상세정보
학술지
High reuse efficiency of radio resources in urban microcellular systems
- 저자
- 조호신, 권재균, 성단근
- 발행일
- 200009
- 출처
- IEEE Transactions on Vehicular Technology, v.49 no.5, pp.1669-1677
- ISSN
- 0018-9545
- 출판사
- IEEE
- 협약과제
- 00JR2300, IMT-2000 비동기 방식 기지국/제어국 공동개발, 채종석
- 초록
- A new microcell configuration scheme in urban areas is proposed in order to increase the reuse efficiency of radio resources. Multiple directional-beam antennas lined up along a street form a cigar-shaped cell. Antennas are located at intersection and are directed along the intersecting streets. Two antennas facing each other form a microzone and, therefore, a cigar-shaped cell consists of multiple microzones in a line. Each microzone is protected against cochannel interference from neighboring microzones by confinement of transmitted signals to a microzone using down-tilting of antenna beams. Therefore, a radio channel which is occupied in one microzone can be used in adjacent microzones. An increase in system capacity is achieved by the high reuse efficiency of radio resources. The proposed system increases system capacity up to 560% with a call blocking probability of 1% when compared with a conventional system. In addition, a macrodiversity scheme using two antennas in a microzone improves call quality on reverse link.
- KSP 제안 키워드
- Blocking probability(BP), Configuration Scheme, Conventional System, Transmitted signals, Urban area, call blocking probability, call quality, co-channel interference(CCI), radio channel, radio resource, system capacity