A power saving scheme for integrated WLAN and cellular networks

Authors:
SuKyoung Lee
Affiliations:
Dept. of Computer Science, Yonsei University, Seoul, Korea
Venue:
ICCS'06 Proceedings of the 6th international conference on Computational Science - Volume Part II
Year:
2006

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Abstract

For the integration of WLAN and cellular networks, there have been recently several efforts to provide an optimized system design. However, it is noted from the existing schemes that in idle state, WLAN interface is supposed to be periodically turned on to receive periodic beacons from access points with cellular interface turned on at the same time for the paging from base station, resulting in significant power consumption. Therefore, in order to save the power consumption, when WLAN interface goes to idle state, we propose to turn off the WLAN interface without any periodic wake-up while at the same time, the existing paging of cellular networks are utilized. It is confirmed via both analytical modeling and simulation that the proposed scheme achieves better performance as compared to techniques currently adopted in WLAN in terms of power consumption.