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1. 发明授权

US08347062B2 Interleaver memory allocation method and apparatus 有权
标题翻译：交织器内存分配方法和装置
公开(公告)号：US08347062B2
公开(公告)日：2013-01-01
申请号：US12650653
申请日：2009-12-31
申请人： Umashankar Thyagarajan
发明人： Umashankar Thyagarajan
IPC分类号： G06F12/00
CPC分类号： H04L1/0001 , H04L1/0015 , H04L1/0071
摘要： A first communication device estimates upstream channel conditions for an upstream channel and determines an upstream memory requirement for a first buffer at a second communication device and a first buffer at the first communication device based on the upstream channel conditions. A downstream memory requirement is received from the second communication device for a second buffer at the first communication device and a second buffer at the second communication device based on downstream channel conditions estimated at the second communication device for a downstream channel. The first communication device determines whether the sum of the upstream and downstream memory requirements exceeds an available amount of memory for implementing the first and second buffers at the first communication device and revises at least one of the memory requirements if the sum of the upstream and downstream memory requirements is different than the available amount of memory.
摘要翻译：第一通信设备估计上游信道的上行信道条件，并且基于上行信道条件确定在第二通信设备处的第一缓冲器和第一通信设备处的第一缓冲器的上行存储器需求。基于第二通信设备在第一通信设备处接收第二通信设备的下游存储器需求，并且基于在第二通信设备为下行信道估计的下行信道条件，在第二通信设备处接收第二缓冲器。第一通信设备确定上游和下游存储器要求的总和是否超过用于在第一通信设备上实现第一和第二缓冲器的可用量的存储器，并且如果上游和下游的总和，则修改存储器需求中的至少一个内存要求与可用内存量不同。

2. 发明授权

US08223628B2 Data transmission method, transmitter, receiver, transceiver and transmission system 有权
标题翻译：数据传输方式，发射机，接收机，收发机和传输系统
公开(公告)号：US08223628B2
公开(公告)日：2012-07-17
申请号：US11651923
申请日：2007-01-10
申请人： Umashankar Thyagarajan
发明人： Umashankar Thyagarajan
IPC分类号： G01R31/08 , H04L12/28 , G08C25/02
CPC分类号： H04L1/0071 , H04L1/0057 , H04L1/006 , H04L1/1874 , H04L27/2601
摘要： A method of transmitting data includes generating interleaved data. The method also includes converting the interleaved data into a modulated signal, and transmitting the modulated signal. The interleaved data is also stored, for example, in a buffer. The method further includes determining whether a retransmission of the modulated signal is required, and retransmitting the interleaved data based on a result of that determination.
摘要翻译：一种发送数据的方法包括产生交错数据。该方法还包括将交织的数据转换成调制信号，并发送调制信号。交织数据也存储在例如缓冲器中。该方法还包括确定是否需要调制信号的重传，以及基于该确定的结果来重传交织的数据。

3. 发明授权

US08179915B2 System and method for transmitting and retransmitting data 有权
标题翻译：用于发送和重发数据的系统和方法
公开(公告)号：US08179915B2
公开(公告)日：2012-05-15
申请号：US11770001
申请日：2007-06-28
申请人： Michael Horvat , Umashankar Thyagarajan
发明人： Michael Horvat , Umashankar Thyagarajan
IPC分类号： H04J3/16
CPC分类号： H04L1/1887 , H04L1/0041 , H04L1/0057 , H04L1/0071 , H04L1/1874
摘要： A method of transmitting data includes storing a first set of transmission data and a first set of retransmission data. A first ratio of transmission data to retransmission data is determined. A plurality of transmission data units is generated with each data unit including a portion of transmission data from the first set of transmission data and a portion of retransmission data from the first set of retransmission data in accordance with the first ratio. The plurality of transmission data units is transmitted.
摘要翻译：发送数据的方法包括存储第一组发送数据和第一组重发数据。确定发送数据与重发数据的第一比率。产生多个发送数据单元，每个数据单元包括来自第一组发送数据的发送数据的一部分和来自第一组重发数据的重发数据的一部分，根据第一比率。发送多个发送数据单元。

4. 发明授权

US07801076B2 Allocation of signal-to-noise ratio margin in multi-carrier systems 有权
标题翻译：多载波系统中信噪比裕度的分配
公开(公告)号：US07801076B2
公开(公告)日：2010-09-21
申请号：US11803538
申请日：2007-05-15
申请人： Umashankar Thyagarajan , Frenzel Rudi , Bernd Heise , Axel Clausen
发明人： Umashankar Thyagarajan , Frenzel Rudi , Bernd Heise , Axel Clausen
IPC分类号： H04W4/00
CPC分类号： H04L5/0046 , H04L5/0007 , H04L5/006 , H04L5/0064
摘要： Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin.
摘要翻译：描述了在多载波系统中将不同信噪比裕度分配给不同载波的情况。优选实施例包括向多载波系统中的载波分配信噪比（SNR）余量，包括基于第一服务特性向第一数据服务分配第一SNR余量，将第二SNR余量分配给第二信号基于第二服务特性的数据服务，使用第一信噪比容限发送与第一数据服务相关联的数据，以及使用第二信噪比容限发送与第二数据服务相关联的数据。

5. 发明申请

US20090003376A1 SYSTEM AND METHOD FOR TRANSMITTING AND RETRANSMITTING DATA 有权
标题翻译：用于发送和重新发送数据的系统和方法
公开(公告)号：US20090003376A1
公开(公告)日：2009-01-01
申请号：US11770001
申请日：2007-06-28
申请人： Michael Horvat , Umashankar Thyagarajan
发明人： Michael Horvat , Umashankar Thyagarajan
IPC分类号： H04J15/00
CPC分类号： H04L1/1887 , H04L1/0041 , H04L1/0057 , H04L1/0071 , H04L1/1874
摘要： A method of transmitting data includes storing a first set of transmission data and a first set of retransmission data. A first ratio of transmission data to retransmission data is determined. A plurality of transmission data units is generated with each data unit including a portion of transmission data from the first set of transmission data and a portion of retransmission data from the first set of retransmission data in accordance with the first ratio. The plurality of transmission data units is transmitted.
摘要翻译：发送数据的方法包括存储第一组发送数据和第一组重发数据。确定发送数据与重发数据的第一比率。产生多个发送数据单元，每个数据单元包括来自第一组发送数据的发送数据的一部分和来自第一组重发数据的重发数据的一部分，根据第一比率。发送多个发送数据单元。

6. 发明授权

US08630249B2 Allocation of signal-to-noise ratio margin in multi-carrier systems 有权
标题翻译：多载波系统中信噪比裕度的分配
公开(公告)号：US08630249B2
公开(公告)日：2014-01-14
申请号：US13447332
申请日：2012-04-16
申请人： Umashankar Thyagarajan , Frenzel Rudi , Bernd Heise , Axel Clausen
发明人： Umashankar Thyagarajan , Frenzel Rudi , Bernd Heise , Axel Clausen
IPC分类号： H04W4/00
CPC分类号： H04L5/0046 , H04L5/0007 , H04L5/006 , H04L5/0064
摘要： Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin.
摘要翻译：描述了在多载波系统中将不同信噪比裕度分配给不同载波的情况。优选实施例包括向多载波系统中的载波分配信噪比（SNR）余量，包括基于第一服务特性向第一数据服务分配第一SNR余量，将第二SNR余量分配给第二信号基于第二服务特性的数据服务，使用第一信噪比容限发送与第一数据服务相关联的数据，以及使用第二信噪比容限发送与第二数据服务相关联的数据。

7. 发明申请

US20100254444A1 Methods of Implementing Low-Power Mode for DSL Modems 有权
标题翻译：实现DSL调制解调器低功耗模式的方法
公开(公告)号：US20100254444A1
公开(公告)日：2010-10-07
申请号：US12748489
申请日：2010-03-29
申请人： Axel Clausen , Umashankar Thyagarajan , Thomas Zettler
发明人： Axel Clausen , Umashankar Thyagarajan , Thomas Zettler
IPC分类号： H04B1/38
CPC分类号： H04M11/062 , H04L5/0042 , H04L5/1438 , H04W52/42
摘要： According to an embodiment, a DSL transceiver is set in a low power mode and moved out of the low power mode responsive to the DSL transceiver receiving data. Data is transmitted only on a first group of sub-carriers when moving the DSL transceiver out of the low power mode, the first group of sub-carriers being a subset of the sub-carriers available to the DSL transceiver for transmission.
摘要翻译：根据实施例，响应于DSL收发器接收数据，DSL收发器被设置为低功率模式并且移出低功率模式。当将DSL收发器移出低功率模式时，数据仅在第一组子载波上传输，第一组子载波是DSL收发器可用于传输的副载波的子集。

8. 发明申请

US20100023711A1 Interleaver Memory Allocation Method and Apparatus 有权
标题翻译：交织器内存分配方法和装置
公开(公告)号：US20100023711A1
公开(公告)日：2010-01-28
申请号：US12181010
申请日：2008-07-28
申请人： Umashankar Thyagarajan
发明人： Umashankar Thyagarajan
IPC分类号： G06F12/02
CPC分类号： H04L1/0042 , H04L1/0009 , H04L1/0071
摘要： According to one embodiment, memory is allocated between an interleaver buffer and a de-interleaver buffer in a communication device based on downstream and upstream memory requirements. The upstream de-interleaver memory requirement is determined based on upstream channel conditions obtained for a communication channel used by the communication device. The memory is allocated between the interleaver and de-interleaver buffers based on the downstream and upstream memory requirements. The downstream interleaver memory requirement may be determined based on one or more predetermined downstream configuration parameters. Alternatively, the downstream interleaver memory requirement may also be determined based on the upstream channel conditions by estimating the downstream capacity of the communication channel based on the upstream channel conditions and determining an interleaver buffer size that satisfies one or more predetermined downstream configuration parameters and the downstream capacity estimate.
摘要翻译：根据一个实施例，基于下游和上游存储器需求，在通信设备中的交织器缓冲器和去交织器缓冲器之间分配存储器。基于由通信设备使用的通信信道获得的上行信道条件来确定上行解交织器存储器需求。基于下游和上游存储器需求，在交织器和解交织器缓冲器之间分配存储器。可以基于一个或多个预定的下游配置参数来确定下游交织器存储器需求。或者，还可以基于上游信道条件，通过基于上行信道条件估计通信信道的下行容量并确定满足一个或多个预定下游配置参数的交织器缓冲器大小，以及下游交织器存储器要求容量估计。

9. 发明申请

US20090089641A1 RETRANSMISSION SCHEME FOR COMMUNICATION SYSTEMS 有权
标题翻译：通信系统的重新设计方案
公开(公告)号：US20090089641A1
公开(公告)日：2009-04-02
申请号：US12244037
申请日：2008-10-02
申请人： Gert Schedelbeck , Dietmar Schoppmeier , Bernd Heise , Umashankar Thyagarajan
发明人： Gert Schedelbeck , Dietmar Schoppmeier , Bernd Heise , Umashankar Thyagarajan
IPC分类号： H04L1/18
CPC分类号： H04L1/1874 , H04L1/0083 , H04L1/1621 , H04L1/1812 , H04L1/1838 , H04L1/1877 , H04L69/324 , H04L69/40 , H04L2001/0098
摘要： One embodiment relates to a method of communicating data between a transmitter and a receiver of a communication system. In this method, a payload data stream is received from a network interface layer. The payload data stream includes data units eligible for retransmission and data units non-eligible for retransmission. These data units are grouped into containers, where a container is associated with a container identifier that distinguishes the container from other containers. The containers are grouped into data transmission units, where a data transmission unit includes at least one container along with redundancy information that facilitates error detection for that data transmission unit. The data transmission units are transmitted to the receiver as a transmission data stream. Other methods and systems are also disclosed.
摘要翻译：一个实施例涉及在通信系统的发射机和接收机之间传送数据的方法。在该方法中，从网络接口层接收有效载荷数据流。有效载荷数据流包括符合重传的数据单元和不符合重传的数据单元。这些数据单元被分组成容器，其中容器与将容器与其他容器区分开的容器标识符相关联。容器被分组成数据传输单元，其中数据传输单元包括至少一个容器以及有助于该数据传输单元的错误检测的冗余信息。数据传输单元作为传输数据流被传送到接收机。还公开了其它方法和系统。

10. 发明申请

US20080165804A1 Data transmission method, transmitter, receiver, transceiver and transmission system 有权
标题翻译：数据传输方式，发射机，接收机，收发机和传输系统
公开(公告)号：US20080165804A1
公开(公告)日：2008-07-10
申请号：US11651923
申请日：2007-01-10
申请人： Umashankar Thyagarajan
发明人： Umashankar Thyagarajan
IPC分类号： H04J3/24 , G06F12/00
CPC分类号： H04L1/0071 , H04L1/0057 , H04L1/006 , H04L1/1874 , H04L27/2601
摘要： A method of transmitting data includes generating interleaved data. The method also includes converting the interleaved data into a modulated signal, and transmitting the modulated signal. The interleaved data is also stored, for example, in a buffer. The method further includes determining whether a retransmission of the modulated signal is required, and retransmitting the interleaved data based on a result of that determination.
摘要翻译：一种发送数据的方法包括产生交错数据。该方法还包括将交织的数据转换成调制信号，并发送调制信号。交织数据也存储在例如缓冲器中。该方法还包括确定是否需要调制信号的重传，以及基于该确定的结果来重传交织的数据。

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