CN102026351A - Method and device for controlling power of downlink closed loop in long-term evolution system - Google Patents

Method and device for controlling power of downlink closed loop in long-term evolution system Download PDF

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CN102026351A
CN102026351A CN 201010619659 CN201010619659A CN102026351A CN 102026351 A CN102026351 A CN 102026351A CN 201010619659 CN201010619659 CN 201010619659 CN 201010619659 A CN201010619659 A CN 201010619659A CN 102026351 A CN102026351 A CN 102026351A
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downlink
channel
transmission
power
according
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CN 201010619659
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倪立华
牛纲
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大唐移动通信设备有限公司
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Abstract

The embodiment of the invention discloses a method and a device for controlling power of a downlink closed loop in a long-term evolution system and relates to the technical field of wireless communication for increasing the efficiency of controlling the power of a downlink channel. In the invention, a base station confirms a data transmission code rate of the downlink channel according to the downlink channel quality information fed back by a terminal, a power adjusting mode corresponding to the data transmission code rate is confirmed according to a preset relationship between a code ratio scope and the power adjusting mode, and a signal emitting power of the downlink channel is adjusted according to the power adjusting mode. In the invention, the base station is not required to send a power downlink power control parameter to the terminal UE and can adjust the signal emitting power of the downlink channel when the statistic data transmission code ratio of the downlink channel is in the preset code ratio scope, without waiting for the downlink control parameters at two sides of the base station and the UE being effective, therefore greatly increasing the efficiency of controlling the power of the downlink channel.

Description

长期演进系统中的下行闭环功率控制方法和装置技术领域[0001] 本发明涉及无线通信技术领域,尤其涉及一种长期演进系统中的下行闭环功率控制方法和装置。 Downlink closed loop power control method and apparatus in the LTE system Technical Field [0001] The present invention relates to wireless communication technologies, and in particular relates to downlink closed loop power control method and apparatus for the LTE system. 背景技术[0002] 在长期演进(LTE)系统中,单个小区需要占用大量的频谱资源,受频谱资源限制,同频组网势在必行,降低同频干扰的重要性也尤为突出,使用下行闭环功率控制能有效的降低小区间干扰。 [0002] In Long Term Evolution (LTE) system, a single cell would take a lot of spectrum resources, spectrum subject to resource constraints, the same frequency networking is imperative to reduce the importance of co-channel interference is particularly prominent, use the down closed loop power control can effectively reduce inter-cell interference. 同时,通过合理调节向小区内各终端发送信号的功率,能够有效提高系统的吞吐量。 At the same time, by adjusting the power of the transmission signal is reasonable to each terminal in the cell, can effectively improve the system throughput. [0003] 目前LTE系统中基站通过物理下行共享信道(PDSCH)进行信号传输时,按照以下方式确定在资源单元(RE)上传输业务数据所使用的功率:[0004] 首先,基站确定下表1中的半静态功率控制参数的值;[0005] [0003] There is currently an LTE system, the base station signal transmission through a physical downlink shared channel (a PDSCH), determining the power in the resource element (RE) used in the transmission of service data as follows: [0004] First, the base station determines in Table 1 the semi-static power control value of the parameter; [0005]

Figure CN102026351AD00051

[0006][0007] 表1[0008] 其中,P_A通过基站的高层RRC信令进行配置。 [0006] [0007] Table 1 [0008] wherein, P_A configuration of the base station through higher layer RRC signaling. [0009] 对于每个UE,PDSCH与小区专属参考信号(RS)的EPRE之比在包含RS的OFDM符号内的所有RE之间保持相等,并以Pb表示,Pb = EB/Ecrs,其中EbSPDSCH 上承载有导频信号的OFDM内的用于承载业务数据的RE的发射功率;[0010] 对于每个UE,PDSCH与小区专属RS的EPRE之比在不包含小区专属RS的OFDM符号内的所有RE之间保持相等,并以Pa表示,PA = EA/EeRs,其中Ea为PDSCH上未承载有导频信号的OFDM内的用于承载业务数据的RE的发射功率。 [0009] For each UE, PDSCH to the cell specific reference signal (RS) contained in the EPRE ratio remains equal among all RS RE in an OFDM symbol, and expressed as Pb, Pb = EB / Ecrs, wherein the EbSPDSCH RE transmit power for carrying bearer traffic data are within an OFDM pilot signal; [0010] for each UE, the PDSCH and ratio of cell-specific RS EPRE does not contain all of the cell-specific RS RE in an OFDM symbol remain equal between, and in Pa, PA = EA / EeRs, where RE is the transmit power used to carry data traffic in the OFDM Ea specific pilot signal is not carried on the PDSCH. [0011] 然后,在使用4个小区专属天线端口的发送分集预编码模式进行PDSCH传输时,基站按照如下公式计算PA的值:[0012] Pa= δ power_offset+PA+101Ogl0 ⑵[dB];[0013] 在其它发送模式下,基站按照如下公式计算PA的值: _4] Pa= δ—+ΡΑ_]。 [0011] Then, when using the four cell-specific antenna ports transmit diversity precoding mode PDSCH transmission, the base station calculates a value PA according to the following equation: [0012] Pa = δ power_offset + PA + 101Ogl0 ⑵ [dB]; [ 0013] in other transmission mode, the base station calculates the value of PA in accordance with the following formula: _4] Pa = δ- + ΡΑ_]. [0015] 然后,基站根据确定的参数P_B值和天线端口数目P值,查找下表2得到Pb/ PA的值;[0016] [0015] Then, the base station 2 according to the parameter obtained P_B value and the number of antenna ports P values ​​in a lookup table to determine the value of Pb / PA; and [0016]

Figure CN102026351AD00061

[0017]表 2[0018] 然后,基站根据PA以及PB/ PA的值,计算得到PB的值;[0019] 最后,基站根据PA、Ecrs的值、以及公式PA = EA/ECRS,计算得到Ea的值, 即得到PDSCH上未承载有导频信号的OFDM内的用于承载业务数据的RE的发射功率; 根据P B> Ecrs的值、以及公式P Β = EB/Ecrs,计算得到Eb的值,即得到PDSCH上承载有导频信号的OFDM内的用于承载业务数据的RE的发射功率。 [0017] Table 2 [0018] Then, the base station based on the values ​​PA and PB / PA, the calculated value PB; and [0019] Finally, the base station according to the PA, the value Ecrs, and the formula PA = EA / ECRS, calculated Ea value, i.e., to obtain the transmit power for carrying traffic data RE in an OFDM pilot signal has not carried on a PDSCH; the PB> ECRS value, and the formula P Β = EB / Ecrs, the calculated value of Eb, RE to obtain the transmit power for the data bearer service within an OFDM pilot signal carrying the PDSCH. [0020] 同时,基站需要通过广播信道(PBCH)将P值广播给UE、将Ecrs值和P_B值通过MB发送给终端,将P_A值通过RRC信令发送给UE,UE获得这些参数后按照如下与基站相同的方式确定Ea和Eb的值:[0021] 首先,UE在使用4个小区专属天线端口的发送分集预编码模式进行PDSCH传输时,按照如下公式计算Pa的值:[0022] Pa= δ power_offset+PA+101Ogl0 ⑵[dB];[0023] 在其它发送模式下,按照如下公式计算PA的值:[0024] Pa= δ p0wer_0ffset+PA[dB]o[0025] 然后,UE根据接收到的参数P_B值和天线端口数目P值,查上表2得到Pb/ PA的值;[0026] 然后,UE根据PA以及PB/ PA的值,计算得到PB的值;[0027] 最后,UE根据PA、Ecrs的值、以及公式PA = Ea/Ecrs,计算得到Ea的值, 即得到PDSCH上未承载有导频信号的OFDM内的用于承载业务数据的RE的发射功率; 根据PB, ECR8的值、以及公式PB = Eb/Ecrs,计算得到4的值,即得到PDSCH上承载 [0020] Meanwhile, the base station needs over a broadcast channel (PBCH) P-value of the broadcast to the UE, the Ecrs value and P_B values ​​sent by MB to the terminal, the P_A value to the UE through RRC signaling, the UE obtains the parameters as follows determining Ea and Eb values ​​in the same base station mode: [0021] first, the UE in the use of four cell-specific antenna transmission diversity precoding mode port is PDSCH transmission, calculated Pa according to the following formula values: [0022] Pa = δ power_offset + PA + 101Ogl0 ⑵ [dB]; [0023] in another transmission mode, the calculated value PA according to the following equation: [0024] Pa = δ p0wer_0ffset + PA [dB] o [0025] then, the UE according to the received parameter P_B value and the number of antenna ports P values ​​in table 2 to obtain Pb value / PA on the check; [0026] then, the UE based on the values ​​PA and PB / PA, the calculated value PB; and [0027] Finally, the UE according to PA, ECRS value, and the formula PA = Ea / Ecrs, Ea calculated value of transmit power to obtain the RE for carrying data traffic within an OFDM pilot signal has not carried on a PDSCH; the PB, ECR8 of values, and the equation PB = Eb / Ecrs, calculated values ​​of 4, i.e. the carrier on the PDSCH to give 导频信号的OFDM内的用于承载业务数据的RE的发射功率。 RE transmit power for the traffic data carried in the OFDM pilot signals. UE根据得到的Ea和Eb 的值进行PDSCH的解调。 UE demodulates the PDSCH according to the value of Ea and Eb is obtained. [0028] 若基站需要调整PDSCH的发射功率,则可以通过调整P_A的值来实现,并将调整后的P_A的值通过RRC信令发送给UE。 [0028] If the base station needs to adjust the transmit power of the PDSCH, may be achieved by adjusting the value of P_A, P_A and the value after the adjustment to the UE through RRC signaling. [0029] 在实现本发明的过程中,发明人发现现有技术中存在以下技术问题:[0030] 第一,下行功控参数P_A通过RRC信令传输,延时大,无法对信道衰落及时作出反应;[0031] 第二,采用闭环功控模式,需要基站和UE两边参数同时生效,对信令处理时延要求较高;[0032] 第三,现有技术只能通过调节P_A的值来调节PDSCH的发射功率,并且受协议限制,P_A的值的调节范围又是有限的,不能达到最优的功率控制效果。 [0029] During the implementation of the present invention, the inventors found that the following technical problems in the prior art: [0030] First, downlink power control parameter transmitted through P_A RRC signaling, a large delay, fading channel can not timely reaction; [0031] second, closed loop power control mode, the base station parameters and UE sides come into effect, higher processing signaling delay requirements; [0032] third, the prior art can only be adjusted P_A adjust the transmit power of the PDSCH, and by protocol limits the adjustment range of P_A is limited and can not achieve optimum power control effect. 发明内容[0033] 本发明实施例提供一种长期演进系统中的下行闭环功率控制方法和装置,用于提高对下行信道进行功率控制的效率。 SUMMARY OF THE INVENTION [0033] embodiment of the present invention provide a downlink closed loop power control method and apparatus for the LTE system, for improving the efficiency of the downlink channel power control. [0034] 一种长期演进系统中的下行闭环功率控制方法,该方法包括:[0035] 基站根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率;[0036] 基站根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式;[0037] 基站按照所述功率调整方式,调整所述下行信道的信号发射功率。 [0034] The downlink closed loop power control method for a long term evolution system, the method comprising: [0035] The base station according to the downlink channel quality information fed back by the terminal, determines the data transmission rate of the downlink channel; [0036] The base station is set in advance correspondence relationship between the range and rate power adjustment mode, the data transmission rate is determined corresponding to the power adjustment mode; [0037] the base station according to the power adjustment mode, adjusting the transmit power of the downlink channel signal. [0038] 一种长期演进系统中的下行闭环功率控制装置,该装置包括:[0039] 码率统计单元,用于根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率;[0040] 功率调整方式确定单元,用于根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式;[0041 ] 功率调整单元,用于按照所述功率调整方式,调整所述下行信道的信号发射功率。 [0038] a long-term evolution of downlink closed loop power system control apparatus, the apparatus comprising: [0039] rate statistics unit for the downlink channel quality information fed back by the terminal, determines the data transmission rate of the downlink channel; [0040 ] power adjustment mode determination unit according to a correspondence relationship between bit rate and power adjustment mode range set in advance, determines the data transmission rate corresponding to a power adjustment mode; [0041] power adjustment unit, according to the power adjustment mode, adjusting the transmit power of the downlink channel signal. [0042] 本发明中,基站根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率;根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式;按照所述功率调整方式,调整所述下行信道的信号发射功率。 [0042] In the present invention, the base station according to the downlink channel quality information fed back by the terminal, determines the data transmission rate of the downlink channel; a code rate based on the correspondence and the power adjustment range of the preset embodiment, the data transmission determining code ratio corresponding to the power adjustment mode; power adjustment according to the embodiment, adjusting the downlink transmit power of the channel signal. 可见,本发明中,基站不需要向UE传输功率下行功控参数,基站在统计的下行信道的数据传输码率落在预先设定的码率取值范围内时,就对下行信道的信号发射功率进行调整,不需要等到基站和UE两侧的下行功控参数都生效后再进行功率调整,大大提高了对下行信道进行功率控制的效率。 When seen in the present invention, the base station no data transmission rate in the downlink channel statistics rate falls within a predetermined range of the transmission power of the downlink to the UE power control parameters, the base station, to transmit a signal to the downlink channel a power regulator, without waiting for adjusting the power after downlink power control parameters of the base station and the UE side take effect, greatly improving the efficiency of the downlink channel power control. 附图说明[0043] 图1为本发明实施例提供的方法流程示意图;7[0044] 图2A为本发明实施例中的SNR〜码率映射关系曲线示意图;[0045] 图2B为本发明实施例中的PDSCH功率控制原理示意图;[0046] 图3为本发明实施例提供的装置结构示意图。 BRIEF DESCRIPTION [0043] FIG 1 a schematic flowchart of a method according to an embodiment of the present invention; 7 [0044] FIG. 2A is a schematic mapping curve SNR~ rate in the embodiment of the present invention; [0045] Figure 2B embodiment of the present invention PDSCH power control simplified schematic embodiment; [0046] FIG. 3 is a schematic structural diagram of the apparatus embodiment of the present invention. 具体实施方式[0047] 为了提高对下行信道进行功率控制的效率,本发明实施例提供一种长期演进系统中的下行闭环功率控制方法,本方法中,基站根据终端反馈的下行信道质量信息确定下行信道的数据传输码率,并根据数据传输码率确定功率调整方式,然后,按照该功率调整方式调整下行信道的信号发射功率。 DETAILED DESCRIPTION [0047] In order to improve the efficiency of the downlink channel power control, embodiments provide a downlink closed loop power control method for a long term evolution system according to the present invention, the present method, the base station terminal feeds back downlink channel quality information determined according to the downlink channel data transmission rate, and determines the power adjustment manner according to the data transmission rate, and then adjust the transmit power of the downlink channel signal according to the power adjustment mode. [0048] 参见图1,本发明实施例提供的长期演进系统中的下行闭环功率控制方法,具体包括以下步骤:[0049] 步骤10 :基站根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率;[0050] 步骤11:基站根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式;[0051] 步骤12:基站按照所述功率调整方式,调整所述下行信道的信号发射功率。 [0048] Referring to Figure 1, the downlink closed loop power control method for a Long Term Evolution system provided in the embodiment of the present invention, comprises the following steps: [0049] Step 10: The base station according to the downlink channel quality information terminal feeds back the determined downlink data channel transmission rate; [0050] step 11: the base station according to a correspondence relationship between bit rate and the power adjustment range of the preset embodiment, determining the data transmission rate corresponding to a power adjustment mode; [0051] step 12: according to the base station the power adjustment mode, adjusting the transmit power of the downlink channel signal. [0052] 步骤10的具体实现可以如下:[0053] 基站根据终端连续N次反馈的下行信道质量信息,分别确定下行信道的数据传输码率,得到N个数据传输码率,所述N为不小于1的整数。 Embodied [0052] Step 10 may be as follows: [0053] The base station according to the downlink channel quality information feedback terminal N times, respectively, to determine the data transmission rate of the downlink channel, the data transmission rate to obtain N, N is not It is an integer less than 1. 相应的,步骤11中基站在确定所述N个数据传输码率均在预先设定的码率取值范围内时,根据所述对应关系, 确定所述码率取值范围对应的功率调整方式。 Accordingly, the base station in step 11 determines the average transmission rate N data is within a predetermined rate range, according to the correspondence, determining a power adjustment method corresponds to the bit rate range . 具体实现可以如下:[0054] 在所述N个数据传输码率均大于预先设定的高码率门限值Thdmvn时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率下调第一步长值或者,[0055] 在所述N个数据传输码率均小于预先设定的低码率门限值Thup时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率上调第二步长值low ; 或者,[0056] 在所述N个数据传输码率均在低码率门限值Thup与高码率门限值Thdmvn之间时, 根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率上调第三步长值^ up, high。 Particularly as follows: [0054] the N data when the transmission rate greater than a predetermined threshold value high rate Thdmvn, the power adjustment mode is determined according to the corresponding relationship: the signal of the downlink channel when the first steps down the transmit power value or, [0055] the N data transmission rate is less than the low threshold rate Thup preset power adjustment mode is determined according to the corresponding relationship: the Alternatively, when the [0056] Thdmvn N between the data transmission rate and a high average value Thup rate at low code rate threshold gate; signal transmission power of said downlink channels a second step up low value determined according to the correspondence of the power adjustment mode: the downlink channel signal transmit power up a third step values ​​^ up, high. [0057] 上述将所述下行信道的信号发射功率下调第一步长值Admvn,其具体实现可以采用如下两种方式:[0058] 第一种,根据公式lgx*20= Adown,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数X:并将所述下行信道传输的专用导频和专用数据的幅度下调X 倍;[0059] 本方法可以适用于所述下行信道采用长期演进系统中的传输模式7或传输模式8 的情况。 [0057] The channel of the downlink signal transmission power value is lowered a first step Admvn, specific implementation, the following two ways: [0058] first, according to the formula lgx * 20 = Adown, adjusting the determination dedicated pilot downlink channel transmission frequency and the private data of the amplitude of the multiple X: amplitude of the dedicated pilot and the transmission over the downlink channel pilot and dedicated data reduction factor of X; [0059] the present method can be applied to the downlink channel using the long-term transmission mode evolution system 7 or 8 in the case of transmission mode. [0060] 第二种,根据公式lgx*20= Adown,确定调整所述下行信道传输的专用数据的幅度的倍数X :并将所述下行信道传输的专用数据的幅度下调X倍。 [0060] Second, according to the formula lgx * 20 = Adown, determine the adjustment of the amplitude of the downlink dedicated channel data transmitted over the multiple X: amplitude of the downlink dedicated data channel transmission and downregulation X times. [0061] 本方法可以适用于所述下行信道使用公共导频进行信道估计且调制方式为四相相移键控(QPSK)的情况。 [0061] The present method can be applied to the downlink common pilot channel used for channel estimation and the modulation method is quadrature phase shift where keying (QPSK) is. [0062] 上述将所述下行信道的信号发射功率上调第二步长值Aup, low,其具体实现可以采用如下两种方式:[0063] 第一种,根据公式lgx*20= Aup, low,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数X,并将所述下行信道传输的专用导频和专用数据的幅度上调X 倍;[0064] 本方法可以适用于所述下行信道采用长期演进系统中的传输模式7或传输模式8 的情况。 [0062] The channel of the downlink signal transmission power value of a second step up Aup, low, specific implementation can be used in two ways: [0063] first, according to the formula lgx * 20 = Aup, low, adjusting the determined downlink dedicated pilot channel transmission frequency and the amplitude of the multiple private data X, and the downlink dedicated pilot channel transmission and dedicated pilot amplitude data X times upregulated; [0064] the present method can be applied to the downlink channel system using the LTE transmission mode or transmission mode 7 case 8. [0065] 第二种,根据公式lgx*20= Aup, low,确定调整所述下行信道传输的专用数据的幅度的倍数X,并将所述下行信道传输的专用数据的幅度上调X倍。 [0065] Second, according to the formula lgx * 20 = Aup, low, determine the adjustment of the amplitude of the downlink dedicated data channel transmission multiple X, X times and increase the amplitude of the downlink channel transmission of specific data. [0066] 本方法可以适用于所述下行信道使用公共导频进行信道估计且调制方式为四相相移键控(QPSK)的情况。 [0066] The present method can be applied to the downlink common pilot channel used for channel estimation and the modulation method is quadrature phase shift where keying (QPSK) is. [0067] 上述将所述下行信道的信号发射功率上调第三步长值Aup, high,其具体实现可以采用如下两种方式:[0068] 第一种,根据公式lgx*20= Aup, high,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数X ;并将所述下行信道传输的专用导频和专用数据的幅度上调X 倍;[0069] 本方法可以适用于所述下行信道采用长期演进系统中的传输模式7或传输模式8 的情况。 [0067] The channel of the downlink signal transmission power up a third step values ​​Aup, high, specific implementation can be used in two ways: [0068] first, according to the formula lgx * 20 = Aup, high, adjusting the determined downlink dedicated pilot channel transmission frequency and the amplitude of the multiple private data X; and the downlink channel transmission of dedicated pilots and the dedicated pilot amplitude data X times upregulated; [0069] the present method can be applied to the downlink channel system using the LTE transmission mode or transmission mode 7 case 8. [0070] 第二种,根据公式lgx*20= Aup, high,确定调整所述下行信道传输的专用数据的幅度的倍数X ;并将所述下行信道传输的专用数据的幅度上调X倍;[0071] 本方法可以适用于所述下行信道使用公共导频进行信道估计且调制方式为四相相移键控(QPSK)的情况。 [0070] Second, according to the formula lgx * 20 = Aup, high, determine the adjustment of the amplitude of the downlink dedicated channel data transmitted over the multiple X; and the amplitude of the downlink dedicated data channel transmission X-fold upregulated; [ 0071] the present method can be applied to the downlink common pilot channel used for channel estimation and the modulation scheme is quadrature phase shift keying (QPSK) case. [0072] 本方法中,所述Thd_可以为不小于0.8、并且不大于1的数值,优选的,Thdown 的取值为1。 [0072] In the present method, the Thd_ may be not less than 0.8 and not greater than one, preferably, Thdown a value of 1. 当然,Thdmvn还可以是其它任何大于0、不大于1并且大于Thup的数值。 Of course, Thdmvn may also be any other than 0, no greater than 1 and greater than the value of Thup. [0073] 所述Thup可以为不小于0.02、并且不大于0.1的数值,优选的,Thup的取值为0.05。 [0073] The Thup may be no less than 0.02 and not more than the value of 0.1, preferably, 0.05 Thup values. 当然,Thup还可以是其它任何大于0、不大于1并且小于Thdmvn的数值。 Of course, Thup may also be any other than 0, no greater than 1 and less than the value of Thdmvn. [0074] 优选的,所述的取值可以为ldB,当然,Ad。 [0074] Preferably, the value of ldB may, of course, Ad. wn还可以是其它任何不小于0 的数值。 wn it may also be any other value is not less than zero. [0075] 优选的,所述Aup, lmv的取值为ldB,当然,Aup, lmv还可以是其它任何不小于◦、大于Aup, hlgh的数值。 [0075] Preferably, the Aup, lmv the value of ldB, of course, Aup, lmv also may be any other value is not less than ◦, greater than Aup, hlgh of. [0076] 优选的,所述Aup, high的取值为0.5dB,当然,Aup, high还可以是其它任何不小于◦、小于Aup, low的数值。 [0076] Preferably, the Aup, high values ​​is 0.5dB, of course, Aup, high may also be any other ◦ not less than, less than Aup, low value. [0077] 优选的,所述N的取值为4。 [0077] Preferably, the value of N is 4. 当然,N还可以是其它任何不小于1的整数。 Of course, N may also be any other integer not less than 1. [0078] 本发明中,所述下行信道为物理下行共享信道(PDSCH)或物理下行控制信道(PDCCH),当然,也可以其它任何LTE系统中的下行信道。 [0078] In the present invention, the downlink channel is a physical downlink shared channel (PDSCH) or a physical downlink control channel (the PDCCH), of course, be any other downlink channels in the LTE system. [0079] 步骤10的实现方式除了根据终端连续N次反馈的下行信道质量信息,分别确定下行信道的数据传输码率外,还可以采用其它方式,例如在预先设定的采样时间点根据9终端最近一次反馈的下行信道质量信息确定下行信道的数据传输码率,等等。 Implementations [0079] Step 10 in addition to the downlink channel quality information terminal N consecutive feedback, respectively, to determine the data transmission rate of the downlink channel, but may also be used in other ways, for example, the sampling time point set in advance in accordance with 9 terminal last downlink channel quality feedback information for determining the downlink data channel, transmission rate, and the like. 任何根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率的方式,均在本发明的保护范围内。 Any communication terminal according to the downlink channel quality information feedback, to determine how the data transmission rate of the downlink channel, are within the scope of the present invention. [0080] 步骤11中码率取值范围与功率调整方式的对应关系,也不限于上述列出的几种方式,例如,还可以是在统计的数据传输码率大于一个门限值时,将下行信道的信号发射功率下调一个数值,在统计的数据传输码率小于该门限值时,将下行信道的信号发射功率上调一个数值,等等。 [0080] step rate in the range 11 and the corresponding relationship between the power adjustment mode, not limited to the above-listed several ways, for example, data transmission rate may also be larger than a statistical threshold value, the when a downlink channel signal transmission power value of a reduction, statistical data transmission rate is less than the threshold value, the downlink channel signal transmission power value of a regulation, and the like. 任何形式的码率取值范围与功率调整方式的对应关系,其它方式均在本发明的保护范围内。 A correspondence relationship with the code rate in the range of power adjustment mode in any form, other means are within the scope of the present invention. [0081] 下面对本发明进行具体说明:[0082] LTE系统中的传输模式7会使用端口(PORT) 5波束赋形的传输方式,在这种传输方式下,UE使用专用导频作为参考信号用于信道估计,因此只要PDSCH和UE专用导频的幅度是一致的,就可以不遵从RRC配置的P_A和P_B参数,而使用动态的功率配置参数,进行功率调节,以达到兼顾吞吐量和干扰的效果。 [0081] The present invention will be described in detail: [0082] LTE system in transmission mode 7 uses the port (PORT) 5 beamforming transmission mode, in which the transmission mode, the UE uses dedicated pilots as a reference signal channel estimation, so long as the PDSCH and the UE-specific pilot magnitude is the same, it may not comply P_A and P_B parameters RRC configuration, and the use of dynamic power configuration parameters, power regulation, in order to achieve both throughput and interference effect. [0083] 使用PORT5进行PDSCH动态功率控制的方案如下:[0084] 实施本方案前需要预先设定如下表3中的参数:[0085] [0083] PDSCH using PORT5 for dynamic power control protocol is as follows: [0084] embodiment of the present embodiment before the need to pre-set parameters in the following table 3: [0085]

Figure CN102026351AD00101

[0086] 表3[0087] 方案步骤如下:[0088] 步骤1 :基站根据UE连续N次反馈的CQI或其他下行信道质量反馈信息,分别统计PDSCH的数据传输的码率,得到N个数据传输码率,优选滑动窗统计方法,但不限于此方法;[0089] 步骤2 :如果N个数据传输码率均大于等于预定义的门限值Thd。 [0086] Table 3 [0087] Scheme following steps: [0088] Step 1: The base station feedback information according to the UE N consecutive feedback CQI or other downlink channel quality, respectively, the statistical bit rate data transmission of the PDSCH, to obtain N data transmission rate, preferably sliding window statistical methods, but the method is not limited thereto; [0089] step 2: If N is greater than the average data transmission rate equal to a predefined threshold value Thd. wn,对应的平均符号信噪比为图2A中的SNRd。 wn, the symbol corresponding to the average SNR in FIG. 2A SNRd. wn,则表示UE位于图2B中的区域3,吞吐量提升效率(即提高单位功率所能够带来的吞吐量提升量)不高,考虑下调功率一个步长Admra(CiB);[0090] 步骤3:如果N个数据传输码率均低于预定义的门限值Thup,对应的平均符号信噪比为图2A中的SNRup,则表示UE位于图2B中的区域1,吞吐量提升效率不高,但是考虑到UE可能需要保证最小数据速率,则考虑上调功率一个步长l0W(dB),该步长的配置需要兼顾考虑吞吐量提升效率,以及当前子帧内的业务配置情况;如果子帧内配置的UE数较多且该UE占用资源比例小,则设置步长较大;如果子帧内配置的UE数较少且该UE占用资源比例大,则设置步长较小;[0091] 步骤4:如果N个数据传输码率均介于预定义门限(Thup,ThdmJ之间,则表示UE位于图2B中的区域2,吞吐量提升效率相对较高;则考虑上调功率一个步长Aup, high (dB)。[0092] 上述步骤2-步 Wn of, said UE is located in the region of 3 2B, the throughput improve efficiency (i.e., increase the throughput per unit power can bring the lift amount) is not high, considering the power down by one step Admra (CiB); [0090] Step 3: If all the N data transmission rate is below a predefined threshold Thup, the symbol corresponding to the average SNR in FIG. 2A SNRup, it indicates that the UE is located in an area 2B, the throughput does not improve efficiency high, but considering that the UE might need to guarantee a minimum data rate, is considered a step up power l0W (dB), the configuration step requires a certain increase efficiency considerations into account, the current service and the subframe configuration; if the sub UE frame number and configuration of the UE more small footprint ratio, the larger the setting step; if the number of UE and the subframe configuration of a large proportion of the UE is less resource-intensive, is set smaller step; [0091 ] step 4: If all the N data transmission rate between a predefined threshold (Thup, between ThdmJ, the UE located in a region represented in FIG. 2B 2, to enhance the throughput efficiency is relatively high; consider a step up power Aup, high (dB). [0092] step 2 above step 4中可以通过同时增大或者同时减小专用导频和专用数据相对于小区公共导频的幅度方式,来调整PDSCH的功率。[0093] 方案分析:[0094] 根据UE距离基站的远近,将小区分为三个部分,如图2B所示;方案基于适当降低小区中心区域(即区域3)的UE的发射功率,提高外围UE功率,进而提高外围UE 的数据速率的思想,从吞吐量提升效率出发,更注重提高区域2的UE的发送功率;将有限的功率资源使用到更能够提升系统吞吐量的地方,对于吞吐量提升效率不高却可能需要保证UE最小数据速率的区域1,,则可以根据情况适当提升功率或者降低功率;这样,可以提升系统资源效率,降低小区间的干扰;[0095] 方案参数考虑:[0096] 码率门限Thdmvi^P Thup,可以根据仿真得到的如图2A所示的SNR〜码率映射关系曲线确定,具体的,确定曲线的拐点,将第一个拐点(即SNRup)对应的码率 4 may be increased or reduced simultaneously dedicated pilots and the data specific manner with respect to the amplitude of the common pilot cell, to adjust the power of the PDSCH by simultaneously [0093] Scheme Analysis: [0094] The UE distance from the base station, the cell is divided into three parts, as shown in FIG. 2B; schemes based on the transmit power of the cell center region due to lower (i.e., region 3) of the UE, the UE power increase periphery, thereby improving the data rate of the peripheral thought UE enhance throughput from efficiency, it is more emphasis on the region to increase the transmission power of the UE 2; the limited power resources to be used to place more can improve system throughput, to improve the throughput efficiency is not high but might need to guarantee a minimum data rate of the UE 1 ,, region the situation may be appropriate to enhance or reduce power power; Thus, system resources can improve efficiency and reduce inter-cell interference; [0095] consider the scenario parameters: [0096] rate threshold Thdmvi ^ P Thup, the simulation can be obtained according to FIG. SNR~ rate curve mapping shown in FIG. 2A determination, particularly, the inflection point of the curve is determined, the first inflection point (i.e. SNRup) corresponding to the bit rate 确定为Thup,将第一个拐点(即SNRdmJ对应的码率确定为Thd_。[0097] 如果希望小区内的某些UE能够达到峰值速率,则这些UE的功率下调步长Ad。wn 可以设置为0,否则,功率下调步长Ad。wn不为0;[0098] 此方法同样适合于传输模式8下的PORT7或者PORT8的单流传输。[0099] 对于使用公共导频进行信道估计且调制方式为QPSK时,由于QPSK解调只和星座点所处象限有关,和在象限内的相对位置无关,所以本发明介绍的功率控制方法同样适用于使用公共导频进行信道估计且调制方式为QPSK的PDSCH传输,功率调整方法为增大或者减小专用数据相对于小区公共导频的幅度方式调整PDSCH功率。 Determined Thup, the first inflection point (i.e., corresponding to the rate determined SNRdmJ Thd _. [0097] If desired some of the UE within the cell peak rate can be achieved, then the power down step Ad.wn UE may set these 0, otherwise, the power down step Ad.wn is not 0;. [0098] this method is also suitable for single-stream transmission PORT8 PORT7 or 8, the transmission mode [0099] using the common pilot for channel estimation and the modulation scheme is QPSK, since only the QPSK demodulation constellation points and quadrants in which the relevant, and relative position within a quadrant irrelevant, the power control method of the present invention described is equally applicable to the use of the common pilot for channel estimation and the modulation scheme is QPSK PDSCH transmission power adjustment method of increasing or decreasing the amplitude of the specific data with respect to the embodiment of the common pilot cell PDSCH power adjustment. [0100] 参见图3,本发明实施例还提供一种长期演进系统中的下行闭环功率控制装置, 该装置包括:[0101] 码率统计单元30,用于根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率;[0102] 功率调整方式确定单元31,用于根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式;[0103] 功率调整单元32,用于按照所述功率调整方式,调整所述下行信道的信号发射功率。 [0100] Referring to Figure 3, an embodiment of the present invention further provides a long-term evolution of downlink closed loop power system control apparatus, the apparatus comprising: [0101] rate statistic unit 30, a terminal feeds back downlink channel information based on the channel quality, determining a data transmission rate of the downlink channel; [0102] power adjustment mode determination unit 31, a correspondence relationship between the range and the code rate according to a power adjustment mode set in advance, determines the data transmission rate corresponding to the power adjustment embodiment; [0103] power adjusting unit 32, according to the power adjustment mode for adjusting the transmit power of the downlink channel signal. [0104] 所述码率统计单元30用于:[0105] 根据终端连续N次反馈的下行信道质量信息,分别确定下行信道的数据传输码率,得到N个数据传输码率,所述N为不小于1的整数;[0106] 所述功率调整方式确定单元31用于:[0107] 确定所述N个数据传输码率均在预先设定的码率取值范围内时,根据所述对应关系,确定所述码率取值范围对应的功率调整方式。 [0104] The counting unit 30 for rate: [0105] The downlink channel quality information feedback terminal N times, respectively, to determine the data transmission rate of the downlink channel, the data transmission rate to obtain N, N is integer not less than 1; and [0106] the power adjusting unit 31 for determining a manner: when the average bit rate within a predetermined range [0107] to determine the N data transmission rate, according to the corresponding relationship, determining the code rate power adjustment range corresponding manner. [0108] 所述功率调整方式确定单元31用于:[0109] 在所述N个数据传输码率均大于预先设定的高码率门限值Thdmvn时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率下调第一步长值或者,[0110] 在所述N个数据传输码率均小于预先设定的低码率门限值Thup时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率上调第二步长值low ; 或者,[0111] 在所述N个数据传输码率均在低码率门限值Thup与高码率门限值Thdmvn之间时, 根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率上调第三步长值^ up, high。 [0108] The power adjusting unit 31 for determining manner: [0109] the N data when the transmission rate greater than a predetermined threshold value high rate Thdmvn, determined according to the corresponding relationship between the power adjustment mode as: the downlink channel signal transmit power value or a first step down, [0110] the N data when the transmission rate is less than a predetermined lower threshold rate Thup, according to the corresponding determining a power adjustment mode to the relationship: the downlink channel signal transmission power value increase low second step; or [0111] the N data transmission rate and a high average value Thup low bit rate code door when the ratio between Thdmvn threshold, the power adjustment mode is determined according to the correspondence: the downlink channel signal transmit power up a third step values ​​^ up, high. [0112] 所述功率调整单元32用于:[0113] 在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx*20= Adown,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数χ:并将所述下行信道传输的专用导频和专用数据的幅度下调χ倍;或者,[0114] 在所述下行信道使用公共导频进行信道估计且调制方式为四相相移键控QPSK 时,根据公式lgx*20= Adown,确定调整所述下行信道传输的专用数据的幅度的倍数χ: 并将所述下行信道传输的专用数据的幅度下调χ倍。 [0112] The power adjusting unit 32 is configured to: [0113] 7 in the downlink channel of the LTE system adopts a transmission mode or a transmission mode 8, according to the formula lgx * 20 = Adown, determining an adjustment to the downlink channel transmission dedicated pilot and dedicated data amplitude multiples χ: amplitude dedicated pilot and the downlink channel transmission of pilot and dedicated data reduction [chi] times; Alternatively, channel estimation [0114] a common pilot on the downlink channel and the modulation scheme is quadrature phase shift keying QPSK, according to the formula lgx * 20 = Adown, determine the adjustment of the amplitude χ multiple downlink dedicated data channel transmission: the amplitude of the downlink dedicated data channel transmission and downregulation χ times. [0115] 所述功率调整单元32用于:[0116] 在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx^20 = Aup, low,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数x,并将所述下行信道传输的专用导频和专用数据的幅度上调χ倍;或者,[0117] 在所述下行信道使用公共导频进行信道估计且调制方式为QPSK时,根据公式lgx^20= Aup, low,确定调整所述下行信道传输的专用数据的幅度的倍数x,并将所述下行信道传输的专用数据的幅度上调χ倍。 [0115] The power adjusting unit 32 is configured to: [0116] 7 in the downlink channel of the LTE system adopts a transmission mode or a transmission mode 8, according to the formula lgx ^ 20 = Aup, low, determines said downlink adjustment dedicated pilot channel transmission frequency and the private data of the amplitude of a multiple x, the amplitude of dedicated pilot and the downlink channel transmission of pilot and dedicated data upregulated χ times; or [0117] using the common pilot on the downlink channel frequency for channel estimation and the modulation scheme is QPSK, according to the formula lgx ^ 20 = Aup, low, determine the adjustment of the downlink amplitude of the dedicated data channel transmission multiples of x, and the amplitude of the downlink channel transmission of specific data upregulated χ times . [0118] 所述功率调整单元32用于:[0119] 在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx*20= Aup, high,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数χ; 并将所述下行信道传输的专用导频和专用数据的幅度上调χ倍;或者,[0120] 在所述下行信道使用公共导频进行信道估计且调制方式为QPSK时,根据公式lgx*20= Aup, high,确定调整所述下行信道传输的专用数据的幅度的倍数χ;并将所述下行信道传输的专用数据的幅度上调χ倍。 [0118] The power adjusting unit 32 is configured to: [0119] 7 in the downlink channel of the LTE system adopts a transmission mode or a transmission mode 8, according to the formula lgx * 20 = Aup, high, adjusting the determined downlink multiple dedicated pilot channel transmission frequency and the private data of the amplitude of the [chi]; amplitude dedicated pilot and the downlink channel transmission of pilot and dedicated data upregulation of [chi] times; or [0120] using the common pilot on the downlink channel channel estimation and the modulation scheme is QPSK, according to the formula lgx * 20 = Aup, high, determining an adjustment to the downlink multiple χ amplitude of the dedicated data channel transmission; and the amplitude of the downlink channel transmission of specific data upregulated χ times . [0121] 所述Thdmvn不小于0.8、并且不大于1。 The [0121] Thdmvn not less than 0.8 and not more than 1. 所述Thup不小于0.02、并且不大于0.1。 The Thup not less than 0.02 and not more than 0.1. 所述Δ-η的取值为ldB。 The values ​​of Δ-η ldB. 所述Aup, low的取值为ldB。 The Aup, low values ​​for the ldB. 所述Aup, high的取值为0.5dB。 The Aup, high values ​​is 0.5dB. 所述N为4。 N is 4. 所述下行信道为PDSCH或PDCCH。 The channel is a downlink PDSCH or PDCCH. [0122] 本发明实施例提供的长期演进系统中的下行闭环功率控制装置,具体可以是基站等能够与UE通信的网络侧设备。 Downlink closed loop power LTE system according to an embodiment of the present invention [0122] The present control apparatus, particularly the network side device may be capable of communicating with the base station, etc. UE. [0123] 综上,本发明的有益效果包括:[0124] 本发明实施例提供的方案中,基站根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率;根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式;按照所述功率调整方式,调整所述下行信道的信号发射功率。 The [0123] Fully, the beneficial effects of the invention comprises: [0124] solutions provided by the embodiments of the present invention, the base station according to the downlink channel quality information terminal feeds back the determined data transmission rate downlink channel; according to the code set in advance and a correspondence relationship in the range of power adjustment mode, the data transmission rate is determined corresponding to the power adjustment manner; according to the power adjustment mode, adjusting the transmit power of the downlink channel signal. [0125] 可见,本发明中,基站不需要向UE传输功率下行功控参数,基站在统计的下行信道的数据传输码率落在预先设定的码率取值范围内时,就对下行信道的信号发射功率进行调整,不需要等到基站和UE两侧的下行功控参数都生效后再进行功率调整,大大提高了对下行信道进行功率控制的效率。 When the [0125] visible, in the present invention, the base station does not need to fall within a predetermined range rate to the UE transmit power of the downlink power control parameter, the data transmission rate in the base station of the downlink channel statistics, to the downlink channel adjusting signal transmit power, then the power adjustment need not wait until the downlink power control parameters of the base station and the UE side take effect, greatly improving the efficiency of the downlink channel power control. 同时,基站可以根据预先设定的功率调整方式对下行信道进行功率调整,调整范围不受协议限制,能够提高功率控制的效果。 Meanwhile, the base station may be adjusted according to the power mode for a predetermined downlink channel power adjustment, the adjustment range regardless of protocol, the effect of the power control can be improved. [0126] 并且,相比于现有通过RRC信令传输功控参数方式,本发明的功率控制方法延时较小,对信道衰落的适应性更强。 [0126] Further, as compared to the conventional transmission power control by RRC signaling parameters embodiment, the power control method of the present invention, a small delay, fading channel adaptable. [0127] 采用本发明的较快速的下行闭环功率控制方法,能够充分利用小区功率,提升系统资源效率,并且对小区边缘UE进行最大功率控制,降低同频小区间的干扰。 [0127] The present invention is more rapid downlink closed loop power control method, to take advantage of the power cells, to enhance the efficiency of system resources, and a cell edge UE of the maximum power control, to reduce interference between intra-frequency cells. [0128] 本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。 [0128] The present invention has been described in accordance with the method of Example of the present invention, apparatus (systems) and computer program products flowchart and / or block diagrams described. 应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。 It should be understood and implemented by computer program instructions and block, and the flowchart / or block diagrams each process and / or flowchart illustrations and / or block diagrams of processes and / or blocks. 可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。 These computer program instructions may be provided to a processor a general purpose computer, special purpose computer, embedded processor or other programmable data processing apparatus to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing apparatus generating in a device for implementing the flow chart or more flows and / or block diagram block or blocks in a specified functions. [0129] 这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。 [0129] These computer program instructions may also be stored in a computer can direct a computer or other programmable data processing apparatus to function in a particular manner readable memory produce an article of manufacture such that the storage instruction means comprises a memory in the computer-readable instructions the instruction means implemented in a flowchart or more flows and / or block diagram block or blocks in a specified function. [0130] 这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。 [0130] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps on the computer or other programmable apparatus to produce a computer implemented so that the computer or other programmable apparatus execute instructions to provide processes for implementing a process or flows and / or block diagram block or blocks a function specified step. [0131] 尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。 [0131] While the present invention has been described with preferred embodiments, but those skilled in the art from the underlying inventive concept can make other modifications and variations to these embodiments. 所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。 Therefore, the appended claims are intended to explain embodiments including the preferred embodiment as fall within the scope of the invention and all changes and modifications. [0132] 显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。 [0132] Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. 这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。 Thus, if these modifications and variations of the present invention fall within the claims of the invention and the scope of equivalents thereof, the present invention intends to include these modifications and variations.

Claims (13)

  1. 1. 一种长期演进系统中的下行闭环功率控制方法,其特征在于,该方法包括: 基站根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率;基站根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式;基站按照所述功率调整方式,调整所述下行信道的信号发射功率。 Downlink closed loop power control method for a long term evolution system, characterized in that, the method comprising: a base station according to the downlink channel quality information fed back by the terminal, determines a data transmission rate of the downlink channel; a base station according to the rate set in advance range corresponding relationship with the power adjustment mode, the data transmission rate is determined corresponding to the power adjustment manner; base station according to the power adjustment mode, adjusting the transmit power of the downlink channel signal.
  2. 2.如权利要求1所述的方法,其特征在于,所述基站根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率包括:基站根据终端连续N次反馈的下行信道质量信息,分别确定下行信道的数据传输码率,得到N个数据传输码率,所述N为不小于1的整数;所述基站根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式包括:确定所述N个数据传输码率均在预先设定的码率取值范围内时,根据所述对应关系,确定所述码率取值范围对应的功率调整方式。 2. The method according to claim 1, characterized in that the base station according to the downlink channel quality information fed back by the terminal, determines the data transmission rate of a downlink channel comprises: a base station information terminal according to the downlink channel N times the channel quality feedback, respectively determined data transmission rate of the downlink channel, the data transmission rate to obtain N, N is an integer not less than 1; and the corresponding relationship between the base station and the code rate according to a power adjustment mode range set in advance, to determine the data transmission rate corresponding to the power adjustment method comprising: determining a data transmission rate of the N were within the range previously set bit rate, according to the correspondence, the bit rate is determined in the range corresponding power adjustment mode.
  3. 3.如权利要求2所述的方法,其特征在于,所述确定所述N个数据传输码率均在预先设定的码率取值范围内时,根据所述对应关系,确定所述码率取值范围对应的功率调整方式包括:在所述N个数据传输码率均大于预先设定的高码率门限值Thdmvn时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率下调第一步长值或者,在所述N个数据传输码率均小于预先设定的低码率门限值Thup时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率上调第二步长值low ;或者,在所述N个数据传输码率均在低码率门限值Thup与高码率门限值Thdmvn之间时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率上调第三步长值^ up,high ° 3. The method according to claim 2, wherein the determining the value range of the bit rate N data transmission rate are set in advance, according to the correspondence, determining the code ratio in the range corresponding to the power adjustment method comprising: in said N data transmission rate greater than a predetermined high rate limit value door Thdmvn, the power adjustment mode is determined according to the corresponding relationship: the downlink when channel signal transmission power value is lowered or a first step, the N data transmission rate is less than the threshold value Thup low rate preset corresponding relationship is determined according to the power adjustment way: the said signal transmission power of the downlink channel up low second step size value; or, when the data transmission rate of N are in the low bit rate and high bit-rate threshold between the door Thup Thdmvn value, according to the determining a power adjustment mode corresponding relationship is: the downlink channel signal transmit power up a third step values ​​^ up, high °
  4. 4.如权利要求3所述的方法,其特征在于,所述将所述下行信道的信号发射功率下调第一步长值Ad。 4. The method according to claim 3, characterized in that the said downlink channel signal transmit power down the first step size value Ad. wn包括:在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx*20 =Δdown,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数χ :并将所述下行信道传输的专用导频和专用数据的幅度下调X倍;或者,在所述下行信道使用公共导频进行信道估计且调制方式为四相相移键控QPSK时, 根据公式lgx*20= Adown,确定调整所述下行信道传输的专用数据的幅度的倍数χ:并将所述下行信道传输的专用数据的幅度下调χ倍。 wn comprising: a channel using the transmission mode LTE system 7 or transmission mode in the downlink 8, according to the formula lgx * 20 = Δdown, determining an adjustment to the downlink channel transmission of dedicated pilots and the private data of the amplitude of multiple χ : the amplitude of the downlink dedicated pilot and the pilot channel transmission and dedicated data reduction factor of X; or when used in the downlink common pilot channel for channel estimation and the modulation scheme is quadrature phase shift keying QPSK, according to the formula lgx * 20 = Adown, determine the adjustment of the amplitude χ multiple downlink dedicated data channel transmission: the amplitude of the downlink dedicated data channel transmission and downregulation χ times.
  5. 5.如权利要求3所述的方法,其特征在于,所述将所述下行信道的信号发射功率上调第二步长值Aup, lmv包括:在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx*20 =Aup, low,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数x,并将所述下行信道传输的专用导频和专用数据的幅度上调X倍;或者,在所述下行信道使用公共导频进行信道估计且调制方式为QPSK时,根据公式lgx*20 =Aup, low,确定调整所述下行信道传输的专用数据的幅度的倍数x,并将所述下行信道传输的专用数据的幅度上调X倍。 5. The method according to claim 3, characterized in that the signal transmission power of the downlink channel upregulation second step size value Aup, lmv comprising: a long term evolution system using a transmission mode in the downlink channel 7 or 8 transmission mode, according to the formula lgx * 20 = Aup, low, adjusting the determined downlink dedicated pilot channel transmission frequency and the amplitude of the multiple private data x, and the downlink dedicated pilot channel transmission and dedicated pilot amplitude data upregulated X times; Alternatively, the common pilot for channel estimation and the modulation scheme is QPSK, according to the formula lgx * 20 = Aup, low, determining adjustments dedicated data channel transmission of the downlink in the downlink channel multiples of x, and the amplitude of the downlink dedicated data channel transmission upregulated X times.
  6. 6.如权利要求3所述的方法,其特征在于,所述将所述下行信道的信号发射功率上调第三步长值Aup, hlgh包括:在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx*20 =Aup, high,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数χ;并将所述下行信道传输的专用导频和专用数据的幅度上调X倍;或者,在所述下行信道使用公共导频进行信道估计且调制方式为QPSK时,根据公式lgx*20 =Aup, high,确定调整所述下行信道传输的专用数据的幅度的倍数χ;并将所述下行信道传输的专用数据的幅度上调X倍。 6. The method according to claim 3, characterized in that the said downlink channel signal transmit power up a third step values ​​Aup, hlgh comprising: a long term evolution system using a transmission mode in the downlink channel 7 or 8 transmission mode, according to the formula lgx * 20 = Aup, high, determine the adjustment of the multiple downlink dedicated pilot channel transmission frequency and the amplitude of the private data [chi]; and dedicated pilot frequency and the downlink dedicated channel transmission amplitude or using a common pilot for channel estimation and the modulation scheme is QPSK, according to the formula lgx * 20 = Aup, high, determining an adjustment to the downlink channel transmission in the downlink channel specific data; amplitude data upregulated X times multiple [chi]; and the amplitude of the specific data transmitted over the downlink channel X-fold increase.
  7. 7.如权利要求3-6中任一所述的方法,其特征在于,所述Thdmvn不小于0.8、并且不大于1 ;或者,所述Thup不小于0.02、并且不大于0.1;或者, 所述取值为IdB;或者, 所述〜,ΐο„的取值为IdB ;或者, 所述〜,Mgh的取值为0.5dB ;或者, 所述N为4;或者,所述下行信道为物理下行共享信道PDSCH或物理下行控制信道PDCCH。 7. A method as claimed in any one of claims 3-6, wherein said Thdmvn not less than 0.8 and not more than 1; or the Thup not less than 0.02 and not more than 0.1; or the value is IdB; or the ~, ΐο "the value of IdB; or the ~, Mgh the value of 0.5dB; or N is 4; or the downlink channel is a physical downlink shared channel (PDSCH) or a physical downlink control channel PDCCH.
  8. 8.—种长期演进系统中的下行闭环功率控制装置,其特征在于,该装置包括:码率统计单元,用于根据终端反馈的下行信道质量信息,确定下行信道的数据传输码率;功率调整方式确定单元,用于根据预先设定的码率取值范围与功率调整方式的对应关系,确定所述数据传输码率对应的功率调整方式;功率调整单元,用于按照所述功率调整方式,调整所述下行信道的信号发射功率。 8.- species downlink closed loop power control system of the LTE device, wherein, the apparatus comprising: a rate statistics unit for the downlink channel quality information fed back by the terminal, determines the data transmission rate of the downlink channel; power adjustment mode determination unit according to a correspondence relationship between bit rate and power adjustment mode range set in advance, determines the data transmission rate corresponding to a power adjustment mode; power adjustment unit, according to the power adjustment mode, adjusting the downlink transmit power of the channel signal.
  9. 9.如权利要求8所述的装置,其特征在于,所述码率统计单元用于:根据终端连续N次反馈的下行信道质量信息,分别确定下行信道的数据传输码率, 得到N个数据传输码率,所述N为不小于1的整数; 所述功率调整方式确定单元用于:确定所述N个数据传输码率均在预先设定的码率取值范围内时,根据所述对应关系,确定所述码率取值范围对应的功率调整方式。 9. The apparatus according to claim 8, wherein said means for rate statistics: the downlink channel quality information feedback terminal N times, respectively, to determine the data transmission rate of the downlink channel to obtain N data transmission rate, wherein N is an integer not less than 1; and adjusting the power mode determination unit configured to: when determining the average transmission rate N data bit rate within a predetermined range, according to the correspondence relationship, determining the code rate power adjustment range corresponding manner.
  10. 10.如权利要求9所述的装置,其特征在于,所述功率调整方式确定单元用于: 在所述N个数据传输码率均大于预先设定的高码率门限值Thdmvn时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率下调第一步长值或者,在所述N个数据传输码率均小于预先设定的低码率门限值Thup时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率上调第二步长值low ;或者,在所述N个数据传输码率均在低码率门限值Thup与高码率门限值Thdmvn之间时,根据所述对应关系确定功率调整方式为:将所述下行信道的信号发射功率上调第三步长值^ up,high ° 10. The apparatus according to claim 9, wherein the power adjustment mode determining unit configured to: when the N data transmission rate greater than a predetermined high rate limit door Thdmvn, according determining the correspondence of the power adjustment mode: the signal transmission power of the downlink channel, the first step size value or lowered, the N data when the transmission rate is less than a predetermined lower threshold rate Thup , determined according to the correspondence of the power adjustment mode: the signal transmission power of the downlink channel upregulation second step size value low; or the N data transfer rate are at low code rate threshold and Thup between the high rate threshold Thdmvn, determined according to the correspondence of the power adjustment mode: the downlink channel signal transmit power up a third step values ​​^ up, high °
  11. 11.如权利要求10所述的装置,其特征在于,所述功率调整单元用于:在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx*20 =Δdown,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数χ :并将所述下行信道传输的专用导频和专用数据的幅度下调X倍;或者,在所述下行信道使用公共导频进行信道估计且调制方式为四相相移键控QPSK时, 根据公式lgx*20= Adown,确定调整所述下行信道传输的专用数据的幅度的倍数χ:并将所述下行信道传输的专用数据的幅度下调χ倍。 11. The apparatus according to claim 10, wherein the power adjusting unit configured to: use the LTE system in transmission mode in the downlink channel transmission mode 7 or 8, according to the formula lgx * 20 = Δdown determining the adjusted downlink channel transmission of dedicated pilots and dedicated data amplitude multiples χ: the amplitude of the downlink dedicated pilot and the pilot channel transmission and dedicated data reduction factor of X; or, in the downlink public channel a pilot channel estimation and the modulation scheme is quadrature phase shift keying QPSK, according to the formula lgx * 20 = Adown, determine the adjustment of the amplitude χ multiple downlink dedicated data transmitted through the channel: and the downlink channel transmission downregulation of specific data amplitude χ times.
  12. 12.如权利要求10所述的装置,其特征在于,所述功率调整单元用于:在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx*20 =Aup, low,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数x,并将所述下行信道传输的专用导频和专用数据的幅度上调X倍;或者,在所述下行信道使用公共导频进行信道估计且调制方式为QPSK时,根据公式lgx*20 =Aup, low,确定调整所述下行信道传输的专用数据的幅度的倍数x,并将所述下行信道传输的专用数据的幅度上调X倍。 12. The apparatus according to claim 10, wherein the power adjusting unit configured to: use the LTE system in transmission mode in the downlink channel transmission mode 7 or 8, according to the formula lgx * 20 = Aup , low, determining an adjustment to the downlink channel transmission and dedicated pilot amplitude of a multiple private data x, and the amplitude of the downlink dedicated pilot channel and dedicated data transmission frequency upregulated X times; or, in the downlink channel use the common pilot for channel estimation and the modulation scheme is QPSK, according to the formula lgx * 20 = Aup, low, determine the adjustment of the downlink amplitude of the dedicated data channel transmission multiples of x, and the dedicated downlink data channel transmission X times the amplitude increases.
  13. 13.如权利要求10所述的装置,其特征在于,所述功率调整单元用于:按照如下方式将所述下行信道的信号发射功率上调第三步长值hlgh:在所述下行信道采用长期演进系统中的传输模式7或传输模式8时,根据公式lgx*20 =Aup, high,确定调整所述下行信道传输的专用导频和专用数据的幅度的倍数χ;并将所述下行信道传输的专用导频和专用数据的幅度上调X倍;或者,在所述下行信道使用公共导频进行信道估计且调制方式为QPSK时,根据公式lgx*20 =Aup, high,确定调整所述下行信道传输的专用数据的幅度的倍数χ;并将所述下行信道传输的专用数据的幅度上调X倍。 13. The apparatus according to claim 10, wherein the power adjusting unit configured to: signal follows the transmit power of the downlink channel upregulation third step value HlGH: long-term use in the downlink channel transmission mode evolution system 7 or 8 transmission mode, according to the formula lgx * 20 = Aup, high, determine the adjustment of the multiple downlink dedicated pilot channel transmission frequency and the amplitude of the private data [chi]; and the downlink channel transmission amplitude of dedicated pilots and dedicated data upregulated X times; or when using a common pilot for channel estimation and QPSK modulation in the downlink channel, according to the formula lgx * 20 = Aup, high, determining an adjustment to the downlink channel multiple dedicated transmission amplitude data [chi]; and the amplitude of the downlink dedicated data channel transmission upregulated X times.
CN 201010619659 2010-12-31 2010-12-31 Method and device for controlling power of downlink closed loop in long-term evolution system CN102026351A (en)

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