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Method, device and system for base station time synchronization algorithm

A technology of time synchronization and reference time, applied in the directions of synchronization devices, wireless communication, electrical components, etc., can solve the problems of reducing card capacity, reducing anchor receiving time, etc., to improve receiving capacity, improving base station receiving capacity and reducing receiving time. Effect

Active Publication Date: 2018-11-13
BEIJING YONGANXINTONG TECH CO LTD
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Problems solved by technology

However, in this method, the master anchor periodically sends data, which relatively reduces the receiving time of the anchor, thereby reducing the received card capacity

Method used

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  • Method, device and system for base station time synchronization algorithm
  • Method, device and system for base station time synchronization algorithm
  • Method, device and system for base station time synchronization algorithm

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Embodiment Construction

[0029] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0030] On the one hand, the present invention provides a method for a base station time synchronization algorithm, which is used in a tag positioning system, such as figure 1 As shown, the tag positioning system includes the tag to be positioned, the first base station anchor1 and the second base station anchor2, the tag sends the first signal data at time t1, and the time when anchor1 and anchor2 receive the first signal data is t2 and t3 respectively; tag Keep still and send out the second signal data at t1' time, the time when anchor1 and anchor2 receive the second signal data is t2' and t3' respectively, such as figure 2 As shown, the base station time synchronization method includes:

[0031] S1: Get t1, t1', t2, t2', t3 and t3';

[0032] S2: The...

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Abstract

The invention discloses a method, a device and a system for a base station time synchronization algorithm, and belongs to the field of wireless positioning. The method is applied to a tag positioning system. The tag positioning system comprises a tag to be positioned, a first base station anchor1 and a second base station anchor2, wherein the tag transmits first signal data at time t1; the anchor1 and the anchor2 receive the first signal data at time t2 and time t3 respectively; the tag transmits second signal data while keeping static at time t1'; and the anchor1 and the anchor2 receive the second signal data at time t2' and time t3' respectively. The method comprises the following steps: 1, acquiring the t1, the t1', the t2, the t2', the t3 and the t3'; and 2, performing time synchronization on the anchor1 and the anchor2 by using a clock cumulative deviation T, wherein the clock cumulative deviation T of the anchor1 and the anchor2 within a time period from the t1 to the t2' is equal to (t2'-t2)-(t3'-t3). Compared with the prior art, the method, the device and the system have the characteristics of low hardware equipment cost and increase of the base station receiving capacity.

Description

technical field [0001] The present invention relates to the field of wireless positioning, in particular to a method, device and system for a base station time synchronization algorithm. Background technique [0002] In the tag positioning system of the prior art, because each base station Anchor has its own clock source, there are frequency differences, and these frequency differences are not fixed and vary with temperature everywhere. In order to achieve base station time synchronization, the wired time difference of arrival TDOA time synchronization method is adopted, that is, the distance between the anchors of each base station in the system is known, and the frequency generator is used to generate the clock frequency, which is sent to the anchor in the system through the cable as the anchor clock source, so as to realize the time synchronization of the base station. In this method, because the wired transmission frequency is used, the cost of hardware equipment is incr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
CPCH04W56/0015H04W56/0035
Inventor 聂娟
Owner BEIJING YONGANXINTONG TECH CO LTD
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