Dynamic Spectrum Allocation: Spectrum Sharing in a Multiple Wireless Networks Environment
Date Issued
2007
Date
2007
Author(s)
Huang, Pei-Shu
DOI
en-US
Abstract
While more and more wireless applications and devices are developed, the demand of spectrum has been increasing rapidly. However, the spectrum resource of a popular band is often limited. If multiple network operators share the spectrum in an effective way, the radio resource should be better utilized. We have thus proposed an architecture for multiple networks to partially share the spectrum, in which an Arbiter is recommended to centrally manage the shared band of the spectrum, a Broker is used to handle requests for the shared spectrum after making a plan of frequency assignment, and the Base_Station_Radio_Resource_Manager is made to be responsible of the prediction of regional demand. We have developed a credit mechanism in such architecture for the Arbiter to distribute the shared radio resource among networks, and a greedy algorithm for Brokers to make a plan of frequency assignment within limited time. Moreover, the recommended form of negotiation between Arbiter and Brokers is simple and effective. Although Brokers do not need to know any information of other networks, they can still adjust their frequency assignments to improve the network performance. In a 2 networks scenario, the results show that the shared resource can be highly utilized so that the performance of both networks with spectrum sharing is better than that without spectrum sharing.
Subjects
動態分配頻譜
頻譜分享
無線通訊
dynamic spectrum allocation
spectrum sharing
wireless network
Type
thesis
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