Robust radio resource control signaling for HSDPA
First Claim
1. A signaling method implemented by a radio network controller for executing a hard handover of a mobile station receiving packet data on a shared downlink traffic channel, said method comprising:
- initiating a hard handover of said mobile station from a current serving cell to a target cell responsive to a signaling message from said mobile station;
bi-casting radio resource control messages through both said current serving cell and said target cell during said handover; and
uni-casting user data through the current serving cell during said handover.
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Accused Products
Abstract
A radio network controller is operable in both a unicast signaling mode and a bi-cast signaling mode. In unicast signaling mode, the radio network controller is operable to send radio resource control signals to a mobile station through a serving cell. The radio network controller is operable to go into bi-cast signaling mode during a hard handover. In the bi-cast signaling mode, the radio network controller is operable to send radio resource control messages to the mobile station through both the current serving cell and a target cell. The mobile station is configured to listen to both the current serving cell and the target cell for radio resource control messages. User data, however, is transmitted only from the current serving cell to the mobile station.
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Citations
32 Claims
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1. A signaling method implemented by a radio network controller for executing a hard handover of a mobile station receiving packet data on a shared downlink traffic channel, said method comprising:
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initiating a hard handover of said mobile station from a current serving cell to a target cell responsive to a signaling message from said mobile station;
bi-casting radio resource control messages through both said current serving cell and said target cell during said handover; and
uni-casting user data through the current serving cell during said handover. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A radio network controller for a radio access network, said radio network controller comprising a radio resource controller operative to:
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initiate a hard handover from a current serving cell to a target cell responsive to a signaling message from said mobile station;
bi-cast radio resource control messages to said mobile station through both said current serving cell and said target cell during said handover; and
uni-cast user data through the current serving cell during said handover. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A signaling method implemented by a mobile station for executing a handover in a mobile communication network, said method comprising:
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sending a signaling message to a radio resource controller to initiate a hard handover from a current serving cell to a target cell; and
listening on a downlink channel in both said current serving cell and said target cell for a response message to said signaling message. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A mobile station capable of receiving data on a shared downlink traffic channel, said mobile station comprising:
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a transceiver to transmit and receive data, including radio resource control messages; and
a control unit to control said transceiver, said transceiver configured to;
send a signaling message to a radio network controller to initiate a hard handover form a current serving cell to a target cell; and
listen for a response message to said signaling message from said radio network controller on a downlink channel in both said current serving cell and said target cell. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A computer readable medium storing code for controlling a mobile station, said code including:
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code for causing the mobile station to send a signaling message to a radio resource controller to request a hard handover from a current serving cell to a target cell;
code for causing the mobile station to listen in both said current serving cell and said target sell for a response to said signaling message. - View Dependent Claims (29, 30)
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31. A computer readable medium storing code for controlling a radio network controller, said code including:
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code for causing the radio network controller to initiate a hard handover of said mobile station from a current serving cell to a target cell responsive to a signaling message from said mobile station;
code for causing the radio network controller to bi-cast a radio resource control messages through both said current serving cell and said target cell during said handover;
code for causing the radio network controller to uni-cast user data through the current serving cell during said handover. - View Dependent Claims (32)
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Specification