NDLI: Capacity bounds for three classes of wireless networks: asymmetric, cluster, and hybrid

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Capacity bounds for three classes of wireless networks: asymmetric, cluster, and hybrid

Content Provider	ACM Digital Library
Author	Toumpis, Stavros
Abstract	We present capacity results for three classes of wireless ad hoc networks, using a general framework that allows their unified treatment. The results hold with probability going to 1 as the number of nodes in the network approaches infinity, and under a general model for channel fading.We first study asymmetric networks that consist of n source nodes and around $n^{d}$ destination nodes, communicating over a wireless channel. Each source node creates data traffic that is directed to a destination node chosen at random. When ½ ‹ d ‹ 1, an aggregate throughput that increases with n as $n^{½}$ is achievable. If, however, 0 ‹ d ‹ ½, bottlenecks are formed and the aggregate throughput can not increase faster than $n^{d}.We$ also consider cluster networks, that consist of n client nodes and around $n^{d}$ cluster heads, communicating over a wireless channel. Each of the clients wants to communicate with one of the cluster heads, but the particular choice of cluster head is not important. In this setting, the maximum aggregate throughput is on the order of $n^{d},$ and it can be achieved with no transmissions taking place between client nodes.We conclude with the study of hybrid networks. These consist of n wireless nodes and around $n^{d}$ access points. The access points are equipped with wireless transceivers, but are also connected with each other through an independent network of infinite capacity. Their only task is to support the operation of the wireless nodes. When ½ ‹ d ‹ 1, an aggregate throughput on the order of $n^{d}$ is achievable, through the use of the infrastructure. If, however, 0 ‹ d ‹ ½, using the infrastructure offers no significant gain, and the wireless nodes can achieve an aggregate throughput on the order of $n^{½}$ by using the wireless medium only.
Starting Page	133
Ending Page	144
Page Count	12
File Format	PDF
ISBN	1581138490
DOI	10.1145/989459.989477
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2004-05-24
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Infrastructure support Capacity Cluster networks Wireless access Hybrid networks Asymmetric traffic Mobile ad hoc networks
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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