公开(公告)号：US08520595B2

公开(公告)日：2013-08-27

申请号：US12773355

申请日：2010-05-04

申请人： Navindra Yadav ,  Bhanu Gopalasetty ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Fusun Ertemalp ,  Kent Leung

发明人： Navindra Yadav ,  Bhanu Gopalasetty ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Fusun Ertemalp ,  Kent Leung

IPC分类号： H04W40/00

CPC分类号： H04W40/24 ,  H04L45/04 ,  H04L45/42

摘要： Techniques are provided for seamless integration of wired and wireless functionality packet forwarding in network. A plurality of access switches are provided in each of a plurality of mobility sub-domains that are part of a mobility domain of a network. Each access switch serves one or more Internet Protocol (IP) subnets, each comprising a plurality of IP addresses. An access switch obtains an IP address for a wireless device according to the one or more IP subnets that the access switch serves. The access switch sends an association advertisement message to indicate the IP address of the wireless device and to enable other access switches and routers to compute a path to the wireless device. When a wireless device obtains an IP address, it can keep the same IP address as it roams in the mobility domain.

摘要翻译： 为网络中有线和无线功能数据包转发的无缝集成提供了技术。 在作为网络的移动性域的一部分的多个移动性子域中的每一个中提供多个接入交换机。 每个接入交换机提供一个或多个互联网协议（IP）子网，每个网络包括多个IP地址。 接入交换机根据接入交换机所服务的一个或多个IP子网获取无线设备的IP地址。 接入交换机发送关联广告消息以指示无线设备的IP地址，并使其他接入交换机和路由器能够计算到无线设备的路径。 当无线设备获得IP地址时，它可以保持与移动域中漫游相同的IP地址。

公开(公告)号：US08441983B2

公开(公告)日：2013-05-14

申请号：US12773360

申请日：2010-05-04

申请人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Fusun Ertemalp ,  Kent Leung

发明人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Fusun Ertemalp ,  Kent Leung

IPC分类号： H04W40/00

CPC分类号： H04W40/24 ,  H04L45/04 ,  H04L45/42

摘要： Techniques are provided to support roaming of wireless devices in a network such that the wireless devices can keep their Internet Protocol (IP) addresses as they roam within and across mobility sub-domains. When a wireless device roams from one access switch to another access switch, a tunneling endpoint apparatus in the wireless device's home mobility sub-domain is configured to serve as the point of presence for the roamed wireless device. Traffic for the roamed wireless device is tunneled from the access switch where the wireless device has roamed (where it is currently attached) to the tunneling endpoint apparatus. When the wireless device roams across mobility sub-domains, then traffic is tunneled from the access switch where the wireless device is currently attached to the tunneling endpoint apparatus in that mobility sub-domain (called a “foreign” mobility sub-domain) to the tunneling endpoint apparatus in the wireless device's home mobility sub-domain.

摘要翻译： 提供技术以支持网络中的无线设备的漫游，使得无线设备可以在移动性子域内漫游时保持其互联网协议（IP）地址。 当无线设备从一个接入交换机漫游到另一个接入交换机时，无线设备的归属移动性子域中的隧道端点设备被配置为用作漫游无线设备的存在点。 漫游无线设备的业务从无线设备已经漫游（其当前附接的）的接入交换机隧道传送到隧道终端设备。 当无线设备漫游跨越移动性子域时，则将业务从无线设备当前附接到的接入交换机隧道传送到该移动性子域（称为“外部”移动性子域）的隧道端点设备， 隧道终端设备在无线设备的归属移动性子域中。

公开(公告)号：US08428006B2

公开(公告)日：2013-04-23

申请号：US12823227

申请日：2010-06-25

申请人： Sudhir Jain ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Ly Loi ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Fusun Ertemalp

发明人： Sudhir Jain ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Ly Loi ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Fusun Ertemalp

IPC分类号： H04W4/00

CPC分类号： H04W8/085 ,  H04W8/26

摘要： A system and method for a hierarchical distributed control architecture to support roaming wireless client devices. Access switches serve one or more Internet Protocol (IP) subnets that include plural IP addresses. The access switches are arranged in switch peer groups and store information about other access switches in that switch peer group and about locations of wireless client devices that are associated with any access switch in the switch peer group. The access switches are further grouped into a corresponding mobility sub-domain each including plural switch peer groups. Plural controller devices control access switches in a corresponding mobility sub-domain. Each controller device stores information about the access switches and about locations of wireless client devices within its mobility sub-domain. A central controller device communicates with the controller devices for the respective mobility sub-domains. The central controller device stores information about locations of wireless client devices in the mobility sub-domains.

摘要翻译： 一种用于支持漫游无线客户端设备的分层分布式控制架构的系统和方法。 接入交换机提供包含多个IP地址的一个或多个因特网协议（IP）子网。 接入交换机被安排在交换机对等体组中，并且存储关于该交换机对等体组中的其他接入交换机的信息以及与交换机对等体组中的任何接入交换机相关联的无线客户端设备的位置。 接入交换机被进一步分组成每个包括多个交换对等体组的对应的移动性子域。 多个控制器设备控制相应移动性子域中的接入交换机。 每个控制器设备存储有关接入交换机的信息以及无线客户端设备在其移动性子域内的位置。 中央控制器设备与各个移动性子域的控制器设备进行通信。 中央控制器设备存储关于无线客户端设备在移动性子域中的位置的信息。

公开(公告)号：US20110103344A1

公开(公告)日：2011-05-05

申请号：US12612131

申请日：2009-11-04

申请人： Srinath Gundavelli ,  Abhijit Choudhury ,  Rohit Suri ,  Venkatesh Kanagasabapathy ,  Bhavannarayana Nelakanti ,  Sudhir Jain

发明人： Srinath Gundavelli ,  Abhijit Choudhury ,  Rohit Suri ,  Venkatesh Kanagasabapathy ,  Bhavannarayana Nelakanti ,  Sudhir Jain

IPC分类号： H04W36/00

CPC分类号： H04W8/005 ,  H04L41/12 ,  H04W8/26

摘要： Techniques are provided herein to support roaming of wireless mobile client devices from one wireless local area network access point device to another wireless local area network access point device. Neighbor discovery messages are received from wireless mobile client devices. A neighbor discovery message specifies a target address for a neighbor discovery function. A response to a neighbor discovery message is sent to a wireless mobile client device such that the response message appears to have been sent by a wireless mobile client device that has an address that corresponds to the target address of the neighbor discovery message.

摘要翻译： 本文提供了技术来支持将无线移动客户端设备从一个无线局域网接入点设备漫游到另一个无线局域网接入点设备。 从无线移动客户端设备接收邻居发现消息。 邻居发现消息指定邻居发现功能的目标地址。 对邻居发现消息的响应被发送到无线移动客户端设备，使得响应消息看起来已被无线移动客户端设备发送，该无线移动客户端设备具有与邻居发现消息的目标地址相对应的地址。

公开(公告)号：US20110022676A1

公开(公告)日：2011-01-27

申请号：US12892974

申请日：2010-09-29

申请人： Allan THOMSON ,  David Stephenson ,  Rohit Suri

发明人： Allan THOMSON ,  David Stephenson ,  Rohit Suri

IPC分类号： G06F15/173

CPC分类号： H04W8/12 ,  H04W8/06 ,  H04W24/04

摘要： Described in an example embodiment herein is a Mobility Service Engine (MSE) cluster comprising an MSE Cluster Master and at least one MSE Cluster Slave. The MSE Master is configured to define Network Service Segments. The MSE Master of the cluster distributes the Network Service Segments to slaves within the cluster. The network is configured to forward data to the correct Network Service Segment.

摘要翻译： 在本文的示例实施例中描述的是包括MSE群集主机和至少一个MSE群集从站的移动性服务引擎（MSE）群集。 MSE Master被配置为定义网络服务段。 群集的MSE主站将网络服务段分配到群集中的从站。 网络配置为将数据转发到正确的网络服务段。

公开(公告)号：US08971289B2

公开(公告)日：2015-03-03

申请号：US13068926

申请日：2011-05-24

申请人： Vipul Shah ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sudhir K. Jain ,  Rohit Suri

发明人： Vipul Shah ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sudhir K. Jain ,  Rohit Suri

IPC分类号： H04W4/00 ,  H04W36/00 ,  H04W36/02

CPC分类号： H04W36/02

摘要： In one embodiment, a method includes receiving a packet from a source wireless device at a second switch, the source wireless device previously associated with a first switch and roamed to and associated with the second switch, wherein a point of presence for the source wireless device is maintained at the first switch, inserting into the packet a direction indicator, and forwarding the packet from the second switch to the first switch, the direction indicator identifying the packet as being transmitted towards the point of presence for the source wireless device to prevent a forwarding loop. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在第二交换机处从源无线设备接收分组，所述源无线设备先前与第一交换机相关联并且漫游到第二交换机并且与第二交换机相关联，其中源无线设备的存在点 保持在第一交换机处，将数据包插入方向指示器，并将分组从第二交换机转发到第一交换机，方向指示符将分组标识为向源无线设备的存在点发送以防止 转发循环。 还公开了一种装置。

公开(公告)号：US08687609B2

公开(公告)日：2014-04-01

申请号：US12612116

申请日：2009-11-04

申请人： Srinath Gundavelli ,  Abhijit Choudhury ,  Rohit Suri ,  Venkatesh Kanagasabapathy ,  Bhavannarayana Nelakanti ,  Sudhir Jain

发明人： Srinath Gundavelli ,  Abhijit Choudhury ,  Rohit Suri ,  Venkatesh Kanagasabapathy ,  Bhavannarayana Nelakanti ,  Sudhir Jain

IPC分类号： H04W4/00

CPC分类号： H04L12/189 ,  H04L12/18 ,  H04L12/4641 ,  H04L45/16 ,  H04W28/0226 ,  H04W40/023 ,  H04W40/24 ,  H04W40/248 ,  H04W40/30 ,  H04W84/12

摘要： Techniques are provided to manage how router advertisement messages are forwarded for ultimate wireless transmission in a wireless network. In one embodiment, a multicast router advertisement message intended for a virtual local area network is converted into individual unicast router advertisement messages directed to specific wireless mobile client devices that are part of that virtual local area network. In another embodiment, router advertisement messages are routed between controllers according to the current location of a wireless mobile client device. In still other embodiments, techniques are provided to minimize the volume of the router advertisement messages sent over a wireless network, and to proactively send a unicast router advertisement message to a mobile client device that has performed a handoff, without waiting for a router solicitation message.

摘要翻译： 提供技术来管理路由器通告消息如何被转发以用于无线网络中的最终无线传输。 在一个实施例中，旨在用于虚拟局域网的多播路由器通告消息被转换成针对作为该虚拟局域网的一部分的特定无线移动客户端设备的单独的单播路由器通告消息。 在另一实施例中，路由器通告消息根据无线移动客户端设备的当前位置在控制器之间路由。 在其他实施例中，提供了技术来最小化通过无线网络发送的路由器通告消息的音量，并且主动地向执行切换的移动客户端设备发送单播路由器通告消息，而不等待路由器请求消息 。

公开(公告)号：US08396956B2

公开(公告)日：2013-03-12

申请号：US12892974

申请日：2010-09-29

申请人： Allan Thomson ,  David Stephenson ,  Rohit Suri

发明人： Allan Thomson ,  David Stephenson ,  Rohit Suri

IPC分类号： G06F15/173

CPC分类号： H04W8/12 ,  H04W8/06 ,  H04W24/04

摘要： Described in an example embodiment herein is a Mobility Service Engine (MSE) cluster comprising an MSE Cluster Master and at least one MSE Cluster Slave. The MSE Master is configured to define Network Service Segments. The MSE Master of the cluster distributes the Network Service Segments to slaves within the cluster. The network is configured to forward data to the correct Network Service Segment.

摘要翻译： 在本文的示例实施例中描述的是包括MSE群集主机和至少一个MSE群集从站的移动性服务引擎（MSE）群集。 MSE Master被配置为定义网络服务段。 群集的MSE主站将网络服务段分配到群集中的从站。 网络配置为将数据转发到正确的网络服务段。

公开(公告)号：US20090190515A1

公开(公告)日：2009-07-30

申请号：US12020331

申请日：2008-01-25

申请人： Norman W. Finn ,  Robert O'Hara ,  Rohit Suri ,  Josh Broch

发明人： Norman W. Finn ,  Robert O'Hara ,  Rohit Suri ,  Josh Broch

IPC分类号： H04H20/71

CPC分类号： H04W72/0446 ,  H04L12/462 ,  H04W4/16 ,  H04W72/0406 ,  H04W72/0426 ,  H04W88/08 ,  H04W92/02

摘要： In one embodiment, a transmitting node may be configured to transmit a wireless advertisement frame over a computer network, wherein the frame includes a source address of a reachable node being advertised, a destination address to which the reachable node is to be advertised, a transmitter address of the transmitting node, and a receiver address of a wireless access point to which the wireless advertisement frame is to be received. Also, the wireless access point may be configured to receive the wireless advertisement frame from the network, and in response, transmit a reflected wireless advertisement frame having the source address of the reachable node, the destination address to which the reachable node is to be advertised, a transmitter address of the access point, and a receiver address that indicates the reflected frame is to be accepted by any appropriate receiver excluding the transmitting node.

摘要翻译： 在一个实施例中，发送节点可以被配置为在计算机网络上发送无线广告帧，其中，该帧包括正在被通告的可到达节点的源地址，可到达节点要被通告的目的地地址，发射机 发送节点的地址，以及将要接收无线广告帧的无线接入点的接收器地址。 此外，无线接入点可以被配置为从网络接收无线广告帧，并且作为响应，发送具有可达节点的源地址的反射的无线广告帧，可到达节点要被通告的目的地地址 ，接入点的发射机地址和指示反射帧的接收机地址将由除发射节点之外的任何适当的接收机接受。

公开(公告)号：US08724583B2

公开(公告)日：2014-05-13

申请号：US12612131

申请日：2009-11-04

申请人： Srinath Gundavelli ,  Abhijit Choudhury ,  Rohit Suri ,  Venkatesh Kanagasabapathy ,  Bhavannarayana Nelakanti ,  Sudhir Jain

发明人： Srinath Gundavelli ,  Abhijit Choudhury ,  Rohit Suri ,  Venkatesh Kanagasabapathy ,  Bhavannarayana Nelakanti ,  Sudhir Jain

IPC分类号： H04W4/00

CPC分类号： H04W8/005 ,  H04L41/12 ,  H04W8/26

摘要： Techniques are provided herein to support roaming of wireless mobile client devices from one wireless local area network access point device to another wireless local area network access point device. Neighbor discovery messages are received from wireless mobile client devices. A neighbor discovery message specifies a target address for a neighbor discovery function. A response to a neighbor discovery message is sent to a wireless mobile client device such that the response message appears to have been sent by a wireless mobile client device that has an address that corresponds to the target address of the neighbor discovery message.

摘要翻译： 本文提供了技术来支持将无线移动客户端设备从一个无线局域网接入点设备漫游到另一个无线局域网接入点设备。 从无线移动客户端设备接收邻居发现消息。 邻居发现消息指定邻居发现功能的目标地址。 对邻居发现消息的响应被发送到无线移动客户端设备，使得响应消息看起来已被无线移动客户端设备发送，该无线移动客户端设备具有与邻居发现消息的目标地址相对应的地址。