Method, terminal device and storage medium for node synchronization in wireless network
A node synchronization and wireless network technology, applied in the field of communication, can solve the problems of high external environment dependence, affecting network synchronization performance, and failure to receive synchronization reference signals, etc., to achieve the effect of fast and simple frequency synchronization
Active Publication Date: 2021-12-24
HYTERA COMM CORP
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Problems solved by technology
However, the synchronization methods of Mesh networks in the prior art mostly use external synchronization sources for synchronization.
However, in many environments (inside buildings, underground parking lots), it is impossible to receive synchronization reference signals or high-quality reference signals, which affects network synchronization performance. From this, it can be concluded that the solution using external synchronization sources depends on the external environment big sex
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[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0023] The terms "first" and "second" in this application are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. Furthermore, the terms "include...
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The present application discloses a method for synchronizing nodes in a wireless network. The method includes: acquiring frame header offset information of a reference node; calculating the first frame offset between the current node and the reference node at the current moment according to the frame header offset information; acquiring The second frame deviation of the current node and the reference node at the last moment; according to the size relationship between the first frame deviation and the second frame deviation, and in combination with the size of the first frame deviation, determine the adjustment value required for the crystal oscillator corresponding to the current node; On the basis of the initial value of the voltage control of the crystal oscillator, the voltage control of the crystal oscillator is compensated in real time according to the adjustment value so that the frequency of the current node and the reference node are synchronized or tend to be synchronized. According to the relationship between the first frame deviation and the second frame deviation, the present application determines the adjustment value required by the crystal oscillator in combination with the size of the first frame deviation, so as to achieve frequency synchronization between nodes without relying on an external synchronization source. The present application also provides a terminal device and a storage medium with a storage function.
Description
technical field [0001] The present application relates to the technical field of communication, and in particular to a method for synchronizing nodes in a wireless network, a terminal device and a storage medium. Background technique [0002] Wireless Mesh Network (Wireless Mesh Network) is a high-capacity, high-bandwidth distributed network, which can be regarded as the integration of wireless local area network WLAN and Ad hoc mobile ad hoc network. It can be big or small, it can be an office building or a city. The wireless Mesh network emphasizes the realization of multi-hops (Multi-Hops) wireless communication in a wide area. Based on the characteristics of this multi-hops wireless channel, the network system can be set up flexibly and has strong invulnerability. At any time, some network nodes with wireless transceiver systems in the network can be connected through wireless channels to form an arbitrary mesh topology, that is, data can be exchanged between any networ...
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IPC IPC(8): H04W56/00H04L27/26
CPCH04W56/0015H04L27/2657
Inventor 曹瑶安林峰喻该管鲍刘恒甫
Owner HYTERA COMM CORP