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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/68640

    Title: 在LTE-A下聚合未授權頻譜及動態分配資源以優化系統效能;Aggregation of Unlicensed Spectrum and Dynamic Resource Allocation to Optimize LTE-A System Efficiency
    Authors: 李婉如;Wan-ru-Li
    Contributors: 通訊工程學系
    Keywords: 載波聚合;基因演算法;資源分配;系統吞吐量;滿意度;LTE-A
    Date: 2015-07-28
    Issue Date: 2015-09-23 13:56:51 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 隨著移動通信技術的發展,使用者與日俱增,對數據傳輸速率的要求越
    來越高,造成頻譜資源緊缺的現象日益嚴重,於是在 2008 年 3GPP 開始制
    定第四代無線網路系統 LTE-Advanced 相關規格,其中載波聚合(Carrier
    道品質及負載狀況以挑選最適合使用者的載波單元,以及針對 GBR 與
    及使用者滿意度。;With the development of mobile communication technology, the number of users and the demand of data rate has been increasing, causing serious shortage of the spectrum resources. In 2008, 3GPP began to develop the specification of the fourth-generation wireless network system, i.e. LTE-Advanced, and the carrier aggregation (CA) technology to enhance the data rate by aggregating continuous and non-continuous carriers to make a lot of users satisfied with the
    transmission requirement.
      But the demand of users for multimedia Internet services has been increasing, making the unlicensed spectrum become overloaded. Therefore, this thesis hopes to combine the licensed and unlicensed spectrum to provide a wide data channel and high data rate to users. This thesis focuses on improving the system throughput in the downlink and proposes the way based on the generic algorithm (GA) to optimize the weight. According to channel quality and loading, we select the component carrier which is the most suitable to users, and a resource allocation method for the GBR and non-GBR of different traffic types to make resource allocation more effective. Finally, we validate our method through simulation, to check out whether the proposed method can improve system throughput and user satisfaction or not.
    Appears in Collections:[通訊工程研究所] 博碩士論文

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