Achieving scalable performance in large-scale IEEE 802.11 wireless networks

@inproceedings{citeulike:430103, abstract = {In large-scale wireless networks, interference among nodes limits channel spatial re-use and is a main hurdle for scalable performance. There are two types of interference: (1) physical interference due to the receiver's inability to decode a signal when the power received from other signals is large; (2) protocol interference imposed by the specific multi-access protocol being used. The paper models both interference types in terms of a set of inequality constraints for the IEEE 802.11 CSMA/CA protocol. Based on the inequalities, we investigate the impact of some parameters (basic-rate, data-rate, and physical-preamble-rate) on channel spatial re-use. Regardless of the parameter settings, the total capacity in an 802.11 network reaches a ceiling as the number of nodes, n, increases. We identify the fundamental causes for the non-scalable performance, and show that 802.11 can be made to be scalable with a simple modification, achieving O(n) throughput without adaptive power control. We believe that this is the first paper to demonstrate this.}, author = {Ng, Ping C. and Liew, Soung C. and Jiang, Li B. }, citeulike-article-id = {430103}, journal = {Wireless Communications and Networking Conference, 2005 IEEE}, keywords = {80211, csma}, pages = {69--74 Vol. 1}, posted-at = {2005-12-07 20:08:16}, priority = {2}, title = {Achieving scalable performance in large-scale IEEE 802.11 wireless networks}, url = {http://ieeexplore.ieee.org/xpls/abs\_all.jsp?arnumber=1424478}, volume = {1}, year = {2005} }

TY - CONF ID - citeulike:430103 L3 - citeulike-article-id:430103 TI - Achieving scalable performance in large-scale IEEE 802.11 wireless networks JF - Wireless Communications and Networking Conference, 2005 IEEE VL - 1 SP - 69 EP - 74 Vol. 1 N2 - In large-scale wireless networks, interference among nodes limits channel spatial re-use and is a main hurdle for scalable performance. There are two types of interference: (1) physical interference due to the receiver's inability to decode a signal when the power received from other signals is large; (2) protocol interference imposed by the specific multi-access protocol being used. The paper models both interference types in terms of a set of inequality constraints for the IEEE 802.11 CSMA/CA protocol. Based on the inequalities, we investigate the impact of some parameters (basic-rate, data-rate, and physical-preamble-rate) on channel spatial re-use. Regardless of the parameter settings, the total capacity in an 802.11 network reaches a ceiling as the number of nodes, n, increases. We identify the fundamental causes for the non-scalable performance, and show that 802.11 can be made to be scalable with a simple modification, achieving O(n) throughput without adaptive power control. We believe that this is the first paper to demonstrate this. KW - 80211 KW - csma AU - Ng, Ping AU - Liew, Soung AU - Jiang, Li PY - 2005/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1424478 ER -