公开(公告)号：US20090285103A1

公开(公告)日：2009-11-19

申请号：US12307559

申请日：2007-07-06

申请人： Jun Hirano ,  Chan Wah Ng ,  Pek Yew Tan ,  Tien Ming Benjamin Koh ,  Chun Keong Benjamin Lim

发明人： Jun Hirano ,  Chan Wah Ng ,  Pek Yew Tan ,  Tien Ming Benjamin Koh ,  Chun Keong Benjamin Lim

IPC分类号： H04L12/26

CPC分类号： H04L12/4633 ,  H04L45/00 ,  H04L45/18 ,  H04L2212/00

摘要： Disclosed is a technique whereby a packet transferring apparatus (particularly, a tunnel entry point made to carry out packet encapsulation) becomes capable of detecting a tunneling loop signifying that a packet loops along the same route while undergoing encapsulation. With this technique, at packet transfer, a loop detection module of a router according to the present invention stores a TEL value (value of tunnel encapsulation limit for limiting the number of times of duplication of tunnel) set in an encapsulation header of this packet or stores a TEL value set in an encapsulation header of a packet sent back as an ICMP error In addition, the loop detection module analyzes an increase/decrease variation pattern of the stored TEL value relative to time and, in a case in which the pattern agrees with a unique pattern (sawtooth-like pattern) appearing at the occurrence of a tunneling loop, estimates that a tunneling loop has occurred.

摘要翻译： 公开了一种技术，其中分组传送装置（特别是用于执行分组封装的隧道入口点）变得能够检测表示分组在进行封装时沿着相同路线循环的隧道循环。 利用这种技术，在分组传送中，根据本发明的路由器的环路检测模块存储设置在该分组的封装头部中的TEL值（用于限制隧道复制次数的隧道封装限制值） 存储在作为ICMP错误发回的分组的封装头部中设置的TEL值。此外，循环检测模块分析存储的TEL值相对于时间的增加/减少变化模式，并且在模式一致的情况下 在出现隧道循环时出现了独特的模式（锯齿状模式），估计已经发生了隧道循环。

公开(公告)号：US20090190564A1

公开(公告)日：2009-07-30

申请号：US12306906

申请日：2007-07-03

申请人： Jun Hirano ,  Mohana Dhamayanthi Jeyatharan ,  Chan Wan Ng ,  Pek Yew Tan

发明人： Jun Hirano ,  Mohana Dhamayanthi Jeyatharan ,  Chan Wan Ng ,  Pek Yew Tan

IPC分类号： H04W4/00

CPC分类号： H04W8/065 ,  H04W80/04 ,  H04W84/005

摘要： A technique is disclosed to decrease unnecessary routing during communication between a mobile node and a correspondent node in case a home agent of the mobile node is a mobile home agent. According to this technique, HA 112 positioned in a home network 102 and HA 114 of MN 130 are included. In a communication system, where HA 114 is a mobile home agent, and a mobile network 104 of HA 114 is hierarchized under the home network 102, HA 114, which is a home agent, discovers HA 112 positioned in the home network 102 when it is detected that it is away from the home network 102 and delegates binding cache entry of MN 130 under its own management to HA 112 so that HA 112 acts as a home agent for MN 130.

摘要翻译： 公开了一种技术，用于在移动节点的归属代理是移动归属代理的情况下，在移动节点和通信节点之间的通信期间减少不必要的路由。 根据该技术，包括位于家庭网络102中的HA 112和MN 130的HA 114。 在HA 114是移动归属代理的HA 114的通信系统中，HA 114的移动网络104在家庭网络102下层级化，作为归属代理的HA 114发现位于家庭网络102中的HA 112 被检测到它远离家庭网络102并且将其自身管理下的MN 130的绑定缓存条目委托给HA 112，使得HA 112充当MN 130的归属代理。

公开(公告)号：US20090161558A1

公开(公告)日：2009-06-25

申请号：US12096346

申请日：2006-12-07

申请人： Jun Hirano ,  Chan Wah Ng ,  Pek Yew Tan ,  Tien Ming Benjamin Koh ,  Mohana Dhamayanthi Jeyatharan

发明人： Jun Hirano ,  Chan Wah Ng ,  Pek Yew Tan ,  Tien Ming Benjamin Koh ,  Mohana Dhamayanthi Jeyatharan

IPC分类号： H04L12/26

CPC分类号： H04W40/24 ,  H04L45/18 ,  H04W80/04 ,  H04W84/005

摘要： There is disclosed a technique which can detect a packet routing loop (in particular, a nesting loop formed by MRs (mobile routers). According to this technique, an MR 114 connected as a subordinate to an MR 110 transmits a BU (Binding Update) message, to which added is an ARO (Access Router Option) including an address of a router (MR 110) connected at present, to an HA (Home Agent) 140 to which it pertains. Moreover, an MR 112 is connected as a subordinate to the MR 114 and, when connected to the MR 112, the MR 110 transmits a BU message, to which added is an ARO including an address of the MR 112, to the HA 140. At this time, the MR 112 also transmits a BU message, to which added is an ARO including an address of the MR 114, to the HA 140. Thus, the HA 140 can detect a routing loop formed by connections 120, 122 and 124.

摘要翻译： 公开了一种可以检测分组路由循环（特别是由MR（移动路由器）形成的嵌套循环）的技术，根据该技术，作为从属于MR 110的MR 114连接，发送BU（绑定更新） 消息，其中添加的是包括当前连接的路由器（MR 110）的地址的ARO（接入路由选择）到与其相关的HA（归属代理）140，此外，MR 112作为从属 并且当连接到MR 112时，MR 110向HA 140发送一个BU消息，该消息被添加为包括MR 112的地址的ARO。此时，MR 112还发送一个 BU消息，其中添加的是包括MR 114的地址的ARO到HA 140.因此，HA 140可以检测由连接120,122和124形成的路由环路。

公开(公告)号：US20090122769A1

公开(公告)日：2009-05-14

申请号：US11994840

申请日：2006-07-12

申请人： Jun Hirano ,  Tien-Ming Benjamin ,  Chan Wah Ng ,  Pek Yew Tan

发明人： Jun Hirano ,  Tien-Ming Benjamin ,  Chan Wah Ng ,  Pek Yew Tan

IPC分类号： H04W40/04

CPC分类号： H04W64/00 ,  H04W36/32 ,  H04W64/006

摘要： A technology is disclosed for efficiently and effectively conveying location and mobility related information about a mobile node to the network in order to facilitate Location and mobility related functions and services. According to this technology, in order to detect location and mobility (for example, movement velocity) of the mobile node, dissemination of information including the identification information of the mobile node and the count metric indicating the distance to the mobile node is performed among adjacent network nodes. The network node, upon receiving this message, stores the information in the message, and generates a new count metric by decreasing the count metric. The network node then sends the message including the identification information of the mobile node and this newly generated count metric to the other network nodes. For example the network node determines the priority of resource reservation for each mobile node based on the count metric of each mobile node.

摘要翻译： 公开了一种技术，用于将关于移动节点的位置和移动性相关信息有效地传送到网络，以便于定位和移动性相关的功能和服务。 根据该技术，为了检测移动节点的位置和移动性（例如，移动速度），包括移动节点的识别信息的信息的传播和指示到移动节点的距离的计数度量在相邻的 网络节点。 网络节点在接收到该消息后，将信息存储在消息中，并通过减少计数度量来生成新的计数度量。 网络节点然后将包括移动节点的识别信息和该新生成的计数度量的消息发送到其他网络节点。 例如，网络节点基于每个移动节点的计数度量来确定每个移动节点的资源预留的优先级。

公开(公告)号：US20090040987A1

公开(公告)日：2009-02-12

申请号：US12089599

申请日：2006-10-13

申请人： Jun Hirano ,  Chan Wah Ng ,  Mohana Dhamayanthi ,  Pek Yew Tan

发明人： Jun Hirano ,  Chan Wah Ng ,  Mohana Dhamayanthi ,  Pek Yew Tan

IPC分类号： H04W8/00

CPC分类号： H04L29/12264 ,  H04L29/12301 ,  H04L29/12311 ,  H04L29/1232 ,  H04L61/2046 ,  H04L61/2076 ,  H04L61/2084 ,  H04L61/2092 ,  H04W8/082 ,  H04W48/08 ,  H04W80/04 ,  H04W84/005

摘要： A technology is disclosed for reducing the burst of DAD messages which may be triggered due to the change of the network prefix when using the technique of the neighbor discovery proxy. According to this technology, in roaming from the access network link 101 to the access network link 102, MR 121 receives advertisement of a new prefix 172 from AR 112. MR 121 selects either one of MR 122 and MR 123 which are connected behind MR 121, and informs, for example only MR 122, that it is necessary to change the prefix. Thus, MR 122 and VMN 132 which is connected to the link 142 behind MR 122, configure new addresses, respectively. When address configuration is completed at the mobile network of MR 122, MR 121 informs another MR 123 that it is necessary to change the prefix, and then MR 123 and VMN 133 configure new addresses, respectively. This can prevent DAD messages generated along with the address configuration from flocking in a short period.

摘要翻译： 公开了一种用于减少当使用邻居发现代理的技术时由于网络前缀变化而可能触发的DAD消息突发的技术。 根据该技术，在从接入网络链路101到接入网络链路102的漫游中，MR 121从AR 112接收新的前缀172的广告.MR 121选择连接在MR 121之后的MR 122和MR 123中的任一个 ，并且例如仅通知MR 122，需要改变前缀。 因此，连接到MR122之后的链路142的MR 122和VMN 132分别配置新的地址。 当在MR 122的移动网络上完成地址配置时，MR 121通知另一个MR 123需要改变前缀，然后MR 123和VMN 133分别配置新的地址。 这可以防止在短时间内与地址配置一起生成的DAD消息涌现。

公开(公告)号：US20090031130A1

公开(公告)日：2009-01-29

申请号：US11912605

申请日：2006-04-28

申请人： Jun Hirano ,  Chan Wah Ng ,  Pek Yew Tan

发明人： Jun Hirano ,  Chan Wah Ng ,  Pek Yew Tan

IPC分类号： H04L9/32 ,  H04W40/02

CPC分类号： H04L29/12009 ,  H04L29/12933 ,  H04L61/6068 ,  H04L63/0823 ,  H04L63/126 ,  H04W60/00 ,  H04W76/12 ,  H04W80/04 ,  H04W84/042

摘要： Route optimization between a mobile network and correspondent node may be achieved by having the mobile router of the mobile network sending prefix-scoped binding update messages to the correspondent node. In order to allow the recipient of a prefix-scoped binding update message to verify the mobile network prefix information contained in the said prefix-scoped binding update message, the present invention provides a system, and associated methods and apparatus thereof, of using special cryptographic certificates to prove the ownership of the network prefixes. The certificates, or parameters derived from the certificates, are transmitted alongside the network prefix in the binding update message sent to the correspondent node. By verifying the network prefix against the certificates, or parameters derived from the certificates, a correspondent node can determine the validity of a prefix-scoped binding update message.

摘要翻译： 可以通过使移动网络的移动路由器向通信节点发送前缀范围的绑定更新消息来实现移动网络和通信节点之间的路由优化。 为了允许接收方具有前缀范围的绑定更新消息来验证包含在所述前缀范围的绑定更新消息中的移动网络前缀信息，本发明提供一种系统及其相关联的方法和装置，其使用特殊密码 证书证明网络前缀的所有权。 证书或从证书导出的参数与发送到对端节点的绑定更新消息中的网络前缀一起传输。 通过根据证书或从证书导出的参数验证网络前缀，通信节点可以确定前缀范围绑定更新消息的有效性。

公开(公告)号：US20090024732A1

公开(公告)日：2009-01-22

申请号：US12281435

申请日：2007-03-08

申请人： Jun Hirano ,  Chun Keong Benjamin Lim ,  Chan Wah Ng ,  Pek Yew Tan

发明人： Jun Hirano ,  Chun Keong Benjamin Lim ,  Chan Wah Ng ,  Pek Yew Tan

IPC分类号： G06F15/173

CPC分类号： H04L61/2092 ,  H04L29/1232 ,  H04W8/26 ,  H04W40/24 ,  H04W80/04 ,  H04W84/005

摘要： Disclosed is a technique which enables a communication node connected to a router made to advertise a plurality of prefixes to use an address including an appropriate prefix. According to this technique, an MR (Mobile Router) (10) multicasts, to a mobile PAN (31), a router advertisement message including a prefix (MNPNEMO) derived from a home network to which it pertains, a prefix (MNPAR) advertised from an AR (access router) (10a) and prefix choice information indicative of one of the prefixes to be selected on the basis of a function relative to the mobile PAN (31). A node (VN 20a, LN 20b) connected to the mobile PAN refers to the prefix choice information of the router advertisement message so as to select a prefix appropriate thereto for configuring its own global address.

摘要翻译： 公开了一种技术，其使得连接到路由器的通信节点能够通告多个前缀来使用包括适当前缀的地址。 根据该技术，MR（移动路由器）（10）向移动PAN（31）组播包含从其所属的归属网络导出的前缀（MNPNEMO）的路由器通告消息，广播前缀（MNPAR） 基于相对于移动PAN（31）的功能，从AR（接入路由器）（10a）和前缀选择信息指示要选择的前缀之一。 连接到移动PAN的节点（VN 20a，LN 20b）是指路由器通告消息的前缀选择信息，以便选择适合于其的前缀来配置其自己的全局地址。

公开(公告)号：US07460543B2

公开(公告)日：2008-12-02

申请号：US10639458

申请日：2003-08-13

申请人： Rahul Malik ,  Wei Lih Lim ,  Pek Yew Tan

发明人： Rahul Malik ,  Wei Lih Lim ,  Pek Yew Tan

IPC分类号： H04L12/28

CPC分类号： H04L47/824 ,  H04L47/10 ,  H04L47/14 ,  H04L47/24 ,  H04L47/28 ,  H04L47/70 ,  H04L47/788 ,  H04L47/805 ,  H04L47/822 ,  H04L47/826 ,  H04W74/02 ,  Y02D70/142 ,  Y02D70/20

摘要： The present invention provides a method and system for efficiently scheduling wireless LAN traffic, giving the network the ability to serve both real-time and non-real time applications concurrently, while maintaining a requested level of quality of service for the real time application. It describes a method for scheduling quality of service traffic and a method to optimize this schedule thereby reducing the overall amount of time that is required for serving quality of service traffic (which is coordinated by a centralized network coordinator entity) and increasing the bandwidth available for non-real-time traffic. One application of such a scheduler would be WLANs that carry AV streams, such as may be found in a home based WLAN. Furthermore, a method is provided for announcing the schedule to all nodes in a wireless network to, for example, implement a power savings feature, thereby optimizing battery life and reducing the size and weight of portable network access terminals.

摘要翻译： 本发明提供了一种用于有效地调度无线LAN业务的方法和系统，给予网络同时服务于实时和非实时应用的能力，同时保持实时应用所要求的服务质量水平。 它描述了一种用于调度服务质量流量的方法和一种优化该调度的方法，从而减少服务服务质量（由集中式网络协调器实体协调）所需的总时间量，并且增加可用于 非实时流量。 这种调度器的一个应用是携带AV流的WLAN，例如可以在基于家庭的WLAN中找到。 此外，提供了一种用于向无线网络中的所有节点通知该调度以便例如实现功率节省特征，从而优化电池寿命并减小便携式网络接入终端的大小和重量的方法。

公开(公告)号：US20080253340A1

公开(公告)日：2008-10-16

申请号：US11721773

申请日：2005-12-21

申请人： Jun Hirano ,  Chan Wah Ng ,  Tien-Ming Benjamin Koh ,  Pek Yew Tan

发明人： Jun Hirano ,  Chan Wah Ng ,  Tien-Ming Benjamin Koh ,  Pek Yew Tan

IPC分类号： H04Q7/24

CPC分类号： H04L12/66 ,  H04W76/19 ,  H04W84/18

摘要： According to the present invention, connection can be always maintained between the mobile node and the access router, and disruption of on-going transport session can be prevented by making effective use of two architectures (hierarchical and mesh architectures). The mobile nodes 1000-1, 1000-2 and 1000-3 are attached to the access router 1100-1. When the mobile node maintains link layer connectivity with the access router, it is in the hierarchical mode, whereas when the link layer connectivity is lost, it enters the mesh mode. In the mesh mode, the mobile node attempts to establish virtual link layer connectivity with the access router through other nodes by using mesh network protocol such as MANET. In the mesh mode, the packet is capsulated between the mobile node and the access router when the mobile node and the peer 1400-1 communicate with each other.

摘要翻译： 根据本发明，可以在移动节点和接入路由器之间始终保持连接，并且可以通过有效地使用两种架构（分级和网格架构）来防止正在进行的传输会话的中断。 移动节点1000-1,1000-2和1000-3附接到接入路由器1100-1。 当移动节点保持与接入路由器的链路层连通性时，它处于分层模式，而当链路层连通性丢失时，它进入网状模式。 在网格模式中，移动节点通过使用诸如MANET之类的网状网络协议，尝试通过其他节点与接入路由器建立虚拟链路层连通性。 在网格模式下，当移动节点和对等体1400-1彼此通信时，分组在移动节点和接入路由器之间被封装。

公开(公告)号：US20070171876A1

公开(公告)日：2007-07-26

申请号：US10591600

申请日：2005-03-08

申请人： Rahul Malik ,  Pek Yew Tan ,  Daichi Imamura ,  Junya Yamazaki ,  Katsuyoshi Naka

发明人： Rahul Malik ,  Pek Yew Tan ,  Daichi Imamura ,  Junya Yamazaki ,  Katsuyoshi Naka

IPC分类号： H04J3/00

CPC分类号： H04W28/06 ,  H04W84/12

摘要： The invention includes methods for achieving efficient channel access in a wireless communications system. The invention is embodied in a wireless network adapter that is present in all stations belonging to the network. The invention describes methods by which access overheads may be reduced by introducing the concept of context sensitive frame timing—using which stations redefine and interpret frame timing depending on context and signaling. The result of realizing the invention is an improvement in medium utilization efficiency and consequently, an overall improvement in network throughput.

摘要翻译： 本发明包括在无线通信系统中实现有效的信道接入的方法。 本发明体现在存在于属于网络的所有站中的无线网络适配器中。 本发明描述了通过引入上下文敏感帧定时的概念来降低接入开销的方法，其中哪些站根据上下文和信令重新定义和解释帧定时。 实现本发明的结果是提高了介质利用效率，从而提高了网络吞吐量。