一种WiFi多信道聚合的高速同步回传方法
发布时间：2018-12-16 04:02
【摘要】：为满足疯狂增长的数据业务需求,近年来蜂窝基站的部署越来越趋于小型化和密集化,这就对回传技术性能提出了更高的要求。该文将WiFi作为5G网络中的一种无线回传技术,提出一种基于WiFi多信道聚合的高速同步回传方案。现有WiFi协议(如IEEE 802.11n/ac)采用静态或动态信道绑定技术可将多个具有连续频谱的信道聚合为单一宽信道,从而提高网络容量。但是,静态绑定方式不够灵活,动态绑定方式在密集用户分布下也很难发挥其优势。该文则通过在单一网络节点上配置多射频实现非连续频谱的WiFi多信道聚合,其在扩展传输带宽,提升网络性能的同时,也可以有效克服802.11n/ac中信道绑定方式的弊端。方案主要包括3部分:多节点联合信道扫描、多信道同步收发控制及干扰检测。理论分析和仿真结果表明,所提非连续频谱的WiFi多信道聚合方案的回传性能优于802.11n/ac中连续频谱聚合方案,且多信道同步传输能有效抑制回传网络中的邻道干扰。最后,由搭建的原型验证系统证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.
【作者单位】： 西南交通大学信息科学与技术学院;
【基金】：国家自然科学基金(61471303) 欧盟FP7 QUICK项目(PIRSES-GA-2013-612652)~~
【分类号】：TN92
[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.
【作者单位】： 西南交通大学信息科学与技术学院;
【基金】：国家自然科学基金(61471303) 欧盟FP7 QUICK项目(PIRSES-GA-2013-612652)~~
【分类号】：TN92
【参考文献】
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