Integration of physical and virtual lmr networks
AssigneeTait International Limited
InventorsNiall McAndrew, Nick Clark, Clive Douglas Horn, Steve Penny
Life of this patent
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Abstract
Integration of a land mobile radio (LMR) communications system and other wireless IP based systems such as LTE by way of a virtual router and virtual base stations. The LMR system may be either trunked or conventional. The virtual router maintains LMR IDs and also IP addresses for both physical and virtual base stations, multi bearer terminals and other components of the integrated system. Physical LMR base stations form a physical network. Virtual LMR base stations form a virtual network. These physical and virtual LMR networks communicate using ISSI, AIS or DFSI for example.
Claims14
A method of operating a router in a multi bearer radio system having an LMR bearer and an IP bearer, comprising:
- establishing device data in the router having an LMR ID and an individual IP address for each of a plurality of multi bearer devices in the system;
- establishing physical site data in the router having an LMR ID and an individual IP address for each of a plurality of physical LMR bearer base stations in the system;
- and
- establishing virtual site data in the router having an LMR ID and an individual IP address for each of a plurality of virtual LMR base stations in the system.
A method of operating a communication system combining LMR content and IP messaging, comprising:
- receiving IP messages containing LMR content from a multi-bearer device;
- determining at a router that the LMR content is LMR control information;
- forwarding the IP messages to a control channel subsystem;
- processing the LMR control information at the control channel subsystem;
- and
- sending IP messages containing processed LMR control information to a network controller subsystem.
A method of operating a communication system combining LMR content and IP messaging, comprising:
- receiving IP messages containing LMR content from a multi-bearer device;
- determining at a router that the LMR content is LMR traffic information;
- forwarding the IP messages to a traffic channel subsystem;
- processing the LMR traffic information at the traffic channel subsystem;
- and
- sending IP messages containing processed LMR traffic information to a network controller subsystem.
A communication system for multi-bearer devices, comprising:
- a first network having sites with cellular base stations;
- and
- a second network having sites with virtual LMR base stations, wherein the multi-bearer devices communicate with the cellular base stations using IP wireless messages, and
- wherein the cellular base stations communicate with the virtual LMR base stations through a router using IP messages.
Dependencies are inferred from the claim text.