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On the Economic Aspects of Downlink Scheduling in DS-CDMA Systems: Base Station Density Perspective

Title
On the Economic Aspects of Downlink Scheduling in DS-CDMA Systems: Base Station Density Perspective
Author
백현미
Keywords
base-station density; cellular radio system; direct-sequence code division multiple access (DS-CDMA); downlink; high data rate (HDR); high-speed downlink packet access (HSDPA); one by one; outage probability; packet scheduling
Issue Date
2006-09
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v. 55, No. 5, Page. 1594-1602
Abstract
Wireless systems have evolved into supporting nonreal-time data services. However, as the data rates for the services increase, the number of base stations per service area needs to expand, which leads to a high degree of base-station density. On the other hand, the so-called best effort resource management has been extensively studied for nonreal-time data services. One example of such efforts can be found in packet scheduling. The purpose of this paper is to investigate the economic impact of the downlink scheduling in terms of the base-station density. To this end, equations that can calculate the base-station density for the given quality of service (QoS) requirements such as outage probabilities, average data rates, and target E-b/I-o were derived. Under specific QoS requirements on Rayleigh-fading channel environments, it is found that the one-by-one downlink scheduling (round-robin) requires about 50%-60% of the base stations required by the conventional simultaneous transmission. It was also found that this impact is almost the same as simply doubling the spectrum bandwidth for the simultaneous transmission. The base-station density is directly related to the infrastructure cost and thus may be translated into service prices. Therefore, the analysis in this paper provides a new insight into an economic aspect; how much the service prices for downloading the nonreal-time data would decrease with the introduction of packet scheduling in the code division multiple access downlink.
URI
https://ieeexplore.ieee.org/document/1703961http://repository.hanyang.ac.kr/handle/20.500.11754/108546
ISSN
0018-9545; 1939-9359
DOI
10.1109/TVT.2006.878602
Appears in Collections:
COLLEGE OF COMMUNICATION[E](언론정보대학) > INFORMATION SOCIOLOGY(정보사회학과) > Articles
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