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:
Sep. 01, 2009
Filed:
Mar. 20, 2006
Yukio Haseba, Tokyo, JP;
Daisuke Kondo, Tokyo, JP;
Emiko Sakuma, Tokyo, JP;
Osami Nishimura, Tokyo, JP;
Hisashi Kawabata, Tokyo, JP;
Motoya Iwasaki, Tokyo, JP;
Yukio Haseba, Tokyo, JP;
Daisuke Kondo, Tokyo, JP;
Emiko Sakuma, Tokyo, JP;
Osami Nishimura, Tokyo, JP;
Hisashi Kawabata, Tokyo, JP;
Motoya Iwasaki, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An active set control method for handover operation in a CDMA communications system in which propagation conditions of an uplink channel and a downlink channel for an access link of cell are different, provides that when a cell is deleted from the active set based on a request of a base station which has detected a degraded signal of the uplink channel, a predetermined period of time is to be counted for inhibiting addition of the same cell in the active set based on a request of a mobile terminal which has detected a satisfied signal of the downlink channel, thereby preventing the deletion and addition of the cell in the active set from successive operations in a short time.