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公开(公告)号：US09992738B2
公开(公告)日：2018-06-05
申请号：US13298059
申请日：2011-11-16
CPC分类号： H04W52/0216 , Y02D70/00 , Y02D70/142 , Y02D70/164
摘要： Certain aspects of the present disclosure provide methods and apparatus for using a random offset to achieve power savings. For certain aspects, a Basic Service Set (BSS)-specific offset may be added to the (partial) association identifier (AID) prior to entering the partial AID into a 9-bit field of the physical layer (PHY) header (e.g., bits 13-21 of the NSTS field). The BSS-specific offset may be selected randomly by an access point (AP) and signaled to the associated stations (STAs) through the association response, or the offset may be communicated to the STA via other means. In this manner, the value in the 9-bit field for downlink transmissions may, with high likelihood, be different from one BSS to the next, allowing STAs to remain awake only when a frame is being transmitted to them.
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公开(公告)号：US09900759B2
公开(公告)日：2018-02-20
申请号：US12917382
申请日：2010-11-01
摘要： Apparatus and methods of peer discovery in a communications network include generating a discovery request configured to identify a Tunneled Direct Link Setup (TDLS) capable peer device, transmitting the discovery request, and determining if a discovery response is received in response to the discovery request. In an aspect, the apparatus and methods may encapsulate the discovery request in a data frame such that the discovery request is transparent to an access point. In other aspects, the apparatus and methods may form the discovery request by appending TDLS capability information to a probe request. Additionally, the apparatus and methods may include determining if a discovery response is received in response to the discovery request. Thus, the apparatus and methods provide a deterministic method of peer discovery, so that a list of potential peers that are TDLS capable can be available before attempting a TDLS direct link setup.
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83.发明授权Systems and methods for acknowledging communications from a plurality of devices 有权用于确认来自多个设备的通信的系统和方法公开(公告)号：US09148871B2
公开(公告)日：2015-09-29
申请号：US13489000
申请日：2012-06-05
CPC分类号： H04W68/00 , H04L1/1607 , H04L2001/0093 , H04W4/06 , H04W84/18
摘要： Systems, methods, and devices for acknowledging communications from a plurality of devices for acknowledging communications from a plurality of devices are described herein. In some aspects, a group ACK includes a bitmap indicating whether a communication has been received from each of a plurality of apparatuses within a previous period. The previous period may comprise a time period since a previous ACK. In some aspects, group ACKs are transmitted pursuant to a schedule. For example, group ACKs may be transmitted a scheduled time after transmitting a beacon. In some aspects, a bitmap indicating whether a communication has been received from each of a plurality of apparatuses within a previous period may be transmitted in a beacon.
摘要翻译： 这里描述了用于确认来自多个设备的用于确认来自多个设备的通信的通信的系统，方法和设备。 在一些方面，组ACK包括指示在先前周期内是否已经从多个装置中的每一个接收到通信的位图。 前一个周期可以包括自从先前ACK之后的时间段。 在某些方面，按照时间表发送组ACK。 例如，可以在发送信标之后的预定时间发送组ACK。 在一些方面，可以在信标中发送指示是否已经从前一时段内的多个装置中的每一个接收到通信的位图。
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公开(公告)号：US08989213B2
公开(公告)日：2015-03-24
申请号：US13231726
申请日：2011-09-13
CPC分类号： H04B7/0697 , H04W74/04 , H04W74/0816 , H04W76/10
摘要： Certain aspects of the present disclosure provide methods and apparatus for utilizing a physical layer (PHY) header comprising an identifier for an access point (AP) or a Basic Service Set (BSS). A station (STA) that is assigned an order in a sequential response sequence may count only frames with PHY headers that contain the correct identifier. A STA may terminate its sequential access procedure when it receives a frame with a PHY header that specifies a different identifier for the AP or BSS that assigned the sequence. In this manner, the STA may prevent partly synchronizing to an overlapping network and avoid accessing the wireless medium at the wrong time.
摘要翻译： 本公开的某些方面提供了用于利用包括接入点（AP）或基本业务集（BSS）的标识符的物理层（PHY）报头的方法和装置。 在顺序响应序列中被分配顺序的站（STA）可以只对具有包含正确标识符的PHY标头的帧进行计数。 当STA接收到具有指定针对分配了该序列的AP或BSS的不同标识符的PHY头部的帧时，STA可以终止其顺序访问过程。 以这种方式，STA可以防止部分地与重叠的网络同步，并避免在错误的时间访问无线介质。
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公开(公告)号：US08842587B2
公开(公告)日：2014-09-23
申请号：US12765164
申请日：2010-04-22
CPC分类号： H04B17/0062 , H04B7/0617 , H04B17/21
摘要： This document describes, among other things, a method that includes transmitting a calibration initiation frame from a first wireless communication device to a second wireless communication device that comprises a single space-time stream transmitter via a wireless communication medium. The method also includes receiving at the first wireless communication device an acknowledgement frame sent from the second wireless communication device after the second wireless communication device receives the calibration initiation frame. The method further includes transmitting a null data packet (NDP) frame from the first wireless communication device to the second wireless communication device after receiving the acknowledgement frame. In some implementations, the method also includes performing beamforming calibration of a wireless communication channel between the first wireless communication device and the second wireless communication device based on the acknowledgement frame.
摘要翻译： 本文件尤其描述了一种方法，其包括将校准启动帧从第一无线通信设备发送到包括经由无线通信介质的单个时空流发送器的第二无线通信设备。 该方法还包括在第二无线通信设备接收到校准启动帧之后，在第一无线通信设备处接收从第二无线通信设备发送的确认帧。 该方法还包括：在接收到确认帧之后，从第一无线通信设备向第二无线通信设备发送空数据分组（NDP）帧。 在一些实施方式中，该方法还包括基于确认帧对第一无线通信设备和第二无线通信设备之间的无线通信信道进行波束成形校准。
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公开(公告)号：US08737370B2
公开(公告)日：2014-05-27
申请号：US13108693
申请日：2011-05-16
IPC分类号： H04W4/00
摘要： Establishing a direct link connection between subscriber stations in a wireless local area network (WLAN) comprises transmitting a direct link setup discovery request from an initiating station to an access point of the WLAN for distribution to one or more other stations, the discovery request including information concerning a capability of the initiating station for a direct link setup, receiving information from a receiving station among the one or more other stations, the received information concerning the capability of the receiving station for a direct link setup, and establishing a direct link connection with the receiving station based on the received information.
摘要翻译： 在无线局域网（WLAN）中建立用户站之间的直接链路连接包括将发起站点的直接链路建立发现请求发送到WLAN的接入点以分配给一个或多个其他站点，所述发现请求包括信息 关于发起站用于直接链路建立的能力，从一个或多个其他站中的接收站接收信息，接收到的关于接收站用于直接链路建立的能力的信息，以及建立与 接收站基于接收到的信息。
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公开(公告)号：US20130142176A1
公开(公告)日：2013-06-06
申请号：US13489075
申请日：2012-06-05
IPC分类号： H04W28/06
CPC分类号： H04W28/065 , H04L1/1607
摘要： Systems, methods, and devices for reducing the overhead required to transmit acknowledgment messages (ACKs) are described herein. In some aspects, the ACKs are reduced in size. In some aspects the ACKs include several short training fields. In some aspects, a receiver of the ACKs can determine the transmitter of the ACK based on when the ACK is received. In some aspects, a receiver of the ACKs can determine the transmitter of the ACK based on information superimposed on the short training fields in the ACK.
摘要翻译： 这里描述了用于减少发送确认消息（ACK）所需开销的系统，方法和设备。 在一些方面，ACK的大小减小。 在某些方面，ACK包括几个短训练场。 在一些方面，ACK的接收机可以基于何时接收到ACK来确定ACK的发射机。 在一些方面，ACK的接收机可以基于叠加在ACK中的短训练场上的信息来确定ACK的发射机。
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公开(公告)号：US20130142130A1
公开(公告)日：2013-06-06
申请号：US13485558
申请日：2012-05-31
IPC分类号： H04W24/02
摘要： Systems, methods, and devices for performing clear channel assessment at a receiving device are described herein. In some aspects, the receiving device determines whether it is the intended receiver for a data transmission. Upon determining it is the intended receiver, the receiving device transmits a reservation signal. Devices in the vicinity of the receiving device are configured to listen for the reservation signal and refrain from transmitting interfering signals to the receiving device based on the reservation signal.
摘要翻译： 这里描述了用于在接收设备处执行清晰信道评估的系统，方法和设备。 在一些方面，接收设备确定是否是用于数据传输的预期接收机。 在确定它是预期的接收机时，接收设备发送预约信号。 接收设备附近的设备被配置为监听预留信号，并且基于预约信号避免向接收设备发送干扰信号。
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公开(公告)号：US20120250576A1
公开(公告)日：2012-10-04
申请号：US13240852
申请日：2011-09-22
CPC分类号： H04W8/005 , H04W40/24 , H04W72/1205 , H04W84/18
摘要： Certain aspects of the present disclosure propose computer-program products for discovery of source or sink devices and their capabilities, prior to establishing a link such as a tunneled direct link setup (TDLS) link. The established link may be used for different applications such as Wi-Fi Display session with the desired source or sink device. The proposed computer-program product may also be applied to devices that utilize peer to peer communication.
摘要翻译： 在建立诸如隧道直接链路建立（TDLS）链路的链路之前，本公开的某些方面提出了用于发现源或宿设备及其能力的计算机程序产品。 建立的链路可以用于不同的应用，例如与所需的源或接收设备的Wi-Fi显示会话。 所提出的计算机程序产品还可以应用于利用对等通信的设备。
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公开(公告)号：US20120182915A1
公开(公告)日：2012-07-19
申请号：US13426469
申请日：2012-03-21
CPC分类号： H04W52/0216 , H04W84/12 , Y02D70/142 , Y02D70/146 , Y02D70/22
摘要： Stations in standby mode periodically wake up to check for buffered data at the access points. Traditionally, the information is available by checking the periodic beacon frame for a traffic indication map (TIM). Unfortunately, the length of beacons has steadily increased with the progression of the various wireless standards requiring stations to wake up for longer periods to merely check for buffered data. Several approaches are disclosed which address this shortcoming, including the broadcast of TIM frames, the partial reception of beacon frames and the use of an embedded TIM frame within a beacon frame.
摘要翻译： 待机模式下的工作站定期唤醒，以检查接入点的缓冲数据。 传统上，通过检查用于交通指示图（TIM）的周期性信标帧，可以获得该信息。 不幸的是，信标的长度随着各种无线标准的进展而不断增加，这些标准要求站长时间唤醒才能检查缓冲数据。 公开了解决这个缺点的几种方法，包括TIM帧的广播，信标帧的部分接收和在信标帧内的嵌入式TIM帧的使用。
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