Sense and Deploy: Blockage-Aware Deployment of Reliable 60 GHz mmWave WLANs
Sense and Deploy: Blockage-Aware Deployment of Reliable 60 GHz mmWave WLANs
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DOI：
10.1109/mass.2018.00063
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发表时间：
2018-10
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影响因子：
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通讯作者：
Zhicheng Yang;Parth H. Pathak;Jianli Pan;M. Sha;P. Mohapatra
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文献类型：
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作者：
Zhicheng Yang;Parth H. Pathak;Jianli Pan;M. Sha;P. Mohapatra
60 GHz毫米波网络已成为设计下一代多千兆位WLAN的潜在候选网络。由于60 GHz链路由于人类移动性引起的阻塞而频繁中断，因此部署可以在存在阻塞的情况下提供鲁棒覆盖的60 GHz WLAN是一个具有挑战性的问题。在本文中，我们研究阻塞感知的覆盖和部署的60 GHz无线局域网。我们首先表明，室内环境的反射轮廓可以使用几个测量感测。提出了一种新的覆盖度量（角扩展覆盖），它捕获可用路径的数量和空间分集。此外，研究表明，使用中继可以以较低的成本扩展AP的覆盖范围，并在可用路径中提供额外的空间多样性。我们提出了一种启发式算法，确定AP和中继的位置，同时最大限度地提高了客户端的角度扩展覆盖度量。我们基于测试平台的评估表明，对于五个不同的房间，我们提出的部署可以分别在存在1个，3个和5个并发人为阻塞的情况下保证91.7%，83.9%和74.1%的客户端位置的平均连接，大大提高了60 GHz链路对阻塞的鲁棒性。
60 GHz millimeter-wave networks have emerged as a potential candidate for designing the next generation of multi-gigabit WLANs. Since the 60 GHz links suffer from frequent outages due to blockages caused by human mobility, deploying 60 GHz WLANs that can provide robust coverage in presence of blockages is a challenging problem. In this paper, we study blockage-aware coverage and deployment of 60 GHz WLANs. We first show that the reflection profile of an indoor environment can be sensed using a few measurements. A novel coverage metric (angular spread coverage) which captures the number of available paths and their spatial diversity is proposed. Additionally, it is shown that using relays can extend the coverage of the AP at a lower cost and provide added spatial diversity in the available paths. We propose a heuristic algorithm that determines the AP and relay locations while maximizing the angular spread coverage metric for the clients. Our testbed-based evaluation shows that for five different rooms, our proposed deployment can guarantee an average connectivity of 91.7%, 83.9%, and 74.1% of client locations in the presence of 1, 3 and 5 concurrent human blockages respectively, substantially increasing the robustness of 60 GHz links against blockages.