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：US20060187878A1

公开(公告)日：2006-08-24

申请号：US11182239

申请日：2005-07-15

申请人： Patrice Calhoun ,  Joshua Broch ,  Robert O'Hara

发明人： Patrice Calhoun ,  Joshua Broch ,  Robert O'Hara

IPC分类号： H04Q7/00

CPC分类号： H04W36/0033 ,  H04W84/12 ,  H04W92/20

摘要： Methods, apparatuses, and systems directed to facilitating roaming and client handoffs in wireless networks. In one implementation, the present invention is directed to a coordination mechanism facilitating handoffs of wireless clients in a wireless network infrastructure. In one implementation, the coordination mechanism minimizes the use of group- or multi-casting to provide a scalable wireless network roaming infrastructure.

公开(公告)号：US08675601B2

公开(公告)日：2014-03-18

申请号：US12781120

申请日：2010-05-17

申请人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Ranganatha Marathe ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sreenivasulu Mondem

发明人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Ranganatha Marathe ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sreenivasulu Mondem

IPC分类号： H04W4/00

CPC分类号： H04W76/12 ,  H04W36/0016 ,  H04W36/10

摘要： Techniques are provided to enable a support for guest access of devices in a network. At a controller apparatus in a first mobility sub-domain of a network comprising a plurality of mobility sub-domains, a request message containing a request for guest network access for a device is received from a first access switch in the first mobility sub-domain. The controller apparatus forwards the request message to a guest controller. At a tunneling endpoint apparatus in the first mobility sub-domain, a tunnel is established to the guest controller to carry traffic between the device and the guest controller. Traffic for the device passes in a tunnel between the first access switch and the tunneling endpoint apparatus in the first mobility sub-domain, through the tunneling endpoint apparatus in the first mobility sub-domain and in the tunnel between the routing apparatus in the first mobility sub-domain and the guest controller.

摘要翻译： 提供技术以支持对网络中设备的访客访问。 在包括多个移动性子域的网络的第一移动性子域中的控制器装置处，从第一移动性子域中的第一接入交换机接收到包含用于设备的访客网络接入请求的请求消息 。 控制器装置将请求消息转发给客人控制器。 在第一移动子域中的隧道终端设备处，建立到客户控制器的隧道，以在设备和客户控制器之间携带业务。 该设备的业务通过第一移动性子域中的第一接入交换机和隧道终端设备之间的隧道，通过第一移动性子域中的隧道终端设备和第一移动性子域中的路由设备之间的隧道 子域和访客控制器。

公开(公告)号：US20110280213A1

公开(公告)日：2011-11-17

申请号：US12781120

申请日：2010-05-17

申请人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Ranganatha Marathe ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sreenivasulu Mondem

发明人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Ranganatha Marathe ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sreenivasulu Mondem

IPC分类号： H04W36/10 ,  H04W72/04

CPC分类号： H04W76/12 ,  H04W36/0016 ,  H04W36/10

摘要： Techniques are provided to enable a support for guest access of devices in a network. At a controller apparatus in a first mobility sub-domain of a network comprising a plurality of mobility sub-domains, a request message containing a request for guest network access for a device is received from a first access switch in the first mobility sub-domain. The controller apparatus forwards the request message to a guest controller. At a tunneling endpoint apparatus in the first mobility sub-domain, a tunnel is established to the guest controller to carry traffic between the device and the guest controller. Traffic for the device passes in a tunnel between the first access switch and the tunneling endpoint apparatus in the first mobility sub-domain, through the tunneling endpoint apparatus in the first mobility sub-domain and in the tunnel between the routing apparatus in the first mobility sub-domain and the guest controller.

摘要翻译： 提供技术以支持对网络中设备的访客访问。 在包括多个移动性子域的网络的第一移动性子域中的控制器装置处，从第一移动性子域中的第一接入交换机接收到包含用于设备的访客网络接入请求的请求消息 。 控制器装置将请求消息转发给客人控制器。 在第一移动子域中的隧道终端设备处，建立到客户控制器的隧道，以在设备和客户控制器之间携带业务。 该设备的业务通过第一移动性子域中的第一接入交换机和隧道终端设备之间的隧道，通过第一移动性子域中的隧道终端设备和第一移动性子域中的路由设备之间的隧道 子域和访客控制器。

公开(公告)号：US20110274037A1

公开(公告)日：2011-11-10

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： H04W40/00

CPC分类号： H04W8/085 ,  H04W8/26

摘要： A system and method are provided for a hierarchical distributed control architecture to support roaming of wireless client devices. A plurality of access switches are provided and configured to serve one or more Internet Protocol (IP) subnets that comprises a plurality of IP addresses. The plurality of access switches are arranged in switch peer groups such that each access switch within a given switch peer group is configured to store information about other access switches in that switch peer group and about locations of wireless client devices that are associated with any wireless access point on any access switch in the switch peer group. The plurality of access switches are further grouped into a corresponding one of a plurality of mobility sub-domains each comprising a plurality of switch peer groups. A plurality of controller devices are provided, each configured to control access switches in a corresponding mobility sub-domain. Each controller device stores information about the plurality of access switches within its mobility sub-domain and about locations of wireless client devices at access switches in its mobility sub-domain. A central controller device is provided and configured to communicate with the plurality of controller devices for the respective mobility sub-domains. The central controller device is configured to store information about locations of wireless client devices in the mobility sub-domains.

摘要翻译： 提供了一种用于分级分布式控制架构以支持无线客户端设备的漫游的系统和方法。 多个接入交换机被提供和配置为服务于包括多个IP地址的一个或多个因特网协议（IP）子网。 多个接入交换机布置在交换对等体组中，使得给定交换机对等体组内的每个接入交换机被配置为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任何无线接入相关联的无线客户端设备的位置 指向交换机对等体组中的任何接入交换机。 多个接入交换机被进一步分组成多个移动性子域中的每个包括多个交换对等体组的对应的一个。 提供了多个控制器设备，每个控制器设备被配置为控制相应的移动性子域中的接入交换机。 每个控制器设备将关于多个接入交换机的信息存储在其移动性子域内以及关于移动性子域中的接入交换机处的无线客户端设备的位置。 中央控制器设备被提供和配置成与用于各个移动性子域的多个控制器设备进行通信。 中央控制器设备被配置为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：US20110274035A1

公开(公告)日：2011-11-10

申请号：US12773355

申请日：2010-05-04

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

发明人： Navindra Yadav ,  Bhanu Gopalasetty ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudir 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，并使得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：US20070218875A1

公开(公告)日：2007-09-20

申请号：US11377151

申请日：2006-03-16

申请人： Patrice Calhoun ,  Nancy Cam-Winget ,  Mark Krischer ,  Robert O'Hara

发明人： Patrice Calhoun ,  Nancy Cam-Winget ,  Mark Krischer ,  Robert O'Hara

IPC分类号： H04M1/66

CPC分类号： H04W12/12 ,  H04L63/126 ,  H04L63/1466 ,  H04L63/1483 ,  H04W8/26 ,  H04W84/12

摘要： Methods, apparatuses and systems directed to detecting address spoofing in wireless networks by, after receiving a wireless management frame, transmitting verification messages to determine whether a given wireless node (e.g., a wireless access point, or wireless client) has legitimately lost its connection state.

摘要翻译： 针对无线网络中的地址欺骗检测的方法，装置和系统，在接收到无线管理帧之后，发送验证消息以确定给定的无线节点（例如，无线接入点或无线客户端）是否合法地失去了其连接状态 。

公开(公告)号：US20110274082A1

公开(公告)日：2011-11-10

申请号：US12773351

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： H04W36/00 ,  H04W40/00

CPC分类号： H04W40/24 ,  H04L45/04 ,  H04L45/42 ,  H04W8/087

摘要： Techniques are provided to enable support of roaming wireless devices in a network such that the wireless devices can keep their Internet Protocol (IP) addresses as they roam across mobility sub-domains. Traffic for a wireless device that roams is tunneled back to the access switch that serves the IP subnet which includes an IP address for the wireless device. Traffic is tunneled back to that access switch for the wireless device when the wireless device roams to another access switch which does not serve the IP subnet for the wireless device in the same mobility sub-domain and when the wireless device roams to a different mobility sub-domain, in which case the traffic is tunneled between tunneling endpoints in the respective mobility sub-domains.

摘要翻译： 提供技术以支持网络中的漫游无线设备，使得无线设备可以在移动子域漫游时保持其互联网协议（IP）地址。 漫游的无线设备的流量被隧道传回给服务于包含无线设备的IP地址的IP子网的接入交换机。 当无线设备漫游到不为同一移动性子域中的无线设备的IP子网服务的另一个接入交换机以及当无线设备漫游到不同的移动性子网时，业务被隧道传送回无线设备的接入交换机 在这种情况下，流量在相应的移动性子域中的隧道端点之间隧道化。