IP Library › Granted Patent US 12,408,229

Granted Patent B2

US 12,408,229 · App. 17/951,442 · Granted Sep 2, 2025

Establishing radio bearers on millimeter wave frequencies for device-to-device communications

Inventors: Jose Edson Vargas (San Diego, CA); Zhibin Wu (Los Altos, CA); Kapil Gulati (Belle Mead, NJ); Junyi Li (Fairless Hills, PA); Sudhir Kumar Baghel (Fremont, CA)

Assignee: QUALCOMM Incorporated

H04W76/27 H04B1/0064 H04W8/005 H04W28/0268 H04W76/15 H04W76/19

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Quick Facts

Patent No.: US 12,408,229
App. No.: 17/951,442
Granted: Sep 2, 2025
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

Disclosed are techniques for wireless communication. In an aspect, a first user equipment (UE) establishes a radio resource control (RRC) connection for a communication session with a second UE, establishes a signaling radio bearer (SRB) for the communication session with the second UE on a first frequency band, sends, to the second UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band, the first RRC message including one or more parameters for establishing the DRB on the second frequency band, and configures the DRB on the second frequency band based on the one or more parameters in the first RRC message and/or a device-to-device discovery procedure performed in the first frequency band.

Claims (178)

1. An apparatus for wireless communication at a first user equipment (UE), comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more processors, either alone or in combination, configured to:

establish a signaling radio bearer (SRB) for a communication session with a second UE on a first frequency band based on a radio resource control (RRC) connection;

send, to the second UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band; and

configure the DRB on the second frequency band based on one or more parameters of a device-to-device discovery procedure with the second UE over the first frequency band.

2. The apparatus of claim 1 , wherein the first RRC message includes one or more parameters for establishing the DRB on the second frequency band, and

wherein to configure to configure the DRB on the second frequency band, the one or more processors, either alone or in combination, are configured to:

configure the DRB based on the one or more parameters in the first RRC message and the one or more parameters in the device-to-device discovery procedure with the second UE in the first frequency band.

3. The apparatus of claim 1 , wherein the one or more processors, either alone or in combination, are further configured to:

receive, from the second UE, a second RRC message on the SRB, the second RRC message that confirms the DRB has been successfully configured on the second frequency band; and

send first user data for the communication session to the second UE over the DRB on the second frequency band.

4. The apparatus of claim 3 , wherein the one or more processors, either alone or in combination, are further configured to:

send the first RRC message before the DRB is configured on the second frequency band; and

receive the second RRC message after the DRB is configured.

5. The apparatus of claim 3 , wherein the one or more processors, either alone or in combination, are further configured to:

send second user data for the communication session to the second UE over a DRB on the first frequency band.

6. The apparatus of claim 5 , wherein a quality of service (QoS) for the DRB on the first frequency band is different from a QoS for the DRB on the second frequency band.

7. The apparatus of claim 1 , wherein the one or more processors, either alone or in combination, are further configured to:

receive, from the second UE, a second RRC message on the SRB that indicates the DRB was unsuccessfully configured on the second frequency band; and

reconfigure the DRB on the second frequency band based on one or more different parameters from one or more parameters in the first RRC message.

8. The apparatus of claim 1 , wherein:

the first frequency band comprises an omni-directional frequency band and the second frequency band comprises a frequency band in which a directional beam is used, or

the first frequency band comprises the frequency band in which the directional beam is used and the second frequency band comprises the omni-directional frequency band.

9. The apparatus of claim 1 , further comprising:

one or more transceivers coupled to the one or more memories and the one or more processors, and

wherein the one or more processors, either alone or in combination, are configured to send, via the one or more transceivers, the first RRC message over the first frequency band as a groupcast or a broadcast.

10. The apparatus of claim 1 , wherein:

the first UE comprises a first vehicle and the second UE comprises a second vehicle, a roadside object, a roadsign, or a pedestrian, and

the first RRC message comprises an RRC sidelink reconfiguration message, and a second RRC message comprises an RRC sidelink reconfiguration complete message.

11. The apparatus of claim 1 , wherein the first UE and the second UE communicate over the first frequency band and the second frequency band using a PC5 device-to-device (D2D) interface.

12. The apparatus of claim 1 , wherein the one or more processors, either alone or in combination, are further configured to:

receive, over the SRB, capability information from the second UE that indicate an ability of the second UE to simultaneously communicate on the first frequency band and the second frequency band; or

send, over the SRB, capability information to the second UE that indicates an ability of the first UE to simultaneously communicate on the first frequency band and the second frequency band.

13. The apparatus of claim 1 , wherein the one or more processors, either alone or in combination, are further configured to:

determine to configure the DRB on the second frequency band based on the first UE having a data flow to transmit to the second UE that has a given QoS requirement and a configuration to use the second frequency band for communication sessions that have the given QoS requirement, and

wherein the configuration is preconfigured, received from a network entity, negotiated with the second UE, requested by the second UE, determined at the first UE, or any combination thereof.

14. The apparatus of claim 1 , wherein:

one or more parameters in the first RRC message include physical layer configuration parameters for radio frequency (RF) beam direction for the DRB on the second frequency band, sequence identifier, and resource usage and timing information for Layer 1 and Layer 2 procedures, and

the RF beam direction is based on geographic locations of the first UE and the second UE, or the RF beam direction is based on a limited angle beam sweep of predicted directions from the first UE to the second UE.

15. An apparatus for wireless communication at a first user equipment (UE), comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more processors, either alone or in combination, configured to:

establish a signaling radio bearer (SRB) for a communication session with a second UE on a first frequency band based on a radio resource control (RRC) connection;

send, to the second UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band, the first RRC message including one or more parameters for establishing the DRB on the second frequency band; and

configure the DRB on the second frequency band based on the one or more parameters in the first RRC message.

16. The apparatus of claim 15 , wherein the one or more processors to configure the DRB on the second frequency band are configured to:

configure the DRB based on the one or more parameters in the first RRC message and one or more parameters in a device-to-device discovery procedure with the second UE in the first frequency band.

17. The apparatus of claim 15 , wherein the one or more processors, either alone or in combination, are further configured to:

receive, from the second UE, a second RRC message on the SRB, wherein the second RRC message confirms that the DRB has been successfully configured on the second frequency band; and

send first user data for the communication session to the second UE over the DRB on the second frequency band.

18. The apparatus of claim 17 , wherein the one or more processors, either alone or in combination, are further configured to:

send the first RRC message before the DRB is configured on the second frequency band; and

receive the second RRC message after the DRB is configured.

19. The apparatus of claim 17 , wherein the one or more processors, either alone or in combination, are further configured to:

send second user data for the communication session to the second UE over a DRB on the first frequency band.

20. The apparatus of claim 19 , wherein a quality of service (QoS) for the DRB on the first frequency band is different from a QoS for the DRB on the second frequency band.

21. The apparatus of claim 15 , wherein the one or more processors, either alone or in combination, are further configured to:

receive, from the second UE, a second RRC message on the SRB that indicates the DRB was unsuccessfully configured on the second frequency band; and

reconfigure the DRB on the second frequency band based on one or more different parameters from the one or more parameters in the first RRC message.

22. The apparatus of claim 15 , wherein:

the first frequency band comprises an omni-directional frequency band and the second frequency band comprises a frequency band in which a directional beam is used, or

the first frequency band comprises the frequency band in which the directional beam is used and the second frequency band comprises the omni-directional frequency band.

23. The apparatus of claim 15 , further comprising:

one or more transceivers coupled to the one or more memories and the one or more processors, and wherein:

the first UE comprises a first vehicle and the second UE comprises a second vehicle, a roadside object, a roadsign, or a pedestrian, and

the first RRC message comprises an RRC sidelink reconfiguration message, and wherein a second RRC message comprises an RRC sidelink reconfiguration complete message.

24. The apparatus of claim 15 , wherein the one or more processors, either alone or in combination, are further configured to:

receive, over the SRB, capability information from the second UE that indicates an ability of the second UE to simultaneously communicate on the first frequency band and the second frequency band; or

send, over the SRB, capability information to the second UE that indicates an ability of the first UE to simultaneously communicate on the first frequency band and the second frequency band.

25. The apparatus of claim 15 , wherein the one or more processors, either alone or in combination, are further configured to:

wherein the configuration is preconfigured, received from a network entity, negotiated with the second UE, requested by the second UE, determined at the first UE, or any combination thereof.

26. The apparatus of claim 15 , wherein:

the one or more parameters in the first RRC message include physical layer configuration parameters for radio frequency (RF) beam direction for the DRB on the second frequency band, sequence identifier, and resource usage and timing information for Layer 1 and Layer 2 procedures, and

27. An apparatus for wireless communication at a second user equipment (UE), comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more processors, either alone or in combination, configured to:

establish a signaling radio bearer (SRB) for a communication session with a first UE on a first frequency band based on a radio resource control (RRC) connection;

receive, from the first UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band; and

configure the DRB on the second frequency band based on one or more parameters of a device-to-device discovery procedure with the first UE over the first frequency band.

28. The apparatus of claim 27 , wherein the first RRC message includes one or more parameters to establish the DRB on the second frequency band, and wherein to configure the DRB on the second frequency band, the one or more processors, either alone or in combination, are configured to:

configure the DRB based on the one or more parameters in the first RRC message and the one or more parameters in the device-to-device discovery procedure with the first UE in the first frequency band.

29. The apparatus of claim 27 , wherein the one or more processors, either alone or in combination, are further configured to:

send, to the first UE, a second RRC message on the SRB, the second RRC message confirming that the DRB has been successfully configured on the second frequency band; and

receive user data for the communication session from the first UE over the DRB on the second frequency band.

30. The apparatus of claim 27 , wherein the one or more processors, either alone or in combination, are further configured to:

send, to the first UE, a second RRC message on the SRB that indicates the DRB was unsuccessfully configured on the second frequency band; and

reconfigure the DRB on the second frequency band based on one or more different parameters from the one or more parameters in the first RRC message.

31. An apparatus for wireless communication at a second user equipment (UE), comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more processors, either alone or in combination, configured to:

establish a signaling radio bearer (SRB) for a communication session with a first UE on a first frequency band based on a radio resource control (RRC) connection;

receive, from the first UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band, the first RRC message including one or more parameters for establishing the DRB on the second frequency band; and

configure the DRB on the second frequency band based on the one or more parameters in the first RRC message.

32. The apparatus of claim 31 , wherein to configure the DRB on the second frequency band, the one or more processors, either alone or in combination, are configured to:

configure the DRB based on the one or more parameters in the first RRC message and one or more parameters in a device-to-device discovery procedure with the first UE in the first frequency band.

33. The apparatus of claim 31 , wherein the one or more processors, either alone or in combination, are further configured to:

send, to the first UE, a second RRC message on the SRB, wherein the second RRC message confirms that the DRB has been successfully configured on the second frequency band; and

receive user data for the communication session from the first UE over the DRB on the second frequency band.

34. The apparatus of claim 31 , wherein the one or more processors, either alone or in combination, are further configured to:

send, to the first UE, a second RRC message on the SRB that indicates the DRB was unsuccessfully configured on the second frequency band; and

reconfigure the DRB on the second frequency band based on one or more different parameters from the one or more parameters in the first RRC message.

35. A method for wireless communication at a second user equipment (UE), comprising:

establishing a signaling radio bearer (SRB) for a communication session with a first UE on a first frequency band based on a radio resource control (RRC) connection;

receiving, from the first UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band, the first RRC message including one or more parameters for establishing the DRB on the second frequency band; and

configuring the DRB on the second frequency band based on the one or more parameters in the first RRC message.

36. The method of claim 35 , the configuring the DRB on the second frequency band comprising:

configuring the DRB based on the one or more parameters in the first RRC message and one or more parameters in a device-to-device discovery procedure with the first UE in the first frequency band.

37. The method of claim 35 , further comprising:

sending, to the first UE, a second RRC message on the SRB, the second RRC message confirming that the DRB has been successfully configured on the second frequency band; and

receiving user data for the communication session from the first UE over the DRB on the second frequency band.

38. The method of claim 35 , further comprising:

sending, to the first UE, a second RRC message on the SRB indicating that the DRB was unsuccessfully configured on the second frequency band; and

reconfiguring the DRB on the second frequency band based on one or more different parameters from the one or more parameters in the first RRC message.

39. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable instructions comprising at least one instruction for causing a second user equipment (UE) to:

establish a signaling radio bearer (SRB) for a communication session with a first UE on a first frequency band based on a radio resource control (RRC) connection;

configure the DRB on the second frequency band based on the one or more parameters in the first RRC message.

40. A method for wireless communication at a first user equipment (UE), comprising:

establishing a signaling radio bearer (SRB) for a communication session with a second UE on a first frequency band based on a radio resource control (RRC) connection;

sending, to the second UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band; and

configuring the DRB on the second frequency band based on one or more parameters of a device-to-device discovery procedure with the second UE over the first frequency band.

41. The method of claim 40 , wherein the first RRC message includes one or more parameters for establishing the DRB on the second frequency band, and the configuring the DRB on the second frequency band comprises:

configuring the DRB based on the one or more parameters in the first RRC message and the one or more parameters in the device-to-device discovery procedure with the second UE in the first frequency band.

42. The method of claim 40 , further comprising:

receiving, from the second UE, a second RRC message on the SRB, the second RRC message confirming that the DRB has been successfully configured on the second frequency band; and

sending user data for the communication session to the second UE over the DRB on the second frequency band.

43. The method of claim 42 , further comprising:

sending the first RRC message before the DRB is configured on the second frequency band; and

receiving the second RRC message after the DRB is configured.

44. The method of claim 42 , further comprising:

sending user data for the communication session to the second UE over a DRB on the first frequency band.

45. The method of claim 44 , wherein a quality of service (QoS) for the DRB on the first frequency band is different from a QoS for the DRB on the second frequency band.

46. The method of claim 40 , further comprising:

receiving, from the second UE, a second RRC message on the SRB indicating that the DRB was unsuccessfully configured on the second frequency band; and

reconfiguring the DRB on the second frequency band based on one or more different parameters from one or more parameters in the first RRC message.

47. The method of claim 40 , further comprising:

determining to configure the DRB on the second frequency band based on the first UE having a data flow to transmit to the second UE having a given QoS requirement and a configuration to use the second frequency band for communication sessions having the given QoS requirement.

48. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable instructions comprising at least one instruction for causing a first user equipment (UE) to:

establish a signaling radio bearer (SRB) for a communication session with a second UE on a first frequency band based on a radio resource control (RRC) connection;

configure the DRB on the second frequency band based on the one or more parameters in the first RRC message.

49. A method for wireless communication at a first user equipment (UE), comprising:

establishing a signaling radio bearer (SRB) for a communication session with a second UE on a first frequency band based on a radio resource control (RRC) connection;

sending, to the second UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band, the first RRC message including one or more parameters for establishing the DRB on the second frequency band; and

configuring the DRB on the second frequency band based on the one or more parameters in the first RRC message.

50. The method of claim 49 , the configuring the DRB on the second frequency band comprising:

configuring the DRB based on the one or more parameters in the first RRC message and one or more parameters in a device-to-device discovery procedure with the second UE in the first frequency band.

51. The method of claim 49 , further comprising:

receiving, from the second UE, a second RRC message on the SRB, the second RRC message confirming that the DRB has been successfully configured on the second frequency band; and

sending user data for the communication session to the second UE over the DRB on the second frequency band.

52. The method of claim 49 , further comprising:

receiving, from the second UE, a second RRC message on the SRB indicating that the DRB was unsuccessfully configured on the second frequency band; and

reconfiguring the DRB on the second frequency band based on one or more different parameters from the one or more parameters in the first RRC message.

53. The method of claim 49 , further comprising:

54. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable instructions comprising at least one instruction for causing a first user equipment (UE) to:

establish a signaling radio bearer (SRB) for a communication session with a second UE on a first frequency band based on a radio resource control (RRC) connection;

send, to the second UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band; and

configure the DRB on the second frequency band based on one or more parameters of a device-to-device discovery procedure with the second UE over the first frequency band.

55. A method for wireless communication at a second user equipment (UE), comprising:

establishing a signaling radio bearer (SRB) for a communication session with a first UE on a first frequency band based on a radio resource control (RRC) connection;

receiving, from the first UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band; and

configuring the DRB on the second frequency band based on one or more parameters of a device-to-device discovery procedure with the first UE over the first frequency band.

56. The method of claim 55 , wherein the first RRC message includes one or more parameters for establishing the DRB on the second frequency band, and wherein the configuring the DRB on the second frequency band comprises:

configuring the DRB based on the one or more parameters in the first RRC message and the one or more parameters in the device-to-device discovery procedure with the first UE in the first frequency band.

57. The method of claim 55 , further comprising:

sending, to the first UE, a second RRC message on the SRB, the second RRC message confirming that the DRB has been successfully configured on the second frequency band; and

receiving user data for the communication session from the first UE over the DRB on the second frequency band.

58. The method of claim 55 , further comprising:

sending, to the first UE, a second RRC message on the SRB indicating that the DRB was unsuccessfully configured on the second frequency band; and

reconfiguring the DRB on the second frequency band based on one or more different parameters from the one or more parameters in the first RRC message.

59. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable instructions comprising at least one instruction for causing a second user equipment (UE) to:

establish a signaling radio bearer (SRB) for a communication session with a first UE on a first frequency band based on a radio resource control (RRC) connection;

receive, from the first UE over the SRB on the first frequency band, a first RRC message to establish a data radio bearer (DRB) for the communication session on a second frequency band; and

configure the DRB on the second frequency band based on one or more parameters of a device-to-device discovery procedure with the first UE over the first frequency band.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 26, 2022

From: VARGAS, JOSE EDSON; WU, ZHIBIN; GULATI, KAPIL; LI, JUNYI; BAGHEL, SUDHIR KUMAR

To: QUALCOMM INCORPORATED

Reel/Frame 061208/0832 →

Continuity (3)

Continuation 16824649 · Mar 19, 2020

Provisional Application 62830226 · Apr 5, 2019

Related Publication 20230017902A1 · Jan 19, 2023

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