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A Synchronization Method for Single Area Positioning Base Station and Positioning Terminal

A technology for regional positioning and terminal positioning, applied in the field of communication, can solve the problems of high system cost and high hardware requirements, and achieve the effect of simple operation and low cost

Active Publication Date: 2022-02-22
杭州微萤科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing synchronization methods have high hardware requirements and high system costs

Method used

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  • A Synchronization Method for Single Area Positioning Base Station and Positioning Terminal
  • A Synchronization Method for Single Area Positioning Base Station and Positioning Terminal
  • A Synchronization Method for Single Area Positioning Base Station and Positioning Terminal

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Synchronization between base stations:

[0035] main base station A 0 At time (k-1) to ordinary base station A i Send a wireless signal, the transmission time stamp is T 0 (k-1), ordinary base station A i Received wireless signal record receiving time stamp R i0 (k-1). Similarly, at time k, transmit timestamp T 0 (k), received timestamp R i0 (k). pass get β i0 (k), that is, the ordinary base station A i Relative to main base station A 0 The crystal drift coefficient. Assume that the common base station A i and primary base station A 0 The distance between is D i , C is the speed of light, then the flight time is Generally speaking, a common base station A i and primary base station A 0 The position of F does not change, so F i0 Generally a fixed value. by R i0 (k)-F i0 -T 0 (k) can get α i0 , that is, the common base station A i with main base station A 0 The start time difference between.

[0036] Ordinary base station A i The launch ti...

Embodiment 2

[0043] Embodiment 2: Network-wide chain synchronization of base stations

[0044] Due to the influence of various obstacles, the signal reception of the base station will be affected, resulting in some base stations being unable to receive the signal of the main base station, which has a great impact on the synchronization of the entire network. Therefore, it is possible to form a chain synchronization between the base station that cannot receive the signal of the main base station and the adjacent base station, and complete the synchronization of the remote base station.

[0045] As an embodiment of the present disclosure, chain synchronization can be implemented between base stations, such as Figure 5 , main base station A 0 (that is, the first-level base station) to the second-level base station A 1 Send the frame, record the transmission timestamp T 0 (k); second level base station A 1 Receive frame, record receive timestamp R 1 0 (k); According to the obtained trans...

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Abstract

The present disclosure discloses a synchronization method for positioning a base station and positioning a terminal in a single area, including the synchronization between the terminal and the base station and the synchronization between various base stations. The main synchronization process is as follows: each base station sends a frame to the terminal or base station, and records the sending time stamp; the terminal or base station receives the frame sent by the base station, and records the receiving time stamp; thus, the drift coefficient of the crystal oscillator is obtained, and the receiving time stamp of the terminal or base station is synchronized to The base station, to realize the synchronization between the base station and the terminal. The synchronization method of the present disclosure utilizes the crystal oscillator drift coefficient to realize the synchronization between the base station and the terminal and the synchronization between the base stations, has low requirements on networking hardware, and can greatly reduce the cost of the system.

Description

technical field [0001] The present disclosure relates to the communication field, and in particular to a method for synchronizing a single-area positioning base station and a positioning terminal. Background technique [0002] In the positioning system, the problems caused by the synchronization of the positioning base station and the positioning terminal directly affect the positioning accuracy. Existing synchronization methods have high requirements on hardware and high system cost. Contents of the invention [0003] In order to solve the above technical problems, the present disclosure provides the following synchronization method solutions: [0004] The present disclosure provides a method for synchronizing a single-area positioning base station and a positioning terminal, including the following steps: [0005] (1) Base station A and mobile terminal Tag are set in a single area, and the base station A is composed of a main base station A 0 and more than one common ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04J3/06
CPCH04W56/001H04J3/0661
Inventor 楼喜中蒋汝雯
Owner 杭州微萤科技有限公司
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