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。

公开(公告)号：US20120243523A1

公开(公告)日：2012-09-27

申请号：US13498890

申请日：2010-09-15

申请人： Wei Liu ,  Cheng Sui ,  Junbiao Zhang ,  Jin Fei Yu

发明人： Wei Liu ,  Cheng Sui ,  Junbiao Zhang ,  Jin Fei Yu

IPC分类号： H04W84/12

CPC分类号： H04L1/0002 ,  H04L1/0016 ,  H04L1/002

摘要： A method of communication between a transmitter and a receiver over a channel is provided. The transmitter is capable of transmitting packets with multiple data rates, each of which adapts to a respective channel condition with regards to the performance of the communication. The method comprises the steps of at the level of the transmitter: upon detection of a disappearance of deterioration of the channel condition, transmitting packets with a data rate selected from a group of stable data rates that are stably used before the disappearance of the deterioration but larger than the last data rate before disappearance of the deterioration.

摘要翻译： 提供了一种通过信道在发射机和接收机之间进行通信的方法。 发射机能够发送具有多个数据速率的分组，每个数据速率适应于相对于通信性能的相应信道状况。 该方法包括以下步骤：在发射机的电平上：在检测到信道状况恶化消失后，以数据速率发送数据速率，该数据速率选自在恶化消失之前稳定使用的一组稳定数据速率， 大于恶化消失前的最后数据速率。

公开(公告)号：US08085740B2

公开(公告)日：2011-12-27

申请号：US10553648

申请日：2004-03-08

申请人： Junbiao Zhang ,  Kumar Ramaswamy

发明人： Junbiao Zhang ,  Kumar Ramaswamy

IPC分类号： H04W4/00

CPC分类号： H04W12/08 ,  H04L12/2856 ,  H04L63/08 ,  H04L63/0884 ,  H04L63/104 ,  H04W12/06 ,  H04W40/02 ,  H04W74/00 ,  H04W84/12 ,  H04W88/08 ,  H04W88/16

摘要： A wireless Local Area Network (LAN 11) capable of providing “enterprise guest” hosting includes at least one an e-open wireless LAN access point (15) that provides access to both guests and local users. Upon receipt of a request for access, the access point forwards the request to an authentication proxy. The authentication proxy then authenticates the party requesting access in accordance with that party's status (that is, whether the party is a local user or guest). Upon successful authentication, the network routes the traffic from a local user differently as compared to that for a guest. For example traffic from guests goes to gateway for receipt in an external network such as the Internet, whereas traffic from the local user goes to a local network, e.g., a corporate intranet. In this way, the Wireless LAN 11, after ascertaining the status of the party requesting access, can limit guest traffic according to the guest access policy.

摘要翻译： 能够提供“企业访客”托管的无线局域网（LAN 11）包括提供对客人和本地用户的访问的至少一个电子开放无线LAN接入点（15）。 在接收到访问请求时，接入点将请求转发给认证代理。 然后，认证代理根据该方的状态（即，该方是否是本地用户或来宾）认证请求访问的一方。 在成功认证后，网络与来自本地用户的流量相比，路由不同。 例如，来自客户的流量进入网关以在外部网络（例如因特网）中接收，而来自本地用户的流量到达本地网络，例如公司内部网。 以这种方式，无线LAN 11在确定请求访问的一方的状态之后，可以根据访客访问策略来限制访客流量。

公开(公告)号：US07864744B2

公开(公告)日：2011-01-04

申请号：US11642203

申请日：2006-12-20

申请人： Jian Ping Song ,  Junbiao Zhang ,  Ming Li

发明人： Jian Ping Song ,  Junbiao Zhang ,  Ming Li

IPC分类号： H04W4/00

CPC分类号： H04W72/02 ,  H04W72/085 ,  H04W72/10 ,  H04W84/12 ,  H04W84/20

摘要： Disclosed is a method of dynamical frequency selecting for a basic service set established by a main wireless device in a wireless local area network. The method comprises steps of a determining step for determining whether a new channel to be used by said BSS is needed; a scanning step conducted by said main wireless device for scanning all channels based on a random priority to detect whether other adjacent BSSs are existing and performing DFS concurrently; a measuring step conducted by said main wireless device based on the scanning result for existing operational BSSs for measuring channel quality of a plurality of channels; selecting one channel based on the channel quality parameters. The present invention advantageously provides a dynamic frequency selection method without any modification for the IEEE 802.11 standard, or any requirement for the implementation of the wireless stations.

摘要翻译： 公开了一种在无线局域网中由主无线设备建立的基本业务集的动态频率选择方法。 该方法包括以下步骤：确定是否需要由所述BSS使用的新信道; 由所述主无线设备执行的用于基于随机优先级扫描所有信道以检测是否存在其他相邻BSS并且同时执行DFS的扫描步骤; 基于用于测量多个信道的信道质量的现有操作BSS的扫描结果，由所述主无线设备执行的测量步骤; 基于通道质量参数选择一个通道。 本发明有利地提供了一种动态频率选择方法，而无需对IEEE 802.11标准进行任何修改，或对无线电台实现的任何要求。

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。

公开(公告)号：US07721106B2

公开(公告)日：2010-05-18

申请号：US10512674

申请日：2003-03-12

申请人： Junbiao Zhang

发明人： Junbiao Zhang

IPC分类号： G06F21/00 ,  H04L9/32 ,  G06F15/173 ,  G06F7/04 ,  H04J3/00 ,  H04J3/14 ,  H04L12/24 ,  H04B7/00

CPC分类号： H04L63/18 ,  H04L63/0435 ,  H04L63/0442 ,  H04L63/06 ,  H04L63/062 ,  H04L63/08 ,  H04L63/0884 ,  H04L63/0892 ,  H04L63/101 ,  H04L2463/062 ,  H04W8/26 ,  H04W12/04 ,  H04W12/08 ,  H04W60/00 ,  H04W60/04 ,  H04W74/00 ,  H04W80/04 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06 ,  H04W92/02

摘要： A method and a system for allowing a user device that has already been authenticated by a first communications network to gain access to a second communications network without undergoing authentication by the second communications network. The first communications network and the second communications network have a pre-established trust relationship there between. A packet is received from the user device that includes a user device public key, by the second network via the first network. A session key is sent from the second network to the user device, via the first network, when a source Internet Protocol (IP) address associated with the packet falls into a range allocated to the first network. The session key is encrypted with the user device public key. The user device decrypts the session key using a private key and uses the session key thereafter to access the second network. Further a mapping is generated to correlate the identity of the user device with the session key such that usage data relate to user device is generated by the second communications network and transmitted to the first communications network, which generates accounting information indicative of user device access of the second communications network.

摘要翻译： 一种用于允许已经由第一通信网络认证的用户设备在不经过第二通信网络的认证的情况下获得对第二通信网络的访问的方法和系统。 第一通信网络和第二通信网络之间具有预先建立的信任关系。 经由第一网络由第二网络从包括用户设备公钥的用户设备接收到分组。 当与分组相关联的源Internet协议（IP）地址落入分配给第一网络的范围时，会话密钥经由第一网络从第二网络发送到用户设备。 会话密钥用用户设备公钥加密。 用户设备使用专用密钥对会话密钥进行解密，此后使用会话密钥访问第二网络。 此外，生成映射以将用户设备的身份与会话密钥相关联，使得与用户设备相关的使用数据由第二通信网络生成并被发送到第一通信网络，其生成指示用户设备访问的会计信息 第二个通信网络。

公开(公告)号：US20100031303A1

公开(公告)日：2010-02-04

申请号：US12311373

申请日：2007-09-29

申请人： Jin Fei Yu ,  Junbiao Zhang ,  Zhi Gang Zhang

发明人： Jin Fei Yu ,  Junbiao Zhang ,  Zhi Gang Zhang

IPC分类号： H04N7/173

CPC分类号： H04L12/2801 ,  H04N21/6118

摘要： The present invention relates to a server used to transmit Ethernet data signals from an Ethernet network to multiple cable TV network clients or receive Ethernet data signals from the multiple cable TV network clients, the server comprising multiple APs (access points), wherein the APs synchronously start a downlink transmission or an uplink transmission, and wherein during the downlink transmission the APs convert the Ethernet data signals into encoded and modulated RF signals and transmit the encoded and modulated RF signals to the multiple cable TV network clients, and during the uplink transmission the encoded and modulated RF signals from the cable TV network clients and convert the encoded and modulated RF signals into the Ethernet data signals.

摘要翻译： 本发明涉及用于将以太网数据信号从以太网传输到多个有线电视网络客户端的服务器或从多个有线电视网络客户端接收以太网数据信号的服务器，该服务器包括多个AP（接入点），其中AP同步 开始下行链路传输或上行链路传输，并且其中在下行链路传输期间，AP将以太网数据信号转换成编码和调制的RF信号，并将编码和调制的RF信号发送到多个有线电视网络客户端，并且在上行链路传输期间 编码和调制的RF信号，并将编码和调制的RF信号转换成以太网数据信号。

公开(公告)号：US20090282238A1

公开(公告)日：2009-11-12

申请号：US11919279

申请日：2005-05-16

申请人： Guillaume Bichot ,  Junbiao Zhang ,  Saurabh Mathur

发明人： Guillaume Bichot ,  Junbiao Zhang ,  Saurabh Mathur

IPC分类号： G06F21/00 ,  H04L9/08

CPC分类号： H04L63/0807 ,  H04W12/02 ,  H04W12/06 ,  H04W36/0038 ,  H04W84/12

摘要： A system and method including computing keying information by a server for authentication of devices accessing a wireless local area network and forwarding the keying information by the server to access points included in a security domain of the wireless local area network, wherein one of the access points is associated with a mobile device are described.

摘要翻译： 一种系统和方法，包括由服务器计算密钥信息以验证访问无线局域网的设备，并且由服务器将密钥信息转发到无线局域网的安全域中的接入点，其中接入点之一 与移动设备相关联。

公开(公告)号：US20080130572A1

公开(公告)日：2008-06-05

申请号：US11795919

申请日：2005-01-31

申请人： Junbiao Zhang ,  Guillaume Bichot ,  Saurabh Mather

发明人： Junbiao Zhang ,  Guillaume Bichot ,  Saurabh Mather

IPC分类号： H04Q7/00

CPC分类号： H04W36/18 ,  H04L12/5692 ,  H04W80/00 ,  H04W92/02

摘要： There is provided a method for switching a mobile terminal from a first network interface to a second network interface in a local network environment. The method includes the step of utilizing a same Internet Protocol (IP) address by the mobile terminal for both the first network interface and the second network interface.

摘要翻译： 提供了一种用于在本地网络环境中将移动终端从第一网络接口切换到第二网络接口的方法。 该方法包括由移动终端为第一网络接口和第二网络接口使用相同的因特网协议（IP）地址的步骤。

公开(公告)号：US20070226499A1

公开(公告)日：2007-09-27

申请号：US11805070

申请日：2007-05-22

申请人： Junbiao Zhang

发明人： Junbiao Zhang

IPC分类号： H04L9/00

CPC分类号： H04L63/06 ,  H04L9/0844 ,  H04L63/08 ,  H04L63/18 ,  H04L2209/80 ,  H04W12/04 ,  H04W12/06 ,  H04W48/18 ,  H04W74/00 ,  H04W76/10 ,  H04W84/12 ,  H04W88/08

摘要： A method and apparatus for managing a session key for allowing a mobile terminal to access a wireless local area network (WLAN). The invention provides for establishing a first secure channel between an access point and a virtual operator, and suggesting a session key to the virtual operator from the access point. A second secure channel is established between the virtual operator and a user, and the session key is sent to the user via the second secure channel upon successful user authentication. The mobile terminal accesses the WLAN using the session key.

摘要翻译： 一种用于管理会话密钥以允许移动终端接入无线局域网（WLAN）的方法和装置。 本发明提供了在接入点和虚拟运营商之间建立第一安全信道，以及从接入点向虚拟运营商建议会话密钥。 在虚拟操作者和用户之间建立第二安全通道，并且在成功的用户认证时会话密钥通过第二安全通道发送给用户。 移动终端使用会话密钥访问WLAN。