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公开(公告)号:BR0100077A
公开(公告)日:2001-08-28
申请号:BR0100077
申请日:2001-01-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CHENG TERRY SI-FONG , HUANG JOE , MISRA APARAJITA , MURPHY KEVIN JOHN
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公开(公告)号:DE69935362T2
公开(公告)日:2007-11-29
申请号:DE69935362
申请日:1999-03-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor: GRANDHI SUDHEER A , HUANG JOE , KAHN COLIN L , KUMARAN KRISHNAN , ZHANG BULIN B
Abstract: In a cellular system, a new cell measures signal strengths of different channels being used by existing cells. The new cell generates a list of candidate channels corresponding to the channels with the greatest signal strength and transmits the list to the mobile switching center (MSC) of the cellular system. The MSC determines which of the candidate channels correspond to beacons in existing cells and transmits configuration information to the new cell for those corresponding existing cells. In this way, the new cell automatically receives configuration information on its neighbor cells. If the MSC determines that the number of candidate channels that are beacons is too small, the MSC will ask the new cell to transmit additional candidate channels (i.e., those having even lower signal strength).
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公开(公告)号:DE60026457D1
公开(公告)日:2006-05-04
申请号:DE60026457
申请日:2000-07-03
Applicant: LUCENT TECHNOLOGIES INC
Inventor: HUANG CHING YAO , HUANG JOE , WU I-FONG ANTONIO , WU XIAO CHENG , YU BEE YUN
Abstract: Soft handoffs in an IS-95 CDMA system or other wireless communication system are controlled using an enhanced set of soft handoff parameters which allow the system to adapt more readily to changing radio frequency (RF) conditions. In an illustrative embodiment, values for particular ones of the soft handoff parameters are selected in accordance with a set of rules, including rules such as, e.g., select the minimum value of add threshold among the members of an active set of pilots for a given mobile station; select the maximum value of drop threshold among the members of the active set; select the minimum value of drop threshold timer among the members of the active set; and select the minimum value of comparison threshold among the members of the active set. A quality measure is then determined for each of the members of the active set, based on one or more of the selected soft handoff parameter values and values of one or more additional parameters, e.g., add intercept, drop intercept and slope parameters, associated with those members. Particular values of the additional parameters are then selected based on the quality measures. The selected parameter values are then utilized in a soft handoff process, e.g., in a soft handoff process in which the given mobile station is directed to handoff from a primary base station to another base station of the system.
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24.
公开(公告)号:CA2329265C
公开(公告)日:2006-04-11
申请号:CA2329265
申请日:2000-12-20
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CHENG TERRY SI-FONG , HUANG JOE , MURPHY KEVIN JOHN , MISRA APARAJITA
IPC: H04B7/005 , H04L1/00 , H04B1/04 , H04B7/26 , H04J3/00 , H04J3/02 , H04W52/20 , H04W52/24 , H04W52/36
Abstract: A method for controlling downlink power in a time-division multiplex wirele ss system may provide different downlink transmit signal powers to different time-division multiplex channels of a single carrier. A base station receive s a measured signal parameter data for a downlink transmit signal of a time- division multiplex channel. The base station determines an initial adjustment for the downlink transmit signal power of the time division multiplex channel if the measured signal parameter data differs from a target signal parameter data. The base station determines a revised adjustment for the downlink transmit power of the time division multiplex channel based on the initial adjustment and at least one adjustment range as appropriate to achieve synchronization of the demodulation of the downlink transmit signal.
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公开(公告)号:BR0102054A
公开(公告)日:2002-04-23
申请号:BR0102054
申请日:2001-05-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor: GANDHI ASIF D , VITEBSKY STANLEY , IBANEZ MARC BENEDICT , SONG LEI , HUANG JOE , THOMAS MATHEW
Abstract: A method for controlling access of a subscriber station to a wireless communications system facilitates the maintenance of a performance target of the reverse link and desired geographic coverage of the reverse link. The method for controlling access of a subscriber station to a wireless communications system includes measuring a first performance indicator and a second performance indicator for a reverse link associated with a subscriber station seeking access to a wireless communications system. A blocking threshold value is established based upon the measured second performance indicator and may be adjusted to allow more or less blocking based on any additional metrics that characterize the performance of the current subscriber stations. The decision to grant or deny access of the subscriber station to the wireless communications system is determined based on a comparison of the measured first performance indicator to the established blocking threshold value.
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26.
公开(公告)号:AU1368901A
公开(公告)日:2001-07-26
申请号:AU1368901
申请日:2001-01-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CHENG TERRY SI-FONG , HUANG JOE , MISRA APARAJITA , MURPHY KEVIN JOHN
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公开(公告)号:DE69800327T2
公开(公告)日:2001-02-15
申请号:DE69800327
申请日:1998-10-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor: HUANG JOE , KAHN COLIN LEON , LAMOUREUX PHILIP , MURPHY PATRICK MYLES , ZHANG BULIN
Abstract: Sharing the existing sector antennas at the base station each of which corresponds to one sector of the outer communication coverage area to create an omnidirectional inner communication coverage area. When transmitting or receiving data from a mobile in one sector of the outer communication coverage area only one antenna is used, and when transmitting or receiving data from a mobile in the inner communication coverage area all the antennas are used. This allows an increase in capacity of the hybrid inner/outer sectored cell without the additional cost of adding further antennas.
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公开(公告)号:CA2250559A1
公开(公告)日:1999-04-23
申请号:CA2250559
申请日:1998-10-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor: ZHANG BULIN , LAMOUREUX PHILIP , MURPHY MYLES PATRICK , HUANG JOE , KAHN COLIN LEON
Abstract: Sharing the existing sector antennas at the base station each of which corre sponds to one sector of the outer communication coverage area to create an omnidirectional inner communication coverage area. When transmitting or receiving data from a mobi le in one sector of the outer communication coverage area only one antenna is used, and when transmitting or receiving data from a mobile in the inner communication coverage area all th e antennas are used. This allows an increase in capacity of the hybrid inner/outer sectored cell without the additional cost of adding further antennas.
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公开(公告)号:AU4622001A
公开(公告)日:2001-12-06
申请号:AU4622001
申请日:2001-05-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor: GANDHI ASIF D , HUANG JOE , IBANEZ MARC BENEDICT , SONG LEI , THOMAS MATHEW , VITEBSKY STANLEY
Abstract: A method for controlling access of a subscriber station to a wireless communications system facilitates the maintenance of a performance target of the reverse link and desired geographic coverage of the reverse link. The method for controlling access of a subscriber station to a wireless communications system includes measuring a first performance indicator and a second performance indicator for a reverse link associated with a subscriber station seeking access to a wireless communications system. A blocking threshold value is established based upon the measured second performance indicator and may be adjusted to allow more or less blocking based on any additional metrics that characterize the performance of the current subscriber stations. The decision to grant or deny access of the subscriber station to the wireless communications system is determined based on a comparison of the measured first performance indicator to the established blocking threshold value.
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公开(公告)号:CA2342730A1
公开(公告)日:2001-11-30
申请号:CA2342730
申请日:2001-04-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor: IBANEZ MARC BENEDICT , SONG LEI , VITEBSKY STANLEY , THOMAS MATHEW , GANDHI ASIF DAWOODI , HUANG JOE
Abstract: A method for controlling access of a subscriber station to a wireless communications system facilitates the maintenance of a performance target of the reverse link and desired geographic coverage of the reverse link. The method for controlling access of a subscriber station to a wireless communications syst em includes measuring a first performance indicator and a second performance indicator f or a reverse link associated with a subscriber station seeking access to a wireless communications system. A blocking threshold value is established based upon the measured second performance indicator and may be adjusted to allow more or less blocking bas ed on any additional metrics that characterize the performance of the current subscrib er stations. The decision to grant or deny access of the subscriber station to the wirele ss communications system is determined based on a comparison of the measured first performance indicator to the established blocking threshold value.
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