公开(公告)号：JP2001309448A

公开(公告)日：2001-11-02

申请号：JP2001073064

申请日：2001-03-14

Applicant: IBM

Inventor： SMITH GORDON JAMES ,  GEORGE WILLARD VAN LOEWEN

IPC: H04W4/02 ,  H04W76/06 ,  H04Q7/38 ,  H04Q7/22 ,  H04Q7/28

Abstract: PROBLEM TO BE SOLVED: To provide a method and system that optimizes a call in the vicinity of a wireless dead zone in mobile communication. SOLUTION: When a mobile unit (301) approaches a communication dead zone (304), the call of the mobile unit (301) is automatically interrupted in a proper mode (305). When the mobile unit (301) goes out of the communication dead zone (304), the speech can be reconnected automatically (306). In order to inform the mobile unit (301) that the mobile unit (301) approaches the dead zone (304), at least one of an audible message, a visual message and a contact stimulus as part of the proper automatic interruption is given to the mobile unit (301) and an opposite party of the call. Furthermore, this message can instruct at least either of a time, when the mobile unit (301) goes out of the dead zone (304) and an action which should be taken at that time. Similarly when the mobile unit (301) is going to go out of the dead zone (304), the instruction denoting it is given to the mobile unit (301) and its opposite party of the call prior to the reconnection.