Dynamic cell configuration for CDMA microcell mobile radio communications systems considering nonuniform traffic distribution
✍ Scribed by Kohji Takeo; Shinichi Sato
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 328 KB
- Volume
- 83
- Category
- Article
- ISSN
- 8756-6621
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✦ Synopsis
In mobile communication systems oriented toward the future, the microcell system, considering the increase of subscribers and the information transfer rates, will be indispensable. When the microcell scheme is introduced, however, the traffic becomes remarkably nonuniform, which affects the communication quality and the subscriber capacity. The authors consider the CDMA microcell mobile communication system, and propose a dynamic cell configuration scheme (DCC) to solve the above problems. The proposed scheme operates as follows. The base station autonomously controls the pilot signal power and the desired uplink power level adaptively, so as to reconfigure the cells flexibly. By this scheme, the communication quality difference among the base stations due to nonuniform traffic is suppressed, and degradation of system efficiency is avoided. This paper describes the equipment architecture and the operating principle of the dynamic cell configuration. The performance of the proposed system is analyzed and is evaluated by simulation. It is shown that the proposed method is useful as a means to cope with traffic nonuniformity in a CDMA microcell system.