公开(公告)号：EP0979584B1

公开(公告)日：2005-09-28

申请号：EP98919899.9

申请日：1998-04-29

Applicant: QUALCOMM INCORPORATED

Inventor： BENDER, Paul, E. ,  ZIV, Toni, L. ,  KARMI, Gadi ,  LEE, Kuo-Chun ,  LUEDER, Suzanne, M. ,  MOHANTY, Bibhu, P. ,  OTTINGER, Robert, C. ,  QUICK, Roy, F. ,  STACHWICK, Steven, P. ,  SUTTON, Todd ,  TANGIRALA, Venkat ,  ZIV, Noam, A.

IPC: H04Q7/38

CPC classification number: H04W36/22 ,  H04W36/14 ,  H04W36/18

公开(公告)号：EP0979584A1

公开(公告)日：2000-02-16

申请号：EP98919899.9

申请日：1998-04-29

Applicant: QUALCOMM INCORPORATED

Inventor： BENDER, Paul, E. ,  ZIV, Toni, L. ,  KARMI, Gadi ,  LEE, Kuo-Chun ,  LUEDER, Suzanne, M. ,  MOHANTY, Bibhu, P. ,  OTTINGER, Robert, C. ,  QUICK, Roy, F. ,  STACHWICK, Steven, P. ,  SUTTON, Todd ,  TANGIRALA, Venkat ,  ZIV, Noam, A.

IPC: H04Q7/38

CPC classification number: H04W36/22 ,  H04W36/14 ,  H04W36/18

Abstract: A method and apparatus for operating a cellular telephone system that supports performing an inter-system soft handoff is described. A subscriber unit (20) generates a pilot strength measurement report when the pilot channel from a base station (22A...22D) is detected. When a base station controller (24A, 24B) receiving the pilot strength measurement report determines that the base station (24A, 24B) is part of a second cellular telephone system, an inter-system soft handoff request is generated. An admission control subsystem (44) receives the inter-system soft handoff and either grants or denies the request based on the traffic level with the second cellular telephone system. The traffic level may be determined based on link load messages received periodically by the admission control subsystem (44) that are generated by an interface port (32f) coupled to an interconnect (46) between the first cellular telephone system and the second cellular telephone system. The link load message includes peak queue length and average frame rate information.