發(fā)布時間：2018-01-16 19:34

  本文關(guān)鍵詞：LTE-Advanced系統(tǒng)中異構(gòu)網(wǎng)雙連接關(guān)鍵技術(shù)的研究　出處：《北京郵電大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 異構(gòu)網(wǎng)絡(luò) 雙連接 小小區(qū)增強 非理想回程 小區(qū)聯(lián)合

【摘要】：隨著智能終端和移動互聯(lián)網(wǎng)的高速發(fā)展,爆炸式增長的移動數(shù)據(jù)業(yè)務(wù)量給移動網(wǎng)絡(luò)帶來了巨大的壓力：不僅迫使空中接口技術(shù)不斷革新,也推動了移動網(wǎng)絡(luò)部署的轉(zhuǎn)變,即由過去的全部由宏基站組成的同構(gòu)網(wǎng)絡(luò)向由不同發(fā)射功率的基站組成的異構(gòu)網(wǎng)絡(luò)的轉(zhuǎn)變。3GPP LTE/LTE-Advanced無線接入技術(shù)作為ITU4G的入選技術(shù),目前標(biāo)準(zhǔn)化工作已經(jīng)處于Rel-12階段,Rel-12的標(biāo)準(zhǔn)化工作主要集中在對包含低功率基站的異構(gòu)網(wǎng)絡(luò)的優(yōu)化。 回程在寬帶移動通信系統(tǒng)中扮演著重要的角色,在密集部署低功率基站的異構(gòu)網(wǎng)絡(luò)中尤為如此。3GPP Rel-10/11提出的載波聚合技術(shù)和協(xié)作多點傳輸技術(shù)都需要節(jié)點之間緊密合作,僅僅適用于理想回程場景。針對3GPP Rel-12階段提出的非理想回程場景,必須在更高層實現(xiàn)數(shù)據(jù)的分割與聚合。本文研究的在分組數(shù)據(jù)匯聚協(xié)議層實現(xiàn)數(shù)據(jù)分割與聚合的雙連接技術(shù),被認(rèn)定為一種應(yīng)對非理想回程部署場景的候選技術(shù)。 通過不斷跟進(jìn)3GPP LTE-Advanced標(biāo)準(zhǔn)化進(jìn)展,本文分析了雙連接技術(shù)的應(yīng)用場景,從用戶平面和控制平面對雙連接技術(shù)進(jìn)行了研究,包括用戶面／控制面架構(gòu)的設(shè)計,架構(gòu)設(shè)計實現(xiàn)了用戶平面和控制平面的分離；對用戶面／控制面的技術(shù)細(xì)節(jié)進(jìn)行了研究,提出了適用于雙連接的激活與去激活、上行定時提前、隨機(jī)接入方案,提出了雙連接通信過程中輔小區(qū)添加、修改、釋放流程方案及切換流程增強方案；搭建了雙連接仿真平臺,從吞吐量角度驗證了雙連接技術(shù)的有效性；對雙連接場景中小區(qū)聯(lián)合機(jī)制進(jìn)行了研究,提出了一種新的動態(tài)偏移量設(shè)置方案,該方案可以使網(wǎng)絡(luò)根據(jù)自身負(fù)載水平的變化自適應(yīng)改變偏移量大小,以達(dá)到負(fù)載均衡、提升網(wǎng)絡(luò)資源利用率目的。
[Abstract]:With the rapid development of intelligent terminals and mobile Internet, has brought great pressure to the mobile data explosive growth in the volume of business to the mobile network: not only forced air interface technology innovation, but also promoted the transformation of mobile network deployment, which is composed of all the past Acer station homogeneous network to heterogeneous network composed of different base station transmit power the change of.3GPP LTE/LTE-Advanced ITU4G was selected as the wireless access technology, the current standardization work has been in the stage of Rel-12, the optimization of the standardization work of Rel-12 mainly concentrated in the heterogeneous network to include low power base stations.
Return play an important role in broadband mobile communication system in heterogeneous network, dense deployment of low power base station especially in carrier.3GPP Rel-10/11 proposed the polymerization technology and the coordinated multi point transmission technology needs close cooperation between nodes, applies only to return the ideal scene. For non ideal return 3GPP Rel-12 phase of the scene, must at a higher level to realize the data segmentation and aggregation. This research in packet data convergence protocol layer to realize data segmentation and connection technology of polymerization of double, has been recognized as a response to the non ideal backhaul candidate technology scene.
Follow up the progress of 3GPP through the LTE-Advanced standard, this paper analyzes the application scenarios of double connection technology, from the user plane and control plane of double connection technology, including design / control plane architecture user, architecture design to achieve the separation of user plane and control plane; the user plane / control plane in detail the research is put forward for dual link activation and deactivation, uplink timing, random access scheme, proposed dual link communication process in the secondary cell to add, modify and release process scheme and the handoff process enhancement scheme; build the double link simulation platform, effectiveness of double connection technology is verified from the perspective of throughput; the dual link scene cell joint mechanism is studied, put forward the plan of setting up a new dynamic offset, this scheme can make the network according to their own water load The leveling change adaptively changes the size of the offset to achieve the load balance and improve the utilization of network resources.

【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN929.5

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本文編號：1434529