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:
Apr. 14, 2009
Filed:
Jan. 27, 2004
Satoshi Hiyama, Yokohama, JP;
Toshihiro Suzuki, Yokohama, JP;
Masashi Yamashita, Yokosuka, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
Use of finite wireless resources is minimized when paging is performed to an MN, even if a location manager does not retain correct location area information for the reason that a mobile router (MR), which performs location update (LU) on behalf of mobile nodes (MNs) existing in the space in a moving body, does not send an LU signal because it is active, for example. A flag indicating whether an MR#is dormant or active is retained in a location manager LM#. When paging is performed to an MN#which is in a master-slave relationship with the MR#, the LM#refers to the flag to determine the state of the MR#. When the MR#is active, the LM#inquires of a routing manager RM#about routing address information for the MR#and performs paging using the information. Thus, it is possible to perform paging to the MN#which is in a master-salve relationship with the MR#, without the MR#, which is moving in an active state, sending an LU signal.