CN104219036A - EPDCCH (Enhanced-Physical Downlink Control Channel) blind detection method, resource mapping method and device - Google Patents
EPDCCH (Enhanced-Physical Downlink Control Channel) blind detection method, resource mapping method and device Download PDFInfo
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Abstract
The embodiment of the invention discloses an EPDCCH (Enhanced-Physical Downlink Control Channel) blind detection method, a resource mapping method and a resource mapping device. The blind detection method comprises the steps that: UE pre-processes data transmitted by a time-frequency resource for transmitting E-PDCCH, works out sum of eCCE (Enhanced-Control Channel Element) according to length of the pre-processed data, and performs numbering sequentially; the UE performs blind detection according to a received E-PDCCH time-frequency resource distributing scheme in an E-PDCCH configuration information unit that is dispatched by a base station. Therefore, according to the EPDCCH blind detection method, the base station makes the E-PDCCH time-frequency resource distributing scheme and informs the UE, and then the UE performs blind detection according to indication of the received distributing scheme. Compared with the existing mode without indication, the EPDCCH blind detection method achieves improved accuracy and reduced calculated amount.
Description
Technical field
The present invention relates to communication technical field, be specifically related to EPDCCH blind checking method, method for mapping resource and device.
Background technology
In LTE-A (Long Term Evolution-Advanced) system, Downlink Control Information (DCI) is mainly used in bearing downlink dispatching distribution principle, uplink scheduling request, power control command.
DCI can be carried on E-PDCCH (Enhanced-Physical Downlink Control Channel, the Physical Downlink Control Channel of enhancing).E-PDCCH can be carried on a continuous in logic L eCCE (Enhanced-Control Channel Element, the control channel unit of enhancing).L is polymerization grade.L value can be 32,16,8,4,2,1.
LTE-A system is that in each user (UE) definition subframe, DCI is carried in one group of limited running time-frequency resource position.Due to uplink downlink need to dispatch alternately multiple UE simultaneously, therefore, LTE-A system must support to send in a subframe multiple scheduling messages (being also DCI).
In existing LTE-A system, base station is the corresponding polymerization grade of DCI of not notifying UE to issue, and the particular location of eCCE in above-mentioned one group of limited running time-frequency resource position of carrying DCI do not notified in base station yet.Therefore, UE need to attempt solving DCI information by blind Detecting.How to reduce the amount of calculation of blind Detecting, become current research hot topic.
Summary of the invention
In view of this, the object of the embodiment of the present invention is to provide EPDCCH blind checking method, method for mapping resource and device, to reduce the amount of calculation of blind Detecting.
For achieving the above object, the embodiment of the present invention provides following technical scheme:
According to the first aspect of the embodiment of the present invention, a kind of Physical Downlink Control Channel E-PDCCH blind checking method of enhancing is provided, comprising:
User equipment (UE) carries out preliminary treatment to the data of transmitting on the running time-frequency resource for transmitting E-PDCCH, uses the length gauge of data after pretreatment to calculate the sum of control channel unit eCCE number consecutively; Described preliminary treatment at least comprises that channel equalization, demodulation disturb;
UE, according to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting.
In conjunction with first aspect, in the possible implementation of the first, described allocative decision is used to indicate base station determines the mapping direction of eCCE according to the odd even of user radio network temporary mark RNTI; Described mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction;
Described UE, according to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting and comprises:
Described UE, according to the odd even of self RNTI, determines blind Detecting direction; Described blind Detecting direction is eCCE numbering ascending order direction or eCCE numbering descending direction; Described blind Detecting direction is consistent with the mapping direction of base station maps eCCE;
Described UE carries out blind Detecting by determined blind Detecting direction to the Downlink Control Information DCI expecting.
In conjunction with the possible implementation of first aspect the first, in the possible implementation of the second, the described Downlink Control Information DCI to expectation carries out blind Detecting and comprises: to the DCI of first expectation, carry out total blindness's detection by determined blind Detecting direction and polymerization grade order from high to low; When i-1 the DCI expecting is while detecting successfully, adopts polymerization grade that the DCI of i-1 expectation the is corresponding initial polymerization grade of DCI blind Detecting as i expectation, by determined blind Detecting direction, the DCI of i expectation is detected; I is greater than 1 integer.
In conjunction with the possible implementation of first aspect the second, in the third possible implementation, the described Downlink Control Information DCI to expectation carries out blind Detecting and also comprises: in the time that i-1 the DCI expecting detects unsuccessfully, to i the DCI expecting, carry out total blindness's detection by determined blind Detecting direction and polymerization grade order from high to low.
In conjunction with first aspect the second or the third possible implementation, in the 4th kind of possible implementation, polymerization grade corresponding to DCI that i-1 of described employing expected is as the initial polymerization grade of DCI blind Detecting of i expectation, by determined blind Detecting direction, i the DCI expecting detected and comprised: carry out after blind Detecting failure in the polymerization grade with initial, be better than corresponding channel quality while detecting i-1 the DCI expecting if detect i channel quality corresponding to DCI of expecting, reduce polymerization grade and detect; Otherwise, improve polymerization grade and detect.
In conjunction with the 4th kind of possible implementation of first aspect, in the 5th kind of possible implementation, polymerization grade corresponding to DCI that i-1 of described employing expected is as the initial polymerization grade of DCI blind Detecting of i expectation, by determined blind Detecting direction, i the DCI expecting also detected and comprised: after reducing or improve polymerization grade and detecting unsuccessfully, traveling through not detected polymerization grade detects, until detect successfully, or all not detected polymerization grades are traveled through.
In conjunction with first aspect, in the 6th kind of possible implementation, described allocative decision is used to indicate base station the E-PDCCH with same polymeric grade is placed in same search volume; First E-PDCCH in described search volume is as main E-PDCCH, the described E-PDCCH with same polymeric grade is as auxiliary E-PDCCH, and described main E-PDCCH is at least for carrying the auxiliary E-PDCCH number of polymerization grade, DCI message format and described search volume of auxiliary E-PDCCH; Described auxiliary E-PDCCH is for bearing downlink control information DCI;
Described UE, according to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting and comprises:
Described UE, by polymerization grade order from high to low or order from low to high, detects the main E-PDCCH in described search volume;
If detect successfully, extract the auxiliary E-PDCCH number in polymerization grade, DCI message format and the described search volume of auxiliary E-PDCCH of main E-PDCCH carrying, use auxiliary E-PDCCH number in polymerization grade, DCI message format and the described search volume of described auxiliary E-PDCCH to detect the DCI of the upper carrying of auxiliary E-PDCCH.
According to the second aspect of the embodiment of the present invention, a kind of method for mapping resource is provided, comprising:
Physical Downlink Control Channel E-PDCCH time-frequency resource allocating scheme is determined in base station;
ECCE mapping is carried out according to determined E-PDCCH time-frequency resource allocating scheme in base station;
Base station is carried described E-PDCCH time-frequency resource allocating scheme by E-PDCCH configuration information unit and is handed down to user equipment (UE).
In conjunction with second aspect, in the possible implementation of the first, described E-PDCCH time-frequency resource allocating scheme is used to indicate the mapping direction of determining eCCE according to the odd even of user radio network temporary mark RNTI; Described mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction;
Described according to determined E-PDCCH time-frequency resource allocating scheme, carry out eCCE mapping and comprise:
Determine the mapping direction of the control channel unit eCCE strengthening according to the odd even of user radio network temporary mark RNTI; Described mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction;
According to definite mapping direction, carry out eCCE mapping.
In conjunction with the possible implementation of second aspect the first, in the possible implementation of the second, the described mapping direction according to the definite control channel unit eCCE strengthening of the odd even of user radio network temporary mark RNTI comprises: user is divided into groups according to the odd even of RNTI, obtain the first grouping and the second grouping; To the user in described the first grouping, determine that mapping direction is eCCE numbering ascending order direction; To the user in described the second grouping, determine that mapping direction is eCCE numbering descending direction; The mapping direction that described basis is definite, carries out eCCE mapping and comprises: to the user in described the first grouping, carry out eCCE mapping by described eCCE numbering ascending order order; To the user in described the second grouping, carry out eCCE mapping by described eCCE numbering descending order.
In the possible implementation of second aspect the first or the possible implementation of second aspect the second, in the third possible implementation, in described first group, user's RNTI is odd number, in described second group, user's RNTI is even number, or, in described first group, user's RNTI is even number, and user's RNTI is odd number in described second group.
In conjunction with second aspect, in the 4th kind of possible implementation, described E-PDCCH time-frequency resource allocating scheme is used to indicate base station the E-PDCCH with same polymeric grade is placed in same search volume; First E-PDCCH in described search volume is as main E-PDCCH, the described E-PDCCH with same polymeric grade is as auxiliary E-PDCCH, and described main E-PDCCH is at least for carrying the auxiliary E-PDCCH number of polymerization grade, DCI message format and described search volume of auxiliary E-PDCCH; Described auxiliary E-PDCCH is for bearing downlink control information DCI;
Described according to determined E-PDCCH time-frequency resource allocating scheme, carry out eCCE mapping and comprise:
Base station is placed on the E-PDCCH with same polymeric grade in same search volume as auxiliary E-PDCCH;
An E-PDCCH is added as main E-PDCCH in base station in described search volume; Auxiliary E-PDCCH number in polymerization grade, DCI message format and the described search volume of the auxiliary E-PDCCH of the upper carrying of described main E-PDCCH; Described auxiliary E-PDCCH is for bearing downlink control information DCI;
Each E-PDCCH in described search volume is carried on eCCE.
According to the third aspect of the embodiment of the present invention, a kind of Physical Downlink Control Channel E-PDCCH blind Detecting device of enhancing is provided, comprising:
Pretreatment unit, carries out preliminary treatment to the data of transmitting on the running time-frequency resource for transmitting E-PDCCH, uses the length gauge of data after pretreatment to calculate the sum of control channel unit eCCE number consecutively; Described preliminary treatment at least comprises that channel equalization, demodulation disturb;
Blind check unit, for the E-PDCCH time-frequency resource allocating scheme of carrying according to E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting.
According to the fourth aspect of the embodiment of the present invention, a kind of resource mapping apparatus is provided, comprising:
Allocative decision determining unit, for determining Physical Downlink Control Channel E-PDCCH time-frequency resource allocating scheme, and is handed down to user equipment (UE) by E-PDCCH configuration information unit;
Map unit, for according to determined E-PDCCH time-frequency resource allocating scheme, carries out eCCE mapping.
Visible, in the present embodiment, base station has been formulated E-PDCCH time-frequency resource allocating scheme and has been notified UE, and UE carries out blind Detecting according to the instruction of the allocative decision receiving.With existing mode without compared with instruction, can improve the hit rate of UE blind Detecting, reduce the amount of calculation of blind Detecting.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The method for mapping resource flow chart that Fig. 1 a provides for the embodiment of the present invention;
The E-PDCCH blind checking method flow chart that Fig. 1 b provides for the embodiment of the present invention;
Another flow chart of E-PDCCH blind checking method that Fig. 1 c provides for the embodiment of the present invention;
The another flow chart of E-PDCCH blind checking method that Fig. 2 provides for the embodiment of the present invention;
The eCCE mapping schematic diagram that Fig. 3 provides for the embodiment of the present invention;
The E-PDCCH blind checking method flow chart that Fig. 4 provides for the embodiment of the present invention;
The blind Detecting schematic diagram that Fig. 5 provides for the embodiment of the present invention;
The another flow chart of E-PDCCH blind checking method that Fig. 6 provides for the embodiment of the present invention;
Fig. 7 examines flow chart for the total blindness that the embodiment of the present invention provides;
The major-minor E-PDCCH mapping schematic diagram that Fig. 8 provides for the embodiment of the present invention;
The another flow chart of E-PDCCH blind checking method that Fig. 9 provides for the embodiment of the present invention;
The resource mapping apparatus exemplary plot that Figure 10 provides for the embodiment of the present invention;
The E-PDCCH blind Detecting device exemplary plot that Figure 11 provides for the embodiment of the present invention.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
First the embodiment of the present invention is improved the resource mapping method of eCCE in base station side, and while thinking follow-up UE blind Detecting, reducing amount of calculation provides prerequisite.
Refer to Fig. 1 a, the method for mapping resource that the embodiment of the present invention provides at least comprises the steps:
E-PDCCH time-frequency resource allocating scheme is determined in S101 ', base station, and is handed down to subscriber equipment (UE) by E-PDCCH configuration information unit (EPDCCH-Config information element);
More specifically, can use primary EPDCCH (main E-PDCCH) the field carrying E-PDCCH time-frequency resource allocating scheme of E-PDCCH configuration information unit.
ECCE mapping, according to determined E-PDCCH time-frequency resource allocating scheme, is carried out in S102 ', base station.
Accordingly, the E-PDCCH blind checking method of being carried out by a certain UE side can comprise the steps (refer to Fig. 1 b):
S101:UE carries out preliminary treatment to the data of transmitting on the running time-frequency resource for transmitting E-PDCCH, uses the length gauge of data after pretreatment to calculate the sum of control channel unit eCCE number consecutively;
Above-mentioned preliminary treatment at least comprises that channel equalization, demodulation disturb.
S102:UE, according to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting.
In the present embodiment, base station has been formulated E-PDCCH time-frequency resource allocating scheme and has been notified UE, and UE carries out blind Detecting according to the instruction of the allocative decision receiving.With existing mode without compared with instruction, can improve the hit rate of UE blind Detecting, reduce the amount of calculation of blind Detecting.
Plurality of distribution scheme can be formulated in base station, will introduce two kinds of eCCE mapping and blind Detecting under allocative decision below.
Allocative decision one:
Allocative decision one can be indicated the mapping direction of determining eCCE according to the odd even of user radio network temporary mark (RNTI); The mapping direction of eCCE is eCCE numbering ascending order direction or eCCE numbering descending direction.
Accordingly, refer to Fig. 1 c, above-mentioned steps S102 ' can specifically comprise the steps:
S1 ': the mapping direction of determining eCCE according to the odd even of user radio network temporary mark (RNTI).
S2 ': according to determined mapping direction, carry out eCCE mapping.
In other embodiments of the invention, refer to Fig. 2, above-mentioned steps S1 ' can further comprise:
S11 ': according to the odd even of RNTI, user is divided into groups, obtain the first grouping and the second grouping.
In first group, user's RNTI can be odd number, and user's RNTI is even number in second group.Or contrary, user's RNTI is even number in first group, user's RNTI is odd number in above-mentioned second group.
For example, suppose that one has 10 users, its RNTI value is respectively 1-10, is 1,3,5,7 by RNTI value, and 9 user is divided into one group, is 2,4,6,8 by RNTI value, and 10 user is divided into one group.
S12 ': to the user in the first grouping, determine that mapping direction is eCCE numbering ascending order direction, to the user in the second grouping, determine that mapping direction is eCCE numbering descending direction.
Accordingly, step S2 ' can further comprise:
S21 ': to the user in above-mentioned the first grouping, carry out eCCE mapping by above-mentioned eCCE numbering ascending order order;
S22 ': to the user in above-mentioned the second grouping, carry out eCCE mapping by above-mentioned eCCE numbering descending order.
For example, refer to Fig. 3, suppose that eCCE is numbered #0～#N-1.User RNTI value in the first grouping is 1,3,5., for this group user, its mapping direction is the ascending order starting from #0; And second grouping in user RNTI value be 2,4, for this group user, its mapping direction be the descending starting from #N-1.
ECCE is shone upon according to the odd even of user RNTI in base station, and issue after DCI message, the E-PDCCH blind checking method of being carried out by a certain UE side can comprise the steps (referring to Fig. 4):
S1, the data of transmitting on the running time-frequency resource for transmitting E-PDCCH are carried out to preliminary treatment, use the length gauge of data after pretreatment to calculate the sum (concrete mode is the number divided by RE in each eCCE) of eCCE number consecutively.
Above-mentioned preliminary treatment at least comprises that channel equalization, demodulation disturb.
It should be noted that, base station can be multiple UE and distributes same PRB couple.A PRB on can transmit the DCI of corresponding multiple UE, in addition, a PRB who distributes to UE on, base station also can issue multiple DCI for this UE.Therefore, UE and do not know the PRB that distributes to oneself in the data transmitted, which partial data is the DCI information that sends to oneself.Like this, UE need to own PRB on transmission data do unified processing.Step S1 can adopt existing mode to realize, and therefore not to repeat here.
The E-PDCCH of carrying DCI can send in one or more continuous eCCE in logic.Therefore, need eCCE to be numbered here, so that follow-up blind check.
It should be noted that, distribute the UE that same PRB is right, the sum of its eCCE obtaining, the eCCE carrying out numbering is identical.
The eCCE that assumed calculation goes out adds up to 20, data after pretreatment is divided into 20 segments and is numbered successively, the corresponding eCCE of every a bit of data.
S2, according to the odd even of RNTI, determine blind Detecting direction.
Blind Detecting direction specifically can be eCCE numbering ascending order direction or eCCE numbering descending direction.
Each user can determine according to own unique RNTI the resource blind Detecting direction of oneself, is according to eCCE ascending order or descending does blind check.
The blind Detecting direction of UE is consistent with the mapping direction that base station is its mapping eCCE.From aforementioned, base station is to carry out eCCE resource mapping according to the odd even of user's RNTI.
Still continue to use precedent, suppose the user that base station side is odd number for RNTI, the mapping direction of employing is eCCE numbering ascending order direction, the user who is even number to RNTI, and the mapping direction of employing is eCCE numbering descending direction.
In this step, if the RNTI value of certain UE is odd number, its blind Detecting direction is eCCE numbering ascending order direction, and if the RNTI value of this UE is even number, its blind Detecting direction is eCCE numbering descending direction.
S3, by determined blind Detecting direction to expect DCI carry out blind Detecting.
It should be noted that, although UE does not know the DCI form that base station sends, know the DCI that oneself is expected.Therefore, can carry out blind Detecting to the DCI expecting by determined blind Detecting direction.In the time of blind check, be that expectation DCI all in a subframe is carried out to blind Detecting.
It should be noted that, the corresponding abovementioned steps S101 of step S1, step S2 and S3 are the refinements of abovementioned steps S102.
Visible, in the present embodiment, UE, according to the odd even of the RNTI of self, can number ascending order or descending direction by eCCE, and the DCI expecting is carried out to blind Detecting.And early stage in base station side, carried out eCCE mapping according to the odd even of UE, performed, consistent with base station side mapping direction ascending order or the descending blind check of UE side, can improve the hit rate of UE blind Detecting, the amount of calculation of reduction blind Detecting.
By way of example, still refer to Fig. 3, base station side is carried DCI by eCCE descending order for user 4 has distributed eCCE#N-2 and eCCE#N-3.
For user 4, refer to Fig. 5, that supposes its eCCE calculating adds up to 10, and numbering is respectively #0～#9, wherein, the #N-1 in #9 corresponding diagram 3, the #N-2 in #8 corresponding diagram 3, the #N-3 in #7 corresponding diagram 3.If user 4 is by the mode of prior art, can number ascending order order by eCCE, the eCCE#0 side from Fig. 5 starts blind Detecting, can cause so meaningless detection.And in embodiments of the present invention, user 4 RNTI is even number, press eCCE numbering descending order, also from Fig. 5 eCCE#9 side start to carry out blind Detecting left, because the eCCE#8 in Fig. 5 and eCCE#7 carry its DCI, so soon can blind check success, thereby reduced the amount of calculation of blind Detecting.
How the DCI expecting is carried out to blind Detecting by introducing in detail below.
In other embodiments of the invention, refer to Fig. 6, the step S3 in above-mentioned all embodiment can further comprise:
S31, DCI to first expectation, carry out total blindness's detection by determined blind Detecting direction and polymerization grade order from high to low.
Before address, polymerization grade L value can be 32,16,8,4,2,1 etc.To the DCI of first expectation, be by polymerization grade order from high to low, also carry out total blindness's detection by 32 to 1 order.
More specifically, for each polymerization grade, UE can be according to this polymerization grade, determines UE dedicated search space and corresponding E-PDCCH candidate channel number.The starting point (initial eCCE) in UE dedicated search space determines (how to determine that starting point is prior art, therefore not to repeat here) by hash function.
Afterwards, UE extracts and starts L the symbol that eCCE carries backward from initial eCCE place RE, carries out subsequent bits level Check processing (comprising rate de-matching, Viterbi decoding and 16 CRC check).
Taking L=8 as example, that supposes eCCE that user 4 calculates adds up to 20, and numbering is respectively #0～#19.For L=8, the starting point in definite UE dedicated search space is #15, presses eCCE numbering descending order, and every 8 eCCE determine a corresponding E-PDCCH candidate channel, also: the each corresponding E-PDCCH candidate channel of #15～#8, #7～#0, altogether 2 E-PDCCH candidate channel.These 2 E-PDCCH candidate channel form the UE dedicated search space for L=8.
Again taking L=4 as example, that supposes eCCE that user 4 calculates adds up to 20, and numbering is respectively #0～#19.For L=4, the starting point in definite UE dedicated search space is #17, press eCCE numbering descending order, every 4 eCCE determine a corresponding E-PDCCH candidate channel, also: #17～#14, #13～#10, the each corresponding E-PDCCH candidate channel of #9～#6, #5～#2, totally 4 E-PDCCH candidate channel.These 4 E-PDCCH candidate channel form the UE dedicated search space for L=4.
For other polymerization grades, be also that so therefore not to repeat here.
Along with the increase of L, except a few cases, candidate channel number reduces.So, in this subframe of blind Detecting, when first DCI message, carry out according to polymerization grade order from high to low.Once retrieve correct DCI information from certain polymerization grade, the eCCE that carries so this data segment will not be used further to the lower polymerization grade of retrieval.
More specifically, determining after UE dedicated search space and corresponding E-PDCCH candidate channel number, can decode (rate de-matching, Viterbi decoding) to the E-PDCCH candidate channel in UE dedicated search space, and whether be correct DCI by CRC check.
In CRC check process, the DCI that UE can expect according to oneself carries out RNTI Information hiding verification in CRC check sequence.As correct in CRC check, successfully decoded.As verification failure, next the E-PDCCH candidate channel in UE dedicated search space is decoded, and carry out CRC inspection, by that analogy, until verification succeeds, or the equal verification failure of all E-PDCCH candidate channel.
Continue to use precedent, in the time of blind Detecting L=8, first user 4 can decode and CRC check to #15～#8, if verification succeeds is read corresponding DCI information, retains the polymerization grade (L=8) of this search.Now, without again to eCCE the data on #15～#8 carry out compared with the detection of oligomerization grade L=4, L=2, L=1.
If #15～#8 verification failure, continues the decoding data on #7～#0 and CRC check.As verification succeeds, read corresponding DCI information, retain the polymerization grade (L=8) of this search; If #7～#0 verification failure.Due to the equal verification failure of all E-PDCCH candidate channel now, reduce polymerization grade, L is taken as to 4, determine UE dedicated search space that L=4 is corresponding and corresponding E-PDCCH candidate channel number, similarly search for again afterwards.
So repeat, until solve correct DCI information, or traveled through all polymerization grades.
Step S31 can represent with the circulation process shown in Fig. 7.
S32, when i-1 the DCI expecting is while detecting successfully, adopts polymerization grade that the DCI of i-1 expectation the is corresponding initial polymerization grade of DCI blind Detecting as i expectation, by determined blind Detecting direction, the DCI of i expectation is detected.I is greater than 1 integer.
Expect that taking the 1st DCI and the 2nd expectation DCI are as example.Suppose, the DCI of the 1st expectation detects successfully, and its corresponding polymerization grade is L=8, and the DCI of the 2nd expectation will start with L=8, carry out blind Detecting.
More specifically, that supposes eCCE that user 4 calculates adds up to 20, and numbering is respectively #0～#19.For the DCI of the 2nd expectation, in the time of L=8, the starting point in definite UE dedicated search space is #10, press eCCE numbering descending order, every 8 eCCE determine a corresponding E-PDCCH candidate channel, also: #10～#3 corresponding an E-PDCCH candidate channel, totally 1 E-PDCCH candidate channel.This E-PDCCH candidate channel is carried out to subsequent bits level Check processing.
Visible, in the present embodiment, i DCI expecting is that to detect successful i-1 the polymerization grade of DCI of expecting be that blind Detecting is carried out in reference.This be because, in the case of the variations of twice scheduling is little, base station side is probably distributed same polymerization grade to i-1 the DCI expecting with i, taking the polymerization grade of i-1 DCI as initial polymerization grade, can improve to a certain extent the hit rate of blind Detecting, reduce the amount of calculation of blind Detecting.
In other embodiments of the invention, the step S3 in above-mentioned all embodiment also can comprise the steps:
In the time that i-1 the DCI expecting detects unsuccessfully, to i the DCI expecting, carry out total blindness's detection by determined blind Detecting direction and polymerization grade order from high to low.
Expect that taking the 1st DCI and the 2nd expectation DCI are as example (user 4), suppose, the DCI of the 1st expectation detects unsuccessfully, is similar to the DCI of the 1st expectation, the DCI of the 2nd expectation will be from L=32, by polymerization grade from high to low, eCCE numbering descending carries out blind Detecting.Corresponding description refers to aforementioned introduction herein, and therefore not to repeat here.
Certainly, carry out blind Detecting taking the polymerization grade that detects successful i-1 the DCI expecting as reference, possibility success, also may failure.
As detect successfully, read corresponding DCI information.
And as detected unsuccessfully, in order further to improve blind Detecting hit rate, reduce the amount of calculation of blind Detecting, in other embodiments of the invention, also can proceed as follows:
Carry out after blind Detecting failure in the polymerization grade with initial, be better than corresponding channel quality while detecting i-1 the DCI expecting if detect i channel quality corresponding to DCI of expecting, reduce polymerization grade and detect; Otherwise, improve polymerization grade and detect.
Also, if channel quality improves, reduce polymerization grade, otherwise improve polymerization grade.
More specifically, can determine that the variation of channel quality takes advantage of a favourable situation according to CQI (instruction of channel quality indicator channel quality) feedack.
Still continue to use precedent, suppose, the DCI of the 1st expectation detects successfully, and its corresponding polymerization grade is L=8.The DCI of the 2nd expectation will start with L=8, carry out blind Detecting.
As L=8 detects unsuccessfully, determining channel quality according to CQI improves, carry out blind Detecting with L=4 and (need to determine the starting point in UE dedicated search space, corresponding E-PDCCH candidate channel number, traversal E-PDCCH candidate channel is decoded, the inspection of CRC school, until verification succeeds, or the equal verification failure of all E-PDCCH candidate channel).
Otherwise, if channel quality variation, carry out blind Detecting with L=16 and (need to determine the starting point in UE dedicated search space, corresponding E-PDCCH candidate channel number, traversal E-PDCCH candidate channel is decoded, the inspection of CRC school, until verification succeeds, or the equal verification failure of all E-PDCCH candidate channel).
This is because the polymerization grade of twice DCI of the changes such as variations can be considered in base station.If channel quality variation, polymerization grade may be improved in base station, otherwise if channel quality improves, base station may reduce polymerization grade.The embodiment of the present invention, according to the adjustment characteristic of base station, is adjusted polymerization grade, to further improving blind Detecting hit rate, reduces the amount of calculation of blind Detecting.
Certainly, improving or reducing after polymerization grade, blind Detecting may be successful, also may failure.
If detect successfully, read corresponding DCI information.
And as detects unsuccessfully, above-mentioned " adopt the polymerization grade corresponding to DCI of i-1 expectation as initial polymerization grade, by determined blind Detecting direction, the DCI of i expectation is detected " also can comprise:
After reducing or improve polymerization grade and detecting unsuccessfully, travel through not detected polymerization grade and detect, until detect successfully, or traveled through all not detected polymerization grades.
Still continue to use precedent, the DCI of the 2nd expectation, taking L=8 as starting polymerization grade, carries out blind Detecting.After detecting unsuccessfully, according to CQI feedack, judge that channel quality improves, carry out blind Detecting with L=4, carrying out with L=4 after blind Detecting failure, the polymerization grade that other are not detected (L=32,16,2,1) is carried out blind Detecting trial by UE.Until detect successfully, or all not detected polymerization grades are traveled through.
Refer to aforementioned record herein for the concrete detection mode of each polymerization grade, therefore not to repeat here.
Allocative decision two:
E-PDCCH time-frequency resource allocating scheme two is used to indicate base station the E-PDCCH with same polymeric grade is placed on to same search volume as auxiliary E-PDCCH.Such benefit is, under the same search volume of UE side, has identical original position, and at least auxiliary E-PDCCH has identical polymerization grade, can detect more efficiently data.
And in existing mode, what the E-PDCCH of different polymerization grades disperseed is distributing.
First E-PDCCH in above-mentioned search volume is as main E-PDCCH, and aforementioned mention there is same polymeric grade E-PDCCH as auxiliary E-PDCCH.
Main E-PDCCH can be the same with the polymerization grade of auxiliary E-PDCCH, also can be different.
Wherein, main E-PDCCH at least can be used for carrying the contents such as the auxiliary E-PDCCH number in the polymerization grade, DCI message format, search volume of auxiliary E-PDCCH, and auxiliary E-PDCCH is for carrying DCI.
Refer to Fig. 8, suppose that eCCE is numbered #0～#N-1, the auxiliary E-PDCCH of the main E-PDCCH of L=2 and a L=4 is combined into a search volume by base station, the starting point of this search volume is #0, in this search volume, it is upper that main E-PDCCH is carried on 2 continuous in logic eCCE, and auxiliary E-PDCCH is carried on 4 continuous in logic eCCE.Between main and auxiliary E-PDCCH, may there is fragment.
In other embodiments of the invention, main E-PDCCH also can carry conventional DCI.
In addition, main E-PDCCH also can carry original position (or the original position of auxiliary E-PDCCH also can draw by polymerization rating calculation) and other information of each auxiliary E-PDCCH.
Based on above-mentioned E-PDCCH time-frequency resource allocating scheme, abovementioned steps S102 ' can specifically comprise:
Base station is placed on the E-PDCCH with same polymeric grade in same search volume as auxiliary E-PDCCH;
In Gai search volume, base station, add an E-PDCCH as main E-PDCCH;
Wherein, the content such as the auxiliary E-PDCCH number in the polymerization grade of the auxiliary E-PDCCH of the upper carrying of main E-PDCCH, DCI message format, search volume; Auxiliary E-PDCCH is used for carrying DCI;
Each E-PDCCH in search volume is carried on eCCE.
In base station, the each E-PDCCH in search volume is carried on eCCE, and issues after DCI message, the E-PDCCH blind checking method of being carried out by a certain UE side can comprise the steps (referring to Fig. 9):
S1, the data of transmitting on the running time-frequency resource for transmitting E-PDCCH are carried out to preliminary treatment, use the length gauge of data after pretreatment to calculate the sum (concrete mode is the number divided by RE in each eCCE) of eCCE number consecutively.
Detail refers to aforementioned record herein, and therefore not to repeat here.
S4, UE, by polymerization grade order from high to low or order from low to high, detect the main E-PDCCH in search volume.
Before address, polymerization grade L value can be 32,16,8,4,2,1 etc., therefore, UE is by the order of the order by 32 to 1 or 1 to 32, detects the main E-PDCCH in search volume.
More specifically, for each polymerization grade, UE can use hash function to determine the starting point of search volume, also, and the initial eCCE of main E-PDCCH in search volume.
Afterwards, UE extracts L the eCCE that starts backward to move from initial eCCE place RE, carries out subsequent bits level Check processing (comprising rate de-matching, Viterbi decoding and 16 CRC check).As correct in CRC check, successfully decoded.UE can read the auxiliary E-PDCCH number in polymerization grade, DCI message format and the search volume of auxiliary E-PDCCH of main E-PDCCH carrying.
In the situation that main E-PDCCH also carries conventional DCI, after successfully decoded, UE also can read the DCI of main E-PDCCH carrying.
Certainly, for a certain polymerization grade, if the main E-PDCCH in detection search volume is unsuccessful, can select other polymerization grades not detecting, detect the main E-PDCCH in search volume.By that analogy, until detect successfully, or all polymerization grades have all detected.
If S5 detects successfully, use the auxiliary E-PDCCH number in polymerization grade, DCI message format and search volume that extract, the upper auxiliary E-PDCCH carrying of main E-PDCCH, detect the DCI of the upper carrying of auxiliary E-PDCCH.
Suppose in step S4, when L=2, detect the main E-PDCCH success in search volume.The polymerization grade of the auxiliary E-PDCCH extracting is that the auxiliary E-PDCCH number in L=4, search volume is 2, calculate the original position of auxiliary E-PDCCH according to L=4, extract from the original position of auxiliary E-PDCCH 4 eCCE backward, carry out subsequent bits level Check processing (comprising rate de-matching, Viterbi decoding and 16 CRC check), until find expected DCI, or all auxiliary E-PDCCH all detect failure.
It should be noted that, the corresponding abovementioned steps S101 of step S1, step S4 and S5 are the refinements of abovementioned steps S102.
In the present embodiment, only in the time detecting main E-PDCCH, travel through polymerization grade and detect, after main E-PDCCH success, then extract the auxiliary E-PDCCH of content detection in main E-PDCCH.Owing to carrying the polymerization grade of auxiliary E-PDCCH in main E-PDCCH, therefore need not travel through polymerization grade and go detection, thereby reduce the amount of calculation of blind Detecting.
Corresponding with above-mentioned method for mapping resource, the embodiment of the present invention is claimed resource mapping apparatus also, and this device can be used as base station side, or is built in base station.
Figure 10 shows a kind of example arrangement of above-mentioned resource mapping apparatus, and it can comprise:
Allocative decision determining unit 101, for determining E-PDCCH time-frequency resource allocating scheme, and is handed down to UE by E-PDCCH configuration information unit;
Map unit 102, for according to determined E-PDCCH time-frequency resource allocating scheme, carries out eCCE mapping.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
In other embodiments of the invention, above-mentioned E-PDCCH time-frequency resource allocating scheme is used to indicate the mapping direction of determining eCCE according to the odd even of RNTI; Above-mentioned mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction.
Accordingly, according to determined E-PDCCH time-frequency resource allocating scheme, carry out eCCE mapping aspect, above-mentioned map unit 102 for:
Determine the mapping direction of the control channel unit eCCE strengthening according to the odd even of RNTI; Above-mentioned mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction.
According to definite mapping direction, carry out eCCE mapping.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
In other embodiments of the invention, aspect the mapping direction of the definite control channel unit eCCE strengthening of the odd even of RNTI, above-mentioned map unit 102 can be used for:
User is divided into groups according to the odd even of RNTI, obtain the first grouping and the second grouping;
To the user in above-mentioned the first grouping, determine that mapping direction is eCCE numbering ascending order direction;
To the user in above-mentioned the second grouping, determine that mapping direction is eCCE numbering descending direction.
Accordingly, according to definite mapping direction, the aspect of carrying out eCCE mapping, above-mentioned map unit 102 can be used for:
To the user in above-mentioned the first grouping, carry out eCCE mapping by above-mentioned eCCE numbering ascending order order;
To the user in above-mentioned the second grouping, carry out eCCE mapping by above-mentioned eCCE numbering descending order.
In first group, user's RNTI can be odd number, and user's RNTI is even number in second group.Or contrary, user's RNTI is even number in first group, user's RNTI is odd number in above-mentioned second group.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
In other embodiments of the invention, above-mentioned E-PDCCH time-frequency resource allocating scheme is used to indicate the E-PDCCH with same polymeric grade is placed in same search volume; First E-PDCCH in search volume, as main E-PDCCH, has the E-PDCCH of same polymeric grade as auxiliary E-PDCCH; Main E-PDCCH is at least for carrying the auxiliary E-PDCCH number of polymerization grade, DCI message format and search volume of auxiliary E-PDCCH; Auxiliary E-PDCCH is for bearing downlink control information DCI.
Accordingly, according to determined E-PDCCH time-frequency resource allocating scheme, carry out eCCE mapping aspect, above-mentioned map unit 102 for:
The E-PDCCH with same polymeric grade is placed in same search volume as auxiliary E-PDCCH;
In search volume, add an E-PDCCH as main E-PDCCH; Auxiliary E-PDCCH number in polymerization grade, DCI message format and the search volume of the auxiliary E-PDCCH of the upper carrying of main E-PDCCH; Auxiliary E-PDCCH is for bearing downlink control information DCI;
Each E-PDCCH in search volume is carried on eCCE.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
Corresponding with above-mentioned E-PDCCH blind checking method, the embodiment of the present invention is claimed E-PDCCH blind Detecting device also.This device can be used as subscriber equipment (UE), or the built-in module of UE.
Figure 11 shows a kind of example arrangement of above-mentioned E-PDCCH blind Detecting device, and it can comprise:
Pretreatment unit 1101, carries out preliminary treatment to the data of transmitting on the running time-frequency resource for transmitting E-PDCCH, uses the length gauge of data after pretreatment to calculate the sum of control channel unit eCCE number consecutively.
Above-mentioned preliminary treatment at least comprises that channel equalization, demodulation disturb.
Blind check unit 1102, for the E-PDCCH time-frequency resource allocating scheme of carrying according to E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting.
In other embodiments of the invention, the allocative decision in above-mentioned all embodiment can be used for indicating base station to determine the mapping direction of eCCE according to the odd even of RNTI; Above-mentioned mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction.
Accordingly, according to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carry out blind Detecting aspect, above-mentioned blind check unit 1102 for:
According to the odd even of RNTI, determine blind Detecting direction; Above-mentioned blind Detecting direction is eCCE numbering ascending order direction or eCCE numbering descending direction; The blind Detecting direction of certain UE is consistent with the mapping direction that base station is its mapping eCCE.From aforementioned, base station is to carry out eCCE resource mapping according to the odd even of user's RNTI.
By determined blind Detecting direction, the Downlink Control Information DCI expecting is carried out to blind Detecting.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
In other embodiments of the invention, to expect Downlink Control Information DCI carry out blind Detecting aspect, the blind check unit 1102 in above-mentioned all embodiment can be used for:
To the DCI of first expectation, carry out total blindness's detection by determined blind Detecting direction and polymerization grade order from high to low;
When i-1 the DCI expecting is while detecting successfully, adopts polymerization grade that the DCI of i-1 expectation the is corresponding initial polymerization grade of DCI blind Detecting as i expectation, by determined blind Detecting direction, the DCI of i expectation is detected;
I is greater than 1 integer.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
In other embodiments of the invention, above-mentioned to expect Downlink Control Information DCI carry out blind Detecting aspect, the blind check unit 1102 in above-mentioned all embodiment also can be used for:
In the time that i-1 the DCI expecting detects unsuccessfully, to i the DCI expecting, carry out total blindness's detection by determined blind Detecting direction and polymerization grade order from high to low.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
Certainly, carry out blind Detecting taking the polymerization grade that detects successful i-1 the DCI expecting as reference, possibility success, also may failure.
As detect successfully, corresponding DCI information is read in blind check unit 1102.
And as detected unsuccessfully, in other embodiments of the invention, polymerization grade corresponding to the DCI that expects i-1 of above-mentioned employing is as the initial polymerization grade of DCI blind Detecting of i expectation, by determined blind Detecting direction to i expect DCI carry out context of detection, the blind check unit 1102 in above-mentioned all embodiment for:
Be better than corresponding channel quality while detecting i-1 the DCI expecting if detect i channel quality corresponding to DCI of expecting, reduce polymerization grade and detect; Otherwise, improve polymerization grade and detect.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
Certainly, improving or reducing after polymerization grade, blind Detecting may be successful, also may failure.
As detect successfully, corresponding DCI information is read in blind check unit 1102.
And as detected unsuccessfully, in other embodiments of the invention, at the aspect of " adopting i-1 polymerization grade corresponding to DCI of expecting as initial polymerization grade; by determined blind Detecting direction, the DCI of i expectation to be detected ", blind check unit 1102 in above-mentioned all embodiment also for: travel through not detected polymerization grade and detect, until detect successfully, or all not detected polymerization grades are traveled through.
In other embodiments of the invention, the allocative decision in above-mentioned all embodiment can be used for indicating base station that the E-PDCCH with same polymeric grade is placed on to same search volume; First E-PDCCH in above-mentioned search volume is as main E-PDCCH, have the E-PDCCH of same polymeric grade as auxiliary E-PDCCH, main E-PDCCH is at least for carrying the auxiliary E-PDCCH number of polymerization grade, DCI message format and search volume of auxiliary E-PDCCH; Auxiliary E-PDCCH is used for carrying DCI.
According to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carry out the aspect of blind Detecting, above-mentioned blind check unit 1102 can be used for:
By polymerization grade order from high to low or order from low to high, detect the main E-PDCCH in described search volume;
If detect successfully, use the auxiliary E-PDCCH number in polymerization grade, DCI message format and search volume that extract, the upper auxiliary E-PDCCH carrying of main E-PDCCH, detect the DCI of the upper carrying of auxiliary E-PDCCH.
Particular content refers to aforementioned record herein, and therefore not to repeat here.
The software module that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to carry out, or the combination of the two is implemented.Software module can be placed in the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a Physical Downlink Control Channel E-PDCCH blind checking method for enhancing, is characterized in that, comprising:
User equipment (UE) carries out preliminary treatment to the data of transmitting on the running time-frequency resource for transmitting E-PDCCH, uses the length gauge of data after pretreatment to calculate the sum of control channel unit eCCE number consecutively; Described preliminary treatment at least comprises that channel equalization, demodulation disturb;
UE, according to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting.
2. the method for claim 1, is characterized in that,
Described allocative decision is used to indicate base station determines the mapping direction of eCCE according to the odd even of user radio network temporary mark RNTI; Described mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction;
Described UE, according to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting and comprises:
Described UE, according to the odd even of self RNTI, determines blind Detecting direction; Described blind Detecting direction is eCCE numbering ascending order direction or eCCE numbering descending direction; Described blind Detecting direction is consistent with the mapping direction of base station maps eCCE;
Described UE carries out blind Detecting by determined blind Detecting direction to the Downlink Control Information DCI expecting.
3. method as claimed in claim 2, is characterized in that, the described Downlink Control Information DCI to expectation carries out blind Detecting and comprises:
To the DCI of first expectation, described UE carries out total blindness's detection by determined blind Detecting direction and polymerization grade order from high to low;
When i-1 the DCI expecting is while detecting successfully, adopts polymerization grade that the DCI of i-1 expectation the is corresponding initial polymerization grade of DCI blind Detecting as i expectation, by determined blind Detecting direction, the DCI of i expectation is detected;
I is greater than 1 integer.
4. method as claimed in claim 3, it is characterized in that, polymerization grade corresponding to DCI that i-1 of described employing expected, as i the initial polymerization grade of DCI blind Detecting of expecting, detects and comprises the DCI of i expectation by determined blind Detecting direction:
Carry out after blind Detecting failure in the polymerization grade with initial, be better than corresponding channel quality while detecting i-1 the DCI expecting if detect i channel quality corresponding to DCI of expecting, reduce polymerization grade and detect; Otherwise, improve polymerization grade and detect.
5. the method for claim 1, is characterized in that,
Described allocative decision is used to indicate base station the E-PDCCH with same polymeric grade is placed in same search volume; First E-PDCCH in described search volume is as main E-PDCCH, the described E-PDCCH with same polymeric grade is as auxiliary E-PDCCH, and described main E-PDCCH is at least for carrying the auxiliary E-PDCCH number of polymerization grade, DCI message format and described search volume of auxiliary E-PDCCH; Described auxiliary E-PDCCH is for bearing downlink control information DCI;
Described UE, according to the E-PDCCH time-frequency resource allocating scheme of carrying in E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting and comprises:
Described UE, by polymerization grade order from high to low or order from low to high, detects the main E-PDCCH in described search volume;
If detect successfully, use the auxiliary E-PDCCH number in polymerization grade, DCI message format and described search volume that extract, the upper auxiliary E-PDCCH carrying of main E-PDCCH, detect the DCI of the upper carrying of auxiliary E-PDCCH.
6. a method for mapping resource, is characterized in that, comprising:
Physical Downlink Control Channel E-PDCCH time-frequency resource allocating scheme is determined in base station;
ECCE mapping is carried out according to determined E-PDCCH time-frequency resource allocating scheme in base station;
Base station is carried described E-PDCCH time-frequency resource allocating scheme by E-PDCCH configuration information unit and is handed down to user equipment (UE).
7. method as claimed in claim 6, is characterized in that,
Described E-PDCCH time-frequency resource allocating scheme is used to indicate the mapping direction of determining eCCE according to the odd even of user radio network temporary mark RNTI; Described mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction;
Described according to determined E-PDCCH time-frequency resource allocating scheme, carry out eCCE mapping and comprise:
Determine the mapping direction of the control channel unit eCCE strengthening according to the odd even of user radio network temporary mark RNTI; Described mapping direction is eCCE numbering ascending order direction or eCCE numbering descending direction;
According to definite mapping direction, carry out eCCE mapping.
8. method as claimed in claim 6, is characterized in that,
Described E-PDCCH time-frequency resource allocating scheme is used to indicate base station the E-PDCCH with same polymeric grade is placed in same search volume; First E-PDCCH in described search volume is as main E-PDCCH, the described E-PDCCH with same polymeric grade is as auxiliary E-PDCCH, and described main E-PDCCH is at least for carrying the auxiliary E-PDCCH number of polymerization grade, DCI message format and described search volume of auxiliary E-PDCCH; Described auxiliary E-PDCCH is for bearing downlink control information DCI;
Described according to determined E-PDCCH time-frequency resource allocating scheme, carry out eCCE mapping and comprise:
Base station is placed on the E-PDCCH with same polymeric grade in same search volume as auxiliary E-PDCCH;
An E-PDCCH is added as main E-PDCCH in base station in described search volume; Auxiliary E-PDCCH number in polymerization grade, DCI message format and the described search volume of the auxiliary E-PDCCH of the upper carrying of described main E-PDCCH; Described auxiliary E-PDCCH is for bearing downlink control information DCI;
Each E-PDCCH in described search volume is carried on eCCE.
9. a Physical Downlink Control Channel E-PDCCH blind Detecting device for enhancing, is characterized in that, comprising:
Pretreatment unit, carries out preliminary treatment to the data of transmitting on the running time-frequency resource for transmitting E-PDCCH, uses the length gauge of data after pretreatment to calculate the sum of control channel unit eCCE number consecutively; Described preliminary treatment at least comprises that channel equalization, demodulation disturb;
Blind check unit, for the E-PDCCH time-frequency resource allocating scheme of carrying according to E-PDCCH configuration information that receive, that base station issues unit, carries out blind Detecting.
10. a resource mapping apparatus, is characterized in that, comprising:
Allocative decision determining unit, for determining Physical Downlink Control Channel E-PDCCH time-frequency resource allocating scheme, and is handed down to user equipment (UE) by E-PDCCH configuration information unit;
Map unit, for according to determined E-PDCCH time-frequency resource allocating scheme, carries out eCCE mapping.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734809A (en) * | 2015-03-09 | 2015-06-24 | 电子科技大学 | Resource mapping method and blind detection method based on same |
| WO2016197472A1 (en) * | 2015-06-08 | 2016-12-15 | 深圳市中兴微电子技术有限公司 | Method and device for processing enhanced physical downlink control channel, and storage medium |
| CN107645356A (en) * | 2016-07-20 | 2018-01-30 | 普天信息技术有限公司 | PDCCH control channel unit polymerization grade determines method and apparatus |
| CN107734666A (en) * | 2016-08-11 | 2018-02-23 | 中国移动通信有限公司研究院 | Control channel transmission indicating means, detection method, base station and user equipment |
| CN109286968A (en) * | 2017-07-20 | 2019-01-29 | 维沃移动通信有限公司 | A kind of blind Detecting parameter acquiring method, relevant device and system |
| CN109392151A (en) * | 2017-08-11 | 2019-02-26 | 维沃移动通信有限公司 | A kind of method, apparatus and system of determining PDCCH search space |
| CN109474384A (en) * | 2017-09-08 | 2019-03-15 | 华为技术有限公司 | Communication means, terminal device and the network equipment |
| JP2019534630A (en) * | 2016-09-30 | 2019-11-28 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Control channel transmission method, network device, and terminal device |
| CN110545583A (en) * | 2018-05-29 | 2019-12-06 | 展讯通信（上海）有限公司 | DCI detection frequency indication and receiving method, base station, terminal and readable medium |
| CN113055142A (en) * | 2019-12-26 | 2021-06-29 | 广州慧睿思通科技股份有限公司 | PDCCH blind detection method, device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186251A (en) * | 2011-04-29 | 2011-09-14 | 中兴通讯股份有限公司 | Method and system for transmitting downlink control information |
| CN103327614A (en) * | 2012-03-19 | 2013-09-25 | 上海贝尔股份有限公司 | Method for establishing implicit association between expanded PUCCH resources used for ACK/NACK and eCCEs used in ePDCCHs |
| CN103391563A (en) * | 2012-05-11 | 2013-11-13 | 中兴通讯股份有限公司 | Downlink control information transmission method and detection method, base station and user equipment |
| US20140092830A1 (en) * | 2012-09-28 | 2014-04-03 | Xiaogang Chen | Blind decoding for an enhanced physical downlink control channel (epdcch) |
-
2014
- 2014-09-30 CN CN201410522776.XA patent/CN104219036B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186251A (en) * | 2011-04-29 | 2011-09-14 | 中兴通讯股份有限公司 | Method and system for transmitting downlink control information |
| CN103327614A (en) * | 2012-03-19 | 2013-09-25 | 上海贝尔股份有限公司 | Method for establishing implicit association between expanded PUCCH resources used for ACK/NACK and eCCEs used in ePDCCHs |
| CN103391563A (en) * | 2012-05-11 | 2013-11-13 | 中兴通讯股份有限公司 | Downlink control information transmission method and detection method, base station and user equipment |
| US20140092830A1 (en) * | 2012-09-28 | 2014-04-03 | Xiaogang Chen | Blind decoding for an enhanced physical downlink control channel (epdcch) |
Non-Patent Citations (1)
| Title |
|---|
| 李冬玲: "LTE系统用户接收端DCI盲检测设计", 《万方数据知识服务平台》 * |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734809A (en) * | 2015-03-09 | 2015-06-24 | 电子科技大学 | Resource mapping method and blind detection method based on same |
| WO2016197472A1 (en) * | 2015-06-08 | 2016-12-15 | 深圳市中兴微电子技术有限公司 | Method and device for processing enhanced physical downlink control channel, and storage medium |
| CN106301728A (en) * | 2015-06-08 | 2017-01-04 | 深圳市中兴微电子技术有限公司 | A kind of enhancement mode Physical Downlink Control Channel processing method and processing device |
| CN106301728B (en) * | 2015-06-08 | 2019-08-06 | 深圳市中兴微电子技术有限公司 | A kind of enhanced Physical Downlink Control Channel processing method and processing device |
| CN107645356A (en) * | 2016-07-20 | 2018-01-30 | 普天信息技术有限公司 | PDCCH control channel unit polymerization grade determines method and apparatus |
| CN107734666A (en) * | 2016-08-11 | 2018-02-23 | 中国移动通信有限公司研究院 | Control channel transmission indicating means, detection method, base station and user equipment |
| CN107734666B (en) * | 2016-08-11 | 2021-07-06 | 中国移动通信有限公司研究院 | Control channel transmission indication method, detection method, base station and user equipment |
| JP2019534630A (en) * | 2016-09-30 | 2019-11-28 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Control channel transmission method, network device, and terminal device |
| US10680867B2 (en) | 2016-09-30 | 2020-06-09 | Huawei Technologies Co., Ltd. | Control channel transmission method, network device, and terminal device |
| CN109286968A (en) * | 2017-07-20 | 2019-01-29 | 维沃移动通信有限公司 | A kind of blind Detecting parameter acquiring method, relevant device and system |
| CN109286968B (en) * | 2017-07-20 | 2020-07-28 | 维沃移动通信有限公司 | Blind detection parameter acquisition method, related equipment and system |
| US11418283B2 (en) | 2017-07-20 | 2022-08-16 | Vivo Mobile Communication Co., Ltd. | Blind detection parameter acquisition method, relevant device and system |
| CN109392151A (en) * | 2017-08-11 | 2019-02-26 | 维沃移动通信有限公司 | A kind of method, apparatus and system of determining PDCCH search space |
| CN109392151B (en) * | 2017-08-11 | 2023-04-18 | 维沃移动通信有限公司 | Method, device and system for determining PDCCH search space |
| CN109474384A (en) * | 2017-09-08 | 2019-03-15 | 华为技术有限公司 | Communication means, terminal device and the network equipment |
| CN109474384B (en) * | 2017-09-08 | 2021-02-12 | 华为技术有限公司 | Communication method, terminal equipment and network equipment |
| US11483094B2 (en) | 2017-09-08 | 2022-10-25 | Huawei Technologies Co., Ltd. | Method for blind detection, and communication apparatus |
| US11728926B2 (en) | 2017-09-08 | 2023-08-15 | Huawei Technologies Co., Ltd. | Communication method for performing blind detections |
| CN110545583A (en) * | 2018-05-29 | 2019-12-06 | 展讯通信（上海）有限公司 | DCI detection frequency indication and receiving method, base station, terminal and readable medium |
| CN110545583B (en) * | 2018-05-29 | 2022-01-25 | 展讯通信（上海）有限公司 | DCI detection frequency indication and receiving method, base station, terminal and readable medium |
| CN113055142A (en) * | 2019-12-26 | 2021-06-29 | 广州慧睿思通科技股份有限公司 | PDCCH blind detection method, device and storage medium |
| CN113055142B (en) * | 2019-12-26 | 2022-08-09 | 广州慧睿思通科技股份有限公司 | PDCCH blind detection method, device and storage medium |
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