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AssigneeEricsson GE Mobile Communications Inc.
InventorsStephen D. Harrison, Charles P. Brame
Estimating the term…
Digitally trunked radio transceivers are permitted to roam over an extended coverage area including two or more digitally trunked radio frequency communication networks. Each network includes at least one digital repeater site having a corresponding site coverage area and serving digitally trunked radio transceivers disposed within or near the site coverage area. Each network also includes a local multisite switch for routing communications between the digital repeater sites within the networks. Site adjacency information is established for each site and communicated between the networks. Each digitally trunked transceiver maintains a site adjacency list for its currently selected site and modifies that list when the transceiver roams into a new site coverage area and selects a new repeater site.
A trunked communications system in which portable/mobile radio units roam from one geographical area to another over a wide area communications network, comprising:
A digitally trunked radio frequency communications system, including plural repeater sites having corresponding coverage areas, each site having one or more adjacent sites and serving mobile or portable digitally trunked radio transceivers disposed within the site's coverage area, for supporting digitally encoded radio transceiver communications over distributed control multisite switch networks that route communications between repeater sites within the system, comprising:
A method for permitting digitally trunked radio transceivers to roam over two or more digitally trunked radio frequency communications networks, each network including at least two digital repeater sites having a corresponding coverage areas adjacent to each other and serving digitally trunked radio transceivers disposed within or near the coverage areas, and each network including a local distributed control multisite switch for routing communications between said digital repeater sites within the networks, comprising steps of:
A method for permitting trunked radio transceivers to roam over two or more trunked radio frequency communications networks, each network including digital repeater sites having corresponding site coverage areas in a particular geographical site configuration and serving trunked radio transceivers disposed within or near the coverage areas, and each network including a digital switch for routing communications to and from said one or more repeater sites, wherein as trunked radio receivers roam over the two or more trunked radio frequency communications networks, geographical site configuration information is transferred between digital network switches.
Dependencies are inferred from the claim text.