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Sensors 2016, 16(4), 425; doi:10.3390/s16040425

Capacity of Heterogeneous Mobile Wireless Networks with D-Delay Transmission Strategy

School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
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Author to whom correspondence should be addressed.
Academic Editors: Neal N. Xiong and Xuefeng Liang
Received: 28 December 2015 / Revised: 2 March 2016 / Accepted: 14 March 2016 / Published: 25 March 2016
(This article belongs to the Section Sensor Networks)
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Abstract

This paper investigates the capacity problem of heterogeneous wireless networks in mobility scenarios. A heterogeneous network model which consists of n normal nodes and m helping nodes is proposed. Moreover, we propose a D-delay transmission strategy to ensure that every packet can be delivered to its destination nodes with limited delay. Different from most existing network schemes, our network model has a novel two-tier architecture. The existence of helping nodes greatly improves the network capacity. Four types of mobile networks are studied in this paper: i.i.d. fast mobility model and slow mobility model in two-dimensional space, i.i.d. fast mobility model and slow mobility model in three-dimensional space. Using the virtual channel model, we present an intuitive analysis of the capacity of two-dimensional mobile networks and three-dimensional mobile networks, respectively. Given a delay constraint D, we derive the asymptotic expressions for the capacity of the four types of mobile networks. Furthermore, the impact of D and m to the capacity of the whole network is analyzed. Our findings provide great guidance for the future design of the next generation of networks. View Full-Text
Keywords: network capacity; heterogeneous; mobile networks; delay constraints network capacity; heterogeneous; mobile networks; delay constraints
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wu, F.; Zhu, J.; Xi, Z.; Gao, K. Capacity of Heterogeneous Mobile Wireless Networks with D-Delay Transmission Strategy. Sensors 2016, 16, 425.

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