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US 8,572,461 B2Granted
Feedback signaling error detection and checking in MIMO wireless communication systems
AssigneeInterDigital Technology Corporation
InventorKyle Jung-Lin Pan
Life of this patent
Estimating the term…
Abstract
A method of feedback in a wireless transmit receive unit includes providing a precoding matrix index (PMI), error checking the (PMI) to produce an error check (EC) bit, coding the PMI and the EC bit and transmitting the coded PMI and EC bit.
Claims20
A method implemented in a wireless transmit receive unit (WTRU) for providing feedback with error correction, the method comprising:
- determining feedback information, wherein the feedback information comprises at least one of a channel quality index (CQI) or a precoding matrix index (PMI);
- attaching Cyclic Redundancy Check (CRC) bits to the feedback information;
- applying a turbo coding scheme to user data bits to produce turbo coded user data bits;
- applying a convolutional coding scheme to the feedback information and CRC bits to produce convolutional coded feedback information and CRC bits;
- and
- transmitting the convolutional coded feedback information and CRC bits with the turbo coded user data bits over a data type channel.
3 more elements
A wireless transmit/receive unit (WTRU) comprising:
- a processor configured to:
- determine feedback information, wherein the feedback information comprises at least one of a channel quality index (CQI) or a precoding matrix index (PMI)
- attach Cyclic Redundancy Check (CRC) bits to the feedback information,
- apply a turbo coding scheme to user data bits to produce turbo coded user data bits, and
- apply a convolutional coding scheme to the feedback information and CRC bits to produce convolutional coded feedback information and CRC bits;
- and
- a transmitter configured to transmit the convolutional coded feedback information and CRC bits with the turbo coded user data bits over a data type channel.
4 more elements
An evolved Node-B (eNB) comprising:
- a transceiver configure to receive convolutional coded feedback information and Cyclic Redundancy Check (CRC) bits with turbo coded user data bits over a data type channel;
- and
- a processor configured to:
- decode the turbo coded user data bits to produce user data bits,
- decode the convolutional coded feedback information and CRC bits to produce feedback information with attached CRC bits, and
- determine the feedback information does not include an error based on the CRC bits, wherein the feedback information comprises at least one of a precoding matrix index (PMI) or a channel quality index (CQI).
3 more elements
Dependencies are inferred from the claim text.