NDLI: A scheduling algorithm for QoS support in OFDMA relay networks

Content Provider	IEEE Xplore Digital Library
Author	Jeong Ae Han Wha SookJeon
Copyright Year	2009
Description	Author affiliation: School of Elect. Eng. & Comput. Science, Seoul National University, Seoul, 151-742, Korea (Jeong Ae Han; Wha SookJeon)
Abstract	For supporting the high quality of service (QoS) in relay network, this paper proposes a new scheduling scheme that can be adopted in the orthogonal frequency division multiple access (OFDMA) cellular systems. In relay-aided network, a relay station should receive data from base station for forwarding data to its serving mobile stations. In addition, since the channel quality of each hop cannot be the same, the transmission time of each hop should be adjusted to harmonize the achievable transmission rate on each hop. In this paper, we first formulate the optimal scheduling problem and suggest a simple and fast heuristic scheme that provides enough subchannels to each hop for guaranteeing QoS and also adjusts the transmission time of each hop. With the proposed scheme, the QoS of each mobile station can be guaranteed and the channel utilization is increased. By using the simulation, we show that the throughput of the proposed scheme is higher than that of the scheme with fixed transmission time and the scheme not using relay stations. Moreover, since the proposed scheme not only allocates subchannels adequately but also adjusts the transmission time of each hop, the lowest outage rate can be achieved.
Starting Page	1427
Ending Page	1431
File Size	389032
Page Count	5
File Format	PDF
ISBN	9781424451227
e-ISBN	9781424451234
DOI	10.1109/PIMRC.2009.5450158
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-13
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scheduling algorithm Relays Optimal scheduling Quality of service Throughput Downlink Processor scheduling Frequency conversion Base stations Wireless communication
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in