OFDMA 무선통신시스템의 호접속 제어를 위한 SMDP 기반 최적화모형 (SMDP-Based Optimization Model for Call Admission Control in an OFDMA Wireless Communication Systems)

서지정보

· 발행기관 : 대한산업공학회
· 수록지 정보 : 산업공학(IE interfaces) / 25권 / 4호 / 450 ~ 457페이지
· 저자명 : 백천현, 정용주

초록

This study addresses the call admission control(CAC) problem for OFDMA wireless communication systems in which both subcarriers and power should be considered together as the system resources. To lessen the exccessive allocation of radio resources for protecting handoff calls, the proposed CAC allows the less data rate than their requirements to handoff calls. The CAC problem is formulated as a semi-Markov decision process(SMDP) with constraints on the blocking probabilities of handoff calls. Some extensive experiments are conducted to show the usefulness of the proposed CAC model.

영어초록

This study addresses the call admission control(CAC) problem for OFDMA wireless communication systems in which both subcarriers and power should be considered together as the system resources. To lessen the exccessive allocation of radio resources for protecting handoff calls, the proposed CAC allows the less data rate than their requirements to handoff calls. The CAC problem is formulated as a semi-Markov decision process(SMDP) with constraints on the blocking probabilities of handoff calls. Some extensive experiments are conducted to show the usefulness of the proposed CAC model.

참고자료

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