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System and method for a wireless unit acquiring a new internet protocol address when roaming between two subnets

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04Q-007/00
출원번호 US-0753218 (2000-12-28)
발명자 / 주소
  • Engwer,Darwin A.
  • Zweig,Jonathan M.
  • McDaid,Paul
출원인 / 주소
  • Nortel Networks Limited
대리인 / 주소
    Blakely Sokoloff Taylor &
인용정보 피인용 횟수 : 50  인용 특허 : 9

초록

In a wireless network system having a wired backbone network with two or more sub-networks, each having one or more access points for communicating with wireless units via a wireless transmission medium, a system, apparatus and method for a wireless unit to determine whether a candidate access point

대표청구항

The invention claimed is: 1. In a wireless network system comprising a wireless unit, a first sub-network including a plurality of access points and a second sub-network including at least a second access point, a method comprising: receiving data packets by the wireless unit, each of the data pack

이 특허에 인용된 특허 (9)

  1. Ahmed, Walid; Doshi, Bharat Tarachand; Jiang, Hong; Monogioudis, Pantelis; Rege, Kiran M., Addressing techniques for use in an internet protocol-based multimedia mobile network.
  2. Pinard, Patrick; Kawaguchi, Dean, Data rate algorithms for use in wireless local area networks.
  3. Meier, Robert C., Enhanced mobility and address resolution in a wireless premises based network.
  4. Sharony, Jacob, Local addressing of mobile units in a WLAN with multicast packet addressing.
  5. Cheung Roger Y. M.,CAX ; Reissner Peter E.,CAX ; McKay Danny N.,CAX, Method and apparatus for connecting a wireless LAN to a wired LAN.
  6. Lee, Frances; Ennis, Gregory, Mobile internet communication protocol.
  7. James A. Minnick ; Michael A. Bueter ; Jeffrey D. Coil ; David C. Krueger, Multiple channel communications system.
  8. Cudak Mark Conrad ; Mueller Bruce Dale ; Kelton James Robert ; Classon Brian Keith, Network protocol method, access point device and peripheral devices for providing for an efficient centrally coordinated peer-to-peer wireless communications network.
  9. Engwer Darwin A. ; Clements Ken ; Zweig Jonathan M. ; Perrin Daniel S., Seamless roaming for wireless local area networks.

이 특허를 인용한 특허 (50)

  1. Lee, Sung-Jin; Son, Jung-Je; Joo, Pan-Yuh; Jung, Jun-Young; Kim, Chong-Kwon; Yoo, Joon, Apparatus and method for implementing handoff between heterogeneous networks in a wireless communication system.
  2. Jung, Bu-Seop; Kim, Moon-Soo; Lee, Jun-Ho, Apparatus and method for providing a wireless communication in a portable terminal.
  3. O'Neill, Alan, Controlling hand-off in a mobile node with two mobile IP clients.
  4. Qu, Huyu; Wang, Ynjiun P., Encoded information reading terminal operating in infrastructure mode and ad-hoc mode.
  5. Qu, Huyu; Wang, Ynjiun P., Encoded information reading terminal operating in infrastructure more and AD-HOC mode.
  6. Ayyagari, Arun; AbiEzzi, Salim S.; Zintel, William Michael; Moore, Timothy M., Extending access to a device in a limited connectivity network to devices residing outside the limited connectivity network.
  7. Balasubramanian, Sivaram; Moldovansky, Anatoly, Fault-tolerant ethernet network.
  8. Joshi, Ravi Arun; Lee, Hoon Ki; Kunamalla, Shravya; Bahini, Dagbegnon Henri; Chauhan, Rajesh, Inter-subnet and intra-subnet roaming.
  9. Chong, Koan Seng; Freeman, Brian D.; Gabin, Jay; Goins, Daryl; Merhav, Galia; O'Connor, Lina; Wechsler, Chesla C., Method and apparatus for detecting subscriber service address change.
  10. He, Haixiang; Engwer, Darwin, Method and apparatus for extending a mobile unit data path between access points.
  11. Tucker, Mark L.; Bruestle, Jeremy, Method and apparatus for persistent connections to a device through the use of multiple physical network connections and connection hand-offs between multiple bands, modes and networks.
  12. Tucker, Mark L.; Bruestle, Jeremy, Method and apparatus for persistent connections to a device through the use of multiple physical network connections and connection hand-offs between multiple bands, modes and networks.
  13. Tucker, Mark L.; Bruestle, Jeremy, Method and apparatus for persistent connections to a device through the use of multiple physical network connections and connection hand-offs between multiple bands, modes and networks.
  14. Tucker, Mark L.; Bruestle, Jeremy, Method and apparatus for persistent connections to a device through the use of multiple physical network connections and connection hand-offs between multiple bands, modes and networks.
  15. Tucker, Mark L.; Bruestle, Jeremy, Method and apparatus for persistent connections to a device through the use of multiple physical network connections and connection hand-offs between multiple bands, modes and networks.
  16. Tucker, Mark L.; Bruestle, Jeremy, Method and apparatus for persistent connections to a device through the use of multiple physical network connections and connection hand-offs between multiple bands, modes and networks.
  17. Molteni, Marco; Lucchina, Massimo G, Method for a wireless station to determine network metrics prior to associating with an access point of a wireless network.
  18. Das, Suman; Klein, Thierry E.; Leung, Kin K.; Mukherjee, Sayandev; Rittenhouse, George E.; Samuel, Louis Gwyn; Viswanathan, Harish; Zheng, Haitao, Method for controlling a flow of information between secondary agents and a mobile device in a wireless communications system.
  19. O'Neill, Alan, Method for extending mobile IP and AAA to enable integrated support for local access and roaming access connectivity.
  20. Pathan, Arnavkumar M.; Leung, Patrick Pak-Chiu, Methods and apparatus for reducing roaming latency in a mobile node.
  21. Smith, Brian James; Albuquerque, Marcelo M.; Ayyagari, Arun; Dorsett, Michael A., Methods and apparatus for routing data to nodes.
  22. Schulzrinne, Henning G.; Srinivasan, Suman Ramkumar, Methods and media for exchanging data between nodes of disconnected networks.
  23. Rantanen, Tommi; Kroselberg, Dirk; Von Brandt, Achim; Premec, Domagoj, Methods, apparatuses, system, related computer program product and data structures for informing of roaming restrictions.
  24. Forte, Andrea G.; Schulzrinne, Henning G., Methods, media, and devices for moving a connection from one point of access to another point of access.
  25. Forte, Andrea G.; Schulzrinne, Henning G., Methods, media, and devices for moving a connection from one point of access to another point of access.
  26. Forte, Andrea G.; Schulzrinne, Henning G., Methods, media, and devices for moving a connection from one point of access to another point of access.
  27. Stolfo, Salvatore J.; Ciocarlie, Gabriela F.; Frias-Martinez, Vanessa; Parekh, Janak; Keromytis, Angelos D.; Sherrick, Joseph, Methods, media, and systems for securing communications between a first node and a second node.
  28. Stolfo, Salvatore J.; Ciocarlie, Gabriela F.; Frias-Martinez, Vanessa; Parekh, Janak; Keromytis, Angelos D.; Sherrick, Joseph, Methods, media, and systems for securing communications between a first node and a second node.
  29. Stolfo, Salvatore J.; Ciocarlie, Gabriela F.; Frias-Martinez, Vanessa; Parekh, Janak; Keromytis, Angelos D.; Sherrick, Joseph, Methods, media, and systems for securing communications between a first node and a second node.
  30. Kim, Jai-Dong; Lee, Jai-Ho, Mobile terminal apparatus for automatically generating/changing wireless local area network (WLAN) access information and method for controlling the same.
  31. Kim, Jai-Dong; Lee, Jai-Ho, Mobile terminal apparatus for automatically generating/changing wireless local area network (WLAN) access information and method for controlling the same.
  32. Kim, Jai-Dong; Lee, Jai-Ho, Mobile terminal apparatus for automatically generating/changing wireless local area network (WLAN) access information and method for controlling the same.
  33. Kim, Jai-Dong; Lee, Jai-Ho, Mobile terminal apparatus for automatically generating/changing wireless local area network (WLAN) access information and method for controlling the same.
  34. Kim, Jai-Dong; Lee, Jai-Ho, Mobile terminal apparatus for automatically generating/changing wireless local area network (WLAN) access information and method for controlling the same.
  35. Kim, Jai-Dong; Lee, Jai-Ho, Mobile terminal apparatus for automatically generating/changing wireless local area network (WLAN) access information and method for controlling the same.
  36. Kim, Jai-Dong; Lee, Jai-Ho, Mobile terminal apparatus for automatically generating/changing wireless local area network (WLAN) access information and method for controlling the same.
  37. Griswold,Victor J.; Meier,Robert, Optimizing 802.11 power-save for IP multicast groups.
  38. O'Neill, Alan, Packet forwarding methods for use in handoffs.
  39. Katsumata,Toshikazu; Shimizu,Hideo; Nomura,Hiroshi, Radio lan communication system.
  40. Wang, Ynjiun P.; Qu, Huyu, Roaming encoded information reading terminal.
  41. Wang, Ynjiun P.; Qu, Huyu, Roaming encoded information reading terminal.
  42. Wang, Ynjiun P.; Qu, Huyu, Roaming encoded information reading terminal.
  43. Wang, Ynjiun P.; Qu, Huyu, Roaming encoded information reading terminal.
  44. Zheng, Jun; Yao, Chunyan; Wen, Haibo; Bin, Fanxiang; Ma, Songwei, Roaming method for a mobile terminal in WLAN, related access controller and access point device.
  45. Thompson, James; McClelland, Kathleen E.; Stewart, Brett B., System and method for concurrently utilizing multiple system identifiers.
  46. Thompson, James; McClelland, Kathleen E.; Stewart, Brett B., System and method for concurrently utilizing multiple system identifiers.
  47. Maksymczuk, Tomasz; Mamczynski, Michal, Systems and methods increased mobility among mobile nodes in a wireless network.
  48. Kim, Byoung Chul; Kang, Byung Chang, Transferring context during hand-over of mobile node in a wireless network.
  49. Molteni, Marco; Lucchina, Massimo G; Thubert, Pascal, Using an L2 method to locate and associate with a wireless network in communication with a mobile IP agent.
  50. Luo, Hui, Zero-configuration secure mobility networking technique with web-based authentication interface for large WLAN networks.
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