Record Details

A complete characterization of an optimal timer based selection scheme

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title A complete characterization of an optimal timer based selection scheme
 
Creator SHAH, V
MEHTA, NB
YIM, R
 
Subject cooperative networks
access channels
diversity
maximization
amplify
single
relay
 
Description Timer-based mechanisms are often used in several wireless systems to help a given (sink) node select the best helper node among many available nodes. Specifically, a node transmits a packet when its timer expires, and the timer value is a function of its local suitability metric. In practice, the best node gets selected successfully only if no other node's timer expires within a 'vulnerability' window after its timer expiry. In this paper, we provide a complete closed-form characterization of the optimal metric-to-timer mapping that maximizes the probability of success for any probability distribution function of the metric. The optimal scheme is scalable, distributed, and much better than the popular inverse metric timer mapping. We also develop an asymptotic characterization of the optimal scheme that is elegant and insightful, and accurate even for a small number of nodes.
 
Publisher IEEE
 
Date 2011-10-28T00:35:23Z
2011-12-15T09:12:51Z
2011-10-28T00:35:23Z
2011-12-15T09:12:51Z
2010
 
Type Proceedings Paper
 
Identifier 2010 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS - ICC 2010,
978-1-4244-6404-3
1550-3607
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16461
http://hdl.handle.net/100/2937
 
Source 2010 IEEE International Conference on Communications,Cape Town, SOUTH AFRICA,MAY 23-27, 2010
 
Language English