NDLI: A selfishness-aware coexistence scheme for 802.22 and 802.11af networks

Content Provider	IEEE Xplore Digital Library
Author	Shuai Yuan Lei Li Chunxiao Chigan
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Univ. of Massachusetts Lowell, Lowell, MA, USA (Shuai Yuan; Lei Li; Chunxiao Chigan)
Abstract	We investigate the coexistence issue between 802.22 and 802.11af networks over the TV White Space (TVWS). The coexistence scheme is vulnerable to selfish attacks. In this paper, the scenario of selfish attack wherein 802.22 subscribers intend to occupy the allocated spectrum selfishly is studied. Consequently, 802.11af users have less opportunity to access the spectrum, which leads to low overall spectral efficiency. We propose a centralized coexistence framework wherein the spectrum coordinator is in charge of allocating spectrum resources. The objective of our coexistence mechanism is to maximize the overall spectral efficiency. Our coexistence problem is modeled as 0-1 Multiple Knapsack Problem. This problem is solved by combining bandwidth allocation and channel allocation. In addition, the fairness of each subnetwork is considered in the design of bandwidth allocation. As a result, the selfish attack in the coexistence scheme is defeated. Simulation results demonstrate that the overall system spectral efficiency is significantly improved compared to existing coexistence schemes.
Starting Page	194
Ending Page	199
File Size	505884
Page Count	6
File Format	PDF
ISBN	9781479987603
DOI	10.1109/WCNCW.2015.7122553
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-03-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Spectral efficiency Conferences Bandwidth Channel allocation Approximation algorithms Sensors Coexistence Bandwidth allocation Resource management Spectrum coordinator
Content Type	Text
Resource Type	Article

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