幀聚合對ieee802.11n吞吐量的影響

1、華中科技大學(xué)碩士學(xué)位論文幀聚合對IEEE802.11n吞吐量的影響姓名：祖馬特申請學(xué)位級別：碩士專業(yè)：信息與通信工程指導(dǎo)教師：桂良啟2010-05-20華 中 科 技 大 學(xué) 碩 士 學(xué) 位 論 文 II Abstract The IEEE 802.11a/b/g have been widely accepted as the standards for wireless local area networks (WLANs). Th

2、e recent IEEE 802.11n proposals aim at providing a physical layer transmission rate of up to 600 Mbps. However, to fully utilize this high data rate, the current IEEE 802.11 medium access control (MAC) needs to be enhanc

3、ed. In this thesis, we investigate the performance improvement of the MAC protocol by using the two frame aggregation techniques, namely A-MPDU (MAC Protocol Data Unit Aggregation) and A-MSDU (MAC Service Data Unit Aggre

4、gation). We first propose an analytical model to study the performance under uni-directional and bi-directional data transfer. Proposed model incorporates packet loss either from collisions or channel errors. Comparison

5、with simulation results show that the model is accurate in predicting the network throughput. We also propose an optimal frame size adaptation algorithm with A-MSDU under error-prone channels. Simulation results show tha

6、t the network throughput performance is significant improved when compared with both randomized and fixed frame aggregation algorithms. Key words: IEEE 802.11n standard, MAC layer, Frame aggregation, Performance evaluat