Throughput Capacity of MANETs with Power Control and Packet Redundancy
Throughput Capacity of MANETs with Power Control and Packet Redundancy
复制标题
DOI：
10.1109/twc.2013.042413.121683
复制
发表时间：
2013-05
影响因子：
10.4
通讯作者：
Jiajia Liu;Xiaohong Jiang;Hiroki Nishiyama;N. Kato
中科院分区：
文献类型：
--
作者：
Jiajia Liu;Xiaohong Jiang;Hiroki Nishiyama;N. Kato
本文研究了移动自组网中每个节点的吞吐量，其中每个节点的传输功率可以被控制以适应特定的传输范围，并且采用具有有限冗余度f的广义两跳中继进行分组路由。基于自动反馈控制的概念和马尔可夫链模型，我们首先开发了一个通用的理论框架，充分描绘了复杂的数据包传输过程中的挑战性的移动自组网。在该框架的帮助下，我们能够推导出在固定的fmax和f设置下每个节点的确切吞吐量。基于新的吞吐量的结果，我们进一步探讨了最佳吞吐量容量为任何f，但一个固定的带宽，并确定相应的f的最佳设置，以实现它。这一结果有助于我们了解如何这样的最佳容量随带宽（从而传输功率），并找到这样的网络的最大可能的吞吐量容量为任何f和带宽。有趣的是，我们的研究结果表明，增加节点的传输功率提高了容量，这与固定网络中证明的相同。
This paper studies the exact per node throughput capacity of a MANET, where the transmission power of each node can be controlled to adapt to a specified transmission range υ and a generalized two-hop relay with limited packet redundancy f is adopted for packet routing. Based on the concept of automatic feedback control and the Markov chain model, we first develop a general theoretical framework to fully depict the complicated packet delivery process in the challenging MANET. With the help of the framework, we are then able to derive the exact per node throughput capacity for a fixed setting of both υ and f. Based on the new throughput result, we further explore the optimal throughput capacity for any f but a fixed υ and also determine the corresponding optimum setting of f to achieve it. This result helps us to understand how such optimal capacity varies with υ (and thus transmission power) and to find the maximum possible throughput capacity of such a network for any f and υ. Interestingly, our results show that increasing the transmission power of the nodes improves the capacity, which is the same as that proved in fixed networks.