A Space-Time Analysis of LTE and Wi-Fi Inter-Working
A Space-Time Analysis of LTE and Wi-Fi Inter-Working
复制标题
LTE 和 Wi-Fi 互通的时空分析
DOI：
10.1109/jsac.2016.2614922
复制
发表时间：
2016-11
影响因子：
16.4
通讯作者：
Mao Guoqiang
中科院分区：
文献类型：
--
作者：
Chen Youjia;Ding Ming;Lopez Perez David;Lin Zihuai;Mao Guoqiang
长期演进（LTE）和无线保真（Wi-Fi）网络的协同互通近来引起了广泛关注，并且已经提出了若干策略来增强它们的网络容量。在本文中，我们提出了一个新的框架来分析LTE和Wi-Fi的几种互通策略的网络性能。所提出的框架考虑LTE和Wi-Fi系统两者、下行链路（DL）和上行链路（UL）传输两者以及在时域和空域两者中生成的干扰。基于这样的框架，我们首次从理论上分析了Wi-Fi网络的性能，考虑了小区内的时间效率以及具有空间随机性的信号和小区间干扰。此外，我们还研究了以下两种架构的性能：1）Wi-Fi与理想载波侦听多址（CSMA）双工系统共存的共存架构，这代表了LTE Release 14授权辅助接入网络的上限性能; 2）允许LTE上的UL和Wi-Fi上的DL的全新架构，称为Boost架构。我们推导出分析结果的DL和UL网络性能的信号质量分布和总区域系统吞吐量（AST）在这两个架构，并量化其性能增益相比，传统的不相交的LTE Wi-Fi架构。仿真结果验证了我们的分析结果，并表明，在一个典型的户外场景中，共存架构和Boost架构可以分别增加总AST高达11%和25%，与传统的分离LTE Wi-Fi。
Cooperative inter-working of the long-term evolution (LTE) and the wireless fidelity (Wi-Fi) networks have drawn much attention recently, and several strategies have been proposed to enhance their network capacity. In this paper, we propose a new framework to analyze the network performance of several inter-working strategies for the LTE and the Wi-Fi. The proposed framework considers both the LTE and the Wi-Fi systems, both the downlink (DL) and the uplink (UL) transmissions, and the generated interference in both the time and the spatial domains. Based on such a framework, we theoretically analyze for the first time the performance of a Wi-Fi network, taking into account the intra-cell time efficiency and the signal and inter-cell interference with spatial randomness. Moreover, we study the performance of: 1) a coexisting architecture where Wi-Fi coexists with an ideal carrier sense multiple access (CSMA) duplex system, which represents an upper bound performance for the LTE Release 14 licensed assisted access network and 2) a brand-new architecture that allows UL on LTE and DL on Wi-Fi, referred to as the Boost architecture. We derive analytical results for both the DL and the UL network performances in terms of the signal quality distribution and the total area system throughput (AST) in these two architectures, and quantify their performance gain compared with the traditional disjoint LTE Wi-Fi architecture. Simulation results validate our analysis results, and show that, in a typical outdoor scenario, the coexisting architecture and the Boost architecture can, respectively, increase the total AST up to 11% and 25%, compared with the traditional disjoint LTE Wi-Fi.
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DOI：
10.1109/tnet.2007.904010
发表时间：
2008-08
期刊：
IEEE/ACM Transactions on Networking
影响因子：
--
作者：
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通讯作者：
Omesh Tickoo;B. Sikdar
影响因子：
10.4
作者：
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DOI：
10.1109/glocom.2014.7037343
发表时间：
2014-12
期刊：
2014 IEEE Global Communications Conference
影响因子：
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作者：
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通讯作者：
Jeongho Jeon;Qian Li;Huaning Niu;A. Papathanassiou;Geng Wu
影响因子：
3.7
作者：
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通讯作者：
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影响因子：
8.3
作者：
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通讯作者：
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