Schedule-aware power management for energy-efficiency improvement in IEEE 802.11u WLAN

Di ZHANG

doi:10.11959/j.issn.1000-0801.2019193

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Schedule-aware power management for energy-efficiency improvement in IEEE 802.11u WLAN

research and development | 更新时间：2024-06-05

- Schedule-aware power management for energy-efficiency improvement in IEEE 802.11u WLAN
- Telecommunications Science Vol. 35, Issue 8, Pages: 88-96(2019)
- 作者机构：
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- DOI：10.11959/j.issn.1000-0801.2019193
  CLC： U285.2
- Published Online：2019-08，
  
  Published：20 August 2019
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Di ZHANG. Schedule-aware power management for energy-efficiency improvement in IEEE 802.11u WLAN[J]. Telecommunications science, 2019, 35(8): 88-96.
DOI：

Di ZHANG. Schedule-aware power management for energy-efficiency improvement in IEEE 802.11u WLAN[J]. Telecommunications science, 2019, 35(8): 88-96. DOI： 10.11959/j.issn.1000-0801.2019193.

摘要

支持IEEE 802.11u标准的移动终端在无线局域网提供的网络服务覆盖范围内可自动接入无线局域网。针对IEEE 802.11u无线局域网的特点，提出了一种基于时间序列感知的PSM（S-PSM）方案。采用IEEE 802.11u标准中定义的公共广播服务（GAS）来广播传输序列信息，所有终端根据该序列信息相应地控制自身的工作状态。为了降低竞争信道的碰撞概率，引入了响应竞争窗口。当接入点（AP）中没有数据分组时，AP 广播GAS帧并激活空闲计时器。所有终端进入睡眠状态直到空闲计时器到期。仿真结果表明，与传统的PSM相比，该方案能显著降低功耗，提升终端能效。

Abstract

A mobile terminal supporting the IEEE 802.11u standard can automatically access a wireless local area network within the coverage of a network service provided by a wireless local area network.Aiming at the characteristics of IEEE 802.11u WLAN

a time series sensing based PSM (S-PSM) scheme was proposed.The transmission sequence information was broadcasted using a generic advertisement service (GAS) defined in the IEEE 802.11u standard

and all terminals controlled their own operating states according to the sequence information.In order to reduce the collision probability of the contention channel

a response contention window was introduced.When there was no data packet in the access point (AP)

the AP broadcasted the GAS frame and activated the idle timer.All terminals went to sleep until the idle timer expires.The simulation results show that compared with the proposed traditional PSM

the scheme can significantly reduce power consumption and improve terminal energy-efficiency.

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references

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