公开(公告)号：HK1023676A1

公开(公告)日：2000-09-15

申请号：HK00102368

申请日：2000-04-19

Applicant: QUALCOMM INC

Inventor： LINDSAY WEAVER ,  DAVID MUNSINGER ,  ROBERTO PADOVANI ,  NOAM ZIV ,  GADI KARMI ,  KLEIN GILHOUSEN

IPC: H04W36/14 ,  H04W24/02

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：HK1015216A1

公开(公告)日：1999-10-08

申请号：HK98116170

申请日：1998-12-28

Applicant: QUALCOMM INC

Inventor： KLEIN GILHOUSEN ,  ROBERTO PADOVANI ,  LINDSAY WEAVER

IPC: H04B7/005 ,  H04B7/04 ,  H04B7/216 ,  H04B7/26 ,  H04W16/24 ,  H04W36/06 ,  H04W36/18 ,  H04W52/00 ,  H04W52/14 ,  H04W52/40

Abstract: A method and apparatus providing softer handoff of a mobile unit (90) between sectors (50, 70, and 80) of a common base station (60). A sectorized base station (60) comprises a set of demodulation elements (240A - 204N). Each demodulation element (240A - 204N) may be assigned to a signal from one of a plurality of sectors. The output of the demodulators (240A - 204N) are combined before the decoding process independent of the sector from which the data originated. This configuration provides improved output data reliability, more stable power control, and more efficient use of resources at the base station.