경영과학 (Korean Management Science Review)

한국경영과학회 (The Korean Operations Research and Management Science Society)
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음성 및 데이터 서비스를 지원하는 CDMA/TDD 시스템을 위한 실시간 통합 타임슬롯 및 코드 할당 체계

Real-time Integrated Timeslot and Code Allocation Scheme for the CDMA/TDD System Supporting Voice and Data Services

  • 발행 : 2008.07.31
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초록

CDMA/TOD with asymmetric capacity allocation between uplink and downlink is a highly attractive solution to support the next generation mobile systems. This is because flexible asymmetric allocation of capacity to uplink and downlink usually improves the utilization of the limited bandwidth. In this paper, we mathematically formulate an optimal timeslot and code allocation problem, which is to maximize the total utility considering the numbers of codes(channels) allocated to each data class and the forced terminations of previously allocated codes. We also suggest a real-time integrated timeslot and code allocation scheme using Lagrangean relaxation and subgradient optimization techniques. Experimental results show that the proposed scheme provides high-quality solutions in a fast time.

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참고문헌

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