The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
CDMA(코드 분할 다중 접속)를 사용하는 셀룰러 통신 시스템에서 소프트 핸드오프를 구현하려면 스위치와 여러 기지국 사이에 통신 회선을 설정하고 이러한 다중 연결을 통해 통신 데이터를 기지국에 동시에 배포해야 합니다. 이는 하드 핸드오프와 동일한 양의 통신 회선 자원을 사용하여 소프트 핸드오프를 수행할 경우 하드 핸드오프에 비해 차단 확률이 높아져 서비스 품질이 저하됨을 의미한다. 또한, 셀의 크기가 작을수록 핸드오프가 더 자주 발생하며 이로 인해 강제 종료 가능성이 높아집니다. 더 빈번한 핸드오프를 수용하려면 스위치에 더 큰 처리 용량이 부여되어야 합니다. 일반적으로 큐잉 핸드오프 방식을 사용하면 즉시 핸드오프 방식에 비해 강제 종료 확률이 완화될 것으로 예상할 수 있다. 이에 본 논문에서는 처리 부하를 크게 증가시키지 않으면서 비우선순위 큐잉 방법보다 강제 종료를 완화하기 위한 방법으로 빠르게 이동하는 MS에 우선순위를 부여하는 우선순위 큐잉 핸드오프 방법을 제안한다. 그런 다음 제안한 방법의 트래픽 특성을 마이크로 셀 시스템의 다른 세 가지 방법(즉시 방법, 비우선순위 큐잉 방법, 기존 다중 연결이 없는 하드 핸드오프 방법)과 컴퓨터 시뮬레이션을 통해 비교합니다. 여기서는 제안하는 방법이 빠르게 이동하는 호에 우선순위를 부여한다는 점을 고려하여 느리게 이동하는 단말과 빠르게 이동하는 단말을 대상으로 이들 방법의 트래픽 특성을 별도로 평가하였다. 결과는 제안하는 방법이 느리게 진행되는 통화에 큰 영향을 주지 않으면서 비우선순위 대기열 방식보다 강제 종료 확률과 전체 통화 실패 확률을 더 줄일 수 있음을 보여줍니다.
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Noriteru SHINAGAWA, Takehiko KOBAYASHI, Keisuke NAKANO, Masakazu SENGOKU, "Evaluation of Teletraffic in Cellular Communication Systems Using Multi-Connections for Soft Handoff" in IEICE TRANSACTIONS on Fundamentals,
vol. E83-A, no. 7, pp. 1318-1327, July 2000, doi: .
Abstract: To implement soft handoff in cellular communication systems that employ code division multiple access (CDMA), it is necessary to establish communication lines between the switch and multiple base stations and distribute the communication data via these multi-connections to the base stations simultaneously. This means that, when soft handoff is performed with the same amount of communication line resources as hard handoff, the blocking probability is higher than for hard handoff, and service quality is thus worse. Furthermore, handoffs occur more frequently as the size of cells becomes smaller, and this increases the probability of forced terminations. Switches must be endowed with greater processing capacity to accommodate the more frequent handoffs. The use of the queuing handoff method can be expected, in general, to mitigate forced termination probability compared with the immediate handoff method. In this regard, we propose a prioritized queuing handoff method that gives priority to fast-moving mobile stations (MSs) as a way to mitigate forced terminations even more than the non-priority queuing method without appreciably increasing the processing load. We then compare the traffic characteristics of our proposed method with these of three other methods in micro cell systems--immediate method, non-priority queuing method, and conventional hard handoff method without multi-connections--by computer simulation. Here, considering that the proposed method gives priority to fast-moving calls, traffic characteristics for these methods were evaluated separately for slow- and fast-moving MSs. The results reveal that proposed method can reduce the forced termination probability and total call failure probability more than non-priority queuing method without having an appreciable impact on slow-moving calls.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e83-a_7_1318/_p
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@ARTICLE{e83-a_7_1318,
author={Noriteru SHINAGAWA, Takehiko KOBAYASHI, Keisuke NAKANO, Masakazu SENGOKU, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Evaluation of Teletraffic in Cellular Communication Systems Using Multi-Connections for Soft Handoff},
year={2000},
volume={E83-A},
number={7},
pages={1318-1327},
abstract={To implement soft handoff in cellular communication systems that employ code division multiple access (CDMA), it is necessary to establish communication lines between the switch and multiple base stations and distribute the communication data via these multi-connections to the base stations simultaneously. This means that, when soft handoff is performed with the same amount of communication line resources as hard handoff, the blocking probability is higher than for hard handoff, and service quality is thus worse. Furthermore, handoffs occur more frequently as the size of cells becomes smaller, and this increases the probability of forced terminations. Switches must be endowed with greater processing capacity to accommodate the more frequent handoffs. The use of the queuing handoff method can be expected, in general, to mitigate forced termination probability compared with the immediate handoff method. In this regard, we propose a prioritized queuing handoff method that gives priority to fast-moving mobile stations (MSs) as a way to mitigate forced terminations even more than the non-priority queuing method without appreciably increasing the processing load. We then compare the traffic characteristics of our proposed method with these of three other methods in micro cell systems--immediate method, non-priority queuing method, and conventional hard handoff method without multi-connections--by computer simulation. Here, considering that the proposed method gives priority to fast-moving calls, traffic characteristics for these methods were evaluated separately for slow- and fast-moving MSs. The results reveal that proposed method can reduce the forced termination probability and total call failure probability more than non-priority queuing method without having an appreciable impact on slow-moving calls.},
keywords={},
doi={},
ISSN={},
month={July},}
부
TY - JOUR
TI - Evaluation of Teletraffic in Cellular Communication Systems Using Multi-Connections for Soft Handoff
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1318
EP - 1327
AU - Noriteru SHINAGAWA
AU - Takehiko KOBAYASHI
AU - Keisuke NAKANO
AU - Masakazu SENGOKU
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E83-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2000
AB - To implement soft handoff in cellular communication systems that employ code division multiple access (CDMA), it is necessary to establish communication lines between the switch and multiple base stations and distribute the communication data via these multi-connections to the base stations simultaneously. This means that, when soft handoff is performed with the same amount of communication line resources as hard handoff, the blocking probability is higher than for hard handoff, and service quality is thus worse. Furthermore, handoffs occur more frequently as the size of cells becomes smaller, and this increases the probability of forced terminations. Switches must be endowed with greater processing capacity to accommodate the more frequent handoffs. The use of the queuing handoff method can be expected, in general, to mitigate forced termination probability compared with the immediate handoff method. In this regard, we propose a prioritized queuing handoff method that gives priority to fast-moving mobile stations (MSs) as a way to mitigate forced terminations even more than the non-priority queuing method without appreciably increasing the processing load. We then compare the traffic characteristics of our proposed method with these of three other methods in micro cell systems--immediate method, non-priority queuing method, and conventional hard handoff method without multi-connections--by computer simulation. Here, considering that the proposed method gives priority to fast-moving calls, traffic characteristics for these methods were evaluated separately for slow- and fast-moving MSs. The results reveal that proposed method can reduce the forced termination probability and total call failure probability more than non-priority queuing method without having an appreciable impact on slow-moving calls.
ER -