CN1841958B - Method and apparatus for realizing uplink outer-loop power control in mobile communication system - Google Patents
Method and apparatus for realizing uplink outer-loop power control in mobile communication system Download PDFInfo
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Abstract
The invention discloses a method and device for achieving upward external ring work control of the moving communicating system. The method stores the object SIR and the corresponding threshold quantity in the base station, which comprises: A. the base station measures the frame quality of each transmitting channel and adjusts the object SIR, and then ascertains the object SIR of the correspondingphysics channel; B. it obtains the different value of the object SIR and the wireless net controller (RNC) object SIR; C. it quotes whether the different value is over the threshold quantity, if yes,it makes the object SIR of the base station as upward external ring work control last object SIR; if not, it makes the wireless net controller (RNC) object SI as upward external ring work control last object SIR. The device comprises an upward decoding module and a control module, wherein the upward decoding module is used to detect the frame quality information; the control module dose the external ring work control object SIR quoting by the detected frame quality information.
Description
Technical field
The present invention relates to the power control techniques of mobile communcations system, relate in particular to a kind of method and apparatus of in Wideband Code Division Multiple Access (WCDMA) (WCDMA) communication system, realizing ascending exterior ring power control.
Background technology
At present wireless telecommunication system, especially in the WCDMA system, power control is one of key technology.Power control is called for short power control, and power control can divide two big classes: inner-loop power control and external circule power control.Wherein, the main effect of inner-loop power control is to make received signal to noise ratio (SIR, Signal-to-Interference Ratio) converge on target SIR by the transmitting power of controlling physical channel; External circule power control is a target SIR of dynamically adjusting inner-loop power control, communication quality is met the demands all the time, promptly reach Block Error Rate (BLER, Block Error Ratio), the frame error rate (FER of regulation, Frame Error Ratio) or bit error rate (BER, Bit Error Ratio).
Why needing to adjust target SIR by external circule power control, is because the complexity of wireless channel is only carried out power control according to sir value and can not really be reacted link-quality.Such as: for stationary user, rate travel is that low speed user and the rate travel of 3kM/H is the highspeed user of 50kM/H, on the basis that guarantees identical BLER/FER/BER, is different to the requirement of SIR.Yet final communication quality is to weigh by BLER/FER/BER, and the SIR of BLER/FER/BER and receiving end signal is related, and SIR is good more, and BLER is low more.Therefore be necessary dynamically to adjust target SIR according to the FER/BLER/BER value of reality.In uplink external ring power control, described receiving terminal is meant base station (NodeB).
In the prior art, the uplink external ring power control of communication system mainly carries out in radio network controller (RNC), and Fig. 1 realizes the basic block diagram of ascending exterior ring power control for RNC.As shown in Figure 1, on RNC, store the mapping relations of up target BLER/FER/BER value, target SIR and BLER/FER/BER difference and target SIR difference in advance.After RNC begins uplink external ring power control, at first measure BLER/FER/BER, promptly receive and BLER measured value that definite NodeB dynamically reports; Determine the difference of BLER/FER/BER measured value and target BLER/FER/BER then; Then determine the target SIR difference according to the mapping relations of BLER/FER/BER difference and target SIR difference, for example: if the difference of BLER/FER/BER measured value and target BLER is greater than 0, then the target SIR difference is predetermined forward step-length, if the difference of BLER measured value and target BLER is less than 0, then the target SIR difference is predetermined negative sense step-length; At last according to target SIR difference revise goal SIR, for example, if the target SIR difference is predetermined forward step-length, improve pre-determined step-length of target SIR, if the target SIR difference is predetermined negative sense step-length, then reduce pre-determined step-length of target SIR.In addition, in the process of revise goal SIR, can not exceed the normal span of target SIR.In the uplink power control, the span of target SIR can be with reference to 3GPP TS 25.433 agreements, and its span is-8.2dB～17.3DB.
It is described that the target SIR of storage is definite by the basic demand of quality of service in advance in RNC.In order to satisfy the basic demand of quality of service, need reach certain service quality (QOS), promptly up BLER/FER/BER need reach certain requirement.Corresponding with it, up receiving terminal, i.e. the ratio E of the bit energy of base station and interference power spectrum density
b/ N
0Need satisfy certain requirement.E
b/ N
0Also relevant with the foreign channels environment of communication system, E in Gaussian channel and fading channel for example
b/ N
0Be discrepant.Following table 1 is the performance requirement under the disclosed Gaussian channel in 3GPP TS 25.141 agreements:
| Service rate (Measurement channel data rate (R b)) | When BLER less than 0.1 the time, E b/N 0Value (E b/N 0for required BLER＜10 -1) | When BLER less than 0.01 the time, E b/N 0Value (E b/N 0for required BLER＜10 -2) |
| 12.2kbps | No value | 5.1dB |
| 64kbps | 1.5dB | 1.7dB |
| 144kbps | 0.8dB | 0.9dB |
| 384kbps | 0.9dB | 1.0dB |
Table 1
As shown in table 1: E
b/ N
0Relevant with relation and the service rate of BLER, under identical service rate, the standard difference that BLER reached, E
b/ N
0Value also different.
In order to satisfy the basic demand of quality of service, target SIR can be according to following formula 1) determine:
Above-mentioned formula 1) in, SIR is the target SIR that satisfies the quality of service basic demand; W is a spreading rate, and value is 3.84Mbps; R
DCH UserBe service rate; β
cAnd β
dBe respectively the gain factor of Dedicated Physical Control Channel (DPCCH) and Dedicated Physical Data Channel (DPDCH); SF
DPCCHBe spreading factor, its value is fixed, and is 256; AntNum is the number of antenna for base station.
Be that the business of 12.2kbps and antenna for base station number are 2 to be example with the service rate: supposition β
cAnd β
dBe respectively 11 and 15, according to above-mentioned formula 1), BLER less than the target SIR value under 0.01 situation is so: target SIR=5.1+10*log (256*2)-10*log (3840/12.2) one 10*log (1+ (15/11) ^2)=5.1+27.1-25-4.56=2.55dB.The business of other speed can be by that analogy.
In the process of uplink external ring power control, up decoding module among the NodeB reports RNC with BLER/FEE/BER information, RNC can dynamically adjust target SIR according to the actual BLER/FER/BER value of information that reports of NodeB, and in each uplink external ring power control cycle revised target SIR value is handed down to NodeB by the IUB interface.After NodeB receives the target SIR that RNC issues, target SIR is directly disposed the uplink demodulation module of giving self, adjust the uplink demodulation module with this and carry out the used target SIR of inner-loop power control, the uplink demodulation module is carried out inner-loop power control according to this target SIR.
But, in above-mentioned existing uplink external ring power control method, in case the IUB interface occurs unusual, then can cause the external circule power control order promptly to abandon to the revision target SIR that NodeB issues, be easy to cause the value of physical channel target SIR too low or too high, because the external circule power control cycle may be long, cause the inner-loop power control of NodeB to control the transmitting power of portable terminal (UE) low or too high so again, cross to hang down and uplink loss or call drop problem to occur, the reduction communication quality; The too high uplink interference that will cause increases, and reduces systematic function.
In addition, because RNC is thorough inadequately for the external circule power control under certain service conditions, for example RNC only carries out the correction of target SIR at certain transmission channel in the physical channel, causes the transmitting power of other transmission channels to can not get correct adjustment, and communication quality is reduced.For example: when RNC only carries out the target SIR correction at Traffic Channel, if the PS business of free of data transmission takes place, the BLER of Traffic Channel is always 0, therefore system reduces the transmitting power of UE, must cause target SIR low excessively so, thereby the quality that causes receiving signaling-information reduces, and makes the BLER of signaling moiety significantly increase.
Summary of the invention
In view of this, main purpose of the present invention provides the method and apparatus of realizing uplink external ring power control in a kind of mobile communcations system, thereby avoids the target SIR of external circule power control to control too high or too lowly.
In order to realize the foregoing invention purpose, technical scheme of the present invention is:
Realize the method for uplink external ring power control in a kind of mobile communcations system, be applicable to the uplink external ring power control of mobile communcations system physical channel, this method is determined in the base station and the target signal to noise ratio SIR of storage physical channel and the threshold value of this target SIR correspondence in advance, in the base station, store the target signal to noise ratio SIR of each transmission channel that physical channel shone upon in advance, and comprise:
The frame quality of each transmission channel that A, base station measurement physical channel are shone upon; At each transmission channel,, go up or adjust down the target SIR of described each transmission channel according to the difference of measured frame quality or excellent; Determine the target SIR of corresponding physical channel according to the target SIR of adjusted each transmission channel; And receive the target SIR of this physical channel that radio network controller (RNC) issues recently;
B, base station obtain the target SIR of the described physical channel of self determining and the difference that described RNC issues the target SIR of this physical channel recently;
Whether the difference that C, base station determining step B are obtained surpasses the described threshold value of storage in advance, if, then will be described the target SIR of self definite physical channel as the final goal SIR of described physical channel uplink external ring power control; Otherwise the target SIR of this physical channel that described RNC is issued recently is as the final goal SIR of this physical channel uplink external ring power control.
Preferably, the target error rate of described base station each transmission channel of storing described physical channel in advance and being shone upon; And in the steps A, the detailed process of described base station measurement transmission channel frame quality comprises:
The error code number of A1, base station measurement and the transmission channel receiving data frames that adds up and total sign indicating number number;
A2, with the error code number divided by total sign indicating number number, the error rate of the ratio that obtains for measuring; The error rate that compares and measures and the target error rate of storage, if the error rate of measuring is less than the target error rate of storage, then the frame quality of this transmission channel is more excellent, if the error rate of measuring greater than the target error rate of storage, then the frame of this transmission channel is second-rate.
Preferably, after above-mentioned steps A1, before the steps A 2, further comprise:
Judge whether measured Frame reaches predetermined number, if, execution in step A2 then, otherwise, steps A 1 returned.
Preferably, the concrete grammar that described base station is stored described target error rate in advance is: RNC sends the target error rate of each transmission channel that described physical channel shines upon to described base station, and the target error rate that the back storage is received is received in the base station.
The described error rate is a Block Error Rate, and described number of bit errors is mistake piece number, and described gross yards is a total block data;
Perhaps, the described error rate is a frame error rate, and described number of bit errors is the mistake frame number, and described gross yards is a totalframes;
Perhaps, the described error rate is a bit error rate, and described number of bit errors is the errored bit number, and described gross yards is total bit number.
Preferably, in the steps A, described target SIR according to adjusted each transmission channel determines that the concrete grammar of the target SIR of corresponding physical channel is;
In the target SIR of described each transmission channel, get a maximum target SIR as described physical channel.
Preferably, in the steps A, described target SIR according to adjusted each transmission channel determines that the concrete grammar of the target SIR of corresponding physical channel is;
In the target SIR of described each transmission channel, get the target SIR of a mean value as described physical channel.
Preferably, the target SIR of the described physical channel that described RNC issues recently is: the target SIR of this physical channel of RNC external circule power control configuration perhaps is the target SIR of this physical channel of obtaining in the RNC radio link reconfiguration.
Preferably, described mobile communcations system is the Wideband Code Division Multiple Access (WCDMA) communication system.
Realize the device of uplink external ring power control in a kind of mobile communcations system, this device is arranged in the base station, comprises up decoding module and control module, wherein:
Up decoding module is used for the frame data stream of base stations detected data/address bus, reports the frame quality information of each transmission channel that detected physical channel shines upon to control module;
Store the target SIR of physical channel and the threshold value of this target SIR correspondence in the control module in advance, in the base station, store the target signal to noise ratio SIR of each transmission channel that physical channel shone upon in advance, this control module is used for by receiving and the frame quality information of each transmission channel of reporting of row decoding module analytically, adjust the target SIR of described each transmission channel, utilize the target SIR of adjusted each transmission channel to determine the target SIR of corresponding physical channel; Obtain the difference that this target SIR and RNC are handed down to the target SIR of base station recently again, if this difference is greater than described threshold value, then that self is definite target SIR sends to the uplink demodulation module as the final goal sir value of uplink external ring power control with this target SIR value; Otherwise the target SIR that RNC is issued recently sends to the uplink demodulation module as the final goal sir value of uplink external ring power control with this target SIR value.
Beneficial effect of the present invention comprises:
1, because the present invention has increased control module in the base station, frame quality by base stations detected self is determined target SIR, the target SIR that issues with RNC compares again, in case the target SIR that RNC issues is too high or low excessively, then that self is definite target SIR is as the final goal SIR of external circule power control.Thereby avoid because the IUB interface when causing the target SIR command information to be lost unusually, makes target SIR control too high or too lowly, concrete, can avoid target SIR to cross uplink loss or the call drop problem that occurs when low; The uplink interference that causes in the time of can avoiding target SIR too high increases problem.Thereby ring controls to the UE transmitting power normally in making, and improves communication quality and systematic function.
2, owing to the present invention detects and analyzes the target SIR of all transmission channels that physical channel shone upon, and comprehensively the target SIR of each transmission channel is determined the target SIR of physical channel, select the maximum of each transmission channel target SIR or mean value target SIR, therefore can avoid RNC and the problem that cause communication quality reduce thorough inadequately for certain service conditions external circule power control as physical channel.
For example, if select the target SIR of the maximum of each transmission channel target SIR as physical channel, then this method overcome composite service RNC uplink external ring power control under certain conditions certain professional BLER may exceed the defective of BLER desired value, taken all factors into consideration each professional BLER in the composite service.By the method, one of them business convergence in can the control combination business is in its target BLER, i.e. fluctuation around target BLER, and other business then is better than its target BLER, thereby avoids the generation of the chain rupture phenomenon that causes because of uplink external ring power control.
Again for example, the present invention also can avoid packet switching in free of data transmission (PS, when PacketSwitched) professional, the excessive situation of the BLER of signaling channel takes place.Because the BLER of Traffic Channel and signaling channel is different, usually the target BLER of PS business is about 5%, the target BLER of signaling is about 1%, when the PS that carries out the free of data transmission is professional, the BLER of Traffic Channel is always 0, but carries out power control owing to only abide by Traffic Channel in the prior art, must cause target SIR low excessively so, cause the BLER of signaling channel significantly to increase, reduce communication quality.Yet the present invention determines target SIR by the BLER that judges all transmission channels, thereby can guarantee each propagation channel quality demand.
Description of drawings
Fig. 1 is the basic block diagram that RNC realizes external circule power control in the prior art;
Fig. 2 is the structure drawing of device of realization ascending exterior ring power control of the present invention;
Fig. 3 is the flow chart of a kind of embodiment of realization uplink external ring power control method of the present invention.
Embodiment
Further specify implementation method of the present invention below in conjunction with the drawings and specific embodiments.
Can know that according to 3GPP TS 25.212 agreements uplink physical channel can be mapped in a plurality of transmission channels, the present invention analyzes a plurality of transmission channels relatively to carry out external circule power control simultaneously.
Fig. 2 is the structure drawing of device of realization ascending exterior ring power control of the present invention.As shown in Figure 2, external circule power control of the present invention carries out in NodeB, realizes uplink external ring power control by the auxiliary RNC of NodeB.This device is arranged among the NodeB, comprises up decoding module 201 and control module 202, wherein:
Up decoding module 201 is used for the frame data stream of base stations detected data/address bus, reports the frame quality information of each transmission channel that detected physical channel shines upon, for example used number of bit errors and the gross yards of BLER/FER/BER to control module.In the present embodiment, be that example describes described device, so the described up decoding module 201 of present embodiment is used to report mistake piece number and total block message of each Frame with detection computations BLER.In addition, if detect FER, then this up decoding module 201 is used to report the mistake frame number and the totalframes of each transmission channel; If detect BER, then be used to report the errored bit number and the gross bit rate number of each transmission channel.
Store the target SIR of physical channel and the threshold value of this target SIR correspondence in the control module 202 in advance, this control module 202 is used to realize the judgement of uplink external ring power control target SIR, that is: receive the frame quality information of each transmission channel that up decoding module reports, judge the difference of each transmission channel frame quality or excellent by the frame quality information of analyzing each transmission channel, again with on this or adjust down the target SIR of described each transmission channel, utilize the target SIR of adjusted each transmission channel to determine the target SIR of corresponding physical channel, promptly can select maximum or average in all transmission channel target SIR; Obtain the difference that this target SIR and RNC are handed down to the target SIR of NodeB recently again, if this difference is greater than described threshold value, then that self is definite target SIR sends to the uplink demodulation module as the final goal sir value of uplink external ring power control with this target SIR value; Otherwise the target SIR that RNC is issued recently gets the final goal sir value as uplink external ring power control, and this target SIR value is sent to the uplink demodulation module.
After uplink demodulation module 203 is received target SIR, carry out inner-loop power control according to this target SIR.
The method of realization uplink external ring power control of the present invention just is based on said apparatus, carries out in NodeB, realizes uplink external ring power control by the auxiliary RNC of NodeB.Method of the present invention is determined in the base station in advance and the target signal to noise ratio SIR of storage physical channel and the threshold value of this target SIR correspondence, and is comprised:
The frame quality of each transmission channel that A, base station measurement physical channel are shone upon; At each transmission channel,, go up or adjust down described target SIR according to the difference of measured frame quality or excellent; Determine the target SIR of corresponding physical channel according to the target SIR of adjusted each transmission channel; And receive the target SIR of this physical channel that radio network controller (RNC) issues recently;
B, base station obtain the target SIR of the described physical channel of self determining and the difference that described RNC issues the target SIR of this physical channel recently;
Whether the difference that C, base station determining step B are obtained surpasses the described threshold value of storage in advance, if, then will be described the target SIR of self definite physical channel as the final goal SIR of described physical channel uplink external ring power control; Otherwise the target SIR of this physical channel that described RNC is issued recently is as the final goal SIR of this physical channel uplink external ring power control.
The error rate of the present invention can be BLER, and described number of bit errors is mistake piece number, and described gross yards is a total block data; Perhaps, the described error rate also can be FER, and described number of bit errors is the mistake frame number, and described gross yards is a totalframes; Perhaps, the described error rate can also be BER, and described number of bit errors is the errored bit number, and described gross yards is total bit number.In following examples, be that example describes the method for the invention to carry out uplink external ring power control by check and analysis BLER.
Fig. 3 is the flow chart of a kind of embodiment of realization uplink external ring power control method of the present invention.In the present embodiment, suppose that this physical channel is uplink physical channel A, the transmission channel of being shone upon among this uplink physical channel A is Ai, wherein i be 0,1,2 ... n, as shown in Figure 3, this method comprises:
The mistake piece number of step 301, base station measurement and each transmission channel receiving data frames that adds up and total piece number.
Concrete, receive decoding module 201 reports every frame mistake piece number from transmission channel Ai to control module 202 and total block data, control module 202 adds up to mistake piece number and total block data respectively, utilizes frame counter that the frame number that reports is carried out counting statistics, i.e. Acount[i simultaneously] ++.
Whether step 302, judgement frame number by statistics reach predetermined number N, if then execution in step 303, otherwise, turn back to step 301.
The constant information that described N can be used as in the control module exists; Also can be used as a backstage configuration parameter and make amendment, to have greater flexibility according to the variation of system environments.
In the present embodiment, up decoding module 201 all will report once the mistake piece number and the total block data of this frame to control module 202 at every frame.In order to reduce interface flow, the present invention can also multiframe report once mistake piece number and total block data total in total frame number and this multiframe.The frequency that multiframe reports is by the value decision of described N, but must guarantee N=kf, wherein, the totalframes of f for once reporting, and since up decode procedure be the Data Receiving of waiting for a complete TTI (Transmission Time Interval) to after carry out again, so f must be the integral multiple of the TTI of transmission channel Ai.In such cases, the Acount[i in the step 301] ++ replaceablely be: Acount[i]=Acount[i]+f.
Step 303, determine the BLER of transmission channel Ai according to the mistake piece number that adds up in the step 301 and total block data, the merchant that the mistake piece number that is about to add up obtains divided by total block data is BLER; Judge the frame quality of transmission channel Ai again according to the target BLER of the transmission channel Ai that stores in advance, if BLER＜target BLER, then the frame quality is more excellent, if BLER＞target BLER, then frame is second-rate.
Among the present invention, the target BLER information of described transmission channel Ai sends to NodeB in advance by RNC.The present invention sets up in request (RADIO LINK SETUPREQUEST) message and radio link reconfiguration preparation (RADIO LINK RECONFIGURATIONPREPARE) message at the Radio Link of IUB interface protocol increases the field of carrying this target BLER information, by RNC described target BLER is handed down to NodeB by these two message.
Step 304, according to the frame quality of transmission channel Ai, determine the target SIR correction step-length of transmission channel Ai, if i.e.: the frame mass deviation of transmission channel Ai, then the correction step-length of transmission channel Ai is the positive step-length StepA[i of unit], if the frame quality is excellent partially, then the correction step-length of transmission channel Ai is the negative step-length StepA[i of unit]; After having determined the correction step-length of transmission channel Ai, calculate the new target SIR of transmission channel Ai again, that is: with the target SIR of transmission channel Ai and the correction step-length addition of transmission channel Ai, the value that obtains is the new target SIR of transmission channel Ai, is expressed as SirtargetA[i herein].
The step-length StepA[i of unit of described transmission channel Ai] and target SIR be stored in advance in the control module, can be used as the configuration information of safeguarding the backstage, can make amendment according to environmental change.
In addition, the present invention also can be divided into the frame quality several grades, determines the grade of the excellent partially or deviation of frame quality by the size of determined BLER in base station self and target BLER difference, can correspondingly determine different correction step-lengths according to different grades.For example the determined BLER in base station self surpasses 5 percent of target BLER, and then the frame quality is grade of deviation, and it revises step-length is a positive unit step-length; If the determined BLER in base station self surpasses 10 of target BLER, then the frame quality is two grades of deviation, and it revises step-length is two positive unit step-lengths; By that analogy.
Step 305, to the SirtargetA[i of each transmission channel Ai among the physical channel A] compare, get maximum max{SirtargetA[i wherein] } as the target SIR of physical channel A: SirtargetA.
As another kind of execution mode, also can be in this step at SirtargetA[i] in get the target SIR of a mean value as described physical channel A.
Step 306, read the target SIR of the physical channel A that RNC issues recently: SirtargetRNC, by the following formula SirtargetA that determines of SirtargetRNC and step 305 relatively:
Delta＝|SirtargetRNC-SirtargetA|
Wherein Delta is a comparative result, i.e. both absolute differences.
In the above-mentioned steps, the target SIR of the physical channel A that described RNC issues recently can be the target SIR of the physical channel A of: RNC external circule power control configuration, perhaps also can be the target SIR of the physical channel A that obtains in the RNC radio link reconfiguration.
Whether the threshold value of the target SIR correspondence of step 307, reading pre-stored: ThreSirtarget, determining step 306 determined Delta greater than ThreSirtarget, if then execution in step 308, otherwise, execution in step 309.
Step 308, with the final goal SIR of SirtargetA as physical channel A uplink external ring power control, send to the uplink demodulation module, the uplink demodulation module is carried out inner-loop power control, process ends according to this SirtargetA to physical channel A.
Step 309, with the final goal SIR of SirtargetRNC as physical channel A uplink external ring power control, send to the uplink demodulation module, the uplink demodulation module is carried out inner-loop power control, process ends according to this SirtargetRNC to physical channel A.
In the present invention, in case the value of the target SIR that RNC issues is too low or too high, then by the described operation of step 307, can carry out inner-loop power control without the target SIR that RNC issues, and carry out inner-loop power control with the determined SirtargetA of NodeB, therefore can avoid the inner-loop power control of NodeB to control the transmitting power of portable terminal (UE) low or too high.
The foregoing description is that example describes the present invention with check and analysis BLER only, one skilled in the art will appreciate that by check and analysis FER or BER and realizes method and apparatus of the present invention, can realize purpose of the present invention equally.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1. realize the method for uplink external ring power control in the mobile communcations system, this method is applicable to the uplink external ring power control of mobile communcations system physical channel, it is characterized in that, in the base station, determine and store the threshold value of physical channel target signal to noise ratio SIR and this target SIR correspondence in advance, in the base station, store the target signal to noise ratio SIR of each transmission channel that physical channel shone upon in advance, and comprise:
The frame quality of each transmission channel that A, base station measurement physical channel are shone upon; At each transmission channel,, go up or adjust down the target SIR of described each transmission channel according to the difference of measured frame quality or excellent; Determine the target SIR of corresponding physical channel according to the target SIR of adjusted each transmission channel; And receive the target SIR of this physical channel that radio network controller (RNC) issues recently;
B, base station obtain the target SIR of the described physical channel of self determining and the difference that described RNC issues the target SIR of this physical channel recently;
Whether the difference that C, base station determining step B are obtained surpasses the described threshold value of storage in advance, if, then will be described the target SIR of self definite physical channel as the final goal SIR of described physical channel uplink external ring power control; Otherwise the target SIR of this physical channel that described RNC is issued recently is as the final goal SIR of this physical channel uplink external ring power control.
2. the method for claim 1 is characterized in that, the target error rate of each transmission channel that described base station is stored described physical channel in advance and shone upon; And in the steps A, the detailed process of described base station measurement transmission channel frame quality comprises:
The error code number of A1, base station measurement and the transmission channel receiving data frames that adds up and total sign indicating number number;
A2, with the error code number divided by total sign indicating number number, the error rate of the ratio that obtains for measuring; The error rate that compares and measures and the target error rate of storage, if the error rate of measuring is less than the target error rate of storage, then the frame quality of this transmission channel is more excellent, if the error rate of measuring greater than the target error rate of storage, then the frame of this transmission channel is second-rate.
3. method as claimed in claim 2 is characterized in that, after the steps A 1, before the steps A 2, further comprises:
Judge whether measured Frame reaches predetermined number, if, execution in step A2 then, otherwise, steps A 1 returned.
4. method as claimed in claim 2, it is characterized in that, the concrete grammar that described base station is stored described target error rate in advance is: RNC sends the target error rate of each transmission channel that described physical channel shines upon to described base station, and the target error rate that the back storage is received is received in the base station.
5. as claim 2,3 or 4 described methods, it is characterized in that,
The described error rate is a Block Error Rate, and described number of bit errors is mistake piece number, and described gross yards is a total block data;
Perhaps, the described error rate is a frame error rate, and described number of bit errors is the mistake frame number, and described gross yards is a totalframes;
Perhaps, the described error rate is a bit error rate, and described number of bit errors is the errored bit number, and described gross yards is total bit number.
6. the method for claim 1 is characterized in that, in the steps A, described target SIR according to adjusted each transmission channel determines that the concrete grammar of the target SIR of corresponding physical channel is;
In the target SIR of described each transmission channel, get a maximum target SIR as described physical channel.
7. the method for claim 1 is characterized in that, in the steps A, described target SIR according to adjusted each transmission channel determines that the concrete grammar of the target SIR of corresponding physical channel is;
In the target SIR of described each transmission channel, get the target SIR of a mean value as described physical channel.
8. the method for claim 1, it is characterized in that, the target SIR of the described physical channel that described RNC issues recently is: the target SIR of this physical channel of RNC external circule power control configuration perhaps is the target SIR of this physical channel of obtaining in the RNC radio link reconfiguration.
9. the method for claim 1 is characterized in that, described mobile communcations system is the Wideband Code Division Multiple Access (WCDMA) communication system.
10. realize the device of uplink external ring power control in the mobile communcations system, it is characterized in that this device is arranged in the base station, comprise up decoding module and control module, wherein:
Up decoding module is used for the frame data stream of base stations detected data/address bus, reports the frame quality information of each transmission channel that detected physical channel shines upon to control module;
Store the target SIR of physical channel and the threshold value of this target SIR correspondence in the control module in advance, the target SIR of each transmission channel of storing physical channel in advance and being shone upon, this control module is used for by receiving and the frame quality information of each transmission channel of reporting of row decoding module analytically, adjust the target SIR of described each transmission channel, utilize the target SIR of adjusted each transmission channel to determine the target SIR of corresponding physical channel; Obtain the difference that this target SIR and RNC are handed down to the target SIR of base station recently again, if this difference is greater than described threshold value, then that self is definite target SIR sends to the uplink demodulation module as the final goal sir value of uplink external ring power control with this target SIR value; Otherwise the target SIR that RNC is issued recently sends to the uplink demodulation module as the final goal sir value of uplink external ring power control with this target SIR value.
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| CN101237263B (en) * | 2007-01-31 | 2012-10-10 | 电信科学技术研究院 | External ring power control method and device of uplink enhanced physical channel |
| CN102404836B (en) * | 2010-09-16 | 2015-05-20 | 中兴通讯股份有限公司 | Method and device for acquiring transmission power control (TPC) command |
| CN101977431B (en) * | 2010-10-22 | 2013-06-12 | 上海华为技术有限公司 | Method, device and system for controlling terminal power based on HSUPA |
| CN103533627B (en) * | 2012-07-02 | 2017-10-24 | 深圳市中兴微电子技术有限公司 | A kind of many CCTRCH ascending power control methods of same time slot and device |
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| CN1357985A (en) * | 2000-12-12 | 2002-07-10 | 华为技术有限公司 | Reverse outer-loop power controlling method for mobile communication system |
| CN1391732A (en) * | 1999-10-20 | 2003-01-15 | 诺基亚公司 | Method and arrangement for controlling transmission power and network element |
| CN1430430A (en) * | 2001-12-30 | 2003-07-16 | 华为技术有限公司 | Channel power control method in high speed data insertion system |
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| CN1391732A (en) * | 1999-10-20 | 2003-01-15 | 诺基亚公司 | Method and arrangement for controlling transmission power and network element |
| CN1357985A (en) * | 2000-12-12 | 2002-07-10 | 华为技术有限公司 | Reverse outer-loop power controlling method for mobile communication system |
| CN1430430A (en) * | 2001-12-30 | 2003-07-16 | 华为技术有限公司 | Channel power control method in high speed data insertion system |
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