公开(公告)号：WO2009155006A3

公开(公告)日：2009-12-23

申请号：PCT/US2009/045349

申请日：2009-05-27

Applicant: VIASAT, INC . ,  LEE, Fred

Inventor： LEE, Fred

IPC: H04L29/02 ,  H04L7/00

Abstract: A fault tolerant modem system is provided according to some embodiments of the invention. A modem can include modulators and/or demodulators that provide redundancy in the event one of the modulators and/or demodulators fail. Connectivity between modulators and demodulators, for example, can be used to propagate TDMA timing to connected modulators and/or demodulators. Moreover, redundancy can be provided using modulators and/or demodulators with three or more input/output ports.

公开(公告)号：WO2009134900A2

公开(公告)日：2009-11-05

申请号：PCT/US2009/042133

申请日：2009-04-29

Applicant: VIASAT, INC. ,  HART, Steven, R.

Inventor： HART, Steven, R.

IPC: H04L12/22 ,  H04L12/24 ,  G06F21/00 ,  G06F15/16

CPC classification number: H04L63/1416 ,  H04L43/00 ,  H04L63/0218 ,  H04L63/0428 ,  H04L63/123 ,  H04L63/1441 ,  H04L2463/144

Abstract: Systems and methods for combating and thwarting attacks by cybercriminals are provided. Network security appliances interposed between computer systems and public networks, such as the Internet, are configured to perform defensive and/or offensive actions against botnets and/or other cyber threats. According to some embodiments, network security appliances may be configured to perform coordinated defensive and/or offensive actions with other network security appliances.

Abstract translation: 提供了打击和挫败网络犯罪分子袭击的系统和方法。 介于计算机系统和公共网络（例如因特网）之间的网络安全设备被配置为对僵尸网络和/或其他网络威胁进行防御性和/或攻击性行为。 根据一些实施例，网络安全设备可以被配置为与其他网络安全设备执行协调的防御性和/或攻击性动作。

公开(公告)号：WO2009099953A1

公开(公告)日：2009-08-13

申请号：PCT/US2009/032672

申请日：2009-01-30

Applicant: VIASAT, INC. ,  SAUNDERS, David R.

Inventor： SAUNDERS, David R.

IPC: G01S7/40 ,  H03C3/09

CPC classification number: G01S7/032 ,  G01S7/4008 ,  H03L7/099 ,  H03L7/10 ,  H03L2207/06

Abstract: In an exemplary embodiment, a free running VCO has two modes: a normal operating mode and a calibration mode. In the calibration mode, the free running VCO is phase lock looped with itself instead of a calibration VCO. Furthermore, in an exemplary embodiment, a tuning voltage for the free running VCO is adjusted to offset any tuning error. In addition, in various embodiments a reference crystal oscillator used in the phase lock loop is located on a DSP module instead of on the RF module. In yet another exemplary embodiment, the free running VCO is the only high frequency VCO on a radio frequency module.

Abstract translation: 在示例性实施例中，自由运行的VCO具有两种模式：正常操作模式和校准模式。 在校准模式下，自由运行的VCO是自锁的，而不是校准VCO。 此外，在示例性实施例中，调整用于自由运行的VCO的调谐电压以抵消任何调谐误差。 此外，在各种实施例中，在锁相环中使用的参考晶体振荡器位于DSP模块而不是RF模块上。 在另一示例性实施例中，自由运行的VCO是射频模块上唯一的高频VCO。

公开(公告)号：WO2009045963A1

公开(公告)日：2009-04-09

申请号：PCT/US2008/078161

申请日：2008-09-29

Applicant: VIASAT, INC. ,  HEPBURN, Matthew Ian

Inventor： HEPBURN, Matthew Ian

IPC: H04L29/06 ,  H04L12/22

CPC classification number: H04L63/0281 ,  H04L63/166 ,  H04L63/20

Abstract: The present invention relates to systems, apparatus, and methods of securely transmitting data between a client and a server. The method includes receiving an initial security message from the client. The security message is to establish security between the server and the client. Further, the client's security parameters are set to enabled and not required. The method further includes forwarding the initial security message to the server and intercepting a security response from the server. The response includes security data and security parameters set to enabled and required. The method includes extracting the security data from the security response, and using the security data to establish a secure socket connection between the proxy server and the server. Furthermore, the method alters the request by changing the security parameters to not enabled and not required, and transmits the altered request and establishes a non-secure socket connection.

Abstract translation: 本发明涉及在客户机和服务器之间安全地传输数据的系统，装置和方法。 该方法包括从客户端接收初始安全消息。 安全消息是在服务器和客户端之间建立安全性。 此外，客户端的安全参数设置为启用而不是必需。 该方法还包括将初始安全消息转发到服务器并拦截来自服务器的安全响应。 响应包括设置为启用和必需的安全数据和安全参数。 该方法包括从安全响应中提取安全数据，并使用安全数据建立代理服务器与服务器之间的安全套接字连接。 此外，该方法通过将安全参数改变为不启用而不需要来改变请求，并发送改变的请求并建立非安全套接字连接。

公开(公告)号：WO2008092023A3

公开(公告)日：2009-03-19

申请号：PCT/US2008051941

申请日：2008-01-24

Applicant: VIASAT INC ,  AGARWAL ANIL

Inventor： AGARWAL ANIL

IPC: H04L1/18 ,  H04L1/00

CPC classification number: H04L1/1841 ,  H04B7/18543 ,  H04L2001/0097

Abstract: 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.

Abstract translation: 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：WO2008154513A1

公开(公告)日：2008-12-18

申请号：PCT/US2008/066361

申请日：2008-06-09

Applicant: VIASAT, INC. ,  BECKER, Donald, W. ,  IRVINE, David

Inventor： BECKER, Donald, W. ,  IRVINE, David

IPC: H04L12/56

CPC classification number: H04W74/02 ,  H04W76/10

Abstract: Methods and apparatuses are presented for communicating using a shared communication medium. A request is sent over the shared communication medium. The shared communication medium is organized to include a request signal space and a scheduled transmission signal space. The request signal space includes a plurality of request segments each having a different location within the request signal space. The scheduled transmission signal space includes a plurality of scheduled transmission segments each having a different location within the scheduled transmission signal space. The request occupies more than one request segment. Each of the more than one request segments is randomly selected by the first node. An assignment is received assigning the request to a transmission opportunity in the scheduled transmission signal space. The assignment is made in response to detecting at least one of the more than one request segments. A data transmission is sent using the assigned transmission opportunity.

Abstract translation: 呈现用于使用共享通信介质进行通信的方法和装置。 通过共享通信介质发送请求。 共享通信介质被组织为包括请求信号空间和调度的传输信号空间。 请求信号空间包括多个请求段，每个请求段在请求信号空间内具有不同的位置。 调度的传输信号空间包括多个调度的传输段，每个调度的传输段在调度的传输信号空间内具有不同的位置。 请求占用多个请求段。 第一个节点随机选择多个请求片段中的每一个。 接收到在调度的传输信号空间中将请求分配给传输机会的分配。 响应于检测多于一个请求段中的至少一个而进行分配。 使用分配的传输机会发送数据传输。

公开(公告)号：WO2008116075A1

公开(公告)日：2008-09-25

申请号：PCT/US2008/057672

申请日：2008-03-20

Applicant: VIASAT, INC. ,  MILLER, Mark, J.

Inventor： MILLER, Mark, J.

IPC: H04Q7/20

CPC classification number: H04B7/18515 ,  H04B7/18523 ,  H04B7/2041

Abstract: Techniques for providing broadcast services on spot beam satellite are provided. These techniques enable the mission of a spot beam satellite system to be changed from providing spot beam transmission to broadcast transmissions, and vice versa, without requiring that the satellite be reconfigured. Broadcast data may be encoded and transmitted concurrently on a plurality of spot beams. According to some embodiments, the broadcast data may be encoded using a space-time code and/or forward error corrected (FEC) encoded to enable a receiver to correct errors in the signal received from the spot beam satellite.

Abstract translation: 提供了用于在点波束卫星上提供广播服务的技术。 这些技术使点波束卫星系统的任务能够从提供点波束传输改变为广播传输，反之亦然，而不需要重新配置卫星。 可以在多个点波束上同时编码和发送广播数据。 根据一些实施例，广播数据可以使用编码的时空码和/或前向纠错（FEC）进行编码，以使得接收机能够校正从点波束卫星接收的信号中的错误。

公开(公告)号：WO2008100341A2

公开(公告)日：2008-08-21

申请号：PCT/US2007/079541

申请日：2007-09-26

Applicant: VIASAT, INC. ,  THESLING, William, H.

Inventor： THESLING, William, H.

CPC classification number: H04B7/18582

Abstract: Systems, methods, and devices are described for scheduling and mapping upstream communications in a satellite communications system. The disclosure includes various channelization and frequency hopping techniques. A gateway is described to perform novel allocation of time slots on upstream frequency channels to allow frequency hopping. A subscriber terminal may perform frequency hopping according to the allocation, and the range may be limited to the transition range of a digitally controlled oscillator unit at the subscriber terminal. A gateway is described to allocate time slots on different upstream frequency channels in a prioritized manner. Subscriber terminals may receive the allocation, and then control the assignment of their upstream traffic to the time slots.

Abstract translation: 描述了用于调度和映射卫星通信系统中的上行通信的系统，方法和设备。 本公开包括各种信道化和跳频技术。 网关被描述为在上行频道上执行时隙的新颖分配以允许跳频。 用户终端可以根据分配来执行跳频，并且该范围可以被限制在用户终端处的数字控制的振荡器单元的转换范围。 网关被描述为以优先方式在不同的上行频道上分配时隙。 用户终端可以接收分配，然后控制其上行流量到时隙的分配。

公开(公告)号：WO2008098063A1

公开(公告)日：2008-08-14

申请号：PCT/US2008/053199

申请日：2008-02-06

Applicant: VIASAT, INC. ,  BECKER, Donald, W.

Inventor： BECKER, Donald, W.

IPC: H04B7/185

CPC classification number: H04B7/18582 ,  H04W72/1273 ,  H04W72/1284 ,  H04W84/06

Abstract: Methods and apparatuses are presented for conducting communications over a shared communication medium involving (a) sending a request from a first node, the shared communication medium organized to include (i) a request signal space including a plurality of request segments each having a different location within the request signal space and (ii) a scheduled transmission signal space including a plurality of scheduled transmission segments each having a different location within the scheduled transmission signal space, the request sent in a request segment, (b) obtaining an assignment associating the request with a scheduled transmission segment, the assignment taking into account location of the request, (c) from the first node, sending a data transmission in the scheduled transmission segment associated with the request, and (d) wherein the assignment is made remotely at a second node in response to the request as received at the second node, and a corresponding assignment message is communicated to the first node.

Abstract translation: 提出了用于通过共享通信介质进行通信的方法和装置，其涉及（a）发送来自第一节点的请求，所述共享通信介质被组织为包括（i）包括多个请求段的请求信号空间，每个请求段具有不同的位置 在所述请求信号空间内，以及（ii）包括多个调度的传输段的调度传输信号空间，每个调度的传输段在调度的传输信号空间内具有不同的位置，所述请求在请求段中发送，（b）获得将请求关联的分配 具有调度的传输段，所述分配考虑到所述请求的位置，（c）从所述第一节点发送与所述请求相关联的所述调度的传输段中的数据传输，以及（d）其中所述分配在远程处于 第二节点响应于在第二节点处接收的请求，以及相应的分配消息i s传达到第一个节点。

公开(公告)号：WO2008060758A3

公开(公告)日：2008-07-24

申请号：PCT/US2007079569

申请日：2007-09-26

Applicant: VIASAT INC ,  CONNORS DENNIS PATRICK ,  FREIER MATTHEW JOHN ,  DEVEAU JAMES EDWARD ,  WU XIAO ,  JASKA KRISTI ANN

Inventor： CONNORS DENNIS PATRICK ,  FREIER MATTHEW JOHN ,  DEVEAU JAMES EDWARD ,  WU XIAO ,  JASKA KRISTI ANN

IPC: H04B7/185

CPC classification number: H04B7/18582

Abstract: Upstream information at a user terminal in a satellite network is efficiently scheduled through a Demand Assigned Multiple Access (DAMA) algorithm that delays transmission of the first packet's bandwidth allocation request in order to allow subsequent packets to be included in the first packet's bandwidth allocation request (up-front delayed concatenation) in order to minimize delay due to the long round trip time and overhead in packet processing and packet transmission through a hardware queue. Rather than merely the size of the next packet, the size of the entire concatenated frame is communicated to the scheduler, which may be distributed between the user satellite modem and the gateway, to prepare the schedule, where the schedule is the basis of the upstream transmission of the various associated user terminals. Optimal delay is a function of traffic pattern and the scheduling delay including round-trip delay.

Abstract translation: 在卫星网络中的用户终端处的上游信息通过需求分配多址（DAMA）算法被有效地调度，所述需求分配多址（DAMA）算法延迟第一分组的带宽分配请求的传输，以允许后续分组被包括在第一分组的带宽分配请求中 前端延迟级联），以便最小化由于长的往返时间和通过硬件队列的分组处理和分组传输的开销导致的延迟。 而不是仅仅是下一个分组的大小，整个级联帧的大小被传送到调度器，调度器可以分布在用户卫星调制解调器和网关之间来准备调度，其中调度是上游的基础 传输各种相关的用户终端。 最优延迟是业务模式和调度延迟的函数，包括往返延迟。