US-12621778-B2 - Power control for carrier aggregation and dual connectivity operation

US12621778B2US 12621778 B2US12621778 B2US 12621778B2US-12621778-B2

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information associated with identifying a first transmit power for a first carrier in a band and a second transmit power for a second carrier in the band, wherein the first transmit power and the second transmit power exceed a per-carrier group power threshold. The UE may transmit at least one of a first communication using a first scaled transmit power or a second communication using a second scaled transmit power, wherein at least one of the first transmit power or the second transmit power is scaled to form the first scaled transmit power or the second scaled transmit power in connection with the per-carrier group power threshold. Numerous other aspects are described.

Inventors

Kazuki Takeda
Wanshi Chen
Peter Gaal
Juan Montojo
Gokul SRIDHARAN
Gene Fong
Timo Ville Vintola

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260505
Application Date: 20221108

Claims (20)

1 . A user equipment (UE) for wireless communication, comprising: memory; and one or more processors, coupled to the memory, configured to: receive information associated with identifying a first transmit power for a first carrier in a band and a second transmit power for a second carrier in the band, wherein the first transmit power and the second transmit power exceed a per-carrier group power threshold; scale at least one of the first transmit power or the second transmit power: concurrently, based at least in part on a per-frequency range power threshold and the per-carrier group power threshold, sequentially, based at least in part on the per-frequency range power threshold and then based at least in part on the per-carrier group power threshold, or sequentially, base at least in part on the per-carrier group power threshold and then based at least in part on the per-frequency range power threshold; and transmit at least one of a first communication using the first scaled transmit power or a second communication using the second scaled transmit power.
2 . The UE of claim 1 , wherein the per-carrier group threshold is associated with at least one of: a configured group of carriers, a configured frequency band, a configured group of frequency bands, a power amplifier, or a transmit chain.
3 . The UE of claim 1 , wherein the one or more processors, to further scale the at least one of the first transmit power or the second transmit power, are configured to: scale the at least one of the first transmit power or the second transmit power based at least in part on a priority order.
4 . The UE of claim 1 , wherein the one or more processors, to further scale the at least one of the first transmit power or the second transmit power, are configured to: scale the at least one of the first transmit power or the second transmit power based at least in part on a configured power offset.
5 . The UE of claim 1 , wherein a master cell group is associated with a first power control configuration and a secondary cell group is associated with a second power control configuration, and wherein at least one of the first scaled transmit power or the second scaled transmit power is based at least in part on the first power control configuration or the second power control configuration.
6 . The UE of claim 5 , wherein the second power control configuration is based at least in part on the first power control configuration.
7 . The UE of claim 5 , wherein at least one of the first power control configuration or the second power control configuration is based at least in part on a timing criterion.
8 . The UE of claim 1 , wherein the first scaled transmit power or the second scaled transmit power is based at least in part on an inter-cell group power sharing threshold.
9 . A network node for wireless communication, comprising: a memory; and one or more processors, coupled to the memory, configured to: transmit information associated with identifying a first transmit power for a first carrier in a band and a second transmit power for a second carrier in the band, wherein a sum of the first transmit power and the second transmit power exceed a per-carrier group power threshold; and receive at least one of a first communication using a first scaled transmit power or a second communication using a second scaled transmit power, wherein the at least one of the first transmit power or the second transmit power is scaled: concurrently, based at least in part on a per-frequency range power threshold and the per-carrier group power threshold, sequentially, based at least in part on the per-frequency range power threshold and then based at least in part on the per-carrier group power threshold, or sequentially, based at least in part on the per-carrier group power threshold and then based at least in part on the per-frequency range power threshold.
10 . The network node of claim 9 , wherein the per-carrier group threshold is associated with at least one of: a configured group of carriers, a configured frequency band, a configured group of frequency bands, a power amplifier, or a transmit chain.
11 . The network node of claim 9 , wherein the at least one of the first transmit power or the second transmit power is further scaled based at least in part on a priority order.
12 . The network node of claim 9 , wherein the at least one of the first transmit power or the second transmit power is further scaled based at least in part on a configured power offset.
13 . The network node of claim 9 , wherein a master cell group is associated with a first power control configuration and a secondary cell group is associated with a second power control configuration, and wherein at least one of the first scaled transmit power or the second scaled transmit power is based at least in part on the first power control configuration or the second power control configuration.
14 . The network node of claim 13 , wherein the second power control configuration is based at least in part on the first power control configuration.
15 . The network node of claim 13 , wherein at least one of the first power control configuration or the second power control configuration is based at least in part on a timing criterion.
16 . The network node of claim 9 , wherein the first scaled transmit power or the second scaled transmit power is based at least in part on an inter-cell group power sharing threshold.
17 . A method of wireless communication performed by an apparatus of a user equipment (UE), comprising: receiving information associated with identifying a first transmit power for a first carrier in a band and a second transmit power for a second carrier in the band, wherein the first transmit power and the second transmit power exceed a per-carrier group power threshold; scaling at least one of the first transmit power or the second transmit power: concurrently, based at least in part on a per-frequency range power threshold and the per-carrier group power threshold, sequentially, based at least in part on the per-frequency range power threshold and then based at least in part on the per-carrier group power threshold, or sequentially, base at least in part on the per-carrier group power threshold and then based at least in part on the per-frequency range power threshold; and transmitting at least one of a first communication using the first scaled transmit power or a second communication using the second scaled transmit power.
18 . The method of claim 17 , wherein the per-carrier group threshold is associated with at least one of: a configured group of carriers, a configured frequency band, a configured group of frequency bands, a power amplifier, or a transmit chain.
19 . The method of claim 17 , wherein scaling the at least one of the first transmit power or the second transmit power further comprises: scaling the at least one of the first transmit power or the second transmit power based at least in part on a priority order.
20 . The method of claim 17 , wherein scaling the at least one of the first transmit power or the second transmit power further comprises: scaling the at least one of the first transmit power or the second transmit power based at least in part on a configured power offset.

Description

FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for power control for carrier aggregation and dual connectivity operation. BACKGROUND Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). A wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL”) refers to a communication link from the network node to the UE, and “uplink” (or “UL”) refers to a communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples). The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include receiving information associated with identifying a first transmit power for a first carrier in a band and a second transmit power for a second carrier in the band, wherein the first transmit power and the second transmit power exceed a per-carrier group power threshold. The method may include transmitting at least one of a first communication using a first scaled transmit power or a second communication using a second scaled transmit power, where at least one of the first transmit power or the second transmit power is scaled to form the first scaled transmit power or the second scaled transmit power in connection with the per-carrier group power threshold. Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include transmitting information associated with identifying a first transmit power for a first carrier in a band and a second transmit power for a second carrier in the band, wherein a sum of the first transmit power and the second transmit power exceed a per-carrier group power threshold. The method may include receiving at least one of a first communication using a first scaled transmit power or a second communication using a second scaled transmit power, where at least one of the first transmit power or the second transmit power is scaled to the first scaled transmit power or the second scaled transmit power, respectively, in connection with the per-carrier group power threshold. Some aspects described herein relate to a UE for wireless communication. The UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive information associated with identifying a first transmit power for a first carrier in a band and a second transmit power for a second carrier in the band, wherein the first transmit power and