Frequency hopping within a virtual bandwidth part
Various aspects of the present disclosure generally relate to frequency hopping within a virtual BWP. In some aspects, a UE may determine a virtual bandwidth part (BWP) in which to frequency hop from a first narrow BWP to a second narrow BWP by a frequency offset. The virtual BWP may have a same subcarrier spacing as the first narrow BWP and a larger bandwidth than the first narrow BWP. The UE may perform communication based at least in part on frequency hopping within the virtual BWP. Numerous other aspects are provided.
1. A method of wireless communication performed by a user equipment (UE), comprising:
determining a virtual bandwidth part (BWP) in which to frequency hop from a first narrow BWP to a second narrow BWP by a frequency offset, wherein the virtual BWP has a same subcarrier spacing as the first narrow BWP, and wherein a bandwidth of the virtual BWP is larger than a bandwidth of the first narrow BWP; and
performing communication based at least in part on frequency hopping within the virtual BWP.
2. The method of claim 1 , further comprising determining a starting frequency resource for the frequency hopping based at least in part on the bandwidth of the virtual BWP and a size of the frequency offset.
3. The method of claim 2 , wherein a starting frequency location of the virtual BWP is different than a starting frequency location of the first narrow BWP, and wherein the method further comprises determining the starting frequency resource for the frequency hopping based on a difference between the starting frequency location of the virtual BWP and the starting frequency location of the first narrow BWP.
4. The method of claim 1 , wherein the virtual BWP is larger than a maximum channel bandwidth for the UE and the first narrow BWP is equal to or smaller than the maximum channel bandwidth for the UE.
5. The method of claim 1 , further comprising determining the frequency offset based at least in part on a frequency hopping indicator bit in downlink control information.
6. The method of claim 5 , wherein the frequency hopping indicator bit is jointly encoded with a frequency domain resource assignment bit to indicate the frequency offset from among a set of configured offsets.
7. The method of claim 1 , further comprising determining the frequency offset based at least in part on a joint encoding of a flag bit, a frequency hopping indicator bit, and a frequency domain resource assignment bit in downlink control information.
8. The method of claim 7 , further comprising determining a pattern for the frequency hopping based at least in part on the joint encoding of the flag bit, the frequency hopping indicator bit, and the frequency domain resource assignment bit in the downlink control information.
9. The method of claim 8 , wherein the pattern for the frequency hopping is one of frequency hopping within the first narrow BWP or frequency hopping within the virtual BWP.
10. The method of claim 1 , further comprising determining a type of resource allocation based at least in part on a joint encoding of a flag bit, a frequency hopping indicator bit, and a frequency domain resource assignment bit in downlink control information, and wherein performing the communication includes performing the frequency hopping within the virtual BWP based at least in part on the type of resource allocation.
11. A method of wireless communication performed by a base station, comprising:
determining a virtual bandwidth part (BWP) in which a user equipment (UE) is to frequency hop from a first narrow BWP to a second narrow BWP by a frequency offset, wherein the virtual BWP has a same subcarrier spacing as the first narrow BWP, and wherein a bandwidth of the virtual BWP is larger than a bandwidth of the first narrow BWP; and
performing communication with the UE based at least in part on frequency hopping by the UE within the virtual BWP.
12. The method of claim 11 , further comprising transmitting information indicating the virtual BWP.
13. The method of claim 11 , wherein a starting frequency resource for the frequency hopping is based at least in part on the bandwidth of the virtual BWP and a size of the frequency offset.
14. The method of claim 13 , wherein a starting frequency location of the virtual BWP is different than a starting frequency location of the first narrow BWP, and the starting frequency resource for the frequency hopping is based on a difference between the starting frequency location of the virtual BWP and the starting frequency location of the first narrow BWP.
15. The method of claim 11 , wherein the virtual BWP is larger than a maximum channel bandwidth for the UE and the first narrow BWP is equal to or smaller than the maximum channel bandwidth for the UE.
16. The method of claim 11 , further comprising transmitting an indication of the frequency offset by a frequency hopping indicator bit in downlink control information.
17. The method of claim 11 , further comprising transmitting an indication of the frequency offset by jointly encoding a frequency domain resource assignment bit and a frequency hopping indicator bit in downlink control information.
18. The method of claim 11 , further comprising transmitting an indication of the frequency offset by jointly encoding a flag bit, a frequency hopping indicator bit, and a frequency domain resource assignment bit in downlink control information.
19. The method of claim 18 , further comprising transmitting an indication of a pattern for frequency hopping based at least in part on the joint encoding of the flag bit, the frequency hopping indicator bit, and the frequency domain resource assignment bit in the downlink control information.
20. The method of claim 19 , wherein the pattern is one of frequency hopping within the first narrow BWP or frequency hopping with the virtual BWP.
21. The method of claim 11 , further comprising transmitting an indication of a type of resource allocation based at least in part on jointly encoding a flag bit, a frequency hopping indicator bit, and a frequency domain resource assignment bit in downlink control information.
22. A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors coupled to the memory and configured to:
determine a virtual bandwidth part (BWP) in which to frequency hop from a first narrow BWP to a second narrow BWP by a frequency offset, wherein the virtual BWP has a same subcarrier spacing as the first narrow BWP, and wherein a bandwidth of the virtual BWP is larger than a bandwidth of the first narrow BWP; and
perform communication based at least in part on frequency hopping within the virtual BWP.
23. The UE of claim 22 , wherein the one or more processors are configured to determine a starting frequency resource for the frequency hopping based at least in part on the bandwidth of the virtual BWP and a size of the frequency offset.
24. The UE of claim 23 , wherein a starting frequency location of the virtual BWP is different than a starting frequency location of the first narrow BWP, and wherein the one or more processors are configured to determine the starting frequency resource for the frequency hopping based on a difference between the starting frequency location of the virtual BWP and the starting frequency location of the first narrow BWP.
25. The UE of claim 22 , wherein the virtual BWP is larger than a maximum channel bandwidth for the UE and the first narrow BWP is equal to or smaller than the maximum channel bandwidth for the UE.
26. The UE of claim 22 , wherein the one or more processors are configured to determine the frequency offset based at least in part on a frequency hopping indicator bit in downlink control information.
27. The UE of claim 26 , wherein the frequency hopping indicator bit is jointly encoded with a frequency domain resource assignment bit to indicate the frequency offset from among a set of configured offsets.
28. The UE of claim 26 , wherein the one or more processors are configured to determine the frequency offset further based at least in part on a joint encoding of a flag bit, a frequency hopping indicator bit, and a frequency domain resource assignment bit in downlink control information.
29. The UE of claim 28 , wherein the one or more processors are configured to determine a pattern for the frequency hopping based at least in part on the joint encoding of the flag bit, the frequency hopping indicator bit, and the frequency domain resource assignment bit in the downlink control information, and wherein the pattern for the frequency hopping is one of frequency hopping within the first narrow BWP or frequency hopping within the virtual BWP.
30. A base station for wireless communication, comprising:
a memory; and
one or more processors coupled to the memory and configured to:
determine a virtual bandwidth part (BWP) in which a user equipment (UE) is to frequency hop from a first narrow BWP to a second narrow BWP by a frequency offset, wherein the virtual BWP has a same subcarrier spacing as the first narrow BWP, and wherein a bandwidth of the virtual BWP is larger than a bandwidth of the first narrow BWP; and
perform communication with the UE based at least in part on frequency hopping by the UE within the virtual BWP.