US 2003/0207693 A1 · Data interface protocol for two-way radio communication systems

Abstract

A method and system is disclosed that allows for the designation of over 1,000,000 individual users in a communication system, such as an EDACS system, using the existing five-digit portion of command message utilized for specifying the destination address. This is accomplished by using an Extended Addressing Digital Interface (EADI) protocol using hexadecimal characters in the command message rather than decimal characters, thereby creating an “extended addressing” (EA) capability. The largest five-digit hexadecimal number, FFFFF, corresponds to the decimal number 1,048,575, thereby realizing the ability to exceed one million users, without having to change the size (number of digits) in the command message. Backward compatibility is assured by adding new mode commands that identify a particular command message as being generated by EA compatible equipment.

Claims14

Dependent claims

A method for managing the flow of information between a first transmitting/receiving (TR) device and a second TR device in a radio system comprising a plurality of TR devices, comprising the steps of:

transmitting a send request from said first TR device to said second TR device, said send request including logical ID (LID) information, in hexadecimal format, corresponding to at least one of said plurality of TR devices involved in the transmission;
receiving said send request at said second TR device;
and
identifying, at said second TR device, the identity of at least one of said plurality of TR devices involved in the transmission based on said LID information.

1 more element

Dependencies are inferred from the claim text.

Data interface protocol for two-way radio communication systems

Life of this patent

Data interface protocol for two-way radio communication systems

Life of this patent

Abstract

Claims14