Encoding uplink acknowledgments to downlink transmissions
View Patent ↗A portable device, such as a mobile terminal or user equipment, for encoding uplink acknowledgments to downlink transmissions. The portable device includes a receiver configured to receive a plurality of data blocks, such that each of the data blocks include an associated cyclic redundancy check (CRC), and a processor configured to determine received status for each of the data blocks by checking the CRC of each of the data blocks. The portable device further includes a transmitter for transmitting a response sequence which indicates the received status of all of the data blocks.
1. A method for transmitting uplink acknowledgments in response to downlink transmissions, the method comprising:
receiving, in a User Equipment (UE), a plurality of data blocks from a Node B, wherein each of the data blocks include an associated cyclic redundancy check (CRC);
determining received status for each of the data blocks by checking the CRC of each of the data blocks;
generating a response sequence which indicates the received status of all of the received plurality of data blocks;
modulating the response sequence using QPSK modulation; and
transmitting, from the UE, the modulated response sequence to the Node B,
wherein the data blocks comprise a first transport block and a second transport block,
wherein the received status is either an acknowledgment (ACK) which identifies a data block which has been received without error, or a negative acknowledgment (NACK) which identifies a data block which has been received with an error.
2. The method according to claim 1 , wherein the downlink transmissions comprise multiple input multiple output (MIMO) transmissions.
3. The method according to claim 2 , further comprising:
receiving the data blocks in parallel.
4. The method according to claim 1 , wherein the downlink transmissions comprise time division duplex (TDD) transmissions.
5. The method according to claim 4 , further comprising:
sequentially receiving the data blocks.
6. The method according to claim 4 , further comprising:
receiving the data blocks in parallel.
7. A portable device for transmitting uplink acknowledgments in response to downlink transmissions, the portable device comprising:
a receiver configured to receive a plurality of data blocks from a Node B, wherein each of the data blocks include an associated cyclic redundancy check (CRC);
a processor configured to determine received status for each of the data blocks by checking the CRC of each of the data blocks, to generate a response sequence which indicates the received status of all of the received plurality of data blocks, to modulate the response sequence using QPSK modulation; and
a transmitter for transmitting the modulated response sequence to the Node B,
wherein the data blocks comprise a first transport block and a second transport block,
wherein the received status is either an acknowledgment (ACK) which identifies a data block which has been received without error, or a negative acknowledgment (NACK) which identifies a data block which has been received with an error.
8. The portable device according to claim 7 , wherein the downlink transmissions comprise multiple input multiple output (MIMO) transmissions.
9. The portable device according to claim 8 , wherein the receiver is further configured to:
receive the data blocks in parallel.
10. The portable device according to claim 7 , wherein the downlink transmissions comprise time division duplex (TDD) transmissions.
11. The portable device according to claim 10 , wherein the receiver is further configured to:
sequentially receive the data blocks.
12. The portable device according to claim 10 , wherein the receiver is further configured to:
receive the data blocks in parallel.