INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)

A method of Side-Link positioning by at least one first node is described. The method includes receiving at least one location service request from at least one entity for estimating a location of at least one fourth node. The method further includes establishing a communication link with at least one second node, at least one third node, or the at least one fourth node. The method further includes estimating the location of the at least one fourth node using location identification procedures involving at least one of the at least one second node, the at least one third node, and the at least one fourth node based on the at least one location service request. The method further includes transmitting at least one location service response to the at least one entity.

A photobioreactor system ( 100 ) is disclosed. The photobioreactor system ( 100 ) comprises a base ( 102 ), at least one reflector fin ( 108 ) comprising a first end ( 112 ) and a second end ( 114 ). The first end ( 112 ) of the at least one reflector fin ( 108 ) is positioned adjacent to the base ( 102 ). A stack of photobioreactors ( 104 ) is disposed on the base to prepare a culture of photosynthetic organisms. The at least one reflector fin ( 108 ) is configured to reflect light rays towards the culture of photosynthetic organisms. The at least one reflector fin ( 108 ) is defined with a vertical length at least equal to the elevation of the stack of photobioreactors ( 104 ).

Embodiments herein provide a device ( 1000 ) for multi-user eye-tracking in an environment. The device ( 1000 ) includes a plurality of illumination sources ( 110 ) configured to illuminate faces users gazing region of interest in the environment and imaging sensors ( 120 ) configured to capture image of the users gazing the region of interest in the environment. The device ( 1000 ) also includes an eye-tracking unit ( 130 ) configured to determine an identity of the user in the captured image; identify a user profile corresponding to the identified user based on the determined identity; determine gaze parameters of the identified user based on the user profile. Further, the eye-tracking unit ( 130 ) is configured to determine gaze directions of the identified user based on the gaze parameters and determine the area of interest to the identified user based on the gaze directions.

A method of positioning in a wireless communication network is described. The method comprises receiving, by a user equipment (UE), an LTE positioning protocol (LPP) signaling from a location management function (LMF). The UE transmits at least one capability message indicating support for at least one AI/ML model for at least one first positioning estimation functionality. The UE receives at least one configuration from the LMF. The UE performs AI/ML inference of at least one of UE location estimate and measured features using the at least one AI/ML model based on at least one second positioning estimation functionality and reference signal configurations. The UE transmits at least one of UE location estimate and measured features, to the LMF.

The present invention discloses a system ( 100 ) and method ( 1200 ) for ultrasound imaging using arbitrary virtual array sources of aperture excitation. The system ( 100 ) comprises at least one user device ( 102 ), an imaging device ( 104 ), a probe module ( 106 ), a sample module ( 108 ), a communication network ( 110 ) and at least one server ( 112 ). The user device ( 102 ) is configured to accept input data from the user. The imaging device ( 104 ) designed to monitor input data from the user interface and control the functioning of the PAUT probe. The probe module ( 106 ) triggers multiple transducer elements based on the input data to generate a wave pattern, where the wave propagates into the sample module ( 108 ) for non-destructive testing. The received wave is processed by the imaging device ( 104 ) to convert the analogue signal to digital before generating and displaying an ultrasound image of the sample.

A method of detecting and characterizing a defect in an object is described. The method comprises implementing comb-like pattern transducers upon the object to be tested, where each comb-like pattern transducer comprises array of source elements is periodically placed, selectively activating at least a group of source elements of the first comb-like pattern transducer to generate one or more guided waves. The method further comprises transmitting the one or more guided waves from the first end of the object, receiving at least a portion of the one or more guided waves at the second comb-like pattern transducer, and receiving a remaining portion of the one or more guided waves at the first comb-like pattern transducer, analyzing the one or more received guided waves to determine a cut-off frequency, calculating a remnant thickness value based on the cut-off frequency, and detecting and characterizing the defect in the object based on the remnant thickness value.

A system for measurement of non-invasive and calibration-free blood pressure (BP) is disclosed. The system comprises a measurement probe ( 302 ) which is in contact with a person's skin. The measurement probe ( 302 ) comprises a first array of sensors ( 302 - 1 ) and a second array of sensors ( 302 - 2 ). The first array of sensors ( 302 - 1 ) determines a force exerted on skin ( 304 ) and the second array of sensors ( 302 - 2 ) determines a compression-decompression characteristics of the arteries through skin. The force exerted on skin and the compression-decompression characteristics of the arteries are used to determine indices indicative of the material properties of the vessel. Based on the indices indicative of the material properties of the vessel, blood pressure and continuous transmural pressure waveform may be determined.

A method for beam management in side-link communication between User Equipment (UEs) ( 104 ) operating in a wireless communication network ( 100 ) is described. The method comprises transmitting a reference signal using at least one beam by a first UE ( 104 - 1 ). The first UE ( 104 - 1 ) receives a feedback report of the at least one beam based on the reference signal from the second UE ( 104 - 2, 104 - 4 ). The feedback report of the at least one beam comprises at least one of UE identifier (ID), beam ID, beam strength, and beam validity. The first UE ( 104 - 1 ) updates entries of a beam management table based on the feedback report.

The present application discloses a method of using a precoder matrix for wireless signal transmission in an OFDM based communication systems in accordance with an embodiment of the present disclosure. The method comprises: signaling by a Base station (BS), a configuration for receiving a set of reference signals by a UE for estimating the wireless channel between the BS and the UE, signaling by the BS, a configuration of at least one of a set of first basis vectors, a set of second basis vectors, a set of third basis vectors and a set of fourth basis vectors to the UE explicitly or implicitly, receiving by the BS, at least one of a subset of the first basis vectors, a subset of the second basis vectors, a first subset of the third basis vectors and a first subset of the fourth basis vectors, determining by the BS, a set of second subset of third basis vectors based on the first subset of third basis vectors and a set of second subset of fourth basis vectors based on the first subset of fourth basis vectors, determining by the BS, a precoder matrix based on the subset of first basis vectors, the subset of second basis vectors, the subset of third basis vectors and the subset of fourth basis vectors, obtaining by the BS, a precoded wireless signal by precoding a wireless signal using the precoder matrix and transmitting by the BS, the precoded wireless signal.

The present disclosure discloses methods for reducing the reference signal (RS) density for future wireless systems. The method comprising The method comprising receiving, by the UE, a plurality of configuration parameters for a first reference signal transmitted using a plurality of active ports and a second reference signal transmitted on a subset of active ports, wherein the plurality of configuration parameters comprising at least one of a performance metric, a criteria for performance monitoring, and configuration settings for the first reference signal and the second reference signal, receiving, by the UE, at least one of the first reference signal and the second reference signal in a first transmission occasion of the base station, determining, by the UE, the performance metric based on the at least one received reference signal, monitoring, by the UE, the performance metric to determine if the criteria for the performance monitoring is satisfied, and transmitting, by the UE, a feedback message based on the criteria for the performance monitoring.