CN101409912A - Method and system for controlling external loop power of high speed sharing control channel - Google Patents
Method and system for controlling external loop power of high speed sharing control channel Download PDFInfo
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Abstract
The invention discloses an outer-loop power control method of a high-speed shared control channel and a device thereof. The method comprises the following steps: receiving and demodulating the data of the high-speed shared control channel; and when the data demodulation of the high-speed shared control channel have errors, judging whether the data erroneously demodulated are the data sent to target user equipment or the data sent to other user equipment; counting the times of demodulation error of data sent to the target user equipment; and increasing a target value when the times of demodulation error of data sent to the target user equipment reaches a first threshold T1. When the data demodulation has errors, firstly judgment is performed to determine whether the data erroneously demodulated is the data sent to the target user equipment or the data sent to other user equipment, and then the target value is controlled according to the judgment result, which improves the system performance.
Description
Technical field
The present invention relates generally to wireless communication technology field, relates in particular to a kind of outer-loop power controlling method and system of High-Speed Shared Control Channel.
Background technology
Along with the following multimedia service demand growing to high speed data transfer, wireless data service will sharply increase, this just requires 3-G (Generation Three mobile communication system) should have some characteristics of suitable transmitting data service, as high data volume, high sudden, high reliability etc.
For (the Time Division Duplex of the time division duplex in the 3G (Third Generation) Moblie, TDD) system, TD SDMA (TD-SCDMA for example, Time Division-Synchronous Code DivisionMultiple Access) system, support HSDPA (High Speed Downlink Packages Access, the high speed downlink packet access) business is the key character of 3GPP (3rd Generation Partnership Project, third generation partner program) Release5.
HSDPA is as the high-speed down data packet access technique, be incorporated in the version of 3GPPR5 in March, 2002, based on DSCH Downlink Shared Channel, data service is provided, theoretical flank speed surpasses 10Mb/s, reasonable CDMA (Code Division Multiple Access, sign indicating number divide many groups to insert) the limited problem of system descending capacity that solved.The principal character of HSPDA system comprises: adopt HARQ (Hybrid Automatic Repeat Request in physical layer, the mixed self-adapting repeat requests) and AMC (Adaptive Modulation and Coding, Adaptive Modulation and Coding) technology, introduce 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) high order modulation improves the availability of frequency spectrum, realize the shared channel scheduling of each UE (User Equipment, subscriber equipment) by sign indicating number branch and time-division.The HARQ technology has adopted SAW (Stop and Wait, stop and waiting for) agreement, require Node B sent data to UE after, need obtain UE feeding back ACK (ACKnowledge, confirmation) or NACK (Not ACKnowledge, confirmation not), whether reply data correctly receives, so that decision is data retransmission or New Development data.The channel quality indicator (CQI) that AMC specification requirement UE feeding back downlink is measured (Channel Quality Indicator, channel quality indication) is so that the code rate and the transformat of the descending HSDPA data of decision Node B side.
In the HSDPA system, HS-DSCH (High-Speed Downlink Shared Channel, high-speed downlink shared channel) channel mainly carries high-speed data service, HS-SICH (high-speedshared information channel, share the information Control channel at a high speed) channel is mainly to base station feedback CQI information, and the selection resource is done reference when transmitting for the base station next time.HS-SCCH (High Speed SharedControl Channel, High-Speed Shared Control Channel) channel mainly carries the professional needed control information of HSDPA, the code channel that takies of HS-DSCH for example, time slot, modulation system, transmission block size, process number, the new data indication, the cyclic sequence of redundancy version information and HS-SCCH number (HCSN).According to standard, the user only could receive the data of HS-DSCH channel after correctly detecting the HS-SCCH channel.So the quality of the detection performance of HS-SCCH channel just becomes the prerequisite of the execution of HSDPA business.And one efficiently the Poewr control method of HS-SCCH can improve the detection performance of HS-SCCH.
And the TD-HSDPA system is the system of a multiple users share same channel, the user can only correctly translate the base station and issue the information of oneself, if the result of user's demodulation HS-SCCH is wrong, for the user, be that the data that can't at once judge this reception are issued other users or issued this user.Therefore, also just can't carry out exterior ring power control by the number of HS-SCCH decoding error.In addition, if user's demodulation HS-SCCH channel is all can not correctly translating message in a period of time continuously, if untimely adjustment performance number may cause the user to can not receive correct HS-SCCH information always.If continue to use traditional outer-loop power controlling method, the user detects the HS-SCCH mistake and does not just receive that according to the user correct HS-SCCH handles, so according to professional BLER (Block Error Rate, bLock error rate) requirement, target SIR (signal interference ratio) value will soon be brought up to maximum, HS-SCCH is just sent out by maximum power in the base station always, thereby be certain to cause HS-SCCH power to adjust mistake, in addition, if the HS-SCCH performance number is excessive, also can cause very big interference to other channel of HS-SCCH place time slot, cause that the integral body of systematic function descends, this just needs the new Poewr control method that is suitable for the HS-SCCH channel.
Therefore, how to provide a kind of suitable HS-SCCH outer-loop power controlling method just to become the technical problem that needs to be resolved hurrily.
Summary of the invention
The present invention proposes a kind of outer-loop power controlling method and system of High-Speed Shared Control Channel, elder generation judges that it still is other subscriber equipmenies that the data of demodulation mistake send to target UE when the data demodulates mistake, according to judged result desired value is controlled again, improved systematic function.
The technical scheme of the embodiment of the invention is achieved in that
A kind of outer-loop power controlling method of High-Speed Shared Control Channel comprises:
Receive the data and the demodulation of High-Speed Shared Control Channel, when the error in data of the described High-Speed Shared Control Channel of demodulation, the data of judging the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies;
Statistics is to the number of times of the data demodulates mistake that sends to described target UE;
When the number of times to the data demodulates mistake that sends to described target UE reaches first threshold T 1, improve desired value.
Preferably, also comprise after the data of described reception High-Speed Shared Control Channel and the demodulation:
The number of times of the data of the continuously correct described High-Speed Shared Control Channel of demodulation of statistics;
When correctly the number of times of the data of the described High-Speed Shared Control Channel of demodulation reaches second threshold T 2 continuously, reduce desired value.
Preferably, also comprise after the data of described reception High-Speed Shared Control Channel and the demodulation:
Statistics is to the number of times of the continuous demodulation mistake of data of reception;
When the number of times to the continuous demodulation mistake of data that receives reaches 8, change initial condition over to, initial target value and all parameters that reset.
Preferably, the data of described judgement demodulation mistake send to the data of target UE or the data that send to other subscriber equipmenies comprise:
During the data of correct demodulation High-Speed Shared Control Channel, the cyclic sequence HCSN value that the storage demodulation is come out;
Calculate the S=(value of (HCSN_new+8)-HCSN_old) Mod8, wherein, the cyclic sequence HCSN value of once correct demodulation after described HCSN_new represents in adjacent twice correct demodulation, the cyclic sequence HCSN value of once correct demodulation before described HCSN_old represents in adjacent twice correct demodulation, described Mod represents modulo operation;
According to the value output judged result of described S, if the value of described S is 1, then all the wrong demodulated data in the middle of this twice correct demodulation all send to other subscriber equipmenies;
If the value of described S is not 1, then all the wrong demodulated data in the middle of this twice correct demodulation send to described target UE, and the number of times that sends to the data demodulates mistake of described target UE equals described S value.
Preferably, described desired value is target signal interference ratio value or target power value.
Preferably, described raising desired value comprises:
Whether the desired value after judgement improves allows desired value greater than maximum, if the desired value after the described raising then allows desired value as the desired value after improving described maximum greater than the described maximum desired value that allows.
Preferably, described reduction desired value comprises:
Whether the desired value after judgement reduces allows desired value less than minimum, if the target power after the described reduction then allows desired value as the desired value after reducing described minimum less than the described minimum desired value that allows.
A kind of exterior ring power control system of High-Speed Shared Control Channel comprises:
The receiving demodulation unit is used to receive the data and the demodulation of High-Speed Shared Control Channel;
First judging unit, when being used for the error in data when the described High-Speed Shared Control Channel of demodulation, the data of judging the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies;
First statistic unit is used to add up the number of times to the data demodulates mistake that sends to described target UE;
First adjustment unit is used for improving desired value when the number of times to the data demodulates mistake that sends to described target UE reaches first threshold T 1.
Preferably, also comprise:
Second statistic unit is used to add up continuously the correctly number of times of the data of the described High-Speed Shared Control Channel of demodulation;
Second adjustment unit is used for reducing desired value when correctly the number of times of the data of the described High-Speed Shared Control Channel of demodulation reaches second threshold T 2 continuously.
Preferably, also comprise:
The 3rd statistic unit is used to add up the number of times to the continuous demodulation mistake of data that receives;
State conversion unit is used for changing initial condition over to, initial target value and all parameters that reset when the number of times to the continuous demodulation mistake of data that receives reaches 8.
Preferably, described first judging unit comprises:
Memory cell, when being used for the data of correct demodulation High-Speed Shared Control Channel, the cyclic sequence HCSN value that the storage demodulation is come out;
Computing unit, be used to calculate the S=(value of (HCSN_new+8)-HCSN_old) Mod8, wherein, the cyclic sequence HCSN value of once correct demodulation after described HCSN_new represents in adjacent twice correct demodulation, the cyclic sequence HCSN value of once correct demodulation before described HCSN_old represents in adjacent twice correct demodulation, described Mod represents modulo operation;
Output unit is used for the value output judged result according to described S, if the value of described S is 1, then all the wrong demodulated data in the middle of this twice correct demodulation all send to other subscriber equipmenies;
If the value of described S is not 1, then all the wrong demodulated data in the middle of this twice correct demodulation send to described target UE, and the number of times that sends to the data demodulates mistake of described target UE equals described S value.
Preferably, described desired value is target signal interference ratio value or target power value.
Preferably, described first adjustment unit comprises:
Second judging unit is used to judge whether the desired value after the raising allows desired value greater than maximum, if the desired value after the described raising then allows desired value as the desired value after improving described maximum greater than the described maximum desired value that allows.
Preferably, described second adjustment unit comprises:
The 3rd judging unit is used to judge whether the desired value after the reduction allows desired value less than minimum, if the target power after the described reduction then allows desired value as the desired value after reducing described minimum less than the described minimum desired value that allows.
The outer-loop power controlling method of High-Speed Shared Control Channel of the present invention and system, elder generation judges that it still is other subscriber equipmenies that the data of demodulation mistake send to target UE when the data demodulates mistake, number of times to the data demodulates mistake that sends to target UE is added up, according to statistics desired value is controlled again, avoided sending to of the influence of other user's data, improved systematic function exterior ring power control.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of outer-loop power controlling method first embodiment of a kind of High-Speed Shared Control Channel of the present invention;
Fig. 2 is the flow chart of outer-loop power controlling method second embodiment of a kind of High-Speed Shared Control Channel of the present invention;
Fig. 3 is the composition structure chart of exterior ring power control system first embodiment of a kind of High-Speed Shared Control Channel of the present invention;
Fig. 4 is the composition structure chart of exterior ring power control system second embodiment of a kind of High-Speed Shared Control Channel of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
With reference to Fig. 1, show the flow chart of outer-loop power controlling method first embodiment of a kind of High-Speed Shared Control Channel of the present invention, comprise step:
The data and the demodulation of step 110, reception High-Speed Shared Control Channel.
HS-SCCH is the source that the HSDPA downlink data sends, the mode that the base station is divided by time-division and sign indicating number, the subframe of each user's HS-SCCHs is handed down to subscriber equipment, the HS-SCCH channel code collection that each subscriber equipment distributes during according to the HS-DSCH link establishment, the HS-SCCHs channel that demodulation is eated dishes without rice or wine.The HS-SCCH channel code collection of each subscriber equipment has 4 at most, and the base station selects one of them to send signaling to each subframe, and the HS-SCCH channel that user that it must identification is used at present receives the data on the HS-SCCH channel and carries out demodulation.(described data are control information to have only data on the correct demodulation HS-SCCH channel, the cyclic sequence number that comprises code channel, time slot, modulation system, transmission block size, process number, new data indication, redundancy version information and HS-SCCH that HS-DSCH takies) after, could receive correct subscriber equipment is handed down in the base station by the HS-DSCH channel the data that receive.
Target UE has two kinds of situations to the data demodulates mistake on the HS-SCCH: a kind of situation is that target UE can not correctly receive the base station and sends to the data of oneself by HS-SCCH, target UE can be to the data demodulates mistake on the HS-SCCH in this case, too low as the HS-SCCH transmitting power, just can not correctly receive the base station sends to the data of oneself to target UE, thereby correctly demodulation, in this case, the transmitting power of raising HS-SCCH just can solve; Another kind of situation is that the data that target UE receives do not send to oneself, but the base station sends to the data of other subscriber equipmenies, in this case, the data meeting demodulation mistake of target UE to receiving, and the transmitting power that improves HS-SCCH can not solve, because the data that target UE receives send to other subscriber equipment, target UE is correctly demodulation certainly.
The technical scheme of the embodiment of the invention is will be these two kinds of situations separately, because target UE receive send to other subscriber equipmenies data correctly demodulation be not that transmitting power deficiency owing to HS-SCCH causes, so when carrying out power control, get rid of this situation.Therefore, data that need to judge the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies.
When the demodulating data mistake, that can not judge immediately that data on the HS-SCCH send to target UE or send to other subscriber equipmenies, basis for estimation is when HS-SCCH is not transformed into initial condition, the cyclic sequence HCSN that comes out according to the correct demodulation in back judges, if last HCSN that correctly demodulates and the current HCSN that correctly demodulates satisfy following relation:
((HCSN_new+8)-HCSN_old) Mod8=1, just think that the data that target UE receives between twice correct demodulation all send to other subscriber equipmenies, if above-mentioned relation does not satisfy, send to target UE with regard to thinking that data that target UE between twice correct demodulation receives have, but do not have correct receiving demodulation.The number that sends to the data of target UE and demodulation mistake is the (value of (HCSN_new+8)-HCSN_old) Mod8.
The cyclic sequence HCSN of HS-SCCH, this parameter value adds 1 when each HS-SCCH is transferred to the user.
To sending to the data of target UE and demodulation mistake, the number of times of statistics demodulation mistake.Target UE deducts the number of times that the data that send to other subscriber equipmenies are the data demodulates mistake that sends to described target UE to the number of times of all data demodulates mistakes.
In various embodiments of the present invention, described desired value can be a target signal interference ratio value, also can be target power value, and the embodiment of the invention is target signal interference ratio value preferably.
When the number of times to the data demodulates mistake that sends to described target UE reaches a threshold T 1, promptly power is controlled, improve desired value.
Described threshold T 1 can be according to network condition, and factors such as overall system performance are set, and the embodiment of the invention does not limit it.
The described technical scheme of the embodiment of the invention, elder generation judges that it still is other subscriber equipmenies that the data of demodulation mistake send to target UE when the data demodulates mistake, number of times to the data demodulates mistake that sends to target UE is added up, according to statistics desired value is controlled again, avoided sending to of the influence of other user's data to exterior ring power control, an exterior ring power control consideration sends to the demodulation of target UE data mistake is carried out, guarantee the correctness of HS-SCCH exterior ring power control, improved systematic function.
With reference to Fig. 2, show the flow chart of outer-loop power controlling method second embodiment of a kind of High-Speed Shared Control Channel of the present invention, comprise step:
The data and the demodulation of step 210, reception High-Speed Shared Control Channel.
Step 220, judge target UE to the correct still mistake of the data demodulates of HS-SCCH, if demodulation correctly then enter step 230, mistake then enters step 250.
The number of times of the data of step 230, the continuously correct described High-Speed Shared Control Channel of demodulation of statistics.Enter step 240.
Step 240, when continuously the number of times of the data of the correct described High-Speed Shared Control Channel of demodulation reaches second threshold T 2, reduce desired value.
When target UE when continuously the number of times of the data of the correct described High-Speed Shared Control Channel of demodulation reaches second threshold T 2, the power that might distribute to HS-SCCH is excessive, and can influence the overall performance of system this moment.Therefore need to reduce desired value.Described threshold T 2 can be according to network condition, and factors such as overall system performance are set, and the embodiment of the invention does not limit it.
Further, whether the desired value after judgement reduces allows desired value less than minimum, if the target power after the described reduction then allows desired value as the desired value after reducing described minimum less than the described minimum desired value that allows.That is to say,, reduce desired value and can not surpass the minimum desired value that allows in order to guarantee the whole system performance.If the desired value after calculating allows desired value less than minimum, serve as desired value after reducing then with the described minimum desired value that allows.
The data of step 250, judgement demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies.
Target UE has two kinds of situations to the data demodulates mistake on the HS-SCCH: a kind of situation is that target UE can not correctly receive the base station and sends to the data of oneself by HS-SCCH, target UE can be to the data demodulates mistake on the HS-SCCH in this case, too low as the HS-SCCH transmitting power, just can not correctly receive the base station sends to the data of oneself to target UE, thereby correctly demodulation, in this case, the transmitting power of raising HS-SCCH just can solve; Another kind of situation is that the data that target UE receives do not send to oneself, but the base station sends to the data of other subscriber equipmenies, in this case, the data meeting demodulation mistake of target UE to receiving, and the transmitting power that improves HS-SCCH can not solve, because the data that target UE receives send to other subscriber equipment, target UE is correctly demodulation certainly.
The technical scheme of the embodiment of the invention is will be these two kinds of situations separately, because target UE receive send to other subscriber equipmenies data correctly demodulation be not that transmitting power deficiency owing to HS-SCCH causes, so when carrying out power control, get rid of this situation.Therefore, data that need to judge the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies.
The detailed process of described judgement comprises:
During the data of correct demodulation High-Speed Shared Control Channel, the cyclic sequence HCSN value that the storage demodulation is come out;
Calculate the S=(value of (HCSN_new+8)-HCSN_old) Mod8, wherein, the cyclic sequence HCSN value of once correct demodulation after described HCSN_new represents in adjacent twice correct demodulation, the cyclic sequence HCSN value of once correct demodulation before described HCSN_old represents in adjacent twice correct demodulation, described Mod represents modulo operation;
According to the value output judged result of described S, if the value of described S is 1, then all the wrong demodulated data in the middle of this twice correct demodulation all send to other subscriber equipmenies;
If the value of described S is not 1, then all the wrong demodulated data in the middle of this twice correct demodulation send to described target UE, and the number of times that sends to the data demodulates mistake of described target UE equals described S value.
When the demodulating data mistake, that can not judge immediately that data on the HS-SCCH send to target UE or send to other subscriber equipmenies, basis for estimation is when HS-SCCH is not transformed into initial condition, the cyclic sequence HCSN that comes out according to the correct demodulation in back judges, if last HCSN that correctly demodulates and the current HCSN that correctly demodulates satisfy following relation:
((HCSN_new+8)-HCSN_old) Mod8=1, just think that the data that target UE receives between twice correct demodulation all send to other subscriber equipmenies, if above-mentioned relation does not satisfy, send to target UE with regard to thinking that data that target UE between twice correct demodulation receives have, but do not have correct receiving demodulation.The number that sends to the data of target UE and demodulation mistake is the (value of (HCSN_new+8)-HCSN_old) Mod8.
The cyclic sequence HCSN of HS-SCCH, this parameter value adds 1 when each HS-SCCH is transferred to the user.HCSN only puts 3 bits in HS-SCCH, so its span is in 0-7.
Value behind the delivery can only be in 0-7, thereby twice correct actual interval can not be greater than 8 before and after also will guaranteeing, otherwise just can't make accurate judgment, in order to prevent at interval greater than 8, if the number of demodulation mistake arrives 8 continuously, just change initial condition over to, therefore may further comprise the steps:
Statistics is to the number of times of the continuous demodulation mistake of data of reception;
When the number of times to the continuous demodulation mistake of data that receives reaches 8, change initial condition over to, initial target value and all parameters that reset.
Because the span of HCSN is in 0-7,, change initial condition over to so the number of times of the continuous demodulation mistake of data that receives is reached at 8 o'clock.
At this moment, initial target value can be set at higher value, thereby guarantee the detection performance of HS-SCCH.After changing the initial condition initial target value over to, all parameters that reset are as relevant counter O reset.Described parameter comprises the counting of protecting statistics number.
Step 260, statistics are to the number of times of the data demodulates mistake that sends to described target UE.
To sending to the data of target UE and demodulation mistake, the number of times of statistics demodulation mistake.Target UE deducts the number of times that the data that send to other subscriber equipmenies are the data demodulates mistake that sends to described target UE to the number of times of all data demodulates mistakes.
Step 270, when the number of times to the data demodulates mistake that sends to described target UE reaches first threshold T 1, improve desired value.
When the number of times to the data demodulates mistake that sends to described target UE reaches a threshold T 1, promptly power is controlled, improve desired value.
The step-length of raising desired value is directly proportional according to the number of HS-SCCH mistake, that is: Δ=step*Err_num.Wherein the step value is the step-length of desired value variation, and Err_num represents the HS-SCCH number of mistake.
Further, whether the desired value after judgement improves allows desired value greater than maximum, if the desired value after the described raising then allows desired value as the desired value after improving described maximum greater than the described maximum desired value that allows.That is to say,, improve desired value and can not surpass the maximum desired value that allows in order to guarantee the whole system performance.
Described threshold T 1 can be according to network condition, and factors such as overall system performance are set, and the embodiment of the invention does not limit it.
The described technical scheme of the embodiment of the invention, elder generation judges that it still is other subscriber equipmenies that the data of demodulation mistake send to target UE when the data demodulates mistake, number of times to the data demodulates mistake that sends to target UE is added up, according to statistics desired value is controlled again, avoided sending to of the influence of other user's data to exterior ring power control, an exterior ring power control consideration sends to the demodulation of target UE data mistake is carried out, guarantee the correctness of HS-SCCH exterior ring power control, improved systematic function.
With reference to Fig. 3, show the composition structure chart of exterior ring power control system first embodiment of a kind of High-Speed Shared Control Channel of the present invention, control system 300 comprises:
Receiving demodulation unit 310, be used to receive the data and the demodulation of High-Speed Shared Control Channel.
First judging unit 320, when being used for the error in data when the described High-Speed Shared Control Channel of demodulation, the data of judging the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies.
Target UE has two kinds of situations to the data demodulates mistake on the HS-SCCH: a kind of situation is that target UE can not correctly receive the base station and sends to the data of oneself by HS-SCCH, target UE can be to the data demodulates mistake on the HS-SCCH in this case, too low as the HS-SCCH transmitting power, just can not correctly receive the base station sends to the data of oneself to target UE, thereby correctly demodulation, in this case, the transmitting power of raising HS-SCCH just can solve; Another kind of situation is that the data that target UE receives do not send to oneself, but the base station sends to the data of other subscriber equipmenies, in this case, the data meeting demodulation mistake of target UE to receiving, and the transmitting power that improves HS-SCCH can not solve, because the data that target UE receives send to other subscriber equipment, target UE is correctly demodulation certainly.
The technical scheme of the embodiment of the invention is will be these two kinds of situations separately, because target UE receive send to other subscriber equipmenies data correctly demodulation be not that transmitting power deficiency owing to HS-SCCH causes, so when carrying out power control, get rid of this situation.Therefore, data that need to judge the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies.
Described first judging unit 320 comprises:
Memory cell, when being used for the data of correct demodulation High-Speed Shared Control Channel, the cyclic sequence HCSN value that the storage demodulation is come out;
Computing unit, be used to calculate the S=(value of (HCSN_new+8)-HCSN_old) Mod8, wherein, the cyclic sequence HCSN value of once correct demodulation after described HCSN_new represents in adjacent twice correct demodulation, the cyclic sequence HCSN value of once correct demodulation before described HCSN_old represents in adjacent twice correct demodulation, described Mod represents modulo operation;
Output unit is used for the value output judged result according to described S, if the value of described S is 1, then all the wrong demodulated data in the middle of this twice correct demodulation all send to other subscriber equipmenies;
If the value of described S is not 1, then all the wrong demodulated data in the middle of this twice correct demodulation send to described target UE, and the number of times that sends to the data demodulates mistake of described target UE equals described S value.
First statistic unit 330, be used to add up number of times to the data demodulates mistake that sends to described target UE.
When the number of times to the data demodulates mistake that sends to described target UE reaches a threshold T 1, promptly power is controlled, improve desired value.
Described threshold T 1 can be according to network condition, and factors such as overall system performance are set, and the embodiment of the invention does not limit it.
The described technical scheme of the embodiment of the invention, elder generation judges that it still is other subscriber equipmenies that the data of demodulation mistake send to target UE when the data demodulates mistake, number of times to the data demodulates mistake that sends to target UE is added up, according to statistics desired value is controlled again, avoided sending to of the influence of other user's data to exterior ring power control, an exterior ring power control consideration sends to the demodulation of target UE data mistake is carried out, guarantee the correctness of HS-SCCH exterior ring power control, improved systematic function.
With reference to Fig. 4, show the composition structure chart of exterior ring power control system second embodiment of a kind of High-Speed Shared Control Channel of the present invention, described control system 400 comprises:
Receiving demodulation unit 310, be used to receive the data and the demodulation of High-Speed Shared Control Channel.
First judging unit 320, when being used for the error in data when the described High-Speed Shared Control Channel of demodulation, the data of judging the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies.
Target UE has two kinds of situations to the data demodulates mistake on the HS-SCCH: a kind of situation is that target UE can not correctly receive the base station and sends to the data of oneself by HS-SCCH, target UE can be to the data demodulates mistake on the HS-SCCH in this case, too low as the HS-SCCH transmitting power, just can not correctly receive the base station sends to the data of oneself to target UE, thereby correctly demodulation, in this case, the transmitting power of raising HS-SCCH just can solve; Another kind of situation is that the data that target UE receives do not send to oneself, but the base station sends to the data of other subscriber equipmenies, in this case, the data meeting demodulation mistake of target UE to receiving, and the transmitting power that improves HS-SCCH can not solve, because the data that target UE receives send to other subscriber equipment, target UE is correctly demodulation certainly.
The technical scheme of the embodiment of the invention is will be these two kinds of situations separately, because target UE receive send to other subscriber equipmenies data correctly demodulation be not that transmitting power deficiency owing to HS-SCCH causes, so when carrying out power control, get rid of this situation.Therefore, data that need to judge the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies.
Described first judging unit 320 comprises:
Memory cell, when being used for the data of correct demodulation High-Speed Shared Control Channel, the cyclic sequence HCSN value that the storage demodulation is come out;
Computing unit, be used to calculate the S=(value of (HCSN_new+8)-HCSN_old) Mod8, wherein, the cyclic sequence HCSN value of once correct demodulation after described HCSN_new represents in adjacent twice correct demodulation, the cyclic sequence HCSN value of once correct demodulation before described HCSN_old represents in adjacent twice correct demodulation, described Mod represents modulo operation;
Output unit is used for the value output judged result according to described S, if the value of described S is 1, then all the wrong demodulated data in the middle of this twice correct demodulation all send to other subscriber equipmenies;
If the value of described S is not 1, then all the wrong demodulated data in the middle of this twice correct demodulation send to described target UE, and the number of times that sends to the data demodulates mistake of described target UE equals described S value.
Value behind the delivery can only be in 0-7, thereby twice correct actual interval can not be greater than 8 before and after also will guaranteeing, otherwise just can't make accurate judgment, in order to prevent at interval greater than 8, if the number of demodulation mistake arrives 8 continuously, just change initial condition over to, therefore also comprise:
The 3rd statistic unit is used to add up the number of times to the continuous demodulation mistake of data that receives.
State conversion unit is used for changing initial condition over to, initial target value and all parameters that reset when the number of times to the continuous demodulation mistake of data that receives reaches 8.
Because the span of HCSN is in 0-7,, change initial condition over to so the number of times of the continuous demodulation mistake of data that receives is reached at 8 o'clock.
At this moment, initial target value can be set at higher value, thereby guarantee the detection performance of HS-SCCH.After changing the initial condition initial target value over to, all parameters that reset are as relevant counter O reset.Described parameter comprises the counting of protecting statistics number.
First statistic unit 330, be used to add up number of times to the data demodulates mistake that sends to described target UE.
When the number of times to the data demodulates mistake that sends to described target UE reaches a threshold T 1, promptly power is controlled, improve desired value.
Preferably, described first adjustment unit 340 also comprises:
Second judging unit is used to judge whether the desired value after the raising allows desired value greater than maximum, if the desired value after the described raising then allows desired value as the desired value after improving described maximum greater than the described maximum desired value that allows.
Described threshold T 1 can be according to network condition, and factors such as overall system performance are set, and the embodiment of the invention does not limit it.
Second statistic unit 410, be used to add up the number of times of the data of the continuously correct described High-Speed Shared Control Channel of demodulation.
Preferably, described second adjustment unit 420 also comprises:
The 3rd judging unit is used to judge whether the desired value after the reduction allows desired value less than minimum, if the target power after the described reduction then allows desired value as the desired value after reducing described minimum less than the described minimum desired value that allows.
The described technical scheme of the embodiment of the invention, elder generation judges that it still is other subscriber equipmenies that the data of demodulation mistake send to target UE when the data demodulates mistake, number of times to the data demodulates mistake that sends to target UE is added up, according to statistics desired value is controlled again, avoided sending to of the influence of other user's data to exterior ring power control, an exterior ring power control consideration sends to the demodulation of target UE data mistake is carried out, guarantee the correctness of HS-SCCH exterior ring power control, improved systematic function.
One of ordinary skill in the art will appreciate that, realize that all or part of step in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, comprise step as above-mentioned method embodiment, described storage medium, as: ROM/RAM, magnetic disc, CD etc.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the outer-loop power controlling method of a High-Speed Shared Control Channel is characterized in that, comprising:
Receive the data and the demodulation of High-Speed Shared Control Channel, when the error in data of the described High-Speed Shared Control Channel of demodulation, the data of judging the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies;
Statistics is to the number of times of the data demodulates mistake that sends to described target UE;
When the number of times to the data demodulates mistake that sends to described target UE reaches first threshold T 1, improve desired value.
2. the outer-loop power controlling method of High-Speed Shared Control Channel according to claim 1 is characterized in that, also comprises after the data of described reception High-Speed Shared Control Channel and the demodulation:
The number of times of the data of the continuously correct described High-Speed Shared Control Channel of demodulation of statistics;
When correctly the number of times of the data of the described High-Speed Shared Control Channel of demodulation reaches second threshold T 2 continuously, reduce desired value.
3. the outer-loop power controlling method of High-Speed Shared Control Channel according to claim 2 is characterized in that, also comprises after the data of described reception High-Speed Shared Control Channel and the demodulation:
Statistics is to the number of times of the continuous demodulation mistake of data of reception;
When the number of times to the continuous demodulation mistake of data that receives reaches 8, change initial condition over to, initial target value and all parameters that reset.
4. the outer-loop power controlling method of High-Speed Shared Control Channel according to claim 3 is characterized in that, the data of described judgement demodulation mistake send to the data of target UE or the data that send to other subscriber equipmenies comprise:
During the data of correct demodulation High-Speed Shared Control Channel, the cyclic sequence HCSN value that the storage demodulation is come out;
Calculate the S=(value of (HCSN_new+8)-HCSN_old) Mod8, wherein, the cyclic sequence HCSN value of once correct demodulation after described HCSN_new represents in adjacent twice correct demodulation, the cyclic sequence HCSN value of once correct demodulation before described HCSN_old represents in adjacent twice correct demodulation, described Mod represents modulo operation;
According to the value output judged result of described S, if the value of described S is 1, then all the wrong demodulated data in the middle of this twice correct demodulation all send to other subscriber equipmenies;
If the value of described S is not 1, then all the wrong demodulated data in the middle of this twice correct demodulation send to described target UE, and the number of times that sends to the data demodulates mistake of described target UE equals described S value.
5. according to the outer-loop power controlling method of each described High-Speed Shared Control Channel of claim 1 to 4, it is characterized in that described desired value is:
Target signal interference ratio value or target power value.
6. the outer-loop power controlling method of High-Speed Shared Control Channel according to claim 5 is characterized in that, described raising desired value comprises:
Whether the desired value after judgement improves allows desired value greater than maximum, if the desired value after the described raising then allows desired value as the desired value after improving described maximum greater than the described maximum desired value that allows.
7. according to the outer-loop power controlling method of each described High-Speed Shared Control Channel of claim 2 to 4, it is characterized in that described reduction desired value comprises:
Whether the desired value after judgement reduces allows desired value less than minimum, if the target power after the described reduction then allows desired value as the desired value after reducing described minimum less than the described minimum desired value that allows.
8. the exterior ring power control system of a High-Speed Shared Control Channel is characterized in that, comprising:
The receiving demodulation unit is used to receive the data and the demodulation of High-Speed Shared Control Channel;
First judging unit, when being used for the error in data when the described High-Speed Shared Control Channel of demodulation, the data of judging the demodulation mistake send to the data of target UE or send to the data of other subscriber equipmenies;
First statistic unit is used to add up the number of times to the data demodulates mistake that sends to described target UE;
First adjustment unit is used for improving desired value when the number of times to the data demodulates mistake that sends to described target UE reaches first threshold T 1.
9. the exterior ring power control system of High-Speed Shared Control Channel according to claim 8 is characterized in that, also comprises:
Second statistic unit is used to add up continuously the correctly number of times of the data of the described High-Speed Shared Control Channel of demodulation;
Second adjustment unit is used for reducing desired value when correctly the number of times of the data of the described High-Speed Shared Control Channel of demodulation reaches second threshold T 2 continuously.
10. the exterior ring power control system of High-Speed Shared Control Channel according to claim 9 is characterized in that, also comprises:
The 3rd statistic unit is used to add up the number of times to the continuous demodulation mistake of data that receives;
State conversion unit is used for changing initial condition over to, initial target value and all parameters that reset when the number of times to the continuous demodulation mistake of data that receives reaches 8.
11. the exterior ring power control system of High-Speed Shared Control Channel according to claim 10 is characterized in that, described first judging unit comprises:
Memory cell, when being used for the data of correct demodulation High-Speed Shared Control Channel, the cyclic sequence HCSN value that the storage demodulation is come out;
Computing unit, be used to calculate the S=(value of (HCSN_new+8)-HCSN_old) Mod8, wherein, the cyclic sequence HCSN value of once correct demodulation after described HCSN_new represents in adjacent twice correct demodulation, the cyclic sequence HCSN value of once correct demodulation before described HCSN_old represents in adjacent twice correct demodulation, described Mod represents modulo operation;
Output unit is used for the value output judged result according to described S, if the value of described S is 1, then all the wrong demodulated data in the middle of this twice correct demodulation all send to other subscriber equipmenies;
If the value of described S is not 1, then all the wrong demodulated data in the middle of this twice correct demodulation send to described target UE, and the number of times that sends to the data demodulates mistake of described target UE equals described S value.
12. to the exterior ring power control system of 11 each described High-Speed Shared Control Channels, it is characterized in that according to Claim 8 described desired value is:
Target signal interference ratio value or target power value.
13. the exterior ring power control system of High-Speed Shared Control Channel according to claim 12 is characterized in that, described first adjustment unit comprises:
Second judging unit is used to judge whether the desired value after the raising allows desired value greater than maximum, if the desired value after the described raising then allows desired value as the desired value after improving described maximum greater than the described maximum desired value that allows.
14. the exterior ring power control system according to each described adjustment shared control channel of claim 9 to 11 is characterized in that, described second adjustment unit comprises:
The 3rd judging unit is used to judge whether the desired value after the reduction allows desired value less than minimum, if the target power after the described reduction then allows desired value as the desired value after reducing described minimum less than the described minimum desired value that allows.
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|---|---|---|---|
| CNA2008102272999A CN101409912A (en) | 2008-11-26 | 2008-11-26 | Method and system for controlling external loop power of high speed sharing control channel |
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| CNA2008102272999A CN101409912A (en) | 2008-11-26 | 2008-11-26 | Method and system for controlling external loop power of high speed sharing control channel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977431A (en) * | 2010-10-22 | 2011-02-16 | 上海华为技术有限公司 | Method, device and system for controlling terminal power based on HSUPA |
| CN103179651A (en) * | 2011-12-20 | 2013-06-26 | 意法-爱立信有限公司 | Outer ring power control method and deivce of high-speed shared control channels and user equipment |
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2008
- 2008-11-26 CN CNA2008102272999A patent/CN101409912A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977431A (en) * | 2010-10-22 | 2011-02-16 | 上海华为技术有限公司 | Method, device and system for controlling terminal power based on HSUPA |
| 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 |
| CN103179651A (en) * | 2011-12-20 | 2013-06-26 | 意法-爱立信有限公司 | Outer ring power control method and deivce of high-speed shared control channels and user equipment |
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