JOURNAL ARTICLE

Dynamic Frequency Allocation in OFDMA Cellular Networks

Jong-Chan LeeGi-Sung Lee

Year: 2013 Journal:   Journal of the Korea Academia-Industrial cooperation Society Vol: 14 (6)Pages: 2992-2998   Publisher: The Korea Academia-Industrial Cooperation Society

Abstract

차세대 이동통신 시스템은 음성 트래픽뿐만 아니라 데이터, 화상, 비디오와 같은 멀티미 디어 트래픽을 지원하여야 하므로 더 많은 무선 자원을 요구한다. 본 논문에서는 OFDMA 시스템에서 모바일 멀티미디어 서비스를 위한 사용자 및 부채널 우선순위 기반 자원할당 방안을 제안한다. 제시된 방안들을 통하여 실시간 클래스의 연속성을 보장하고 비실시간 가입자를 최대로 수용할 수 있다. 시뮬레이션은 총 데이터 처리량과 블럭킹률에 집중한다. 시뮬레이션 결과는 기존의 방법에 비하여 우수함을 보였다. The future mobile communication system can support not only voice but also multimedia applications such as data, image and video. It requires greater resources than the voice-oriented mobile system. We propose user and sub-channel priority based resource allocation for mobile multimedia services in the OFDMA systems. Our method is able to guarantee QoS continuity of realtime services and carry the maximum number of non-realtime subscriber. Simulation is focused on total throughput and blocking rate. The simulation results show that our proposed method provides a better performance than the conventional method.

Keywords:
Computer science Quality of service Computer network Throughput Channel allocation schemes Orthogonal frequency-division multiple access Channel (broadcasting) Real-time computing Resource allocation Cellular network Blocking (statistics) Frequency-division multiple access Orthogonal frequency-division multiplexing Multimedia Wireless Telecommunications

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15
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0.11
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Citation History

Topics

Advanced Wireless Network Optimization
Physical Sciences →  Engineering →  Electrical and Electronic Engineering
Wireless Communication Networks Research
Physical Sciences →  Computer Science →  Computer Networks and Communications
Telecommunications and Broadcasting Technologies
Physical Sciences →  Engineering →  Media Technology
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