公开(公告)号：FI982520A

公开(公告)日：1999-01-22

申请号：FI982520

申请日：1998-11-20

Applicant: QUALCOMM INC

Inventor： WEAWER JR LINSAY A ,  MUNSINGER DAVID B ,  PADOVANI ROBERTO ,  ZIV NOAM A ,  KARMI GADI ,  GILHOUSEN KLEIN S

IPC: H04W36/14 ,  H04W24/02 ,  H04Q

Abstract: The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.

公开(公告)号：FI982520A0

公开(公告)日：1998-11-20

申请号：FI982520

申请日：1998-11-20

Applicant: QUALCOMM INC

Inventor： WEAWER JR LINSAY A ,  MUNSINGER DAVID B ,  PADOVANI ROBERTO ,  ZIV NOAM A ,  KARMI GADI ,  GILHOUSEN KLEIN S

IPC: H04W36/14 ,  H04W24/02 ,  H04Q

Abstract: The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.