Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Symbol timing synchronization method and symbol timing synchronization system

A technology of symbol timing synchronization and main synchronization signal, which is applied in the directions of synchronization devices, electrical components, wireless communication, etc., can solve the problem of unable to accurately realize symbol timing synchronization, and achieve the effect of realizing symbol timing synchronization and improving the success rate.

Active Publication Date: 2014-09-03
DATANG MOBILE COMM EQUIP CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application provides a symbol timing synchronization method and system, which can solve the problem that the initial cell search cannot accurately achieve symbol timing synchronization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Symbol timing synchronization method and symbol timing synchronization system
  • Symbol timing synchronization method and symbol timing synchronization system
  • Symbol timing synchronization method and symbol timing synchronization system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] refer to figure 1 , showing Embodiment 1 of a symbol timing synchronization method of the present application, including the following steps:

[0061] Step 101, determine the distance between the main synchronization signal and the uplink signal.

[0062] refer to figure 2 , showing a frame structure, the length of the frame structure is 10ms, including 2 half-frames, and each half-frame includes five subframes (subframe 0 to subframe 4 and subframe 5 to subframe 9), where One is a special subframe (subframe 1 and subframe 6). The total length of the downlink time slot (DwPTS, downlink signal), guard time slot (GP, protection signal) and uplink time slot (UpPTS, uplink signal) in the special subframe is fixed at 30720Ts, and the primary synchronization signal (PSC) is the downlink signal A part of , that is, the part marked as 2 in the figure. The distance between the main synchronization signal and the uplink signal refers to the sum of the length of the part afte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a symbol timing synchronization method. The method comprises the steps of determining a distance between a master synchronization signal and an uplink signal; determining length of detection windows, wherein the length of the detection windows is less than or equal to the distance between the master synchronization signal and the uplink signal; determining quantity of the detection windows according to length of a master synchronization signal time-domain correlative sequence and the length of the detection windows; calculating a peak-to-average power ratio of each of the detection windows; and selecting the maximum value from all the peak-to-average power ratios, and achieving symbol timing synchronization by determining the position of the maximum value as the timing synchronization position. The invention also provides a symbol timing synchronization system implementing the method. By the aid of the symbol timing synchronization method and the symbol timing synchronization system, symbol timing synchronization can be accurately achieved during initial cell search.

Description

technical field [0001] The present application relates to the technical field of wireless signal processing, and in particular to a symbol timing synchronization method and system. Background technique [0002] With the continuous development of mobile communication and broadband wireless access technology, Long Term Evolution (LTE) technology has become the mainstream technology of the new generation of mobile communication due to its high transmission rate, small user plane delay and support for high-speed mobile terminals. . For a cellular mobile communication system, initial cell search is the first step for a mobile terminal to access a wireless network, and it is one of the most basic processes at the physical layer. When the terminal is powered on for the first time to access a cell or is handed over, it is necessary to conduct an initial cell search to establish time-frequency synchronization, obtain the physical layer cell identifier and other system configuration ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
Inventor 邵青
Owner DATANG MOBILE COMM EQUIP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com