標題: Performance analysis of greedy fast-shift block acknowledgement for high-throughput WLANs
作者: Liu, Wen-Jiunn
Huang, Chao-Hua
Feng, Kai-Ten
Tseng, Po-Hsuan
電機資訊學士班
Undergraduate Honors Program of Electrical Engineering and Computer Science
關鍵字: Wireless local area network;IEEE 802.11n;Medium access control;Block acknowledgement
公開日期: 1-十一月-2014
摘要: The techniques of frame aggregation and block acknowledgement (ACK) are utilized in the IEEE 802.11n standard for achieving high throughput performance from the medium access control perspective. Conventional greedy scheme for block ACK adopts the transmitter-defined starting sequence number (SSN) to construct the ACK window for recognizing the correctness of data packets. However, there exists correctly received packets that lie outside of the ACK window which will unavoidably be retransmitted by adopting the conventional scheme. In this paper, a greedy fast-shift (GFS) block ACK mechanism is proposed to provide the receiver-defined SSN, which can both implicitly acknowledge the correctly received packets before the SSN and explicitly identify the correctness information for the packets after the SSN. In order to evaluate the effectiveness of the GFS scheme, the analytical models for these two mechanisms are proposed based on the window utilization. Compared to the conventional greedy scheme, it is observed from the simulation results that the proposed GFS method can provide better performance owing to its fast-shift behavior on ACK window.
URI: http://dx.doi.org/10.1007/s11276-014-0752-8
http://hdl.handle.net/11536/123956
ISSN: 1022-0038
DOI: 10.1007/s11276-014-0752-8
期刊: WIRELESS NETWORKS
Volume: 20
起始頁: 2503
結束頁: 2519
顯示於類別:期刊論文


文件中的檔案:

  1. 000343925600023.pdf