Techniques for inter-slot and intra-slot frequency hopping in full duplex
Certain aspects of the present disclosure provide techniques for inter-slot and intra-slot frequency hopping in full duplex. A method performed by a user equipment (UE) includes receiving scheduling information from a network entity, wherein the scheduling information schedules transmission of a plurality of uplink data channel repetitions in a plurality of slots according to a frequency hopping scheme that configures frequency hops between transmissions of repetitions of the plurality of uplink data channel repetitions. The method also includes taking one or more actions related to transmitting, according to the frequency hopping scheme, the plurality of uplink data channel repetitions in the plurality of slots based on the scheduling information.
1. A method of wireless communication by a user equipment (UE), comprising:
receiving scheduling information from a network entity, wherein:
the scheduling information schedules transmission of at least one uplink channel transmission in a full duplex (FD) slot according to a frequency hopping scheme that configures frequency hops between different portions of the at least one uplink channel transmission in the FD slot,
the FD slot includes an uplink subband and a downlink subband of a larger bandwidth part (BWP), and
the scheduling information indicates at least one starting resource block (RB) for the at least one uplink channel transmission and at least one RB offset, selected from a set of RB offsets, for the at least one uplink channel transmission, wherein the set of RB offsets from which the at least one RB offset is selected for the FD slot is different from another set of RB offsets for a non-FD slot; and
taking one or more actions related to transmitting, according to the frequency hopping scheme, the at least one uplink channel transmission in the FD slot based on the scheduling information.
2. The method of claim 1 , wherein:
the scheduling information schedules:
a first portion of the at least one uplink channel transmission in the FD slot,
a second portion of the at least one uplink channel transmission in the FD slot, and
a frequency hop between the first portion of the at least one uplink channel transmission and the second portion of the uplink channel transmission,
a first starting RB in the FD slot for the first portion comprises the starting RB indicated in the scheduling information for the FD slot, and
a second starting RB in the FD slot for the second portion is based on the at least one RB offset indicated in the scheduling information for the FD slot.
3. The method of claim 2 , wherein:
when the uplink subband of the FD slot comprises a number of RBs less than a threshold, the set of RB offsets from which the at least one RB offset is selected comprises greater than two RB offsets, and
when the uplink subband of the FD slot comprises a number of RBs greater than or equal to the threshold, the set of RB offsets from which the at least one RB offset is selected comprises greater than four RB offsets.
4. The method of claim 2 , wherein the second starting RB is further based on the at least one starting RB indicated in the scheduling information for the FD slot and a size of the uplink subband of the FD slot.
5. The method of claim 2 , further comprising determining that at least a part of the second portion of the at least one uplink channel transmission is scheduled to occur outside of the uplink subband of the FD slot.
6. The method of claim 5 , wherein, based on the determination that the part of the second portion of the at least one uplink channel transmission is scheduled to occur outside of the uplink subband of the FD slot, taking the one or more actions comprises dropping the first portion and the second portion of the at least one uplink channel transmission from being transmitted in the FD slot.
7. The method of claim 5 , wherein, based on the determination that the part of the second portion of the at least one uplink channel transmission is scheduled to occur outside of the uplink subband of the FD slot, taking the one or more actions compromise:
ignoring the frequency hop scheduled between the first portion of the at least one uplink channel transmission and the second portion of the at least one uplink channel transmission, and
transmitting the first portion of the at least one uplink channel transmission and the second portion of the at least one uplink channel transmission based on the at least one starting RB within the FD slot.
8. The method of claim 5 , further comprising:
receiving, from the network entity, an indication of a threshold number of RBs;
determining whether a number of RBs in the part of the second portion of the at least one uplink channel transmission scheduled to occur outside of the uplink subband of the FD slot is greater than the threshold number of RBs; and
one of:
when, based on the determination, the number of RBs in the part of the second portion scheduled to occur outside the uplink subband of the FD slot is greater than the threshold number of RBs, taking the one or more actions comprises dropping the first portion and the second portion from being transmitted in the FD slot, and
when, based on the determination, the number of RBs in the part of the second portion scheduled to occur outside the uplink subband of the FD slot is not greater than the threshold number of RBs, taking the one or more actions comprises:
puncturing the number of RBs scheduled to occur outside the uplink subband, and
transmitting at least a remaining number of RBs of the second portion of the at least one uplink channel transmission within the uplink subband of the FD slot based on the second starting RB.
9. The method of claim 5 , further comprising applying an offset to the second starting RB for the second portion of the at least one uplink channel transmission such that the second portion of the at least one uplink channel transmission is fully contained in the uplink subband of the FD slot, wherein taking the one or more actions comprises:
transmitting the first portion of the at least one uplink channel transmission in the FD slot based on the first starting RB, and
transmitting the second portion of the at least one uplink channel transmission in the FD slot based the second starting RB and the applied offset.
10. The method of claim 5 , further comprising determining the second starting RB based on a first RB of the uplink subband of the FD slot and the at least one RB offset indicated in the scheduling information for the FD slot, wherein taking the one or more actions comprises:
transmitting the first portion of the at least one uplink channel transmission in the FD slot based on the first starting RB, and
transmitting the second portion of the at least one uplink channel transmission in the FD slot based on the second starting RB.
11. The method of claim 1 , wherein:
the at least one RB offset is indicated via a dedicated bitfield in the scheduling information, or
the at least one RB offset is indicated via a dedicated bitfield in the scheduling information and additional bits determined based on a size of the uplink subband of the FD slot.
12. A method of wireless communication by a user equipment (UE), comprising:
receiving scheduling information from a network entity, wherein:
the scheduling information schedules transmission of a plurality of uplink data channel repetitions in a plurality of slots according to a frequency hopping scheme that configures frequency hops between transmissions of repetitions of the plurality of uplink data channel repetitions,
the plurality of slots comprise at least a full duplex (FD) slot including an uplink subband and a downlink subband of a larger bandwidth part (BWP), and
the scheduling information indicates:
at least one starting resource block (RB) for the plurality of uplink data channel repetitions,
at least one RB offset, selected from a set of RB offsets, for the plurality of uplink data channel repetitions, wherein the set of RB offsets from which the at least one RB offset is selected for the FD slot is different from another set of RB offsets for a non-FD slot, and
a number of repetitions in the plurality of uplink data channel repetitions; and
taking one or more actions related to transmitting, according to the frequency hopping scheme, the plurality of uplink data channel repetitions in the plurality of slots based on the scheduling information.
13. The method of claim 12 , wherein:
the scheduling information schedules repetitions of the plurality of uplink data channel repetitions in different slots of the plurality of slots, including a first repetition in a non-FD slot and a second repetition in the FD slot,
the first repetition in the non-FD slot is associated with the least one starting RB indicated in the scheduling information, and
the second repetition in the FD slot is associated with a second starting RB.
14. The method of claim 13 , further comprising:
dividing the BWP of the FD slot into a plurality of frequency segments, each frequency segment of a size equal to or approximately equal to an RB allocation of the second repetition; and
selecting a frequency segment of the plurality of frequency segments corresponding to the uplink subband of the FD slot based on at least one of a slot number associated with the FD slot or a radio temporary network identifier (RNTI), wherein:
the second starting RB associated with the second repetition is selected to be in the selected frequency segment, and
taking the one or more actions comprises:
transmitting the first repetition in the non-FD slot based on the first starting RB, and
transmitting the second repetition in the FD slot based on the second starting RB.
15. The method of claim 13 , further comprising determining the second starting RB in the FD slot for the second repetition based on:
the at least one starting RB indicated in the scheduling information, or
the at least one starting RB indicated in the scheduling information and the at least one RB offset indicated in the scheduling information.
16. The method of claim 15 , wherein:
whether the second starting RB is determined based on the at least one starting RB or the at least one starting RB and the at least one RB offset depends on whether the FD slot is an odd slot or an even slot,
when the FD slot comprises an even slot, the second starting RB in the FD slot associated with the second repetition comprises the at least one starting RB indicated in the scheduling information, and
when the FD slot comprises an odd slot, the second starting RB in the FD slot associated with the second repetition is based on the at least one starting RB indicated in the scheduling information and the at least one RB offset indicated in the scheduling information.
17. The method of claim 16 , further comprising determining a set of frequencies over which the second repetition is to be transmitted in the FD slot based, at least, on the second starting RB.
18. The method of claim 17 , wherein taking the one or more actions comprises dropping transmission of the second repetition in the FD slot when the set of frequencies over which the second repetition is to be transmitted in the FD slot are not contained within the uplink subband of the FD slot.
19. The method of claim 17 , wherein, when the set of frequencies over which the first repetition is to be transmitted in the FD slot are not contained within the uplink subband of the FD slot:
the FD slot is not considered as an available slot for transmission of the second repetition by the UE, and
based on the FD slot being considered as not available, taking the one or more actions comprises transmitting the second repetition in a subsequent available slot.
20. The method of claim 15 , wherein:
determining the second starting RB in the FD slot associated with the second repetition is based further on a reference RB, and
taking the one or more actions comprises transmitting the second repetition in the FD slot based on the reference RB.
21. The method of claim 20 , further comprising receiving an indication of the reference RB from the network entity.
22. The method of claim 20 , wherein the reference RB is non-zero for the FD slot and zero for the non-FD slot.
23. The method of claim 15 , wherein:
determining the second starting RB in the FD slot associated with the second repetition is based further on a size of the uplink subband of the FD slot, and
taking the one or more actions comprises transmitting the second repetition in the second FD slot based on the second starting RB.
24. An apparatus, comprising:
a memory comprising executable instructions; and
a processor configured to execute the executable instructions and cause the apparatus to:
receive scheduling information from a network entity, wherein:
the scheduling information schedules transmission of at least one uplink channel transmission in a full duplex (FD) slot according to a frequency hopping scheme that configures frequency hops between different portions of the at least one uplink channel transmission in the FD slot,
the FD slot includes an uplink subband and a downlink subband of a larger bandwidth part (BWP), and
the scheduling information indicates at least one starting resource block (RB) for the at least one uplink channel transmission and at least one RB offset, selected from a set of RB offsets, for the at least one uplink channel transmission, wherein the set of RB offsets from which the at least one RB offset is selected for the FD slot is different from another set of RB offsets for a non-FD slot; and
take one or more actions related to transmitting, according to the frequency hopping scheme, the at least one uplink channel transmission in the FD slot based on the scheduling information.
25. The apparatus of claim 24 , wherein:
the scheduling information schedules:
a first portion of the at least one uplink channel transmission in the FD slot,
a second portion of the at least one uplink channel transmission in the FD slot, and
a frequency hop between the first portion of the at least one uplink channel transmission and the second portion of the uplink channel transmission,
a first starting RB in the FD slot for the first portion comprises the starting RB indicated in the scheduling information for the FD slot, and
a second starting RB in the FD slot for the second portion is based on the at least one RB offset indicated in the scheduling information for the FD slot.
26. The apparatus of claim 25 , wherein:
when the uplink subband of the FD slot comprises a number of RBs less than a threshold, the set of RB offsets from which the at least one RB offset is selected comprises greater than two RB offsets, and
when the uplink subband of the FD slot comprises a number of RBs greater than or equal to the threshold, the set of RB offsets from which the at least one RB offset is selected comprises greater than four RB offsets.
27. An apparatus, comprising:
a memory comprising executable instructions; and
a processor configured to execute the executable instructions and cause the apparatus to:
receive scheduling information from a network entity, wherein:
the scheduling information schedules transmission of a plurality of uplink data channel repetitions in a plurality of slots according to a frequency hopping scheme that configures frequency hops between transmissions of repetitions of the plurality of uplink data channel repetitions,
the plurality of slots comprise at least a full duplex (FD) slot including an uplink subband and a downlink subband of a larger bandwidth part (BWP), and
the scheduling information indicates:
at least one starting resource block (RB) for the plurality of uplink data channel repetitions,
at least one RB offset, selected from a set of RB offsets, for the plurality of uplink data channel repetitions, wherein the set of RB offsets from which the at least one RB offset is selected for the FD slot is different from another set of RB offsets for a non-FD slot, and
a number of repetitions in the plurality of uplink data channel repetitions; and
take one or more actions related to transmitting, according to the frequency hopping scheme, the plurality of uplink data channel repetitions in the plurality of slots based on the scheduling information.
28. The apparatus of claim 27 , wherein:
the scheduling information schedules repetitions of the plurality of uplink data channel repetitions in different slots of the plurality of slots, including a first repetition in a non-FD slot and a second repetition in the FD slot,
the first repetition in the non-FD slot is associated with the least one starting RB indicated in the scheduling information, and
the second repetition in the FD slot is associated with a second starting RB.
29. The apparatus of claim 28 , wherein the processor is further configured to cause the apparatus to determine the second starting RB in the FD slot for the second repetition based on:
the at least one starting RB indicated in the scheduling information, or
the at least one starting RB indicated in the scheduling information and the at least one RB offset indicated in the scheduling information.