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A radio telecommunication system

A wireless communication system and wireless communication technology, applied in the field of telecommunication systems of fixed and/or mobile wireless communication units, can solve the problems of transmission cost and constraints, and achieve the effect of reducing transmission and installation costs and improving maintainability

Inactive Publication Date: 2003-12-24
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In such prior art RLL systems, where the geographical distance between the RE and the switches of the PSTN, for example, can reach as large as several kilometers, transmission overhead will be a major source of expense
Moreover, the required high data rates place severe constraints on the available transmission media

Method used

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  • A radio telecommunication system
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Examples

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Embodiment Construction

[0054] Without limitation, the invention will now be illustrated by means of an embodiment of an RLL telephone system operating under the DECT (Digital European Cordless Telecommunications) standard. DECT is the mandatory European standard used for all digital cordless telecommunication systems, ie in office environments (eg in offices) or in residential areas (eg in RLLs). Reference may be made to the aforementioned article by C. Buckingham et al.

[0055] Figure 1 shows a prior art DECT RLL system, generally designated by the reference numeral 1, such as described in the above-mentioned brochure on Ericsson Office Mobile Networks B.V. for base station Ericsson Freeset Equipment. The system consists of four main components: a central interface unit (CIU), also known as a radio exchange (RE) 2, a number of small radio base stations or radio access units 3, which are installed in the area to be The line 10 connects directly to the CIU 2; a cordless or wireless handy phone or h...

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Abstract

A radio communication system, comprising a plurality of geographically spread radio access units for establishing radio link connections with a plurality of geographically spread remote radio communication units. The radio access units have access to a public telecommunication network through a central interface unit. The central interface unit is positioned at or close to a public or community network exchange site, such to support a connection between the central interface unit and the network exchange on a communication channel associated basis. The radio communication system can be used for Radio in the Local Loop (RLL) applications, based on the Digital European Cordless Telecommunications (DECT) radio access technology, for example.

Description

technical field [0001] The present invention relates generally to telecommunication systems comprising wireless link connections between two or more telecommunication units, and more particularly to telecommunication systems having a plurality of geographically dispersed fixed and / or mobile wireless communication units. Background technique [0002] Wireless telecommunications systems, such as the well-known cellular mobile telephone systems and cordless telephone and data transmission systems, typically include mobile or hand-held wireless subscriber units, a plurality of wireless base stations (each base station provides a plurality of wireless communication channels for communication between the base station and the mobile wireless Geographical area or cell defined by the unit's range of action), and a central interface unit (CIU) (or central unit also known as a radio exchange (RE) or mobile telephone switching office (MTSO)) connected to a base station. The CIU is in tu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/00H04B7/26H04W84/08H04W84/14
CPCH04W84/14
Inventor P·H·G·范德伯格J·贾格尔H·I·奥斯特伯格S·O·林奎斯特
Owner TELEFON AB LM ERICSSON (PUBL)