公开(公告)号：DE69131096D1

公开(公告)日：1999-05-12

申请号：DE69131096

申请日：1991-10-30

Applicant: MOTOROLA INC

Inventor： CARNEY SCOTT

IPC: H04W36/32 ,  H04W64/00 ,  H04Q7/20 ,  H04B7/26

Abstract: A method and system are set forth for providing dynamic RF communication resources to a mobile unit as that mobile unit changes geographic areas such that RF communication resource use by that mobile unit is generally not forcibly terminated as that mobile unit roves to a geographical area not served by the RF communication resource where the mobile unit is presently located.

公开(公告)号：DE69030185D1

公开(公告)日：1997-04-17

申请号：DE69030185

申请日：1990-06-22

Applicant: MOTOROLA INC

Inventor： LEVINE STEPHEN ,  PUHL LARRY ,  CARNEY SCOTT ,  GOODE STEVEN

IPC: H04B7/005 ,  H04B7/26 ,  H04J3/00 ,  H04J3/16 ,  H04L7/00 ,  H04M11/00 ,  H04W56/00 ,  H04Q7/00 ,  H04Q9/00 ,  H04B7/212

Abstract: In a Time Division Multiple Access (TDMA) cellular system, there is provided a mechanism for synchronization and equalization comprising: providing synchronization information (S/S) sufficiently removed from the start of a TDM slot so as to maintain the integrity of that synchronization information (S/S) at adjacent cells and providing that synchronization information (S/S) not so far removed from the start of the slot as to necessitate adaptive equalization of information preceding the synchronization information (S/S) for sufficiently reliable recovery. The equalization is further enhanced by providing, roughly midway between the synchronization information (S/S) and the end of the slot, additional information (CC) upon which equalization may retrain. Accordingly, equalizers perform retrospective, non-adaptive equalization of information preceding the synchronization information (S/S), perform adaptive equalization of information following that synchronization information (S/S), and retrain utilizing known bit-sequences elsewhere within the TDM slot; the additional information (CC) comprises known bit-sequences identifying cells.

公开(公告)号：DE69131096T2

公开(公告)日：1999-11-11

申请号：DE69131096

申请日：1991-10-30

Applicant: MOTOROLA INC

Inventor： CARNEY SCOTT

IPC: H04W36/32 ,  H04W64/00 ,  H04Q7/20 ,  H04B7/26

Abstract: A method and system are set forth for providing dynamic RF communication resources to a mobile unit as that mobile unit changes geographic areas such that RF communication resource use by that mobile unit is generally not forcibly terminated as that mobile unit roves to a geographical area not served by the RF communication resource where the mobile unit is presently located.

公开(公告)号：DE69030185T2

公开(公告)日：1997-09-04

申请号：DE69030185

申请日：1990-06-22

Applicant: MOTOROLA INC

Inventor： LEVINE STEPHEN ,  PUHL LARRY ,  CARNEY SCOTT ,  GOODE STEVEN

IPC: H04B7/005 ,  H04B7/26 ,  H04J3/00 ,  H04J3/16 ,  H04L7/00 ,  H04M11/00 ,  H04W56/00 ,  H04Q7/00 ,  H04Q9/00 ,  H04B7/212

Abstract: In a Time Division Multiple Access (TDMA) cellular system, there is provided a mechanism for synchronization and equalization comprising: providing synchronization information (S/S) sufficiently removed from the start of a TDM slot so as to maintain the integrity of that synchronization information (S/S) at adjacent cells and providing that synchronization information (S/S) not so far removed from the start of the slot as to necessitate adaptive equalization of information preceding the synchronization information (S/S) for sufficiently reliable recovery. The equalization is further enhanced by providing, roughly midway between the synchronization information (S/S) and the end of the slot, additional information (CC) upon which equalization may retrain. Accordingly, equalizers perform retrospective, non-adaptive equalization of information preceding the synchronization information (S/S), perform adaptive equalization of information following that synchronization information (S/S), and retrain utilizing known bit-sequences elsewhere within the TDM slot; the additional information (CC) comprises known bit-sequences identifying cells.