Challenges, Designs, and Performances of a Distributed Algorithm for Minimum-Latency of Data-Aggregation in Multi-Channel WSNs

Ngoc Tu Nguyen, Bing Hong Liu, Shao I. Chu, Hao Zhe Weng

Research output: Contribution to journalArticlepeer-review

61 Scopus citations


In wireless sensor networks (WSNs), the sensed data by sensors need to be gathered, so that one very important application is periodical data collection. There is much effort which aimed at the data collection scheduling algorithm development to minimize the latency. Most of previous works investigating the minimum latency of data collection issue have an ideal assumption that the network is a centralized system, in which the entire network is completely synchronized with full knowledge of components. In addition, most of existing works often assume that any (or no) data in the network are allowed to be aggregated into one packet and the network models are often treated as tree structures. However, in practical, WSNs are more likely to be distributed systems, since each sensor's knowledge is disjointed to each other, and a fixed number of data are allowed to be aggregated into one packet. This is a formidable motivation for us to investigate the problem of minimum latency for the data aggregation without data collision in the distributed WSNs when the sensors are considered to be assigned the channels and the data are compressed with a flexible aggregation ratio, termed the minimum-latency collision-avoidance multiple-data-aggregation scheduling with multi-channel (MLCAMDAS-MC) problem. A new distributed algorithm, termed the distributed collision-avoidance scheduling (DCAS) algorithm, is proposed to address the MLCAMDAS-MC. Finally, we provide the theoretical analyses of DCAS and conduct extensive simulations to demonstrate the performance of DCAS.

Original languageEnglish (US)
Article number8556039
Pages (from-to)192-205
Number of pages14
JournalIEEE Transactions on Network and Service Management
Issue number1
StatePublished - Mar 2019

Bibliographical note

Publisher Copyright:
© 2018 IEEE.


  • Data aggregation
  • algorithm design and analysis
  • collision free
  • distributed algorithm
  • wireless sensor networks (WSNs)


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