公开(公告)号：USRE40032E1

公开(公告)日：2008-01-22

申请号：US10368018

申请日：2003-02-19

申请人： Hendrik van Bokhorst ,  Albertus M. G. Claessen ,  Wilhelmus J. M. Diepstraten ,  Johannes P. N. Haagh ,  Hendrik Moelard ,  Leo Monteban ,  Rienk Mud

发明人： Hendrik van Bokhorst ,  Albertus M. G. Claessen ,  Wilhelmus J. M. Diepstraten ,  Johannes P. N. Haagh ,  Hendrik Moelard ,  Leo Monteban ,  Rienk Mud

IPC分类号： H04B7/14

CPC分类号： H04W52/0216 ,  Y02D70/142 ,  Y02D70/22

摘要： A wireless data communication system is operable in a power saving mode wherein stations are synchronized to be in an awake state to receive synchronizing messages (TIM, PSYNC) and traffic indicator information and are changed to a doze state if they are not to receive data messages. In one embodiment all stations (20) communicate via a base station access point (16), which broadcasts synchronizing messages (TIM) at regular intervals identifying stations (20) that are to receive data messages. In another embodiment all stations (220) communicate directly with one another, one station assumes the role of a master station and broadcasts synchronizing messages (PSYNC), and stations (220) desiring to transmit data messages transmit traffic indicator messages (PTIM) to the appropriate destination stations (220), in a synchronized awake period just before the next synchronizing message (PSYNC) is expected to arrive.

摘要翻译： 无线数据通信系统在省电模式下可操作，其中站同步处于唤醒状态以接收同步消息（TIM，PSYNC）和业务指示符信息，并且如果它们不接收数据消息，则其被改变为打盹状态 。 在一个实施例中，所有站（20）经由基站接入点（16）进行通信，基站接入点（16）以规则的间隔广播同步消息（TIM），以识别要接收数据消息的站（20）。 在另一个实施例中，所有站（220）彼此直接通信，一个站承担主站的作用并广播同步消息（PSYNC），并且期望发送数据消息的站（220）将业务指示符消息（PTIM）发送到 预期在下一个同步消息（PSYNC）之前的同步唤醒时段期间，适当的目的地站（220）将到达。

公开(公告)号：US06192230B1

公开(公告)日：2001-02-20

申请号：US08127268

申请日：1993-09-27

申请人： Hendrik van Bokhorst ,  Albertus M. G. Claessen ,  Wilhelmus J. M. Diepstraten ,  Johannes P. N. Haagh ,  Hendrik Moelard ,  Leo Monteban ,  Rienk Mud

发明人： Hendrik van Bokhorst ,  Albertus M. G. Claessen ,  Wilhelmus J. M. Diepstraten ,  Johannes P. N. Haagh ,  Hendrik Moelard ,  Leo Monteban ,  Rienk Mud

IPC分类号： H04B714

CPC分类号： H04W52/0216 ,  H04W88/022 ,  Y02D70/142 ,  Y02D70/22

摘要： A wireless data communication system is operable in a power saving mode wherein stations are synchronized to be in an awake state to receive synchronizing messages (TIM, PSYNC) and traffic indicator information and are changed to a doze state if they are not to receive data messages. In one embodiment all stations (20) communicate via a base station access point (16), which broadcasts synchronizing messages (TIM) at regular intervals identifying stations (20) that are to receive data messages. In another embodiment all stations (220) communicate directly with one another, one station assumes the role of a master station and broadcasts synchronizing messages (PSYNC), and stations (220) desiring to transmit data messages transmit traffic indicator messages (PTIM) to the appropriate destination stations (220), in a synchronized awake period just before the next synchronizing message (PSYNC) is expected to arrive.

摘要翻译： 无线数据通信系统在省电模式下可操作，其中站同步处于唤醒状态以接收同步消息（TIM，PSYNC）和业务指示符信息，并且如果它们不接收数据消息，则其被改变为打盹状态 。 在一个实施例中，所有站（20）经由基站接入点（16）进行通信，基站接入点（16）以规则的间隔广播同步消息（TIM），以识别要接收数据消息的站（20）。 在另一个实施例中，所有站（220）彼此直接通信，一个站承担主站的作用并广播同步消息（PSYNC），并且期望发送数据消息的站（220）将业务指示符消息（PTIM）发送到 预期在下一个同步消息（PSYNC）之前的同步唤醒时段期间，适当的目的地站（220）将到达。

公开(公告)号：US5898679A

公开(公告)日：1999-04-27

申请号：US775238

申请日：1996-12-30

申请人： Loeke Brederveld ,  Jan Hoogendoorn ,  Hendrik Moelard ,  Leo Monteban ,  Rienk Mud

发明人： Loeke Brederveld ,  Jan Hoogendoorn ,  Hendrik Moelard ,  Leo Monteban ,  Rienk Mud

IPC分类号： H04L1/00 ,  H04L1/18 ,  H04L7/00 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04W84/12 ,  H04W88/04 ,  H04B7/14 ,  H04J1/10 ,  H04J3/08

CPC分类号： H04L1/1809 ,  H04L2001/0092 ,  H04W84/12 ,  H04W88/04

摘要： For use in a wireless computer network having a radio relay capable of transmitting messages, a system and method, operable with the radio relay, for selectively repeating a unicast message received from a source end-station only upon some indication that a destination end-station has not received the message. The system includes: (1) a transceiver that receives the unicast message from the source end-station and (2) control circuitry, coupled to the transceiver, that determines whether the destination end-station has received the unicast message and causes the transceiver to refrain from repeating the unicast message if the destination end-station has received the unicast message, the radio relay thereby freed from repeating already-received unicast messages.

摘要翻译： 为了在具有能够发送消息的无线电中继器的无线计算机网络中使用，可以与该无线电中继器一起操作的系统和方法仅在一个目的地终端站的指示上选择性地重复从源端站接收到的单播消息 没有收到消息。 该系统包括：（1）从源终端接收单播消息的收发器，以及耦合到收发器的控制电路，其确定目的终端是否已经接收到单播消息，并使收发信机 如果目的终端已经接收到单播消息，则不重复单播消息，所以无线中继从而避免重复已经接收到的单播消息。

公开(公告)号：US5987033A

公开(公告)日：1999-11-16

申请号：US925416

申请日：1997-09-08

申请人： Jan Boer ,  Hendrik van Bokhorst ,  Wilhelmus Josephus Diepstraten ,  Adriaan Kamerman ,  Rienk Mud ,  Hans van Driest ,  Robert John Kopmeiners

发明人： Jan Boer ,  Hendrik van Bokhorst ,  Wilhelmus Josephus Diepstraten ,  Adriaan Kamerman ,  Rienk Mud ,  Hans van Driest ,  Robert John Kopmeiners

IPC分类号： H04L12/28 ,  H04B7/00 ,  H04L12/413 ,  H04Q7/00

CPC分类号： H04W74/0816 ,  Y02B60/50

摘要： A receiver, and a method for operating the receiver, for a station in a wireless local area network using a common wireless communication channel and employing a CSMA/CA (carrier sense multiple access with collision avoidance) protocol includes various modes. In normal mode, the receiver follows typical states in order to detect a message and demodulate data from the message properly. Meanwhile, a process implements a message-in-message (MIM) mode when an energy increase above a specified level is detected. While in the MIM mode, if a carrier is detected, the energy increase is caused by a new message; otherwise, the energy increase is caused by an interfering station. If the carrier is detected, the receiver begins retraining so that it can start receiving the new message as soon as the first message ends. If no carrier is detected, the receiver waits a specified time to detect a carrier or for the end of the first message, after which the receiver returns to the beginning of the normal mode. While in the normal mode, if a message is detected that is not addressed to the station, the receiver enters a hunt mode. While in the hunt mode, the receiver waits for the current message to finish. At the same time, a process implements retraining when both an energy increase above a specified level and a carrier are detected. If no carrier is detected within a specified time, or if the energy level decreases below the specified level, the receiver returns to the beginning of the normal mode.

摘要翻译： 使用公共无线通信信道和采用CSMA / CA（具有冲突避免的载波侦听多路访问）协议的无线局域网中的站的接收机和操作接收机的方法包括各种模式。 在正常模式下，接收机遵循典型状态，以便检测消息并正确地解调消息中的数据。 同时，当检测到高于指定电平的能量增加时，处理实现消息消息（MIM）模式。 在MIM模式下，如果检测到载波，则能量增加是由新信息引起的; 否则，能量增加是由干扰站造成的。 如果检测到载波，则接收机开始重新训练，以便在第一个消息结束时，它可以开始接收新消息。 如果没有检测到载波，则接收机等待指定的时间来检测载波或第一个消息的结束，接收机返回到正常模式的开始。 在正常模式下，如果检测到没有寻址到站的消息，则接收机进入寻线模式。 在寻线模式下，接收机等待当前消息完成。 同时，当检测到高于指定水平的能量增加和载波时，过程实施再训练。 如果在指定时间内没有检测到载波，或者能量水平降低到指定的电平以下，则接收机返回正常模式的开始。

公开(公告)号：US6067291A

公开(公告)日：2000-05-23

申请号：US936033

申请日：1997-09-23

申请人： Adriaan Kamerman ,  Leo Monteban ,  Rienk Mud

发明人： Adriaan Kamerman ,  Leo Monteban ,  Rienk Mud

IPC分类号： H04B7/005 ,  H04L12/28 ,  H04W52/18 ,  H04W74/08 ,  H04Q7/24

CPC分类号： H04W74/0808 ,  H04W52/18

摘要： A method and system of operating a wireless local area network station adapted to transmit and receive a signal within a communication cell. The method includes the steps of establishing a carrier detect threshold level, establishing a defer threshold level, and transmitting a signal when the signal level detected by the network station is above the defer threshold level. Additionally, the method further includes the step of receiving a signal transmission intended for the network station when the power of the received signal transmission is above the carrier detect threshold level.

摘要翻译： 一种操作适于在通信小区内发送和接收信号的无线局域网站的方法和系统。 该方法包括以下步骤：当网络站检测到的信号电平高于延迟阈值电平时，建立载波检测阈值电平，建立延迟阈值电平和发送信号。 此外，该方法还包括当接收信号传输的功率高于载波检测阈值电平时，接收针对网络站的信号传输的步骤。

公开(公告)号：US06967994B2

公开(公告)日：2005-11-22

申请号：US09948531

申请日：2001-09-07

申请人： Jan Boer ,  Henk Van Bokhorst ,  Robert John Kopmeiners ,  Kai Roland Kriedte ,  Rienk Mud

发明人： Jan Boer ,  Henk Van Bokhorst ,  Robert John Kopmeiners ,  Kai Roland Kriedte ,  Rienk Mud

IPC分类号： H04L1/00 ,  H04L27/22 ,  H04L5/16 ,  H04L27/06 ,  H04L27/14 ,  H04K9/00

CPC分类号： H04L1/0006

摘要： A system for operating a communication system comprising one or more transmitters and receivers. The transmitted signals are provided with a preamble for training the receiver and/or the transmitter being in communication. The quality of the received signal is measured and compared with a threshold. If the quality is higher or lower than said threshold, a short preamble processing or a long preamble processing, respectively, is used. More than one threshold and associated pairs of preambles having different length may be used.

摘要翻译： 一种用于操作包括一个或多个发射器和接收器的通信系统的系统。 发送的信号被提供有用于训练接收机和/或正在通信的发射机的前同步码。 测量接收信号的质量并将其与阈值进行比较。 如果质量高于或低于所述阈值，则分别使用短前导码处理或长前导码处理。 可以使用具有不同长度的多于一个阈值和相关联的前导码对。

公开(公告)号：US5410738A

公开(公告)日：1995-04-25

申请号：US753778

申请日：1991-09-03

申请人： Wilhemus J. M. Diepstraten ,  Rienk Mud

发明人： Wilhemus J. M. Diepstraten ,  Rienk Mud

IPC分类号： H04B1/38 ,  H04L12/28 ,  H04B7/00

CPC分类号： H04W92/02 ,  H04B1/38 ,  H04W84/12

摘要： A wireless local area network (LAN) station and method for operating the same. The station has a number of antennas for communicating with a similar number of LANs, respectively. Transmissions from one antenna are blocked when the other antenna is receiving RF signals.

摘要翻译： 无线局域网（LAN）站及其操作方法。 该站具有用于与相似数量的LAN通信的多个天线。 当另一个天线正在接收RF信号时，来自一个天线的传输被阻塞。