Title :
Time slot assignment using cell partitioning in CDMA cellular systems
Author_Institution :
Technol. Res. Labs., YRP Mobile Telecommun., Yokosuka, Japan
Abstract :
There are methods for dividing CDMA cellular systems in the frequency, time, and space domains to enhance system capacity and improve system efficiency under nonuniform traffic conditions. This paper evaluates a system in which time slots are assigned to subareas of a cell divided by a cell partitioning technique. These time slots are assigned according to different patterns in adjacent cells. The uplink system capacity is increased by only about 4% under a uniform traffic distribution by adjusting the uplink power level for every subarea. Evaluation with a hot-spot model showed that the uplink quality could be improved when cells are adaptively partitioned according to the traffic distribution
Keywords :
cellular radio; channel capacity; code division multiple access; multiuser channels; radio links; telecommunication traffic; CDMA cellular systems; adaptively partitioned cells; cell partitioning; frequency domain; hot-spot model; nonuniform traffic conditions; space domain; system capacity; system efficiency; time domain; time slot assignment; uniform traffic distribution; uplink power level; uplink quality; uplink system capacity; Communication system traffic control; Downlink; Frequency conversion; Interference; Multiaccess communication; Power system modeling; Space technology; Telecommunication traffic; Time division multiple access; Traffic control;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.937147
