公开(公告)号：US08433900B2

公开(公告)日：2013-04-30

申请号：US13308254

申请日：2011-11-30

Applicant: Gregory M. Lebovitz ,  Changming Liu ,  Choung-Yaw Shieh

Inventor： Gregory M. Lebovitz ,  Changming Liu ,  Choung-Yaw Shieh

IPC: H04L29/06

CPC classification number: H04L63/065 ,  H04L12/185 ,  H04L12/4633 ,  H04L63/08

Abstract: A request to receive multicast data, associated with a multicast group, may be transmitted. The request may be transmitted via a tunnel. Group keys may be received in response to the request. The group keys may be based on the multicast group. An encapsulated packet may be received via another tunnel. The encapsulated packet may be processed, using the group keys, to obtain a multicast packet associated with the multicast data. The multicast packet may be forwarded to at least one multicast recipient.

Abstract translation: 可以发送与多播组相关联的接收组播数据的请求。 请求可以通过隧道传输。 可以响应于该请求而接收组密钥。 组密钥可以基于组播组。 封装的分组可以经由另一个隧道接收。 可以使用组密钥来处理封装的分组以获得与多播数据相关联的多播分组。 多播分组可以被转发到至少一个多播接收者。

公开(公告)号：US08260780B2

公开(公告)日：2012-09-04

申请号：US12939555

申请日：2010-11-04

Applicant: Xiaosong Yang ,  Lin Chen ,  Changming Liu

Inventor： Xiaosong Yang ,  Lin Chen ,  Changming Liu

IPC: G06F7/00

CPC classification number: G06F17/30289 ,  Y10S707/953

Abstract: A system protects database operations performed on a shared resource. The system may chunk memory to form a set of memory chunks which have memory blocks, at least some of the memory blocks including database objects. The system may configure at least one binary search tree using the memory chunks as nodes and buffer a set of pointers corresponding to the memory blocks. The system may further validate the buffered pointers and dereference validated buffered pointers.

Abstract translation: 系统保护对共享资源执行的数据库操作。 系统可以块存储器以形成具有存储器块的一组存储器块，至少一些存储器块包括数据库对象。 系统可以使用存储器块作为节点来配置至少一个二叉搜索树，并且缓冲与存储器块相对应的一组指针。 该系统可以进一步验证缓冲的指针并取消引用经过验证的缓冲指针。

公开(公告)号：US20120201201A1

公开(公告)日：2012-08-09

申请号：US13452437

申请日：2012-04-20

Applicant: Changming Liu ,  Yong Kang ,  Jianlin Zeng ,  Sreekanth Reddy

Inventor： Changming Liu ,  Yong Kang ,  Jianlin Zeng ,  Sreekanth Reddy

IPC: H04W4/00

CPC classification number: H04W36/0011 ,  H04L12/4633 ,  H04L63/0876 ,  H04W8/005 ,  H04W8/02 ,  H04W8/087 ,  H04W8/18 ,  H04W8/26 ,  H04W12/04 ,  H04W28/08 ,  H04W36/0016 ,  H04W36/0061 ,  H04W36/0066 ,  H04W36/08 ,  H04W36/245 ,  H04W48/16 ,  H04W76/12 ,  H04W76/22 ,  H04W84/12 ,  H04W88/08

Abstract: A network device of a subnet determines predictive roaming information for a wireless client. Predictive roaming information can identify the wireless client and a home network subnet of the wireless client. The network device provides predictive roaming information associated with a wireless client to neighboring subnets. Neighboring subnets store received predictive roaming information, and use the predictive roaming information if the wireless client roams to them.

Abstract translation: 子网的网络设备确定无线客户端的预测漫游信息。 预测漫游信息可以识别无线客户端的无线客户端和无线客户端的归属网络子网。 网络设备向相邻子网提供与无线客户端相关联的预测漫游信息。 相邻的子网存储接收到的预测漫游信息，并且如果无线客户端漫游到它们，则使用预测漫游信息。

公开(公告)号：US20120058728A1

公开(公告)日：2012-03-08

申请号：US12877048

申请日：2010-09-07

Applicant: Huizhao Wang ,  Chris Scheers ,  Changming Liu

Inventor： Huizhao Wang ,  Chris Scheers ,  Changming Liu

IPC: H04B17/00

CPC classification number: H04W72/085 ,  H04W16/10 ,  H04W24/02 ,  H04W48/16 ,  H04W72/0493

Abstract: Wireless networking devices scan for available channels and gather data about the channels and the RF environment. Using this information, each wireless networking device determines a cost value for each available channel and a quality value for its overall RF neighborhood. Each wireless networking device select the channel with the best cost value as a candidate channel for use. The wireless networking devices may submit channel requests to the arbiter for approval. If two or more wireless networking devices are requesting the same channel, the arbiter assigns the channel to the wireless networking device with the worst RF neighborhood quality. The arbiter informs the wireless networking devices if their channel requests are approved. If a wireless networking device's channel request is not approved, the wireless networking device will rescan the remaining available channels to select a different candidate channel to be approved.

Abstract translation: 无线网络设备扫描可用频道并收集关于频道和RF环境的数据。 使用该信息，每个无线网络设备确定每个可用信道的成本值和其整个RF邻域的质量值。 每个无线网络设备选择具有最佳成本值的信道作为候选信道用于使用。 无线网络设备可以向仲裁者提交信道请求以供批准。 如果两个或多个无线网络设备正在请求相同的信道，则仲裁器将信道分配给具有最差RF邻域质量的无线网络设备。 仲裁器通知无线网络设备，如果他们的频道请求被批准。 如果无线网络设备的信道请求未被批准，则无线网络设备将重新扫描剩余的可用信道以选择要批准的不同的候选信道。

公开(公告)号：US08121026B2

公开(公告)日：2012-02-21

申请号：US12568831

申请日：2009-09-29

Applicant: Changming Liu ,  Xiaosong Yang ,  Lin Chen

Inventor： Changming Liu ,  Xiaosong Yang ,  Lin Chen

IPC: H04J1/16

CPC classification number: G06T3/0093 ,  G06F17/30289 ,  G06F17/30994 ,  G06T11/60 ,  H04L43/0817 ,  H04L45/00 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28

Abstract: A network device includes a group of interfaces. Each interface is associated with at least one other interface of the group of interfaces and a group of network addresses. Each interface is configured to monitor at least one of the group of network addresses with which the each interface is associated or the at least one other interface with which the each interface is associated, and determine whether to logically shut down based on the monitoring.

Abstract translation: 网络设备包括一组接口。 每个接口与该组接口和一组网络地址的至少一个其他接口相关联。 每个接口被配置为监视每个接口与之相关联的一组网络地址中的至少一个或与每个接口相关联的至少一个其他接口，并且基于监视来确定是否逻辑关闭。

公开(公告)号：US07853591B1

公开(公告)日：2010-12-14

申请号：US11428205

申请日：2006-06-30

Applicant: Xiaosong Yang ,  Lin Chen ,  Changming Liu

Inventor： Xiaosong Yang ,  Lin Chen ,  Changming Liu

IPC: G06F7/00

CPC classification number: G06F17/30289 ,  Y10S707/953

Abstract: A system protects database operations performed on a shared resource. The system may chunk memory to form a set of memory chunks which have memory blocks, at least some of the memory blocks including database objects. The system may configure at least one binary search tree using the memory chunks as nodes and buffer a set of pointers corresponding to the memory blocks. The system may further validate the buffered pointers and dereference validated buffered pointers.

Abstract translation: 系统保护对共享资源执行的数据库操作。 系统可以块存储器以形成具有存储器块的一组存储器块，至少一些存储器块包括数据库对象。 系统可以使用存储器块作为节点来配置至少一个二叉搜索树，并且缓冲与存储器块相对应的一组指针。 该系统可以进一步验证缓冲的指针并取消引用经过验证的缓冲指针。

公开(公告)号：US07839771B2

公开(公告)日：2010-11-23

申请号：US12070863

申请日：2008-02-21

Applicant: Jianlin Zeng ,  Changming Liu

Inventor： Jianlin Zeng ,  Changming Liu

IPC: G01R31/08

CPC classification number: H04W24/04 ,  H04W88/10

Abstract: A method and corresponding system for providing for recovering from a failure of a wired link used for communication between the first access point and a wired network. The first access point has at least two radios including a first radio and a second radio each for providing a wireless communications link. The method including selectively configuring the radios in an access mode for enabling a communications path with a corresponding client node to enable each client node to have a communication path via the first access point to the wired network, wherein the first and second radios are enabled to be associated with a first and second client node, respectively. The method and system includes providing communications paths for the client nodes to the wired network in response to detection of loss of the wired link to the first access point by selectively reconfiguring the second radio to a backhaul mode.

Abstract translation: 一种用于提供从用于第一接入点和有线网络之间的通信的有线链路的故障中恢复的方法和对应系统。 第一接入点具有包括第一无线电和第二无线电的至少两个无线电装置，用于提供无线通信链路。 该方法包括以访问模式选择性地配置无线电，以便能够与对应的客户机节点通信路径，以使得每个客户端节点能够经由第一接入点到有线网络的通信路径，其中第一和第二无线电被使能到 分别与第一和第二客户端节点相关联。 所述方法和系统包括通过有选择地将第二无线电重新配置为回程模式来响应于检测到到第一接入点的有线链路的丢失而向有线网络提供用于客户端节点的通信路径。