CN100539458C - The method for designing of radio frequency automatic power control module and circuit thereof in the TD-SCDMA terminal - Google Patents
The method for designing of radio frequency automatic power control module and circuit thereof in the TD-SCDMA terminal Download PDFInfo
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- CN100539458C CN100539458C CNB2006100545263A CN200610054526A CN100539458C CN 100539458 C CN100539458 C CN 100539458C CN B2006100545263 A CNB2006100545263 A CN B2006100545263A CN 200610054526 A CN200610054526 A CN 200610054526A CN 100539458 C CN100539458 C CN 100539458C
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Abstract
The present invention relates to the method for designing and the circuit thereof of radio frequency automatic power control module under the terminal burst mode in the TD-SCDMA wireless telecommunication system.The transmitting power of user terminal is progressively adjusted to required performance number by the time interval more than 2 times or 2 times.User terminal is calculated required transmission power level according to the intensitometer of the signal that receives, simultaneously, calculate and adjust user terminal and reach step-length number of times, the time span of step-length or the parameters such as performance number that each step-length increases or reduces that required transmission power level needs, the transmitting power of controlling user terminal thus progressively increases it or reduces to required transmission power level.Adopt method for designing of the present invention can guarantee that promptly user terminal reaches required performance number in the official hour pattern plate bolster, can avoid performance number to go out the possibility that time template frame phenomenon occurs in a flash again at certain.
Description
Technical field
The present invention relates to a kind of method for designing of wireless communication terminal automatic power control module, particularly the method for designing of radio frequency automatic power control module under the terminal burst mode in the TD-SCDMA wireless telecommunication system (hereinafter to be referred as the TD-SCDMA system).Simultaneously, the invention still further relates to radio frequency automatic power control circuitry under the terminal burst mode in the TD-SCDMA system that realizes method for designing of the present invention.
Background technology
In the TD-SCDMA system, the distance of residing position of different user terminals and base station is inequality, if this moment, different user terminal adopted identical power to base station transmit signals, because its far and near different with base station distance, the power during signal arrival base station is also inequality.Power when the signal of launching with the near user terminal of base station distance arrives the base station is bigger, and the power the when signal of launching with base station distance user terminal far away arrives the base station is less, forms mutually and disturbs, and causes what is called " near-far interference ".In addition, equate could normal despreading for the average power of the signal launched of all user terminals of TD-SCDMA system requirements when arriving base station receiver.Therefore, in the TD-SCDMA system, be provided with automatic power control system specially,, the average power of signal when arriving base station receiver of its emission equated in order to adjust the power that different user terminals transmits.
Automated power control is a technical indicator weighing wireless communication signal channel performance quality, and directly reflection system regulates the level that user's terminal transmitting power reaches suitable link characteristics.Different with other two FDD 3G wireless telecommunication systems, defined strict power and time relationship in the TD-SCDMA system testing standard, also claim PvT (being designated hereinafter simply as PvT).The PvT test guarantees that the radio frequency burst of TD-SCDMA system drops in the specific time template, is an important indicator of TD-SCDMA system.
The roughly flow process of user terminal radio frequency automated power control is in the TD-SCDMA system: user terminal is according to receiving that the intensity of signal sends data to the digital baseband processing module, digital baseband is handled automatic power control module (hereinafter to be referred as APC) in (hereinafter to be referred as DBB) module according to receiving that the intensitometer of signal calculates the required transmission power level of user terminal and send it to Analog Baseband module (hereinafter to be referred as ABB), then, ABB is according to this size of data control radio-frequency module (hereinafter to be referred as RF), at last, the RF module is adjusted transmitting power to required transmission power level.In brief, user terminal is the transmitting power size that draws oneself up according to the signal strength signal intensity that receives, thereby realizes the signal that the user the launched purpose that average power equates when arriving base station receiver of diverse location.In the prior art, automated power control in the DBB module is according to the required transmission power level of intensity decision user terminal of receiving signal, and the power data value sent to ABB, ABB controls the size of RF transmitted power more then, and its method that adopts is the size of so-called " straight up and down " or the processing method control user terminal transmitted power that claims " settling at one go ".That is to say that APC directly makes the transmitting power of user terminal reach needed value by once just adjusting.The drawback of this control method be may emergent power when working control value go out the time template frame in a flash at certain, the burst that causes one or more time slots causes interference to the user of other time slot.
Summary of the invention
In order to overcome the drawback that traditional automatic power control method brings, make the power curve of output of user terminal and ideal curve coincide better, method for designing of the present invention has been carried out optimal design to automatic power control module.Basic design philosophy is: the transmitting power of user terminal is by the time span more than 2 times or 2 times (being designated hereinafter simply as step-length), and the radio-frequency emission power of progressively adjusting user terminal reaches required performance number.And the performance number that the number of times of step-length (hereinafter to be referred as exponent number), step-length or each step-length increase or reduce can be identical or inequality.User terminal calculates required transmission power level according to the signal strength signal intensity that receives, simultaneously, calculate and adjust the parameters such as performance number that exponent number, step-length or each step-length that user terminal reaches required transmission power level and need increase or reduce, the transmitting power of controlling user terminal thus progressively increases it or reduces to required transmission power level, after the user terminal communication finished, inverted sequence progressively reduced its transmission power level successively again.Adopt method for designing of the present invention can guarantee that promptly user terminal reaches required performance number in the official hour pattern plate bolster, can avoid performance number to go out the possibility that time template frame phenomenon occurs in a flash again at certain.The size of each data that send, what and time span can be controlled flexibly by register independently, the size of guaranteeing transmitted power like this uprises or step-down gradually, thereby makes on the PvT curve that the slope of line better meets in the scope of TD-SCDMA system regulation between per two consecutive number strong points.
For realizing method for designing of the present invention, be provided with three registers in user terminal radio frequency automatic power control circuitry, that is: step length register (being APC_STEP_LENGTH) is used for being provided with how long (being the time span or the step-length of each adjustment) and sends next performance number, exponent number register (being APC_STEP_COUNTER) and be used to be provided with performance number and the performance number sized registers (being APC_STEP_VALUE) that step-length (being exponent number) several times just can reach expection and be used to be provided with the performance number size that step-length increased or reduced each time.By the cooperatively interacting and controlling of above-mentioned three registers, the transmitted power that realizes method for designing control user terminal transmitter radio frequency of the present invention progressively uprises or the purpose of step-down.
Description of drawings
Accompanying drawing 1 is traditional " straight up and down " or the automated power control PvT block diagram that claims " settling at one go "
Accompanying drawing 2 is method for designing automated power control PvT block diagrams of the present invention
Accompanying drawing 3 is method for designing automatic power control circuitry module diagrams of the present invention
Accompanying drawing 4 is method for designing automated power control embodiment 3 rank automated power control PvT block diagrams of the present invention
The present invention is described further below in conjunction with the drawings and specific embodiments.
Fig. 1 is the automated power control PvT block diagram of traditional " straight up and down " or " settling at one go ", 1 is the time module frame among the figure, the 2nd, and power control curve. As seen from the figure, user terminal is according to receiving Signal strength signal intensity calculate required transmission power level, just directly make user terminal by once adjusting Transmitting power reaches needed value. The drawback of this control method is may occur when working control Performance number is gone out in a flash the time template frame at certain, causes the burst of one or more time slots to it The user of its time slot causes interference.
Fig. 2 is method for designing burst automated power control PvT block diagram of the present invention, and 1 is the time mould among the figure The piece frame, the 2nd, power control curve, the 3rd, transmitting power changes to the duration after the maximum, and the 4th, the user is eventually Hold required transmission power level, the 5th, adjust each time required time span (being step-length), the 6th, every The performance number that inferior step-length adjustment increases or reduces. As seen from the figure, the transmitting power of user terminal is by 2 Adjustment inferior or more than 2 times make its transmitting power reach required performance number. And, exponent number, step The performance number that long or each step-length increases can be identical or not identical. User terminal is according to reception To the intensitometer of signal calculate required transmission power level, simultaneously, calculate and adjust user terminal and reach The performance number that exponent number, step-length or the each step-length that needs to required transmission power level increases or reduce Etc. parameter, the transmitting power of controlling thus user terminal progressively increases it or reduces to required emission Performance number, after the user terminal communication finished, inverted sequence progressively reduced its transmission power level successively again. Aobvious The three of the performance number that so, can be in advance exponent number, step-length and each step-length adjustment is increased or reduce it One or two or three be designed to fixed value, to simplify the calculating of user terminal, simplify automatic merit Rate control circuit. Adopt method for designing of the present invention can guarantee that namely user terminal is in the official hour template Reach required performance number in the frame, it is existing to avoid again performance number to go out in a flash the time template frame at certain Resemble the possibility of appearance.
Fig. 3 method for designing automatic power control circuitry of the present invention module diagram as seen from the figure, has been set three registers in burst mode radio frequency automatic power control module APC the inside, that is:
Step length register (being APC_STEP_LENGTH): be used for being provided with and how long (promptly adjust required time length or step-length each time) and send next performance number;
Exponent number register (being APC_STEP_COUNTER): be used to be provided with the performance number that step-length (being exponent number) several times just can reach expection;
Performance number sized registers (being APC_STEP_VALUE): be used to be provided with the performance number that each step-length adjustment increases or reduces.
Timing controling signal APC_FLAG is used for controlling the time that sends the APC data.When APC receives the control signal (being that APC_FLAG becomes 1 from 0) of timing control module transmission, exponent number register (being APC_STEP_COUNTER) at first is provided with the performance number that needs several steps (being exponent number) just can reach expection, step length register (being APC_STEP_LENGTH) is provided with the required time span of each adjustment (being step-length), and performance number sized registers (being APC_STEP_VALUE) is provided with the performance number that each step-length adjustment increases or reduces.Then, APC sends a less performance number (i.e. the performance number on first rank) earlier, after the time span through step-length (APC_STEP_LENGTH), send again one with the previous performance number (i.e. the performance number on second rank) that increases of comparing slightly, after passing through the time span of step-length (APC_STEP_LENGTH) again, send again one with the previous performance number (i.e. the performance number on the 3rd rank) that increases of comparing slightly, the rest may be inferred, the performance number that user terminal sends progressively increases, up to reaching required performance number.And when control signal finished (being that APC_FLAG becomes 0 from 1), APC was again according to the performance number of identical exponent number, step-length (APC_STEP_LENGTH) and each step-length, and inverted sequence progressively reduces performance number, up to returning to original performance number.Obviously, the performance number of expection, step-length (APC_STEP_LENGTH), the performance number (APC_STEP_LENGTH) that each step-length adjustment increases or reduces and the needed step number of performance number (being exponent number) that reaches expection all are to determine according to calculating apart from signal strength signal intensity far and near and that receive of user terminal and base station (APC_STEP_COUNTER).Therefore, can guarantee that promptly user terminal reaches required performance number in the official hour pattern plate bolster, can avoid performance number to go out the possibility that time template frame phenomenon occurs in a flash again at certain.
Specific embodiment
Fig. 4 is the automated power control PvT block diagram of a specific embodiment of method for designing of the present invention, 1 is the time module frame among the figure, the 2nd, power control curve, the 3rd, transmitting power changes to the duration after the maximum, the 4th, the transmission power level that user terminal is required, the 5th, step-length degree, the 6th, the performance number that each step-length adjustment increases or reduces.In this example, the exponent number of exponent number register (APC_STEP_COUNTER) is 3, promptly needs to make it finally reach required performance number by the transmitting power that three step-lengths progressively increase user terminal.Concrete process is: when APC_FLAG when 0 becomes 1, the APC module sends data STEP1, after passing through the time span of step-length (APC_STEP_LENGTH) again, the APC module sends data STEP2, after passing through the time span of step-length (APC_STEP_LENGTH) again, the APC module sends data STEP3, and ABB receives after these data successively, the transmitting power that it just controls RF just becomes STEP1, STEP2 successively from STEPO (initial value), becomes STEP3 at last; And when APC_FLAG when 1 becomes 0, the expression radio frequency is sent completely, and just need transmitting power be recovered, the APC control module will send data: STEP2, STEP1, STEPO successively to ABB at this moment, returns to original transmitting power up to RF.
From above example as can be known, the transmitting power of user terminal progressively increases, rather than so-called " straight up and down " or " settling at one go ", can the emergent power value not go out the time template frame in a flash, cause the burst of one or more time slots the user of other time slot to be caused the phenomenon of interference at certain.
The concrete application circuit of realizing method for designing thinking of the present invention can have more selection, and Fig. 3 is exactly the concrete automatic power control circuitry module diagram of using of method for designing of the present invention.Three registers have been set in APC control module the inside in this example, that is: step length register (being APC_STEP_LENGTH) is used for being provided with how long (being that each adjusts the time interval or step-length) sends next performance number; Exponent number register (being APC_STEP_COUNTER) is used to be provided with the performance number (being exponent number) that step-length several times just can reach expection; Performance number sized registers (being APC_STEP_VALUE) is used to be provided with the performance number that each step-length adjustment increases or reduces.Obviously, if the time span of adjusting each time is set to fixed value (being that step-length is a fixed value), then can save step length register (being APC_STEP_LENGTH).In like manner, if the performance number that each step-length adjustment increases or reduces is set to fixed value or exponent number is set to fixed value, then can save performance number sized registers (being APC_STEP_VALUE) or exponent number register (being APC_STEP_COUNTER).But these change spirit and the essence thereof that does not break away from method for designing of the present invention, ought to belong to the claim protection range of method for designing of the present invention and circuit thereof.
The present invention also can have other various embodiments; under the situation of spirit that does not deviate from method for designing of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes or distortion according to method for designing of the present invention, but these corresponding changes or distortion all belong to the claim protection range of method for designing of the present invention.
Claims (3)
1, a kind of method of work of wireless communication terminal automatic power control module, user terminal is according to receiving that the intensity of signal sends data to the digital baseband processing module of user terminal, automatic power control module APC in the digital baseband processing module calculates the required transmission power level of user terminal according to the intensitometer of receiving signal and sends it to the Analog Baseband modules A BB of user terminal, then, Analog Baseband modules A BB is according to the radio-frequency module RF of this size of data control user terminal, at last, radio-frequency module RF adjusts transmitting power to required transmission power level, it is characterized in that: the transmitting power of user terminal is by progressively adjusting to required performance number more than 2 times or 2 times, wherein, the number of times of adjusting is called exponent number, and the time span that power remains unchanged after each the adjustment is called step-length.
2, according to the described method for designing of claim 1, it is characterized in that: the performance number that exponent number, step-length or each step-length adjustment increase or reduce can be fixed or changed.
3, a kind of wireless communication terminal automatic power control circuitry, the digital baseband processing module, the automatic power control module in the digital baseband processing module, the Analog Baseband module of user terminal and the radio-frequency module of user terminal that comprise user terminal, it is characterized in that: the automatic power control module in the digital baseband processing module comprises: the thrin of step length register APC_STEP_LENGTH, exponent number register APC_STEP_COUNTER and performance number sized registers APC_STEP_VALUE or two or three, wherein:
The function of user terminal digital baseband processing module comprises that the intensity of the signal that will receive sends automatic power control module to;
The function of the automatic power control module in the user terminal digital baseband processing module comprises according to receiving that the intensitometer of signal calculates the required transmission power level of user terminal;
The function of user terminal Analog Baseband module comprises the transmitting power according to the required transmission power level control radio-frequency module of user terminal;
The function of user terminal radio-frequency module comprises according to required transmission power level launches information to network;
In addition:
Step length register APC_STEP_LENGTH is used for being provided with how long send next performance number, and wherein, the time of setting is the time span or the step-length of each adjustment;
Exponent number register APC_STEP_COUNTER is used to be provided with the performance number that step-length several times just can reach expection, and wherein, the number of times of setting is exponent number;
Performance number sized registers APC_STEP_VALUE is used to be provided with the performance number size that step-length increased or reduced each time.
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| CN101582727B (en) * | 2008-05-16 | 2013-10-09 | 电信科学技术研究院 | Method and device for time template measurement |
| CN101965041B (en) * | 2009-07-23 | 2013-11-06 | 展讯通信（上海）有限公司 | Adjustment method and device of TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) receive automatic gain control |
| CN101765142B (en) * | 2009-12-25 | 2015-03-04 | 上海闻泰电子科技有限公司 | Method and device for preventing PVT from exceeding standard during GPRS multi-time slot continuous emission |
| CN101827435A (en) * | 2010-03-17 | 2010-09-08 | 中兴通讯股份有限公司 | Energy saving method, access entity and user device for communication system device |
| CN105208634B (en) * | 2014-06-30 | 2019-01-22 | 展讯通信（上海）有限公司 | A kind of RF receiving/transmission device and method and mobile terminal |
| CN110267336A (en) * | 2019-05-14 | 2019-09-20 | 惠州Tcl移动通信有限公司 | Antenna transmission power control method, mobile terminal and storage medium |
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