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    Broadcast/Multicast Filtering by the Bridge-Based Access Point
    1.
    发明专利
    Broadcast/Multicast Filtering by the Bridge-Based Access Point 未知

    公开(公告)号：CA2137587A1

    公开(公告)日：1996-06-09

    申请号：CA2137587

    申请日：1994-12-08

    Applicant: IBM CANADA ,  IBM

    Inventor： BAKER MURRAY C ,  BHATTACHARYA PARTHA P ,  CHEUNG ROGER Y M ,  KOBO ROBERTO M ,  KOLBE EDUARDO M ,  NAGHSHINEH MAHMOUD

    IPC: H04L12/46 ,  H04W4/06 ,  H04W88/10

    Abstract: In communication systems which include high speed wired local area networks (LANs) and low speed wireless LANs, the bandwidth of the wireless LANs can be severely impacted. It has been found that many broadcast or multicast messages which are forwarded to the wireless LANs are not required as the mobile terminals which would receive the messages are not required to act on them. The present invention provides a means and method to filter out unneeded messages so that they do not impact the bandwidth of the wireless network. Each access point for each wireless LAN maintains a table of parameters for each associated mobile terminal in the connected wireless LAN. The parameters in that table are compared to the parameters in message frames received by the access point and only those messages having parameters found in the table are put on the wireless LAN. The level of filtering can be controlled by specifying which parameters are to be used for filtering messages. The tables at each access point are maintained current by moving table entries from access point to access point as mobile terminals move from wireless LAN to wireless LAN and by removing inactive table entries from the table when a predetermined interval of inactivity is encountered and a terminal is determined to be no longer in active contact with the access point.

    METHOD AND APPARATUS FOR CONNECTING A WIRELESS LAN TO A WIRED LAN
    2.
    发明专利
    METHOD AND APPARATUS FOR CONNECTING A WIRELESS LAN TO A WIRED LAN 未知

    公开(公告)号：HUT76242A

    公开(公告)日：1997-07-28

    申请号：HU9603625

    申请日：1995-06-15

    Applicant: IBM

    Inventor： CHEUNG ROGER Y M ,  MCKAY DANNY N ,  REISSNER PETER E

    IPC: H04B7/26 ,  H04L12/28

    Abstract: An internetworking node for providing internetworking services for mobile wireless nodes. Each mobile wireless node is associated with at the most one internetworking node. Each mobile wireless node selects which internetworking node it will associate with. The internetworking node will then act for all wireless nodes associated to it in relaying messages between wireless nodes or between a wired Local Area Network (LAN) and the wireless nodes.

    6.
    发明专利
    未知

    公开(公告)号：ES2114326T3

    公开(公告)日：1998-05-16

    申请号：ES95924422

    申请日：1995-06-15

    Applicant: IBM

    Inventor： CHEUNG ROGER Y M ,  REISSNER PETER E ,  MCKAY DANNY N

    IPC: H04B7/26 ,  H04L12/28

    Abstract: An internetworking node for providing internetworking services for mobile wireless nodes. Each mobile wireless node is associated with at the most one internetworking node. Each mobile wireless node selects which internetworking node it will associate with. The internetworking node will then act for all wireless nodes associated to it in relaying messages between wireless nodes or between a wired Local Area Network (LAN) and the wireless nodes.

    Method and Apparatus for Connecting a Wireless Lan to a Wired Lan
    8.
    发明专利
    Method and Apparatus for Connecting a Wireless Lan to a Wired Lan 未知

    公开(公告)号：CA2129197A1

    公开(公告)日：1996-01-30

    申请号：CA2129197

    申请日：1994-07-29

    Applicant: IBM CANADA

    Inventor： CHEUNG ROGER Y M ,  REISSNER PETER E ,  MCKAY DANNY N

    IPC: H04B7/26 ,  H04L12/28

    Abstract: An internetworking node for providing internetworking services for mobile wireless nodes. Each mobile wireless node is associated with at the most one internetworking node. Each mobile wireless node selects which internetworking node it will associate with. The internetworking node will then act for all wireless nodes associated to it in relaying messages between wireless nodes or between a wired Local Area Network (LAN) and the wireless nodes.

    9.
    发明专利
    未知

    公开(公告)号：AT164481T

    公开(公告)日：1998-04-15

    申请号：AT95924422

    申请日：1995-06-15

    Applicant: IBM

    Inventor： CHEUNG ROGER Y M ,  REISSNER PETER E ,  MCKAY DANNY N

    IPC: H04B7/26 ,  H04L12/28

    Abstract: An internetworking node for providing internetworking services for mobile wireless nodes. Each mobile wireless node is associated with at the most one internetworking node. Each mobile wireless node selects which internetworking node it will associate with. The internetworking node will then act for all wireless nodes associated to it in relaying messages between wireless nodes or between a wired Local Area Network (LAN) and the wireless nodes.

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