Signal processing method in mobile terminal random access process

A random access process and mobile terminal technology, applied in wireless communication, electrical components, transmission systems, etc., can solve the problems of access failure, collision of mobile terminals, inability to correctly combine multipath signals, etc., to avoid access failure, Improve the connection rate and make accurate and reasonable judgments

Inactive Publication Date: 2008-05-14
HUAWEI TECH CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the disadvantage of the signal processing method in the random access process of mobile terminals in the prior art is: when multiple mobile terminals initiate random access, if their access prefixes are the same, the system performs signal processing on the access signals At this time, the multipath signals from different mobile terminals cannot be correctly combined, resulting in the access failure of mobile terminals due to access collisions

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
  • Signal processing method in mobile terminal random access process
  • Signal processing method in mobile terminal random access process
  • Signal processing method in mobile terminal random access process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The method for signal processing in the mobile terminal random access process described in the present invention is aimed at the prior art. When multiple mobile terminals initiate random access, if their prefix signature codes are the same, the system cannot distinguish between multiple mobile terminals. The access collision phenomenon initiated by the terminal is also raised by the multipath effect caused by the random access initiated by a single mobile terminal passing through the multipath propagation environment.

[0028] When using the method of the present invention to process the access signal randomly accessed by the mobile terminal, first obtain the different arrival times of the multipath signal according to the pre-configured prefix signature code of the cell; then according to the maximum range value of the multipath distribution The access signals of the mobile terminals are combined.

[0029] The core of the present invention is to select different maximu...

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 discloses a signal processing method in mobile terminal random access process, which comprises: first, catching arrival time of different access signal according to configured prefix feature code of subzone; combining the said access signal according to maximal range value of multidimensional distribution determined by base station. This invention avoids access failure, and improves system access rate.

Description

technical field [0001] The present invention relates to a random access process of a mobile terminal in the field of wireless communication, in particular to a signal processing method in the random access process of a mobile terminal, and in particular to a processing method for access signals before multipath combining in the random access process . Background technique [0002] The random access method of the mobile terminal in the WCDMA system is based on the slotted ALOHA (random access collision method) with fast acquisition indication. A mobile terminal can start transmission in a predefined access slot. The structure of the information transmitted by the mobile terminal during the random access process is as follows: figure 1 As shown, it includes one or more prefix signatures with a length of 4096 chips and a message part with a length of 10ms or 20ms. The mobile terminal first initiates an access request carrying a prefix feature code. The base station captures ...

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): H04Q7/38H04B7/02H04W74/08H04B1/707
Inventor 吕武
Owner HUAWEI TECH 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