Device of implementing accuracy timing between base band and radio frequency in wireless communication system

A wireless communication and precise timing technology, which is applied in the communication between multiple stations, synchronization devices, transmission systems, etc., and can solve the problems of not being able to directly obtain long-term time scales and wasting bandwidth.

Active Publication Date: 2004-10-27
ZTE CORP
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After finding the frame boundary, the framing can be completed, but the long-term time scale cannot be obtained directly
Therefore, there is a need for a

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
  • Device of implementing accuracy timing between base band and radio frequency in wireless communication system
  • Device of implementing accuracy timing between base band and radio frequency in wireless communication system
  • Device of implementing accuracy timing between base band and radio frequency in wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention mainly describes how the frame generation and frame extraction circuit transmits and obtains the frame boundary, and how the time mark insertion and extraction circuit transmits and obtains the time mark.

[0033] In the mobile communication system, the forward and backward signals from baseband to radio frequency are all fixed-rate data after baseband modulation. Therefore, the frame length is specified as a fixed value. For each frame, a frame header flag is set as a special overhead field in the frame structure.

[0034] Such as figure 2 As shown, it is a schematic structural diagram of a preferred embodiment of the device for realizing precise timing between the baseband and radio frequency of the wireless communication system of the present invention. The frame header insertion circuit 21 and the data insertion circuit 22 are located on the transmitting side of the baseband-remote radio frequency interface. , Implied time stamp insertion circuit 2...

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 device includes circuits located at transmitting side of interface between base band and remote radio frequency: frame head insertion circuit, data insertion circuit, hidden timing mark insertion circuit as well as circuits located at receiving side: frame head matching circuit, frame head locking circuit, and data recovery circuit. Hidden timing mark insertion circuit inserts timing marks into frame data generated after processed by the frame head insertion circuit and data insertion circuit so as to obtain frame structure with hidden timing marks. At receiving side, frame structure with hidden timing marks is sent to frame head matching circuit and data recovery circuit. The frame head matching circuit finds out possible frame head sign, and frame head locking circuit locks real frame head, and data recovery circuit recovers data. Receiving output from frame head matching circuit, timing mark locking circuit locks output timing mark.

Description

Technical field [0001] The invention relates to a wireless communication system, in particular to a device capable of realizing precise timing between the baseband and radio frequency of the wireless communication system. Background technique [0002] Some wireless communication systems require high-precision timing, and the cost of accurate timing sources is relatively high. In order to reduce costs, for a base station system, generally only a precise timing system is configured in the baseband. For the radio frequency part, the clock needs to be transmitted from the baseband to the radio frequency. [0003] For base stations installed on the same site with the baseband and radio frequency parts, the clock can be transmitted through a dedicated clock line. For a base station system where the baseband and the radio frequency are separated, it is difficult to set up a dedicated clock line, and the cost is high, and the reliability is poor. Therefore, it is generally multiplexed in...

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
IPC IPC(8): H04B7/26H04L7/02H04L29/10
Inventor 向际鹰熊乐进李江肖俊民
Owner ZTE CORP
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