CN-122029899-A - Power consumption savings based on channel delay spread reporting

Abstract

Methods, systems, and devices for wireless communications are described. The network entity may indicate (e.g., in a downlink control message) to a User Equipment (UE) the ability of the network entity to disable the power amplifier for downlink transmissions. In response to the capability indication, the UE may estimate a delay spread and antenna array loss threshold for the downlink signal and report the delay spread and antenna array loss threshold to the network entity. Based on the reported delay spread and antenna array loss threshold, the network entity may determine a number of power amplifiers that may be disabled for downlink transmissions without reducing received signal power at the UE below a minimum threshold. The network entity disabled power amplifier may be a power amplifier having an input power less than a threshold (e.g., one threshold less than the highest input power).

Inventors

• MOSES ALAN
• R. Shepard
• Y. Stan
• A. Regev

Assignees

• 高通股份有限公司

Dates

Publication Date

20260512

Application Date

20241014

Priority Date

20231026

Claims (20)

1. 1. A User Equipment (UE), the UE comprising: One or more of the memories may be provided, the one or more memories store processor executable code; and One or more processors coupled with the one or more memories and operable, individually or collectively, to execute the code to cause the UE to: Receiving control signaling from a network entity, the control signaling indicating the ability of the network entity to disable one or more of a plurality of power amplifiers of the network entity; Receiving a downlink signal from the network entity, the downlink signal being transmitted using at least a subset of the plurality of power amplifiers, the downlink signal being associated with a modulation and coding scheme, and A report is sent to the network entity based at least in part on the control signaling, the report indicating an antenna array loss threshold and a channel delay spread measurement, wherein the antenna array loss threshold and the channel delay spread measurement are determined based at least in part on the downlink signal and the modulation and coding scheme.
2. 2. The UE of claim 1, wherein the downlink signal is a first downlink signal, and the one or more processors are further operable, individually or collectively, to execute the code to cause the UE to: A second downlink signal associated with the modulation and coding scheme is received from the network entity after transmission of the report, wherein a received signal power of the second downlink signal is based at least in part on the report.
3. 3. The UE of claim 2, wherein the one or more processors are further operable individually or collectively to execute the code to cause the UE to: Transmitting a second report to the network entity based at least in part on the control signaling, the second report indicating a second antenna array loss threshold and a second channel delay spread measurement, wherein the report comprises a first report, wherein the channel delay spread measurement comprises a first channel delay spread measurement, wherein the antenna array loss threshold comprises a first antenna array loss threshold, and wherein the second antenna array loss threshold and the second channel delay spread measurement are determined based at least in part on the second downlink signal.
4. 4. The UE of claim 1, wherein the antenna array loss threshold is determined based at least in part on a margin between a measured signal-to-noise ratio and a threshold signal-to-noise ratio of the downlink signal.
5. 5. The UE of claim 1, wherein to receive the control signaling, the one or more processors are operable individually or collectively to execute the code to cause the UE to: An indication of the modulation and coding scheme is received.
6. 6. The UE of claim 5, wherein the one or more processors are further operable individually or collectively to execute the code to cause the UE to: Receiving a set of channel state information reference signals from the network entity, and A channel state information report is sent to the network entity, the channel state information report based at least in part on the set of channel state information reference signals, wherein the modulation and coding scheme is based at least in part on the channel state information report.
7. 7. The UE of claim 1, wherein to send the report, the one or more processors are operable individually or collectively to execute the code to cause the UE to: the report is sent via an uplink control channel transmission.
8. 8. The UE of claim 1, wherein the downlink signal is one of a downlink control channel transmission or a downlink shared channel transmission.
9. 9. A network entity, the network entity comprising: One or more of the memories may be provided, the one or more memories store processor executable code; and One or more processors coupled with the one or more memories and operable, individually or collectively, to execute the code to cause the network entity to: transmitting control signaling to a User Equipment (UE), the control signaling indicating a capability of the network entity to disable one or more of a plurality of power amplifiers of the network entity; transmitting a first downlink signal to the UE using a modulation and coding scheme and a first number of the plurality of power amplifiers; Receiving a report from the UE based at least in part on the control signaling, the report indicating an antenna array loss threshold and a channel delay spread measurement, wherein the antenna array loss threshold and the channel delay spread measurement are based at least in part on the first downlink signal, and A second downlink signal is transmitted to the UE using the modulation and coding scheme and a second number of the plurality of power amplifiers, wherein the second number is different from the first number, and wherein the second number is based at least in part on the report.
10. 10. The network entity of claim 9, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the network entity to: A third number of power amplifiers of the plurality of power amplifiers to disable for the second downlink signal is determined based at least in part on the antenna array loss threshold and the channel delay spread measurement, wherein a difference between the first number and the second number is the third number.
11. 11. The network entity of claim 10, wherein to transmit the second downlink signal, the one or more processors are operable individually or collectively to execute the code to cause the network entity to: A set of power amplifiers of the plurality of power amplifiers having respective input powers less than a threshold is disabled for the second downlink signal, a number of power amplifiers in the set of power amplifiers being the third number.
12. 12. The network entity of claim 10, wherein to determine the third number, the one or more processors are operable individually or collectively to execute the code to cause the network entity to: identifying a look-up table based at least in part on the channel delay spread measurement, and The third number is determined based at least in part on the look-up table and the antenna array loss threshold.
13. 13. The network entity of claim 9, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the network entity to: A second report is received from the UE based at least in part on the control signaling, the second report indicating a second antenna array loss threshold and a second channel delay spread measurement, wherein the channel delay spread measurement comprises a first channel delay spread measurement, wherein the antenna array loss threshold comprises a first antenna array loss threshold, and wherein the second antenna array loss threshold and the second channel delay spread measurement are based at least in part on the second downlink signal.
14. 14. The network entity of claim 9, wherein the antenna array loss threshold is based at least in part on a margin between a measured signal-to-noise ratio and a threshold signal-to-noise ratio of the first downlink signal at the UE.
15. 15. The network entity of claim 9, wherein to send the control signaling, the one or more processors are operable individually or collectively to execute the code to cause the network entity to: An indication of the modulation and coding scheme is sent.
16. 16. The network entity of claim 15, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the network entity to: Transmitting a set of channel state information reference signals, and A channel state information report is received from the UE, the channel state information report based at least in part on the set of channel state information reference signals, wherein the modulation and coding scheme is based at least in part on the channel state information report.
17. 17. The network entity of claim 9, wherein to receive the report, the one or more processors are operable individually or collectively to execute the code to cause the network entity to: the report is received via an uplink control channel transmission.
18. 18. The network entity of claim 9, wherein the first downlink signal is one of a downlink control channel transmission or a downlink shared channel transmission.
19. 19. A method for wireless communication at a User Equipment (UE), the method comprising: Receiving control signaling from a network entity, the control signaling indicating the ability of the network entity to disable one or more of a plurality of power amplifiers of the network entity; Receiving a downlink signal from the network entity, the downlink signal being transmitted using at least a subset of the plurality of power amplifiers, the downlink signal being associated with a modulation and coding scheme, and A report is sent to the network entity based at least in part on the control signaling, the report indicating an antenna array loss threshold and a channel delay spread measurement, wherein the antenna array loss threshold and the channel delay spread measurement are determined based at least in part on the downlink signal and the modulation and coding scheme.
20. 20. The method of claim 19, wherein the downlink signal is a first downlink signal, the method further comprising: A second downlink signal associated with the modulation and coding scheme is received from the network entity after transmission of the report, wherein a received signal power of the second downlink signal is based at least in part on the report.

Description

Power consumption savings based on channel delay spread reporting Cross reference This patent application claims priority from U.S. patent application Ser. No. 18/495,347, entitled "POWER CONSUMPTION SAVINGS BASED ON CHANNEL DELAY SPREAD report (Power saving based channel delay spread report)" filed by MOSES et al at 10/26 of 2023, which is assigned to the assignee of the present application and expressly incorporated herein by reference in its entirety. Technical Field The following relates to wireless communications, including power consumption savings based on channel delay spread reporting. Background Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be able to support communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems, such as Long Term Evolution (LTE) systems, LTE-advanced (LTE-a) systems, or LTE-a Pro systems, and fifth generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems may employ techniques such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal FDMA (OFDMA), or discrete fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communication system may include one or more base stations, each supporting wireless communication for communication devices, which may be referred to as User Equipment (UEs). Disclosure of Invention The described technology relates to improved methods, systems, devices, and apparatus supporting power consumption savings based on channel delay spread reporting. For example, the described techniques provide network energy savings by disabling power amplifiers at a network entity based on User Equipment (UE) reporting of delay spread and antenna array loss thresholds. For example, the network entity may indicate (e.g., in a downlink control message) to the UE the capability of the network entity to disable the power amplifier for downlink transmissions. In response to the capability indication, the UE may measure a delay spread or antenna array loss threshold of the downlink signal and report the delay spread or antenna array loss threshold to the network entity. Based on the reported delay spread or antenna array loss threshold, the network entity may determine a number of power amplifiers that may be disabled for downlink transmissions without reducing received signal power at the UE below a minimum threshold. The network entity disabled power amplifier may be a power amplifier having an input power less than a threshold (e.g., less than a maximum input power threshold). A method for wireless communication by a UE is described. The method may include receiving control signaling from a network entity, the control signaling indicating the network entity to disable capabilities of one or more power amplifiers of a set of a plurality of power amplifiers of the network entity, receiving a downlink signal from the network entity, the downlink signal being transmitted using at least a subset of the set of a plurality of power amplifiers, the downlink signal being associated with a Modulation and Coding Scheme (MCS), and transmitting a report to the network entity based on the control signaling, the report indicating an antenna array loss threshold and a channel delay spread measurement, wherein the antenna array loss threshold and the channel delay spread measurement are determined based on the downlink signal and the MCS. A UE for wireless communication is described. The UE may include one or more memories storing processor executable code; and a processor(s) for the one or more processors, the one or more processors are coupled with the one or more memories. The one or more processors may be operable, individually or collectively, to execute the code to cause the UE to receive control signaling from a network entity, the control signaling indicating the network entity to disable capabilities of one or more of a set of a plurality of power amplifiers of the network entity, receive a downlink signal from the network entity, the downlink signal being transmitted using at least a subset of the set of a plurality of power amplifiers, the downlink signal being associated with an MCS, and transmit a report to the network entity based on the control signaling, the report indicating an antenna array loss threshold and a channel delay spread measurement, wherein the antenna array loss threshold and the channel delay spread measurement are determined based on the downlink signal and the MCS. Another UE for wireless communication is described. The UE may include means for receiving control signaling from a network entity, the control signaling indica