Method and system for controlling transmission power of a downlink signaling channel based on enhanced uplink transmission failure statistics
First Claim
1. A method for controlling transmission power of a downlink (DL) enhanced uplink (EU) signaling channel, the method comprising:
- a radio network controller (RNC) determining EU transmission failure statistics perceived on the downlink EU signaling channel; and
the RNC adjusting a transmission power offset for at least one of an acknowledge (ACK) message and a non-acknowledge (NACK) message transmitted over the DL EU signaling channel based on the EU transmission failure statistics,wherein the EU transmission failure statistics are determined by subtracting a number of EU media access control (MAC-e) failures of a wireless transmit/receive unit (WTRU) reported by the WTRU from a number of MAC-e failures of the WTRU reported by a Node-B.
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Abstract
A method and system for controlling the transmission power of at least one downlink (DL) enhanced uplink (EU) signaling channel such that enhanced dedicated channel (E-DCH) DL signaling is delivered efficiently and reliably. The system includes at least one wireless transmit/receive unit (WTRU), at least one Node-B and a radio network controller (RNC). At least one of the WTRU and the Node-B compute EU transmission failure statistics on the DL EU signaling channel and report the EU transmission failure statistics to the RNC. The RNC then adjusts a transmission power offset of the DL EU signaling channel to be used in determining transmission power level of the DL EU signaling channel at the Node-B based on the EU transmission failure statistics.
18 Citations
20 Claims
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1. A method for controlling transmission power of a downlink (DL) enhanced uplink (EU) signaling channel, the method comprising:
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a radio network controller (RNC) determining EU transmission failure statistics perceived on the downlink EU signaling channel; and the RNC adjusting a transmission power offset for at least one of an acknowledge (ACK) message and a non-acknowledge (NACK) message transmitted over the DL EU signaling channel based on the EU transmission failure statistics, wherein the EU transmission failure statistics are determined by subtracting a number of EU media access control (MAC-e) failures of a wireless transmit/receive unit (WTRU) reported by the WTRU from a number of MAC-e failures of the WTRU reported by a Node-B. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A radio network controller (RNC) for controlling transmission power of a downlink (DL) enhanced uplink (EU) signaling channel, the RNC comprising:
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a transceiver configured to transmit and receive signals to and from a Node B; and a controller configured to determine EU transmission failure statistics perceived on the downlink EU signaling channel and adjust transmission power offset for at least one of an acknowledge (ACK) message and a non-acknowledge (NACK) message transmitted over the DL EU signaling channel based on the EU transmission failure statistics wherein the controller is configured to determine the EU transmission failure statistics by subtracting a number of EU media access control (MAC-e) failures of a wireless transmit/receive unit (WTRU) reported by the WTRU from the number of MAC-e failures of the WTRU reported by a Node-B. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification