Communication cost of consensus for nodes with limited memory
Communication cost of consensus for nodes with limited memory
复制标题
内存有限的节点共识的通信成本
DOI:
10.1073/pnas.1912980117
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Ranade, Gireeja
中科院分区:
文献类型:
--
作者:
Fanti, Giulia;Holden, Nina;Peres, Yuval;Ranade, Gireeja
Motivated by applications in wireless networks and the Internet of Things, we consider a model ofnodes trying to reach consensus with high probability on their majority bit. Each nodeis assigned a bit at time 0 and is a finite automaton withbits of memory (i.e.,states) and a Poisson clock. When the clock ofrings,can choose to communicate and is then matched to a uniformly chosen node. The nodesandmay update their states based on the state of the other node. Previous work has focused on minimizing the time to consensus and the probability of error, while our goal is minimizing the number of communications. We show that, when m>3logloglog(n), consensus can be reached with linear communication cost, but this is impossible if m<logloglog(n). A key step is to distinguish when nodes can become aware of knowing the majority bit and stop communicating. We show that this is impossible if their memory is too low.
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影响因子:
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通讯作者:
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DOI:
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发表时间:
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期刊:
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DOI:
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发表时间:
2010
期刊:
ACM-SIAM Symposium on Discrete Algorithms
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