Source: http://www.google.com/patents/US7634230?dq=6,424,354
Timestamp: 2014-12-25 20:18:48
Document Index: 265183579

Matched Legal Cases: ['art 3', 'art 3', 'Application No. 200310115416', 'Application No. 200310115416', 'Application No. 200310115416', 'Application No. 2003']

Patent US7634230 - Methods and apparatus for secure, portable, wireless and multi-hop data ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA mobile network solution provides secure and portable wireless networking service to mobile users with devices equipped with wireless network interfaces. The Secure Nomadic Wireless Network, or SNOWNET, follows a hierarchical approach. Special SNOWNET nodes are deployed in the area where networking...http://www.google.com/patents/US7634230?utm_source=gb-gplus-sharePatent US7634230 - Methods and apparatus for secure, portable, wireless and multi-hop data networkingAdvanced Patent SearchPublication numberUS7634230 B2Publication typeGrantApplication numberUS 10/463,857Publication dateDec 15, 2009Filing dateJun 18, 2003Priority dateNov 25, 2002Fee statusPaidAlso published asCN1503523A, CN1503523B, CN101835147A, US7881667, US8688041, US20040103275, US20080232338, US20110099611Publication number10463857, 463857, US 7634230 B2, US 7634230B2, US-B2-7634230, US7634230 B2, US7634230B2InventorsLusheng Ji, Jonathan Agre, Arunesh Mishra, Sohil ThakkarOriginal AssigneeFujitsu LimitedExport CitationBiBTeX, EndNote, RefManPatent Citations (25), Non-Patent Citations (8), Referenced by (15), Classifications (21), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetMethods and apparatus for secure, portable, wireless and multi-hop data networkingUS 7634230 B2Abstract A mobile network solution provides secure and portable wireless networking service to mobile users with devices equipped with wireless network interfaces. The Secure Nomadic Wireless Network, or SNOWNET, follows a hierarchical approach. Special SNOWNET nodes are deployed in the area where networking service is needed and form a backbone network. At the same time, SNOWNET nodes provide local access service to regular mobile clients. SNOWNET provides security through authentication of the nodes and clients, as well as through encryption of the data.
36. The wireless network as in claim 35, wherein the wireless network shares a �Private� Internet-style address space the gateway portable node devices perform NAT (Network Address Translation) to convert between private addresses and public addresses to enable communication between the wireless network and the Internet.
CROSS-REFERENCE TO RELATED APPLICATION This application is related to and claims priority to provisional application entitled METHODS AND APPARATUS FOR SECURE, PORTABLE, WIRELESS AND MULTI-HOP DATA NETWORKING�SECURE NOMADIC WIRELESS NETWORK (SNOWNET) having Ser. No. 60/428,700, by Lusheng Ji, Jonathan Agre, Arunesh Mishra, and Sohil Thakkar, filed Nov. 25, 2002 and incorporated by reference herein, priority to which is claimed under 35 U.S.C. 119.
IEEE 802.1d MAC Bridge protocol (�Part 3: Media Access Control (MAC) Bridges�, IEEE, 1998 (IEEE 802.1d); �Part 3: Media Access Control (MAC) Bridges�Amendment 2: Rapid Reconfiguration�, IEEE, 2001 (IEEE 802.1w)) is known in the art.
When SNOWNET nodes 302 operate in bridging mode, the SNOWNET nodes 302 execute the IEEE 802.1d MAC Bridge protocol, discussed herein above. SNOWNET nodes 302 may be referred to as �SNOWNET bridges� 305 when the SNOWNET nodes 302 are operating in bridging mode.
SNOWNET bridges 305 execute a spanning tree protocol to configure their forwarding topology within the backbone network 306. The spanning tree protocol for SNOWNET bridges 305 incorporate the IEEE 802.1d protocol, modified such that SNOWNET Bridge ports are a mix of physical and virtual entities. The local service access network interfaces of SNOWNET bridges are considered as physical ports by SNOWNET bridges 305. On the other hand, backbone �ports� are virtual and there is one port assigned for each backbone network link. That is, each virtual port is identified by the pair-wise combination of local backbone interface identity and the backbone interface identity on a neighboring bridge. In an embodiment, the communication between a bridge and all its neighboring bridges may share the same physical interface, as occurs in a broadcast link. All ports, virtual or physical, are identified before SNOWNET nodes 302 start the spanning tree protocol. During normal operation, the status of active ports is monitored constantly by a combination of passive traffic listening and active probing. If the status changes, the reconfiguration operation of the spanning tree protocol is executed.
When SNOWNET nodes 302 operate in the routing mode, the SNOWNET nodes 302 form a flat routing space over the backbone network 306 (as opposed to hierarchical or clustered approaches). These SNOWNET nodes 302 are referred to as SNOWNET routers 305 when operating in routing mode. In this case, the backbone network 306 is viewed as a variation of a Mobile Ad hoc Network (MANET) (IETF Mobile Ad-hoc Networks (manet) Working Group, on the world wide web at ietf.org/html.characters/manet-charter.html) and research results on MANET routing algorithms can be borrowed for SNOWNET routing (C. Perkins, E. Belding-Royer, and S. Das, �Ad hoc On-Demand Distance Vector (AODV) Routing�, IETF Internet Draft �draft-ietf-manet-aodv-11.txt�, Work in Progress, June 2002; D. Johnson, D. Maltz, Y. Hu, and J. Jetcheva, �The Dynamic Source Routing Protocol for Mobile Ad Hoc Networks (DSR)�, IETF Internet Draft <draft-ieff-manet-dsr-07.txt>, Work in Progress, February 2002; etc.).
In each routing table 500, there are two types of route entries: subnet routes and host routes. The former are aggregated route entries where each entry describes routes for all the hosts within the corresponding address space, expressed in traditional format as a combination of network address and network mask. The latter are for the routes towards specific mobile nodes 302, either the backbone interface of SNOWNET nodes or foreign mobile clients. In the examplerouting table 500, the entries for B1, B2, and B3 are host routes for SNOWNET node backbone interfaces, the entries for C5 are a host route for a foreign client, and the entries for AP1, AP2, and AP3 subnets are subnet routes. A longest match rule (W. Doeringer, G. Karjoth, and M. Nassehi, �Routing on longest-matching prefixes, IEEE/ACM Transactions on Networking (TON), Vol. 4, Issue 1, February, 1996) can be applied during route lookups.
The SNOWNET router 305 solves this problem by allowing two types of routes to coexist. For those clients 310 who stay with their original SNOWNET routers, the subnet routes for their subnets represent their routes. There is no specific route for each individual client of this type. For those clients who have left their original subnet and become �foreign clients� for other routers, each routing table explicitly lists their routes. Because of the support for �foreign mobile client�, there is no need for the client to acquire a new IP address in the address space of its current attachment environment while it is still within the SNOWNET 300.
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Ltd.Method and apparatus for transmitting data in bluetooth devices* Cited by examinerClassifications U.S. Classification455/41.2, 370/331International ClassificationH04L12/28, H04W40/26, H04W84/12, H04W84/18, H04W40/20, H04B5/00, H04W12/06, H04L12/46, H04L29/06Cooperative ClassificationH04W12/06, H04W40/26, H04W84/18, H04W40/20, H04L63/062, H04W84/12, H04L63/0823, H04L45/54European ClassificationH04L45/54, H04W84/12Legal EventsDateCodeEventDescriptionMar 8, 2013FPAYFee paymentYear of fee payment: 4Nov 24, 2003ASAssignmentOwner name: FUJITSU LIMITED, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JI, LUSHENG;AGRE, JONATHAN;MISHRA, ARUNESH;AND OTHERS;REEL/FRAME:014735/0839;SIGNING DATES FROM 20031113 TO 20031116RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google