RADIO FREQUENCY MULTICASTING
First Claim
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1. A multicast site architecture for communicating land mobile radio (LMR) content, said multicast site architecture comprising:
- a plurality of communication sites; and
an LMR over Internet Protocol (IP) interface associated with at least one of said plurality of communication sites, said LMR over IP interface configuredto transmit call control and signaling information to a plurality of LMR units using at least one control multicast IP address, andto assign traffic multicast IP addresses to a plurality of talkgroups for communicating LMR content between LMR units of said plurality of LMR units which subscribe to at least one of said plurality of talkgroups.
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Abstract
A method for radio frequency multicasting and a multicast site architecture are provided. The method includes assigning a different traffic multicast Internet Protocol (IP) address to each of a plurality of groups of LMR users and encapsulating the LMR content within IP packets. The method further includes transmitting the IP packets to one of the plurality of groups of LMR users using at least one of the assigned traffic multicast IP addresses.
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Citations
14 Claims
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1. A multicast site architecture for communicating land mobile radio (LMR) content, said multicast site architecture comprising:
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a plurality of communication sites; and an LMR over Internet Protocol (IP) interface associated with at least one of said plurality of communication sites, said LMR over IP interface configured to transmit call control and signaling information to a plurality of LMR units using at least one control multicast IP address, and to assign traffic multicast IP addresses to a plurality of talkgroups for communicating LMR content between LMR units of said plurality of LMR units which subscribe to at least one of said plurality of talkgroups. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification