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US 11,687,401 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), the method comprising:
- the WTRU generating first feedback bits;
- the WTRU applying a first channel coding scheme to the first feedback bits, the first channel coding scheme being selected based on the number of first feedback bits;
- the WTRU transmitting the channel-coded first feedback bits;
- the WTRU generating second feedback bits;
- the WTRU attaching first cyclic redundancy check (CRC) bits to the second feedback bits, the first CRC bits being attached based on the number of second feedback bits;
- the WTRU applying a second channel coding scheme to the second feedback bits and to the first CRC bits, the second channel coding scheme being selected based on the number of second feedback bits;
- and
- the WTRU transmitting the channel-coded second feedback bits and first CRC bits.
5 more elements
A wireless transmit receive unit (WTRU) comprising a processor and memory, the processor and memory configured to:
- generate first feedback bits;
- apply a first channel coding scheme to the first feedback bits, the first channel coding scheme being selected based on the number of first feedback bits;
- transmit the channel-coded first feedback bits;
- generate second feedback bits;
- attach first cyclic redundancy check (CRC) bits to the second feedback bits, the first CRC bits being attached based on the number of second feedback bits;
- apply a second channel coding scheme to the second feedback bits and to the first CRC bits, the second channel coding scheme being selected based on the number of second feedback bits;
- and
- transmit the channel-coded second feedback bits and first CRC bits.
5 more elements
A base station comprising a processor and memory, the processor and memory configured to:
- receive channel-coded first feedback bits from a wireless transmit/receive unit (WTRU), wherein the channel-code first feedback bits correspond to first feedback bits coded in accordance with a first channel coding scheme, the first channel coding scheme being used based on the number of first feedback bits;
- and
- receive channel-coded second feedback bits and first cyclic redundancy check (CRC) bits from the WTRU, wherein the channel-code second feedback bits correspond to second feedback bits and first CRC bits that are coded together in accordance with a second channel coding scheme, the first CRC bits being attached to the second feedback bits based on the number of second feedback bits, the second channel coding scheme being used based on the number of second feedback bits.
Dependencies are inferred from the claim text.