Method and device for detecting primary synchronization signal and method and system for searching neighborhoods

A technology of master synchronous signal and synchronous signal, which is applied in transmission system, digital transmission system, modulated carrier system, etc. It can solve the problem of PSS false detection when integer multiple frequency offset, and achieve the effect of avoiding PSS detection error and improving accuracy

Active Publication Date: 2012-05-16
DATANG MOBILE COMM EQUIP CO LTD
View PDF4 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The present invention provides a primary synchronization signal detection method and device to solve the problem of PSS false detection when there is an integer multiple frequency offset

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
  • Method and device for detecting primary synchronization signal and method and system for searching neighborhoods
  • Method and device for detecting primary synchronization signal and method and system for searching neighborhoods
  • Method and device for detecting primary synchronization signal and method and system for searching neighborhoods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0057] During the cell search process, the present invention proposes a solution to the primary synchronization signal (PSS) detection error caused by integer multiple frequency offsets in the system. The integer multiple frequency offset value is obtained, and then the integer multiple frequency offset compensation is performed on the received signal, and then follow-up operations such as cell ID detection are continued, thereby improving the performance of PSS detection.

[0058] Based on the above solutions, and by analyzing various possible causes of primary synchronization signal (PSS) misdetection, the present invention proposes three solutions, which will be described in detail through embodiments below.

[0059] First, the s...

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 method and device for detecting a primary synchronization signal so as to solve the problem of the false detection of the primary synchronization signal (PSS) caused by the existence of integer-frequency-offset. The method comprises the following steps of: firstly determining an integer-frequency-offset value in the PSS detection process in the first step of neighborhood searching, then carrying out integer-frequency-offset compensation on a receipt signal, and continuing to carry out follow-up operations such as the ID detection of the neighborhoods and the like, thereby avoiding the false detection of the PSS caused by the frequency-offset as far as possible, effectively increasing the accuracy of the PSS detection and further ensuring UE (User Equipment) to be capable of normally residing in a network. Based on the method, the invention provides three specific solutions which are used for analyzing various possible reasons causing the false detection of the PSS and can be flexibly selected according to different PSS detecting methods. In addition, the invention also provides a method and system for searching the neighborhoods based on the primary synchronization signal detection, which can increase the accuracy of neighborhood detection.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a primary synchronization signal detection method and device, and also relates to a cell search method and system based on the primary synchronization signal detection. Background technique [0002] The cell search process is a very critical process in wireless cellular communication, and it is a prerequisite for establishing a communication link between a user terminal (UE) and a base station. The main functions of the cell search are: during the UE's initial access or cell switching process, it can quickly capture the cell and identify the cell; complete the downlink time synchronization and downlink frequency synchronization of the cell; and read the broadcast information of the cell to perform normal camping . [0003] In the Long Term Evolution (LTE, Long Term Evolution) system, the cell search mechanism adopts a hierarchical cell search, that is, to complete the d...

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 Applications(China)
IPC IPC(8): H04W24/02H04W24/04H04W48/16
CPCH04L27/2659H04J11/0073
Inventor 张凌雁李琼
Owner DATANG MOBILE COMM EQUIP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap