A Clustering Technique of Load-Based Power Saving in the IEEE 802.16e Network
Previous works in IEEE 802.16e power saving mainly focused on standard Type I or Type II power saving class. The limitation of adopting Type I or Type II was discussed in the authors' previous work, and the idea of applying traffic modeling and measurement called Load-Based Power Saving (LBPS) was proposed. The base station in LBPS measures the traffic load and estimates the sleep window size for mobile subscriber stations by setting a threshold for data accumulation. Based on the previously proposed protocol LBPS-Aggr, an enhanced protocol called LBPS-Split is proposed in the paper, in which the MSSs are clustered in the schedule for better power saving performance.