CN106301728A - A kind of enhancement mode Physical Downlink Control Channel processing method and processing device - Google Patents

Abstract

The invention discloses a kind of enhancement mode Physical Downlink Control Channel (ePDCCH) processing method, terminal determines the resource element (RE) that candidate's control code that ePDCCH carries is corresponding；The RE that described candidate's control code is corresponding is descrambled, and carries out solving rate-matched to the candidate's control code after descrambling；Be deinterleaved the candidate's control code after solving rate-matched, blind Detecting processes；The validity judge is carried out to described blind Detecting verifies correct candidate's control code according to the mode decision scheme preset.The invention also discloses a kind of ePDCCH processing means.

Description

A kind of enhancement mode Physical Downlink Control Channel processing method and processing device

Technical field

The present invention relates to enhancement mode Physical Downlink Control Channel (enhanced Physical in moving communicating field Downlink Control Channel, ePDCCH) correlation technique that processes, particularly relate to a kind of ePDCCH Processing method and processing device.

Background technology

In order to strengthen the capacity of Long Term Evolution (LTE, Long Term Evolution) system control channels, R11 proposes a kind of ePDCCH channel.EPDCCH take Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel) a part of resource, adopt between ePDCCH and PDSCH Work by the mode of frequency division multiplexing.

Terminal relates to blind Detecting in the processing procedure to ePDCCH and processes, but, existing ePDCCH's In processing procedure before performing blind Detecting, owing to the data resource belonging to different candidate's control code not being divided From, so that follow-up blind Detecting complex disposal process degree is high and is inconvenient to realize；Process in described blind Detecting During relate to CRC (CRC, Cyclical Redundancy Check) process, but, CRC check itself there is also the possibility made mistakes.Once candidate's control code generation flase drop, causes truly needing Candidate's control code is dropped, it will cause the exception of LTE system descending scheduling, uplink authorization etc., serious shadow Ring LTE system performance；Further, since different candidate's control code search volumes is likely to occur overlap, cause Same candidate's control code duplicate detection under different degree of polymerization grades out, seriously adds the negative of terminal Load.

Therefore it provides a kind of ePDCCH processing scheme, it is possible at the blind Detecting in facilitating ePDCCH to process Reason, can effectively reduce again the probability of flase drop and duplicate detection, it has also become problem demanding prompt solution.

Summary of the invention

In view of this, embodiment of the present invention expectation provides a kind of ePDCCH processing method and processing device, can either Blind Detecting in facilitating ePDCCH to process processes, and can effectively reduce again the probability of flase drop and duplicate detection.

For reaching above-mentioned purpose, the technical scheme of the embodiment of the present invention is achieved in that

Embodiments providing a kind of ePDCCH processing method, described method includes:

Terminal determines resource element (RE, the Resource that candidate's control code that ePDCCH carries is corresponding Element)；

The RE that described candidate's control code is corresponding is descrambled, and the candidate's control code after descrambling is solved Rate-matched；

Be deinterleaved the candidate's control code after solving rate-matched, blind Detecting processes；

Carry out effectiveness according to the mode decision scheme preset and sentence described blind Detecting verifies correct candidate's control code Certainly.

In such scheme, the RE that candidate's control code of the described ePDCCH of determination carrying is corresponding includes:

Determine the antenna port that candidate's control code that ePDCCH carries is corresponding, according to time domain suitable after first frequency domain On the RE of the antenna port running time-frequency resource that described candidate's control code is mapped to correspondence by sequence, determine described candidate The RE that control code is corresponding.

In such scheme, the described solution rate-matched that carries out the candidate's control code after descrambling includes:

Determine the code word size M of the candidate's control code after descrambling, if N times of N*M of described code word size is little In the size of the data volume of described candidate's control code channel bearing, then the candidate's control code after descrambling is solved Rate-matched merging treatment；If the value of described N*M is more than or equal to the number of described candidate's control code channel bearing According to the size of amount, then the candidate's control code after descrambling being carried out solves rate-matched punching transparent transmission and processes；Wherein, N is positive number.

In such scheme, described carry out solving after rate-matched to the candidate's control code after descrambling, described method Also include:

Storage carries out solving the candidate's control code data after rate-matched, and records described candidate's control code channel and hold The data volume carried.

In such scheme, described to solving, the candidate's control code after rate-matched is deinterleaved, blind Detecting processes Before, described method also includes:

When determining the value of described N*M more than the size of the data volume of described candidate's control code channel bearing, right Carry out the candidate's control code after solving rate-matched punching transparent transmission and carry out zero padding process of punching.

In such scheme, the mode decision scheme that described foundation is preset is to verifying correct candidate's control in described blind Detecting Code processed carries out the validity judge and includes:

Judge the original position verifying the search volume of correct candidate's control code in the current blind Detecting obtained with The blind Detecting obtained verifies the original position whether phase of other correct candidate's control code search volume With, if the rising of the original position of the search volume of current candidate control code and other candidate's control code search volume Beginning position is the most different, then judge that current candidate's control code is as effective candidate's control code；

If the original position of the search volume of current candidate control code existing and current candidate control code search sky Between the identical candidate's control code of original position, then obtain the polymerization of described identical candidate's control code further Degree grade；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade (AL, Aggregation Level)=1, it is determined that through the candidate that folding coding out gate limit value is big The effectiveness of control code is higher；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL > 1, then abandon described identical candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL=1, then abandon current candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL > 1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value.

The embodiment of the present invention additionally provides a kind of ePDCCH processing means, and described device is positioned at terminal, described Device comprises determining that module, the first processing module, the second processing module and the validity judge module；Wherein,

Described determine module, for determining the RE that candidate's control code that ePDCCH carries is corresponding；

Described first processing module, for descrambling the RE that described candidate's control code is corresponding, and to solution Candidate's control code after disturbing carries out solving rate-matched；

Described second processing module, for solve the candidate's control code after rate-matched be deinterleaved, blind check Survey processes；

Described the validity judge module, for correct to verification in described blind Detecting according to the mode decision scheme preset Candidate's control code carry out the validity judge.

In such scheme, described determine module, specifically for determining candidate's control code pair that ePDCCH carries The antenna port answered, maps to the antenna of correspondence according to the order of time domain after first frequency domain by described candidate's control code On the RE of port running time-frequency resource, determine the RE that described candidate's control code is corresponding.

In such scheme, described first processing module, specifically for determining the code of the candidate's control code after descrambling Word length M, if N times of N*M of described code word size is less than the data of described candidate's control code channel bearing The size of amount, then carry out solving rate-matched merging treatment to the candidate's control code after descrambling；If described N*M's Candidate after descrambling more than or equal to the size of the data volume of described candidate's control code channel bearing, is then controlled by value Code carries out solving rate-matched punching transparent transmission and processes；Wherein, N is positive number.

In such scheme, described device also includes memory module, carries out the time after solving rate-matched for storage Selected control code data, and record the data volume of described candidate's control code channel bearing.

In such scheme, described second processing module, it is additionally operable to the value determining described N*M more than described time When selecting the size of data volume of control code channel bearing, to the candidate's control carried out after solving rate-matched punching transparent transmission Code processed carries out zero padding process of punching.

In such scheme, described the validity judge module, specifically for judging the current blind Detecting lieutenant colonel obtained The original position testing the search volume of correct candidate's control code and the blind Detecting obtained verify correct The original position of other candidate's control code search volume is the most identical, if the search volume of current candidate control code Original position the most different from the original position of other candidate's control code search volume, then judge current candidate Control code is effective candidate's control code；

If the original position of the search volume of current candidate control code existing and current candidate control code search sky Between the identical candidate's control code of original position, then obtain the polymerization of described identical candidate's control code further Degree grade；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL=1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL > 1, then abandon described identical candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL=1, then abandon current candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL > 1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value.

The ePDCCH processing method and processing device that the embodiment of the present invention is provided, terminal determines that ePDCCH carries Resource element RE corresponding to candidate's control code；The RE that described candidate's control code is corresponding is descrambled, and Carry out solving rate-matched to the candidate's control code after descrambling；Candidate's control code after solving rate-matched is solved Interweave, blind Detecting processes；Control described blind Detecting verifies correct candidate according to the mode decision scheme preset Code carries out the validity judge.So, the blind Detecting during ePDCCH can either be facilitated to process processes, and again can Effectively reduce the probability of flase drop and duplicate detection, and be applicable to carrier aggregation technology, save ePDCCH Process time and physical resource.

Accompanying drawing explanation

Fig. 1 is the transfer resource structural representation being divided into according to time domain and frequency domain；

Fig. 2 is the schematic diagram mapping resource element and numbering；

Fig. 3 is the embodiment of the present invention one ePDCCH process flow schematic diagram；

Fig. 4 is the embodiment of the present invention two ePDCCH process flow schematic diagram；

Fig. 5 is that embodiment of the present invention ePDCCH processing means forms structural representation.

Detailed description of the invention

In LTE communication system, the transfer resource structure being divided into according to time domain and frequency domain is as follows: time maximum Between unit be the radio frames of 10ms, be divided into the subframe of 10 1ms, each subframe is divided into again two The time slot of 0.5ms.For conventional cyclic prefix, each time slot is made up of 7 OFDM symbol, for expanding Exhibition Cyclic Prefix, each time slot is made up of 6 OFDM symbol.On frequency domain, every 12 sub-carrier wave set Become a unit resource (altogether taking 180kHz bandwidth), therefore, a unit resource on frequency domain, time A time interval resource on territory constitutes a Resource Block (RB, Resource Block), as it is shown in figure 1, Wherein, 11 is Resource Block (RB), forResource element (RE)；12 be resource element RE (k, l)。

Physical Resource Block shared by ePDCCH is to (PRB-pair, Physical Resource Block-pair) Position indicated by high-rise wireless heterogeneous networks (RRC, Radio Resource Control) signaling.Often Configurable most two ePDCCH of individual user terminal (UE, User Equipment) gather (ePDCCH Sets), each ePDCCH set comprises 2,4 or 8 PRB-pair, and base station can be according to logical The concrete condition flexible allocation ePDCCH total number resource of letter link.

In order to effectively configure ePDCCH running time-frequency resource, LTE R11 system adds two special resources Allocation unit: strengthen RE group (eREG, enhanced RE group) and strengthen control Channel Elements (eCCE, enhanced Control Channel Element)；One eCCE comprises 4 or 8 eREG.In one PRB-pair, fixed packet is containing 16 eREG (numbering: 0～15)；At each PRB-pair In, after first frequency domain, time domain carries out 0 to 15 circulations successively successively to all RE (removing demodulated reference signal) Numbering, as shown in Figure 2；One eREG is made up of all RE identical with its numbering and (removes by Legacy Downlink control region, cell reference signals Cell-RS and channel state information reference signals CSI-RS Shared RE)；This mapping method makes the RE resource in an eREG be evenly distributed on whole On PRB-pair, balance the receptivity of all eREG.

EPDCCH supports the distribution of two kinds of resource, i.e. there are two kinds of ePDCCH transmission means: concentrate Formula (Localized) ePDCCH transmission and distributed (Distributed) ePDCCH transmit, and specifically adopt Use which kind of transmission means, base station after distributing according to communication link treatment, conveyed to the end in community by signaling End；Wherein, centralized ePDCCH transmission can be effectively improved spectrum efficiency, and it is typically employed in base station energy In the case of enough getting reliable channel condition information, and distributed ePDCCH transmission, it is typically employed in In the case of base station does not relies on channel condition information, the vigorousness of ePDCCH can be strengthened；

Specifically, X is gathered for descending sub frame i, ePDCCH_m, m=1 or 2, can be used for ePDCCH The eCCE index of transmission is N_ECCE,m,i-1, and the eREG numbering corresponding to eCCEn is as follows:

Mapping for centralized ePDCCH, the eREG comprised is numbered: PRB-pair index is

Mapping for distributed ePDCCH, the eREG comprised is numbered: PRB-pair index is

Wherein, It is the number of eREG included in an eCCE,It it is the number of eCCE included in a PRB-pair.EPDCCH gathers X_m(m=1 Or 2) in the PRB-pair that comprises numberedAs shown in Table 1, under different scenes, each eCCE The number of comprised eREG；

Table one

In embodiments of the present invention, terminal determines the RE that candidate's control code that ePDCCH carries is corresponding；Right RE corresponding to described candidate's control code descrambles, and carries out solving speed to the candidate's control code after descrambling Join；Be deinterleaved the candidate's control code after solving rate-matched, blind Detecting processes；According to the judgement preset Strategy carries out the validity judge to verifying correct candidate's control code in described blind Detecting.

Embodiment one

Fig. 3 show the embodiment of the present invention one ePDCCH process flow schematic diagram；As it is shown on figure 3, Embodiment of the present invention ePDCCH processing method includes:

Step 301: terminal determines the RE that candidate's control code that ePDCCH carries is corresponding；

In embodiments of the present invention, the type of described candidate's control code includes three kinds, be respectively as follows: TYPE_A, TYPE_B and TYPE_C；Wherein,

Candidate's control code of TYPE_A type comprises Downlink Control Information (DCI, Downlink Control Information)format 1/DCI format 1B/DCI format 1D/DCI format 2/DCI format 2A/DCI format 2B/DCI format 2C/DCI format 2D；

Candidate's control code of TYPE_B type comprises DCI format 0/DCI format 1A；

Candidate's control code of TYPE_C type comprises DCI format 4.

This step comprises determining that the antenna port that candidate's control code that ePDCCH carries is corresponding, according to first frequency Behind territory on the RE of the antenna port running time-frequency resource that described candidate's control code is mapped to correspondence by the order of time domain, Determine the RE that described candidate's control code is corresponding；

Here, the antenna port that candidate's control code of the described ePDCCH of determination carrying is corresponding includes:

Transmitting for centralized ePDCCH, antenna port p corresponding to candidate's control code is determined by following formula:

$n^{\′}=n_{ECCE,low}{\mathrm{modN}}_{ECCE}^{RB}+n_{RNTI}\mathrm{modmin}(N_{ECCE}^{EPDCCH},N_{ECCE}^{RB}),---\left(1\right)$

Wherein, n_ECCE,lowECCE is used by ePDCCH set (set) carries this candidate's control code Minimum index value, n_RNTIThe RNTI value covered is added for this candidate's control code,It is a PRB-pair In the eCCE number that comprises.As shown in Table 2, for candidate's control under the different scene of centralized ePDCCH transmission The antenna port that code processed is corresponding, after the value of n' determines, can obtain the antenna that described candidate's control code is corresponding Port.

Table two

Table three show under different ePDCCH forms eCCE that corresponding ePDCCH channel is used Number, i.e.

Table three

Transmitting for distributed ePDCCH, (k l) is alternately mapped to two antennas to the RE in an eREG Port, in subframe, (k=0, l=0) position starts, first frequency domain time domain again, from the beginning of antenna port 107, When system is arranged in conventional cyclic prefix, the antenna port p ∈ { 107,109} that described candidate's control code is corresponding； When system is arranged in extended cyclic prefix, the antenna port p ∈ { 107,108} that described candidate's control code is corresponding.

Further, time on the RE of the antenna port running time-frequency resource that described candidate's control code is mapped to correspondence, The position of described RE (k, l) is the eREG present position corresponding to described candidate's control code, and described RE (k l) is not believed by cell reference signals (Cell-RS, Cell-Reference Signal) and channel status in position Breath reference signal (CSI-RS, Channel State Information-Reference Signal) takies, and institute (k l) is positioned at this subframe ePDCCH and initiates OFDM symbol or the OFDM after it to state the position of RE Symbol, and before being positioned at next subframe.

Further, centralized ePDCCH is transmitted, according to agreement, obtain equation below (2) and (3):

$ereg\_i=\left({\mathrm{nmodN}}_{ECCE}^{RB}\right)+{\mathrm{jN}}_{ECCE}^{RB};---\left(2\right)$

IfBeing substituted into (2), (3) obtain:

$ereg\_i=\left(\right({\mathrm{KN}}_{ECCE}^{RB}+l){\mathrm{modN}}_{ECCE}^{RB})+{\mathrm{jN}}_{ECCE}^{RB}={\mathrm{lmodN}}_{ECCE}^{RB}+{\mathrm{jN}}_{ECCE}^{RB};---\left(4\right)$

And then can obtain:

$ereg\_{\mathrm{imodN}}_{ECCE}^{RB}=(l+{\mathrm{jN}}_{ECCE}^{RB}){\mathrm{modN}}_{ECCE}^{RB}=\left({\mathrm{lmodN}}_{ECCE}^{RB}\right)+{\mathrm{jN}}_{ECCE}^{RB}{\mathrm{modN}}_{ECCE}^{RB}=l;---\left(6\right)$

Finally given by (5), (6): $n=rb\_num\_i*N_{ECCE}^{RB}+ereg\_{\mathrm{imodN}}_{ECCE}^{RB};---\left(7\right)$

Wherein,PRB-pair for RE place numbers, and ereg_i is RE The eREG numbering at place, n is the eCCE numbering at RE place；I.e. can be concentrated according to formula (7) In the case of the transmission of formula ePDCCH, (k, l), with will to be subordinate to the RE of running time-frequency resource with described candidate's control code The data resource being under the jurisdiction of different candidate's control code separates, it is achieved candidate's control code resource demapping.

Distributed ePDCCH is transmitted, according to agreement, obtains equation below (8) and (9):

$rb\_num\_i=(n+jmax(1,N_{RB}^{X_m}/N_{EREG}^{ECCE})){\mathrm{modN}}_{RB}^{X_m};---\left(9\right)$

If $n=K*N_{RB}^{X_m}+l,(K<N_{ECCE}^{RB},1<N_{RB}^{X_m}),$ Being substituted into (8), (9) obtain:

$ereg\_i=k+{\mathrm{jN}}_{ECCE}^{RB};---\left(10\right)$

$\begin{array}{c}rb\_num\_i=(k*N_{RB}^{X_m}+l+j\max (1,N_{RB}^{X_m}/N_{EREG}^{ECCE})){\mathrm{modN}}_{RB}^{X_m}\\ =(l+j\max (1,N_{RB}^{X_m}/N_{EREG}^{ECCE})){\mathrm{modN}}_{RB}^{X_{{}_m}}\end{array};---\left(11\right)$

BecauseSo having:

$ereg\_{\mathrm{imodN}}_{ECCE}^{RB}=(K+{\mathrm{jN}}_{ECCE}^{RB}){\mathrm{modN}}_{ECCE}^{RB}={\mathrm{kmodN}}_{ECCE}^{RB}=k;---\left(12\right)$

(12) are substituted into (10), obtain:

$j=(ereg\_i-ereg\_{\mathrm{imodN}}_{ECCE}^{RB})/N_{ECCE}^{RB};---\left(13\right)$

I.e. $j=ereg\_i/N_{ECCE}^{RB};---\left(14\right)$

$jxm=jmax(1,N_{RB}^{X_m}/N_{EREG}^{ECCE})=(ereg\_i/N_{ECCE}^{RB})max(1,N_{RB}^{X_m}/N_{EREG}^{ECCE});---\left(15\right)$

According to (11), if $\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right)>rb\_num\_i;---\left(16\right)$

Then, $l=N_{RB}^{X_m}+rb\_num\_i-\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right);---\left(17\right)$

Otherwise, $l=rb\_num\_i-\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right);---\left(18\right)$

According to (12), (16), (17) and (18), finally give

Wherein,PRB-pair for RE place numbers, and ereg_i is RE The eREG numbering at place, n is the eCCE numbering at RE place；I.e. can be distributed according to formula (19) In the case of the transmission of formula ePDCCH, (k, l), with will to be subordinate to the RE of running time-frequency resource with described candidate's control code The data resource being under the jurisdiction of different candidate's control code separates, it is achieved candidate's control code resource demapping.So, Blind Detecting in facilitating follow-up ePDCCH to process processes.

Further, candidate's control code of described ePDCCH carrying can have one or more, and this step is complete Become determines that the resource element RE that all candidate's control codes that ePDCCH carries are corresponding.

Further, described in the embodiment of the present invention, ePDCCH processing method is applicable to carrier aggregation technology, Under state of carrier aggregation, this step is accomplished that component carrier a (1≤a≤B；Wherein, B is component carrier Number) resource element RE (k, determination process l) of running time-frequency resource of upper all candidate's control codes；Wherein, Described carrier aggregation technology includes that the scheduling of carrier aggregation Independent Carrier Wave and carrier aggregation are across carrier dispatching；

In lte-a system, each downlink component carrier may there is ePDCCH carrying this component is carried The downlink resource distribution of ripple and the ascending resource mandate to corresponding upstream components carrier wave, this situation referred to as carries Ripple polymerization Independent Carrier Wave scheduling；Described carrier aggregation ePDCCH on carrier dispatching, i.e. one-component carrier wave The resource distribution on another component carrier can be dispatched and data are transmitted.

Step 302: the RE that described candidate's control code is corresponding is descrambled, and the candidate after descrambling is controlled Code carries out solving rate-matched；

Here, described the RE that described candidate's control code is corresponding carried out descrambling include:

According to descrambling scrambler sequence c (n) of ePDCCH, the RE that described candidate's control code is corresponding is descrambled；

Wherein, descrambling scrambler sequence c (n) of ePDCCH is:

C (n)=(x₁(n+N_C)+x₂(n+N_C))mod 2；Wherein,

x₁(n+31)=(x₁(n+3)+x₁(n))mod 2；

x₂(n+31)=(x₂(n+3)+x₂(n+2)+x₂(n+1)+x₂(n))mod 2；

N_C=1600, x₁(0)=1, x₁(n)=0, n=1,2 ..., 30；

Sequence x₂Scramble initial value be:Wherein, m is ePDCCH Set numbers, m=0 or 1；n_sIt it is the timeslot number (0～19) in LTE system；Configure for high level Parameter.

EPDCCH descrambles, and needs to be respectively directed to two collection merging rows and produces the scrambler of each set, described right RE corresponding to described candidate's control code carries out descrambling and is accomplished that all candidates to ePDCCH carrying control The descrambling of code, i.e. to being under the jurisdiction of different ePDCCH set and being under the jurisdiction of the RE of different candidate's control code and carry out Descrambling.

Further, the candidate's control code after descrambling carries out solve rate-matched to include:

Determine the code word size M of the candidate's control code after descrambling, if N times of N*M of described code word size is little In the size of the data volume of described candidate's control code channel bearing, then the candidate's control code after descrambling is solved Rate-matched merging treatment；If the value of described N*M is more than or equal to the number of described candidate's control code channel bearing According to the size of amount, then the candidate's control code after descrambling being carried out solves rate-matched punching transparent transmission and processes；Wherein, Described N is positive number, specifically can be set according to being actually needed, and in one embodiment, described N is 3.

Here, determine that the code word size M of the candidate's control code after descrambling includes: foundation LTE system bandwidth, The systematic parameters such as carrier aggregation type, determine the code word size M of the candidate's control code after descrambling.

Further, under state of carrier aggregation, this step is accomplished that component carrier a (1≤a≤B；Its In, B is component carrier number) go up the descrambling of all candidate's control codes, solve rate matching procedure.

Further, after this step, described method also includes: storage carries out the candidate after solving rate-matched Control code data, and record the data volume of described candidate's control code channel bearing；Concrete, can store to Machine access memorizer (Random Access Memory) etc.；

Here, after carrying out solving rate-matched to the candidate's control code after descrambling, perform solving rate-matched After the storage of candidate's control code data, when carrying out solving rate matching procedure to the candidate's control code after descrambling Middle execution be solve rate-matched merge time, performed solution rate-matched merge after perform described storage, can Save physical memory resources.

Step 303: be deinterleaved the candidate's control code after solving rate-matched, blind Detecting processes；

Before this step, described method also includes:

When determining the value of described N*M more than the size of the data volume of described candidate's control code channel bearing, right Carry out the candidate's control code after solving rate-matched punching transparent transmission and carry out zero padding process of punching；It is to say, when really When the value of fixed described N*M is more than the size of the data volume of described candidate's control code channel bearing, it is known that storage Solution rate-matched after candidate's control code data be surely through solve rate-matched punching transparent transmission after candidate's control code Data, need to perform punching zero padding and process, and the quantity of zero padding is according to described candidate's control code channel of record The data volume of carrying and the code word size of described candidate's control code determine；

Described candidate's control code to carrying out after solving rate-matched punching transparent transmission carries out punching zero padding process specifically For: each candidate's control code carried out after solving rate-matched punching transparent transmission is carried out zero padding process of punching successively, I.e. each candidate's control code is carried out serial process.

Further, described it is deinterleaved including to solving the candidate's control code after rate-matched:

To candidate's control code being sequentially written according to Column Row after solution rate-matched, then according to column permutation Rule carries out column permutation, then with sequentially reading of arranging again in advance, completes deinterleaving process, it is achieved solve speed Data are sent to carry out blind detection process by the data rearrangement after joining with the order completed so that base station sends；

Described column permutation rule is as shown in Table 4；

Table four

Here, it is achieved described column permutation Main Basis interleaving matrix, described matrix includes 32 row fixed, The line number of matrix is determined by the code word size of candidate's control code.

Further, the candidate's control code after deinterleaving carries out blind Detecting process to include:

Determine the search volume of the candidate's control code after described deinterleaving, to deinterleaving in described search volume After candidate's control code carry out folding coding, Radio Network Temporary Identifier (RNTI, Radio Network Tempory Identity) value goes to cover and CRC process；

Here, in order to support link circuit self-adapting, and reduce terminal detection complexity, ePDCCH resource as far as possible Map in units of eCCE.The code word size of the candidate's control code according to carrying and channel status, base station can Select to use degree of polymerization L ∈ { 1,2,4,8,16,32} one candidate's control code of carrying, the referred to as eCCE degree of polymerization Grade (AL, Aggregation Level), channel status good (bad) can select relatively low (higher) ECCE degree of polymerization grade；Terminal not only needs to search for candidate's control code place in ePDCCH resource area The original position of eCCE, in addition it is also necessary to search base station sends the degree of polymerization grade that candidate's control code is used, rises Beginning position is referred to as the search volume of this candidate's control code to degree of polymerization grade end position；

Described determine described deinterleaving after the search volume of candidate's control code include:

FoundationAfter determining described deinterleaving The search volume of candidate's control code；Wherein,

I=0 ..., L-1；B=n_CI(during carrier aggregation), b=0 (during non-carrier polymerization)；Described n_CIFor clothes The carrier wave instructions field (CIF, Carrier Indicator Field) of business community, i.e. Serving cell index；

It is L for Serving cell ePDCCH set p, degree of polymerization grade, L ∈ { the candidate's control code number on 1,2,4,8,16,32}；

N_ECCE,p,kFor the eCCE sum in descending sub frame k, ePDCCH set p；

Y_p,k=(A_p·Y_p,k-1)mod D；Wherein, Y_p,-1=n_RNTI≠ 0, A₀=39827, A₁=39829, D=65537,n_sFor timeslot number, n_RNTIValue for RNTI；

Here, described Y_p,kFor pseudo random parameters, the eCCE original position of candidate's control code can be made with subframe numbers And Termination ID and change, so can avoid the candidate's control code between multiple terminals in a descending sub frame The probability clashed.

In embodiments of the present invention, it is deinterleaved, at blind Detecting solving the candidate's control code after rate-matched Reason is the serial process to the candidate's control code after solution rate-matched.

Further, under state of carrier aggregation, this step is accomplished that component carrier a (1≤a≤B；Its In, B is component carrier number) go up the deinterleaving of candidate's control code of carrying, blind detection process, i.e. Serial process to the candidate's control code after solution rate-matched；Carrier aggregation is under carrier dispatching scene, to many Candidate's control code of individual Serving cell carries out blind Detecting parallel, saves the time that ePDCCH processes；And it is right The blind Detecting of the candidate's control code being under the jurisdiction of on each component carrier carries out serial process, saves physical area.

Step 304: enter verifying correct candidate's control code in described blind Detecting according to the mode decision scheme preset Row the validity judge；

This step specifically includes: judge to verify in the current blind Detecting obtained the search of correct candidate's control code The original position in space verifies other correct candidate's control code search volume in the blind Detecting obtained Original position is the most identical, if the original position of the search volume of current candidate control code controls with other candidate The original position of code search volume is the most different, then judge that current candidate's control code is as effective candidate's control code；

If the original position of other candidate's control code search volume exists and current candidate control code search volume The identical candidate's control code of original position, then obtain the degree of polymerization of described identical candidate's control code further Grade；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL=1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL > 1, then abandon described identical candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL=1, then abandon current candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL > 1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value.

In embodiments of the present invention, carry out effectiveness and sentence described blind Detecting verifies correct candidate's control code It it is all certainly the validity judge of candidate's control code for identical DCI type.

Further, before this step, described method also includes: be arranged on all polymerization grade, AL=1 Candidate's control code priority minimum, the candidate's control code priority on other polymerization grade of AL > 1 is identical, And identical for the priority between the candidate's control code on same polymerization grade, and for identical excellent Candidate's control code of first level, higher through the effectiveness of the big candidate's control code of folding coding out gate limit value, Will obtain and bigger choose possibility.

Further, under state of carrier aggregation, this step is accomplished that component carrier a (1≤a≤B；Its In, B is component carrier number) the validity judge process of candidate's control code of upper carrying, i.e. to blind Candidate's control code after detection performs serial process.

Fig. 4 is the embodiment of the present invention two ePDCCH process flow schematic diagram；It is applied to carrier aggregation field Under scape, as shown in Figure 4, embodiment of the present invention ePDCCH processing method includes:

Step 401: terminal determines the RE that on component carrier a, candidate's control code of carrying is corresponding；

This step comprises determining that the antenna end that on component carrier a, candidate's control code of ePDCCH carrying is corresponding Mouthful, according to the order of time domain after first frequency domain, described candidate's control code is mapped to the antenna port time-frequency money of correspondence On the RE in source, determine the RE that described candidate's control code is corresponding；Wherein, 1≤a≤B；B is component carrier Number；

Wherein, the described antenna port determining that on component carrier a, candidate's control code of ePDCCH carrying is corresponding Including:

Centralized ePDCCH is transmitted,

Foundation $n^{\&prime;}=n_{ECCE,low}{\mathrm{modN}}_{ECCE}^{RB}+n_{RNTI}\mathrm{modmin}(N_{ECCE}^{EPDCCH},N_{ECCE}^{RB})$ Determine the value of n'；Wherein, n_ECCE,lowBy ePDCCH set (set) carries the minimum index value of the used eCCE of this candidate's control code, n_RNTIThe RNTI value covered is added for this candidate's control code,It is the eCCE comprised in a PRB-pair Number；After the value of n' determines, right according to the n' antenna port corresponding from candidate's control code under different scenes Should be related to and can obtain the antenna port that described candidate's control code is corresponding；Wherein, described n' under different scenes The corresponding relation of the antenna port that candidate's control code is corresponding is as shown in Table 2；

Transmitting for distributed ePDCCH, (k l) is alternately mapped to two antennas to the RE in an eREG Port, in subframe, (k=0, l=0) position starts, first frequency domain time domain again, from the beginning of antenna port 107, When system is arranged in conventional cyclic prefix, the antenna port p ∈ { 107,109} that described candidate's control code is corresponding； When system is arranged in extended cyclic prefix, the antenna port p ∈ { 107,108} that described candidate's control code is corresponding.

Further, time on the RE of the antenna port running time-frequency resource that described candidate's control code is mapped to correspondence, The position of described RE (k, l) is the eREG present position corresponding to described candidate's control code, and described RE (k, l) is not taken by Cell-RS and CSI-RS, and (k l) is positioned at this subframe in the position of described RE in position EPDCCH initiates OFDM symbol or the OFDM symbol after it, and before being positioned at next subframe.

Further, centralized ePDCCH is transmitted,

FoundationDetermine the RE institute that described candidate's control code is corresponding ECCE numbering n；WhereinPRB-pair for RE place numbers, Ereg_i is the eREG numbering at RE place；

Distributed ePDCCH is transmitted,

Foundation $\begin{array}{c}rb\_num\_i=(k*N_{RB}^{X_m}+l+j\max (1,N_{RB}^{X_m}/N_{EREG}^{ECCE}\left)\right)\mathrm{mod}{N}_{RB}^{X_m}\\ =(l+j\max (1,N_{RB}^{X_m}/N_{EREG}^{ECCE}\left)\right)\mathrm{mod}{N}_{RB}^{X_m}\end{array},$

$ereg\_{\mathrm{imodN}}_{ECCE}^{RB}=(K+{\mathrm{jN}}_{ECCE}^{RB}){\mathrm{modN}}_{ECCE}^{RB}={\mathrm{kmodN}}_{ECCE}^{RB}=k,$

$jxm=jmax(1,N_{RB}^{X_m}/N_{EREG}^{ECCE})=(ereg\_i/N_{ECCE}^{RB})max(1,N_{RB}^{X_m}/N_{EREG}^{ECCE});$

If $\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right)>rb\_num\_i;$

Then, $l=N_{RB}^{X_m}+rb\_num\_i-\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right);$

Otherwise, $l=rb\_num\_i-\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right);$

Can determine that eCCE numbering n at RE place corresponding to described candidate's control code,Wherein,PRB-pair for RE place numbers, and ereg_i is the eREG at RE place Numbering；So, the data resource being under the jurisdiction of different candidate's control code is separated, it is achieved candidate's control code resource Demapping.

Further, on described component carrier a, candidate's control code of ePDCCH carrying can have multiple, this The RE that all candidate's control codes that ePDCCH carries that what step completed determine that are corresponding.

Step 402: the RE that described candidate's control code is corresponding is descrambled, and the candidate after descrambling is controlled Code carries out solving rate-matched；

Here, described the RE that described candidate's control code is corresponding carried out descrambling include:

According to descrambling scrambler sequence c (n) of ePDCCH, the RE that described candidate's control code is corresponding is descrambled；

Wherein, descrambling scrambler sequence c (n) of ePDCCH is:

C (n)=(x₁(n+N_C)+x₂(n+N_C))mod 2；Wherein,

x₁(n+31)=(x₁(n+3)+x₁(n))mod 2；

x₂(n+31)=(x₂(n+3)+x₂(n+2)+x₂(n+1)+x₂(n))mod 2；

N_C=1600, x₁(0)=1, x₁(n)=0, n=1,2 ..., 30；

Sequence x₂Scramble initial value be:Wherein, m is ePDCCH Set numbers, m=0 or 1；n_sIt it is the timeslot number (0～19) in LTE system；Configure for high level Parameter.

The described solution rate-matched that carries out the candidate's control code after descrambling includes:

Determine the code word size M of the candidate's control code after descrambling, if N times of N*M of described code word size is little In the size of the data volume of described candidate's control code channel bearing, then the candidate's control code after descrambling is solved Rate-matched merging treatment；If the value of described N*M is more than or equal to the number of described candidate's control code channel bearing According to the size of amount, then the candidate's control code after descrambling being carried out solves rate-matched punching transparent transmission and processes；Wherein, Described N is positive number, specifically can be set according to being actually needed, and in one embodiment, described N is 3；

Here, determine that the code word size M of the candidate's control code after descrambling includes: foundation LTE system bandwidth, The systematic parameters such as carrier aggregation type, determine the code word size M of the candidate's control code after descrambling.

In the present embodiment, this step is accomplished that component carrier a (1≤a≤B；B is component carrier number) The descrambling of upper all candidate's control codes, solution rate matching procedure.

Step 403: storage carries out the candidate's control code data after solving rate-matched, and records described candidate control The data volume of code channel bearing processed；

Here, after carrying out solving rate-matched to the candidate's control code after descrambling, perform solving rate-matched After the storage of candidate's control code data, when carrying out solving rate matching procedure to the candidate's control code after descrambling Middle execution be solve rate-matched merge time, performed solution rate-matched merge after perform described storage, can Save physical memory resources.

Step 404: after judging descrambling, whether the value of N times of the code word size M of candidate's control code is more than described The size of the data volume of candidate's control code channel bearing, if it does, perform step 405；Otherwise perform step Rapid 406；

Here, it is more than the big of the data volume of described candidate's control code channel bearing when the value determining described N*M Hour, it is known that the candidate's control code data after the solution rate-matched of storage are through solving rate-matched punching transparent transmission surely After candidate's control code data, need perform punching zero padding process；N is integer, in embodiments of the present invention, N=3.

Step 405: the candidate's control code carried out after solving rate-matched punching transparent transmission is carried out zero padding process of punching, Then step 406 is performed；

This step includes: carry out successively beating to each candidate's control code carried out after solving rate-matched punching transparent transmission Hole zero padding processes, and i.e. each candidate's control code is carried out serial process；The quantity of described zero padding is according to record The data volume of described candidate's control code channel bearing and the code word size of described candidate's control code determine.

Step 406: be deinterleaved candidate's control code, blind Detecting processes；

Here, it is deinterleaved including to candidate's control code: to candidate's control code according to the order of Column Row Write, then carries out column permutation according to column permutation rule, then with sequentially reading of arranging again in advance, completes to solve and hand over Knit process, it is achieved solve the data rearrangement after rate-matched, with the order completed so that base station sends, data are sent out Go out to carry out blind detection process；Described column permutation rule is as shown in Table 4.

Candidate's control code after deinterleaving carries out blind Detecting process include:

Determine the search volume of the candidate's control code after described deinterleaving, to deinterleaving in described search volume After candidate's control code carry out folding coding, RNTI value goes to cover and CRC check processes.

This step is accomplished that component carrier a (1≤a≤B；Wherein, B is component carrier number) upper carrying The deinterleaving of candidate's control code, blind detection process, i.e. to solving the candidate's control code after rate-matched Serial process；Carrier aggregation is under carrier dispatching scene, to candidate's control code of multiple Serving cells and advance Row blind Detecting, saves the time that ePDCCH processes；And to the candidate's control being under the jurisdiction of on each component carrier The blind Detecting of code processed carries out serial process, saves physical area.

Step 407: enter verifying correct candidate's control code in described blind Detecting according to the mode decision scheme preset Row the validity judge；

This step specifically includes: judge to verify in the current blind Detecting obtained the search of correct candidate's control code The original position in space verifies other correct candidate's control code search volume in the blind Detecting obtained Original position is the most identical, if the original position of the search volume of current candidate control code controls with other candidate The original position of code search volume is the most different, then judge that current candidate's control code is as effective candidate's control code；

If the original position of other candidate's control code search volume exists and current candidate control code search volume The identical candidate's control code of original position, then obtain the degree of polymerization of described identical candidate's control code further Grade；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL=1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL > 1, then abandon described identical candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL=1, then abandon current candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL > 1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value.

In embodiments of the present invention, carry out effectiveness and sentence described blind Detecting verifies correct candidate's control code It it is all certainly the validity judge of candidate's control code for identical DCI type.

Further, before this step, described method also includes: be arranged on all polymerization grade, AL=1 Candidate's control code priority minimum, the candidate's control code priority on other polymerization grade of AL > 1 is identical, And identical for the priority between the candidate's control code on same polymerization grade, and for identical excellent Candidate's control code of first level, processes the effectiveness of the big candidate's control code of out gate limit value more through folding coding Height, will obtain and bigger choose possibility.

Step 408: terminate this handling process.

Fig. 5 is that embodiment of the present invention ePDCCH processing means forms structural representation；Described device is applied to Terminal, as it is shown in figure 5, the embodiment of the present invention ePDCCH processing means composition comprise determining that module 51, First processing module the 52, second processing module 53 and the validity judge module 54；Wherein,

Described determine module 51, for determining the RE that candidate's control code that ePDCCH carries is corresponding；

Described first processing module 52 is for descrambling the RE that described candidate's control code is corresponding and right Candidate's control code after descrambling carries out solving rate-matched；

Described second processing module 53, for solve the candidate's control code after rate-matched be deinterleaved, blind Detection processes；

Described the validity judge module 54, for just verifying in described blind Detecting according to the mode decision scheme preset True candidate's control code carries out the validity judge.

Further, described module 51 is determined, specifically for determining candidate's control code pair that ePDCCH carries The antenna port answered, maps to the antenna of correspondence according to the order of time domain after first frequency domain by described candidate's control code On the RE of port running time-frequency resource, determine the RE that described candidate's control code is corresponding；

Wherein, the antenna port that the described candidate's control code determining that module 51 determines that ePDCCH carries is corresponding Including:

Centralized ePDCCH is transmitted,

Described determine module 51 foundation $n^{\&prime;}=n_{ECCE,low}{\mathrm{modN}}_{ECCE}^{RB}+n_{RNTI}\mathrm{modmin}(N_{ECCE}^{EPDCCH},N_{ECCE}^{RB})$ Determine n' Value；Wherein, n_ECCE,lowECCE is used by ePDCCH set (set) carries this candidate's control code Minimum index value, n_RNTIThe RNTI value covered is added for this candidate's control code,It is a PRB-pair In the eCCE number that comprises；After the value of n' determines, corresponding from candidate's control code under different scenes according to n' The corresponding relation of antenna port can obtain the antenna port that described candidate's control code is corresponding；Wherein, described n' The corresponding relation of the antenna port corresponding from candidate's control code under different scenes is as shown in Table 2；

Distributed ePDCCH is transmitted, described determine module 51 by an eREG RE (k, l) hand over For being mapped to two antenna ports, in subframe, (k=0, l=0) position starts, and first frequency domain time domain again, from sky Line cap 107 starts, when system is arranged in conventional cyclic prefix, and the antenna that described candidate's control code is corresponding Port p ∈ { 107,109}；When system is arranged in extended cyclic prefix, the antenna that described candidate's control code is corresponding Port p ∈ { 107,108}.

Further, described determine that described candidate's control code is reflected by module 51 according to the order of time domain after first frequency domain Time on the RE of the antenna port running time-frequency resource being incident upon correspondence, (k l) is described candidate control in the position of described RE EREG present position corresponding to code processed, and (k, l) not by Cell-RS and CSI-RS in the position of described RE Take, and (k l) is positioned at this subframe ePDCCH and initiates OFDM symbol or its it in the position of described RE After OFDM symbol, and before being positioned at next subframe.

Further, centralized ePDCCH is transmitted,

Described determine module 51 foundationDetermine that described candidate is controlled ECCE numbering n at the RE place that code processed is corresponding；WhereinFor RE place PRB-pair numbering, ereg_i be RE place eREG numbering；

Distributed ePDCCH is transmitted,

Foundation $\begin{array}{c}rb\_num\_i=(k*N_{RB}^{X_m}+l+j\max (1,N_{RB}^{X_m}/N_{EREG}^{ECCE}\left)\right)\mathrm{mod}{N}_{RB}^{X_m}\\ =(l+j\max (1,N_{RB}^{X_m}/N_{EREG}^{ECCE}\left)\right)\mathrm{mod}{N}_{RB}^{X_m}\end{array},$

$ereg\_{\mathrm{imodN}}_{ECCE}^{RB}=(K+{\mathrm{jN}}_{ECCE}^{RB}){\mathrm{modN}}_{ECCE}^{RB}={\mathrm{kmodN}}_{ECCE}^{RB}=k,$

$jxm=jmax(1,N_{RB}^{X_m}/N_{EREG}^{ECCE})=(ereg\_i/N_{ECCE}^{RB})max(1,N_{RB}^{X_m}/N_{EREG}^{ECCE});$

If $\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right)>rb\_num\_i;$

Then, $l=N_{RB}^{X_m}+rb\_num\_i-\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right);$

Otherwise, $l=rb\_num\_i-\left({\mathrm{jxmmodN}}_{RB}^{X_m}\right);$

Can determine that eCCE numbering n at RE place corresponding to described candidate's control code,Wherein,PRB-pair for RE place numbers, and ereg_i is the eREG at RE place Numbering；So, the data resource being under the jurisdiction of different candidate's control code is separated, it is achieved candidate's control code resource Demapping.

Further, described first processing module 52, specifically for the descrambling scrambler sequence according to ePDCCH The RE that described candidate's control code is corresponding is descrambled by c (n)；

Wherein, descrambling scrambler sequence c (n) of ePDCCH is:

C (n)=(x₁(n+N_C)+x₂(n+N_C))mod 2；Wherein,

x₁(n+31)=(x₁(n+3)+x₁(n))mod 2；

x₂(n+31)=(x₂(n+3)+x₂(n+2)+x₂(n+1)+x₂(n))mod 2；

N_C=1600, x₁(0)=1, x₁(n)=0, n=1,2 ..., 30；

Sequence x₂Scramble initial value be:Wherein, m is ePDCCH Set numbers, m=0 or 1；n_sIt it is the timeslot number (0～19) in LTE system；Configure for high level Parameter.

Further, described first processing module 52, specifically for determining the code of the candidate's control code after descrambling Word length M, if N times of N*M of described code word size is less than the data of described candidate's control code channel bearing The size of amount, then carry out solving rate-matched merging treatment to the candidate's control code after descrambling；If described N*M's Candidate after descrambling more than or equal to the size of the data volume of described candidate's control code channel bearing, is then controlled by value Code carries out solving rate-matched punching transparent transmission and processes；Wherein, N is positive number, and in one embodiment, described N is 3；

Here, described first processing module 52 is according to system ginsengs such as LTE system bandwidth, carrier aggregation types Number, determines the code word size M of the candidate's control code after descrambling.

Further, described device also includes memory module 55, carries out the time after solving rate-matched for storage Selected control code data, and record the data volume of described candidate's control code channel bearing.

Further, described second processing module 53, it is additionally operable to the value determining described N*M more than described time When selecting the size of data volume of control code channel bearing, to the candidate's control carried out after solving rate-matched punching transparent transmission Code processed carries out zero padding process of punching.

Further, described second processing module 53, control specifically for the candidate after determining described deinterleaving Code search volume, in described search volume to deinterleave after candidate's control code carry out folding coding, RNTI value is gone to cover and is processed with CRC check.

Further, described the validity judge module 54, specifically for judging the current blind Detecting lieutenant colonel obtained The original position testing the search volume of correct candidate's control code and the blind Detecting obtained verify correct The original position of other candidate's control code search volume is the most identical, if the search volume of current candidate control code Original position the most different from the original position of other candidate's control code search volume, then judge current candidate Control code is effective candidate's control code；

If the original position of the search volume of current candidate control code existing and current candidate control code search sky Between the identical candidate's control code of original position, then obtain the polymerization of described identical candidate's control code further Degree grade；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL=1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL > 1, then abandon described identical candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL=1, then abandon current candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL > 1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value.

Further, described the validity judge module 54, it is additionally operable to be arranged on all polymerization grade, AL=1 Candidate's control code priority minimum, the candidate's control code priority on other polymerization grade of AL > 1 is identical, And identical for the priority between the candidate's control code on same polymerization grade, and for identical excellent Candidate's control code of first level, processes the effectiveness of the big candidate's control code of out gate limit value more through folding coding Height, will obtain and bigger choose possibility.

In embodiments of the present invention, described module the 51, first processing module the 52, second processing module is determined 53 and the validity judge module 54 all can be by central processing unit (CPU, the Central Processing in terminal Or digital signal processor (DSP, Digital Signal Processor) or field-programmable gate array Unit) Row (FPGA, Field Programmable Gate Array) or integrated circuit (ASIC, Application Specific Integrated Circuit) realize, described memory module 55 can be realized by memorizer.

The above, only present pre-ferred embodiments, it is not intended to limit protection scope of the present invention.

Claims (12)

1. an enhancement mode Physical Downlink Control Channel ePDCCH processing method, it is characterised in that described Method includes:

Terminal determines the resource element RE that candidate's control code that ePDCCH carries is corresponding；

The RE that described candidate's control code is corresponding is descrambled, and the candidate's control code after descrambling is solved Rate-matched；

Be deinterleaved the candidate's control code after solving rate-matched, blind Detecting processes；

Carry out effectiveness according to the mode decision scheme preset and sentence described blind Detecting verifies correct candidate's control code Certainly.

Method the most according to claim 1, it is characterised in that the described time determining that ePDCCH carries The RE selecting control code corresponding includes:

Determine the antenna port that candidate's control code that ePDCCH carries is corresponding, according to time domain suitable after first frequency domain On the RE of the antenna port running time-frequency resource that described candidate's control code is mapped to correspondence by sequence, determine described candidate The RE that control code is corresponding.

Method the most according to claim 1 or claim 2, it is characterised in that described to the candidate's control after descrambling Code carries out solving rate-matched and includes:

Determine the code word size M of the candidate's control code after descrambling, if N times of N*M of described code word size is little In the size of the data volume of described candidate's control code channel bearing, then the candidate's control code after descrambling is solved Rate-matched merging treatment；If the value of described N*M is more than or equal to the number of described candidate's control code channel bearing According to the size of amount, then the candidate's control code after descrambling being carried out solves rate-matched punching transparent transmission and processes；Wherein, N is positive number.

Method the most according to claim 1 or claim 2, it is characterised in that described to the candidate's control after descrambling After code carries out solving rate-matched, described method also includes:

Storage carries out solving the candidate's control code data after rate-matched, and records described candidate's control code channel and hold The data volume carried.

Method the most according to claim 3, it is characterised in that described to the candidate's control after solution rate-matched Code processed is deinterleaved, blind Detecting process before, described method also includes:

When determining the value of described N*M more than the size of the data volume of described candidate's control code channel bearing, right Carry out the candidate's control code after solving rate-matched punching transparent transmission and carry out zero padding process of punching.

Method the most according to claim 1 or claim 2, it is characterised in that the mode decision scheme that described foundation is preset Carry out the validity judge include described blind Detecting verify correct candidate's control code:

Judge the original position verifying the search volume of correct candidate's control code in the current blind Detecting obtained with The blind Detecting obtained verifies the original position whether phase of other correct candidate's control code search volume With, if the rising of the original position of the search volume of current candidate control code and other candidate's control code search volume Beginning position is the most different, then judge that current candidate's control code is as effective candidate's control code；

If the original position of the search volume of current candidate control code existing and current candidate control code search sky Between the identical candidate's control code of original position, then obtain the polymerization of described identical candidate's control code further Degree grade；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL=1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL > 1, then abandon described identical candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL=1, then abandon current candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL > 1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value.

7. an ePDCCH processing means, described device is positioned at terminal, it is characterised in that described device Comprise determining that module, the first processing module, the second processing module and the validity judge module；Wherein,

Described determine module, for determining the RE that candidate's control code that ePDCCH carries is corresponding；

Described first processing module, for descrambling the RE that described candidate's control code is corresponding, and to solution Candidate's control code after disturbing carries out solving rate-matched；

Described second processing module, for solve the candidate's control code after rate-matched be deinterleaved, blind check Survey processes；

Described the validity judge module, for correct to verification in described blind Detecting according to the mode decision scheme preset Candidate's control code carry out the validity judge.

Device the most according to claim 7, it is characterised in that described determine module, specifically for determining The antenna port corresponding to candidate's control code of ePDCCH carrying, according to the order of time domain after first frequency domain by described On the RE of the antenna port running time-frequency resource that candidate's control code maps to correspondence, determine described candidate's control code pair The RE answered.

9. according to device described in claim 7 or 8, it is characterised in that described first processing module, specifically The code word size M of the candidate's control code after determining descrambling, if N times of N*M of described code word size is little In the size of the data volume of described candidate's control code channel bearing, then the candidate's control code after descrambling is solved Rate-matched merging treatment；If the value of described N*M is more than or equal to the number of described candidate's control code channel bearing According to the size of amount, then the candidate's control code after descrambling being carried out solves rate-matched punching transparent transmission and processes；Wherein, N is positive number.

10. according to device described in claim 7 or 8, it is characterised in that described device also includes storing mould Block, carries out the candidate's control code data after solving rate-matched for storage, and records described candidate's control code letter The data volume of road carrying.

11. devices according to claim 9, it is characterised in that described second processing module, are additionally operable to When determining the value of described N*M more than the size of the data volume of described candidate's control code channel bearing, to carrying out Solve the candidate's control code after rate-matched punching transparent transmission and carry out zero padding process of punching.

12. according to device described in claim 7 or 8, it is characterised in that described the validity judge module, Specifically for judging the current blind Detecting obtained verifies the start bit of the search volume of correct candidate's control code The blind Detecting put and obtained verifies the original position of other correct candidate's control code search volume whether Identical, if the original position of the search volume of current candidate control code and other candidate's control code search volume Original position is the most different, then judge that current candidate's control code is as effective candidate's control code；

If the original position of the search volume of current candidate control code existing and current candidate control code search sky Between the identical candidate's control code of original position, then obtain the polymerization of described identical candidate's control code further Degree grade；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL=1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value；

If degree of polymerization grade AL=1 of described identical candidate's control code, and the polymerization of current candidate control code Degree grade AL > 1, then abandon described identical candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL=1, then abandon current candidate's control code；

If degree of polymerization grade AL of described identical candidate's control code > 1, and the polymerization of current candidate control code Degree grade AL > 1, it is determined that higher through the effectiveness of the big candidate's control code of folding coding out gate limit value.