Method and device for calculating node time error in wireless information system
A technology for calculating node time and error. It is applied in time division multiplexing systems, multiplexing communication, advanced technology, etc. It can solve the problems of node time synchronization dependence and satellite navigation timing, so as to maintain time synchronization and reduce dependence. Effect
Active Publication Date: 2022-05-20
NANCHANG UNIV
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[0006] In view of the above situation, it is necessary to provide a wireless information system node time error calculation method and device to solve the problem that the existing distributed wireless information system node time synchronization depends on satellite navigation timing
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[0049]Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0050] These and other aspects of embodiments of the invention will become apparent with reference to the following description and drawings. In these descriptions and drawings, some specific implementations of the embodiments of the present invention are specifically disclosed to represent some ways of implementing the principles of the embodiments of the present invention, but it should be understood that the scope of the embodiments of the present invention is not limited by this limit. On the contrary, the embodiments of the present ...
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A method and device for calculating a node time error in a wireless information system, the method comprising: calculating the time at which a receiving node receives signal energy to obtain the first signal arrival time; obtaining the time length of a rough synchronization segment of a communication signal in a communication frame structure to obtain The first time length, according to the first time length, calculate the time difference between the signals arriving at the time detection module and the leading edge of the communication frame; calculate the time when the leading edge of the communication frame reaches the receiving node according to the first signal arrival time and the time difference, and obtain the second signal arrival time ; Calculate the transmission time of the transmitting node according to the frame count recorded by the receiving node; determine the propagation time of the signal from the transmitting node to the receiving node according to the motion state of the transmitting node and the receiving node; calculate the sum of the transmitting time and the propagation time to obtain the communication The reference time at which the front edge of the frame arrives at the receiving node; and the time error of the receiving node is calculated according to the arrival time of the second signal and the reference time.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to a method and device for calculating node time errors of a wireless information system. Background technique [0002] In various military and civilian distributed wireless information systems such as air-space-ground integrated heterogeneous networks, tactical information networks, Internet of Things, broadband wireless communication networks, satellite communication networks, observation and surveillance intelligence networks, and Internet of Vehicles, time synchronization between nodes is used It aims to establish a unified time reference among the nodes of the heterogeneous system, which is the core foundation of application-control-data-resource-signal coordination and a key factor for the safe operation and performance of various distributed wireless information systems. [0003] In the current distributed wireless information system, each node uses a local reference clo...
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IPC IPC(8): H04J3/06
CPCH04J3/0644H04J3/0682Y02D30/70
Inventor 王玉皞高晓晓周辉林王正海
Owner NANCHANG UNIV