公开(公告)号：US08743974B2

公开(公告)日：2014-06-03

申请号：US13597165

申请日：2012-08-28

申请人： Marcel Nassar ,  Il Han Kim ,  Tarkesh Pande ,  Anand G. Dabak

发明人： Marcel Nassar ,  Il Han Kim ,  Tarkesh Pande ,  Anand G. Dabak

IPC分类号： H04L25/00 ,  H04B3/00

CPC分类号： H04L1/0003 ,  H04B3/542 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04L1/0009

摘要： Systems and methods for adaptive modulation and coding with frame size adjustment are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include identifying a temporal region of a cyclostationary noise over which a frame is to be sent across a PLC network, the cyclostationary noise having a plurality of temporal regions, each of the plurality of temporal regions having a distinct spectral shape. The method may also include applying a given one of a plurality of Modulation and Coding Schemes (MCSs) to the frame to produce a modulated frame, wherein the given one of the plurality of MCSs is selected based, least in part, upon the spectral shape corresponding to the identified temporal region. The method may further include transmitting the modulated frame across the PLC network, at least in part, over the identified temporal region.

摘要翻译： 描述了具有帧大小调整的自适应调制和编码的系统和方法。 在各种实现中，这些系统和方法可以适用于电力线通信（PLC）。 例如，一种方法可以包括识别通过PLC网络发送帧的周期平稳噪声的时间区域，所述周期平稳噪声具有多个时间区域，所述多个时间区域中的每一个具有不同的频谱形状 。 该方法还可以包括将多个调制和编码方案（MCS）中给定的一个应用于帧以产生调制帧，其中至少部分地基于频谱形状选择多个MCS中的给定一个MCS 对应于所识别的时间区域。 该方法可以进一步包括至少部分地通过所识别的时间区域在PLC网络之间传输调制帧。

公开(公告)号：US20130051268A1

公开(公告)日：2013-02-28

申请号：US13597010

申请日：2012-08-28

申请人： Marcel Nassar ,  Il Han Kim ,  Tarkesh Pande ,  Anand G. Dabak ,  Ramanuja Vedantham ,  Kumaran Vijayasankar

发明人： Marcel Nassar ,  Il Han Kim ,  Tarkesh Pande ,  Anand G. Dabak ,  Ramanuja Vedantham ,  Kumaran Vijayasankar

IPC分类号： H04B3/46

CPC分类号： H04B3/54 ,  H04B2203/5466 ,  H04B2203/5495

摘要： Systems and methods for Carrier Sense Multiple Access (CSMA) and collision detection using a noise model are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include receiving a signal via a communications channel in a PLC network, determining a feature of the signal, comparing the feature of the signal with a corresponding feature of a cyclostationary noise model, and taking a predetermined action based, at least in part, upon the comparison. In some implementations, taking the predetermined action may include determining whether to backoff or to transmit a packet over the communications channel. In other implementations, taking the predetermined action may include determining whether an error is due to a packet collision or due to a low quality of the communications channel.

摘要翻译： 描述了载波侦听多路访问（CSMA）的系统和方法以及使用噪声模型的碰撞检测。 在各种实现中，这些系统和方法可以适用于电力线通信（PLC）。 例如，一种方法可以包括通过PLC网络中的通信信道接收信号，确定信号的特征，将信号的特征与循环平稳噪声​​模型的对应特征进行比较，并且基于 至少部分比较。 在一些实现中，采取预定动作可以包括确定是否退避或通过通信信道发送分组。 在其他实现中，采取预定动作可以包括确定错误是由于分组冲突还是由于通信信道质量低而确定。

公开(公告)号：US20220124543A1

公开(公告)日：2022-04-21

申请号：US17561563

申请日：2021-12-23

申请人： Oner ORHAN ,  Vasuki NARASIMHA SWAMY ,  Marcel NASSAR ,  Hosein NIKOPOUR ,  Shilpa TALWAR

发明人： Oner ORHAN ,  Vasuki NARASIMHA SWAMY ,  Marcel NASSAR ,  Hosein NIKOPOUR ,  Shilpa TALWAR

IPC分类号： H04W28/02 ,  H04W24/02 ,  H04W28/08 ,  G06N3/08

摘要： The present disclosure provides connection management techniques based on graph neural networks (GNN) and deep reinforcement learning (DRL) to optimize user association and load balancing. A graph structure of a communication network is considered for the GNN architecture and DRL is used to learn parameters of the GNN algorithm/model. Connection management is defined as a combinatorial graph optimization problem, and the DRL mechanism uses the underlying graph to learn weights of the GNN for an optimal user connections or associations. The connection management techniques can consider local network features to make better decisions to balance network traffic load while network throughput is also maximized. Implementations are provided based on edge computing frameworks include the Open RAN (O-RAN) architecture. Other embodiments may be described and/or claimed.

公开(公告)号：US20130051482A1

公开(公告)日：2013-02-28

申请号：US13597165

申请日：2012-08-28

申请人： Marcel Nassar ,  IL Han Kim ,  Tarkesh Pande ,  Anand G. Dabak

发明人： Marcel Nassar ,  IL Han Kim ,  Tarkesh Pande ,  Anand G. Dabak

IPC分类号： H04B3/54

CPC分类号： H04L1/0003 ,  H04B3/542 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04L1/0009

摘要： Systems and methods for adaptive modulation and coding with frame size adjustment are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include identifying a temporal region of a cyclostationary noise over which a frame is to be sent across a PLC network, the cyclostationary noise having a plurality of temporal regions, each of the plurality of temporal regions having a distinct spectral shape. The method may also include applying a given one of a plurality of Modulation and Coding Schemes (MCSs) to the frame to produce a modulated frame, wherein the given one of the plurality of MCSs is selected based, least in part, upon the spectral shape corresponding to the identified temporal region. The method may further include transmitting the modulated frame across the PLC network, at least in part, over the identified temporal region.

摘要翻译： 描述了具有帧大小调整的自适应调制和编码的系统和方法。 在各种实现中，这些系统和方法可以适用于电力线通信（PLC）。 例如，一种方法可以包括识别通过PLC网络发送帧的周期平稳噪声的时间区域，所述周期平稳噪声具有多个时间区域，所述多个时间区域中的每一个具有不同的频谱形状 。 该方法还可以包括将多个调制和编码方案（MCS）中给定的一个应用于帧以产生调制帧，其中至少部分地基于频谱形状选择多个MCS中的给定一个MCS 对应于所识别的时间区域。 该方法可以进一步包括至少部分地通过所识别的时间区域在PLC网络之间传输调制帧。