A time synchronization method and device for an intelligent device network
A technology of time synchronization device and intelligent equipment, applied in multiplex communication, time division multiplexing system, electrical components and other directions, can solve the problems of high number of interactions, high power consumption, occupying too much communication bandwidth, etc.
Inactive Publication Date: 2018-11-30
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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Wherein, the method is based on the IEEE 802.15.4 protocol, and adopts the EDFTS time synchronization protocol to solve the problem that the number of messages and the number of interactions used for time synchronization in the existing smart device network are too high, thereby occupying too much communication bandwidth and the power The problem of excessive consumption
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[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0031] figure 1 It is a flow chart of the time synchronization method for smart device network provided by the present invention. like figure 1As shown, the time synchronization method for the smart device network provided by the present invention includes: in step S101, sending a request time synchronization command packet to the parent node of the smart device in the smart device network. Next, in step S102, a response data packet from the parent node of the smart device is received, and the response data packet includes the time slot sequence number where the parent node of the smart device is located. Finally, in step S103, set its own timer interrupt acc...
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The invention discloses a time synchronization method and device for a smart device network. The method comprises steps of: sending a request time synchronization command packet to a smart device mother node in the smart device network; receiving a response data packet from the smart device mother node, wherein the response data packet includes a time slot sequence number of the smart device mother node; setting self timer interruption according to the time slot sequence number of the smart device mother node in order that the self time slot sequence number is consistent with the time slot sequence number of the smart device mother node and thus time synchronization with the smart device mother node is achieved. The method and the device, based on an IEEE 802.15.4 protocol and an EDFTS time synchronization protocol, solves over large message amount and interactive times for time synchronization in the smart device network so as to solve problems of much occupied communication bandwidth and high power consumption.
Description
technical field [0001] The present invention relates to the technical field of smart device communication, and in particular, to a time synchronization method and device for a smart device network. Background technique [0002] In recent years, people have paid more and more attention to smart devices, and their related research and product applications have been continuously launched. The so-called smart device refers to any device with computing and processing capabilities, and these devices can be interconnected with other devices, controllers or personnel by using communication technologies such as local networks or the Internet, so as to realize the application of related functions such as monitoring and control. [0003] Smart devices can communicate through GSM network, Bluetooth, WiFi network or wireless radio frequency network. Among them, the communication cost of smart devices based on GSM network communication is relatively high, but the network coverage is rela...
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IPC IPC(8): H04J3/06
CPCH04J3/0638
Inventor 倪茂昌王海龙张宇王雅哲
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI