Method and apparatus for cancelling transmission based on overlapping transmission occasions

1. A method in a user equipment, the method comprising:

determining a first transmission occasion and a first priority of a first uplink channel;

determining a second transmission occasion and a second priority of a second uplink channel, where the first priority is higher than the second priority, and where the first transmission occasion overlaps in time with the second transmission occasion;

determining a particular symbol of the second uplink channel to cancel a transmission of the second uplink channel based on the first transmission occasion overlapping in time with the second transmission occasion; and

cancelling the transmission of the second uplink channel from the particular symbol,

wherein the method further comprises detecting a downlink control information format including scheduling information for the first uplink channel, and

wherein the particular symbol is determined at least based on timing related to detecting the downlink control information format.

2. The method according to claim 1 , wherein the first uplink channel comprises at least one of ultra-reliable low-latency communication data and ultra-reliable low-latency communication uplink control information.

3. The method according to claim 1 ,

wherein the first transmission occasion partially overlaps in time with the second transmission occasion, and

wherein the second transmission occasion starts earlier than the first transmission occasion.

4. The method according to claim 1 , wherein cancelling the transmission of the second uplink channel from the particular symbol comprises stopping the transmission of the second uplink channel from the particular symbol, wherein the particular symbol is not a beginning symbol of the second uplink channel.

5. The method according to claim 1 , wherein a start time of the particular symbol is no later than a start time of the first transmission occasion.

6. The method according to claim 1 , wherein the particular symbol is determined based on a physical uplink shared channel timing capability.

7. The method according to claim 1 , wherein the first uplink channel comprises a physical uplink control channel carrying first hybrid automatic repeat request acknowledgement information;

wherein the second uplink channel comprises a physical uplink shared channel carrying at least second hybrid automatic repeat request acknowledgement information, and

wherein the method further comprises multiplexing the second hybrid automatic repeat request acknowledgement information with the first hybrid automatic repeat request acknowledgement information in the first uplink channel.

8. The method according to claim 7 , wherein the first hybrid automatic repeat request acknowledgement information has higher priority than the second hybrid automatic repeat request acknowledgement information.

9. The method according to claim 7 , further comprising receiving an indication to multiplex the second hybrid automatic repeat request acknowledgement information with the first hybrid automatic repeat request acknowledgement information in the first uplink channel.

10. The method according to claim 7 , further comprising determining whether the user equipment is in a power-limited condition,

wherein multiplexing the second hybrid automatic repeat request acknowledgement information comprises multiplexing the second hybrid automatic repeat request acknowledgement information with the first hybrid automatic repeat request acknowledgement information in the first uplink channel in response to determining that the user equipment is not in the power-limited condition.

11. The method according to claim 1 , wherein the particular symbol is determined based on a number of symbols during a time duration between a start time of the first transmission occasion and an end time of the second transmission occasion.

12. The method according to claim 11 , wherein a time interval of the particular symbol includes a start time of the first transmission occasion if the number of symbols is less than a threshold value.

13. The method according to claim 1 , wherein the second uplink channel comprises a plurality of frequency hops, wherein each of the plurality of frequency hops comprises a set of self-decodable coded hybrid automatic repeat request acknowledgement bits.

14. The method according to claim 13 , wherein cancelling the transmission of the second uplink channel comprises cancelling a transmission of a first at least one frequency hop of the second uplink channel, where a third transmission occasion of the first at least one frequency hop overlaps in time with the first transmission occasion, and

wherein the method further comprises transmitting a second at least one frequency hop of the second uplink channel, where a fourth transmission occasion of the second at least one frequency hop does not overlap in time with the first transmission occasion.

15. An apparatus comprising:

a transceiver that communicates on a wireless communication network; and

a controller coupled to the transceiver, where the controller

determines a first transmission occasion and a first priority of a first uplink channel,

determines a second transmission occasion and a second priority of a second uplink channel, where the first priority is higher than the second priority, and where the first transmission occasion overlaps in time with the second transmission occasion,

determines a particular symbol of the second uplink channel to cancel a transmission of the second uplink channel based on the first transmission occasion overlapping in time with the second transmission occasion, and

cancels the transmission of the second uplink channel from the particular symbol,

wherein the controller detects a downlink control information format including scheduling information for the first uplink channel, and

wherein the particular symbol is determined at least based on timing related to detecting the downlink control information format.

16. The apparatus according to claim 15 ,

wherein the first transmission occasion partially overlaps in time with the second transmission occasion, and

wherein the second transmission occasion starts earlier than the first transmission occasion.

17. The apparatus according to claim 15 , wherein a start time of the particular symbol is no later than a start time of the first transmission occasion.

18. The apparatus according to claim 15 , wherein the particular symbol is determined based on a physical uplink shared channel timing capability.