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公开(公告)号：EP1972115B1
公开(公告)日：2016-10-12
申请号：EP07710038.6
申请日：2007-01-10
CPC分类号： H04W52/0225 , H04W74/04 , Y02D70/142 , Y02D70/144 , Y02D70/23
摘要： Techniques to efficiently schedule and serve stations in a wireless network are described. An access point may aggregate stations with flows carrying traffic having similar characteristics, e.g., VoIP flows. The access point may schedule these stations together in an overall service period. The access point may serve each station in a respective service period within the overall service period. The access point may send a multi poll frame at the start of the overall service period to indicate the start time and/or service period for each station. Each station may decide to power down until its start time. The service periods for the stations may overlap one another. The service period for each station may cover an initial transmission as well as additional transmission and/or retransmission. If additional transmission and/or retransmission are not needed for a given station, then the next station may be served right away.
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2.发明授权PROTECTION FOR DIRECT LINK SETUP (DLS) TRANSMISSIONS IN WIRELESS COMMUNICATION SYSTEMS 有权保护直接连接（DLS）传输的无线通信系统中
公开(公告)号：EP2215784B1
公开(公告)日：2011-07-06
申请号：EP08857019.7
申请日：2008-11-14
摘要： Certain embodiments of the present disclosure provide techniques and apparatus for establishing direct link setup (DLS) connections between stations in a wireless local area network (WLAN). The DLS connections may be established in a manner that helps avoid collisions with transmissions from hidden stations.
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3.发明公开PROTECTION FOR DIRECT LINK SETUP (DLS) TRANSMISSIONS IN WIRELESS COMMUNICATION SYSTEMS 有权保护直接连接（DLS）传输的无线通信系统中
公开(公告)号：EP2215784A2
公开(公告)日：2010-08-11
申请号：EP08857019.7
申请日：2008-11-14
摘要： Certain embodiments of the present disclosure provide techniques and apparatus for establishing direct link setup (DLS) connections between stations in a wireless local area network (WLAN). The DLS connections may be established in a manner that helps avoid collisions with transmissions from hidden stations.
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公开(公告)号：EP1972115A1
公开(公告)日：2008-09-24
申请号：EP07710038.6
申请日：2007-01-10
IPC分类号： H04L12/56
CPC分类号： H04W52/0225 , H04W74/04 , Y02D70/142 , Y02D70/144 , Y02D70/23
摘要： Techniques to efficiently schedule and serve stations in a wireless network are described. An access point may aggregate stations with flows carrying traffic having similar characteristics, e.g., VoIP flows. The access point may schedule these stations together in an overall service period. The access point may serve each station in a respective service period within the overall service period. The access point may send a multi poll frame at the start of the overall service period to indicate the start time and/or service period for each station. Each station may decide to power down until its start time. The service periods for the stations may overlap one another. The service period for each station may cover an initial transmission as well as additional transmission and/or retransmission. If additional transmission and/or retransmission are not needed for a given station, then the next station may be served right away.
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公开(公告)号：EP2080331A2
公开(公告)日：2009-07-22
申请号：EP07874437.2
申请日：2007-10-16
IPC分类号： H04L12/56
CPC分类号： H04W52/0225 , H04W88/02 , Y02D70/122 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22
摘要： Techniques for improving power saving by stations (120x) in wireless networks (100) are described. In an aspect, a source station receives a frame with information on transmission opportunity (TXOP) bursting receive capability of a recipient station operating in a power save mode. The source station performs channel access at the start of a TXOP and sends multiple data frames in the TXOP to the recipient station based on the TXOP bursting receive capability of the recipient station.
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6.发明公开METHOD AND SYSTEM FOR PROVIDING BEAMFORMING FEEDBACK IN WIRELESS COMMUNICATION SYSTEMS 审中-公开方法和系统提供波束成形反馈无线通信系统
公开(公告)号：EP2039022A2
公开(公告)日：2009-03-25
申请号：EP07812372.6
申请日：2007-06-27
IPC分类号： H04B7/06
CPC分类号： H04B7/0643 , H04B7/0421 , H04B7/0617 , H04B7/0634 , H04B7/0636 , H04L25/0204 , H04L25/0228 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Techniques to support beamforming for stations in a wireless network are described. In one aspect, a station may support beamforming with implicit feedback or explicit feedback by having capabilities to transmit and receive sounding frames, respond to training request by sending a sounding frame, and respond to request for explicit feedback. In one design of explicit beamforming, the station may send a first frame with a request for explicit feedback and may also send a Null Data Packet (NDP) having at least one training field but no data field. The station may receive a second frame with the explicit feedback, which may be derived based on the NDP. The station may derive steering information (e.g., steering matrices) based on the explicit feedback and may then send a steered frame with beamforming based on the steering information. The station may also perform implicit beamforming using NDP for sounding.
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公开(公告)号：EP2080331B1
公开(公告)日：2016-11-16
申请号：EP07874437.2
申请日：2007-10-16
CPC分类号： H04W52/0225 , H04W88/02 , Y02D70/122 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22
摘要： Techniques for improving power saving by stations (120x) in wireless networks (100) are described. In an aspect, a source station receives a frame with information on transmission opportunity (TXOP) bursting receive capability of a recipient station operating in a power save mode. The source station performs channel access at the start of a TXOP and sends multiple data frames in the TXOP to the recipient station based on the TXOP bursting receive capability of the recipient station.
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8.发明公开METHOD AND APPARATUS FOR PROVIDING BEAMFORMING FEEDBACK IN WIRELESS COMMUNICATION SYSTEMS 有权方法和一种用于提供波束成形反馈无线通信系统
公开(公告)号：EP2025101A2
公开(公告)日：2009-02-18
申请号：EP07784219.3
申请日：2007-05-30
CPC分类号： H04B7/0636 , H04B7/0417 , H04B7/0634 , H04L1/1671
摘要： Techniques for quickly sending feedback information for beamforming are described. A transmitter/initiator sends a first frame comprising training symbols. A receiver/responder receives the first frame, determines the amount of time to generate feedback information, and determines the amount of time to send the feedback information. The receiver then determines the length of a second frame carrying the feedback information based on the amounts of time to generate and send the feedback information. The receiver sends the second frame after waiting a short interframe space (SIFS) period from the end of the first frame, without performing channel access. The receiver generates the feedback information based on the training symbols and sends the information in the second frame when ready. The transmitter receives the second frame, derives at least one steering matrix based on the feedback information, and sends a third frame with the at least one steering matrix.
摘要翻译： 对于快速发送波束形成反馈信息的技术。 的发射机/发起者发送的第一帧包括训练符号。 的接收器/应答器接收第一帧，确定性地雷的时间来生成反馈信息的数量，和确定的地雷的时间来发送所述反馈信息的量。 然后，接收机确定性地雷的第二帧承载基于时间生成并发送的反馈信息的量的反馈信息的长度。 所述接收器从所述第一帧的末尾等待一个短帧间空间（SIFS）期间，不进行信道接入之后发送所述第二帧。 该接收机基因费率基于所述锻炼符号的反馈信息，并发送在第二帧中的信息时，准备好了。 发射机接收第二帧，导出基于所述反馈信息中的至少一个导引矩阵，并发送与所述至少一个导引矩阵的第三帧。
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9.发明公开METHODS AND DEVICES FOR INTERWORKING OF WIRELESS WIDE AREA NETWORKS AND WIRELESS LOCAL AREA NETWORKS OR WIRELESS PERSONAL AREA NETWORKS 审中-公开方法和设备的合作与无线广域网，无线局域网或无线个人区域网络
公开(公告)号：EP1911220A2
公开(公告)日：2008-04-16
申请号：EP06786458.7
申请日：2006-07-06
IPC分类号： H04L12/56
CPC分类号： H04W84/18 , H04M7/0075 , H04W24/08 , H04W40/02 , H04W40/20 , H04W60/00 , H04W84/04 , H04W84/12 , H04W88/08 , H04W92/02
摘要： The application relates to a method for constructing a self-configuring ad-hoc network. The method can include receiving a GPS coordinate from a node through a WWAN channel at a management system and creating an initial topography based at least in part on the GPS coordinate to achieve a network connectivity with diverse routes between a plurality of nodes.
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公开(公告)号：EP1829255A2
公开(公告)日：2007-09-05
申请号：EP05824377.5
申请日：2005-11-15
CPC分类号： H04L1/0015 , H04B17/309 , H04L1/0002 , H04L1/1607 , Y02D50/10
摘要： A method for wireless communications, comprising receiving, via a second communication link, feedback for packets sent in a first data transmission via a first communication link; estimating signal-to-noise-and-interference ratio (SNR) of the first communication link based on an estimated SNR of the second communication link, an asymmetric parameter indicating a difference in channel quality between the first and second communication links, and at least one back-off factor used to used to reduce the SNR estimate from an average SNR; adjusting at least one back-off factor based on the received feedback; and selecting a rate for a second data transmission based on the estimated channel quality of the first communication link as well as a corresponding apparatus.
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