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:
Jul. 24, 2012
Filed:
Jul. 18, 2008
Rumiko Hayashi, Kawasaki, JP;
Shiro Mazawa, Fujisawa, JP;
Toshiyuki Saito, Kyotanabe, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A hand-off control method (FIG.) for suppressing reverse radio wave interference between radio access terminals and for accelerating hand-off, in which when a base station of greatest forward reception power has changed from a BTSto a BTSin a forward link, the radio access terminal (AT) alters the ID of a designated communication-destination base station to the BTSin an R-CQICH transmitted cyclically, and it makes a hand-off request after having increased transmission power of the R-CQICH a fixed quantity (-). The BTSdoes not transmit an FLAB and data. The BTSreceives the R-CQICH () and succeeds in demodulation, thereby to recognize that the BTShas been designated as the communication-destination base station, and it transmits () an FLAB after execution and completion of a hand-off process. When the AT has received the FLAB () from the designated communication-destination base station BTSit transmits () the R-CQICH in which the communication-destination base station is designated as the BTSin a next R-CQICH transmission cycle, after having returned the transmission power of the R-CQICH ().