Uplink transmissions in wireless communications
Methods and devices for offloading and/or aggregation of resources to coordinate uplink transmissions when interacting with different schedulers are disclosed herein. A method in a WTRU incudes functionality for coordinating with a different scheduler for each eNB associated with the WTRU's configuration. Disclosed methods include autonomous WTRU grand selection and power scaling, and dynamic prioritization of transmission and power scaling priority.
1. A wireless transmit/receive unit (WTRU) comprising:
a transceiver; and
a processor;
the processor and the transceiver configured to receive a downlink control information (DCI) which includes a grant for an uplink transmission, the DCI including a priority value associated with the grant;
the processor configured to determine whether a priority associated with a logical channel is equal to a priority associated with the grant based on at least the priority value; and
the processor and the transceiver configured to include data of the logical channel in the uplink transmission on a condition that the priority associated with the grant is determined to be equal to the priority associated with the logical channel.
2. The WTRU of claim 1 , wherein the priority value is indicated by one bit.
3. The WTRU of claim 1 , wherein the DCI includes the priority value in an overloaded field.
4. The WTRU of claim 1 , wherein the WTRU is configured to receive a configuration that includes a priority value for the logical channel.
5. The WTRU of claim 1 , wherein the WTRU is configured to maintain a variable indicating a priority of the logical channel.
6. The WTRU of claim 1 , wherein the WTRU is configured to maintain a variable indicating a priority for each of a plurality of logical channels.
7. The WTRU of claim 1 , wherein the WTRU is configured to maintain a variable Bj indicating a priority for each of a plurality of logical channels j.
8. The WTRU of claim 1 , wherein the WTRU is configured to scale a transmission power of the uplink transmission based on the priority value.
9. A method implemented in a wireless transmit/receive unit (WTRU), the method comprising:
receiving a downlink control information (DCI) which includes a grant for an uplink transmission, the DCI including a priority value associated with the grant;
determining whether a priority associated with a logical channel is equal to a priority associated with the grant based on at least the priority value; and
including data of the logical channel in the uplink transmission on a condition that the priority associated with the grant is determined to be equal to the priority associated with the logical channel.
10. The method of claim 9 , wherein the priority value is indicated by one bit.
11. The method of claim 9 , wherein the DCI includes the priority value in an overloaded field.
12. The method of claim 9 , further comprising receiving a configuration that includes a priority value for the logical channel.
13. The method of claim 9 , further comprising maintaining a variable indicating a priority of the logical channel.
14. The method of claim 9 , further comprising maintaining a variable indicating a priority for each of a plurality of logical channels.
15. The method of claim 9 , further comprising maintaining a variable Bj indicating a priority for each of a plurality of logical channels j.
16. The method of claim 9 , further comprising scaling a transmission power of the uplink transmission based on the priority value.
17. A wireless transmit/receive unit (WTRU) comprising a processor and memory, the processor and memory configured to:
receive a downlink control information (DCI) which includes an assignment for a downlink transmission, the DCI including a priority value associated with the assignment, wherein the priority value is indicated using a single bit in the DCI;
determine that a priority associated with a physical uplink control channel transmission comprising hybrid automatic repeat request (HARQ) feedback associated with the downlink transmission has a high priority based on at least the priority value; and
transmit the physical uplink control channel transmission and drop a physical uplink shared channel transmission based on determining that the physical uplink control transmission has the high priority indicated using the single bit in the DCI.
18. The WTRU of claim 17 , wherein the DCI includes the priority value in an overloaded field.
19. The WTRU of claim 17 , wherein the processor and memory are configured to receive a second DCI which includes a grant for the physical uplink shared channel transmission, the second DCI including a second priority value associated with the grant, wherein the second priority value is indicated using a single bit in the second DCI, the second priority value indicating that the physical uplink control channel transmission has a low priority.
20. A method implemented in a wireless transmit/receive unit (WTRU), the method comprising:
receiving a downlink control information (DCI) which includes an assignment for a downlink transmission, the DCI including a priority value associated with the assignment, wherein the priority value is indicated using a single bit in the DCI;
determining that a priority associated with a physical uplink control channel transmission comprising hybrid automatic repeat request (HARD) feedback associated with the downlink transmission has a high priority based on at least the priority value; and
transmitting the physical uplink control channel transmission and dropping a physical uplink shared channel transmission based on determining that the physical uplink control transmission has the high priority indicated using the single bit in the DCI.