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1. 发明授权

US06754194B2 Method and apparatus for indicating the presence of a wireless local area network by detecting signature sequences 有权
标题翻译：通过检测签名序列来指示无线局域网的存在的方法和装置
公开(公告)号：US06754194B2
公开(公告)日：2004-06-22
申请号：US10243228
申请日：2002-09-13
申请人： Kumar Ramaswamy , Louis Robert Litwin, Jr. , Paul Gothard Knutson , Wen Gao , Charles Chuanming Wang
发明人： Kumar Ramaswamy , Louis Robert Litwin, Jr. , Paul Gothard Knutson , Wen Gao , Charles Chuanming Wang
IPC分类号： H04Q700
CPC分类号： H04W48/18 , H04W36/0088 , H04W36/14 , H04W52/0229 , H04W52/0245 , H04W52/0254 , Y02D70/142 , Y02D70/164
摘要： A method and apparatus for detecting the presence of a wireless local area network (WLAN) (104) detects at least one signature sequence in a radio frequency (RF) signal associated with a WLAN (104). The present invention indicates the presence of a WLAN (104) in response to the detection of the at least one signature sequence in the RF signal.
摘要翻译：用于检测无线局域网（WLAN）（104）的存在的方法和装置检测与WLAN（104）相关联的射频（RF）信号中的至少一个签名序列。本发明指示响应于RF信号中的至少一个签名序列的检测而存在WLAN（104）。

2. 发明授权

US07675901B2 Method and an apparatus for mapping an MPEG transport stream into IP packets for WLAN broadcast 失效
标题翻译：用于将MPEG传输流映射到用于WLAN广播的IP分组中的方法和装置
公开(公告)号：US07675901B2
公开(公告)日：2010-03-09
申请号：US10541930
申请日：2004-01-09
申请人： Charles Chuanming Wang , Kumar Ramaswamy , Guillaume Bichot , Junbiao Zhang
发明人： Charles Chuanming Wang , Kumar Ramaswamy , Guillaume Bichot , Junbiao Zhang
IPC分类号： H04L12/66
CPC分类号： H04N21/64707 , H04L12/1836 , H04L12/189 , H04L29/06027 , H04L65/1026 , H04L65/1036 , H04L65/604 , H04L65/607 , H04L65/608 , H04W4/06 , H04W4/18 , H04W8/26 , H04W28/06 , H04W28/065 , H04W52/0229 , H04W72/1273 , H04W84/12 , Y02D70/142
摘要： A method for mapping from an MPEG-2 transport stream to an IP-based RTP/UDP/IP stack for broadcasting service in a WLAN. All the mapping functions may be performed in a receiver transcoder (FIG. 2). Mobile devices such as laptop computers, cell phones and PDAs have limited battery power, CPU processing and memory resources. To reduce CPU processing power and consumption battery power in these devices certain data processing functions are achieved in the communicating systems, such as the de-multiplexer function that typically prepares an MPEG-2 for retransmission at the local level. When a transcoder, capable of de-multiplexing and MPEG-2 transport stream receives a program it de-multiplexes the stream based on PIDs assigned to each transport packet. This de-multiplexing function extracts several components from a transport stream: video and audio PES/ES associated with programs and PSI (PAT and PMTs).
摘要翻译：一种从MPEG-2传输流映射到用于WLAN中的广播服务的基于IP的RTP / UDP / IP堆栈的方法。所有映射功能可以在接收机代码转换器（图2）中执行。诸如膝上型计算机，蜂窝电话和PDA的移动设备具有有限的电池电量，CPU处理和存储器资源。为了降低这些设备中的CPU处理能力和消耗电池功率，在通信系统中实现了某些数据处理功能，例如通常在本地级准备用于重传的MPEG-2的去多路复用器功能。当能够解复用和MPEG-2传输流的代码转换器接收到一个程序时，它根据分配给每个传输数据包的PID对数据流进行解复用。该解复用功能从传输流中提取多个组件：与程序和PSI（PAT和PMT）相关联的视频和音频PES / ES。

3. 发明授权

US08533765B2 On demand system and method using dynamic broadcast scheduling 失效
公开(公告)号：US08533765B2
公开(公告)日：2013-09-10
申请号：US11991036
申请日：2005-08-26
申请人： Jun Li , Charles Chuanming Wang , Kumar Ramaswamy
发明人： Jun Li , Charles Chuanming Wang , Kumar Ramaswamy
IPC分类号： H04N7/173
CPC分类号： H04N21/47208 , H04N7/17318 , H04N21/26216 , H04N21/26275 , H04N21/26616 , H04N21/4147 , H04N21/47202 , H04N21/6405 , H04N21/8456
摘要： A system and method for broadcasting content includes a content provider which interfaces with one or more clients through a network. The content provider includes a scheduler responsive to requests for content from clients. The scheduler provides the content in blocks by making the blocks available to requesters by a plurality of streams wherein a subsequent requester accesses blocks from previous requester's streams complemented by a subset of blocks as a stream for this requester to complete an entire set of blocks for the subsequent requester. By manipulating the scheduler as a function of user requests, this system and method is able to provide a video on demand service at a fractional bandwidth usage of a conventional VOD system.

4. 发明授权

US08289936B2 Seamless public wireless local area network user authentication 有权
标题翻译：无缝公共无线局域网用户认证
公开(公告)号：US08289936B2
公开(公告)日：2012-10-16
申请号：US10514311
申请日：2003-05-13
申请人： Charles Chuanming Wang , Sachin Satish Mody , Junbiao Zhang , Kumar Ramaswamy
发明人： Charles Chuanming Wang , Sachin Satish Mody , Junbiao Zhang , Kumar Ramaswamy
IPC分类号： H04W4/00 , H04L12/66 , H04L12/00 , H04L9/32 , G06F15/17
CPC分类号： H04L63/061 , H04L12/2856 , H04L63/08 , H04L63/104 , H04L63/162 , H04W12/06 , H04W12/08 , H04W48/14 , H04W80/00 , H04W84/12
摘要： A public wireless LAN permits receipt of non-authentication traffic, such as access information requests, from a mobile wireless communications device prior to device authentication by partially opening a controlled port within an access point. The wireless LAN re-directs such non-authentication traffic received at the AP from the mobile wireless communications to a local web server. The local web server provides reply to the mobile wireless communications device, enabling a determination by the device whether or not to request access. The device seeks access by way of an access request received at the AP. In response, the AP re-directs the access request through an uncontrolled port in the AP to an access server that authenticates device. Upon successful device authentication, the AP fully opens its controlled port to permit the exchange of traffic through that port with the mobile wireless communications device.
摘要翻译：在设备认证之前，公共无线LAN允许从移动无线通信设备接收诸如接入信息请求的非认证业务，部分地打开接入点内的受控端口。无线LAN将从AP接收到的这种非认证流量从移动无线通信重新引导到本地Web服务器。本地web服务器提供对移动无线通信设备的回复，使得设备能够确定是否请求访问。该设备通过在AP接收到的接入请求来寻求接入。作为响应，AP通过AP中的非受控端口将访问请求重定向到认证设备的访问服务器。在成功的设备认证后，AP完全打开其受控端口，以允许通过该端口与移动无线通信设备交换流量。

5. 发明授权

US07761048B2 Technique for video broadcasting in wireless LAN 有权
标题翻译：无线局域网视频广播技术
公开(公告)号：US07761048B2
公开(公告)日：2010-07-20
申请号：US10564253
申请日：2003-07-14
申请人： Guillaume Bichot , Kumar Ramaswamy , Junbiao Zhang , Charles Chuanming Wang
发明人： Guillaume Bichot , Kumar Ramaswamy , Junbiao Zhang , Charles Chuanming Wang
IPC分类号： H04H20/71 , H04H40/00 , H04M3/42
CPC分类号： H04W72/005 , H04L12/1859 , H04N7/163 , H04N21/2381 , H04N21/26616 , H04N21/2665 , H04N21/4126 , H04N21/43615 , H04N21/4363 , H04N21/43637 , H04N21/4381 , H04N21/4402 , H04N21/4622 , H04W84/12
摘要： A wireless Local Area Network provides data service through a data LAN and also provides video broadcast service through a video LAN. A wireless LAN subscriber accesses the video LAN through one of a plurality of Video Access Points (VAPs) that broadcast multiple video programs on a channel having a frequency different than the frequency over which the subscriber accesses the data LAN. Each VAP maintains the video channel in a one-way broadcast-only mode to prevent a wireless LAN subscriber from seeking to uplink information on that channel. In this way, the wireless LAN can employ a common protocol for both data and video transmission, and deliver the video streams at the maximum permissible downlink transmission rate.
摘要翻译：无线局域网通过数据LAN提供数据服务，并通过视频LAN提供视频广播服务。无线LAN用户通过在具有与用户访问数据LAN的频率不同的频率的信道上广播多个视频节目的多个视频接入点（VAP）中的一个接入视频LAN。每个VAP以单向广播模式维护视频频道，以防止无线LAN用户寻求该频道上的上行链路信息。以这种方式，无线LAN可以采用用于数据和视频传输的公共协议，并且以最大允许的下行链路传输速率传送视频流。

6. 发明授权

US06954793B2 Pre-paid data card authentication in a public wireless LAN access system 失效
标题翻译：公共无线局域网接入系统中的预付费数据卡认证
公开(公告)号：US06954793B2
公开(公告)日：2005-10-11
申请号：US10183081
申请日：2002-06-27
申请人： Kumar Ramaswamy , Charles Chuanming Wang , Junbaio Zhang , Sachin Satish Mody
发明人： Kumar Ramaswamy , Charles Chuanming Wang , Junbaio Zhang , Sachin Satish Mody
IPC分类号： H04L12/14 , G06Q20/02 , G06Q20/08 , G06Q20/38 , G06Q20/40 , G06Q30/04 , H04L9/32 , H04L12/28 , H04L29/06 , H04M17/00 , H04W12/06 , G06F15/173
CPC分类号： H04L63/0428 , G06Q20/027 , G06Q20/085 , G06Q20/0855 , G06Q20/382 , G06Q20/4012 , G06Q30/04 , H04L12/14 , H04L12/1403 , H04L12/1457 , H04L12/1467 , H04L12/2856 , H04L63/0823 , H04L63/083 , H04M17/00 , H04M17/10 , H04M2215/2033 , H04M2215/22 , H04M2215/32 , H04W4/24 , H04W12/06 , H04W74/00 , H04W84/12
摘要： A user (121, 122) can gain access to a Local Area Network (LAN) (20) on a fee basis without the risk of having to transmit an un-encrypted PIN at upon initial access. The user initially sends a request to the LAN identifying a Billing Agent (26) that maintains an account associated with the user for payment of LAN access charges. In practice, the account can take the form of a pre-paid account identified only by a PIN known to the user. After the user has identified the Billing Agent, the LAN queries the Billing Agent for its digital certificate, which the LAN forwards to the user. The user utilizes the certificate to encrypt a PIN for transmission via the LAN to the Billing Agent for authentication. Upon successful authentication, the Billing Agent authorizes the LAN to grant access to the user, thus allowing the user to obtain a connection via the LAN to a private network (14) or a public network (16).
摘要翻译：用户（12 1，12 2）可以以费用方式获得对局域网（LAN）（20）的访问，而不必发送un 加密PIN在初次访问时。用户最初向LAN识别出一个账单代理（26）的请求，该计费代理（26）维护与该用户相关联的帐户以支付LAN访问费用。实际上，该帐户可以采用仅由用户熟知的PIN识别的预付费帐户的形式。在用户识别出计费代理之后，LAN会向计费代理查询其数字证书，LAN将转发给用户。用户利用证书加密PIN，以便经由LAN传送到计费代理进行认证。在成功认证后，计费代理授权LAN授予对用户的访问，从而允许用户通过LAN获得到专用网络（14）或公共网络（16）的连接。

7. 发明授权

US08654880B2 Data transmission using low density parity check coding and constellation mapping 有权
标题翻译：数据传输采用低密度奇偶校验编码和星座映射
公开(公告)号：US08654880B2
公开(公告)日：2014-02-18
申请号：US13388810
申请日：2010-07-20
申请人： Wei Zhou , Li Zou , Yuping Zhao , Xiaoxin Zhang , Peng Liu , Charles Chuanming Wang
发明人： Wei Zhou , Li Zou , Yuping Zhao , Xiaoxin Zhang , Peng Liu , Charles Chuanming Wang
IPC分类号： H04B7/02
CPC分类号： H04L27/3488 , H03M13/1171 , H03M13/15 , H03M13/1515 , H03M13/255 , H03M13/2732 , H03M13/2906 , H03M13/356 , H04L1/0041 , H04L1/0058 , H04L1/0071 , H04L27/2626 , H04L27/3405 , H04L27/36
摘要： Modern coding and modulation techniques have greatly improved the transmission of signals. A method is described including receiving a stream of data bits, demultiplexing the stream into a first and second substream, encoding the first and second substream using a low density parity check coding process, and mapping the first substream to a first region of a symbol constellation map and the second substream to a second region. Also, an apparatus is described including a demultiplexer that produces a first and second bitstream, a first encoder that encodes the first substream using a low density parity check coding process at a first encoding rate, a second encoder that encodes the second substream at a second rate, and a symbol mapper that maps bits from the first substream to a first region of a symbol constellation map and maps bits from the second substream to a second region.
摘要翻译：现代编码和调制技术大大提高了信号的传输。描述了一种方法，包括接收数据比特流，将流解复用为第一和第二子流，使用低密度奇偶校验编码过程对第一和第二子流进行编码，以及将第一子流映射到符号星座的第一区域将第二子流映射到第二区域。此外，描述了一种包括产生第一和第二比特流的解复用器的装置，使用第一编码率的低密度奇偶校验编码处理对第一子流进行编码的第一编码器，第二编码器，其在第二编码器中编码第二子流速率，以及符号映射器，其将来自第一子流的比特映射到符号星座图的第一区域，并将来自第二子流的比特映射到第二区域。

8. 发明授权

US08542745B2 Method for video decoding supported by graphics processing unit 有权
标题翻译：由图形处理单元支持的视频解码方法
公开(公告)号：US08542745B2
公开(公告)日：2013-09-24
申请号：US12590978
申请日：2009-11-17
申请人： Hui Zhang , Li Hua Zhu , Charles Chuanming Wang
发明人： Hui Zhang , Li Hua Zhu , Charles Chuanming Wang
IPC分类号： H04N11/02
CPC分类号： H04N19/423 , H04N19/436 , H04N19/44
摘要： A method for utilizing a CUDA based GPU to accelerate a complex, sequential task such as video decoding, comprises decoding on a CPU headers and macroblocks of encoded video, performing inverse quantization (on CPU or GPU), transferring the picture data to GPU, where it is stored in a global buffer, and then on the GPU performing inverse waveform transforming of the inverse quantized data, performing motion compensation, buffering the reconstructed picture data in a GPU global buffer, determining if the decoded picture data are used as reference for decoding a further picture, and if so, copying the decoded picture data from the GPU global buffer to a GPU texture buffer. Advantages are that the data communication between CPU and GPU is minimized, the workload of CPU and GPU is balanced and the modules off-loaded to GPU can be efficiently realized since they are data-parallel and compute-intensive.
摘要翻译：一种利用基于CUDA的GPU来加速诸如视频解码的复杂顺序任务的方法包括对编码视频的CPU头部和宏块进行解码，执行逆量化（在CPU或GPU上），将图像数据传送到GPU，其中存储在全局缓冲器中，然后在GPU上执行逆量化数据的逆波形变换，执行运动补偿，在GPU全局缓冲器中缓冲重建的图像数据，确定解码的图像数据是否用作解码的参考如果是，将解码的图像数据从GPU全局缓冲器复制到GPU纹理缓冲器。优点是CPU和GPU之间的数据通信最小化，CPU和GPU的工作负载平衡，并且卸载到GPU的模块可以有效地实现，因为它们是数据并行和计算密集型的。

9. 发明申请

US20100265864A1 Method and apparatus for power management in communication system 审中-公开
标题翻译：通信系统电源管理方法与装置
公开(公告)号：US20100265864A1
公开(公告)日：2010-10-21
申请号：US12802432
申请日：2010-06-07
申请人： Yong He , Xiao Jin Ma , Huan Qiang Zhang , Jun Ll , Charles Chuanming Wang
发明人： Yong He , Xiao Jin Ma , Huan Qiang Zhang , Jun Ll , Charles Chuanming Wang
IPC分类号： H04W52/02
CPC分类号： H04W68/025 , H04L12/189 , H04W4/06
摘要： A method and apparatus for power management in the communication system, wherein the method for transmitting data from an access point to communication units comprising: assigning, by the access point, a first and a second association identifier in a message, to each of the communication units, to indicate the presence of respective buffered multicast data and unicast data respectively; setting, by the access point, the first association identifier to indicate the corresponding communication unit to receive the buffered multicast data, the second association identifier to indicate the corresponding communication unit to receive the buffered unicast data; and transmitting, by the access point, the message to awake the communication unit corresponding to the set first and/or second association identifier so as to transmit the buffered data thereto.
摘要翻译：一种用于在通信系统中进行功率管理的方法和装置，其中用于从接入点向通信单元发送数据的方法包括：由接入点将消息中的第一和第二关联标识符分配给每个通信单元，分别指示各个缓冲的组播数据和单播数据的存在; 由所述接入点设置所述第一关联标识符以指示相应的通信单元以接收缓冲的多播数据，所述第二关联标识符用于指示相应的通信单元以接收所缓存的单播数据; 以及由所述接入点发送所述消息以唤醒与所设置的第一和/或第二关联标识符对应的所述通信单元，以将所缓存的数据发送到所述第一和/或第二关联标识符。

10. 发明授权

US08423855B2 Adaptive and scalable packer error correction apparatus and method 有权
标题翻译：自适应和可扩展的封隔器纠错装置和方法
公开(公告)号：US08423855B2
公开(公告)日：2013-04-16
申请号：US12449913
申请日：2007-03-06
申请人： Xiao Jun Ma , Huan Qiang Zhang , Ren Lei Chen , Guang Hua Zhou , Jun Li , Charles Chuanming Wang
发明人： Xiao Jun Ma , Huan Qiang Zhang , Ren Lei Chen , Guang Hua Zhou , Jun Li , Charles Chuanming Wang
IPC分类号： G06F11/00
CPC分类号： H04L1/1819 , H04L1/1671 , H04L1/1848 , H04L1/1854 , H04L2001/0093
摘要： An adaptive and scalable packet error correction apparatus and method in a wireless multicast network is provided. Each retransmission request from a receiver contains a round number and the number of repairs sent in that round. At each receiver, there are two counters for counting the rounds sent out on the network and the number of repairs that have been required. A receiver on the wireless multicast network listens to the ARQ requests sent by other receivers to update the two counters and determines whether its request should be suppressed or be sent out.
摘要翻译：提供了一种无线组播网络中的自适应和可扩展的分组纠错装置和方法。来自接收机的每个重发请求包含轮次和在该轮中发送的维修次数。在每个接收机上，有两个计数器用于计算网络上发送的轮次和所需的维修次数。无线组播网络上的接收者收听由其他接收者发送的ARQ请求，以更新两个计数器，并确定其请求是否被抑制或被发送出去。

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