Time slot assignment using cell partitioning in CDMA cellular systems

Author

Takeo, Kohji

Author_Institution

Technol. Res. Labs., YRP Mobile Telecommun., Yokosuka, Japan

Volume

5

fYear

2001

fDate

2001

Firstpage

1381

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2001. ICC 2001. IEEE International Conference on

Conference_Location

Helsinki

Print_ISBN

0-7803-7097-1

Type

conf

DOI

10.1109/ICC.2001.937147

Filename

937147