公开(公告)号：US20050018697A1

公开(公告)日：2005-01-27

申请号：US10725919

申请日：2003-12-02

申请人： Frederick Enns ,  Eduardo Moura ,  Jan Gronski ,  Ramesh Neelmegh ,  Jong Kim

发明人： Frederick Enns ,  Eduardo Moura ,  Jan Gronski ,  Ramesh Neelmegh ,  Jong Kim

IPC分类号： H04H20/42 ,  H04L12/24 ,  H04L12/28 ,  H04L12/54 ,  H04L29/06 ,  H04N7/173 ,  H04N21/2381 ,  H04N21/2385 ,  H04N21/24 ,  H04N21/262 ,  H04N21/643 ,  H04N21/6543 ,  H04L12/56

CPC分类号： H04H20/42 ,  H04L1/004 ,  H04L12/2801 ,  H04L12/5692 ,  H04L29/06 ,  H04L41/0806 ,  H04L41/0896 ,  H04L41/5009 ,  H04L41/5029 ,  H04L43/0847 ,  H04L63/0435 ,  H04N7/17309 ,  H04N21/2381 ,  H04N21/2385 ,  H04N21/2404 ,  H04N21/2405 ,  H04N21/26216 ,  H04N21/26291 ,  H04N21/64322 ,  H04N21/6543 ,  H04N2007/1739 ,  H04W24/00 ,  H04W28/18 ,  H04W28/24 ,  H04W40/02 ,  H04W72/04 ,  H04W74/00 ,  H04W74/06 ,  Y02D70/1222 ,  Y02D70/168 ,  Y02D70/30

摘要： An asymmetric network system manages bandwidth allocation and configuration of remote devices in a broadband network. A modular architecture of the system permits independent scalability of upstream and downstream capacity separately for each of the upstream and downstream physical paths. Allocation of downstream bandwidth to requesting devices is made according to bandwidth utilization by other devices, bandwidth demand by the requesting remote device, class or grade of service by the requesting remote device or bandwidth guaranteed to other remote devices. Configuration parameters remotely managed by the network include device addresses (global and local), transmission credit values, upstream channel assignment and upstream transmit power level. Further, management of device configuration profiles and bandwidth allocation occurs through control and response packets respectively generated by the network and the remote devices according to network operating software located at both ends. Control packets include poll packets that request, among other things, demand for an upstream transmission. Configuration packets instruct remote devices to assume an operational state or return status or statistical data. Response packets transmitted by the remote devices provide information to the network operations center for control purposes or to confirm the state of operation of remote devices, including channel operating statistics, errors, noise, etc. in order to remove or reallocate assigned upstream channels. Downloadable network operating software enables the network operator to upgrade remote operating software or to reconfigure the response profile of the remote devices. Account administration and usage reports are also generated. IP or ATM encapsulation, as well as forward error correction and encryption, are employed in the broadband network which may include an RF, satellite and cable medium with or without a telephony or router return path.

公开(公告)号：US5128945A

公开(公告)日：1992-07-07

申请号：US786016

申请日：1991-10-31

申请人： Frederick Enns ,  J. Paul O'Hare

发明人： Frederick Enns ,  J. Paul O'Hare

IPC分类号： H04L7/04 ,  H04L29/06 ,  H04L29/08

CPC分类号： H04L29/06 ,  H04L7/048 ,  H04L69/324

摘要： Packets transported over a serial data stream need to have their start and stop information encoded so that they can be parsed by the receiving device. Techniques used in various standards require extra bandwidth to carry this information. For framed data streams like T1, proprietary protocols have used the frame structure to mark packet boundaries. Both types of solutions are desirable for unframed, long distance data streams like the CCITT G.703 2.048 Mbps unframed service, subrate trunks, or fractional T1 services. The present invention provides a packet framing method that uses the Cyclic Redundancy Check (CRC) found in most packet formats. The protocol does not require any extra bandwidth and can work with any serial data stream physical layer.

摘要翻译： 通过串行数据流传输的数据包需要对其起始和停止信息进行编码，以便它们可以由接收设备进行解析。 在各种标准中使用的技术需要额外的带宽来承载这些信息。 对于诸如T1的成帧数据流，专有协议使用帧结构来标记分组边界。 对于非成帧的长距离数据流，如CCITT G.703 2.048 Mbps非成帧服务，子速率中继线或分数T1服务，两种类型的解决方案都是理想的。 本发明提供了一种使用在大多数分组格式中发现的循环冗余校验（CRC）的分组成帧方法。 该协议不需要任何额外的带宽，并且可以与任何串行数据流物理层一起工作。

公开(公告)号：US4608685A

公开(公告)日：1986-08-26

申请号：US605721

申请日：1984-04-30

申请人： Prem C. Jain ,  Frederick Enns

发明人： Prem C. Jain ,  Frederick Enns

IPC分类号： H04Q11/00 ,  H04L12/64 ,  H04J3/02

CPC分类号： H04L12/64

摘要： A telecommunications network being operable as a packet switch and as a circuit switch is comprised of a plurality of units including a call controller unit. Each of the units is connected in common to data, address, and control leads of a bus, the data leads being commonly available for signal transmissions of both call control signals between the call controller unit and the other units and communications signals between calling and called ones of the other units. A bus controller is connected to the units by way of the address and control leads for arbitrating access to the data leads by the units, so that only one unit may transmit at any one time. The bus controller includes, a poll circuit for polling the units for asynchronous transmission requests, a grant circuit being responsive to the requests, for granting access to the data leads for an indefinite period of time as required for transmission of a data packet from one of the units, and a synchronous cycle circuit, being responsive to a synchronous request signal from any of the units, for generating a synchronous cycle signal for inhibiting data packet transmission and enabling synchronous data transmission via the data leads during a predetermined period of time.

摘要翻译： 电信网络可操作为分组交换机，并且作为电路交换机由包括呼叫控制器单元的多个单元组成。 每个单元共同连接到总线的数据，地址和控制线，数据线通常可用于呼叫控制器单元和其他单元之间的呼叫控制信号的信号传输以及呼叫和被叫之间的通信信号 其他单位之一。 总线控制器通过地址和控制线连接到单元，用于对单元的数据引导进行仲裁访问，从而只有一个单元可以在任何一个时间传输。 总线控制器包括：用于轮询异步传输请求的单元的轮询电路，响应于该请求的授权电路，用于根据数据包的发送所需的无限期的时间准许对数据引导的访问， 所述单元和同步循环电路响应于来自任何单元的同步请求信号，用于产生用于禁止数据分组传输的同步周期信号，并且在预定时间段内通过数据引线实现同步数据传输。