适用于IEEE 802.11ac协议的高效速率自适应算法

doi:10.3969/j.issn.1001-2400.2016.01.022

Abstract

Abstract:

Rate adaptation, which is one indispensable mechanism for the multi-rate wireless local area network (WLAN), is critical to the system performance. In this paper, we propose a highly efficient rate adaptation algorithm for IEEE 802.11ac based on the receiver's information feedback without modifying the MAC frame format. The basic idea is that the RTS frame is used to estimate the channel condition accurately, and then the CTS frame is sent back with the information of the chosen rate in a scrambling sequence. Moreover, according to the probability of the error received, the threshold of rate selection can be adaptively adjusted, thus further enhancing the stability of system performance. Simulation and verification by NS-3 show that the throughput performance of this algorithm outperforms that of three well-known rate adaptation solutions (AARF, ONOE, and Minstrel) in different channel environments.

Key words: 802.11ac, rate adaptation, channel condition, threshold

CLC Number:

TN925+.93

PANG Zhipeng;WU Bin;YE Tianchun. Highly efficient rate adaptation algorithm for IEEE 802.11ac[J].J4, 2016, 43(1): 120-126.

References

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Highly efficient rate adaptation algorithm for IEEE 802.11ac

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