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Computer Science > Networking and Internet Architecture

arXiv:2209.15407 (cs)
[Submitted on 30 Sep 2022]

Title:Crocs: Cross-Technology Clock Synchronization for WiFi and ZigBee

Authors:Zihao Yu, Chengkun Jiang, Yuan He, Xiaolong Zheng, Xiuzhen Guo
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Abstract:Clock synchronization is a key function in embedded wireless systems and networks. This issue is equally important and more challenging in IoT systems nowadays, which often include heterogeneous wireless devices that follow different wireless standards. Conventional solutions to this problem employ gateway-based indirect synchronization, which suffers low accuracy. This paper for the first time studies the problem of cross-technology clock synchronization. Our proposal called Crocs synchronizes WiFi and ZigBee devices by direct cross-technology communication. Crocs decouples the synchronization signal from the transmission of a timestamp. By incorporating a barker-code based beacon for time alignment and cross-technology transmission of timestamps, Crocs achieves robust and accurate synchronization among WiFi and ZigBee devices, with the synchronization error lower than 1 millisecond. We further make attempts to implement different cross-technology communication methods in Crocs and provide insight findings with regard to the achievable accuracy and expected overhead.
Subjects: Networking and Internet Architecture (cs.NI)
Cite as: arXiv:2209.15407 [cs.NI]
  (or arXiv:2209.15407v1 [cs.NI] for this version)
  https://doi.org/10.48550/arXiv.2209.15407

Submission history

From: Zihao Yu [view email]
[v1] Fri, 30 Sep 2022 12:08:08 UTC (808 KB)
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