Performance Analysis of NAV Based Contention Window in IEEE 802.11 LAN

被引：0
作者：
Choi, Seung-Sik [1 ]
机构：
[1] Univ Incheon, Inchon 406772, South Korea
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2014年 / E97A卷 / 01期
关键词：
IEEE802.11; LAN; contention window; backoff; CSMA/CA; OPTIMIZATION; PROTOCOL; CHANNEL;
D O I：
10.1587/transfun.E97.A.436
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In IEEE 802.11 standard, the contention window (CW) sizes are not efficient because it does not consider the system load. There has been several mechanisms to achieve the maximum throughput by the optimal CW. But some parameters such as the number of stations and system utilization are difficult to measure in WLAN systems. To solve this problem, we use the network allocation vector (NAV) which represents the transmission of other stations. This parameter can be used to measure the system load. Thus, the CW sizes can be estimated by the system load. In this paper, we derive the analytical model for the optimal CW sizes and the maximum throughput using the NAV and show the relationships between the CW sizes, the throughput and the NAV.
引用
收藏
页码：436 / 439
页数：4
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