公开(公告)号：US08774142B2

公开(公告)日：2014-07-08

申请号：US12875518

申请日：2010-09-03

申请人： Sridhar Rajagopal ,  Doyoung Kim ,  Ying Li ,  Farooq Khan

发明人： Sridhar Rajagopal ,  Doyoung Kim ,  Ying Li ,  Farooq Khan

IPC分类号： H04W4/00 ,  H04B7/00 ,  H04J3/26 ,  H04L12/413 ,  H04L12/403

CPC分类号： H04B10/116 ,  H04B10/114 ,  H04L69/324

摘要： For use in a visible light communication (VLC) network, a system and method for communicating a plurality of medium access control (MAC) frames. The method includes providing a single frame structure to support a plurality of topologies, the plurality of topologies including peer-to-peer, broadcast, star and visibility topologies. The method also includes transmitting a plurality of frames comprising a plurality of frame types, the plurality of frame types comprising data, beacon, command, acknowledgement, and color-visibility-dimming (CVD) frames.

摘要翻译： 用于可见光通信（VLC）网络中的用于传送多个介质访问控制（MAC）帧的系统和方法。 该方法包括提供单个帧结构以支持多个拓扑，所述多个拓扑包括点对点，广播，星形和可视性拓扑。 该方法还包括发送包括多个帧类型的多个帧，所述多个帧类型包括数据，信标，命令，确认和颜色可见度调光（CVD）帧。

公开(公告)号：US20110064405A1

公开(公告)日：2011-03-17

申请号：US12875518

申请日：2010-09-03

申请人： Sridhar Rajagopal ,  Doyoung Kim ,  Ying Li ,  Farooq Khan

发明人： Sridhar Rajagopal ,  Doyoung Kim ,  Ying Li ,  Farooq Khan

IPC分类号： H04J14/00 ,  H04B10/00

CPC分类号： H04B10/116 ,  H04B10/114 ,  H04L69/324

摘要： For use in a visible light communication (VLC) network, a system and method for communicating a plurality of medium access control (MAC) frames. The method includes providing a single frame structure to support a plurality of topologies, the plurality of topologies including peer-to-peer, broadcast, star and visibility topologies. The method also includes transmitting a plurality of frames comprising a plurality of frame types, the plurality of frame types comprising data, beacon, command, acknowledgement, and color-visibility-dimming (CVD) frames.

摘要翻译： 用于可见光通信（VLC）网络中的用于传送多个介质访问控制（MAC）帧的系统和方法。 该方法包括提供单个帧结构以支持多个拓扑，所述多个拓扑包括点对点，广播，星形和可视性拓扑。 该方法还包括发送包括多个帧类型的多个帧，所述多个帧类型包括数据，信标，命令，确认和颜色可见度调光（CVD）帧。

公开(公告)号：US20100272193A1

公开(公告)日：2010-10-28

申请号：US12561015

申请日：2009-09-16

申请人： Farooq Khan ,  Jiann-An Tsai ,  Sridhar Rajagopal ,  Bill Semper ,  Zhouyue Pi ,  Ying Li

发明人： Farooq Khan ,  Jiann-An Tsai ,  Sridhar Rajagopal ,  Bill Semper ,  Zhouyue Pi ,  Ying Li

IPC分类号： H04L27/00

CPC分类号： H04L1/0075 ,  H04L1/0041 ,  H04L1/1812

摘要： A Two-Dimensional (2D) code receiver and transmitter, and methods for their operation in a 2D code communication system, are provided. The method for operating the 2D code receiver includes receiving a sequence of 2D codes from a 2D code transmitter having data encoded therein, wherein the 2D codes of the sequence are received in succession, and decoding the received a sequence of 2D codes into the data.

摘要翻译： 提供二维（2D）码接收机和发射机及其在二维码通信系统中的操作方法。 用于操作2D代码接收器的方法包括从具有其中编码的数据的2D代码发送器接收2D代码序列，其中序列的2D代码被连续地接收，并且将接收的2D代码序列解码为数据。

公开(公告)号：US20110091220A1

公开(公告)日：2011-04-21

申请号：US12895225

申请日：2010-09-30

申请人： Sridhar Rajagopal ,  Farooq Khan ,  Ying Li ,  Jaeseung Son

发明人： Sridhar Rajagopal ,  Farooq Khan ,  Ying Li ,  Jaeseung Son

IPC分类号： H04B10/00

CPC分类号： H04B10/116 ,  H04B10/1149

摘要： A method, apparatus, and a non-transitory computer readable storage medium for supporting visible light communication (VLC) exchanges bitmaps for capabilities field exchange in a media access control (MAC) layer during link establishment and association with other VLC-enabled devices. An aggregation bitmap is generated to indicate whether a visible light communication (VLC) transmitter of a first device uses at least one aggregated band that comprises multiple active frequency bands. The aggregation bitmap is transmitted in a capabilities information exchange (CIE) signal to a second device. A guard bitmap that identifies a set of guard frequency bands is also generated and transmitted in the CIE signal. Each guard frequency band indicates leakage transmission from the VLC transmitter.

摘要翻译： 用于支持可见光通信（VLC）的方法，装置和非暂时计算机可读存储介质在与其他支持VLC的设备建立链接期间在媒体访问控制（MAC）层中交换位图以进行能力场交换。 生成聚合位图以指示第一设备的可见光通信（VLC）发射机是否使用包括多个活动频带的至少一个聚合频带。 聚合位图在能力信息交换（CIE）信号中被发送到第二设备。 识别一组保护频带的保护位图也被生成并在CIE信号中发送。 每个保护频带表示来自VLC发射机的泄漏传输。

公开(公告)号：US09270420B2

公开(公告)日：2016-02-23

申请号：US12561015

申请日：2009-09-16

申请人： Farooq Khan ,  Jiann-An Tsai ,  Sridhar Rajagopal ,  Bill Semper ,  Zhouyue Pi ,  Ying Li

发明人： Farooq Khan ,  Jiann-An Tsai ,  Sridhar Rajagopal ,  Bill Semper ,  Zhouyue Pi ,  Ying Li

IPC分类号： H04L7/00 ,  H03K9/00 ,  H04L1/00 ,  H04L1/18

CPC分类号： H04L1/0075 ,  H04L1/0041 ,  H04L1/1812

摘要： A Two-Dimensional (2D) code receiver and transmitter, and methods for their operation in a 2D code communication system, are provided. The method for operating the 2D code receiver includes receiving a sequence of 2D codes from a 2D code transmitter having data encoded therein, wherein the 2D codes of the sequence are received in succession, and decoding the received a sequence of 2D codes into the data.

摘要翻译： 提供二维（2D）码接收机和发射机及其在二维码通信系统中的操作方法。 用于操作2D代码接收器的方法包括从具有其中编码的数据的2D代码发送器接收2D代码序列，其中序列的2D代码被连续地接收，并且将接收的2D代码序列解码为数据。

公开(公告)号：US08950933B2

公开(公告)日：2015-02-10

申请号：US12895225

申请日：2010-09-30

申请人： Sridhar Rajagopal ,  Farooq Khan ,  Ying Li ,  Jaeseung Son

发明人： Sridhar Rajagopal ,  Farooq Khan ,  Ying Li ,  Jaeseung Son

IPC分类号： H04B10/00 ,  H04B10/116 ,  H04B10/114

CPC分类号： H04B10/116 ,  H04B10/1149

摘要： A method, apparatus, and a non-transitory computer readable storage medium for supporting visible light communication (VLC) exchanges bitmaps for capabilities field exchange in a media access control (MAC) layer during link establishment and association with other VLC-enabled devices. An aggregation bitmap is generated to indicate whether a visible light communication (VLC) transmitter of a first device uses at least one aggregated band that comprises multiple active frequency bands. The aggregation bitmap is transmitted in a capabilities information exchange (CIE) signal to a second device. A guard bitmap that identifies a set of guard frequency bands is also generated and transmitted in the CIE signal. Each guard frequency band indicates leakage transmission from the VLC transmitter.

摘要翻译： 用于支持可见光通信（VLC）的方法，装置和非暂时计算机可读存储介质在与其他支持VLC的设备建立链接期间在媒体访问控制（MAC）层中交换位图以进行能力场交换。 生成聚合位图以指示第一设备的可见光通信（VLC）发射机是否使用包括多个活动频带的至少一个聚合频带。 聚合位图在能力信息交换（CIE）信号中被发送到第二设备。 识别一组保护频带的保护位图也被生成并在CIE信号中发送。 每个保护频带表示来自VLC发射机的泄漏传输。

公开(公告)号：US20110164881A1

公开(公告)日：2011-07-07

申请号：US12975225

申请日：2010-12-21

申请人： Sridhar Rajagopal ,  Eran Pisek ,  Farooq Khan ,  Ying Li

发明人： Sridhar Rajagopal ,  Eran Pisek ,  Farooq Khan ,  Ying Li

IPC分类号： H04B10/00

CPC分类号： H04B10/116 ,  H04B10/1149

摘要： A method and apparatus conduct an optical clock rate negotiation to support asymmetric clock rates for visible light communication (VLC) in a VLC device. A first frame that includes a receiver clock rate supported by a first VLC device is transmitted at a predetermined clock rate. A response frame that includes a receiver clock rate supported by a second VLC device is received from the second VLC device. A transmission clock rate of the first VLC device is selected based on the response frame from the second VLC device. Subsequent frames for data communication are transmitted to the second VLC device at the selected transmission clock rate of the first device. Alternatively, when conducting optical clock negotiation in the PHY layer, multiple clock rates are supported within a single frame.

摘要翻译： 一种方法和装置进行光时钟速率协商以支持VLC设备中可见光通信（VLC）的非对称时钟速率。 以预定的时钟速率发送包括由第一VLC设备支持的接收机时钟速率的第一帧。 从第二VLC设备接收包括由第二VLC设备支持的接收机时钟速率的响应帧。 基于来自第二VLC设备的响应帧来选择第一VLC设备的传输时钟速率。 用于数据通信的后续帧以所选择的第一设备的传输时钟速率发送到第二VLC设备。 或者，当在PHY层中进行光时钟协商时，在单个帧内支持多个时钟速率。

公开(公告)号：US08855496B2

公开(公告)日：2014-10-07

申请号：US12975225

申请日：2010-12-21

申请人： Sridhar Rajagopal ,  Eran Pisek ,  Farooq Khan ,  Ying Li

发明人： Sridhar Rajagopal ,  Eran Pisek ,  Farooq Khan ,  Ying Li

IPC分类号： H04B10/00 ,  H04B10/114 ,  H04B10/116

CPC分类号： H04B10/116 ,  H04B10/1149

摘要： A method and apparatus conduct an optical clock rate negotiation to support asymmetric clock rates for visible light communication (VLC) in a VLC device. A first frame that includes a receiver clock rate supported by a first VLC device is transmitted at a predetermined clock rate. A response frame that includes a receiver clock rate supported by a second VLC device is received from the second VLC device. A transmission clock rate of the first VLC device is selected based on the response frame from the second VLC device. Subsequent frames for data communication are transmitted to the second VLC device at the selected transmission clock rate of the first device. Alternatively, when conducting optical clock negotiation in the PHY layer, multiple clock rates are supported within a single frame.

摘要翻译： 一种方法和装置进行光时钟速率协商以支持VLC设备中可见光通信（VLC）的非对称时钟速率。 以预定的时钟速率发送包括由第一VLC设备支持的接收机时钟速率的第一帧。 从第二VLC设备接收包括由第二VLC设备支持的接收机时钟速率的响应帧。 基于来自第二VLC设备的响应帧来选择第一VLC设备的传输时钟速率。 用于数据通信的后续帧以所选择的第一设备的传输时钟速率发送到第二VLC设备。 或者，当在PHY层中进行光时钟协商时，在单个帧内支持多个时钟速率。

公开(公告)号：US08620154B2

公开(公告)日：2013-12-31

申请号：US12838240

申请日：2010-07-16

申请人： Ying Li ,  Sridhar Rajagopal

发明人： Ying Li ,  Sridhar Rajagopal

IPC分类号： H04B10/00 ,  H04B10/08

CPC分类号： H04W76/19 ,  H04W84/10 ,  Y02D70/00

摘要： A visible light communication (VLC) device is provided for use in a VLC system. The VLC device detect a trigger condition indicating a failure of a VLC link associated with first allocated resources used to communicate with a second VLC device. In response to the detection, the VLC device terminates on the first allocated resources transmission of data to the second VLC device and transmits a fast link recovery (FLR) signal using the first allocated resources. The VLC device receives a fast link recovery response (FLR RSP) signal indicating the second VLC device received the FLR signal and, in response, the VLC device resumes transmission of data to the second VLC device.

摘要翻译： 提供可见光通信（VLC）设备用于VLC系统。 VLC设备检测指示与用于与第二VLC设备通信的第一分配资源相关联的VLC链路的故障的触发条件。 响应于检测，VLC设备在第一分配的资源数据到第二VLC设备上终止并且使用第一分配的资源发送快速链路恢复（FLR）信号。 VLC设备接收指示第二VLC设备接收到FLR信号的快速链路恢复响应（FLR RSP）信号，并且作为响应，VLC设备恢复向第二VLC设备的数据传输。

公开(公告)号：US08374201B2

公开(公告)日：2013-02-12

申请号：US12871770

申请日：2010-08-30

申请人： Sridhar Rajagopal ,  Eun Tae Won ,  Ying Li

发明人： Sridhar Rajagopal ,  Eun Tae Won ,  Ying Li

IPC分类号： H04J3/00

CPC分类号： H04B10/116 ,  H04B10/1125 ,  H04B10/1149 ,  H04L7/041 ,  H04L7/046

摘要： For use in visible light communication (VLC), methods for synchronization with multiple topology support and for transmitting an extended preamble. The method for synchronization includes transmitting a two-part preamble sequence. The preamble sequence includes one or more repetitions of a fast locking pattern (FLP) configured to be used for clock synchronization, and one or more repetitions of a topology dependent pattern (TDP) configured to be used to distinguish a plurality of VLC topologies. The method for transmitting an extended preamble includes generating an extended preamble and transmitting the extended preamble during a receive or idle mode for maintaining visibility support and for better synchronization performance.

摘要翻译： 用于可见光通信（VLC），用于与多个拓扑支持同步并用于发送扩展前同步码的方法。 同步的方法包括发送两部分的前导码序列。 前导序列包括被配置为用于时钟同步的快速锁定模式（FLP）的一个或多个重复，以及被配置为用于区分多个VLC拓扑的拓扑依赖模式（TDP）的一个或多个重复。 用于发送扩展前同步码的方法包括在接收或空闲模式期间生成扩展前导码并发送扩展前同步码，以便维持可视性支持和更好的同步性能。