CN1379560A - Forward power control method for CDMA mobile communication system - Google Patents

Forward power control method for CDMA mobile communication system Download PDF

Info

Publication number
CN1379560A
CN1379560A CN01116411A CN01116411A CN1379560A CN 1379560 A CN1379560 A CN 1379560A CN 01116411 A CN01116411 A CN 01116411A CN 01116411 A CN01116411 A CN 01116411A CN 1379560 A CN1379560 A CN 1379560A
Authority
CN
China
Prior art keywords
frame
frames
power
counter
power control
Prior art date
Application number
CN01116411A
Other languages
Chinese (zh)
Other versions
CN1138375C (en
Inventor
孙波
吕玲
嵇家刚
吴勇
陈巍
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CNB011164115A priority Critical patent/CN1138375C/en
Publication of CN1379560A publication Critical patent/CN1379560A/en
Application granted granted Critical
Publication of CN1138375C publication Critical patent/CN1138375C/en

Links

Abstract

This invention relates to a forward power control method for CDMA mobile communication system based on continuous miss-frame measurement report, and includes the quality examination of the recovered forward frame by the mobile station who feeds back the frame quality measurement report to the base station via the backward link on finding out continuous damaged frames, and at the same time begins the next turn measurement after stopping to measure the followed M forward frames; the base station picks up the frame quality measurement report from the restored back-ward frames, and according to this, gets the gain value adjustment quantity of the power amplifier to multiply the aid power gain value adjustment quantity with the original amplified multiple to get the new amplifier multiple of the power amplifier to adjust the existing forward link emitting power.

Description

码分多址移动通信系统的前向功率控制方法 CDMA forward power control method for a mobile communication system

本发明涉及一种在移动通信系统中实现前向功率控制的方法,更确切地说是涉及一种在码分多址(CDMA)移动通信系统中基于连续误帧测量报告的前向功率控制的方法。 The present invention relates to the former implemented in a mobile communication system, the method for power control, and more particularly, to a continuous forward power control based on the measurement report erroneous frames in Code Division Multiple Access (CDMA) mobile communication system method. 可降低前向发射功率、减小前向干扰并提高系统的前向容量。 Before the former can reduce transmission power control to reduce interference and increase the capacity of the system.

图1中所示是一个CDMA移动通信系统的基本结构,包括至少一个基站110和一个移动台100,和包括由基站110到移动台100的码分多址前向链路和由移动台100到基站110的码分多址反向链路。 As shown in FIG. 1 is a basic configuration of a CDMA mobile communication system, comprising at least one base station 110 and one mobile station 100, and includes a front 100 by the CDMA base station 110 and a forward link to the mobile station 100 to the mobile CDMA base station 110 reverse link. 基站包括有增益放大器,用于对前向链路上将要发射的射频信号进行必要的功率增益,且其功率增益值可控。 The base station includes a gain amplifier for radio frequency signals on the forward link to be transmitted to the necessary power gain, and the gain value power control.

在CDMA系统中,满足用户对服务质量的要求和尽可能提高系统容量是十分重要的两个技术问题,且主要由功率控制保证,包括反向链路功率控制(可简称反向功控)和前向链路功率控制(可简称前向功控)。 In a CDMA system, the quality of service to meet user requirements and maximize system capacity are two important technical problems, mainly by the power control and assurance, a reverse link power control (may be referred to the reverse power control) and front (front direction may be referred to as reactive control) forward link power control.

反向链路功率控制是指移动台在基站辅助下,通过合理调整反向发射功率,使得各个移动台能以符合质量要求的最小发射功率发射,且各个移动台在经过传输链路损耗和各种衰落后到达归属小区基站时的功率值尽量相等,从而减小前向干扰、提高前向容量。 Reverse link power control at a mobile station refers to a base station assisted by properly adjusting the reverse transmission power, so that each mobile station can transmit at the minimum transmit power to meet the quality requirements, and each mobile station via a transmission link loss, and each species fading power value after reaching the home cell base station is equal as much as possible, thereby reducing interference to the front, to increase the capacity of the former.

前向链路功率控制是指基站在移动台(手机)辅助下,通过合理调整前向发射功率,使得移动台接收到的前向功率能在满足服务质量要求的前提下达到最小,从而减小前向干扰、提高前向容量。 Forward link power control is a base station at the mobile station (mobile phone) assisted by adjusting the transmission power of the former reasonable, so that the mobile station receives the forward power can be minimized while meeting quality of service requirements, thereby reducing forward interference, before improving to capacity. 随着第三代(3G)移动通信系统中前向业务的大幅度增加,前向链路功率控制已经成为3G中最重要的内容之一。 With the substantial increase in the business of third-generation (3G) mobile communications system before the former has become one of the most important 3G content to link power control.

前向功率控制的目标是合理调整前向发射功率以保证用户要求的业务质量要求,同时在满足该要求的前提下,还能有效地降低前向发射功率,以减小多基站、多信道对用户业务信道的软噪声干扰。 Forward power control target is a front rationally adjust the transmission power to guarantee quality of service requirements requested by the user, before the premise while meeting the requirements, but also to effectively reduce the transmission power, to reduce multi-station, multi-channel pair soft noise interfering user traffic channel. 在前向链路功率控制期间,对于一个在小区边缘的移动台,基站必须以一个较大的功率在该基站到该移动台的业务信道上进行信号传输,才能保证该移动台所要求的服务质量水平,否则即会产生所谓的“死角现象”。 During the forward link power control, a must for a larger power in the base station to the mobile station's traffic channel signal transmission in the cell edge mobile stations, base stations, in order to guarantee the quality of service required by the mobile station level, otherwise it will produce so-called "dead phenomenon." 另一方面,该基站到该移动台的信号功率又成为其它移动台接收信号的干扰信号,为了保证其它移动台的服务质量要求和保证一定的系统容量,基站又应该以尽量小的功率发射来实现到该移动台的信号传输。 On the other hand, the signal power of the base station to the mobile station and other mobile stations become interference signals received signal, in order to guarantee the quality of service requirements of the other mobile stations and to ensure a certain system capacity, a base station should be as small as possible and transmit the power to realize the signal transmission to the mobile station. 因此说有效的功率控制成为提高系统容量的关键技术。 So, to say the key to efficient power control technology to improve system capacity.

已有的前向功率控制方案一般采用较简单的控制方式,如简单的基于测量报告的方法。 Existing forward power control scheme generally use relatively simple control manner, as a simple method based on the measurement report. 在该方法中,移动台测量来自基站的经过解调后的前向链路帧质量并记录该测量结果,在选择门限方式时,如果误帧达到一个门限,或在选择周期方式时,如果测量达到一个周期门限,则移动台通过反向链路向基站反馈报告测量统计结果,供基站根据该测量报告调整其前向链路增益放大器的功率增益值。 In this method, the mobile station measures from the base station through the front demodulated and records the measurement result to the link frame quality, when the selection threshold mode, if the bad frame reaches a threshold, or when selecting a periodic manner, if the measurement period reaches a threshold, the mobile station measures the feedback reports statistical results to the base station via a reverse link, the base station for adjusting the power of its forward link gain value of the gain of the amplifier according to the measurement report.

其调整方法是:在门限方式下,只要基站接收到测量报告,就作增大前向链路功率增益的处理,反之,只要基站未接收到测量报告,就作连续降低前向链路功率增益的处理;而在周期方式下,如果测量报告显示帧质量较差,则基站就作增大前向链路功率增益的处理,如果测量报告显示帧质量较好,则基站就作减小前向链路功率增益的处理。 The adjustment method is: under the threshold, as long as the base station receiving the measurement report, to be processed before the forward link power gain increases, and vice versa, as long as the station has not received the measurement report, on the link for the power gain decreases continuously before process; and in a periodic manner, if the measurement report shows frame quality is poor, then the base station for processing forward link power gain increase before, if the measurement report shows frame quality is better, before the base station will be reduced to processing link power gain.

由前述分析可知,在当前的CDMA系统中,一般的前向链路功率控制方法是根据解码后的前向链路帧质量状况对当前的前向链路进行功率控制的。 From the foregoing analysis, the current CDMA systems, the former is typically a forward link power control according to the preceding frame decoded forward link quality of the current link before the power control method. 但移动台检验前向信道帧质量并上报测量报告的过程一般较慢,而且在选择门限值(包括误帧门限与周期门限)时存在矛盾,因为如果门限选大,则控制延时也大,使服务质量难以满足;如果门限选小,则会因偶然因素造成的误帧导致前向功率大幅度上升,减小了前向容量。 However, before the mobile station tests the channel frame quality and reports the measurement report process is generally slow, and in the selection threshold (including bad frame threshold and cycle threshold) contradictory time, because if the threshold is selected large, the control delay is large make it difficult to meet the quality of service; if the threshold is selected small, the error due to accidental factors leading to the rise to power of the front frame greatly reduces the forward capacity.

本发明的目的是设计一种码分多址移动通信系统的前向功率控制方法,可减小由于偶然因素造成的功率浪费,既能对业务质量变化快速响应、又能较准确地对业务质量进行估计。 Object of the present invention to the former power control method to design a CDMA mobile communication system, can reduce power waste due to accidental factors, both rapid response to changes in service quality, but the quality of service more accurately estimated.

实现本发明目的的技术方案是这样的:一种码分多址移动通信系统的前向功率控制方法,其特征在于是一种基于连续误帧测量报告的前向功率控制方法,包括:A.移动台对接收的来自基站的前向链路信号进行数据信息处理恢复前向帧,并对该前向帧进行帧质量检查;B.移动台在发现有N个连续的坏帧时,通过反向链路向基站反馈发送帧质量测量报告,N是正整数;C.同时,移动台停止对随后的M个前向帧的测量,并在M帧后重复执行步骤A至C,M是正整数;D.基站对接收的来自移动台的反向链路信号进行数据信息处理,并从恢复的反向帧中提取帧质量测量报告;E.基站根据该帧质量测量报告对当前的前向链路发射功率作增大或减小的调整。 Purposes of this invention the technical solution is as follows: To a former power control method for a CDMA mobile communication system, characterized by being a precursor to a power control method of the continuous erroneous frames measurement report, including those based on: A. before the mobile station received from the base station forward link data signal to recover the pre-processed information frames, the frame and the forward frame QA;. B mobile station has found N consecutive bad frames, by reverse sending feedback to the base link frame quality measurement report, N being a positive integer; C Meanwhile, the mobile station stops measuring the former subsequent M of the frame, and repeat steps a to C in the M frames, M is a positive integer; D. reverse link signals from the base station to the mobile station information processing received data, and extracts a frame from the reverse frame quality measurement report recovered;. E station based on the frame quality measurement report to the current forward link transmit power adjustment for increasing or decreasing.

所述的帧质量测量报告包括当前所测量的总帧数、所测量的环帧数及所测量的连续误帧总数,分别记录在总帧数计数器、环帧数计数器及连续误帧数计数器中。 Said frame quality measurement report comprises total frames currently measured, the measured ring and the total number of frames consecutive bad frames on the measured total number of frames are recorded in the counter, the counter ring and the continuous bad frames frame counter .

所述的步骤A中,还包括用连续误帧数计数器对连续检查出的误帧进行计数,和在连续误帧数小于N时,当接收到一个好帧时对该连续误帧数计数器进行减1操作。 Said step A further comprises a continuous erroneous frame check out counter of consecutive error frames is counted, and when the continuous error number is less than N, a good frame when receiving the continuous bad frames counter decremented.

所述的步骤B中,还包括同时对帧质量测量报告的总帧数计数器、环帧数计数器及连续误帧数计数器进行清零操作。 Said step B, further comprising a frame quality measurement report while the total number of frames counter, and a continuous counter ring frame bad frame counter is cleared operation.

所述的步骤E中,调整前向链路发射功率进一步包括:a.根据帧质量测量报告中的测量总帧数N_T与坏帧数N_B,计算功率放大器增益调整量P,P=N_B/N_T; Said step E, further comprising adjusting the front forward link transmit power:. A total number of frames based on the measurement N_T frame quality measurement report from the bad frames N_B, calculating amplifier gain adjustment P, P = N_B / N_T ;

b.根据预定的目标误帧率FER和根据功率放大器增益值调整单位量DG_union,计算功率放大器增益调整量的增量DG_up与减量DG_down,使DG_up=DG_union,DG_down=(DG_union)-FER×FER/P=(DG_up)-FER×FER/P;c.在基站接收到帧质量测量报告后将当前的功率放大器增益值G调整为G=G×DG_up,在基站没有接收到帧质量测量报告时将当前的功率放大器增益值G调整为G=G×DG_down。 b. frame error rate FER and adjustment unit according to the amount of power amplifier gain DG_union target value according to a predetermined calculated amount of a power amplifier gain adjustment increment and decrement DG_up DG_down, so DG_up = DG_union, DG_down = (DG_union) -FER × FER / P = (DG_up) -FER × FER / P;. c after the base station receives the quality measurement report of the current frame of the power amplifier to adjust the gain value G G = G × DG_up, the frame is not received at the base station when the quality measurement report the current is adjusted to the power amplifier gain value G G = G × DG_down.

所述的功率放大器增益值调整单位量DG_union的初始值是功率放大器初始增益值的105%-110%。 The initial value of the amplifier gain adjusting unit quantity DG_union 105% -110% of the initial gain value of the amplifier.

所述的功率放大器增益调整量P及所述的DG_down=(DG_union)-FER×FER/P=(DG_up)-FER×FER/P;中的(DG_up)-FER×FER是预先保存在一个数值表中,经查表并利用线性差值法计算(DG_up)-FER×FER/P。 The adjustment amount of the power amplifier gain and the P DG_down = (DG_union) -FER × FER / P = (DG_up) -FER × FER / P; in (DG_up) -FER × FER value is stored in advance in a table, the look-up table calculated using linear interpolation method (DG_up) -FER × FER / P.

所述的步骤A至C是由移动台端的基带子系统、帧质量检测单元和功率控制子系统循环执行的,进一步包括:a.由基带子系统对前向链路信号进行基带处理,将恢复出的前向帧送往帧质量检测单元;b.由帧质量检测单元检查前向帧的质量,形成测量报告并向功率控制子系统发送;c.功率控制子系统每接收一次来自帧质量检测单元的测量报告,就将内部的总帧数计数器加1;在发现该测量报告中报告有误帧时,则同时将内部的坏帧数计数器加1,并同时将内部的连续误帧数计数器加1;在发现该测量报告中报告没有误帧,则检查连续误帧数计数器,在连续误帧数计数器不为零时,将其减1,在连续误帧数计数器为零时,则保持连续误帧数计数器不变;d.在功率控制子系统检查连续误帧数计数器的计数值为N时,则统计总帧数计数器、坏帧数计数器和连续误帧数计 The steps A to C by the mobile station side based subsystem, a frame quality detection unit and a power control sub-loop is executed, further comprising:. A link signal to the baseband processing by the baseband former system, restore sent out to the front frame of the frame quality detection means;. b from the previous frame quality detection unit checks the frame quality, to form a measurement report transmission power control subsystem;. c power control subsystem receives the detection time of each mass from the frame measurement reporting unit, the total number of frames will be inside the counter is incremented by 1; when it finds the measurement report reported error frame, the bad frame while keeping the internal counter is incremented by 1, and simultaneously the interior of the continuous erroneous frames counter plus 1; found no report the measurement report erroneous frame, the error frame number counter is checked continuously, in the continuous bad frames counter is not zero, it is decremented by 1, the number of frames in the continuous error counter is zero, the holding consecutive bad frames counter unchanged;. d on power control subsystem checks the continuous erroneous frames counter count value N, the total number of frames the statistics counter, the bad frame counter and the count of continuous erroneous frames 器的值,将含有当前总帧数、坏帧数和连续误帧数的测量报告,发往基带子系统,同时将总帧数计数器、坏帧数计数器和连续误帧数计数器清零,并在停止接收随后M帧的帧质量测量后重新开始帧质量测量。 'S value, the measurement report containing the current total number of frames, the continuous erroneous frames and bad frames, and sent to the baseband subsystem, while the total number of frames counter, counter bad frame counter is cleared and the continuous erroneous frames, and receiving a subsequent frame is stopped M frame quality measurement is restarted after the frame quality measurement.

所述的步骤D和E是由基站端的反向信息处理子系统、功率控制子系统和功率放大器顺序执行的,进一步包括:a.由反向信息处理子系统从恢复的反向帧中提取测量报告,并送往功率控制子系统;b.由功率控制子系统根据测量报告内容决定功率增益调整值DG_up或DG_down,并下达给功率放大器;c.功率放大器将原来的功率放大器的放大倍数乘以该功率增益调整值DG_up或DG_down,得到一个新的功率放大器放大倍数。 According to steps D and E by the base station subsystem inversion information processing terminal, and a power amplifier power control subsystem sequentially, further comprising:. A measure extracted from the reverse frame information restored by the inverse processing subsystem report, and sent to the power control subsystem;. b by the power control subsystem the contents of the measurement report gain adjustment value determines the power or DG_down according DG_up, and issued to the power amplifier;. c magnification of the power amplifier PA is multiplied by the original the power gain adjustment value DG_up or DG_down, get a new power amplifier magnification.

所述的决定功率增益调整值DG_up或DG_down进一步包括:在接收到测量报告时,将功率增益调整值设为一固定值DG_up,从测量报告中获得总帧数N_T,坏帧数N_B,计算P=N_B/N_T,并根据预定的目标误帧率FER,设置DG_down=(U_up)-FER×FER/P,在没有接收到测量报告时,将功率增益调整值设为DG_down. Determining the power or gain adjustment values ​​DG_up DG_down further comprising: upon receiving the measurement report, the power gain adjustment value is set to a fixed value DG_up, N_T total number of frames is obtained, from bad frames N_B measurement report, calculate P = N_B / N_T, and in accordance with a predetermined target frame error rate FER, provided DG_down = (U_up) -FER × FER / P, in the measurement report is not received, the power gain adjustment value to DG_down.

所述的功率增益调整值DG_up的取值是参照长期测量的前向功率的方差得出的,取为功率放大器初始增益值的105%~110%。 DG_up power gain adjustment value is the variance of the values ​​measured with reference to a long-term forward power derived, taken as 105% to 110% of the initial gain value of the power amplifier.

所述的(DG_up)-FER×FER以及一组间隔值固定的P,保存在所述的功率控制子系统中,经查表获得并利用线性差值来计算DG_down=(DG_up)-FER×FER/P。 Said (DG_up) -FER × FER values ​​and a set of fixed interval P, stored in the power control subsystem, the look-up table is obtained and calculated DG_down = (DG_up) -FER × FER using linear interpolation / P.

所述的连续误帧数N为2-4,所述的停止测量的帧数M为4。 The continuous erroneous frame number N is 2-4, the stop 4 is measured by M frames.

本发明的一种在CDMA系统中实现前向功率控制的方法,其中CDMA系统包括一个基站系统,一个移动台系统,还包括由基站到移动台的前向链路,以及由移动台到基站的反向链路。 Before one inventive CDMA system implemented in the method for power control, wherein the system comprises a CDMA base station system, a mobile station system, the base station further comprises a forward link to the mobile station and a base station to the mobile station the reverse link.

本发明的码分多址移动通信系统的前向功率控制方法是利用移动台对连续误帧的检测并向基站上报帧质量测量报告而实现的,基站接收来自移动台反向链路的反馈信号,经过必要的数据信息处理后,恢复反向帧,并提取其中的帧质量测量报告,基站根据该帧质量测量报告决定前向链路发射功率的大小。 Prior to the power control method of the CDMA mobile communication system according to the present invention is to utilize the mobile station reports the detection of a frame quality measurement report to the base station is achieved consecutive bad frames, the base station receives a feedback signal from the mobile station reverse link after the necessary data processing pass, the reverse recovery frame, and extracts the frame wherein the quality measurement report, the base station forward link transmit power in accordance with the frame quality measurement report before the determined size. 在移动台对连续误帧计数时,为了避免偶然一个好帧的影响,对于连续接收误帧(小于N)后又接收到一个好帧时,则对连续误帧计数器进行减1操作,而不是作清零操作,以提高对连续误帧接收的灵敏度。 In the mobile station the continuous erroneous frames count, in order to avoid accidental impact of a good frame, then a good frame when receiving the error frames for continuous reception (less than N), the successive error frame counter decremented, instead of cleared for operation, in order to improve the sensitivity of consecutive bad frames received pair.

本发明的码分多址移动通信系统的前向功率控制方法,是一种根据帧质量测量报告进行前向功率控制的方法,包括:利用连续误帧作为信道质量判别标准;以预定的连续误帧数作为帧质量测量报告触发门限;根据误帧和好帧个数动态地调整功率放大器增益;和可变幅度地调整功率放大器增益。 Prior to the power control method of the CDMA mobile communication system according to the present invention, a frame quality measurement according to the previous reports to the power control method, comprising: using consecutive bad frames as the channel quality criterion; predefined consecutive erroneous frame number as a frame quality measurement report triggering threshold; dynamically adjust the power amplifier gain according to the number of errored frames and a good frame; and a variable gain amplifier to adjust the amplitude. 有益于降低前向发射功率、减小前向干扰和提高前向容量。 Before the beneficial decrease transmit power control to reduce interference and to increase the capacity of forward.

下面结合实施例及附图进一步说明本发明的方法。 In conjunction with the accompanying drawings and the following embodiments further illustrate the process of the present invention.

图1是码分多址移动通信系统的基本结构示意框图。 1 is a schematic block diagram of a basic configuration of the CDMA mobile communication system.

图2是移动台端采用本发明方法时的处理过程示意框图。 FIG 2 is a schematic block diagram of a mobile station side processing when the method of the present invention.

图3是图2中功率控制子系统的结构框图。 FIG 3 is a block diagram in FIG 2 the power control subsystem.

图4是基站端采用本发明方法时的处理过程示意框图。 FIG 4 is a schematic block diagram of a processing procedure when the base station side using the method of the present invention.

图1说明前已述及,不再赘述。 1 illustrates mentioned before, is omitted.

参见图2,图中示出移动台端采用本发明方法时的处理过程。 Referring to Figure 2, there is shown a mobile station side processing procedure when using the method of the present invention. 移动台100端基本包括天线子系统101、复用单元102、基带子系统103、帧质量检测单元104、功率控制子系统105和业务子系统106。 Mobile terminal 100 includes an antenna base station subsystem 101, a multiplexing unit 102, the baseband subsystem 103, frame quality detection unit 104, the power control subsystem 105 and subsystem 106 operations.

其中,移动台端的功率控制子系统105包括有三个计数器,如图3中所示,分别为总帧数计数器107、坏帧数计数器108和连续误帧数计数器109。 Wherein the mobile station side power control subsystem 105 comprises three counters, as shown in FIG. 3, the total number of frames respectively, counter 107, frame counter 108 and the continuous bad bad frame counter 109.

移动台100端的前向功率控制流程为:步骤1,移动台100接收来自基站110(参见图4)的前向链路信号,并通过天线子系统101送往复用单元102; The mobile station 100 side forward power control process: Step 1, the mobile station 100 receives forward link signals from the base station 110 before (see FIG. 4), and sent to the multiplexing unit 102 through the antenna subsystem 101;

步骤2,复用单元102在前向频点上分离出前向链路信号,并送往基带子系统103;步骤3,基带子系统103对前向链路信号进行必要的基带处理,恢复出前向帧,并送往帧质量检测单元104;步骤4,帧质量检测单元104检查前向帧的质量,形成测量报告并向功率控制子系统105发送;步骤5,功率控制子系统105每接收一次来自帧质量检测单元104的测量报告,就将内部的总帧数计数器107加1;如果发现该测量报告中报告有误帧,则同时将坏帧数计数器108加1,并同时将连续误帧数计数器加1;如果发现该测量报告中没有误帧报告,则检查连续误帧数计数器109,如果连续误帧数计数器109不为零,则将其减1,如果连续误帧数计数器109已经为零,则保持连续误帧数计数器109不变;步骤6,功率控制子系统105检查连续误帧数计数器109,如果连续误帧数计数器计数值为N(N为预定的 Step 2, the multiplexing separation unit 102 to the first frequency on a forward link signal, and sent to the baseband subsystem 103; step 3, the baseband subsystem necessary to link baseband signal former 103, to restore the former frame, and sent to the frame quality detection unit 104; step 4, the front frame quality detection unit 104 checks the frame quality, to form a measurement report transmission power control subsystem 105; step 5, the power control subsystem 105 receives each time from measurement report frame quality detection unit 104, the internal counter 107 will be the total number of frames plus 1; if it is found that the error reported in the measurement report frame, the bad frame counter 108 at the same time plus 1, while the continuous bad frames counter is incremented by 1; if it is found that the measurement report reported no frame error, check error frame counter 109 continuously, if continuous frame error counter 109 is not zero, it is decremented by 1, if the continuous bad frames as counter 109 has zero, the counter 109 remains unchanged continuous bad frames; step 6, the power control subsystem 105 continuously checks bad frame counter 109, if the continuous bad frame counter value N (N is a predetermined 许连续误帧数,可以选择2-4),则统计各个计数器包括总帧数计数器107、坏帧数计数器108和连续误帧数计数器109的值,获得当前的总帧数、坏帧数和连续误帧数,并生成含有以上各统计值的测量报告,发往基带子系统103,同时将各个计数器107、108和109清零,并停止接收随后M(如4)帧的帧质量测量结果,即在M帧后再重新开始接收帧质量测量结果;步骤7,基带子系统103对测量报告进行必要的基带和射频处理后,将所获得的射频信号送往复用单元102;步骤8,复用单元102将射频信号(即来自反向发送处理子系统的射频信号),在反向频点上送往天线子系统101进行发射。 Xu continuous erroneous frames, can be selected 2-4), each of the statistical counter 107 includes the value of the bad frame counter 108 and the successive error frame number counter 109 counters total number of frames, to obtain the current total number of frames and bad frames consecutive bad frames, and generate a measurement report containing statistical values ​​of the above, sent to the baseband subsystem 103, while the respective counter 107, 108 and 109 is cleared, and then stops the reception quality measurement result of M frames (e.g., four) frames , i.e. restarts quality measurement results in the received frame after frame M; step 7, the belt system 103 based on the measurement reports necessary baseband and RF processing, the obtained RF signals sent to multiplexing section 102; step 8, the radio frequency signal multiplexing unit 102 (i.e., the reverse transmission from the RF signal processing subsystem), sent to the antenna subsystem 101 to transmit on the reverse frequency.

参见图4,图中示出基站端采用本发明方法时的处理过程。 Referring to Figure 4, there is shown a processing procedure when the base station side using the method of the present invention. 基站110端基本包括天线子系统111、复用单元112、功率放大器113、功率控制子系统114、反向信息处理子系统115、前向基带子系统116和一个业务子系统117。 Base station 110 includes an antenna end subsystem 111, a multiplexing unit 112, power amplifier 113, the power control subsystem 114, processing subsystem 115 inversion information, prior to the baseband subsystem 116 and a business system 117. 其中的功率控制子系统114中保存有一个数值表用于差值计算。 Wherein the power control subsystem stores a table of values ​​for calculating a difference 114.

基站110端的前向功率控制流程为:步骤9,基站的天线子系统111在反向频点上接收来自移动台100反馈的反向链路信号,并将信号送往复用单元112;步骤10,复用单元112将接收到的反向信号送往反向信息处理子系统115,进行必要的前端放大、基带处理和反向帧恢复;步骤11,反向信息处理子系统115从反向帧中提取测量报告,并送往功率控制子系统114;步骤12,功率控制子系统114根据测量报告内容决定功率增益调整值,并下达给功率放大器113,其中决定功率增益调整值的方法是:在接收到测量报告时,将功率增益调整值设为一固定值DG_up,也即功率放大器增益值调整单位量DG_union,该固定值的取值可参照长期测量的前向功率的方差,一般可取为功率放大器初始增益值的105%~110%,从测量报告中获得总帧数N_T,坏帧数N_B,计算功率放大器增益调整量P=N_B/N_T Power control flow to the front end of the base station 110: Step 9, the antenna of the base station subsystem 111 receives feedback from the mobile station reverse link signal 100, and signal to the multiplexing unit 112 on a reverse frequency; Step 10 the received signal to the reverse, inverse multiplexing unit 112 of the information processing subsystem 115, the necessary front end amplification and baseband recovery reverse frame; step 11, the reverse from the reverse frame-information handling system 115 extracting a measurement report, and sent to the power control subsystem 114; step 12, the power control subsystem 114 determines the power content of the measurement report gain adjustment value, and issued to the power amplifier 113, wherein the method determines the power gain adjustment value is based on: the upon receiving the measurement report, the power gain adjustment value is set to a fixed value DG_up, i.e. amplifier gain adjustment unit quantity DG_union, the fixed value may be the value with reference to a long-term variance of the measured forward power, power is generally preferable 105% to 110% of the initial gain value of the amplifier, to obtain the total number of frames N_T, from bad frames N_B measurement report, calculates the power amplifier gain adjustment P = N_B / N_T ,并根据预定的目标误帧率FER,设置DG_down=(DG_up)-FER×FER/P,其中计算过程利用功率控制子系统114中保存的数值表T1进行差值计算以减少计算量,该数值表T1中保存的是(DG_up)-FER×FER以及P=0.5%至4.55%(近似为5%)的间隔为0.05的十个值,在计算中,对于具体的P可以查表并利用线性差值来计算具体的DG_down;本步骤中,在没有接收到测量报告时,将功率增益调整值设为DG_down;步骤13,功率放大器113接收到功率增益调整值U_up或U_down后,将原来的功率放大器的放大倍数乘以该功率增益调整值,G=G×DG_up,G=G×DG_down,得到一个新的功率放大器放大倍数,并以此放大倍数对来自业务子系统117的经过前向基带子系统116处理的前向射频信号进行功率放大; And according to a predetermined target frame error rate FER, provided DG_down = (DG_up) -FER × FER / P, where the calculation process by using the power control subsystem 114 stored in table T1 of the difference values ​​is calculated to reduce the amount of calculation, the value is stored in table T1 (DG_up) -FER × FER and P = 0.5% to 4.55% (approximately 5%) of the interval of ten values ​​of 0.05, in the calculation, for a particular P may be look-up table and using a linear calculating the difference between the specific DG_down; in this step, the measurement report is not received, the power gain adjustment value to DG_down; step 13, the power amplifier 113 receives the gain adjustment values ​​or U_up U_down, the original power amplification of the amplifier multiplied by the power gain adjustment value, G = G × DG_up, G = G × DG_down, get a new magnification power amplifier, and thus the magnification of the front group through the belt 117 from the service subsystem 116 forward RF signal processing system of the power amplification;

步骤14,经过功率放大器113放大处理后的射频信号在前向频点上送往复用单元112;步骤15,复用单元112对来自功率放大器113的射频信号进行分离并送往天线子系统111进行发射。 Step 14, the radio frequency signal through the power amplifier 113 after enlarging processing is sent forward to the frequency multiplexing section 112; Step 15, the multiplexing unit 112 is separated from the RF signal amplifier 113 and sent to antenna subsystem 111 launch.

本发明的方法是基于连续误帧测量报告的在码分多址系统中实现前向功率控制的方法,利用现有的CDMA系统所提供的测试参量,经试验表明其切实可行,能达到降低前向发射功率、减小前向干扰和提高前向容量的目的。 The method of the present invention is based on parametric test prior to the CDMA system implemented in a method for power control, the CDMA system using the existing continuous bad frames measurement reports provided by practical tests showed that, prior to reduction can be achieved to transmit power, before the purpose of reducing the capacity and increasing interference toward the front.

Claims (13)

1.一种码分多址移动通信系统的前向功率控制方法,其特征在于是一种基于连续误帧测量报告的前向功率控制方法,包括:A.移动台对接收的来自基站的前向链路信号进行数据信息处理恢复前向帧,并对该前向帧进行帧质量检查;B.移动台在发现有N个连续的坏帧时,通过反向链路向基站反馈发送帧质量测量报告,N是正整数;C.同时,移动台停止对随后的M个前向帧的测量,并在M帧后重复执行步骤A至C,M是正整数;D.基站对接收的来自移动台的反向链路信号进行数据信息处理,并从恢复的反向帧中提取帧质量测量报告;E.基站根据该帧质量测量报告对当前的前向链路发射功率作增大或减小的调整。 Prior to 1. A power control method of CDMA mobile communication system, characterized by being based on the former power control method of the continuous measurement report erroneous frames, comprising:. A received from the base station before the mobile station for forward link data signal to recover the pre-processed information frames, the frame and the forward frame QA;. B mobile station has found N consecutive bad frames, a feedback frame transmitted to the base station via a reverse link quality measurement report, N being a positive integer;. C Meanwhile, the mobile station stops the subsequent measurement of the M forward frame and repeat steps a to C in the M frames, M is a positive integer; D base station from the receiving mobile station. the reverse link signal for data processing, and extracts a frame from the reverse frame quality measurement report recovered;. E station to the current forward link transmission power to be based on the quality measurement report frame to increase or decrease the Adjustment.
2.根据权利要求1所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的帧质量测量报告包括当前所测量的总帧数、所测量的环帧数及所测量的连续误帧总数,分别记录在总帧数计数器、环帧数计数器及连续误帧数计数器中。 The power control method of the former To a CDMA mobile communication system according to claim 1, wherein: said frame comprises a loop frame quality measurement report total frames currently measured, the measured total number of the continuous erroneous frames and the measured total number of frames are recorded in the counter, the counter ring and the continuous bad frames frame counter.
3.根据权利要求1或2所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的步骤A中,还包括用连续误帧数计数器对连续检查出的误帧进行计数,和在连续误帧数小于N时,当接收到一个好帧时对该连续误帧数计数器进行减1操作。 The power control method of the former To a CDMA mobile communication system of claim 1 or claim 2, wherein: said step A, further comprising a counter with a continuous erroneous frames to check out a continuous error frames is counted, and when the continuous error number is less than N, a good frame when receiving the continuous bad frames counter decremented.
4.根据权利要求1或2所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的步骤B中,还包括同时对帧质量测量报告的总帧数计数器、环帧数计数器及连续误帧数计数器进行清零操作。 The power control method of the former To a CDMA mobile communication system of claim 1 or claim 2, wherein: said step B, further comprising a total number of frames while the frame quality measurement report counter, a continuous ring frame counter and frame counter is cleared erroneous operation.
5.根据权利要求1所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的步骤E中,调整前向链路发射功率进一步包括:a.根据帧质量测量报告中的测量总帧数N_T与坏帧数N_B,计算功率放大器增益调整量P,P=N_B/N_T;b.根据预定的目标误帧率FER和根据功率放大器增益值调整单位量DG_union,计算功率放大器增益调整量的增量DG_up与减量DG_down,使DG_up=DG_union,DG_down=(DG_union)-FER×FER/P=(DG_up)-FER×FER/P;c.在基站接收到帧质量测量报告后将当前的功率放大器增益值G调整为G=G×DG_up,在基站没有接收到帧质量测量报告时将当前的功率放大器增益值G调整为G=G×DG_down。 The power control method of the former To a CDMA mobile communication system according to claim 1, wherein: said step E, further comprising adjusting the front forward link transmit power:. A frame according to measuring the quality measurement report total number of frames and bad frames N_T N_B, calculating amplifier gain adjustment P, P = N_B / N_T;. b and frame error rate FER adjustment unit amount DG_union the power amplifier according to a predetermined target gain value calculating an adjustment amount of the power amplifier gain increment and decrement DG_up DG_down, so DG_up = DG_union, DG_down = (DG_union) -FER × FER / P = (DG_up) -FER × FER / P; c base station receives the frame. after quality measurement report of the current amplifier to adjust the gain value G G = G × DG_up, when the base station does not receive a frame quality measurement report to the current amplifier to adjust the gain value G G = G × DG_down.
6.根据权利要求5所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的功率放大器增益值调整单位量DG_union的初始值是功率放大器初始增益值的105%-110%。 The power control method of the former to the CDMA mobile communication system according to claim 5, wherein: the initial value of the amplifier gain adjustment of the power amplifier unit quantity DG_union initial gain value 105% -110%.
7.根据权利要求5所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的功率放大器增益调整量P及所述的DG_down=(DG_union)-FER×FER=(DG_up)-FER×FER/P;中的(DG_up)-FER×FER是预先保存在一个数值表中,经查表并利用线性差值法计算(DG_up)-FER×FER/P。 The former power control method To a CDMA mobile communication system according to claim 5, wherein: the amplifier gain adjustment amount P and the DG_down = (DG_union) -FER × FER = (DG_up) -FER × FER / P; in (DG_up) -FER × FER value is previously stored in a table, the look-up table and calculating (DG_up) -FER × FER / P using the linear interpolation method.
8.根据权利要求1所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的步骤A至C是由移动台端的基带子系统、帧质量检测单元和功率控制子系统循环执行的,进一步包括:a.由基带子系统对前向链路信号进行基带处理,将恢复出的前向帧送往帧质量检测单元;b.由帧质量检测单元检查前向帧的质量,形成测量报告并向功率控制子系统发送;c.功率控制子系统每接收一次来自帧质量检测单元的测量报告,就将内部的总帧数计数器加1;在发现该测量报告中报告有误帧时,则同时将内部的坏帧数计数器加1,并同时将内部的连续误帧数计数器加1;在发现该测量报告中报告没有误帧,则检查连续误帧数计数器,在连续误帧数计数器不为零时,将其减1,在连续误帧数计数器为零时,则保持连续误帧数计数器不变;d.在功率控制子系统检查 The power control method of the former To a CDMA mobile communication system according to claim 1, wherein: said steps A to C by the mobile station side based subsystem, frame quality detection unit, and the power control loop execution subsystem, further comprising: a front base tape by the forward link signal to the baseband processing system, the recovered previous frame sent to the frame quality detection units; b from the frame quality detection unit checked before. the frame quality, to form a measurement report transmission power control subsystem;. c each power control subsystem receives the measurement report from a frame quality detection unit, the total number of frames will be internal counter is incremented; the measurement report found when a frame error is reported, while the inside of the bad frame counter is incremented by 1, and simultaneously the interior of the continuous erroneous frames counter is incremented by 1; found no report the measurement report erroneous frame, the error frame number counter is checked continuously when continuous frame error counter is not zero, it is decremented by 1, the number of frames in the continuous error counter is zero, the continuous bad frame counter remains unchanged; D power control subsystem checks. 续误帧数计数器的计数值为N时,则统计总帧数计数器、坏帧数计数器和连续误帧数计数器的值,将含有当前总帧数、坏帧数和连续误帧数的测量报告,发往基带子系统,同时将总帧数计数器、坏帧数计数器和连续误帧数计数器清零,并在停止接收随后M帧的帧质量测量后重新开始帧质量测量。 Continued frame error counter count value N, the total number of frames counter, and the counter value of the bad frame counter is the continuous erroneous frames statistics measurement report containing the current total number of frames and bad frames of the continuous erroneous frames and sent to the baseband subsystem, while the total number of frames counter, counter bad frame counter is cleared and the continuous erroneous frames, and then stops the reception of M frames after frame quality measurement frame quality measurement is restarted.
9.根据权利要求1所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的步骤D和E是由基站端的反向信息处理子系统、功率控制子系统和功率放大器顺序执行的,进一步包括:a.由反向信息处理子系统从恢复的反向帧中提取测量报告,并送往功率控制子系统;b.由功率控制子系统根据测量报告内容决定功率增益调整值U_up或U_down,并下达给功率放大器;c.功率放大器将原来的功率放大器的放大倍数乘以该功率增益调整值U_up或U_down,得到一个新的功率放大器放大倍数。 9. The power control method of the former To a CDMA mobile communication system according to claim 1, wherein: said steps D and E is the reverse side information processing subsystem base station, the power control sub- sequence performed by the system and a power amplifier, further comprising: a measurement report extracting information processing subsystem from the reverse recovery of the reverse frame, and sent to the power control subsystem; B control subsystem in accordance with the content of the measurement report by a power. It determines the power or gain adjustment values ​​U_up U_down, and issued to the power amplifier;. C amplifier magnification of the original power of the power amplifier multiplied by the gain adjustment value or U_up U_down, get a new power amplifier magnification.
10.根据权利要求9所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的决定功率增益调整值U_up或U_down进一步包括:在接收到测量报告时,将功率增益调整值设为一固定值U_up;从测量报告中获得总帧数N_T,坏帧数N_B,计算P=N_B/N_T,并根据预定的目标误帧率FER,设置U_down=(U_up)-FER×FER/P;在没有接收到测量报告时,将功率增益调整值设为U_down。 10. The power control method of the former To a CDMA mobile communication system according to claim 9, wherein: said gain adjustment value determines the power or U_down U_up further comprising: when receiving the measurement report, the power gain adjustment value is set to a fixed value U_up; N_T obtained total number of frames, N_B bad frames, calculates P = N_B / N_T, and in accordance with a predetermined frame error rate FER target, provided U_down = (U_up) from measurement report -FER × FER / P; in the measurement report is not received, the power gain adjustment value to U_down.
11.根据权利要求10所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的功率增益调整值U_up的取值是参照长期测量的前向功率的方差得出的,取为功率放大器初始增益值的105%~110%。 11. A method for controlling power to the former in accordance with claim CDMA mobile communication system according to claim 10, wherein: a power gain adjustment values ​​U_up values ​​is the variance of the long-term measurement of the forward reference power the results, taken as 105% to 110% of the initial gain value of the power amplifier.
12.根据权利要求10所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的(U_up)-FER×FER以及一组间隔值固定的P,保存在所述的功率控制子系统中,经查表获得并利用线性差值来计算U_down=(U_up)-FER× FER/P Front to 12. A power control method of CDMA mobile communication system according to claim 10, wherein: said (U_up) -FER × FER and a fixed interval value P, stored in the power control subsystem, the look-up table is obtained and calculated U_down = (U_up) -FER × FER / P using linear interpolation
13.根据权利要求1所述的一种码分多址移动通信系统的前向功率控制方法,其特征在于:所述的连续误帧数N为2-4,所述的停止测量的帧数M为4。 Front to 13. A power control method of CDMA mobile communication system according to claim 1, wherein: said successive error frame number N is 2-4, the number of frames measured stop M 4.
CNB011164115A 2001-04-11 2001-04-11 Forward power control method for CDMA mobile communication system CN1138375C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB011164115A CN1138375C (en) 2001-04-11 2001-04-11 Forward power control method for CDMA mobile communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB011164115A CN1138375C (en) 2001-04-11 2001-04-11 Forward power control method for CDMA mobile communication system

Publications (2)

Publication Number Publication Date
CN1379560A true CN1379560A (en) 2002-11-13
CN1138375C CN1138375C (en) 2004-02-11

Family

ID=4662470

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB011164115A CN1138375C (en) 2001-04-11 2001-04-11 Forward power control method for CDMA mobile communication system

Country Status (1)

Country Link
CN (1) CN1138375C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100499430C (en) 2003-09-11 2009-06-10 华为技术有限公司 Method of forward direction power control of CDMA cluster communication system
CN101568140B (en) 2009-06-15 2012-08-15 华为技术有限公司 Power detection methods based on discontinuous transmission and base station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100499430C (en) 2003-09-11 2009-06-10 华为技术有限公司 Method of forward direction power control of CDMA cluster communication system
CN101568140B (en) 2009-06-15 2012-08-15 华为技术有限公司 Power detection methods based on discontinuous transmission and base station

Also Published As

Publication number Publication date
CN1138375C (en) 2004-02-11

Similar Documents

Publication Publication Date Title
CA2299535C (en) Method for the transmission of speech inactivity with reduced power in a tdma system
JP3375943B2 (en) Method for selecting a combination of a modulation scheme and a channel coding scheme in a digital communication system
US7428426B2 (en) Method and apparatus for controlling transmit power in a wireless communications device
EP1010305B1 (en) Method and apparatus for determining the rate of received data in a variable rate communication system
KR100584028B1 (en) Multicast signal transmission power control method and base station using the same
EP1064732B1 (en) Method and system for providing an estimate of the signal strength of a received signal
EP1971041B1 (en) Method and apparatus for power control in a wireless communication system
CA2023715C (en) Digital signal quality evaluation circuit using synchronization patterns
CN100461756C (en) Estimation of channel quality for wireless communication network
EP1912373B1 (en) Method and system for improving the reliability of quality feedback in a wireless communications system
EP0473297A2 (en) Mobile data telephone
JP2877248B2 (en) Transmission in Cdma system power control method and apparatus
CA2229815C (en) Method and apparatus for power control of a first channel based on a signal quality of a second channel
US6195337B1 (en) Encoding mode control method and decoding mode determining apparatus
RU2267861C2 (en) Method and device for controlling communications system with gating of transmission
CN1144391C (en) Apparatus and method for power control in wireless communication system
US6782059B2 (en) Discontinuous transmission (DTX) detection
US20030189911A1 (en) Method and system for controlling transmission energy in a variable rate gated communication system
CN1135731C (en) Fast power control in variable data rate mobile CDMA communication system
CN1111987C (en) Method and apparatus for power control in communication system
US7769391B2 (en) Method and apparatus in a telecommunication system
CN1124697C (en) Method and apparatus for controlling signal power in a communication system
US6389296B1 (en) Transmission power control method
CN1130035C (en) Forward link transmission power control during soft handoff
US20040203430A1 (en) Peak power reduction using windowing and filtering

Legal Events

Date Code Title Description
C10 Request of examination as to substance
C06 Publication
C10 Request of examination as to substance
C14 Granted