A High Performance Dynamic Frame Granularity Control for IEEE 802.16e Networks

• Main Authors: Wei-Chen Chang, 張維禎
• Other Authors: Hsien-Ju Ko
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/55511686134674999838

碩士 === 亞洲大學 === 光電與通訊學系碩士班 === 98 === The IEEE 802.16e technology provides wide area, high speed and non-light-of-sight wireless network. The layer 2 technology of the IEEE 802.16 supports the QoS service with five service types. There are Unsolicited Grant Service (UGS), Real-time Polling Service (rtPS), Extended Real-time Polling Service (ertPS), Non-Real-time Polling (nrtPS) and Best-Effort Service (BE). While transmitting multimedia data, we usually use contention bandwidth to meet QoS requirements. To improve the multimedia communication performance, the bandwidth allocation problem of contention bandwidth is one of the keys to success. In this paper, we propose a dynamic frame granularity control for IEEE 802.16e networks, called DFC (Dynamic Frame Granularity Control), aiming to satisfy QoS guarantees while transmitting multimedia data. As a result, frame granularity of DFC is dynamically changed adapting to traffic fluctuation. The dynamic bandwidth allocation can reduce slot idle and collision occurrences and raise system effect. Simulation results demonstrate that DFC achieves superior performance with respect to throughput and delay.