公开(公告)号：US08364186B2

公开(公告)日：2013-01-29

申请号：US12615499

申请日：2009-11-10

申请人： Anil Agarwal

发明人： Anil Agarwal

IPC分类号： H04Q7/20

CPC分类号： H04B7/18539

摘要： Satellite communications systems, methods, and related devices are described. In one embodiment, a satellite communications system is configured to dynamically allocate bandwidth and frequencies among different beams. Bandwidth request data may be received and compiled from the terminals. The satellite may be configured with different beam coverage areas, and may dynamically allocate bandwidth and particular frequency channels to different beam coverage areas based on the requests. In each of a series of one or more epochs, and according to the bandwidth requests, there may be allocations among carrier groups, traffic classes, and particular terminals. The setup of slot structure and selection of modes for particular terminals is also addressed.

摘要翻译： 描述卫星通信系统，方法和相关设备。 在一个实施例中，卫星通信系统被配置为动态分配不同波束之间的带宽和频率。 带宽请求数据可以从终端接收和编译。 卫星可以配置有不同的波束覆盖区域，并且可以基于请求动态地将带宽和特定频率信道分配给不同的波束覆盖区域。 在一系列一个或多个历元中的每一个中，并且根据带宽请求，可能在载波组，业务类别和特定终端之间存在分配。 还讨论了槽结构的设置和特定终端的模式选择。

公开(公告)号：US08260935B2

公开(公告)日：2012-09-04

申请号：US12019297

申请日：2008-01-24

申请人： Anil Agarwal

发明人： Anil Agarwal

IPC分类号： G06F15/16 ,  G06F11/00 ,  H04J3/16

CPC分类号： H04L1/1841 ,  H04B7/18543 ,  H04L2001/0097

摘要： Systems, methods, and devices for novel error detection and retransmission processes are described. These processes may be implemented on intermediate communication links between two end terminals, wherein the intermediate links are via satellite. Error control mechanisms to detect and retransmit lost or corrupted frames may be implemented at the network layer, or between the network and data link layers. Processes for discovering error control protocol-aware terminals are described. Features of these error control processes may include a configurable delay limit, tailored to traffic type or class.

摘要翻译： 描述了用于新颖的错误检测和重传过程的系统，方法和设备。 这些过程可以在两个终端之间的中间通信链路上实现，其中中间链路经由卫星。 用于检测和重传丢失或损坏的帧的错误控制机制可以在网络层或网络和数据链路层之间实现。 描述用于发现错误控制协议感知终端的过程。 这些错误控制过程的特征可以包括根据流量类型或类别而定制的可配置延迟限制。

公开(公告)号：US20120019335A1

公开(公告)日：2012-01-26

申请号：US12887789

申请日：2010-09-22

申请人： Dinhphuoc V. Hoang ,  Guohao Zhang ,  Anil Agarwal

发明人： Dinhphuoc V. Hoang ,  Guohao Zhang ,  Anil Agarwal

IPC分类号： H01P5/18

CPC分类号： H01P5/184

摘要： A self-compensated strip-coupled directional coupler. In one example, the self-compensated directional coupler includes a main arm formed in a single first layer of a multi-layer substrate, and a coupled arm formed in a single second layer of the multi-layer substrate. One of the coupled arm and the main arm includes a zigzag structure to compensate for misalignment between the first and second layers that can occur during manufacturing.

摘要翻译： 自补偿条形耦合定向耦合器。 在一个示例中，自补偿定向耦合器包括形成在多层衬底的单个第一层中的主臂和形成在多层衬底的单个第二层中的耦合臂。 耦合臂和主臂中的一个包括Z字形结构以补偿在制造期间可能发生的第一和第二层之间的未对准。

公开(公告)号：US20100329176A1

公开(公告)日：2010-12-30

申请号：US11882647

申请日：2007-08-03

申请人： Anil Agarwal ,  Mark Miller

发明人： Anil Agarwal ,  Mark Miller

IPC分类号： H04W40/00

CPC分类号： H04L1/0003 ,  H04L1/0009 ,  H04L1/0016

摘要： A communication system transmitting signals over a network using a transmission waveform in which a plurality of data packets are transmitted in a payload field of a transmission frame, the system includes a transmitter, which has a transmitting portion that sends information including user data in the data packets and a user data rate portion that dynamically changes the data rate of the user data to the highest rate possible for current link conditions by changing the waveform. The communication system also includes a receiver, which has a receiving portion that receives the information data packets and a reconfiguration portion that reconfigures the receiving portion based on the waveform parameters.

摘要翻译： 一种通过网络使用传输波形传输信号的通信系统，其中在传输帧的有效载荷字段中发送多个数据分组，所述系统包括发射机，发射机具有发送包括数据中的用户数据的信息的发射部分 分组和用户数据速率部分，其通过改变波形来动态地将用户数据的数据速率改变为可能的当前链路条件的最高速率。 通信系统还包括接收机，其具有接收信息数据分组的接收部分和基于波形参数重新配置接收部分的重新配置部分。

公开(公告)号：US20100322149A1

公开(公告)日：2010-12-23

申请号：US12817297

申请日：2010-06-17

申请人： Anil Agarwal

发明人： Anil Agarwal

IPC分类号： H04B7/185

CPC分类号： H04B7/18582 ,  H04L1/0003 ,  H04L1/0009 ,  H04L2001/0093

摘要： Systems, methods, devices, and processors are described for packet clustering and frame formation in ACM systems. A stream of packets may be received at a gateway. During each cycle, a group of packets from the stream may be fetched according to QoS parameters. The group of packets may be clustered according to modcode to produce a packet list. In some embodiments, packets may be arranged and grouped according to transport steam identifier and modcode to produce a packet list. The packet lists may be clustered sequentially from lower order modcode to higher order modcode. Various frame packing techniques are also described.

摘要翻译： 描述了用于ACM系统中的分组聚类和帧形成的系统，方法，设备和处理器。 可以在网关处接收分组流。 在每个周期期间，可以根据QoS参数获取来自流的一组分组。 该组分组可以根据modcode进行聚类以产生分组列表。 在一些实施例中，可以根据传输蒸汽标识符和模式码来分组和分组，以产生分组列表。 分组列表可以从低阶modcode顺序聚类到高阶modcode。 还描述了各种帧打包技术。

公开(公告)号：US20100118765A1

公开(公告)日：2010-05-13

申请号：US12615491

申请日：2009-11-10

申请人： Anil Agarwal

发明人： Anil Agarwal

IPC分类号： H04B7/185

CPC分类号： H04B7/18539

摘要： Satellite communications systems, methods, and related devices are described. In one embodiment, a satellite communications system is configured to dynamically allocate bandwidth and frequencies among different beams. Bandwidth request data may be received and compiled from the terminals. The satellite may be configured with different beam coverage areas, and may dynamically allocate bandwidth and particular frequency channels to different beam coverage areas based on the requests. In each of a series of one or more epochs, and according to the bandwidth requests, there may be allocations among carrier groups, traffic classes, and particular terminals. The setup of slot structure and selection of modes for particular terminals is also addressed.

摘要翻译： 描述卫星通信系统，方法和相关设备。 在一个实施例中，卫星通信系统被配置为动态分配不同波束之间的带宽和频率。 带宽请求数据可以从终端接收和编译。 卫星可以配置有不同的波束覆盖区域，并且可以基于请求动态地将带宽和特定频率信道分配给不同的波束覆盖区域。 在一系列一个或多个历元中的每一个中，并且根据带宽请求，可能在载波组，业务类别和特定终端之间存在分配。 还讨论了槽结构的设置和特定终端的模式选择。

公开(公告)号：US20100118764A1

公开(公告)日：2010-05-13

申请号：US12615488

申请日：2009-11-10

申请人： Anil Agarwal

发明人： Anil Agarwal

IPC分类号： H04B7/185

CPC分类号： H04B7/18539

摘要： Satellite communications systems, methods, and related devices are described. In one embodiment, a satellite communications system is configured to dynamically allocate bandwidth and frequencies among different beams. Bandwidth request data may be received and compiled from the terminals. The satellite may be configured with different beam coverage areas, and may dynamically allocate bandwidth and particular frequency channels to different beam coverage areas based on the requests. In each of a series of one or more epochs, and according to the bandwidth requests, there may be allocations among carrier groups, traffic classes, and particular terminals. The setup of slot structure and selection of modes for particular terminals is also addressed.

摘要翻译： 描述卫星通信系统，方法和相关设备。 在一个实施例中，卫星通信系统被配置为动态分配不同波束之间的带宽和频率。 带宽请求数据可以从终端接收和编译。 卫星可以配置有不同的波束覆盖区域，并且可以基于请求动态地将带宽和特定频率信道分配给不同的波束覆盖区域。 在一系列一个或多个历元中的每一个中，并且根据带宽请求，可能在载波组，业务类别和特定终端之间存在分配。 还讨论了槽结构的设置和特定终端的模式选择。

公开(公告)号：US20080005564A1

公开(公告)日：2008-01-03

申请号：US11478639

申请日：2006-07-03

申请人： Anil Agarwal

发明人： Anil Agarwal

IPC分类号： H04L9/00

CPC分类号： H04L9/0841 ,  H04L9/0822 ,  H04L9/12 ,  H04L2209/60

摘要： A method of managing a key for encrypted communication over a communication link between first and second modems, each modem having respective first and second master keys. A first key material for the first modem is transmitted to the second modem in an encrypted message using the first master key, via a time divided frame over the link. Upon receipt, a second key material is generated at the second modem and is sent to the first modem. Then, at each of the first and second modems, session keys are generated based on the key materials, preferably using a hashing algorithm. An encryptor at the first modem and a decryptor at the second modem are programmed with an identified key and a session key. Encryption is enabled at the first modem and information is transmitted in encrypted frames using the identified key. The second modem receives and decrypts the encrypted frames when frames with the identified key are received.

摘要翻译： 一种通过第一和第二调制解调器之间的通信链路管理用于加密通信的密钥的方法，每个调制解调器具有相应的第一和第二主密钥。 第一调制解调器的第一密钥材料通过链路上的时间分割帧使用第一主密钥在加密消息中被发送到第二调制解调器。 在接收时，在第二调制解调器处产生第二密钥材料并将其发送到第一调制解调器。 然后，在第一和第二调制解调器的每一个处，基于密钥材料生成会话密钥，优选地使用散列算法。 在第一调制解调器处的加密器和第二调制解调器处的解密器用识别的密钥和会话密钥进行编程。 在第一调制解调器处启用加密，并且使用所识别的密钥以加密帧传输信息。 当接收到具有识别的密钥的帧时，第二调制解调器接收并解密加密的帧。

公开(公告)号：US20050122925A1

公开(公告)日：2005-06-09

申请号：US10967291

申请日：2004-10-19

申请人： Dattakumar Chitre ,  Anil Agarwal ,  Prabhakar Gowrisankaran ,  John Lunsford ,  Sathyanarayanan Narayanaswamy

发明人： Dattakumar Chitre ,  Anil Agarwal ,  Prabhakar Gowrisankaran ,  John Lunsford ,  Sathyanarayanan Narayanaswamy

IPC分类号： H03M7/30 ,  H03M13/15 ,  H03M13/23 ,  H03M13/27 ,  H03M13/29 ,  H03M13/35 ,  H04B7/185 ,  H04J3/06 ,  H04L1/00 ,  H04L5/02 ,  H04L5/06 ,  H04L7/04 ,  H04L12/56 ,  H04Q11/04 ,  H04B7/212

CPC分类号： H04L1/0057 ,  H03M7/30 ,  H03M13/15 ,  H03M13/23 ,  H03M13/27 ,  H03M13/29 ,  H03M13/35 ,  H03M13/6312 ,  H04B7/18532 ,  H04B7/1858 ,  H04B7/18582 ,  H04J3/0608 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0041 ,  H04L1/0054 ,  H04L1/0071 ,  H04L1/0072 ,  H04L1/0083 ,  H04L5/023 ,  H04L5/06 ,  H04L7/048 ,  H04L12/5601 ,  H04L2012/5607 ,  H04L2012/5608 ,  H04L2012/5616 ,  H04L2012/5627 ,  H04L2012/5632 ,  H04L2012/5647 ,  H04L2012/5649 ,  H04L2012/5652 ,  H04L2012/5662 ,  H04L2012/5675 ,  H04Q11/0478

摘要： In an asynchronous transfer mode (ATM) system, an apparatus is used to improve the transmission and reception of encoded ATM information over a wireless link having an encoder for encoding the information, assembling the information into a frame format and interleaving of the information for transmission over the wireless link. In addition, the apparatus also has a decoder for decoding information received via the wireless link which was encoded by a similar apparatus transmitting the information over the wireless link. Further, methods utilized by the encoder and decoder to improve transmission include increasing the bandwidth efficiency by dropping a header byte from every ATM cell; assembling separate header and payload frames; utilizing and rearranging idle/unassigned cells in the payload frame for storing and, thereby, increasing error correction code in the frame; dynamically changing the coding of frame in real time from one payload frame to optimize utilization of the mumber of available idle/unassigned cells occurring in each frame; restoring the positions of all idle/unassigned cells to their original position at a receiving end in order to leave the Cell Delay Variation unaffected; interleaving the frames to reduce burst errors during transmission; preservation of overhead parity bits present in the original frames received from a wireline link; cell Header error detection and correction through the use of a generated syndrome; and a synchronization pattern detection method during decoding.

摘要翻译： 在异步传输模式（ATM）系统中，一种装置用于通过具有用于编码信息的编码器的无线链路来改进编码的ATM信息的发送和接收，将信息组合成帧格式和用于传输的信息的交织 通过无线链路。 此外，该装置还具有用于解码由经由无线链路发送信息的类似装置编码的经由无线链路接收的信息的解码器。 此外，编码器和解码器用于改进传输的方法包括通过从每个ATM信元丢弃报头字节来提高带宽效率; 组装单独的报头和有效载荷帧; 利用和重新排列有效载荷帧中的空闲/未分配小区用于存储，从而增加帧中的纠错码; 从一个有效载荷帧动态地改变帧的编码，以优化每帧中发生的可用空闲/未分配小区的数量的利用; 在接收端将所有空闲/未分配小区的位置恢复到其原始位置，以便不影响小区延迟变化; 交织帧以减少传输期间的突发错误; 保存从有线链路接收的原始帧中存在的开销奇偶校验位; 通过使用产生的综合征的细胞头部错误检测和校正; 以及解码期间的同步模式检测方法。