Efficient BWP operation for sidelink operation
Apparatuses, methods, and systems are disclosed for selectively deactivating a bandwidth part. One apparatus 600 includes a transceiver 625 that receives 805 one or more UL BWP configurations and receives 810 a SL BWP configuration. Here, the one or more UL BWP configurations includes an active UL BWP and the SL BWP is associated with a first numerology. The apparatus 600 also includes a processor 605 that identifies 815 a second numerology of an active UL BWP and determines 820 whether the first numerology matches the second numerology. If the first numerology does not match the second numerology, the processor 605 selectively deactivates 825 one of the SL BWP and the active UL BWP.
1. A method of a UE comprising:
receiving one or more uplink bandwidth part (“BWP”) configurations for a serving cell, including an active uplink BWP;
receiving a configuration for a sidelink BWP for the serving cell, wherein the sidelink BWP is associated with a first numerology;
identifying a second numerology of the active uplink BWP;
determining whether the first numerology matches the second numerology; and
selectively deactivating one of the sidelink BWP or the active uplink BWP in response to the first numerology not matching the second numerology.
2. The method of claim 1 , wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises deactivating the sidelink BWP, the method further comprising: stopping sidelink communication on the serving cell.
3. The method of claim 2 , wherein the method further comprises:
receiving an instruction to switch to a second uplink BWP, the second uplink BWP having the first numerology that matches that of the sidelink BWP; and
reactivating the sidelink BWP in response to switching to the second uplink BWP.
4. The method of claim 1 , wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises switching from the active uplink BWP to a second uplink BWP that has the first numerology that matches that of the sidelink BWP.
5. The method of claim 3 , wherein multiple configured uplink BWPs have the numerology that matches that of the sidelink BWP, the method further comprising selecting the second uplink BWP from the multiple matching uplink BWPs using a selection rule.
6. The method of claim 1 , wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises deactivating the sidelink BWP in response to none of the one or more uplink BWP configurations having the first numerology that matches that of the sidelink BWP.
7. The method of claim 1 , further comprising:
receiving a control message from a network entity, the control message activating the sidelink BWP,
wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises deactivating the active uplink BWP in response to activating the sidelink BWP according to the control message.
8. The method of claim 1 , further comprising:
receiving a control message from a network entity, the control message activating the sidelink BWP,
wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises switching from the active uplink BWP to a second uplink BWP that has the first numerology that matches that of the sidelink BWP in response to activating the sidelink BWP according to the control message.
9. The method of claim 1 , further comprising:
receiving a control message from a network entity, the control message activating a configured uplink BWP having a different numerology than the sidelink BWP,
wherein selectively deactivating one of the sidelink BWP and the active uplink BWP comprises deactivating the sidelink BWP in response to activating the uplink BWP according to the control message.
10. The method of claim 1 , wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises:
providing a communication gap between uplink operation and sidelink operation; and
adjusting a transceiver to switch between the first numerology and second numerology during the communication gap.
11. The method of claim 1 , further comprising determining a priority of the sidelink BWP with respect to the active uplink BWP, wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises deactivating a lower priority one of the sidelink BWP or the active uplink BWP.
12. An apparatus comprising:
a transceiver that:
receives one or more uplink bandwidth part (“BWP”) configurations, including an active uplink BWP; and
receives a configuration for a sidelink BWP, wherein the sidelink BWP is associated with a first numerology; and
a processor that:
identifies a second numerology of an active uplink BWP;
determines whether the first numerology matches the second numerology; and
selectively deactivates one of the sidelink BWP or the active uplink BWP in response to the first numerology not matching the second numerology.
13. The apparatus of claim 12 ,
wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises deactivating the sidelink BWP,
wherein the processor further stops sidelink communication on the serving cell.
14. The method of claim 13 ,
wherein the transceiver further receives an instruction to switch to a second uplink BWP, the second uplink BWP having the first numerology that matches that of the sidelink BWP; and
wherein the processor reactivates the sidelink BWP in response to switching to the second uplink BWP.
15. The apparatus of claim 12 , wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises the processor switching from the active uplink BWP to a second uplink BWP that has the first numerology that matches that of the sidelink BWP.
16. The apparatus of claim 15 , wherein multiple configured uplink BWPs have the numerology that matches that of the sidelink BWP, wherein the processor selects the second uplink BWP from the multiple matching uplink BWPs using a selection rule.
17. The apparatus of claim 12 , wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises the processor deactivating the sidelink BWP in response to none of the one or more uplink BWP configurations having the first numerology that matches that of the sidelink BWP.
18. The apparatus of claim 12 , wherein the transceiver further receives a control message from a network entity, the control message activating the sidelink BWP, wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises the processor deactivating the active uplink BWP in response to activating the sidelink BWP according to the control message.
19. The apparatus of claim 12 , wherein the transceiver further receives a control message from a network entity, the control message activating the sidelink BWP, wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises the processor switching from the active uplink BWP to a second uplink BWP that has the first numerology that matches that of the sidelink BWP in response to activating the sidelink BWP according to the control message.
20. The apparatus of claim 12 , wherein the transceiver further receives a control message from a network entity, the control message activating a configured uplink BWP having a different numerology than the sidelink BWP, and wherein selectively deactivating one of the sidelink BWP or the active uplink BWP comprises the processor deactivating the sidelink BWP in response to activating the uplink BWP according to the control message.