本文選題：異構(gòu)網(wǎng) + 干擾協(xié)調(diào)��； 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：異構(gòu)網(wǎng)通過運(yùn)用不同功率的基站同頻部署,擴(kuò)大了網(wǎng)絡(luò)覆蓋率及系統(tǒng)容量。但同時(shí)這種多層結(jié)構(gòu)也帶來了小區(qū)間干擾問題。ABS是一種時(shí)域上的小區(qū)間干擾協(xié)調(diào)技術(shù),解決了下行傳輸中高功率宏基站和低功率小基站共享頻域資源時(shí)的干擾問題,但是該技術(shù)的缺點(diǎn)是降低了宏基站的用戶容量。目前對(duì)于該問題大部分的解決思路是從改善ABS數(shù)量配置的角度出發(fā),而很少有研究提升ABS方案本身。論文首先介紹了小區(qū)間干擾協(xié)調(diào)的相關(guān)技術(shù)。對(duì)小區(qū)間干擾協(xié)調(diào)面臨的問題,現(xiàn)有的解決方案及技術(shù)進(jìn)行了介紹,包括一種基于經(jīng)典ABS的動(dòng)態(tài)算法,LP-ABS技術(shù)及比例公平算法。然后論文研究介紹了一種從頻域、時(shí)域、功率三個(gè)維度聯(lián)合進(jìn)行干擾協(xié)調(diào)的新型ABS解決方案。論文用仿真證明該方案可以顯著增加了宏基站用戶的吞吐量,同時(shí)不對(duì)小基站產(chǎn)生過多干擾。本文的工作重點(diǎn)是對(duì)新型聯(lián)合協(xié)調(diào)方案的進(jìn)一步增強(qiáng)。通過對(duì)算法的改進(jìn)及各個(gè)參數(shù)的優(yōu)化,在頻域上對(duì)擴(kuò)展區(qū)域UE的保留資源分配,并對(duì)宏基站在ABS子幀上的傳輸功率進(jìn)行限制,在保證了宏基站用戶吞吐量增強(qiáng)的同時(shí),使小基站抗干擾的表現(xiàn)更為優(yōu)秀。通過仿真證明,增強(qiáng)型聯(lián)合ABS方案與LP-ABS及新型聯(lián)合方案相比可以實(shí)現(xiàn)更高的宏基站用戶容量增益,同時(shí)使小基站用戶獲得不錯(cuò)的抗干擾能力。
[Abstract]:The heterogeneous network expands the network coverage and system capacity by using the same frequency deployment of different power base stations. But at the same time, this multi-layer structure also brings the inter-cell interference problem. ABS is a kind of inter-cell interference coordination technology in time domain, which solves the interference problem when high power macro base station and low power small base station share frequency domain resources in downlink transmission. But the disadvantage of this technology is that it reduces the user capacity of Acer station. At present, most of the solutions to this problem are from the point of view of improving the number of ABS, but there are few studies to improve the ABS scheme itself. In this paper, we first introduce the technology of inter-cell interference coordination. In this paper, the existing solutions and techniques for inter-cell interference coordination are introduced, including a dynamic algorithm based on classical ABS, LP-ABS technology and proportional fairness algorithm. Then, this paper introduces a new ABS solution for interference coordination in frequency domain, time domain and power dimension. Simulation results show that the proposed scheme can significantly increase the throughput of Acer stations and not cause too much interference to small base stations. The emphasis of this paper is on the further enhancement of the new joint coordination program. Through the improvement of the algorithm and the optimization of each parameter, the reserved resource allocation of the extended region UE in the frequency domain and the limitation of the transmission power of the Acer station on the ABS subframe can ensure the user throughput of the Acer station to increase at the same time. Make small base station anti-jamming performance better. The simulation results show that the enhanced joint ABS scheme can achieve higher user capacity gain than LP-ABS and the new combination scheme, and at the same time, the small base station users can obtain good anti-jamming ability.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN929.5

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本文編號(hào)：2048423