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. 24, 2009
Filed:
Dec. 24, 2003
Koji Omae, Yokohama, JP;
Masahiro Inoue, Yokosuka, JP;
Ichiro Okajima, Yokohama, JP;
Narumi Umeda, Yokohama, JP;
Koji Omae, Yokohama, JP;
Masahiro Inoue, Yokosuka, JP;
Ichiro Okajima, Yokohama, JP;
Narumi Umeda, Yokohama, JP;
NT DoCoMo, Inc., Tokyo, JP;
Abstract
Provided is a mobility management node capable of forming a paging area, without need for management of a migration history at a mobile node and for notification of a migration history from a mobile node to a network. In mobility management node (MAP), mobility managerlets binding cachestore a home address and a c/o address of each mobile node (MN) in correlation with each other. Migration history storagestores a transition frequency of the c/o address stored in binding cachein correlation with prefixes before and after transition. Migration history storagedefines paging area information by a set of prefixes included in combinations containing common prefixes, out of combinations of prefixes before and after transition with each of which a transition frequency over a predetermined reference value is correlated. Paging controllernotifies the MN of this paging area information.