公开(公告)号：US20110116381A1

公开(公告)日：2011-05-19

申请号：US13003040

申请日：2008-07-09

申请人： Pekka Nikander ,  Mikko Sarela

发明人： Pekka Nikander ,  Mikko Sarela

IPC分类号： H04L12/26

CPC分类号： H04L63/08 ,  H04L12/1868 ,  H04L63/1458 ,  H04L67/2819

摘要： A method of controlling traffic flow through a service node located within a packet network, which traffic flow originates at a plurality of sending nodes and is destined for a receiving node. The service node is one of a multiplicity of service nodes configured in a tree or other acyclic structure, e.g. of an overlay network. The method comprises receiving a challenge from said receiving node or a downstream service node, generating and caching a further challenge, and combining that further challenge with the received challenges to generate a modified challenge. The modified challenge is then sent to a sending node or to an upstream service node. Subsequently, a request is received, destined for said receiving node and originating at a sending node. A solution accompanying said request is validated using the cached further challenge, and the request forwarded towards said receiving node only if the solution is valid. Otherwise, the request is dropped.

摘要翻译： 控制通过位于分组网络内的服务节点的业务流的方法，所述业务流在多个发送节点发起并且发往接收节点。 服务节点是以树或其他非循环结构配置的多个服务节点之一，例如， 的覆盖网络。 所述方法包括从所述接收节点或下游服务节点接收挑战，产生和缓存进一步的挑战，以及将所述进一步的挑战与所接收的挑战结合以产生经修改的挑战。 然后将修改的挑战发送到发送节点或上游服务节点。 随后，接收到发往所述接收节点并发送在发送节点的请求。 伴随所述请求的解决方案使用缓存的进一步的挑战来验证，并且仅当该解决方案有效时才向所述接收节点转发该请求。 否则，请求被删除。

公开(公告)号：US08583919B2

公开(公告)日：2013-11-12

申请号：US13123953

申请日：2008-10-23

申请人： Mikko Sarela ,  Pekka Nikander

发明人： Mikko Sarela ,  Pekka Nikander

IPC分类号： H04L29/06

CPC分类号： H04L12/189 ,  H04L45/16 ,  H04L45/48 ,  H04W40/36

摘要： A method of handling mobility of a sender in a multicast packet sending scenario. The method comprises firstly establishing a multicast tree across a packet data network and transmitting multicast packets from the sender to a plurality of receivers via said multicast tree. Prior to a mobility event in respect of said sender, a suitable transfer anchor node is identified within said network, and the tree re-rooted to that transfer anchor node. Subsequently, multicast packets are transmitted from said sender to said transfer anchor node and injected into the multicast tree at said transfer anchor node. Following said mobility event, said sender continues to send multicast packets to said transfer anchor node for injection into the multicast tree.

摘要翻译： 一种在多播包发送场景中处理发送方的移动性的方法。 该方法包括首先在分组数据网络上建立多播树，并经由所述多播树将多播分组从发送方发送到多个接收机。 在关于所述发送者的移动性事件之前，在所述网络内识别合适的传输锚点节点，并且所述树根据所述传输锚点节点重建。 随后，多播分组从所述发送方发送到所述传输锚点节点，并被注入到所述传输锚点节点的多播树中。 在所述移动性事件之后，所述发送者继续向所述传输锚点节点发送多播分组以便注入到多播树中。

公开(公告)号：US08547848B2

公开(公告)日：2013-10-01

申请号：US13003040

申请日：2008-07-09

申请人： Pekka Nikander ,  Mikko Sarela

发明人： Pekka Nikander ,  Mikko Sarela

IPC分类号： H04L12/26 ,  H04L9/00 ,  H04L9/32 ,  H04M1/66

CPC分类号： H04L63/08 ,  H04L12/1868 ,  H04L63/1458 ,  H04L67/2819

摘要： A method of controlling traffic flow through a service node located within a packet network, which traffic flow originates at a plurality of sending nodes and is destined for a receiving node. The service node is one of a multiplicity of service nodes configured in a tree or other acyclic structure, e.g. of an overlay network. The method comprises receiving a challenge from said receiving node or a downstream service node, generating and caching a further challenge, and combining that further challenge with the received challenges to generate a modified challenge. The modified challenge is then sent to a sending node or to an upstream service node. Subsequently, a request is received, destined for said receiving node and originating at a sending node. A solution accompanying said request is validated using the cached further challenge, and the request forwarded towards said receiving node only if the solution is valid. Otherwise, the request is dropped.

摘要翻译： 控制通过位于分组网络内的服务节点的业务流的方法，所述业务流在多个发送节点发起并且发往接收节点。 服务节点是以树或其他非循环结构配置的多个服务节点之一，例如， 的覆盖网络。 所述方法包括从所述接收节点或下游服务节点接收挑战，产生和缓存进一步的挑战，以及将所述进一步的挑战与所接收的挑战结合以产生经修改的挑战。 然后将修改的挑战发送到发送节点或上游服务节点。 随后，接收到发往所述接收节点并发送在发送节点的请求。 伴随所述请求的解决方案使用缓存的进一步的挑战来验证，并且仅当该解决方案有效时才向所述接收节点转发该请求。 否则，请求被删除。

公开(公告)号：US20110202761A1

公开(公告)日：2011-08-18

申请号：US13123953

申请日：2008-10-23

申请人： Mikko Sarela ,  Pekka Nikander

发明人： Mikko Sarela ,  Pekka Nikander

IPC分类号： H04W12/06 ,  H04W4/06 ,  H04W36/18

CPC分类号： H04L12/189 ,  H04L45/16 ,  H04L45/48 ,  H04W40/36

摘要： A method of handling mobility of a sender in a multicast packet sending scenario. The method comprises firstly establishing a multicast tree across a packet data network and transmitting multicast packets from the sender to a plurality of receivers via said multicast tree. Prior to a mobility event in respect of said sender, a suitable transfer anchor node is identified within said network, and the tree re-rooted to that transfer anchor node. Subsequently, multicast packets are transmitted from said sender to said transfer anchor node and injected into the multicast tree at said transfer anchor node. Following said mobility event, said sender continues to send multicast packets to said transfer anchor node for injection into the multicast tree.

摘要翻译： 一种在多播包发送场景中处理发送方的移动性的方法。 该方法包括首先在分组数据网络上建立多播树，并经由所述多播树将多播分组从发送方发送到多个接收机。 在关于所述发送者的移动性事件之前，在所述网络内识别合适的传输锚点节点，并且所述树根据所述传输锚点节点重建。 随后，多播分组从所述发送方发送到所述传输锚点节点，并被注入到所述传输锚点节点的多播树中。 在所述移动性事件之后，所述发送者继续向所述传输锚点节点发送多播分组以便注入到多播树中。