Method/apparatus for an accelerated response to resource allocation requests in a CDMA push-to-talk system using a CDMA interconnect subsystem to route calls
First Claim
1. A method of providing an accelerated response to a push-to-talk origination message in a dispatch system, said dispatch system having a plurality of remote units, a plurality of base stations, and a mobile system controller, said method comprising the steps of:
- pre-allocating a first set of equipment to support a push-to-talk connection at each of said plurality of base stations;
pre-allocating a second set of equipment to support said push-to-talk connection at said mobile system controller;
receiving at a first base station a push-to-talk origination message from a first remote unit; and
transmitting from said first base station directly in response to said push-to-talk origination message a page to said first remote unit directing said first remote unit to establish communication through said first and second sets of equipment wherein the step of pre-allocating said second set of equipment comprises the step of pre-allocating at least one mobile system controller selector to route calls between a switch and a CDMA interconnect subsystem.
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Accused Products
Abstract
In a push-to-talk dispatch system, a method and apparatus for providing an accelerated response to a push-to-talk origination message. A first base station allocates a first set of equipment to support a push-to-talk connection. A first system controller allocates a second set of equipment to support the push-to-talk connection. Upon receipt of a push-to-talk origination message from a first remote unit, the first base station transmits an immediate response to the first remote unit, instructing it to communicate through the first set of equipment and the second set of allocated equipment.
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Citations
17 Claims
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1. A method of providing an accelerated response to a push-to-talk origination message in a dispatch system, said dispatch system having a plurality of remote units, a plurality of base stations, and a mobile system controller, said method comprising the steps of:
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pre-allocating a first set of equipment to support a push-to-talk connection at each of said plurality of base stations; pre-allocating a second set of equipment to support said push-to-talk connection at said mobile system controller; receiving at a first base station a push-to-talk origination message from a first remote unit; and transmitting from said first base station directly in response to said push-to-talk origination message a page to said first remote unit directing said first remote unit to establish communication through said first and second sets of equipment wherein the step of pre-allocating said second set of equipment comprises the step of pre-allocating at least one mobile system controller selector to route calls between a switch and a CDMA interconnect subsystem. - View Dependent Claims (2, 3, 4)
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5. An apparatus for providing an accelerated response to a push-to-talk origination message in a dispatch system, said dispatch system having a plurality of remote units, a plurality of base stations, and a mobile system controller, said apparatus comprising:
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a pre-allocated first set of equipment for communicating with a first remote unit; a pre-allocated second set of equipment to support said push-to-talk connection at said mobile system controller; a first base station for receiving said push-to-talk origination message, and directly in response transmitting a page to said first remote unit indicative of said pre-allocated modulator/demodulator through which to communicate; a CDMA interconnect subsystem for routing calls between said plurality of base stations and said mobile system controller; a central call processor, located at said mobile system controller, for pre-allocating said modulator/demodulator located at each of said plurality of base stations. - View Dependent Claims (6, 7, 8)
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9. A method of providing an accelerated response to a push-to-talk origination message in a dispatch system, said dispatch system having a plurality of remote units, a plurality of base stations, and a mobile system controller, said method comprising the steps of:
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pre-allocating a first modulator/demodulator at each of said plurality of base stations for providing a forward broadcast link to said plurality of remote units and for providing a reverse traffic link to a first remote unit; pre-allocating a first set of equipment to support said accelerated response at said mobile system controller; receiving at a first base station said push-to-talk origination message from said a first remote unit; transmitting from said first base station directly in response to said push-to-talk origination message a page to said first remote unit directing said first remote unit to establish a communication link through said pre-allocated first modulator/demodulator and said first set of equipment; allocating a second modulator/demodulator at said first base station and a second set of equipment at said mobile system controller; and transferring said communication link to said second modulator/demodulator and said second set of equipment and terminating said communication link to said pre-allocated first modulator/demodulator and said first set of equipment wherein the step of pre-allocating said set of equipment comprises the step of pre-allocating at least one mobile system controller selector to route calls between a switch and a CDMA interconnect subsystem. - View Dependent Claims (10, 11, 12, 13, 15, 16, 17)
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14. An apparatus for providing an accelerated response to a push-to-talk origination message in a dispatch system, said dispatch system having a plurality of remote units, a plurality of base stations, and a mobile system controller, said apparatus comprising:
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a pre-allocated modulator/demodulator at each of said plurality of base stations for providing a forward broadcast link to said plurality of remote units and for providing a reverse traffic link for use by a first remote unit; a pre-allocated set of equipment at said mobile system controller to support said accelerated response to said push-to-talk origination message; a second modulator/demodulator, located at each of said plurality of base stations, for accepting a communication in progress between said first remote unit and said pre-allocated modulator/demodulator; a second set of equipment at said mobile system controller for accepting said communication from said first set of equipment; a first base station in communication with said first remote unit for requesting said second modulator/demodulator and said second set of equipment upon receipt of said push-to-talk origination message; a central call processor for pre-allocating said pre-allocated modulator/demodulator and for allocating a second modulator/demodulator upon request from said first base station; and means for switching communications from said first modulator/demodulator and said pre-allocated set of equipment to said second modulator/demodulator and said second set of equipment wherein said pre-allocating set of equipment comprises at least one selector located at said mobile system controller for routing calls between a switch and a CDMA interconnect subsystem.
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Specification