A Feasible Power Saving Scheduling Approach in WiMAX 802.16e Networks

IEEE 802.16 is a novel broadband wireless access standard. Quality of service (QoS) guarantee and power saving are two important factor in IEEE 802.16 standard. Unsolicited grant service (UGS) is a constant bit rate QoS service and is defined in IEEE 802.16 standard. Power saving classes of type II (PSCs-II) is provided in IEEE 802.16 standard for repeat fixed active and sleep frames. However, IEEE 802.16 standard does not define how to develop an approach for power saving. This paper aims to provide a solution that provides a power saving schedule for one mobile station with multi UGS connections. The proposed approach is named Bucket Checker (BC) that follows the IEEE 802.16 standard definitions, UGS and PSCs-II. In addition, BC aims to provide a best power saving efficiency. By the numerical results, it shows that the proposed approach has better power saving efficiency and always follows QoS requirements. Key-Words: WiMAX, 802.16, power saving, schedule, UGS, PSCs