DocumentCode :
2979926
Title :
Quality-of-information aware transmission policies with time-varying links
Author :
Ciftcioglu, Ertugrul Necdet ; Yener, Aylin
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
fYear :
2011
fDate :
7-10 Nov. 2011
Firstpage :
230
Lastpage :
235
Abstract :
We consider Quality-of-Information (QoI) aware transmission policies in the presence of time-varying links in a mobile ad hoc network. QoI, tailored for military tactical networks, is defined by a set of attributes relevant to the application. Time-varying nature of links in practical networks leads to uncertainty in evaluating QoI utility to be delivered to end users. This delivered-QoI utility is a function of both attributes provided by the source input, as a result of observing certain events, and the channel induced attributes that impact the QoI obtained at the destination. The goal of this paper is to attain the maximum QoI output utility, termed as Operational Information Content Capacity (OICC) of a network. First, for a single link, we demonstrate that the optimal decision structure for transmission is threshold-based. Next, we consider multihop relay networks. For the basic model of a two-hop relay network, we propose transmission scheduling and link activation schemes based on approximate dynamic programming methods. Furthermore, we exploit time-variations of links by opportunistic scheduling by employing buffers at the relay node. We demonstrate that significant gains in QoI output utility are gained by opportunistic scheduling algorithms.
Keywords :
approximation theory; decision theory; dynamic programming; military communication; mobile ad hoc networks; radio links; scheduling; approximate dynamic programming method; link activation scheme; military tactical network; mobile ad hoc network; multihop relay network; operational information content capacity; opportunistic scheduling; optimal decision structure; quality-of-information aware transmission policy; time-varying links; transmission scheduling; two-hop relay network; Accuracy; Degradation; Delay; Joints; Relays; Resource management;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
MILITARY COMMUNICATIONS CONFERENCE, 2011 - MILCOM 2011
Conference_Location :
Baltimore, MD
ISSN :
2155-7578
Print_ISBN :
978-1-4673-0079-7
Type :
conf
DOI :
10.1109/MILCOM.2011.6127666
Filename :
6127666
Link To Document :
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