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：US08131876B2

公开(公告)日：2012-03-06

申请号：US12310828

申请日：2007-09-12

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

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

IPC分类号： G06F15/16

CPC分类号： H04L12/6418 ,  H04L5/143 ,  H04L27/0002

摘要： The present invention relates a bidirectional signal transmission apparatus and method, wherein said apparatus comprises a processor unit connected in signal communication with an Ethernet, an RF modulation/demodulation unit, and an RF frequency conversion unit connected in signal communication with a coaxial cable network. The data signal input from the Ethernet is modulated into standard IEEE802.11 signal by means of said signal processing unit and RF modulation/demodulation unit, and then down-converted from 2.4 GHz or 5.8 GHz standard IEEE802.11 signal to a range of 500 MHz to 2000 MHz, and preferably to a range of 900 MHz to 1200 MHz. The bidirectional transmission apparatus further includes a frequency band selector for selecting different frequency bands so as to broaden the bandwidth of the signal and a real broad band data transmission is accomplished.

摘要翻译： 本发明涉及一种双向信号传输装置和方法，其中所述装置包括与以太网进行信号通信连接的处理器单元，RF调制/解调单元和与同轴电缆网络进行信号通信连接的RF频率转换单元。 从以太网输入的数据信号通过所述信号处理单元和RF调制/解调单元被调制成标准IEEE802.11信号，然后从2.4GHz或5.8GHz标准IEEE802.11信号下变频到500 MHz至2000MHz，优选为900MHz至1200MHz的范围。 双向发送装置还包括用于选择不同频带的频带选择器，以便扩大信号的带宽，并实现实际的宽带数据传输。

公开(公告)号：US20100064330A1

公开(公告)日：2010-03-11

申请号：US12310828

申请日：2007-09-12

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

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

IPC分类号： H04N7/173 ,  H04W84/02

CPC分类号： H04L12/6418 ,  H04L5/143 ,  H04L27/0002

摘要： The present invention relates a bidirectional signal transmission apparatus and method, wherein said apparatus comprises a processor unit connected in signal communication with an Ethernet, an RF modulation/demodulation unit, and an RF frequency conversion unit connected in signal communication with a coaxial cable network. The data signal input from the Ethernet is modulated into standard IEEE802.11 signal by means of said signal processing unit and RF modulation/demodulation unit, and then down-converted from 2.4 GHz or 5.8 GHz standard IEEE802.11 signal to a range of 500 MHz to 2000 MHz, and preferably to a range of 900 MHz to 1200 MHz. The bidirectional transmission apparatus further includes a frequency band selector for selecting different frequency bands so as to broaden the bandwidth of the signal and a real broad band data transmission is accomplished.

摘要翻译： 本发明涉及一种双向信号传输装置和方法，其中所述装置包括与以太网进行信号通信连接的处理器单元，RF调制/解调单元和与同轴电缆网络进行信号通信连接的RF频率转换单元。 从以太网输入的数据信号通过所述信号处理单元和RF调制/解调单元被调制成标准IEEE802.11信号，然后从2.4GHz或5.8GHz标准IEEE802.11信号下变频到500 MHz至2000MHz，优选为900MHz至1200MHz的范围。 双向发送装置还包括用于选择不同频带的频带选择器，以便扩大信号的带宽，并实现实际的宽带数据传输。

公开(公告)号：US20090161687A1

公开(公告)日：2009-06-25

申请号：US12226233

申请日：2007-04-10

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

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

IPC分类号： H04J4/00 ,  H04N7/173

CPC分类号： H04L12/2801 ,  H04N21/234 ,  H04N21/238 ,  H04N21/6118 ,  H04N21/6168 ,  H04N21/643

摘要： The present invention relates to a medium access control method for data communication through CATV access network over coaxial cable, wherein the method comprises transmitting downstream data frames from a central device to network terminals in downstream time slots of super frames and receiving upstream data frames from said network terminals to said central device in upstream time slots of the super frames over a same carrier frequency, said super frame being divided into multiple time slots comprising at least one downstream time slot intended for transmitting data frames, and one or more upstream time slots which are assigned respectively by said central device to said network terminals for transmitting upstream data frames, each one upstream time slot being allocable to one network terminal. Advantageously, the data is transmitted through a CATV access network over coaxial cable by using this access control method with guaranteed QoS.

摘要翻译： 本发明涉及一种用于通过同轴电缆的CATV接入网进行数据通信的媒体接入控制方法，其特征在于，该方法包括：在超帧的下行时隙中从中央设备将下行数据帧发送到网络终端，并接收来自所述 网络终端在相同载波频率的超帧的上行时隙中到所述中央设备，所述超帧被划分成多个时隙，包括用于发送数据帧的至少一个下行时隙，以及一个或多个上行时隙， 分别由所述中央设备分配给所述网络终端用于发送上行数据帧，每个上行时隙可分配给一个网络终端。 有利的是，通过使用具有保证QoS的访问控制方法，通过同轴电缆通过CATV接入网络传输数据。

公开(公告)号：US09270408B2

公开(公告)日：2016-02-23

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： H04W4/00 ,  H04L1/00

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：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：US08582773B2

公开(公告)日：2013-11-12

申请号：US10559889

申请日：2004-07-27

申请人： Junbiao Zhang ,  Saurabh Mathur

发明人： Junbiao Zhang ,  Saurabh Mathur

IPC分类号： H04L29/06

CPC分类号： H04L63/062 ,  H04L9/0891 ,  H04L9/12 ,  H04L63/068 ,  H04L2209/80 ,  H04W12/04 ,  H04W84/12 ,  H04W88/08

摘要： A key synchronization mechanism for wireless LANs is provided where the access point (AP) does not start using a new encryption key until the first data frame correctly encrypted with the new key is received from the station (STA). The new key is used from this point on, until the expiration of a key refresh interval.

摘要翻译： 提供了一种用于无线LAN的密钥同步机制，其中在从站（STA）接收到使用新密钥正确加密的第一数据帧之前，接入点（AP）不开始使用新的加密密钥。 从这一点开始使用新密钥，直到密钥刷新间隔到期。

公开(公告)号：US08577348B2

公开(公告)日：2013-11-05

申请号：US11883040

申请日：2005-01-31

申请人： Jun Li ,  Junbiao Zhang ,  Kumar Ramaswamy

发明人： Jun Li ,  Junbiao Zhang ,  Kumar Ramaswamy

IPC分类号： H04L29/06

CPC分类号： H04L29/06027 ,  H04L65/4084 ,  H04L65/602 ,  H04L67/1095 ,  H04L67/2814 ,  H04L67/288 ,  H04L69/329

摘要： There is provided a system for providing content through a Content Delivery/distribution Network (CDN) that includes a plurality of storage entities. A Content Requesting device (CR) generates and transmits requests for content. A Content Server (CS) receives the requests from the CR, provides notifications regarding a current location of the content, and at least one of stores the content and interfaces with the CDN to distribute the content to one of the plurality of storage entities. A Content Consuming device (CC) receives the notifications from the CS and retrieves the requested content from one of the CS and the one of the plurality of storage entities based on the current location of the content specified in the notifications.

摘要翻译： 提供了一种通过包括多个存储实体的内容传送/分发网络（CDN）来提供内容的系统。 内容请求设备（CR）生成并发送内容请求。 内容服务器（CS）从CR接收请求，提供关于内容的当前位置的通知，以及存储与CDN的内容和接口中的至少一个，以将内容分发到多个存储实体之一。 内容消费设备（CC）从CS接收通知，并根据通知中指定的内容的当前位置从CS和多个存储实体中的一个检索所请求的内容。

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：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。