LtFi: Cross-technology Communication for RRM between LTE-U and IEEE 802.11
LtFi: Cross-technology Communication for RRM between LTE-U and IEEE 802.11
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发表时间：
2017-07
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通讯作者：
P. Gawłowicz;A. Zubow;A. Wolisz
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作者：
P. Gawłowicz;A. Zubow;A. Wolisz
跨技术通信（CTC）在近期文献中被提出，作为一种利用异构无线技术之间协作机会的方式。本文介绍了LtFi，一种能够在共址的LTE - U和WiFi网络节点之间建立跨技术通信的系统。LtFi采用两步法：利用空中接口，LTE - U基站向相邻的WiFi节点广播连接和识别数据，这些数据用于在有线互联网上创建双向控制信道。通过这种方式，LtFi使得在异构的WiFi和LTE - U网络之间开发先进的跨技术干扰和无线电资源管理方案成为可能。LtFi复杂度低，完全符合LTE - U技术，并且在WiFi端可使用商用现货（COTS）硬件工作。它已进行了原型实现和评估。实验结果表明，在拥挤的无线环境中，即使在非常低的LTE - U接收功率水平（-92dBm）下，LtFi也能够可靠地解码通过LtFi空中接口传输的数据。此外，系统级模拟的结果显示，LtFi能够准确估计典型的LTE - U多小区环境中干扰LTE - U基站的集合。
Cross-technology communication (CTC) was proposed in recent literature as a way to exploit the opportunities of collaboration between heterogeneous wireless technologies. This paper presents LtFi, a system which enables to set-up a CTC between nodes of co-located LTE-U and WiFi networks. LtFi follows a two-step approach: using the air-interface LTE-U BSs are broadcasting connection and identification data to adjacent WiFi nodes, which is used to create a bi-directional control channel over the wired Internet. This way LtFi enables the development of advanced cross-technology interference and radio resource management schemes between heterogeneous WiFi and LTE-U networks. LtFi is of low complexity and fully compliant with LTE-U technology and works on WiFi side with COTS hardware. It was prototypically implemented and evaluated. Experimental results reveal that LtFi is able to reliably decoded the data transmitted over the LtFi air-interface in a crowded wireless environment at even very low LTE-U receive power levels of -92dBm. Moreover, results from system-level simulations show that LtFi is able to accurately estimate the set of interfering LTE-U BSs in a typical LTE-U multi-cell environment.