Method and apparatus reducing PTT call setup delays
First Claim
1. A method for reducing push-to-talk (PTT) call setup delays comprising:
- detecting, by an originator unit, a user PTT request indication;
sending, by the originator unit to a base station (BS), PTT connection request information via a CDMA common control channel;
sending, by the originator unit to the BS, a channel assignment request via the CDMA common control channel; and
receiving, by the originator unit, an indication of PTT connection acceptance corresponding to the PTT connection request information.
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Accused Products
Abstract
Various embodiments are described herein to address the need for providing substantially reduced PTT call setup delays. Modifications to channel assignment request messaging (400), such as an IS-2000 Reconnect Message and an IS-2000 Origination Message, are described. In addition, the use of common control channel signaling (e.g., 201), changes to page response messaging (e.g., 301) and new uses for A9-Short Data Delivery messaging (e.g., 203 and 303) are described. Embodiments incorporating some or all of these protocol changes, can provide reduced end-to-end call setup time for PTT as it presently exists in IS-2000 systems.
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Citations
54 Claims
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1. A method for reducing push-to-talk (PTT) call setup delays comprising:
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detecting, by an originator unit, a user PTT request indication;
sending, by the originator unit to a base station (BS), PTT connection request information via a CDMA common control channel;
sending, by the originator unit to the BS, a channel assignment request via the CDMA common control channel; and
receiving, by the originator unit, an indication of PTT connection acceptance corresponding to the PTT connection request information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for reducing push-to-talk (PTT) call setup delays comprising:
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receiving, by a base station (BS) from a remote unit, PTT connection information via a CDMA common control channel;
sending, by the BS to a packet control function (PCF), the PTT connection information using an A9-Short Data Delivery message prior to a corresponding A9/A8 establishment with the PCF; and
assigning, by the BS to the remote unit, a traffic channel to support an active packet data session of the remote unit. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A method for reducing push-to-talk (PTT) call setup delays comprising:
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receiving, by a target unit from a base station (BS), a page message indicating a data connection is requested;
sending, by the target unit to the BS in response to the page message, PTT connection acceptance information via a CDMA common control channel;
receiving, by the target unit from the BS, channel assignment messaging after sending the PTT connection acceptance information; and
receiving, by the target unit from the BS, PTT originator information. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A mobile station (MS) comprising:
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a transceiver;
a processor, communicatively coupled to the transceiver, adapted to detect a user PTT request indication, adapted to send, to a base station (BS) via the transceiver, PTT connection request information via a CDMA common control channel, adapted to send, to the BS via the transceiver, a channel assignment request via the CDMA common control channel, and adapted to receive, from the BS via the transceiver, an indication of PTT connection acceptance corresponding to the PTT connection request information.
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53. A base station (BS) comprising:
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a transceiver;
a controller, communicatively coupled to the transceiver, adapted to receive, from a remote unit via the transceiver, PTT connection information via a CDMA common control channel, adapted to send, to a packet control function (PCF), the PTT connection information using an A9-Short Data Delivery message prior to a corresponding A9/A8 establishment with the PCF, and adapted to assign, to the remote unit, a traffic channel to support an active packet data session of the remote unit.
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54. A mobile station (MS) comprising:
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a transceiver;
a processor, communicatively coupled to the transceiver, adapted to receive, from a base station (BS) via the transceiver, a page message indicating a data connection is requested, adapted to send, to the BS via the transceiver in response to the page message, PTT connection acceptance information via a CDMA common control channel, adapted to receive, from the BS via the transceiver, channel assignment messaging after sending the PTT connection acceptance information, and adapted to receive, from the BS via the transceiver, PTT originator information.
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Specification