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：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：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：US06922405B2

公开(公告)日：2005-07-26

申请号：US09817474

申请日：2001-03-26

申请人： Albert Eikelenboom ,  Adriaan Kamerman ,  Hendrik Moelard ,  Leo Monteban

发明人： Albert Eikelenboom ,  Adriaan Kamerman ,  Hendrik Moelard ,  Leo Monteban

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04Q7/24

CPC分类号： H04W28/18 ,  H04W24/00 ,  H04W36/00 ,  H04W60/00 ,  H04W84/12

摘要： The present invention relates to a wireless local area network station comprising a signal processing element, a carrier detect sensing element, a defer behavior sensing element, and memory. The network station transmits and receives signals within a communication cell that defines a carrier detect zone and a defer zone around an access point. The network station associates with the access point by transmitting an association request to the access point and by receiving an association response from the access point during entry of the network station into the cell. The network station receives a preferred carrier detect threshold level value and a preferred defer behavior threshold level value from the access point and stores the carrier detect threshold and defer behavior threshold level values in its memory for use during operation while being associated with the access point.

摘要翻译： 本发明涉及一种包括信号处理元件，载体检测感测元件，延迟行为感测元件和存储器的无线局域网站。 网络站在定义接入点周围的载波检测区域和延迟区域的通信小区内发送和接收信号。 网络站通过向接入点发送关联请求并通过在网络站进入小区期间从接入点接收到关联响应来与接入点相关联。 网络站从接入点接收优选的载波检测阈值电平值和优选的延迟行为阈值电平值，并将载波检测阈值和延迟行为阈值电平值存储在其存储器中，以在与接入点相关联的同时在操作期间使用。

公开(公告)号：US5371738A

公开(公告)日：1994-12-06

申请号：US69037

申请日：1993-05-28

申请人： Hendrik Moelard ,  Leo Monteban

发明人： Hendrik Moelard ,  Leo Monteban

IPC分类号： H04L12/28 ,  H04Q7/04 ,  H04B7/26 ,  H04J3/14

CPC分类号： H04W36/0083 ,  H04W40/36 ,  H04W84/12

摘要： A local area network system (10) includes a wired backbone LAN (12) having a plurality of LAN segments (14, 16, 18) interconnected by transparent bridges (26, 44). A plurality of base stations (22, 52) are capable, of communicating with a mobile wireless station (30). In response to a decision at the mobile wireless station (30) to switch communication from a first base station (22) to a second base station (52) a handover request message (172) is transmitted from the mobile wireless station (30) via the backbone LAN (12) to the first base station (22) thereby updating dynamic filtering databases contained in the base stations (22, 52) and transparent bridges (26, 44) through which the handover request message (172) passes as to the new communication location of the mobile wireless station (30).

摘要翻译： 局域网系统（10）包括具有由透明桥（26,44）互连的多个LAN段（14,16,18）的有线骨干LAN（12）。 多个基站（22,52）能够与移动无线站（30）进行通信。 响应于在移动无线站（30）处将来自第一基站（22）的通信切换到第二基站（52）的决定，切换请求消息（172）从移动无线站（30）经由 所述主干LAN（12）到所述第一基站（22），从而更新包含在所述基站（22,52）中的动态过滤数据库和所述切换请求消息（172）通过的透明网桥（26,44） 移动无线站的新通信位置（30）。

公开(公告)号：US07801063B2

公开(公告)日：2010-09-21

申请号：US10670747

申请日：2003-09-25

申请人： Gerrit Willem Hiddink ,  Leo Monteban

发明人： Gerrit Willem Hiddink ,  Leo Monteban

IPC分类号： H04B7/00 ,  H04L12/28 ,  H04L12/26 ,  H04L1/00

CPC分类号： H04L1/1867 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/16

摘要： A method and apparatus are disclosed for reducing a transmission rate for retransmission of a current frame in a wireless communication system. The reduced transmission rate increases the probability that the current frame is correctly transmitted and acknowledged. The transmission rate is progressively reduced for the current frame to avoid the expiration of the frame's retry count, while not affecting the transmission rate of subsequent frames. The next frame should be transmitted at the highest rate permitted by the signal quality. A disclosed retry count expiry avoidance algorithm increases the reliability of a retransmission by lowering the transmission rate for the current frame when an acknowledgement is not received. When an acknowledgement is not received, the transmitting station proceeds to a retransmitting state where the transmitting station first attempts to retransmit the frame at the same rate. When the number of “equal rate attempts” is exceeded, the retry count expiry avoidance algorithm enters to a fallback state, where the transmission rate is decreased in a progressive manner.

摘要翻译： 公开了一种用于在无线通信系统中降低当前帧的重传的传输速率的方法和装置。 降低的传输速率增加了当前帧被正确发送和确认的概率。 对于当前帧，传输速率逐渐降低，以避免帧重试计数的到期，同时不影响后续帧的传输速率。 应以信号质量允许的最高速率发送下一帧。 所公开的重试计数到期避免算法通过在没有接收到确认时降低当前帧的传输速率来提高重传的可靠性。 当没有接收到确认时，发送站进行到发送站首先尝试以相同速率重发帧的重传状态。 当超过“等速尝试”的次数时，重试计数到期避免算法进入回退状态，其中传输速率以逐行方式减少。

公开(公告)号：US07551592B2

公开(公告)日：2009-06-23

申请号：US10743595

申请日：2003-12-22

申请人： Harald van Kampen ,  Leo Monteban

发明人： Harald van Kampen ,  Leo Monteban

IPC分类号： H04W4/00

CPC分类号： H04W52/0216 ,  Y02D70/142

摘要： A power management method, in which creation of deliver opportunities for a wireless station (STA) of a WLAN system is managed using a designated sub-field of the frame control field in a MAC header. In one embodiment, the STA is adapted (i) to use the power management sub-field to communicate its power state to the access point (AP) and (ii) to run a periodicity timer, which starts when the STA has transitioned to the doze state. The STA transitions to the awake state either when it has a data frame available for transmission to the AP or when the periodicity timer runs out. In another embodiment, the AP and STA create deliver opportunities by entering a new mode of operation referred to as interactive traffic power management (ITPM) mode, during which the power management sub-field is ignored and the more data sub-field is used to communicate the power state and manage transitions of the STA between the awake and doze states. Embodiments of the invention improve WLAN system performance when the traffic load is such that data frames become available for transmission both at the STA and AP at relatively regular intervals, which is typically the case for interactive voice-over-WLAN applications.

摘要翻译： 一种功率管理方法，其中使用MAC报头中的帧控制字段的指定子字段来管理WLAN系统的无线站（STA）的传送机会的创建。 在一个实施例中，STA适于（i）使用功率管理子场将其功率状态传送到接入点（AP），并且（ii）运行周期性定时器，其在STA已经转换到 打盹状态 当STA具有可用于传输到AP的数据帧或周期性定时器用尽时，STA转换到唤醒状态。 在另一个实施例中，AP和STA通过输入被称为交互式业务功率管理（ITPM）模式的新的操作模式来创建交付机会，在此期间功率管理子字段被忽略，并且更多的数据子字段被用于 传达功率状态并管理STA在唤醒和打盹状态之间的转换。 当业务负载使数据帧变得可用于在STA和AP以相对规则的间隔传输时，本发明的实施例可以改善WLAN系统性能，这通常是用于交互式WLAN语音应用的情况。

公开(公告)号：US20090010275A1

公开(公告)日：2009-01-08

申请号：US12209277

申请日：2008-09-12

申请人： Wilhelmus Diepstraten ,  Richard M. van Leeuwen ,  Leo Monteban

发明人： Wilhelmus Diepstraten ,  Richard M. van Leeuwen ,  Leo Monteban

IPC分类号： H04L12/413

CPC分类号： H04W28/26 ,  H04W72/06

摘要： A medium-reservation mechanism improves transmission efficiency in a multiple-channel network that includes stations with limited-selectivity receivers. The mechanism employs a medium-request signal that conveys channel information. In this network, stations check the channel information in the medium-request signal to decide whether or not to comply with the medium-request signal. If the channel information identifies the channel that is close to the channel that the station is presently operating on, the station then complies with the medium-request signal. If the channel information identifies a channel other than the channel that the station is presently operating on, the station ignores the medium-request signal.

摘要翻译： 媒体预留机制提高了包含有限选择性接收机的多信道网络的传输效率。 该机制采用传达信道信息的中等请求信号。 在该网络中，站检查介质请求信号中的信道信息，以决定是否符合介质请求信号。 如果信道信息识别出正在当前正在工作的频道的频道，则该台符合媒体请求信号。 如果信道信息识别除了当前正在工作的信道之外的信道，则该站忽略媒体请求信号。

公开(公告)号：US20050136914A1

公开(公告)日：2005-06-23

申请号：US10743595

申请日：2003-12-22

申请人： Harald van Kampen ,  Leo Monteban

发明人： Harald van Kampen ,  Leo Monteban

IPC分类号： H04L12/28 ,  H04W52/02 ,  H04Q7/20

CPC分类号： H04W52/0216 ,  Y02D70/142

摘要： A power management method, in which creation of deliver opportunities for a wireless station (STA) of a WLAN system is managed using a designated sub-field of the frame control field in a MAC header. In one embodiment, the STA is adapted (i) to use the power management sub-field to communicate its power state to the access point (AP) and (ii) to run a periodicity timer, which starts when the STA has transitioned to the doze state. The STA transitions to the awake state either when it has a data frame available for transmission to the AP or when the periodicity timer runs out. In another embodiment, the AP and STA create deliver opportunities by entering a new mode of operation referred to as interactive traffic power management (ITPM) mode, during which the power management sub-field is ignored and the more data sub-field is used to communicate the power state and manage transitions of the STA between the awake and doze states. Embodiments of the invention improve WLAN system performance when the traffic load is such that data frames become available for transmission both at the STA and AP at relatively regular intervals, which is typically the case for interactive voice-over-WLAN applications.

摘要翻译： 一种功率管理方法，其中使用MAC报头中的帧控制字段的指定子字段来管理WLAN系统的无线站（STA）的传送机会的创建。 在一个实施例中，STA适于（i）使用功率管理子场将其功率状态传送到接入点（AP），并且（ii）运行周期性定时器，其在STA已经转换到 打盹状态 当STA具有可用于传输到AP的数据帧或周期性定时器用尽时，STA转换到唤醒状态。 在另一个实施例中，AP和STA通过输入被称为交互式业务功率管理（ITPM）模式的新的操作模式来创建交付机会，在此期间功率管理子字段被忽略，并且更多的数据子字段被用于 传达功率状态并管理STA在唤醒和打盹状态之间的转换。 当业务负载使数据帧变得可用于在STA和AP以相对规则的间隔传输时，本发明的实施例可以改善WLAN系统性能，这通常是用于交互式WLAN语音应用的情况。