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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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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：JP2001111483A
公开(公告)日：2001-04-20
申请号：JP2000253425
申请日：2000-08-24
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ZHU LILY , EIBLING EDWARD ELLIS , KUN WAN KO
IPC: G01R11/02 , H04B1/04 , H04B7/005 , H04B7/26 , H04B17/00 , H04W52/24 , H04W52/26 , H04W52/34 , H04W52/40 , H04W52/50
Abstract: PROBLEM TO BE SOLVED: To measure a power level on the whole in a fixed period concerning a signal set which is constituted of a plurality of signals. SOLUTION: The power level of the signal is measured through the use of power instructing signal characteristics which include an information amount and gain, for example. The power instructing signal characteristics include information instructing whether or not information included in a traffic signal is control information or information instructing voice and/or data information, information instructing whether or not the signal is the one for setting a call or is a part of the established signal and information instructing whether the call is soft-handed off or not. A signal measurement interval is equal to or smaller than a period for changing any one of the power instructing signal characteristics. The signal set includes the whole part or a part of the signal of one sector in a cell including a base station and the whole part or a part of the signal which is amplified by the amplifier of the base station.
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公开(公告)号：JP2001078269A
公开(公告)日：2001-03-23
申请号：JP2000214300
申请日：2000-07-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： EIBLING EDWARD ELLIS , GANDHI ASIF DAWOODI , KUO WEN-YI , THOMAS MATHEW , WEAVER CARL FRANCIS
Abstract: PROBLEM TO BE SOLVED: To provide a call blockade start method in call reception control in a radio system. SOLUTION: In a method for starting call blockade in response to a pilot fraction as a call quality measurement value in a base station 200 in a radio system, a sampling square integral circuit 202 obtains a power level based on a current time length, a sampling square integral circuit 204 obtains a power level of a pilot based on the current time length and the both the power levels are fed to a 1st averaging element 210. The 1st averaging element 210 decides a mean pilot fraction based on the current time length from both the power levels. The comparator 220 compares the mean pilot fraction and a pilot fraction blockage threshold value and a controller 240 uses a call reception program to start call blockade in response to the case that the mean pilot fraction is smaller than the pilot fracture blockage threshold value. A frame error rate may be used in place of the pilot fraction for a call quality measurement value.
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公开(公告)号：CA2313554A1
公开(公告)日：2001-01-19
申请号：CA2313554
申请日：2000-07-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： THOMAS MATHEW , WEAVER CARL FRANCIS , GANDHI ASIF DAWOODI , EIBLING EDWARD ELLIS , KUO WEN-YI
Abstract: A method that initiates call blocking responsive to a call-quality measureme nt of the forward link. The call-quality measurement is a measurement of how well a mobile terminal is able to receive the forward link. One call-quality measurement is a pilot fraction of the forward link, which is a ratio of the pilot's power level to the power level of a se t of forward-link signals of a base station. Call blocking is initiated when an average pilot fraction is below a pilot-fraction blocking threshold. The pilot's power level is obtained for a time period, a nd the signal set's power level is obtained for the same time period. The pilot fraction i s determined for the time period, and then used to determine the average pilot fraction for the time period. The average pilot fraction for the current time period is based on a pilot fraction for the current time period, and an average pilot fraction for a previous time period. When the average pilot fraction is below the pilot-fraction blocking threshold, call blocking is initiated. The pilot-fraction blocking threshold is preferably based on: 1) the pilot fraction when the ba se station is at full load; 2) the size, shape, and terrain of the cell; and 3) the aggressiveness of the overload control. In the preferred embodiment, the signal set includes allof the signals generated by the base station, alternatively, the signal set can include fewer than all the signal s generated by the base station. If the cell includes several sectors, the call blocking is initiate d on a sector basis when the average pilot fraction of the sector is below the pilot-fraction blockin g threshold. Other call-quality measurements, such as the forward link's frame error rate, the number of dropped calls, or the Power Measurement Report Message (PMRM), can be used, alone or in combination, instead of or in addition to the pilot fraction of the forward link to determine whether call blocking should be initiated. Determining whether call blocking should be initiated using one of the other call-quality measurements is performed in a similar manner as for the pilot fraction. Initiating call blocking using several call-quality measurements involves initiating call blocking when any one of the call-quality measurements indicates that call blocking should be initiated. Alternatively, call blocking can be initiated when several of the call quali ty measurements indicate that call blocking should be initiated.
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Patent Agency Ranking
公开(公告)号：DE60017843D1
公开(公告)日：2005-03-10
申请号：DE60017843
申请日：2000-09-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： EIBLING EDWARD ELLIS , KAMEL RAAFAT EDWARD , KUO WEN-YI , THOMAS MATHEW , WEAVER CARL FRANCIS
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 or 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 level 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 the 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 the power level should be adjusted.
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公开(公告)号：CA2316491C
公开(公告)日：2004-10-19
申请号：CA2316491
申请日：2000-08-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： EIBLING EDWARD ELLIS , KO KYUNG HWAN , ZHU LILY
IPC: G01R11/02 , H04B1/04 , H04B7/005 , H04B7/26 , H04B17/00 , H04W52/24 , H04W52/26 , H04W52/34 , H04W52/40 , H04W52/50 , H04Q7/36
Abstract: The power level of at least one forward-link signal is determined for a measurement interval, where the measurement interval has a duration smaller than or equa l to the time period in which at least one power-indicative signal characteristic can change. For example, a power-indicative signal characteristic used can be the information rate of t he signal, which can change once per frame. In this case the measurement interval would be smaller than or equal to a frame. Preferably, the measurement interval is smaller than the time period in whic h any of the power-indicative signal characteristics can change. The power level of the signal is based on the signal's power-indicative signal characteristics during the measurement interval. In one embodiment of the invention, the signal's power-indicative signal characteristics include the information rate, and the gain of the signal. The power-indicative signal characteristics can also include whether the information contained in a traffic signal is control information or voice and/or data information, whether the signal is setting up a call or is part of an established call, and whether the call is in a soft handoff. Each forward-link signal is a par t of a signal set. The signal set can include: all or some of the signals corresponding to a sector ofthe cell containing the base station; or all or some of the signals amplified by the base station's amplifier. The power level of each signal that is in the signal set is summed to obtain the power level of the signal set.
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公开(公告)号：CA2316491A1
公开(公告)日：2001-02-28
申请号：CA2316491
申请日：2000-08-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ZHU LILY , EIBLING EDWARD ELLIS , KO KYUNG HWAN
IPC: G01R11/02 , H04B1/04 , H04B7/005 , H04B7/26 , H04B17/00 , H04W52/24 , H04W52/26 , H04W52/34 , H04W52/40 , H04W52/50 , H04Q7/36
Abstract: The power level of at least one forward-link signal is determined for a measurement interval, where the measurement interval has a duration smaller than or equa l to the time period in which at least one power-indicative signal characteristic can change. For example, a power-indicative signal characteristic used can be the information rate of t he signal, which can change once per frame. In this case the measurement interval would be smaller than or equal to a frame. Preferably, the measurement interval is smaller than the time period in whic h any of the power-indicative signal characteristics can change. The power level of the signal is based on the signal's power-indicative signal characteristics during the measurement interval. In one embodiment of the invention, the signal's power-indicative signal characteristics include the information rate, and the gain of the signal. The power-indicative signal characteristics can also include whether the information contained in a traffic signal is control information or voice and/or data information, whether the signal is setting up a call or is part of an established call, and whether the call is in a soft handoff. Each forward-link signal is a par t of a signal set. The signal set can include: all or some of the signals corresponding to a sector of the cell containing the base station; or all or some of the signals amplified by the base station's amplifier. The power level of each signal that is in the signal set is summed to obtain the power level of the signal set.
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公开(公告)号：DE60041306D1
公开(公告)日：2009-02-26
申请号：DE60041306
申请日：2000-08-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： EIBLING EDWARD ELLIS , KO KYUNG HWAN , ZHU LILY
IPC: H04B7/005 , G01R11/02 , H04B1/04 , H04B7/26 , H04B17/00 , H04W52/24 , H04W52/26 , H04W52/34 , H04W52/40 , H04W52/50
Abstract: The power level of at least one forward-link signal is determined for a measurement interval, where the measurement interval has a duration smaller than or equal to the time period in which at least one power-indicative signal characteristic can change. For example, a power-indicative signal characteristic used can be the information rate of the signal, which can change once per frame. In this case the measurement interval would be smaller than or equal to a frame. Preferably, the measurement interval is smaller than the time period in which any of the power-indicative signal characteristics can change. The power level of the signal is based on the signal's power-indicative signal characteristics during the measurement interval. In one embodiment of the invention, the signal's power-indicative signal characteristics include the information rate, and the gain of the signal. The power-indicative signal characteristics can also include whether the information contained in a traffic signal is control information or voice and/or data information, whether the signal is setting up a call or is part of an established call, and whether the call is in a soft handoff. Each forward-link signal is a part of a signal set. The signal set can include: all or some of the signals corresponding to a sector of the cell containing the base station; or all or some of the signals amplified by the base station's amplifier. The power level of each signal that is in the signal set is summed to obtain the power level of the signal set.
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公开(公告)号：CA2311901A1
公开(公告)日：2001-01-19
申请号：CA2311901
申请日：2000-06-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： WEAVER CARL FRANCIS , THOMAS MATHEW , KAMEL RAAFAT EDWARD , BI QI , EIBLING EDWARD ELLIS , KUO WEN-YI
Abstract: A method that changes the power level of a set of forward-link signals, independent of the individual power control of each of the forward-link signals in the set, responsive to a comparison of the signal set's power level and a threshold power level (P th ). The threshold power level (P th) is based on the base station's (200, 400) amplifier's (15 0) maximum threshold power level. The power level of the set is changed by scaling it by a scalin g factor. The total power level (P[n-1]) of the set is obtained during a current frame, and then the scaling factor (g[n]) that will be used in the subsequent frame is determined. The scaling factor (g[n]) is preferably based on the total power level (P[n-1]) of the set for the curren t frame, a scaling factor (g[n-1]) used during the current frame, and a threshold power level ( P th). The amount by which the total power level exceeds the amplifier's maximum continuous power level is the overload amount. The scaling factor is selected so that for each frame the overload amount is reduced by a percentage. For example, the overload amount can be reduced by 3% for the current frame, then the percentage may be changed for a subsequent frame based on th e scaling factor of the current time period and the overload amount of the subsequent time perio d. The set caninclude all of the signals amplified by the base station's amplif ier (150); alternatively, the set can include fewer than all the signals generated by the base station. For example, the set can include a plurality of the traffic signals, or a plurality of the traffic signals and one or more of the control signals. When the base station includes a plurality of amplifier s, each for amplifying a set of signals, the above process can be performed for each of the sets of signals.
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