Transmissionof HARQ control information from a user equipment for downlink carrier aggregation
Methods and apparatus are described for a User Equipment (UE) to transmit acknowledgement information together with data information in a Physical Uplink Shared CHannel (PUSCH) or separate from data information in a Physical Uplink Control CHannel (PUCCH). The HARQ-ACK payload for transmission in a PUSCH and the HARQ-ACK signal transmission power for transmission in a PUCCH are derived based on the existence and design of a Downlink Assignment Index (DAI) Information Element (IE) in the Downlink Control Information (DCI) formats scheduling receptions of data Transport Blocks (TBs) by the UE.
1. A method for a User Equipment (UE) to transmit at least one Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) bit, the method comprising the steps of:
receiving at least one transport block on at least one configured cell;
generating the at least one HARQ-ACK bit based on a number of the at least one configured cell and transmission modes for each of the at least one configured cell;
adjusting transmission power for the at least one HARQ-ACK bit based on a number of the received at least one transport block; and
transmitting the at least one HARQ-ACK bit,
wherein a transmission mode supports one transport block or up to two transport blocks.
2. The method of claim 1 , wherein the transmission power for the at least one HARQ-ACK bit increases based on the number of the received at least one transport block.
3. The method of claim 1 , wherein the at least one HARQ-ACK bit includes one bit corresponding to one transport block which is not received for one configured cell having a transmission mode that supports up to two transport blocks.
4. The method of claim 1 , wherein the UE encodes the at least one HARQ-ACK bit using a linear block code and modulates the encoded at least one HARQ-ACK bit using Quadrature Phase Shift Keying modulation.
5. The method of claim 1 , wherein the at least one HARQ-ACK bit is transmitted on an uplink control channel.
6. A User Equipment (UE) apparatus for transmitting at least one Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) bit, the apparatus comprising:
a receiver for receiving at least one transport block on at least one configured cell;
a generator for generating the at least one HARQ-ACK bit based on a number of the at least one configured cell and transmission modes for each of the at least one configured cell;
a transmitter for adjusting transmission power for the at least one HARQ-ACK bit based on a number of the received at least one transport block, and transmitting the at least one HARQ-ACK bit,
wherein a transmission mode supports one transport block or up to two transport blocks.
7. The apparatus of claim 6 , wherein the transmission power for the at least one HARQ-ACK bit increases based on the number of the received at least one transport block.
8. The apparatus of claim 6 , wherein the at least one HARQ-ACK bit includes one bit corresponding to one transport block which is not received for one configured cell having a transmission mode that supports up to two transport blocks.
9. The apparatus of claim 6 , further comprising:
an encoder that encodes the at least one HARQ-ACK bit using a linear block code; and
a modulator that modulates the encoded at least one HARQ-ACK bit using Quadrature Phase Shift Keying.
10. The apparatus of claim 6 , wherein the at least one HARQ-ACK bit is transmitted on an uplink control channel.
11. A method for a Node B to receive at least one Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) bit, the method comprising the steps of:
transmitting at least one transport block on at least one configured cell; and
receiving the at least one HARQ-ACK bit based on a number of the at least one configured cell and transmission modes for each of the at least one configured cell,
wherein the at least one HARQ-ACK bit is received based on a transmission power adjusted by a number of the transmitted at least one transport block, and
wherein a transmission mode supports one transport block or up to two transport blocks.
12. The method of claim 11 , wherein the transmission power for the at least one HARQ-ACK bit increases based on a number of the transmitted at least one transport block.
13. The method of claim 11 , wherein the at least one HARQ-ACK bit includes one bit corresponding to one transport block which is not received for one configured cell having a transmission mode that supports up to two transport blocks.
14. The method of claim 11 , wherein the UE encodes the at least one HARQ-ACK bit using a linear block code and modulates the encoded at least one HARQ-ACK bit using Quadrature Phase Shift Keying modulation.
15. The method of claim 11 , wherein the at least one HARQ-ACK bit is transmitted on an uplink control channel.
16. A Node B apparatus for receiving at least one Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) bit, the apparatus comprising:
a transmitter for transmitting at least one transport block on at least one configured cell; and
a receiver for receiving the at least one HARQ-ACK bit based on a number of the at least one configured cell and transmission modes for each of the at least one configured cell;
wherein the at least one HARQ-ACK bit is received based on a transmission power adjusted by a number of the transmitted at least one transport block, and
wherein a transmission mode supports one transport block or up to two transport blocks.
17. The apparatus of claim 16 , wherein the transmission power for the at least one HARQ-ACK bit increases based on the number of the transmitted at least one transport block.
18. The apparatus of claim 16 , wherein the at least one HARQ-ACK bit includes one bit corresponding to one transport block which is not received for one configured cell having a transmission mode that supports up to two transport blocks.
19. The apparatus of claim 16 , wherein the UE encodes the at least one HARQ-ACK bit using a linear block code and modulates the encoded at least one HARQ-ACK bit using Quadrature Phase Shift Keying modulation.
20. The apparatus of claim 16 , wherein the at least one HARQ-ACK bit is transmitted on an uplink control channel.