DSpace at IIT Bombay >
IITB Publications >
Proceedings papers >
Please use this identifier to cite or link to this item:
|Title: ||On optimal transmission range for multihop cellular networks|
|Authors: ||OJHA, RS|
|Keywords: ||packet radio networks|
ad hoc networks
|Issue Date: ||2008|
|Citation: ||GLOBECOM 2008 - 2008 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE,|
|Abstract: ||In this paper analytical relationship between transmission range and the network connectivity is obtained as a function of number of nodes for CDMA based Multihop Cellular Network (MCN). We show that for a network of n uniformly distributed nodes in a single cell of unit radius, the transmission range r should be sufficiently larger than root 2 ln n/n-1 to achieve asymptotic full connectivity. The distribution of the nodes may not be uniform in case of mobility. In such case a mobility model dependent lower bound on transmission range is obtained. We show that for RWP model the lower bound for the nodes which lie completely inside the cell is same as the corresponding uniform node distribution case. However, for nodes on boundary the transmission range lower bound is (3)root ln n/n which is larger than the corresponding uniform node distribution case. Our findings show that more transmission range is required at the boundary to establish better connectivity and hence a variable transmission range control mechanism is necessary. In addition to lower bound, we also propose a method to choose the optimal value of transmission range using a scheduling mechanism and ensure that the optimal value is always greater than the lower bound. Thus obtained transmission range could be used to select the transmission power of the nodes in a meaningful way and hence the nodes' isolation could be avoided and the spectral efficiency can be increased. We demonstrate empirically, that the proposed transmission range control mechanism increases the network connectivity as well as spatial reuse of the resources.|
|Appears in Collections:||Proceedings papers|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.