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1. 发明申请

WO2018200164A1 NULL DATA PACKET (NDP) RANGING MEASUREMENT FEEDBACK 审中-公开
公开(公告)号：WO2018200164A1
公开(公告)日：2018-11-01
申请号：PCT/US2018/026529
申请日：2018-04-06
申请人： MARVELL WORLD TRADE LTD. , MARVELL SEMICONDUCTOR, INC. , CHU, Liwen , SRINIVASA, Sudhir , LOU, Hui-ling
发明人： CHU, Liwen , SRINIVASA, Sudhir , LOU, Hui-ling , ZHANG, Hongyuan , BERGER, Christian, R. , GRANDHE, Niranjan
IPC分类号： G01S5/02 , G01S5/00
CPC分类号： H04W64/003 , G01S5/0036 , G01S5/0063 , G01S5/0236 , G01S5/0257 , H04B7/0452 , H04B7/0636 , H04L25/0202 , H04W84/12
摘要： A first communication device determines which one or more types of feedback information, from among a plurality of types of feedback information associated with a range measurement exchange session, a second communication device is to provide to the first communication device in a feedback packet transmitted as part of the range measurement exchange session. The first communication device transmits to the second communication device one or more indications of the determined one or more types of feedback information that the second communication device is to provide to the first communication device in the feedback packet. The first communication device performs the range measurement exchange, including receiving the feedback packet from the second communication device, wherein the feedback packet includes the determined one or more types of feedback information.

2. 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.

3. 发明申请

WO2020091884A1 NULL DATA PACKET (NDP) ANNOUNCEMENT FRAME FOR NDP RANGING 审中-公开
公开(公告)号：WO2020091884A1
公开(公告)日：2020-05-07
申请号：PCT/US2019/048880
申请日：2019-08-29
申请人： MARVELL WORLD TRADE LTD. , MARVELL SEMICONDUCTOR, INC.
发明人： BERGER, Christian, R. , CHU, Liwen
IPC分类号： G01S11/02 , G01S13/76 , G01S13/74 , H04L27/26
摘要： A first communication device generates a null data packet (NDP) announcement (NDPA) frame to announce a subsequent transmission of one or more NDPs to one or more second communication devices as part of a ranging measurement procedure. The NDPA frame is generated to include a training signal repetition field that specifies a number of instances of a training signal to be included in the one or more NDPs. The first communication device transmits the NDPA frame as part of the ranging measurement procedure. The first communication device generates at least one NDP to include a number of instances of the training signal that equals the number of instances of the training signal indicated by the training signal repetition field in the NDPA, and after transmitting the NDPA frame, transmits the at least one NDP as part of the ranging measurement procedure.

4. 发明申请

WO2019156874A1 SECURE RANGING MEASUREMENT 审中-公开
公开(公告)号：WO2019156874A1
公开(公告)日：2019-08-15
申请号：PCT/US2019/015908
申请日：2019-01-30
申请人： MARVELL WORLD TRADE LTD. , MARVELL SEMICONDUCTOR, INC.
发明人： BERGER, Christian, R. , SRINIVASA, Sudhir , CHU, Liwen , GRANDHE, Niranjan
IPC分类号： H04L27/26 , G01S5/02
摘要： In a range measurement signal exchange session between a first communication device and a second communication device, the first communication device generates an NDP, which includes: generating a plurality of training fields to be used by the second communication device to determine a time of arrival of the NDP. Each training field corresponds to a respective orthogonal frequency divisional multiplexing (OFDM) symbol. Generating the plurality of training fields includes: i) setting signal samples corresponding to guard intervals between the OFDM symbols to zero, and ii) for each OFDM symbol, setting a plurality of frequency domain values corresponding to OFDM subcarriers of the OFDM symbol to complex number values. The first communication device transmits the NDP as part of the range measurement signal exchange session.

5. 发明申请

WO2018048809A1 MULTI-USER RANGING WITH UNASSOCIATED STATIONS 审中-公开
标题翻译：多用户范围与未连接的站点
公开(公告)号：WO2018048809A1
公开(公告)日：2018-03-15
申请号：PCT/US2017/050115
申请日：2017-09-05
申请人： MARVELL SEMICONDUCTOR, INC. , LOU, Hui-Ling
发明人： LOU, Hui-Ling , CHU, Liwen , TAMHAME, Sagar, A. , GRANDHE, Niranjan , BERGER, Christian, R. , ZHANG, Hongyuan
IPC分类号： H04W72/04 , H04W72/06 , H04W72/10 , H04W84/12 , G01S5/02 , H04L5/00 , H04B7/02 , H04B7/0417 , H04B7/0452 , H04W74/00 , H04W72/12 , H04W88/08
摘要： A first communication i) selects one or more respective preliminary identifiers (IDs) for one or more second communication devices, or ii) receives one or more respective preliminary IDs from one or more second communication devices, the one or more respective preliminary IDs having been respectively selected by the one or more second communication devices. The first communication device generates a trigger frame, the trigger frame indicating one or more first frequency resource and/or spatial stream allocations to one or more second communication devices using the one or more respective preliminary IDs. The first communication device transmits the trigger frame to initiate at least an uplink (UL) MU transmission by multiple second communication devices for a ranging procedure.
摘要翻译：第一通信i）为一个或多个第二通信设备选择一个或多个相应的初步标识符（ID），或者ii）从一个或多个第二通信设备接收一个或多个相应的初步标识符，已经分别由一个或多个第二通信设备选择的一个或多个相应初步ID。第一通信设备生成触发帧，触发帧使用一个或多个相应的初步ID向一个或多个第二通信设备指示一个或多个第一频率资源和/或空间流分配。第一通信设备发送触发帧以便通过多个第二通信设备至少发起用于测距过程的上行链路（UL）MU传输。

6. 发明申请

WO2018045330A1 METHOD AND APPARATUS FOR DETERMINING AN ANGLE OF ARRIVAL OF A WIRELESS SIGNAL 审中-公开
标题翻译：确定无线信号到达角度的方法和设备
公开(公告)号：WO2018045330A1
公开(公告)日：2018-03-08
申请号：PCT/US2017/049935
申请日：2017-09-01
申请人： MARVELL SEMICONDUCTOR, INC. , BERGER, Christian, R.
发明人： BERGER, Christian, R. , GRANDHE, Niranjan , SRINIVASA, Sudhir
IPC分类号： G01S3/46
CPC分类号： H04W4/023 , G01S3/14 , G01S3/46 , H04B7/086 , H04L25/022 , H04W56/0065 , H04W84/12
摘要： At an antenna array of a first communication device, a wireless signal transmitted by a second communication device is received. The first communication device calculates a plurality of oversampled matched filter values corresponding to the wireless signal, which correspond to i) different values of a signal delay corresponding to the wireless signal, and ii) different values of a phase corresponding to the wireless signal. The first communication device determines a local maximum of the plurality of oversampled matched filter values across different values of the signal delay and different values of the phase, where the local maximum corresponds to a component of the wireless signal that is first to arrive at the antenna array. The first communication device calculates an angle of arrival of the wireless signal at the antenna array using a value of the phase corresponding to the local maximum of the plurality of matched filter values.
摘要翻译：在第一通信设备的天线阵列处，接收由第二通信设备发送的无线信号。第一通信设备计算对应于无线信号的多个过采样匹配滤波器值，其对应于i）对应于无线信号的信号延迟的不同值，以及ii）与无线信号对应的相位的不同值。第一通信设备确定跨信号延迟的不同值和相位的不同值的多个过采样匹配滤波器值的局部最大值，其中局部最大值对应于首先到达天线的无线信号的分量阵列。第一通信设备使用与多个匹配滤波器值的局部最大值相对应的相位值来计算无线信号在天线阵列处的到达角。

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