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1. 发明授权

US07409549B1 Methods and apparatus for dynamic home agent assignment in mobile IP 有权
标题翻译：移动IP中动态归属代理分配的方法和装置
公开(公告)号：US07409549B1
公开(公告)日：2008-08-05
申请号：US10015247
申请日：2001-12-11
申请人： Kent K. Leung , Madhavi W. Chandra , Alpesh Patel
发明人： Kent K. Leung , Madhavi W. Chandra , Alpesh Patel
IPC分类号： H04L9/00 , H04K1/00
CPC分类号： H04L9/083 , H04L9/321 , H04L61/203 , H04L63/0892 , H04L2209/80 , H04W12/04 , H04W12/06 , H04W80/04
摘要： Methods and apparatus are disclosed that enable a Home Agent to be dynamically assigned to a mobile node. A Mobility Agent supporting Mobile IP enables a mobile node to be registered with either the Mobility Agent or another “local” Home Agent, by receiving a registration request packet from the Mobile Node indicating that a key to be shared by the Mobile Node and an agent with which the Mobile Node is registering is requested. In addition, the agent with which the Mobile Node is registering (e.g., local Home Agent) may be assigned. For instance, a local Home Agent may be assigned if load balancing among multiple Home Agents is desired. A key to be shared by the Mobile Node and the agent with which the Mobile Node is registering is obtained. The key to be shared by the Mobile Node and the agent with which the Mobile Node is registering is then stored. A registration reply packet is then sent to the mobile node including the key to be shared by the Mobile Node and the agent with which the Mobile Node is registering. The mobile node may then re-register with the agent (e.g., local Home Agent) using the key.
摘要翻译：公开了使归属代理能够动态分配给移动节点的方法和装置。支持移动IP的移动代理通过从移动节点接收到由移动节点和代理共享的密钥的注册请求分组，使移动节点能够与移动性代理或另一“本地”归属代理注册请求移动节点正在注册的。此外，可以分配移动节点正在注册的代理（例如，本地归属代理）。例如，如果需要多个归属代理之间的负载平衡，则可以分配本地归属代理。获得移动节点和移动节点正在注册的代理共享的密钥。然后存储移动节点和移动节点正在注册的代理共享的密钥。然后将注册答复分组发送到移动节点，包括由移动节点和移动节点正在注册的代理共享的密钥。移动节点然后可以使用密钥对代理（例如，本地归属代理）重新注册。

2. 发明授权

US07668174B1 Methods and apparatus for home address management at home agent for NAI based mobile nodes 有权
标题翻译：用于基于NAI的移动节点的归属代理的家庭地址管理的方法和装置
公开(公告)号：US07668174B1
公开(公告)日：2010-02-23
申请号：US10273705
申请日：2002-10-17
申请人： Alpesh Patel , Kent K. Leung , Madhavi W. Chandra
发明人： Alpesh Patel , Kent K. Leung , Madhavi W. Chandra
IPC分类号： H04L12/56
CPC分类号： H04W60/00 , H04L29/06 , H04L29/12273 , H04L29/12311 , H04L61/2053 , H04L61/2084 , H04W8/04 , H04W8/26 , H04W60/04 , H04W60/06 , H04W80/04
摘要： The present invention provides methods and apparatus for managing an IP address assigned to a Mobile Node. In one embodiment, the Mobile Node appends an extension to the registration request that is sent to its Home Agent, which indicates that the Mobile Node requests use of the IP address previously assigned to the Mobile Node for an additional period of time. When the Home Agent receives the registration request, it indicates whether a lease on the IP address previously assigned to the Mobile Node has been granted by the Home Agent for an additional period of time. In another embodiment, the Home Agent sends a first control message to determine whether the Mobile Node continues to use the IP address. The Home Agent then determines whether a second control message has been received in order to ascertain whether the Mobile Node continues to use the IP address previously assigned to the Mobile Node. The present invention is preferably performed when a Mobile Node returns to its home network, thereby enabling the Mobile Node to retain the IP address assigned to it.
摘要翻译：本发明提供了用于管理分配给移动节点的IP地址的方法和装置。在一个实施例中，移动节点将附加到发送到其归属代理的注册请求的扩展，其指示移动节点请求使用先前分配给移动节点的IP地址一段时间。当归属代理接收到注册请求时，它指示先前分配给移动节点的IP地址上的租约是否已由归属代理许可一段时间。在另一个实施例中，归属代理发送第一控制消息以确定移动节点是否继续使用IP地址。归属代理然后确定是否已经接收到第二控制消息以便确定移动节点是否继续使用先前分配给移动节点的IP地址。本发明优选地在移动节点返回到其归属网络时进行，从而使得移动节点能够保留分配给它的IP地址。

3. 发明授权

US07599370B1 Methods and apparatus for optimizing NAT traversal in Mobile IP 有权
标题翻译：用于优化移动IP中NAT穿越的方法和装置
公开(公告)号：US07599370B1
公开(公告)日：2009-10-06
申请号：US10420402
申请日：2003-04-17
申请人： Kent K. Leung , Alpesh Patel , Milind M. Kulkarni , Madhavi W. Chandra
发明人： Kent K. Leung , Alpesh Patel , Milind M. Kulkarni , Madhavi W. Chandra
IPC分类号： H04L12/56
CPC分类号： H04L29/12471 , H04L61/2553 , H04W60/00 , H04W80/04
摘要： Methods and apparatus for optimizing NAT traversal in Mobile IP are disclosed. Various mechanisms may performed independently or in combination with one another. A first mechanism enables one-way keep alive messaging to the Home Agent, while a second mechanism enables two-way keep alive messaging to the Home Agent, thereby enabling an entry in a NAT translation table to be maintained. The two-way keep alive messaging requires that the Home Agent send an acknowledgement message, while the one-way keep alive messaging does not. Keep alive messaging may be performed at the Mobile Node or the Foreign Agent. A third mechanism enables a Foreign Agent to encapsulate a registration request packet with the Foreign Agent care-of address in the source IP address field rather than an egress interface of the Foreign Agent. A fourth mechanism enables a Mobile Node to force a Home Agent to perform UDP tunneling.
摘要翻译：公开了用于优化移动IP中NAT穿越的方法和装置。各种机制可以独立地或彼此组合地执行。第一种机制使得能够向归属代理单向保持活动消息传递，而第二种机制允许向归属代理双向保持活动消息传递，从而使NAT转换表中的条目得以维护。双向保持活着消息传递要求家庭代理发送确认消息，而单向保持活动消息传递不需要。可以在移动节点或外部代理处执行活动消息传递。第三种机制使外部代理能够在源IP地址字段而不是外部代理的出口接口封装具有外部代理转交地址的注册请求分组。第四种机制使移动节点能够强制归属代理执行UDP隧道。

4. 发明授权

US07227863B1 Methods and apparatus for implementing home agent redundancy 有权
标题翻译：实施归属代理冗余的方法和装置
公开(公告)号：US07227863B1
公开(公告)日：2007-06-05
申请号：US10008494
申请日：2001-11-09
申请人： Kent K. Leung , Madhavi W. Chandra
发明人： Kent K. Leung , Madhavi W. Chandra
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04W8/12 , H04L69/40 , H04W8/30 , H04W80/04
摘要： Methods and apparatus for maintaining Mobile IP operation in a Home Agent are disclosed. In a Home Agent, a Mobile Node is registered and a registration entry is created in a mobility binding table for the Mobile Node. A multicast message is then sent to a virtual router group to which the Home Agent belongs and with which the Home Agent shares a virtual IP address. The multicast message notifies the virtual router group of the registration. A similar process may be performed when a Mobile Node is de-registered. When an active or non-active Home Agent is initialized, it sends a multicast mobility binding table request to the redundancy group indicating that bindings are requested. The Home Agent may then receive bindings in response to the request and update its mobility binding table with the received bindings.
摘要翻译：公开了在本地代理中维护移动IP操作的方法和装置。在归属代理中，移动节点被注册，并且在用于移动节点的移动性绑定表中创建注册条目。然后，多播消息被发送到归属代理所属的虚拟路由器组，并且归属代理共享虚拟IP地址。多播消息通知虚拟路由器组注册。当移动节点被注销时，可以执行类似的过程。当主动或非活动归属代理被初始化时，它向冗余组发送指示绑定被请求的多播移动性绑定表请求。然后，归属代理可以响应于该请求而接收绑定，并且利用所接收的绑定来更新其移动性绑定表。

5. 发明授权

US07298707B2 System and method for controlling the flooding of information in a network environment 有权
标题翻译：控制网络环境中信息泛滥的系统和方法
公开(公告)号：US07298707B2
公开(公告)日：2007-11-20
申请号：US10762856
申请日：2004-01-21
申请人： Alvaro E. Retana , David A. Cook , Russell I. White , Yi Yang , Madhavi W. Chandra
发明人： Alvaro E. Retana , David A. Cook , Russell I. White , Yi Yang , Madhavi W. Chandra
IPC分类号： G01R31/08
CPC分类号： H04L45/28 , H04L45/02 , H04L45/021 , H04L45/028 , H04L45/32
摘要： An apparatus for communicating packets in a network environment is provided that includes a first network element that includes a first neighbor list, the first network element being coupled to a second network element and a third network element. The first network element is operable to receive a second neighbor list from the second network element and a third neighbor list from the third network element. The first network element is further operable to determine one or more overlaps provided by the second and third neighbor lists when compared to the first neighbor list, the first network element relaying an update that it receives based on the one or more overlaps.
摘要翻译：提供了一种用于在网络环境中传送分组的装置，其包括包括第一邻居列表的第一网络元件，所述第一网络元件耦合到第二网络元件和第三网络元件。第一网络元件可操作以从第二网络元件接收第二邻居列表，并从第三网络元件接收第三邻居列表。当与第一邻居列表相比较时，第一网络元件还可操作以确定由第二和第三邻居列表提供的一个或多个重叠，第一网络元件基于一个或多个重叠中继其接收的更新。

6. 发明授权

US07821956B2 System and method for controlling the flooding of information in a network environment 有权
标题翻译：控制网络环境中信息泛滥的系统和方法
公开(公告)号：US07821956B2
公开(公告)日：2010-10-26
申请号：US11877104
申请日：2007-10-23
申请人： Alvaro E. Retana , David A. Cook , Russell I. White , Yi Yang , Madhavi W. Chandra
发明人： Alvaro E. Retana , David A. Cook , Russell I. White , Yi Yang , Madhavi W. Chandra
IPC分类号： H04J1/00
CPC分类号： H04L45/28 , H04L45/02 , H04L45/021 , H04L45/028 , H04L45/32
摘要： An apparatus for communicating packets in a network environment is provided that includes a first network element that includes a first neighbor list, the first network element being coupled to a second network element and a third network element. The first network element is operable to receive a second neighbor list from the second network element and a third neighbor list from the third network element. The first network element is further operable to determine one or more overlaps provided by the second and third neighbor lists when compared to the first neighbor list, the first network element relaying an update that it receives based on the one or more overlaps.
摘要翻译：提供了一种用于在网络环境中传送分组的装置，其包括包括第一邻居列表的第一网络元件，所述第一网络元件耦合到第二网络元件和第三网络元件。第一网络元件可操作以从第二网络元件接收第二邻居列表，并从第三网络元件接收第三邻居列表。当与第一邻居列表相比较时，第一网络元件还可操作以确定由第二和第三邻居列表提供的一个或多个重叠，第一网络元件基于一个或多个重叠中继其接收的更新。

7. 发明授权

US08098589B2 System and method for exchanging awareness information in a network environment 有权
标题翻译：在网络环境中交换意识信息的系统和方法
公开(公告)号：US08098589B2
公开(公告)日：2012-01-17
申请号：US11963003
申请日：2007-12-21
申请人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
发明人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
IPC分类号： H04L12/28
CPC分类号： H04L45/02 , H04L45/26 , H04W40/248
摘要： A method for communicating packets in a network environment is provided that includes receiving a packet at a network element and identifying a sequence number included in the packet that correlates to awareness information associated with one or more adjacent network elements. A table included in the network element may be updated in order to account for the awareness information included within the packet that has not been accounted for by the network element. In cases where the awareness information included in the packet has already been accounted for, the packet may be ignored.
摘要翻译：提供了一种用于在网络环境中传送分组的方法，包括在网络元件处接收分组，并且识别与包含在与一个或多个相邻网络元素相关联的识别信息相关联的分组中的序列号。可以更新包括在网络元件中的表，以便考虑包含在网络元件尚未被考虑的分组内的识别信息。在分组中包含的识别信息已经被考虑的情况下，分组可以被忽略。

8. 发明授权

US07391730B1 System and method for synchronizing link state databases in a network environment 有权
标题翻译：在网络环境中同步链路状态数据库的系统和方法
公开(公告)号：US07391730B1
公开(公告)日：2008-06-24
申请号：US10895719
申请日：2004-07-21
申请人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
发明人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
IPC分类号： G01R31/08 , H04J3/06
CPC分类号： H04L45/021 , G06F17/30575
摘要： A method for communicating packets in a network environment is provided that includes communicating, by a first network element, a first summary update to a second network element. The method further includes receiving a second summary update from the second network element. The exchange of the first and second summary updates achieves adjacency between the first and second network elements. The first and second summary updates include, at least, locally generated state information and a single link state.
摘要翻译：提供了一种用于在网络环境中传送分组的方法，其包括由第一网络单元向第二网络单元进行第一摘要更新。该方法还包括从第二网络元件接收第二摘要更新。第一和第二简要更新的交换实现了第一和第二网络元件之间的邻接。第一和第二简要更新至少包括本地生成的状态信息和单个链接状态。

9. 发明授权

US07363387B1 System and method for reducing information being transmitted in a network environment 有权
标题翻译：用于减少在网络环境中传输的信息的系统和方法
公开(公告)号：US07363387B1
公开(公告)日：2008-04-22
申请号：US10733039
申请日：2003-12-09
申请人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
发明人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
IPC分类号： G06F15/173
CPC分类号： H04L12/66
摘要： A method for reducing information being transmitted in a network is provided that includes gleaning routing information being communicated by a first network element, the routing information being stored such that the routing information may be accessed. An adjacency protocol may be executed between the first network element and a second network element that allows for a data exchange between the first and second network elements. The first network element does not communicate the routing information gleaned by the second network element during the data exchange associated with the adjacency protocol.
摘要翻译：提供了一种用于减少在网络中传输的信息的方法，其包括由第一网络元件传送的清除路由信息，所述路由信息被存储以使得路由信息可被访问。可以在第一网络元件和允许第一和第二网络元件之间的数据交换的第二网络元件之间执行相邻协议。在与邻接协议相关联的数据交换期间，第一网元不传送由第二网元收集的路由信息。

10. 发明授权

US07319674B2 System and method for exchanging awareness information in a network environment 有权
标题翻译：在网络环境中交换意识信息的系统和方法
公开(公告)号：US07319674B2
公开(公告)日：2008-01-15
申请号：US10625994
申请日：2003-07-24
申请人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
发明人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
IPC分类号： H04L12/28
CPC分类号： H04L45/02 , H04L45/26 , H04W40/248
摘要： A method for communicating packets in a network environment is provided that includes receiving a packet at a network element and identifying a sequence number included in the packet that correlates to awareness information associated with one or more adjacent network elements. A table included in the network element may be updated in order to account for the awareness information included within the packet that has not been accounted for by the network element. In cases where the awareness information included in the packet has already been accounted for, the packet may be ignored.
摘要翻译：提供了一种用于在网络环境中传送分组的方法，包括在网络元件处接收分组，并且识别与包含在与一个或多个相邻网络元素相关联的识别信息相关联的分组中的序列号。可以更新包括在网络元件中的表，以便考虑包含在网络元件尚未被考虑的分组内的识别信息。在分组中包含的识别信息已经被考虑的情况下，分组可以被忽略。

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