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    • 45. 发明申请
    • WIRELESS CHANNEL CALIBRATION
    • 无线通道校准
    • WO2010124232A2
    • 2010-10-28
    • PCT/US2010/032272
    • 2010-04-23
    • QUALCOMM IncorporatedWENTINK, Maarten MenzoVAN ZELST, Albert
    • WENTINK, Maarten MenzoVAN ZELST, Albert
    • H04L5/00
    • H04B17/0062H04B7/0617H04B17/21
    • 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.
    • 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。
    • 46. 发明申请
    • COMMUNICATING WITH EXTENDED RANGE IN A WIRELESS NETWORK
    • 在无线网络中与扩展范围通信
    • WO2013028627A1
    • 2013-02-28
    • PCT/US2012/051604
    • 2012-08-20
    • QUALCOMM INCORPORATEDABRAHAM, Santosh PaulMERLIN, SimoneWENTINK, Maarten MenzoVAN NEE, Didier Johannes Richard
    • ABRAHAM, Santosh PaulMERLIN, SimoneWENTINK, Maarten MenzoVAN NEE, Didier Johannes Richard
    • H04W74/08
    • H04L1/0001H04L5/0055H04W16/26H04W24/08H04W74/0816H04W74/085H04W88/02H04W88/08
    • Supporting communication over an extended range in a wireless network. In one aspect, a station (e.g. access point) sends multiple messages (a first and a second CTS) of a given type (i.e. non-extended range, NR, and extended range, ER) for stations operating on different operating modes (NR and ER stations) on reception of another message (RTS message). The messages sent can be detected by stations with different capabilities (i.e. NR and ER), which may avoid collisions between stations. In more concrete terms, a first station receives a Request-to-Send (RTS) message from a second station having data to send. The first station sends a first Clear-to-Send (CTS) message and also a second CTS message in response to the RTS message. The second CTS message has an extended range as compared to the first CTS message. The first station thereafter (i) receives data sent by the second station in response to the second CTS message and (ii) sends an acknowledgement having an extended range. In a different embodiment, energy measurements covering multiple time slots are made during a backoff procedure to support extended and non-extended stations coexistence.
    • 支持无线网络中扩展范围的通信。 在一个方面,站(例如接入点)为在不同操作模式(NR)上操作的站发送给定类型(即非扩展范围,NR和扩展范围ER)的多个消息(第一和第二CTS) 和ER站)接收另一个消息(RTS消息)。 所发送的消息可以由具有不同能力的站(即NR和ER)检测,这可以避免站之间的冲突。 更具体地说,第一站从具有要发送数据的第二站接收请求发送(RTS)消息。 第一站响应于RTS消息发送第一个清除发送(CTS)消息和第二个CTS消息。 与第一个CTS消息相比,第二个CTS消息具有扩展的范围。 此后,第一站(i)响应于第二CTS消息接收由第二站发送的数据,并且(ii)发送具有扩展范围的确认。 在不同的实施例中,覆盖多个时隙的能量测量在退避过程期间进行以支持扩展和非扩展站共存。
    • 48. 发明申请
    • PHYSICAL LAYER POWER SAVE FACILITY WITH RANDOM OFFSET
    • 物理层省电随机偏移设备
    • WO2012068384A2
    • 2012-05-24
    • PCT/US2011/061206
    • 2011-11-17
    • QUALCOMM IncorporatedWENTINK, Maarten Menzo
    • WENTINK, Maarten Menzo
    • H04W52/02
    • H04W52/0216Y02D70/00Y02D70/142Y02D70/164
    • 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.
    • 本公开的某些方面提供了使用随机偏移来实现功率节省的方法和设备。 对于某些方面,可以在将部分AID输入到物理层(PHY)报头的9位字段之前将基本服务集(BSS)特定的偏移添加到(部分)关联标识符(AID)(例如, NSTS字段的位13-21)。 BSS特定的偏移量可以由接入点(AP)随机选择并且通过关联响应用信号发送给相关联的站(STA),或者偏移量可以经由其他手段传送给STA。 以这种方式,用于下行链路传输的9比特字段中的值很可能与一个BSS到下一个BSS的值不同,从而允许STA仅在帧被传送给它们时保持清醒。