The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2009
Filed:
Jul. 02, 2004
Koji Omae, Yokohama, JP;
Hideaki Takahashi, Yokohama, JP;
Ichiro Okajima, Yokohama, JP;
Narumi Umeda, Yokohama, JP;
Koji Omae, Yokohama, JP;
Hideaki Takahashi, Yokohama, JP;
Ichiro Okajima, Yokohama, JP;
Narumi Umeda, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A mobile node (MN) transmits a () echo request to the effect that the source address is set to be a new care of address (nCoA) right after transmitting a () binding update (BU) for a home agent (HA). The nAR having received the () echo request intends to transmit an echo reply to the nCoA being the source address of the echo request. However, at this time, since an entry regarding the nCoA does not exist in a neighbor cache of the nAR, the nAR transmits () neighbor solicitation (NS) to the MN, and generates a neighbor cache entry of the nCoA. After this, at the time when a binding acknowledgment (BA) has arrived at the nAR, since the entry of the nCoA exists, the () BA and data packets () to () arriving at the nAR following the () BA are transferred to the MN without buffering in the nAR, corresponding to the entry of the nCoA generated at the time of transmission of the () echo reply.