公开(公告)号：EP0826277B1

公开(公告)日：2005-02-23

申请号：EP96910558.4

申请日：1996-03-26

Applicant: MOTOROLA, INC.

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

IPC: H04J3/24 ,  H04L12/28 ,  H04L12/403

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).

公开(公告)号：EP0861548A1

公开(公告)日：1998-09-02

申请号：EP96912675.0

申请日：1996-04-10

Applicant: MOTOROLA, INC.

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

IPC: H04L12

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.

公开(公告)号：EP0861548B1

公开(公告)日：2005-07-27

申请号：EP96912675.4

申请日：1996-04-10

Applicant: MOTOROLA, INC.

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

IPC: H04L12/403

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.

公开(公告)号：EP0509037B1

公开(公告)日：1999-08-25

申请号：EP91902538.7

申请日：1991-01-03

Applicant: MOTOROLA INC.

Inventor： SCHROEDER, Stephen ,  SRIDHAR, Manickam, R.

IPC: H04B1/74 ,  H04M11/06

CPC classification number: H04B1/74 ,  H04M11/06

公开(公告)号：EP0829144A1

公开(公告)日：1998-03-18

申请号：EP97917614.0

申请日：1997-03-25

Applicant: MOTOROLA, INC.

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

IPC: H03M13 ,  H04L1

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).

公开(公告)号：EP0826279A1

公开(公告)日：1998-03-04

申请号：EP96911732.0

申请日：1996-04-11

Applicant: MOTOROLA, INC.

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

IPC: H04L12

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: 用于实现通信或计算机网络的混合争用和轮询协议的设备和方法。 各种实施例使用主站轮询（115,120）来识别处于活动状态的辅助站; 有限竞争轮询（126）以识别处于空闲状态的各个副站或识别处于空闲状态的副站的子集以发起对网络的有限竞争访问; 当多个处于空闲状态的副站同时竞争网络访问时，用于冲突解决的有限争用轮询（603） 一般轮询（122）到处于无响应状态的辅站以发起对网络的争用访问; 以及当多个次站同时竞争网络访问时用于冲突解决的一般轮询（411）。 各种实施例可以包括用于在网络内传输和接收数据的频率信道分配。 所公开的各种过程和装置还可以应用各种轮询参数来优化网络性能。

公开(公告)号：EP0826277A1

公开(公告)日：1998-03-04

申请号：EP96910558.0

申请日：1996-03-26

Applicant: MOTOROLA, INC.

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

IPC: H04L12

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).