Title:
移動無線通信端末及び移動無線通信システム
Document Type and Number:
Japanese Patent JP4539906
Kind Code:
B2
Abstract:
Receiving sensitivity deterioration in wireless communication due to a spurious radiation wave generated from a card reader/writer is suppressed, in a case where a mobile phone terminal is provided with a contactless IC card reader/writer or a contactless IC card. The mobile phone terminal provided with the contactless IC card reader/writer performs measurement of a wireless status upon reception (step S1) and transmission power wetting (step S2), and when an instruction to start a reader/writer function is inputted from a user (step S3), wireless status deterioration due to spurious radiation from the reader/writer is predicted (step S4). Then, the mobile phone terminal judges whether control to reduce the transmission speed is necessary or not, on the basis of a value of the deterioration predicted wireless status (step S5), and when judged necessary, the transmission speed is reduced (step S6).
Inventors:
Mizusawa Nishiki
Nagano Tomonori
Nagano Tomonori
Application Number:
JP2004203033A
Publication Date:
September 08, 2010
Filing Date:
July 09, 2004
Export Citation:
Assignee:
Sony Ericsson Mobile Communications Inc.
International Classes:
H04W84/10; H04B1/59; H04W16/14; H04W28/22; H04W52/24; H04W88/06
Domestic Patent References:
| JP6505108A | ||||
| JP2003150916A |
Attorney, Agent or Firm:
Naruo Matoba
Atsuro Sasaki
Atsuro Sasaki