CN103533581A - Method and apparatus for channel adjusting - Google Patents
Method and apparatus for channel adjusting Download PDFInfo
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- CN103533581A CN103533581A CN201210225198.4A CN201210225198A CN103533581A CN 103533581 A CN103533581 A CN 103533581A CN 201210225198 A CN201210225198 A CN 201210225198A CN 103533581 A CN103533581 A CN 103533581A
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Abstract
The invention discloses a method and apparatus for channel adjusting. The method comprises the following steps that a signal-to-interference ratio (SIR) of data that are received this time is estimated, wherein the received data carry a TPC and an SS; the SIR and a preset SIR threshold are compared; and if the SIR is larger than or equal to the SIR threshold, the TPC and the SS are determined to be valid and a sending power and sending time of an enhanced uplink physical channel (E-PUCH) are adjusted by the TPC and the SS. According to the invention, a technical problem that an uploading rate of high speed uplink packet access (HSUPA) is influenced because a sending power and sending time of an E-PUCH are adjusted by mistakes due to false detection of the TPC and the SS in the prior art can be solved, thereby realizing technical effects that the probability of false adjustment of the sending power and the sending time of the E-PUCH due to false detection of the TPC and the SS can be reduced and the uplink transmission effectiveness is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of channel adjusting method and device.
Background technology
In order to meet better the demand of the high speed upstream data services such as interaction multimedia, TD-SCDMA system has been introduced high speed uplink packet access (HSUPA) technology in Release6 standard.HSUPA is the set of some wireless link enhancing technology, and its target is to improve by improving the throughput of community and the covering of high data rate uplink air interface capacity utilance and terminal use's experience.
HSUPA system physical layer has been introduced new physical channel, and wherein, strengthening uplink physical channel (Enhanced Uplink Physical Channel, referred to as E-PUCH) is the traffic data channel of HSUPA, is mainly used to service data transmission; E-DCH insertion authority channel (E-DCH Access Grant Channel, referred to as E-AGCH) be absolute grant channel, when scheduling method, network side utilizes this channel to send authorization power, available time slot, code channel, the spreading factor of employing, the number of E-UCCH etc. in the E-HICH resource of use and a TTI; E-DCH HARQ confirms indicating channel (E-DCH HARQ Acknowledgement Indicator Channel, referred to as E-HICH) be mixed automatic retransfer request (the Hybrid Automatic Repeat Request that network side feeds back to UE, referred to as HARQ) indicating channel, whether be used to indicate UE needs to retransmit.
E-HICH is divided into the E-HICH of scheduling and non-scheduled E-HICH, wherein, the E-HICH of scheduling only transmitting HARQ replys indication information (ACK or NACK), and non-scheduled E-HICH not only loading ACK or NACK message, also transmit uplink power control command word (TPC) and up transmission simultaneous bias (SS), the transmission of E-PUCH when TPC and SS are used for controlling non-scheduled pattern.Therefore, TPC and the SS of the upper carrying of non-scheduled E-HICH are most important to the transmission of E-PUCH.
When non-scheduled pattern, the HARQ of E-HICH replys indication information (ACK or NACK) and TPC, SS information are passed through respectively after the orthogonal sequence spread spectrum of two 80 length, through scrambling, physical channel mapping, Data Modulation, weighting, merge again and again after spectrum-spreading and scrambling, send to UE.When UE receives, E-HICH is carried out to joint-detection, demodulation and descrambling, the 80 long orthogonal sequences of replying indication information use due to HARQ are known for UE, and it is relevant that UE directly utilizes this sequence and reception data to carry out, and judge ACK or NACK by correlation symbol.Yet, the 80 long orthogonal sequences that use for TPC and SS, UE can not know for sure, only knows that this sequence is in the antitone sequence of in certain three orthogonal sequence or these three sequences.Therefore, UE does relevantly with receiving data respectively by these three sequences respectively, and that sequence of the absolute value maximum of correlation is the sequence of using while sending, and the sequence number of this sequence in these three sequences and the symbol of correlation determine TPC and SS jointly.
In practical wireless systems, due to the introducing of Noise and Interference, there is flase drop in TPC and the SS of the upper carrying of non-scheduled E-HICH, if still adjust the transmission of E-PUCH according to wrong TPC and SS, through after a while, certainly will cause E-PUCH to send unsuccessfully, affect the uploading rate of HSUPA.
For above-mentioned problem, effective solution is not yet proposed at present.
Summary of the invention
The invention provides a kind of channel adjusting method and device, thereby at least to solve in prior art the mistuning of the E-PUCH transmitted power that causes due to TPC and SS flase drop and transmitting time, affect the technical problem of the uploading rate of HSUPA.
According to an aspect of the present invention, provide a kind of channel adjusting method, having comprised: estimate the signal-to-jamming ratio SIR of the data that this receives, wherein, the data that receive have carried uplink power control word TPC and up transmission simultaneous bias SS; SIR is compared with the SIR thresholding setting in advance; If SIR is more than or equal to SIR thresholding, determines that TPC and SS are effective, and adjust strengthening transmitted power and the transmitting time of uplink physical channel E-PUCH by TPC and SS.
Preferably, after definite SIR is more than or equal to SIR thresholding, said method also comprises: the correlation that obtains the data that receive; Correlation and predefined associated gate limit value are compared; If correlation is greater than pre-stored associated gate limit value, determine that TPC and SS are effective.
Preferably, correlation comprises: the correlation of absolute value maximum in three correlations that three orthogonal sequences distributing to TPC and SS are carried out obtaining after relevant treatment with the data that receive respectively, and/or mixed automatic retransfer request HARQ replys the absolute value that indicator sequence and the data that receive are carried out the correlation that obtains after relevant treatment.
Preferably, after SIR is compared with the SIR thresholding setting in advance, said method also comprises: if definite TPC and SS are invalid, do not adjust transmitted power and the transmitting time of E-PUCH.
Preferably, before estimating the SIR of these data that receive, said method also comprises: by emulation and/or system debug, set in advance SIR thresholding and/or associated gate limit value.
According to a further aspect in the invention, a kind of signal channel adjusting device is provided, has comprised: estimation unit, for estimating the signal-to-jamming ratio SIR of the data that this receives, wherein, the data that receive carry uplink power control word TPC and up transmission simultaneous bias SS; The first comparing unit, for comparing with the SIR thresholding setting in advance SIR; Adjustment unit, when being more than or equal to SIR thresholding as SIR, determines that TPC and SS are effective, and adjusts strengthening transmitted power and the transmitting time of uplink physical channel E-PUCH by TPC and SS.
Preferably, said apparatus also comprises: acquiring unit, for after definite SIR is more than or equal to SIR thresholding, obtains the correlation of the data that receive; The second comparing unit, for comparing correlation and predefined associated gate limit value; The first determining unit, when being greater than pre-stored associated gate limit value when correlation, determines that TPC and SS are effective.
Preferably, correlation comprises: the correlation of absolute value maximum in three correlations that three orthogonal sequences distributing to TPC and SS are carried out obtaining after relevant treatment with the data that receive respectively, and/or mixed automatic retransfer request HARQ replys the absolute value that indicator sequence and the data that receive are carried out the correlation that obtains after relevant treatment.
Preferably, said apparatus also comprises: the second determining unit, for after correlation and predefined associated gate limit value are compared, if determine TPC and SS invalid, do not adjust transmitted power and the transmitting time of E-PUCH.
Preferably, said apparatus also comprises: setting unit, for before estimating the SIR of these data that receive, sets in advance SIR thresholding and/or associated gate limit value by emulation and/or system debug.
In the present invention, by being determined whether, the judgement of TPC and SS validity adjusts strengthening transmitted power and the transmitting time of uplink physical channel, only judging in effective situation, just it is adjusted, thereby solved in prior art, thereby the E-PUCH transmitted power causing due to TPC and SS flase drop and the mistuning of transmitting time affect the technical problem of the uploading rate of HSUPA, reach the probability of the mistuning that reduces the E-PUCH transmitted power that causes due to TPC and SS flase drop and transmitting time, improved the technique effect of the validity of uplink.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is a kind of preferred flow charts according to the channel adjusting method of the embodiment of the present invention;
Fig. 2 is the another kind of preferred flow charts according to the channel adjusting method of the embodiment of the present invention;
Fig. 3 is a kind of preferred structure block diagram according to the signal channel adjusting device of the embodiment of the present invention;
Fig. 4 is the another kind of preferred structure block diagram according to the signal channel adjusting device of the embodiment of the present invention;
Fig. 5 is according to the schematic flow sheet of the TPC of the embodiment of the present invention and SS judging confidence method;
Fig. 6 is according to the flow chart of the execution mode one of the TPC of the embodiment of the present invention and SS judging confidence method;
Fig. 7 is according to the flow chart of the execution mode two of the TPC of the embodiment of the present invention and SS judging confidence method;
Fig. 8 is according to the flow chart of the execution mode three of the TPC of the embodiment of the present invention and SS judging confidence method.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
The embodiment of the present invention provides a kind of channel adjusting method, as shown in Figure 1, comprises the following steps:
Step S102: estimate the SIR of the data that this receives, wherein, the data that receive carry TPC and SS;
Step S104: SIR is compared with the SIR thresholding setting in advance;
Step S106: if SIR is more than or equal to SIR thresholding, determines that TPC and SS are effective, and by TPC and SS, the transmitted power of E-PUCH and transmitting time are adjusted.
In this preferred implementation, by being determined whether, the judgement of TPC and SS validity adjusts strengthening transmitted power and the transmitting time of uplink physical channel, only judging in effective situation, just it is adjusted, thereby solved in prior art, thereby the E-PUCH transmitted power causing due to TPC and SS flase drop and the mistuning of transmitting time affect the technical problem of the uploading rate of HSUPA, reached the probability of the mistuning that reduces the E-PUCH transmitted power that causes due to TPC and SS flase drop and transmitting time, improve the technique effect of the validity of uplink.
In order further to improve the accuracy of judgement, can after SIR is compared, to receiving the correlation of data and local sequence, compare further to judge, thereby further heightening the accuracy of judgement.In a preferred implementation, after definite SIR is more than or equal to SIR thresholding, said method can also as shown in Figure 2, comprise the following steps:
Step S202: the correlation that obtains the data that receive;
Step S204: correlation and predefined associated gate limit value are compared;
Step S206: if correlation is greater than pre-stored associated gate limit value, determine that TPC and SS are effective.
Because of carrying person HARQ information and TPC in down channel, SS information, therefore, it is one of following that above-mentioned correlation can comprise: the correlation of absolute value maximum in three correlations that three orthogonal sequences distributing to TPC and SS are carried out obtaining after relevant treatment with the data that receive respectively, and/or HARQ replys the absolute value that indicator sequence and the data that receive are carried out the correlation that obtains after relevant treatment.That is, can be the maximum in the correlation of TPC and SS and local sequence, can be also the correlation of HARQ and local sequence or to both once judging, to only have all to meet and just can determine that TPC and SS are effective, specific implementation does not limit at this.
If judge TPC and SS does not satisfy condition, the parameter comparing does not reach threshold value, not according to the TPC obtaining and SS, channel is adjusted, and keeps original parameter.In a preferred implementation, after SIR compares with the SIR thresholding setting in advance, if definite TPC and SS are invalid, do not adjust transmitted power and the transmitting time of E-PUCH.
For above-mentioned SIR thresholding and/or associated gate limit value, can be that the mode setting in advance by emulation and/or system debug obtains.Meanwhile, the SIR of estimation or correlation are all the byproducts in reception & disposal, only need simple preservation, and internal memory expends very little.
A kind of signal channel adjusting device is also provided in the present embodiment, and this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described device of following examples is preferably realized with software, hardware, or the realization of the combination of software and hardware also may and be conceived.Fig. 3 is a kind of preferred structure block diagram of signal channel adjusting device, as shown in Figure 3, comprising: estimation unit 302, the first comparing unit 304 and adjustment unit 306.Below this structure is described.
The first comparing unit 304, with estimation unit 302 couplings, for SIR is compared with the SIR thresholding setting in advance;
In a preferred implementation, as shown in Figure 4, said apparatus also comprises:
Acquiring unit 402, for after definite SIR is more than or equal to SIR thresholding, obtains the correlation of the data that receive;
The second comparing unit 404, with acquiring unit 402 couplings, for correlation and predefined associated gate limit value are compared;
The first determining unit 406, with the second comparing unit 404 coupling, when being greater than pre-stored associated gate limit value when correlation, determines that TPC and SS are effective.
Above-mentioned correlation comprises: the correlation of absolute value maximum in three correlations that three orthogonal sequences distributing to TPC and SS are carried out obtaining after relevant treatment with the data that receive respectively, and/or mixed automatic retransfer request HARQ replys the absolute value that indicator sequence and the data that receive are carried out the correlation that obtains after relevant treatment.
In a preferred implementation, said apparatus also comprises: the second determining unit, for after correlation and predefined associated gate limit value are compared, if determine TPC and SS invalid, do not adjust transmitted power and the transmitting time of E-PUCH.
In a preferred implementation, said apparatus also comprises: setting unit, for before estimating the SIR of these data that receive, sets in advance SIR thresholding and/or associated gate limit value by emulation and/or system debug.
The present embodiment also provides the method and apparatus of the upper TPC of a kind of preferred non-scheduled E-HICH and SS judging confidence, can effectively reduce the flase drop of TPC and SS by the method and device, to reduce sending mortality due to the E-PUCH that TPC or SS flase drop cause.Mainly comprise following several mode:
1) by channel estimation module and sir measurement module, estimate the SIR of the data that this receives, and by the SIR thresholding setting in advance, adjudicate the validity of TPC and SS, when being greater than SIR thresholding, think that to detect TPC and the SS obtain effective, otherwise think TPC and SS invalid.If TPC and SS are invalid, do not adjust transmitted power and the transmitting time of corresponding E-PUCH.
2) by channel estimation module and sir measurement module, estimate that this receives the SIR of data, and retain three orthogonal sequences that TPC and SS use and the correlation that receives data, therefrom select the correlation of absolute value maximum, be made as Cor_Value
max, and set in advance SIR thresholding and correlation thresholding.When the SIR estimating is greater than SIR thresholding, and maximum related value Cor_Value
maxbe greater than correlation thresholding, think that to detect TPC and the SS obtain effective, otherwise think TPC and SS invalid.If think that TPC and SS are invalid, transmitted power and the transmitting time of corresponding E-PUCH will do not adjusted.
3) by channel estimation module and sir measurement module, estimate that this receives the SIR of data, and retain the correlation that HARQ replys indicator sequence and receives data, the absolute value of establishing correlation is Cor_Value
harq.And set in advance SIR thresholding and correlation thresholding, when the SIR estimating is greater than SIR thresholding and Cor_Value
harqbe greater than correlation thresholding, think that to detect TPC and the SS obtain effective, otherwise think TPC and SS invalid.If TPC and SS are invalid, transmitted power and the transmitting time of corresponding E-PUCH will do not adjusted.
In above-mentioned preferred implementation, by proposing a kind of easy and effective TPC and SS judging confidence method and apparatus realized, reduce TPC that non-scheduled E-HICH carries and the probability of false detection of SS, reduced the probability of the mistuning of the E-PUCH transmitted power that causes due to TPC and SS flase drop and transmitting time.Further, said method and device simplicity of design, be convenient to realize, and only need to pre-set decision threshold, and by simply relatively realizing, the SIR of estimation or correlation are all the byproducts in reception & disposal, only need simple preservation, and internal memory expends very little.
Method for above-mentioned TPC and SS judging confidence, as shown in Figure 5, comprises the following steps:
Step S1: through joint-detection, demodulation, descrambling, obtains receiving soft bit sequence.
Step S2: receiving terminal is correlated with local sequence and the soft bit sequence of reception of soft value.
Step S3: the estimated value that obtains the SIR of this E-HICH reception by channel estimating and SIR estimation module.
Step S4: with the SIR estimating or the absolute value of correlation, with pre-set SIR thresholding or correlation thresholding, compare, if surpass thresholding, think that TPC and SS are effective, otherwise think TPC and SS invalid.Preferably, the above-mentioned SIR thresholding setting in advance or correlation thresholding can obtain by modes such as emulation or system debugs.
With three concrete execution modes, foregoing invention is described below:
Execution mode 1
As shown in Figure 6, comprise the steps:
Step S602: obtain the SIR of estimation by channel estimating and sir measurement module, be designated as SIR
es
Step S604: after obtaining TPC and SS, by SIR, the validity of TPC and SS is adjudicated.Suppose that default SIR thresholding is SIR
thif, SIR
es>SIR
th, judge that TPC and SS are effective, otherwise judgement TPC and SS are invalid.
Execution mode 2
As shown in Figure 7, comprise the steps:
Step S702: obtain the SIR of estimation by channel estimating and sir measurement module, be designated as SIR
es.
Step S704: the soft bit sequence of reception after demodulation descrambling is relevant respectively with three 80 long orthogonal sequences distributing to TPC and SS use.
Step S706: select three correlation absolute value maximums, be designated as Cor_Value
max.
Step S708: after obtaining TPC and SS, by SIR and correlation, the validity of TPC and SS is adjudicated.Suppose that default SIR thresholding is SIR
th, correlation thresholding is Cor_Value
thif, SIR
es>SIR
th, and Cor_Value
max>Cor_Value
th, judge that TPC and SS are effective, otherwise judgement TPC and SS are invalid.
Execution mode 3
As shown in Figure 8, comprise the steps:
Step S802: obtain the SIR of estimation by channel estimating and sir measurement module, be designated as SIR
es.
Step S804: the orthogonal sequence that the soft bit sequence of reception after demodulation descrambling is replied indication with HARQ is correlated with, and the absolute value of establishing correlation is Cor_Value
harq.
Step S806: after obtaining TPC and SS, by SIR and correlation, the validity of TPC and SS is adjudicated.Suppose that default SIR thresholding is SIR
th, correlation thresholding is Cor_Value
thif, SIR
es>SIR
th, and Cor_Value
harq>Cor_Value
th, judge that TPC and SS are effective, otherwise judgement TPC and SS are invalid.
In another embodiment, also provide a kind of software, the technical scheme that this software is described for carrying out above-described embodiment and preferred implementation.
In another embodiment, also provide a kind of storage medium, stored above-mentioned software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
From above description, can find out, the present invention has realized following technique effect: to strengthening transmitted power and the transmitting time of uplink physical channel, adjust by the judgement of TPC and SS validity is determined whether, only judging in effective situation, just it is adjusted, thereby solved in prior art, thereby the E-PUCH transmitted power causing due to TPC and SS flase drop and the mistuning of transmitting time affect the technical problem of the uploading rate of HSUPA, reached the probability of the mistuning that reduces the E-PUCH transmitted power that causes due to TPC and SS flase drop and transmitting time, improve the technique effect of the validity of uplink.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a channel adjusting method, is characterized in that, comprising:
Estimate the signal-to-jamming ratio SIR of the data that this receives, wherein, described in the data that receive carry uplink power control word TPC and up transmission simultaneous bias SS;
Described SIR is compared with the SIR thresholding setting in advance;
If described SIR is more than or equal to described SIR thresholding, determines that described TPC and SS are effective, and adjust strengthening transmitted power and the transmitting time of uplink physical channel E-PUCH by described TPC and SS.
2. method according to claim 1, is characterized in that, after definite described SIR is more than or equal to described SIR thresholding, described method also comprises:
The correlation of the data that receive described in obtaining;
Described correlation and predefined associated gate limit value are compared;
If described correlation is greater than pre-stored associated gate limit value, determine that described TPC and SS are effective.
3. method according to claim 2, it is characterized in that, described correlation comprises: the correlation of absolute value maximum in three correlations that three orthogonal sequences distributing to described TPC and SS are carried out obtaining after relevant treatment with the described data that receive respectively, and/or mixed automatic retransfer request HARQ reply indicator sequence with described in the data that receive carry out the absolute value of the correlation that obtains after relevant treatment.
4. method according to claim 1, is characterized in that, after described SIR is compared with the SIR thresholding setting in advance, described method also comprises:
If determine that described TPC and SS are invalid, do not adjust transmitted power and the transmitting time of described E-PUCH.
5. according to the method described in any one in claim 1 to 4, it is characterized in that, before estimating the SIR of these data that receive, described method also comprises:
By emulation and/or system debug, set in advance described SIR thresholding and/or associated gate limit value.
6. a signal channel adjusting device, is characterized in that, comprising:
Estimation unit, for estimating the signal-to-jamming ratio SIR of the data that this receives, wherein, described in the data that receive carry uplink power control word TPC and up transmission simultaneous bias SS;
The first comparing unit, for comparing with the SIR thresholding setting in advance described SIR;
Adjustment unit, for when described SIR is more than or equal to described SIR thresholding, determines that described TPC and SS are effective, and adjusts strengthening transmitted power and the transmitting time of uplink physical channel E-PUCH by described TPC and SS.
7. device according to claim 6, is characterized in that, also comprises:
Acquiring unit, for after definite described SIR is more than or equal to described SIR thresholding, the correlation of the data that receive described in obtaining;
The second comparing unit, for comparing described correlation and predefined associated gate limit value;
The first determining unit, when being greater than pre-stored associated gate limit value when described correlation, determines that described TPC and SS are effective.
8. device according to claim 7, it is characterized in that, described correlation comprises: the correlation of absolute value maximum in three correlations that three orthogonal sequences distributing to described TPC and SS are carried out obtaining after relevant treatment with the described data that receive respectively, and/or mixed automatic retransfer request HARQ reply indicator sequence with described in the data that receive carry out the absolute value of the correlation that obtains after relevant treatment.
9. device according to claim 6, is characterized in that, also comprises:
The second determining unit, for after described correlation and predefined associated gate limit value are compared, if determine described TPC and SS invalid, do not adjust transmitted power and the transmitting time of described E-PUCH.
10. according to the device described in any one in claim 6 to 9, it is characterized in that, also comprise:
Setting unit, for before estimating the SIR of these data that receive, sets in advance described SIR thresholding and/or associated gate limit value by emulation and/or system debug.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105451318A (en) * | 2014-07-31 | 2016-03-30 | 展讯通信（上海）有限公司 | Transmitting power control system and method and mobile terminal |
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| CN101741434A (en) * | 2008-11-14 | 2010-06-16 | 普天信息技术研究院有限公司 | Closed loop power control method |
| CN102149121A (en) * | 2011-03-22 | 2011-08-10 | 中兴通讯股份有限公司 | Discontinuous transmission method for user terminal detection and user terminal in TD-SCDMA (Division-Synchronization Code Division Multiple Access) system |
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