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Method and system for synchronizing time sequence among multiple signal shielding devices based on LTE network frame information

A technology of signal shielding and synchronous timing, which is applied in the direction of synchronous devices, interference to communication, wireless communication, etc., can solve the problems of high failure rate, aggravate investment cost, high cost, etc., and achieve the effect of convenient use, flexible installation and low cost

Active Publication Date: 2016-02-24
ZHEJIANG SUNWAVE COMM TECH CO LTD
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Problems solved by technology

However, this solution has problems such as high failure rate, high cost, difficult installation and addressing of GPS antenna, large installation engineering volume, increased investment cost and difficult maintenance. It is necessary to solve the time synchronization problem by other means

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  • Method and system for synchronizing time sequence among multiple signal shielding devices based on LTE network frame information
  • Method and system for synchronizing time sequence among multiple signal shielding devices based on LTE network frame information
  • Method and system for synchronizing time sequence among multiple signal shielding devices based on LTE network frame information

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Embodiment Construction

[0029] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0030] like figure 1 , image 3 , Figure 5 As shown, a method and system for synchronizing timing between multiple signal shielding devices based on LTE network frame information, the system includes a MIB decoding module 11, a synchronizing timing module 12, and a logic judgment module 13, wherein the MIB decoding module 11 is used for Receive the PSS and SSS synchronization signals of the base station to obtain the LTE frame header, and decode the MIB to obtain the frame number of the system frame; the synchronization timing module 12, according to the obtained decoded frame header and frame number, searches to obtain the identification frame A 0 position, obtain clock synchronization, and then perform N system frame cycle cycles to obtain the identification frame position A 1 ~A n , and decode the above-mentioned frame frame number by MI...

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Abstract

The invention discloses a method and a system for synchronizing time sequence among multiple signal shielding devices based on LTE network frame information. The main content of the invention comprises steps of appointing a system frame cycle period of an LTE as a working period of the shielding system and appointing two system frames of the LTE system, wherein one system frame is an identification frame A0 (for identification not for shielding), and the other system frame is an extraction frame B0 (for forwarding shielding). The method disclosed by the invention comprises steps of obtaining an LTE frame head through PSS and SSS, decoding MIB information through an MIC decoding module to obtain synchronization, obtaining a system frame number, obtaining an identification frame A0 position to obtain time synchronization according to the decoding frame head and the frame number which are obtained through the step 1, performing N system cycle periods to obtain identification frame positions A1-An, decoding the frame number through the MIB decoding module, determining whether the numbers of the A1-An are identical to that of the A0, and if yes, determining the time sequence of the signal shielding system is synchronized with the base station.

Description

technical field [0001] The present invention relates to the technical field of wireless mobile communication, more specifically, it relates to a method and system for synchronizing timing among multiple signal shielding devices based on LTE network frame information. Background technique [0002] The mobile phone signal shielding system is mainly used in various examination rooms, schools, gas stations, conference centers, prisons, public security, military and other places where the use of mobile phones is prohibited. At present, the shielding system based on store-and-forward requires clock synchronization when multiple sets work in close proximity; otherwise, due to asynchrony, the signal retransmitted by other shielding systems (not purely the signal of the base station) is received, which will cause the system power to rise and saturate and the shielding will fail. . By synchronizing the clock, everyone can turn off the shielding and turn on the signal of the receiving...

Claims

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Application Information

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IPC IPC(8): H04W56/00H04K3/00
CPCH04K3/25H04K3/80H04W56/001
Inventor 曹永福张宏亮翟海莹
Owner ZHEJIANG SUNWAVE COMM TECH CO LTD
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