公开(公告)号：GB2328845A

公开(公告)日：1999-03-03

申请号：GB9718507

申请日：1997-09-02

Applicant: MOTOROLA INC

Inventor： SHAHAF MARK ,  MERIIN MICHAEL ,  ZEHNGUT LLAN

IPC: H04W48/20 ,  H04Q7/38

Abstract: A communication unit (e.g. mobile radio) stores in its memory a first set of base stations and a second set of base stations (and their corresponding control channels). To establish a communication link (or re-establish a failed link) the unit sequentially attempts to establish contact with base stations from the first set. At preset time intervals these attempts are interrupted in order to attempt to contact base stations in the second set. If no link is established during this interruption the unit returns to making attempts to contact base stations from the first set. The first set may comprise all base stations in the communication system. The second set may include base stations most recently used, or the last used base station together with its nearest neighbours. In a preliminary step the communication unit may attempt to contact base stations in the second set prior to the above method. The sets may be prioritised in many ways, for example according to a signal quality measurement, history of usage or location. The timing of interruptions may depend on the priority of each base station. More than two sets may be used with different interrupt times.

公开(公告)号：GB2328845B

公开(公告)日：2002-06-19

申请号：GB9718507

申请日：1997-09-02

Applicant: MOTOROLA INC

Inventor： SHAHAF MARK ,  MERIIN MICHAEL ,  ZEHNGUT ILAN

IPC: H04W48/20 ,  H04Q7/38