NDLI: Robust multicast scheduling based on relaying, power control, and rate adaptation in wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Rubin, I. Hedayati, K.
Copyright Year	2011
Description	Author affiliation: Electrical Engineering Department, University of California (UCLA) (Rubin, I.; Hedayati, K.)
Abstract	In this paper, we present a class of heuristic algorithms for executing an adaptive power, adaptive rate TDMA schedule for multicasting messages from base stations to clients in a cellular system. Messages that are targeted for multicast over an area of operation are distributed across a backbone network to the base stations. Members of the multicast group are scattered across the area cells. The presented basic algorithm strives to achieve a high receive throughput rate. In each time slot within a multicast interval, a specific group of base stations is scheduled to transmit their multicast messages to their associated clients at specified transmit power and rate levels. To enhance the performance robustness of the system, under base station failure events, we extend the basic algorithm by introducing an opportunistic relay aided multicasting operation. Under the extended multicasting protocol, in addition to using base stations to multicast messages to nodes that are located closer to them, mobile stations can be elected to relay multicast messages that they have received directly from their base stations to peripheral nodes in their neighborhood. We show that this extended adaptive power and rate multicasting scheduling algorithm is effective in adapting to a failure of a base station node, limiting the performance degradation that is incurred. For an illustrative scenario, the extended relay aided scheme is noted to yield a throughput rate that is higher than that attained by a scheme that doesn't employ relay nodes by about 20%, while consuming less energy resources.
Starting Page	1116
Ending Page	1121
File Size	173511
Page Count	6
File Format	PDF
ISBN	9781467300391
e-ISBN	9781467300407
e-ISBN	9781467300384
DOI	10.1109/GLOCOMW.2011.6162352
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-12-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Base stations Schedules Interference Multicast communication Throughput Relays Signal to noise ratio
Content Type	Text
Resource Type	Article

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