Title :
Adaptive channel borrowing assignment for TDMA cellular mobile networks
Author_Institution :
Dept. of Electron. Eng., Kasem Bundit Univ., Bangkok, Thailand
Abstract :
This paper proposes adaptive channel borrowing assignment for TDMA cellular mobile networks in order to reduce the overall call blocking rate. This scheme is based on the cell´s traffic situation by first choosing cell with the lowest traffic in the same cluster and then choose its vacant channels uniformly. The simulation model and TDMA frame format arrangement are based on GSM specifications. The simulation model considers 49 cells (7 clusters) in order to consider the effect of surrounding clusters on the central cluster and the overall system. The simulation considers both uniform and nonuniform traffic distributions. The simulation results show that the overall call blocking rate of adaptive channel borrowing with uniform channel allocation is lower than that of adaptive borrowing with channel ordering (ABCO). In contrast, the overall channel borrowing rate and the overall call drop rate of this method is higher than ABCO for uniform and nonuniform traffic distributions, respectively.
Keywords :
adaptive systems; cellular radio; channel allocation; digital simulation; multiuser channels; radio networks; statistical analysis; telecommunication traffic; time division multiple access; GSM specifications; TDMA cellular mobile networks; TDMA frame format; adaptive borrowing with channel ordering; adaptive channel borrowing assignment; all blocking rate reduction; call drop rate; cellular radio traffic; nonuniform traffic distribution; simulation model; simulation results; uniform channel allocation; uniform traffic distribution; Base stations; Cellular networks; Channel allocation; Digital systems; Frequency; GSM; Telecommunication traffic; Telephony; Time division multiple access; Traffic control;
Conference_Titel :
Networks, 2002. ICON 2002. 10th IEEE International Conference on
Print_ISBN :
0-7803-7533-5
DOI :
10.1109/ICON.2002.1033326
