QoS-based Opportunistic Scheduling Algorithm for Mixed-traffic Environment

• Main Authors: Chan-Jui Chian, 江昌叡
• Other Authors: Ching-Yao Huang
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/81576790121653295406

碩士 === 國立交通大學 === 電子工程系所 === 95 === The 802.16e standard is standardized and soon be one of the popular technique which will be used in the future wireless communication environment. To meet the future trend, there must be some way to deal with mix-traffic environment to support their different QoS requirement. Besides, utilize the bandwidth efficiently is important to enhance system performance. In this thesis, it gives a QoS definition to non-real-time service, soft delay bound. Using this concept system can easily handle the mix-traffic environment to meet their QoS requirement. Besides, we propose a new algorithm, QoS-based opportunistic algorithm, to utilize the bandwidth efficiently but still maintain the QoS requirement of users, even in the mix-traffic environment. The designing concept uses EDF, opportunistic scheduling, and the mechanism to divide packet into different groups based on their delay bound to avoid packets conflict in one frame. The algorithm will be implemented in 802.16e system.