CN102026350B - Method and terminal for power regulation - Google Patents

Abstract

The invention discloses a power adjustment method and a terminal. The method includes: in each of the two code channels corresponding to the two coded combination transmission channels CCTrCH, according to the power reference value, weighting factor and gain factor, in the digital Power regulation in baseband and power compensation in RF and analog baseband. Through the present invention, the power adjustment is realized accurately and efficiently under the condition that two CCTrCHs are mapped to two physical channels.

Description

Method and terminal that power is adjusted

Technical field

The present invention relates to the communications field, method and the terminal in particular to a kind of power, adjusted.

Background technology

Along with social development and scientific and technical progress, mobile communication system can provide the Interactive multimedia services that speech, image and data etc. are combined to become a trend of development in science and technology as fixed network.Therefore, Wideband Code Division Multiple Access (WCDMA) access (Wideband Code Division MultipleAccess as 3G (Third Generation) Moblie three large mainstream standard, referred to as WCDMA), code division multiple access access (Code Division MultipleAccess, referred to as CDMA) 2000 and TD SDMA access (TimeDivision Synchronous Code Division Multiple Access, referred to as TD-SCDMA) all carrying out technology enhancing, to adapt to mobile multi-media service in the requirements at the higher level aspect data rate and class of business.

Development and evolution along with TD-SCDMA system, terminal equipment not only needs to support conventional voice service and compared with the data service of low rate, and need to provide for high speed downlink packet access (High Speed Downlink Packet Access, referred to as HSDPA) and the support of high speed uplink packet access (High Speed Uplink Packet Access, referred to as HSUPA) function.Related protocol regulation, when sending, up link supports at most two code channels, the physical channel relating to comprises: uplink physical channel (Up PhysicsChannel, referred to as UpPCH), Physical Random Access Channel (Physical RandomAccess Channel, referred to as PRACH), DPCH (Dedicated PhysicalChannel, referred to as DPCH), at a high speed-shared indicating channel (High Speed SharedIndication Channel, referred to as HS-SICH), E-RUCCH and enhancing-physical uplink channel (Enhanced Physical Uplink Channel, referred to as E-PUCH).The Major Difficulties problem that correlation technique need to solve is: when up link sends two code channels and this two code channels correspond respectively to two different coded combination transmission channels (Coded CompositeTransport Channel, referred to as CCTrCH) time, how the power adjusting factor of data field and intermediate code should be calculated.

At third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) in English agreement TS25.223, when only having provided single CCTrCH and being mapped as two physical channels, the computational methods of the power adjusting factor of each code channel; And for two CCTrCH, be mapped as the situation of two physical channels, in English agreement and Chinese edition industry standard and existing patent documentation, all do not provide detailed implementation.

Summary of the invention

For being difficult to when two CCTrCH are mapped as two physical channels to adjust by rated output the problem that the factor realizes power adjustment in correlation technique, the present invention is proposed, for this reason, the scheme that provides a kind of power to adjust is provided main purpose of the present invention, to address the above problem.

To achieve these goals, according to an aspect of the present invention, a kind of method that provides power to adjust.

According to the method for power adjustment of the present invention, comprise: in each code channel of two code channels corresponding to two CCTrCH, according to power reference value, weighted factor and gain factor, in digital baseband, carry out power adjustment, and in radio frequency and Analog Baseband, carry out power back-off.Preferably, in digital baseband, carrying out power adjustment comprises: according to $\frac{{\mathrm{DataScale}}_1}{{\mathrm{DataScale}}_2}=\frac{{\mathrm{\ϵ}}_1}{{\mathrm{\ϵ}}_2}$ And DataScale ₁+ DataScale ₁=1, calculate respectively two data field part amplitudes corresponding to CCTrCH and adjust factor D ataScale ₁and DataScale ₂, wherein, ${\mathrm{\ϵ}}_1=\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}=\sqrt{\frac{P_1\·{\mathrm{\β}}_{1,j}^2}{{\mathrm{SF}}_1}},$ ${\mathrm{\ϵ}}_2=\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}=\sqrt{\frac{P_2\·{\mathrm{\β}}_{2,m}^2}{{\mathrm{SF}}_2}},$ P ₁and P ₂be respectively the linear value of the transmitted power fiducial value of two CCTrCH, SF ₁and SF ₂be respectively the spreading ratio that two CCTrCH are used, β _{1, j}be a gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH, β _{2, m}be that another in two CCTrCH adopts the gain factor of m TFC in corresponding TFCS, γ ₁and γ ₂be respectively the weighted factor of two CCTrCH; According to DataScale ₁and DataScale ₂in digital baseband, two data fields corresponding to CCTrCH are partly carried out to power adjustment.

Preferably, calculating DataScale ₁and DataScale ₂afterwards, according to DataScale ₁and DataScale ₂calculate two intermediate code part amplitudes corresponding to CCTrCH and adjust factor M idambleScale ₁and MidambleScale ₂; According to MidambleScale ₁and MidambleScale ₂in digital baseband, two intermediate codes corresponding to CCTrCH are partly carried out to power adjustment.

Preferably, in the situation that two two code channels corresponding to CCTrCH are used different intermediate code deviants, according to DataScale ₁and DataScale ₂calculate MidambleScale ₁and MidambleScale ₂comprise: MidambleScale _i=DataScale _i, i=1,2.

Preferably, in the situation that two two code channels corresponding to CCTrCH are used identical intermediate code deviant, according to DataScale ₁and DataScale ₂calculate MidambleScale ₁and MidambleScale ₂also comprise:

${\mathrm{MidambleScale}}_1={\mathrm{MidambleScale}}_2=\frac{\sqrt{{\left({\mathrm{DataScale}}_1\right)}^2+{\left({\mathrm{DataScale}}_2\right)}^2}}{2}.$

Preferably, in radio frequency and Analog Baseband, carrying out power back-off comprises: below using in radio frequency and Analog Baseband, formula carries out power back-off:

$P_{\mathrm{PA}}^{\left(i\right)}=10\·{\log }_{10}\left(P_i\right)+10\·{\log }_{10}{\left(\frac{1}{{\mathrm{DataScale}}_i}\right)}^2+10\·{\log }_{10}\left({\mathrm{\γ}}_i^2\right)+10\·{\log }_{10}\left({\mathrm{\β}}_{i,j}^2\right),$ I=1,2, wherein, β _{i, j}be i gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH.

Preferably, in radio frequency and Analog Baseband, carrying out power back-off also comprises: according to ${\mathrm{\ϵ}}_1=\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}=\sqrt{\frac{P_1\·{\mathrm{\β}}_{1,j}^2}{{\mathrm{SF}}_1}},$ ${\mathrm{\ϵ}}_2=\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}=\sqrt{\frac{P_2\·{\mathrm{\β}}_{2,m}^2}{{\mathrm{SF}}_2}},$ Calculate respectively ε ₁and ε ₂, and calculate respectively ε at log-domain ₁and ε ₂logarithm value η ₁and η ₂, wherein, η ₁>=η ₂, P ₁and P ₂be respectively the linear value of the transmitted power fiducial value of two CCTrCH, SF ₁and SF ₂be respectively the spreading ratio that two CCTrCH are used, β _{1, j}be a gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH, β _{2, m}be that another in two CCTrCH adopts the gain factor of m TFC in corresponding TFCS, γ ₁and γ ₂be respectively the weighted factor of two CCTrCH; Below using in radio frequency and Analog Baseband, formula carries out power back-off:

$P_{\mathrm{PA}}^{\left(1\right)}=P_{\mathrm{PA}}^{\left(2\right)}=10\·{\log }_{10}{({\mathrm{\ϵ}}_1+{\mathrm{\ϵ}}_2)}^2=10\·{\log }_{10}\left({\mathrm{\ϵ}}_1^2\right)+10\·{\log }_{10}{(1+{\mathrm{\ϵ}}_1/{\mathrm{\ϵ}}_2)}^2,$

$=2{\mathrm{\η}}_1+20\·{\log }_{10}(1+\mathrm{\λ})$ I=1,2, wherein, λ=ε ₁/ ε ₂.

To achieve these goals, according to a further aspect in the invention, provide a kind of terminal.

Terminal according to the present invention comprises: power regulation module, and each code channel at two code channels corresponding to two coded combination transmission channel CCTrCH according to power reference value, weighted factor and gain factor, carries out power adjustment in digital baseband; Power back-off module, for carrying out power back-off at radio frequency and Analog Baseband.

Preferably, power regulation module comprises: the first calculating sub module, and for basis $\frac{{\mathrm{DataScale}}_1}{{\mathrm{DataScale}}_2}=\frac{{\mathrm{\ϵ}}_1}{{\mathrm{\ϵ}}_2}$ And DataScale ₁+ DataScale ₁=1, calculate respectively two data field part amplitudes corresponding to CCTrCH and adjust factor D ataScale ₁and DataScale ₂, wherein, ${\mathrm{\ϵ}}_1=\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}=\sqrt{\frac{P_1\·{\mathrm{\β}}_{1,j}^2}{{\mathrm{SF}}_1}},$ ${\mathrm{\ϵ}}_2=\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}=\sqrt{\frac{P_2\·{\mathrm{\β}}_{2,m}^2}{{\mathrm{SF}}_2}},$ P ₁and P ₂be respectively the linear value of the transmitted power fiducial value of two CCTrCH, SF ₁and SF ₂be respectively the spreading ratio that two CCTrCH are used, β _{1, j}be a gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH, β _{2, m}be that another in two CCTrCH adopts the gain factor of m TFC in corresponding TFCS, γ ₁and γ ₂be respectively the weighted factor of two CCTrCH; The first power is adjusted submodule, for according to DataScale ₁and DataScale ₂in digital baseband, two data fields corresponding to CCTrCH are partly carried out to power adjustment; The second calculating sub module, for according to DataScale ₁and DataScale ₂calculate two intermediate code part amplitudes corresponding to CCTrCH and adjust factor M idambleScale ₁and MidambleScale ₂; The second power is adjusted submodule, for according to MidambleScale ₁and MidambleScale ₂in digital baseband, two intermediate codes corresponding to CCTrCH are partly carried out to power adjustment.

Preferably, power back-off module is carried out power back-off specifically for formula below using in radio frequency and Analog Baseband: $P_{\mathrm{PA}}^{\left(i\right)}=10\·{\log }_{10}\left(P_i\right)+10\·{\log }_{10}{\left(\frac{1}{{\mathrm{DataScale}}_i}\right)}^2+10\·{\log }_{10}\left({\mathrm{\γ}}_i^2\right)+10\·{\log }_{10}\left({\mathrm{\β}}_{i,j}^2\right),$ I=1,2, wherein, β _{i, j}be i gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH.

By the present invention, employing is according to power reference value, weighted factor and gain factor, in radio frequency and Analog Baseband, carry out the mode of power back-off, solved and in correlation technique, be difficult to by rated output, adjust the problem that the factor realizes power adjustment when two CCTrCH are mapped as two physical channels, and then reached the effect that realizes accurately and efficiently power adjustment in the situation that two CCTrCH are mapped as two physical channels.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is according to the flow chart of the method for the power adjustment of the embodiment of the present invention;

Fig. 2 is the schematic diagram of the principle that power adjusting factor is calculated when supporting two CCTrCH in the up link of the embodiment of the present invention;

Fig. 3 is according to the structured flowchart of the terminal of the embodiment of the present invention;

Fig. 4 is the concrete structured flowchart according to the terminal of the embodiment of the present invention;

Fig. 5 is the structured flowchart concrete according to the another kind of the terminal of the embodiment of the present invention.

Embodiment

Functional overview

Consider that in correlation technique, being difficult to by rated output, to adjust the factor when two CCTrCH are mapped as two physical channels realizes power adjustment, the invention provides the scheme that a kind of power is adjusted, the treatment principle of this scheme is as follows: in each code channel of two code channels corresponding to two coded combination transmission channel CCTrCH, according to power reference value, weighted factor and gain factor, in digital baseband, carry out power adjustment, and in radio frequency and Analog Baseband, carry out power back-off.By the present invention, can realize and in the situation that two CCTrCH are mapped as two physical channels, realize accurately and efficiently power adjustment.

It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.

In following examples, in the step shown in the flow chart of accompanying drawing, can in the computer system such as one group of computer executable instructions, carry out, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.

Embodiment of the method

According to embodiments of the invention, a kind of method that provides power to adjust.

Fig. 1 is according to the flow chart of the method for the power adjustment of the embodiment of the present invention, as shown in Figure 1, in specific implementation process, consider transmitted power fiducial value (Power Setting), weighted factor (γ) and gain factor (β), the method comprises the following steps S102 to step S104:

Step S102 in each code channel of two code channels corresponding to two CCTrCH, according to power reference value, weighted factor and gain factor, carries out power adjustment in digital baseband;

Step S104 carries out power back-off in radio frequency and Analog Baseband.

In step S102, in digital baseband, carry out power adjustment and be included in data field and partly carry out power back-off and partly carry out power back-off in intermediate code, below this is elaborated.

Data field part: according to formula $\frac{{\mathrm{DataScale}}_1}{{\mathrm{DataScale}}_2}=\frac{{\mathrm{\ϵ}}_1}{{\mathrm{\ϵ}}_2}$ And DataScale ₁+ DataScale ₁=1, calculate respectively two data field part amplitudes corresponding to CCTrCH and adjust factor D ataScale ₁and DataScale ₂, wherein, ${\mathrm{\ϵ}}_1=\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}=\sqrt{\frac{P_1\·{\mathrm{\β}}_{1,j}^2}{{\mathrm{SF}}_1}},$ ${\mathrm{\ϵ}}_2=\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}=\sqrt{\frac{P_2\·{\mathrm{\β}}_{2,m}^2}{{\mathrm{SF}}_2}},$ P ₁and P ₂be respectively the linear value of the transmitted power fiducial value of these two CCTrCH, SF ₁and SF ₂be respectively this two spreading ratio that CCTrCH is used, β _{1, j}for one in these two CCTrCH gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS, β _{2, m}for another in these two CCTrCH adopts the gain factor of m TFC in corresponding TFCS, γ ₁and γ ₂be respectively the weighted factor of these two CCTrCH; According to DataScale ₁and DataScale ₂in digital baseband, data field corresponding to these two CCTrCH partly carried out to power adjustment, in correlation technique, existing concrete power adjustment process, therefore, does not carry out detailed narration at this.

Intermediate code part: according to DataScale ₁and DataScale ₂calculate the intermediate code part amplitude that these two CCTrCH are corresponding and adjust factor M idambleScale ₁and MidambleScale ₂; According to MidambleScale ₁and MidambleScale ₂in digital baseband, intermediate code corresponding to these two CCTrCH partly carried out to power adjustment, in correlation technique, existing concrete power adjustment process, therefore, does not carry out detailed narration at this.The amplitude of intermediate code part is adjusted the factor, is to adjust factor D ataScale according to the amplitude of data field part ₁and DataScale ₂calculate, its objective is that the intermediate code part and the data field base band power partly that make on each code channel equate.Like this, in radio frequency and Analog Baseband, from power angle, just without distinguishing data field and intermediate code part, only need to adopt the same power back-off factor.

In the situation that two code channels corresponding to these two CCTrCH are used different intermediate code deviants, according to DataScale ₁and DataScale ₂calculate MidambleScale ₁and MidambleScale ₂comprise:

MidambleScale _i＝DataScale _i，i＝1，2。

In the situation that two code channels corresponding to these two CCTrCH are used different intermediate code deviants, according to DataScale ₁and DataScale ₂calculate MidambleScale ₁and MidambleScale ₂comprise:

${\mathrm{MidambleScale}}_1={\mathrm{MidambleScale}}_2=\frac{\sqrt{{\left({\mathrm{DataScale}}_1\right)}^2+{\left({\mathrm{DataScale}}_2\right)}^2}}{2}.$

In step S104, in radio frequency and Analog Baseband, carry out power back-off and can be undertaken by two kinds of modes.

Mode one

Below using in radio frequency and Analog Baseband, formula carries out power back-off:

$P_{\mathrm{PA}}^{\left(i\right)}=10\·{\log }_{10}\left(P_i\right)+10\·{\log }_{10}{\left(\frac{1}{{\mathrm{DataScale}}_i}\right)}^2+10\·{\log }_{10}\left({\mathrm{\γ}}_i^2\right)+10\·{\log }_{10}\left({\mathrm{\β}}_{i,j}^2\right),$ I=1,2, wherein, β _{i, j}be i gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH.

Mode two

According to ${\mathrm{\ϵ}}_1=\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}=\sqrt{\frac{P_1\·{\mathrm{\β}}_{1,j}^2}{{\mathrm{SF}}_1}},$ ${\mathrm{\ϵ}}_2=\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}=\sqrt{\frac{P_2\·{\mathrm{\β}}_{2,m}^2}{{\mathrm{SF}}_2}},$ Calculate respectively ε ₁and ε ₂, and calculate respectively ε at log-domain ₁and ε ₂logarithm value η ₁and η ₂, wherein, η ₁>=η ₂, P ₁and P ₂be respectively the linear value of the transmitted power fiducial value of these two CCTrCH, SF1 and SF2 are respectively this two spreading ratio that CCTrCH is used, β _{1, j}for one in these two CCTrCH gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS, β _{2, m}be that another in two CCTrCH adopts the gain factor of m TFC in corresponding TFCS, γ ₁and γ ₂be respectively the weighted factor of two CCTrCH; Below using in radio frequency and Analog Baseband, formula carries out power back-off:

$P_{\mathrm{PA}}^{\left(1\right)}=P_{\mathrm{PA}}^{\left(2\right)}=10\·{\log }_{10}{({\mathrm{\ϵ}}_1+{\mathrm{\ϵ}}_2)}^2=10\·{\log }_{10}\left({\mathrm{\ϵ}}_1^2\right)+10\·{\log }_{10}{(1+{\mathrm{\ϵ}}_1/{\mathrm{\ϵ}}_2)}^2,$

$=2{\mathrm{\η}}_1+20\·{\log }_{10}(1+\mathrm{\λ})$ i＝1，2，

Wherein, λ=ε ₁/ ε ₂.

Below in conjunction with example, the implementation procedure of the embodiment of the present invention is described in detail.

Example one

Fig. 2 is the schematic diagram of the principle that power adjusting factor is calculated when supporting two CCTrCH in the up link of the embodiment of the present invention, below in conjunction with Fig. 2 computational methods of power adjusting factor when supporting two CCTrCH in up link, is elaborated.

When two CCTrCH respectively account for a code channel, the power ratio between them is not only relevant with γ, also relevant with transmitted power fiducial value and β value separately.For the ease of deriving and explanation, defined variable is as follows:

${\mathrm{\ϵ}}_1=\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}=\sqrt{\frac{P_1\·{\mathrm{\β}}_{1,j}^2}{{\mathrm{SF}}_1}}---\left(1\right)$

${\mathrm{\ϵ}}_2=\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}=\sqrt{\frac{P_2\·{\mathrm{\β}}_{2,m}^2}{{\mathrm{SF}}_2}}$

Wherein, P ₁and P ₂be respectively the linear value (being obtained by open loop or close-loop power control) of the transmitted power fiducial value of two CCTrCH; And suppose that first CCTrCH adopts its corresponding transport format combination set (Transport Format Combination Set, referred to as TFCS) in j transformat combination (Transport Format Combination, referred to as TFC), and second CCTrCH adopts m TFC in its corresponding TFCS; The spreading ratio that two CCTrCH are used is respectively SF ₁and SF ₂.

1, data field part amplitude is adjusted the calculating of the factor.

Suppose that two the data field part amplitudes adjustment factors corresponding to CCTrCH are respectively: DataScale ₁and DataScale ₂, the data field part amplitude adjustment factor should meet following constraints:

$\frac{{\mathrm{DataScale}}_1}{{\mathrm{DataScale}}_2}=\frac{{\mathrm{\ϵ}}_1}{{\mathrm{\ϵ}}_2},$ DataScale ₁+DataScale ₁＝1 (2)

By calculating two the data field part amplitudes adjustment factors corresponding to CCTrCH, be:

${\mathrm{DataScale}}_1=\frac{1}{1+{\mathrm{\ϵ}}_2/{\mathrm{\ϵ}}_1},$ ${\mathrm{DataScale}}_2=\frac{1}{1+{\mathrm{\ϵ}}_1/{\mathrm{\ϵ}}_2}---\left(3\right)$

According to the data field part amplitude calculating, adjust the factor, in digital baseband, data field corresponding to these two CCTrCH partly carried out to power adjustment.

2, intermediate code part amplitude is adjusted the calculating of the factor.

Suppose that two the intermediate code part amplitudes adjustment factors corresponding to CCTrCH are respectively: MidambleScale ₁and MidambleScale ₂.

When two two code channels corresponding to CCTrCH are used different intermediate code deviants, intermediate code part and data field partly adopt identical power stacked system, consistent with the base band power of data field part in order to ensure the intermediate code part on each code channel, can directly the amplitude of data field part be adjusted to the factor and be applied to corresponding intermediate code part, as shown in formula (4).

MidambleScale _i＝DataScale _i，i＝1，2 (4)

When two two code channels corresponding to CCTrCH are used identical intermediate code deviant, the base band transmitted power of intermediate code part and be on two code channels corresponding to two CCTrCH: (MidambleScale ₁+ MidambleScale ₂) ², and the base band transmitted power of data field part and be: (DataScale ₁) ²+ (DataScale ₂) ².For the base band transmitted power of intermediate code part and data field part is consistent, the amplitude of intermediate code part is adjusted the factor and can be set to:

${\mathrm{MidambleScale}}_1={\mathrm{MidambleScale}}_2=\frac{\sqrt{{\left({\mathrm{DataScale}}_1\right)}^2+{\left({\mathrm{DataScale}}_2\right)}^2}}{2}---\left(5\right)$

According to the intermediate code part amplitude calculating, adjust the factor, in digital baseband, data field corresponding to these two CCTrCH partly carried out to power adjustment.

3, the power back-off in radio frequency and Analog Baseband.

For i code channel, its data field part adopts amplitude factor DataScale in digital baseband _i(i=1,2) are adjusted, and therefore in radio frequency and Analog Baseband, must compensate, and the power back-off factor is: (1/DataScale _i) ², after considering transmitted power fiducial value (Power Setting), weighted factor (γ), gain factor (β) and the amplitude adjustment factor, the transmitted power dB value of working control radio frequency and Analog Baseband is:

$P_{\mathrm{PA}}^{\left(i\right)}=10\·{\log }_{10}\left(P_i\right)+10\·{\log }_{10}{\left(\frac{1}{{\mathrm{DataScale}}_i}\right)}^2+10\·{\log }_{10}\left({\mathrm{\γ}}_i^2\right)+10\·{\log }_{10}\left({\mathrm{\β}}_{i,j}^2\right)---\left(6\right)$

Bring formula (3) into formula (6), obtain:

$P_{\mathrm{PA}}^{\left(1\right)}=P_{\mathrm{PA}}^{\left(2\right)}=10\·{\log }_{10}{({\mathrm{\ϵ}}_1+{\mathrm{\ϵ}}_2)}^2---\left(7\right)$

In the inconsistent situation of base band transmitted power of intermediate code part and data field part, the power back-off in radio frequency and Analog Baseband also can adopt the amplitude of data field part to adjust the factor and the common compensation of intermediate code part.

Excessive in order to prevent the power difference of two CCTrCH on a time slot, also can when determining their transmitted power fiducial value, add some protections (for example, guaranteeing that difference power is between the two no more than 20dB).

Example two

Amplitude is adjusted to the factor and simplify calculating.

In formula (3) and formula (7), ε ₁and ε ₂while participating in computing, for dynamic range and data precision, higher requirement is all proposed.In order to reduce computation complexity as far as possible, avoid the frequent transitions between linear domain and log-domain, can adopt following simplification computational methods calculating amplitude to adjust the factor, carry out the adjustment of power.

First, according to formula (1), calculate ε ₁and ε ₂, and calculate respectively ε at log-domain ₁and ε ₂logarithm value η ₁and η ₂:

${\mathrm{\η}}_1=10\·{\log }_{10}\left({\mathrm{\ϵ}}_1\right)=10\·{\log }_{10}\left(\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}\right)=\frac{1}{2}\·[P_{1,\mathrm{Log}}-10\·{\log }_{10}\left({\mathrm{SF}}_1\right)+10\·{\log }_{10}\left({\mathrm{\β}}_{1,j}^2\right)]$

${\mathrm{\η}}_2=10\·{\log }_{10}\left({\mathrm{\ϵ}}_2\right)=10\·{\log }_{10}\left(\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}\right)=\frac{1}{2}\·[P_{2,\mathrm{Log}}-10\·{\log }_{10}\left({\mathrm{SF}}_2\right)+10\·{\log }_{10}\left({\mathrm{\β}}_{2,m}^2\right)]---\left(8\right)$

Wherein, P _{i, log}(i=1,2) are P _i(i=1,2) are in the value of log-domain; 10log ₁₀(β _{1, j} ²) and 10log ₁₀(β _{2, m} ²) computed in advance by control unit, then, then configure 10log to arithmetic element ₁₀(SF _i) (i=1,2) can obtain by the mode such as table look-up.

Secondly, calculate ε ₁and ε ₂ratio:

$\mathrm{\λ}={\mathrm{\ϵ}}_2/{\mathrm{\ϵ}}_1={10}^{\frac{({\mathrm{\η}}_2-{\mathrm{\η}}_1)}{10}}$

Might as well suppose η ₁>=η ₂, λ be (0,1] real number in scope, when software is realized, can consider to adopt Taylor series expansion to obtain.

Again, can calculate DataScale ₁and DataScale ₂value, formula (3) is converted into:

${\mathrm{DataScale}}_1=\frac{1}{1+\mathrm{\λ}},$ DataScale ₂＝1-DataScale ₁ (9)

Finally, the radio frequency after rated output compensation and the transmitted power of Analog Baseband, formula (7) is converted into:

$P_{\mathrm{PA}}^{\left(1\right)}=P_{\mathrm{PA}}^{\left(2\right)}=10\·{\log }_{10}{({\mathrm{\ϵ}}_1+{\mathrm{\ϵ}}_2)}^2=10\·{\log }_{10}\left({\mathrm{\ϵ}}_1^2\right)+10\·{\log }_{10}{(1+{\mathrm{\ϵ}}_1/{\mathrm{\ϵ}}_2)}^2$

$=2{\mathrm{\η}}_1+20\·{\log }_{10}(1+\mathrm{\λ})---\left(10\right)$

Device embodiment

According to embodiments of the invention, provide a kind of terminal.

Fig. 3 is according to the structured flowchart of the terminal of the embodiment of the present invention, and as shown in Figure 3, this device comprises: power regulation module 32, power back-off module 34, be elaborated to this structure below.

Power regulation module 32, each code channel at two code channels corresponding to two coded combination transmission channel CCTrCH according to power reference value, weighted factor and gain factor, carries out power adjustment in digital baseband; Power back-off module 34 is connected to power regulation module 32, for carrying out power back-off at radio frequency and Analog Baseband.

Fig. 4 is the concrete structured flowchart according to the terminal of the embodiment of the present invention, as shown in Figure 4, power regulation module 32 comprises: the first calculating sub module 42, the first power are adjusted submodule 44, the second calculating sub module 46, the first power adjustment submodule 48, below this structure are elaborated.

The first calculating sub module 42, for basis $\frac{{\mathrm{DataScale}}_1}{{\mathrm{DataScale}}_2}=\frac{{\mathrm{\ϵ}}_1}{{\mathrm{\ϵ}}_2}$ And DataScale ₁+ DataScale ₁=1, calculate respectively two data field part amplitudes corresponding to CCTrCH and adjust factor D ataScale ₁and DataScale ₂, wherein,

${\mathrm{\ϵ}}_1=\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}=\sqrt{\frac{P_1\·{\mathrm{\β}}_{1,j}^2}{{\mathrm{SF}}_1}},$ ${\mathrm{\ϵ}}_2=\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}=\sqrt{\frac{P_2\·{\mathrm{\β}}_{2,m}^2}{{\mathrm{SF}}_2}},$

P ₁and P ₂the linear value that is respectively the transmitted power fiducial value of two CCTrCH, SF1 and SF2 are respectively the spreading ratio that two CCTrCH are used, β _{1, j}be a gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH, β _{2, m}be that another in two CCTrCH adopts the gain factor of m TFC in corresponding TFCS, γ ₁and γ ₂be respectively the weighted factor of two CCTrCH; The first power is adjusted submodule 44 and is connected to the first calculating sub module 42, for according to DataScale ₁and DataScale ₂in digital baseband, two data fields corresponding to CCTrCH are partly carried out to power adjustment; The second calculating sub module 46 is connected to the first calculating sub module 42, for according to DataScale ₁and DataScale ₂calculate two intermediate code part amplitudes corresponding to CCTrCH and adjust factor M idambleScale ₁and MidambleScale ₂; The second power is adjusted submodule 48 and is connected to the second calculating sub module 46, for according to MidambleScale ₁and MidambleScale ₂in digital baseband, two intermediate codes corresponding to CCTrCH are partly carried out to power adjustment.

Power back-off module 34 is carried out power back-off specifically for formula below using in radio frequency and Analog Baseband:

$P_{\mathrm{PA}}^{\left(i\right)}=10\·{\log }_{10}\left(P_i\right)+10\·{\log }_{10}{\left(\frac{1}{{\mathrm{DataScale}}_i}\right)}^2+10\·{\log }_{10}\left({\mathrm{\γ}}_i^2\right)+10\·{\log }_{10}\left({\mathrm{\β}}_{i,j}^2\right),$ I=1,2, wherein, β _{i, j}be i gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH.

Fig. 5 is the structured flowchart concrete according to the another kind of the terminal of the embodiment of the present invention, and as shown in Figure 5, power back-off module 34 comprises: the 3rd calculating sub module 52, the 4th calculating sub module 54, power back-off submodule 56, be elaborated to this structure below.

The 3rd calculating sub module 52, for according to power reference value, weighted factor and gain factor, calculates respectively ε ₁and ε ₂, wherein,

${\mathrm{\ϵ}}_1=\sqrt{P_1\·{\mathrm{\γ}}_1^2\·{\mathrm{\β}}_{1,j}^2}=\sqrt{\frac{P_1\·{\mathrm{\β}}_{1,j}^2}{{\mathrm{SF}}_1}},$ ${\mathrm{\ϵ}}_2=\sqrt{P_2\·{\mathrm{\γ}}_2^2\·{\mathrm{\β}}_{2,m}^2}=\sqrt{\frac{P_2\·{\mathrm{\β}}_{2,m}^2}{{\mathrm{SF}}_2}},$

P ₁and P ₂the linear value that is respectively the transmitted power fiducial value of two CCTrCH, SF1 and SF2 are respectively the spreading ratio that two CCTrCH are used, β _{1, j}be a gain factor that adopts j transformat combination TFC in corresponding transport format combination set TFCS in two CCTrCH, β _{2, m}be that another in two CCTrCH adopts the gain factor of m TFC in corresponding TFCS, γ ₁and γ ₂be respectively the weighted factor of two CCTrCH; The 4th calculating sub module 54 is connected to the 3rd calculating sub module 52, for calculating respectively ε at log-domain ₁and ε ₂logarithm value η ₁and η ₂, wherein, η ₁>=η ₂; Power back-off submodule 56 is connected to the 4th calculating sub module 54, for formula below radio frequency and Analog Baseband are used, carries out power back-off:

$P_{\mathrm{PA}}^{\left(1\right)}=P_{\mathrm{PA}}^{\left(2\right)}=10\·{\log }_{10}{({\mathrm{\ϵ}}_1+{\mathrm{\ϵ}}_2)}^2=10\·{\log }_{10}\left({\mathrm{\ϵ}}_1^2\right)+10\·{\log }_{10}{(1+{\mathrm{\ϵ}}_1/{\mathrm{\ϵ}}_2)}^2,$

$=2{\mathrm{\η}}_1+20\·{\log }_{10}(1+\mathrm{\λ})$ i＝1，2，

Wherein, λ=ε ₁/ ε ₂.

In sum, by the present invention, can in the situation that being mapped as two physical channels, realize accurately and efficiently two CCTrCH power adjustment.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (8)

1. A method for power adjustment, comprising: In each of the two code channels corresponding to the two coded combined transmission channels CCTrCH, according to the power reference value, weighting factor and gain factor, perform power adjustment in the digital baseband, and perform power compensation in the radio frequency and analog baseband; Among them, the power adjustment in the digital baseband includes: according to and DataScale ₁ +DataScale ₁ =1, respectively calculate the data domain partial amplitude adjustment factors DataScale ₁ and DataScale ₂ corresponding to the two CCTrCHs, wherein, ${\mathrm{\&epsiv;}}_1=\sqrt{P_1\&CenterDot;{\mathrm{\&gamma;}}_1^2\&Center\; Dot;{\mathrm{\&beta;}}_{1,j}^2}=\sqrt{\frac{P_1\&CenterDot;{\mathrm{\&beta;}}_{1,j}^2}{{\mathrm{SF}}_1}},{\mathrm{\&epsiv;}}_2=\sqrt{P_2\&Center\; Dot;{\mathrm{\&gamma;}}_2^2\&Center\; Dot;{\mathrm{\&beta;}}_{2,m}^2}=\sqrt{\frac{P_2\&CenterDot;{\mathrm{\&beta;}}_{2,m}^2}{{\mathrm{SF}}_2}},$ P ₁ and P ₂ are the linear values of the transmit power reference values of the two CCTrCHs respectively, SF ₁ and SF ₂ are the spreading ratios used by the two CCTrCHs respectively, and β _1,j is the two CCTrCHs One of them adopts the gain factor corresponding to the j-th transport format combination TFC in the transport format combination set TFCS, β _{2, m} is the gain factor corresponding to the m-th TFC in the TFCS used by the other of the two CCTrCHs, γ ₁ and γ ₂ are the weighting factors of the two CCTrCHs respectively; according to the DataScale ₁ and the DataScale ₂ , power adjustment is performed on the data domain part corresponding to the two CCTrCHs in the digital baseband. 2. method according to claim 1, is characterized in that, after calculating described DataScale ₁ and described DataScale ₂ , described method also comprises: Calculate the midamble partial amplitude adjustment factors MidambleScale ₁ and MidambleScale ₂ corresponding to the two CCTrCHs according to the DataScale ₁ and the DataScale ₂ ; Perform power adjustment on the midamble parts corresponding to the two CCTrCHs in the digital baseband according to the MidambleScale ₁ and the MidambleScale ₂ . 3. The method according to claim 2, wherein, when the two code channels corresponding to the two CCTrCHs use different midamble offset values, calculate according to the DataScale ₁ and the DataScale ₂ The MidambleScale ₁ and the MidambleScale ₂ include: MidambleScale _i =DataScale _i , i=1,2. 4. The method according to claim 2, wherein, when the two code channels corresponding to the two CCTrCHs use the same midamble offset value, calculate according to the DataScale ₁ and the DataScale ₂ The MidambleScale ₁ and the MidambleScale ₂ also include: ${\mathrm{<span\; class="notranslate">\; MidambleScale</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; MidambleScale</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\frac{\sqrt{{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; DataScale</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; DataScale</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; .</span>$ 5. The method according to claim 1, wherein performing power compensation in radio frequency and analog baseband comprises: Use the following formula for power compensation in RF and analog baseband: $P_{\mathrm{PA}}^{\left(i\right)}=10\&Center\; Dot;{\log }_{10}\left(P_i\right)+10\&CenterDot;{\log }_{10}{\left(\frac{1}{{\mathrm{DataScale}}_i}\right)}^2+10\&CenterDot;{\log }_{10}\left({\mathrm{\&gamma;}}_i^2\right)+10\&Center\; Dot;{\log }_{10}\left({\mathrm{\&beta;}}_{i,j}^2\right),$ i=1,2, where β _ij is the gain factor of the i-th of the two CCTrCHs using the j-th transport format combination TFC in the corresponding transport format combination set TFCS. 6. The method according to claim 1, wherein performing power compensation in radio frequency and analog baseband further comprises: according to ${\mathrm{\&epsiv;}}_1=\sqrt{P_1\&Center\; Dot;{\mathrm{\&gamma;}}_1^2\&CenterDot;{\mathrm{\&beta;}}_{1,j}^2}=\sqrt{\frac{P_1\&CenterDot;{\mathrm{\&beta;}}_{1,j}^2}{{\mathrm{SF}}_1}},{\mathrm{\&epsiv;}}_2=\sqrt{P_2\&Center\; Dot;{\mathrm{\&gamma;}}_2^2\&Center\; Dot;{\mathrm{\&beta;}}_{2,m}^2}=\sqrt{\frac{P_2\&CenterDot;{\mathrm{\&beta;}}_{2,m}^2}{{\mathrm{SF}}_2}},$ Calculate the ε ₁ and the ε ₂ respectively, and calculate the logarithmic values η ₁ and _{η 2} of the ε 1 and the ε ₂ respectively in the logarithmic domain, wherein, _{η 1 ≥ η 2} , P ₁ and P ₂ are the linear values of the transmit power reference values of the two CCTrCHs respectively, SF ₁ and SF ₂ are the spreading ratios used by the two CCTrCHs respectively, and β _{1, j} is the corresponding The gain factor of the j-th transport format combination TFC in the transport format combination set TFCS, β _{2, m} is the gain factor of the m-th TFC in the corresponding TFCs adopted by the other of the two CCTrCHs, γ ₁ and γ ₂ are respectively the weighting factors of the two CCTrCHs; Use the following formula for power compensation in RF and analog baseband: $P_{\mathrm{PA}}^{\left(1\right)}=P_{\mathrm{PA}}^{\left(2\right)}=10\&Center\; Dot;{\log }_{10}{({\mathrm{\&epsiv;}}_1+{\mathrm{\&epsiv;}}_2)}^2=10\&Center\; Dot;{\log }_{10}\left({\mathrm{\&epsiv;}}_1^2\right)+10\&CenterDot;{\log }_{10}{(1+{\mathrm{\&epsiv;}}_1/{\mathrm{\&epsiv;}}_2)}^2={2\mathrm{\&eta;}}_1+20\&CenterDot;{\log }_{10}(1+\mathrm{\&lambda;})$ $,i=\mathrm{1,2},$ Among them, λ=ε ₁ /ε ₂ . 7. A terminal, characterized in that, comprising: The power adjustment module is used to perform power adjustment in the digital baseband according to the power reference value, weighting factor and gain factor in each of the two code channels corresponding to the two coded combined transport channels CCTrCH; Power compensation module for power compensation in radio frequency and analog baseband; Wherein, the power adjustment module includes: The first calculation sub-module is used to and DataScale ₁ +DataScale ₁ =1, respectively calculate the data domain partial amplitude adjustment factors DataScale ₁ and DataScale ₂ corresponding to the two CCTrCHs, wherein, ${\mathrm{\&epsiv;}}_1=\sqrt{P_1\&Center\; Dot;{\mathrm{\&gamma;}}_1^2\&Center\; Dot;{\mathrm{\&beta;}}_{1,j}^2}=\sqrt{\frac{P_1\&Center\; Dot;{\mathrm{\&beta;}}_{1,j}^2}{{\mathrm{SF}}_1}},{\mathrm{\&epsiv;}}_2=\sqrt{P_2\&Center\; Dot;{\mathrm{\&gamma;}}_2^2\&Center\; Dot;{\mathrm{\&beta;}}_{2,m}^2}=\sqrt{\frac{P_2\&Center\; Dot;{\mathrm{\&beta;}}_{2,m}^2}{{\mathrm{SF}}_2}},$ P ₁ and P ₂ are the linear values of the transmit power reference values of the two CCTrCHs respectively, SF ₁ and SF ₂ are the spreading ratios used by the two CCTrCHs respectively, and β _1,j is the two CCTrCHs One of them adopts the gain factor corresponding to the j-th transport format combination TFC in the transport format combination set TFCS, β _{2, m} is the gain factor corresponding to the m-th TFC in the TFCS used by the other of the two CCTrCHs, γ ₁ and γ ₂ are the weighting factors of the two CCTrCHs respectively; The first power adjustment submodule is configured to perform power adjustment on the data domain parts corresponding to the two CCTrCHs in the digital baseband according to the DataScale ₁ and the DataScale ₂ ; The second calculation submodule is used to calculate the midamble part amplitude adjustment factors MidambleScale ₁ and MidambleScale ₂ corresponding to the two CCTrCHs according to the DataScale ₁ and the DataScale ₂ ; The second power adjustment sub-module is configured to perform power adjustment on the midamble parts corresponding to the two CCTrCHs in the digital baseband according to the MidambleScale ₁ and the MidambleScale ₂ . 8. The terminal according to claim 7, wherein the power compensation module is specifically used to perform power compensation using the following formula in radio frequency and analog baseband: ${\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; PA</span>}}^{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 10</span>}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; log</span>}}_{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 10</span>}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; log</span>}}_{\mathrm{<span\; class="notranslate">\; 10</span>}}{<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; DataScale</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 10</span>}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; log</span>}}_{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; \&gamma;</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 10</span>}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; log</span>}}_{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1,2</span>}<span\; class="notranslate">\; ,</span>$ Wherein, β _ij is the gain factor of the i-th of the two CCTrCHs adopting the j-th transport format combination TFC in the corresponding transport format combination set TFCS.