US4644351A

3G,2G

Title

Two way personal message system with extended coverage

Application Number:

US19840608334

Publication Date:

17-02-1987

Current Assignee:

Family ID:

Application Date:

08-05-1984

Publication Country:

US

Priority Date:

08-05-1984

Declaring Company:

Abstract  Abstract

A communications system for carrying messages via a radio channel between one central site of a plurality of central sites and a plurality of two-way remote data units is disclosed. Each central site has a radio coverage area and each remote unit has a unique address and association with one of the central sites. When a message addressed to one of the remote units is received in a central site a file of remote unit addresses is searched to find the location and central site association of the remote unit to which the message is addressed. If an address match is found indicating that the remote transceiver is in the coverage area of the message-receiving central site the addressed message is stored and transmitted in that site. If an address match is found indicating that the remote transceiver is in another central site the addressed message is conveyed to that site for transmission.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent

Implicitly disclosed patent

Basis patent

Family member