Leveraging Antenna Side-Lobe Information for Expedited Neighbor Discovery in Directional Terahertz Communication Networks
Leveraging Antenna Side-Lobe Information for Expedited Neighbor Discovery in Directional Terahertz Communication Networks
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DOI：
10.1109/vtcspring.2018.8417492
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发表时间：
2018-06
期刊：
影响因子：
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通讯作者：
Qing Xia;J. Jornet
中科院分区：
文献类型：
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作者：
Qing Xia;J. Jornet
太赫兹 (THz) 频段 (0.1-10 THz) 通信被认为是满足更高无线数据速率需求的潜在关键技术。太赫兹频段提供了巨大的传输带宽，范围从数百GHz到几太赫兹。然而，这种带宽是以非常高的通过损耗为代价的，因此，在传输和接收过程中需要同时使用高方向性天线来建立几米之外的通信链路。在定向通信网络中，需要有效的邻居发现来克服耳聋问题。现有的较低频段的邻居发现协议不能直接利用，因为它们没有捕获太赫兹频段的特性或支持每秒千兆比特甚至每秒太比特链路的需求。本文提出了一种利用定向天线旁瓣信息的太赫兹频段通信网络邻居发现协议。更具体地说，利用完整的天线辐射方向图来检测一系列有效信号，并将它们映射到通用检测标准，并加快邻居发现过程。开发了一个数学框架来比较具有和不具有天线旁瓣信息的邻居发现协议，并提供数值结果来说明所提出的邻居发现协议在完成发现过程所需的总时间方面的性能。
Terahertz (THz)-band (0.1-10 THz) communication is envisioned as a potentially key technology to satisfy the need for much higher wireless data rates. The THz-band provides a huge transmission bandwidth, which ranges from hundreds of GHz up to a few THz. Nevertheless, this bandwidth comes at the cost of a very high pass loss, and, as a result, highly directional antennas are needed simultaneously in transmission and reception to establish a communication link beyond a few meters. In directional communication networks, efficient neighbor discovery is needed to overcome the deafness problem. Existing neighbor discovery protocols for lower frequency bands cannot be directly utilized, because they do not capture the peculiarities of the THz band or the need to support multi Giga-bit-per-second and even Tera-bit-per- second links. In this paper, a neighbor discovery protocol for THz- band communication networks that leverages the directional antenna side-lobe information is presented. More specifically, the full antenna radiation pattern is utilized to detect a series of effective signals and map them to a universal detection standard and expedite the neighbor discovery process. A mathematical framework is developed to compare the neighbor discovery protocols with and without the antenna side-lobe information, and numerical results are provided to illustrate the performance of the proposed neighbor discovery protocol in terms of total time needed to complete the discovery process.