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IP.com Disclosure Number: IPCOM000007287D
Original Publication Date: 1994-Oct-01
Included in the Prior Art Database: 2002-Mar-12

Publishing Venue


Related People

Dan McDonald Mike Sasuta Mark Shaughnwsy


A major feature of a communication system is the ability to provide communication amongst com- munication units that are in a common group. This is referred to as a group call. Group calls occur in a broadcast fashion such that when a group call trans- mission occurs, there is no automatic mechanism for the sender to determine if all members in the group received the transmission. When a group call occurs, some members of a group may not be able to receive a message as well as others, to the extreme of not at all. This may be due, for example, to a receiving member being in a poor coverage area. In the case of group call communication, neither the sender nor the communication system infrastructure has knowledge as to who has and who has not received a message adequately.