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21. 发明授权

US08098627B2 P-CSCF fast handoff for IMS/MMS architecture 有权
标题翻译：用于IMS / MMS架构的P-CSCF快速切换
公开(公告)号：US08098627B2
公开(公告)日：2012-01-17
申请号：US11900450
申请日：2007-09-11
申请人： Ashutosh Dutta , Abhrajit Ghosh , Subir Das , Dana Chee , Kyriakos Manousakis , Funchun Joseph Lin , Shih-wei Li , Tsunehiko Chiba , Hidetoshi Yokota , Akira Idoue
发明人： Ashutosh Dutta , Abhrajit Ghosh , Subir Das , Dana Chee , Kyriakos Manousakis , Funchun Joseph Lin , Shih-wei Li , Tsunehiko Chiba , Hidetoshi Yokota , Akira Idoue
IPC分类号： H04W4/00
CPC分类号： H04W36/0038 , H04L65/1016 , H04L65/1083 , H04W12/06 , H04W36/0016 , H04W80/10
摘要： A mechanism by which handoff delay can be minimized while not compromising the IMS/MMD security and also protecting the media if required by certain applications is presented. One proactive method includes proactive authentication. Another proactive method includes proactive security association, such as transferring SA keys from old proxy to new proxy, or transferring keys through serving signal entities. Reactive methods include transferring SA keys from old proxy to new proxy, using either push or pull technology. Other reactive methods include transferring keys through serving signal entities using either push or pull technology.
摘要翻译：呈现切换延迟最小化的机制，同时不影响IMS / MMD安全性，并且在某些应用需要时还可以保护媒体。一种主动的方法包括主动认证。另一个主动方法包括主动安全关联，例如将SA密钥从旧代理传输到新代理，或通过服务信号实体传送密钥。反向方法包括使用推或拉技术将SA密钥从旧代理传输到新代理。其他无效的方法包括使用推或拉技术来传送服务信号实体的密钥。

22. 发明申请

US20080072310A1 Security optimization for IMS/MMD architecture 有权
标题翻译： IMS / MMD架构的安全优化
公开(公告)号：US20080072310A1
公开(公告)日：2008-03-20
申请号：US11900619
申请日：2007-09-11
申请人： Ashutosh Dutta , Abhrajit Ghosh , Subir Das , Joesph Lin , Kyriakos Manousakis , Dana Chee , Tsunehiko Chiba , Hidetoshi Yokota , Akira Idoue
发明人： Ashutosh Dutta , Abhrajit Ghosh , Subir Das , Joesph Lin , Kyriakos Manousakis , Dana Chee , Tsunehiko Chiba , Hidetoshi Yokota , Akira Idoue
IPC分类号： H04L9/00
CPC分类号： H04W36/0038 , H04L63/0272 , H04L63/164 , H04L65/1016 , H04W12/02 , H04W12/04
摘要： A mechanism by which handoff delay can be minimized while not compromising the IMS/MMD security and also protecting the media if required by certain applications is presented. Methods for mitigating delay during SA re-association and mitigating the IPSec tunnel overhead for signaling and media at the Mobile Node are given. In one embodiment, SA keys can be transferred from the old P-CSCF to new P-CSCF, enabling the establishment of SAs before Mobile Node physically moves to the new subnet in a network. Proactive handover is used. In another embodiment, SA keys are transferred from S-CSCF to new P-CSCF. In this case, the SA keys are transferred to the new P-CSCF by S-CSCF through a context transfer mechanism well in advance so that SAs may be established before Mobile Node physically moves to new subnet. In another embodiment, methods for mitigating IPSec tunnel overhead are presented.
摘要翻译：呈现切换延迟最小化的机制，同时不影响IMS / MMD安全性，并且在某些应用需要时还可以保护媒体。给出了在SA重新关联过程中减轻延迟并减轻移动节点上用于信令和媒体的IPSec隧道开销的方法。在一个实施例中，SA密钥可以从旧的P-CSCF传送到新的P-CSCF，使得能够在移动节点物理移动到网络中的新子网之前建立SA。使用主动切换。在另一实施例中，SA密钥从S-CSCF传送到新的P-CSCF。在这种情况下，SA密钥由S-CSCF通过上下文传送机制预先传送到新的P-CSCF，以便SA可以在移动节点物理移动到新的子网之前被建立。在另一个实施例中，提出了用于减轻IPSec隧道开销的方法。

23. 发明授权

US08971291B2 P-CSCF fast handoff for IMS/MMS architecture 有权
标题翻译：用于IMS / MMS架构的P-CSCF快速切换
公开(公告)号：US08971291B2
公开(公告)日：2015-03-03
申请号：US13323317
申请日：2011-12-12
申请人： Ashutosh Dutta , Abhrajit Ghosh , Subir Das , Dana Chee , Kyriakos Manousakis , Funchun Joseph Lin , Shih-wei Li , Tsunehiko Chiba , Hidetoshi Yokota , Akira Idoue
发明人： Ashutosh Dutta , Abhrajit Ghosh , Subir Das , Dana Chee , Kyriakos Manousakis , Funchun Joseph Lin , Shih-wei Li , Tsunehiko Chiba , Hidetoshi Yokota , Akira Idoue
IPC分类号： H04W4/00
CPC分类号： H04W36/0038 , H04L65/1016 , H04L65/1083 , H04W12/06 , H04W36/0016 , H04W80/10
摘要： A mechanism by which handoff delay can be minimized while not compromising the IMS/MMD security and also protecting the media if required by certain applications is presented. One proactive method includes proactive authentication. Another proactive method includes proactive security association, such as transferring SA keys from old proxy to new proxy, or transferring keys through serving signal entities. Reactive methods include transferring SA keys from old proxy to new proxy, using either push or pull technology. Other reactive methods include transferring keys through serving signal entities using either push or pull technology.
摘要翻译：呈现切换延迟最小化的机制，同时不影响IMS / MMD安全性，并且在某些应用需要时还可以保护媒体。一种主动的方法包括主动认证。另一个主动方法包括主动安全关联，例如将SA密钥从旧代理传输到新代理，或通过服务信号实体传送密钥。反向方法包括使用推或拉技术将SA密钥从旧代理传输到新代理。其他无效的方法包括使用推或拉技术来传送服务信号实体的密钥。

24. 发明授权

US08625551B2 Flexible mobility framework for heterogeneous roaming in next generation wireless networks 有权
标题翻译：灵活的移动性框架，用于下一代无线网络中的异构漫游
公开(公告)号：US08625551B2
公开(公告)日：2014-01-07
申请号：US12004580
申请日：2007-12-21
申请人： Ashutosh Dutta , Subir Das , Fuchun Joe Lin , Dana Chee , Tsumehiko Chiba , Hidetoshi Yokota , Akira Idoue
发明人： Ashutosh Dutta , Subir Das , Fuchun Joe Lin , Dana Chee , Tsumehiko Chiba , Hidetoshi Yokota , Akira Idoue
IPC分类号： H04Q7/20
CPC分类号： H04W12/06 , H04W8/26 , H04W80/10
摘要： A system and method for mobility support of a mobile node having a home network in a heterogeneous roaming environment is presented. The method comprises the steps of authenticating the mobile node in a visited network and obtaining an address for the mobile node in the visited network, establishing a security connection between a functional component in the visited network and an agent in the home network, creating a home address for the mobile node, and using the home address to generate a SIP signaling address, a SIP media address, and a non-SIP media address, such that SIP non-media is transmitted using the security connection to the SIP signaling address, SIP media is transmitted using the security connection to the SIP media address, and non-SIP media is transmitted using the security connection to the non-SIP media address.
摘要翻译：提出了一种在异构漫游环境中具有家庭网络的移动节点的移动性支持的系统和方法。该方法包括以下步骤：对受访网络中的移动节点进行认证，并获得访问网络中的移动节点的地址，建立受访网络中的功能组件与家庭网络中的代理之间的安全连接，移动节点的地址，以及使用家庭地址生成SIP信令地址，SIP媒体地址和非SIP媒体地址，使得使用与SIP信令地址的安全连接来发送SIP非媒体，SIP 使用安全连接将媒体发送到SIP媒体地址，并且使用与非SIP媒体地址的安全连接来发送非SIP媒体。

25. 发明授权

US08341395B2 Media independent handover protocol security 有权
标题翻译：媒体独立切换协议安全
公开(公告)号：US08341395B2
公开(公告)日：2012-12-25
申请号：US12772646
申请日：2010-05-03
申请人： Subir Das , Yoshihiro Oba , Ashutosh Dutta
发明人： Subir Das , Yoshihiro Oba , Ashutosh Dutta
IPC分类号： G06F21/00
CPC分类号： H04L9/0869 , H04L9/0838 , H04L9/321 , H04L9/3273 , H04L63/062 , H04L63/166 , H04L2209/80 , H04W12/06 , H04W12/08 , H04W36/005 , H04W88/16
摘要： An apparatus for providing security to media independent handover service includes a point of service for providing the media independent handover services including an independent authenticator. The independent authenticator authenticates candidate access networks prior to the handover of the mobile devices from serving access networks to the candidate access networks, where each of the serving access networks and the candidate access networks belong to a plurality of heterogeneous access networks having the specific serving media. An access controller applies an access control through an access authentication with the point of service providing the media independent handover services through an authentication server, in which when the access authentication is established between the point of service and the authentication server, the mobile devices are authorized to access the media independent handover services through the point of service for the mobile devices attached between heterogeneous media.
摘要翻译：用于向媒体独立切换服务提供安全性的装置包括用于提供包括独立认证者的媒体独立切换服务的服务点。独立认证器在移动设备从服务接入网络切换到候选接入网络之前对候选接入网络进行认证，其中每个服务接入网络和候选接入网络属于具有特定服务介质的多个异构接入网络。访问控制器通过访问认证与通过认证服务器提供媒体独立的切换服务的服务点应用访问控制，其中当在服务点和认证服务器之间建立访问认证时，授权移动设备通过针对不同媒体之间连接的移动设备的服务点来访问媒体独立的切换服务。

26. 发明申请

US20100281249A1 MEDIA INDEPENDENT HANDOVER PROTOCOL SECURITY 有权
标题翻译：媒体独立切换协议安全
公开(公告)号：US20100281249A1
公开(公告)日：2010-11-04
申请号：US12772646
申请日：2010-05-03
申请人： Subir Das , Yoshihiro Oba , Ashutosh Dutta
发明人： Subir Das , Yoshihiro Oba , Ashutosh Dutta
IPC分类号： H04L29/06 , H04L9/32
CPC分类号： H04L9/0869 , H04L9/0838 , H04L9/321 , H04L9/3273 , H04L63/062 , H04L63/166 , H04L2209/80 , H04W12/06 , H04W12/08 , H04W36/005 , H04W88/16
摘要： An apparatus for providing security to media independent handover service includes a point of service for providing the media independent handover services including an independent authenticator. The independent authenticator authenticates candidate access networks prior to the handover of the mobile devices from serving access networks to the candidate access networks, where each of the serving access networks and the candidate access networks belong to a plurality of heterogeneous access networks having the specific serving media. An access controller applies an access control through an access authentication with the point of service providing the media independent handover services through an authentication server, in which when the access authentication is established between the point of service and the authentication server, the mobile devices are authorized to access the media independent handover services through the point of service for the mobile devices attached between heterogeneous media.
摘要翻译：用于向媒体独立切换服务提供安全性的装置包括用于提供包括独立认证者的媒体独立切换服务的服务点。独立认证者在移动设备从服务接入网络切换到候选接入网络之前认证候选接入网络，其中每个服务接入网络和候选接入网络属于具有特定服务媒体的多个异构接入网络。访问控制器通过访问认证与通过认证服务器提供媒体独立的切换服务的服务点应用访问控制，其中当在服务点和认证服务器之间建立访问认证时，授权移动设备通过针对不同媒体之间连接的移动设备的服务点来访问媒体独立的切换服务。

27. 发明申请

US20080176560A1 Flexible mobility framwork for heterogeneous roaming in next generation wireless networks 有权
标题翻译：灵活的移动性框架，用于下一代无线网络中的异构漫游
公开(公告)号：US20080176560A1
公开(公告)日：2008-07-24
申请号：US12004580
申请日：2007-12-21
申请人： Ashutosh Dutta , Subir Das , Fuchun Joe Lin , Dana Chee , Tsumehiko Chiba , Hidetoshi Yokota , Akira Idoue
发明人： Ashutosh Dutta , Subir Das , Fuchun Joe Lin , Dana Chee , Tsumehiko Chiba , Hidetoshi Yokota , Akira Idoue
IPC分类号： H04Q7/20
CPC分类号： H04W12/06 , H04W8/26 , H04W80/10
摘要： A system and method for mobility support of a mobile node having a home network in a heterogeneous roaming environment is presented. The method comprises the steps of authenticating the mobile node in a visited network and obtaining an address for the mobile node in the visited network, establishing a security connection between a functional component in the visited network and an agent in the home network, creating a home address for the mobile node, and using the home address to generate a SIP signaling address, a SIP media address, and a non-SIP media address, such that SIP non-media is transmitted using the security connection to the SIP signaling address, SIP media is transmitted using the security connection to the SIP media address, and non-SIP media is transmitted using the security connection to the non-SIP media address.
摘要翻译：提出了一种在异构漫游环境中具有家庭网络的移动节点的移动性支持的系统和方法。该方法包括以下步骤：对受访网络中的移动节点进行认证，并获得访问网络中的移动节点的地址，建立受访网络中的功能组件与家庭网络中的代理之间的安全连接，移动节点的地址，以及使用家庭地址生成SIP信令地址，SIP媒体地址和非SIP媒体地址，使得使用与SIP信令地址的安全连接来发送SIP非媒体，SIP 使用安全连接将媒体发送到SIP媒体地址，并且使用与非SIP媒体地址的安全连接来发送非SIP媒体。

28. 发明申请

US20080070573A1 Methods of mitigation of trombone routing in an IMS/MMD network 有权
标题翻译：在IMS / MMD网络中缓解长号路由的方法
公开(公告)号：US20080070573A1
公开(公告)日：2008-03-20
申请号：US11898000
申请日：2007-08-31
申请人： Ashutosh Dutta , Abhrajit Ghosh , John Lee , Subir Das , Joe Lin , Kyriakos Manousakis , Tsunehiko Chiba , Hidetoshi Yokota , Akira Idoue
发明人： Ashutosh Dutta , Abhrajit Ghosh , John Lee , Subir Das , Joe Lin , Kyriakos Manousakis , Tsunehiko Chiba , Hidetoshi Yokota , Akira Idoue
IPC分类号： H04Q7/20
CPC分类号： H04W8/082 , H04L65/1006 , H04L65/1073 , H04W8/06 , H04W80/04 , H04W80/10
摘要： The present invention advantageously provides several systems and methods for solving the trombone routing issues within an IMS/MMD network. These approaches avoid trombone routing, speed up handoff, and increase the efficiency of signaling and overall performance of an IMS/MMD network. These solutions can broadly be divided into the following categories. Piggy-backing SIP registration over MIP (Split at FA); Selective Reverse Tunneling and Tunneling between FA and P-CSCF; the SIP-based mobility protocol; use of CoA during SIP registration and call up in MIPv6; Piggy-backing SIP registration when HA and S-CSCF Co-exist; Using Dynamic Home Agents in MIPv4 FA-CoA; and the Interceptor-Caching Approach.
摘要翻译：本发明有利地提供了用于解决IMS / MMD网络内的长号路由问题的几种系统和方法。这些方法避免了长号线路路由，加速切换，并提高了IMS / MMD网络的信令效率和整体性能。这些解决方案可以大致分为以下几类。通过MIP支持SIP注册（在FA中分拆）; FA和P-CSCF之间的选择性反向隧道和隧道; 基于SIP的移动协议; SIP注册期间使用CoA并在MIPv6中调用; 当HA和S-CSCF共存时，捎带SIP注册; 在MIPv4 FA-CoA中使用动态归属代理; 和拦截器缓存方法。

29. 发明授权

US06992994B2 Methods and systems for a generalized mobility solution using a dynamic tunneling agent 有权
公开(公告)号：US06992994B2
公开(公告)日：2006-01-31
申请号：US09834234
申请日：2001-04-12
申请人： Subir Das , Archan Misra , Anthony Mcauley , Ashutosh Dutta , Prathima Agrawal , Sajal Das
发明人： Subir Das , Archan Misra , Anthony Mcauley , Ashutosh Dutta , Prathima Agrawal , Sajal Das
IPC分类号： H04Q7/00
CPC分类号： H04W8/085 , H04L29/12367 , H04L61/2514 , H04W80/04
摘要： Methods and systems are provided for facilitating intra-domain mobility. A first network or domain includes a home agent or SIP proxy of a mobile node. A second network includes two or more subnetworks and at least one dynamic tunneling agent (DTA). Each subnetwork includes an associated subnet agent. To communicate, the mobile node first registers with a subnet agent, receives a local care-of-address and a global care-of-address, and then registers with a DTA. The local care-of-address received from the subnet agent may enable communication with the mobile node without determining a specific route to the mobile node. The global care-of-address received from the subnet agent may include the address of the DTA with which to register. On registering with the DTA, the DTA may provide the mobile node with a unique, globally reachable global care-of-address, which the mobile node may then forward to a home agent, SIP proxy, or a correspondent node. Accordingly, the mobile node may transition from any of the subnetworks to another subnetwork without communicating to the home agent information about the transition and without communicating to the DTA information about a security association between the mobile node and the home agent.

30. 发明申请

US20120020204A1 PUBLIC LAND MOBILE NETWORK SELECTION PROCEDURES FOR SIMULTANEOUS NETWORK CONNECTIVITY THROUGH MULTIPLE ACCESSES 有权
标题翻译：公共土地移动网络选择程序通过多个访问同时进行网络连接
公开(公告)号：US20120020204A1
公开(公告)日：2012-01-26
申请号：US13005764
申请日：2011-01-13
申请人： Raquel Morera , Subir Das , Yoshihiro Ohba
发明人： Raquel Morera , Subir Das , Yoshihiro Ohba
IPC分类号： H04W36/14
CPC分类号： H04W48/18 , H04W8/183
摘要： A system and method for network selection procedures for simultaneous network connectivity through multiple accesses comprises obtaining stored and registered PLMNs, determining whether PLMNs are both stored PLMN for access technology type Ai and registered PLMN, when no PLMNs are both, performing PLMN selection using a standard procedure, when only one PLMN is both, determining whether the PLMN satisfies a condition, and when the PLMN satisfies the condition, attempting to connect to the PLMN, and when more than one PLMN is both, creating a set of PLMNs, selecting one PLMN that satisfies the condition, from the set PLMN, attempting to connect to the selected PLMN, and when attempting to connect fails, removing the selected PLMN from the set, and selecting another PLMN. In one aspect, the PLMN that minimizes changes is selected. In one aspect, the PLMN that provides access to a larger number of access technologies is selected.
摘要翻译：用于通过多次访问同时进行网络连接的网络选择过程的系统和方法包括获得存储和注册的PLMN，当没有PLMN两者时，确定PLMN是否都存储用于接入技术类型Ai和注册PLMN的PLMN，使用标准执行PLMN选择过程中，当只有一个PLMN同时确定PLMN是否满足条件时，当PLMN满足条件时尝试连接到PLMN，并且当多于一个PLMN同时创建一组PLMN时，选择一个PLMN 满足条件，从集合PLMN尝试连接到所选择的PLMN，并且当尝试连接失败时，从集合中移除所选择的PLMN，并且选择另一个PLMN。在一个方面，选择最小化变化的PLMN。在一个方面，选择提供对更大数量的访问技术的访问的PLMN。

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