Unlock instant, AI-driven research and patent intelligence for your innovation.

Transmission time delay measurement at transmission paths in a radio telecommunication system

A technology of transmission delay and transmission path, applied in radio transmission system, transmission system, communication between multiple stations, etc., can solve problems such as increased base station cost and lack of synchronization, and achieve the effect of increasing reliability and reducing cost

Inactive Publication Date: 2000-01-19
TELEFON AB LM ERICSSON (PUBL)
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] With this method, local synchronization between adjacent base stations can be achieved, but there is not a unified synchronization at the air interface of all base stations
In addition, the base station must have the processing power to perform the averaging procedure, which would unduly increase the cost of the base station

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
  • Transmission time delay measurement at transmission paths in a radio telecommunication system
  • Transmission time delay measurement at transmission paths in a radio telecommunication system
  • Transmission time delay measurement at transmission paths in a radio telecommunication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The invention will be illustrated in terms of its application to a cordless radiotelephone system, without intending to be limiting. For example a radiotelephone system operating according to the Digital Enhanced Cordless Telecommunications (DECT) standard, the Personal Handyphone System (PHS) standard or any cordless radio communication protocol such as CT0, CT1, CT3 etc. Furthermore, the invention can also be applied to mobile radio communication systems, such as systems operating according to the Global System for Mobile Communications (GSM) standard or any other mobile communication standard.

[0043] Figure 1 shows a cordless radio communication system, generally designated by the reference numeral 1, operating in accordance with the invention. The system 1 consists of three basic units: a central interface unit (CIU) or wireless switch 2, pocket radio access units (RAU) or base stations 3 distributed over the area to be covered and connected directly to the CIU 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

In a cordless (e.g. DECT) or cellular radio telecommunication system (1), comprising a plurality of radio access units (3) operatively connecting to a central interface unit (2), transmission time delays at transmission paths (11, 12, 13) between the central interface unit (2) and the radio access units (3) are established from time differences measured between the transmission and reception of radio signals by adjacent radio access units (3). Synchronous operation at the air interface (9) is obtained by compensation of the time delays at the transmission paths (11, 12, 13).

Description

field of invention [0001] The present invention relates to multi-cell mobile and cordless radio communication systems, and more particularly to transmission delay compensation in such radio communication systems. Background of the invention [0002] Cordless radio communication systems, such as those operating according to the Digital Enhanced Cordless Telecommunications (DECT) or Personal Handyphone System (PHS) standards, and microcell cellular mobile radios operating according to the Global System for Mobile Communications (GSM) standard The communication system includes a number of radio access units, each of which serves a relatively small area, the radius of which usually ranges from 10-100m for indoor applications to 5000m for outdoor applications. [0003] The actual radio access unit is connected to a central interface unit, which in turn is connected to, for example, a private automatic branch exchange (PABX), a public switched telephone network (PSTN) or an integr...

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): H04B7/26
CPCH04B7/2687
Inventor C·范德瓦特
Owner TELEFON AB LM ERICSSON (PUBL)
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com