講演名 | 2008-10-22 A Throughput Enhancement Scheme for a Millimeter-wave Gbps WPAN Cross Layer Design , |
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抄録(英) | This paper proposes the Virtual Time-slot Allocation (VTSA) scheme for throughput enhancement to realize a Gbps-order wireless personal area network (WPAN) system in the millimeter-wave realistic residential multipath environment. In the conventional time division multiple access (TDMA) WPAN system, the network controller, known as the piconet coordinator (PNC) allocates time-slots for devices in the network to establish communication links, one time-slot for one communication link. In this paper, the proposed VTSA scheme enables a single time-slot to be reused for multiple communication links simultaneously, thus significantly increase system throughput. However, this causes co-channel interference (CCI) among the communication links occupying the same time-slot. The proposed VTSA scheme is therefore designed to optimize the throughput-CCI tradeoff, taking advantage on the large path loss among communication links, a unique characteristic in the millimeter-wave band. The proposed scheme is a cross layer design involving the medium access control (MAC) layer and the physical (PHY) layer. The MAC layer is responsible for executing the VTSA algorithm, a protocol that manages the rules and procedures for throughput-CCI tradeoff in reusing the time-slots. Two time-slot reuse methods are proposed and compared in this paper, namely the minimum-CCI slotting method and the random slotting method. The PHY layer is responsible for constantly measuring and reporting the CCI due to time-slot reuse in different millimeter-wave channel conditions. As a result, it is found that the VTSA scheme is capable of increasing the system throughput as much as approximately 30% in the additive white Gaussian noise (AWGN), line-of-sight (LOS) and non-line-of-sight (NLOS) multipath channel. It is also found that the minimum-CCI slotting method has 10% better performance as compared to the random slotting method. |
キーワード(和) | |
キーワード(英) | virtual time-slot allocation / millimeter-wave / Gbps / cross layer / WPAN / co-channel interference |
資料番号 | RCS2008-105 |
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研究会情報 | |
研究会 | RCS |
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開催期間 | 2008/10/15(から1日開催) |
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講演論文情報詳細 | |
申込み研究会 | Radio Communication Systems (RCS) |
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本文の言語 | ENG |
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サブタイトル(和) | |
タイトル(英) | A Throughput Enhancement Scheme for a Millimeter-wave Gbps WPAN Cross Layer Design |
サブタイトル(和) | |
キーワード(1)(和/英) | / virtual time-slot allocation |
第 1 著者 氏名(和/英) | / Chin-Sean SUM |
第 1 著者 所属(和/英) | National Institute of Information and Communications Technology (NICT) |
発表年月日 | 2008-10-22 |
資料番号 | RCS2008-105 |
巻番号(vol) | vol.108 |
号番号(no) | 249 |
ページ範囲 | pp.- |
ページ数 | 6 |
発行日 |