公开(公告)号：US08023426B2

公开(公告)日：2011-09-20

申请号：US12449760

申请日：2007-03-01

申请人： Hang Liu ,  Lin Luo ,  Mingquan Wu ,  Dekai Li

发明人： Hang Liu ,  Lin Luo ,  Mingquan Wu ,  Dekai Li

IPC分类号： G01R31/08

CPC分类号： H04W48/20 ,  H04L45/20 ,  H04L45/26 ,  H04W40/12 ,  H04W40/22 ,  H04W40/246 ,  Y02D70/22 ,  Y02D70/34 ,  Y02D70/39

摘要： A method and apparatus are described for selecting an access point in a wireless network, including initializing a channel index, recording a received signal power and information contained in one of a beacon message and a probe request response message, calculating an access link metric for each candidate access point, the access link 13 metric being between an end device and each candidate access point on the channel indexed by the channel index responsive to the received signal power and information receiving a path metric between each candidate access point and a gateway, estimating a function using the access link metric and the path metric, selecting one of the candidate access points based on the function and establishing a connection with the selected access point. Also described is a method and apparatus for maintaining a connection with an access point.

摘要翻译： 描述了一种在无线网络中选择接入点的方法和装置，包括初始化信道索引，记录接收到的信号功率和包含在信标消息和探测请求响应消息之一中的信息，计算每个 候选接入点，响应于接收到的信号功率的由信道索引索引的信道上的终端设备和每个候选接入点之间的接入链路13度量以及接收每个候选接入点和网关之间的路径量度的信息，估计一个 功能，使用接入链路量度和路径度量，基于该功能选择一个候选接入点，并建立与所选接入点的连接。 还描述了一种用于维持与接入点的连接的方法和装置。

公开(公告)号：US20110080977A1

公开(公告)日：2011-04-07

申请号：US12737173

申请日：2008-06-27

申请人： Hang Liu ,  Ishan Mandrekar ,  Minquan Wu ,  Ramkumar Perumanam ,  Saurabh Mathur

发明人： Hang Liu ,  Ishan Mandrekar ,  Minquan Wu ,  Ramkumar Perumanam ,  Saurabh Mathur

IPC分类号： H04L27/00

CPC分类号： H04W72/005 ,  H04W74/004 ,  H04W74/006 ,  H04W84/12

摘要： Message formats and apparatus are described that serve to reserve access to a communication medium in a multi-cast system. A first message, a multicast request-to-send message, includes a duration field having information representing the reserved time for a communication medium, a multicast receiver address field, a multicast transmitter address field, a field that identifies the number of slots for a clear-to-send response, and a field that identifies the number slots for a not-clear-to-send response. A second message includes a duration field, and a multicast receive address field. The second message has a format that can be used as one of a clear-to-send message in response to a multicast request-to-send message, a cancel-clear-to-send message that cancels a data transmission after the clear-to-send message is sent, and a not-clear-to-send message in response to the multicast request-to-send message.

摘要翻译： 描述了用于预留对多播系统中的通信介质的访问的消息格式和装置。 第一消息，组播请求发送消息包括具有表示通信介质的保留时间的信息的持续时间字段，多播接收器地址字段，多播发送器地址字段，标识一个 清除发送响应，以及标识不清楚发送响应的号码位的字段。 第二消息包括持续时间字段和多播接收地址字段。 第二消息具有可以用作响应于多播请求发送消息的清除发送消息之一的格式，在清除发送消息之后取消数据传输的取消清除发送消息， 发送消息，以及响应于多播请求发送消息的不清除发送消息。

公开(公告)号：US20110064013A1

公开(公告)日：2011-03-17

申请号：US12736846

申请日：2008-06-23

申请人： Hang Liu ,  Ishan Mandrekar ,  Minquan Wu ,  Ramkumar Perumanam ,  Saurabh Mathur

发明人： Hang Liu ,  Ishan Mandrekar ,  Minquan Wu ,  Ramkumar Perumanam ,  Saurabh Mathur

IPC分类号： H04H20/71

CPC分类号： H04W4/06 ,  H04L1/1685 ,  H04L12/1863 ,  H04L12/189 ,  H04W72/005 ,  H04W74/0816

摘要： A method and apparatus are described including multicasting a medium reservation message, receiving responses to the medium reservation message and determining if a ratio of the received responses to an expected number of responses exceeds a threshold. Also described are a method and apparatus including receiving a medium reservation message, determining if the medium reservation message specifies this receiver in a list of receivers from which a response is requested, determining if a medium is idle and transmitting the response to the medium reservation message responsive to the second determination.

摘要翻译： 描述了一种方法和装置，包括组播媒体预约消息，接收对媒体预约消息的响应，以及确定接收到的响应与预期响应数量的比率是否超过阈值。 还描述了一种方法和装置，包括接收媒体预约消息，确定媒体预约消息是否在请求响应的接收者的列表中指定该接收机，确定媒体是否空闲并且将响应发送到媒体预约消息 响应于第二次确定。

公开(公告)号：US20100322141A1

公开(公告)日：2010-12-23

申请号：US12736018

申请日：2008-03-11

申请人： Hang Liu ,  Lin Luo ,  Mingquan Wu ,  Dekai Li

发明人： Hang Liu ,  Lin Luo ,  Mingquan Wu ,  Dekai Li

IPC分类号： H04J3/08

CPC分类号： H04W28/20 ,  H04W24/10 ,  H04W28/18 ,  H04W40/26 ,  H04W48/16 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/0433 ,  H04W84/18

摘要： A method and apparatus are described including collecting network information, determining an association, bandwidth allocation and routing scheme based on the collected network information, notifying a mesh access point of the association, the bandwidth allocation and the routing scheme and notifying a client node of its association information. Also described are a method and apparatus including measuring link quality and channel conditions, reporting results of the measuring act to a controller, receiving a routing decision and data forwarding instructions from the controller and forwarding the routing decision and the data forwarding instructions to a client node. Further described are a method and apparatus including measuring link quality and channel conditions, reporting results of the measuring act to a controller, receiving association instructions from the centralized controller and updating previously stored association instructions with the received association instructions.

摘要翻译： 描述了一种方法和装置，包括基于收集的网络信息收集网络信息，确定关联，带宽分配和路由方案，通知关联的网格接入点，带宽分配和路由方案，并将客户端节点通知其 关联信息。 还描述了一种方法和装置，包括测量链路质量和信道条件，将测量动作的结果报告给控制器，从控制器接收路由决策和数据转发指令，并将路由决策和数据转发指令转发到客户端节点 。 进一步描述了一种方法和装置，包括测量链路质量和信道状况，将测量动作的结果报告给控制器，从集中式控制器接收关联指令，并用接收到的关联指令更新先前存储的关联指令。

公开(公告)号：US20100092178A1

公开(公告)日：2010-04-15

申请号：US12224537

申请日：2006-03-01

申请人： Hang Liu ,  Wen Gao

发明人： Hang Liu ,  Wen Gao

IPC分类号： H04B10/16

CPC分类号： H04B10/0771 ,  H04B2210/077

摘要： A method and apparatus is provided for applying an electroding tone to a power conductor located in an undersea optical cable employed in an undersea optical transmission system having at least one repeater. The method begins by applying a DC line current to the power conductor. The DC line current has a value sufficient to power the repeater and less than a value sufficient to power the repeater and to perform electroding. An AC current is impressed on the DC line current at a prescribed frequency and a peak-to-peak amplitude ranging from zero and a prescribed value to generate the tone. The impression or application of the AC current is terminated after a period of time at least sufficient to locate the optical cable or an optical cable fault.

摘要翻译： 提供一种方法和装置，用于向位于具有至少一个中继器的海底光传输系统中使用的海底光缆中的电力导体施加电喷音。 该方法开始于将直流线路电流施加到电力导体。 DC线电流具有足够的功率给中继器供电并且小于足以为中继器供电并执行电镀的值。 在规定频率的直流线电流上施加交流电流，从零到规定值的峰 - 峰幅度产生音调。 AC电流的印象或应用在至少足以定位光缆或光缆故障的一段时间后终止。

公开(公告)号：US20100091669A1

公开(公告)日：2010-04-15

申请号：US12449760

申请日：2007-03-01

申请人： Hang Liu ,  Lin Luo ,  Mingquan Wu ,  Dekai Li

发明人： Hang Liu ,  Lin Luo ,  Mingquan Wu ,  Dekai Li

IPC分类号： H04J1/16 ,  H04W4/00

CPC分类号： H04W48/20 ,  H04L45/20 ,  H04L45/26 ,  H04W40/12 ,  H04W40/22 ,  H04W40/246 ,  Y02D70/22 ,  Y02D70/34 ,  Y02D70/39

摘要： A method and apparatus are described for selecting an access point in a wireless network, including initializing a channel index, recording a received signal power and information contained in one of a beacon message and a probe request response message, calculating an access link metric for each candidate access point, the access link metric being between an end device and each candidate access point on the channel indexed by the channel index responsive to the received signal power and information receiving a path metric between each candidate access point and a gateway, estimating a function using the access link metric and the path metric, selecting one of the candidate access points based on the function and establishing a connection with the selected access point. Also described is a method and apparatus for maintaining a connection with an access point.

摘要翻译： 描述了一种在无线网络中选择接入点的方法和装置，包括初始化信道索引，记录接收到的信号功率和包含在信标消息和探测请求响应消息之一中的信息，计算每个 候选接入点，所述接入链路度量位于终端设备与响应于所接收的信号功率的信道索引索引的信道上的每个候选接入点之间，以及接收每个候选接入点和网关之间的路径度量的信息，估计功能 使用接入链路量度和路径度量，基于该功能选择一个候选接入点，并建立与所选接入点的连接。 还描述了一种用于维持与接入点的连接的方法和装置。

公开(公告)号：US20100074194A1

公开(公告)日：2010-03-25

申请号：US12449040

申请日：2007-02-07

申请人： Hang Liu ,  Lin Luo

发明人： Hang Liu ,  Lin Luo

IPC分类号： H04W40/00

CPC分类号： H04W40/12 ,  H04L45/124 ,  H04L45/26

摘要： A method and system are described for establishing an end-to-end route for data to traverse a wireless network, including calculating a link cost function, calculating a quantized link cost function using the calculated link cost, function, calculating a quantized cost of each of a plurality, of end-to-end routes for data to traverse the wireless network, wherein the plurality of end-to-end routes include routes between a same set of nodes in the wireless network, wherein, the quantized cost of each of the plurality of end-to-end routes for data to traverse the wireless network is performed using the quantized link cost function and selecting one of the plurality of end-to-end routes, for data to traverse the wireless network based on the quantized cost of each of the plurality of end-to-end routes. Also described is a node in a wireless network configured to participate in the establishment of a bi-directional end-to-end route for data to traverse the wireless network.

摘要翻译： 描述了一种用于建立用于遍历无线网络的数据的端对端路由的方法和系统，包括计算链路成本函数，使用所计算的链路成本，功能计算量化的链路成本函数，计算每个 多个用于数据穿过无线网络的端对端路由，其中​​多个端到端路由包括无线网络中同一组节点之间的路由，其中​​，每个路由的量化成本 用于数据穿越无线网络的多个端对端路由是使用量化的链路成本函数来执行的，并且选择多个端到端路由中的一个，以便数据基于量化成本来遍历无线网络 的多个端到端路由中的每一个。 还描述了无线网络中的节点，被配置为参与建立用于数据穿越无线网络的双向端对端路由。

公开(公告)号：USD611021S1

公开(公告)日：2010-03-02

申请号：US29329979

申请日：2008-12-24

申请人： Hang Liu

设计人： Hang Liu

公开(公告)号：US20100046400A1

公开(公告)日：2010-02-25

申请号：US12450669

申请日：2007-04-04

申请人： Mingquan Wu ,  Hang Liu

发明人： Mingquan Wu ,  Hang Liu

IPC分类号： H04L12/28 ,  H04H20/71

CPC分类号： H04L12/189 ,  H04L45/16 ,  H04L45/48 ,  H04W8/26 ,  H04W40/22 ,  H04W40/24 ,  H04W72/005 ,  H04W76/10 ,  H04W88/04

摘要： A method and apparatus for multicast communications in a multi-hop relay network are described including sending an extended request message, wherein the request message includes a multicast connection identification, multicast distribution tree information and a path identification and receiving an extended response message. Correspondingly, a method and apparatus for multicast communications in a multi-hop relay network are described including receiving an extended request message, wherein said request message includes a multicast connection identification, multicast distribution tree information and a path identification and sending an extended response message.

摘要翻译： 描述了一种多跳中继网络中的组播通信的方法和装置，包括：发送扩展请求消息，其中所述请求消息包括多播连接标识，组播分发树信息和路径标识，并接收扩展响应消息。 相应地，描述了一种用于多跳中继网络中的组播通信的方法和装置，包括接收扩展请求消息，其中所述请求消息包括多播连接标识，组播分配树信息和路径标识，并发送扩展响应消息。

公开(公告)号：US20090252096A1

公开(公告)日：2009-10-08

申请号：US12084617

申请日：2006-11-01

申请人： Hang Liu ,  Wen Gao

发明人： Hang Liu ,  Wen Gao

IPC分类号： H04W72/04

CPC分类号： H04W16/10 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0062 ,  H04W52/04

摘要： A wireless endpoint is a Wireless Regional Area Network (WRAN) endpoint, such as a base station (BS) or customer premise equipment (CPE). The WRAN endpoint can transmit an orthogonal frequency division multiplexed (OFDM) signal comprising 2048 subcarriers in a channel. The 2048 subcarriers are divided into 16 subcarrier sets, or subchannels, each subcarrier set comprising 128 subcarriers. However, upon detection of an incumbent narrowband signal in the channel, the WRAN endpoint forms a frequency usage map for transmission to another WRAN endpoint, wherein the frequency usage map identifies one, or more, of the subcarrier sets that would interfere with the incumbent narrowband signal.

摘要翻译： 无线终端是无线区域网络（WRAN）端点，例如基站（BS）或客户驻地设备（CPE）。 WRAN端点可以在信道中发送包括2048个子载波的正交频分复用（OFDM）信号。 2048个子载波被分成16个子载波组或子信道，每个子载波集包括128个子载波。 然而，在检测到信道中的现有窄带信号时，WRAN端点形成用于传输到另一个WRAN端点的频率使用图，其中，频率使用图识别干扰现有窄带的子载波集合中的一个或多个 信号。