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2007

Greedy online frequency allocation in cellular networks

9 years 5 months ago
Greedy online frequency allocation in cellular networks
The online frequency allocation problem for cellular networks has been well studied in these years. Given a mobile telephone network, whose geographical coverage area is divided into cells, phone calls are served by assigning frequencies to them, and no two calls emanating from the same or neighboring cells are assigned the same frequency. Assuming an online setting that the calls arrive one by one, the problem is to minimize the span of the frequencies used. In this paper, we study the greedy approach for the online frequency allocation problem, which assigns the minimal available frequency to a new call so that the call does not interfere with calls of the same cell or neighboring cells. If the calls have infinite duration, the competitive ratio of greedy algorithm has a tight upper bound of 17/7, which closes the gap of [17/7, 2.5) in [3]. If the calls have finite duration, i.e., each call may be terminated at some time, the competitive ratio of the greedy algorithm has a tight u...
Joseph Wun-Tat Chan, Francis Y. L. Chin, Deshi Ye,
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2007
Where IPL
Authors Joseph Wun-Tat Chan, Francis Y. L. Chin, Deshi Ye, Yong Zhang, Hong Zhu
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