High speed data service via satellite modem termination system and satellite modems
    1.
    发明授权
    High speed data service via satellite modem termination system and satellite modems 有权
    通过卫星调制解调器终端系统和卫星调制解调器进行高速数据业务

    公开(公告)号:US08718182B2

    公开(公告)日:2014-05-06

    申请号:US12813935

    申请日:2010-06-11

    IPC分类号: H04L27/00 H03C7/00

    CPC分类号: H04B7/18582

    摘要: A satellite communication system includes a satellite earth station operably coupled to a data network, and a plurality of satellite modems, each satellite modem of the plurality of satellite modems communicating in an upstream and downstream data communication mode with the satellite earth station via at least one servicing satellite. The satellite earth station includes a host processor for receiving data packets from the data network and processing DOCSIS management packets, a DOCSIS MAC coupled to the host processor for encrypting the transmit packet data from the host memory, framing data in MAC headers and inserting MAC timestamps in the transmit packet data, a satellite modulator coupled to the DOCSIS MAC for modulating the encrypted transmit packet data to generate downstream output data for transmission to at least one of the plurality of satellite modems, a burst demodulator for demodulating upstream data received from at least one of the plurality of satellite modems, and a turbo decoder coupled to the burst demodulator and the DOCSIS MAC for turbo decoding the demodulated data from the burst demodulator and sending the decoded data to the DOCSIS MAC. The DOCSIS MAC sends DOCSIS management packets portion of the decoded data to the host processor and sends transmit packet data portion of the decoded data to the data network.

    摘要翻译: 卫星通信系统包括可操作地耦合到数据网络的卫星地球站和多个卫星调制解调器,多个卫星调制解调器中的每个卫星调制解调器以上游和下游数据通信模式与卫星地球站通过至少一个 维修卫星。 卫星地球站包括主机处理器,用于从数据网络接收数据分组并处理DOCSIS管理分组,耦合到主机处理器的DOCSIS MAC,用于加密来自主机存储器的发送分组数据,在MAC报头中成帧数据,并插入MAC时间戳 在发送分组数据中,耦合到DOCSIS MAC的卫星调制器,用于调制加密的发送分组数据以产生用于传输到多个卫星调制解调器中的至少一个的下行输出数据,用于解调从至少接收到的上行数据的突发解调器 多个卫星调制解调器中的一个,以及耦合到突发解调器和DOCSIS MAC的turbo解码器,用于对来自突发解调器的解调数据进行turbo解码,并将解码的数据发送到DOCSIS MAC。 DOCSIS MAC将解码数据的DOCSIS管理分组部分发送到主处理器,并将解码数据的发送分组数据部分发送到数据网络。

    High speed data service via satellite modem termination system and satellite modems
    2.
    发明授权
    High speed data service via satellite modem termination system and satellite modems 失效
    通过卫星调制解调器终端系统和卫星调制解调器进行高速数据业务

    公开(公告)号:US07738596B2

    公开(公告)日:2010-06-15

    申请号:US10661648

    申请日:2003-09-12

    CPC分类号: H04B7/18582

    摘要: A satellite communication system includes a satellite earth station operably coupled to a data network, and a plurality of satellite modems, each satellite modem of the plurality of satellite modems communicating in an upstream and downstream data communication mode with the satellite earth station via at least one servicing satellite. The satellite earth station includes a host processor for receiving data packets from the data network and processing DOCSIS management packets, a DOCSIS MAC coupled to the host processor for encrypting the transmit packet data from the host memory, framing data in MAC headers and inserting MAC timestamps in the transmit packet data, a satellite modulator coupled to the DOCSIS MAC for modulating the encrypted transmit packet data to generate downstream output data for transmission to at least one of the plurality of satellite modems, a burst demodulator for demodulating upstream data received from at least one of the plurality of satellite modems, and a turbo decoder coupled to the burst demodulator and the DOCSIS MAC for turbo decoding the demodulated data from the burst demodulator and sending the decoded data to the DOCSIS MAC. The DOCSIS MAC sends DOCSIS management packets portion of the decoded data to the host processor and sends transmit packet data portion of the decoded data to the data network.

    摘要翻译: 卫星通信系统包括可操作地耦合到数据网络的卫星地球站和多个卫星调制解调器,多个卫星调制解调器中的每个卫星调制解调器以上游和下游数据通信模式与卫星地球站通过至少一个 维修卫星。 卫星地球站包括主机处理器,用于从数据网络接收数据分组并处理DOCSIS管理分组,耦合到主机处理器的DOCSIS MAC,用于加密来自主机存储器的发送分组数据,在MAC报头中成帧数据,并插入MAC时间戳 在发送分组数据中,耦合到DOCSIS MAC的卫星调制器,用于调制加密的发送分组数据以产生用于传输到多个卫星调制解调器中的至少一个的下行输出数据,用于解调从至少接收到的上行数据的突发解调器 多个卫星调制解调器中的一个,以及耦合到突发解调器和DOCSIS MAC的turbo解码器,用于对来自突发解调器的解调数据进行turbo解码,并将解码的数据发送到DOCSIS MAC。 DOCSIS MAC将解码数据的DOCSIS管理分组部分发送到主处理器,并将解码数据的发送分组数据部分发送到数据网络。

    Explicit congestion notification for DOCSIS based broadband communication systems
    3.
    发明授权
    Explicit congestion notification for DOCSIS based broadband communication systems 失效
    基于DOCSIS的宽带通信系统的显式拥塞通知

    公开(公告)号:US07606188B2

    公开(公告)日:2009-10-20

    申请号:US11633630

    申请日:2006-12-05

    IPC分类号: H04B7/212

    CPC分类号: H04B7/18523

    摘要: Satellite communications are carried out using the Data Over Cable Interface Specification (DOCSIS). Satellite modems are notified of upstream channel congestion by inserting a congestion notification message in a medium access protocol (MAP) message for the upstream channel. Specifically, the congestion notification message is inserted in an unused field of the MAP message, such as the explicit congestion notification (ECN) field. The MAP message can also carry other characteristics of the upstream channel, including priority threshold, multicast access burst availability, and available bandwidth.

    摘要翻译: 卫星通信使用数据通过电缆接口规范(DOCSIS)进行。 通过在上游信道的媒体接入协议(MAP)消息中插入拥塞通知消息,向卫星调制解调器通知上行信道拥塞。 具体地说,将拥塞通知消息插入MAP消息的未使用字段中,例如显式拥塞通知(ECN)字段。 MAP消息还可以携带上行信道的其他特性,包括优先权阈值,组播接入突发可用性和可用带宽。

    Upstream adaptive modulation in a communications system
    4.
    发明申请
    Upstream adaptive modulation in a communications system 有权
    通信系统中的上行自适应调制

    公开(公告)号:US20090028187A1

    公开(公告)日:2009-01-29

    申请号:US12219504

    申请日:2008-07-23

    IPC分类号: H04J3/22

    CPC分类号: H04B7/18513

    摘要: A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly.

    摘要翻译: 一种用于提供上行自适应调制的系统和方法。 定义与数据间隔使用代码(IUC)的范围相关联的突发参数。 每个数据IUC具有不同的调制阶数和前向纠错(FEC)。 监测网络中每个卫星调制解调器的SNR和码字错误率。 基于SNR和/或码字错误率,数据IUC被动态地分配给上游信道内的不同卫星调制解调器,以使上游信道中的每个卫星调制解调器能够在上行数据传输期间实现最大带宽效率。 带宽请求从卫星调制解调器接收并被授权。 授权包括分配的数据IUC。 在上游信道中接收的数据突发信号都使用来自所分配的IUC的参数来处理,每个卫星调制解调器在上行信道中发送数据。 当任何卫星调制解调器的SNR和/或码字错误率改变时,该卫星调制解调器的数据IUC相应地改变。

    Method and system for downstream time stamp in an adaptive modulation based satellite modem termination system
    5.
    发明申请
    Method and system for downstream time stamp in an adaptive modulation based satellite modem termination system 有权
    基于自适应调制的卫星调制解调器终端系统中下行时间戳的方法和系统

    公开(公告)号:US20050229217A1

    公开(公告)日:2005-10-13

    申请号:US11091902

    申请日:2005-03-29

    IPC分类号: H04N7/20

    摘要: Provided are a method and system for determining system time in a satellite based cable data communication system. The system includes a satellite modem termination system configured to transmit data frames to a receiver in a predetermined symbol rate. Each frame includes a corresponding number of symbols and has a time stamp (i) indicative of the frame's time of transmission and (ii) positioned within the frame at a location common to all of the frames. The method includes receiving at least two consecutively transmitted data frames within the receiver and registering the time stamp of the first received data frame within the receiver to produce a first time stamp. Also, the time stamp of the second received data frame is registered within the receiver to produce a second time stamp. The time of transmission of the second transmitted data frame is updated, wherein the updating is a function of the first time stamp, the second time stamp, the corresponding number of symbols, and the symbol rate.

    摘要翻译: 提供了一种用于确定基于卫星的有线数据通信系统中的系统时间的方法和系统。 该系统包括配置成以预定符号率向接收机发送数据帧的卫星调制解调器终端系统。 每个帧包括相应数量的符号,并且具有指示帧的传输时间的时间戳(i)和(ii)在帧内定位在所有帧共同的位置。 该方法包括在接收器内接收至少两个连续发送的数据帧,并且在接收器内登记第一接收数据帧的时间标记以产生第一时间戳。 此外,第二接收数据帧的时间戳被记录在接收机内以产生第二时间戳。 更新发送第二发送数据帧的时间,其中更新是第一时间戳,第二时间戳,对应的符号数和符号率的函数。

    Method and system for efficient packing of data across queue blocks in a satellite
    6.
    发明申请
    Method and system for efficient packing of data across queue blocks in a satellite 有权
    方法和系统,用于有效地打包卫星队列中的数据

    公开(公告)号:US20050229216A1

    公开(公告)日:2005-10-13

    申请号:US11091900

    申请日:2005-03-29

    IPC分类号: H04N7/20

    摘要: Provided are a method and system for processing at least two consecutive MPEG Q-blocks in a communications system, one of the Q-blocks being low rate and the other being high rate. The method includes back-filling an empty portion in a first transmitted Q-block with a first portion of second type data, the remaining portion of data of the second type data being included in another Q-block prior to transmission. The second type data crosses a boundary between the first and the other Q-block when the actual number is less than a corresponding maximum number. Finally, the method includes receiving within an associated subscriber modem one of the first and the second type data and not receiving the other of the first and the second type data when the second type data crosses the boundary.

    摘要翻译: 提供了一种用于在通信系统中处理至少两个连续MPEG Q块的方法和系统,其中一个Q块是低速率,另一个是高速率。 该方法包括用第二类型数据的第一部分填充第一传输Q块中的空白部分,第二类型数据的剩余部分在传输之前被包括在另一Q块中。 当实际数量小于对应的最大数量时,第二类型数据跨越第一和另外Q块之间的边界。 最后,该方法包括:当第二类型数据跨越边界时,在相关联的用户调制解调器中接收第一类型数据和第二类型数据之一,并且不接收第一和第二类型数据中的另一种。

    Upstream adaptive modulation in a communications system
    7.
    发明授权
    Upstream adaptive modulation in a communications system 失效
    通信系统中的上行自适应调制

    公开(公告)号:US08773986B2

    公开(公告)日:2014-07-08

    申请号:US12980137

    申请日:2010-12-28

    CPC分类号: H04B7/18513

    摘要: A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly.

    摘要翻译: 一种用于提供上行自适应调制的系统和方法。 定义与数据间隔使用代码(IUC)的范围相关联的突发参数。 每个数据IUC具有不同的调制阶数和前向纠错(FEC)。 监测网络中每个卫星调制解调器的SNR和码字错误率。 基于SNR和/或码字错误率,数据IUC被动态地分配给上游信道内的不同卫星调制解调器,以使上游信道中的每个卫星调制解调器能够在上行数据传输期间实现最大带宽效率。 带宽请求从卫星调制解调器接收并被授权。 授权包括分配的数据IUC。 在上游信道中接收的数据突发信号都使用来自所分配的IUC的参数来处理,每个卫星调制解调器在上行信道中发送数据。 当任何卫星调制解调器的SNR和/或码字错误率改变时,该卫星调制解调器的数据IUC相应地改变。

    Turbo-coding DOCSIS information for satellite communications
    9.
    发明授权
    Turbo-coding DOCSIS information for satellite communications 有权
    用于卫星通信的Turbo编码DOCSIS信息

    公开(公告)号:US08010882B2

    公开(公告)日:2011-08-30

    申请号:US12754460

    申请日:2010-04-05

    IPC分类号: H03M13/03

    摘要: Methods and systems for modifying DOCSIS-based transmission paths for communication in higher frequency and/or wireless environments, such as wireless terrestrial communication systems and satellite communication systems. An inner turbo-code is combined with a DOCSIS based Reed-Solomon (“RS”) forward error correction (“FEC”) coding scheme, to produce a concatenated turbo-RS code (other FEC codes can be utilized). In phase and quadrature phase (“I-Q”) processing is utilized to enable relatively low cost up-converter implementations. The I-Q processing is preferably performed at baseband, essentially pre-compensating for analog variations in the transmit path. Power amplifier on/off control capable of controlling on/off RF power control of remote transmitters is modulated on a transmit cable to reduce the need for a separate cable.

    摘要翻译: 用于修改在诸如无线地面通信系统和卫星通信系统的较高频率和/或无线环境中进行通信的基于DOCSIS的传输路径的方法和系统。 内部turbo码与基于DOCSIS的Reed-Solomon(“RS”)前向纠错(“FEC”)编码方案组合,以产生级联的turbo-RS码(可以利用其他FEC码)。 使用同相和正交相位(“I-Q”)处理来实现相对低成本的上变频器实现。 优选地,在基带处执行I-Q处理,基本上对发送路径中的模拟变化进行预补偿。 功率放大器开/关控制能够控制远程发射机的开/关射频功率控制在发射电缆上进行调制,以减少对单独电缆的需要。

    Turbo-Coding DOCSIS Information for Satellite Communications
    10.
    发明申请
    Turbo-Coding DOCSIS Information for Satellite Communications 有权
    Turbo编码DOCSIS卫星通信信息

    公开(公告)号:US20100262895A1

    公开(公告)日:2010-10-14

    申请号:US12754460

    申请日:2010-04-05

    IPC分类号: H03M13/03

    摘要: Methods and systems for modifying DOCSIS-based transmission paths for communication in higher frequency and/or wireless environments, such as wireless terrestrial communication systems and satellite communication systems. An inner turbo-code is combined with a DOCSIS based Reed-Solomon (“RS”) forward error correction (“FEC”) coding scheme, to produce a concatenated turbo-RS code (other FEC codes can be utilized). In phase and quadrature phase (“I-Q”) processing is utilized to enable relatively low cost up-converter implementations. The I-Q processing is preferably performed at baseband, essentially pre-compensating for analog variations in the transmit path. Power amplifier on/off control capable of controlling on/off RF power control of remote transmitters is modulated on a transmit cable to reduce the need for a separate cable.

    摘要翻译: 用于修改在诸如无线地面通信系统和卫星通信系统的较高频率和/或无线环境中进行通信的基于DOCSIS的传输路径的方法和系统。 内部turbo码与基于DOCSIS的Reed-Solomon(“RS”)前向纠错(“FEC”)编码方案组合,以产生级联的turbo-RS码(可以利用其他FEC码)。 使用同相和正交相位(“I-Q”)处理来实现相对低成本的上变频器实现。 优选地,在基带处执行I-Q处理,基本上对发送路径中的模拟变化进行预补偿。 功率放大器开/关控制能够控制远程发射机的开/关射频功率控制在发射电缆上进行调制,以减少对单独电缆的需要。