NDLI: Adapting IEEE 802.22 OFDMA system for P2PWRANs

Content Provider	IEEE Xplore Digital Library
Author	Huaizhou Shi Venkatesha Prasad, R. Rao, V.S. Niemegeers, I.G.M.M.
Copyright Year	2013
Description	Author affiliation: Embedded Software Group, Delft Univ. of Technol., Delft, Netherlands (Huaizhou Shi; Venkatesha Prasad, R.; Rao, V.S.; Niemegeers, I.G.M.M.)
Abstract	IEEE 802.22 is the first standard to utilize cognitive radio technology for wireless regional area networks (WRANs). It has adopted a cellular topology containing one base station (BS) and multiple customer premises equipments (CPEs) in a cell. It covers a very large area with radius ranging up to 100 km. Orthogonal frequency-division multiple access (OFDMA) system is employed and it is further slotted in time-domain. In one slot only one CPE can be allocated, and every intra-cell packet needs to be routed through the BS. This point-to-multi-point structure significantly limits the network capacity in the case of CPE-CPE communication, which is predicted to happen, and even the use of OFDMA does not help much. Therefore, peer-to-peer WRAN (P2PWRAN) has been proposed to support direct intra-cell communication in order to extend the network capacity. In this paper, the IEEE 802.22 OFDMA system is adapted to P2PWRAN to support direct CPE-CPE communications. The downstream burst allocation in P2PWRAN is similar to the OFDMA system of IEEE 802.16, which has been widely studied in the literature. Therefore, in this paper we look at the unexplored upstream burst allocation where slots can be reused among CPEs and the BS with power control mechanisms. We propose a burst allocation algorithm that maximizes the network capacity greedily. The algorithm is examined under various conditions such as, number of CPEs, size of requests, length of US subframes and type of requests (CPE-BS or CPE-BS). We also show that our algorithm performs better than the existing solutions.
Sponsorship	IEEE Commun. Soc.
Starting Page	974
Ending Page	979
File Size	593029
Page Count	6
File Format	PDF
ISBN	9781479913534
DOI	10.1109/GLOCOM.2013.6831200
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resource management IEEE 802.16 Standards Interference Cognitive radio Bandwidth Throughput burst allocation IEEE 802.22 WRAN OFDMA cognitive radio channel allocation
Content Type	Text
Resource Type	Article

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