-
公开(公告)号：BR0007121A
公开(公告)日：2001-08-07
申请号：BR0007121
申请日：2000-03-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUO WEN-YI , MEYERS MARTIN HOWARD , CHEN TSAO-TSEN
Abstract: The invention provides a novel methodology for increasing the performance of CDMA systems with packet data services by accommodating a variety of users with different rates. The invention operates to increase the spectrum efficiency of a wireless system by using an optimal transmission set of base transceiver stations and assigning proper data rates to efficiently utilize the radio resources. In particular, the invention operates to decrease interference so that the quality of data transmission in CDMA systems is advantageously maintained. Moreover, the invention operates to increase the allocation of bandwidth, particularly for high-speed data services. The invention provides a methodology to evaluate the data rates of different combinations of BTSs that may be in connection with a particular mobile station (MS), allocate an appropriate data rate for the MS and make allocation of system resources more efficient in a multi-user environment.
-
公开(公告)号：BR0004356A
公开(公告)日：2001-05-02
申请号：BR0004356
申请日：2000-09-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUO WEN-YI , MEYERS MARTIN HOWARD
Abstract: In order to effectively terminate a burst transmission in a wireless system, a method and apparatus determines whether or not a burst transmission from a wireless unit to a base station should be terminated by evaluating at least one criterion related to the operation of the wireless system. Once it is determined that a burst transmission should be terminated, the transmission is terminated by lowering a target signal -to-noise ratio (SIR) by a predetermined amount. By lowering this target SIR, power control bits transmitted from the base station to the wireless unit instruct an extreme decrease in power of the burst transmission and quickly act to terminate the burst transmission.
-
公开(公告)号：AU6122900A
公开(公告)日：2001-04-05
申请号：AU6122900
申请日：2000-09-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUO WEN-YI , MEYERS MARTIN HOWARD
Abstract: In order to effectively terminate a burst transmission in a wireless system, a method and apparatus determines whether or not a burst transmission from a wireless unit to a base station should be terminated by evaluating at least one criterion related to the operation of the wireless system. Once it is determined that a burst transmission should be terminated, the transmission is terminated by lowering a target signal -to-noise ratio (SIR) by a predetermined amount. By lowering this target SIR, power control bits transmitted from the base station to the wireless unit instruct an extreme decrease in power of the burst transmission and quickly act to terminate the burst transmission.
-
公开(公告)号：BR0003642A
公开(公告)日：2001-04-03
申请号：BR0003642
申请日：2000-08-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMEL RAAFAT EDWARD , WEAVER CARL FRANCIS , MEYERS MARTIN HOWARD , WU XIAO CHENG , KUO WEN-YI
Abstract: A base station assembles a frame including information bits at a vocoding rate for downlink transmission over a traffic channel as channel bits at a channel rate. The base station places at least one rate-indicating bit at a beginning of the frame for indicating the vocoding rate. The mobile station evaluates the downlink transmission with consideration of the vocoding rate indicated by the at least one rate-indicating bit. The mobile station can determine the vocoding rate by decoding the beginning of the frame to permit power control in less than one frame duration from initial receipt of the frame at the mobile station.
-
105.发明专利
公开(公告)号：CA2317293A1
公开(公告)日：2001-03-14
申请号：CA2317293
申请日：2000-08-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUO WEN-YI , KAMEL RAAFAT EDWARD , WEAVER CARL FRANCIS , EIBLING EDWARD ELLIS , THOMAS MATHEW
Abstract: A method that adjusts the power level of a set of forward-link signals of a base station responsive to the loading of the forward link as determined by a power level measurement of the signal set. One power level measurement is a pilot fraction of the forward link. Other power level measurements, such as the signal set's power level, can be used, alone or in combination, instead of o r in addition to the pilot fraction of the forward link to adjust the power level of the signal set. The power level of the signal set can be changed in any manner, including by scaling it by a scaling factor, or by increasing the power leve l by a fixed or a variable amount. The power level measurement of the signal set is obtained during a current time period. The scaling factor that will be used in the subsequent time period is determined using the power level measurement. In one embodiment of the invention, the scaling factor can be obtained from a look-up table that is based on the power level measurement. If the cell containing t he base station includes several sectors, the power level of the signal set in a sector is adjusted when the power level measurement in that sector indicates that t he power level should be adjusted.
-
Patent Agency Ranking
公开(公告)号：AU5355200A
公开(公告)日：2001-03-01
申请号：AU5355200
申请日：2000-08-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMEL RAAFAT EDWARD , KUO WEN-YI , MEYERS MARTIN HOWARD , WEAVER CARL FRANCIS , WU XIAO CHENG
Abstract: A base station assembles a frame including information bits at a vocoding rate for downlink transmission over a traffic channel as channel bits at a channel rate. The base station places at least one rate-indicating bit at a beginning of the frame for indicating the vocoding rate. The mobile station evaluates the downlink transmission with consideration of the vocoding rate indicated by the at least one rate-indicating bit. The mobile station can determine the vocoding rate by decoding the beginning of the frame to permit power control in less than one frame duration from initial receipt of the frame at the mobile station.
-
107.发明专利
公开(公告)号：AU4266300A
公开(公告)日：2001-01-11
申请号：AU4266300
申请日：2000-06-26
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMEL RAAFAT EDWARD , KUO WEN-YI , MEYERS MARTIN HOWARD , WEAVER CARL FRANCIS , WU XIAO CHENG
Abstract: A power control method of the invention may be applied to downlink power control, uplink power control, or both to support different quality of service levels for multiple channels per a mobile station. The power control method transmits control data between a base station and a multi-channel mobile station on a single communications channel or sub-channel to minimize or reduce overhead traffic from the control data.
-
公开(公告)号：BR0001878A
公开(公告)日：2000-10-31
申请号：BR0001878
申请日：2000-03-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUO WEN-YI , LU MING
Abstract: The invention provides a power control methodology that increases the performance and the throughput of wireless communication systems. In particular, the invention provides a reverse jamming prevention process that efficiently utilizes power resources in a communication system such as CDMA. The invention advantageously prevents reverse jamming due to link imbalance that results from differences in forward and reverse link coverage. According to the invention, an evaluation set (e-set), which is a super set of the active set of base transceiver stations serving specific users, is determined to prevent the negative effects of reverse jamming. Excessive interference problems in the reverse link, particularly in high-speed wireless systems, are thus avoided.
-
公开(公告)号：BR0001857A
公开(公告)日：2000-10-31
申请号：BR0001857
申请日：2000-03-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHEN TSAO-TSEN , KUO WEN-YI
Abstract: The invention provides a novel burst duration assignment process that increases the performance and improves the throughput of communication systems. In particular, the invention provides an optimal burst duration assignment methodology such that resources are efficiently utilized and maximized in a communication system such as a code division multiple access (CDMA) system. According to the invention, burst duration is assigned based on channel fading fluctuation and user mobility in the communication system. In general, shorter burst duration is assigned to users with higher fading fluctuation and high mobility. Longer burst duration is assigned to users with lower fading fluctuation and low mobility. In a particular embodiment of the invention, the burst assignment is based on a function of duration versus fluctuation.
-
公开(公告)号：BR0000024A
公开(公告)日：2000-10-31
申请号：BR0000024
申请日：2000-01-07
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHEN TAI-ANN , KUO WEN-YI
-
-
-
-
-
-
-
-
-
Search Results
114
records
(took 0.026 seconds)
