New 802.11h mechanisms can reduce power consumption

摘要

The original purpose of the IEEE 802.11h standard was to extend WLAN operation in Europe to the 5 GHz band, where WLAN devices need dynamic frequency selection (DFS) and transmit power control (TPC) to coexist with the band's primary users, i.e. radar and satellite systems. Although 802.11h defines the mechanisms or protocols for DFS and TPC, it does not cover the implementations themselves. With some amendments to the 802.11h standard to address this need, the mechanisms for DFS and TPC can be used for many other applications with the benefits of automatic frequency planning, power consumption reduction, range control, interference reduction, and quality-of-service enhancement. MiSer is presented as a simple application example for saving significant communication energy for 802.11h devices.