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公开(公告)号：AU746112B2
公开(公告)日：2002-04-18
申请号：AU2121599
申请日：1999-03-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GRANDHI SUDHEER A , HUANG JOE , KAHN COLIN LEON , 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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12.发明专利
公开(公告)号：CA2329265A1
公开(公告)日：2001-07-21
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: H04L1/00 , H04B1/04 , H04B7/005 , H04B7/26 , H04J3/00 , H04W52/20 , H04W52/24 , H04W52/36 , H04J3/02 , H04Q7/36
Abstract: A method for controlling downlink power in a time-division multiplex wirele ss system may provide different downlink transmit signal powers to different ti me- division multiplex channels of a single carrier. A base station receives 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：CA2250559C
公开(公告)日：2002-12-31
申请号：CA2250559
申请日：1998-10-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAHN COLIN LEON , LAMOUREUX PHILIP , MURPHY MYLES PATRICK , HUANG JOE , ZHANG BULIN
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：CA2263032C
公开(公告)日：2002-07-02
申请号：CA2263032
申请日：1999-02-26
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAHN COLIN LEON , KUMARAN KRISHNAN , HUANG JOE , ZHANG BULIN B , GRANDHI SUDHEER A
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 receiv es 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：CA2313253A1
公开(公告)日：2001-01-15
申请号：CA2313253
申请日：2000-06-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： WU I-FONG ANTONIO , YU BEE YUN , HUANG CHING YAO , HUANG JOE , WU XIAO CHENG
Abstract: Soft handoffs in an IS-95 CDMA system or other wireless communication syst em 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 selec t 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 th e 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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Patent Agency Ranking
公开(公告)号：DE69800327D1
公开(公告)日：2000-11-02
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：BR9803926A
公开(公告)日：1999-12-21
申请号：BR9803926
申请日：1998-10-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HUANG JOE , ZHANG BULIN , KAHAN COLIN LEON , LAMOUREUX PHILIP , MURPHY MYLES PATRICK
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公开(公告)号：DE69935362D1
公开(公告)日：2007-04-19
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：DE60026457T2
公开(公告)日：2006-09-14
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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公开(公告)号：DE60105108T2
公开(公告)日：2005-09-01
申请号：DE60105108
申请日：2001-04-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： AIKEN RICHARD THOMAS , HUANG JOE
Abstract: Method and apparatus for directing energy in a plurality of azimuth directions. The amount of energy directed in the azimuth direction of a mobile terminal (130,140,150) is a function of the location and acceptable receive strength of at least two mobile terminals (130,140,150). The function is such that the strength of an EM field at the location of any of these two mobile terminals (130,140,150) is at least as large as, but not significantly larger than, needed for that mobile terminal (130,140,150) to acceptably receive the signal carried by the EM field. The amount of energy to be directed in the azimuth direction of a mobile terminal (130,140,150) is arrived at by first determining for each one of the mobile terminals (130,140,150) an EM field that would have to be generated for the mobile terminal (130,140,150) in order to provide an acceptable receive strength thereat, the determining taking into account the strength, at the location of the mobile terminal (130,140,150), of EM fields previously determined for others of the mobile terminals (130,140,150). This determining is repeated until the EM fields determined for at least two of the mobile terminals (130,140,150) provide an EM field strength for each of these two mobile terminals (130,140,150) that is substantially equal to its adequate receive strength. This determining is repeated until the EM fields converge. The amount of energy is then determined based on the EM fields thus determined.
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