Research on Application of Wireless Bridge Technology in the Smart Grid

Introduction

Wireless bridge is wireless network bridge, which uses wireless transmission to achieve in two or more networks to build the bridge of communication (Tian, 2013; Zou, 2010), the communication technology abiding by the WLAN 802.11b / a / g / n Protocol.

In the process of building smart grid, the WLAN networking sometimes encounters sites with no fiber transmission resources. The user data after through the AP (Access Point) cannot converge to the backbone network, now we can use wireless bridge technology to bridge optical fiber resource site and the site optical fiber unable to reach, in order to enhance the smart grid edge access capability (Zou, Wang, Wang & Wang, 2016). Currently wireless bridge used in the industries such as Transport, Government, Military, Petro China, Police etc.

Wireless bridge uses the IEEE 802.11 series protocol, wireless bridge technology experienced 802.11b, 802.11g, 802.11a, until now 802.11n (Zhang, Xiao & Yan, 2011). 802.11b can usually provide 4Mbps to 6Mbps of actual data rate, and 802.11g, 802.11a standard wireless bridge has 54Mbps transmission bandwidth, the majority of 802.11n wireless bridge can reach 150Mbps or more transmission rate, as shown in Table 1.