Clean-Air Spatial Reuse and Spectral Efficiency Analysis for Wireless Mesh Networks
Date Issued
2007
Date
2007
Author(s)
Lin, Yuan-Chieh
DOI
en-US
Abstract
The wireless mesh network is expected to provide large transmission capacity in order to serve as a complementary broadband wireless access technology. The interference plays an important role to the network capacity throughput of wireless mesh networks because when there are multiple concurrent wireless transmissions in a mesh network, the interference caused by the broadcast nature of wireless transmissions decreases the sustainable spectral efficiency (transmission speed) of each individual transmission.
For a wireless mesh network, the network capacity throughput is determined by two factors: the individual transmission spectral efficiency and the number of concurrent transmissions. Therefore, the best way to increase the network capacity throughput is to increase both the individual transmission spectral efficiency as well as the number of concurrent transmissions. However, if we increase the individual transmission spectral efficiency, inevitably we have to reduce the number of concurrent transmission because we must keep interference low to make higher spectral efficiency feasible. Thus the choice between (1) increasing the transmission spectral efficiency and (2) increasing the number of concurrent transmissions is a trade-off and is critical to the network capacity throughput.
In this paper, we explore the tradeoff between these two choices in a TDMA (time division multiple access) based distributed data access scheduler wireless mesh network with physical interference model and find the optimal design that achieves highest network capacity throughput.
Subjects
網路傳輸容量
IEEE 802.16
WiMAX
無線網狀網路
實體干擾模型
Network Capacity Throughput
Wireless Mesh Networks
Physical Interference Model
Type
other
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