NDLI: Dynamic Bandwidth Allocation for Low Power Devices With Random Connectivity

Content Provider	IEEE Xplore Digital Library
Author	Ehsan, N. Mingyan Liu
Copyright Year	2005
Description	Author affiliation: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor nehsan@umich.edu (Ehsan, N.)
Abstract	In this paper we consider the bandwidth allocation problem where multiple low power wireless devices share a common time-slotted channel for transmitting to a single server. Due to energy constraints, these devices alternate between common active and inactive periods, the former typically much smaller than the latter. At the beginning of each active period the server decides which user(s) can access the common channel. This decision is based on the knowledge of the current backlog and connectivity of each queue. In each time slot an active user may or may not be connected to the server. If a user is connected to the server, it can transmit with a certain success probability. Arrivals are arbitrary and there is a cost for holding a packet in the queue. Different queues have different packet holding costs leading to differentiated services. We consider the problem of minimizing the total discounted cost over a finite or infinite horizon and provide sufficient conditions under which a greedy policy is optimal. We consider two connectivity models: (1) there is no information about connectivity statistics, and (2) connectivity probability is independent from one time slot to the other (memoryless channel). We show that in each of these cases it is optimal to serve the user with the highest one step reward (smallest one step cost) if this gain is sufficiently larger than that from serving the other users. The sufficient condition is shown to be asymptotically tight in special cases.
Starting Page	6034
Ending Page	6039
File Size	166684
Page Count	6
File Format	PDF
ISBN	0780395670
DOI	10.1109/CDC.2005.1583127
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-12-15
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	IEEE/EUCA
Subject Keyword	Channel allocation Infinite horizon File servers Cost function Sufficient conditions Wireless sensor networks Statistics Probability Memoryless systems Delay systems optimal control Resource allocation low-power devices stochastic systems
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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