基金资助:

    国家自然科学基金项目(61172079);西安电子科技大学基本科研业务项目(7214497201)

Distributed Algorithm of Access Point Power Adjustment in Dense WLAN

SHI Yan, YANG Min   

  1. State Key Lab. of ISN, Xidian University, Xi'an 710071, China
  • Received:2015-01-14 Online:2015-08-28 Published:2015-08-28

摘要:

为了解决密集无线局域网(WLAN)中干扰严重、能耗高、网络性能难以优化等问题,提出了一种分布式接入点功率调整算法.终端周期性扫描获得备用接入点集合,并计算关联到备用接入点的功率等级信息.各接入点收集本地关联终端的上述信息,以降低发射功率为准则独立地计算终端的最优接入点.本算法能够在满足终端吞吐量需求的条件下,自适应地完成接入点功率调整和关联接入点的切换,降低WLAN在非高峰时段的整体能耗.

关键词: 功率等级, 备用接入点集, 最远终端集合, 主动切换

Abstract:

A dense wireless local area network (WLAN) has the problems of severe interference, high energy consumption and difficulty on network performance optimization. An energy saving algorithm, which features the adaptive power adjustment of access points in a distributed fashion, is proposed. In this algorithm, each access point collects the distribution information about local terminals, and adjusts its transmission power or active handoff under the condition that the lower power can satisfy the service requirements of terminals, especially in non-busy hours. The simulation results show that this algorithm actually takes effect in reducing the energy consumption in dense WLAN.

Key words: power class, backup access point set, farthest terminal set, active handoff

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