CN1162025C - Power control device and method for wideband multiple-carrier base station in digital mobile communication system - Google Patents
Power control device and method for wideband multiple-carrier base station in digital mobile communication system Download PDFInfo
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- CN1162025C CN1162025C CNB011054476A CN01105447A CN1162025C CN 1162025 C CN1162025 C CN 1162025C CN B011054476 A CNB011054476 A CN B011054476A CN 01105447 A CN01105447 A CN 01105447A CN 1162025 C CN1162025 C CN 1162025C
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Abstract
The present invention relates to a power control device for a wideband multiple-carrier base station in a digital mobile communication system and a method thereof. An open-ring power control method is adopted, and the control of the power of carriers is realized by a voltage control attenuator after multiple-path synthesis. The method of the power control device for a wideband multiple-carrier base station in a digital mobile communication system separates the control of static power level, the control of dynamic power level and up-down slope control and simultaneously controls the power of each carrier by an up-down slope control curve, and the method of the power control device for a wideband multiple-carrier base station in a digital mobile communication system also ensures that each power level of each carrier simultaneously meets the requirements of a GSM protocol for a time field mould plate and a frequency field mould plate. The method of the power control device for a wideband multiple-carrier base station in a digital mobile communication system can ensure that the control of the power level of each carrier is interdependent and can flexibly and conveniently change the transmitting power of any time slot of any carrier.
Description
The present invention relates to a kind of method of multi-carrier power control of wide band GSM base station of time division multiple access (TDMA) system that is applicable to the control of various required powers, relate in particular to a kind of method that realizes the wideband multiple-carrier base station in digital mobile communication system power control of carrier power control in the synthetic back of multichannel by voltage-controlled attenuator.
Gsm communication system is a kind of digital cellular mobile communcations systems the most ripe in the world at present and that the market occupancy volume is maximum, the digital wireless communication technology that it adopts FDMA to combine with TDMA.
One of effective measures that improve power system capacity in the gsm communication system are to improve the utilance of frequency spectrum, and its concrete manifestation form is to reduce the interference of interchannel.Reduce the method for disturbing at present and mainly contain 3 kinds: automated power control, frequency hopping and discontinuous emission (DTX).Discontinuous emission (DTX) in fact also can belong to the category of power control.The power control that this shows GSM is to reduce the important means that multiple access disturbs, and not only can greatly improve channel quality, and increase power system capacity to a great extent.
The principle of automated power control is: self adaptation reduction transmitter transmitting power when not needing maximum transmission power just can reach the situation of good transmission quality.Promptly guaranteeing that transmission quality is higher than the average transmit power that reduces travelling carriage and base station under the prerequisite of given thresholding, thereby reducing interference other channel.Power is controlled at and occupies consequence in the sender, and the quality of a sender performance quality depends on the performance of power control to a great extent.In fact in the wireless index test of GSM, it is that special control at power carried that many index is arranged.
The general closed power controlling schemes that adopts as shown in Figure 1 in traditional GSM base station, arrowband, it carries out power control separately at each carrier wave.This control device comprises: attenuator 101, amplifier 102, integrator 103, adder 104, detector 105.Detector 105 detects the forward power that obtains power amplifier output and detects voltage, then this voltage and the template curve 106 that obtains in advance according to certain algorithm are realized subtraction at adder 104 places, its difference goes to change transmitting power by the voltage-controlled attenuator 101 that integrator 103 goes to control in the transmission channel again.If carve the known template voltage 106 that detected power voltage is lower than at a time, then integrator 103 output voltages rise, and attenuator 101 attenuations reduce, and power output increases, and impel forward power to detect voltage and promote; When detection voltage was higher than template voltage 106, integrator 103 output voltages descended, and attenuator 101 attenuations increase, and the final power output of power amplifier descends, and caused the detector output voltage to descend.
The power of the broad band multicarrier gsm system control new problem that to be the GSM base station occurred in the evolution process of broadband by the arrowband, it also is the problem that broad band multicarrier GSM base station must solve.Because wide bandwidth base station has very big difference with traditional architecture of base station, traditional single carrier Poewr control method is difficult to be useful in the wide bandwidth base station, does not see the related data that relevant GSM multi-carrier power is controlled at present at home and abroad as yet.
Multi-carrier signal is the synthetic of each single-carrier signal, since the changeability of the frequency of each carrier wave and power and multicarrier composite signal envelope be difficult to predictability, be difficult to detect the power envelope of each carrier frequency by simple method, and the power envelope that detects each carrier wave in real time is the precondition that realizes the power closed-loop control, realizes that therefore the closed power control difficulty of multi-carrier signal is bigger.
The objective of the invention is in order to overcome the above bigger shortcoming of closed power control difficulty multi-carrier signal, and a kind of open Loop Power control solution based on the wide band GSM base station that provides, this method has utilized multicarrier sender transmission channel to have this inherent characteristic of superlinearity characteristic, it can make a plurality of carrier waves finish power control simultaneously, and can satisfy the requirement of time domain and frequency domain template simultaneously, the control of the power of each carrier wave is separate in addition, can change the transmitting power of the arbitrary time slot of any carrier wave flexibly and easily.
The technical scheme that realizes the object of the invention is: a kind of method of carrying out multi-carrier power control, adopt open-loop control method, and realize the power control of carrier wave by voltage-controlled attenuator in the synthetic back of multichannel, concrete steps are;
(1) data processor received power data and each carrier frequency information produce dynamic control of data and the climb and fall control data and the corresponding static control data of each carrier frequency;
(2) dynamic control of data and the static power control data of data processor each carrier frequency that will produce send to corresponding digital frequency converter and voltage-controlled attenuator, and digital frequency converter is realized the control of dynamic power grade;
(3) the digital frequency converter output signal obtains the multi-carrier signal of multichannel after synthetic by summation module, and this multi-carrier signal sends to adder;
(4) adder will send to digital to analog converter, filter through the multi-carrier signal of dynamic power grade control, send to voltage-controlled attenuator after digital-to-analogue conversion and filtering;
(5) voltage-controlled attenuator is finished power climbing control and static power control to the multi-carrier signal that receives in radio frequency part according to climb and fall control data and static power control data.
Be characterized in,
Described climb and fall control data is realized at analog domain;
Described dynamic power grade is done simple switching controls in numeric field;
Described rate of static power both can merge control with the dynamic power grade, can lump together control with the climb and fall curve again, can also realize with voltage-controlled attenuator separately.
Above-mentioned a kind of method, wherein, the method that described rate of static power and dynamic power grade merge control is: data processor is put rate of static power data and dynamic power control data together and is directly sent to each digital up converter and realize the control of power controlling grade, and climb and fall control then realizes static power control by voltage-controlled attenuator.
Above-mentioned a kind of method, wherein, the method that described rate of static power and climb and fall curve combine control is: data processor is put rate of static power data and climb and fall control data together and is sent to voltage-controlled attenuator and realize.
Above-mentioned a kind of method, wherein, the method that described rate of static power adopts voltage-controlled attenuator to realize separately is: data processor sends to voltage-controlled attenuator with the rate of static power data and realizes.
Above-mentioned a kind of method, wherein, the generation method of described climb and fall power control curve is: determine a kind of power control climbing curve earlier, then this curve data is stored in the data processor, call in actual the use again.
Above-mentioned a kind of method, wherein, different power grades has identical climbing control curve and identical climbing dynamic range.
The present invention is owing to adopted above technical measures, control separates with climb and fall with rate of static power, dynamic power grade, adopt a climb and fall control curve negotiating voltage-controlled attenuator to realize the power control of each carrier wave simultaneously, make it to guarantee that each power grade of each carrier wave satisfies the requirement of gsm protocol to time domain and frequency domain template simultaneously, the power grade control that can also guarantee each carrier wave is separate, to change the transmitting power of the arbitrary time slot of any carrier wave flexibly and easily.
Concrete characteristic performance of the present invention is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is that the closed power control of traditional single carrier GSM base station realizes theory diagram.
Fig. 2 is a kind of GSM base station multiple carrier output control device structural representation.
Method of the present invention is used for the power control of gsm wireless communication system base station, realizes the power control of broad band multicarrier GSM base station system.
Fig. 2 has provided the attainable multiple-carrier power control device block diagram of a kind of the present invention, multiple-carrier power control device of the present invention comprises n digital frequency converter 204-1～204-n, an adder 208, one first digital to analog converter 209, a filter 210, a voltage-controlled attenuator 211, one second digital to analog converter 212, a data processor 207.Digital up converter DUC204,205,206 both can realize modulation, filtering and the Digital Up Convert of baseband signal, also had the function of power control.Data processor 207 is used to receive the dynamic and static power controlling grade of each carrier frequency, produce dynamic power level data and climb and fall control data, then climb and fall control data and dynamic power level data are delivered to respectively among the second digital to analog converter DAC212 and the corresponding digital up converter DUC204-1～204-n and gone.Each digital frequency converter output to adder, order is input to first digital to analog converter, filter and voltage-controlled attenuator output again.
In the synthetic power control that afterwards realizes carrier wave by voltage-controlled attenuator of multichannel, its concrete steps are by the multicarrier open-loop power control method in the present invention;
(1) data processor 207 received power control datas and each carrier frequency information produce dynamic control of data and the climb and fall control data and the corresponding static control data of each carrier frequency.
(2) dynamic control of data of data processor 207 each carrier frequency that will produce and static power control data send to corresponding D UC204,205,206 and controlling attenuation device 211, DUC204,205,206 realize the control of dynamic power grades.
(3) digital up converter DUC204,205,206 output signals obtain the multi-carrier signal of multichannel after synthetic by summation module 210, and this multi-carrier signal sends to adder 208.
(4) 208 pairs of multi-carrier signals that receive of adder are realized power climbing control with a power control curve.Send to voltage-controlled attenuator 211 after the multi-carrier signal process DAC208 digital-to-analogue conversion of control of process dynamic power and power climbing control, filter 209 filtering.
(5) voltage-controlled attenuator 211 is finished static power control (static power control with climb and fall control separate control) to the multi-carrier signal that receives in radio frequency part according to the static power control data.
It is this inherent characteristic of carrying out synchronously that the present invention utilizes the climb and fall of each carrier frequency, with dynamic power grade and separately control of climb and fall.Wherein: the control of dynamic power ranking score carrier frequency, in the DUC204,205,206 of each carrier frequency, finish the simple switching between power grade.Described rate of static power both can merge control with the dynamic power grade, can lump together control with the climb and fall curve again, can also realize with voltage-controlled attenuator separately.Climb and fall control realizes by the voltage-controlled attenuator of control DAC212 back, then needs N bar (N is the rate of static power number of base station support) climb and fall control data curve altogether if rate of static power and climb and fall control put together.The generation method of this climb and fall power control curve is: pre-determine a kind of power control climbing curve earlier, then this curve data is stored in the data processor, call in actual the use again.The method that rate of static power and climb and fall curve is combined control is: data processor is put rate of static power data and climb and fall control data together and is sent to voltage-controlled attenuator and realize.Different power grades has identical climbing control curve and identical climbing dynamic range.If static power control is placed on numeric field control by the another one voltage-controlled attenuator or with the dynamic power grade, then only need a climb and fall curve to get final product.The method that rate of static power and dynamic power grade merge control is: data processor is put rate of static power data and dynamic power control data together and is directly sent to each digital up converter and realize the control of power controlling grade, and climb and fall control then realizes static power control by voltage-controlled attenuator.Work hours receive carrier frequency and power grade information according to processor 207, the information that needs by power control after handling sends in the corresponding module, produce " V " deltoid by digital to analog converter DAC212 simultaneously and remove to control voltage-controlled attenuator, voltage-controlled attenuator 211 and DAC212 should have enough dynamic ranges to be used for power control climb and fall.
Though being controlled at, the power among the digital frequency converter DUC has sudden change when power grade switches, and the control curve of voltage-controlled attenuator is identical at different power grades, so also there is sudden change in the curve after overpower control at the power grade switching point, but because climb and fall can guarantee the dynamic range that reaches enough, so emulation and experimental result show that the influence that this sudden change is controlled effect to final power can ignore.For discontinuous emission (DTX), can export by the DUC that turn-offs this carrier frequency and reach this purpose.
As previously mentioned, Poewr control method involved in the present invention has the following advantages:
1, power is controlled the data storage amount seldom, and its data storage can be finished by FPGA, can suitably fall Low cost also will reduce the board design area.
2, only with a climb and fall control curve, the different capacity grade have identical climbing control curve with mutually Climbing dynamic range has together improved the uniformity of power control, avoids the different capacity grade to need different capacity Curve and the test that causes and produce difficulty.
3, adopted the core devices of voltage-controlled attenuator as power control, usually the attenuation of voltage-controlled attenuator Present the linear relation of myopia with control voltage, so only need DAC according to voltage of certain law generation Curve can be finished power control. In order to improve power control performance, this method needs the decay of TCH test channel Characteristic is then by correcting the non-linear of attenuator the method for power control data predistortion.
4, the position of climb and fall power control selects to have very big flexibility, both can be selected in position shown in Figure 2 Put, also can between the if-to-rf part, select.
5, rate of static power both can merge control with the dynamic power grade, can close with the climb and fall curve again Control can also realize with voltage-controlled attenuator separately together.
6, the control accuracy height of power grade.
Claims (6)
1, a kind of method of wideband multiple-carrier base station in digital mobile communication system power control adopts open-loop control method, realizes the power control of carrier wave by voltage-controlled attenuator in the synthetic back of multichannel, and concrete steps are;
(1) data processor received power data and each carrier frequency information produce dynamic control of data and the climb and fall control data and the corresponding static control data of each carrier frequency;
(2) dynamic control of data and the static power control data of data processor each carrier frequency that will produce send to corresponding digital frequency converter and voltage-controlled attenuator, and digital frequency converter is realized the control of dynamic power grade;
(3) the digital frequency converter output signal obtains the multi-carrier signal of multichannel after synthetic by summation module, and this multi-carrier signal sends to adder;
(4) adder will send to digital to analog converter, filter through the multi-carrier signal of dynamic power grade control, send to voltage-controlled attenuator after digital-to-analogue conversion and filtering;
(5) voltage-controlled attenuator is finished power climbing control and static power control to the multi-carrier signal that receives in radio frequency part according to climb and fall control data and static power control data.
It is characterized in that,
Described climb and fall control data is realized at analog domain;
Described dynamic power grade is done simple switching controls in numeric field;
Described rate of static power both can merge control with the dynamic power grade, can lump together control with the climb and fall curve again, can also realize with voltage-controlled attenuator separately.
2, the method for a kind of wideband multiple-carrier base station in digital mobile communication system power control according to claim 1, it is characterized in that, the method that described rate of static power and dynamic power grade merge control is: data processor is put rate of static power data and dynamic power control data together and is directly sent to each digital up converter and realize the control of power controlling grade, and climb and fall control then realizes static power control by voltage-controlled attenuator.
3, the method for a kind of wideband multiple-carrier base station in digital mobile communication system power control according to claim 1, it is characterized in that the method that described rate of static power and climb and fall curve combine control is: data processor is put rate of static power data and climb and fall control data together and is sent to voltage-controlled attenuator and realize.
4, the method for a kind of wideband multiple-carrier base station in digital mobile communication system power control according to claim 1, it is characterized in that the method that described rate of static power adopts voltage-controlled attenuator to realize separately is: data processor sends to voltage-controlled attenuator with the rate of static power data and realizes.
5, the method for controlling according to a kind of wideband multiple-carrier base station in digital mobile communication system power in the claim 1, it is characterized in that, the generation method of described climb and fall power control curve is: determine a kind of power control climbing curve earlier, then this curve data is stored in the data processor, calls again in actual the use.
6, the method for a kind of wideband multiple-carrier base station in digital mobile communication system power control according to claim 1 is characterized in that, different power grades has identical climbing control curve and identical climbing dynamic range.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011054476A CN1162025C (en) | 2001-02-27 | 2001-02-27 | Power control device and method for wideband multiple-carrier base station in digital mobile communication system |
| PCT/CN2001/001508 WO2002091770A1 (en) | 2001-02-27 | 2001-10-26 | The apparatus and method for power control in digital mobile communication system broadband multi-carrier base station |
| US10/469,192 US7336726B2 (en) | 2001-02-27 | 2001-10-26 | Apparatus and method for power control in digital mobile communication system broadband multi-carrier base station |
| EP01274209A EP1365606A4 (en) | 2001-02-27 | 2001-10-26 | The apparatus and method for power control in digital mobile communication system broadband multi-carrier base station |
| ZA200306451A ZA200306451B (en) | 2001-02-27 | 2003-08-19 | The apparatus and method for power control in digital mobile communication system broadband multi-carrier base station. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011054476A CN1162025C (en) | 2001-02-27 | 2001-02-27 | Power control device and method for wideband multiple-carrier base station in digital mobile communication system |
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| Publication Number | Publication Date |
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| CN1371223A CN1371223A (en) | 2002-09-25 |
| CN1162025C true CN1162025C (en) | 2004-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011054476A Expired - Fee Related CN1162025C (en) | 2001-02-27 | 2001-02-27 | Power control device and method for wideband multiple-carrier base station in digital mobile communication system |
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| Country | Link |
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| CN (1) | CN1162025C (en) |
| ZA (1) | ZA200306451B (en) |
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| CN102224754B (en) * | 2011-06-29 | 2013-04-17 | 华为技术有限公司 | Adjusting method and apparatus of signal emission power |
| CN103326979B (en) * | 2012-03-21 | 2016-05-25 | 华为技术有限公司 | A kind of multicarrier receiver and method |
| CN111147412B (en) * | 2019-12-25 | 2021-11-09 | 三维通信股份有限公司 | Predistortion processing device, signal transmission system and predistortion processing method |
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- 2001-02-27 CN CNB011054476A patent/CN1162025C/en not_active Expired - Fee Related
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- 2003-08-19 ZA ZA200306451A patent/ZA200306451B/en unknown
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| ZA200306451B (en) | 2004-09-29 |
| CN1371223A (en) | 2002-09-25 |
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