Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system
First Claim
1. A remote network switch for a land mobile transmission trunked communication system, the land mobile transmission trunked communication system having a plurality of transceiver means for transmitting and receiving radio communications over one or more radio channels, the remote network switch comprising:
- a plurality of repeater sites, each repeater site comprising a plurality of repeater means, each repeater means for establishing transmission trunked radio communications on a preassigned one of the radio channels between the repeater means and one or more transceiver means, the transmission trunked communications having either voice information, data information, or both, and a control signal, and the plurality of repeater means at a repeater site operably connected together by a high speed bus means for synchronously communicating control signals among the plurality of repeater means using a variable time multiplex system having a frame time period which is based on a number of repeater means at the repeater site; and
switch means for selectively interconnecting two or more repeater means at two or more repeater sites in response to a control signal from a transceiver means, the switch means operably connected to each of the repeater means by a network bus means separate from the high speed bus means, for synchronously communicating control and information signals between the repeater means and the switch means.
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Accused Products
Abstract
A land mobile transmission trunked communication system is provided with a unique switching protocol arrangement among repeaters that are networked to one or more external communication networks. The land mobile transmission trunked communication system includes a plurality of transceivers for transmitting and receiving transmission trunked radio communications over one or more radio channels. The transceivers communicate with a selected one of a plurality of repeaters to establish transmission trunked radio communications on a preassigned radio channel. The unique switching protocol arangement includes a switch that is operably connected to each repeater and selectively communicates information signals between a repeater and an external communication network. A bus system is operably connected to each repeater and to the switch for communicating control signals among all of the repeaters and the switch. The control signals include an indication for each repeater which is controlled by that repeater and by the switch as to free channel availability. Because the mechanism for controlling indications of free channel availability is operationally separate from the switch, the repeaters continue to provide transmission trunked communications to the transceivers in the event of a failure of the switch.
118 Citations
9 Claims
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1. A remote network switch for a land mobile transmission trunked communication system, the land mobile transmission trunked communication system having a plurality of transceiver means for transmitting and receiving radio communications over one or more radio channels, the remote network switch comprising:
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a plurality of repeater sites, each repeater site comprising a plurality of repeater means, each repeater means for establishing transmission trunked radio communications on a preassigned one of the radio channels between the repeater means and one or more transceiver means, the transmission trunked communications having either voice information, data information, or both, and a control signal, and the plurality of repeater means at a repeater site operably connected together by a high speed bus means for synchronously communicating control signals among the plurality of repeater means using a variable time multiplex system having a frame time period which is based on a number of repeater means at the repeater site; and switch means for selectively interconnecting two or more repeater means at two or more repeater sites in response to a control signal from a transceiver means, the switch means operably connected to each of the repeater means by a network bus means separate from the high speed bus means, for synchronously communicating control and information signals between the repeater means and the switch means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification