A research of handoff technology with power preference in WiFi networks

Resent years, with the rapid development of embedded device industry, embedded mobile devices have been popular. The power of these devices is supplied by batteries, but battery capacity is limited by its volume and weight. So the power problem of embedded mobile devices has been a research focus. This paper analyzes the power consumption when embedded devices make handoff (switch from one network to another) in WiFi networks and propose the Power Preference Handoff Technology (PPHT) as an optimization scheme. According to the experiment results, we demonstrate that embedded mobile devices making frequent handoff in WiFi networks will obviously increase the power consumption, and the PPHT scheme can reduce substantial power consumption.