Priority system for a wide area transmission trunked communication system
First Claim
1. A method for channel selection for a land mobile transmission trunked communication system having a plurality of transceivers for transmitting and receiving distributively selected transmission trunked radio communications over one or more radio channels, comprising the steps of:
- assigning a priority to each transmitter of the plurality of transceivers, including one or more highest priority transceivers and one or more lowest priority transceivers;
if only one radio channel is free, performing the steps of;
allowing access only to the one or more highest priority transceivers for a first time interval;
if the one radio channel remains free, allowing access to a next lower priority transceiver for a second time interval; and
if the one radio channel is free after the second time interval, repeating the previous step until the next lower priority transceiver is a lowest priority transceiver or until the one radio channel is no longer free; and
if no radio channel is free, allowing access only to the highest priority transceivers.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for providing priority access for users in a transmission trunked communication system, including a plurality of distributive radio network terminal (RNT) switches and a unique signaling protocol and a switching protocol especially adapted for communication of control signals in the subaudio band for interconnecting the trunked transmission communications systems into a wide area network that provides an expanded feature set of radio communications capabilities.
137 Citations
16 Claims
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1. A method for channel selection for a land mobile transmission trunked communication system having a plurality of transceivers for transmitting and receiving distributively selected transmission trunked radio communications over one or more radio channels, comprising the steps of:
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assigning a priority to each transmitter of the plurality of transceivers, including one or more highest priority transceivers and one or more lowest priority transceivers; if only one radio channel is free, performing the steps of; allowing access only to the one or more highest priority transceivers for a first time interval; if the one radio channel remains free, allowing access to a next lower priority transceiver for a second time interval; and if the one radio channel is free after the second time interval, repeating the previous step until the next lower priority transceiver is a lowest priority transceiver or until the one radio channel is no longer free; and if no radio channel is free, allowing access only to the highest priority transceivers. - View Dependent Claims (2, 3, 4)
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5. A method for channel selection for a land mobile transmission trunked communication system having a plurality of transceivers for transmitting and receiving distributively selected transmission trunked radio communications over one or more radio channels, comprising the steps of:
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assigning a priority to each transceiver of the plurality of transceivers, including one or more highest priority transceivers and one or more lowest priority transceivers; providing N radio channels reserved for highest priority transceiver access, wherein N is at least one; and if less than N+1 radio channels are free, allowing access only to the one or more highest priority transceivers. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A distributive wide area network 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 transmission trunked radio communications over one or more channels, the transmission trunked radio communications comprising an information signal and a control signal, the distributive wide area network comprising:
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a plurality of repeater means, each repeater means having prioritization means for reserving at least one channel for high priority transmissions using transmission trunked radio communications between the repeater means and one or more transceiver means, and all of the repeater means operably connected together by high speed bus means for communicating signals among the repeater means using a variable time multiplex system having a frame time period which is based on a number of repeater means; and switch means for selectively interconnecting two or more repeater means 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 two or more repeater means. - View Dependent Claims (13, 14, 15, 16)
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Specification