Common Message Acknowledgments: Massive ARQ Protocols for Wireless Access
Common Message Acknowledgments: Massive ARQ Protocols for Wireless Access
复制标题
通用消息确认：用于无线接入的大规模 ARQ 协议
DOI：
10.1109/tcomm.2022.3182398
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发表时间：
2022
影响因子：
8.3
通讯作者：
P. Popovski
中科院分区：
文献类型：
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作者：
A. Kalør;Radosław Kotaba;P. Popovski
大规模随机接入在支持物联网（IoT）方面发挥着核心作用，在物联网中，大量用户的子集同时向中央基站传输小数据包。虽然对上行链路中海量访问的协议设计进行了大量的研究，但向用户提供消息确认的问题在一定程度上被忽视了。可靠通信需要依靠双向通信进行确认和重传。然而，由于活动用户可能有许多子集，因此提供确认需要大量的比特。在此基础上，我们定义了大规模自动重传请求（ARQ）协议的问题，并引入了下行链路中多个应答的有效联合编码方法。减少用于大规模确认的比特数的关键思想是允许一小部分误报确认。我们分析了这种方法的含义以及在大规模随机访问的情况下识别错误的影响。最后，我们表明，当允许重传时，这些节省可以显著提高可靠性，因为它允许使用更低的速率更可靠地传输确认消息。
Massive random access plays a central role in supporting the Internet of Things (IoT), where a subset of a large population of users simultaneously transmit small packets to a central base station. While there has been much research on the design of protocols for massive access in the uplink, the problem of providing message acknowledgments back to the users has been somewhat neglected. Reliable communication needs to rely on two-way communication for acknowledgement and retransmission. Nevertheless, because of the many possible subsets of active users, providing acknowledgments requires a significant amount of bits. Motivated by this, we define the problem of massive ARQ (Automatic Retransmission reQuest) protocol and introduce efficient methods for joint encoding of multiple acknowledgements in the downlink. The key idea towards reducing the number of bits used for massive acknowledgments is to allow for a small fraction of false positive acknowledgments. We analyze the implications of this approach and the impact of acknowledgment errors in scenarios with massive random access. Finally, we show that these savings can lead to a significant increase in the reliability when retransmissions are allowed since it allows the acknowledgment message to be transmitted more reliably using a much lower rate.
用于检索和近似成员资格的简洁数据结构
DOI：
10.1007/978-3-540-70575-8_32
发表时间：
2008
期刊：
影响因子：
--
作者：
Martin Dietzfelbinger;Rasmus Pagh
通讯作者：
Rasmus Pagh