公开(公告)号：JPH09215044A

公开(公告)日：1997-08-15

申请号：JP28400896

申请日：1996-10-25

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： PATORITSUKU PINAADO ,  FUREDERITSUKU HAIMAN

IPC: G06K7/00 ,  G06K17/00 ,  H04B1/707 ,  H04B1/713 ,  H04B1/7156 ,  H04L5/14 ,  H04L12/28 ,  H04L12/56 ,  H04W48/16 ,  H04W48/20 ,  H04W84/12 ,  H04W88/06 ,  H04Q7/34 ,  H04Q7/22 ,  H04Q7/28

Abstract: PROBLEM TO BE SOLVED: To provide a communication system for improving the selection of an access point to be communicated by a mobile unit. SOLUTION: A communication network provided with a cellular local area radio network is provided with plural access points 5 connected to a house computer 4 and connected one and another and plural mobile units 2, and each mobile unit 2 can communicate with the access point. The mobile unit 2 can scan and identify the access point optimum for communication from the optimum quality and loading factor of signal strength. Adjacently to an exit, the access point having a directional antenna is positioned in order to identify the time when the mobile unit 2 gets out of a prescribed area, and when the mobile unit 2 gets closer, it is detected.