公开(公告)号：WO1996035281A1

公开(公告)日：1996-11-07

申请号：PCT/US1996005054

申请日：1996-04-11

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  PERREAULT, John, A. ,  JOSHI, Abhay ,  KABATEPE, Mete ,  LLOYD, Lawrence, W. ,  SCHROEDER, Stephen

IPC: H04L12/403

CPC classification number: H04L12/4035

Abstract: Apparatus and method to implement a hybrid contention and polling protocol for a communications or computer network. Various embodiments employ primary station polls (115, 120) to identify secondary stations in an active state; limited contention polls (126) to identify individual secondary stations in an idle state or identify a subset of secondary stations in an idle state to initiate limited contention access to the network; limited contention polls for collision resolution (603) when a plurality of secondary stations in an idle state have simultaneously contended for network access; general polls (122) to secondary stations in an unresponsive state to initiate contention access to the network; and general polls for collision resolution (411) when a plurality of secondary stations simultaneously contend for network access. Various embodiments may include frequency channel allocation for transmission and reception of data within the network. The various procedures and apparatus disclosed may also apply various polling parameters to optimize network performance.

Abstract translation: 实现通信或计算机网络的混合争用和轮询协议的装置和方法。 各种实施例采用主站轮询（115,120）来识别处于活动状态的次站; 有限争用轮询（126）以识别处于空闲状态的个别次站或识别处于空闲状态的次站的子集以发起对网络的有限争用访问; 当处于空闲状态的多个次站同时竞争用于网络接入时，用于冲突解决的有限争用轮询（603） 一般民意调查（122）到处于无响应状态的次站启动对网络的争用访问; 以及当多个次站同时进行网络访问时的冲突解决的一般轮询（411）。 各种实施例可以包括用于网络内的数据的发送和接收的频率信道分配。 所公开的各种程序和装置也可以应用各种轮询参数来优化网络性能。

公开(公告)号：EP1354413B1

公开(公告)日：2006-02-01

申请号：EP01996051.7

申请日：2001-11-30

Applicant: MOTOROLA, INC.

Inventor： COOPER, Michael, J. ,  SCHROEDER, Stephen

IPC: H03M13/35 ,  H04L1/00

CPC classification number: H04L12/2801 ,  H03M13/35

Abstract: An adaptive and dynamic forward error correction scheme for a communication channel is disclosed. The method and apparatus calculates the actual bit error rate for comparison with a target bit error rate. When a channel is performing better than required by the performance specifications, the forward error correction power can be reduced to provide greater throughput. If the calculated actual bit error rate is greater than the target bit error rate, then the forward error correction power is increased in an attempt to lower the calculated bit error rate. A feedback loop is employed to continually calculate revised bit error rates as the forward error correction power is increased or decreased.

公开(公告)号：WO1996035276A1

公开(公告)日：1996-11-07

申请号：PCT/US1996004066

申请日：1996-03-26

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  PERREAULT, John, A. ,  JOSHI, Abhay ,  KABATEPE, Mete ,  LLOYD, Lawrence, W. ,  SCHROEDER, Stephen

IPC: H04J03/24

CPC classification number: H04L12/40013 ,  H04L12/40163 ,  H04L12/403

Abstract: A method for providing access by secondary stations (12, 14, 16) to a shared transmission medium, maintains a list of secondary stations (12, 14, 16). A poll is transmitted by a primary station (10) to one of the secondary stations (12, 14, 16). The secondary station (12, 14, 16) waits for a poll, examines the transmission allocation, determines if there is congestion and transmits, along with the data in response to the poll, information regarding congestion. A system for providing such access includes a primary station (10) and a plurality of secondary stations (12, 14, 16). The primary station includes a polling controller (30), a receiver (32), a transmitter (34), a summer (36), a secondary station poll list database (38) and a data traffic controller (40).

Abstract translation: 一种用于向次级站（12,14,16）提供到共享传输介质的访问的方法，保持次站列表（12,14,16）。 轮询由主站（10）发送到其中一个次站（12,14,16）。 次站（12,14,16）等待轮询，检查传输分配，确定是否存在拥塞并且响应于轮询的数据发送与拥塞有关的信息。 用于提供这种访问的系统包括主站（10）和多个次站（12,14,16）。 主站包括轮询控制器（30），接收器（32），发射机（34），加法器（36），次站轮询列表数据库（38）和数据业务控制器（40）。

公开(公告)号：WO1996035273A1

公开(公告)日：1996-11-07

申请号：PCT/US1996004980

申请日：1996-04-10

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  JOSHI, Abhay ,  KABATEPE, Mete ,  LLOYD, Lawrence, W. ,  PERREAULT, John, A. ,  SCHROEDER, Stephen

IPC: H04J03/00

CPC classification number: H04L12/4035

Abstract: An apparatus and method to implement a hybrid contention and polling protocol for a communications or computer network is disclosed. Various apparatus and method embodiments of the invention employ specific polls (116) from a primary station for polling identified secondary stations of the network which may be in an active state, general polls (124, 304) to any of a plurality of secondary stations of the network which may be in an unresponsive state to initiate contention access to the network, and general polls for collision resolution (318) in the event that a plurality of secondary stations may simultaneously contend for network access. Various embodiments may also include frequency channel allocation for transmission and reception of data and other information within the network. The various procedures and apparatus disclosed may also be used to apply various polling parameters to optimize network performance.

Abstract translation: 公开了一种用于实现通信或计算机网络的混合争用和轮询协议的装置和方法。 本发明的各种装置和方法实施例使用来自主站的特定轮询（116）来轮询可能处于活动状态的网络的所识别的次站，对多个次站中的任一个的一般轮询（124,304） 在多个次站可以同时争取网络访问的情况下，可能处于无响应状态以发起对网络的争用访问的网络以及用于冲突解决的一般轮询（318）。 各种实施例还可以包括用于在网络内发送和接收数据和其他信息的频率信道分配。 所公开的各种程序和装置也可以用于应用各种轮询参数来优化网络性能。

公开(公告)号：EP1354413A2

公开(公告)日：2003-10-22

申请号：EP01996051.7

申请日：2001-11-30

Applicant: MOTOROLA, INC.

Inventor： COOPER, Michael, J. ,  SCHROEDER, Stephen

IPC: H03M13/35

CPC classification number: H04L12/2801 ,  H03M13/35

Abstract: An adaptive and dynamic forward error correction scheme for a communication channel is disclosed. The method and apparatus calculates (206) the actual bit error rate for comparison (207) with a target bit error rate. When a channel is performing better than required by the performance specification, the forward error correction power can be reduced (214) to provide greater throughput. If the calculated actual bit error rate is greater than the target bit error rate, then the forward error correction power is increased (219) in an attempt to lower the calculated bit error rate. A feedback loop is employed to continually calculate received bit error rates as the forward error correction power is increased or decreased.

公开(公告)号：WO1997036377A1

公开(公告)日：1997-10-02

申请号：PCT/US1997004806

申请日：1997-03-25

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  KLAYMAN, Jeffrey, T. ,  PERREAULT, John, A. ,  UNGER, Katherine ,  SCHROEDER, Stephen

IPC: H03M13/00

CPC classification number: H04L1/0021 ,  H03M13/35 ,  H04L1/0009 ,  H04L1/0025

Abstract: An apparatus (101, 110) and method for adaptive forward error correction in a data communication system (100) provides for dynamically changing forward error correction parameters based upon communication channel conditions. Data having a current degree of forward error correction is received (305), and a channel parameter is monitored (310). A threshold level for the channel parameter is determined (315), and the monitored channel parameter is compared to the threshold level (320). When the channel parameter is not within a predetermined or adaptive variance of the threshold level, a revised forward error correction parameter having a greater or lesser degree of forward error correction capability is selected (330, 340, 350, 360), and the revised forward error correction parameter is transmitted (370). The device receiving the revised forward error correction parameter, such as a secondary station (110), then transmits data encoded utilizing the revised error correction parameter (425).

Abstract translation: 一种用于数据通信系统（100）中的自适应前向纠错的装置（101,110）和方法，用于基于通信信道条件动态地改变前向纠错参数。 接收到具有当前程度的前向纠错的数据（305），并且监视信道参数（310）。 确定通道参数的阈值水平（315），并将所监视的通道参数与阈值水平进行比较（320）。 当信道参数不在阈值水平的预定或自适应方差内时，选择具有更大或更小程度的前向纠错能力的经修正的前向纠错参数（330,340,350,360），并修改前向 发送错误校正参数（370）。 接收经修正的前向纠错参数（例如次站（110））的设备然后发送利用经修正的纠错参数（425）编码的数据。

公开(公告)号：WO1996035312A1

公开(公告)日：1996-11-07

申请号：PCT/US1996005999

申请日：1996-04-17

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  PERREAULT, John, A. ,  JOSHI, Abhay ,  KABATEPE, Mete ,  LLOYD, Lawrence, W. ,  SCHROEDER, Stephen

IPC: H04Q11/00

CPC classification number: H04L12/403

Abstract: A control station (8) is coupled to a plurality of tributary devices (16, 18, 20) by way of at least one high speed broadcast downstream data channel (9) and more than one shared lower speed upstream data channels (11, 13). The control station (8) broadcasts data to all the tributary devices (10, 16, 18) and selects a channel for a specific tributary device (16, 18, 20) to respond to a poll. After polling, the tributary device (10, 16, 18) changes the tributary device transmitter (42) to the frequency of the selected channel. The tributary device (16, 18, 20) either sends data to send to the control station (8) or sends a negative acknowledge to the control station (8). If a negative acknowledgment was transmitted, the control station (8) notifies the control station transmitter (10) that the channel is idle.

Abstract translation: 控制站（8）通过至少一个高速广播下游数据信道（9）和多于一个共享的较低速上行数据信道（11,13）耦合到多个辅助设备（16,18,20） ）。 控制站（8）向所有支流装置（10,16,18）广播数据，并选择用于特定辅助装置（16,18,20）的信道以响应轮询。 在轮询之后，辅助设备（10,16,18）将辅助设备发射机（42）改变为所选频道的频率。 支路装置（16,18,20）发送数据以发送给控制站（8）或发送否定确认给控制站（8）。 如果发送否定确认，则控制站（8）通知控制站发送器（10）信道空闲。

公开(公告)号：WO1996035282A1

公开(公告)日：1996-11-07

申请号：PCT/US1996003954

申请日：1996-03-19

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  PERREAULT, John, A. ,  JOSHI, Abhay ,  KABATEPE, Mete ,  LLOYD, Lawrence, W. ,  SCHROEDER, Stephen

IPC: H04L12/413

CPC classification number: H04L12/413 ,  H04L12/403

Abstract: A method and system provide efficient resolution of transmission collisions in a simultaneous channel access communication environment. At least a first Master device and a plurality of Slave devices utilize the steps of: (1) transmitting, by the plurality of Slave devices upon receiving a contention poll from the first Master device, information to the Master device, wherein transmissions of the Slave devices provide a collision (1002); (2) selecting a subset of Slaves allowed to retrsnsmit following the collision, by the first Master device using a collision resolution poll in accordance with a predetermined depth first tree search technique (1004); and (3) retransmitting, by the subset of Slave devices, the information to the Master device, and, where another collision is obtained, recycling to step 2 and repeating steps 2 and 3 until all collisions are resolved (1004, 1006 and 1008).

Abstract translation: 一种方法和系统在同时的信道接入通信环境中提供传输冲突的有效解决。 至少第一主设备和多个从设备利用以下步骤：（1）在从第一主设备接收到竞争轮询时由多个从设备发送到主设备的信息，其中从设备的传输 设备提供冲突（1002）; （2）根据预定的深度第一树搜索技术（1004），通过第一主设备使用冲突解决轮询来选择允许在冲突之后重新丢弃的从站的子集; 并且（3）由Slave设备的子集重新发送到主设备的信息，并且在获得另一个冲突的情况下再循环到步骤2并重复步骤2和3，直到所有的冲突被解决（1004,1006和1008） 。

公开(公告)号：WO1996035280A1

公开(公告)日：1996-11-07

申请号：PCT/US1996003957

申请日：1996-03-19

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  PERREAULT, John, A. ,  JOSHI, Abhay ,  KABATEPE, Mete ,  LLYOD, Lawrence, W. ,  SCHROEDER, Stephen

IPC: H04L12/403

CPC classification number: H04L12/413 ,  H04L12/403

Abstract: The system and method provide for efficiently resolving collisions in an environment where a transmitting device (112, 114, ..., 116) cannot hear collisions without a headend control station/control device (102), i.e., master, repeating transmission of all upstream frames in the downstream direction. This invention also prevents additional collisions from occurring between a device that is retransmitting and a device that is transmitting a packet for the first time. Further, the present invention allows continued utilization of a channel by other devices while contending devices are processing collision resolution procedures.

Abstract translation: 该系统和方法提供了在发射设备（112,114，...，116）无头部控制站/控制设备（102）即无法重复传输全局的环境中有效解决碰撞的冲突 上游帧在下游方向。 本发明还防止在重传的设备和正在第一次发送分组的设备之间发生额外的冲突。 此外，本发明允许在竞争的设备正在处理冲突解决过程时由其他设备继续使用信道。

公开(公告)号：EP0826279B1

公开(公告)日：2005-07-06

申请号：EP96911732.4

申请日：1996-04-11

Applicant: MOTOROLA, INC.

Inventor： PERREAULT, John, A. ,  JOSHI, Abhay ,  KABATEPE, Mete ,  LLOYD, Lawrence, W. ,  SCHROEDER, Stephen

IPC: H04L12/403

CPC classification number: H04L12/4035

Abstract: Apparatus and method to implement a hybrid contention and polling protocol for a communications or computer network. Various embodiments employ primary station polls (115, 120) to identify secondary stations in an active state; limited contention polls (126) to identify individual secondary stations in an idle state or identify a subset of secondary stations in an idle state to initiate limited contention access to the network; limited contention polls for collision resolution (603) when a plurality of secondary stations in an idle state have simultaneously contended for network access; general polls (122) to secondary stations in an unresponsive state to initiate contention access to the network; and general polls for collision resolution (411) when a plurality of secondary stations simultaneously contend for network access. Various embodiments may include frequency channel allocation for transmission and reception of data within the network. The various procedures and apparatus disclosed may also apply various polling parameters to optimize network performance.