CN100469182C - Method and system for outer ring power control based on selfadaptive error rate measuring - Google Patents

Method and system for outer ring power control based on selfadaptive error rate measuring Download PDF

Info

Publication number
CN100469182C
CN100469182C CN 02143501 CN02143501A CN100469182C CN 100469182 C CN100469182 C CN 100469182C CN 02143501 CN02143501 CN 02143501 CN 02143501 A CN02143501 A CN 02143501A CN 100469182 C CN100469182 C CN 100469182C
Authority
CN
China
Prior art keywords
sir
formula
target
ber
lt
Prior art date
Application number
CN 02143501
Other languages
Chinese (zh)
Other versions
CN1486100A (en
Inventor
徐志宇
赵柏峻
Original Assignee
Ut斯达康(中国)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ut斯达康(中国)有限公司 filed Critical Ut斯达康(中国)有限公司
Priority to CN 02143501 priority Critical patent/CN100469182C/en
Publication of CN1486100A publication Critical patent/CN1486100A/en
Application granted granted Critical
Publication of CN100469182C publication Critical patent/CN100469182C/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/12Outer and inner loops
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/20TPC being performed according to specific parameters using error rate

Abstract

本发明提供一种基于BER测量的自适应外环功率控制方法和系统。 The present invention provides a BER measurements based adaptive outer loop power control method and system. 该方法包括如下步骤:在解码器前端测量BER来获得BER测量值;基于测量的BER值来调整SIR目标值;以及将SIR目标值与SIR测量值相比较,并生成功率控制命令。 The method comprising the steps of: front end of the decoder BER BER is measured to obtain measured values; SIR target is adjusted based on the measured value of BER; SIR target, and compared with the SIR measurement value, and generate power control commands. 通过使用该方法可显著降低在外环功率控制中所需的测量时间,同时该方法还不需要知道BER与SIR之间的具体关系,因而易于实现。 By using this method can significantly reduce the outer loop power control in the desired measurement time and the process does not need to know the specific relationship between the BER and the SIR, and thus easy to implement.

Description

一种基于误码率測量的自适应外环功率控制方法和系统 Adaptive outer loop power control method and system based on the measured BER

技术领域 FIELD

本发明涉及移动通信领域,更具体地说,涉及在第三代移动通信 The present invention relates to the field of mobile communications, and more particularly, relates to a third generation mobile communication

系统中基于误码率BER測量的自适应外环功率控制方法和系统. 背景技术 System adaptive outer loop power control method and system based on the measured bit error rate BER BACKGROUND

在直接扩頻/码分多址(DS/CDMA)移动通信系统中,传统的瑞克(RAKE)接收机需要严格的功率控制技术以获得满意的性能,在第三代移动通信系统,如UMTS、 WCDMA、 cdma2000等系统中, 功率控制分为开环功率控制和闭环功率控制。 In the direct spreading / code division multiple access (DS / CDMA) mobile communication system, a conventional rake (the RAKE) receiver requires strict power control techniques to obtain satisfactory performance, the third generation mobile communication systems, such as UMTS , WCDMA, cdma2000 systems, power control is divided into open loop power control and closed loop power control. 开环控制技术是对信道衰落的一种粗咯估计,而闭环功率控制能有效地跟踪信号的快速袭落. 闭环功率控制包括两部分:快速内环控制和外环控制。 Open-loop control technique is a channel fading slightly rough estimation, the closed loop power control can effectively track fast passage signal falling closed loop power control consists of two parts: the fast inner loop control and outer loop control. 快速内环控制通过一系列功率调整指令来调整用户设备(UE)的发射功率,以达到当前目标信噪比(SIR).而外环功率控制通过调整目标信噪比(SIR) 来使接收机获得合适的性能指标,如误块率(BLER)和误码率(BER). Fast inner control to adjust the user equipment through a series of power adjust commands (UE) transmit power to achieve a target current signal to noise ratio (SIR). While the outer loop power control by adjusting a target SIR (SIR) for the receiver to obtaining suitable performance metrics, such as the block error rate (BLER) and bit error rate (BER).

在Harri Holma和Antti Toskala的"WCDMA for UMTS ", John Wiley & Sons, 2001中讲到,SIR目标值需要根据UE的移动速度和多径衰落环境的变化而进行调整.接收功率变化越大,SIR目标值越高. 如果设定固定的SIR目标值,則容易使得通信质量过髙或过低,从而导致不必要的功率提升和容量损耗.所以,外环功率控制的目的是提供所需质量:既不太差,也不太好。 In the Harri Holma and Antti Toskala "WCDMA for UMTS", John Wiley & Sons, 2001 mentioned, SIR target value according to the movement speed of the UE needs to multipath fading and changes in the environment can be adjusted. Larger received power variation, SIR If a higher target SIR target set fixed, it is easy so that the communication quality is too low or too Gao, thus leading to unnecessary loss of capacity and power boost therefore an object of outer loop power control is to provide the required quality.: neither bad nor good. 太差,满足不了用户的通话质量; 太好,則浪费容量,最终使得网络容易拥塞而导致阻塞率过高,降低网络的性能. Bad, can not meet the call quality; good is wasted capacity, so that ultimately lead to high network congestion easily blocking rate, reduced network performance.

困1是现有技术中反向闭环功率控制的实现过程。 1 is trapped prior art implementation reverse closed loop power control. 上行接收机对接收到的多径信号经过瑞克接收机进行合并.经过瑞克接收机合并的 Upstream receiver multipath signals received via the RAKE receiver combined. The combined rake receiver via

信号分为两路,其中一路经过解交织器106和解码器105分別进行解交织和解码,所谓交织/解交织,又称为交错/解交错,可用于把突发错误分散成随机的独立差错从而容易被糾错码来纠正,经过解码的信号在BLER/BER測量单元101中测量BLER或BER,以此作为外环功率控制算法单元102的输入参数.另外一路经过用于測量信号SIR的SIR测量器104,得到SIR測量值.然后在比较器103中将外环功率控制算法单元102的输出参数SIR目标值与SIR測量值相比较,由这两个值之间的关系生成功率控制命令(TPC) 。 Signal into two, where all the way through the deinterleaver 106 and decoder 105 respectively decodes and deinterleaves independent errors, the so-called interleaving / deinterleaving, also known as interleaving / deinterleaving, burst errors can be used to randomly dispersed thereby easily corrected by error correction code, the decoded signal or the BER measured BLER BLER / BER measurement unit 101, an input parameter as the outer loop power control algorithm unit 102. Also the way through the signals for measuring the SIR SIR measurer 104, SIR measurement value is obtained. then the comparator 103 in the outer loop power control algorithm parameter output unit 102 compared with the target SIR SIR measurement value, generating a power control command from the relationship between these two values ​​( TPC). TPC通过公共信道发送给UE,用于上行快速内环功率控制.例如,当SIR测量值》SIR 目标值时,TPC--l,即控制UE降低发射功率;当SIR测量值《SIR 目标值时,TPC-1,即控制UE提高发射功率. TPC transmitted through a common channel to the UE, an uplink inner loop fast power control, for example, when the SIR measurement value "is the SIR target, TPC - l, i.e. UE reduce transmit power control; and when SIR measurement value." SIR target value , TPC-1, i.e. UE increase the transmission power control.

通常在測量BLER时使用循环冗余校验码(CRC)来校验接收目标数据块的正误情况.3GPP(Third Generations Partnership Project) 规范中的算法是基站控制器每接收到一个数据块,就对SIR目标值进行一次更新,具体算法如下: Commonly used cyclic redundancy check code (CRC) to verify at the time of measurement correctness BLER target data block is received .3GPP (Third Generations Partnership Project) specification of each algorithm is the base station controller receives a data block on the right SIR target value update, the specific algorithm is as follows:

IF CRC校验OK IF CRC check OK

Step—down -BLER—target * Step—size; SIR一target (n+1) = SIR一target(n) - St印一down; ELSE Step-down -BLER-target * Step-size; SIR a target (n + 1) = SIR a target (n) - St printing a down; ELSE

Step—up- Step—size画BLER一target * Step—size; SIR—target (n+1) - SIR一target(n) + Step—up; END Step-up- Step-size Videos a BLER target * Step-size; SIR-target (n + 1) - SIR a target (n) + Step-up; END

其中,Step—si狄是目标SIR调整的步长值,如ldB, BLERJarget 是该用户业务的目标BLER值.还有一些其他的算法,可参见中国专利CN1357985和CN1360410,它们都是根据误帧率(FER)和误块率(BLER)来作为外环功率控制的输入参数的. Wherein, Step-si Di is the target SIR adjustment step value, such as ldB, BLERJarget BLER target value of the user traffic. There are other algorithms can be found in Chinese patent CN1357985 and CN1360410, which are based on a frame error rate (FER), and the block error rate (BLER) as the input parameters of the outer loop power control.

但是,上述采用BLER作为外环功率控制的输入参数在高看量数据(例如,3GPP TS 23.107: "QoS Concept and Architecture"中所要求的BER-10勺传输时会带来一些问题.对应于低的BER, BLER同 However, using the above-described BLER as outer loop power control in a high input parameter to see the amount of data (e.g., 3GPP TS 23.107: cause some problems when BER-10 transmission spoon "QoS Concept and Architecture" in the claims corresponds to a low. the BER, BLER with

样也很低,这样就需要一个相当长的时间来进行准确的測量.例如, Sample is very low, thus requiring a relatively long time to carry out accurate measurement. For example,

对于一个传输速率为32kbit/s,数据帧为80咖(包括交织深度)的业务,相对于BER目标值-l(T6,其肖标BLER值要求小于l(T3。这时, 为了获得可靠的测量精度,其BLER测量械数一般要大于5000幀, 即400秒.这样长的测量时间在实际应用中是不现实的.所以,对高质量业务可能需要利用一些软信息,例如,在多循环Turbo解码的中间BLER测量值或者在巻积码和Reed-Solomon码的中间BLER辨量值,相关内容可参见H. Kawai, H. Suda和F. Adachi的,,Outer-loop control of target SIR for fast transmit power control in turbo-coded W-CDMA mobile radio", Electronics Letters, vol. 35, no. 9, pp. 699-701, Mar. 1999.但是,这些软信息在3GPP标准是可选参数,无线网络控制器(RNC)并不总能获得这些软信息. For a transmission rate of 32kbit / s, the data frame 80 as coffee (including interleave depth) service, with respect to the target BER -l (T6, having a Shore scale value BLER requirement is less than l (T3. In this case, in order to obtain a reliable the measurement accuracy, the number of which mechanical BLER measurement is generally greater than 5000, i.e., 400 seconds. such long measurement time is in practice unrealistic. Therefore, for the quality of some services may require the use of soft information, e.g., in a multi-cycle Turbo decoding intermediate BLER measurement value or intermediate convolving code and Reed-Solomon code value of BLER identified, the content can be found in H. Kawai, H. Suda and F. Adachi of ,, Outer-loop control of target SIR for fast transmit power control in turbo-coded W-CDMA mobile radio ", Electronics Letters, vol. 35, no. 9, pp. 699-701, Mar. 1999. However, the soft information is optional in the 3GPP standard, the radio network controller (RNC) does not always get the soft information.

因此,需要一种外环功率控制算法,以便解决在高质量业务下BLER測量时间长的问題. Therefore, outer loop power control algorithm, in order to address high BLER measurement business problem for a long time.

另夕卜,在G. Fredrik和B. Jonas的Improved performance using nonlinear components in power control algorithms " , VTC99, Vol. 2, 1999, pp 1276-1280,以及G. Fredrik和B. Jonas的Estimation and Outer loop power control in Cellular Radio Systems " ACM Wireless Networks, 2001中提到了基于分析BER与SIR之间的非线性关系的外环功率控制算法,但由于衰落信道环境的不同,加上编码与解码的影响,BER与SIR之间是非线性关系,想获得它们之间的确定关系是十分复杂的, Bu the other evening, in G. Fredrik and B. Jonas's Improved performance using nonlinear components in power control algorithms ", VTC99, Vol. 2, 1999, pp 1276-1280, and G. Fredrik and B. Jonas of Estimation and Outer loop power control in Cellular Radio Systems "ACM Wireless Networks, 2001 mentioned outer loop power based on the analysis of the nonlinear relationship between the BER and SIR control algorithm, but since the different fading channel environment, coupled with the encoding and decoding, BER is a non-linear relationship between SIR, want to get to determine the relationship between them is very complex,

因此,需要一种外环功率控制算法,它不需要知道BER和SIR之间的确切关系,即可实现有效的外环功率控制. Therefore, an outer loop power control algorithm, it does not need to know the exact relationship between the BER and SIR, you can achieve efficient outer loop power control.

发明内容 SUMMARY

考虑到现有技术中的上迷问趙,本发明提供了一种基于BER测量的自适应外环功率控制方法,包括如下步稞:a.測量BER来获得BER 測量值;b.基于測量的BER值来调整SIR目标值;c.将SIR目标 Taking into account the above-Q Zhao prior art, the present invention provides an adaptive outer loop power control method based on measurement of the BER, wheat comprising the steps:. A BER BER is measured to obtain a measured value; B based on the measured. SIR target value to adjust BER; C SIR target.

值与SIR測量值相比较,并生成功率控制命令,该方法的特征在于: 所述测量步壤包括測量解码器前端的BER的步骤. SIR value is compared with the measured value, and generates power control commands, the method being characterized in that: the step comprises measuring the BER soil decoder front end of said measurement step.

本发明还提供一种基于BER測量的自适应外环功芈控制系统,包括:BER测量装置,用于获得BER測量值;外环功率控制装置,用于根据BER測量值调整SIR目标值;以及比较器,用于将SIR目标值与SIR测量值相比较,并产生功率控制命令,该系统的特征在于:所述BER測量装置位于信道解码器前端. The present invention further provides an adaptive outer loop power control system Mi BER measurements include those based on: BER measuring means for obtaining a BER measurements; outer loop power control means for adjusting the target SIR according to the measured BER value; a comparator for comparing the SIR target with the SIR measurement value, and generates power control commands, the system being characterized in that: said BER measurement means positioned distal the channel decoder.

在上述方法和系统中,使用信道解码器前端的传输信道BER (TrCHBER)来调整SIR目标值,可显著减小測量时间,可以快速收敛并跟踪信道变化,克服了以往基于误块率BLER的算法在高质量业务下收敛过慢、不易于实现的缺陷,从而快速自适应调整目标SIR 以达到既不太差,也不太好"的BER性能. In the method and system, a channel decoder front end of the transmission channel BER (TrCHBER) to adjust the SIR target, may be significantly reduced measurement time, fast convergence and track the channel variations, to overcome the algorithm conventional rate BLER based on the block error in the high quality service convergence is too slow, the defect is not easily implemented so fast adaptive adjustments to achieve the target SIR is neither bad nor good "BER performance.

另外, 该方法进一步根据公式 Additionally, the method further according to the formula

<formula>formula see original document page 9</formula>调整目标SIR值,其中 <Formula> formula see original document page 9 </ formula> SIR target adjustment value, wherein

"用于在不同衰落环境中调整该方法的收敛速度,其取值根据信道环境和衰落深度大小而不同,SIR^+i是第i个用户n+1次的SIR目标值,Bi是该用户的BER目标值,SIR一ta是该用户业务所需的最小SIR 值。在一般的信道衰落环境下,"的取值可为l。 "For adjusting the convergence rate of the different fading environment of the process, its value according to the depth of fading channel environments and different sizes, SIR ^ + i is the i th user n + 1 times SIR target, Bi is the user the target BER, the minimum SIR is a SIR value ta required by the service user. in general fading channel environment, "the value may be l.

基于此公式,该方法和系统的另一个优点是不需要知道BER与SIR之间的具体关系,克服了现有的基于分析BER和SIR之间的非线性关系的外环功率控制算法的复杂性. Based on this formula, a further advantage of the method and the system may not know the specific relationship between the BER and SIR, overcomes the complexity of the conventional outer loop power control algorithm based on the analysis of the nonlinear relationship between the BER and SIR .

因此,本发明的方法和系统可以有效地实现外环功率控制算法的目标:以最少的发射功率来获得所需的BER和BLER. Thus, the method and system of the invention can effectively achieve the target outer loop power control algorithm: the minimum transmit power to achieve the desired BER and BLER.

附图说明 BRIEF DESCRIPTION

通过结合附困阅读本发明的详细说明,有关本发明的上迷优点以及其他优点将变得更加清楚、明确。 Conjunction with the accompanying trapped by reading the detailed description of the invention, the above-related advantages and other advantages of the present invention will become more apparent, clear. 在附困中:图l是现有技术中用于实现反向闭环功率控制过程的框困; 图2是根振本发明的用于实现反向闭环功率控制过程的框闺; 闺3是根据本发明的用于实现反向闭环功率控制过程的流程困; 图4是比较BER測量值与BER目标值之间关系的流程图; 图5是比较SIR测量值与SIR目标值之间关系的流程困; 图6是在有信道编码和无信道编码情况下的编码增益比较; 图7表示根据本发明的外环功率控制算法对SIR目标值进行调整的结果; Trapped in the accompanying in which: Figure l is a prior art for implementing the reverse closed loop power control process block trapped; FIG. 2 is the root of the present invention for achieving the vibration reverse closed loop power control process block Gui; Gui 3 is the present invention for achieving the reverse closed loop power control process flow of the storm; FIG. 4 is a flowchart showing the relationship between the BER and BER measurement target; FIG. 5 is a comparative relationship between the measured SIR and the SIR target value of the flow sleepy; FIG. 6 is a coding gain in comparison with a channel coding and no channel coding conditions; FIG. 7 shows the outer loop power control algorithm in accordance with the present invention to adjust the SIR target value of the result;

图8表示根据本发明的外环功率控制算法中的BER測量结果。 8 shows BER measurement result of the control algorithm according to the present invention, the outer loop power. 具体实施方式 Detailed ways

下面将结合附困详细说明本发明的优选实施例.在各附困中,相似的单元使用相似的编号. The following detailed description of embodiments in conjunction with attached trapped preferred embodiment of the present invention. In each attachment difficulties, the use of similar elements are similarly numbered.

第一优逸实施例 Yi first preferred embodiment

闺2是根据本发明的用于实现反向闭环功率控制过程的框困,在图2中,在解码器20S前端放置BER測量器201,即在解码器的输入端测量传输信道BER(TrCH BER).这里的B£R测量器201可以-是现有技术中的任何BER測量装置.尽管困中示出BER测量器位于解码器与解交织器之间,但本领域技术人员可以理解,BER測量单元可以位于解码器之前、能实现BER測量的其他位置,例如,当该BER 测量器通过利用解码和编码器来重新生成已编码数据流来与接收到的受干扰编码数据流进行比较来获得BER測量值时。 2 is implemented Gui reverse closed loop power control process block according to the invention is trapped, in FIG. 2, the measured BER is placed in the distal end 20S decoder 201, i.e., measuring the transmission channel BER (BER at the input of the TrCH decoder ) B where R & lt £ 201 may measure - any BER measuring apparatus in the prior art although trapped BER measurements are shown located between the decoder and deinterleaver, those skilled in the art will appreciate, BER. before measuring unit may be located in the decoder, enables other locations BER measurements, for example, when to compare the received interference encoded data stream by the BER measurement unit by re-generating the encoded data stream using a decoder and the encoder to obtain BER measurement values.

传输信道BER是对一个无线连接中专用物理数据信道(DPDCH ) 进行平均BER測量所得到的结果,它是指在使用编码的情况下在解码器之前测量的BER参数.其測量周期一般为一个传输时间间隔(TTI). TTI可以是10、 20、 40或80ms.不同的传榆信道可能使用不同的TTI. Transport channel BER is a dedicated physical data channel (DPDCH) on a wireless connection results of the average BER measurements obtained, it means a BER parameter in the case where coding measured before the decoder. The measurement cycle is generally a transmission time interval (TTI). TTI may be 10, 20, 40, or 80ms. elm different transmission channels may use different TTI.

在信道解码器的输入端测量BER的原因在于,相对于通常在信道解码器榆出端进行测量的BER,它们之间相差一个编解码增益.对于 Cause measured BER at the input of the channel decoder that, with respect to the BER is typically measured in the channel decoder side Yu, a codec gain difference between them. For

固定的解码器,如巻积码和Turbo码,其编解码增益是相对闺定的, 而且比较容易通过仿真測量出来,在衰落信道下,信道编码可戍簋著提高接收性能.如闺6所示,在瑞利衰落的信道下,在相同BER(如10-2)性能时,采用1/2速率巻积码的接收机比没有信道编码的接收机获得8dB的编解码增益.西此,也同样利用解码器输入和输出端编解码增益的差异来解决来高质量业务BER测量的问题。 Fixed decoder as convolving codes and Turbo codes, which codec gain is relatively Gui given, and relatively easy to come out through simulation measured in fading channel, the channel encoding Shu Gui improve reception performance. As Gui 6 shown in Rayleigh fading channel, at the same BER (such as 10-2) the performance, using a rate 1/2 code convolving the receiver obtains a gain of 8dB codec receiver without channel coding than in the West this, also using the input and output of the decoder codec difference in gain high quality service to solve the problem to measure the BER.

当需要測量解码器输出端例如BER-1(^的高质量业务时,可能在解码器输入端只需要測量相对应的BER-l(T2。这样,对于一个传输速率为32kbit/s,数据帧为80ms(包括交织深度)的业务, 一个80ms TTI测量时间间隔就可以获得測量误差为±4%的传输信道BER測量值,于是解决了通常外环功率控制算法高质量业务BLER/BER測量时间长的问題.本领域技术人员应当理解,这里给出的数值只是示,性的,它们会根据编码器以及信道的情况而发生变化,另外,需类-揭出的是,测量时间间隔根据不同业务的传输数码率要求和BER测量值及测量要求的准确度来决定. 一般来说,传输数码率越大,測量时间可以越短,而需测量BER值越低或測量精度要求越高,則测量时间间隔越长. When the need to measure the output of the decoder e.g. BER-1 (^ quality services may only need to be measured corresponding to the BER-l (T2. In this way the decoder input, for a transmission rate of 32kbit / s, the data frame is 80ms (including interleave depth) service, a 80ms TTI measurement time interval can be obtained measurement error of ± 4% of the transport channel BER measurements, thus solving the outer loop power control algorithm is usually high traffic BLER / BER measurements for a long time . problem in the art of the art will appreciate, values ​​given here are merely illustrated, exemplary, and they vary according to the situation and a channel encoder, in addition, required class - revealing that the measurement time interval depending on traffic the digital transmission rate requirement and BER measurements and the required accuracy of the measurement is determined. in general, the greater the rate of the digital transmission, the measuring time can be shortened, and the need to measure the BER value or the lower the higher the required measurement accuracy, the measurement the longer the time interval.

从BER測量单元210得到的BER測量结果保存在FP ( fr^me protocol)帧的质量估计(QE)域中.节点B通过Iub接口将上行FP 帧传送给位于无线网络控制器(RNC)中的外环功率控制(OLPC) 单元202,在此进行反向外环功率控制. BER measurements obtained from the BER measuring unit 210 stored in the FP mass (fr ^ me protocol) frame estimate (QE) domain. Node B over the Iub interface is located upstream FP frame to the radio network controller (RNC) in outer loop power control (the OLPC) unit 202, this reverse outer loop power control.

从OLPC单元202得到SIR目标值之后,会与从SIR測量器? After 202 OLPC unit obtained from the target SIR, the SIR measuring unit and will be? 04 所得到的SIR測量值在比较器203中进行比较,由此产生功率控制命令TPC,向下传输给UE进行功率控制. SIR measurement value 04 obtained is compared in the comparator 203, thereby generating the TPC power control command, the downward transmission power control to the UE.

以下参照图3来说明本发明的工作流程.首先,在步樣310中桐得解码器前端的BER传送给OLPC单元202.接下来,在步壤320中, OLPC单元根据BER測量值与所需的BER目标值之间的关系来调整SIR目标值。 3 to illustrate the operation of the present invention with reference to FIG. First, the step to obtain samples Tong BER transport decoder 310 to the front end of the OLPC unit 202. Subsequently, in step 320. soil, OLPC unit in accordance with the desired BER value measured in the relationship between BER target value to adjust the SIR target. 在经过外环功率控制单元后,如果SIR目标值有变化, 則OLPC单元202通过Iub FP控制幀"上行外环功率控制"信令将 After outer loop power control means, if there is a change target SIR, the OLPC unit 202 via Iub FP control frame "uplink outer loop power control" signaling

新的SIR目标值告知节点B,在步槺330中,在节点B获得SIR目标值后,将其与SIR測量器204測得的SIR測量值相比较,由此产生TPC,控制UE的发射功率. The new SIR target to inform a Node B, in step 330 Kang, after obtaining the SIR target Node B, the measurement unit 204 with the SIR measured by the SIR measurement value is compared, thereby generating the TPC, controlling the transmit power of the UE .

以下参照闺4说明闺3中步緣320中的具体调整方式.在现有技术中,为了有效进行基于BER的功率控制,必须明确了解传输功率、 SIR和BER之间的关系.目前唯一知道的是BER与SIR之间不是线性关系,而是一种指数关系.相关内容可参见A.Sampath,PS Kumar 和Jack M. Holtzman的t)n Setting Reverse Link Target SIR in a CDMA System ",VTC97, 1997。很多基于分析BER与SIR之间非线性关系的外环功率控制算法都相当复杂,复杂的算法会使得RNC处理时间过长,从而降低功率控制的准确性和实时性,而本发明恰好克服了这些缺陷,可以快速收敛并跟踪信道变化。 4 described below with reference to the specific adjustment Gui described step 3 in the Inner edge 320 in the prior art, in order to effectively perform power control based on the BER, must clearly understand the relationship between the transmission power, the SIR and BER. The only known is not a linear relationship between the BER and SIR, but an exponential relationship can be found in relevant content A.Sampath, PS Kumar, and Jack M. Holtzman's t) n Setting Reverse Link Target SIR in a CDMA System ", VTC97, 1997 many outer loop power based on the analysis of the nonlinear relationship between the BER and SIR control algorithms are very complex, such complex algorithms RNC long processing time, thus reducing real-time power control and accuracy, and the present invention is just to overcome the these defects can be quickly and then tracks the channel variations.

在图4的步骤321中,OLPC获得BER测量值,接下来在步壤322中通过比较BER測量值与BER目标值间的关系来调整SIR目标值。 In step 321 of FIG. 4, the OLPC BER measurement value is obtained, then the SIR target is adjusted by comparing the relationship between BER and target BER measurements soil in step 322. 假设在第n次測量的第i个用户的BER以BERi(n)表示,其貝标BER用Bj表示,于是可以根据下述公式得到第n + 1次SIR目插值: Beri assumed that (n) indicates the n-th measured BER i-th user, which is represented by Tony standard BER Bj, then it is n + 1 times to obtain a first interpolation mesh SIR according to the formula:

<formula>formula see original document page 12</formula> <Formula> formula see original document page 12 </ formula>

其中SIRMnta是第i个用户当前业务所需最低SIR.公式中的最低SIR是为了保证算法不收敛为零."用于在不同的衰落环境中调整该算法的收敛速度,当《越大,调整步长越小,收敘越慢,但SIR目标值的震荡幅度较小;而a越小,调整步长越大,收敛越快,但SIR目标值的振荡幅度较大,导致短时间内干扰较大.a的典型取值范闺在1 到3之间.在城区环境下,经常会有深度衰落的情况,"例如可馭1 或者2,而在城郊和乡村,衰落变化幅度较低的情况下,《例如可取3.根据上述公式得到,SIR目标值的调整步长为 Wherein SIRMnta i th user is currently required to service the lowest SIR. The minimum SIR formula is to ensure that the algorithm does not converge to zero. "Used to adjust the convergence speed of the algorithm different fading environment, when the" larger adjustment the smaller the step size, the slower the received classification, but lesser volatility SIR target value; and a smaller step size larger, the faster convergence, but the SIR target value is large oscillation amplitude, leading to short interference a typical range of values ​​larger .a Gui between 1-3. in the urban environment, often deep fading situation, "Yu example 1 or 2, in rural and suburban, low fading variation width case, "for example, preferably 3 to obtain the above equation, the SIR target is adjusted in steps of

在一般情况下,cr取值可为1,此时,该公式简化为 In general, cr may be a value, at this time, the equation reduces to

<formula>formula see original document page 13</formula>(2) <Formula> formula see original document page 13 </ formula> (2)

在数字通信中,在加性离斯白噪声信道(AWGN)高信噪比情况下: 通常会使用公式BER-e邻(-Sm)/2来表示SIR与BER之间的关系, 以此带入公式(2),其被进一步简化为 In digital communication, in an additive white Gaussian noise from the channel (AWGN) high SNR cases: generally using the formula BER-e o (-Sm) / 2 to represent the relationship between the BER and SIR, this band into equation (2), which is further simplified to

(3) (3)

由此,可根据BER目标值与实际BER測量值之间的关系来调整SIR目标值.具体的调整情况如下(见困4中的步壤3221 - 3223): 1)如果BERi(n) - B,, SIR,(n)-ln(1/2 B,), SIR,射产SIR,,n SIR目标值保持不变; Thereby, the SIR target may be adjusted based on the relationship between the target and actual BER BER measurements specific adjustments as follows (see Step 4 in soil trapped 3221--3223): 1) If BERi (n) - B ,, SIR, (n) -ln (1/2 B,), SIR, production shot target SIR ,, n SIR remains unchanged;

2 )如果<formula>formula see original document page 13</formula> 2) If <formula> formula see original document page 13 </ formula>

SIR目标值下调一定步长; 3 )如果<formula>formula see original document page 13</formula>SIR目标值上调一定步长, Downregulate target SIR step size; 3) If <formula> formula see original document page 13 </ formula> SIR target increase certain step length,

本算法的一个好处是可以根据信道的实际情况来自适应调整SIR 步长.当BER目标值与实际BER測量值之间的差距很大时,SIR步 One benefit of this algorithm is to adjust the SIR step size adaptively according to the actual channel. When a large gap between the target and actual BER BER measurement value, SIR step

long

<formula>formula see original document page 14</formula>OT〈。 <Formula> formula see original document page 14 </ formula> OT <. 会自动加大;当BER目标值与实际BER桐量值 Will automatically increase; BER when the BER target and actual values ​​Tong

之间的差距变小时,SIR步长 The gap between becomes small, SIR step

<formula>formula see original document page 14</formula>会自动减小直到算法 <Formula> formula see original document page 14 </ formula> algorithm automatically decreases until

收敛,收敛时BER目标值与实际BER測量值之间非常接近,SIR目 Convergence, the convergence is very close to the time between the target and actual BER BER measurement value, the SIR mesh

标值保持不变. Standard values ​​remain unchanged.

由上述描述可以看出,此算法不需要知道BER与SIR之间的具体关系,实现起来比较简单.克服了基于分析BER与SIR之间非线性关系的外环功率控制算法的复杂性. As can be seen from the above description, this algorithm does not need to know the specific relationship between the BER and SIR, simple to implement. Overcomes the complexity outer loop power nonlinear relationship between BER and SIR control algorithm analysis.

以下参照困5描述在闺3中步稞330中的具体操作.在经过外环功率控制算法后,如果SIR目标值有变化,則OLPC单元202通过Iub FP控制帧"上行外环功率控制"信令来告知节点B.然后,在比较器203中将目标SIR值与从SIR測量器204得到的SIR测量值进行比较。 5 describes specific operations trapped in the Inner in step 3 in the following with reference to 330 wheat. After outer loop power control algorithm, if SIR target changes, the OLPC unit 202 via Iub FP control frame "uplink outer loop power control" Letter order to inform the node B. then, at 203 the target SIR is compared in the comparator and the value of SIR measurement value obtained from the SIR measuring unit 204. 如果SIR测量值》SIR目标值时,TPC--l,需要控制UE降低发射功率,若SIR测量值〈SIR目标值时,TPO+1,需要控制UE提高发射功率,从而完成了本发明的外环功率控制方法. If the SIR measurement value "SIR target value, TPC - l, necessary to control the UE to reduce the transmission power, if the SIR measurement value <SIR target value when, TPO + 1, UE needs to improve the transmission power control, thereby completing the present invention the outer loop power control method.

下面参照困7和困8说明本发明方法的仿真结果.困7是根据本发明的外环功率控制方法对SIR目标值进行调整的结果,困8是根据本发明的外环功率控制方法中的BER測量结果.在图7中,初始SIR 目标值为7dB,初始目标BER測量值为5*1(TS, BER目标值为106, 即当前业务为要求高质量的数据业务;在測量时间点n- (10、 20、 30、 40)时,由于衰落环境突然发生变化,信道BER測量值突然改变: BERn = BEIW(IO"、 l(T2、 10、 102);参数SIR偏差代表SIR目标值( 一个对数正态分布的随机变量)的标准方差,值为ldB,图中的时间间隔测量单位为一个TTI. Referring trapped 7 and 8 illustrate simulation results trapped method of the present invention. 7 is a result of the trapped SIR target value is adjusted according to the outer loop power control method of the present invention, 8 is trapped outer loop power control method of the present invention . BER measurement results are shown in FIG. 7, the initial value of 7dB target SIR, the initial target BER measurement value 5 * 1 (TS, BER target value 106, i.e., the current service quality data service is required; the measurement time point n - (10, 20, 30, 40) when, due to fading sudden environmental change, channel BER measurements abruptly changes: BERn = BEIW (IO ", l (T2, 10, 102); parameter SIR deviations are representative for the SIR target ( a standard deviation of the lognormal random variable) the value of ldB, FIG time interval is measured in a TTI.

从闺7可以看出,该外环功率控制方法根据BER目标值与BER 测量值之间的差別,快速将SIR目标值调整至7.9dB左右,而困8中的BER测量值则稳定在10'6附近,当BER測量值罔为信道衰落发生 As it can be seen from the Inner 7, the outer loop power control method based on the difference between the target value and the BER BER measurement value, the SIR target to adjust quickly to approximately 7.9dB, and the BER measured values ​​stabilize at 10 trapped 8 ' near 6, when the measured BER value of channel fading occurs indiscriminately

剧烈变化时,如在n-10时变小了一个数量级,根据本发明的功率控制方法可以快速地将SIR目标值调低,从而降低UE发射功率,^«低对其他用户的干扰.当信道袭落恢复到原来状态时,该方法法可以迅速跟踪,并将SIR目标值调高至原来的稳定SIR值7.9dB.同样,当BER测量值在n = 30时,則变大一个数量级,该方法根据BER测量值和BER目标值的差别大小,调高目标SIR数值,使得UE加大发射功率,从而使得BER測量值迅速与BER目标值缩小差距,减小队该高质量数据业务的影响.此处需要指出,闺8中的BER測量值是由QE中的传输信道BER"结合信道编码增益计算所得.这解释了在时间点IO、 20、 31和41时,BER测量值会低至107和10"*数量级. To a sudden change, such as when n-10 reduced an order of magnitude, may SIR target quickly down power control method according to the present invention, to reduce the UE transmit power, ^ «low interference to other users. When the channel when returned to the original state off the passage, which method can quickly track, and the SIR target SIR increase to the original stable value 7.9dB. Similarly, when the measured BER value at time = n 30, it becomes an order of magnitude, the the method of size difference measurement value BER and target BER, an increase in the target SIR value, so that the UE increase the transmission power so that BER BER measurements and a target value quickly reduce the gap to reduce impact force of the high-quality data service. here is to be noted, BER measured values ​​Gui 8 is a channel coding gain calculated by the QE in a transport channel BER "binding. this explains at the time point IO, 20, 31 and 41, BER measurements as low as 107 and 10 "* orders of magnitude.

根据以上说明可以看出,本发明提供了在高质量通信中进行外环功率控制的方法和系统,它可以在高质量业务的前提下,降低外环功率控制的测量时间.它利用质量估计(QE)域中BER测量信息*即传榆信道BER来调整SIR目标值,易于实现,可以快速收敛并跟踪信道变化,可以快速自适应调整SIR目标值以达到筑不太差,也不太好"的BER性能.而且,它也不需要知道BER与SIR之间的具体关系,克服了现有的基于分析BER与SIR之间的非线性关系的外环功率控制算法的复杂性. As can be seen from the above description, the present invention provides a method and system for outer loop power control in a high-quality communications, it may, subject to service quality, reduce the measurement time of the outer loop power control. It is estimated by the mass ( the QE) * i.e. BER measurement information transfer domain channel BER elm SIR target to adjust, easy to implement, fast convergence can track the channel variation and can quickly adjust the SIR target to achieve the adaptive build not bad, not good. " BER performance. Moreover, it does not need to know the specific relationship between the BER and SIR, to overcome the existing complexity outer loop power analysis based on the nonlinear relationship between the BER and SIR control algorithms.

第二优选实施例 Second preferred embodiment

在第一实施例中描述了RNC与节点B分离的情况,节点B需要经过Iub接口将BER測量值传送给RNC,若SIR目标值有任何更化, RNC也需要经Iub接口通过相应的信令来通知节点B. In the first embodiment described the case where the RNC and the Node B separated, the Node B needs to be transferred via the Iub interface BER measurements to RNC, if there is any more of SIR target, RNC via an Iub interface also requires signaling through respective to inform the node B.

但是,对于采用集中控制方式的系统,即RNC和节点B凌餘集中在节点B中的系统而言,則无需通过Iub接口在节点B和RNC之间传输各种参数,这时只有节点B本身即可实现外环功率控制.其实 However, for systems using centralized control, i.e., RNC and Node B I Ling concentrated in a node B for the system, the various parameters without the transmission between nodes B and the RNC via an Iub interface, then only the Node B itself outer loop power control can be realized. In fact,

现的方式类似于在第一实施例中的实现方式,此处不再详述, 第三优选实施例 Now in a manner similar to the first implementation embodiment, not described in detail herein, embodiments of the third preferred

本发明的第一和第二实施例讲述了节点B中的上行外环功率控制算法,该方法也可以类似地适用于移动台中的下行外环功率控制算. 此时,RNC和节点B的功能被集中在移动台中,其实施方式与第一实施例的实施方式类似,其相同之处将不再详迷,以下仅对其不同之处加以说明。 The first and second embodiments of the present invention describes an uplink outer loop power control algorithm in the Node B, the method may be similarly applicable to a mobile station downlink outer loop power control algorithm. In this case, the RNC and the Node B functionality is concentrated in a mobile station, which is similar to the embodiment of the embodiment of the first embodiment, the similarities will not be lost in detail, the following will be described only for its differences.

在移动台业务中,BER目标值是由RNC设定后通知移动台的. 移动台根据前述方法测量BER值并根据所述算法调整SIR目标值。 In the mobile station in service, the target BER is notified by the mobile station after setting the RNC. The mobile station measures the BER value and the method according to the algorithm adjusts the SIR target. 移动台同时测量接收信号的SIR,与SIR目标值比较后得到下行快速内环功率控制指令,然后发送给节点B进行下行功率控制, The mobile station measures the SIR of the received signal at the same time, to give the fast inner loop downlink power control instruction is compared with the target SIR, and transmits to the Node B for downlink power control,

第四优选实施例 Fourth preferred embodiment

在用户业务对质量要求不是很高时,本发明也可按照下述方式实施.此时,可以仍然采用困1中所示的系统结构,即在解码器后雄測量BLER/BER,只是其中的外环功率控制单元102由本发明的外环功率控制(OLPC)单元202所代替,在这种情况下,如果測量的参栽是BER,可直接依据公式(l)实现依据本发明的外环功率控制方法.如果测量的参数是BLER,則需要一个換算装置,用于通过某种方式将BLER值换算为BER值,然后再执行后续操作,后续操作与在第一实施例中描述的方式相同,此处不再详述. When the user is not very high quality of service requirements, the present invention may be practiced in the following manner. In this case, the system can still use the configuration shown in trapped 1, i.e. male measured BLER / BER in the decoder, which is only outer loop power control unit 202 instead of section 102 outer loop power control (the OLPC) according to the present invention consists of, in this case, if the BER is measured plant parameters, the present invention may be implemented in accordance with outer loop power directly in accordance with equation (l) the control method if the BLER is measured parameters, it is necessary in terms of a means for BLER value by some means in terms of BER value, before the next operation, and the subsequent operation in the first embodiment described in the same embodiment, not mentioned here.

以上根据优选实施例对本发明进行了详细说明.尽管优选实施例是根据BER測量值与BER目标值之间的对数关系加以描迷的,但本领域技术人员可以理解,也可以使用BER測量值与BER目标值的其他关系来实现本发明,例如,利用它们之间的指数关系或利用递归方式。 The present invention has been described in detail according to the preferred embodiment of the above embodiments. While the preferred embodiment is described to be a logarithmic relationship between the fan according to the measured value of BER BER target, it will be appreciated that those skilled in the art, may be used BER measurements other relationships target BER is achieved with the present invention, for example, using an exponential relationship between them or recursive manner.

尽管本发明的优选实施例是基于公式(l)-(3)来描迷外环功率控制的实现的,但本领域技术人员可以理解,该控制也可以通过其他方弍来实现,例如,通过程序、查表或通过软件、硬件相结合而得以实现. Although the preferred embodiment of the present invention is based on the equation (l) - (3) to trace a fan outer loop power control implementation, those skilled in the art will appreciate, the control may also be achieved by other parties Er, e.g., by program, look-up table or by software, hardware, and the combination is achieved.

在本发明中,用户设备UE可以是具备无线接入功能的任何用户 In the present invention, the user equipment UE may be any user with wireless access function

设备,包括但不限于移动电话、便携式计算机、个人数字助理等。 Devices, including but not limited to mobile telephones, portable computers, personal digital assistants and the like. Exhausted

管在本发明的优选实施例中说明本发明适用于DS/CDMA系统,但本发明也适用于所有需要外环功率控制的系统,这些系统包括但不限于IS95系统、WCDMA系统、TD-SCDMA和cdma2000系统等. DESCRIPTION The present invention is applicable to pipes DS / CDMA system according to the present invention, in a preferred embodiment, the present invention is also applicable to all systems require the outer loop power control, including but not limited to these systems IS95 system, WCDMA system, TD-SCDMA and cdma2000 systems.

尽管上述根据优选实施例对本发明进行了阐述,但这些描述只是为了说明的目的,不应理解为对本发明的任何限制。 Although the above preferred embodiment according to the present embodiment of the invention has been described, but such description is for illustrative purposes only and should not be construed as any limitation to the present invention. 本领域技术人员可以想到对本发明进行各种修改和改进,但这些修改和改进都赵括在随附权利要求书中所限定的本发明的范闺和精神内。 It may occur to persons skilled in the art that various modifications of the present invention and modifications, but these modifications and improvements are within the scope Kuo Gui of the invention as defined by the appended claims and spirit.

Claims (18)

1. 一种基于传输信道BER测量的自适应外环功率控制方法,包括如下步骤:a. 测量传输信道BER来获得传输信道BER测量值;b. 基于测量的传输信道BER值来调整SIR目标值;c. 将SIR目标值与SIR测量值相比较,并生成功率控制命令,该方法的特征在于:所述测量传输信道BER的步骤包括测量在解码器前端的传输信道BER的步骤。 1. An adaptive outer loop transmission power control method based on the measured channel BER, comprising the steps of: a transport channel BER measurements to obtain the transmission channel BER measurements; B value based on the transmission channel BER measurements to adjust the SIR target. .; C compared to the target SIR SIR measurement value, and generates power control commands, the method being characterized in that: said step of measuring the transmission channel comprises the step of measuring the BER at the front end of the decoder transport channel BER.
2. 根据权利要求l所述的方法,其特征在于所述步骤b基于式调整目标SIR :<formula>formula see original document page 2</formula>.,其中,"用于在不同衰落2膽,(")环境中调整该方法的收敛速度,其取值根据信道环境和衰落深度大小而不同,SIRi,n+1是第i个用户n+l次的SIR目标值,Bi是该用户的传输信道BER目标值,SIR一in是该用户业务所需的最小SIR值,服i?,(")是第i个用户的第n次传输信道BER值。 2. The method according to claim l, wherein said target adjustment formula based on step b SIR:. <Formula> formula see original document page 2 </ formula>, where "fading for 2 different bladder, ( ") environment adjust the convergence speed of the process, its value depends on the depth of fading channel environments and different sizes, SIRi, n + 1 is the i th user n + l times SIR target, Bi is the transmission of the user channel BER target, the minimum SIR is a SIR value in the user desired service, service i?, ( ") is the i th n-th transmission channel BER value of the user.
3.根据权利要求2所述的方法,其特征在于,SIR目标值调整的步长为<formula>formula see original document page 2</formula> 3. The method according to claim 2, characterized in that, the SIR target adjustment is in steps of <formula> formula see original document page 2 </ formula>
4.据权利要求2所述的方法,其特征在于在al时,上述公式简化<formula>formula see original document page 2</formula>此时步骤b以如下方式调整目标SIR:)如果<formula>formula see original document page 2</formula>, SIR目标值保持不变;2 )如果BERi(n)〈Bi, SIRi(n^ln(l/2Bi), SIRi,n+产^^SIR^, SIR目标值下调;以及3)如果BERi(n)〉Bj, SIRi(n)〈ln(l/2Bi), SIRi,n+产即,SIRin,57/?,. (w) ,SIR目标值上调;其中,SIRi(n)是第i个用户的第n次的SIR值。 4. The method according to claim 2, characterized in that when Al, the above equation simplifies to <formula> formula see original document page 2 </ formula> At this step b in the following manner to adjust the target SIR if :) <formula> formula see original document page 2 </ formula>, SIR target unchanged; 2) if BERi (n) <Bi, SIRi (n ^ ln (l / 2Bi), SIRi, n + yield ^^ SIR ^, SIR target value down;?., and 3) if BERi (n)> Bj, SIRi (n) <ln (l / 2Bi), SIRi, n + yield i.e., SIRin, 57 /, (w), SIR target increase; wherein, SIRi is (n) is the i th value of the n-th user's SIR.
5. 根据权利要求l-4中任意一个所述的方法,其特征在于:所述步骤c基于以下方式进行比较:如果SIR测量值^SIR目标值时,则使功率控制命令-4,需要控制UE降低发射功率;若SIR测量值〈SIR目标值时,则使功率控制命令1?0=+1,需要控制UE提高发射功率。 5. The method of l-4 in any one of the preceding claims, characterized in that: said step c in the following manner based on the comparison: if the SIR measurement value ^ SIR target value, so that the power control commands -4, needs to be controlled UE reduce transmit power; if the SIR measurement value <SIR target value, so that the power control command 1 + 0 = 1, it is necessary to improve the transmission power control UE?.
6. 根据权利要求2所述的方法,其特征在于:要求SIR目标值大于一个该业务的最小SIR值SlRi,min。 6. The method according to claim 2, wherein: a is greater than the required SIR target of the service is the minimum SIR value SlRi, min.
7. 根据权利要求l所述的方法,其特征在于:步骤b在无线网络控制器RNC中完成。 7. A method as claimed in claim l, wherein: in step b is completed in the radio network controller RNC.
8. 根据权利要求7所述的方法,其特征在于:在信道解码器前端得到的传输信道BER测量值由节点B经Iub接口通过上行FP帧的质量估计域传送给RNC。 8. The method according to claim 7, wherein: the Transport channel BER measurement channel decoder distal obtained by the Node B over the Iub interface to the RNC by transmitting an uplink FP frame quality estimation domain.
9. 根据权利要求8所述的方法,其特征在于:若RNC中得到的S扱目标值发生变化时,RNC通过Iub接口通过FP控制帧"上行外环功率控制"信令来通知节点B。 9. The method according to claim 8, characterized in that: if the RNC notifies the Node S Qi obtained target value is changed, by the RNC through the Iub interface FP control frame "uplink outer loop power control" signaling B.
10. —种基于传输信道BER测量的自适应外环功率控制系统,包括: 传输信道BER测量装置,用于获得传输信道BER测量值, 外环功率控制装置,用于根据传输信道BER调整SIR目标值;以及比较器,用于将SIR目标值与SIR测量值相比较,并产生功率控制命令,该系统的特征在于:所述传输信道BER测量装置位于信道解码器前。 10. - Species adaptive outer loop power control system based on the Transport channel BER measurement, comprising: a transmission channel BER measuring means for obtaining transmission channel BER measurements, outer loop power control means for adjusting BER target SIR according to transmission channel value; and a comparator for comparing the SIR target with the SIR measurement value, and generates power control commands, the system being characterized in that: the transport channel BER measuring device is located before the channel decoder.
11. 根据权利要求io所述的系统,其特征在于所述外环功率控制装置被配置为基于以下公式调整目标SIR<formula>formula see original document page 4</formula>其中a用于在不同衰落环境中调整该系统的收敛速度,其取值根据信道环境和衰落深度大小而不同,SIRi,n+1是第i个用户n+1次的SIR目标值,Bi是该用户的BER目标值,SIR^in是该用户业务所需的最小SIR 值,朋;?,(w)是第i个用户的第n次传输信道BER值。 11. The system according to claim io, wherein said outer loop power control means is configured to adjust a target SIR based on the formula <formula> formula see original document page 4 </ formula> wherein for a different fading environment adjust the convergence speed of the system, its value according to the depth of fading channel environments and different sizes, SIRi is, n + 1 is the i th user n + 1 times SIR target, Bi BER target is the user, SIR ^ in a minimum SIR value required for the service user, Peng;?, (W) is the n-th transmission channel BER value of the i th user.
12.根据权利要求ll所述的系统,其特征在于,所述外环功率控制装置调整SIR目标值的步长为<formula>formula see original document page 4</formula> 12. The system as claimed in claim ll, wherein the means for adjusting the SIR target step size of the outer loop power control of <formula> formula see original document page 4 </ formula>
13.根据权利要求11所述的系统,其特征在于在<formula>formula see original document page 4</formula>时,上述/>式h此时所述外环功率控制装置简化为<formula>formula see original document page 4</formula>被配置为以如下方式调整目标SIR:1)如果<formula>formula see original document page 4</formula> , SIR目标值保持不变;2 )如果<formula>formula see original document page 4</formula>目标值下调;以及3)如果<formula>formula see original document page 4</formula>目标值上调;其中,SIRi(n)是笫i个用户的第n次的SIR值。 13. The system according to claim 11, characterized in that <formula> formula see original document page 4 </ formula>, above /> In this case the formula h outer loop power control means is simplified <formula> formula see original document page 4 </ formula> configured to adjust the target following manner SIR: 1) If <formula> formula see original document page 4 </ formula>, SIR target unchanged; 2) If <formula> formula see original document page 4 </ formula> target down; and 3) If <formula> formula see original document page 4 </ formula> up target; wherein, SIRi (n) is the n th user's Zi i SIR value.
14.根据权利要求10-13中任意一个所述的系统,其特征在于:所述比较器被配置为基于以下方式进行比较:如果SIR测量值2SIR目标值时, 则使功率控制命如-1,需要控制UE降低发射功率;若SIR测量值^1R 目标值时,则使功率控制命令1?〔=+1,需要控制UE提高发射功率。 10-13 14. The system of any one of claims, wherein: the comparator is configured to compare based on the following ways: if the measured value 2SIR SIR target value, so that the power control commands such as -1 , reducing transmit power necessary to control UE; if the measured value ^ 1R SIR target value, so that the power control command = [1 + 1, UE increase the transmission power necessary to control?.
15. 根据权利要求ll所述的系统,其特征在于:所述系统要求SIR目标值大于一个该业务的最小SIR值SIRi,min。 15. The system according to claim ll, characterized in that: the system requires a SIR target of the service is greater than the minimum SIR value SIRi, min.
16. 根据权利要求10所述的系统,其特征在于:外环功率控制装置位于无线网络控制器RNC中。 16. The system according to claim 10, wherein: the outer loop power control device is located in the radio network controller RNC.
17,根据权利要求16所述的系统,其特征在于:传输信道BER测量器将传输信道BER测量值经Iub接口通过上行FP帧的质量估计域传送给RNC。 17. The system of claim 16, wherein: Transport channel BER measurer transmission channel BER measurements to the RNC via the Iub interface by transmitting an uplink FP frame quality estimation domain.
18.根据权利要求17所述的系统,其特征在于:若RNC中得到的SIR目标值发生变化时,RNC通过Iub接口通过FP控制帧"上行外环功率控制"信令来通知节点B。 18. The system according to claim 17, characterized in that: if the RNC notifies the Node obtained SIR target changes, RNC via an Iub interface by FP control frame "uplink outer loop power control" signaling B.
CN 02143501 2002-09-26 2002-09-26 Method and system for outer ring power control based on selfadaptive error rate measuring CN100469182C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02143501 CN100469182C (en) 2002-09-26 2002-09-26 Method and system for outer ring power control based on selfadaptive error rate measuring

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN 02143501 CN100469182C (en) 2002-09-26 2002-09-26 Method and system for outer ring power control based on selfadaptive error rate measuring
AU2002349456A AU2002349456A1 (en) 2002-09-26 2002-11-26 A method and system of adaptive outerloop-power-control based on the measurement of ber
PCT/CN2002/000849 WO2004034605A1 (en) 2002-09-26 2002-11-26 A method and system of adaptive outerloop-power-control based on the measurement of ber

Publications (2)

Publication Number Publication Date
CN1486100A CN1486100A (en) 2004-03-31
CN100469182C true CN100469182C (en) 2009-03-11

Family

ID=32076003

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02143501 CN100469182C (en) 2002-09-26 2002-09-26 Method and system for outer ring power control based on selfadaptive error rate measuring

Country Status (3)

Country Link
CN (1) CN100469182C (en)
AU (1) AU2002349456A1 (en)
WO (1) WO2004034605A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101754345B (en) 2009-12-29 2012-07-04 华为技术有限公司 Control method of transmitting power and communication equipment

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006015516A1 (en) * 2004-08-12 2006-02-16 Zte Corporation Method and device for optimizing sir value in transmission power control of cdma communication system
CN100429876C (en) 2005-02-24 2008-10-29 Ut斯达康通讯有限公司 External ring power control method and system in CDMA system
US7609791B2 (en) 2006-04-21 2009-10-27 Telefonaktiebolaget L M Ericsson (Publ) Iterative decoding with intentional SNR/SIR reduction
US8706153B2 (en) 2009-04-23 2014-04-22 Sanyo Electric Co., Ltd. Communication device and communication system
CN102291765B (en) 2010-06-21 2016-03-30 中兴通讯股份有限公司 A kind of outer-loop power controlling method and device
CN102316568B (en) * 2010-07-05 2015-08-12 中兴通讯股份有限公司 Closed loop power control processing method and base station
CN104488200B (en) * 2013-06-29 2018-10-30 华为技术有限公司 Poewr control method, device and system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19930747A1 (en) 1999-07-02 2001-01-18 Siemens Ag Transmitting power regulation for radio station in radio communications system
CN1294469A (en) 1999-10-26 2001-05-09 深圳市华为技术有限公司 S/N ratio threshold regulating method and device for controlling power of mobile communication
CN1351783A (en) 1999-06-23 2002-05-29 摩托罗拉有限公司 Apparatus and method for power control in a radio communication system
CN1364356A (en) 2000-03-28 2002-08-14 松下电器产业株式会社 Transmission power control device and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997050197A1 (en) * 1996-06-27 1997-12-31 Ntt Mobile Communications Network Inc. Transmitted power controller
US6708041B1 (en) * 1997-12-15 2004-03-16 Telefonaktiebolaget Lm (Publ) Base station transmit power control in a CDMA cellular telephone system
CN1140147C (en) * 2000-07-01 2004-02-25 信息产业部电信传输研究所 Method and system of outer loop power control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1351783A (en) 1999-06-23 2002-05-29 摩托罗拉有限公司 Apparatus and method for power control in a radio communication system
DE19930747A1 (en) 1999-07-02 2001-01-18 Siemens Ag Transmitting power regulation for radio station in radio communications system
CN1294469A (en) 1999-10-26 2001-05-09 深圳市华为技术有限公司 S/N ratio threshold regulating method and device for controlling power of mobile communication
CN1364356A (en) 2000-03-28 2002-08-14 松下电器产业株式会社 Transmission power control device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101754345B (en) 2009-12-29 2012-07-04 华为技术有限公司 Control method of transmitting power and communication equipment

Also Published As

Publication number Publication date
CN1486100A (en) 2004-03-31
AU2002349456A1 (en) 2004-05-04
WO2004034605A1 (en) 2004-04-22

Similar Documents

Publication Publication Date Title
CN1250026C (en) Forward-link scheduling in wireless communication system durnig soft and softer handoff
CN100589338C (en) Fast adaptive power control for a variable multirate communications system
US6496706B1 (en) Method and system for transmit gating in a wireless communication system
JP5123278B2 (en) Method and system for improving reliability of quality feedback in a wireless communication system
EP1256190B1 (en) Method and apparatus for power control of multiple channels in a wireless communication system
KR100818136B1 (en) Method and apparatus for adaptive power control in a wireless voice and data communication system
CN1157880C (en) Multiple time interval power control method
US6373823B1 (en) Method and apparatus for controlling transmission power in a potentially transmission gated or capped communication system
JP4621205B2 (en) Apparatus and method for determining gain factors of wireless communication transmission power
CN1241334C (en) Method and device for controlling transmit power
US7376438B2 (en) Power control for a channel with multiple formats in a communication system
JP4142448B2 (en) Method and system for adjusting power control set points in a wireless communication system
CN1302627C (en) Method and apparatus for power control in wireless communication system
US7072321B2 (en) Forward-link scheduling in a wireless communication system
KR100691555B1 (en) Downlink power control with limit to dynamic range using detection of downlink transmit power
JP3950056B2 (en) Power control method and apparatus in communication system
CN1110156C (en) Method and device for performing distributed forward power control
CN100488094C (en) Improved outer-loop scheduling design for communication systems with channel quality feedback mechanisms
KR100403728B1 (en) Outer loop power control apparatus in mobile communication system and control method thereof
AU770453B2 (en) Method and apparatus for detecting zero rate frames in a communications system
RU2285338C2 (en) Method and device for communication line quality feedback in wireless communication system
US7809044B2 (en) Method and apparatus for forward link power control
CN100534234C (en) Method and system for adjusting downlink outer loop power to control target SIR
US7310499B2 (en) Method, apparatus and system for handling unreliable feedback information in a wireless network
CN1124697C (en) Method and apparatus for controlling signal power in a communication system

Legal Events

Date Code Title Description
C06 Publication
C10 Request of examination as to substance
C14 Granted
C17 Cessation of patent right