On the end-to-end delay of interference-limited mobile multihop networks
On the end-to-end delay of interference-limited mobile multihop networks
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DOI：
10.1109/icc.2016.7510975
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发表时间：
2016-05
期刊：
影响因子：
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通讯作者：
D. Hu;Jingxian Wu;P. Fan
中科院分区：
文献类型：
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作者：
D. Hu;Jingxian Wu;P. Fan
本文研究了一种具有移动中继的线性多跳网络的端到端时延问题。该网络运行在一个限制干扰的环境中，其中干扰信号来自二维平面上的位置遵循泊松点过程（PPP）的节点。由于节点的移动性，中继节点遵循随机路点移动性（RWPM）模型，假设中继节点在源-目的线上随机移动。基于RWPM的统计特性，首先分析了移动中继节点间距离的概率分布。然后，将结果用于推导给定源-目标对之间端到端延迟的精确解析表达式。分析结果明确量化了几个系统参数对端到端延迟的影响，包括源-目的距离、中继数量、传播参数和干扰源密度等。得到了使端到端时延最小的最佳中继数。分析和仿真结果表明，中继节点的移动性可以降低端到端时延。
In this paper, we study the end-to-end delay of a linear multihop network with mobile relays located on the line connecting the source-destination pair. The network operates in an interference-limited environment, where the interfering signals are from nodes with positions following the Poisson point process (PPP) on a two-dimensional plane. Due to node mobilities, the relay nodes are assumed to move randomly on the source-destination line by following a random waypoint mobility (RWPM) model. Based on the statistical properties of RWPM, we first analyze the probability distributions of the inter-node distance of the mobile relays. The results are then used to derive the exact analytical expressions of the end-to-end delay between a given source-destination pair. The analytical results explicitly quantify the impacts of several system parameters on the end-to-end delay, including the source-destination distance, the number of relays, the propagation parameters, and the density of interferers, etc. The optimum number of relays that can minimize the end-to-end delay is obtained. Both analytical and simulation results show that the mobility of the relay nodes can decrease the end-to-end delay.