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Capacity scaling laws of information dissemination modalities in wireless ad hoc networks

 

We present capacity scaling laws for random wireless ad hoc networks under ($n$, $m$, $k$)-cast formulation, where $n$, $m$, and $k$ denote the number of nodes in the network, the number of destinations for each communication group, and the actual number of communication group members that receive information (i. e., $kle mle n$), respectively and when nodes are endowed with multi-packet transmission (MPT) or multi-packet reception (MPR) capabilities. We show that $Thetaleft(T(n)sqrt{m}/k

ight)$, $Thetaleft(1/k

ight)$, and $Thetaleft(T^{2}(n)

ight)$ bits per second constitute a tight bound for the throughput capacity of random wireless ad hoc networks under the protocol model when $ m=Oleft(T^{-2}(n)

ight)$, $Omega(k)= T^{-2}(n)= O(m)$, and $k=Omegaleft(T^{-2}(n)

ight) $, respectively. This result applies to both MPR and MPT, where $T(n)$ denotes the transceiver range,

which depends on the complexity of the nodes. For the minimum transceiver range of $Thetaleft(sqrt{log n/n}

ight)$ to guarantee network connectivity, a gain of $Theta(log n)$ for ($n$, $m$, $k$)-casting is attained with either MPT or MPR compared to the capacity attained when transmitters and receivers can encode and decode at most one transmission at a time (i.e., point-to-point communication).

 
citation

Wang, Z.; Sadjadpour, H.; Garcia-Luna-Aceves, J. J. Capacity scaling laws of information dissemination modalities in wireless ad hoc networks. Forty-Sixth Annual Allerton Conference on Communication, Control and Computing; 2008 September 23-26, Monticello, Illinois, USA.