發(fā)布時(shí)間：2018-12-16 04:02

【摘要】：為滿足瘋狂增長的數(shù)據(jù)業(yè)務(wù)需求,近年來蜂窩基站的部署越來越趨于小型化和密集化,這就對(duì)回傳技術(shù)性能提出了更高的要求。該文將WiFi作為5G網(wǎng)絡(luò)中的一種無線回傳技術(shù),提出一種基于WiFi多信道聚合的高速同步回傳方案�，F(xiàn)有WiFi協(xié)議(如IEEE 802.11n/ac)采用靜態(tài)或動(dòng)態(tài)信道綁定技術(shù)可將多個(gè)具有連續(xù)頻譜的信道聚合為單一寬信道,從而提高網(wǎng)絡(luò)容量。但是,靜態(tài)綁定方式不夠靈活,動(dòng)態(tài)綁定方式在密集用戶分布下也很難發(fā)揮其優(yōu)勢(shì)。該文則通過在單一網(wǎng)絡(luò)節(jié)點(diǎn)上配置多射頻實(shí)現(xiàn)非連續(xù)頻譜的WiFi多信道聚合,其在擴(kuò)展傳輸帶寬,提升網(wǎng)絡(luò)性能的同時(shí),也可以有效克服802.11n/ac中信道綁定方式的弊端。方案主要包括3部分:多節(jié)點(diǎn)聯(lián)合信道掃描、多信道同步收發(fā)控制及干擾檢測(cè)。理論分析和仿真結(jié)果表明,所提非連續(xù)頻譜的WiFi多信道聚合方案的回傳性能優(yōu)于802.11n/ac中連續(xù)頻譜聚合方案,且多信道同步傳輸能有效抑制回傳網(wǎng)絡(luò)中的鄰道干擾。最后,由搭建的原型驗(yàn)證系統(tǒng)證明了所提方案的可行性及有效性。
[Abstract]:In recent years, the deployment of cellular base stations has become more and more miniaturized and intensive in order to meet the frantic demand of data services, which puts forward a higher demand for the performance of the return transmission technology. In this paper, WiFi is considered as a wireless return technology in 5G networks, and a high speed synchronous return scheme based on WiFi multi-channel aggregation is proposed. The existing WiFi protocol (such as IEEE 802.11n/ac) uses static or dynamic channel binding techniques to aggregate multiple channels with continuous spectrum into a single wide channel, thus increasing the network capacity. However, static binding is not flexible, dynamic binding is difficult to exert its advantages in dense user distribution. In this paper, WiFi multi-channel aggregation with discontinuous frequency spectrum is implemented by configuring multiple radio frequency on a single network node. It not only expands the transmission bandwidth and improves the network performance, but also effectively overcomes the disadvantages of channel binding in 802.11n/ac. The scheme includes three parts: multi-node joint channel scanning, multi-channel synchronous transceiver control and interference detection. The theoretical analysis and simulation results show that the proposed WiFi multi-channel aggregation scheme has better performance than the continuous spectrum aggregation scheme in 802.11n/ac, and the multi-channel synchronous transmission can effectively suppress the adjacent channel interference in the feedback network. Finally, the feasibility and effectiveness of the proposed scheme are proved by the prototype verification system.
【作者單位】： 西南交通大學(xué)信息科學(xué)與技術(shù)學(xué)院;
【基金】：國家自然科學(xué)基金(61471303) 歐盟FP7 QUICK項(xiàng)目(PIRSES-GA-2013-612652)~~
【分類號(hào)】：TN92

【參考文獻(xiàn)】

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本文編號(hào)：2381789