Title :
Channel Quality-based Rate Adaptation Scheme for Wireless Networks
Author :
Lee, Sunhun ; Chung, Kwangsue
Author_Institution :
Kwangwoon Univ., Kwangwoon
Abstract :
IEEE 802.11 WLANs provide multiple transmission rates to improve the system throughput by adapting the transmission rate to the current wireless channel conditions. Many rate adaptation schemes have been proposed because IEEE 802.11 WLAN standard does not contain any specifications for the rate adaptation scheme. In this paper, in order to overcome limitations of the previous research, we propose a new channel quality-based rate adaptation scheme. The proposed rate adaptation scheme, appropriately adjusts the data transmission rate based on the estimated wireless channel conditions, specifically the measured RSSI at the sender-side. Moreover it continuously updates the thresholds for selecting the transmission rate and selectively enforces the RTS/CTS exchange to adapt the changes in the wireless channel conditions. Through the performance evaluations, we prove that our rate adaptation scheme overcomes the limitations of the previous research and improves the wireless link utilization.
Keywords :
IEEE standards; data communication; wireless LAN; wireless channels; IEEE 802.11 WLAN; RSSI; RTS/CTS exchange; channel quality; multiple transmission rates; rate adaptation scheme; wireless channel conditions; wireless link utilization; wireless networks; Collision avoidance; Data communication; Modulation coding; Multiaccess communication; Physical layer; Receivers; Throughput; Wireless LAN; Wireless networks; Wireless sensor networks;
Conference_Titel :
Information Networking, 2008. ICOIN 2008. International Conference on
Conference_Location :
Busan
Print_ISBN :
978-89-960761-1-7
Electronic_ISBN :
1976-7684
DOI :
10.1109/ICOIN.2008.4472758