公开(公告)号：EP0963643B1

公开(公告)日：2006-09-20

申请号：EP98903536.5

申请日：1998-01-20

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  SCHULER, Joseph

IPC: H04L27/04 ,  H04L27/12 ,  H04L27/20 ,  H04N7/12 ,  B29C57/00 ,  H04L27/34 ,  H04L5/06

CPC classification number: H04L5/06 ,  H04L27/3411

Abstract: A communication system receives and codes a plurality of information signals according to coding assignments to produce a plurality of coded baseband signals. From these signals, a simulated composite carrier signal is formed which has all the characteristics of an actual composite carrier signal which would have resulted if the plurality of coded baseband signals had been formed. The simulated composite carrier signal is analyzed to determine its peak-to-average ratio. The communication system selects a different coding assignment for coding the plurality of information signals if, based on the determined peak-to-average ratio and a selection criteria, the coding assignment does not produce the desired results. The communication system selects a different coding assignment until at least one or several desired coding techniques have been identified, ranks the coding techniques and makes a final selection of the coding techniques to meet the peak-to-average ratio requirements.

公开(公告)号：EP0824843B1

公开(公告)日：2006-07-26

申请号：EP96943761.5

申请日：1996-12-13

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  SCHAEFFER, Dennis, R. ,  CSAPO, John, S. ,  THOMPSON, Dennis, J. ,  SPEAR, Stephen, L.

IPC: H04Q7/38

CPC classification number: H04W36/04

Abstract: A wireless communication system (200, 300, 400, 500) mitigates the effects of excess timing delay caused by varying lengths of communication paths. In one general implementation, a transition communication path (206, 323, 329) is used to transfer a time-advanced version of a timing reference signal so that the cumulative time delay at a transition cell (209, 325, 331) is reduced. In another general implementation, the timing reference signal is time-advanced in all communication paths (403-411), and selected communication paths (403-407) include a time delay means (423-427, 503-507) such that the cumulative time delay at an area (421) near a target coverage area (130) is reduced. By reducing the cumulative time delay at the area (421) near the target coverage area (130), a hand-off of a communication of a mobile station (128) into the target coverage area (130) can be performed.

公开(公告)号：EP1554820A2

公开(公告)日：2005-07-20

申请号：EP03774744.1

申请日：2003-10-09

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D.

IPC: H04B7/212

CPC classification number: H04W28/16

Abstract: A method and apparatus dynamically assigns each of a plurality of different information streams associated with one wireless communication unit (12a), to independent communication resources from different communication resource pools from each of a plurality of different wireless network elements (14a-14n), based on, for example, quality of service requirement data determined for each of the information streams. As such, the wireless communication unit (12a) may establish two or more separate links using two or more completely independent radio resources from different wireless base stations in the same system.

公开(公告)号：EP0818090B1

公开(公告)日：2004-10-20

申请号：EP96944761.4

申请日：1996-11-12

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  BONTA, Jeffrey, D.

IPC: H04B15/00 ,  H04Q7/38

CPC classification number: H04W36/26

公开(公告)号：EP0770312B1

公开(公告)日：2003-08-06

申请号：EP96911702.7

申请日：1996-04-10

Applicant: MOTOROLA, INC.

Inventor： SCHMIDT, Chris ,  KOTZIN, Michael, D. ,  MENICH, Berry, J. ,  BRUCKERT, Eugene, J.

IPC: H04Q7/22

CPC classification number: H04W36/12 ,  H04W36/18

Abstract: A method of communication handover from a first communication entity (33) to a second communication entity (43) in a communication system (10) where a communication unit (80), communicating with a transceiver (23) associated with the second communication entity, is linked to the first communication entity. The invention provides for establishing a communication link between the communication unit and the second communication entity while maintaining a communication link between the communication unit and the first communication entity. Then, communications are substantially simultaneously transferred to the second communication entity while terminated from the first communication entity.

公开(公告)号：EP0963643A2

公开(公告)日：1999-12-15

申请号：EP98903536.0

申请日：1998-01-20

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  SCHULER, Joseph

IPC: H04L27 ,  H04J1 ,  H04L5

CPC classification number: H04L5/06 ,  H04L27/3411

Abstract: A communication system (106) receives and codes a plurality of information signals (102-105) according to coding assignments to produce a plurality of coded baseband signals (202-205). From these signals, a simulated composite carrier signal is formed which has all the characteristics of an actual composite carrier signal which would have resulted if the plurality of coded baseband signals had been formed. The simulated composite carrier signal is analyzed to determine its peak-to-average ratio. The communication system (106) selects a different coding assignment for coding the plurality of information signals if, based on the determined peak-to-average ratio and a selection criteria, the coding assignment does not produce the desired results. The communication system (106) selects a different coding assignment until at least one or several desired coding techniques have been identified, ranks the coding techniques and makes a final selection of the coding techniques to meet the peak-to-average ratio requirements.

公开(公告)号：EP0845177A1

公开(公告)日：1998-06-03

申请号：EP97905976.0

申请日：1997-02-13

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  FLEMING, Philip, J. ,  STOLYAR, Aleksandr, L.

IPC: H04J13 ,  H04W28 ,  H04W36

CPC classification number: H04W28/26 ,  H04W36/08 ,  H04W36/20

Abstract: To mitigate the adverse effects of the load imbalance phenomenon prevalent in spread spectrum, multi-carrier wireless communication systems, the system beneficially employs the use of handoff as a means for balancing the call traffic (commonly referred to as 'load') among a plurality of carriers within the communication system. The multi-carrier wireless communication system monitors (214) a plurality of metrics corresponding to the loading of each of the plurality of carriers in the communication system and, based upon the metrics, will handoff (220) call traffic to and between the plurality of carriers, thereby mitigating the adverse effects associated with the load imbalance, in accordance with the invention.

公开(公告)号：EP0824843A1

公开(公告)日：1998-02-25

申请号：EP96943761.0

申请日：1996-12-13

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  SCHAEFFER, Dennis, R. ,  CSAPO, John, S. ,  THOMPSON, Dennis, J. ,  SPEAR, Stephen, L.

IPC: H04B7 ,  H04W36

CPC classification number: H04W36/04

Abstract: A wireless communication system (200, 300, 400, 500) mitigates the effects of excess timing delay caused by varying lengths of communication paths. In one general implementation, a transition communication path (206, 323, 329) is used to transfer a time-advanced version of a timing reference signal so that the cumulative time delay at a transition cell (209, 325, 331) is reduced. In another general implementation, the timing reference signal is time-advanced in all communication paths (403-411), and selected communication paths (403-407) include a time delay means (423-427, 503-507) such that the cumulative time delay at an area (421) near a target coverage area (130) is reduced. By reducing the cumulative time delay at the area (421) near the target coverage area (130), a hand-off of a communication of a mobile station (128) into the target coverage area (130) can be performed.

公开(公告)号：EP0770312A1

公开(公告)日：1997-05-02

申请号：EP96911702.0

申请日：1996-04-10

Applicant: MOTOROLA, INC.

Inventor： SCHMIDT, Chris ,  KOTZIN, Michael, D. ,  MENICH, Berry, J. ,  BRUCKERT, Eugene, J.

IPC: H04J13 ,  H04B7 ,  H04W36

CPC classification number: H04W36/12 ,  H04W36/18

Abstract: A method of communication handover from a first communication entity (33) to a second communication entity (43) in a communication system (10) where a communication unit (80), communicating with a transceiver (23) associated with the second communication entity, is linked to the first communication entity. The invention provides for establishing a communication link between the communication unit and the second communication entity while maintaining a communication link between the communication unit and the first communication entity. Then, communications are substantially simultaneously transferred to the second communication entity while terminated from the first communication entity.

公开(公告)号：EP0714575A1

公开(公告)日：1996-06-05

申请号：EP94932120.0

申请日：1994-10-31

Applicant: MOTOROLA, INC.

Inventor： SCHAFFNER, Terry, Michael ,  KOTZIN, Michael, D. ,  VAN DEN HEUVEL, Anthony, P.

IPC: H04L27 ,  H04B1 ,  H04J13 ,  H04L1 ,  H04L5

CPC classification number: H04B1/707 ,  H04L1/00 ,  H04L5/12

Abstract: A method and apparatus is provided for creating a composite waveform. This composite waveform is created by coding a plurality of input digital information signals (201). Subsequently, the plurality of coded input digital information signals (231, 235, 237) are communicated over a communication medium (103) to a digital combiner (105). The digital combiner (105) combines the plurality of coded input digital information signals. Finally, the digitally combined information signal is spectrally shaped to form a composite waveform (107). These composite waveform creation principals may be applied to digitally encoded voice subbands in a subband coding system as well as channel information in a direct sequence code division multiple access (DS-CDMA) communication system transmitter.