CSDL Home W WOWMOM 2005 Proceedings. Sixth IEEE International Symposium on a World of Wireless Mobile and Multimedia Networks. WoWMoM 2005
June 16, 2005 to June 16, 2005
Manoj K. Panda , Satyam Computer Services Ltd.
Anurag Kumar , Indian Institute of Science
S. H. Srinivasan , Satyam Computer Services Ltd.
IEEE 802.11 wireless local area networks that span large buildings or campuses must comprise multiple cells, several of which must necessarily be cochannel cells. It can be shown that in such multicell networks, typically, the radio ranges of cochannel cells overlap. The concern in this paper is to study the saturation throughput performance of two cochannel cells with critical overlap, i.e., their interference ranges completely overlap but no node in either cell can decode any transmissions from the other cell. We identify that the difference between the two MAC parameters, EIFS and DIFS is a key issue and incorporate this difference as a parameter into an analytical model. The model yields a fixed point equation that yields an approximation to the saturation throughputs of the two cells. The results from the analysis are validated against ns-2 simulations. We find that with EIFS>DIFS there is substantial temporal unfairness in the channel access between the two cells, but, because of fewer collisions, the critical overlap configuration has higher per cell throughput than if the cells? decoding ranges overlapped.
Manoj K. Panda, Anurag Kumar, S. H. Srinivasan, "Saturation Throughput Analysis of a System of Interfering IEEE 802.11 WLANs", WOWMOM, 2005, Proceedings. Sixth IEEE International Symposium on a World of Wireless Mobile and Multimedia Networks. WoWMoM 2005, Proceedings. Sixth IEEE International Symposium on a World of Wireless Mobile and Multimedia Networks. WoWMoM 2005 2005, pp. 98-108, doi:10.1109/WOWMOM.2005.91