公开(公告)号：BR9707061A

公开(公告)日：1999-07-20

申请号：BR9707061

申请日：1997-01-24

Applicant: ERICSSON TELEFON AB L M

Inventor： ENEROTH LARS GOERAN VILHELM ,  NAESMAN KARL ANDERS ,  PETERSEN LARS-GOERAN

IPC: H04L20060101 ,  H04L45/125 ,  H04L47/43 ,  H04L49/111 ,  H04Q11/04 ,  H04W28/06 ,  H04W92/02 ,  H04L12/56

Abstract: The method to indicate the size of a mini cell in a mobile telephone communications system involves providing a cell size indicator in the header of the mini cell. The cell length indicator is a short fixed length field which is non-linearly coded. Preferably, the cell size indicator includes an extension bit provided in the fixed size length field. The extension bit, if set, indicates that a further fixed size length field follows the fixed size length field in the header. The length indicator includes a predefined code which, if present, indicates that a further fixed size length field follows the fixed size length field in the header.

公开(公告)号：CA2293813A1

公开(公告)日：1998-12-17

申请号：CA2293813

申请日：1998-05-29

Applicant: ERICSSON TELEFON AB L M

Inventor： NAESMAN KARL ANDERS ,  WILLARS PER HANS AKE

IPC: H04B7/26 ,  H04J3/06 ,  H04J13/00 ,  H04L7/08 ,  H04W36/18 ,  H04W56/00 ,  H04Q7/20 ,  H04Q7/38

Abstract: The present invention relates to a method and an arrangement for synchronising communication of framed data via asynchronous base stations (BS1, BS2) in a cellular communications system, e.g. a CDMA system. The synchronisation method is performed continuously by sending out certain system frame counter states from a central node in the system to all its connected base stations (BS1, BS2). Each base station (BS1, BS2) comprises a local frame counter (LFCBS1; LFCBS2), which generates local frame counter states (t1(1)-t1(4); t2(1)-t2(4)) correlated to the the system frame counter states. Transmission of information via the base stations (BS1, BS2) is synchronised by assigning each data frame (DF(1)-DF(4)) a particular frame number, which is given by the local frame counter states (t1(1)-t1(4); t2(1)-t2(4)), so that data frames (DF(1)-DF(4)) having identical numbers contain copies of a certain data packet. Correct frame numbers are derived from common downlink channel offset measurements (CCO1; CCO2) carried out in the base stations (BS1, BS2), and timing advance values (TA2) and downlink channel offsets (DCO1; DCO2) calculated in the central node.

公开(公告)号：SE509836C2

公开(公告)日：1999-03-15

申请号：SE9702273

申请日：1997-06-13

Applicant: ERICSSON TELEFON AB L M

Inventor： WILLARS PER HANS AAKE ,  NAESMAN KARL ANDERS

IPC: H04B7/26 ,  H04J3/06 ,  H04J13/00 ,  H04L7/08 ,  H04W36/18 ,  H04W56/00 ,  H04Q7/38

Abstract: The present invention relates to a method and an arrangement for synchronising communication of framed data via asynchronous base stations (BS1, BS2) in a cellular communications system, e.g. a CDMA-system. The synchronisation method is performed continuously by sending out certain system frame counter states from a central node in the system to all its connected base stations (BS1, BS2). Each base station (BS1, BS2) comprises a local frame counter (LFCBS1; LFCBS2), which generates local frame counter states (t1(1)-t1(4); t2(1)-t2(4)) correlated to the system frame counter states. Transmission of information via the base stations (BS1, BS2) is synchronised by assigning each data frame (DF(1)-DF(4)) a particular frame number, which is given by the local frame counter states (t1(1)-t1(4); t2(1)-t2(4)), so that data frames (DF(1)-DF(4)) having identical numbers are contain copies of a certain data packet. Correct frame numbers are derived from common downlink channel offset measurements (CCO1; CCO2) carried out in the base stations (BS1, BS2), and timing advance values (TA2) and downlink channel offsets (DCO1; DCO2) calculated in the central node.

公开(公告)号：AT239344T

公开(公告)日：2003-05-15

申请号：AT00953185

申请日：2000-08-18

Applicant: ERICSSON TELEFON AB L M

Inventor： PETERSSON JUSTUS ,  NAESMAN KARL ANDERS ,  MUELLER WALTER GERHARD ALOIS

IPC: H04B7/005 ,  H04W36/06 ,  H04W36/12 ,  H04W36/30 ,  H04W52/40 ,  H04W52/44 ,  H04Q7/38

Abstract: In a mobile communication system (T1) a time interval selection means (TIFM) in a network control means (RNC) determines a time interval and sends an indication about this time interval to a subscriber station (MS) in a time interval indication signal. A time interval signal determining means (TIFDM) in the subscriber station (MS) detects the time interval and an IF measurement means (IFMM) carries out inter-frequency/inter-system measurements in the detected time interval specified by the network control means (RNC). In this time interval the temporary reduction of the quality of service QoS on the communication connection (CC) is planed by the network control means (RNC). However, independent as to whether a delay-sensitive or loss-sensitive data transmission is carried out, the network control means (RNC) can make provisions in order to compensate the temporary reduction of the quality of service. Such procedure is superior to performing IF measurements in an idle time interval of a compressed time slot in which a temporary degradation of the quality of service must always be accepted due to a compressed mode of operation.

公开(公告)号：SE9702273L

公开(公告)日：1998-12-14

申请号：SE9702273

申请日：1997-06-13

Applicant: ERICSSON TELEFON AB L M

Inventor： WILLARS PER HANS AAKE ,  NAESMAN KARL ANDERS

IPC: H04B7/26 ,  H04J3/06 ,  H04J13/00 ,  H04L7/08 ,  H04W36/18 ,  H04W56/00 ,  H04Q7/38

Abstract: The present invention relates to a method and an arrangement for synchronising communication of framed data via asynchronous base stations (BS1, BS2) in a cellular communications system, e.g. a CDMA-system. The synchronisation method is performed continuously by sending out certain system frame counter states from a central node in the system to all its connected base stations (BS1, BS2). Each base station (BS1, BS2) comprises a local frame counter (LFCBS1; LFCBS2), which generates local frame counter states (t1(1)-t1(4); t2(1)-t2(4)) correlated to the system frame counter states. Transmission of information via the base stations (BS1, BS2) is synchronised by assigning each data frame (DF(1)-DF(4)) a particular frame number, which is given by the local frame counter states (t1(1)-t1(4); t2(1)-t2(4)), so that data frames (DF(1)-DF(4)) having identical numbers are contain copies of a certain data packet. Correct frame numbers are derived from common downlink channel offset measurements (CCO1; CCO2) carried out in the base stations (BS1, BS2), and timing advance values (TA2) and downlink channel offsets (DCO1; DCO2) calculated in the central node.

公开(公告)号：SE9702273D0

公开(公告)日：1997-06-13

申请号：SE9702273

申请日：1997-06-13

Applicant: ERICSSON TELEFON AB L M

Inventor： WILLARS PER HANS AAKE ,  NAESMAN KARL ANDERS

IPC: H04B7/26 ,  H04J3/06 ,  H04J13/00 ,  H04L7/08 ,  H04W36/18 ,  H04W56/00 ,  H04Q

Abstract: The present invention relates to a method and an arrangement for synchronising communication of framed data via asynchronous base stations (BS1, BS2) in a cellular communications system, e.g. a CDMA-system. The synchronisation method is performed continuously by sending out certain system frame counter states from a central node in the system to all its connected base stations (BS1, BS2). Each base station (BS1, BS2) comprises a local frame counter (LFCBS1; LFCBS2), which generates local frame counter states (t1(1)-t1(4); t2(1)-t2(4)) correlated to the system frame counter states. Transmission of information via the base stations (BS1, BS2) is synchronised by assigning each data frame (DF(1)-DF(4)) a particular frame number, which is given by the local frame counter states (t1(1)-t1(4); t2(1)-t2(4)), so that data frames (DF(1)-DF(4)) having identical numbers are contain copies of a certain data packet. Correct frame numbers are derived from common downlink channel offset measurements (CCO1; CCO2) carried out in the base stations (BS1, BS2), and timing advance values (TA2) and downlink channel offsets (DCO1; DCO2) calculated in the central node.