A Dynamic Power Scheme for Energy Efficiency and Throughput Enhancement in 802.16j MMR Networks
Date Issued
2009
Date
2009
Author(s)
Yu, Kai-Chun
Abstract
The IEEE 802.16 and its mobile service enhancement 802.16e, have well defined specifications for legacy single-hop networks. Although it matured gradually, there are still many potential problems. With the longer distance, the throughput decreases obviously due to the significant loss of signal strength along the propagation path. Because of this, IEEE 802.16j made the way by using intermediate relay stations based on 802.16e. This enhances the system throughput and reduces the overall cost to build WiMAX system. Furthermore, it increases flexibility in system topology and it is downward compatible with 802.16e.The base stations of 802.16j provide a large coverage. This makes larger distance between transmitters and receivers, resulting in the need of higher power level to maintain the same connection quality. However, mobile devices usually use lower power to save the use of electricity due to the limitation of battery capacity. In this thesis, we use SUI model which is developed under IEEE 802.16 Working Group to calculate the pass loss in different conditions. We simulate the data rates corresponding to the changes in transmission power and positions of RSs.
Subjects
Throughput Enhancement
Power Saving
SDGs
Type
thesis
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