Mobile communication system
US4947452A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 11, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Jan 11, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/32
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mobile communication system is provided wherein a plurality of signposts enable communications among mobile stations and a switching system in a predetermined communicating area, and are connected through a transmission network connected to a fixed network according to the invention, each of the signposts has dual zone communications ability including a communicating area which overlaps the communicating areas or adjacent signposts, and a zone switching signal area which does not overlap the zone switching signal areas of adjacent signposts. The signpost and mobile stations, jointly detect on-going signal levels of the mobile station, and communication area switching operation are carried out as needed. In the mobile communication system of the invention, a transmitting and receiving equipment can be a single transceiver which switches over the frequencies to communicating channel frequencies and to zone switching controlling frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.