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41.发明授权公开(公告)号：US11374705B2
公开(公告)日：2022-06-28
申请号：US17138545
申请日：2020-12-30
Applicant: Centre of Excellence in Wireless Technology , Indian Institute of Technology Madras (IIT Madras)
Inventor： Abhijeet Abhimanyu Masal , Priyanka Dey , Sunil Kaimalettu , Dhivagar Baskaran , Paka Venkata Sriharsha , Jeniston Deviraj Klutto Milleth , Bhaskar Ramamurthi
Abstract: Embodiments herein provides a method and apparatus for data communication in an OFDM system. The method comprising receiving by a second OFDM apparatus a plurality of parameters, a signal comprising data and at least one of a Reference Signal (RS) and a message from a first OFDM apparatus. The plurality of parameters comprises at least one of a numerology of the first apparatus, a numerology of the second apparatus, a ratio of numerology of the first apparatus to the second apparatus and a measurement window. The method includes filtering a desired band comprising the at least one of the RS and the message from the received signal, removing a cyclic prefix from the filtered signal, and decoding at least one of the RS and the message from the signal with adjusting a circular shift in the set of symbols based on the plurality of parameters.
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公开(公告)号：US11349548B2
公开(公告)日：2022-05-31
申请号：US16887801
申请日：2020-05-29
Applicant: Centre of Excellence in Wireless Technology , Indian Institute of Technology Madras (IIT Madras)
Inventor： Chandrasekaran Mohandoss , Thirunageswaram Ramachandran Ramya , Jeniston Deviraj Klutto Milleth , Bhaskar Ramamurthi
IPC: H04B7/06 , H04B7/08 , H04W16/28 , H04L5/00 , H04B17/336 , H04B17/318 , H04W24/10
Abstract: Accordingly, the embodiment provides a method for detecting a beam failure event by a Base Station (BS) (100) in a wireless network (1000). The method includes transmitting at least one of a resource scheduling configuration and a reference signal configuration to at least one first User Equipment (UE) (300a) in the wireless network (1000). Further, the method includes determining whether at least one response is received from the first UE (300a). Further, the method includes detecting a beam failure event associated with at least one beam from the plurality of beams of the first UE (300a) in response to determining that the at least one response is not received from the first UE (300a).
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43.发明申请公开(公告)号：US20220132447A1
公开(公告)日：2022-04-28
申请号：US17451952
申请日：2021-10-22
Applicant: Centre of Excellence in Wireless Technology , Indian Institute of Technology Madras (IIT Madras)
Inventor： Abhijeet Abhimanyu Masal , Priyanka Dey , Sunil Kaimalettu , Jeniston Deviraj Klutto Milleth , Bhaskar Ramamurthi
Abstract: A system and a method for performing uplink (UL) time synchronization in non-terrestrial networks (NTN) include Performing Downlink (DL) synchronization SSB signals. At least one information is received by a UE 102 from an NTN BS 104. A location information of a satellite is obtained using the at least one information received by the UE 102. Location of the UE 102 is estimated using one of GNSS receiver of the UE 102 and by processing at least one reference signal received by the UE 102 from multiple NTN-BS 104, using at least one multilateration technique and RTK. Timing Advance (TA) estimate is determined using the location of the satellite and location of the UE 102. TA applied is determined using the TA estimate and TA margin. PRACH is transmitted based on the TA applied and an information related to the TA applied is reported to the NTN-BS 104. Residual TA is estimated using the reported information related to the TA applied and the detected PRACH. The residual TA is indicated to the UE 102 for subsequent UL transmissions, in order to achieve the UL time synchronization in the NTN based communication network.
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公开(公告)号：US20210242999A1
公开(公告)日：2021-08-05
申请号：US17053049
申请日：2019-05-07
Applicant: Centre of Excellence in Wireless Technology , Indian Institute of Technology Madras (IIT Madras)
Inventor： Dhivagar Baskaran , Sunil Kaimalettu , Thirunageswaram Ramachandran Ramya , Pardhasarathy Jyothi , Sri Harsha Venkata Paka , Saraswati Kumari , Abhijeet Masal , Chandrasekaran Mohandoss , Sree Charan Teja Reddy Budama , Priyanka Dey , Klutto Milleth Jeniston Deviraj , Bhaskar Ramamurthi
Abstract: Accordingly, embodiments herein disclose a method and system for novel signaling schemes for 5G New Radio. The method includes determining a subcarrier spacing (SCS) of a Bandwidth Part (BWP), a size of the BWP, and a location of the BWP. Further, the method includes generating a BWP configuration comprising the SCS of the BWP, the size the BWP, and the location of the BWP. Further, the method includes indicating the BWP configuration to a User Equipment.
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45.发明授权公开(公告)号：US10536314B2
公开(公告)日：2020-01-14
申请号：US15614326
申请日：2017-06-05
Applicant: Centre of Excellence in Wireless Technology , Indian Institute of Technology Madras (IIT Madras)
Inventor： Dhivagar Baskaran , Jeniston Deviraj Klutto Milleth , Sunil Kaimalettu , Navinnath Palanisamy , Bhaskar Ramamurthi
Abstract: Embodiments herein provide an OFDMA method for performing OFDM based communication in a wireless communication system. The OFDMA method includes splitting a carrier bandwidth into a number of subbands and modulating resource units in each of the subbands with data symbols in a parallel manner. Further, multiplexing the resource units by transforming each of the modulated resource units through a plurality of unitary transformations at a stage. Further, generating an output by performing a parallel to serial conversion of the transformed resource units. Further, the OFDMA method includes generating an OFDM signal by multiplexing an output from at least one of the previous stage to another stage by transforming the output through a unitary transformation for a defined number of times. Furthermore, the OFDMA method includes transmitting the OFDM signal over a wireless channel in the wireless network system.
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Patent Agency Ranking
公开(公告)号：US20170026094A1
公开(公告)日：2017-01-26
申请号：US15204477
申请日：2016-07-07
Inventor： Jeniston Deviraj Klutto Milleth , Chandrasekaran Mohandoss , Sendilramkumar Devar , Thulasiram Jonna , Abhijeet Masal , Bhaskar Ramamurthi
CPC classification number: H04B7/0456 , H04B7/0617 , H04B7/0695
Abstract: Embodiments herein provide a method for beam steering in a Multiple Input Multiple Output (MIMO) system. The method includes steering a transmit beam using a precoder matrix determined based on a plurality of parameters, wherein the transmit beam is formed using at least one of a weight of each antenna element, a number of antenna elements, and an inter-antenna element spacing.
Abstract translation: 本文的实施例提供了一种用于多输入多输出（MIMO）系统中的波束控制的方法。 该方法包括使用基于多个参数确定的预编码器矩阵来控制发送波束，其中使用每个天线元件的权重，天线元件的数量和天线间天线间距中的至少一个来形成发射波束 。
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47.发明申请公开(公告)号：US20160337156A1
公开(公告)日：2016-11-17
申请号：US15152392
申请日：2016-05-11
Inventor： Jeniston Deviraj Klutto Milleth , Chandrasekaran Mohandoss , Sendilram Kumar , Thulasiram Jonna , Abhijeet Masal , Bhaskar Ramamurthi
CPC classification number: H04J11/0056 , H04B7/0456 , H04B7/0619 , H04L1/00 , H04L5/0023 , H04L27/2601 , H04L2025/03426
Abstract: Embodiments herein provide a Multiple-Input Multiple-Output (MIMO) method for a communication system in general, and more particularly to an Orthogonal Frequency Division Multiplexing (OFDM) based communication system to serve more than one receivers on the same resources. The method includes selecting, by a transmitter, a plurality of precoder matrices for a plurality of receivers from a predefined codebook of precoders, where the plurality of precoder matrices is dynamically cycled within an allocated resource. Further, the method includes transmitting, by the transmitter, a symbol vector precoded with the plurality of precoder matrices over MIMO channel associated with the plurality of receivers.
Abstract translation: 本文的实施例总体上提供了一种用于通信系统的多输入多输出（MIMO）方法，更具体地说，涉及一种基于正交频分复用（OFDM））通信系统，用于在相同资源上服务多于一个的接收机。 该方法包括由发射机从预编码器的预定义码本中选择多个接收机的多个预编码器矩阵，其中多个预编码器矩阵在所分配的资源内动态循环。 此外，该方法包括由发射机发送与多个接收机相关联的MIMO信道上用多个预编码器矩阵预编码的符号向量。
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公开(公告)号：US20250142366A1
公开(公告)日：2025-05-01
申请号：US18934128
申请日：2024-10-31
Applicant: Centre of Excellence in Wireless Technology , INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT Madras)
Inventor： Advith Arun , Shiv Sankar , Jeniston Deviraj Klutto Milleth , Bhaskar Ramamurthi
IPC: H04W24/02 , G06F16/174 , H04L41/16
Abstract: The present disclosure provides methods and apparatuses for monitoring performance of two-sided AI/ML models in a wireless communication system. The method comprises of computing at least one first basis vector of an input data matrix and obtaining a compressed data matrix, by passing the data matrix through an AI/ML encoder model. The method further comprises of transmitting, the compressed data matrix in one of a control or a data channel.
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公开(公告)号：US12256413B2
公开(公告)日：2025-03-18
申请号：US18365912
申请日：2023-08-04
Inventor： Deepak Agarwal , Jyothi Pardhasarathy , Ebin Chacko , Budama Sree Charan Teja Reddy , Chandrasekaran Mohandoss , Thirunageswaram Ramachandran Ramya , Sunil Kaimalettu , Jeniston Deviraj Klutto Milleth , Bhaskar Ramamurthi
Abstract: The present invention relates to a method of reducing blind decoding attempts by a User Equipment (UE) in a telecommunication network. The method comprises configuring a Search Space (SS) configuration to the UE. A Base Station (BS) signals one of a subset of Aggregation Levels (ALs) to be monitored based on channel quality of the UE and an associated time period, and a value of multiplication factor (k) and an associated time period. The UE iteratively monitors a Physical Downlink Control Channel (PDCCH) on the ALs signalled by the BS till the UE stops receiving a new configuration. The UE performs one of adopting an original configuration, requesting the BS for a new configuration, utilizing a default configuration or utilizing an original configuration.
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公开(公告)号：US20240414684A1
公开(公告)日：2024-12-12
申请号：US18697509
申请日：2022-09-30
Applicant: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY , Indian Institute of Technology Madras (IIT Madras)
Inventor： Vikram Singh , Abhijeet Abhimanyu Masal , Jeniston Deviraj Klutto Milleth , Bhaskar Ramamurthi
Abstract: The present invention relates to methods of improving accuracy of positioning a node in a cellular system. The invention discloses a method for receiving reference signal and assistance information at different antenna on each antenna port per antenna group in each time interval from antenna beams of a transmitter in a time orthogonal manner using the configuration information. The method also comprises estimation of positioning parameters based on time domain multiplexing of the at least one reference signal and the at least one assistance information received on different antenna on each antenna port per antenna group. The invention further discloses methods of improving accuracy by estimating orientation of a user equipment, shortlisting best group of measurement of positioning parameters, and optimization of time and angle window for estimation of location of the user equipment.
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