Bandwidth part switching for sidelink communication
A wireless device receives one or more messages comprising configuration parameters. The configuration parameters indicate: a first plurality of bandwidth parts (BWPs) of a Uu link; and a second plurality of BWPs of a sidelink. A downlink control information (DCI) is received. The DCI indicates a first BWP of the first plurality of BWPs. The wireless device selects a second BWP, from the second plurality of BWPs, associated with the first BWP. In response to the reception of the DCI: the first BWP is activated; and the second BWP is activated.
1. A method comprising:
receiving, by a wireless device, one or more messages comprising configuration parameters indicating:
a first plurality of bandwidth parts (BWPs) of a Uu link;
a second plurality of BWPs of a sidelink; and
an association comprising a mapping relationship between one or more of the first plurality of BWPs and one or more of the second plurality of BWPs, wherein the associated BWPs are different from each other and have different BWP indexes;
receiving a downlink control information (DCI) indicating the one or more of the first plurality of BWPs;
selecting the one or more of the second plurality of BWPs, based on the association; and
in response to receiving the DCI:
activating the indicated one or more of the first plurality of BWPs; and
activating the selected one or more of the second plurality of BWPs, wherein the one or more of the first plurality of BWPs and the one or more of the second plurality of BWPs are activated at a same symbol.
2. The method of claim 1 , wherein the first plurality of BWPs of the Uu link comprise:
multiple downlink BWPs; or
multiple uplink BWPs.
3. The method of claim 1 , wherein receiving the DCI comprises receiving the DCI from a base station.
4. The method of claim 1 , wherein the one or more of the second plurality of BWPs associated with the one or more of the first plurality of BWPs have a different BWP index or a different frequency.
5. The method of claim 1 , wherein activating the one or more of the first plurality of BWPs comprises switching to the one or more of the first plurality of BWPs based on the DCI.
6. The method of claim 1 , wherein activating the one or more of the second plurality of BWPs comprises switching to the one or more of the second plurality of BWPs of the sidelink.
7. The method of claim 1 , wherein the wireless device activates the one or more of the first plurality of BWPs and the one or more of the second of plurality of BWPs at a same slot or a same subframe.
8. The method of claim 1 , wherein receiving the one or more messages comprises receiving the one or more messages from:
a base station; or
a second wireless device.
9. The method of claim 8 , wherein the second wireless device is a peer wireless device of the sidelink between the wireless device and the second wireless device.
10. The method of claim 1 , wherein the mapping relationship comprises a one-to-many relationship between a first BWP of the first plurality of BWPs of the Uu link and the second plurality of BWPs of the sidelink.
11. The method of claim 1 , wherein the mapping relationship comprises a many-to-one relationship between the first plurality of BWPs of the Uu link and a second BWP of the second plurality of BWPs of the sidelink.
12. The method of claim 1 , wherein the mapping relationship comprises a many-to-many relationship between the first plurality of BWPs of the Uu link and the second plurality of BWPs of the sidelink.
13. The method of claim 1 , wherein the mapping relationship comprises a one-to-one relationship between a first BWP of the first plurality of BWPs of the Uu link and a second BWP of the second plurality of BWPs of the sidelink.
14. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive one or more messages comprising configuration parameters indicating:
a first plurality of bandwidth parts (BWPs) of a Uu link;
a second plurality of BWPs of a sidelink; and
an association comprising a one to one mapping relationship between a first BWP of the first plurality of BWPs and a second BWP of the second plurality of BWPs, wherein the associated one to one mapped BWPs are different from each other and have different BWP indexes;
receive a downlink control information (DCI) indicating a first BWP of the first plurality of BWPs;
select the second BWP, from the second plurality of BWPs, based on the one to one mapping relationship between the first BWP and the second BWP association; and
in response to receiving the DCI:
activate the first BWP; and
activate the second BWP, wherein the activation of the first BWP and the activation of the second BWP are at a same symbol.
15. The wireless device of claim 14 , wherein the first plurality of BWPs of the Uu link comprise:
multiple downlink BWPs; or
uplink BWPs of the Uu link.
16. The wireless device of claim 14 , wherein the DCI comprises the instructions, when executed by the one or more processors, to cause the wireless device to receive the DCI from a base station.
17. The wireless device of claim 14 , wherein the second BWP associated with the first BWP comprises the second BWP having a different frequency as the first BWP.
18. The wireless device of claim 14 , wherein the activation of the first BWP comprises the instructions, when executed by the one or more processors, to cause the wireless device to switch to the first BWP based on the DCI.
19. The wireless device of claim 14 , wherein the activation of the second BWP comprises the instructions, when executed by the one or more processors, to cause the wireless device to switch to the second BWP of the sidelink.
20. The wireless device of claim 14 , wherein the activation of the first BWP and the activation of the second BWP are at a same slot or a same subframe.
21. The wireless device of claim 14 , wherein receiving the one or more messages comprises the instructions, when executed by the one or more processors, to cause the wireless device to receive the one or more messages from:
a base station; or
a second wireless device.
22. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:
receive one or more messages comprising configuration parameters indicating:
a first plurality of bandwidth parts (BWPs) of a Uu link;
a second plurality of BWPs of a sidelink; and
an association comprising a one to one mapping relationship between a first BWP of the first plurality of BWPs and a second BWP of the second plurality of BWPs, wherein the associated one to one mapped BWPs are different from each other and have different BWP indexes;
receive a downlink control information (DCI) indicating a first BWP of the first plurality of BWPs;
select the second BWP, from the second plurality of BWPs, based on the one to one mapping relationship between the first BWP and the second BWP association; and
in response to the receiving the DCI:
activate the first BWP; and
activate the second BWP, wherein the first BWP and the second BWPs are activated at a same symbol.