US-12628085-B2 - Measurement report for passive or semi-passive node

US12628085B2US 12628085 B2US12628085 B2US 12628085B2US-12628085-B2

Abstract

Method and apparatus for selection of an optimal node or transmission configuration based on measurement or report from a passive or semi-passive node. The apparatus receives, from a network entity, a first signal to initiate communication between the network entity and the passive or semi-passive node. The apparatus measures a received power of the first signal determine a time based metric or energy harvesting metric. The apparatus transmits, to the network entity, a backscattered signal comprising an indication related to one or more operational parameters for the passive or semi-passive node based on the time based metric or the energy harvesting metric. The apparatus may communicate with the network entity based on at least one of the one or more operational parameters.

Inventors

Keerthi Priya DASALA
Navid Abedini
Junyi Li

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260512
Application Date: 20231213

Claims (20)

1 . An apparatus for wireless communication at a passive or semi-passive node, comprising: at least one memory; and at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to cause the apparatus to: receive, from a network entity, a first signal to initiate communication between the network entity and the passive or semi-passive node; measure a received power of the first signal determine a time based metric or energy harvesting metric; and transmit, to the network entity, a backscattered signal comprising an indication related to one or more operational parameters for the passive or semi-passive node based on the time based metric or the energy harvesting metric.
2 . The apparatus of claim 1 , further comprising a transceiver coupled to the at least one processor, the transceiver being configured to: receive, from the network entity, the first signal to initiate the communication between the network entity and the passive or semi-passive node; and transmit, to the network entity, the backscattered signal comprising the indication related to the one or more operational parameters for the passive or semi-passive node based on the time based metric or the energy harvesting metric.
3 . The apparatus of claim 1 , wherein the indication indicates the energy harvesting metric relative to a threshold range of input power for at least one of harvested energy, harvesting efficiency, or output voltage.
4 . The apparatus of claim 1 , wherein the indication indicates at least one class from a set of classes that correspond with characteristics of the passive or semi-passive node.
5 . The apparatus of claim 1 , wherein the backscattered signal indicates the energy harvesting metric including at least one of a harvested energy, a harvesting efficiency, or an output voltage.
6 . The apparatus of claim 1 , wherein the backscattered signal indicates the energy harvesting metric for a particular beam, a particular cell, or a particular downlink occasion.
7 . The apparatus of claim 1 , wherein the backscattered signal indicates an increase or a reduction in an effective isotropic radiated power (EIRP) for a reader based on the energy harvesting metrics of the passive or semi-passive node to harvest energy relative to a target harvest threshold.
8 . The apparatus of claim 1 , wherein the indication indicates the time based metric comprising a total receive power measurement over a period of time.
9 . The apparatus of claim 1 , wherein the at least one processor is configured to: communicate with the network entity based on at least one of the one or more operational parameters.
10 . A method of wireless communication at a passive or semi-passive node, comprising: receiving, from a network entity, a first signal to initiate communication between the network entity and the passive or semi-passive node; measuring a received power of the first signal determine a time based metric or energy harvesting metric; and transmitting, to the network entity, a backscattered signal comprising an indication related to one or more operational parameters for the passive or semi-passive node based on the time based metric or the energy harvesting metric.
11 . The method of claim 10 , wherein the indication indicates the energy harvesting metric relative to a threshold range of input power for at least one of harvested energy, harvesting efficiency, or output voltage.
12 . The method of claim 10 , wherein the indication indicates at least one class from a set of classes that correspond with characteristics of the passive or semi-passive node.
13 . The method of claim 10 , wherein the backscattered signal indicates the energy harvesting metric including at least one of a harvested energy, a harvesting efficiency, or an output voltage.
14 . The method of claim 10 , wherein the backscattered signal indicates the energy harvesting metric for a particular beam, a particular cell, or a particular downlink occasion.
15 . The method of claim 10 , wherein the backscattered signal indicates an increase or a reduction in an effective isotropic radiated power (EIRP) for a reader based on the energy harvesting metrics of the passive or semi-passive node to harvest energy relative to a target harvest threshold.
16 . The method of claim 10 , wherein the indication indicates the time based metric comprising a total receive power measurement over a period of time.
17 . The method of claim 10 , further comprising: communicating with the network entity based on at least one of the one or more operational parameters.
18 . An apparatus for wireless communication at a network entity, comprising: at least one memory; and at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to cause the apparatus to: obtain, from a passive or semi-passive node, a backscattered signal comprising an indication related to one or more operational parameters for the passive or semi-passive node based on a time based metric or an energy harvesting metric; and communicate with the passive or semi-passive node in response to at least one of the operational parameters.
19 . The apparatus of claim 18 , further comprising a transceiver coupled to the at least one processor, the transceiver being configured to: obtain, from the passive or semi-passive node, the backscattered signal comprising the indication related to the one or more operational parameters for the passive or semi-passive node based on the time based metric or the energy harvesting metric; and communicate with the passive or semi-passive node in response to at least one of the operational parameters.
20 . The apparatus of claim 18 , wherein the at least one processor is configured to: provide, prior to obtaining the backscattered signal, a first signal to the passive or semi-passive node to initiate communication between the network entity and the passive or semi-passive node.

Description

TECHNICAL FIELD The present disclosure relates generally to communication systems, and more particularly, to a configuration for selection of an optimal node or transmission configuration based on measurement or report from a passive or semi-passive node. INTRODUCTION 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. 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, and time division synchronous code division multiple access (TD-SCDMA) systems. These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. BRIEF SUMMARY The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary neither identifies key or critical elements of all aspects nor delineates the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for wireless communication at a passive or semi-passive node. The apparatus may be a device at a passive or semi-passive node. The device may be a processor and/or a modem at a passive or semi-passive node or the passive or semi-passive node itself. The apparatus receives, from a network entity, a first signal to initiate communication between the network entity and the passive or semi-passive node. The apparatus measures a received power of the first signal determine a time based metric or energy harvesting metric. The apparatus transmits, to the network entity, a backscattered signal comprising an indication related to one or more operational parameters for the passive or semi-passive node based on the time based metric or the energy harvesting metric. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for wireless communication at a network entity. The apparatus may be a device at a network entity. The device may be a processor and/or a modem at a network entity or the network entity itself. The apparatus obtains, from a passive or semi-passive node, a backscattered signal comprising an indication related to one or more operational parameters for the passive or semi-passive node based on a time based metric or an energy harvesting metric. The apparatus communicates with the passive or semi-passive node in response to at least one of the operational parameters. To the accomplishment of the foregoing and related ends, the one or more aspects may include the features hereinafter fully described and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network. FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure. FIG. 2B is a diagram illustrating an example of downlink (DL) channels within a subframe, in accordance with various aspects of the present disclosure. FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspec