TY - GEN
T1 - Collision detection based on transmission time information in IEEE 802.11 wireless LAN
AU - Yun, Ji Hoon
AU - Seo, Seung Woo
PY - 2006
Y1 - 2006
N2 - The standard exponential backoff mechanism and many proposed schemes for 802.11 wireless LAN behave adaptively to transmission failures, which occur by two causes: collision and channel noise. However, in 802.11 wireless LAN, a station cannot know the cause of a transmission failure, thus the adaptive schemes assume the ideal situation in which all transmission failures occur by one cause. Therefore, they may behave erroneously in the real world where transmission failures occur by both causes. In this paper, we propose a novel scheme to detect collision, which can help 802.11 and many adaptive schemes to differentiate the causes of transmission failures. In the proposed scheme, stations exchange transmission time information when transmission failures occur. The proposed scheme can detect collision accurately with low bandwidth overhead and it can be implemented without modifying the physical layer of existing wireless LAN devices. In addition, we model the bandwidth overhead of the proposed scheme mathematically. In the simulation, we show that the performance of the automatic rate fallback link adaptation algorithm can be improved by more than 400% with the proposed scheme when the number of stations in a basic service set is 10.
AB - The standard exponential backoff mechanism and many proposed schemes for 802.11 wireless LAN behave adaptively to transmission failures, which occur by two causes: collision and channel noise. However, in 802.11 wireless LAN, a station cannot know the cause of a transmission failure, thus the adaptive schemes assume the ideal situation in which all transmission failures occur by one cause. Therefore, they may behave erroneously in the real world where transmission failures occur by both causes. In this paper, we propose a novel scheme to detect collision, which can help 802.11 and many adaptive schemes to differentiate the causes of transmission failures. In the proposed scheme, stations exchange transmission time information when transmission failures occur. The proposed scheme can detect collision accurately with low bandwidth overhead and it can be implemented without modifying the physical layer of existing wireless LAN devices. In addition, we model the bandwidth overhead of the proposed scheme mathematically. In the simulation, we show that the performance of the automatic rate fallback link adaptation algorithm can be improved by more than 400% with the proposed scheme when the number of stations in a basic service set is 10.
KW - 802.11
KW - Collision detection
KW - Wireless LAN
UR - https://www.scopus.com/pages/publications/33750373188
U2 - 10.1109/PERCOMW.2006.29
DO - 10.1109/PERCOMW.2006.29
M3 - Conference contribution
AN - SCOPUS:33750373188
SN - 0769525202
SN - 9780769525204
T3 - Proceedings - Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2006
SP - 5
EP - 9
BT - Proceedings - Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2006
PB - IEEE Computer Society
T2 - 4th Annual IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2006
Y2 - 13 March 2006 through 17 March 2006
ER -