公开(公告)号：US20050053053A1

公开(公告)日：2005-03-10

申请号：US10658053

申请日：2003-09-09

申请人： Mark Smith ,  Shiping Li ,  James Pasco-Anderson

发明人： Mark Smith ,  Shiping Li ,  James Pasco-Anderson

IPC分类号： H04L12/64 ,  H04L12/66

CPC分类号： H04L12/6418

摘要： A gateway apparatus includes multiple network server cards which are synchronized with each other to allow time slot switching of synchronous data across an asynchronous medium between source and destination server cards. The gateway includes synchronization logic and a data adaptation layer which implements a protocol for formatting of synchronous serial data. The data undergoes serial to parallel conversion and is formed into per time slot subpackets which are further packetized along with context and synchronization data. The packet is transmitted through an asynchronous switch after which the packet is disassembled into its constituent subpackets and queued into play-out buffers according to each subpackets' associated context and synchronization data. The apparatus allows synchronous data to be switched from a source time slot to a destination time slot across the asynchronous switch with a known, fixed delay. The gateway apparatus requires only a single asynchronous switch to transmit data between and among both the synchronous and asynchronous domains.

摘要翻译： 网关装置包括彼此同步的多个网络服务器卡，以允许在源服务器卡和目的地服务器卡之间的异步介质上的同步数据的时隙切换。 网关包括同步逻辑和实现用于格式化同步串行数据的协议的数据适配层。 数据经历串行到并行转换，并且形成为每个时隙子分组，其随着上下文和同步数据进一步分组化。 分组通过异步交换机传输，之后分组被拆分成其组成子分组，并根据每个子分组的相关上下文和同步数据排队到播出缓冲器中。 该装置允许同步数据以已知的固定延迟从异常交换机的源时隙切换到目的时隙。 网关设备只需要一个异步交换机来在同步和异步域之间进行数据传输。

公开(公告)号：US06810012B1

公开(公告)日：2004-10-26

申请号：US09440548

申请日：1999-11-15

申请人： Nanying Yin ,  Marty Borden ,  Shiping Li ,  Michael Hluchyj

发明人： Nanying Yin ,  Marty Borden ,  Shiping Li ,  Michael Hluchyj

IPC分类号： H04L1256

CPC分类号： H04L12/5602 ,  H04L47/50

摘要： To determine when to service a cell queue in an ATM network, a cell scheduler can use an ideal service interval time. The ideal service interval time of each cell queue is the reciprocal of the bandwidth assigned to that cell queue. An interval based cell scheduler is then initialized by setting a time reference to zero and setting a next service time for each queue to the queue's ideal service interval. The cell scheduler then enters a repeating loop. During each iteration of the loop, the first nonempty cell queue having the smallest next service time value is selected. The selected queue is serviced and its next service time is updated by adding its ideal service interval. The time reference value is also updated. If all the queues are empty, then an idle time slot is allowed to pass. The cell queues may consists of queue groups. For example, several queues can be gathered into a queue group that assigned a single ideal service time. Within this queue group, each queue may be serviced equally using a fair queuing system.

摘要翻译： 为了确定在ATM网络中何时服务小区队列，小区调度器可以使用理想的服务间隔时间。 每个小区队列的理想服务间隔时间是分配给该小区队列的带宽的倒数。 然后通过将时间参考设置为零并将每个队列的下一个服务时间设置为队列的理想服务间隔来初始化基于间隔的单元调度器。 然后，单元调度器进入重复循环。 在循环的每次迭代期间，选择具有最小的下一个服务时间值的第一非空单元队列。 所选择的队列被服务，并通过添加其理想的服务间隔来更新其下一个服务时间。 时间参考值也被更新。 如果所有队列都为空，则允许空闲时隙通过。 小区队列可能由队列组成。 例如，可以将几个队列收集到分配了单个理想服务时间的队列组中。 在这个队列组中，可以使用公平的排队系统对每个队列进行同等的服务。

公开(公告)号：US07586925B2

公开(公告)日：2009-09-08

申请号：US10658352

申请日：2003-09-09

申请人： Mark Smith ,  Shiping Li ,  James Pasco-Anderson

发明人： Mark Smith ,  Shiping Li ,  James Pasco-Anderson

IPC分类号： H04L12/28

CPC分类号： H04J3/0685

摘要： A gateway apparatus includes multiple network server cards which are synchronized with each other to allow time slot switching of synchronous data across an asynchronous medium between source and destination server cards. The gateway includes synchronization logic and a data adaptation layer which implements a protocol for formatting of synchronous serial data. The data undergoes serial to parallel conversion and is formed into per time slot subpackets which are further packetized along with context and synchronization data. The packet is transmitted through an asynchronous switch after which the packet is disassembled into its constituent subpackets and queued into play-out buffers according to each subpackets' associated context and synchronization data. The apparatus allows synchronous data to be switched from a source time slot to a destination time slot across the asynchronous switch with a known, fixed delay. The gateway apparatus requires only a single asynchronous switch to transmit data between and among both the synchronous and asynchronous domains.

摘要翻译： 网关装置包括彼此同步的多个网络服务器卡，以允许在源服务器卡和目的地服务器卡之间的异步介质上的同步数据的时隙切换。 网关包括同步逻辑和实现用于格式化同步串行数据的协议的数据适配层。 数据经历串行到并行转换，并且形成为每个时隙子分组，其随着上下文和同步数据进一步分组化。 分组通过异步交换机传输，之后分组被拆分成其组成子分组，并根据每个子分组的相关上下文和同步数据排队到播出缓冲器中。 该装置允许同步数据以已知的固定延迟从异常交换机的源时隙切换到目的时隙。 网关设备只需要一个异步交换机来在同步和异步域之间进行数据传输。

公开(公告)号：US20050053028A1

公开(公告)日：2005-03-10

申请号：US10658352

申请日：2003-09-09

申请人： Mark Smith ,  Shiping Li ,  James Pasco-Anderson

发明人： Mark Smith ,  Shiping Li ,  James Pasco-Anderson

IPC分类号： H04B7/212 ,  H04J3/06

CPC分类号： H04J3/0685

摘要： A gateway apparatus includes multiple network server cards which are synchronized with each other to allow time slot switching of synchronous data across an asynchronous medium between source and destination server cards. The gateway includes synchronization logic and a data adaptation layer which implements a protocol for formatting of synchronous serial data. The data undergoes serial to parallel conversion and is formed into per time slot subpackets which are further packetized along with context and synchronization data. The packet is transmitted through an asynchronous switch after which the packet is disassembled into its constituent subpackets and queued into play-out buffers according to each subpackets' associated context and synchronization data. The apparatus allows synchronous data to be switched from a source time slot to a destination time slot across the asynchronous switch with a known, fixed delay. The gateway apparatus requires only a single asynchronous switch to transmit data between and among both the synchronous and asynchronous domains.

摘要翻译： 网关装置包括彼此同步的多个网络服务器卡，以允许在源服务器卡和目的地服务器卡之间的异步介质上的同步数据的时隙切换。 网关包括同步逻辑和实现用于格式化同步串行数据的协议的数据适配层。 数据经历串行到并行转换，并且形成为每个时隙子分组，其随着上下文和同步数据进一步分组化。 分组通过异步交换机传输，之后分组被拆分成其组成子分组，并根据每个子分组的相关上下文和同步数据排队到播出缓冲器中。 该装置允许同步数据以已知的固定延迟从异常交换机的源时隙切换到目的时隙。 网关设备只需要一个异步交换机来在同步和异步域之间进行数据传输。

公开(公告)号：US6018527A

公开(公告)日：2000-01-25

申请号：US696272

申请日：1996-08-13

申请人： Nanying Yin ,  Marty Borden ,  Shiping Li ,  Michael Hluchyj

发明人： Nanying Yin ,  Marty Borden ,  Shiping Li ,  Michael Hluchyj

IPC分类号： H04L12/56 ,  H04J3/16

CPC分类号： H04L12/5602 ,  H04L12/5693

摘要： To determine when to service a cell queue in an ATM network, a cell scheduler can use an ideal service interval time. The ideal service interval time of each cell queue is the reciprocal of the bandwidth assigned to that cell queue. An interval based cell scheduler is then initialized by setting a time reference to zero and setting a next service time for each queue to the queue's ideal service interval. The cell scheduler then enters a repeating loop. During each iteration of the loop, the first nonempty cell queue having the smallest next service time value is selected. The selected queue is serviced and its next service time is updated by adding its ideal service interval. The time reference value is also updated. If all the queues are empty, then an idle time slot is allowed to pass. The cell queues may consists of queue groups. For example, several queues can be gathered into a queue group that assigned a single ideal service time. Within this queue group, each queue may be serviced equally using a fair queuing system.

摘要翻译： 为了确定在ATM网络中何时服务小区队列，小区调度器可以使用理想的服务间隔时间。 每个小区队列的理想服务间隔时间是分配给该小区队列的带宽的倒数。 然后通过将时间参考设置为零并将每个队列的下一个服务时间设置为队列的理想服务间隔来初始化基于间隔的单元调度器。 然后，单元调度器进入重复循环。 在循环的每次迭代期间，选择具有最小的下一个服务时间值的第一非空单元队列。 所选择的队列被服务，并通过添加其理想的服务间隔来更新其下一个服务时间。 时间参考值也被更新。 如果所有队列都为空，则允许空闲时隙通过。 小区队列可能由队列组成。 例如，可以将几个队列收集到分配了单个理想服务时间的队列组中。 在这个队列组中，可以使用公平的排队系统对每个队列进行同等的服务。

公开(公告)号：US5619516A

公开(公告)日：1997-04-08

申请号：US541168

申请日：1995-10-11

申请人： Shiping Li ,  James A. Pasco-Anderson

发明人： Shiping Li ,  James A. Pasco-Anderson

IPC分类号： H03M13/00 ,  H03M13/09 ,  H04L1/00

CPC分类号： H03M13/091

摘要： A parallel CRC remainder coefficient generator (100) and method (1100) are described for providing efficient error detection in a digital data communication system. This method calculates a K-bit CRC remainder m data bits at a time, where m can be less than, equal to, or greater than K, and where the processing of each of the m bits requires a total of j, K-bit table look-ups into a total of j tables of 2.sup.b entries each, where m=jb. It also requires one m-bit exclusive-or operation, a total of (j-1) K-bit exclusive-or operations, and one (K-m)-bit exclusive-or operation if m

摘要翻译： 描述了一种并行CRC余数系数发生器（100）和方法（1100），用于在数字数据通信系统中提供有效的误差检测。 该方法一次计算K位CRC余数m个数据位，其中m可以小于等于或大于K，并且其中每个m位的处理需要总共j个K位 表查找到每个2b条目的j个表中，其中m = jb。 如果m

公开(公告)号：US06236839B1

公开(公告)日：2001-05-22

申请号：US09464933

申请日：1999-12-16

申请人： Yucong Gu ,  Shiping Li ,  Zhang Ping Yang

发明人： Yucong Gu ,  Shiping Li ,  Zhang Ping Yang

IPC分类号： H04Q720

CPC分类号： H01Q3/267 ,  H04W88/00

摘要： A smart antenna system includes: an antenna array including a plurality of antenna elements, and at least one calibration element; a plurality of transceiver units each having a port coupled with an associated one of the antenna elements, a receive port, and a transmit port; a transceiver calibration unit including a port coupled with the calibration element via a coaxial cable, a receive port, and a transmit port; and signal processing means communicatively coupled with each of the receive ports and the transmit ports of each of the transceiver units, and coupled with the calibration receive port and the calibration transmit port of the calibration unit. A transmitter calibration path associated with each antenna element extends from the transmit port of the associated transceiver unit to the associated antenna element, from the associated antenna element to the calibration element, and from the calibration element to the receive port of the calibration unit. A receiver calibration path associated with each antenna element extends from the transmit port of the calibration unit to the calibration element, from the calibration element to the associated antenna element, and from the associated antenna element to the receive port of the associated transceiver unit. The signal processing means is responsive to transmit mode resultant signals developed as a result of reference signals propagating through associated transmitter calibration paths. The signal processing means is also responsive to receive mode resultant signals developed as a result of reference signals propagating through associated receiver calibration paths.

摘要翻译： 智能天线系统包括：包括多个天线元件的天线阵列和至少一个校准元件; 多个收发器单元，每个收发器单元具有与天线元件中的相关联的一个端口耦合的端口，接收端口和发送端口; 收发器校准单元，包括经由同轴电缆，接收端口和发送端口与校准元件耦合的端口; 以及信号处理装置，其通信地耦合到每个收发器单元的每个接收端口和发送端口，并与校准接收端口和校准单元的校准发送端口耦合。 与每个天线元件相关联的发射器校准路径从相关联的收发器单元的发射端口延伸到相关联的天线元件，从相关联的天线元件到校准元件，以及从校准元件到校准单元的接收端口。 与每个天线元件相关联的接收器校准路径从校准单元的发射端口延伸到校准元件，从校准元件到相关联的天线元件，以及从相关联的天线元件延伸到相关联的收发器单元的接收端口。 信号处理装置响应于作为通过相关联的发射机校准路径传播的参考信号的结果而产生的发射模式结果信号。 信号处理装置还响应于作为通过相关联的接收机校准路径传播的参考信号的结果而产生的接收模式结果信号。

公开(公告)号：US06226275B1

公开(公告)日：2001-05-01

申请号：US09383110

申请日：1999-08-25

申请人： Zhang Ping Yang ,  Shiping Li ,  Yucong Gu

发明人： Zhang Ping Yang ,  Shiping Li ,  Yucong Gu

IPC分类号： H04J300

CPC分类号： H04B1/44 ,  H04B1/56

摘要： A time division duplex switching circuit provides for selectively coupling signals between an antenna and a front stage transceiver circuit. The switching circuit is operative in a transmit mode and in a receive mode, and includes: a transmitter amplifier having an input and an output; a receiver amplifier having an input and an output; a first circulator including a first port coupled for communication with the front stage transceiver, a second port selectively coupled with the output of the receiver amplifier via a first switching, and a third port selectively coupled with the input of the transmitter amplifier via a second switching; and a second circulator including a first port coupled for communication via the antenna, a second port coupled with the input of the receiver amplifier, and a third port coupled with the output of the transmitter amplifier. The second switching is operative in the receive mode to connect the third port of the first circulator to a first load impedance for absorbing energy reflected from the front stage transceiver via the first circulator, and is operative in the transmit mode to connect the third port of the first circulator to the input of the transmitter amplifier. The first switching is operative in the transmit mode to connect the second port of the first circulator to a second load impedance for absorbing energy reflected from the input of the transmitter amplifier via the first circulator, and is operative in the receive mode to connect the second port of the first circulator to the output of the receiver amplifier.

摘要翻译： 时分双工切换电路提供选择性地耦合在天线和前级收发器电路之间的信号。 切换电路在发射模式和接收模式下工作，并且包括：具有输入和输出的发射机放大器; 具有输入和输出的接收机放大器; 第一循环器，包括耦合用于与前级收发器通信的第一端口，经由第一开关选择性地与接收放大器的输出端耦合的第二端口，以及经由第二开关选择性地与发射机放大器的输入端耦合的第三端口 ; 以及第二循环器，包括耦合用于经由所述天线进行通信的第一端口，与所述接收器放大器的输入端耦合的第二端口，以及与所述发射器放大器的输出端耦合的第三端口。 第二开关在接收模式下工作，以将第一循环器的第三端口连接到第一负载阻抗，用于吸收经由第一循环器从前级收发器反射的能量，并且在发送模式下操作以连接第三端口 第一个循环器到发射机放大器的输入端。 第一切换在发射模式下工作，以将第一循环器的第二端口连接到第二负载阻抗，用于经由第一循环器吸收从发射器放大器的输入反射的能量，并且在接收模式下操作以连接第二 端口的第一个循环器到接收放大器的输出。