Method for the transmission of digital data in radio paging systems and corresponding radio paging receiver
US5452288A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 6, 1993 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Apr 6, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0052
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for the transmission of digital data elements including radio paging information elements, wherein the data elements are transmitted according to a technique of transmission implementing a plurality of orthogonal carrier frequencies (the COFDM technique), the signal being organized in frames comprising, firstly, at least one first channel called a fast information channel, comprising at least one symbol of data elements, the carrier frequencies of the symbols being modulated by data elements that are not temporally interleaved, and at least one second channel, called a main channel, comprising at least one symbol of data elements, the carrier frequencies of the symbols being modulated by data elements that are temporally interleaved beforehand, a frame number belonging to a set of predefined frame numbers being regularly inserted into the fast information channel, each of the radio paging receivers being assigned at least one of the frame numbers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.