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US 7,733,988 B2Granted
Multiframe control channel detection for enhanced dedicated channel
AssigneeAlcatel-Lucent USA Inc.
InventorsRainer Bachl, Francis Dominique, Hongwei Kong, Walid E. Nabhane
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Abstract
A plurality of decoding metrics for a current frame may be generated based on a correlation set for a current frame and a correlation set for at least one previous frame. Whether a signal is present on a control channel may then be determined based on the generated decoding metrics.
Claims23
A method of detecting a signal, comprising:
- generating at least one multi-frame correlation set based on a correlation set for at least one previous frame and a correlation set for the current frame such that based on at least a portion of control data transmitted in the current frame and at least a portion of control data transmitted in the at least one previous frame being the same, the correlation set for the current frame and the correlation set for the at least one previous frame being determined at least partially based on the portion of the control data that is the same between the current control frame and the at least one previous control frame, wherein each correlation set includes a plurality of correlation values, and each correlation value indicates a likelihood that a codeword is present in a signal;
- generating decoding metrics for a current frame of a control channel based on the at least one multi-frame correlation set;
- and
- detecting whether a signal is present on the control channel based on the generated decoding metrics;
- wherein in the generating at least one multi-frame correlation, a threshold value of retransmissions is used to determine a number of the at least one previous frame included in generating the at least one multi-frame correlation set.
2 more elements
A method of detecting a signal, comprising:
- generating at least one multiframe correlation set based on a correlation set for a current frame of a control channel and a correlation set for at least one previous frame of the control channel, the current frame being a retransmission of the control data in the at least one previous frame, and the correlation set for the current frame and the correlation set for the at least one previous frame are determined at least partially based on the re-transmitted control data, wherein each correlation set includes a plurality of correlation values, and each correlation value indicates a likelihood that a codeword is present in the signal;
- and
- detecting whether the signal is present on the control channel based on the at least one multiframe correlation set;
- wherein in generating the at least one multi-frame correlation, a threshold value of retransmissions is used to determine a number of the at least one previous frames on which the at least one multi-frame correlation set is based.
1 more element
Dependencies are inferred from the claim text.