Transmission trunked radio system with voice buffering and off-line dialing
First Claim
1. A method of communicating on a trunked radio system comprising the steps of:
- requesting an assignment to an information channel on which to transmit and waiting to receive the assignment;
while waiting, recording a representation of information to be transmitted; and
receiving the assignment and, upon receiving the assignment, reproducing and transmitting on the information channel at least a part of the delayed version of the representation of the information.
1 Assignment
0 Petitions
Accused Products
Abstract
A trunked radio subscriber requesting dispatch service transmits a request for a channel and immediately begins to speak without waiting to receive permission to access the channel. The subscriber radio locally records the information to be transmitted and, upon being assigned a channel, begins to reproduce and transmit the information. Recording and reproduction provides delay to span the time between request for and assignment to a channel and eliminates the need for the subscriber to wait to transmit or to quickly seize a channel assigned after an initial refusal. This enhances overall response time and increases time available for transmitting information signals. During interconnect calling, a trunked system alternately assigns inbound and outbound frequencies only as required for back-and-forth communication between simplex radio and duplex wireline subscribers. Voice buffering allows the parties to begin talking during the delay between request for and assignment of frequencies. The invention further provides for call origination by either radio or wireline subscribers without use of information channels. These procedures release resources and make them available to other callers.
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Citations
10 Claims
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1. A method of communicating on a trunked radio system comprising the steps of:
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requesting an assignment to an information channel on which to transmit and waiting to receive the assignment; while waiting, recording a representation of information to be transmitted; and receiving the assignment and, upon receiving the assignment, reproducing and transmitting on the information channel at least a part of the delayed version of the representation of the information. - View Dependent Claims (2)
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3. In a trunked radio system that can carry dispatch traffic and wireline interconnect traffic, in which dispatch traffic uses information channels comprising paired inbound and outbound channels that convey transmissions from requesting subscribers to receiving subscribers, and in which interconnect traffic uses information channels comprising inbound channels that convey information from radio subscribers to wireline subscribers and outbound channels that convey information from wireline subscribers to radio subscribers, a method of assigning information channels to an interconnect call comprising the steps of:
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upon a request by a radio subscriber for assignment to an information channel, assigning only an inbound channel to the radio subscriber and making available for other interconnect calls the outbound channel that would be paired with the inbound channel for dispatch traffic; after a transmission by the radio subscriber, assigning only an outbound channel to the wireline subscriber and making available for other interconnect calls the inbound channel that would be paired with the outbound channel for dispatch traffic; and continuing to assign inbound and outbound channels in like manner until a completion of the interconnect call. - View Dependent Claims (4)
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5. In a trunked radio system having information and control channel resources, a method of originating an interconnect call from a radio subscriber to a wireline subscriber without using information channel resources comprising the steps of:
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at the radio subscriber, locally encoding a telephone number of the wireline subscriber and, using control channel resources, requesting interconnect service and transmitting a representation of the telephone number; at a central controller of the trunked radio system, placing a call to the wireline subscriber; responding to progress information about the call, and, using control channel resources, notifying the radio subscriber of the progress information; and initiating an assignment of an outbound channel to the wireline subscriber, if the wireline subscriber answers the call. - View Dependent Claims (6)
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7. A radio subscriber unit, for use in a trunked radio communication system, comprising:
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means for requesting an assignment to an information channel on which to transmit; means for recording a representation of information to be transmitted, while waiting to receive the assignment; means for reproducing, upon receiving the assignment, at least a part of a delayed version of the representation of the information; and means for transmitting the part of the delayed version on the information channel. - View Dependent Claims (8)
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9. In a trunked radio system having information channel resources and control channel resources, means for originating an interconnect call from a radio subscriber to a wireline subscriber without using information channel resources comprising:
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at the radio subscriber unit, means for locally encoding a telephone number of the wireline subscriber and means for requesting interconnect service and transmitting a representation of the telephone number using control channel resources; at a central controller of the trunked radio system, means for placing a call to the wireline subscriber, means for responding to progress information about the call, and means for notifying the radio subscriber of the progress information using control channel resources; and means for initiating an assignment of an outbound channel to the wireline subscriber if the wireline subscriber answers the call. - View Dependent Claims (10)
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Specification