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21. 发明申请

WO2018187725A1 RANGING MEASUREMENTS IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
公开(公告)号：WO2018187725A1
公开(公告)日：2018-10-11
申请号：PCT/US2018/026517
申请日：2018-04-06
申请人： MARVELL WORLD TRADE LTD. , MARVELL SEMICONDUCTOR, INC. , CHU, Liwen , LOU, Hui-Ling
发明人： CHU, Liwen , LOU, Hui-Ling , TAMHANE, Sagar , ZHANG, Hongyuan , BERGER, Christian , GRANDHE, Niranjan , SRINIVASA, Sudhi
IPC分类号： G01S5/02 , G01S5/14 , G01S13/76 , H04W64/00
摘要： During a service period (SP) for a ranging measurement signal exchange between a first communication device and one or more second communication devices, the first communication device receives respective first null data packets (NDPs) from the one or more second communication devices, and transmits respective second NDPs to the one or more second communication devices. The first communication device transmits, during the SP, respective first ranging measurement feedback packets to the one or more second communication devices to allow each of the one or more second communication devices to determine a time-of-flight between the first communication device and the second communication device and/or receives, during the SP, respective second ranging measurement feedback packets from the one or more second communication devices to allow the first communication device to determine respective times-of-flight between the first communication device and the one or more second communication devices.

22. 发明申请

WO2019147319A1 ERROR RECOVERY IN NULL DATA PACKET (NDP) RANGING 审中-公开
公开(公告)号：WO2019147319A1
公开(公告)日：2019-08-01
申请号：PCT/US2018/058931
申请日：2018-11-02
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , LOU, Hui-ling , ZHANG, Hongyuan
发明人： CHU, Liwen , LOU, Hui-ling , ZHANG, Hongyuan
IPC分类号： G01S5/14 , G01S5/00 , G01S5/12 , G01S3/46
摘要： A first communication device transmits a first physical layer protocol data units (PPDU) that includes a first null data packet announcement (NDPA) frame as part of a first ranging measurement exchange. The first communication device transmits a first null data packet (NDP) as part of the first ranging measurement exchange, and records a transmit time of the first NDP. The first communication device determines whether a second NDP was received correctly from a second communication device as part of the first ranging measurement exchange. In response to determining that the second NDP was not received correctly, the first communication device commences a second ranging measurement exchange, including transmitting a second PPDU that includes a second NDPA frame as part of the second ranging measurement exchange.

23. 发明申请

WO2019032399A1 MULTI-USER NULL DATA PACKET (NDP) RANGING 审中-公开
公开(公告)号：WO2019032399A1
公开(公告)日：2019-02-14
申请号：PCT/US2018/045182
申请日：2018-08-03
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , ZHANG, Hongyuan , BERGER, Christian, R. , GRANDHE, Niranjan , SRINIVASA, Sudhir , LOU, Hui-Ling
发明人： CHU, Liwen , ZHANG, Hongyuan , BERGER, Christian, R. , GRANDHE, Niranjan , SRINIVASA, Sudhir , LOU, Hui-Ling
IPC分类号： H04W64/00
摘要： A first communication device prompts a plurality of second communication devices to transmit, during a contiguous time period reserved for a range measurement exchange, respective first null data packets (NDPs) at respective times. The first communication device receives first NDPs from at least some of the second communication devices during the contiguous time period, and transmits one or more second NDPs to the plurality of second communication devices. The first communication device uses reception of the first NDPs and transmission of the one or more second NDPs to determine respective ranges between the first communication device and respective second communication devices.

24. 发明申请

WO2015134741A1 METHOD AND APPARATUS FOR ESTIMATING DISTANCE BETWEEN NETWORK DEVICES IN A WIRELESS NETWORK 审中-公开
标题翻译：估计无线网络中网络设备之间的距离的方法和装置
公开(公告)号：WO2015134741A1
公开(公告)日：2015-09-11
申请号：PCT/US2015/018955
申请日：2015-03-05
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , TAMHANE, Sagar A. , WAGHOLIKAR, Sarang Shrikrishna , ZHANG, Hongyuan , LOU, Hui-Ling
发明人： CHU, Liwen , TAMHANE, Sagar A. , WAGHOLIKAR, Sarang Shrikrishna , ZHANG, Hongyuan , LOU, Hui-Ling
IPC分类号： G01S5/00 , H04W64/00
CPC分类号： H04W24/10 , G01S13/74 , H04L67/104 , H04W4/38 , H04W64/00 , H04W84/12
摘要： A first wireless communication device including a timing module and a fine timing measurement module. The timing module is configured to provide a first timer value. The fine timing measurement module is configured to receive, from a second wireless communication device, a first request to perform a fine timing measurement to determine a distance between the first wireless communication device and the second wireless communication device, and transmit a first response including a first time to start a burst period for performing the fine timing measurement. The first time is one of included in the request received from the second wireless communication device and based on the first timer value. The fine timing measurement module is further configured to perform the fine timing measurement in the burst period starting at the first time.
摘要翻译：一种包括定时模块和精细定时测量模块的第一无线通信设备。定时模块被配置为提供第一定时器值。精细定时测量模块被配置为从第二无线通信设备接收执行精细定时测量以确定第一无线通信设备和第二无线通信设备之间的距离的第一请求，并且发送包括首先开始进行精细定时测量的脉冲串周期。第一次是包括在从第二无线通信设备接收的请求中并且基于第一定时器值。精确定时测量模块还被配置为在从第一次开始的突发时段中执行精细定时测量。

25. 发明申请

WO2015081132A1 ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS FOR WIRELESS LOCAL AREA NETWORK 审中-公开
标题翻译：无线局域网的正交频分多址
公开(公告)号：WO2015081132A1
公开(公告)日：2015-06-04
申请号：PCT/US2014/067483
申请日：2014-11-25
申请人： MARVELL WORLD TRADE LTD. , ZHANG, Hongyuan , SUN, Yakun , LOU, Hui-ling , CHU, Liwen
发明人： ZHANG, Hongyuan , SUN, Yakun , LOU, Hui-ling , CHU, Liwen
IPC分类号： H04L27/26
CPC分类号： H04W72/0453 , H04L5/0007 , H04L5/0041 , H04L5/0044 , H04L5/006 , H04L27/2602 , H04L27/2613 , H04L27/2627 , H04W84/12
摘要： A method for generating an orthogonal frequency division multiple access (OFDMA) data unit is described. A plurality of different orthogonal frequency division multiplex (OFDM) tone blocks for a wireless local area network (WLAN) communication channel are assigned to a plurality of devices including a first device and second device. The plurality of different OFDM tone blocks includes at least a first OFDM tone block assigned to the first device and a second OFDM tone block assigned to the second device. The first OFDM tone block and the second OFDM tone block together span a bandwidth equal to a smallest channel bandwidth of a legacy WLAN communication protocol. An OFDMA data unit is generated for the WLAN communication channel. The OFDMA unit includes a preamble portion and a data portion. The preamble portion has i) at least a legacy portion that spans the entire WLAN communication channel, ii) a first non-legacy portion that spans the first OFDM tone block, and iii) a second non-legacy portion that spans the second OFDM tone block.
摘要翻译：描述了一种用于产生正交频分多址（OFDMA）数据单元的方法。用于无线局域网（WLAN）通信信道的多个不同的正交频分复用（OFDM）音调块被分配给包括第一设备和第二设备的多个设备。多个不同的OFDM音调块至少包括分配给第一设备的第一OFDM音调块和分配给第二设备的第二OFDM音调块。第一OFDM音调块和第二OFDM音调块一起跨越等于传统WLAN通信协议的最小信道带宽的带宽。为WLAN通信信道生成OFDMA数据单元。 OFDMA单元包括前导码部分和数据部分。前导码部分具有i）至少跨越整个WLAN通信信道的传统部分，ii）跨越第一OFDM音调块的第一非传统部分，以及iii）跨越第二OFDM音调的第二非传统部分块。

26. 发明申请

WO2019194856A1 BASIC SERVICE SET (BSS) COLOR IN NULL DATA PACKET (NDP) RANGING 审中-公开
公开(公告)号：WO2019194856A1
公开(公告)日：2019-10-10
申请号：PCT/US2018/044684
申请日：2018-07-31
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , BERGER, Christian R. , GRANDHE, Niranjan , ZHANG, Hongyuan , LOU, Hui-Ling
发明人： CHU, Liwen , BERGER, Christian R. , GRANDHE, Niranjan , ZHANG, Hongyuan , LOU, Hui-Ling
IPC分类号： H04W24/00 , H04W88/00
摘要： A communication device determines an identifier of a wireless network with which the communication device is not associated. While the communication device is not associated with the wireless network, the communication device participates in a ranging procedure with an access point (AP) of the wireless network. The ranging procedure is for estimating a distance between the communication device and the AP based on measuring times of flight of transmissions between the communication device and the AP. Participating in the ranging procedure includes: the communication device transmitting a packet to the AP as part of the ranging procedure. The packet includes a PHY preamble, and the PHY preamble includes a signal field. The signal field includes a wireless network identifier subfield set to the identifier of the wireless network.

27. 发明申请

WO2019182685A1 SYSTEMS AND METHODS FOR GENERATING AND TRANSMITTING SHORT LOW POWER WAKE-UP REQUEST (WUR) FRAMES IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2019182685A1
公开(公告)日：2019-09-26
申请号：PCT/US2019/016066
申请日：2019-01-31
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , ZHANG, Hongyuan , LOU, Hui-ling
发明人： CHU, Liwen , ZHANG, Hongyuan , LOU, Hui-ling
IPC分类号： H04W52/02
摘要： Embodiments described herein provide a method for creating a low power wake-up radio frame. The method comprises generating, at an access point, a wake-up radio frame for transmission to one or more client stations, determining whether the wake-up radio frame is to be transmitted inside or outside a basic service set associated with the access point, the basic service set having a basic service set identifier that is used to identify the access point. And in response to determining that the wake-up radio frame is to be transmitted outside the basic service set, computing, a target frame check sequence for the wake-up radio frame without using the basic service set identifier associated with the basic service set, appending the target frame check sequence to the wake-up radio frame; and transmitting, to one or more client stations, the wake-up radio frame with the appended target frame check sequence.

28. 发明申请

WO2015073543A1 METHOD AND APPARATUS FOR SYNCHRONIZING TIMING AMONG DEVICES IN A WIRELESS LOCAL AREA NETWORK (WLAN) 审中-公开
标题翻译：用于在无线局域网（WLAN）中同步设备的时序的方法和装置
公开(公告)号：WO2015073543A1
公开(公告)日：2015-05-21
申请号：PCT/US2014/065228
申请日：2014-11-12
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , LOU, Hui-Ling , ZHANG, Hongyuan
发明人： CHU, Liwen , LOU, Hui-Ling , ZHANG, Hongyuan
IPC分类号： H04W56/00
CPC分类号： H04W56/001 , H04W40/244 , H04W56/0015 , H04W72/0446 , H04W84/12
摘要： A wireless communication device including a first media access control device and a first transceiver. The first media access control device is configured to selectively generate a first timestamp having a first length and a second timestamp having a second length. The first timestamp indicates a first synchronization time of the wireless communication device, the second timestamp indicates only a first portion of the first synchronization time, and the first synchronization time is used by a client station to synchronize timing between the wireless communication device and the client station. The first media access control device is further configured to generate a beacon including either the first timestamp or the second timestamp, and an indication of whether the beacon includes the first timestamp or the second timestamp. The first transceiver is configured to transmit the beacon from the wireless communication device to the client station.
摘要翻译：一种无线通信设备，包括第一媒体接入控制设备和第一收发机。第一媒体访问控制设备被配置为选择性地生成具有第一长度的第一时间戳和具有第二长度的第二时间戳。第一时间戳指示无线通信设备的第一同步时间，第二时间戳仅指示第一同步时间的第一部分，并且客户端使用第一同步时间来同步无线通信设备和客户端之间的定时站。第一媒体访问控制设备还被配置为生成包括第一时间戳或第二时间戳的信标，以及信标是否包括第一时间戳或第二时间戳的指示。第一收发器被配置为将信标从无线通信设备发送到客户站。

29. 发明申请

WO2015070230A1 MEDIUM ACCESS CONTROL FOR MULTI-CHANNEL OFDM IN A WIRELESS LOCAL AREA NETWORK 审中-公开
标题翻译：无线局域网中多信道OFDM的中等接入控制
公开(公告)号：WO2015070230A1
公开(公告)日：2015-05-14
申请号：PCT/US2014/065049
申请日：2014-11-11
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , ZHANG, Hongyuan , LOU, Hui-Ling , SUN, Yakun
发明人： CHU, Liwen , ZHANG, Hongyuan , LOU, Hui-Ling , SUN, Yakun
IPC分类号： H04L5/00
CPC分类号： H04W72/005 , H04L5/0007 , H04L5/0037 , H04L5/0055 , H04W84/12
摘要： A first communication device allocates respective sub-channels of an orthogonal frequency division multiplexing (OFDM) channel to two or more second communication devices for uplink orthogonal frequency division multiple access (OFDMA) transmission from the two or more second communication devices. A first sub-channel is allocated to a first one of the second communication devices and a second sub-channel is allocated to a second one of the second communication devices. The first communication device provides, to the second communication devices, indications of the respective sub¬ channels allocated to the second communication devices. The first communication device receives an uplink OFDMA data unit that includes a first OFDM data unit transmitted from the first one of the second communication devices via the first sub¬ channel, and a second OFDM data unit transmitted from the second one of the second communication devices via the second sub-channel.
摘要翻译：第一通信设备从两个或更多个第二通信设备将正交频分复用（OFDM）信道的各个子信道分配给用于上行正交频分多址（OFDMA）传输的两个或更多个第二通信设备。第一子信道被分配给第二通信设备中的第一通信设备，并且第二子信道被分配给第二通信设备中的第二通信设备。第一通信设备向第二通信设备提供分配给第二通信设备的相应子信道的指示。第一通信设备接收上行OFDMA数据单元，其包括经由第一子信道从第一通信设备中的第一通信设备发送的第一OFDM数据单元和从第二通信设备中的第二通信设备发送的第二OFDM数据单元通过第二子通道。

30. 发明申请

WO2015081259A2 COEXISTENCE TECHNIQUES FOR WIDE AREA NETWORK DEVICES OPERATING IN UNLICENSED BANDS 审中-公开
标题翻译：用于不经授权的银行操作的宽域网络设备的共同技术
公开(公告)号：WO2015081259A2
公开(公告)日：2015-06-04
申请号：PCT/US2014/067713
申请日：2014-11-26
申请人： MARVELL SEMICONDUCTOR, INC. , ZHANG, Hongyuan , LOU, Hui-ling
发明人： ZHANG, Hongyuan , LOU, Hui-ling , SUN, Yakun , XU, Mingguang , CHU, Liwen
IPC分类号： H04W16/16
CPC分类号： H04W72/0453 , H04W16/16 , H04W48/16 , H04W72/02 , H04W88/06
摘要： A communication device is configured to operate in a first wireless communication network that utilizes a communication protocol developed for use in frequency bands that are licensed by a government entity for wireless communication applications. The communication device determines whether one or more communication channels in an unlicensed frequency band are not being utilized by any second wireless communication networks, wherein the government entity does not require licenses to use the unlicensed frequency band. In response to determining that one or more communication channels in the unlicensed frequency band are not being utilized by any second wireless communication networks, the communication device selects a set of one or more communication channels in the one or more communication channels for use by the first wireless communication network, and utilizes the set of one or more communication channels for communications in the first wireless communication network.
摘要翻译：通信设备被配置为在第一无线通信网络中操作，所述第一无线通信网络利用被开发用于由政府实体许可用于无线通信应用的频带的通信协议。通信设备确定未授权频带中的一个或多个通信信道是否不被任何第二无线通信网络利用，其中政府实体不需要许可证来使用未经许可的频带。响应于确定未许可频带中的一个或多个通信信道没有被任何第二无线通信网络利用，通信设备选择一个或多个通信信道中的一个或多个通信信道的集合以供第一个无线通信网络，并且利用一组一个或多个通信信道用于第一无线通信网络中的通信。

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