The fundamental role of hop distance in IEEE 802.11 multi-hop ad hoc networks
Author(s)
Author(s)
Gao, Y.
Lui, J. C. S.
Date Issued
2005
Publisher
IEEE
Related Publication(s)
Proceedings of the 13th IEEE International Conference on Network Protocols (ICNP)
Start page
75
End page
84
Abstract
In wireless networks, it is well understood what throughput can be achieved by nodes who can hear each other (i.e. nodes within a single cell). The effects of nodes beyond the sensing range (known as hidden nodes) on a sender are complicated and difficult to analyze. Consequently, how to analytically model multi-hop ad-hoc networks, specially networks based on the popular IEEE 802.11 standards remains largely open. In a recent paper, the throughput of a particular wireless network topology (linear network with a given number of hidden nodes) has been derived analytically. In this paper, we unify previous results on single-cell models, and results characterizing different types of hidden node interference and the analysis of C. Ng et al., (2004), to derive a general solution for throughput given a linear network of arbitrary density and transmission distance between source and destination nodes. An important insight from our model is that there is a certain transmission distance, which is less than the maximum transmission distance, that optimizes throughput in such networks. This result is verified using ns-2 simulation with both single as well as multiple flows.
SFU Affiliated Publication
No
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