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51. 发明申请

WO2009139989A1 PHY PREAMBLE FORMAT FOR WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译： PHY无线通信系统的前缀格式
公开(公告)号：WO2009139989A1
公开(公告)日：2009-11-19
申请号：PCT/US2009/039724
申请日：2009-04-07
申请人： MARVELL WORLD TRADE LTD. , ZHANG, Hongyuan , NABAR, Rohit, U. , WU, Songping
发明人： ZHANG, Hongyuan , NABAR, Rohit, U. , WU, Songping
IPC分类号： H04B1/707 , H04L27/26
CPC分类号： H04W56/001 , H04B1/7073 , H04B1/70735 , H04B2201/7073 , H04J13/0014 , H04J13/10 , H04L5/0016 , H04L27/2613 , H04L27/262 , H04L27/2656 , H04L27/2662 , H04W56/00
摘要： A system and method of extracting data from data packets transmitted over a wireless network includes receiving a data packet having a preamble portion and a payload portion. The preamble portion is cross correlated with a first known spreading sequence to generate a first timing signal and the preamble portion is cross correlated with a second known spreading signal to generate a frame timing signal. An impulse is detected in the first timing signal and a first timing parameter is set based upon the detected impulse in the first timing signal. An impulse is detected in the frame timing signal and a frame timing parameter is set based upon the detected impulse in the frame timing signal. Data is extracted from the received payload portion according to the first timing parameter and the frame timing parameter.
摘要翻译：从通过无线网络发送的数据分组中提取数据的系统和方法包括：接收具有前同步码部分和有效载荷部分的数据分组。前导码部分与第一已知扩展序列交叉相关，以产生第一定时信号，并且前同步码部分与第二已知扩展信号交叉相关，以产生帧定时信号。在第一定时信号中检测到脉冲，并且基于第一定时信号中检测到的脉冲设置第一定时参数。在帧定时信号中检测到脉冲，并且基于帧定时信号中检测到的脉冲设置帧定时参数。根据第一定时参数和帧定时参数从接收到的有效载荷部分提取数据。

52. 发明申请

WO2009099949A3 METHODS, TRANSMITTER AND RECEIVER FOR CHANNEL SOUNDING AND ESTIMATION FOR ANTENNA SELECTION IN MIMO SYSTEMS 审中-公开
公开(公告)号：WO2009099949A3
公开(公告)日：2009-08-13
申请号：PCT/US2009/032659
申请日：2009-01-30
申请人： MARVELL WORLD TRADE LTD. , ZHANG, Hongyuan , NABAR, Rohit, U. , LOC, Peter
发明人： ZHANG, Hongyuan , NABAR, Rohit, U. , LOC, Peter
IPC分类号： H04B7/08 , H04L27/26 , H04L25/02 , H04W52/42
摘要： Techniques and devices for antenna selection in a multiple-input-multiple- output (MIMO) system, in which communication is between a transmitter having a first plurality of radio-frequency (RF) chains coupled to a first plurality of antennas and a receiver having a second plurality of RF chains coupled to a second plurality of antennas, are provided. Techniques include receiving consecutive sounding packets each have a training symbol and that collectively sound a full-size channel for the MIMO system. A sub-channel estimate for each sounding packet can then be determined based on various factors, such as a known power level rule and gain factor. Scaling factors may be applied to each of these sub-channel estimates to produce a scaled sub-channel estimates.

53. 发明申请

WO2019207425A1 PILOTS FOR WIRELESS ACCESS IN VEHICULAR ENVIRONMENTS 审中-公开
公开(公告)号：WO2019207425A1
公开(公告)日：2019-10-31
申请号：PCT/IB2019/053184
申请日：2019-04-17
申请人： MARVELL WORLD TRADE LTD.
发明人： CAO, Rui , ZHANG, Hongyuan , ZHENG, Xiayu , LOU, Hui-Ling
IPC分类号： H04L5/00 , H04L27/26
摘要： A method for communication over a wireless interface between transceivers that are moving with respect to each other. The method includes transmitting, by a communication station (STA, 22) in a moving vehicle (24) over a wireless channel to a receiver (26, 30) outside the vehicle, a sequence of data symbols (62) encoded in accordance with a frequency-domain multiplexing scheme extending over a range of sub-carrier tones (64). A condition affecting the wireless channel is evaluated. Responsively to the evaluated condition, a pilot scheme (74, 76) is selected from among a plurality of available pilot schemes, for interleaving of pilot signals in specified sub-carrier tones (66) of the data symbols. An indication of the selected pilot scheme is exchanged between the STA and the receiver. The pilot signals are interleaved in the transmitted data symbols in accordance with the selected pilot scheme.

54. 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.

55. 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.

56. 发明申请

WO2019152564A1 OPERATION WITH BANDWIDTH-LIMITED DEVICES IN A WIRELESS NETWORK 审中-公开
公开(公告)号：WO2019152564A1
公开(公告)日：2019-08-08
申请号：PCT/US2019/015921
申请日：2019-01-30
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , WANG, Lei , ZHANG, Hongyuan , SUN, Yakun , JIANG, Jinjing , LOU, Hui-Ling
发明人： CHU, Liwen , WANG, Lei , ZHANG, Hongyuan , SUN, Yakun , JIANG, Jinjing , LOU, Hui-Ling
IPC分类号： H04L29/08 , H04W72/04 , H04W84/12 , H04L5/00
摘要： A first communication device allocates respective portions of a communication channel, that includes at least one primary component channel and one or more non-primary component channels, to a plurality of second communication devices, including a bandwidth-limited second communication device configured to operate with a maximum bandwidth that is less than a full bandwidth of the communication channel. The bandwidth-limited second communication device is operating in a particular component channel, and allocation of a frequency portion to the bandwidth-limited second communication device is restricted to the particular component channel. The first communication device transmits a data unit that includes one or both of: respective data for the second communication devices in the respective frequency portions allocated to the respective second communication devices, and one or more trigger frames to prompt transmission of respective data by the second communication devices in the respective frequency portions allocated to the respective second communication devices.

57. 发明申请

WO2018200682A1 LOW POWER WAKEUP IN A WIRELESS NETWORK 审中-公开
公开(公告)号：WO2018200682A1
公开(公告)日：2018-11-01
申请号：PCT/US2018/029375
申请日：2018-04-25
申请人： MARVELL WORLD TRADE LTD. , CHU, Liwen , JIANG, Jinjing , MU, Hua , ZHANG, Hongyuan , LOU, Hui-Ling
发明人： CHU, Liwen , JIANG, Jinjing , MU, Hua , ZHANG, Hongyuan , LOU, Hui-Ling
IPC分类号： H04W52/02
摘要： A first communication device transmits a first packet that includes a wakeup request packet configured to prompt a wakeup radio at a second communication device to prompt a network interface device of the second communication device to transition from a low power state to an active state. The first communication device measures a delay period after an end of transmission of the first packet. The delay period corresponds to a time required for the network interface device of the second communication device to transition from the low power state to the active state. After at least the delay period, the first communication device transmits the second packet.

58. 发明申请

WO2018165599A8 SYSTEMS AND METHODS FOR SEGMENTATION AND REASSEMBLY OF DATA FRAMES IN 802.11 WIRELESS LOCAL AREA NETWORKS 审中-公开
公开(公告)号：WO2018165599A8
公开(公告)日：2018-09-13
申请号：PCT/US2018/021824
申请日：2018-03-09
申请人： MARVELL WORLD TRADE LTD.
发明人： JIANG, Jinjin , CHU, Liwen , ZHANG, Hongyuan , LOU, Hui-Ling
IPC分类号： H04L12/805 , H04L12/801
摘要： Embodiments described herein provide a method for fragmenting and reassembling data frames on a medium access control (MAC) layer in a wireless local area network. A datagram is received from an application running on a first network device, for transmission over a wireless communication link in the wireless local area network. A negotiation request is initiated with a second network device for determining whether both the first network device and the second network device have enhanced directional multi-gigabit capability (EMDG) for data segmentation and reassembly. When both devices have EMDG capability and the size of the datagram exceeds the maximum size defined by the wireless local area network transmission protocol, the datagram is segmented into a plurality of transmission data units on the MAC layer.

59. 发明申请

WO2017070673A1 A STRUCTURE FOR LOW-POWER-LOW-RATE DATA TRANSMISSION 审中-公开
标题翻译：低功率低速率数据传输的结构
公开(公告)号：WO2017070673A1
公开(公告)日：2017-04-27
申请号：PCT/US2016/058466
申请日：2016-10-24
申请人： MARVELL WORLD TRADE LTD. , SUN, Yakun , ZHANG, Hongyuan , WANG, Lei , LOU, Hui-Ling
发明人： SUN, Yakun , ZHANG, Hongyuan , WANG, Lei , LOU, Hui-Ling
IPC分类号： H04L27/26
CPC分类号： H04L69/22 , H04L27/2613 , H04W4/70 , H04W72/0453 , H04W72/0473 , H04W84/12 , Y02D70/142
摘要： Embodiments described herein provides a system for detecting data received in a low power low rate (LPLR) data frame format. The system includes a receiver and control circuitry. The receiver is configured to receive a data frame comprising an LPLR preamble portion and an LPLR data portion following the LPLR preamble portion. The LPLR preamble portion and the LPLR data portion occupy a bandwidth that is less than an allowed bandwidth. The control circuitry is configured to determine a mode of the data frame based on whether the data frame has an additional portion, and detect a data field in the LPLR preamble portion from the data frame based on the mode of the data frame.
摘要翻译：这里描述的实施例提供了用于检测以低功率低速率（LPLR）数据帧格式接收的数据的系统。该系统包括一个接收器和控制电路。接收器被配置为接收包括LPLR前导码部分和LPLR前导码部分之后的LPLR数据部分的数据帧。 LPLR前导码部分和LPLR数据部分占用小于允许带宽的带宽。控制电路被配置为基于数据帧是否具有附加部分来确定数据帧的模式，并且基于数据帧的模式从数据帧检测LPLR前导码部分中的数据字段。

60. 发明申请

WO2017044956A1 SYSTEMS AND METHODS FOR CROSS-CHANNEL SCHEDULING OF HIGH EFFICIENCY (HE) MULTI-USER (MU) FRAME TRANSMISSION 审中-公开
标题翻译：用于高效率（MU）多帧（MU）帧传输的交叉通道调度的系统和方法
公开(公告)号：WO2017044956A1
公开(公告)日：2017-03-16
申请号：PCT/US2016/051333
申请日：2016-09-12
申请人： MARVELL WORLD TRADE LTD. , SUN, Yakun , ZHANG, Hongyuan , WANG, Lei
发明人： SUN, Yakun , ZHANG, Hongyuan , WANG, Lei
IPC分类号： H04W72/04 , H04W28/08
CPC分类号： H04L5/0044 , H04W28/085 , H04W72/0453 , H04W72/0486
摘要： Embodiments described herein provide a method for cross-channel scheduling of high efficiency (HE) multi-user (MU) frame transmission. In some embodiments, channel information and client station information may be obtained for data transmission. An MU frame containing a data field of a first type and two data fields of a second type may be configured to carry scheduling information relating to one or more channels for the data transmission. It may be determined that a current scheduling setting of the two data fields of the second type leads to unbalanced payload between the one or more channels. The two data fields of the second type may then be adjusted for a balanced channel mapping, and the data field of the first type may be adjusted to reflect the balanced channel mapping. Data based on the adjusted data field of the first type and the adjusted two data fields of the second type may be transmitted via the one or more channels.
摘要翻译：本文描述的实施例提供了一种用于高效率（多用户）（MU）帧传输的跨信道调度的方法。在一些实施例中，可以获得用于数据传输的信道信息和客户端站信息。包含第一类型的数据字段和第二类型的两个数据字段的MU帧可以被配置为携带与用于数据传输的一个或多个信道有关的调度信息。可以确定第二类型的两个数据域的当前调度设置导致一个或多个信道之间的不平衡有效载荷。然后可以调整第二类型的两个数据字段用于平衡信道映射，并且可以调整第一类型的数据字段以反映平衡信道映射。可以经由一个或多个信道来发送基于第一类型的调整数据字段和第二类型的经调整的两个数据字段的数据。

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