公开(公告)号：US09094223B2

公开(公告)日：2015-07-28

申请号：US14524345

申请日：2014-10-27

Applicant: Cisco Technology, Inc.

Inventor： Hui Liu ,  Douglas Chan ,  Tak Ming Pang

IPC: H04W4/00 ,  H04L12/18 ,  H04W80/04 ,  H04W36/18 ,  H04W36/02 ,  H04W76/00 ,  H04W12/06 ,  H04W48/20 ,  H04W72/00 ,  H04W84/12 ,  H04W88/08 ,  H04W12/02

CPC classification number: H04L12/185 ,  H04W12/02 ,  H04W12/06 ,  H04W36/026 ,  H04W36/18 ,  H04W48/20 ,  H04W72/005 ,  H04W80/04 ,  H04W84/12 ,  H04W88/08

Abstract: Techniques are provided for delivering data to a wireless client device in a wireless network via a plurality of access points as the wireless client device roams from one access point to another. A wireless client device receives data via a first wireless access point in the wireless network. An impending roam of a wireless client device is detected. A set of one or more candidate wireless access points other than the first wireless access point is determined to which the wireless client device may potentially roam. The one or more wireless access points in the set are assigned to a multicast group, and the traffic is sent to the multicast group. A message containing a synchronized context enables a new wireless access point to send data to the wireless client device from a point where the first wireless access point stopped sending data to the wireless client device.

Abstract translation: 提供了技术，用于当无线客户端设备从一个接入点漫游到另一接入点时经由多个接入点将数据传送到无线网络中的无线客户端设备。 无线客户端设备经由无线网络中的第一无线接入点接收数据。 检测到无线客户端设备即将发生的漫游。 确定除了第一无线接入点之外的一个或多个候选无线接入点的集合，无线客户端设备可能潜在地漫游到该无线接入点。 集合中的一个或多个无线接入点被分配给组播组，并且业务被发送到组播组。 包含同步上下文的消息使得新的无线接入点能够从第一无线接入点停止向无线客户端设备发送数据的点向无线客户端设备发送数据。

公开(公告)号：US20150156815A1

公开(公告)日：2015-06-04

申请号：US14095406

申请日：2013-12-03

Applicant: Cisco Technology, Inc.

Inventor： Tak Ming Pang ,  Robert C. Meier ,  Yanxin Na ,  Emburey Samrex Edward

IPC: H04W84/12

CPC classification number: H04L45/28 ,  H04L45/122 ,  H04L45/48 ,  H04W40/24 ,  H04W84/12

Abstract: A wireless mesh network includes mesh APs and a root AP forming a root of a tree of the mesh APs in which the mesh APs are linked back to the root AP over wireless backhaul links. The root AP has a wired connection to a wired network. An AP detects a loss of connectivity to a controller through which traffic associated with the AP is normally routed to and from the wired network. In response, if the AP is the root AP, the root AP operates as a proxy controller through which the traffic may be routed. The AP maintains connectivity with parent and child APs over the wireless backhaul links.

Abstract translation: 无线网状网络包括网状AP和根AP，其形成网状AP的树的根，其中网状AP通过无线回程链路链接回根AP。 根AP具有到有线网络的有线连接。 AP检测到与控制器的连接性的丢失，通过该控制器，与AP相关联的流量通常路由到有线网络并从有线网络路由。 作为响应，如果AP是根AP，则根AP作为代理控制器操作，通过该代理控制器可以路由流量。 AP通过无线回程链路保持与父和子AP的连接。

公开(公告)号：US08934369B2

公开(公告)日：2015-01-13

申请号：US13645576

申请日：2012-10-05

Applicant: Cisco Technology, Inc.

Inventor： Min Cao ,  Tak Ming Pang ,  Hari Rangarajan ,  Allan Thomson ,  Hang Jin

IPC: H04W36/08

CPC classification number: H04W36/0083 ,  H04W36/32

Abstract: The direction of movement of a wireless local area network client device, determined based on data generated by one or more sensors onboard the client device, is provided by the client device to its serving access point. Using the direction of movement information, a list is generated of neighbor access points that are likely to be in the path of travel of the client device. The list may be generated by the serving access point or another infrastructure device, e.g., a wireless network controller. The serving access point sends the list of neighbor access points to the client device to enable the client device to select an access point to roam to at the appropriate time.

Abstract translation: 根据客户端设备上的一个或多个传感器生成的数据确定的无线局域网客户端设备的移动方向由客户端设备提供给其服务接入点。 使用移动信息的方向，生成可能在客户端设备的行进路径中的邻居接入点的列表。 该列表可以由服务接入点或另一个基础设施设备（例如，无线网络控制器）生成。 服务接入点将邻居接入点列表发送到客户端设备，以使得客户端设备能够在适当的时间选择一个接入点漫游。

公开(公告)号：US08897261B2

公开(公告)日：2014-11-25

申请号：US13626983

申请日：2012-09-26

Applicant: Cisco Technology, Inc.

Inventor： Hui Liu ,  Douglas Chan ,  Tak Ming Pang

IPC: H04W4/00 ,  H04W36/18 ,  H04W80/04

CPC classification number: H04L12/185 ,  H04W12/02 ,  H04W12/06 ,  H04W36/026 ,  H04W36/18 ,  H04W48/20 ,  H04W72/005 ,  H04W80/04 ,  H04W84/12 ,  H04W88/08

Abstract: Techniques are provided for delivering data to a wireless client device in a wireless local area network via a plurality of access point devices as the wireless client device roams from one access point device to another. A wireless client device receives data communications (i.e., traffic) via a first wireless access point device in the wireless local area network. An impending roam of a wireless client device is detected. A set of one or more candidate wireless access point devices other than the first wireless access point device is determined to which the wireless client device may potentially roam. The one or more wireless access point devices in the set are assigned to a multicast group, and the traffic is sent to the multicast group.

Abstract translation: 提供了技术，用于当无线客户端设备从一个接入点设备漫游到另一个接入点设备时，经由多个接入点设备将数据传送到无线局域网中的无线客户端设备。 无线客户端设备经由无线局域网中的第一无线接入点设备接收数据通信（即业务）。 检测到无线客户端设备即将发生的漫游。 确定除了第一无线接入点设备之外的一个或多个候选无线接入点设备的集合，无线客户端设备可能潜在地漫游到该无线接入点设备。 集合中的一个或多个无线接入点设备被分配给多播组，并且业务被发送到多播组。

公开(公告)号：US20140098682A1

公开(公告)日：2014-04-10

申请号：US13645576

申请日：2012-10-05

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Min Cao ,  Tak Ming Pang ,  Hari Rangarajan ,  Allan Thomson ,  Hang Jin

IPC: H04W36/08 ,  H04W24/00

CPC classification number: H04W36/0083 ,  H04W36/32

Abstract: The direction of movement of a wireless local area network client device, determined based on data generated by one or more sensors onboard the client device, is provided by the client device to its serving access point. Using the direction of movement information, a list is generated of neighbor access points that are likely to be in the path of travel of the client device. The list may be generated by the serving access point or another infrastructure device, e.g., a wireless network controller. The serving access point sends the list of neighbor access points to the client device to enable the client device to select an access point to roam to at the appropriate time.

Abstract translation: 根据客户端设备上的一个或多个传感器生成的数据确定的无线局域网客户端设备的移动方向由客户端设备提供给其服务接入点。 使用移动信息的方向，生成可能在客户端设备的行进路径中的邻居接入点的列表。 该列表可以由服务接入点或另一个基础设施设备（例如，无线网络控制器）生成。 服务接入点将邻居接入点列表发送到客户端设备，以使得客户端设备能够在适当的时间选择一个接入点漫游。