IP Library Granted Patent US 12695587
Granted Patent B2
US 12695587 · App. 18/477,279 · Granted Jul 28, 2026

Power boosting of a channel state information reference signal in a sub-band full duplex set of symbols

Inventors: Abdelrahman Mohamed Ahmed Mohamed Ibrahim (San Diego, CA); Muhammad Sayed Khairy Abdelghaffar (San Jose, CA); Ahmed Attia Abotabl (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04L5/14H04L5/0057
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Quick Facts
Patent No.
US 12695587
App. No.
18/477,279
Granted
Jul 28, 2026
Kind
B2
Abstract

Various aspects of the present disclosure generally relate to wireless communication. More particularly, various aspects relate generally to power boosting a channel state information reference signal (CSI-RS) in a CSI-RS resource occasion occurring in a sub-band full duplex (SBFD) set of symbols and/or in a CSI-RS resource occasion that overlaps with an uplink sub-band and/or a guard band of the SBFD set of symbols. In some aspects, a network node may configure a UE with a CSI-RS resource associated with SBFD sets of symbols and non-SBFD sets of symbols. The network node may transmit, and the UE may receive, in an instance of the CSI-RS resource that occurs in an SBFD set of symbols, a CSI-RS. The CSI-RS may be associated with a power-boosted energy per resource element (EPRE) as compared to an EPRE of a CSI-RS transmitted in a CSI-RS occasion occurring in a non-SBFD set of symbols.

Claims (76)

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

one or more memories storing processor-executable code; and

one or more processors coupled with the one or more memories, at least one processor of the one or more processors configured to cause the UE to:

receive configuration information to configure a channel state information reference signal (CSI-RS) resource that is associated with sub-band full duplex (SBFD) sets of symbols and non-SBFD sets of symbols;

receive, in an instance of the CSI-RS resource that occurs in an SBFD set of symbols, a CSI-RS that is associated with a power-boosted energy per resource element (EPRE) based at least in part on the configuration information, wherein a boosting factor associated with the power-boosted EPRE is related to a bandwidth of the instance of the CSI-RS resource that overlaps with at least one of an uplink sub-band of the SBFD set of symbols or a guard band of the SBFD set of symbols; and

compute channel state information using the CSI-RS by identifying, based at least in part on the configuration information, the power-boosted EPRE.

2 . The apparatus of claim 1 , wherein the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled.

3 . The apparatus of claim 1 , wherein the configuration information includes an indication of a boosting factor associated with the power-boosted EPRE.

4 . The apparatus of claim 1 , wherein the CSI-RS resource is associated with one of a periodic CSI-RS resource or a semi-persistent CSI-RS resource, and

wherein at least one of:

the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled, or

at least one processor of the one or more processors is configured to receive a medium access control (MAC) control element (MAC-CE) activating the CSI-RS EPRE power boosting.

5 . The apparatus of claim 1 , wherein the CSI-RS resource is associated with an aperiodic CSI-RS resource, and

wherein at least one of:

the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled, or

at least one processor of the one or more processors is configured to receive a downlink control information communication activating the CSI-RS EPRE power boosting.

6 . The apparatus of claim 1 , wherein the configuration information indicates a power control offset parameter associated with identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and the non-SBFD sets of symbols, and

wherein at least one processor of the one or more processors is configured to receive, in the SBFD set of symbols, a PDSCH communication that is associated with a power-boosted EPRE based at least in part on the power control offset parameter.

7 . The apparatus of claim 1 , wherein the configuration information indicates a power control offset parameter associated with identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and the non-SBFD sets of symbols, and

wherein the at least one processor of the one or more processors is configured to:

adjust the power control offset parameter to account for the power-boosted EPRE associated with the CSI-RS, resulting in an adjusted power control offset parameter; and

receive, in the SBFD set of symbols, a PDSCH communication based at least in part on the adjusted power control offset parameter.

8 . The apparatus of claim 1 , wherein the configuration information indicates a first power control offset parameter associated with identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and a second power control offset parameter associated with identifying the EPRE of the PDSCH communications in the non-SBFD sets of symbols, and

wherein the at least one processor of the one or more processors is configured to receive, in the SBFD set of symbols, a PDSCH communication based at least in part on the first power control offset parameter.

9 . An apparatus for wireless communication at a network node, comprising:

one or more memories storing processor-executable code; and

one or more processors coupled with the one or more memories, at least one processor of the one or more processors configured to cause the network node to:

transmit, to a user equipment (UE), configuration information to configure a channel state information reference signal (CSI-RS) resource that is associated with sub-band full duplex (SBFD) sets of symbols and non-SBFD sets of symbols;

identify a power-boosted energy per resource element (EPRE) associated with an instance of the CSI-RS resource that occurs in an SBFD set of symbols, wherein a boosting factor associated with the power-boosted EPRE is related to a bandwidth of the instance of the CSI-RS resource that overlaps with at least one of an uplink sub-band of the SBFD set of symbols or a guard band of the SBFD set of symbols; and

transmit, to the UE in the instance of the CSI-RS resource that occurs in the SBFD set of symbols, a CSI-RS that is associated with the power-boosted EPRE.

10 . The apparatus of claim 9 , wherein the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled.

11 . The apparatus of claim 9 , wherein the configuration information includes an indication of a boosting factor associated with the power-boosted EPRE.

12 . The apparatus of claim 9 , wherein the CSI-RS resource is associated with one of a periodic CSI-RS resource or a semi-persistent CSI-RS resource, and

wherein at least one of:

the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled, or

the at least one processor of the one or more processors is configured to transmit, to the UE, a medium access control (MAC) control element (MAC-CE) activating the CSI-RS EPRE power boosting.

13 . The apparatus of claim 9 , wherein the CSI-RS resource is associated with an aperiodic CSI-RS resource, and

wherein at least one of:

the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled, or

the at least one processor of the one or more processors is configured to transmit, to the UE, a downlink control information communication activating the CSI-RS EPRE power boosting.

14 . The apparatus of claim 9 , wherein the configuration information indicates a power control offset parameter associated with the UE identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and the non-SBFD sets of symbols, and

wherein the at least one processor of the one or more processors is configured to transmit, to the UE in the SBFD set of symbols, a PDSCH communication that is associated with a power-boosted EPRE based at least in part on the power control offset parameter.

15 . The apparatus of claim 9 , wherein the configuration information indicates a power control offset parameter associated with the UE identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and the non-SBFD sets of symbols, and

wherein the at least one processor of the one or more processors is configured to transmit, to the UE in the SBFD set of symbols, a PDSCH communication based at least in part on an adjusted power control offset parameter that accounts for the power-boosted EPRE associated with the CSI-RS.

16 . The apparatus of claim 9 , wherein the configuration information indicates a first power control offset parameter associated with identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and a second power control offset parameter associated with identifying the EPRE of the PDSCH communications in the non-SBFD sets of symbols, and

wherein at least one processor of the one or more processors is configured to transmit, to the UE in the SBFD set of symbols, a PDSCH communication based at least in part on the first power control offset parameter.

17 . A method of wireless communication performed at a user equipment (UE), comprising:

receiving configuration information to configure a channel state information reference signal (CSI-RS) resource that is associated with sub-band full duplex (SBFD) sets of symbols and non-SBFD sets of symbols;

receiving, in an instance of the CSI-RS resource that occurs in an SBFD set of symbols, a CSI-RS that is associated with a power-boosted energy per resource element (EPRE) based at least in part on the configuration information, wherein a boosting factor associated with the power-boosted EPRE is related to a bandwidth of the instance of the CSI-RS resource that overlaps with at least one of an uplink sub-band of the SBFD set of symbols or a guard band of the SBFD set of symbols; and

computing channel state information using the CSI-RS by identifying, based at least in part on the configuration information, the power-boosted EPRE.

18 . The method of claim 17 , wherein the configuration information includes an indication of a boosting factor associated with the power-boosted EPRE.

19 . The method of claim 17 , wherein the CSI-RS resource is associated with an aperiodic CSI-RS resource, and

wherein at least one of:

the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled, or

the method further comprises receiving a downlink control information communication activating the CSI-RS EPRE power boosting.

20 . The method of claim 17 , wherein the configuration information indicates a power control offset parameter associated with identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and the non-SBFD sets of symbols, and

wherein the method further comprises:

adjusting the power control offset parameter to account for the power-boosted EPRE associated with the CSI-RS, resulting in an adjusted power control offset parameter; and

receiving, in the SBFD set of symbols, a PDSCH communication based at least in part on the adjusted power control offset parameter.

21 . The method of claim 17 , wherein the configuration information indicates a first power control offset parameter associated with identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and a second power control offset parameter associated with identifying the EPRE of the PDSCH communications in the non-SBFD sets of symbols, and

wherein the method further comprises receiving, in the SBFD set of symbols, a PDSCH communication based at least in part on the first power control offset parameter.

22 . A method of wireless communication performed at a network node, comprising:

transmitting, to a user equipment (UE), configuration information to configure a channel state information reference signal (CSI-RS) resource that is associated with sub-band full duplex (SBFD) sets of symbols and non-SBFD sets of symbols;

identifying a power-boosted energy per resource element (EPRE) associated with an instance of the CSI-RS resource that occurs in an SBFD set of symbols, wherein a boosting factor associated with the power-boosted EPRE is related to a bandwidth of the instance of the CSI-RS resource that overlaps with at least one of an uplink sub-band of the SBFD set of symbols or a guard band of the SBFD set of symbols; and

transmitting, to the UE in the instance of the CSI-RS resource that occurs in the SBFD set of symbols, a CSI-RS that is associated with the power-boosted EPRE.

23 . The method of claim 22 , wherein the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled.

24 . The method of claim 22 , wherein the CSI-RS resource is associated with one of a periodic CSI-RS resource or a semi-persistent CSI-RS resource, and

wherein at least one of:

the configuration information includes an indication that CSI-RS EPRE power boosting is to be enabled, or

the method further comprises transmitting, to the UE, a medium access control (MAC) control element (MAC-CE) activating the CSI-RS EPRE power boosting.

25 . The method of claim 22 , wherein the configuration information indicates a power control offset parameter associated with the UE identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and the non-SBFD sets of symbols, and

wherein the method further comprises transmitting, to the UE in the SBFD set of symbols, a PDSCH communication that is associated with a power-boosted EPRE based at least in part on the power control offset parameter.

26 . The method of claim 22 , wherein the configuration information indicates a power control offset parameter associated with the UE identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and the non-SBFD sets of symbols, and

wherein the method further comprises transmitting, to the UE in the SBFD set of symbols, a PDSCH communication based at least in part on an adjusted power control offset parameter that accounts for the power-boosted EPRE associated with the CSI-RS.

27 . The method of claim 22 , wherein the configuration information indicates a first power control offset parameter associated with identifying an EPRE of physical downlink shared channel (PDSCH) communications in the SBFD sets of symbols and a second power control offset parameter associated with identifying the EPRE of the PDSCH communications in the non-SBFD sets of symbols, and

wherein the method further comprises transmitting, to the UE in the SBFD set of symbols, a PDSCH communication based at least in part on the first power control offset parameter.