IP Library › Granted Patent US 12672155
Granted Patent B2
US 12672155 · App. 18/265,424 · Granted Jun 30, 2026

Carrier aggregation on sidelink

Inventors: Qing Li (Princeton Junction, NJ); Hong Cheng (Basking Ridge, NJ); Peng Cheng (Beijing, CN); Gavin Bernard Horn (La Jolla, CA); Gabi Sarkis (San Diego, CA); Tien Viet Nguyen (Bridgewater, NJ)
Assignee: Qualcomm Incorporated
H04W72/40H04W72/0453H04W88/06
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Quick Facts
Patent No.
US 12672155
App. No.
18/265,424
Granted
Jun 30, 2026
Kind
B2
Abstract

The present disclosure relates to methods and devices for wireless communication of an apparatus, e.g., a wireless device and/or a UE. In one aspect, the apparatus may receive a configuration for inter-RAT or intra-RAT sidelink carrier aggregation including one or more inter-RAT or intra-RAT CA parameters. The apparatus may also determine one or more inter-RAT or intra-RAT carriers for SL CA based on the configuration for inter-RAT or intra-RAT SL CA. The apparatus may also transmit, to at least one second wireless device, an indication of the one or more inter-RAT or intra-RAT carriers for SL CA.

Claims (57)

1 . A method of wireless communication of a first wireless device, comprising:

receiving a configuration for inter-radio access technology (inter-RAT) or intra-RAT sidelink (SL) carrier aggregation (CA) including one or more inter-RAT or intra-RAT CA parameters;

determining one or more inter-RAT or intra-RAT carriers for SL CA based on the configuration for inter-RAT or intra-RAT SL CA; and

transmitting, to at least one second wireless device, an indication of the one or more inter-RAT or intra-RAT carriers determined for SL CA, wherein the first wireless device includes a first user equipment (UE) and the at least one second wireless device includes at least one second UE.

2 . The method of claim 1 , further comprising:

selecting the one or more inter-RAT or intra-RAT carriers from a plurality of candidate inter-RAT or intra-RAT carriers based on the configuration for inter-RAT or intra-RAT SL CA.

3 . The method of claim 2 , further comprising:

measuring at least one of a channel busy ratio (CBR), a reference signal received power (RSRP), or a received signal strength indicator (RSSI) of each of the plurality of candidate inter-RAT or intra-RAT carriers.

4 . The method of claim 3 , wherein the one or more inter-RAT or intra-RAT carriers are selected based on the measurement of at least one of the CBR, RSRP, or RSSI of each of the plurality of candidate inter-RAT or intra-RAT carriers.

5 . The method of claim 2 , further comprising:

re-selecting or dropping the one or more inter-RAT or intra-RAT carriers from the plurality of candidate inter-RAT or intra-RAT carriers; or

selecting one or more other inter-RAT or intra-RAT carriers from the plurality of candidate inter-RAT or intra-RAT carriers, wherein the one or more other inter-RAT or intra-RAT carriers are selected if the one or more inter-RAT or intra-RAT carriers are dropped.

6 . The method of claim 5 , further comprising:

measuring at least one of a channel busy ratio (CBR), a reference signal received power (RSRP), or a received signal strength indicator (RSSI) of the plurality of candidate inter-RAT or intra-RAT carriers, wherein the one or more inter-RAT or intra-RAT carriers are re-selected or dropped based on the measurement and the one or more other inter-RAT or intra-RAT carriers are selected based on the measurement.

7 . The method of claim 2 , further comprising:

communicating with the at least one second wireless device via one or more sidelinks (SLs) based on the one or more inter-RAT or intra-RAT carriers selected for SL CA.

8 . The method of claim 7 , wherein one or more packets for a first RAT are communicated via at least one of a first RAT carrier or a second RAT carrier.

9 . The method of claim 1 , wherein, if the first wireless device is within a coverage of a base station, the configuration for inter-RAT or intra-RAT SL CA is received from the base station via radio resource control (RRC) signaling, wherein the configuration is a user equipment (UE)-specific configuration.

10 . The method of claim 1 , wherein, if the first wireless device is within a coverage of a base station, the configuration for inter-RAT or intra-RAT SL CA is received from the base station via system information (SI) or a system information block (SIB), wherein the configuration is a common configuration.

11 . The method of claim 1 , wherein, if the first wireless device is outside of a coverage of a base station, the first wireless device is preconfigured with the configuration for inter-RAT or intra-RAT SL CA.

12 . The method of claim 1 , wherein the one or more inter-RAT or intra-RAT CA parameters are associated with at least one of sidelink inter-RAT CA with coexistence or intra-RAT CA, one or more carriers or carrier combinations for inter-RAT CA with coexistence or intra-RAT CA, or one or more carriers or carrier combinations blocked for inter-RAT CA with coexistence or intra-RAT CA.

13 . The method of claim 1 , further comprising:

transmitting, to the at least one second wireless device, the configuration for inter-RAT or intra-RAT SL CA.

14 . The method of claim 1 , wherein the indication of the one or more inter-RAT or intra-RAT carriers is transmitted via radio resource control (RRC) signaling or a medium access control (MAC) control element (MAC-CE).

15 . The method of claim 1 , further comprising:

receiving, from the at least one second wireless device, a confirmation of the indication of the one or more inter-RAT or intra-RAT carriers.

16 . The method of claim 15 , wherein the confirmation of the indication of the one or more inter-RAT or intra-RAT carriers is received via radio resource control (RRC) signaling or an acknowledgement (ACK) to a medium access control (MAC) control element (MAC-CE).

17 . The method of claim 1 , further comprising:

transmitting, to a base station, at least one of an indication of a capability of the first wireless device or a suitable configuration for inter-RAT or intra-RAT SL CA.

18 . The method of claim 1 , wherein the first wireless device supports communication via one or more RATs for inter-RAT or intra-RAT CA, the one or more RATs including at least one of new radio (NR) or long-term evolution (LTE).

19 . The method of claim 1 , wherein the first wireless device supports communication via multiple RATs and the at least one second wireless device supports communication via at least one RAT.

20 . An apparatus for wireless communication, the apparatus being a first wireless device, comprising:

memory; and

at least one processor coupled to the memory and configured to cause the apparatus to:

receive a configuration for inter-radio access technology (inter-RAT) or intra-RAT sidelink (SL) carrier aggregation (CA) including one or more inter-RAT or intra-RAT CA parameters;

determine one or more inter-RAT or intra-RAT carriers for SL CA based on the configuration for inter-RAT or intra-RAT SL CA; and

transmit, to at least one second wireless device, an indication of the one or more inter-RAT or intra-RAT carriers for SL CA, wherein the first wireless device includes a first user equipment (UE) and the at least one second wireless device includes at least one second UE.

21 . A method of wireless communication of a first wireless device, comprising:

receiving a configuration for inter-radio access technology (inter-RAT) or intra-RAT sidelink (SL) carrier aggregation (CA) including one or more inter-RAT or intra-RAT CA parameters;

receiving, from a second wireless device, an indication of one or more inter-RAT or intra-RAT carriers for SL CA, wherein the first wireless device includes a first user equipment (UE) and the second wireless device includes a second UE; and

monitoring, based on the received indication, the one or more inter-RAT or intra-RAT carriers for SL CA.

22 . The method of claim 21 , further comprising:

communicating with the second wireless device via one or more sidelinks (SLs) based on the one or more inter-RAT or intra-RAT carriers for SL CA.

23 . The method of claim 22 , wherein one or more packets for a first RAT are communicated via at least one of a first RAT carrier or a second RAT carrier.

24 . The method of claim 21 , wherein, if the first wireless device is within a coverage of a base station, the configuration for inter-RAT or intra-RAT SL CA is received from the base station via radio resource control (RRC) signaling, wherein the configuration is a user equipment (UE)-specific configuration.

25 . The method of claim 21 , wherein, if the first wireless device is within a coverage of a base station, the configuration for inter-RAT or intra-RAT SL CA is received from the base station via system information (SI) or a system information block (SIB), wherein the configuration is a common configuration.

26 . The method of claim 21 , wherein, if the first wireless device is outside of a coverage of a base station, the first wireless device is preconfigured with the configuration for inter-RAT or intra-RAT SL CA.

27 . The method of claim 21 , wherein, if the first wireless device is outside of a coverage of a base station, the configuration for inter-RAT or intra-RAT SL CA is received from the second device.

28 . The method of claim 21 , wherein the one or more inter-RAT or intra-RAT CA parameters are associated with at least one of sidelink inter-RAT CA with coexistence or intra-RAT CA, one or more carriers or carrier combinations for inter-RAT CA with coexistence or intra-RAT CA, or one or more carriers or carrier combinations blocked for inter-RAT CA with coexistence or intra-RAT CA.

29 . The method of claim 21 , further comprising:

transmitting, to the second wireless device, a confirmation of the indication of the one or more inter-RAT or intra-RAT carriers, wherein the confirmation of the indication of the one or more inter-RAT or intra-RAT carriers is transmitted via radio resource control (RRC) signaling or an acknowledgement (ACK) to a medium access control (MAC) control element (MAC-CE).

30 . An apparatus for wireless communication, the apparatus being a first wireless device, comprising:

memory; and

at least one processor coupled to the memory and configured to cause the apparatus to:

receive a configuration for inter-radio access technology (inter-RAT) or intra-RAT sidelink (SL) carrier aggregation (CA) including one or more inter-RAT or intra-RAT CA parameters;

receive, from a second wireless device, an indication of one or more inter-RAT or intra-RAT carriers for SL CA, wherein the first wireless device includes a first user equipment (UE) and the second wireless device includes a second UE; and

monitor, based on the received indication, the one or more inter-RAT or intra-RAT carriers for SL CA.