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公开(公告)号：CA2315488A1
公开(公告)日：2001-02-25
申请号：CA2315488
申请日：2000-08-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , GRANDHI SUDHEER A
Abstract: A computer implemented method and apparatus that schedules broadcast short message service (BSMS) messages in a manner that reduces the adverse impact on voice quality and system capacity, attributable to the transmission of the BSMS messages, in a wireless telecommunications system. The method and apparatus utilize a quality of service (QoS) based broadcast message scheduler to negotiate and schedule the transmission times of BSMS messages to the individual users in the syste m. The quality of service (QoS) based broadcast message scheduler also allows a use r to tradeoff voice quality for broadcast capacity.
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公开(公告)号：CA2273782A1
公开(公告)日：2000-02-07
申请号：CA2273782
申请日：1999-06-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , HUANG CHING YAO
Abstract: A code-division multiple access base station assisted quality soft handoff algorithm screens or filters out candidate pilot signals from a pilot strength measurement message generated by a mobile station and provides the revised pilot strength measurement message to the mobile switching center of the mobile communication system. The mobile switching center subsequently conducts handoff processing in accordance with the revised pilot strength measurement message. If the combined pilot signal strength of the existing mobile station active legs is less than a first threshold, the current pilot strength measurement message is maintained. If the combined pilot signal strength of the existing mobile station active legs is greater than or equal to the first threshold, all candidate pilot signals are deleted from the pilot strength measurement message such that only pilot signals of existing mobile station active legs remain. Also, if the pilot signal strength of a candidate pilot signal is greater than a second threshold, the candidate pilot signal is added to the pilot strength measurement message. The number of handoffs per call are reduced using the revised pilot strength measurement message such that forward link power and network processing resources are conserved.
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公开(公告)号：AU1210899A
公开(公告)日：1999-08-05
申请号：AU1210899
申请日：1999-01-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , GANDHI ASIF DAWOODI
Abstract: Link performance is measured in a code division multiple access (CDMA) personal communication service (PCS) or cellular system, or other type of wireless system, using a test set-up (30) which permits the simulation of various changes in system configuration. An illustrative embodiment includes a first attenuator (36) arranged in a common portion of a receive path and a transmit path of a mobile station (32) of the system, and a second attenuator (40) arranged in either a receive-only portion of the receive path or a transmit-only portion of the transmit path. The amounts of attenuation provided by the first and second attenuators are decoupled such that a different amount of attenuation can be provided on the transmit path than on the receive path. Performance of forward and reverse links of the system are measured while varying a value of at least one of the first or second attenuators. For a given measurement, the attenuator values may be selected to simulate performance of the system in a configuration in which base station amplifier power is increased or decreased. As another example, the attenuator values may be selected to simulate performance of the system in a configuration in which cell size is increased. This arrangement of decoupled forward and reverse link attenuation in accordance with the invention permits efficient and accurate determination of link balance conditions.
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公开(公告)号：DE60143925D1
公开(公告)日：2011-03-10
申请号：DE60143925
申请日：2001-05-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , HUANG CHING YAO , JIANG FRANCES , SALVARINI ALEXANDRO FEDERICO
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公开(公告)号：CA2202807C
公开(公告)日：2001-12-18
申请号：CA2202807
申请日：1997-04-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BORST SIMON C , ANDERSON NEFATITI , CHEW LINDSEY , GRANDHI SUDHEER A , I CHIH-LIN , KAUFMAN JOSEPH SAMUEL , LUBACHEVSKY BORIS DMITRIEVICH , NARENDRAN BALAKRISHNAN , CANNELL LYNELL E , SAND DONNA M , CHENG TERRY SI-FONG
Abstract: An interference based dynamic channel assignment scheme for a wireless communication network, for self configuring dynamic channel assignment of a plurality of channels, comprises the steps of: prioritizing a channel list and priorit izing a selected subset of the prioritized channel list. In further enhancements of the prese nt invention, prioritizing a channel list is distributed on a per cell/sector basis so tha t prioritization is independent of frequency usage information from other cells/sectors and prio ritization is based upon uplink and downlink characteristics.
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Patent Agency Ranking
公开(公告)号：ID24114A
公开(公告)日：2000-07-06
申请号：ID990718
申请日：1999-07-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , HUANG CHING YAO , KOO YUEN YIN , LIN SHEN-DE , WEAVER CARL F
Abstract: A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.
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公开(公告)号：CA2280324A1
公开(公告)日：2000-03-30
申请号：CA2280324
申请日：1999-08-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , HUANG CHING YAO
Abstract: A code-division multiple access power control for paging channel power and initial tragic channel power dynamically determines optimum initial channel power in accordance with pilot signal strength of a pilot signal as received at a mobile station and current forward link loading of the desired sector. The optimum initial paging channel power and initial traffic channel power may be determined either at a base station or a mobile switching center of the mobile communication system. A paging signal or call is transmitted from the base station to the mobile station over a paging channel and a traffic channel at the optimum paging channel and initial traffic channel power.
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公开(公告)号：CA2276804A1
公开(公告)日：2000-02-17
申请号：CA2276804
申请日：1999-07-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , WEAVER CARL FRANCIS , LIN SHEN-DE , HUANG CHING YAO , KOO YUEN-YIN
Abstract: A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.
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39.发明专利
公开(公告)号：AU3798299A
公开(公告)日：2000-01-20
申请号：AU3798299
申请日：1999-07-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , ZHU LILY , YAO YUQI , JIANG FRANCES , HUANG CHING YAO
Abstract: PURPOSE: A method is provided to control a traffic load by for a user of an existing base station. CONSTITUTION: The control method of a cell traffic load of a base station comprises steps: that a subscriber station obtains an operating code from the base station by receiving a pilot signal from the base station; of defining a pilot signal boundary about the base station; that the subscriber station obtained the pilot signal obtains a traffic channel allocation from the base station by receiving a paging signal from the base station; of monitoring a traffic load state of the base station; of changing the boundary of the valid area of the paging signal inside the pilot signal boundary.
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公开(公告)号：CA2256979A1
公开(公告)日：1999-07-16
申请号：CA2256979
申请日：1998-12-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GANDHI ASIF DAWOODI , CHENG TERRY SI-FONG
Abstract: Link performance is measured in a code division multiple access (CDMA) personal communication service (PCS) or cellular system, or other type of wireless system, using a test set-up which permits the simulation of various changes in system configuration. An illustrative embodiment includes a first attenuator arranged in a common portion of a receive path and a transmit path of a mobile station of the system, and a second attenuator arranged in either a receive-only portion of the receive path or a transmitonly portion of the transmit path. The amounts of attenuation provided by the first and second attenuators are decoupled such that a different amount of attenuation can be provided on the transmit path than on the receive path. Performance of forward and reverse links of the system are measured while varying a value of at least one of the first or second attenuators. For a given measurement, the attenuator values may be selected to simulate performance of the system in a configuration in which base station amplifier power is increased or decreased. As another example, the attenuator values may be selected to simulate performance of the system in a configuration in which cell size is increased. This arrangement of decoupled forward and reverse link attenuation in accordance with the invention permits efficient and accurate determination of link balance conditions.
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