Transmission of acknowledgement signals
Methods are described for a Node B to transmit and for a User Equipment (UE) to receive ACKnowledgement (ACK) information associated with the use of Hybrid Automatic Repeat reQuest (HARM), also known as HARQ-ACK signaling, in a communication system that includes multiple downlink component carriers or multiple uplink component carriers. An HARQ-ACK signal to a UE is in response to a data packet transmission from the UE and may consist of 2 information bits when the UE has 2 or more transmitter antennas. The HARQ-ACK signal is always located in the same downlink component carrier as the scheduling assignment resulting to the data packet transmission from the UE.
1. A method for wireless communication, the method comprising:
receiving two transport blocks from a user equipment (UE);
determining two resources identified by a group index and a sequence index based on an index I PRB — RA lowest — index and a value I PRB — RA lowest — index +1, the index I PRB — RA lowest — index being an index of a resource for transmission of an uplink data packet; and
transmitting two acknowledgement bits associated with the received two transport blocks using the determined two resources.
2. The method of claim 1 , wherein a resource for a first transport block of the two transport blocks is determined based on the index I PRB — RA lowest — index , and a resource for a second transport block of the two transport blocks is determined based on the value I PRB — RA lowest — index +1.
3. The method of claim 1 , wherein a first acknowledgement bit of the two acknowledgement bits corresponds to a first transport block of the two transport blocks, and a second acknowledgement bit of the two acknowledgement bits corresponds to a second transport block of the two transport blocks.
4. The method of claim 1 , wherein the index I PRB — RA lowest — index denotes a lowest physical resource block (PRB) index for transmission of the uplink data packet.
5. An apparatus for wireless communication, the apparatus comprising:
a receiver configured to receive a signal;
a transmitter configured to transmit a signal; and
a controller configured to control operations of receiving two transport blocks from a user equipment (UE), determining two resources identified by a group index and a sequence index based on an index I PRB — RA lowest — index and a value I PRB — RA lowest — index +1, the index I PRB — RA lowest — index being an index of a resource for transmission of an uplink data packet, and transmitting two acknowledgement bits associated with the received two transport blocks using the determined two resources.
6. The apparatus of claim 5 , wherein a resource for a first transport block of the two transport blocks is determined based on the index I PRB — RA lowest — index , and a resource for a second transport block of the two transport blocks is determined based on the value I PRB — RA lowest — index +1.
7. The apparatus of claim 5 , wherein a first acknowledgement bit of the two acknowledgement bits corresponds to a first transport block of the two transport blocks, and a second acknowledgement bit of the two acknowledgement bits corresponds to a second transport block of the two transport blocks.
8. The apparatus of claim 5 , wherein the index I PRB — RA lowest — index denotes a lowest physical resource block (PRB) index for transmission of the uplink data packet.
9. A method for wireless communication, the method comprising:
transmitting two transport blocks to a Node B;
determining two resources identified by a group index and a sequence index based on an index I PRB — RA lowest — index and a value I PRB — RA lowest — index +1, the index I PRB — RA lowest — index being an index of a resource for transmission of an uplink data packet; and
receiving two acknowledgement bits associated with the transmitted two transport blocks using the determined two resources.
10. The method of claim 9 , wherein a resource for a first transport block of the two transport blocks is determined based on the index I PRB — RA lowest — index , and a resource for a second transport block of the two transport blocks is determined based on the value I PRB — RA lowest — index +1.
11. The method of claim 9 , wherein a first acknowledgement bit of the two acknowledgement bits corresponds to a first transport block of the two transport blocks, and a second acknowledgement bit of the two acknowledgement bits corresponds to a second transport block of the two transport blocks.
12. The method of claim 9 , wherein the index I PRB — RA lowest — index denotes a lowest physical resource block (PRB) index for transmission of the uplink data packet.
13. An apparatus for wireless communication, the apparatus comprising:
a transmitter configured to transmit a signal;
a receiver configured to receive a signal; and
a controller configured to control operations of transmitting two transport blocks to a Node B, determining two resources identified by a group index and a sequence index based on an index I PRB — RA lowest — index and a value I PRB — RA lowest — index +1, the index I PRB — RA lowest — index being an index of a resource for transmission of an uplink data packet, and receiving two acknowledgement bits associated with the transmitted two transport blocks using the determined two resources.
14. The apparatus of claim 13 , wherein a resource for a first transport block of the two transport blocks is determined based on the index I PRB — RA lowest — index , and a resource for a second transport block of the two transport blocks is determined based on the value I PRB — RA lowest — index +1.
15. The apparatus of claim 13 , wherein a first acknowledgement bit of the two acknowledgement corresponds to a first transport block of the two transport blocks, and a second acknowledgement bit of the two acknowledgement bits corresponds to a second transport block of the two transport blocks. lowest in
16. The apparatus of claim 13 , wherein the index I PRB — RA lowest — index denotes a lowest physical resource block (PRB) index for transmission of the uplink data packet.