Broadcasting of packets in an RF system
    5.
    发明授权
    Broadcasting of packets in an RF system 失效
    在RF系统中广播数据包

    公开(公告)号:US5321696A

    公开(公告)日:1994-06-14

    申请号:US000832

    申请日:1993-01-05

    CPC分类号: H04L12/189 H04W4/06

    摘要: An RF communication system contains a control module which communicates with a plurality of user modules that are each connected to at least one user device. The system provides a method for packet communications in which traditional destination addressed packets are communicated to the specified destination point or user module while also permitting information intended for a plurality of user modules to be broadcast simultaneously to all user modules using a broadcast protocol. The probability of each UM receiving the broadcast packet is enhanced by the transmission by the control module of each broadcast packet over at least several of its directional antennas and preferably repeated over each antenna a number of times. Packets of data which are longer than a predetermined number of bytes are broken into packet fragments.

    摘要翻译: RF通信系统包含与多个用户模块进行通信的控制模块,每个用户模块各自连接到至少一个用户设备。 该系统提供了一种用于分组通信的方法,其中传统的目的地寻址分组被传送到指定的目的地点或用户模块,同时还允许使用广播协议同时广播用于多个用户模块的信息到所有用户模块。 每个UM接收广播分组的概率通过控制模块在其至少几个定向天线上的每个广播分组的传输被增强,并且优选地在每个天线上重复多次。 比预定数量的字节长的数据包被分解成分组片段。

    Network interface architecture for a packet switch communication system
    7.
    发明授权
    Network interface architecture for a packet switch communication system 失效
    分组交换机通信系统的网络接口架构

    公开(公告)号:US5524007A

    公开(公告)日:1996-06-04

    申请号:US165718

    申请日:1993-12-13

    摘要: An improved network interface architecture for a packet switch provides for the combination of both voice and data in a single switch using a common packet structure. It allows for the dynamic allocation of bandwidth based on system loading. This includes not only bandwidth within the voice or data areas of the frame, but also between the voice and data portions. The network interface (NI) provides a mechanism (the NI-Bus) of passing all packets through the Network Interface or allowing the packet devices to directly transfer packets between one another. The bandwidth allocation can easily be changed because the control and data memories are synchronized to one another. The network interface architecture, according to the invention, allows for the data packets and the control of bandwidth allocation to be controlled by a single switching device. It synchronizes the transfer of the data and the allocation of bus bandwidth. The control of the packet devices can be controlled at a very high bit rate such as, for example, 40 Mbps. It also allows packet devices to directly transfer packets. It allows for easy re-allocation of bandwidth through the use of the NI Base Registers.

    摘要翻译: 用于分组交换机的改进的网络接口架构使用公共分组结构在单个交换机中提供语音和数据的组合。 它允许基于系统加载的带宽的动态分配。 这不仅包括帧的语音或数据区域内的带宽,还包括语音和数据部分之间的带宽。 网络接口(NI)提供了通过网络接口传递所有数据包或允许数据包设备在彼此之间直接传输数据包的机制(NI-Bus)。 带宽分配可以容易地改变,因为控制和数据存储器彼此同步。 根据本发明的网络接口架构允许数据分组和带宽分配的控制由单个交换设备控制。 它同步数据的传输和总线带宽的分配。 可以以非常高的比特率(例如40Mbps)来控制分组设备的控制。 它还允许数据包设备直接传输数据包。 它允许通过使用NI基本寄存器轻松重新分配带宽。

    Method for reducing transmission delays in a packet transmission system
    8.
    发明授权
    Method for reducing transmission delays in a packet transmission system 失效
    一种用于减少分组传输系统中的传输延迟的方法

    公开(公告)号:US5555266A

    公开(公告)日:1996-09-10

    申请号:US131358

    申请日:1993-10-04

    摘要: A packet transmission system (100) with reduced transmission delays includes a communications controller (110) and a plurality of remote requesting units (112) requesting packet transmission services. Each remote unit (112) sequentially stores transmitted access requests (302) in a memory queue (500) and awaits a resource grant (306) from the communications controller (110). Upon receipt of a granted resource the remote unit (112) will apply the granted resource to the oldest request (502) stored in the queue (500) in order to transmit data (310) to the communications controller (110). A separate and distinct aspect of the transmission system (100) resides within the communications controller (110). In response to the receipt of a data packet (310) from a remote unit (112), the communications controller (110) identifies missing data within the data packet transmission, determines whether communication resources are available to support retransmission of the missing data, and if so, transmits a response to the requesting remote unit identifying the missing data and simultaneously granting sufficient resources for retransmission of the missing data.

    摘要翻译: 具有减少的传输延迟的分组传输系统(100)包括通信控制器(110)和请求分组传输服务的多个远程请求单元(112)。 每个远程单元(112)顺序地将发送的访问请求(302)存储在存储器队列(500)中,并且等待来自通信控制器(110)的资源准许(306)。 在接收到授权资源之后,远程单元(112)将所授予的资源应用于存储在队列(500)中的最早的请求(502),以便将数据(310)发送到通信控制器(110)。 传输系统(100)的单独和不同的方面位于通信控制器(110)内。 响应于从远程单元(112)接收到数据分组(310),通信控制器(110)识别数据分组传输中的丢失数据,确定通信资源是否可用于支持丢失数据的重传,以及 如果是,则向请求的远程单元发送识别丢失的数据的响应,并同时授予足够的资源用于重传丢失的数据。

    Packet delivery system
    9.
    发明授权
    Packet delivery system 失效
    分组传送系统

    公开(公告)号:US5440545A

    公开(公告)日:1995-08-08

    申请号:US100403

    申请日:1993-08-02

    摘要: A packet switching system (100) having a packet switch (140) employs an acknowledgement scheme in order assure the delivery of all fragments (310) comprising a fragmented data packet (300) to improve overall system throughput during the handling of packets (310) that require reassembly. When packet fragments (310) are lost, corrupted or otherwise unintelligible to a receiving device (92, 94), the acknowledgement scheme permits retransmission of the missing data. In addition, a second acknowledgment signal is scheduled by system processing resources (110) in order to verify the successful delivery of all retransmitted data.

    摘要翻译: 具有分组交换机(140)的分组交换系统(100)采用确认方案,以便确保包括分段数据分组(300)的所有分段(310)的传递,以在处理分组(310)期间改善总体系统吞吐量 需要重新组装。 当分组片段(310)丢失,损坏或以其它方式对于接收设备(92,94)不了解时,确认方案允许丢失数据的重传。 另外,由系统处理资源(110)调度第二确认信号,以验证所有重发数据的成功传送。

    Method and apparatus for preserving packet squencing in a packet
transmission system
    10.
    发明授权
    Method and apparatus for preserving packet squencing in a packet transmission system 失效
    用于在分组传输系统中保持分组排序的方法和装置

    公开(公告)号:US5337313A

    公开(公告)日:1994-08-09

    申请号:US975360

    申请日:1992-11-12

    摘要: A method and apparatus for preserving the sequential relationship of a plurality of data packets 310 generated by separate source devices 14 and ordered as a data stream 300, despite transmission over radio channels which introduce ordering errors comprises method steps and apparatus structure for identifying at a first terminal, data packets from within the data stream as a function of source, generating data packet sequence information for identified data packets, storing values corresponding to data packet sequence numbers as a function of source and transmitting data packets, source device identity and packet sequence information to a second terminal having first terminal source device and data packet sequence information. Upon receipt of a first terminal transmission, the second terminal retrieves from second terminal memory, first terminal data packet sequence information and compares the stored data packet sequence information with received data packet sequence information. As a function of the comparison, received data packets are forwarded to an appropriate application for further processing when sequence information sequence numbers compare and stored in an order determined by the sequence information when the sequence numbers do not compare.

    摘要翻译: 尽管通过引入排序误差的无线电信道进行的传输,尽管通过无线电信道进行传输,用于保持由单独的源设备14生成并排序为数据流300的多个数据分组310的顺序关系的方法和装置包括方法步骤和装置结构, 终端,作为源的数据流内的数据分组,生成用于识别的数据分组的数据分组序列信息,存储与数据分组序列号对应的值作为源和发送数据分组的函数,源设备标识和分组序列信息 具有第一终端源设备和数据分组序列信息的第二终端。 在接收到第一终端传输时,第二终端从第二终端存储器检索第一终端数据分组序列信息,并将存储的数据分组序列信息与接收到的数据分组序列信息进行比较。 作为比较的功能,当序列号不比较时,当序列信息序列号按照序列信息确定的顺序进行比较和存储时,接收到的数据分组被转发到适当的应用以进一步处理。