Free Access Distributed Queue Protocol for Massive Cellular-Based M2M Communications with Bursty Traffic
Free Access Distributed Queue Protocol for Massive Cellular-Based M2M Communications with Bursty Traffic
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DOI：
10.1109/vtcfall.2018.8690880
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发表时间：
2018-08
期刊：
影响因子：
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通讯作者：
Anh-Tuan H. Bui;Chuyen T. Nguyen;T. Thang;A. Pham
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文献类型：
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作者：
Anh-Tuan H. Bui;Chuyen T. Nguyen;T. Thang;A. Pham
长期演进(LTE)网络预计将在提供与5G宏图中数十亿机器类型设备(MTD)的连接方面发挥关键作用。由于LTE-A基于ALOHA的接入框架单独不能支持MTDS导致的突发性海量接入场景，3GPP额外采用了接入类禁止(ACB)方案作为基线流量控制方法。虽然该方案肯定提高了设备的接入成功概率，但相应的延迟降级可能是不可接受的。在本文中，我们放弃了基于ALOHA的LTE框架，提出了一种新的协议--自由接入分布式队列(FADQ)，并提出了一种估计方法来更有效地解决大规模同步接入问题。在3GPP参考设置下的仿真表明，FADQ协议在保持与ACB相同的接入成功概率的同时，显著降低了接入时延。
Long Term Evolution (LTE) networks are expected to play a key role in providing connections to billions of Machine-Type Devices (MTDs) in the 5G big picture. Since the ALOHA-based access framework of LTE-A alone cannot support bursty massive access scenarios caused by the MTDs, the 3GPP has additionally employed the Access Class Barring (ACB) scheme as the baseline traffic control method. While the scheme certainly improves access success probability of the devices, corresponding delay degradation may be unacceptable. In this paper, we renounce the ALOHA-based framework of LTE to propose a new protocol, namely the Free Access Distributed Queue (FADQ), accompanied by an estimation method to resolve the massive synchronized access issue in a more efficient manner. Simulations under the 3GPP's reference setup show that FADQ protocol significantly reduces access delay while maintaining an access success probability on par with the ACB.