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학술지 Performance analysis of cross- and cigar-shaped urban microcells considering user mobility characteristics
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저자
조호신, 정인명, 강상혁, 성단근
발행일
200001
출처
IEEE Transactions on Vehicular Technology, v.49 no.1, pp.105-116
ISSN
0018-9545
출판사
IEEE
DOI
https://dx.doi.org/10.1109/25.820703
협약과제
00JR2300, IMT-2000 비동기 방식 기지국/제어국 공동개발, 채종석
초록
User mobility characteristics and cell shapes in urban microcellular environments are different from those in macrocellular environments because pedestrians walk along streets and radio signals are guided by tall buildings lining both sides of the streets. Urban area microcell shapes follow approximately the street pattern. In this paper, we characterize low-tier user mobility in typical urban microcells: cross-shaped cells and cigar-shaped cells, and then evaluate and compare the two types of microcell. The results show that the more suitable cell shape with respect to handoff traffic and its signaling load is determined by the probability of straight movement at an intersection. On the other hand, blocking probability in low-tier microcells mainly depends on the cell size, not the shape. This framework and its numerical results can be utilized in determining the cell shape and size of urban microcellular systems.
KSP 제안 키워드
Blocking probability(BP), Cell Size, Mobility characteristics, Numerical results, Performance analysis, Radio Signal, Shape and size, Signaling load, Tall buildings, Urban area, User Mobility