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Method ands ystem for exchange of signals in communications network

A communication system and telecommunication network technology, applied in network topology, wireless communication, electrical components, etc., can solve problems such as uncomplicated communication devices and public telecommunication networks

Inactive Publication Date: 2004-06-09
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention concerns the problem of establishing a connection between a communication device and a public telecommunication network in a manner that is uncomplicated for the user

Method used

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  • Method ands ystem for exchange of signals in communications network
  • Method ands ystem for exchange of signals in communications network
  • Method ands ystem for exchange of signals in communications network

Examples

Experimental program
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no. 1 example

[0163] The transceiver 200 modulates the message Mt received by the port 232 and as a result provides a transmit signal to the antenna 80 . According to the first embodiment, radio communication is performed using frequency multiplexing FDMA.

[0164] Such as Figure 6 As shown, the transceiver 200 includes a high frequency generator 500 that can provide a carrier frequency signal. High frequency generator 500 is connected to modulator 510 which is also connected to port 232 . Modulator 510 is arranged to modulate the message Mt on a carrier frequency signal and provide the resulting transmitted signal to output 230 .

[0165] Using the computer unit 520, the frequency of the carrier frequency signal can be checked and controlled in order to achieve frequency multiplexing. In this way, for example, different traffic channels CH1 and CH2 can be respectively specified by different carrier frequencies.

[0166] According to a second embodiment, the radio communication is base...

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PUM

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Abstract

The invention relates to a communication system (110) and a method for the exchange of signals between a public telecommunication network (20) and at least one communication arrangement (100) via the communication system (110). The communication system comprises a network adapter unit (60) comprising a first signal port (65) which is connectable to the public telecommunication network (20) and a second signal port (340). It further comprises at least one subscriber adapter unit (70) comprising a third signal port for the exchange of signals with the second signal port, and a fourth signal port which is connectable to the communication arrangement (100). The subscriber adapter unit (70) is arranged to initiate a communication session in response to a connection signal. The network adapter unit (60) is arranged to produce a completion message at the network adapter unit (60) in response to reception, on the first signal port (65), of a disconnection signal from the public telecommunication network (20).

Description

technical field [0001] The invention relates to a method of exchanging signals in a communication network. The invention also relates to a communication system connectable to a public telecommunication network. Background technique [0002] Conventional public telecommunications networks are based on the use of fixed line connections to connect telephone sets and other communication devices to telecommunications network switches. A signal such as an incoming telephone number generated by a telephone is transmitted in a standard manner via connecting lines to an exchange in the telecommunications network. It is also known to connect a dedicated telephone set to the public telecommunication network via a radio connection. [0003] US patent 5117450 describes a dedicated telephone comprising a radio transceiver and a microcomputer with memory. Each entered digit is stored in the memory when a telephone session is initiated by the telephone, and a validity check of the entere...

Claims

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Application Information

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IPC IPC(8): H04W84/14
CPCH04W84/14
Inventor P·-A·明波尔H·-O·桑德尔J·皮尔波尔M·约翰森C·伦奎斯特T·拉尔森
Owner TELEFON AB LM ERICSSON (PUBL)