专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US10070482B1 Midamble for WLAN PHY frames 有权
公开(公告)号：US10070482B1
公开(公告)日：2018-09-04
申请号：US15645335
申请日：2017-07-10
申请人： Marvell International Ltd.
发明人： Hongyuan Zhang , Rohit U. Nabar , Sudhir Srinivasa , Raja Banerjea , Yong Liu
IPC分类号： H04L12/28 , H04W84/12 , H04L27/26
摘要： A preamble, a first portion of a data payload, a midamble, and a second portion of the data payload of a single data unit are generated. The midamble is to be transmitted subsequent to transmission of the first portion of the data payload and prior to transmission of the second portion of the data payload. The midamble includes an indication of at least one characteristic of the data payload such as an indication of a size of the second portion of the data payload, or whether or not the data payload includes one or more other portions in addition to the first and second portions. A network interface of a communication device is configured to generate the preamble, the first and second portions of the data payload, and the midamble.

2. 发明授权

US09729369B1 Methods and apparatus for transmission of data at different modulation and/or coding rates 有权
公开(公告)号：US09729369B1
公开(公告)日：2017-08-08
申请号：US15282794
申请日：2016-09-30
申请人： MARVELL INTERNATIONAL LTD.
发明人： Hongyuan Zhang , Hui-Ling Lou , Yong Liu , Raja Banerjea
IPC分类号： H04N7/12 , H04J3/04 , H04L27/26 , H04L1/00 , H04L1/06 , H04L25/03
CPC分类号： H04L27/2604 , H04L1/0041 , H04L1/0625 , H04L25/03866 , H04L27/2627
摘要： In a method implemented in a communication device configured to transmit PHY data units via a communication channel, first data and second data is received. The first data is modulated according to a first constellation having a first number of constellation points, and the second data is modulated according to a second constellation having a second number of constellation points higher than the first number of constellation points. The first data and the second data is parsed to a plurality of spatial streams such that a first subset of the spatial streams includes at least some of the modulated first data but none of the modulated second data, and a second subset of the spatial streams includes at least some of the modulated second data but none of the modulated first data. A single PHY data unit that includes the plurality of spatial streams is generated.

3. 发明授权

US09148873B1 Method and apparatus for providing different types of physical layer devices access to a wireless medium 有权
标题翻译：用于提供不同类型的物理层设备访问无线介质的方法和装置
公开(公告)号：US09148873B1
公开(公告)日：2015-09-29
申请号：US13917262
申请日：2013-06-13
申请人： Marvell International Ltd.
发明人： Yong Liu , Hongyuan Zhang
IPC分类号： H04W72/04
CPC分类号： H04W72/04 , H04L1/004 , H04W28/06 , H04W80/02
摘要： A wireless network includes a first station and a second station. The first station includes a media access control circuit configured to provide a frame of data to be transmitted on a communication channel, and a physical layer device configured to receive the frame of data and transmit the frame of data on the communication channel. The frame of data is transmitted according to a first short interframe space (SIFS) or a second SIFS, and the first SIFS has a duration that is different from that of the second SIFS. The second station is configured to determine whether the first station transmitted the frame of data according to the first SIFS or the second SIFS and transmit a response to the frame of data based on the determination of whether the first station transmitted the frame of data according to the first SIFS or the second SIFS.
摘要翻译：无线网络包括第一站和第二站。第一站包括媒体访问控制电路，被配置为提供要在通信信道上发送的数据帧;以及物理层设备，被配置为接收数据帧并在通信信道上发送数据帧。数据帧根据第一短帧间间隔（SIFS）或第二SIFS发送，并且第一SIFS具有与第二SIFS不同的持续时间。第二站被配置为基于第一站是否根据第一SIFS或第二SIFS发送数据帧，确定第一站是否发送数据帧，并根据第第一个SIFS或第二个SIFS。

4. 发明授权

US09918340B1 Enhanced distributed channel access parameter variation within restricted access window 有权
公开(公告)号：US09918340B1
公开(公告)日：2018-03-13
申请号：US14875597
申请日：2015-10-05
申请人： Marvell International Ltd.
发明人： Yong Liu
IPC分类号： H04W48/12 , H04W74/04 , H04W74/08 , H04W48/08 , H04L12/807 , H04W40/24 , H04W88/02
CPC分类号： H04W74/08 , H04L47/27 , H04W40/244 , H04W48/08 , H04W48/12 , H04W74/006 , H04W74/0808 , H04W84/12 , H04W88/02
摘要： A wireless access point includes a medium access control circuit that generates a first traffic indication map announcing a restricted access window (RAW). A physical layer device transmits a first beacon, including the first traffic indication map, over a wireless medium. The RAW begins subsequent to the first beacon and ends prior to the next beacon. During the RAW, the physical layer device accesses the wireless medium using a first set of channel access parameters. Outside of the RAW, the physical layer device accesses the wireless medium using a second set of channel access parameters different than the first set. The second set includes channel access values respectively corresponding to access categories. A first frame, associated with a first access category, is transmitted after waiting for a period of time that is based on a channel access value corresponding to the first access category.

5. 发明授权

US09775097B1 Systems and methods for requesting duty cycle based channel access priorities 有权
公开(公告)号：US09775097B1
公开(公告)日：2017-09-26
申请号：US15254219
申请日：2016-09-01
申请人： Marvell International Ltd.
发明人： Yong Liu
IPC分类号： G06F15/173 , H04W48/08 , H04W8/24 , H04W52/02 , H04W84/12
CPC分类号： H04W48/08 , H04L5/0037 , H04L5/0058 , H04L5/0076 , H04W8/24 , H04W48/02 , H04W52/0209 , H04W52/0219 , H04W84/12 , Y02D70/00 , Y02D70/142 , Y02D70/144 , Y02D70/146
摘要： A client station includes a physical layer device to receive, from an access point, a requirement for assignment to a first power category among a plurality of power categories defined by the access point. Each of the plurality of power categories has a respective access priority associated with access to a communication channel. A request module is to determine whether an operating characteristic of the client station meets the requirement for assignment to the first power category and generate, in response to a determination that the operating characteristic meets the requirement, a request to be assigned to the first power category by the access point. The physical layer device is further to transmit the request to the access point and, based on whether the access point accepts or rejects the request, selectively access the communication channel according to a first access priority associated with the first power category.

6. 发明授权

US09706599B1 Long wireless local area network (WLAN) packets with midambles 有权
公开(公告)号：US09706599B1
公开(公告)日：2017-07-11
申请号：US13689183
申请日：2012-11-29
申请人： MARVELL INTERNATIONAL LTD.
发明人： Hongyuan Zhang , Rohit U. Nabar , Sudhir Srinivasa , Raja Banerjea , Yong Liu
IPC分类号： H04L12/28 , H04W84/12 , H04J11/00
CPC分类号： H04W84/12 , H04J11/0026 , H04L27/2602 , H04L27/2613
摘要： A preamble, a first portion of a data payload, a midamble, and a second portion of the data payload of a single data unit are generated. The midamble is to be transmitted subsequent to transmission of the first portion of the data payload and prior to transmission of the second portion of the data payload. The midamble includes an indication of at least one characteristic of the data payload such as an indication of a size of the second portion of the data payload, or whether or not the data payload includes one or more other portions in addition to the first and second portions. A network interface of a communication device is configured to generate the preamble, the first and second portions of the data payload, and the midamble.

7. 发明授权

US09461858B1 Methods and apparatus for transmission of data at different modulation and/or coding rates 有权
标题翻译：用于以不同调制和/或编码速率传输数据的方法和装置
公开(公告)号：US09461858B1
公开(公告)日：2016-10-04
申请号：US14195185
申请日：2014-03-03
申请人： MARVELL INTERNATIONAL LTD.
发明人： Hongyuan Zhang , Hui-Ling Lou , Yong Liu , Raja Banerjea
IPC分类号： H04N7/12 , H04J3/04 , H04L27/26
CPC分类号： H04L27/2604 , H04L1/0041 , H04L1/0625 , H04L25/03866 , H04L27/2627
摘要： In a method implemented in a communication device configured to transmit PHY data units via a communication channel, first data and second data is received. The first data is modulated according to a first constellation having a first number of constellation points, and the second data is modulated according to a second constellation having a second number of constellation points higher than the first number of constellation points. The first data and the second data is parsed to a plurality of spatial streams such that a first subset of the spatial streams includes at least some of the modulated first data but none of the modulated second data, and a second subset of the spatial streams includes at least some of the modulated second data but none of the modulated first data. A single PHY data unit that includes the plurality of spatial streams is generated.
摘要翻译：在被配置为经由通信信道发送PHY数据单元的通信设备中实现的方法中，接收第一数据和第二数据。根据具有第一数量的星座点的第一星座对第一数据进行调制，并且根据具有高于第一数量星座点的第二数量的星座点的第二星座对第二数据进行调制。第一数据和第二数据被解析为多个空间流，使得空间流的第一子集包括调制的第一数据中的至少一些，但是调制的第二数据中的至少一个，空间流的第二子集包括调制的第二数据中的至少一些，但是没有调制的第一数据。生成包括多个空间流的单个PHY数据单元。

8. 发明授权

US09456446B1 Method and apparatus for facilitating simultaneous transmission from multiple stations 有权
公开(公告)号：US09456446B1
公开(公告)日：2016-09-27
申请号：US14981289
申请日：2015-12-28
申请人： Marvell International Ltd.
发明人： Yong Liu , Hongyuan Zhang
IPC分类号： H04Q9/04 , H04Q9/12 , H04W72/04 , H04W74/04 , H04W84/12
CPC分类号： H04W74/0816 , H04W72/0406 , H04W72/0446 , H04W72/046 , H04W74/006 , H04W74/04 , H04W84/12
摘要： A first communication device determines that each second communication device in a plurality of second communication devices has respective data to be transmitted to the first communication device. The first communication device transmits a request to the plurality of second communication devices to transmit data to the first communication device simultaneously during a transmit opportunity period of the first communication device. The first communication device receives data transmitted simultaneously by the plurality of second communication devices during the transmit opportunity period of the first communication device.

9. 发明授权

US09178745B2 Control mode PHY for WLAN 有权
标题翻译： WLAN的控制模式PHY
公开(公告)号：US09178745B2
公开(公告)日：2015-11-03
申请号：US14044710
申请日：2013-10-02
申请人： MARVELL INTERNATIONAL LTD.
发明人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
IPC分类号： H04L25/49 , H04L29/06 , H04L27/26 , H04L1/00 , H04L1/08
CPC分类号： H04L29/0653 , H04L1/004 , H04L1/0046 , H04L1/0065 , H04L1/08 , H04L5/0007 , H04L27/2602 , H04L27/2613 , H04L27/2617 , H04L27/2621 , H04L27/2626 , H04L27/2636
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, information bits to be included in the PHY data unit are encoded using a forward error correction (FEC) encoder. Also, the information bits are encoded according to a block coding scheme, where m copies of each bit are included in the information bits, and one or more bits in the m copies of each bit are flipped. The information bits are mapped to a plurality of constellation symbols, and a plurality of orthogonal frequency division multiplexing (OFDM) symbols are generated to include the plurality of constellation symbols. The PHY data unit is generated to include the plurality of OFDM symbols.
摘要翻译：在通过通信信道生成用于发送的物理层（PHY）数据单元的方法中，使用前向纠错（FEC）编码器对要包括在PHY数据单元中的信息比特进行编码。此外，信息比特根据块编码方案进行编码，其中每个比特的m个副本被包括在信息比特中，并且每个比特的m个副本中的一个或多个比特被翻转。信息比特被映射到多个星座符号，并且生成多个正交频分复用（OFDM）符号以包括多个星座符号。生成PHY数据单元以包括多个OFDM符号。

10. 发明授权

US09100074B1 Beamforming training techniques for MIMO systems 有权
标题翻译： MIMO系统的波束成形训练技术
公开(公告)号：US09100074B1
公开(公告)日：2015-08-04
申请号：US14171773
申请日：2014-02-03
申请人： Marvell International Ltd.
发明人： Hongyuan Zhang , Hui-Ling Lou , Yong Liu , Songping Wu
IPC分类号： H04B7/00 , H04B7/06
CPC分类号： H04B7/0617 , H04B7/0626 , H04B7/0634
摘要： A first communication device receives a plurality of training signals associated with a transmit beamforming training portion of a current iteration of a beamforming procedure between the first communication device and a second communication device. A receive antenna weight vector (AWV) is applied to an antenna array as each of the plurality of training signals is received. A channel estimate is determined based on reception of the plurality of training signals, and feedback is determined based on the channel estimate. The feedback is transmitted to the second communication device as part of the current iteration of the beamforming procedure.
摘要翻译：第一通信设备接收与第一通信设备和第二通信设备之间的波束形成过程的当前迭代的发射波束形成训练部分相关联的多个训练信号。接收天线权重向量（AWV）被施加到天线阵列，因为接收到多个训练信号中的每一个。基于多个训练信号的接收来确定信道估计，并且基于信道估计来确定反馈。作为波束形成过程的当前迭代的一部分，反馈被传送到第二通信设备。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式