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1. 发明授权

US07570656B2 Channel access method for powerline carrier based media access control protocol 失效
标题翻译：基于电力线载波的媒体接入控制协议的信道接入方法
公开(公告)号：US07570656B2
公开(公告)日：2009-08-04
申请号：US09883589
申请日：2001-06-18
申请人： Dan Raphaeli , Mordechai Mushkin , Ronen Gazit , Yael Kacen , Amir Erez
发明人： Dan Raphaeli , Mordechai Mushkin , Ronen Gazit , Yael Kacen , Amir Erez
IPC分类号： H04L12/413
CPC分类号： H04B3/58 , H04B3/542 , H04B2203/5408 , H04L1/0002 , H04L1/0007 , H04L1/0021 , H04L1/16 , H04L1/18 , H04L1/1848 , H04L12/413 , H04L2001/0093 , H04W74/08 , H04W76/10
摘要： A novel and useful media access control (MAC) protocol that is intended for use over noisy shared media channels. The MAC protocol provides layer 2 functionality over a network using a shared medium including a backoff mechanism for CSMA/CA channel access, link addressing that reduces the overhead of long MAC addresses, a flooding scheme having controlled exposure for broadcast transmissions, multicast transmissions using selective ACKs, implementation of traffic prioritization using an adaptive backoff scheme, a second layer repeater establishment process and multi-packet transport for short packets and fragmentation for long packet transport.
摘要翻译：一种旨在在嘈杂的共享媒体频道上使用的新颖有用的媒体访问控制（MAC）协议。 MAC协议通过使用包括用于CSMA / CA信道访问的退避机制的共享介质，减少长MAC地址的开销的链路寻址，具有用于广播传输的受控曝光的洪泛方案，使用选择性的多播传输来提供第2层功能 ACK，使用自适应退避方案的流量优先化的实现，用于短分组传输的短分组和分段的第二层中继器建立过程和多分组传输。

2. 发明授权

US07463709B2 Method and apparatus for generating a synchronization sequence in a spread spectrum communications transceiver 失效
标题翻译：用于在扩展频谱通信收发器中产生同步序列的方法和装置
公开(公告)号：US07463709B2
公开(公告)日：2008-12-09
申请号：US10829532
申请日：2004-04-21
申请人： Dan Raphaeli , Oren Kaufman , Evgeny Bassin , Boris Zarud
发明人： Dan Raphaeli , Oren Kaufman , Evgeny Bassin , Boris Zarud
IPC分类号： H04I7/00
CPC分类号： H04B1/7075 , H04B1/70755 , H04B1/7095 , H04B2201/70715
摘要： A novel and useful acquisition and synchronization mechanism for spread spectrum communication systems whereby a synchronization sequence comprising a plurality of known symbols spaced apart by predefined time delay intervals is transmitted as the start of packet signal. At the transmitter, a synchronization sequence is transmitted at the beginning of each packet. A synchronization sequence is generated which includes a plurality of symbols with predefined time gaps between each of the symbols. Multiple synchronization sequences may be generated wherein each sequence comprises a unique set of time delays or gaps between each of the symbols. Each set of unique time delays or gaps between symbols of a sequence is stored as a synchronization sequence gap template in memory. When required to generate a synchronization sequence, the sequence generator outputs the plurality of synchronization symbols and inserts a specific time delay between each of the symbols in accordance with the contents of the gap template for the particular synchronization sequence.
摘要翻译：一种用于扩频通信系统的新型有用的采集和同步机制，由此发送包括以预定义的时间延迟间隔间隔开的多个已知符号的同步序列作为分组信号的开始。在发射机处，在每个分组的开始处发送同步序列。产生包括在每个符号之间具有预定时间间隙的多个符号的同步序列。可以生成多个同步序列，其中每个序列包括唯一的一组时间延迟或每个符号之间的间隙。每一组唯一的时间延迟或序列的符号之间的间隙作为同步序列间隙模板存储在存储器中。当需要产生同步序列时，序列生成器输出多个同步符号，并根据特定同步序列的间隙模板的内容在每个符号之间插入特定的时间延迟。

3. 发明授权

US07020784B2 Mechanism for detecting intrusion and jamming attempts in a shared media based communications network 失效
标题翻译：在基于共享媒体的通信网络中检测入侵和干扰尝试的机制
公开(公告)号：US07020784B2
公开(公告)日：2006-03-28
申请号：US09933060
申请日：2001-08-20
申请人： Dan Raphaeli , Evgeny Bassin , Mordechai Mushkin , Oren Kaufman , Tanya Rosing
发明人： Dan Raphaeli , Evgeny Bassin , Mordechai Mushkin , Oren Kaufman , Tanya Rosing
IPC分类号： H04L9/00
CPC分类号： H04L63/1416
摘要： A novel and useful mechanism for detecting intrusion and jamming attempts by an imposter node. A time window defined as an emergency window is reserved after the end of a packet and before an acknowledgement window. Nodes that detect the presence of an intruder transmit an emergency packet during the emergency time window to inform the receive node that the packet it received was sent from an imposter node. Attempts to jam the transmission of the emergency packet from the victim node to the receive node are detected by listening during the emergency window time period for carrier signal that indicates that an emergency packet is trying to be sent. An emergency packet request message is sent by the receive node in response which causes the victim node to resend the emergency packet.
摘要翻译：一种新颖有用的机制，用于检测冒号节点的入侵和干扰尝试。定义为紧急窗口的时间窗口在分组结束之后和确认窗口之前被保留。检测入侵者的存在的节点在紧急时间窗口期间发送紧急分组，以通知接收节点其接收到的分组是从冒号节点发送的。在紧急窗口期间，通过在紧急窗口时段期间通过监听来指示紧急分组正在试图发送，来检测紧急分组从受害节点到接收节点的传输的尝试。响应中由接收节点发送紧急分组请求消息，导致受害者节点重新发送紧急分组。

4. 发明授权

US06888819B1 Media access control utilizing synchronization signaling 失效
标题翻译：媒体访问控制利用同步信令
公开(公告)号：US06888819B1
公开(公告)日：2005-05-03
申请号：US09679330
申请日：2000-10-04
申请人： Mordechai Mushkin , Dan Raphaeli
发明人： Mordechai Mushkin , Dan Raphaeli
IPC分类号： H04J3/06 , H04L7/04 , H04L12/28 , H04L12/413 , G06F1/12 , H04L12/43
CPC分类号： H04W56/00 , H04J3/0652 , H04L7/041 , H04L12/413 , H04L2007/047 , H04W74/08
摘要： A novel media access control (MAC) mechanism utilizing synchronization signaling that enables nodes from different networks having different technologies and protocols to coexistence using the same shared media. The present invention is suitable for use with a wide range of different types of network and technologies and is particularly useful in providing coexistence capabilities to powerline based data communication systems. Specific time slots are assigned for the transmission of a frame occupation signal to indicate to all nodes that the channel is occupied. A synchronization signal is randomly transmitted during a preassigned time slot within the frame to provide accurate timing for the frame occupation signal. During times that a node does not transmit the synchronization signal, it listens to the channel. A timing signal is derived from the synchronization signals received from other nodes during this quiet period wherein the node is in a listening mode. The node then adjusts its internal clock in accordance with the derived timing signal.
摘要翻译：一种利用同步信令的新颖的媒体访问控制（MAC）机制，其使得具有不同技术和协议的不同网络的节点能够使用相同的共享介质来共存。本发明适用于广泛的不同类型的网络和技术，并且在为基于电力线的数据通信系统提供共存能力方面特别有用。分配特定时隙用于发送帧占用信号，以向所有节点指示信道被占用。在帧内的预分配时隙期间随机地发送同步信号，以为帧占用信号提供准确的定时。在节点不发送同步信号的时间期间，它监听信道。定时信号从在其中节点处于监听模式的安静时段期间从其他节点接收的同步信号导出。然后，节点根据导出的定时信号调整其内部时钟。

5. 发明授权

US06937648B2 Equalizer for communication over noisy channels 失效
标题翻译：用于在嘈杂频道上进行通信的均衡器
公开(公告)号：US06937648B2
公开(公告)日：2005-08-30
申请号：US09825268
申请日：2001-04-03
申请人： Dan Raphaeli
发明人： Dan Raphaeli
IPC分类号： H04L25/02 , H04L25/03 , H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04L25/03012 , H04L25/0236 , H04L2025/03401 , H04L2025/03605
摘要： An apparatus for and a method of iterative equalization for communication over noisy channels suitable for use with a wide range of different types of communications systems and channels that is particularly applicable to power line based communication systems. Equalization of received symbols is achieved by iteratively removing the influence of previous symbols dispersed due to channel ISI. Equalization is performed using iterative subtraction in combination with calculations based on the inverse of the transfer matrix. The impulse response of previous symbols is subtracted out to yield the impulse response of the received symbol. The estimate of the current symbol {tilde over (B)}n is then calculated by passing the modified received symbol through a matched filer which functions to remove the effect of channel ISI from the symbol. Multiple iterations are performed to improve the accuracy of the resultant symbol decision.
摘要翻译：用于通过适合于与特别适用于基于电力线的通信系统的各种不同类型的通信系统和信道一起使用的噪声信道的通信的迭代均衡的装置和方法。通过迭代地消除由于信道ISI而分散的先前符号的影响，实现接收符号的均衡。使用迭代减法与基于传输矩阵的逆的计算结合进行均衡。减去先前符号的脉冲响应以产生接收符号的脉冲响应。然后通过将经修改的接收符号通过匹配的文件管理程序来计算当前符号B N n N的估计，该匹配的文件管理器用于从符号中去除信道ISI的影响。执行多次迭代以提高所得符号判定的准确性。

6. 发明授权

US06907472B2 Distributed synchronization mechanism for shared communications media based networks 失效
标题翻译：基于共享通信媒体的网络的分布式同步机制
公开(公告)号：US06907472B2
公开(公告)日：2005-06-14
申请号：US09822939
申请日：2001-03-30
申请人： Mordechai Mushkin , Dan Raphaeli , Jacob Vainappel
发明人： Mordechai Mushkin , Dan Raphaeli , Jacob Vainappel
IPC分类号： H04B3/54 , H04J3/06 , H04L7/00 , H04L12/403 , G06F15/16 , G06F11/00
CPC分类号： H04L12/403 , H04B3/54 , H04B2203/5408 , H04B2203/5416 , H04J3/0638 , H04J3/0641 , H04L7/0004
摘要： A novel and useful distributed synchronization mechanism. The synchronization loop of each station on the shared media based network considers only synchronization signals received having a time phase earlier than the time phase of its internal clock. From among the plurality of synchronization signals received by a given station having a time phase earlier than that of its internal clock, only the earliest of the received synchronization signals is considered. This allows the use of a second order synchronization tracking loop wherein both the phase and rate of the internal clock are tracked and adjusted. The station with the fastest internal clock effectively functions as an ad-hoc synchronization master for all stations in a given maximum connected group.
摘要翻译：一种新颖有用的分布式同步机制。基于共享媒体的网络上的每个站的同步环路仅考虑接收到的同步信号，该同步信号具有比其内部时钟的时间相位早的时间相位。由具有比其内部时钟早的时间相位的给定站所接收的多个同步信号之中，只考虑最早接收的同步信号。这允许使用二阶同步跟踪环路，其中跟踪和调整内部时钟的相位和速率。具有最快内部时钟的电台有效地用作给定最大连接组中所有电台的自组织同步主机。

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