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1. 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.

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

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。

4. 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。

5. 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。

6. 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）。

7. 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。

8. 发明申请

US20100189021A1 METHOD AND APPARATUS FOR POWER MANAGEMENT IN WLAN 有权
标题翻译： WLAN中的电源管理方法与装置
公开(公告)号：US20100189021A1
公开(公告)日：2010-07-29
申请号：US12449782
申请日：2007-02-27
申请人： Yong He , Xiaojun Ma , Huanqiang Zhang , Jun Li , Charles Chuanming Wang
发明人： Yong He , Xiaojun Ma , Huanqiang Zhang , Jun Li , Charles Chuanming Wang
IPC分类号： H04J3/00 , G08C17/02
CPC分类号： H04W52/0216 , H04W52/00 , H04W52/0212 , H04W52/0219 , H04W72/1221 , Y02D70/142
摘要： A method and apparatus for improving power performance of a wireless adapter which adopts a time slicing scheme by dividing a beacon interval into multiple slices, and assigning these slices to the stations through the beacon frame. The stations wakeup at the appointed slices to receive their buffered frames from an access point, and may enter into sleep state once the transactions conclude. A further embodiment including formatting data into a control frame for use in a wireless local area network, the frame including an indication, for each station associated with the wireless local area network, whether frames are buffered awaiting transmission to each respective station, a number of time intervals between control frames, and at which time interval the transmission of the buffered frames will begin for each station having buffered frames awaiting transmission.
摘要翻译：一种用于改善无线适配器的功率性能的方法和装置，其通过将信标间隔分成多个片段并采用时间分片方案，并且通过信标帧将这些片段分配给各个台站。站点在指定的切片处唤醒，以从接入点接收缓冲的帧，并且一旦交易结束就可能进入睡眠状态。一种进一步的实施例，包括将数据格式化成用于无线局域网的控制帧，所述帧包括与无线局域网相关联的每个站的指示是否缓冲等待发送到每个相应站的帧，多个控制帧之间的时间间隔，并且在该时间间隔处，对于具有等待传输的缓冲帧的每个站，开始缓冲帧的传输。

9. 发明授权

US07046998B2 Multimedia content delivery through WLAN coverage area 有权
标题翻译：通过WLAN覆盖区域进行多媒体内容传送
公开(公告)号：US07046998B2
公开(公告)日：2006-05-16
申请号：US10518581
申请日：2003-06-20
申请人： Shaily Verma , Charles Chuanming Wang , Jun Li
发明人： Shaily Verma , Charles Chuanming Wang , Jun Li
IPC分类号： H04Q7/20
CPC分类号： H04W48/16 , H04L63/04 , H04L63/08 , H04L63/18 , H04L65/4084 , H04L67/04 , H04L67/327 , H04L67/34 , H04L69/329 , H04W4/02 , H04W12/06 , H04W48/18 , H04W48/20 , H04W80/04 , H04W84/042 , H04W84/12 , H04W88/06 , H04W92/02
摘要： A system for transferring content includes a wireless local area network (WLAN) and a network module provided within the WLAN or a cellular network to alert users of available content in the WLAN and handle user requests made for content when a user has access to the cellular network. The network module, which may comprise an interworking function, delivers the content to the user through the WLAN when the user is present in a coverage area of the WLAN. The invention allows a user to view the programs available for download and request a specific program using a relatively low speed network, such as a cellular network, and download the program through a high speed network, such as a WLAN.
摘要翻译：用于传送内容的系统包括无线局域网（WLAN）和设置在WLAN或蜂窝网络内的网络模块，以向用户提醒WLAN中的可用内容，并且当用户有权访问蜂窝网络时处理用于内容的用户请求网络。当用户存在于WLAN的覆盖区域中时，可以包括互通功能的网络模块通过WLAN将内容传递给用户。本发明允许用户查看可用于下载的程序，并使用诸如蜂窝网络的相对低速的网络请求特定的程序，并且通过诸如WLAN的高速网络来下载该程序。

10. 发明申请

US20100095181A1 ADAPTIVE AND SCALABLE PACKER ERROR CORRECTION APPARATUS AND METHOD 有权
标题翻译：自适应和可扩展的包装器错误校正装置和方法
公开(公告)号：US20100095181A1
公开(公告)日：2010-04-15
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： H04L1/18 , G06F11/14
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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