1908 Radiotelephone link between Brittany and Paris

A measure of interference in the frist radio communication channel providing the radio communication link is determined.

The radio communication link may be provided by communicating a signal in a first radio communication channel between the first central site antenna (202) and the mobile unit (228).

Samara and China will be linked by a direct railway connection.

The space-based component is configured to provide wireless radiotelephone communications using satellite radiotelephone frequencies.

Novel mechanisms are disclosed by which the handset user is given up-to-date information concerning radio link parameters.

Similarly, the radio communication link may be provided by communicating a signal in a second radio communication channel between the second central site antenna (216) and the mobile unit (228).

A method and apparatus is provided for reducing interference in a radio communication link from a central site (230) to a mobile unit (228) in a cellular communication system.

In personal communications sytems, a wireless handset user is not generally aware of the quality of the radio link to the base station when a call is in progress.