公开(公告)号：PL178086B1

公开(公告)日：2000-02-29

申请号：PL31667195

申请日：1995-09-08

Applicant: IBM

Inventor： BAKER MURRAY C ,  BHATTACHARYA PARTHA P ,  CHEN JEANE S C ,  CHEUNG ROGER Y M ,  KRISHNA ARVIND ,  REISSNER PETER E ,  NAGHSHINEH MAHMOUD

IPC: H04L12/28 ,  H04L12/56 ,  H04W40/24 ,  H04W40/28 ,  H04W40/36 ,  H04W92/02 ,  H04Q11/04

Abstract: A method of routing packets through a fixed source routing communications network from and to mobile units. With this invention an initial access point is determined when a communications session is established to or from a mobile unit through the network. Location information is updated each time the mobile unit moves out of the range of one access point and into the range of another access point of the network. When packets for the session are to be transmitted to the mobile unit from the wired network, the packets are forwarded from the initial access point to a current access point, which by definition is in the range of the mobile unit. When packets for the session are to be transmitted from the mobile unit and to the wired network, the access point intercepts these packets and routes them to their destination and/or initiates route discovery to those destinations. When packets are to be transmitted between mobiles at different access points. The packets are sent between the current access points and not through the home access points.