本文關(guān)鍵詞： TD-SCDMA 碼資源利用率 工程參數(shù)優(yōu)化 自適應(yīng)規(guī)劃 負(fù)載均衡　出處：《電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：TD-SCDMA系統(tǒng)作為我國獨(dú)立提出的第三代移動通信標(biāo)準(zhǔn),極大的提升了系統(tǒng)傳輸速率及系統(tǒng)容量。但是自中國移動全面鋪開TD網(wǎng)絡(luò)后,出現(xiàn)了大量TD網(wǎng)絡(luò)用戶倒流回GSM網(wǎng)絡(luò),且駐留在GSM網(wǎng)絡(luò)的現(xiàn)象,不僅增加GSM網(wǎng)絡(luò)的負(fù)擔(dān),還浪費(fèi)TD的網(wǎng)絡(luò)資源,嚴(yán)重影響了TD和GSM用戶的感知。因此,如何高效的利用TD-SCDMA網(wǎng)絡(luò)資源,平滑轉(zhuǎn)移GSM網(wǎng)絡(luò)負(fù)擔(dān)成為亟待解決的問題。本文聚焦成都市TD-SCDMA系統(tǒng),針對成都市TD網(wǎng)絡(luò)資源利用率較低而GSM網(wǎng)絡(luò)利用率居高不下的情況進(jìn)行研究,以碼資源利用率作為TD網(wǎng)絡(luò)資源利用率的評估,詳細(xì)分析了影響成都市TD碼資源利用率的要因,分別從工程優(yōu)化和規(guī)劃算法兩個(gè)角度對成都市TD-SCDMA網(wǎng)絡(luò)資源利用率設(shè)計(jì)與實(shí)現(xiàn)展開研究工作。第一章首先闡述TD-SCDMA系統(tǒng)的特點(diǎn)與瓶頸,引出網(wǎng)絡(luò)資源利用率的概念并給出其評估方案,并對成都市TD網(wǎng)絡(luò)資源利用率現(xiàn)狀進(jìn)行了分析。分析影響TD網(wǎng)絡(luò)資源利用率的各類因素及其解決思路從而引出研究內(nèi)容,最后介紹論文的邏輯結(jié)構(gòu)。第二章介紹TD-SCDMA系統(tǒng)碼資源利用率的統(tǒng)計(jì)算法,詳細(xì)首先分析了3GPPR6協(xié)議的幀結(jié)構(gòu),從理論角度研究了各類業(yè)務(wù)占用的碼資源情況,并給出TD-SCDMA系統(tǒng)碼資源利用率的理論及現(xiàn)網(wǎng)統(tǒng)計(jì)方法,為后續(xù)成都市TD-SCDMA網(wǎng)絡(luò)資源利用率設(shè)計(jì)與實(shí)現(xiàn)研究提供了基礎(chǔ)。第三章研究影響成都市TD-SCDMA系統(tǒng)碼資源利用率的工程要因,從理論角度出發(fā),給出了碼資源利用率的8大影響因子。通過實(shí)地考察,OMC網(wǎng)管數(shù)據(jù)比對,路測數(shù)據(jù)分析等方式,研究了成都市TD網(wǎng)絡(luò)環(huán)境下,8大影響因子對碼資源利用率影響程度。研究結(jié)果表明,天線方向角不合理、天線下傾角不合理、切換參數(shù)設(shè)置不合理、小區(qū)超閑、鄰區(qū)錯配漏配是影響成都市TD-SCDMA系統(tǒng)碼資源利用率的五大要因。通過理論規(guī)劃、工程參數(shù)調(diào)測等方式,對這些因素逐一進(jìn)行工程優(yōu)化,優(yōu)化后,成都市TD-SCDMA系統(tǒng)碼資源利用率呈線性提升,優(yōu)化效果顯著。第四章研究成都市TD-SCDMA網(wǎng)絡(luò)資源利用率的理論設(shè)計(jì)與提升方案。首先提出一種基于碼資源利用率最大化的自適應(yīng)載波規(guī)劃算法,通過對各類業(yè)務(wù)的業(yè)務(wù)量進(jìn)行預(yù)測與自更新,自適應(yīng)配置各類業(yè)務(wù)載波數(shù),最大化碼資源利用率。結(jié)果表明,基于碼資源利用率最大化的自適應(yīng)載波規(guī)劃算法能有效預(yù)測業(yè)務(wù)量,并給出未來短期內(nèi)的載波規(guī)劃最優(yōu)配置,TD碼資源利用率相比于以往人工配置載波時(shí)有較大提升。其次提出一種自動鄰區(qū)添加算法,通過切換測量中檢測到的其他小區(qū)信息進(jìn)行評估,滿足條件時(shí)對鄰區(qū)列表進(jìn)行自動添加和刪除,本算法能有效的避免鄰區(qū)錯配漏配問題,仿真結(jié)果顯示,TD碼資源利用率相比于以往人工規(guī)劃鄰區(qū)時(shí)有較大提升。最后提出一種基于碼資源利用率的負(fù)載均衡算法,針對GSM與TD間負(fù)載過大的情況,通過接入控制和業(yè)務(wù)轉(zhuǎn)移算法,將碼資源利用率較高的GSM/TD小區(qū)用戶均衡至同覆蓋的TD/GSM小區(qū),最大化利用網(wǎng)絡(luò)資源,提升TD碼資源利用率。仿真表明,負(fù)載均衡后GSM碼資源利用率大幅度減低,而TD碼資源利用率有顯著提升。第五章總結(jié)本論文所涉及的研究工作,并指出下一步的研究工作與方向。
[Abstract]:The third generation mobile communication standard TD-SCDMA system as our proposed, greatly enhance the transmission rate and system capacity of the system. But since the China Mobile TD network in full swing, the emergence of a large number of TD network users back into the GSM network, and the resident phenomenon in the GSM network, GSM network not only increased the burden of waste TD cyber source, seriously affect the user's perception of TD and GSM. Therefore, TD-SCDMA cyber source how to efficiently transfer GSM, smoothing the burden of the network has become an urgent problem. This paper focuses on the Chengdu TD-SCDMA, for the low rate of use of TD cyber source Chengdu city network using GSM high rate of case studies, in order to use the rate of resource utilization rate of the TD code as the assessment of cyber source, the influence of Chengdu city TD code resource utilization rate due to the detailed analysis of the two angles from the engineering optimization and planning algorithm Chengdu city of TD-SCDMA cyber source utilization rate of the design and implementation of the research work. The first chapter describes the characteristics and the bottleneck of TD-SCDMA, leads to cyber source utilization concept and gives the evaluation scheme, and the TD cyber source utilization status in Chengdu city was analyzed. Analysis of various factors affecting the utilization of TD and cyber source solution which leads to the research content, the logical structure of the paper. The second chapter introduces the statistical algorithm utilization rate of source code with TD-SCDMA system, firstly analyzes the frame structure of the 3GPPR6 protocol, from the theory angle of code resources of all kinds of business occupation, and rate of theory and current network statistics is given by using TD-SCDMA system code resource, provide the basis for the design and implementation of the utilization rate of subsequent TD-SCDMA in Chengdu city. The third chapter studies the cyber source TD-SCDMA system in Chengdu City Engineering code resource utilization to be due, from a theoretical perspective, gives 8 factors influencing the utilization ratio of code resources. Through on-the-spot investigation, OMC network data, test data analysis, the study of Chengdu city TD network environment, the 8 major influencing factors to the influence degree of code resource utilization research. The results show that the antenna angle is not reasonable, the tilt angle of antenna is not reasonable, switching parameters set unreasonable, small super busy, neighbor mismatch with leakage is the impact of the Chengdu TD-SCDMA code resource utilization rate of five big. Through theoretical planning, engineering parameter test etc., for these factors one by one engineering optimization after optimization, the Chengdu TD-SCDMA code resource utilization rate is linear, the optimization effect is obvious. The fourth chapter of Chengdu city by using the theory of design TD-SCDMA cyber source and the rate of improvement plan. We propose a code based on resource utilization Adaptive carrier planning algorithm to maximize the rate of the volume of business of all kinds of business forecasting and self updating, adaptive allocation of various types of business carrier number, maximize the utilization of code resources. The results show that the adaptive carrier planning algorithms maximize the utilization of code resources can effectively forecast the traffic based on the carrier and gives the optimal allocation of future planning in the short term, TD code resource utilization compared to the previous manual configuration of carrier has greatly improved. Secondly, an automatic neighbor adding algorithm, other cell information by switching measurements detected in the evaluation, to meet the conditions of the neighbor list is automatically added and removed, the algorithm can effectively avoid the problem neighbor mismatch with leakage, the simulation results show that the use of TD code resource rate compared to the previous artificial planning area adjacent has greatly improved. Finally a utilization rate of code resources based on the negative Load balancing algorithm for GSM and TD load is too large, the transfer algorithm through access control and business, will be a higher rate of GSM/TD cell with TD/GSM user equilibrium to cover residential use of code resources, maximize the use of cyber source code, improve TD resource utilization. Simulation results show that the load balancing after GSM code resource utilization the rate is reduced greatly, and the TD code resource utilization rate is significantly improved. The fifth chapter summarizes the research work mentioned in the paper, and points out the work and direction of further research.

【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.53
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本文編號：1555074