Techniques for beamforming for multiple component carriers in wireless communications
Some aspects described herein relate to transmitting, by a first node to a second node, indications of one or more groups of component carriers (CCs) that share a beamformer at the first node. Some aspects additionally or alternatively relate to receiving, by the first node from the second node, indications of one or more groups of CCs that share a beamformer at the second node. The nodes may beamform antenna resources for communications based on the indications.
1. An apparatus for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
transmit, to a second node, a first indication that at least a group of component carriers (CCs) in different frequency bands share a beamformer at the apparatus;
receive, from the second node, a configuration indicating the group of CCs to use for communicating with the second node, wherein the group of CCs includes a first CC in a first frequency band and a second CC in a second frequency band, wherein the first frequency band and the second frequency band are different frequency bands; and
beamform, by the apparatus and based on the first indication, antenna resources for at least one of transmitting signals to, or receiving signals from, the second node over each of the CCs in the group of CCs using the beamformer.
2. The apparatus of claim 1 , wherein the configuration indicates the CCs in the group of CCs as having a same quasi-colocation (QCL) assumption.
3. The apparatus of claim 1 , wherein the one or more processors are configured to beamform the antenna resources at least in part by applying a same spatial relation for antenna resources for receiving the signals from the second node over each of the CCs in the group of CCs.
4. The apparatus of claim 1 , wherein the one or more processors are configured to beamform the antenna resources at least in part by applying a same spatial relation for antenna resources for transmitting the signals to the second node over each of the CCs in the group of CCs.
5. The apparatus of claim 1 , wherein the one or more processors are configured to beamform the antenna resources at least in part by controlling one or more parameters of multiple antennas at the apparatus to achieve a directional beam for transmitting the signals to, or receiving the signals from, the second node over each of the CCs in the group of CCs.
6. The apparatus of claim 1 , wherein the group of CCs in the different frequency bands are configured in carrier aggregation for the apparatus.
7. The apparatus of claim 1 , wherein the one or more processors are configured to receive the configuration based on transmitting the first indication.
8. The apparatus of claim 1 , wherein the apparatus is a user equipment (UE) and the second node is a network node.
9. A method for wireless communication, comprising:
transmitting, by a first node to a second node, a first indication that at least a group of component carriers (CCs) in different frequency bands share a beamformer at the first node;
receiving, by the first node from the second node, a configuration indicating the group of CCs to use for communicating with the second node, wherein the group of CCs includes a first CC in a first frequency band and a second CC in a second frequency band, wherein the first frequency band and the second frequency band are different frequency bands; and
beamforming, by the first node and based on the first indication, antenna resources for at least one of transmitting signals to, or receiving signals from, the second node over each of the CCs in the group of CCs using the beamformer.
10. The method of claim 9 , wherein the configuration indicates the CCs in the group of CCs as having a same quasi-colocation (QCL) assumption.
11. The method of claim 9 , wherein beamforming the antenna resources includes applying a same spatial relation for antenna resources for receiving the signals from the second node over each of the CCs in the group of CCs.
12. The method of claim 9 , wherein beamforming the antenna resources includes applying a same spatial relation for antenna resources for transmitting the signals to the second node over each of the CCs in the group of CCs.
13. The method of claim 9 , wherein beamforming the antenna resources includes controlling one or more parameters of multiple antennas at the first node to achieve a directional beam for transmitting the signals to, or receiving the signals from, the second node over each of the CCs in the group of CCs.
14. The method of claim 9 , wherein the group of CCs in the different frequency bands are configured in carrier aggregation for the first node.
15. The method of claim 9 , wherein receiving the configuration is based on transmitting the first indication.
16. The method of claim 9 , wherein the first node is a user equipment (UE) and the second node is a network node.
17. An apparatus for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
receive, from a second node, a first indication that at least a group of component carriers (CCs) in different frequency bands share a beamformer at the apparatus;
transmit, to the second node, a configuration indicating the group of CCs to use for communicating with the second node, wherein the group of CCs includes a first CC in a first frequency band and a second CC in a second frequency band, wherein the first frequency band and the second frequency band are different frequency bands; and
beamform, by the apparatus and based on the first indication, antenna resources for at least one of transmitting signals to, or receiving signals from, the second node over each of the CCs in the group of CCs using the beamformer.
18. The apparatus of claim 17 , wherein the configuration indicates the CCs in the group of CCs as having a same quasi-colocation (QCL) assumption.
19. The apparatus of claim 17 , wherein the one or more processors are configured to beamform the antenna resources at least in part by applying a same spatial relation for antenna resources for transmitting the signals to the second node over each of the CCs in the group of CCs.
20. The apparatus of claim 17 , wherein the one or more processors are configured to beamform the antenna resources at least in part by applying a same spatial relation for antenna resources for receiving the signals from the second node over each of the CCs in the group of CCs.
21. The apparatus of claim 17 , wherein the one or more processors are configured to beamform the antenna resources at least in part by controlling one or more parameters of multiple antennas at the apparatus to achieve a directional beam for transmitting the signals to, or receiving the signals from, the second node over each of the CCs in the group of CCs.
22. The apparatus of claim 17 , wherein the group of CCs in the different frequency bands are configured in carrier aggregation for the apparatus.
23. The apparatus of claim 17 , wherein the one or more processors are configured to transmit the configuration based on receiving the first indication.
24. A method for wireless communication, comprising:
receiving, by a first node and from a second node, a first indication that at least a group of component carriers (CCs) in different frequency bands share a beamformer at the first node;
transmitting, by the first node and to the second node, a configuration indicating the group of CCs to use for communicating with the second node, wherein the group of CCs includes a first CC in a first frequency band and a second CC in a second frequency band, wherein the first frequency band and the second frequency band are different frequency bands; and
beamforming, by the first node and based on the first indication, antenna resources for at least one of transmitting signals to, or receiving signals from, the second node over each of the CCs in the group of CCs using the beamformer.
25. The method of claim 24 , wherein the configuration indicates the CCs in the group of CCs as having a same quasi-colocation (QCL) assumption.
26. The method of claim 24 , wherein beamforming the antenna resources includes applying a same spatial relation for antenna resources for transmitting the signals to the second node over each of the CCs in the group of CCs.
27. The method of claim 24 , wherein beamforming the antenna resources includes applying a same spatial relation for antenna resources for receiving the signals from the second node over each of the CCs in the group of CCs.
28. The method of claim 24 , wherein beamforming the antenna resources includes controlling one or more parameters of multiple antennas at the first node to achieve a directional beam for transmitting the signals to, or receiving the signals from, the second node over each of the CCs in the group of CCs.
29. The method of claim 24 , wherein the group of CCs in the different frequency bands are configured in carrier aggregation for the first node.
30. The method of claim 24 , wherein transmitting the configuration is based on receiving the first indication.