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    Media access control for isochronous data packets in carrier sensing multiple access systems
    12.
    发明授权
    Media access control for isochronous data packets in carrier sensing multiple access systems 失效
    媒体访问控制用于同步数据包在载波传感多址系统中

    公开(公告)号：US5761430A

    公开(公告)日：1998-06-02

    申请号：US630066

    申请日：1996-04-12

    申请人： Kevin Paul Gross ,  Charles William Anderson ,  Derek Wearin Lieb ,  Gerrit Eimbertus Rosenboom ,  William Warren Lowe

    发明人： Kevin Paul Gross ,  Charles William Anderson ,  Derek Wearin Lieb ,  Gerrit Eimbertus Rosenboom ,  William Warren Lowe

    IPC分类号： H04L12/403 ,  H04L12/413 ,  H04L12/56 ,  H04L12/64 ,  H04Q11/04 ,  G06F17/00

    CPC分类号： H04L12/4035 ,  H04L12/40019 ,  H04L12/413 ,  H04L12/6418 ,  H04Q11/0478 ,  H04L12/40013 ,  H04L2012/5612 ,  H04L2012/5675 ,  H04L2012/6448

    摘要： The present invention has solved the collision problems in a CSMA network protocol and at the same time optimized performance of the network. This is accomplished by giving control of the size of the reserved portion and the size of the reservation portion of the communication frame to stations in the network. Further, the reserved portion is allotted to isochronous data packets each of whose length is variable. Also, only those packets that have a reservation are in the frame, and they are placed in the frame in order in accordance with there position of the permission or reservation list. The network timing is controlled by one of the stations acting as a conductor for the network. This conductor station receives the reservation requests from the other stations and builds a beat packet. The beat packet is transmitted from the conductor station to all stations of the network, and provides the timing or beat of the network that all stations are synchronized with. In addition, the beat packet contains the permission list (reservation list) identifying the stations that will transmit, and when they will transmit during the frame. The network interrupt handler and the conductor at the conductor station build this beat packet.

    摘要翻译： 本发明解决了CSMA网络协议中的冲突问题，同时优化了网络的性能。 这通过将通信帧的保留部分的大小和通信帧的预留部分的大小控制到网络中的站点来实现。 此外，保留部分被分配给每个长度可变的同步数据分组。 此外，只有具有预约的那些分组在帧中，并且它们根据许可或预约列表的位置按顺序被放置在帧中。 网络定时由作为网络的导体的一个站控制。 该导体站接收来自其他站的预留请求并构建节拍包。 节拍包从导体站发送到网络的所有站点，并提供所有站点同步的网络的定时或节拍。 此外，节拍包包含识别将要发送的电台的许可列表（预约列表），以及何时将在帧期间发送。 网络中断处理程序和导体站处的导体构建这个节拍包。

    Local loopback of isochronous data in a switching mechanism
    14.
    发明授权
    Local loopback of isochronous data in a switching mechanism 失效
    交换机制中的同步数据本地环回

    公开(公告)号：US5506846A

    公开(公告)日：1996-04-09

    申请号：US226403

    申请日：1994-04-12

    申请人： Brian C. Edem ,  Debra J. Worsley ,  Michael S. Evans

    发明人： Brian C. Edem ,  Debra J. Worsley ,  Michael S. Evans

    IPC分类号： H04J3/22 ,  H04L12/44 ,  H04L12/46 ,  H04L12/64

    CPC分类号： H04L12/44 ,  H04L12/64 ,  H04L12/6418 ,  H04L2012/6437 ,  H04L2012/6448 ,  H04L2012/6459

    摘要： A data communication system such as a local area network or a wide area network capable of transmitting isochronous data. The system conveys both isochronous data and non-isochronous data by time multiplexing data into a recurring frame structure on a 4-bit nibble basis. The arriving data is de-multiplexed at a hub into separate channels which are forwarded to separate hardware appropriate for handling the particular data stream. The data is passed hierarchically from a source, through a node, and to a hub. The hub places the data into an internal connection memory for switching onto a high bandwidth bus for distribution to other destination hubs, nodes, or sinks, except, where the source node and destination node are attached to the same hub, the hub provides a local loopback to the destination node, thus avoiding the need to place the transmitted data onto the bus. This system conserves room on the bus for other isochronous and non-isochronous data.

    摘要翻译： 数据通信系统，例如能够发送等时数据的局域网或广域网。 该系统通过将数据时间复用为4比特半字节的重复帧结构来传送同步数据和非同步数据。 到达的数据在集线器处被解复用为分离的信道，这些信道被转发到适于处理特定数据流的独立硬件。 数据从源，通过节点和集线器分层传递。 集线器将数据放入内部连接存储器中，用于切换到高带宽总线以分发到其他目标集线器，节点或接收器，除了源节点和目标节点附加到同一集线器之外，集线器提供本地 环回到目的地节点，从而避免将发送的数据放置在总线上的需要。 该系统节省了其他同步和非同步数据的总线空间。

    Hybrid data communications systems
    15.
    发明授权
    Hybrid data communications systems 失效
    混合数据通信系统

    公开(公告)号：US5377189A

    公开(公告)日：1994-12-27

    申请号：US161865

    申请日：1993-12-06

    申请人： Alan D. Clark

    发明人： Alan D. Clark

    IPC分类号： H04L12/56 ,  H04L12/64 ,  H04Q11/04 ,  H04J3/02

    CPC分类号： H04L12/6418 ,  H04L12/64 ,  H04J2203/0044 ,  H04L2012/5613 ,  H04L2012/5651 ,  H04L2012/6435 ,  H04L2012/6448 ,  H04L2012/6464

    摘要： A hybrid data communication system comprises synchronous line cards(3) and asynchronous line cards(2) connected to a common data bus(1) includes a contention bus(7) arranged to communicate contention signals between the line cards(2,3). The synchronous line cards are arranged to transmit a high priority contention signal to suspend any outgoing transmission by an asynchronous card(3) and to gain access to the bus(1) of synchronous data. The contention bus includes an acknowledgement line(ACK) which is driven low by a receiving line card to indicate that it is receiving data. The receiving line card performs error checking and only receives the acknowledgement when the received data is determined to be error free. In a preferred example, the asynchronous line cards(2) are arranged to monitor the contention line(7) to detect the initiation of a contention cycle by a synchronous line card(3). Subsequently on the completion of the contention cycle the asynchronous cards(2) interrupt ant outgoing transmission of a data frame to allow the transmission of data by the synchronous card(3).

    摘要翻译： 混合数据通信系统包括连接到公共数据总线（1）的同步线卡（3）和异步线卡（2），包括设置为在线卡（2,3）之间传送竞争信号的竞争总线（7）。 同步线卡被布置为传送高优先级争用信号以暂停异步卡（3）的任何输出传输并且获得对同步数据的总线（1）的访问。 竞争总线包括由接收线路卡驱动为低电平以指示其正在接收数据的确认线路（ACK）。 接收线路卡执行错误检查，并且仅在接收到的数据被确定为无错误时才接收确认。 在优选示例中，异步线卡（2）被布置成监视竞争线（7）以通过同步线卡（3）检测竞争周期的启动。 随后在争用周期完成时，异步卡（2）中断数据帧的输出传输，以允许同步卡（3）发送数据。

    Frame-based transmission of data
    16.
    发明授权
    Frame-based transmission of data 失效
    基于帧的数据传输

    公开(公告)号：US5361261A

    公开(公告)日：1994-11-01

    申请号：US970329

    申请日：1992-11-02

    申请人： Brian C. Edem ,  Debra J. Worsley

    发明人： Brian C. Edem ,  Debra J. Worsley

    IPC分类号： H04L12/56 ,  H04L12/44 ,  H04L12/64 ,  H03M7/00 ,  H04J3/02

    CPC分类号： H04L12/6418 ,  H04L12/44 ,  H04L2012/6437 ,  H04L2012/6448 ,  H04L2012/6459

    摘要： A network for transferring packet data in a frame structure, preferably mixed with isochronous data is provided. The frame structure is a continuously repeating structure, with each frame having a number of time slots. Certain ones of the time slots are available for transmitting packet data. The packet data is re-timed, e.g., by using a FIFO to output the data nibble-wise as required by the frame structure. Similar re-timing can be used for isochronous data so that the frame structure defines time-division multiplexing of the packet data and isochronous data. A four/five encoding scheme provides sufficient encoding efficiency that both the packet data and other data can be accommodated without degrading the data rate of the packet data. The encoding scheme provides extra symbols which can be used for transferring "no carrier" information, or "frame alignment" messages. Preferably, the frame structure is translated to and from a packet structure to permit the present invention to be used with previously available packet circuitry such as a media access controller and a hub repeater circuit. Latency of the FIFO can be reduced by pre-filling with packet preambles, and/or sub-latency propagation of preamble bytes, or providing special MACs which do not output preambles, and using the buffer circuitry to output preambles.

    摘要翻译： 提供了一种用于以帧结构传送分组数据的网络，优选地与等时数据混合。 帧结构是连续重复的结构，每个帧具有多个时隙。 某些时隙可用于发送分组数据。 分组数据被重新定时，例如通过使用FIFO来按照帧结构的要求以数字方式输出数据。 类似的重新定时可以用于等时数据，使得帧结构定义分组数据和等时数据的时分复用。 四/五编码方案提供了足够的编码效率，可以容纳分组数据和其他数据，而不降低分组数据的数据速率。 编码方案提供了可用于传送“无载波”信息或“帧对准”消息的额外符号。 优选地，帧结构被转换成分组结构并且从分组结构转换为允许本发明与先前可用的分组电路一起使用，诸如媒体接入控制器和集线器中继器电路。 FIFO的延迟可以通过预填充分组前导码和/或前导码字节的子延迟传播，或提供不输出前导码的特殊MAC，以及使用缓冲电路来输出前导码来减少。

    METHOD AND APPARATUS FOR ADDRESS RESOLUTION
    18.
    发明申请
    METHOD AND APPARATUS FOR ADDRESS RESOLUTION 审中-公开

    公开(公告)号：US20170346659A1

    公开(公告)日：2017-11-30

    申请号：US15527079

    申请日：2014-12-09

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Qianxi Lu ,  Rui Fan ,  Gunnar Mildh

    IPC分类号： H04L12/64

    CPC分类号： H04L12/6418 ,  H04L2012/6424 ,  H04L2012/6448

    摘要： Embodiments of the invention generally relate to address resolution in a wireless communication system. The access node may locally determine, responsive to receiving a second-layer network address associated with a destination communication device from a source communication device in the wireless communication system, a first-layer network address of the destination communication device from the second-layer network address. The access node may send, responsive to the first-layer network address being unavailable, a request for the first-layer network address to an address resolution server in the wireless communication system. In this way, the time and resources for address resolution may be saved, and the efficiency of the address resolution may be improved.

    Medium access control header format
    19.
    发明授权
    Medium access control header format 有权
    介质访问控制头格式

    公开(公告)号：US08902927B2

    公开(公告)日：2014-12-02

    申请号：US12241405

    申请日：2008-09-30

    申请人： Sai Yiu Duncan Ho

    发明人： Sai Yiu Duncan Ho

    IPC分类号： H04J3/24 ,  H04W28/06 ,  H04W80/02

    CPC分类号： H04W28/065 ,  H04L29/0653 ,  H04L2012/6448 ,  H04W28/06 ,  H04W80/02

    摘要： Systems and methodologies are described that facilitate employing a variety of medium access control (MAC) header formats in wireless communications. The MAC header formats can be specialized for a particular type of data included in a protocol data unit (PDU). In addition, the MAC headers can have a variable length to accommodate payloads of varying sizes without incurring unnecessary overhead. Further, mechanisms are provided to enable direct access and delivery of control PDUs to associated protocol layers to ensure better quality of service treatment.

    摘要翻译： 描述了有助于在无线通信中采用各种介质访问控制（MAC）报头格式的系统和方法。 MAC报头格式可以专门用于包括在协议数据单元（PDU）中的特定类型的数据。 此外，MAC头可以具有可变长度以适应不同大小的有效载荷，而不会引起不必要的开销。 此外，提供了用于使控制PDU直接访问和传递到相关协议层的机制，以确保更好的服务质量处理。

    APPARATUS, SYSTEM AND METHOD OF PROTOCOL ADAPTATION LAYER (PAL) COMMUNICATION TO INDICATE TRANSITIONING A DEVICE TO A DEFAULT STATE
    20.
    发明申请
    APPARATUS, SYSTEM AND METHOD OF PROTOCOL ADAPTATION LAYER (PAL) COMMUNICATION TO INDICATE TRANSITIONING A DEVICE TO A DEFAULT STATE 有权
    用于指示将设备转换为默认状态的协议适配层（PAL）通信的装置，系统和方法

    公开(公告)号：US20140341110A1

    公开(公告)日：2014-11-20

    申请号：US14129297

    申请日：2013-09-08

    申请人： Bahareh Sadeghi ,  Marek Dabek ,  Rafal Wielicki ,  Elad Levy

    发明人： Bahareh Sadeghi ,  Marek Dabek ,  Rafal Wielicki ,  Elad Levy

    IPC分类号： H04L12/24 ,  H04L29/06 ,  H04W80/04

    CPC分类号： G06F13/385 ,  G06F13/4068 ,  G06F13/4282 ,  H04L12/40123 ,  H04L12/6418 ,  H04L69/16 ,  H04L2012/6448 ,  H04W80/04

    摘要： Some demonstrative embodiments include apparatuses, systems and/or methods of transitioning a device to a default state. For example, an apparatus may include a first Protocol Adaptation Layer (PAL) communication unit to communicate PAL traffic with a second PAL communication unit over a communication link, the PAL traffic comprising traffic of a PAL connection over a PAL, the PAL is above a layer of the communication link, wherein the first PAL communication unit is to communicate a device reset request and a device reset response with the second PAL communication unit over the communication link, the device reset request indicating transitioning of a peripheral device to a default state, the device reset response in response to the device reset request, the device reset response indicating whether the device reset request is successfully handled.

    摘要翻译： 一些演示实施例包括将设备转换到默认状态的设备，系统和/或方法。 例如，设备可以包括通过通信链路将PAL业务与第二PAL通信单元通信的第一协议适配层（PAL）通信单元，PAL业务包括通过PAL的PAL连接业务，PAL高于 层，其中第一PAL通信单元通过通信链路与第二PAL通信单元通信设备复位请求和设备复位响应，指示外围设备转换到默认状态的设备复位请求， 响应于设备复位请求的设备复位响应，指示设备复位请求是否被成功处理的设备复位响应。