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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
대규모 재해가 발생하면 피해 지역에 있는 가족이나 친구의 안부를 확인하고 싶어 통화 수요가 갑자기 급증합니다. 모바일 셀룰러 시스템에서는 제한된 무선 주파수 자원으로 인해 많은 통화 시도가 차단됩니다. 본 논문에서는 이러한 문제에 대한 해결책으로 통화 보류 시간 제한에 대해 연구하고, 통화 시도 횟수에 따라 보류 시간 제한을 동적으로 변경하는 DHTL(Dynamic Holding Time Limit) 방식을 제안한다. 유지 시간 제한 효과는 일정하고 교통량이 많은 모델을 사용한 컴퓨터 시뮬레이션을 사용하여 먼저 조사됩니다. 본 시뮬레이션에서는 대기시간 제한이 감소함에 따라 통화의 평균 대기시간이 감소함을 보여줍니다. 그러나 보류 시간을 제한하면 핸드오버 시 차단되는 통화 수와 강제 통화 종료 횟수가 상당히 줄어드는 것으로 나타났습니다. 다음으로 통화 수요가 증가함에 따라 차단율을 정상 비율로 낮추는 대기 시간 제한에 대한 간단한 추정 방법을 설명한다. 마지막으로 시뮬레이션 결과는 DHTL 방법이 갑작스럽고 큰 트래픽 부하 변동 상황에서도 좋은 성능을 유지함을 보여줍니다.
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부
Kazunori OKADA, "Limiting the Holding Time in Mobile Cellular Systems during Heavy Call Demand Periods in the Aftermath of Disasters" in IEICE TRANSACTIONS on Fundamentals,
vol. E85-A, no. 7, pp. 1454-1462, July 2002, doi: .
Abstract: Call demand suddenly and greatly increases in the aftermath of a major disaster, because people want to check on their families and friends in the stricken area. Many call attempts in mobile cellular systems are blocked due to the limited radio frequency resources. In this paper, as a solution to this problem, limiting the holding time of calls is investigated and a dynamic holding time limit (DHTL) method, which varies the holding time limit dynamically based on the number of call attempts, is proposed. The effect of limiting the holding time is investigated first using a computer simulation with a constant and heavy traffic load model. This simulation shows that the average holding time of calls is decreased as the holding time limit is reduced. But it also shows limiting the holding time decreases the number of calls blocked and forced call terminations at handover considerably. Next, a simple estimation method for the holding time limit, which reduces the blocking rate to the normal rate for increasing call demand, is described. Finally, results are given of a simulation, which show that the DHTL method keeps good performance for a sudden and great traffic load fluctuation condition.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e85-a_7_1454/_p
부
@ARTICLE{e85-a_7_1454,
author={Kazunori OKADA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Limiting the Holding Time in Mobile Cellular Systems during Heavy Call Demand Periods in the Aftermath of Disasters},
year={2002},
volume={E85-A},
number={7},
pages={1454-1462},
abstract={Call demand suddenly and greatly increases in the aftermath of a major disaster, because people want to check on their families and friends in the stricken area. Many call attempts in mobile cellular systems are blocked due to the limited radio frequency resources. In this paper, as a solution to this problem, limiting the holding time of calls is investigated and a dynamic holding time limit (DHTL) method, which varies the holding time limit dynamically based on the number of call attempts, is proposed. The effect of limiting the holding time is investigated first using a computer simulation with a constant and heavy traffic load model. This simulation shows that the average holding time of calls is decreased as the holding time limit is reduced. But it also shows limiting the holding time decreases the number of calls blocked and forced call terminations at handover considerably. Next, a simple estimation method for the holding time limit, which reduces the blocking rate to the normal rate for increasing call demand, is described. Finally, results are given of a simulation, which show that the DHTL method keeps good performance for a sudden and great traffic load fluctuation condition.},
keywords={},
doi={},
ISSN={},
month={July},}
부
TY - JOUR
TI - Limiting the Holding Time in Mobile Cellular Systems during Heavy Call Demand Periods in the Aftermath of Disasters
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1454
EP - 1462
AU - Kazunori OKADA
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E85-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2002
AB - Call demand suddenly and greatly increases in the aftermath of a major disaster, because people want to check on their families and friends in the stricken area. Many call attempts in mobile cellular systems are blocked due to the limited radio frequency resources. In this paper, as a solution to this problem, limiting the holding time of calls is investigated and a dynamic holding time limit (DHTL) method, which varies the holding time limit dynamically based on the number of call attempts, is proposed. The effect of limiting the holding time is investigated first using a computer simulation with a constant and heavy traffic load model. This simulation shows that the average holding time of calls is decreased as the holding time limit is reduced. But it also shows limiting the holding time decreases the number of calls blocked and forced call terminations at handover considerably. Next, a simple estimation method for the holding time limit, which reduces the blocking rate to the normal rate for increasing call demand, is described. Finally, results are given of a simulation, which show that the DHTL method keeps good performance for a sudden and great traffic load fluctuation condition.
ER -