Exact throughput capacity in MANETs with directional antenna and transmission power constraint
Exact throughput capacity in MANETs with directional antenna and transmission power constraint
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DOI：
10.1109/apcc.2012.6388179
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Yin Chen;Jiajia Liu;Xiaohong Jiang;O. Takahashi;N. Shiratori
中科院分区：
文献类型：
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作者：
Yin Chen;Jiajia Liu;Xiaohong Jiang;O. Takahashi;N. Shiratori
移动的自组织网络（adhoc network，MANNETWORK）应用的一个主要障碍是缺乏一个通用的吞吐量容量理论。现有的工作主要集中在探索的顺序感缩放律的吞吐量容量在移动自组网与全向天线或静态ad hoc网络与定向天线。虽然顺序感的结果可以帮助我们理解一般的缩放行为，它告诉我们的确切吞吐量的能力很少。现有工作的另一个局限是，在很大程度上忽略了传输功率约束对吞吐量容量的影响。然而，在大多数MANET应用中，移动的节点通常由电池供电，并且具有有限的传输功率。本文研究了具有定向天线和发射功率约束的移动自组网的精确吞吐量问题，其中分组路由采用具有有限分组冗余的广义两跳中继算法。对于给定的发射功率约束，我们首先开发了一个模型来映射的全向传输范围的方向之一。然后，我们探讨了准确的吞吐量容量下定向传输和基于组的调度。最后，数值研究证明了这些模型的有效性，并验证了我们的理论结果。
A major obstacle stunting the application of mobile ad hoc networks (MANETs) is the lack of a general throughput capacity theory for such networks. Available works in this area mainly focused on exploring the order sense scaling laws of throughput capacity in MANETs with omnidirectional antennas or that of static ad hoc networks with directional antennas. Although the order sense results can help us to understand the general scaling behaviors, it tells us little about the exact throughput capacity. Another limitation of available works is that the impact of transmission power constraint on the throughput capacity is largely neglected. In most MANET applications, however, the mobile nodes are usually powered by batteries and have limited transmission power. In this paper, we study the exact throughput capacity of MANETs with directional antenna and transmission power constraint, where a generalized twohop relay algorithm with limited packet redundancy is adopted for packet routing. For given transmission power constraint, we first develop a model to map the omnidirectional transmission range to that of the directional one. We then explore the exact throughput capacity under directional transmission and group-based scheduling. Finally, numerical studies are provided to demonstrate the efficiency of these models and validate our theoretical results.