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51. 发明公开

US20240154658A1 BEAMFORMING AND INTERFERENCE MITIGATION TECHNIQUES FOR MASSIVE MIMO UPLINK AND DOWNLINK IN O-RAN 7-2 COMPATIBLE BASE STATIONS 审中-公开
公开(公告)号：US20240154658A1
公开(公告)日：2024-05-09
申请号：US17979397
申请日：2022-11-02
申请人： Neelam Chandwani , Thushara Hewavithana , Peng Lu , Bishwarup Mondal , Avik Sengupta , Michael Beadle , Ranjit Cavatur
发明人： Neelam Chandwani , Thushara Hewavithana , Peng Lu , Bishwarup Mondal , Avik Sengupta , Michael Beadle , Ranjit Cavatur
IPC分类号： H04B7/06 , H04L5/00
CPC分类号： H04B7/0617 , H04L5/0051
摘要： An apparatus for use in an O-RAN base station includes processing circuitry. To configure the O-RAN base station for signal processing in an O-RAN network, the processing circuitry is to decode an SRS and a DMRS in a UL stream received from at least one UE. Channel estimation is performed based on the SRS to obtain a channel estimate matrix of channel estimates associated with reception of the UL stream. A noise covariance is generated using the DMRS. Beamforming weights are determined using the channel estimate matrix and the noise covariance. Beamforming is performed on UL data corresponding to the UL stream to generate beamformed data streams. The beamforming is based on applying the beamforming weights to the UL data.

52. 发明申请

US20210136800A1 PDSCH RATE MATCHING AROUND SSB FOR NR UNLICENSED SPECTRUM OPERATION 有权
公开(公告)号：US20210136800A1
公开(公告)日：2021-05-06
申请号：US17145639
申请日：2021-01-11
申请人： Yingyang Li , Gang Xiong , Bishwarup Mondal , Dae Won Lee
发明人： Yingyang Li , Gang Xiong , Bishwarup Mondal , Dae Won Lee
IPC分类号： H04W72/12 , H04W48/10 , H04W72/00 , H04W72/04
摘要： A generation-Node B (gNB) configured for unlicensed spectrum operation above 52.6 GHz in a fifth-generation new-radio (NR) system (5GS) may encode a parameter (e.g., ssb-PositionsInBurst) for transmission to a UE (e.g., in the SIM or UE specific RRC signalling). The parameter may indicate candidate positions of synchronization signal blocks (SSBs) within a discovery reference signal (DRS) measurement timing configuration (DMTC) transmission window within slots of a system frame (SFN). During the DMTC window, the gNB may perform a LBT procedure on an unlicensed carrier of the unlicensed spectrum to determine if the unlicensed carrier is available. When the LBT is successful (i.e., the unlicensed carrier is available), the gNB may encode a discovery reference signal (DRS) for transmission on the unlicensed carrier. The DRS may include one or more of the SSBs transmitted during the candidate positions that fall within the DRS. The gNB may perform rate matching around the SSBs for a scheduled PDSCH based on the indicated parameter and transmit the rate-matched PDSCH.

53. 发明授权

US08798021B2 Hierarchical network and interference management 有权
标题翻译：分层网络和干扰管理
公开(公告)号：US08798021B2
公开(公告)日：2014-08-05
申请号：US13422459
申请日：2012-03-16
申请人： Nitin Mangalvedhe , Amitabha Ghosh , Bishwarup Mondal , Rapeepat Ratasuk
发明人： Nitin Mangalvedhe , Amitabha Ghosh , Bishwarup Mondal , Rapeepat Ratasuk
IPC分类号： H04W4/00
CPC分类号： H04W24/02
摘要： The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for network management through a hierarchical architecture with a control functionality of a network server (e.g., C-SON) in relationship to clusters comprising eNBs (access points), and for implementing coordinated multi-point (CoMP) transmission and reception in conjunction with inter-cell interference coordination (ICIC) in wireless networks such as LTE wireless networks. In particular, embodiments of the invention describe control and coordination mechanisms among the network elements for different network architectures and use-case scenarios. Such mechanisms may be managed by a centralized self-organizing network controller such as C-SON and hierarchically via localized controllers (such as cluster coordinators) residing in macro eNBs depending on system architectural constraints and network state. A fault-tolerant mechanism then may be defined to recover from failure of controlling sub-elements so that the network remains stable at all times.
摘要翻译：说明书和附图提出了一种用于网络管理的新方法，装置和软件相关产品（例如，计算机可读存储器），其通过具有与包括eNB的集群相关联的网络服务器（例如，C-SON）的控制功能的分级架构（接入点），并且用于在诸如LTE无线网络的无线网络中结合小区间干扰协调（ICIC）来实现协调的多点（CoMP）发送和接收。特别地，本发明的实施例描述了用于不同网络架构和用例场景的网络元件之间的控制和协调机制。这样的机制可以由诸如C-SON的集中式自组织网络控制器管理，并且根据系统架构约束和网络状态分层地经由驻留在宏eNB中的集中式控制器（例如集群协调器）来管理。然后可以定义容错机制以从控制子元件的故障中恢复，使得网络始终保持稳定。

54. 发明授权

US08756067B2 Computationally efficient audio coder 有权
标题翻译：计算效率高的音频编码器
公开(公告)号：US08756067B2
公开(公告)日：2014-06-17
申请号：US13848422
申请日：2013-03-21
申请人： Bishwarup Mondal
发明人： K. P. P. Kalyan Chakravarthy , Navaneetha K. Ruthramoorthy , Pushkar P. Patwardhan , Bishwarup Mondal
IPC分类号： G10L19/00
CPC分类号： G10L19/00 , G10L19/002 , G10L19/008 , G10L19/02 , G10L19/025 , H04L1/0039 , H04L25/0262
摘要： The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal. The audio coder further compares the computed short-block characteristics to a set of threshold values to detect presence of an attack in each of the short-blocks and changes the long-block frame length of one or more short-blocks upon detecting the attack in the respective one or more short-blocks.
摘要翻译：本发明提供了一种用于音频信号的压缩编码的计算上有效的技术，并且还提供了一种用于增强编码音频信号的声音质量的技术。这通过包括更准确的攻击检测和计算有效的量化技术来实现。改进的音频编码器将输入音频信号转换成数字音频信号。然后，音频编码器将数字音频信号分成具有长块帧长度的较大帧，并且将每个帧划分成多个短块。然后，音频编码器基于输入音频信号的变化来计算每个分割的短块的短块音频信号特性。音频编码器进一步将计算出的短块特性与一组阈值进行比较，以检测每个短块中的攻击的存在，并且在检测到攻击中改变一个或多个短块的长块帧长度相应的一个或多个短块。

55. 发明授权

US08407043B2 Computationally efficient audio coder 有权
标题翻译：计算效率高的音频编码器
公开(公告)号：US08407043B2
公开(公告)日：2013-03-26
申请号：US13047604
申请日：2011-03-14
申请人： K. P. P. Kalyan Chakravarthy , Navaneetha K. Ruthramoorthy , Pushkar P. Patwardhan , Bishwarup Mondal
发明人： K. P. P. Kalyan Chakravarthy , Navaneetha K. Ruthramoorthy , Pushkar P. Patwardhan , Bishwarup Mondal
IPC分类号： G10L19/00
CPC分类号： G10L19/00 , G10L19/002 , G10L19/008 , G10L19/02 , G10L19/025 , H04L1/0039 , H04L25/0262
摘要： The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal. The audio coder further compares the computed short-block characteristics to a set of threshold values to detect presence of an attack in each of the short-blocks and changes the long-block frame length of one or more short-blocks upon detecting the attack in the respective one or more short-blocks.
摘要翻译：本发明提供了一种用于音频信号的压缩编码的计算上有效的技术，并且还提供了一种用于增强编码音频信号的声音质量的技术。这通过包括更准确的攻击检测和计算有效的量化技术来实现。改进的音频编码器将输入音频信号转换成数字音频信号。然后，音频编码器将数字音频信号分成具有长块帧长度的较大帧，并且将每个帧划分成多个短块。然后，音频编码器基于输入音频信号的变化来计算每个分割的短块的短块音频信号特性。音频编码器进一步将计算出的短块特性与一组阈值进行比较，以检测每个短块中的攻击的存在，并且在检测到攻击中改变一个或多个短块的长块帧长度相应的一个或多个短块。

56. 发明申请

US20100150266A1 METHOD AND APPARATUS FOR CODEBOOK-BASED FEEDBACK IN A CLOSED LOOP WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：封闭式无线通信系统中基于代码的反馈的方法与装置
公开(公告)号：US20100150266A1
公开(公告)日：2010-06-17
申请号：US12334917
申请日：2008-12-15
申请人： Bishwarup Mondal , Amitabha Ghosh , Fan Wang
发明人： Bishwarup Mondal , Amitabha Ghosh , Fan Wang
IPC分类号： H04L25/03
CPC分类号： H04B7/0478 , H04B7/0417 , H04B7/0639 , H04L5/0007 , H04L25/03343
摘要： A method and apparatus are provided for feedback for closed-loop transmitting with multiple transmit antenna elements and multiple receive antenna elements. A base station includes a codebook containing sets of weightings for the multiple transmit antenna elements, with each set of weightings identified by an index and the codebook known to the base station and a served mobile station (MS). The base station pre-codes pilot signals using a precoding matrix, preferably a unitary matrix, to produce pre-coded pilot signals, which precoding matrix may or may not be known to the MS and which precoding matrix may or may not be included in the codebook. The base station then transmits the pre-coded pilot signals to the MS via the multiple transmit antenna elements and, in response, receives an index to a set of weightings in the codebook for use in a subsequent transmission of a data stream.
摘要翻译：提供了一种用于具有多个发射天线元件和多个接收天线元件的闭环发射的反馈的方法和装置。基站包括码本，其包含多个发射天线单元的加权集合，每一组加权由索引和基站已知的码本和被服务的移动台（MS）标识。基站使用预编码矩阵，优选地是酉矩阵来预编码导频信号，以产生预编码的导频信号，预编码矩阵可以是MS也可以不是已知的，并且哪个预编码矩阵可以或可以不包括在码本。然后，基站经由多个发送天线元件向MS发送预先编码的导频信号，作为响应，接收到码本中的一组加权的索引，用于数据流的后续发送。

57. 发明公开

US20240250766A1 METHOD OF PERFORMANCE MONITORING FOR CSI PREDICTION 审中-公开
公开(公告)号：US20240250766A1
公开(公告)日：2024-07-25
申请号：US18628042
申请日：2024-04-05
申请人： Viktor Sergeev , Bishwarup Mondal , Avik Sengupta , Utthara Shankar , Dong Han
发明人： Viktor Sergeev , Bishwarup Mondal , Avik Sengupta , Utthara Shankar , Dong Han
IPC分类号： H04B17/391 , H04W24/10
CPC分类号： H04B17/3913 , H04W24/10
摘要： An apparatus and system are described for measurement and reporting of Channel State Information (CSI) prediction performance. A user equipment (UE) receives Channel State Information (CSI) Reference Signals (CSI-RS) from a 5th generation NodeB (gNB) at different time instances and performs perform channel measurements on the CSI-RS. The UE calculates a predicted CSI for a later time instance based on the CSI-RS and subsequently performs a channel measurement based on a CSI-RS received in the later time instance. The UE calculates an actual CSI based on the CSI-RS received in the later time instance. determines metrics based on a comparison between the predicted CSI and the actual CSI, and transmits the metrics to the gNB.

58. 发明申请

US20220104235A1 APERIODIC CSI-RS RESOURCE SET TRIGGERING BY DCI WITH APERIODIC TRIGGERING OFFSET 有权
公开(公告)号：US20220104235A1
公开(公告)日：2022-03-31
申请号：US17496323
申请日：2021-10-07
申请人： Guotong Wang , Alexei Davydov , Bishwarup Mondal , Avik Sengupta
发明人： Guotong Wang , Alexei Davydov , Bishwarup Mondal , Avik Sengupta
IPC分类号： H04W72/12
摘要： A generation node B (gNB) configured for aperiodic channel state information reference signal (CSI-RS) triggering and transmission may encode signalling for transmission to a user equipment (UE). The signalling to indicate an aperiodic Triggering Offset (aperiodicTriggeringOffset). The aperiodic Triggering Offset may comprise a slot offset. The gNB may encode a downlink control information (DCI) for transmission that may trigger transmission of a CSI-RS in one or more aperiodic CSI-RS resource set(s) (i.e., in one or more slots (n)). The DCI triggers transmission of the aperiodic CSI-RS within a triggered slot with the slot offset (i.e., the aperiodicTriggeringOffset). The gNB may transmit the CSI-RS in resource elements of the triggered slot in accordance with the slot offset, when CSI-RS resources are available in the slot at the slot offset. The gNB may postpone transmission of the aperiodically triggered CSI-RS to a first available downlink slot when the CSI-RS resources are not available in the triggered slot at the slot offset.

59. 发明授权

US08611442B2 Method and apparatus for channel sounding in an orthogonal frequency division multiplexing communication system 有权
标题翻译：在正交频分复用通信系统中用于信道探测的方法和装置
公开(公告)号：US08611442B2
公开(公告)日：2013-12-17
申请号：US12848448
申请日：2010-08-02
申请人： Rapeepat Ratasuk , Amitabha Ghosh , Bishwarup Mondal
发明人： Rapeepat Ratasuk , Amitabha Ghosh , Bishwarup Mondal
IPC分类号： H04K1/10
CPC分类号： H04L5/003 , H04L27/261
摘要： An Orthogonal Frequency Division Multiplexing communication system is provided that triggers a transmission of an uplink sounding signal by use of a Downlink Control Information (DCI) message. In various embodiments of the invention, the DCI message may be used to individually trigger an uplink sounding signal by a single user equipment or may be used to trigger an uplink sounding signal by a group of users equipment.
摘要翻译：提供了一种通过使用下行链路控制信息（DCI）消息来触发上行链路探测信号的传输的正交频分复用通信系统。在本发明的各种实施例中，DCI消息可以用于单个用户设备单独地触发上行链路探测信号，或者可以用于一组用户设备触发上行链路探测信号。

60. 发明申请

US20130279350A1 Methods and Apparatus for Interference Management 审中-公开
标题翻译：干扰管理方法与装置
公开(公告)号：US20130279350A1
公开(公告)日：2013-10-24
申请号：US13454594
申请日：2012-04-24
申请人： Paul Erickson , Gerald Gutowski , Bishwarup Mondal , Robert Stephens , Frederick Vook
发明人： Paul Erickson , Gerald Gutowski , Bishwarup Mondal , Robert Stephens , Frederick Vook
IPC分类号： H04W24/00
CPC分类号： H04W24/08 , H04W72/082
摘要： Methods and apparatus for identifying interference when prevailing conditions give rise to a suspicion of interference. Upon detection by one or more elements of a wireless network that interference may be present, measurements are directed to provide information indicating whether interference is present and whether the interference is severe enough to warrant interference mitigation. The information is analyzed to determine if severe interference is in fact present, and interference mitigation measures are directed if severe interference is identified. Analysis may include identifying one or more dominant interferers, and may further include directing additional measurements and analyzing information provided thereby in order to identify one or more dominant interferers.
摘要翻译：当现行条件引起怀疑的干扰时，识别干扰的方法和装置。一旦被无线网络的一个或多个元件检测到可能存在干扰，就进行测量以提供指示干扰是否存在以及干扰是否足够严重以确保干扰减轻的信息。分析信息以确定是否存在严重干扰，并且如果识别出严重的干扰，则干扰减轻措施是有针对性的。分析可以包括识别一个或多个主导干扰源，并且还可以包括引导额外的测量和分析由此提供的信息，以便识别一个或多个主要干扰源。

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