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1. 发明申请

US20220094771A1 METHODS AND APPARATUS FOR RECOVERING NETWORK ASSOCIATION INFORMATION 有权
公开(公告)号：US20220094771A1
公开(公告)日：2022-03-24
申请号：US17541590
申请日：2021-12-03
申请人： Casa Systems, Inc.
发明人： Shane Hooker , Bin Mo , Jacob Eipe , Gaurav Paliwal
IPC分类号： H04L29/08 , H04L29/06 , H04L5/00 , H04L12/801
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to determine a current data transmission sequence number for a next packet in a communication session with a remote computing device. An interruption in the communication session is detected. Checkpointed data for the communication session is determined that is indicative of a previous sequence number used for a previous packet sent to the remote computing device. A resolution procedure is performed to determine the current data transmission sequence number for the next packet in the communication session, including determining an estimated next sequence number for transmitting data in the communication session based on the checkpointed data, transmitting a first packet to the remote computing device, receiving a second packet from the remote computing device that has an associated sequence number, and determining the current sequence number for the next packet in the communication session.

2. 发明授权

US11283559B2 Methods and apparatus for generating and using dynamic profiles for cable transmission systems 有权
公开(公告)号：US11283559B2
公开(公告)日：2022-03-22
申请号：US16903163
申请日：2020-06-16
申请人： Casa Systems, Inc.
发明人： Hongbiao Zhang , Chain Lee , Yanbo Yuan , Tao Yu , Weidong Chen
IPC分类号： H04L5/00 , H04L5/02 , H04L27/26
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to schedule individual orthogonal frequency-division multiple access (OFDMA) resources on an upstream channel to serve a data transmission request from a downstream device. A schedule for a set of available resources on the upstream channel to serve the data transmission request is generated, based on a dynamic bit loading profile, including generating data indicative of a first bit loading profile for a first set of resources from the set of available resources for a first burst, and data indicative of a second bit loading profile for a second set of resources from the set of available resources for a second burst. The schedule is transmitted to a downstream device, such that the downstream device is configured to encode the first burst using the first bit loading profile and the second burst using the second bit loading profile.

3. 发明申请

US20200252489A1 METHODS AND APPARATUS FOR RECOVERING NETWORK ASSOCIATION INFORMATION 审中-公开
公开(公告)号：US20200252489A1
公开(公告)日：2020-08-06
申请号：US16782978
申请日：2020-02-05
申请人： Casa Systems, Inc.
发明人： Shane Hooker , Bin Mo , Jacob Eipe , Gaurav Paliwal
IPC分类号： H04L29/08 , H04L5/00 , H04L29/06 , H04L12/801
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to determine a current data transmission sequence number for a next packet in a communication session with a remote computing device. An interruption in the communication session is detected. Checkpointed data for the communication session is determined that is indicative of a previous sequence number used for a previous packet sent to the remote computing device. A resolution procedure is performed to determine the current data transmission sequence number for the next packet in the communication session, including determining an estimated next sequence number for transmitting data in the communication session based on the checkpointed data, transmitting a first packet to the remote computing device, receiving a second packet from the remote computing device that has an associated sequence number, and determining the current sequence number for the next packet in the communication session.

4. 发明授权

US10383122B2 Dynamic sharing of OFDMA and ATDMA signals 有权
公开(公告)号：US10383122B2
公开(公告)日：2019-08-13
申请号：US15728916
申请日：2017-10-10
申请人： Casa Systems, Inc.
发明人： Tao Yu , Douglas Keith Rosich , Weidong Chen
IPC分类号： H04B7/26 , H04L5/00 , H04L25/02 , H04L27/00 , H04L27/26 , H04L27/38 , H04W72/04 , H04J4/00 , H04L27/156
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to decode modulated data. A modulated signal is received. A format of the modulated signal is determined, wherein the format can include a first format comprising a first type of modulated signal, or a second format comprising the first type of modulated signal and a second type of modulated signal that is different than the first type. The modulated signal is decoded by determining a frequency shift amount based on the format of the modulated signal, shifting a frequency band of the first type of modulated signal from an original position to a shifted position, thereby shifting a center frequency of the first type of modulated signal by the frequency shift amount, and filtering, based on the format of the modulated signal, signals outside of the frequency band of the shifted first type of modulated signal.

5. 发明授权

US08885781B2 System and method for detecting burst noise during quadrature amplitude modulation communications 有权
标题翻译：用于在正交调幅通信期间检测脉冲串噪声的系统和方法
公开(公告)号：US08885781B2
公开(公告)日：2014-11-11
申请号：US13670000
申请日：2012-11-06
申请人： Casa Systems, Inc.
发明人： David Fox
IPC分类号： H03D1/06
CPC分类号： H04L27/38
摘要： A system and method for detecting burst noise during quadrature amplitude modulation (QAM) communications are provided. A QAM signal is acquired at a receiver in communication with a network. The QAM signal is demodulated at the receiver to identify a plurality of symbols. Amplitudes for each of the plurality of symbols are determined, and are compared to a predetermined threshold. For each amplitude that is greater than the predetermined threshold, information is recorded at the receiver relating to a burst noise event. The magnitude of the burst noise can be determined by measuring a difference between a received constellation point and a perimeter constellation point closest to the received constellation point. The information about the burst noise event can be transmitted to an error correction module for reducing future burst noise in the network. Equalizer coefficients and tracking loop performance can be adjusted/enhanced using the burst noise information.
摘要翻译：提供了用于在正交幅度调制（QAM）通信期间检测突发噪声的系统和方法。在与网络通信的接收机处获取QAM信号。在接收机处解调QAM信号以识别多个符号。确定多个符号中的每一个的幅度，并将其与预定阈值进行比较。对于大于预定阈值的每个幅度，信息被记录在与突发噪声事件有关的接收机处。可以通过测量接收到的星座点与最接近的星座点的周边星座点之间的差异来确定突发噪声的幅度。关于突发噪声事件的信息可以被发送到纠错模块，以减少网络中未来的突发噪声。可以使用突发噪声信息来调整/增强均衡器系数和跟踪环路性能。

6. 发明申请

US20130182752A1 System and Method for Detecting Burst Noise During Quadrature Amplitude Modulation Communications 有权
标题翻译：用于在正交幅度调制通信期间检测突发噪声的系统和方法
公开(公告)号：US20130182752A1
公开(公告)日：2013-07-18
申请号：US13670000
申请日：2012-11-06
申请人： Casa Systems, Inc.
发明人： David Fox
IPC分类号： H04L27/34 , H04B1/38
CPC分类号： H04L27/38
摘要： A system and method for detecting burst noise during quadrature amplitude modulation (QAM) communications are provided. A QAM signal is acquired at a receiver in communication with a network. The QAM signal is demodulated at the receiver to identify a plurality of symbols. Amplitudes for each of the plurality of symbols are determined, and are compared to a predetermined threshold. For each amplitude that is greater than the predetermined threshold, information is recorded at the receiver relating to a burst noise event. The magnitude of the burst noise can be determined by measuring a difference between a received constellation point and a perimeter constellation point closest to the received constellation point. The information about the burst noise event can be transmitted to an error correction module for reducing future burst noise in the network. Equalizer coefficients and tracking loop performance can be adjusted/enhanced using the burst noise information.
摘要翻译：提供了用于在正交幅度调制（QAM）通信期间检测突发噪声的系统和方法。在与网络通信的接收机处获取QAM信号。在接收机处解调QAM信号以识别多个符号。确定多个符号中的每一个的幅度，并将其与预定阈值进行比较。对于大于预定阈值的每个幅度，信息被记录在与突发噪声事件有关的接收机处。可以通过测量接收到的星座点与最接近的星座点的周边星座点之间的差异来确定突发噪声的幅度。关于突发噪声事件的信息可以被发送到纠错模块，以减少网络中未来的突发噪声。可以使用突发噪声信息来调整/增强均衡器系数和跟踪环路性能。

7. 发明申请

US20210329465A1 SCALABLE EVOLVED PACKET CORE 有权
公开(公告)号：US20210329465A1
公开(公告)日：2021-10-21
申请号：US17222365
申请日：2021-04-05
申请人： Casa Systems, Inc.
发明人： Wenxing Zheng , Gibson Ang
IPC分类号： H04W16/02 , H04W28/08 , G06F9/455 , G06F9/50
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to provide a distributed core framework for a voice and data network. A control plane comprising a set of control plane components is executed using a set of virtual machines running on a set of computing devices. The control plane comprises a first network interface to the voice and data network that is shared by the set of control plane components. A data plane comprising a set of data plane components is executed using a set of virtual machines running on a set of computing devices. The data plane comprises a second network interface to the voice and data network that is shared by the set of data plane components. Upon receipt of a session request from a remote device, a selected data plane component is selected to handle a corresponding session, such that the selected data plane component can directly communicate with the remote device using the second network interface to handle the session.

8. 发明申请

US20180255463A1 Scalable evolved packet core 审中-公开
公开(公告)号：US20180255463A1
公开(公告)日：2018-09-06
申请号：US15932354
申请日：2018-02-16
申请人： Casa Systems, Inc.
发明人： Wenxing Zheng , Gibson Ang
IPC分类号： H04W16/02 , H04W28/08 , G06F9/455
CPC分类号： H04W16/02 , G06F9/45558 , G06F9/5005 , G06F2009/4557 , G06F2009/45595 , H04W28/08 , H04W84/042
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to provide a distributed core framework for a voice and data network. A control plane comprising a set of control plane components is executed using a set of virtual machines running on a set of computing devices. The control plane comprises a first network interface to the voice and data network that is shared by the set of control plane components. A data plane comprising a set of data plane components is executed using a set of virtual machines running on a set of computing devices. The data plane comprises a second network interface to the voice and data network that is shared by the set of data plane components. Upon receipt of a session request from a remote device, a selected data plane component is selected to handle a corresponding session, such that the selected data plane component can directly communicate with the remote device using the second network interface to handle the session.

9. 发明申请

US20170373716A1 System and Method for Reducing Interference in OFDM Channels 有权
公开(公告)号：US20170373716A1
公开(公告)日：2017-12-28
申请号：US15189381
申请日：2016-06-22
申请人： Casa Systems, Inc.
发明人： Douglas Rosich , Weidong Chen , Tao Yu
IPC分类号： H04B3/32 , H04L27/26 , H04L12/28
CPC分类号： H04B3/32 , H04L12/2801 , H04L27/2649 , H04L27/2691
摘要： A system and method for signal processing in a cable modem termination system (CMTS) is provided. A CMTS receiver in communication with a plurality of cable modems at a upstream signal or a cable modem receiver in communication with the CMTS at a downstream signal. A plurality of ATDMA channel processors include a filter for recovering an ATDMA signal and a OFDM channel processor includes a filter for processing a combined OFDM and ATDMA signal. A summation module subtracts the ATDMA signal from the combined ATDMA and OFDM signal to obtain a clean OFDM signal.

10. 发明授权

US11606699B2 Scalable evolved packet core 有权
公开(公告)号：US11606699B2
公开(公告)日：2023-03-14
申请号：US17222365
申请日：2021-04-05
申请人： Casa Systems, Inc.
发明人： Wenxing Zheng , Gibson Ang
IPC分类号： H04W16/02 , G06F9/455 , G06F9/50 , H04W84/04
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to provide a distributed core framework for a voice and data network. A control plane comprising a set of control plane components is executed using a set of virtual machines running on a set of computing devices. The control plane comprises a first network interface to the voice and data network that is shared by the set of control plane components. A data plane comprising a set of data plane components is executed using a set of virtual machines running on a set of computing devices. The data plane comprises a second network interface to the voice and data network that is shared by the set of data plane components. Upon receipt of a session request from a remote device, a selected data plane component is selected to handle a corresponding session, such that the selected data plane component can directly communicate with the remote device using the second network interface to handle the session.

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