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公开(公告)号：JP2000101512A
公开(公告)日：2000-04-07
申请号：JP26610299
申请日：1999-09-20
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMEL RAAFAT EDWARD , KUO WEN-YI , MEYERS MARTIN HOWARD , WEAVER CARL FRANCIS
Abstract: PROBLEM TO BE SOLVED: To appropriately set an initial power level by calculating an interference measure from pilot power received by a mobile station and setting the initial power level of a forward direction link based on the interference measure. SOLUTION: A base station starts (210) the setting process of a call in response to an access probe from the mobile station and appropriately sets (220) the initial power level by using a pilot parameter Ec/Io (energy per chip to interference density) received by the mobile station obtained within access probe transmission. Then, the base station calculates a difference between the Ec/Io received by the mobile station and the Ec/Io transmitted by the base station and calculates (230) the interference measure. Then, the base station uses the interference measure and appropriately sets the initial power level on a forward direction link traffic channel. In the case that the interference measure indicates the interference of a high level, a high initial power level is set for the forward direction link traffic channel.
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2.发明专利
公开(公告)号：JP2001111479A
公开(公告)日：2001-04-20
申请号：JP2000255257
申请日：2000-08-25
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMEL RAAFAT EDWARD , KUO WEN-YI , MEYERS MARTIN HOWARD , WEAVER CARL FRANCIS , WU XIAO CHENG
Abstract: PROBLEM TO BE SOLVED: To reinforce a power control ability by deciding a vocoding rate before receiving the sequence of a downward frame or an interleaving frame. SOLUTION: In a base station 14, one frame is organized, which includes an information bit in the vocoding rate as a channel bit in one channel rate, in order to transmit a downward signal on a traffic channel and at least one rate indicating bit which expresses the vocoding rate is arranged in the head part of the frame. In a mobile station 16, downward transmission power is calculated by taking the vocoding rate expressed by at least one rate indicating bit in consideration and the vocoding rate is decided by decoding the head part of the frame so that power control is executed in a period being shorter than one frame from the repetition of the first frame.
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3.发明专利
公开(公告)号：JP2001148881A
公开(公告)日：2001-05-29
申请号：JP2000279008
申请日：2000-09-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMEL RAAFAT EDWARD , MEYERS MARTIN HOWARD , WEAVER CARL FRANCIS , WU XIAO CHENG
IPC: H04B1/04 , H04B7/005 , H04B7/26 , H04W52/12 , H04W52/36 , H04W52/40 , H04Q7/36 , H04J13/00 , H04Q7/22
Abstract: PROBLEM TO BE SOLVED: To provide a soft hand-off in a wireless communication system that can control power at a high-speed while reducing a spread between power levels of a base station. SOLUTION: Base stations 312, 314 or the like in the soft hand-off adjust a transmission power level in a 1st quantity when they take part in the soft hand-off and adjust a transmission power level in a 2nd quantity when they take no part in the soft hand-off. The adjustment is made by using a down-step size larger than an up-step size when the base stations 312, 314 or the like take part in the soft hand-off. Then the transmission power level is adjusted by a smaller up-step size and a higher down-step size when the base stations 312, 314 or the like receive the adjustment instruction.
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公开(公告)号：JP2000286793A
公开(公告)日：2000-10-13
申请号：JP2000069354
申请日：2000-03-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JIANG FRANCES , KAMEL RAAFAT EDWARD , LI QUINN , SALVARANI ALEXANDRO FEDERICO , WEAVER CARL FRANCIS
IPC: H04B1/04 , H04B7/005 , H04B7/26 , H04W52/12 , H04W52/24 , H04W52/26 , H04W52/36 , H04W52/40 , H04J13/00
Abstract: PROBLEM TO BE SOLVED: To obtain a communication system whose transmission power can be controlled. SOLUTION: The power control method in a wireless communication system includes a step where a target value 130 of signal quality of a received signal 270 is decided, a step where a power controlled variable conversion coefficient 245 is obtained, a step where the target value 130 of the signal quality is converted by the power controlled variable conversion coefficient 245, a step where the signal quality value 160 of the received signal 270 is measured, a step where the measured signal quality value 160 is compared with the converted signal quality target value 260, a step where increased power of the received signal 270 is requested in response to it that the signal quality value 160 of the received signal 270 is lower than the converted signal quality target value 260, and a step where decreased power of the received signal 270 is requested in response to it that the signal quality value 160 of the received signal 270 is higher than the converted signal quality target value 260.
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5.发明专利
公开(公告)号：JP2002112329A
公开(公告)日：2002-04-12
申请号：JP2001277361
申请日：2001-09-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GANDHI ASIF DAWOODI , KAMEL RAAFAT EDWARD , THOMAS MATHEW , VITEBSKY STANLEY , WEAVER CARL FRANCIS
Abstract: PROBLEM TO BE SOLVED: To provide a method for promoting the maintenance of a performance target of an inverse link by deciding the time when a request at a high transmission rate is permitted for a mobile station having an access to a communication system at present. SOLUTION: The method for deciding the time when a mobile station can have an access to a high transmission rate includes the acquisition of a 1st estimated performance indicator and a 2nd estimated performance indicator with respect to an inverse link of a base station to which the mobile station accesses at present. A blocking threshold (32) is established. Accessing at a requested high transmission rate is conducted on the basis of comparing the 1st indicator and the 2nd indicator with the established blocking threshold. In the case that an access at a requested high rate is rejected, an access at a 2nd higher rate not deteriorating the performance of the wireless communication system is permitted.
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Patent Agency Ranking
公开(公告)号：JP2001148659A
公开(公告)日：2001-05-29
申请号：JP2000277408
申请日：2000-09-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： EIBLING EDWARD ELLIS , KAMEL RAAFAT EDWARD , KUO WEN-YI , THOMAS MATHEW , WEAVER CARL FRANCIS
Abstract: PROBLEM TO BE SOLVED: To solve the problem of the deterioration of communication quality accompanying traffic increase. SOLUTION: Other output level measured values such as the output level of the set of signals are used instead of the pilot ratio of a forward direction link or by being added to it so as to adjust the output level of the set of the signals. The output level of the set of the signals is changed by a method including scaling by a scaling factor or the increase of the output level by a fixed or variable amount. The output level measured value of the set of the signals is obtained during a present period and the scaling factor to be used in the next period is decided by using the output level measured value. The scaling factor is obtained from a lookup table based on the output level measured value. In the case that a cell provided with a base station 200 is provided with some sectors, the output level of the set of the signals in the sector is adjusted when the output level measured value in the sector indicates that the output level is to be adjusted.
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7.发明专利
公开(公告)号：JP2001128219A
公开(公告)日：2001-05-11
申请号：JP2000264842
申请日：2000-09-01
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMEL RAAFAT EDWARD , KUO WEN-YI , MEYERS MARTIN HOWARD , WEAVER CARL FRANCIS , WU XIAO CHENG
IPC: H04B1/04 , H04B7/005 , H04B7/26 , H04W52/12 , H04W52/14 , H04W52/40 , H04W52/50 , H04Q7/22 , H04J13/00
Abstract: PROBLEM TO BE SOLVED: To facilitate control of a forward link transmission output of a voice, control and data channel simultaneously communicated by a base station taking part in soft hand-off. SOLUTION: The method for controlling a down link transmission output of a wireless system includes a step (A) where a forward control channel instructs assignment of a multiple reverse output control channel when the forward control channel is sent from a sector of a set different from the forward data channel in relation to the forward control channel and a base station relating to the forward control channel takes part in soft hand-off and a step (B) where a transmission output of the forward channel is adjusted based on the reverse output control channel relating to the forward channel.
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公开(公告)号：JP2001086062A
公开(公告)日：2001-03-30
申请号：JP2000217059
申请日：2000-07-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BI QI , EIBLING EDWARD ELLIS , KAMEL RAAFAT EDWARD , KUO WEN-YI , THOMAS MATHEW , WEAVER CARL FRANCIS
Abstract: PROBLEM TO BE SOLVED: To obtain a system to avoid an overload state of a base station. SOLUTION: In a method for controlling the power level of a signal transmitted from the base station 200 in a wireless communication system, a set of signals to be amplified by an amplifier 150 is transmitted by the base station 200, the method is constituted by providing a step for changing the power level of the set of signals and the step for changing the power level to be changed is performed according to comparison between the power level of the set of signals and a threshold power level Pth determined, based on the maximum continuous power level of the amplifier independently on individual power control of each signal in the set of signals.
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公开(公告)号：JP2001069077A
公开(公告)日：2001-03-16
申请号：JP2000205957
申请日：2000-07-07
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMEL RAAFAT EDWARD , KUO WEN-YI , MEYERS MARTIN HOWARD , WEAVER CARL FRANCIS , WU XIAO CHENG
Abstract: PROBLEM TO BE SOLVED: To realize efficiency in a system and to save system resources by controlling power in a down-link or an up-link in accordance with the quality of first and second channels between a mobile station and base station. SOLUTION: In the case of the down-link in a communication system 8, when the first and second communication channels with the base station 10 are established, the mobile station 30 measures the quality of a service parameter in each channel with a measuring instrument 34, it is compared with previously set prescribed target quality, the difference is adopted as increment updating data to decide control data for controlling down-link transmission power and it is transmitted to the base station 10. The down-link power controller 14 adjusts transmission power by referring to increment offset data based on control data from the mobile station 30. In the case of the up-link. The up-link controller 36 of the mobile station 30 adjusts the transmission power of its own station by control data based on increment updating data from the base station 10 in the same way and executes the same processing as necessary or regularly afterward.
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公开(公告)号：JP2000183812A
公开(公告)日：2000-06-30
申请号：JP34688599
申请日：1999-12-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BI QI , KAMEL RAAFAT EDWARD , RUBIN HARVEY
Abstract: PROBLEM TO BE SOLVED: To provide separate control information for a forward voice channel and a data channel by transmitting power control information for a 2nd channel between parts of a 2nd segment of a pilot channel. SOLUTION: A part used for power control is 1/4 of a segment, i.e., a power control group(PCG). Power control parts and/or PCGs of continuous segments are alternately used to offer voice power control information of a forward channel and data power control information. Here, a power control signal is transmitted three times for a voice channel, while a power control signal is transmitted one time for a data channel. Power control parts 80, 82 and 84 include a command on the forward voice power control, and a power control part 86 includes a power control command for forward data channel power control. Power control parts 88, 90 and 92 are used for forward voice power control, and the power control part 92 is used for forward data power control.
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