Systems and methods for communicating messages to disadvantaged mobile user terminals

A user terminal and message technology, applied in the field of wireless telephone satellite communication, to achieve power saving and increase the probability of successful reception

Inactive Publication Date: 2002-05-22
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This delay occurs because the page may not be sent on the paging channel for the length of the message sent, this delay may be several seconds

Method used

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  • Systems and methods for communicating messages to disadvantaged mobile user terminals
  • Systems and methods for communicating messages to disadvantaged mobile user terminals
  • Systems and methods for communicating messages to disadvantaged mobile user terminals

Examples

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Embodiment Construction

[0030] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art . Like reference numerals refer to like elements throughout the specification.

[0031]The invention is described herein using flowcharts that illustrate the operation of the invention. It will be understood that each block of the flowchart illustrations, and combinations of blocks in the flowchart illustrations, can be implemented by computer program instructions. These program instructions may be provided to processors within the satellite communication system and / or mobile user terminal, such that the instructions executed on these...

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PUM

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Abstract

Satellite communications systems include a base station configured to communicate messages to disadvantaged mobile radiotelephone terminals. A mobile radiotelephone terminal receives a communication from a base station via a first high power paging channel and, if disadvantaged, monitors a second high power forward-only radiotelephone channel identified in the communication. The base station, upon determining that the mobile radiotelephone is disadvantaged, broadcasts the pending message to the mobile radiotelephone terminal via the second forward-only radiotelephone channel.

Description

field of invention [0001] This invention relates generally to communications, and more particularly to radiotelephone satellite communications. Background of the invention [0002] In a Time Division Multiple Access (TDMA) cellular telephone system, such as the terrestrial Global System for Mobile communications (GSM), communications between mobile user terminals and base stations may require the establishment of duplex channels. Conventionally, the transmission of messages such as paging (i.e., a call or message addressed to a particular mobile user terminal) is not acknowledged on a one-way (i.e., forward only) common control channel that can be monitored by all mobile user terminals. indication) and broadcast information (ie, information sent to all mobile user terminals within range of the base station). If messages other than pages are to be sent to a particular mobile user terminal, an additional dedicated channel is typically allocated to establish two-way communicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04W68/00H04W68/02
CPCH04B7/18567H04W68/02
Inventor L·W·马辛吉尔T·W·瑟尔维R·E·维斯Y·-P·E·王K·巴拉钱德兰
Owner TELEFON AB LM ERICSSON (PUBL)
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