CN101325435B - Control method for high speed sharing indication channel power - Google Patents
Control method for high speed sharing indication channel power Download PDFInfo
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- CN101325435B CN101325435B CN2007101123649A CN200710112364A CN101325435B CN 101325435 B CN101325435 B CN 101325435B CN 2007101123649 A CN2007101123649 A CN 2007101123649A CN 200710112364 A CN200710112364 A CN 200710112364A CN 101325435 B CN101325435 B CN 101325435B
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Abstract
A control method of a high speed sharing indication channel power is applied in the TD-SCDMA high speed downstream grouping access system. When a high speed sharing control channel HS-SCCH dispatching is provided at present, the node B executes the following steps: (a) executing the nest step if the current transmitting time interval is provided with the HS-SCCH dispatching, but not the first TTI of the continuous dispatching set, and the current continuous dispatching set receives the high speed sharing indication channel HS-SICH upstream feedback, otherwise in the open loop state without processing the power adjustment, and finishing; (b) going into the close loop state, transmitting the power control command word of the current TTI at the downstream, and determining the power control command word of the next TTI, finishing. The invention realizes the timely and effectively control on the HS-SICH channel power in the TD-SCDMA HSDPA system, reduces the power spending as far as possible when ensuring the performance of the chain performance, obtains larger capacitance.
Description
Technical field
The present invention relates to a kind of Poewr control method; (high speed downlink packet access technology: High-Speed Downlink PacketAccess) in the system, the NodeB side is controlled the method for HS-SICH (High-Speed Shared InformationChannel) channel power to relate in particular to a kind of third generation mobile field TD-SCDMA HSDPA.
Background technology
The power control techniques of wireless telecommunication system can adopt minimum transmitting power under the prerequisite that satisfies the receiving terminal quality, the stand-by time that can also effectively reduce the interference between the user simultaneously and prolong the terminal.In general, for the continuous emission system of up-downgoing, power control continues closed loop and carries out, but because the particularity of some system, certain period may occur to have the up-downgoing channel, and a period of time is not carried out the emission of this channel in addition.HS-SICH shared channel such as TD HSDPA; When having only certain user to have scheduling; This user just can use this SICH channel to carry out the up feedback of CQI (ChannelQuality Indicator) and N/ACK (Non/Acknowledgement), thereby interrupted situation appears in the power control that occurs.
Can know that according to top description former closed-loop power control method no longer is fit to such channel power control, so need to propose a kind of method to the type.
Summary of the invention
The technical problem that the present invention will solve provides a kind of control method of high speed sharing indication channel power, to realize the control of HS-SICH channel power in the TD-SCDMA HSDPA system.
In order to address the above problem, the invention provides a kind of control method of high speed sharing indication channel power, be applied to the TD-SCDMA high speed descending grouping access system, current high-speed shared control channel HS-SCCH when scheduling arranged, Node B is carried out following steps:
(a) like current transmission time interval TTI the HS-SCCH scheduling is arranged, but be not to dispatch first TTI of collection continuously and received the up feedback of high-speed shared indication channel HS-SICH, then carry out next step at current continuous scheduling collection; Otherwise; Be in open loop situations, do not carry out the power adjustment, finish;
(b) get into the closed loop state, at the power control commands word of descending transmission current TTI, and the power control commands word of definite next TTI, finish.
Further, said method also can have following characteristics: when this method was dispatched at the current HS-SCCH of not having, Node B was carried out following steps:
(a ') finishes if never cross the HS-SCCH scheduling before, as before had at least one HS-SCCH to dispatch; Judge again whether current continuous scheduling collection has received the up feedback of HS-SICH, as receive, execution in step (b '); As do not receive; Be in open loop situations, do not carry out the power adjustment, finish;
(b ') gets into the closed loop state, confirm the power control commands word of next TTI after, finish.
Further, said method also can have following characteristics: the process of the power control commands word of said definite next TTI further is divided into following steps:
(b1) judge whether current TTI has the up feedback of HS-SICH, as do not have,, finish the power control commands word of current TTI power control commands word as next TTI; If any the up feedback of HS-SICH, carry out next step;
(b2) calculate the prediction snr value of next TTI, and relatively should predict snr value and target signal to noise ratio value, confirm the power control commands word of next TTI, finish.
Further, said method also can have following characteristics:
In the first before execution in step of step (b2): judge whether to lose according to the up feedback of said HS-SICH, as lose, with the power control commands word of next TTI be changed to predefined one on the occasion of, finish; As do not lose execution in step (b2) again.
Further, said method also can have following characteristics: the prediction signal to noise ratio of calculating next TTI in the said step (b2) according to the following steps:
(b21) be the HS-SICH snr measurements of current TTI with current signal to noise ratio instantaneous value, and take out the snr value of a TTI, the initial predicted snr value of the next TTI that calculates according to these two values;
(b22) judge whether and to revise said initial predicted snr value; Like needs; After confirming correction value and said initial predicted snr value being revised with it; As the prediction snr value of next TTI, otherwise, directly with the prediction snr value of said initial predicted snr value as next TTI.
Further, said method also can have following characteristics:
In the said step (b22), current TTI has HS-SCCH when scheduling, as satisfies current TTI and with next TTI the up feedback of HS-SICH is arranged all, then with the power control commands word of current TTI the initial predicted snr value of next TTI is revised.
Further, said method also can have following characteristics:
In the said step (b22); When current TTI does not have the HS-SCCH scheduling; As satisfy the sequence number that the current TTI sequence number deducts current continuous first TTI of dispatching concentration and equal 4; And current TTI and next TTI all have the up feedback of HS-SICH, and the power control commands word that then issues on HS-SCCH with Node B the last time is revised the initial predicted SNR value of next TTI.
Further, said method also can have following characteristics:
The terminal UE side is recorded in the power control commands word that HS-SCCH receives; When current TTI has the HS-SICH signal to send; As be the 1st up feedback of HS-SICH or this transmission and sent last time between interval T TI number when setting largest interval, adopt open loop to carry out power emission, otherwise; When the power control commands word of receiving in the last time has used; Keep the transmitting power of HS-SICH to remain unchanged, as using, more than the transmitting power of a TTI add the HS-SICH transmitting power of the corresponding adjustment amount of the last power control commands word as current TTI.
Further, said method also can have following characteristics:
In the step (a); Like current TTI is not continuously first TTI of scheduling collection; And current continuous scheduling collection is not received the up feedback of HS-SICH, then at the power control commands word of descending transmission current TTI, the power control commands word of next TTI is changed to the value that the power adjustment is not carried out in expression; Simultaneously the sequence number of last HS-SCCH emission TTI is updated to the sequence number of current TTI, withdraws from this power control process then.
Further, said method also can have following characteristics:
In the step (a); Like current TTI is continuously first TTI of scheduling collection; Then the power control commands word with current TTI and next TTI is changed to the value that the power adjustment is not carried out in expression; At the power control commands word of descending transmission current TTI, simultaneously the sequence number of the sequence number of last HS-SCCH emission TTI and current continuous first TTI of scheduling collection is updated to the sequence number of current TTI, withdraw from this power control process then.
Further, said method also can have following characteristics:
In the step (a), if current TTI be not behind the link setup first HS-SCCH emission TTI and and last HS-SCCH emission TTI between the interval smaller or equal to the largest interval of setting, judge that then current TTI is not continuously the 1st TTI of scheduling collection.
Further, said method also can have following characteristics:
When current TTI is in open loop situations, perhaps when current TTI does not have the up feedback of HS-SICH, the prediction snr value of current TTI is changed to invalid constant.
Further, said method also can have following characteristics:
Step (b21) is calculated the initial predicted snr value of next TTI by following formula:
SNR_flt(n)＝(1-p)*SNR_flt(n-1)+p*SNR_realtime(n)
Wherein: SNR_flt (n) is the prediction snr value of next TTI; SNR_realtime (n) is the snr measurements of current TTI; SNR_flt (n-1) is the snr value of a last TTI; The forgetting factor of p for setting, as above the snr value of a TTI is invalid constant, then direct HS-SICH symbol level snr measurements with current TTI is the prediction snr value of next TTI.
The control method of the HS-SICH channel power that provides through embodiment of the present invention; Produce terminal HS-SICH uplink transmission power in base station side and confirm required TPC (Transmit Power Control) command word; The transmitting power of HS-SICH will obtain as far as possible in time and effectively control; Reduce the CQI of HS-SICH and the transmission error probability of N/ACH, when guaranteeing uplink performance, reduce power overhead as much as possible simultaneously, thereby obtain bigger capacity.Reflect the raising of network throughput and service satisfaction at high level.And the inventive method can be converted into closed-loop policy under certain conditions, and promptly the inventive method possesses extensive applicability.
Description of drawings
Fig. 1 is a kind of power control sequential sketch map of HS-SCCH channel and HS-SICH channel.
Fig. 2 is the another kind of power control sequential sketch map of HS-SCCH channel and HS-SICH channel.
Fig. 3 is the process chart of NodeB side in the embodiment of the invention HS-SICH channel power control method.
Fig. 4 is the process chart of UE side in the embodiment of the invention HS-SICH channel power control method.
Embodiment
Basic design of the present invention is: if when current downlink TTI and last downlink TTI belong to same continuous emission collection, then adopt the pattern of similar closed power control; Otherwise, then adopt open loop mode, this moment, the down order word was " DoNothing ", after the recipient receives this command word, do not carry out the power adjustment.Wherein (High-Speed Shared Control Channel: High-Speed Shared ControlChannel) the scheduling collection is meant the set that a certain user's one or more continuous descending SCCH emission TTI forms to HS-SCCH continuously, and the idle TTI number of the SCCH in this set between the adjacent TTI is all less than a certain largest interval (representing with the TTI number).Largest interval with default in the literary composition is designated as MAX_TTI_GAP, and this value has reflected the degree of correlation of channel time domain.
Node side HS-SICH power control system realizes that basic principle is described below; Power control sequential sketch map with reference to TD HSDPAHS-SICH is Fig. 1; Among the figure shown in first row is the TTI operating position of NodeB HS-SCCH channel, and shown in second row is the TTI operating position of NodeB HS-SICH channel.Blank box is represented idle TTI; Left side oblique line frame
representes that this TTI has SCCH TPC to issue, and right oblique line frame
expression has the up feedback of HS-SICH (also being abbreviated as SICH in the literary composition).Can find out that behind n the descending transmission of TTI of SCCH TPC power control commands word, the UE side can be behind 2 TTI in interval, promptly n+3 TTI has the up feedback of SICH.The NodeB side can predict in view of the above whether certain TTI has the up feedback of SICH.
NodeB produces the required HS-SICH power control commands word of next TTI in current TTI, is put in the power control commands word cache pool of next TTI, and when next TTI had descending HS-SCCH (also being abbreviated as SCCH in the literary composition) emission, NodeB directly took out transmission and gets final product.The target of power control is to make the reception signal of next time reach target SNR (signal to noise ratio) as much as possible through adjustment power, to satisfy the requirement of the quality of reception.
As shown in Figure 3, be the flow chart of present embodiment HS-SICH channel power control method, as shown in the figure, the processing that is directed against NodeB when the SCCH scheduling is arranged earlier describes, and may further comprise the steps:
Judgment criterion is: whether current TTI is first SCCH emission TTI behind the link setup, or n-last_scch_tti>MAX_TTI_GAP, if then current TTI sequence number n is the 1st that scheduling continuously collects.In other words, if current TTI be not behind the link setup first SCCH emission TTI and and last SCCH emission TTI between the interval smaller or equal to the largest interval of setting, then be not continuously the 1st TTI of scheduling collection.
Wherein:
N is the sequence number of current TTI;
Last_scch_tti is the sequence number of last SCCH emission TTI.
Wherein:
First_TTI_idx is continuously first TTI corresponding sequence number of scheduling collection;
TPC (n) and TPC (n+1) are respectively the HS-SICH power control commands words of current TTI and next TTI, when the TPC value is " DoNothing ", after the recipient receives this command word, do not carry out the power adjustment;
The SNR predicted value of next TTI that SNR_flt (n) makes for current TTI;
SNR_VALID is the invalid constant of SNR.
Step 150 at descending transmission TPC (n), makes TPC (n+1)=TPC (n), and just the TPC with a last TTI remains unchanged, and SNR_flt (n) is made as SNR_VALID, perhaps obtains the estimated value of this value through other modes, withdraws from this power control process, finishes;
Step 160 judges whether to lose, and whether the SNR of the SICH that records like judgement less than a certain thresholding, if, execution in step 170, otherwise execution in step 180;
Step 180 at descending transmission TPC (n), is the SICH symbol level SNR measured value of this TTI with current instantaneous value SNR_realtime (n), and obtains the SNR_flt (n-1) of a TTI that the initial predicted SNR value that calculates next TTI is SNR_flt (n);
In general; Prediction SNR value with the next TTI of two Parameters Calculation is SNR_flt (n); Promptly go up the SNR history value SNR_flt (n-1) of a TTI and the SNR transient measurement value SNR_realtime (n) of current TTI, the computing formula of the initial SNR predicted value of next TTI is generally:
SNR_flt(n)＝(1-p)
*SNR_flt(n-1)+p
*SNR_realtime(n) (1)
Explain: the p in the following formula is a forgetting factor, and the big more expression SNR history value of this value is pair more little with the influence of next TTI predicted value, and in addition, formula (1) just provides as an example, and the present invention is not limited thereto.
Treatment principle to SNR_flt in the present embodiment is, if a last TTI of current TTI does not have the up feedback of SICH, then SNR_flt is regarded as invalidly, only adopts the basis for forecasting of current instantaneous value as next TTISNR.Promptly equal SNR_VALID, then have like SNR_flt (n-1):
SNR_flt(n)＝SNR_realtime(n)
Step 190 judges whether to revise the initial predicted SNR value of next TTI, if, execution in step 200, otherwise, is the prediction SNR value of next TTI directly with this initial predicted SNR value, execution in step 210;
SCCH when scheduling arranged, and the principle that present embodiment is revised is: after current TTI is sent TPC (n), the UE side next TTI just with and only carry out power adjustment with this TPC, then use TPC (n) that the initial predicted SNR value of next TTI is revised.In conjunction with the corresponding processing mode of UE side (will be described in more detail below); Revising the condition that needs to satisfy here is: with next TTI the up feedback of SICH is arranged all in current TTI, SCCH scheduling situation can be inferred out before whether next TTI had the up feedback basis of SICH.
Situation when the current once SCCH of not having scheduling also is discussed here in the lump; When current TTI sequence number n-First_TTI_idx=4; System is in first TTI that changes closed loop from open loop over to; With next TTI the up feedback of SICH is arranged all like current TTI, the TPC that available NodeB the last time issues on SCCH revises the initial predicted SNR value of next TTI, because UE side the last TPC that issues before next TTI uses carries out the power adjustment.
Step 200 is confirmed correction value Delta T_TPC, and with this correction value the initial predicted SNR value of next TTI is revised, as the prediction SNR value of next TTI;
As stated, correction value confirm to be divided into following two kinds of situation:
Situation a: current TTI has the SCCH scheduling promptly to issue TPC command word, then Delta_TPC=TPC (n);
Situation b: current TTI does not have the SCCH scheduling, and like n-First_TTI_idx=4, Delta_TPC equals the TPC that NodeB the last time issues on SCCH.
For other situation, all make Delta_TPC=0.
Formula to SNR_flt (n) revises is following:
SNR_flt(n)＝f(SNR_flt(n-1)，SNR_realtime(n)，delta_TPC)
F (x) should (z) function can be set at wherein weighted sum or other computational methods of 3 parameters for x, y for f.
Do not have SCCH when scheduling for current, as before never cross the SCCH scheduling, then directly withdraw from the power control process.If at least one SCCH scheduling was arranged before; Then also carry out according to step 120 and subsequent step thereof basically; Confirm the TPC of next TTI and upgrade SNR_flt parameters such as (n); Not at the TPC of descending transmission current TTI, and the correction of the initial predicted SNR value of next TTI was different when difference was not have the SCCH scheduling.
Need to prove; For the present invention, the method that SNR_flt (n) is revised also can adopt other algorithm, is not limited to the mode among the embodiment; Simultaneously, the processing of UE side when carrying out the power adjustment also is not limited to the method in the present embodiment like the selection to TPC.
Have the concrete application example of SCCH scheduling to describe with one more below, suppose initial last_scch_tti=-(MAX_TTI_GAP+1), the NodeB side is carried out following flow process:
S1 has SCCH scheduling like TTI n, judges n-1ast_scch_tti>whether MAX_TTI_GAP satisfied; As satisfying, SNR_flt (n)=SNR_VALID then, TPC (n+1)=TPC (n)=" DoNothing "; It is n that last_scch_tti is composed, and First_TTI_idx=n finishes the power control process; Otherwise, carry out S2;
S2, judge n-First_TTI_idx whether 3 satisfy, if the current scheduling collection can not received the up feedback of SICH, is in open loop situations, the TPC command word is " DoNothing ", SNR_flt (n)=SNR_VALID finishes the power control process; Otherwise expression gets into scheduling collection continuously, carries out S3;
S3 judges the current up feedback of HS-SICH that whether has, if do not have, and TPC (n+1)=TPC (n), SNR_flt (n)=SNR_VALID finishes the power control process; If have, execution in step S4;
S4 judges whether SICH loses, if lose, and TPC (n+1)="+1 ", SNR_flt (n)=SNR_VALID finishes the power control process; Do not lose, carry out S5;
S5, SNR_realtime (n) are designated as the measurement SNR value of current SICH, obtain the SNR_flt (n-1) of last TTI, and judge whether next TTI has the up feedback of SICH, if having, carry out S6, otherwise, carry out S7;
S6 is when delta_TPC equals TPC (n);
S7, delta_TPC equals 0, continues to carry out S8;
S8, if SNR_flt (n-1) equals SNR_VALID, SNR_flt=SNR_realtime (n) then, otherwise be modified to SNR_Ctrl=SNR_flt+delta_TPC;
S9, if SNR_Ctrl is greater than SNR_Target, TPC (n+1)="+1 ", on the contrary this power control process is finished in TPC (n+1)=" 1 ".
More than under the various situation, have the TTIn of SCCH scheduling all can issue TCP (n), flow process part omitted.
Nearby principle is adopted in the corresponding TPC system of selection of present embodiment UE side, and the TPC that promptly only uses the last time to receive carries out the power adjustment and only uses once, and this makes the NodeB side judge the correction of SNR predicted value and becomes simple.Fig. 4 shows the handling process of UE side in the present embodiment HS-SICH channel power control method, in a TTI, carries out following steps:
Step 101 judges whether current TTI need send HS-SICH information, if execution in step 102 then, otherwise execution in step 111;
Step 102; Judge whether sent HS-SICH information before n the TTI, perhaps this sends TTI and sent idle TTI number between the TTI last time greater than MAX_TTI_GAP, promptly at a scheduling collection continuously; If both have any to satisfy; Then execution in step 103, otherwise, execution in step 104;
Step 103, subscriber equipment measures path loss according to PCCPCH (Primary Common Control PhysicalChannel Primary Common Control Physical Channel), and confirms open loop power, execution in step 107 according to the expectation power of HS-SICH;
Step 104 judges whether TPC_lastest_usage_flag (the sign amount whether the TPC command word received of the last time has been used) is FALSE, if, explain that this TPC command word is not used, then execution in step 105; Otherwise, explain that this TPC command word was used, then execution in step 106;
Step 105 is used this TPC command word, obtains the transmitted power of current HS-SICH, and the use sign of this TPC command word is set to be used execution in step 107;
The computing formula of the transmitted power Power_HS_SICH of current HS-SICH is:
Power_HS_SICH＝Power_HS_SICH_last+TPC_lastest*UL_STEP；
Wherein:
Power_HS_SICH_last: the power when last HS-SICH signal sends;
TPC_lastest: the TPC command word that the last time receives;
UL_STEP:HS-SICH power control adjustment step-length;
And have:
Power_HS_SICH_last＝Power_HS_SICH；
TPC_lastest_usage_flag=TR (expression is used).
Step 106, the last TPC command word was used, and need not adjust power, kept former transmitting power constant, i.e. Power_HS_SICH=Power_HS_SICH_last, execution in step 107;
Step 107 judges whether current TTI has the TPC command word of HS-SCCH, if confiscate, then execution in step 109; If receive, execution in step 108;
The TPC command word that step 108, current TTI are received is set to the TPC command word that the last time receives, i.e. TPC_lastet=TPC_Current; At this moment, this TPC command word also is not used, and its corresponding sign then is set: TPC_lastest_usage_flag=FALSE, execution in step 109;
Step 109, HS-SICH carries out up transmission according to the Power_HS_SICH size.
Step 111 judges whether current TTI has the TPC command word of HS-SCCH, if confiscate, finishes; If receive, execution in step 112;
The TPC command word that step 112, current TTI are received is set to the TPC command word that the last time receives: TPC_lastet=TPC_Current; At this moment, this TPC command word also is not used, and its corresponding sign: TPC_lastest_usage_flag=FALSE then is set, and finishes.
Fig. 2 is the another kind of power control sequential sketch map of HS-SCCH channel and HS-SICH channel.Among the figure shown in first row is the TTI operating position of NodeB HS-SCCH channel, and shown in second row is the TTI operating position of NodeB HS-SICH channel.Blank box is represented idle TTI; Left side oblique line frame
representes that this TTI has SCCH TPC to issue, and right oblique line frame
expression has the up feedback of SICH.By above-mentioned flow process, at the 6th TTI, HS-SICH adopts the 5th TPC that TTI issues (TPC5) to carry out the power adjustment; At the 7th and the 8th TTI, the power of HS-SICH is identical when keeping with the 6th TTI; At the 14th TTI, HS-SICH adopts open loop control; At the 16th TTI, adopt the 13rd TPC that TTI issues on the basis of the 14th the used power of TTI, to adjust.
Claims (13)
1. the control method of a high speed sharing indication channel power is applied to the TD-SCDMA high speed descending grouping access system, current high-speed shared control channel HS-SCCH when scheduling is arranged, and Node B is carried out following steps:
(a) when current transmission time interval TTI has the HS-SCCH scheduling; Like current TTI is not to dispatch first TTI of collection continuously and received the up feedback of high-speed shared indication channel HS-SICH at current continuous scheduling collection; Then carry out next step, otherwise, open loop situations be in; Do not carry out the power adjustment, finish;
(b) get into the closed loop state, at the power control commands word of descending transmission current TTI, and the power control commands word of definite next TTI, finish.
2. the method for claim 1 is characterized in that: this method is when the current HS-SCCH of not having scheduling, and Node B is carried out following steps:
(a ') finishes if never cross the HS-SCCH scheduling before, as before had at least one HS-SCCH to dispatch; Judge again whether current continuous scheduling collection has received the up feedback of HS-SICH, as receive, execution in step (b '); As do not receive; Be in open loop situations, do not carry out the power adjustment, finish;
(b ') gets into the closed loop state, confirm the power control commands word of next TTI after, finish.
3. according to claim 1 or claim 2 method, it is characterized in that: the process of the power control commands word of said definite next TTI further is divided into following steps:
(b1) judge whether current TTI has the up feedback of HS-SICH, as do not have,, finish the power control commands word of current TTI power control commands word as next TTI; If any the up feedback of HS-SICH, carry out next step;
(b2) calculate the prediction snr value of next TTI, and relatively should predict snr value and target signal to noise ratio value, confirm the power control commands word of next TTI, finish.
4. method as claimed in claim 3 is characterized in that:
In the first before execution in step of step (b2): judge whether to lose according to the up feedback of said HS-SICH, as lose, with the power control commands word of next TTI be changed to predefined one on the occasion of, finish; As do not lose execution in step (b2) again.
5. method as claimed in claim 3 is characterized in that: the prediction signal to noise ratio of calculating next TTI in the said step (b2) according to the following steps:
(b21) be the HS-SICH snr measurements of current TTI with current signal to noise ratio instantaneous value, and take out the snr value of a TTI, the initial predicted snr value of the next TTI that calculates according to these two values;
(b22) judge whether and to revise said initial predicted snr value; Like needs; After confirming correction value and said initial predicted snr value being revised with it; As the prediction snr value of next TTI, otherwise, directly with the prediction snr value of said initial predicted snr value as next TTI.
6. method as claimed in claim 5 is characterized in that:
In the said step (b22), current TTI has HS-SCCH when scheduling, as satisfies current TTI and with next TTI the up feedback of HS-SICH is arranged all, then with the power control commands word of current TTI the initial predicted snr value of next TTI is revised.
7. method as claimed in claim 5 is characterized in that:
In the said step (b22); When current TTI does not have the HS-SCCH scheduling; As satisfy the sequence number that the current TTI sequence number deducts current continuous first TTI of dispatching concentration and equal 4; And current TTI and next TTI all have the up feedback of HS-SICH, and the power control commands word that then issues on HS-SCCH with Node B the last time is revised the initial predicted SNR value of next TTI.
8. like claim 6 or 7 described methods, it is characterized in that:
The terminal UE side is recorded in the power control commands word that HS-SCCH receives; When current TTI has the HS-SICH signal to send; As be the 1st up feedback of HS-SICH or this transmission and sent last time between interval T TI number when setting largest interval, adopt open loop to carry out power emission, otherwise; When the power control commands word of receiving in the last time has used; Keep the transmitting power of HS-SICH to remain unchanged, as using, more than the transmitting power of a TTI add the HS-SICH transmitting power of the corresponding adjustment amount of the last power control commands word as current TTI.
9. the method for claim 1 is characterized in that:
In the step (a); Like current TTI is not continuously first TTI of scheduling collection; And current continuous scheduling collection is not received the up feedback of HS-SICH, then at the power control commands word of descending transmission current TTI, the power control commands word of next TTI is changed to the value that the power adjustment is not carried out in expression; Simultaneously the sequence number of last HS-SCCH emission TTI is updated to the sequence number of current TTI, withdraws from this power control process then.
10. the method for claim 1 is characterized in that:
In the step (a); Like current TTI is continuously first TTI of scheduling collection; Then the power control commands word with current TTI and next TTI is changed to the value that the power adjustment is not carried out in expression; At the power control commands word of descending transmission current TTI, simultaneously the sequence number of the sequence number of last HS-SCCH emission TTI and current continuous first TTI of scheduling collection is updated to the sequence number of current TTI, withdraw from this power control process then.
11. the method for claim 1 is characterized in that:
In the step (a), if current TTI be not behind the link setup first HS-SCCH emission TTI and and last HS-SCCH emission TTI between the interval smaller or equal to the largest interval of setting, judge that then current TTI is not continuously the 1st TTI of scheduling collection.
12., it is characterized in that like the described method of arbitrary claim in claim 1 or 2:
When current TTI is in open loop situations, perhaps when current TTI does not have the up feedback of HS-SICH, the prediction snr value of current TTI is changed to invalid constant.
13. method as claimed in claim 5 is characterized in that:
Step (b21) is calculated the initial predicted snr value of next TTI by following formula:
SNR_flt(n)＝(1-p)*SNR_flt(n-1)+p*SNR_realtime(n)
Wherein: SNR_flt (n) is the initial predicted snr value of next TTI; SNR_realtime (n) is the snr measurements of current TTI; SNR_flt (n-1) is the snr value of a last TTI; The forgetting factor of p for setting, as above the snr value of a TTI is invalid constant, then direct HS-SICH symbol level snr measurements with current TTI is the initial predicted snr value of next TTI.
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| CN102340856B (en) * | 2010-07-19 | 2014-12-10 | 中兴通讯股份有限公司 | Uplink closed-loop power control method and apparatus thereof |
| CN102325362A (en) * | 2011-05-23 | 2012-01-18 | 大唐移动通信设备有限公司 | Power control method, system and equipment |
| CN103428839B (en) * | 2013-08-08 | 2017-03-01 | 大唐移动通信设备有限公司 | A kind of processing method and processing device of TPC command word |
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| CN1429032A (en) * | 2001-12-24 | 2003-07-09 | 华为技术有限公司 | Open-loop power control method in switching process between frequencies |
| CN1750428A (en) * | 2005-11-02 | 2006-03-22 | 中兴通讯股份有限公司 | High speed shared control channels and method for realizing high speed shared information channel power |
| EP1351424A3 (en) * | 2002-04-06 | 2006-03-29 | Lg Electronics Inc. | Radio link parameter updating method in mobile communication system |
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| CN1429032A (en) * | 2001-12-24 | 2003-07-09 | 华为技术有限公司 | Open-loop power control method in switching process between frequencies |
| EP1351424A3 (en) * | 2002-04-06 | 2006-03-29 | Lg Electronics Inc. | Radio link parameter updating method in mobile communication system |
| CN1750428A (en) * | 2005-11-02 | 2006-03-22 | 中兴通讯股份有限公司 | High speed shared control channels and method for realizing high speed shared information channel power |
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| 3GPP.《Technical Specification Group Radio Access Network |
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| Physical layer procedures (TDD)》.《3GPP TS 25.224 V7.2.0》.2007,全文. |
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