公开(公告)号：US20120207198A1

公开(公告)日：2012-08-16

申请号：US13451104

申请日：2012-04-19

申请人： Donald W. Becker ,  Matthew D. Nimon ,  William H. Thesling

发明人： Donald W. Becker ,  Matthew D. Nimon ,  William H. Thesling

IPC分类号： H04L7/02 ,  H04B17/00 ,  H04L27/00 ,  H04L27/06

CPC分类号： H04L7/0029 ,  H04B7/18513

摘要： Symbol timing acquisition is described for a wireless broadband signal received at a user terminal from a gateway via a satellite. In-phase and quadrature channels of the wireless signal may each be sampled at a rate of one sample per symbol. The samples may be interpolated to generate an early interpolation and a late interpolation for each of the samples. A difference measurement is obtained between the early interpolation and the late interpolation for a set of the samples. A number of the difference measurements may be averaged, and symbol timing may be modified based on the average. This process may be continued on an iterative basis to acquire symbol timing.

摘要翻译： 描述了用于通过卫星从网关在用户终端接收的无线宽带信号的符号定时获取。 无线信号的同相和正交信道可以以每个符号一个样本的速率进行采样。 可以对样本进行插值，以生成每个样本的早期插值和后期插值。 在一组样本的早期插值和后期插值之间获得差异度量。 可以对多个差分测量进行平均，并且可以基于平均值来修改符号定时。 该过程可以在迭代的基础上继续以获取符号定时。

公开(公告)号：US08031711B2

公开(公告)日：2011-10-04

申请号：US11771910

申请日：2007-06-29

申请人： Donald W. Becker

发明人： Donald W. Becker

IPC分类号： H04L12/28

CPC分类号： H04B7/18582 ,  H04W72/1273 ,  H04W72/1284 ,  H04W84/06

摘要： 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 within the request signal space, and (c) from the first node, sending a data transmission in the scheduled transmission segment associated with the request in accordance with the assignment.

摘要翻译： 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信号空间内的请求的位置，以及（c）从所述第一节点根据所述分配在与所述请求相关联的所述调度的传输段中发送数据传输。

公开(公告)号：US07953060B2

公开(公告)日：2011-05-31

申请号：US12134637

申请日：2008-06-06

申请人： David Irvine ,  Donald W. Becker

发明人： David Irvine ,  Donald W. Becker

IPC分类号： H04B7/216

CPC分类号： H04J13/007 ,  H04W74/00 ,  H04W74/002

摘要： Methods and apparatuses are presented for communicating using a shared communication medium. A request is sent in a request signal space where the request represents a code sequence that is a member of a set of code sequences. Each member is characterized by an autocorrelation function that has a peak centered at zero time offset. Each member is further characterized by a cross correlation function. The cross correlation function has a low correlation window having a width and surrounding a zero time offset. An assignment is received that assigns the request to a transmission opportunity in a scheduled transmission signal space. The assignment is made in response to detecting the code sequence from receiving multiple requests having relative timing offsets less than the width of the low correlation window. A data transmission is sent using the assigned transmission opportunity in the scheduled transmission signal space.

摘要翻译： 呈现用于使用共享通信介质进行通信的方法和装置。 在请求信号空间中发送请求，其中请求表示作为一组代码序列的成员的代码序列。 每个成员的特征在于具有以零时间偏移为中心的峰值的自相关函数。 每个成员的特征还包括互相关函数。 互相关函数具有具有宽度并且包围零时间偏移的低相关窗口。 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。 响应于从接收到具有小于低相关窗口的宽度的相对定时偏移的多个请求的检测到代码序列而进行分配。 在调度的传输信号空间中使用分配的传输机会发送数据传输。

公开(公告)号：US07822010B2

公开(公告)日：2010-10-26

申请号：US11771926

申请日：2007-06-29

申请人： Donald W. Becker

发明人： Donald W. Becker

IPC分类号： H04B7/212 ,  H04B7/00 ,  H04L12/28

CPC分类号： H04B7/18582 ,  H04W72/1273 ,  H04W72/1284 ,  H04W84/06

摘要： 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, (c) from the first node, sending a data transmission in the scheduled transmission segment associated with the request, and (d) wherein a collection of request segments in the plurality of request segments is separated by a guard zone from an adjacent collection of scheduled transmission segments in the plurality of scheduled transmission segments.

摘要翻译： 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 （c）从所述第一节点发送与所述请求相关联的所述调度传输段中的数据传输，以及（d）其中所述多个请求段中的请求段的集合由保护区域分隔 来自多个调度传输段中的相邻的调度传输段的集合 意思

公开(公告)号：US20080187002A1

公开(公告)日：2008-08-07

申请号：US11771840

申请日：2007-06-29

申请人： Donald W. Becker

发明人： Donald W. Becker

IPC分类号： H04J3/16

CPC分类号： H04B7/18582 ,  H04W72/1273 ,  H04W72/1284 ,  H04W84/06

摘要： Methods and apparatuses are presented for conducting communications over a shared communication medium involving a plurality of nodes, involving (a) sending a request from a first node, the shared communication medium organized to include a request signal space and a scheduled transmission signal space, the request signal space including request segments each having a different location within the request signal space, the scheduled transmission signal space including 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, taking into account location of the request within the request signal space, (c) from the first node, sending a data transmission in the scheduled transmission segment associated with the request, and (d) wherein the plurality of scheduled transmission segments include multiple categories of scheduled transmission segments associated with different service types.

摘要翻译： 呈现用于通过涉及多个节点的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，被组织为包括请求信号空间的共享通信介质和调度的传输信号空间， 请求信号空间，其包括在请求信号空间内具有不同位置的请求段，所述调度的传输信号空间包括每个在调度的传输信号空间内具有不同位置的调度的传输段，在请求段中发送的请求，（b）获得 考虑到请求信号空间内的请求的位置，（c）从第一节点，在与该请求相关联的调度的传输段中发送数据传输，将请求与调度的传输段相关联，以及（d） 其中所述多个调度传输段包括多个类 与不同服务类型相关联的调度传输段的缺陷。

公开(公告)号：US20080186856A1

公开(公告)日：2008-08-07

申请号：US11771856

申请日：2007-06-29

申请人： Donald W. Becker

发明人： Donald W. Becker

IPC分类号： G08C15/06

CPC分类号： H04B7/18582 ,  H04W72/1273 ,  H04W72/1284 ,  H04W84/06

摘要： 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 request segments each having a different location within the request signal space and (ii) a scheduled transmission signal space including 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, in a first tier of assignments, associating the request with a scheduled transmission segment, (c) from the first node, sending a data transmission in the scheduled transmission segment associated with the request, and (d) the plurality of scheduled transmission segments including at least one default use segment available for use by a default entity if the at least one default use segment is not assigned in the first tier of assignments.

摘要翻译： 呈现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）包括请求信号空间，所述请求信号空间包括每个具有不同位置的请求段 请求信号空间和（ii）包括在调度的传输信号空间内各自具有不同位置的调度传输段的调度传输信号空间，在请求段中发送的请求，（b）在第一层分配中获得分配， 将所述请求与调度的传输段相关联，（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）所述多个调度的传输段包括至少一个可用于 如果至少一个默认使用段未在第一层的assig中分配，则由默认实体使用 nments。

公开(公告)号：US5612975A

公开(公告)日：1997-03-18

申请号：US260889

申请日：1994-06-16

申请人： Donald W. Becker ,  Thomas R. Bilotta

发明人： Donald W. Becker ,  Thomas R. Bilotta

IPC分类号： H04L27/38 ,  H04L7/00 ,  H04L7/02 ,  H04L7/033 ,  H04L27/22 ,  H04L25/06

CPC分类号： H04L7/0029

摘要： A digital receiver includes a tuner and a demodulator that obtains a modulated signal carried in a received analog signal. A digital-to-analog converter operates at a preselected fixed sampling rate on the modulated signal to produce a first sequence of digitized samples. The first sequence of digitized samples is processed by a digital rotator to frequency-and phase-correct the first sequence of digitized samples. A controllable digital filter processes the first sequence to produce a filter output including a second sequence of digitized samples at a symbol rate. The second sequence is processed to ascertain a symbol rate of the modulated signal. The controllable filter coefficients are automatically varied to accommodate changes in the symbol rate of the modulated signal, so that the sampling rate of the digital-to-analog converter need not change. The second sequence is processed by post detection automatic gain control to produce a receiver output including a sequence of scaled and leveled digitized samples at the symbol rate.

摘要翻译： 数字接收机包括调谐器和解调器，其获得在接收的模拟信号中承载的调制信号。 数模转换器在调制信号上以预选的固定采样速率工作，以产生第一序列的数字化采样。 数字化样本的第一序列由数字旋转器处理以对第一数字化样本序列进行频率和相位校正。 可控数字滤波器处理第一序列以产生包括符号速率的第二数字化采样序列的滤波器输出。 处理第二个序列以确定调制信号的符号率。 可控滤波器系数自动变化以适应调制信号的符号率的变化，使得数模转换器的采样率不需要改变。 第二个序列通过后置检测自动增益控制进行处理，以产生一个接收机输出，该接收机输出包括符号速率下的缩放和调平的数字化采样序列。

公开(公告)号：US08401038B2

公开(公告)日：2013-03-19

申请号：US12486587

申请日：2009-06-17

申请人： Donald W. Becker ,  Matthew D. Nimon ,  William H. Thesling

发明人： Donald W. Becker ,  Matthew D. Nimon ,  William H. Thesling

IPC分类号： H04J3/00 ,  H04J3/02 ,  H04B7/00 ,  H04B1/00 ,  H04B1/66 ,  H04L27/22 ,  G06F7/38 ,  B41J29/393 ,  G11C29/00

CPC分类号： H04L7/0016 ,  H04B7/18504

摘要： Systems, devices, processors, and methods are described which may be used for the reception of a wireless broadband signal at a user terminal from a gateway via a satellite. A wireless signal may include a series of physical layer frames, each frame including a physical layer header and payload. The received signal is digitized and processed using various novel physical layer headers and related techniques to synchronize the physical layer frames and recover data from physical layer headers for purposes of demodulation and decoding.

公开(公告)号：US07940790B2

公开(公告)日：2011-05-10

申请号：US12134868

申请日：2008-06-06

申请人： Donald W. Becker ,  David Irvine

发明人： Donald W. Becker ,  David Irvine

IPC分类号： H04L12/28

CPC分类号： H04W74/02 ,  H04W76/10

摘要： 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.

摘要翻译： 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：US20110007647A1

公开(公告)日：2011-01-13

申请号：US12831972

申请日：2010-07-07

申请人： Mark J. Miller ,  Donald W. Becker

发明人： Mark J. Miller ,  Donald W. Becker

IPC分类号： H04L12/26

CPC分类号： H04B7/18586 ,  H04B7/18543 ,  H04W52/146 ,  H04W52/16 ,  H04W52/241

摘要： A method for determining attenuation settings across carriers in a return link bandwidth of a user terminal comprises determining a first attenuation setting for a user terminal at a first transmission frequency, where the first attenuation setting is based on a first signal quality metric value of a first message sent from the user terminal at the first transmission frequency. The method also comprises determining a second attenuation setting for the user terminal at a second transmission frequency, where the second attenuation setting is based on a second signal quality metric value of a second message sent from the user terminal at the second transmission frequency. The method also comprises determining the attenuation settings across the carriers in the return link bandwidth of the user terminal based on the first attenuation setting and the second attenuation setting.

摘要翻译： 用于确定用户终端的返回链路带宽中的载波的衰减设置的方法包括以第一传输频率确定用户终端的第一衰减设置，其中第一衰减设置基于第一衰减设置的第一信号质量度量值 消息以第一传输频率从用户终端发送。 该方法还包括以第二传输频率确定用户终端的第二衰减设置，其中第二衰减设置基于在第二传输频率从用户终端发送的第二消息的第二信号质量度量值。 该方法还包括基于第一衰减设置和第二衰减设置来确定跨越用户终端的返回链路带宽中的载波的衰减设置。