公开(公告)号：CA2216761C

公开(公告)日：2002-01-01

申请号：CA2216761

申请日：1997-09-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： VALENZUELA REINALDO A ,  KASTURIA SANJAY ,  WRIGHT GREGORY ALAN ,  AVIDOR DAN ,  SIZER THEODORE II

IPC: H04J3/00 ,  H04J3/16 ,  H04W16/10 ,  H04W16/28 ,  H04W84/14 ,  H04Q7/38 ,  H04B15/00

Abstract: A time-division-multiplexed fixed wireless loop system and methods therefor are disclosed. The system comprises a plurality of cells each having a base station and a plurality of terminals. The base station includes a steerable and adjustab le multibeam antenna for communicating with each of the terminals, which have f ixedantennas. A cell controller associated with each bas e station allocates communication time slots so as to minimize mutual interference between base station/termin al links sharing the same slot. Slot assignment is based on regional, periodically up dateinterference measurements that are stored in data ba ses.

公开(公告)号：CA2216675C

公开(公告)日：2001-11-20

申请号：CA2216675

申请日：1997-09-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： VALENZUELA REINALDO A ,  AVIDOR DAN ,  KASTURIA SANJAY ,  WRIGHT GREGORY ALAN ,  SIZER THEODORE II

IPC: H01Q3/26 ,  H04B7/00 ,  H04B7/26 ,  H04W16/28 ,  H04W72/08 ,  H04W84/14 ,  H04Q7/36 ,  H04B15/00 ,  H04Q7/38

Abstract: A time-division-multiplexed fixed wireless loop system and methods therefor are disclosed. The system comprises a plurality of cells each having a base station and a plurality of terminals. The base station includes a steerable and adjusta ble multibeam antenna for communicating with each of the terminals, which have f ixedantennas. A cell controller associated with each ba se station allocates communication time slots so as to minimize mutual interference between base station/termin al links sharing the same time slot. Slot assignment is based on regional, periodica lly updated interference measurements that are stored in data bases.

公开(公告)号：BR0006751A

公开(公告)日：2001-08-07

申请号：BR0006751

申请日：2000-01-27

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KASTURIA SANJAY

IPC: H04J13/16 ,  H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04B7/216

Abstract: A system and a method for code division multiple access (CDMA) communication. The system (11) includes fixed terminals (13) communicating with a central base station (12). The terminals in protection sectors (14-21) of each sector (1 to 4) are configured to employ codes from different sets of codes to overcome potential mutual interference between sectors on account of antenna radiation pattern roll-off. The remaining codes, preferably the majority of the available codes, are used in any one of a plurality of basic sectors (22-25), each of which separates the protection sectors of a respective sector. For an even number of sectors in a cell, the available codes are partitioned into three groups, two for the protection sectors and one for the basic sectors. For an odd number of sectors in a cell, the available codes are partitioned into four groups, three for the protection sectors and one for the basic sectors. Protection sectors are relatively narrow but broad enough to counteract the potential mutual interference between sectors.

公开(公告)号：CA2228919A1

公开(公告)日：1998-09-27

申请号：CA2228919

申请日：1998-02-05

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HABBAB ISAM M I ,  KASTURIA SANJAY

IPC: H04L27/22 ,  H04L7/04 ,  H04L27/00 ,  H04L27/233 ,  H04M1/00

Abstract: The along and perpendicular rails of a received signal (e.g., modulated usin g multi-phase shift keying) are rotated to compensate for frequency offsets be tween the carrier frequency of the received signal and the reference frequency of the local os cillator. The rotation angles are updated, based on the rotated along rail, during dotting sequence s in the received signal. In one implementation, the dotting sequences are detected based on t he rotate perpendicular rail. The beginnings of dotting sequences are detected by thre sholding the average on the perpendicular rail and the ends of dotting sequences are detected by analyzing the encoded data for non-dotting-sequence values. In a cordless phone application, diffe rent dotting sequences may be used to distinguish base-to-handset transmissions from hand set-to-base transmissions.

公开(公告)号：CA2216761A1

公开(公告)日：1998-05-08

申请号：CA2216761

申请日：1997-09-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KASTURIA SANJAY ,  SIZER THEODORE II ,  VALENZUELA REINALDO A ,  AVIDOR DAN ,  WRIGHT GREGORY ALAN

IPC: H04J3/00 ,  H04J3/16 ,  H04W16/10 ,  H04W16/28 ,  H04W84/14 ,  H04Q7/38 ,  H04B15/00

Abstract: A time-division-multiplexed fixed wireless loop system and methods therefor are disclosed. The system comprises a plurality of cells each having a base stat ion and a plurality of terminals. The base station includes a steerable and adjustable multibeam antenna for communicating with each of the terminals, which have fixed antennas. A cell controller associated with each base station allocates communic ation time slots so as to minimize mutual interference between base station/terminal l inks sharing the same slot. Slot assignment is based on regional, periodically update interference measurements that are stored in data bases.

公开(公告)号：CA2216675A1

公开(公告)日：1998-05-08

申请号：CA2216675

申请日：1997-09-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SIZER THEODORE II ,  KASTURIA SANJAY ,  WRIGHT GREGORY ALAN ,  AVIDOR DAN ,  VALENZUELA REINALDO A

IPC: H01Q3/26 ,  H04B7/00 ,  H04B7/26 ,  H04W16/28 ,  H04W72/08 ,  H04W84/14 ,  H04Q7/36 ,  H04B15/00 ,  H04Q7/38

Abstract: A time-division-multiplexed fixed wireless loop system and methods therefor are disclosed. The system comprises a plurality of cells each having a base station and a plurality of terminals. The base station includes a steerable and adjusta ble multibeam antenna for communicating with each of the terminals, which have f ixedantennas. A cell controller associated with each ba se station allocates communication time slots so as to minimize mutual interference between base station/termin al links sharing the same time slot. Slot assignment is based on regional, periodica lly updated interference measurements that are stored in data bases.

公开(公告)号：CA2215607C

公开(公告)日：2001-08-21

申请号：CA2215607

申请日：1997-09-16

Applicant: LUCENT TECHNOLOGIES INC

Inventor： WRIGHT GREGORY ALAN ,  VALENZUELA REINALDO A ,  KASTURIA SANJAY ,  AVIDOR DAN ,  SIZER THEODORE II

IPC: H04J3/16 ,  H01Q1/24 ,  H01Q3/26 ,  H04B7/00 ,  H04W16/14 ,  H04W16/28 ,  H04W24/00 ,  H04W72/08 ,  H04W76/02 ,  H04W84/14 ,  H04B15/00 ,  H04Q7/20

Abstract: TDM-BASED FIXED WIRELESS LOOP SYSTEM A time-division-multiplexed fixed wireless loop system and methods therefor are disclosed. The system comprises a plurality of cells each having a base station and a plurality of terminals. The base station includes a steerable and adjustab le multibeam antenna for communicating with each of the terminals, which have f ixedantennas. A cell controller associated with each bas e station allocates communication time slots so as to minimize mutual interference between base station/termin al links sharing the same time slot. Slot assignment is based on regional, periodical ly updated interference measurements that are stored in data bases.

公开(公告)号：AU1487200A

公开(公告)日：2000-08-10

申请号：AU1487200

申请日：2000-02-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KASTURIA SANJAY

IPC: H04J13/16 ,  H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04B7/216

Abstract: A system and a method for code division multiple access (CDMA) communication. The system (11) includes fixed terminals (13) communicating with a central base station (12). The terminals in protection sectors (14-21) of each sector (1 to 4) are configured to employ codes from different sets of codes to overcome potential mutual interference between sectors on account of antenna radiation pattern roll-off. The remaining codes, preferably the majority of the available codes, are used in any one of a plurality of basic sectors (22-25), each of which separates the protection sectors of a respective sector. For an even number of sectors in a cell, the available codes are partitioned into three groups, two for the protection sectors and one for the basic sectors. For an odd number of sectors in a cell, the available codes are partitioned into four groups, three for the protection sectors and one for the basic sectors. Protection sectors are relatively narrow but broad enough to counteract the potential mutual interference between sectors.

公开(公告)号：CA2296947A1

公开(公告)日：2000-08-04

申请号：CA2296947

申请日：2000-01-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KASTURIA SANJAY

IPC: H04J13/16 ,  H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04Q7/36

Abstract: A system and a method for code division multiple access (CDMA) communication. The system includes fixed terminals communicating with a central base station. The terminals in protection sectors of each sector are configured to employ codes from different sets of codes to overcome potential mutual interference between sectors on account of antenna radiation pattern roll-off. The remaining codes; preferably the majority of the available codes, are used in any one of a plurality of basic sectors, each of which separates the protection sectors of a respective sector. For an even number of sectors in a cell, the available codes are partitioned into three groups, two for the protection sectors and one for the basic sectors. For an odd number of sectors in a cell, the available codes are partitioned into four groups, three for the protection sectors and one for the basic sectors. Protection sectors are relatively narrow but broad enough to counteract the potential mutual interference between sectors.