A METHOD, UTILIZING MULTICASTING OF DATA, FOR ALLOWING SUBSCRIBER SCAN OPERATION IN A CONVENTIONAL INTEGRATED VOICE / DATA SYSTEM
Original Publication Date: 1997-Sep-01
Included in the Prior Art Database: 2002-Jun-10
Today's conventional voice / data systems allow a subscriber to use scan for voice operations. However scan is not allowed when data reception is a requirement. This is due to the fact that an outbound data message packet is an unsolicited asynchronous event that is difftcult to receive with zero errors while in scan. The act of changing fre- quencies is bound to leave the radio in most cases either on the wrong frequency or appearing on the correct frequency at the wrong time so as to miss important parts of the data packet. This results in missed packets and an avalanche of retries developing in the system.