發(fā)布時(shí)間：2019-03-10 21:14

【摘要】：隨著移動(dòng)互聯(lián)網(wǎng)業(yè)務(wù)的飛速發(fā)展和終端設(shè)備的智能化,用戶對于數(shù)據(jù)速率提出了更高的要求。LTE-Advanced作為第四代移動(dòng)通信系統(tǒng)的主要技術(shù)標(biāo)準(zhǔn),增加了載波聚合,增強(qiáng)MIMIO,多點(diǎn)協(xié)作傳輸,中繼技術(shù)等多項(xiàng)關(guān)鍵技術(shù)來滿足用戶對數(shù)據(jù)速率的需求。載波聚合技術(shù)可以同時(shí)使用多個(gè)不同帶寬的載波分量來提供更大的傳輸帶寬,更高的數(shù)據(jù)速率和更低的時(shí)延,從而提供更好的用戶體驗(yàn)。本文以LTE-Advanced網(wǎng)絡(luò)為基礎(chǔ),重點(diǎn)研究載波聚合環(huán)境中無線資源管理方法,包括成員載波選擇算法和RB分配算法。論文首先闡述了LTE-Advanced網(wǎng)絡(luò)架構(gòu)及其新增關(guān)鍵技術(shù),重點(diǎn)介紹了載波聚合的技術(shù)特點(diǎn),包括載波聚合的原理,聚合方式和部署應(yīng)用場景。接著介紹了LTE-Advanced網(wǎng)絡(luò)中無線資源管理方法和FemtoCell相關(guān)技術(shù),以及FemtoCell技術(shù)對現(xiàn)有LTE-Advanced網(wǎng)絡(luò)的影響。其次,論文針對雙層網(wǎng)絡(luò)部署的技術(shù)特點(diǎn),提出了一種FemtoCell網(wǎng)絡(luò)中基于動(dòng)態(tài)分組的成員載波選擇算法。算法充分考慮成員載波之間干擾和鄰區(qū)的干擾,設(shè)計(jì)相應(yīng)的求解算法,運(yùn)用LTE-Sim開源軟件開展仿真實(shí)驗(yàn),分析算法的有效性和可行性。仿真結(jié)果表明,所提算法在一定程度上能夠提高成員載波選擇的效率。最后,論文進(jìn)一步研究無線資源管理方法,提出了一種改進(jìn)的RB資源分配算法,算法通過增加約束條件,將問題轉(zhuǎn)化為整數(shù)線性規(guī)劃問題。論文從算法復(fù)雜度,公平性等方面分析算法的可行性。通過和現(xiàn)有資源分配算法進(jìn)行仿真對比,進(jìn)一步驗(yàn)證算法的有效性。仿真結(jié)果表明,所提方案提高了系統(tǒng)性能和資源利用效率。
[Abstract]:With the rapid development of mobile Internet service and the intelligence of terminal equipment, users put forward higher requirements for data rate. As the main technical standard of the fourth generation mobile communication system, LTE-Advanced increases carrier aggregation and enhances MIMIO,. Multi-point cooperative transmission, relay technology and other key technologies to meet the needs of users for data rates. Carrier aggregation technology can provide greater transmission bandwidth, higher data rate and lower delay by using multiple carrier components of different bandwidth at the same time, thus providing a better user experience. Based on LTE-Advanced network, this paper focuses on the wireless resource management methods in carrier aggregation environment, including member carrier selection algorithm and RB allocation algorithm. In this paper, the architecture of LTE-Advanced network and its new key technologies are introduced firstly, and the technical characteristics of carrier aggregation, including the principle of carrier aggregation, the aggregation mode and the deployment application scenario, are emphatically introduced. Then it introduces the wireless resource management method and FemtoCell related technology in LTE-Advanced network, as well as the influence of FemtoCell technology on the existing LTE-Advanced network. Secondly, according to the technical characteristics of two-layer network deployment, this paper proposes a member carrier selection algorithm based on dynamic packet in FemtoCell network. The algorithm fully considers the interference between the member carriers and the adjacent region, designs the corresponding solution algorithm, carries out the simulation experiment with LTE-Sim open source software, and analyzes the validity and feasibility of the algorithm. Simulation results show that the proposed algorithm can improve the efficiency of carrier selection to some extent. Finally, the paper further studies the wireless resource management method, and proposes an improved RB resource allocation algorithm. By adding constraints, the algorithm transforms the problem into an integer linear programming problem. In this paper, the feasibility of the algorithm is analyzed from the aspects of complexity, fairness and so on. Through the simulation comparison with the existing resource allocation algorithm, the effectiveness of the algorithm is further verified. Simulation results show that the proposed scheme improves the system performance and resource utilization efficiency.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN929.5

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本文編號：2438030