ATM switching system and cell control method
    41.
    发明申请
    ATM switching system and cell control method 审中-公开
    ATM交换系统和电池控制方法

    公开(公告)号:US20010036156A1

    公开(公告)日:2001-11-01

    申请号:US09883191

    申请日:2001-06-19

    IPC分类号: H04L012/56

    摘要: An ATM switching system includes PVC allocation circuits 13-i corresponding to output queues 14-i is disclosed. At the time of arrival of the leading cell of each burst data, if the output line has a room, the PVC of the burst data is stored as information for admission and identification. The subsequently-arriving cells having the same PVC identification information as the stored identification information are nullinput to an output buffer, and the cells of the remaining burst data are all discarded. Even when a plurality of burst data compete for the same output line, the fact that all the cells other than the first-arriving admitted burst data are discarded prevents the cells from being input other than within a predetermined bandwidth and localizes the burst data affected by the cell discarding due to output queue overflow.

    摘要翻译: ATM交换系统包括对应于输出队列14-i的PVC分配电路13-i。 在每个突发数据的前导单元的到达时,如果输出线具有空间,则突发数据的PVC被存储为用于准入和识别的信息。 具有与存储的识别信息相同的PVC识别信息的随后到达的小区被“输入到输出缓冲器”,并且剩余突发数据的单元都被丢弃,即使当多个突发数据竞争相同的输出线时, 除了首先到达的入站突发数据之外的所有小区被丢弃的事实防止了小区在预定带宽内的输入,并且由于输出队列溢出而使受到小区丢弃影响的突发数据进行本地化。

    Apparatus and method for classifying information received by a communications system
    42.
    发明授权
    Apparatus and method for classifying information received by a communications system 有权
    用于分类由通信系统接收的信息的装置和方法

    公开(公告)号:US06295532B1

    公开(公告)日:2001-09-25

    申请号:US09261061

    申请日:1999-03-02

    IPC分类号: G06F1730

    摘要: The present invention involves a system and method for classifying information received by a communications device. A first parameter having a first parameter range and a second parameter range, and a second parameter having a third parameter range and a fourth parameter range, are defined. A first class having one of the first parameter and the second parameter ranges, and one of the third and the fourth parameter ranges, are also defined. A second class having another one of the first parameter and the second parameter ranges, and another one of the third and the fourth parameter ranges, is also defined. Information having a first parameter value and a second parameter value is received. The method determines if the first parameter value is within one of the first and second parameter ranges and if the second parameter value is within one of the third and fourth parameter ranges is made. If so, the information is classified into one of the first and second classes based on the first parameter value and the second parameter value, otherwise the information is classified as a default class. An output value representative of the classification is then generated.

    摘要翻译: 本发明涉及一种用于对由通信设备接收的信息进行分类的系统和方法。 定义具有第一参数范围和第二参数范围的第一参数以及具有第三参数范围和第四参数范围的第二参数。 还定义了具有第一参数和第二参数范围之一以及第三和第四参数范围之一的第一类。 还定义了具有第一参数和第二参数范围中的另一个的第二类,以及第三和第四参数范围中的另一个。 接收具有第一参数值和第二参数值的信息。 该方法确定第一参数值是否在第一和第二参数范围之一内,并且如果第二参数值在第三和第四参数范围之一内。 如果是,则基于第一参数值和第二参数值将信息分类为第一类和第二类之一,否则将该信息分类为默认类。 然后生成表示分类的输出值。

    Transcoder for use in an ATM-based communications system
    44.
    发明授权
    Transcoder for use in an ATM-based communications system 失效
    用于基于ATM的通信系统的转码器

    公开(公告)号:US06049543A

    公开(公告)日:2000-04-11

    申请号:US773588

    申请日:1996-12-27

    摘要: An ATM hub transcoder system (AXC) is coupled to a base station controller (BSC), a mobile switching center (MSC), and a base transceiver subsystem (BTS). In one embodiment, the transcoder system is comprised of an ATM switch subsystem, a transcoder subsystem (XC), a base transceiver subsystem interface (BTSI), and a mobile switching center network interface subsystem (MSC-NI). The ATM switch provides coupling and communication of data in an internal ATM format between each of the XC, BTSI, MSC-NI, and BSC, responsive to control signals from the BSC. The MSC-NI provides for conversion of the format of the data between the internal ATM format and a synchronous format. In one embodiment, the synchronous format is used for communication between the MSC and the NI, responsive to the MSC and the BSC, and the BTSI provides for communicating mobile subsystem information between the BTS and the XC, responsive to the BTS and the BSC. In one embodiment, the interface between the ATM switch and the MSC-NI is PCM encoded in the internal ATM format data. The In an alternate embodiment, the interface between the ATM switch and the BTSI is of digitally encoded voice data in the internal ATM format. The MSC-NI couples the data originating from the MSC via the ATM switch to the transcoder subsystem (XC).

    摘要翻译: ATM集线器转码器系统(AXC)耦合到基站控制器(BSC),移动交换中心(MSC)和基站收发器子系统(BTS)。 在一个实施例中,代码转换器系统包括ATM交换子系统,代码转换器子系统(XC),基站收发器子系统接口(BTSI)和移动交换中心网络接口子系统(MSC-NI)。 ATM交换机响应于来自BSC的控制信号,在XC,BTSI,MSC-NI和BSC之间提供内部ATM格式的数据的耦合和通信。 MSC-NI提供在内部ATM格式和同步格式之间转换数据格式。 在一个实施例中,响应于MSC和BSC,同步格式用于MSC和NI之间的通信,并且BTSI响应于BTS和BSC,提供在BTS和XC之间传送移动子系统信息。 在一个实施例中,ATM交换机和MSC-NI之间的接口是以内部ATM格式数据编码的PCM。 在替代实施例中,ATM交换机和BTSI之间的接口是内部ATM格式的数字编码语音数据。 MSC-NI通过ATM交换机将源自MSC的数据耦合到代码转换器子系统(XC)。

    ATM cell transfer system in which use efficiency of transmission line is
improved
    47.
    发明授权
    ATM cell transfer system in which use efficiency of transmission line is improved 失效
    传输线的使用效率提高的ATM信元传输系统

    公开(公告)号:US5946312A

    公开(公告)日:1999-08-31

    申请号:US950594

    申请日:1997-10-15

    申请人: Makoto Suzuki

    发明人: Makoto Suzuki

    摘要: In an asynchronous transfer mode (ATM) cell transfer apparatus, a valid cell detecting circuit determines whether or not each of ATM cells is valid, based on a specific data of the ATM cell. When it is determined that the ATM cell is not valid, the valid cell detecting circuit discards the ATM cell. On the other hand, when it is determined that the ATM cell is valid, the valid cell detecting circuit writes the ATM cell in a buffer circuit. A read control circuit reads out the ATM cell from the buffer circuit.

    摘要翻译: 在异步传输模式(ATM)小区传输装置中,有效小区检测电路基于ATM信元的特定数据来确定每个ATM信元是否有效。 当确定ATM信元无效时,有效信元检测电路丢弃ATM信元。 另一方面,当确定ATM信元有效时,有效信元检测电路将ATM信元写入缓冲电路。 读取控制电路从缓冲电路读出ATM信元。

    Method and apparatus for avoiding control reads in a network node
    48.
    发明授权
    Method and apparatus for avoiding control reads in a network node 失效
    用于避免网络节点中的控制读取的方法和装置

    公开(公告)号:US5922046A

    公开(公告)日:1999-07-13

    申请号:US712736

    申请日:1996-09-12

    摘要: A mechanism for avoiding the initiation of control read transactions on a system bus coupling a host system having a host memory and an interface connected to a peripheral unit as data is moved between the host system and the peripheral unit is presented. Control information associated with data memory portions in host memory is written to the interface for data memory portions storing outgoing data and data memory portions to receive incoming data. The interface includes a controller for moving data between the host memory and the interface by first obtaining the control information for the associated data portions. The interface writes status reports in association with the movement of data between the interface and the host memory via the system bus. The mechanism thus enables data transfers to occur via the system without the initiation of control reads in absence of an exception condition.

    摘要翻译: 提出了一种用于避免在系统总线上启动控制读取事务的机制,该系统总线耦合具有主机存储器的主机系统和连接到外围单元的接口,因为数据在主机系统和外围设备之间移动。 将与主机存储器中的数据存储器部分相关联的控制信息写入存储输出数据和数据存储器部分的数据存储器部分的接口以接收输入数据。 接口包括控制器,用于通过首先获得相关联的数据部分的控制信息来在主机存储器和接口之间移动数据。 该接口通过系统总线写入与接口和主机存储器之间的数据移动相关联的状态报告。 因此,该机制使得能够在没有异常条件的情况下通过系统进行数据传输而不启动控制读取。

    Network interface
    50.
    发明授权
    Network interface 失效
    网络接口

    公开(公告)号:US5751951A

    公开(公告)日:1998-05-12

    申请号:US549940

    申请日:1995-10-30

    摘要: A packet based data transmission system includes a flexible optimized nonocking transmit interface that incorporates optimized buffer modes, dynamic and static chaining, streaming and the utilization of small packet formats. Static chaining refers to connecting together the linked list for successive packets for the same transmit channel or virtual channel. Dynamic chaining refers to means by which the network interface performs this chaining automatically, thereby solving a blocking problem. On the transmit side, streaming refers to initiating the transmission of packet data before the entire packet data has been presented to the interface. This, in turn, permits more rapid recycling of the buffer space. On the receive side, streaming refers to initiating the processing of packet data before the entire packet has been received. The packet transmission system also includes a receive interface that incorporates a chunking system in which a buffer is divided into multiple chunks or segments to accommodate different size packets. Additionally, the receive interface includes an optimized linked list scheme to support chunking in which no linking element is required for the first buffer in the linked list. In one embodiment a small packet format is provided to reduce the relative overhead in sending small packets. In another embodiment the optimized buffer mode associated with the receive side can be utilized on the transmit interface for further reducing overhead.

    摘要翻译: 基于分组的数据传输系统包括灵活的优化的非阻塞传输接口,其包含优化的缓冲器模式,动态和静态链接,流传输以及小包格式的利用。 静态链接是指为相同发射信道或虚拟信道的连续分组连接在一起的链表。 动态链接是指网络接口自动执行链接,从而解决阻塞问题。 在传输方面,流传输是指在将整个分组数据呈现给接口之前发起分组数据的传输。 这反过来又允许更快速地回收缓冲空间。 在接收端,流是指在接收到整个分组之前发起分组数据的处理。 分组传输系统还包括接收接口,该接收接口包含分块系统,其中缓冲器被分成多个块或段以适应不同大小的分组。 此外,接收接口包括优化的链表方案以支持分块,其中链接列表中的第一缓冲器不需要链接元素。 在一个实施例中,提供小分组格式以减少发送小分组的相对开销。 在另一个实施例中,可以在发送接口上利用与接收侧相关联的优化缓冲器模式,以进一步减少开销。