Patent ID: 7433691
Filing Date: 2008-10-07
Classification: H04W

Abstract:
1. A method of sending a message from an access point to a wireless mobile node in an ad-hoc wireless network, said ad-hoc wireless network comprising a plurality of nodes and at least one access point which provides said wireless mobile node and said plurality of nodes with access to at least one of a portion of said network and a wired network, wherein said wireless mobile node's location in said ad-hoc wireless network changes at a non-deterministic rate, said method comprising: affiliating said wireless mobile node with said access point; identifying and storing at said affiliated access point a first routing path and associated information from said affiliated access point to said wireless mobile node, said first routing path including at least one other of said nodes between said affiliated access point and said wireless mobile node; identifying and storing at said affiliated access point a second routing path and associated information from said affiliated access point to said wireless mobile node when said wireless mobile node moves by at least a certain amount, said second routing path including at least one other of said nodes between said affiliated access point and said wireless mobile node; providing said message to said affiliated access point; and sending said message from said affiliated access point to said wireless mobile node along said first routing path when said wireless mobile node has not moved by said certain amount and sending said message from said affiliated access point to said wireless mobile node along said second routing path when said wireless mobile node has moved by at least said certain amount.