CN1937441B - Power control method - Google Patents

Abstract

This method realizes power control on the up-going link of WCDMA system of using up-going boosting technique. It collects statistic of the error block ratio (EBT) on DPDCH. According to the aim value of EBT preset by the system, it calculates the signal interference ratio of renewed DPCCH, then according to the calculation result, regulates and controls the emitting power on DPCCH. The method collects statistic of real error block ratio and the number of re-transfer of MAC-d flow on E-DPDCH, calculates the power shift parameter of each MAC-d flow, then according to the calculation result, regulates the emitting power on each MAC-d flow. This power control method is applied on up-going link of WCDMA system of using up-going boosting technique. The invention regulates the emitting power of DPDCH and E-DPDCH periodically to ensure service quality and reduces interference inside the system.

Description

Poewr control method

Technical field

The present invention relates to the power control techniques in the broadband CDMA system, relate in particular to the Poewr control method that adopts the up link of up enhancement techniques in the broadband CDMA system.

Background technology

Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code Division Multiple Access) is as one of 3G (Third Generation) Moblie standard of the three kinds of main flows in the world, among himself system is in and constantly improves.In the Release5 version, introduced high speed downlink packet access technology (HSDPA, High Speed Downlink Packet Access) among the WCDMA, thereby improved the handling capacity of down link greatly.Corresponding with it, high-speed uplink packet access technique (HSUPA, High Speed Uplink PacketAccess) has been introduced in the Release6 version of WCDMA, and the formulation of HSUPA standard is finished at present substantially.The core objective of HSUPA technology is by adopting up technique for enhancing, as the scheduling of Node B control, mix automatic repeat requests technology such as (HARQ, Hybrid Automatic RepeatRequest), improves the throughput of ascending packet data.

In the Release6 version of WCDMA, uplink special physical channel comprises Dedicated Physical Control Channel (DPCCH, Dedicated Physical Control Channel), Dedicated Physical Data Channel (DPDCH, Dedicated Physical Data Channel), High-Speed Dedicated Physical Control Channel (HS-DPCCH, HighSpeed Dedicated Physical Control Channel), strengthen Dedicated Physical Data Channel (E-DPDCH, Enhanced Dedicated Physical Data Channel) and strengthen Dedicated Physical Control Channel (E-DPCCH, Enhanced Dedicated Physical Control Channel).DPDCH is last to be carried delay requirement usually than higher business, as speech business; The last carrying usually of the E-DPDCH business not high to delay requirement is as the data business.Simultaneously, in order to support HARQ and base station (Node B) scheduling, Universal Terrestrial Radio Access Network network (UTRAN among the Release6 of WCDMA, UniversalTerrestril Radio Access Network) side is at existing medium access control (MAC, MediumAccess Control) on the basis of entity MAC-d, two MAC entity MAC-e and MAC-es have been increased newly.

Fig. 1 is subscriber equipment (UE, User Equipment) side uplink special physical channel (DPCCH, DPDCH, HS-DPCCH, E-DPCCH, spread spectrum schematic diagram E-DPDCH) in the Release6 version of WCDMA.As shown in Figure 1, the data on each physical channel of UE side are after spread spectrum module 101,102 and 103 separately, by the data flow of spread processing pluralize, i.e. S _Dpch, S _Hs-dpcchAnd S _E-dpchThe data flow of a synthetic plural form after 104 additions of above-mentioned 3 kinds of data flow process summation module; Subsequently, at scrambler module 105 places through scrambler sequence S _DpcnBehind the scrambler, output signal S.Signal S handles the back through other a series of emission and is sent to the UTRAN side by air interface.

Below simple the introduction through air interface transmission back HSUPA user uplink data how to handle in the UTRAN side.Fig. 2 is the processing schematic diagram of UTRAN side HSUPA user physical layer data in the Release6 version of WCDMA, and this figure has illustrated how the physical layer data after demodulating is transferred to high-rise corresponding logic channel.Among Fig. 2 the half of expression in left side physical layer data after demodulating be mapped to data in the logic channel process each functional module of process, the form of later data is handled in right half of expression through left side the corresponding function module.Pass through base band signal process, the HSUPA user data of the P in the antenna samples signal E-DPDCH physical channel carrying is by the despreading descrambling, and by the data behind this despreading descrambling being carried out deinterleaving, separating rate-matched and turbine (turbo) decoding processing, the dedicated channel that is enhanced (E-DCH, EnhancedDedicated Channel) source data MAC-e protocol Data Unit (PDU, Protocol DataUnit), i.e. the DATA of L1 layer among Fig. 2.In the automatic repeat requests functional module 201 of mixing in the MAC-e layer, MAC-e PDU data block is carried out cyclic redundancy check (CRC) (CRC, Cyclic RedundancyCheck), whether correct to judge the data after the demodulation: if correct, then carry out demultiplexing by 202 couples of MAC-e PDU of demultiplexing functional module and handle, demultiplexing goes out each MAC-d data flow; If incorrect, then require HSUPA user to retransmit this data.Each MAC-d data flow is uploaded to the distribution function module 203 that reorders of MAC-es layer by the transmission bearer transferring data frames (FP, Frame Protocol) of interface Iub/Iur.In the distribution function module 203 that reorders, data indicator (DDI according to institute's configuration signal parameter, Data Description Indicator) and MAC-d PDU sequence number N, the MAC-es PDU in each MAC-d data flow is imported respectively in the queuing buffer memory of logic channel separately.And with after the order rearrangement combination of MAC-es PDU according to transmission sequence number (TSN, Transmission Sequence Number), the data upload after further will making up is to splitting functional module 205 in reordering function module 204.Split functional module and be responsible for decomposing MAC-es PDU, the head of deletion MAC-es PDU, and add Logic Channel Identifier C/T, reassemble into MAC-d PDU.The data flow of MAC-d PDU is uploaded to user's MAC-d entity, and the MAC-d entity is responsible for the identification of MAC-d PDU logic channel, and splits out Radio Link control (RLC, Radio Link Control) PDU, is uploaded to corresponding logic channel.At last, RLC PDU further is uploaded to high level by logic channel separately.

The physical channel of WCDMA Release6 version up link and emission, the receiving course of data have more than been introduced.As shown in the above, up link has increased some MAC entities than previous version in the Release6 version, owing to adopted up enhancement techniques, the Release6 version is also different with previous version to the processing that receives data in the UTRAN side simultaneously.

Because in the WCDMA system, many users are operated in same frequency, the self-interference of system is a very serious problem.In addition, the WCDMA system also is subjected to the influence of near-far interference, corner effect and path loss, and therefore, it is one of key technology of WCDMA that the through-put power of uplink and downlink link is controlled.The effect of the power control of WCDMA system is exactly under the situation that guarantees quality of service, and the through-put power of up link and down link is adjusted to required minimum degree, thereby reduces to disturb, and improves power system capacity, improves the covering of system.WCDMA Release6 version adopts the up enhancement techniques of knowing clearly on up link, and the scheme of also not controlling at the power of this up link in the prior art, so prior art can't reasonably be controlled the transmitting power of the up link of WCDMA Release6 system, be difficult to guarantee communication quality professional in the WCDMA Release6 system, thereby further have influence on the raising of power system capacity.

Summary of the invention

In view of this, the object of the present invention is to provide the Poewr control method of up link in the WCDMA system, in the WCDMA system that adopts up enhancement techniques, realize the power control of up link.

Based on above-mentioned purpose, the method for a kind of power control provided by the invention is applied to adopt on the Dedicated Physical Data Channel DPDCH in the Wideband Code Division Multiple Access (WCDMA) WCDMA system up-link of up enhancement techniques, may further comprise the steps:

A, the Block Error Rate in the statistics predetermined period of time on the DPDCH;

B goes up the desired value of Block Error Rate and calculates signal interference ratio SIR adjusted value on the special used for physical control channel DPCCH according to steps A Block Error Rate that obtains and the DPDCH that sets in advance; Above-mentioned SIR adjusted value is added sir target value after a last cycle time sir target value obtains upgrading;

C, sir target value after the renewal that step B is obtained and the SIR estimated value on the DPCCH are compared, and adjust the size of the transmitting power on the DPCCH in the up link according to comparative result; Power according to the described DPDCH of the biasing of the constant power between the transmitting power of described DPDCH and DPCCH control.

In the method for power provided by the invention control, the SIR adjusted value described in the step B be according to $\frac{(\frac{{\mathrm{BLET}}_{\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{\mathrm{DPDCH},\max }\×r_{\mathrm{DPDCH}}$ Calculate, wherein, BLER _DPDCH(n) be the statistical value that DPDCH goes up Block Error Rate in the current described time cycle, BLER _{DPDCH, target}Be the desired value of Block Error Rate on the DPDCH that sets in advance, UpStep _{DPDCH, max}Be the maximum rising step-length on the DPDCH that is provided with of system, r _DPDCHBe towards cell parameter, n represents the current described time cycle.

In the method for power control provided by the invention, at execution in step A of radio network controller (RNC) place and step B;

Further comprise in step B: the sir target value after RNC will upgrade by the Data Control frame is sent to base station node B;

In step C, further comprise: sir target value after Node B relatively upgrades and SIR estimated value, according to the comparative result transmission power control commands to the user equipment (UE) place; UE adjusts the size of the transmitting power on the DPCCH according to power control command.

In the method for power provided by the invention control, the statistics of error rate described in the steps A comprises: add up the total data piece that receives on the DPDCH in the described time cycle and the number of error block, the latter is obtained described Block Error Rate divided by the former.

In the method for power control provided by the invention, transmitting power on the adjustment DPCCH described in the step C comprises: the rising step-length that is provided with according to system increases the transmitting power on the DPCCH, or reduces transmitting power on the DPCCH according to the decline step-length of system's setting.

Based on above-mentioned purpose, the method for another kind of power control provided by the invention is applied to adopt on the MAC-d stream of the enhancing Dedicated Physical Control Channel E-DPDCH in the WCDMA system up-link of up enhancement techniques, may further comprise the steps:

A adds up the average Block Error Rate that each MAC-d flows in the predetermined period of time respectively, adds up the Block Error Rate on the DPDCH in the above-mentioned time cycle;

B calculates DPCCH according to the desired value of the statistical value of the Block Error Rate on the above-mentioned DPDCH and the Block Error Rate that sets in advance and goes up the SIR adjusted value; Calculate the adjusted value of the automatic repeat requests HARQ power offset parameter of mixing of each MAC-d stream respectively according to the block error probability desired value of the average Block Error Rate of each MAC-d stream and each MAC-d stream of setting in advance; The adjusted value of HARQ power offset parameter is added the HARQ power offset parameter of last one-period, and deduct upward SIR adjusted value of described DPCCH, obtain the HARQ power offset parameter of each MAC-d stream;

C calculates the power bias that each MAC-d flows relative E-DPDCH according to the HARQ power offset parameter that obtains among the step b, and adjusts the transmitting power of the MAC-d stream of each up E-DPDCH respectively according to result of calculation.

In the method for power provided by the invention control, the adjusted value of the HARQ power offset parameter described in the step b be according to $\frac{(\frac{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{j,E-\mathrm{DPDCH},\max }\×r_{k,E-\mathrm{DPDCH}}$ Calculate, wherein, j represents corresponding MAC-d stream, BLER _{J, E-DPDCH}(m) the average Block Error Rate of MAC-d stream in the current described time cycle of expression, BLER _{J, E-DPDCH, targ et}The desired value of the Block Error Rate of expression MAC-d stream, UpStep _{J, E-DPDCH, max}Maximum rising step-length on the expression E-DPDCH, r _{J, E-DPDCH}Be towards cell parameter, m represents the current described time cycle.

In the method for power provided by the invention control, the DPCCH described in the step b go up the SIR adjusted value be according to $\underset{n=m}{\overset{m+1}{\mathrm{\Σ}}}\frac{(\frac{{\mathrm{BLER}}_{\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{\mathrm{DPDCH},\max }\×r_{\mathrm{DPDCH}}$ Calculate, wherein, BLER _DPDCH(n) be the statistical value that DPDCH goes up Block Error Rate in the current described time cycle, BLER _{DPDCH, t arg et}Be the desired value of Block Error Rate on the DPDCH that sets in advance, UpSteP _{DPDCH, max}Be the maximum rising step-length on the DPDCH that allows of system, r _DPDCHBe towards cell parameter.

In the method for power control provided by the invention, at RNC side execution in step a and b, at UE side execution in step c; Comprise further that in step b RNC is sent to the UE side with the HARQ power offset parameter that the MAC-d that calculates flows by signaling.

In the method for power control provided by the invention, the average Block Error Rate of statistics MAC-d described in step a stream comprises: add up the total number of MAC-es protocol Data Unit PDU of each MAC-d stream that receives in the described time cycle and the number of the MAC-es PDU that wherein makes a mistake respectively, the latter is obtained described average Block Error Rate divided by the former.

In the method for power control provided by the invention, comprise further that in step b judge the size of the HARQ power offset parameter that calculates: if greater than 6dB, then getting the HARQ power offset parameter is 6dB; If less than 0dB, then getting the HARQ power offset parameter is 0dB; If between 0 to 6dB, then get the Practical Calculation value of HARQ power offset parameter.

In the method for power provided by the invention control, calculate the power bias that each MAC-d flows relative E-DPDCH according to the HARQ power offset parameter described in the step c, be according to ${\mathrm{\β}}_{\mathrm{ed},\mathrm{ref},\mathrm{harq}}={\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}\×{10}^{\left(\frac{{\mathrm{\Δ}}_{\mathrm{harq}}}{20}\right)}$ Calculate, wherein β _{Ed, ref, harq}Expression MAC-d flows the power bias of relative E-DPDCH, HARQ Power Offset _j(m+1) the described HARQ power offset parameter of expression, Δ _Harq=HARQ Power Offset _j(m+1).

In the method for power provided by the invention control, in step b, further judge the size of the HARQ power offset parameter of the MAC-d stream that all MAC-d stream medium priorities are the highest: if between 0 to 6dB, execution in step c then; If greater than 6dB or less than 0dB, then further according to the HARQ power offset parameter calculating E-DPDCH of this MAC-d stream and the power bias parameter between the DPCCH, and this parameter is sent to UE, in step c, UE is further according to the transmitting power of this power bias parameter adjustment E-DPDCH.

In the method for power control provided by the invention, the described power bias parameter of calculating between E-DPDCH and the DPCCH according to the HARQ power offset parameter is:

If the HARQ power offset parameter is greater than 6dB,

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPowerOffse}{t}_i(m+1)-6}{20}};$

If the HARQ power offset parameter is less than 0dB,

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPowerOffse}{t}_i(m+1)}{20}},$

Wherein, HARQ Power Offset _j(m+1) expression HARQ power offset parameter, β _{Ed, ref}/ β _c(m+1) the power bias parameter between expression E-DPDCH and the DPCCH.

Based on above-mentioned purpose, the method for another power control provided by the invention is applied to adopt on the MAC-d stream of the E-DPDCH in the WCDMA system up-link of up enhancement techniques, may further comprise the steps:

A ', the average repeat time of each MAC-d stream in the statistics predetermined period of time is added up the Block Error Rate on the DPDCH in the above-mentioned time cycle;

B ' calculates DPCCH according to the desired value of the statistical value of the Block Error Rate on the above-mentioned DPDCH and the Block Error Rate that sets in advance and goes up the SIR adjusted value; According to the desired value of the number of retransmissions of the average repeat time of MAC-d stream and the MAC-d stream that sets in advance and the adjusted value that maximum retransmission calculates the HARQ power offset parameter of each MAC-d stream; The adjusted value of HARQ power offset parameter is added the HARQ power offset parameter of last one-period, and deduct upward SIR adjusted value of described DPCCH, obtain the HARQ power offset parameter of each MAC-d stream;

C ' calculates the power bias that each MAC-d flows relative E-DPDCH according to the HARQ power offset parameter that obtains among the step b ', and adjusts the transmitting power of the MAC-d stream of each E-DPDCH respectively according to result of calculation.

In the method for power provided by the invention control, the adjusted value of the HARQ power offset parameter described in the step b ' be according to $\frac{(\frac{N_{j,E-\mathrm{DPDCH},\mathrm{ave}}\left(m\right)}{N_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{(\frac{N_{j,E-\mathrm{DPDCH},\max }}{N_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}\×{\mathrm{UpStep}}_{j,E-\mathrm{DPDCH},\max }\×r_{j,E-\mathrm{DPDCH}}$ Calculate, wherein, j represents corresponding MAC-d stream; N _{J, E-DPDCH, target}Represent the desired value of the number of retransmissions of this MAC-d stream in the current described time cycle, if a plurality of MAC-d streams, then N are arranged _{J, E-DPDCH, target}Get the desired value of the number of retransmissions of the highest MAC-d stream of all MAC-d stream medium priorities; N _{J, E-DPDCH, max}Represent the maximum retransmission that this MAC-d stream is allowed, if a plurality of MAC-d streams, then N are arranged _{J, E-DPDCH, max}Get the maximum retransmission in all MAC-d streams; N _{J, E-DPDCH, ave}The average repeat time of representing this MAC-d stream; UpStep _{J, E-DPDCH, max}Maximum rising step-length on the expression E-DPDCH, r _{J, E-DPDCH}Be towards cell parameter, m represents the current described time cycle.

In the method for power provided by the invention control, the DPCCH described in the step b ' go up the SIR adjusted value be according to $\underset{n=m}{\overset{m+1}{\mathrm{\Σ}}}\frac{(\frac{{\mathrm{BLER}}_{\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{\mathrm{DPDCH},\max }\×r_{\mathrm{DPDCH}}$ Calculate, wherein, BLER _DPDCH(n) be the statistical value that DPDCH goes up Block Error Rate in the current described time cycle, BLER _{DPDCH, target}Be the desired value of Block Error Rate on the DPDCH that sets in advance, UpStep _{DPDCH, max}Be the maximum rising step-length on the DPDCH that allows of system, r _DPDCHBe towards cell parameter.

In the method for power control provided by the invention, at RNC side execution in step a ' and b ', at UE side execution in step c '; Comprise further that in step b ' RNC is sent to the UE side with the HARQ power offset parameter that the MAC-d that calculates flows by signaling.

In the method for power control provided by the invention, the average repeat time of statistics MAC-d described in the step a ' stream comprises: add up the number of retransmissions of MAC-esPDU of each MAC-d stream that receives in the described time cycle and the MAC-es PDU number of each MAC-d stream of receiving respectively, the former is obtained described average repeat time divided by the latter.

In the method for power control provided by the invention, comprise further that in step b ' judge the size of the HARQ power offset parameter that calculates: if greater than 6dB, then getting the HARQ power offset parameter is 6dB; If less than 0dB, then getting the HARQ power offset parameter is 0dB; If between 0 to 6dB, then get the Practical Calculation value of HARQ power offset parameter.

In the method for power provided by the invention control, calculate the power bias that each MAC-d flows relative E-DPDCH according to the HARQ power offset parameter described in the step c ', be according to ${\mathrm{\β}}_{\mathrm{ed},\mathrm{ref},\mathrm{harq}}={\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}\×{10}^{\left(\frac{{\mathrm{\Δ}}_{\mathrm{harq}}}{20}\right)}$ Calculate, wherein β _{Ed, ref, harq}Expression MAC-d flows the power bias of relative E-DPDCH, HARQPower Offset _j(m+1) the described HARQ power offset parameter of expression, Δ _Harq=HARQ Power Offset _j(m+1).

In the method for power provided by the invention control, in step b ', further judge the size of the HARQ power offset parameter of the MAC-d stream that all MAC-d stream medium priorities are the highest: if between 0 to 6dB, execution in step c ' then; If greater than 6dB or less than 0dB, then further according to the HARQ power offset parameter calculating E-DPDCH of this MAC-d stream and the power bias parameter between the DPCCH, and this parameter is sent to UE, in step c ', UE is further according to the transmitting power of this power bias parameter adjustment E-DPDCH.

In the method for power control provided by the invention, the described power bias parameter of calculating between E-DPDCH and the DPCCH according to the HARQ power offset parameter is:

If the HARQ power offset parameter is greater than 6dB,

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPowerOffse}{t}_i(m+1)-6}{20}};$

If the HARQ power offset parameter is less than 0dB,

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPowerOffse}{t}_i(m+1)}{20}},$

Wherein, HARQPower Offset _j(m+1) expression HARQ power offset parameter, β _{Ed, ref}/ β _c(m+1) the power bias parameter between expression E-DPDCH and the DPCCH.

From the above as can be seen, the method of power of the present invention control goes up Block Error Rate that system sets in advance according to DPDCH and E-DPDCH or the desired value of number of retransmissions is carried out power control, make Block Error Rate or number of retransmissions convergence target value set on the correlated channels, guaranteed the service quality of system; Simultaneously, because the Block Error Rate that this method sets in advance according to system or the desired value of number of retransmissions are adjusted transmitting power, can be so that the transmitting power of up link satisfy the integrated planning design of system, thus the interference between the user reduced effectively, improved the capacity of system; Control for the power on the E-DPDCH, when the rated output offset parameter, also considered because the influence that the power control on the DPDCH is brought, in calculating, deducted appropriate section, thereby the control of the power on DPDCH and the E-DPDCH is organically combined, make that the power control on the E-DPDCH is more reasonable; The invention provides power control, can select suitable Poewr control method, thereby satisfy the difference preference of operator according to the different requirements of system to time delay and throughput based on the MAC-d stream under Block Error Rate and two kinds of situations of repeating transmission number of times; In the present invention, the power control of MAC-d stream is not adjusted at each MAC-d flow point, thereby system can require to control respectively its transmitting power according to the error rate of each MAC-d stream.

Description of drawings

Fig. 1 is the spread spectrum schematic diagram of UE side uplink special physical channel in the Release6 version of WCDMA;

Fig. 2 is the processing schematic diagram of UTRAN side HSUPA user physical layer data in the Release6 version of WCDMA;

Fig. 3 is the frame structure schematic diagram of E-DCH uplink data frames;

Fig. 4 is the power control flow schematic diagram on the DPDCH among the present invention;

Fig. 5 among the present invention based on the schematic flow sheet of the power control of the MAC-d stream of Block Error Rate;

Fig. 6 among the present invention based on the schematic flow sheet of the power control of the MAC-d stream of average repeat time.

Embodiment

Poewr control method provided by the invention to adopting the WCDMA up-link power control of up enhancement techniques, is to control and realize by the DPDCH in the uplink special physical channel and E-DPDCH being carried out power.And the present invention organically combines the control of the power on DPDCH and the E-DPDCH, thereby reasonably controls the generation power of up link, the communication quality of business in the assurance system, the capacity of raising system.

Below in conjunction with the drawings and specific embodiments, at first the power control of the present invention on DPDCH is described.For the control of the power on the DPDCH, the present invention goes up professional actual block error rate BLER according to DPDCH _DPDCHThe block error probability desired value BLER that sets in advance with system _{DPDCH, target}, be updated periodically the desired value SIR of the signal interference ratio (SIR, Signal to Interference Ratio) of DPCCH _Target(n+1); Node B goes up actual estimated value and the desired value SIR of SIR according to DPCCH _{T arget}(n+1) comparative result, transmission power control commands are adjusted the transmitting power on the DPCCH to UE.Because have a fixing power bias between DPDCH and the DPCCH, promptly the difference of the transmitting power on DPDCH and the DPCCH is a fixed value, therefore, by the transmitting power of DPCCH being controlled the power control that can realize on the DPDCH.Fig. 4 is the power control flow schematic diagram on the DPDCH among the present invention, describes the step of this flow process in detail below in conjunction with Fig. 4:

400, the time cycle of the power control of a DPDCH is set, radio network controller (RNC, Radio Network Controller) adds up the number of the total data piece that receives on the DPDCH in this cycle and wrong data block, the latter is promptly obtained the block error rate BLER on the DPDCH in this cycle divided by the former _DPDCH(n), wherein, the size in this cycle can be determined according to requirement and concrete application scenarios that power is controlled speed;

401, the DPDCH that RNC sets in advance according to system goes up the block error probability desired value BLER of bearer service _{DPDCH, target}, upgrade the desired value SIR of the SIR of DPCCH according to formula (1) _Target(n+1), and by the Data Control frame with SIR _Target(n+1) be sent to Node B;

${\mathrm{SIR}}_{t\arg \mathrm{et}}(n+1)={\mathrm{SIR}}_{t\arg \mathrm{et}}\left(n\right)+\frac{(\frac{{\mathrm{BLER}}_{\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{\mathrm{DPDCH},\max }\×r_{\mathrm{DPDCH}}---\left(1\right)$

In the formula (1), be the adjusted value of DPCCH being gone up signal interference ratio SIR $\frac{(\frac{{\mathrm{BLER}}_{\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{\mathrm{DPDCH},\max }\×r_{\mathrm{DPDCH}}$ Add one-period sir target value SIR _Target(n) obtain upgrading back sir target value SIR _Target(n+1).Wherein, UpStep _{DPDCH, max}Be the maximum rising step-length on the DPDCH that allows of system, determine according to concrete application scenarios optimization; r _DPDCHBe towards cell parameter, determine according to system-level emulation and concrete wireless scene; N represents the power control period of SIR updated time; SIR _Target(n) desired value of expression signal interference ratio of last one-period promptly goes up the sir target value that one-period calculates according to formula (1), when calculating the sir target value according to formula (1) for the first time, and SIR _Target(n) can determine by the typical services of carrying in the representative channel environment being carried out emulation.

402, Node B goes up actual SIR estimated value by measuring and calculate DPCCH, and compares sir target value SIR _Target(n+1) with the SIR estimated value, according to comparative result, transmission power control commands is to UE; For example, when the SIR estimated value less than desired value SIR _Target(n+1) time, show that needs improve the sir value on the DPCCH, Node B can be by transmission power control commands to UE, and notice UE increases the transmitting power on the DPCCH; Otherwise, then order UE to reduce transmitting power on the DPCCH;

For the evaluation method of the SIR estimated value in the step 402, can obtain by the method estimation of prior art, for example can obtain the SIR estimated value by channel simulator Calculation Method of the prior art.

Step 403 after UE receives above-mentioned power control command, according to power control information wherein, increases or reduces transmitting power on the DPCCH.Wherein, UE increases or reduces the amplitude that DPCCH goes up transmitting power, and the step-length that promptly rises or decline step-length are to be determined by the step-length that system allows.

Owing to there is a fixing difference between the transmitting power on DPCCH and the DPDCH, so when the power on the DPCCH changes, identical change also takes place in DPDCH thereupon, thereby has realized the power control on the DPDCH by the transmitting power of adjusting on the DPCCH.

Control for the power on the E-DPDCH, the present invention does not carry out power control realization by E-DPDCH being gone up each MAC-d flow point: at first add up initial average Block Error Rate or average repeat time that E-DPDCH goes up each MAC-d stream of bearer service, and calculate the HARQ power offset parameter (HARQ Power Offset) of each MAC-d stream respectively; UE calculates power bias β between each MAC-d stream and the E-DPDCH according to HARQ Power Offset _{Ed, ref, harq}, and adjust E-DPDCH according to this power bias and go up the transmitting power that corresponding M AC-d flows.

The average Block Error Rate of the following MAC-d of explanation earlier stream and the statistical method of average repeat time.

Because each MAC-es PDU is reformulated a MAC-d PDU at the MAC-es layer,, can obtain average repeat time and average Block Error Rate that this MAC-d flows so pass through average repeat time and the average Block Error Rate of the MAC-es PDU of certain MAC-d stream of statistics.Fig. 3 is the frame structure schematic diagram of E-DCH uplink data frames, according to third generation partnership project (3GPP, Third Generation Partnership Projects) agreement 25.427 regulations, this frame carries each MAC-es PDU number of retransmissions N, i.e. " HARQ number of retransmissions N " shown in Fig. 3.When N equals 0, show that wrong piece does not appear in this MAC-es PDU when sending; And work as N greater than 0, and illustrate that the mistake piece appears in this MAC-es PDU, be retransmitted N time.So can add up average repeat time and the average Block Error Rate of the MAC-es PDU of certain MAC-d stream according to " HARQ number of retransmissions N ".Concrete, as follows at the average error rate and the average repeat time statistic processes of certain MAC-d stream:

Average repeat time: in the regular hour, total number of the MAC-es PDU of the number of retransmissions of the MAC-esPDU of this MAC-d stream that statistics receives and this MAC-d stream that receives, with the former divided by the latter be this MAC-d stream at during this period of time average repeat time.The big I of the time cycle here is configured according to the needs of power control speed.

Average Block Error Rate: in the regular hour, total number of the MAC-es PDU of this MAC-d stream that statistics receives and occurred the number of the MAC-es PDU that this wrong MAC-d flows is during this period of time average Block Error Rate with the latter divided by the former.The big I of the time cycle here is configured according to the needs of power control speed.

Below by for example top statistical method being described further, such as, in a time cycle, receive 3 MAC-es PDU that are numbered a, b, c of certain MAC-d stream altogether, wherein wrong piece does not appear in a, be number of retransmissions N=0, and b and c have all launched twice, have just respectively retransmitted once, i.e. number of retransmissions N=1, MAC-d flows so hereto, and its average repeat time is exactly (0+1+1)/3.And wrong data block occurs is b and c, so its average Block Error Rate is 2/3.

The present invention is for the power on E-DPDCH control, do not control and realizes by each MAC-d flow point being carried out power.The Poewr control method based on Block Error Rate is adopted in the power control of MAC-d stream usually, also can adopt the Poewr control method based on number of retransmissions.Under identical signal interference ratio condition, increase maximum retransmission and help improving throughput of system, but can increase user's time delay and the throughput that influences this user simultaneously.Therefore, if system does not consider the requirement of single user to time delay and throughput, the power control of MAC-d stream also can be adopted the Poewr control method based on number of retransmissions, so that the maximization of cell throughout.Be example with MAC-d stream j below, describe this two kinds of Poewr control methods in conjunction with the accompanying drawings respectively in detail, Fig. 5 among the present invention based on the schematic flow sheet of the power control of the MAC-d stream of Block Error Rate, as shown in Figure 5, this flow process may further comprise the steps:

Step 500 is provided with time cycle of the power control of MAC-d stream, and RNC adds up the average block error rate BLER of this MAC-d stream in this cycle _{J, E-DPDCH}(m); Add up the block error rate BLER on the DPDCH in this time cycle _DPDCH, wherein, the size in this cycle can be determined according to requirement and concrete application scenarios that power is controlled speed;

Step 501, RNC calculates DPCCH according to the desired value of the statistical value of the Block Error Rate on the above-mentioned DPDCH and the Block Error Rate that sets in advance and goes up the SIR adjusted value; RNC is according to BLER _{J, E-DPDCH}(m) and the BLER desired value BLER on the MAC-d stream j that sets in advance of system _{J, E-DPDCH, target}, upgrade the HARQ power offset parameter that this MAC-d flows, i.e. HARQ Power Offset according to formula (2) _j(m+1), and with updated H ARQ power offset parameter be sent to UE by signaling;

$\mathrm{HARQPowerOffse}{t}_j(m+1)=\mathrm{HARQPowerOffse}{t}_j\left(m\right)$

$+\frac{(\frac{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH}}\left(m\right)}{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{j,E-\mathrm{DPDCH},\max }\×r_{j,E-\mathrm{DPDCH}}$

$-\underset{n=m}{\overset{m+1}{\mathrm{\Σ}}}\frac{(\frac{{\mathrm{BLER}}_{\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{\mathrm{DPDCH},\max }\×r_{\mathrm{DPDCH}}---\left(2\right)$

Because when on DPDCH, carrying out power control, go up the sir target value transmitting power of DPCCH has been done corresponding adjustment according to DPCCH, and also exist the power bias of certain relation between E-DPDCH and the DPCCH, so when MAC-d stream carries out power control on to E-DPDCH, need to consider that DPDCH goes up the influence of power control.Therefore, in formula (2), increase last, be used to remove the influence that the control of DPDCH power brings.In the formula (2), $\frac{(\frac{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH}}\left(m\right)}{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{j,E-\mathrm{DPDCH},\max }\×r_{k,E-\mathrm{DPDCH}}$ The adjusted value of expression HARQ power offset parameter; $\underset{n=m}{\overset{m+1}{\mathrm{\Σ}}}\frac{(\frac{{\mathrm{BLER}}_{\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{\mathrm{DPDCH},\max }\×r_{\mathrm{DPDCH}}$ Be that DPCCH goes up signal interference ratio SIR adjusted value; J represents corresponding MAC-d stream; UpStep _{J, E-DPDCH, max}Maximum rising step-length on the E-DPDCH that the expression system allows is determined according to the application scenarios optimization of reality; r _{J, E-DPDCH}Be towards cell parameter, determine according to system-level emulation and concrete wireless scene; BLER _{J, E-DPDCH, target}It is the BLER desired value on the MAC-d stream j that sets in advance of system; M represents the time cycle of the adjustment MAC-d stream power control constantly of HARQ power offset parameter.The power offset parameter of HARQ Power Offset (m) expression MAC-d of last one-period stream, promptly go up the power offset parameter of the MAC-d stream that one-period calculates according to formula (2), for for the first time according to formula (2) rated output offset parameter the time, HARQ Power Offset (m) can determine by the typical services of carrying in the representative channel environment being carried out emulation.

Step 502, UE calculates the power bias β between MAC-d stream and the E-DPDCH according to the HARQ power offset parameter that receives _{Ed, ref, harq}, and according to β _{Ed, ref, harq}Adjust the transmitting power of this MAC-d stream, for example, can calculate β according to formula (3) _{Ed, ref, harq}

${\mathrm{\β}}_{\mathrm{ed},\mathrm{ref},\mathrm{harq}}={\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}\×{10}^{\left(\frac{{\mathrm{\Δ}}_{\mathrm{harq}}}{20}\right)}---\left(3\right)$

Δ wherein _Harq=HARQ Power Offset _j(m+1)

Basic identical based on the Poewr control method of the MAC-d of average repeat time stream with method based on the MAC-d stream of Block Error Rate, just when computed HARQ power offset parameter HARQ Power Offset, determine by average repeat time, Fig. 6 among the present invention based on the schematic flow sheet of the power control of the MAC-d stream of average repeat time, as shown in Figure 6, this flow process may further comprise the steps:

600, time cycle of the power control of MAC-d stream is set, RNC adds up the average repeat time N of this MAC-d stream in this cycle _{J, E-DPDCH, ave}, wherein, the size in this cycle can be determined according to requirement and concrete application scenarios that power is controlled speed; Add up the block error rate BLER on the DPDCH in this time cycle _DPDCH

601, RNC calculates DPCCH according to the desired value of the statistical value of the Block Error Rate on the above-mentioned DPDCH and the Block Error Rate that sets in advance and goes up the SIR adjusted value; RNC is according to N _{J, E-DCDCH, ave}With the maximum retransmission N on this MAC-d stream j of being allowed of setting in advance of system _{J, E-DPDCH, max}, calculate the HARQ Power Offset that this MAC-d after upgrading flows according to formula (4) _j(m+1), and with updated H ARQ Power Offset _j(m+1) be sent to UE by signaling;

HARQ?Power?Offset _j(m+1)＝HARQ?Power?Offset _j(m)

$+\frac{(\frac{N_{j,E-\mathrm{DPDCH},\mathrm{ave}}\left(m\right)}{N_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{(\frac{N_{j,E-\mathrm{DPDCH},\max }}{N_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}\×{\mathrm{UpStep}}_{j,E-\mathrm{DPDCH},\max }\×r_{j,E-\mathrm{DPDCH}}$

$-\underset{n=m}{\overset{m+1}{\mathrm{\Σ}}}\frac{(\frac{{\mathrm{BLER}}_{\mathrm{DPDCH}}\left(n\right)}{{\mathrm{BLER}}_{\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{\mathrm{DPDCH},\mathrm{tatget}}}-1}\×{\mathrm{UpStep}}_{\mathrm{DPDCH},\max }\×r_{\mathrm{DPDCH}}---\left(4\right)$

Same, in formula (4), also increased last, be used to remove the influence that the control of DPDCH power brings.In the formula (4), $\frac{(\frac{N_{j,E-\mathrm{DPDCH},\mathrm{ave}}\left(m\right)}{N_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{(\frac{N_{j,E-\mathrm{DPDCH},\max }}{N_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}\×{\mathrm{UpStep}}_{j,E-\mathrm{DPDCH},\max }\×r_{j,E-\mathrm{DPDCH}}$ The adjusted value of expression HARQ power offset parameter; N _{J, E-DPDCH, target}Be the desired value of the number of retransmissions of system's expection, can be configured as parameters such as time delay, cell throughout according to traffic performance; N _{J, E-DPDCH, max}This MAC-d that is system's setting flows the maximum retransmission that is allowed; N _{J, E-DPDCH, ave}Be actual average repeat time, obtain by system statistics.If a plurality of MAC-d streams are arranged, then N _{J, E-DPDCH, target}Get the desired value of the number of retransmissions of the highest MAC-d stream of all MAC-d stream medium priorities, N _{J, E-DPDCH, max}Get maximum maximum retransmission in all MAC-d streams.Generally, N _{J, E-DPDCH, target}Should be less than N _{J, E-DPDCH, max}

602, UE calculates β according to the HARQ power offset parameter HARQ Power Offset that receives by formula (3) _{Ed, ref, harq}, according to β _{Ed, ref, harq}Adjust the transmitting power of this MAC-d stream.

Regulation according to agreement 3GPP 25.214, the dynamic range of the HARQ power offset parameter of MAC-d stream is 0～6dB, so in step b0 and b1, further the result of calculation of described HARQ power offset parameter is judged: if do not exceed above-mentioned scope according to formula (2) or (4) result calculated, promptly smaller or equal to 6dB and more than or equal to 0dB, then getting the HARQ power offset parameter is the Practical Calculation value; If surpass above-mentioned scope, then when HARQ power offset parameter during greater than 6dB, getting the HARQ power offset parameter is 6dB, and when HARQ power offset parameter during less than 0dB, getting the HARQ power offset parameter is 0dB.By the Poewr control method on the above-mentioned MAC-d stream, promptly can realize controlling based on the power on the MAC-d stream of Block Error Rate and number of retransmissions.

In power control to MAC-d stream, satisfy the scope of 0～6dB of agreement defined in order to make updated H ARQ power offset parameter as far as possible, the present invention is further to the power bias parameter beta between E-DPDCH and the DPCCH _{Ed, ref}/ β _cUpgrade: in step 501 or step 601, judge that further E-DPDCH goes up the size of the HARQ power offset parameter of the highest MAC-d stream of all MAC-d stream medium priorities, if do not exceed above-mentioned scope, then execution in step 502 or step 602; If exceed above-mentioned scope, then in step 501 or step 601 further to β _{Ed, ref}/ β _cUpgrade, and the β after will upgrading _{Ed, ref}/ β _cBe sent to UE, in step 502 or 602, UE is further according to the β after upgrading _{Ed, ref}/ β _cAdjust the transmitting power on the E-DPDCH.Wherein, β _{Ed, ref}/ β _cRenewal calculate according to formula (5) or (6): 1) if HARQ Power Offset _i(m+1) greater than 6dB, β then _{Ed, ref}/ β _cUpgrade according to formula (5):

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPowerOffse}{t}_i(m+1)-6}{20}}---\left(5\right)$

2) if HARQ Power is Offset _i(m+1) less than 0dB, β then _{Ed, ref}/ β _cUpgrade according to formula (6):

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPowerOffse}{t}_i(m+1)}{20}}---\left(6\right)$

Wherein,

Power bias parameter before expression is upgraded between E-DPDCH and the DPCCH; HARQ Power Offset _iThe HARQ power offset parameter of the MAC-d stream that (m+1) expression priority is the highest.

The method of carrying out power control on the DPDCH of the present invention's up link in the WCDMA system and the E-DPDCH channel below has been described respectively.The inventive method is to go up Block Error Rate that system sets in advance or the desired value of number of retransmissions is carried out power control according to DPDCH and E-DPDCH, thereby make Block Error Rate or number of retransmissions convergence target value set on the correlated channels, guaranteed the service quality of system; Simultaneously, since this method according to system in advance Block Error Rate or the desired value of number of retransmissions adjust transmitting power, can be so that the transmitting power of up link satisfy the integrated planning design of system, thus the interference between the user effectively reduced, improved the capacity of system; Control for the power on the E-DPDCH, when the rated output offset parameter, also considered because the influence that the power control on the DPDCH is brought, in calculating, deducted appropriate section, thereby the control of the power on DPDCH and the E-DPDCH is organically combined, make that the power control on the E-DPDCH is more reasonable; The invention provides power control, can select suitable Poewr control method, thereby satisfy the difference preference of operator according to the different requirements of system to time delay and throughput based on the MAC-d stream under Block Error Rate and two kinds of situations of repeating transmission number of times; In the present invention, the power control of MAC-d stream is not adjusted at each MAC-d flow point, thereby system can require to control respectively its transmitting power according to the error rate of each MAC-d stream.

Claims (21)

1. Poewr control method is applied to adopt on the Dedicated Physical Data Channel (DPDCH) in Wideband Code Division Multiple Access (WCDMA) (WCDMA) system up-link of up enhancement techniques, it is characterized in that may further comprise the steps:

A, the Block Error Rate in the statistics predetermined period of time on the DPDCH;

B goes up the desired value of Block Error Rate and calculates upward signal interference ratio (SIR) adjusted value of Dedicated Physical Control Channel (DPCCH) according to steps A Block Error Rate that obtains and the DPDCH that sets in advance; Above-mentioned SIR adjusted value is added sir target value after a last cycle time sir target value obtains upgrading;

C, sir target value after the renewal that step B is obtained and the SIR estimated value on the DPCCH are compared, and adjust the size of the transmitting power on the DPCCH in the up link according to comparative result; Power according to the described DPDCH of the biasing of the constant power between the transmitting power of described DPDCH and DPCCH control.

2. method according to claim 1 is characterized in that, the SIR adjusted value described in the step B be according to Calculate, wherein, BLER _DPDCH(n) be the statistical value that DPDCH goes up Block Error Rate in the current described time cycle, BLER _{DPDCH, target}Be the desired value of Block Error Rate on the DPDCH that sets in advance, UpStep _{DPDCH, max}Be the maximum rising step-length on the DPDCH that is provided with of system, r _DPDCHBe towards cell parameter, n represents the current described time cycle.

3. method according to claim 1 is characterized in that, locates execution in step A and step B at radio network controller (RNC);

Further comprise in step B: the sir target value after RNC will upgrade by the Data Control frame is sent to base station (Node B);

In step C, further comprise: sir target value after Node B relatively upgrades and SIR estimated value, locate according to comparative result transmission power control commands to subscriber equipment (UE); UE adjusts the size of the transmitting power on the DPCCH according to power control command.

4. method according to claim 1 is characterized in that, the statistics of error rate described in the steps A comprises: add up the total data piece that receives on the DPDCH in the described time cycle and the number of error block, the latter is obtained described Block Error Rate divided by the former.

5. method according to claim 1, it is characterized in that, transmitting power on the adjustment DPCCH described in the step C comprises: the rising step-length that is provided with according to system increases the transmitting power on the DPCCH, or reduces transmitting power on the DPCCH according to the decline step-length of system's setting.

6. Poewr control method is applied to adopt on the MAC-d stream of the enhancing Dedicated Physical Data Channel (E-DPDCH) in the WCDMA system up-link of up enhancement techniques, it is characterized in that may further comprise the steps:

A adds up the average Block Error Rate that each MAC-d flows in the predetermined period of time respectively, adds up the Block Error Rate on the DPDCH in the above-mentioned time cycle;

B calculates DPCCH according to the desired value of the statistical value of the Block Error Rate on the above-mentioned DPDCH and the Block Error Rate that sets in advance and goes up the SIR adjusted value; Calculate the adjusted value of the automatic repeat requests of mixing (HARQ) power offset parameter of each MAC-d stream respectively according to the block error probability desired value of the average Block Error Rate of each MAC-d stream and each MAC-d stream of setting in advance; The adjusted value of HARQ power offset parameter is added the HARQ power offset parameter of last one-period, and deduct upward SIR adjusted value of described DPCCH, obtain the HARQ power offset parameter of each MAC-d stream;

C calculates the power bias that each MAC-d flows relative E-DPDCH according to the HARQ power offset parameter that obtains among the step b, and adjusts the transmitting power of the MAC-d stream of each up E-DPDCH respectively according to result of calculation;

Wherein, calculate the power bias that each MAC-d flows relative E-DPDCH according to the HARQ power offset parameter described in the step c, be according to

Calculate, wherein β _{Ed, ref, harq}Expression MAC-d flows the power bias of relative E-DPDCH, HARQ Power Offset _j(m+1) the described HARQ power offset parameter of expression, Δ _Harq=HARQ Power Offset _j(m+1).

7. method according to claim 6 is characterized in that, the adjusted value of the HARQ power offset parameter described in the step b be according to

$\frac{(\frac{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH}}\left(m\right)}{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1)}{\frac{1}{{\mathrm{BLER}}_{j,E-\mathrm{DPDCH},t\arg \mathrm{et}}}-1}\×{\mathrm{UpStep}}_{j,E-\mathrm{DPDCH},\max }\×r_{j,E-\mathrm{DPDCH}}$

Calculate, wherein, j represents corresponding MAC-d stream, BLER _{J, E-DPDCH}(m) the average Block Error Rate of MAC-d stream in the current described time cycle of expression, BLER _{J, E-DPDCH, target}The desired value of the Block Error Rate of expression MAC-d stream, UpStep _{J, E-DPDCH, max}Maximum rising step-length on the expression E-DPDCH, r _{J, E-DPDCH}Be towards cell parameter, m represents the current described time cycle.

8. method according to claim 6 is characterized in that, the DPCCH described in the step b go up the SIR adjusted value be according to

Calculate, wherein, BLER _DPDCH(n) be the statistical value that DPDCH goes up Block Error Rate in the current described time cycle, BLER _{DPDCH, target}Be the desired value of Block Error Rate on the DPDCH that sets in advance, UpStep _{DPDCH, max}Be the maximum rising step-length on the DPDCH that allows of system, r _DPDCHBe towards cell parameter, m represents the time cycle of the adjustment MAC-d stream power control constantly of HARQ power offset parameter.

9. method according to claim 6 is characterized in that, at RNC side execution in step a and b, at UE side execution in step c; Comprise further that in step b RNC is sent to the UE side with the HARQ power offset parameter that the MAC-d that calculates flows by signaling.

10. method according to claim 6, it is characterized in that, the average Block Error Rate of statistics MAC-d described in step a stream comprises: add up total number of MAC-es protocol Data Unit (PDU) of each MAC-d stream that receives in the described time cycle and the number of the MAC-esPDU that wherein makes a mistake respectively, the latter is obtained described average Block Error Rate divided by the former.

11. method according to claim 6 is characterized in that, further comprises in step b, judge the size of the HARQ power offset parameter that calculates: if greater than 6dB, then getting the HARQ power offset parameter is 6dB; If less than 0dB, then getting the HARQ power offset parameter is 0dB; If between 0 to 6dB, then get the Practical Calculation value of HARQ power offset parameter.

12. according to each described method of claim 6 to 11, it is characterized in that, in step b, further judge the size of the HARQ power offset parameter of the MAC-d stream that all MAC-d stream medium priorities are the highest: if between 0 to 6dB, execution in step c then; If greater than 6dB or less than 0dB, then further according to the HARQ power offset parameter calculating E-DPDCH of this MAC-d stream and the power bias parameter between the DPCCH, and this parameter is sent to UE, in step c, UE is further according to the transmitting power of this power bias parameter adjustment E-DPDCH.

13. method according to claim 12 is characterized in that, the described power bias parameter of calculating between E-DPDCH and the DPCCH according to the HARQ power offset parameter is:

If the HARQ power offset parameter is greater than 6dB,

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPower}{\mathrm{Offset}}_i(m+1)-6}{20}};$

If the HARQ power offset parameter is less than 0dB,

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPower}{\mathrm{Offset}}_i(m+1)}{20}},$

Wherein, HARQ Power Offset _iThe HARQ power offset parameter of the MAC-d stream that (m+1) expression priority is the highest,

Power bias parameter between expression E-DPDCH and the DPCCH.

14. a Poewr control method is applied to adopt on the MAC-d stream of the E-DPDCH in the WCDMA system up-link of up enhancement techniques, it is characterized in that may further comprise the steps:

A ', the average repeat time of each MAC-d stream in the statistics predetermined period of time is added up the Block Error Rate on the DPDCH in the above-mentioned time cycle;

B ' calculates DPCCH according to the desired value of the statistical value of the Block Error Rate on the above-mentioned DPDCH and the Block Error Rate that sets in advance and goes up the SIR adjusted value; According to the desired value of the number of retransmissions of the average repeat time of MAC-d stream and the MAC-d stream that sets in advance and the adjusted value that maximum retransmission calculates the HARQ power offset parameter of each MAC-d stream; The adjusted value of HARQ power offset parameter is added the HARQ power offset parameter of last one-period, and deduct upward SIR adjusted value of described DPCCH, obtain the HARQ power offset parameter of each MAC-d stream;

C ' calculates the power bias that each MAC-d flows relative E-DPDCH according to the HARQ power offset parameter that obtains among the step b ', and adjusts the transmitting power of the MAC-d stream of each E-DPDCH respectively according to result of calculation;

Wherein, calculate the power bias that each MAC-d flows relative E-DPDCH according to the HARQ power offset parameter described in the step c ', be according to

Calculate, wherein β _{Ed, ref, harq}Expression MAC-d flows the power bias of relative E-DPDCH, Δ _Harq=HARQ Power Offset _j(m+1), wherein, HARQ Power Offset _j(m+1) the HARQ power offset parameter of the MAC-d stream that obtains among the expression step b '.

15. method according to claim 14 is characterized in that, the adjusted value of the HARQ power offset parameter described in the step b ' be according to

Calculate, wherein, j represents corresponding MAC-d stream; N _{J, E-DPDCH, target}Represent the desired value of the number of retransmissions of this MAC-d stream in the current described time cycle, if a plurality of MAC-d streams, then N are arranged _{J, E-DPDCH, target}Get the desired value of the number of retransmissions of the highest MAC-d stream of all MAC-d stream medium priorities; N _{JE-DPDCH, max}Represent the maximum retransmission that this MAC-d stream is allowed, if a plurality of MAC-d streams, then N are arranged _{J, E-DPDCH, max}Get maximum maximum retransmission in all MAC-d streams; N _{J, E-DPDCH, ave}The average repeat time of representing this MAC-d stream; UpStep _{J, E-DPDCH, max}Maximum rising step-length on the expression E-DPDCH, r _{J, E-DPDCH}Be towards cell parameter, m represents the current described time cycle.

16. method according to claim 14 is characterized in that, the DPCCH described in the step b ' go up the SIR adjusted value be according to

Calculate, wherein, BLER _DPDCH(n) be the statistical value that DPDCH goes up Block Error Rate in the current described time cycle, BLER _{DPDCH, target}Be the desired value of Block Error Rate on the DPDCH that sets in advance, UpStep _{DPDCH, max}Be the maximum rising step-length on the DPDCH that allows of system, r _DPDCHBe towards cell parameter; M represents the time cycle of the adjustment MAC-d stream power control constantly of HARQ power offset parameter.

17. method according to claim 14 is characterized in that, at RNC side execution in step a ' and b ', at UE side execution in step c '; Comprise further that in step b ' RNC is sent to the UE side with the HARQ power offset parameter that the MAC-d that calculates flows by signaling.

18. method according to claim 14, it is characterized in that, the average repeat time of statistics MAC-d described in the step a ' stream comprises: add up the number of retransmissions of MAC-es PDU of each MAC-d stream that receives in the described time cycle and the MAC-es PDU number of each MAC-d stream of receiving respectively, the former is obtained described average repeat time divided by the latter.

19. method according to claim 14 is characterized in that, further comprises in step b ', judge the size of the HARQ power offset parameter that calculates: if greater than 6dB, then getting the HARQ power offset parameter is 6dB; If less than 0dB, then getting the HARQ power offset parameter is 0dB; If between 0 to 6dB, then get the Practical Calculation value of HARQ power offset parameter.

20. according to each described method of claim 14 to 19, it is characterized in that, in step b ', further judge the size of the HARQ power offset parameter of the MAC-d stream that all MAC-d stream medium priorities are the highest: if between 0 to 6dB, execution in step c ' then; If greater than 6dB or less than 0dB, then further according to the HARQ power offset parameter calculating E-DPDCH of this MAC-d stream and the power bias parameter between the DPCCH, and this parameter is sent to UE, in step c ', UE is further according to the transmitting power of this power bias parameter adjustment E-DPDCH.

21. method according to claim 20 is characterized in that, the described power bias parameter of calculating between E-DPDCH and the DPCCH according to the HARQ power offset parameter is:

If the HARQ power offset parameter is greater than 6dB,

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPower}{\mathrm{Offset}}_i(m+1)-6}{20}};$

If the HARQ power offset parameter is less than 0dB,

$\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}(m+1)=\frac{{\mathrm{\β}}_{\mathrm{ed},\mathrm{ref}}}{{\mathrm{\β}}_c}\left(m\right)\×{10}^{\frac{\mathrm{HARQPower}{\mathrm{Offset}}_i(m+1)}{20}},$

Wherein, HARQ Power Offset _iThe HARQ power offset parameter of the MAC-d stream that (m+1) expression priority is the highest,

Power bias parameter between expression E-DPDCH and the DPCCH.

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