Title:
WIRELESS SENSOR NETWORK TIME SYNCHRONIZATION METHOD BASED ON PARTIAL TIMESTAMP INFORMATION
Document Type and Number:
WIPO Patent Application WO/2023/207254
Kind Code:
A1
Abstract:
The present invention relates to the technical field of wireless sensor networks and relates to a wireless sensor network time synchronization method based on partial timestamp information. According to the method, partial timestamp information and response time interval information are transmitted at a local time when a preset clock source node returns an acknowledgement frame, thereby avoiding timestamp interaction; and for a Gaussian random delay and an exponential random delay, a maximum likelihood estimation method and a best linear unbiased estimation method are respectively used to simultaneously estimate a frequency offset and a phase offset of a clock, thereby implementing the synchronization between nodes. According to the present invention, the transmission of synchronization information does not depend on a specific synchronization frame, and a synchronization function can be embedded into existing network data streams, thereby effectively reducing energy consumption for synchronization.
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Inventors:
WANG HENG (CN)
PENG ZHENGCEN (CN)
MA WENQIAO (CN)
PENG ZHENGCEN (CN)
MA WENQIAO (CN)
Application Number:
PCT/CN2023/075322
Publication Date:
November 02, 2023
Filing Date:
February 10, 2023
Export Citation:
Assignee:
UNIV CHONGQING POSTS & TELECOM (CN)
International Classes:
H04W56/00
Foreign References:
| CN114710828A | 2022-07-05 | |||
| CN109936519A | 2019-06-25 | |||
| CN112118623A | 2020-12-22 | |||
| CN113055828A | 2021-06-29 | |||
| US20220039042A1 | 2022-02-03 |
Attorney, Agent or Firm:
TIDYTEND INTELLECTUAL PROPERTY LAW FIRM (CN)
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