公开(公告)号：US11877248B2

公开(公告)日：2024-01-16

申请号：US17517605

申请日：2021-11-02

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally ,  Biswajeet Kumar

IPC: H04W52/24 ,  H04W72/0446 ,  H04W72/23 ,  H04W72/52 ,  H04W72/54

CPC classification number: H04W52/246 ,  H04W52/241 ,  H04W72/0446 ,  H04W72/23 ,  H04W72/52 ,  H04W72/54

Abstract: Methods and computer software are disclosed for determining a power budget for physical channels in a system. The method may include, obtaining a mean and variance of a previously computed power component; determining an estimate of a current power component in a current frame based on the mean and variance of the previously computed power component; and computing a power budget in a current frame using the estimate of the current power component.

公开(公告)号：US11102044B2

公开(公告)日：2021-08-24

申请号：US16582811

申请日：2019-09-25

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally ,  Saikat Senapati ,  Somasekhar Pemmasani ,  Ramesh Annavajjala

IPC: H04L27/26 ,  H04W64/00 ,  G01S13/76

Abstract: Systems, methods and computer software are disclosed for providing high resolution timing advance estimation based on Physical Random Access Channel (PRACH). An example method includes receiving a preamble signal r(n); performing signal conditioning on r(n); down sampling the signal and performing antialiasing filtering to provide a y(n) signal; correlating y(n) with a reference preamble with a reference preamble sequence c(n) to provide correlation output Ryc; using a peak value P of the correlation output Ryc to detect a preamble ID and a timing advance; constructing a sequence s(n) by segmenting r_centered(n) for length L around an index P*24; performing time domain interpolation of c(n) around index P to obtain a sequence c_interpolated(n); performing time domain interpolation between sequences s(n) and c_interpolated(n); detecting a peak position Q of the correlation; and deriving TA as P*24−L/2+q in terms of Ts.

公开(公告)号：US12213092B2

公开(公告)日：2025-01-28

申请号：US17494335

申请日：2021-10-05

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally ,  Saikat Senapati ,  Somasekhar Pemmasani

IPC: H04W56/00 ,  H04L27/26 ,  H04W74/0833

Abstract: Systems, methods and computer software are disclosed for providing high resolution timing advance estimation based on Physical Random Access Channel (PRACH). An example method includes receiving a preamble signal r(n) having a predetermined sampling frequency and a predetermined length; correlating a down sampled version of the received preamble with a reference preamble sequence c(n) using an FFT method to provide correlation output Ryc; using a peak value P of the correlation output Ryc to detect a preamble ID and a timing advance at a resolution of 24Ts; zero padding sequences Y(k) and C(k) so that they have a predetermined length resulting in sequences Y_hat(k) and C_hat(k), which are 1024-point FFT of y(n) and c(n); performing a maximum likelihood estimation (MLE) to estimate a timing offset; and detecting a peak value out of the R_hat(m) and using a corresponding index Q to provide a timing advance with an accuracy of 2Ts.

公开(公告)号：US20240121725A1

公开(公告)日：2024-04-11

申请号：US18537602

申请日：2023-12-12

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally

IPC: H04W52/24 ,  H04B17/318 ,  H04L1/00 ,  H04W24/10 ,  H04W80/02

CPC classification number: H04W52/245 ,  H04B17/318 ,  H04L1/0003 ,  H04W24/10 ,  H04W80/02

Abstract: A method for providing uplink link adaptation in 5G base stations is presented. In one embodiment the method includes computing a RSSI of each allocation measuredRSSI(i), including blocks which are unused; computing measurements upon receiving channel allocation and TPC commands from a MAC, the measurements including a revisedWidebandRSSI including a revisedRSSI(i), a lowest relative threshold of each allocation, and a revised RSSI of each allocation after applying TPC commands normalized by the revisedWidebandRSSI; when the revisedWidebandRSSI is greater than a widebandRSSlthreshold, then resetting the TPC commands to be sent to the particular UE and sending a saturation_error_indication message to the MAC; wherein when a revisedRSSlnorm(i) for at least one allocation is below the widebandRSSlthreshold, sending the quant_loss_error_indication message to the MAC along with the corresponding index of the allocation; and adapting the MCS and power control information for each of the allocations in the next subframe.

公开(公告)号：US20210314880A1

公开(公告)日：2021-10-07

申请号：US17221762

申请日：2021-04-02

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally

IPC: H04W52/24 ,  H04W24/10 ,  H04B17/318 ,  H04W80/02 ,  H04L1/00

Abstract: A method for providing uplink link adaptation in 5G base stations is presented. In one embodiment the method includes computing a RSSI of each allocation measuredRSSI(i), including blocks which are unused; computing measurements upon receiving channel allocation and TPC commands from a MAC, the measurements including a revisedWidebandRSSI including a revisedRSSI(i), a lowest relative threshold of each allocation, and a revised RSSI of each allocation after applying TPC commands normalized by the revisedWidebandRSSI; when the revisedWidebandRSSI is greater than a widebandRSSlthreshold, then resetting the TPC commands to be sent to the particular UE and sending a saturation_error_indication message to the MAC; wherein when a revisedRSSInorm(i) for at least one allocation is below the widebandRSSlthreshold, sending the quant_loss_error_indication message to the MAC along with the corresponding index of the allocation; and adapting the MCS and power control information for each of the allocations in the next subframe.

公开(公告)号：US20250071691A1

公开(公告)日：2025-02-27

申请号：US18944737

申请日：2024-11-12

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally

IPC: H04W52/24 ,  H04B17/318 ,  H04L1/00 ,  H04W24/10 ,  H04W80/02

Abstract: A method for providing uplink link adaptation in 5G base stations is presented. In one embodiment the method includes computing a RSSI of each allocation measuredRSSI(i), including blocks which are unused; computing measurements upon receiving channel allocation and TPC commands from a MAC, the measurements including a revisedWidebandRSSI including a revisedRSSI(i), a lowest relative threshold of each allocation, and a revised RSSI of each allocation after applying TPC commands normalized by the revisedWidebandRSSI; when the revisedWidebandRSSI is greater than a widebandRSSIthreshold, then resetting the TPC commands to be sent to the particular UE and sending a saturation_error_indication message to the MAC; wherein when a revisedRSSInorm(i) for at least one allocation is below the widebandRSSIthreshold, sending the quant_loss_error_indication message to the MAC along with the corresponding index of the allocation; and adapting the MCS and power control information for each of the allocations in the next subframe.

公开(公告)号：US20220030535A1

公开(公告)日：2022-01-27

申请号：US17494335

申请日：2021-10-05

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally ,  Saikat Senapati ,  Somasekhar Pemmasani

IPC: H04W56/00 ,  H04L27/26 ,  H04W74/08

Abstract: Systems, methods and computer software are disclosed for providing high resolution timing advance estimation based on Physical Random Access Channel (PRACH). An example method includes receiving a preamble signal r(n) having a predetermined sampling frequency and a predetermined length; correlating a down sampled version of the received preamble with a reference preamble sequence c(n) using an FFT method to provide correlation output Ryc; using a peak value P of the correlation output Ryc to detect a preamble ID and a timing advance at a resolution of 24 Ts; zero padding sequences Y(k) and C(k) so that they have a predetermined length resulting in sequences Y_hat(k) and C_hat(k), which are 1024-point FFT of y(n) and c(n); performing a maximum likelihood estimation (MLE) to estimate a timing offset; and detecting a peak value out of the R_hat(m) and using a corresponding index Q to provide a timing advance with an accuracy of 2 Ts.

公开(公告)号：US20210328691A1

公开(公告)日：2021-10-21

申请号：US17237042

申请日：2021-04-21

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally

IPC: H04B17/18 ,  H04B7/06 ,  H04B7/0452

Abstract: A method and system for performing Over-The-Air (OTA) testing for 5G New Radio (NR) beamforming is presented. In one embodiment the method includes transmitting, by only the User Equipments (UEs) U and Sx, the Orthogonal Frequency Division Multiplexing (OFDM) symbols containing UL Demodulation Reference Signal (DMRS) that are orthogonal to each other during Uplink (UL) subframes; performing, by a gNB, channel estimation in the same UL subframe, precoding matrix computation, and antenna elements weighting coefficient computations; transmitting, by the gNB in a subsequent Downlink (DL) subframe, known data streams to UEs U and Sx using the massive MU-MIMO beamforming coefficients; collecting by the host PC, the IQ samples from the UE U and all the victim UEs Vx in the DL subframe; and evaluating a performance of the beam that was meant for UE U.

公开(公告)号：US12143943B2

公开(公告)日：2024-11-12

申请号：US18537602

申请日：2023-12-12

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally

IPC: H04W24/10 ,  H04B17/318 ,  H04L1/00 ,  H04W52/24 ,  H04W80/02

Abstract: A method for providing uplink link adaptation in 5G base stations is presented. In one embodiment the method includes computing a RSSI of each allocation measuredRSSI(i), including blocks which are unused; computing measurements upon receiving channel allocation and TPC commands from a MAC, the measurements including a revisedWidebandRSSI including a revisedRSSI(i), a lowest relative threshold of each allocation, and a revised RSSI of each allocation after applying TPC commands normalized by the revisedWidebandRSSI; when the revisedWidebandRSSI is greater than a widebandRSSIthreshold, then resetting the TPC commands to be sent to the particular UE and sending a saturation_error_indication message to the MAC; wherein when a revisedRSSInorm(i) for at least one allocation is below the widebandRSSIthreshold, sending the quant_loss_error_indication message to the MAC along with the corresponding index of the allocation; and adapting the MCS and power control information for each of the allocations in the next subframe.

公开(公告)号：US11844030B2

公开(公告)日：2023-12-12

申请号：US17221762

申请日：2021-04-02

Applicant: Parallel Wireless, Inc.

Inventor： Hemanth Palally

IPC: H04W24/10 ,  H04W52/24 ,  H04L1/00 ,  H04W80/02 ,  H04B17/318

CPC classification number: H04W52/245 ,  H04B17/318 ,  H04L1/0003 ,  H04W24/10 ,  H04W80/02

Abstract: A method for providing uplink link adaptation in 5G base stations is presented. In one embodiment the method includes computing a RSSI of each allocation measuredRSSI(i), including blocks which are unused; computing measurements upon receiving channel allocation and TPC commands from a MAC, the measurements including a revisedWidebandRSSI including a revisedRSSI(i), a lowest relative threshold of each allocation, and a revised RSSI of each allocation after applying TPC commands normalized by the revisedWidebandRSSI; when the revisedWidebandRSSI is greater than a widebandRSSIthreshold, then resetting the TPC commands to be sent to the particular UE and sending a saturation_error_indication message to the MAC; wherein when a revisedRSSInorm(i) for at least one allocation is below the widebandRSSIthreshold, sending the quant_loss_error_indication message to the MAC along with the corresponding index of the allocation; and adapting the MCS and power control information for each of the allocations in the next subframe.