公开(公告)号：US20050096073A1

公开(公告)日：2005-05-05

申请号：US11011010

申请日：2004-12-13

申请人： Paramvir Bahl ,  Atul Adya ,  Jitendra Padhye

发明人： Paramvir Bahl ,  Atul Adya ,  Jitendra Padhye

IPC分类号： H04B7/005 ,  H04H20/00 ,  H04L12/28 ,  H04W52/02 ,  H04W52/46 ,  H04W74/04 ,  H04W84/12 ,  H04W88/04 ,  H04W88/06 ,  G08B5/22

CPC分类号： H04W52/0216 ,  H04W52/0219 ,  H04W52/0241 ,  H04W52/46 ,  H04W72/14 ,  H04W84/12 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/1226 ,  Y02D70/142

摘要： A method and system for optimizing channel access scheduling for multiple wireless computing devices over a wireless network improves channel access efficiency with respect to a primary channel. An access point, or host computer, includes a host transceiver for receiving control information from the wireless computing devices over a low power channel. Upon receiving the control information, the access point applies a scheduling algorithm to schedule channel access for the wireless computing devices to transmit data over the primary communication channel. The wireless computing devices include a low power radio for receiving scheduling information via the low power channel during idle periods. When the scheduling information is received, the wireless computing device activates its primary channel network interface components to communicate data through the primary channel. When the computing device is idle, the device is configured to power down all of its components with the exception of the circuitry required to power the low power channel. As such, the low power channel is maintained in an active state for receiving scheduling information, such as an access schedule, during both idle and non-idle periods.

公开(公告)号：US07760654B2

公开(公告)日：2010-07-20

申请号：US11047190

申请日：2005-01-31

申请人： Atul Adya ,  Paramvir Bahl ,  Ranveer Chandra

发明人： Atul Adya ,  Paramvir Bahl ,  Ranveer Chandra

IPC分类号： H04L12/26 ,  H04W4/00 ,  H04W24/00 ,  G06F15/173

CPC分类号： H04W24/04 ,  H04W12/12 ,  H04W24/08 ,  H04W84/18 ,  H04W88/06

摘要： Systems and methods are described for using client conduits to enable bootstrapping and fault diagnosis of disconnected wireless clients. Client conduits are used to enable disconnected clients to diagnose their problems with the help of nearby clients. This technique may take advantage of the beaconing and probing mechanisms of IEEE 802.11 to ensure that connected clients do not pay unnecessary overheads for detecting disconnected clients. Methods are also described for detecting rogue devices disguising as disconnected clients.

摘要翻译： 描述了使用客户端管道来实现断开连接的无线客户端的自举和故障诊断的系统和方法。 客户端管道用于使不连接的客户端能够在附近客户的帮助下诊断他们的问题。 这种技术可以利用IEEE 802.11的信标和探测机制来确保连接的客户端不会为检测断开的客户端支付不必要的开销。 还描述了用于检测伪装成断开的客户端的流氓设备的方法。

公开(公告)号：US07142855B2

公开(公告)日：2006-11-28

申请号：US11011011

申请日：2004-12-13

申请人： Paramvir Bahl ,  Atul Adya ,  Jitendra D. Pahhye

发明人： Paramvir Bahl ,  Atul Adya ,  Jitendra D. Pahhye

IPC分类号： H04Q7/20 ,  H04Q7/24

CPC分类号： H04W52/0216 ,  H04W52/0219 ,  H04W52/0241 ,  H04W52/46 ,  H04W72/14 ,  H04W84/12 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/1226 ,  Y02D70/142

摘要： A method and system for optimizing channel access scheduling for multiple wireless computing devices over a wireless network improves channel access efficiency with respect to a primary channel. An access point, or host computer, includes a host transceiver for receiving control information from the wireless computing devices over a low power channel. Upon receiving the control information, the access point applies a scheduling algorithm to schedule channel access for the wireless computing devices to transmit data over the primary communication channel. The wireless computing devices include a low power radio for receiving scheduling information via the low power channel during idle periods. When the scheduling information is received, the wireless computing device activates its primary channel network interface components to communicate data through the primary channel. When the computing device is idle, the device is configured to power down all of its components with the exception of the circuitry required to power the low power channel. As such, the low power channel is maintained in an active state for receiving scheduling information, such as an access schedule, during both idle and non-idle periods.

公开(公告)号：US20060077946A1

公开(公告)日：2006-04-13

申请号：US11047190

申请日：2005-01-31

申请人： Atul Adya ,  Paramvir Bahl ,  Ranveer Chandra

发明人： Atul Adya ,  Paramvir Bahl ,  Ranveer Chandra

IPC分类号： H04J3/24

CPC分类号： H04W24/04 ,  H04W12/12 ,  H04W24/08 ,  H04W84/18 ,  H04W88/06

摘要： Systems and methods are described for using client conduits to enable bootstrapping and fault diagnosis of disconnected wireless clients. Client conduits are used to enable disconnected clients to diagnose their problems with the help of nearby clients. This technique may take advantage of the beaconing and probing mechanisms of IEEE 802.11 to ensure that connected clients do not pay unnecessary overheads for detecting disconnected clients. Methods are also described for detecting rogue devices disguising as disconnected clients.

摘要翻译： 描述了使用客户端管道来实现断开连接的无线客户端的自举和故障诊断的系统和方法。 客户端管道用于使不连接的客户端能够在附近客户的帮助下诊断他们的问题。 这种技术可以利用IEEE 802.11的信标和探测机制来确保连接的客户端不会为检测断开的客户端支付不必要的开销。 还描述了用于检测伪装成断开的客户端的流氓设备的方法。

公开(公告)号：US20050101320A1

公开(公告)日：2005-05-12

申请号：US11011011

申请日：2004-12-13

申请人： Paramvir Bahl ,  Atul Adya ,  Jitendra Padhye

发明人： Paramvir Bahl ,  Atul Adya ,  Jitendra Padhye

IPC分类号： H04B7/005 ,  H04H20/00 ,  H04L12/28 ,  H04W52/02 ,  H04W52/46 ,  H04W74/04 ,  H04W84/12 ,  H04W88/04 ,  H04W88/06 ,  H04Q7/20 ,  H04B7/00

CPC分类号： H04W52/0216 ,  H04W52/0219 ,  H04W52/0241 ,  H04W52/46 ,  H04W72/14 ,  H04W84/12 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/1226 ,  Y02D70/142

摘要： A method and system for optimizing channel access scheduling for multiple wireless computing devices over a wireless network improves channel access efficiency with respect to a primary channel. An access point, or host computer, includes a host transceiver for receiving control information from the wireless computing devices over a low power channel. Upon receiving the control information, the access point applies a scheduling algorithm to schedule channel access for the wireless computing devices to transmit data over the primary communication channel. The wireless computing devices include a low power radio for receiving scheduling information via the low power channel during idle periods. When the scheduling information is received, the wireless computing device activates its primary channel network interface components to communicate data through the primary channel. When the computing device is idle, the device is configured to power down all of its components with the exception of the circuitry required to power the low power channel. As such, the low power channel is maintained in an active state for receiving scheduling information, such as an access schedule, during both idle and non-idle periods.

公开(公告)号：US20070160002A1

公开(公告)日：2007-07-12

申请号：US11709962

申请日：2007-02-23

申请人： Alastair Wolman ,  Atul Adya ,  Paramvir Bahl ,  Jitendra Padhye ,  Lidong Zhou

发明人： Alastair Wolman ,  Atul Adya ,  Paramvir Bahl ,  Jitendra Padhye ,  Lidong Zhou

IPC分类号： H04Q7/00

CPC分类号： H04W92/18 ,  H04L29/06 ,  H04L69/14 ,  H04W72/08 ,  H04W74/02 ,  H04W80/04 ,  H04W84/12 ,  H04W84/18 ,  H04W88/04 ,  H04W88/06

摘要： An invention is disclosed whereby a wireless network node, equipped with two or more radio transceivers statically tuned to non-interfering frequency channels, can make decisions regarding which channel to use when communicating with a neighboring wireless node. A multi-radio unification protocol implemented in a wireless node coordinates the use of multiple wireless network interface cards and provides a virtual layer that hides the multiple physical network interfaces from higher layers of a node's network protocol stack. The invention is applicable to wireless networks generally, including those in which some nodes do not have multiple radios or do not recognize the multi-radio unification protocol. The invention makes possible simultaneous transmissions using available channels, thereby reducing interference and delay while increasing the overall capacity of the network.

公开(公告)号：US07203463B2

公开(公告)日：2007-04-10

申请号：US11345907

申请日：2006-02-02

申请人： Paramvir Bahl ,  Atul Adya ,  Jitendra D. Padhye

发明人： Paramvir Bahl ,  Atul Adya ,  Jitendra D. Padhye

IPC分类号： H04B1/00 ,  H04B7/00 ,  H04Q7/20 ,  H04Q1/30 ,  H04H1/00

CPC分类号： H04W52/0216 ,  H04W52/0219 ,  H04W52/0241 ,  H04W52/46 ,  H04W72/14 ,  H04W84/12 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/1226 ,  Y02D70/142

摘要： A method and system for optimizing channel access scheduling for multiple wireless computing devices over a wireless network improves channel access efficiency with respect to a primary channel. An access point, or host computer, includes a host transceiver for receiving control information from the wireless computing devices over a low power channel. Upon receiving the control information, the access point applies a scheduling algorithm to schedule channel access for the wireless computing devices to transmit data over the primary communication channel. The wireless computing devices include a low power radio for receiving scheduling information via the low power channel during idle periods. When the scheduling information is received, the wireless computing device activates its primary channel network interface components to communicate data through the primary channel. When the computing device is idle, the device is configured to power down all of its components with the exception of the circuitry required to power the low power channel. As such, the low power channel is maintained in an active state for receiving scheduling information, such as an access schedule, during both idle and non-idle periods.

摘要翻译： 通过无线网络优化用于多个无线计算设备的信道接入调度的方法和系统提高了相对于主信道的信道接入效率。 接入点或主机包括主机收发器，用于通过低功率信道从无线计算设备接收控制信息。 在接收到控制信息时，接入点应用调度算法来调度无线计算设备的信道接入以通过主通信信道发送数据。 无线计算设备包括用于在空闲时段期间经由低功率信道接收调度信息的低功率无线电。 当接收到调度信息时，无线计算设备激活其主要信道网络接口组件以通过主要信道传送数据。 当计算设备空闲时，除了为低功率通道供电所需的电路之外，该设备被配置为关闭其所有组件的电源。 因此，在空闲和非空闲时段期间，低功率信道被维持在活动状态以用于接收调度信息，诸如访问调度。

公开(公告)号：US20060293079A1

公开(公告)日：2006-12-28

申请号：US11511757

申请日：2006-08-28

申请人： Paramvir Bahl ,  Atul Adya ,  Alastair Wolman ,  Jitendra Padhye

发明人： Paramvir Bahl ,  Atul Adya ,  Alastair Wolman ,  Jitendra Padhye

IPC分类号： H04M1/00

CPC分类号： H04W52/0277 ,  Y02D70/1222 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： Described herein is an implementation that reduces the battery consumption of an energy-constrained computing device that is capable of communicating over a wireless network. As conditions and circumstances warrant, the implementation selects one of multiple radios (e.g., two)—with each having a unique combination of characteristics (in terms of power-consumption, data-rate, range and/or frequency band of operation) for wireless communications to and from a wireless device. The implementation selects one radio to minimize power-consumption while maintaining effective wireless data communication. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.

公开(公告)号：US20060215624A1

公开(公告)日：2006-09-28

申请号：US11091641

申请日：2005-03-28

申请人： Atul Adya ,  Paramvir Bahl ,  Jitendra Padhye ,  Alastair Wolman

发明人： Atul Adya ,  Paramvir Bahl ,  Jitendra Padhye ,  Alastair Wolman

IPC分类号： H04L12/26 ,  H04Q7/24

CPC分类号： H04W8/005 ,  H04W84/18

摘要： Disclosed is a Neighbor Location Discovery Protocol (NLDP) that determines the relative locations of the nodes in a mesh network. In one embodiment, NLDP can be implemented for an ad-hoc wireless network where the nodes are equipped with directional antennas and are not able to use GPS. While NLDP relies on nodes having at least two RF transceivers, it offers significant advantages over previously proposed protocols that employ only one RF transceiver. In NLDP antenna hardware is simple, easy to implement, and readily available. Further, NLDP exploits the host node's ability to operate simultaneously over non-overlapping channels to quickly converge on the neighbor's location. NLDP is limited by the range of the control channel, which operates in a omni-directional fashion. However, by choosing a low frequency band, high power, and low data rate, the range of the control channel can be increased to match the range on the data channel.

摘要翻译： 公开了一种确定网状网络中节点的相对位置的邻居位置发现协议（NLDP）。 在一个实施例中，可以为节点配备定向天线并且不能使用GPS的自组织无线网络实现NLDP。 虽然NLDP依赖于具有至少两个RF收发器的节点，但是与先前提出的仅使用一个RF收发器的协议相比，它提供了显着的优点。 在NLDP天线硬件中，简单易用，易于实现。 此外，NLDP利用主机​​节点在非重叠信道上同时操作的能力，以快速收敛在邻居的位置。 NLDP受限于以全向方式运行的控制通道的范围。 然而，通过选择低频带，高功率和低数据速率，可以增加控制信道的范围以匹配数据信道上的范围。

公开(公告)号：US20060142035A1

公开(公告)日：2006-06-29

申请号：US11345907

申请日：2006-02-02

申请人： Paramvir Bahl ,  Atul Adya ,  Jitendra Padhye

发明人： Paramvir Bahl ,  Atul Adya ,  Jitendra Padhye

IPC分类号： H04B7/00

CPC分类号： H04W52/0216 ,  H04W52/0219 ,  H04W52/0241 ,  H04W52/46 ,  H04W72/14 ,  H04W84/12 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/1226 ,  Y02D70/142

摘要： A method and system for optimizing channel access scheduling for multiple wireless computing devices over a wireless network improves channel access efficiency with respect to a primary channel. An access point, or host computer, includes a host transceiver for receiving control information from the wireless computing devices over a low power channel. Upon receiving the control information, the access point applies a scheduling algorithm to schedule channel access for the wireless computing devices to transmit data over the primary communication channel. The wireless computing devices include a low power radio for receiving scheduling information via the low power channel during idle periods. When the scheduling information is received, the wireless computing device activates its primary channel network interface components to communicate data through the primary channel. When the computing device is idle, the device is configured to power down all of its components with the exception of the circuitry required to power the low power channel. As such, the low power channel is maintained in an active state for receiving scheduling information, such as an access schedule, during both idle and non-idle periods.