公开(公告)号：US20220012116A1

公开(公告)日：2022-01-13

申请号：US16925585

申请日：2020-07-10

Applicant: Hitachi, Ltd.

Inventor： Daisuke MAEDA ,  Sudhanshu GAUR

IPC: G06F11/07 ,  G06F30/20

Abstract: Systems and methods described herein are directed to minimizing the resource requirements for edge and network while keeping the accuracy of machine learning classifier by utilizing simulated test data. Once sufficient measured test data is collected by the server, the server instructs the edge computer to reduce the transmission of data received from the corresponding sensors.

公开(公告)号：US20180097572A1

公开(公告)日：2018-04-05

申请号：US15284613

申请日：2016-10-04

Applicant: Hitachi, Ltd.

Inventor： Takeshi SHIBATA ,  Sudhanshu GAUR

IPC: H04B17/318 ,  G01S5/02 ,  G01S5/14

CPC classification number: H04B17/318 ,  G01S5/0252 ,  G01S5/14 ,  G06F2221/2111 ,  H04B17/27 ,  H04W4/023

Abstract: In some examples, a computing device may receive sensed data information sent in a transmission by a first sensor, the sensed data information including a sensor identifier and sensed data of a first sensor. The computing device may associate a first timestamp with the sensed data information. Further, the computing device may receive, from other sensors, radio signal strength information including signal strength data related to the transmission and a second timestamp corresponding to detection of the transmission. The computing device may determine a location of the first sensor based on the signal strength data received from the other sensors. In addition, the computing device may associate the location with the sensor identifier of the first sensor based on comparing the first timestamp with the second timestamp. In some cases, one or more second sensors may forward the transmission from the first sensor to the computing device.

公开(公告)号：US20140146689A1

公开(公告)日：2014-05-29

申请号：US13684327

申请日：2012-11-23

Applicant: HITACHI, LTD.

Inventor： Sudhanshu GAUR ,  Long GAO ,  Joydeep ACHARYA

IPC: H04W72/08

CPC classification number: H04W72/082 ,  H04J11/0053 ,  H04J11/0056 ,  H04L1/0069 ,  H04L1/1867 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0073 ,  H04L2001/0093

Abstract: A communications system employing CoMP transmission to suppress interference comprises: a CoMP user equipment; and a plurality of base stations, one of the base stations being an associated base station of the CoMP user equipment to transmit data to the CoMP user equipment, the plurality of base stations including multiple CoMP base stations for the CoMP user equipment. The CoMP base stations for the CoMP user equipment transmit CoMP downlink data, including subframes which comprise physical resource blocks having a plurality of resource elements (REs) and cell-specific reference signal (CRS) resource element (RE) locations. PDSCH bit-level muting or puncturing information is determined, based on radio resource management measurement and the subframes sent from the multiple CoMP base stations, to identify PDSCH REs that suffer strong CRS interference transmission from within the multiple CoMP base stations and are to be subjected to one of bit-level muting or bit-level puncturing.

Abstract translation: 采用CoMP传输抑制干扰的通信系统包括：CoMP用户设备; 以及多个基站，所述基站中的一个是所述CoMP用户设备的相关基站，用于向所述CoMP用户设备发送数据，所述多个基站包括用于所述CoMP用户设备的多个CoMP基站。 用于CoMP用户设备的CoMP基站发送CoMP下行链路数据，包括包括具有多个资源元素（RE）和小区特定参考信号（CRS）资源元素（RE））位置的物理资源块的子帧。 基于无线电资源管理测量和从多个CoMP基站发送的子帧来确定PDSCH比特级静音或删截信息，以识别在多个CoMP基站内遭受强CRS干扰传输并且将被承受的PDSCH RE 到位级静音或比特级穿孔之一。

公开(公告)号：US20130243109A1

公开(公告)日：2013-09-19

申请号：US13875619

申请日：2013-05-02

Applicant: HITACHI, LTD.

Inventor： Sudhanshu GAUR ,  Joydeep ACHARYA

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0426 ,  H04B7/0452 ,  H04B7/0465

Abstract: A method for processing user symbols with Tomlinson Harashima precoder (THP) in a base station, of a wireless system having K user terminals (UEs) which communicate with the base station via an uplink channel and a corresponding downlink (DL) channel, comprises estimating DL channel matrix; determining receiver processing matrix; computing effective matrix DL channel Heff; performing QR decomposition of Heff; computing THP matrices; calculating scalar weights for the UEs; processing user symbols by the THP having the THP matrices to produce an output of filtered vector symbols for the UEs; directing output of the THP to a channel represented by the DL channel matrix through which communications occur in the wireless system with the UEs; providing the receiver processing matrix to the UEs for performing additional receiver processing on the transmitted signals; and providing the scalar weights to the UEs to be used on the transmitted signals at the UEs.

Abstract translation: 一种用于在具有通过上行链路信道和相应的下行链路（DL）信道与基站通信的K个用户终端（UE）的无线系统的基站中用Tomlinson Harashima预编码器（THP）处理用户符号的方法，包括估计 DL信道矩阵; 确定接收机处理矩阵; 计算有效矩阵DL信道Heff; 执行Heff的QR分解; 计算THP矩阵; 计算UE的标量权重; 通过具有THP矩阵的THP处理用户符号以产生用于UE的滤波后的矢量符号的输出; 将所述THP的输出引导到由与所述UE在无线系统中发生通信的DL信道矩阵表示的信道; 向所述UE提供所述接收机处理矩阵，以对所发射的信号执行附加的接收机处理; 以及向在UE处发送的信号上要使用的UE提供标量权重。

公开(公告)号：US20250165231A1

公开(公告)日：2025-05-22

申请号：US18516801

申请日：2023-11-21

Applicant: HITACHI, Ltd.

Inventor： Sudhanshu GAUR ,  Takuya HABARA ,  Shoji YUNOKI

IPC: G06F8/35 ,  G06F16/25

Abstract: Systems and methods described herein involve program code generation for data processing programs, which can involve, for receipt of a user prompt, reference a prompt database that associates historical prompts, program code generated from the historical prompts, and information indicative of whether execution results of the program code were expected to generate a combined prompt from the user prompt and a historical prompt from the historical prompts determined to be related to the combined prompt from the referencing; reference a program template database that associates combinations of the historical prompts and historical program code that was verified to work as expected to generate program code with the combined prompt; and execute the generated program code and the combined prompt for the data processing programs.

公开(公告)号：US20250156404A1

公开(公告)日：2025-05-15

申请号：US18388249

申请日：2023-11-09

Applicant: HITACHI, Ltd.

Inventor： Takuya HABARA ,  Shoji YUNOKI ,  Sudhanshu GAUR

IPC: G06F16/242 ,  G06F16/21 ,  G06F16/25

Abstract: A search query generation method for information retrieval, the method comprising receiving, by a processor, a first query issued by a user; extracting, by the processor, a plurality of field status items associated with the first query; extracting, by the processor, first schema information associated with the plurality of field status items; adding, by the processor, the plurality of field status items and the first schema information as contextual information to the first query to generate a second query, generating, by the processor, an information search code based on the second query; and executing, by the processor, the information search code to retrieve information associated with the first query from a plurality of data source systems.

公开(公告)号：US20220358311A1

公开(公告)日：2022-11-10

申请号：US17313780

申请日：2021-05-06

Applicant: Hitachi, Ltd.

Inventor： Daisuke MAEDA ,  Sudhanshu GAUR

IPC: G06K9/00 ,  H04N7/18

Abstract: Example implementations involve a location system, which can involve associating each location of one or more unidentified targets detected from sensor data of the one or more sensors with identifiers corresponding to the transmitter of each of the one or more pairs of electronic devices, by calculating first distance relationships indicative of relationships of distances between the each location of the one or more unidentified targets detected from the sensor data of the one or more sensors and a reference point; calculating second distance relationships indicative of relationships of distances between the transmitter and the receiver of each of the one or more pairs of electronic devices; and associating the identifiers corresponding to the transmitter of the each of the one or more pairs of electronic devices with the each location of the one or more unidentified targets based on the first distance relationships and the second distance relationships.

公开(公告)号：US20200044961A1

公开(公告)日：2020-02-06

申请号：US16054930

申请日：2018-08-03

Applicant: Hitachi, Ltd.

Inventor： Yusuke SHOMURA ,  Joydeep ACHARYA ,  Sudhanshu GAUR

IPC: H04L12/721 ,  H04L12/24 ,  H04L29/06 ,  H04L29/08 ,  H04L12/813

Abstract: This invention aim to improves the flexibility of data flows management from sensor to cloud, datalake or other system, which can manage the overall data flows within the system and control them dynamically. As a result, it can reduce transmission cost and storage cost properly.

公开(公告)号：US20160044514A1

公开(公告)日：2016-02-11

申请号：US14773913

申请日：2013-03-15

Applicant: HITACHI, LTD.

Inventor： Joydeep ACHARYA ,  Long GAO ,  Sudhanshu GAUR

IPC: H04W16/10 ,  H04W24/08 ,  H04W48/16

CPC classification number: H04W16/10 ,  H04W24/02 ,  H04W24/08 ,  H04W48/16 ,  H04W84/045

Abstract: A communications system includes a macro base station, a plurality of UEs (user equipment), a plurality of small cells, and a network through which the macro base station, the UEs, and the small cells communicate with each other, the small cells within a macro coverage area of the macro base station. The macro base station comprises a processor, a memory, and a small cell on/off module which is operable, for each small cell of the plurality of small cells, to: determine an interference metric for the small cell; if the determined interference metric meets a preset condition for the small cell, then determine a loss in signal strength to the UEs associated with the small cell caused by switching off the small cell; and judge whether to switch off the small cell based on at least one of the determined interference metric or the determined loss in signal strength.

Abstract translation: 通信系统包括宏基站，多个UE（用户设备），多个小小区以及宏基站，UE和小小区之间相互通信的网络，小区内的小小区 宏基站的宏覆盖区域。 宏基站包括处理器，存储器和小小区开/关模块，其可操作用于所述多个小小区中的每个小小区以确定所述小小区的干扰度量; 如果确定的干扰度量符合小小区的预设条件，则确定由关闭小小区导致的与小小区相关联的UE的信号强度的损失; 并且基于所确定的干扰度量或确定的信号强度的损失中的至少一个来判断是否关闭小小区。