DocumentCode :
3394514
Title :
Aggressive fuzzy distributed dynamic channel assignment algorithm
Author :
Abdul-Haleem, M. ; Cheung, Kwan F. ; Chuang, Justin C I
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, Hong Kong
Volume :
1
fYear :
1995
fDate :
18-22 Jun 1995
Firstpage :
423
Abstract :
Constraint based channel assignment schemes often rely on crisp evaluations of radio interference constraints to determine if an open channel is feasible for assignment. Such an approach has been popularly adopted to formulate fixed channel assignment (FCA) schemes, dynamic channel assignment (DCA) schemes, and more recently distributed DCA (DDCA) schemes. DDCA schemes are localized DCA schemes where every cell site is responsible for channel assignments to calls generated within that cell. The paper introduces the aggressive fuzzy DDCA (AFDDCA) scheme in which the feasibility evaluation of the constraints is soft. The scheme is in the polite mode when a perfectly feasible channel exists, and in an aggressive mode otherwise. The aggressive policy is progressive. We demonstrate that, when the traffic is heavy, AFDDCA scheme can outperform globally optimal DCA in terms of spectral efficiency while the voice quality degradation is surprisingly mild
Keywords :
cellular radio; frequency allocation; fuzzy set theory; land mobile radio; radio spectrum management; radiofrequency interference; telecommunication traffic; aggressive fuzzy DDCA; aggressive fuzzy distributed dynamic channel assignment; aggressive mode; aggressive policy; cell site; cellular radio; constraint based channel assignment; distributed dynamic channel assignment algorithm; fixed channel assignment; heavy traffic; open channel; polite mode; progressive policy; radio interference constraints; spectral efficiency; voice quality degradation; Centralized control; Communication system traffic control; Computer networks; Constraint optimization; Degradation; Heuristic algorithms; Interference constraints; Mobile communication; Telecommunication traffic; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2486-2
Type :
conf
DOI :
10.1109/ICC.1995.525205
Filename :
525205
Link To Document :
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