System and method for channel allocation in a radio telephone system for an underground railway
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 26, 1999
Grant Date -
N/A
app pub date -
Aug 6, 1997
filing date -
Dec 19, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A radio telephone system is installed in an underground railway system. The telephone system has base stations A, B at respective railway stations 1, 2 and the base stations serve leaky cables serving the railway stations and further cables extending along the tunnel bores interconnecting the railway stations. To improve the availability of channels available as station calls to users of mobile radios within the areas of the railway stations, switches 20 are incorporated to prevent any channel occupied as a station call being directed into the cable serving the tunnel. This enables channels allocated as train call channels at one base station to be re-used as station call channels at an adjacent base station.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully