OFDMA 기반의 전력선 통신을 활용한 홈 네트워크에서 트리플 플레이 서비스의 QoS를 보장하기 위한 효율적 자원 할당 기법
Efficient Resource Allocation Schemes of OFDMA Based Power Line Home Networks for the Triple Play Service with QoS Guarantee
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초록
전력선 채널은 임펄스 잡음(impulsive noise)과 주기정상성 잡음(cyclo-stationary noise)의 독특한 잡음 특성과함께 임피던스 부정합(impedance mismatching)에 의한 주파수 선택적 페이딩(frequency selective fading)의 특성을 가지고 있다. 또한 전력선 채널은 토폴로지와 잡음 소스의 변화가 자주 일어나지 않기 때문에 무선 채널과 같은 짧은 시간스케일의 채널 응답변화가 없다. 본 논문에서는 이러한 전력선 채널의 특성을 반영하여 OFDMA 방식을 도입한 홈 네트워크에서 트리플 플레이 서비스(Triple Play Service)의 QoS를 보장하면서 채널 사용효율을 높이는 자원할당기법을 제안한다. 우선 전력선 채널에서의 다중 사용자 이득을 얻기 위한 채널 행렬을 제안하였고 이를 기반으로 한처리량최대화 기법과 지연최소화 기법을 제안하였다. 모의실험을 통하여 두 가지 기법 모두가 음성과 영상 트래픽의QoS 요구사항을 충족시키면서도 적은 양의 자원을 소비하는 것을 보였다.
Abstract
The power line channel has two types of unique noises: impulsive noise and cyclo-stationary noise. In addition it has a frequency selective fading characteristic due to the impedance mismatching in the power line. Differently than other wireless networks, the communication topology and noise sources in the power line communication change rarely, so the channel response is quasi-static. In this paper, we propose efficient resource allocation schemes for OFDMA based power line home networks considering the Quality of Service (QoS) of Triple Play Service (TPS), which aim to achieve throughput maximization and delay minimization. Our proposed schemes use the channel matrix which contains the information about multiuser diversity. Through simulations, we show that our proposals meet users' various QoS requirements of the TPS traffic and efficiently use the power line channel.
참고문헌 (16)
- V. Oksman, "G.hn: The New ITU-T Home Networking Standard", IEEE Communications Magazine, 47(10), pp.138~145 (2009)
- "Draft standard for broadband over power line networks: medium access control and physical layer specifications"[URL]
- "The HomePlug Powerline Alliance"[URL]
- "The HD-PLC Alliance"[URL]
- F.J. Canete, "Analysis of the Cyclic Short-Term Variation of Indoor Power Line Channels", IEEE Journal on Selected Areas in Communications, 24(7), pp.1327~1338 (2006)
- M. Zimmermann, "Analysis and Modeling of Impulsive Noise in Broad-Band Powerline Communications", IEEE Transactions on Electromagnetic Compatibility, 44(1), pp.249~258 (2002)
- M. Tlich, "Coherence Bandwidth and its Relationship with the RMS delay spread for PLC channels using Measurements up to 100MHz", IFIP International Federation for Information Processing, 256, pp.129~142 (2008)
- S. Mangold, "IEEE 802.11e Wireless LAN for Quality of Service", in Proc. European Wireless (2002)
- D.P. Hole, "Capacity of an IEEE 802.11b Wireless LAN supporting VoIP", in Proc. IEEE International Conference on Communications (2004)
- R. Zhang, "Hybrid Reservation", Contention-Based MAC for Video Streaming over Wireless Networks, 2010, pp.28(3), 389~398
- S.-G. Yoon, "OFDMA CSMA", CA Protocol for Power Line Communication, 2010, ~
- G..I. Tsiropoulos, "Call Admission Control with QoS Guarantees for Multiservice Wireless-Broadband over Power Line Networks", in Proc. International Symposium on Wireless Communication Systems (2008)
- A. Papaioannou, "'A Cross-layer Scheduling Scheme for Multimedia Services over Power Line Networks", in Proc. International Symposium on Power Line Communications (2008)
- N. Batsios, "Performance of CDMA", PRMA as an Access Technique for Integrated Services in a UMTS High Altitude Platform System, 2005, pp.32(3), ~
- G.J. Sullivan, "The H.264", AVC Advanced Video Coding Standard: Overview and Introduction to the Fidelity Range Extensions, 2004, ~
- "HomePlug AV System Specifications, ver. 1.0.1", ~ (2007)