Supporting uplink transmissions
Apparatuses and methods supporting uplink transmissions are disclosed. A method includes receiving signaling including information indicating a primary cell and at least one non-primary cell, receiving a message with scheduling information indicating an allocation of uplink resources and a HARQ process ID, and transmitting to at least the one non-primary cell an uplink transmission using a HARQ process indicated by the HARQ process ID and the allocation of uplink resources. Another method includes transmitting signaling including information indicating a primary cell and at least one non-primary cell, transmitting a message with scheduling information indicating an allocation of uplink resources and a HARQ process ID to a wireless transmit/receive unit (WTRU), and receiving an uplink transmission using a HARQ process indicated by the HARQ process ID and the allocation of uplink resources on at least the one non-primary cell.
1. A method performed by a wireless transmit receive unit (WTRU), the method comprising:
receiving signaling including information indicating a primary cell and at least one non-primary cell;
receiving a message with scheduling information indicating an allocation of uplink resources and a hybrid automatic repeat request (HARQ) process ID, wherein the WTRU has one or more HARQ processes; and
transmitting to at least the one non-primary cell an uplink transmission using a HARQ process indicated by the HARQ process ID and the allocation of uplink resources.
2. The method of claim 1 , wherein a negative acknowledgement is determined based on the received HARQ process ID.
3. The method of claim 1 , wherein the primary cell schedules uplink transmissions that are transmitted by the WTRU to the at least one non-primary cell.
4. The method of claim 1 further comprising communicating HARQ feedback using a control channel only of the primary cell.
5. The method of claim 1 , wherein the WTRU has a maximum transmission level for all cell transmissions.
6. A wireless transmit receive unit (WTRU) comprising:
a receiver; and
a transmitter,
wherein the receiver and the transmitter are configured to cause the WTRU to:
receive signaling including information indicating a primary cell and at least one non-primary cell;
receive a message with scheduling information indicating an allocation of uplink resources and a hybrid automatic repeat request (HARQ) process ID, wherein the WTRU has one or more HARQ processes; and
transmit to at least the one non-primary cell an uplink transmission using a HARQ process indicated by the HARQ process ID and the allocation of uplink resources.
7. The WTRU of claim 6 , wherein a negative acknowledgement is determined based on the received HARQ process ID.
8. The WTRU of claim 6 , wherein the primary cell schedules uplink transmissions that are transmitted by the WTRU to the at least one non-primary cell.
9. The WTRU of claim 6 , wherein the receiver and the transmitter are further configured to communicate HARQ feedback using a control channel only of the primary cell.
10. The WTRU of claim 6 , wherein the WTRU has a maximum transmission level for all cell transmissions.
11. A base station comprising:
a receiver; and
a transmitter,
wherein the receiver and the transmitter are configured to cause the base station to:
transmit signaling including information indicating a primary cell and at least one non-primary cell;
transmit a message with scheduling information indicating an allocation of uplink resources and a hybrid automatic repeat request (HARQ) process ID to a wireless transmit/receive unit (WTRU), wherein the WTRU has one or more HARQ processes; and
receive an uplink transmission using a HARQ process indicated by the HARQ process ID and the allocation of uplink resources on at least the one non-primary cell.
12. The base station of claim 11 , wherein a negative acknowledgement is communicated based on the received HARQ process ID.
13. The base station of claim 11 , wherein the primary cell schedules uplink transmissions that are received by the base station on the at least one non-primary cell.
14. The base station of claim 11 , wherein the receiver and the transmitter are further configured to communicate HARQ feedback using a control channel only of the primary cell.
15. A method performed by a base station, the method comprising:
transmitting signaling including information indicating a primary cell and at least one non-primary cell;
transmitting a message with scheduling information indicating an allocation of uplink resources and a hybrid automatic repeat request (HARQ) process ID to a wireless transmit/receive unit (WTRU), wherein the WTRU has one or more HARQ processes; and
receiving an uplink transmission using a HARQ process indicated by the HARQ process ID and the allocation of uplink resources on at least the one non-primary cell.
16. The method of claim 15 , wherein a negative acknowledgement is communicated based on the received HARQ process ID.
17. The method of claim 15 , wherein the primary cell schedules uplink transmissions that are received by the base station on the at least one non-primary cell.
18. The method of claim 15 , further comprising communicating HARQ feedback using a control channel only of the primary cell.