Data and control multiplexing for uplink MIMO with carrier aggregation and clustered-DFT
A method and apparatus for signal processing in a wireless transmit receive unit (WTRU), including generating a plurality of data bits and a plurality of control bits, mapping the data bits and control bits to one or more codewords, multiplexing the data bits and control bits, dividing the bits into layers, allocating control bits to each layer based on a channel quality of each codeword and a channel quality of each layer, and channel interleaving each layer for output to one or more antennas.
1. A method of operation of an evolved Node B (eNB), the method comprising:
transmitting information to a wireless transmit receive unit (WTRU); and
receiving, from the WTRU, at least a first layer of a plurality of layers, wherein the at least first layer includes at least channel quality indicator (CQI) bits multiplexed with data bits of a first transport block, wherein the first transport block has a first modulation and coding scheme (MCS), and further wherein the CQI bits are received via the first layer based on the first MCS of the first transport block; and
receiving, from the WTRU, at least a second layer of the plurality of layers, wherein the at least second layer includes at least rank indicator (RI) bits, hybrid automatic repeat request (HARQ) acknowledge/non-acknowledge (ACK/NACK) bits, and a second transport block, wherein the CQI bits are not received via the second layer.
2. The method of claim 1 , wherein the RI bits and the HARQ ACK/NACK bits are received via all layers of the plurality of layers.
3. The method of claim 1 , wherein the first transport block has a highest MCS of at least the first transport block and the second transport block.
4. The method of claim 1 , wherein uplink control information (UCI) includes the CQI bits, the RI bits, and the HARQ ACK/NACK bits, and of the UCI, only the CQI bits are multiplexed with the data bits of the first transport block.
5. The method of claim 4 , wherein the UCI is received via an uplink transmission using transmit diversity.
6. The method of claim 5 , wherein at least the data bits of the first transport block are received via an uplink transmission using spatial multiplexing.
7. The method of claim 4 , wherein the UCI includes coded UCI bits.
8. The method of claim 1 , wherein the data bits of the first transport block are coded data bits.
9. The method of claim 1 , wherein the first transport block and the second transport block are received via an uplink shared channel.
10. The method of claim 1 , wherein the first transport block is received via two layers.
11. An evolved Node B (eNB) comprising:
a transmitter configured to transmit information to a wireless transmit receive unit (WTRU); and
a receiver configured to:
receive, from the WTRU, at least a first layer of a plurality of layers, wherein the at least first layer includes at least channel quality indicator (CQI) bits multiplexed with data bits of a first transport block, wherein the first transport block has a first modulation and coding scheme (MCS), and further wherein the CQI bits are received via the first layer based on the first MCS of the first transport block; and
receive, from the WTRU, at least a second layer of the plurality of layers, wherein the at least second layer includes at least rank indicator (RI) bits, hybrid automatic repeat request (HARQ) acknowledge/non-acknowledge (ACK/NACK) bits, and a second transport block, wherein the CQI bits are not received via the second layer.
12. The eNB of claim 11 , wherein the receiver is further configured to receive the RI bits and the HARQ ACK/NACK bits via all layers of the plurality of layers.
13. The eNB of claim 11 , wherein the first transport block has a highest MCS of at least the first transport block and the second transport block.
14. The eNB of claim 11 , wherein uplink control information (UCI) includes the CQI bits, the RI bits, and the HARQ ACK/NACK bits, and of the UCI, only the CQI bits are multiplexed with the data bits of the first transport block.
15. The eNB of claim 14 , wherein the receiver is further configured to receive the UCI via an uplink transmission that uses transmit diversity.
16. The eNB of claim 15 , wherein the receiver is further configured to receive at least the data bits of the first transport block via an uplink transmission that uses spatial multiplexing.
17. The eNB of claim 14 , wherein the UCI includes coded UCI bits.
18. The eNB of claim 11 , wherein the data bits of the first transport block are coded data bits.
19. The eNB of claim 11 , wherein the receiver is further configured to receive the first transport block and the second transport block via an uplink shared channel.
20. The eNB of claim 11 , wherein the receiver is further configured to receive the first transport block via two layers.