A Cross Layer Scheduling and Resource Allocation Algorithm for OFDMA Wireless Networks
碩士 === 國立中央大學 === 通訊工程研究所 === 95 === As multimedia communications develop rapidly in the recent years, in order to maximize the capacity of wireless networks, scheduling plays an important role in supplying quality of service (QoS) requirements to broadband wireless communications. The IEEE 802.16 s...
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ndltd-TW-095NCU056500412015-10-13T11:31:57Z http://ndltd.ncl.edu.tw/handle/47562453566135861468 A Cross Layer Scheduling and Resource Allocation Algorithm for OFDMA Wireless Networks 正交分頻多重接取系統下之跨層式排程及資源分配演算法設計 Iao-Tin Lin 林瑤亭 碩士 國立中央大學 通訊工程研究所 95 As multimedia communications develop rapidly in the recent years, in order to maximize the capacity of wireless networks, scheduling plays an important role in supplying quality of service (QoS) requirements to broadband wireless communications. The IEEE 802.16 standard provides four different scheduling services: Unsolicited Grant Service (UGS), real-time Polling Service (rtPS), non-real-time Polling Service (nrtPS), and Best Effort (BE). In this paper, we formulate the optimal problem by maximizing the average utility function of all active users and then propose a cross-layer algorithm to achieve the higher throughput by allocating resources dynamically. Our scheme is aimed at designing jointly dynamical subchannel assignment (DSA)and capacity planning (CP) solutions. The simulation focuses on IEEE 802.16 wireless systems working in Orthogonal Frequency Division Multiple Accesses (OFDMA) and Point-to-Multipoint (PMP) mode, with one single cell serving many Mobile Stations (MSs) in downlink transmission. Finally, the numerical result shows that the cross-layer algorithm approaches a higher throughput and improves extremely the performance of BE and nrtPS services while supporting the quality of rtPS services at acceptable levels. 陳永芳 2007 學位論文 ; thesis 74 en_US |
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碩士 === 國立中央大學 === 通訊工程研究所 === 95 === As multimedia communications develop rapidly in the recent years, in order to maximize the capacity of wireless networks, scheduling plays an important role in supplying quality of service (QoS) requirements to broadband wireless communications. The IEEE 802.16 standard provides four different scheduling services: Unsolicited Grant Service (UGS), real-time Polling Service (rtPS), non-real-time Polling Service (nrtPS), and Best Effort (BE). In this paper, we formulate the optimal problem by maximizing the average utility function of all active users and then propose a cross-layer algorithm to achieve the higher throughput by allocating resources dynamically. Our scheme is aimed at designing jointly dynamical subchannel assignment (DSA)and capacity planning (CP) solutions. The simulation focuses on IEEE 802.16 wireless systems working in Orthogonal Frequency Division Multiple Accesses (OFDMA) and Point-to-Multipoint (PMP) mode, with one single cell serving many Mobile Stations (MSs) in downlink transmission. Finally, the numerical result shows that the cross-layer algorithm approaches a higher throughput and improves extremely the performance of BE and nrtPS services while supporting the quality of rtPS services at acceptable levels.
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author2 |
陳永芳 |
author_facet |
陳永芳 Iao-Tin Lin 林瑤亭 |
author |
Iao-Tin Lin 林瑤亭 |
spellingShingle |
Iao-Tin Lin 林瑤亭 A Cross Layer Scheduling and Resource Allocation Algorithm for OFDMA Wireless Networks |
author_sort |
Iao-Tin Lin |
title |
A Cross Layer Scheduling and Resource Allocation Algorithm for OFDMA Wireless Networks |
title_short |
A Cross Layer Scheduling and Resource Allocation Algorithm for OFDMA Wireless Networks |
title_full |
A Cross Layer Scheduling and Resource Allocation Algorithm for OFDMA Wireless Networks |
title_fullStr |
A Cross Layer Scheduling and Resource Allocation Algorithm for OFDMA Wireless Networks |
title_full_unstemmed |
A Cross Layer Scheduling and Resource Allocation Algorithm for OFDMA Wireless Networks |
title_sort |
cross layer scheduling and resource allocation algorithm for ofdma wireless networks |
publishDate |
2007 |
url |
http://ndltd.ncl.edu.tw/handle/47562453566135861468 |
work_keys_str_mv |
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