Granted Patent B2

US 12,445,830 · App. 16/914,014 · Granted Oct 14, 2025

Inventors: Joseph Binamira Soriaga (San Diego, CA); Peter Gaal (San Diego, CA); Alexandros Manolakos (San Diego, CA); Peter Pui Lok Ang (San Diego, CA)

Assignee: QUALCOMM Incorporated

H04W8/24H04B7/0626H04L1/0026H04L5/0051H04L5/0092H04L25/0226H04W24/10H04W72/23

Abstract

Claims (52)

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

transmitting capability information comprising a parameter value, wherein the parameter value is a single bit that indicates a capability of the UE to read, and subsequently use, a radio resource control parameter from an access network entity, the radio resource control parameter identifying a first maximum number of layers that the access network entity will use to transmit to the UE, on a downlink, in at least one bandwidth part of a radio frequency (RF) spectrum band, wherein the first maximum number of layers comprises a maximum number of data streams for downlink transmissions, wherein the capability information comprises the parameter value if the UE has the capability to read, and subsequently use, the radio resource control parameter or lacks the parameter value if the UE lacks the capability to read, and subsequently use, the radio resource control parameter;

receiving, from the access network entity in response to the transmitted capability information comprising the parameter value that indicates the capability of the UE to read, and subsequently use, the radio resource control parameter, the radio resource control parameter identifying the first maximum number of layers that the access network entity will use to transmit to the UE;

configuring, based at least in part on receiving the radio resource control parameter from the access network entity that identifies the first maximum number of layers, a size of a soft buffer at the UE; and

receiving, according to the identified first maximum number of layers, signals from the access network entity using the at least one bandwidth part.

2. The method of claim 1 , further comprising:

selecting, by the UE, a channel state information (CSI) report format based at least in part on the identified first maximum number of layers in the at least one bandwidth part; and

transmitting a CSI report to the access network entity according to the selected CSI report format.

3. The method of claim 1 , further comprising:

determining, by the UE, a downlink control information format based at least in part on the identified first maximum number of layers in the at least one bandwidth part; and

receiving, from the access network entity, at least one downlink control information signal according to the determined downlink control information format.

4. The method of claim 1 , wherein transmitting the capability information comprises:

transmitting, to the access network entity, a UE radio access capability parameter indicating a capability of the UE to read, and subsequently use, the radio resource control parameter that identifies the first maximum number of layers in the at least one bandwidth part.

5. The method of claim 1 , wherein receiving the signals from the access network entity according to the identified first maximum number of layers in the at least one bandwidth part comprises:

receiving the signals from the access network entity using a number of layers equal to or less than the identified first maximum number of layers in the at least one bandwidth part.

6. A method for wireless communication at an access network entity, comprising:

receiving, from a user equipment (UE), capability information comprising a parameter value, wherein the parameter value indicates a capability of the UE to read, and subsequently use, a radio resource control parameter from the access network entity, the radio resource control parameter identifying a first maximum number of layers that the access network entity will use to transmit to the UE, on a downlink, in at least one bandwidth part of a radio frequency (RF) spectrum band, wherein the first maximum number of layers indicates a maximum number of data streams for downlink transmissions;

transmitting, to the UE in response to the received capability information comprising the parameter value that indicates the capability of the UE to read, and subsequently use, the radio resource control parameter, the radio resource control parameter identifying the first maximum number of layers that the access network entity will use to transmit to the UE; and

transmitting, according to the identified first maximum number of layers, signals to the UE using the at least one bandwidth part, wherein the first maximum number of layers is associated with a soft buffer size at the UE.

7. The method of claim 6 , further comprising:

determining a downlink control information format for the UE based at least in part on the identified first maximum number of layers in the at least one bandwidth part; and

transmitting, to the UE, at least one downlink control information signal according to the determined downlink control information format.

8. The method of claim 6 , wherein receiving the capability information comprises:

receiving, from the UE, a UE radio access capability parameter indicating a capability of the UE to read, and subsequently use, the radio resource control parameter that identifies the first maximum number of layers in the at least one bandwidth part.

9. The method of claim 6 , wherein transmitting the signals to the UE according to the identified first maximum number of layers in the at least one bandwidth part comprises:

transmitting the signals to the UE using a number of layers equal to or less than the identified first maximum number of layers in the at least one bandwidth part.

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

one or more processors, one or more memories in electronic communication with the one or more processors; and

instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to:

transmit capability information comprising a parameter value, wherein the parameter value indicates a capability of the UE to read, and subsequently use, a radio resource control parameter from an access network entity, the radio resource control parameter identifying a first maximum number of layers that the access network entity will use to transmit to the UE, on a downlink, in at least one bandwidth part of a radio frequency (RF) spectrum band, wherein the first maximum number of layers indicates a maximum number of data streams for downlink transmissions;

receive, from the access network entity in response to the transmitted capability information comprising the parameter value that indicates the capability of the UE to read, and subsequently use, the radio resource control parameter, the radio resource control parameter identifying the first maximum number of layers that the access network entity will use to transmit to the UE;

configure, based at least in part on receiving the radio resource control parameter from the access network entity that identifies the first maximum number of layers, a size of a soft buffer at the UE; and

receive, according to the identified first maximum number of layers, signals from the access network entity using the at least one bandwidth part.

11. The apparatus of claim 10 , wherein the instructions are further executable by the one or more processors to cause the apparatus to:

select, by the UE, a channel state information (CSI) report format based at least in part on the identified first maximum number of layers in the at least one bandwidth part; and

transmit a CSI report to the access network entity according to the selected CSI report format.

12. The apparatus of claim 10 , wherein the instructions are further executable by the one or more processors to cause the apparatus to:

determine, by the UE, a downlink control information format based at least in part on the identified first maximum number of layers in the at least one bandwidth part; and

receive, from the access network entity, at least one downlink control information signal according to the determined downlink control information format.

13. The apparatus of claim 10 , wherein the instructions to transmit the capability information are executable by the one or more processors to cause the apparatus to:

transmit, to the access network entity, a UE radio access capability parameter indicating a capability of the UE to read, and subsequently use, the radio resource control parameter that identifies the first maximum number of layers in the at least one bandwidth part.

14. An apparatus for wireless communication at an access network entity, comprising:

one or more processors, one or more memories in electronic communication with the one or more processors; and

instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to:

receive, from a user equipment (UE), capability information comprising a parameter value, wherein the parameter value indicates a capability of the UE to read, and subsequently use, a radio resource control parameter from the access network entity, the radio resource control parameter identifying a first maximum number of layers that the access network entity will use to transmit to the UE, on a downlink, in at least one bandwidth part of a radio frequency (RF) spectrum band, wherein the first maximum number of layers indicates a maximum number of data streams for downlink transmissions;

transmit, to the UE in response to the received capability information comprising the parameter value that indicates the UE to read, and subsequently use, the radio resource control parameter, the radio resource control parameter identifying the first maximum number of layers that the access network entity will use to transmit to the UE; and

transmit, according to the identified first maximum number of layers, signals to the UE using the at least one bandwidth part, wherein the first maximum number of layers is associated with a soft buffer size at the UE.

15. The apparatus of claim 14 , wherein the instructions are further executable by the one or more processors to cause the apparatus to:

determine a downlink control information format for the UE based at least in part on the identified first maximum number of layers in the at least one bandwidth part; and

transmit, to the UE, at least one downlink control information signal according to the determined downlink control information format.

16. The apparatus of claim 14 , wherein the instructions to receive the capability information are executable by the one or more processors to cause the apparatus to:

receive, from the UE, a UE radio access capability parameter indicating a capability of the UE to read, and subsequently use, the radio resource control parameter that identifies the first maximum number of layers in the at least one bandwidth part.

Assignments (3)

Continuity (3)

References Cited (53)