Optimized Gateway Placement for Interference Cancellation in Transmit-Only LPWA Networks.
Optimized Gateway Placement for Interference Cancellation in Transmit-Only LPWA Networks.
复制标题
优化网关布局以消除仅传输 LPWA 网络中的干扰
DOI:
10.3390/s18113884
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发表时间:
2018-11-11
期刊:
影响因子:
--
通讯作者:
Nyengele G
中科院分区:
文献类型:
--
作者:
Tian H;Weitnauer MA;Nyengele G
We study the placement of gateways in a low-power wide-area sensor network, when the gateways perform interference cancellation and when the model of the residual error of interference cancellation is proportional to the power of the packet being canceled. For the case of two sensor nodes sending packets that collide, by which we mean overlap in time, we deduce a symmetric two-crescent region wherein a gateway can decode both collided packets. For a large network of many sensors and multiple gateways, we propose two greedy algorithms to optimize the locations of the gateways. Simulation results show that the gateway placements by our algorithms achieve lower average contention, which means higher packet delivery ratio in the same conditions, than when gateways are naively placed, for several area distributions of sensors.
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