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Adaptive dissemination of data in time-critical asymmetric communication environments

DSpace at IIT Bombay

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Title Adaptive dissemination of data in time-critical asymmetric communication environments
 
Creator FERNANDEZ, J
RAMAMRITHAM, K
 
Subject broadcast data dissemination
scheduling
time-critical data
asymmetric communication
push-based techniques
 
Description The proliferation of new data-intensive applications in asymmetric communication environments has led to an increasing interest in the development of push-based techniques, in which the information is broadcast to a large population of clients in order to achieve the most efficient use of the limited server and communication resources. It is important to note that quite often the data that is broadcast is time-critical in nature. Most of the related current research focuses on a pure push-based approach ( Broadcast Disks model), where the transmission of data is done without allowing explicit requests from the users. More recently, some bidirectional models incorporating a low-capacity uplink channel have been proposed in order to increase the functionality of the Broadcast Disks model. However, the impact of integration of the uplink channel has been investigated using only static client profiles or ignoring the existence of time-sensitive data. None of the existing models integrates all the characteristics needed to perform effectively in a real-world, dynamic time-critical asymmetric communication environment. In this paper we present an adaptive data dissemination model and the associated on-line scheduling algorithms. These improve the functionality and performance of bidirectional broadcast models, maximizing the total number of satisfied users in asymmetric communication environments with dynamic client profiles and time requirements ( e. g., mobile systems). This is achieved by means of dynamic adaptation of the broadcast program to the needs of the users, taking into account the bandwidth constraints inherent in asymmetric communication environments and the deadline requirements of the user requests. Performance is evaluated by simulation of a real-time asymmetric communication environment.
 
Publisher KLUWER ACADEMIC PUBL
 
Date 2011-08-17T03:22:27Z
2011-12-26T12:55:18Z
2011-12-27T05:44:05Z
2011-08-17T03:22:27Z
2011-12-26T12:55:18Z
2011-12-27T05:44:05Z
2004
 
Type Article
 
Identifier MOBILE NETWORKS & APPLICATIONS, 9(5), 491-505
1383-469X
http://dx.doi.org/10.1023/B:MONE.0000034703.41393.aa
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9723
http://hdl.handle.net/10054/9723
 
Language en