Method and apparatus for providing fast detection of a high speed shared control channel
AssigneeInterDigital Technology Corporation
InventorsGregory S. Sternberg, Yingming Tsai, Philip J. Pietraski
Life of this patent
Estimating the term…
Abstract
A method and apparatus for providing fast detection of a high speed shared control channel (HS-SCCH). The HS-SCCH carries information necessary for receiving data via a high speed downlink shared channel (HS-DSCH). The apparatus receives messages transmitted via a plurality of HS-SCCHs. The apparatus measures a channel quality for the messages received via each HS-SCCH. The apparatus performs a threshold test by comparing the channel quality with a predetermined threshold. The apparatus then selects a HS-SCCH having the best channel quality among the HS-SCCHs.
Claims12
A method for providing fast detection of a high speed shared control channel (HS-SCCH), the method comprising:
- (a) receiving messages transmitted via a plurality of HS-SCCHs;
- (b) decoding the messages;
- (c) generating an accumulated soft metric for each of the HS-SCCHs;
- (d) comparing each of the accumulated soft metrics with a soft metric threshold;
- and
- (e) selecting an HS-SCCH having the lowest accumulated soft metric among those HS-SCCHs having an accumulated soft metric lower than the soft metric threshold, wherein when a plurality of soft metrics exceed the soft metric threshold and are close in value, preference is given to one of the soft metrics that was previously used on the last received message.
A wireless transmit/receive unit (WTRU) for providing fast detection of a high speed shared control channel (HS-SCCH), the WTRU comprising:
- (a) means for receiving messages transmitted via a plurality of HS-SCCHs;
- (b) means for decoding the messages;
- (c) means for generating an accumulated soft metric for each of the HS-SCCHs;
- (d) means for comparing each of the accumulated soft metrics with a soft metric threshold;
- and
- (e) means for selecting an HS-SCCH having the lowest accumulated soft metric among those HS-SCCHs having an accumulated soft metric lower than the soft metric threshold, wherein when a plurality of soft metrics exceed the soft metric threshold and are close in value, preference is given to one of the soft metrics that was previously used on the last received message.
An integrated circuit (IC) for providing fast detection of a high speed shared control channel (HS-SCCH), the IC comprising:
- (a) means for receiving messages transmitted via a plurality of HS-SCCHs;
- (b) means for decoding the messages;
- (c) means for generating an accumulated soft metric for each of the HS-SCCHs;
- (d) means for comparing each of the accumulated soft metrics with a soft metric threshold;
- and
- (e) means for selecting an HS-SCCH having the lowest accumulated soft metric among those HS-SCCHs having an accumulated soft metric lower than the soft metric threshold, wherein when a plurality of soft metrics exceed the soft metric threshold and are close in value, preference is given to one of the soft metrics that was previously used on the last received message.
Dependencies are inferred from the claim text.