CN104219036B - EPDCCH blind checking methods, method for mapping resource and device - Google Patents
EPDCCH blind checking methods, method for mapping resource and device Download PDFInfo
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Abstract
The embodiment of the invention discloses EPDCCH blind checking methods, method for mapping resource and device.The blind detection method includes：UE is pre-processed to the data transmitted on the running time-frequency resource for transmitting E PDCCH, and control channel unit eCCE sum, and number consecutively are calculated using the length gauge of data after pretreatment；E PDCCH time-frequency resource allocating schemes in the E PDCCH configuration information units that UE is issued according to receive, base station, carry out blind Detecting.It can be seen that in the present embodiment, base station has formulated E PDCCH time-frequency resource allocatings schemes and notified UE, UE carries out blind Detecting according to the instruction of the allocative decision received.Compared with existing way is without instruction, the hit rate of UE blind Detectings can be improved, reduces the amount of calculation of blind Detecting.
Description
Technical field
The present invention relates to communication technical field, and in particular to EPDCCH blind checking methods, 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, enhancing
Physical Downlink Control Channel) on.E-PDCCH can then carry logically continuous L eCCE (Enhanced-Control
Channel Element, the control channel unit of enhancing) on.L is polymerization grade.L values can be 32,16,8,4,2,1.
Lte-a system is that each user (UE) defines in subframe one group of limited running time-frequency resource position to carry DCI.Due to
The interaction of uplink downlink needs to dispatch multiple UE simultaneously, and therefore, lte-a system must be supported to send multiple tune in a subframe
Spend message (namely DCI).
In existing lte-a system, base station is the polymerization grade corresponding to the DCI for not notifying UE to issue, and base station is also obstructed
Know particular locations of the carrying DCI eCCE in above-mentioned one group limited running time-frequency resource position.Therefore, UE needs to pass through blind Detecting
To attempt to solve DCI information.The amount of calculation of blind Detecting how is reduced, turns into current research hot topic.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide EPDCCH blind checking methods, method for mapping resource and dress
Put, to reduce the amount of calculation of blind Detecting.
To achieve the above object, the embodiment of the present invention provides following technical scheme：
A kind of first aspect according to embodiments of the present invention, there is provided the Physical Downlink Control Channel E-PDCCH blind checks of enhancing
Survey method, including：
User equipment (UE) pre-processes to the data transmitted on the running time-frequency resource for transmitting E-PDCCH, uses
The length gauge of data after pretreatment calculates control channel unit eCCE sum, and number consecutively；The pretreatment is at least
Descramble including channel equalization, demodulation；
The E-PDCCH running time-frequency resources point carried in the E-PDCCH configuration information units that UE issues according to receive, base station
With scheme, blind Detecting is carried out.
With reference in a first aspect, in the first possible implementation, the allocative decision be used to indicating base station according to
Family Radio Network Temporary Identifier RNTI odd even determines eCCE mapping direction；The mapping direction is eCCE numbering ascending orders direction
Or eCCE numbering descendings direction；
The E-PDCCH time-frequencies money carried in the E-PDCCH configuration information units that the UE issues according to receive, base station
Source allocative decision, carrying out blind Detecting includes：
The UE determines blind Detecting direction according to itself RNTI odd even；The blind Detecting direction is eCCE numbering ascending orders
Direction or eCCE numbering descendings direction；The blind Detecting direction is consistent with base station maps eCCE mapping direction；
The UE presses identified blind Detecting direction and carries out blind Detecting to desired Downlink Control Information DCI.
The first possible implementation with reference to first aspect, in second of possible implementation, described pair of expectation
Downlink Control Information DCI carry out blind Detecting include：DCI desired to first, by identified blind Detecting direction and gather
Close the order of grade from high to low and carry out total blindness's detection；When the i-th -1 desired DCI is detected successfully, using the i-th -1 expectation
DCI corresponding to polymerization grade the polymerization grade of starting is surveyed as i-th of desired DCI blind detection, by identified blind Detecting side
Detected to i-th of desired DCI；I is the integer more than 1.
With reference to second of possible implementation of first aspect, in the third possible implementation, described pair of expectation
Downlink Control Information DCI carry out blind Detecting also include：It is desired to i-th when the i-th -1 desired DCI detections failure
DCI, total blindness's detection is carried out by the order of identified blind Detecting direction and polymerization grade from high to low.
With reference to second of first aspect or the third possible implementation, in the 4th kind of possible implementation, institute
The polymerization grade for surveying starting as i-th of desired DCI blind detection using polymerization grade corresponding to the i-th -1 desired DCI is stated, is pressed
Identified blind Detecting direction DCI desired to i-th, which carries out detection, to be included：Blind check dendrometry is being carried out with the polymerization grade of starting
After losing, if channel quality corresponding to i-th of desired DCI of detection is better than channel corresponding during the i-th -1 desired DCI of detection
Quality, reduce polymerization grade and detected；Otherwise, polymerization grade is improved to be detected.
It is described to use in the 5th kind of possible implementation with reference to the 4th kind of possible implementation of first aspect
Polymerization grade surveys the polymerization grade of starting as i-th of desired DCI blind detection corresponding to i-1 desired DCI, by identified
Blind Detecting direction DCI desired to i-th, which is detected, also to be included：After reducing or improving polymerization grade and carry out detection failure,
Detected polymerization grade is not detected traversal, until detecting successfully, or has traveled through all not detected polymerization grades.
With reference in a first aspect, in the 6th kind of possible implementation, the allocative decision is used to indicate that base station will have
The E-PDCCH of same polymeric grade is placed in same search space；First E-PDCCH in the search space is as main E-
PDCCH, the E-PDCCH with same polymeric grade are at least auxiliary for carrying as auxiliary E-PDCCH, the main E-PDCCH
Auxiliary E-PDCCH numbers in E-PDCCH polymerization grade, DCI message formats and the search space；The auxiliary E-PDCCH is used
In bearing downlink control information DCI；
The E-PDCCH time-frequencies money carried in the E-PDCCH configuration information units that the UE issues according to receive, base station
Source allocative decision, carrying out blind Detecting includes：
The UE presses the order of polymerization grade from high to low or order from low to high, detects the master in the search space
E-PDCCH；
If detecting successfully, extract the auxiliary E-PDCCH of main E-PDCCH carrying polymerization grade, DCI message formats and described search
Auxiliary E-PDCCH numbers in rope space, use the polymerization grade, DCI message formats and the search space of the auxiliary E-PDCCH
In auxiliary E-PDCCH numbers detect the DCI carried on auxiliary E-PDCCH.
Second aspect according to embodiments of the present invention, there is provided a kind of method for mapping resource, including：
Base station determines Physical Downlink Control Channel E-PDCCH time-frequency resource allocating schemes；
Base station E-PDCCH time-frequency resource allocatings scheme determined by carries out eCCE mappings；
Base station carries the E-PDCCH time-frequency resource allocatings scheme by E-PDCCH configuration informations unit and is handed down to user
Equipment UE.
With reference to second aspect, in the first possible implementation, the E-PDCCH time-frequency resource allocatings scheme is used for
Instruction determines eCCE mapping direction according to user radio Network Temporary Identifier RNTI odd even；Compiled for eCCE in the mapping direction
Number ascending order direction or eCCE numbering descendings direction；
E-PDCCH time-frequency resource allocatings scheme determined by the basis, carrying out eCCE mappings includes：
The control channel unit eCCE of enhancing mapping side is determined according to user radio Network Temporary Identifier RNTI odd even
To；The mapping direction is eCCE numbering ascending order directions or eCCE numbering descendings direction；
According to the mapping direction of determination, eCCE mappings are carried out.
The first possible implementation with reference to second aspect, in second of possible implementation, it is described according to
Family Radio Network Temporary Identifier RNTI odd even determines that the control channel unit eCCE of enhancing mapping direction includes：By user's root
It is grouped according to RNTI odd even, obtains the first packet and second packet；To the user in the described first packet, it is determined that mapping side
To for eCCE numbering ascending orders direction；To the user in the second packet, it is determined that mapping direction is eCCE numbering descendings direction；Institute
The mapping direction according to determination is stated, carrying out eCCE mappings includes：To the user in the described first packet, number and rise by the eCCE
Sequence order carries out eCCE mappings；To the user in the second packet, eCCE mappings are carried out by the eCCE numberings descending order.
With reference to second aspect in the first possible second of possible implementation of implementation or second aspect,
In three kinds of possible implementations, the RNTI of user is odd number in described first group, and the RNTI of user is equal in described second group
For even number, or, the RNTI of user is even number in described first group, and the RNTI of user is odd number in described second group.
With reference to second aspect, in the 4th kind of possible implementation, the E-PDCCH time-frequency resource allocatings scheme is used for
E-PDCCH with same polymeric grade is placed in same search space by instruction base station；First in the search space
E-PDCCH is as main E-PDCCH, and the E-PDCCH with same polymeric grade is as auxiliary E-PDCCH, the main E-PDCCH
At least it is used to carry the auxiliary E-PDCCH numbers in auxiliary E-PDCCH polymerization grade, DCI message formats and the search space；Institute
State auxiliary E-PDCCH and be used for bearing downlink control information DCI；
E-PDCCH time-frequency resource allocatings scheme determined by the basis, carrying out eCCE mappings includes：
Base station is placed on the E-PDCCH with same polymeric grade as auxiliary E-PDCCH in same search space；
An E-PDCCH is added in the search space as main E-PDCCH in base station；Carried on the main E-PDCCH
Auxiliary E-PDCCH numbers in auxiliary E-PDCCH polymerization grade, DCI message formats and the search space；The auxiliary E-PDCCH
For bearing downlink control information DCI；
Each E-PDCCH in the search space is carried on eCCE.
A kind of third aspect according to embodiments of the present invention, there is provided the Physical Downlink Control Channel E-PDCCH blind checks of enhancing
Device is surveyed, including：
Pretreatment unit, the data transmitted on the running time-frequency resource for transmitting E-PDCCH are pre-processed, used
The length gauge of data after pretreatment calculates control channel unit eCCE sum, and number consecutively；The pretreatment is at least
Descramble including channel equalization, demodulation；
Blind check unit, for according to the E- carried in the E-PDCCH configuration information units receiving, base station issues
PDCCH time-frequency resource allocating schemes, carry out blind Detecting.
Fourth aspect according to embodiments of the present invention, there is provided a kind of resource mapping apparatus, including：
Allocative decision determining unit, for determining Physical Downlink Control Channel E-PDCCH time-frequency resource allocating schemes, and lead to
Cross E-PDCCH configuration information units and be handed down to user equipment (UE)；
Map unit, for the E-PDCCH time-frequency resource allocating schemes determined by, carry out eCCE mappings.
It can be seen that in the present embodiment, base station has formulated E-PDCCH time-frequency resource allocatings scheme and notified UE, UE is according to connecing
The instruction of the allocative decision received carries out blind Detecting.Compared with existing way is without instruction, the hit rate of UE blind Detectings can be improved,
Reduce the amount of calculation of blind Detecting.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 a are method for mapping resource flow chart provided in an embodiment of the present invention；
Fig. 1 b are E-PDCCH blind checking methods flow chart provided in an embodiment of the present invention；
Fig. 1 c are another flow chart of E-PDCCH blind checking methods provided in an embodiment of the present invention；
Fig. 2 is the another flow chart of E-PDCCH blind checking methods provided in an embodiment of the present invention；
Fig. 3 is that eCCE provided in an embodiment of the present invention maps schematic diagram；
Fig. 4 is E-PDCCH blind checking methods flow chart provided in an embodiment of the present invention；
Fig. 5 is blind Detecting schematic diagram provided in an embodiment of the present invention；
Fig. 6 is the another flow chart of E-PDCCH blind checking methods provided in an embodiment of the present invention；
Fig. 7 is that total blindness provided in an embodiment of the present invention examines flow chart；
Fig. 8 maps schematic diagram for major-minor E-PDCCH provided in an embodiment of the present invention；
Fig. 9 is the another flow chart of E-PDCCH blind checking methods provided in an embodiment of the present invention；
Figure 10 is resource mapping apparatus exemplary plot provided in an embodiment of the present invention；
Figure 11 is E-PDCCH blind Detectings device exemplary plot provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Only it is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The embodiment of the present invention is improved eCCE resource mapping method in base station side first, thinks follow-up UE blind checks
Amount of calculation is reduced during survey premise is provided.
Fig. 1 a are referred to, method for mapping resource provided in an embodiment of the present invention comprises at least following steps：
S101 ', base station determine E-PDCCH time-frequency resource allocating schemes, and pass through E-PDCCH configuration information units
(EPDCCH-Config information element) is handed down to user equipment (UE)；
More specifically, primary EPDCCH (main E-PDCCH) field carrying of E-PDCCH configuration information units can be used
E-PDCCH time-frequency resource allocating schemes.
S102 ', base station the E-PDCCH time-frequency resource allocatings scheme determined by, carry out eCCE mappings.
Accordingly, the E-PDCCH blind checking methods performed by a certain UE sides may include following steps (referring to Fig. 1 b)：
S101：UE pre-processes to the data transmitted on the running time-frequency resource for transmitting E-PDCCH, using through pre-
The length gauge of data after processing calculates control channel unit eCCE sum, and number consecutively；
Above-mentioned pretreatment comprises at least channel equalization, demodulation descrambles.
S102：The E-PDCCH time-frequencies carried in the E-PDCCH configuration information units that UE issues according to receive, base station
Resource Allocation Formula, carry out blind Detecting.
In the present embodiment, base station has formulated E-PDCCH time-frequency resource allocatings scheme and has notified UE, and UE is according to receiving
The instruction of allocative decision carries out blind Detecting.Compared with existing way is without instruction, the hit rate of UE blind Detectings can be improved, is reduced blind
The amount of calculation of detection.
Base station can formulate a variety of allocative decisions, and eCCE mappings and blind Detecting under two kinds of allocative decisions is explained below.
Allocative decision one：
Allocative decision one may indicate that the mapping side that eCCE is determined according to the odd even of user radio Network Temporary Identifier (RNTI)
To；ECCE mapping direction is eCCE numbering ascending order directions or eCCE numbering descendings direction.
Accordingly, Fig. 1 c are referred to, above-mentioned steps S102 ' may particularly include following steps：
S1’：ECCE mapping direction is determined according to the odd even of user radio Network Temporary Identifier (RNTI).
S2’：According to identified mapping direction, eCCE mappings are carried out.
In other embodiments of the present invention, Fig. 2 is referred to, above-mentioned steps S1 ' can further comprise：
S11’：User is grouped according to RNTI odd even, obtains the first packet and second packet.
The RNTI of user can be odd number in first group, and the RNTI of user is even number in second group.Or on the contrary, first
The RNTI of user is even number in group, and the RNTI of user is odd number in above-mentioned second group.
For example it is assumed that one shares 10 users, its RNTI value is respectively 1-10, then is 1,3,5,7,9 by RNTI values
User be divided into one group, by RNTI values be 2,4,6,8,10 user be divided into one group.
S12’：To the user in the first packet, it is determined that mapping direction is eCCE numbering ascending orders direction, in second packet
User, it is determined that mapping direction is eCCE numbering descendings direction.
Accordingly, step S2 ' can further comprise：
S21’：To the user in the above-mentioned first packet, eCCE mappings are carried out by above-mentioned eCCE numberings ascending order order；
S22’：To the user in above-mentioned second packet, eCCE mappings are carried out by above-mentioned eCCE numberings descending order.
For example, refer to Fig. 3, it is assumed that eCCE numberings are #0~#N-1.User RNTI values in first packet are 1,3,
5.This group of user is then directed to, it maps direction for the ascending order since #0；And the user RNTI values in second packet are 2,4,
This group of user is then directed to, it maps direction for the descending since #N-1.
ECCE is mapped according to user RNTI odd even in base station, and after issuing DCI message, performed by a certain UE sides
E-PDCCH blind checking methods may include following steps (referring to Fig. 4)：
S1, the data transmitted on the running time-frequency resource for transmitting E-PDCCH are pre-processed, use is preprocessed
The length gauge of data afterwards calculate eCCE sum (concrete mode be divided by each eCCE in RE number), and number consecutively.
Above-mentioned pretreatment comprises at least channel equalization, demodulation descrambles.
It should be noted that base station, which can be multiple UE, distributes same PRB pair.It can be transmitted on a PRB pair corresponding more
Individual UE DCI, in addition, on a PRB pair for distributing to UE, base station can also issue multiple DCI for the UE.Therefore, UE is simultaneously
Do not know in the data transmitted on the PRB pair for distributing to oneself, which partial data is destined to the DCI information of oneself.
So, UE needs to make unified processing to the data transmitted on oneself PRB pair.Step S1 can use existing way to realize,
This is not repeated.
DCI E-PDCCH is carried, can be sent in one or more eCCE continuous in logic.Therefore, need exist for pair
ECCE is numbered, in order to follow-up blind check.
It should be noted that distributing the UE of same PRB pair, its obtained eCCE sum, the eCCE numberings of progress are phases
With.
It is assumed that the eCCE sums calculated are 20, then data after pretreatment are divided into 20 segments and compiled successively
Number, a corresponding eCCE per a bit of data.
S2, the odd even according to RNTI, determine blind Detecting direction.
Blind Detecting direction concretely eCCE numberings ascending order direction or eCCE numbering descendings direction.
Each user can determine the resource blind Detecting direction of oneself according to oneself unique RNTI, be according to eCCE ascending orders also
It is that descending does blind check.
UE blind Detecting direction maps what eCCE mapping direction was consistent with base station for it.From the foregoing it will be appreciated that base station
It is that eCCE resource impacts are carried out according to the RNTI of user odd even.
Still continue to use precedent, it is assumed that base station side for the user that RNTI is odd number, for eCCE number and rise by the mapping direction used
Sequence direction, to the user that RNTI is even number, eCCE numbering descendings direction is in the mapping direction used.
Then in this step, if certain UE RNTI values are odd number, then its blind Detecting direction is eCCE numbering ascending orders direction,
Such as UE RNTI values are even number, then its blind Detecting direction is eCCE numbering descendings direction.
S3, by identified blind Detecting direction to desired DCI carry out blind Detecting.
It should be noted that although UE does not know the DCI format that base station is sent, oneself expected DCI is known.Therefore,
Blind Detecting can be carried out to desired DCI by identified blind Detecting direction.It is to expectation all in a subframe in blind check
DCI carries out blind Detecting.
It should be noted that step S1 corresponds to abovementioned steps S101, step S2 and S3 are abovementioned steps S102 refinements.
It can be seen that in the present embodiment, UE according to the RNTI of itself odd even, can by eCCE numberings ascending order or descending direction,
Blind Detecting is carried out to desired DCI.And early stage in base station side, eCCE mappings have been carried out according to UE odd even, then UE sides institute
Ascending order perform, consistent with base station side mapping direction or descending blind check, can improve the hit rate of UE blind Detectings, reduce blind Detecting
Amount of calculation.
For example, Fig. 3 is still referred to, base station side is that user 4 is assigned with eCCE#N-2 and eCCE# by eCCE descending orders
N-3 carries DCI.
For user 4, Fig. 5 is referred to, it is assumed that its eCCE calculated sum is 10, and numbering is respectively #0~#
9, wherein, the #N-1 in #9 corresponding diagrams 3, the #N-2 in #8 corresponding diagrams 3, the #N-3 in #7 corresponding diagrams 3.As user 4 presses existing skill
The mode of art, then the blind Detecting since the eCCE#0 sides in Fig. 5, it be able to can so be caused meaningless by eCCE numberings ascending order order
Detection.And in embodiments of the present invention, the RNTI of user 4 is even number, by eCCE numbering descending orders, namely from Fig. 5's
ECCE#9 sides start to carry out blind Detecting to the left, so soon can be with because the eCCE#8 in Fig. 5 and eCCE#7 carries its DCI
Blind check success, so as to reduce the amount of calculation of blind Detecting.
Below, it will be described in detail and how blind Detecting carried out to desired DCI.
In other embodiments of the present invention, Fig. 6 is referred to, the step S3 in above-mentioned all embodiments can further comprise：
S31, DCI desired to first, by the order of identified blind Detecting direction and polymerization grade from high to low
Carry out total blindness's detection.
Preceding to have addressed, polymerization grade L values can be 32,16,8,4,2,1 etc..DCI desired to first, is by polymerization
The order of grade from high to low, namely total blindness's detection is carried out by 32 to 1 order.
More specifically, for each polymerization grade, UE can determine UE dedicated search space and correspondingly according to the polymerization grade
E-PDCCH candidate channel numbers.The starting point (starting eCCE) in UE dedicated search space then determines (how to determine by hash function
Starting point is prior art, and therefore not to repeat here).
Afterwards, the symbol that L eCCE of the UE extractions since RE where starting eCCE backward is carried, carries out subsequent bits
Level detection process (including solution rate-matched, Viterbi decoding and 16 CRC checks).
By taking L=8 as an example, it is assumed that the sum for the eCCE that user 4 calculates is 20, and numbering is respectively #0~#19.For L=
8, it is determined that the starting point in UE dedicated search space be #15, then determine corresponding one by eCCE numbering descending orders, every 8 eCCE
E-PDCCH candidate channels, namely：#15~#8, #7~#0 one E-PDCCH candidate channel of each correspondence, altogether 2 E-PDCCH wait
Select channel.This 2 E-PDCCH candidate channels form the UE dedicated search space for L=8.
Again by taking L=4 as an example, it is assumed that the sum for the eCCE that user 4 calculates is 20, and numbering is respectively #0~#19.For L
=4, it is determined that the starting point in UE dedicated search space be #17, then determine corresponding one by eCCE numbering descending orders, every 4 eCCE
Individual E-PDCCH candidate channels, namely：One E-PDCCH candidates letter of each correspondence of #17~#14, #13~#10, #9~#6, #5~#2
Road, totally 4 E-PDCCH candidate channels.This 4 E-PDCCH candidate channels form the UE dedicated search space for L=4.
For other polymerization grades, and in this way, therefore not to repeat here.
With L increase, except a few cases, candidate channel number reduces.So first in the blind Detecting subframe
During DCI message, carried out according to the order of polymerization grade from high to low.Once correct DCI is retrieved from some polymerization grade
Information, then the eCCE for carrying the data segment will not be used for retrieving lower polymerization grade.
More specifically, can be special to UE it is determined that after UE dedicated search space and corresponding E-PDCCH candidate channels number
E-PDCCH candidate channels in search space are decoded (solution rate-matched, Viterbi decoding), and by CRC check whether
For correct DCI.
During CRC check, UE can enter RNTI Information hidings according to DCI expected from oneself in CRC check sequence
Row verification.As CRC check is correct, then successfully decoded.Failure is such as verified, next E-PDCCH in UE dedicated search space is waited
Select channel to be decoded, and carry out CRC check, by that analogy, until verify successfully, or all E-PDCCH candidate channels school
Test failure.
Precedent is continued to use, in blind Detecting L=8, #15~#8 can be decoded first by user 4 and CRC check, if verification
Success, DCI information corresponding to reading, retain this polymerization grade (L=8) searched for.Now, without again to eCCE in #15~#
Data on 8 carry out relatively low polymerization grade L=4, L=2, L=1 detection.
If #15~#8 verification failures, continue to decode the data on #7~#0 and CRC check.Success is such as verified, is read
DCI information corresponding to going out, retain the polymerization grade (L=8) of this search；If #7~#0 verification failures.Due to now all E-
PDCCH candidate channels verify failure, then reduce polymerization grade, and L is taken as into 4, determine UE dedicated search space corresponding to L=4
With corresponding E-PDCCH candidate channels number, similar search is carried out again afterwards.
So repeat, until solving correct DCI information, or traveled through all polymerization grades.
Step S31 can be represented with the circulation process shown in Fig. 7.
S32, when the i-th -1 desired DCI is detected successfully, made using polymerization grade corresponding to the i-th -1 desired DCI
The polymerization grade of starting is surveyed for i-th of desired DCI blind detection, is carried out by identified blind Detecting direction DCI desired to i-th
Detection.I is the integer more than 1.
So that the 1st it is expected DCI and the 2nd expectation DCI as an example.It is assumed that the 1st desired DCI is detected successfully, corresponding to it
Polymerization grade is L=8, then the 2nd desired DCI will be started with L=8, carries out blind Detecting.
More specifically, it is assumed that the sum for the eCCE that user 4 calculates is 20, and numbering is respectively #0~#19.For the 2nd
Desired DCI, in L=8, it is determined that the starting point in UE dedicated search space be #10, then by eCCE numbering descending orders, every 8
ECCE determines a corresponding E-PDCCH candidate channel, namely：#10~#3 corresponds to an E-PDCCH candidate channel, totally 1 E-
PDCCH candidate channels.Subsequent bits level detection process is carried out to the E-PDCCH candidate channels.
It can be seen that in the present embodiment, i-th of desired DCI is to detect successful the i-th -1 desired DCI polymerization
Grade is with reference to progress blind Detecting.Because in the case where the variations dispatched twice are little, base station side pair
The DCI of the i-th -1 and i-th desired is likely to distribute same polymerization grade, using the i-th -1 DCI polymerization grade to originate
Polymerization grade, the hit rate of blind Detecting can be improved to a certain extent, reduce the amount of calculation of blind Detecting.
In other embodiments of the present invention, the step S3 in above-mentioned all embodiments may also include the steps of：
When the i-th -1 desired DCI detection failure, to i-th of desired DCI, by identified blind Detecting direction with
And the order of polymerization grade from high to low carries out total blindness's detection.
So that the 1st it is expected DCI and the 2nd expectation DCI as an example (user 4), it is assumed that, the 1st desired DCI detections failure,
Then be similar to the 1st desired DCI, the 2nd desired DCI will since L=32, by polymerization grade from high to low, eCCE compiles
Number descending carries out blind Detecting.Corresponding description refers to introduction described previously herein, and therefore not to repeat here.
Certainly, blind Detecting is carried out as reference using the polymerization grade for detecting successful the i-th -1 desired DCI, may be successful,
It may also fail.
Success is such as detected, then reads corresponding DCI information.
And such as detect failure, in order to further improve blind Detecting hit rate, reduce the amount of calculation of blind Detecting, the present invention its
In his embodiment, it can also proceed as follows：
After blind Detecting failure is carried out with the polymerization grade of starting, if channel quality corresponding to i-th of desired DCI of detection
It is better than channel quality corresponding during the i-th -1 desired DCI of detection, reduces polymerization grade and detected；Otherwise, polymerization is improved
Grade is detected.
That is, if channel quality improves, polymerization grade is reduced, otherwise improves polymerization grade.
More specifically, can according to CQI (instruction of channel quality indicator channel qualities) feedacks come
Determine that the change of channel quality is taken advantage of a favourable situation.
Still continue to use precedent, it is assumed that, the 1st desired DCI is detected successfully, and its corresponding polymerization grade is L=8.Then the 2nd
Desired DCI will be started with L=8, carry out blind Detecting.
As L=8 detect fail, determine that channel quality improves according to CQI, then with L=4 carry out blind Detecting (it needs to be determined that
The starting point in UE dedicated search space, corresponding E-PDCCH candidate channels number, traversal E-PDCCH candidate channels decoded,
CRC schools are examined, until verify successfully, or all E-PDCCH candidate channels verify failure).
If conversely, channel quality be deteriorated, with L=16 carry out blind Detecting (it needs to be determined that the starting point in UE dedicated search space,
Corresponding E-PDCCH candidate channels number, traversal E-PDCCH candidate channels are decoded, the inspection of CRC schools, until verify successfully, or
All E-PDCCH candidate channels verify failure).
Because base station can consider the changes such as variations DCI twice polymerization grade.If channel quality becomes
Difference, base station may improve polymerization grade, if conversely, channel quality improves, base station may reduce polymerization grade.It is of the invention real
Adjustment characteristic of the example according to base station is applied, polymerization grade is adjusted, to further improve blind Detecting hit rate, reduces blind check
The amount of calculation of survey.
Certainly, after improving or reducing polymerization grade, blind Detecting may succeed, it is also possible to failure.
If detecting successfully, corresponding DCI information is read.
And such as detect failure, then it is above-mentioned " using polymerization of the polymerization grade as starting corresponding to the i-th -1 desired DCI
Grade, detected by identified blind Detecting direction DCI desired to i-th " it may also include：
After reducing or improving polymerization grade and carry out detection failure, detected polymerization grade is not detected traversal, directly
To detecting successfully, or all not detected polymerization grades are traveled through.
Precedent is still continued to use, the 2nd desired DCI carries out blind Detecting using L=8 as starting polymerization grade.After detection failure,
According to the information of CQI feedback, judge that channel quality improves, then blind Detecting is carried out with L=4, blind Detecting failure is being carried out with L=4
Afterwards, the polymerization grade not being detected to other (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.
Record described previously herein is referred to for the specific detection mode of each polymerization grade, therefore not to repeat here.
Allocative decision two：
E-PDCCH time-frequency resource allocatings scheme two be used for indicate base station using the E-PDCCH with same polymeric grade as
Auxiliary E-PDCCH is placed on same search space.Such benefit is that have identical start bit under the same search space in UE sides
Put, and at least auxiliary E-PDCCH has identical polymerization grade, can more efficiently detect data.
And in existing way, the E-PDCCH of different polymerization grades is scattered to be dispersed with.
First E-PDCCH in above-mentioned search space as main E-PDCCH, and it is foregoing refer to there is same polymeric etc.
E-PDCCH is as auxiliary E-PDCCH for level.
Main E-PDCCH and auxiliary E-PDCCH polymerization grade can be the same, can also be different.
Wherein, main E-PDCCH at least can be used for the polymerization grade, DCI message formats, search space for carrying auxiliary E-PDCCH
In the content such as auxiliary E-PDCCH numbers, and auxiliary E-PDCCH is then used to carry DCI.
Refer to Fig. 8, it is assumed that eCCE numberings are #0~#N-1, and base station is auxiliary by L=2 main E-PDCCH and L=4's
E-PDCCH is combined into a search space, and the starting point of the search space is #0, and in the search space, main E-PDCCH is carried on
In logic on continuous 2 eCCE, auxiliary E-PDCCH carryings are logically on continuous 4 eCCE.Between main and auxiliary E-PDCCH
It there may be fragment.
In other embodiments of the present invention, main E-PDCCH can also carry conventional DCI.
In addition, main E-PDCCH can also carry each auxiliary E-PDCCH original position (or auxiliary E-PDCCH original position
Can be calculated by polymerization grade) and other information.
Based on above-mentioned E-PDCCH time-frequency resource allocatings scheme, abovementioned steps S102 ' may particularly include：
Base station is placed on the E-PDCCH with same polymeric grade as auxiliary E-PDCCH in same search space；
An E-PDCCH is added in the search space as main E-PDCCH in base station；
Wherein, the auxiliary E- in auxiliary E-PDCCH polymerization grade, DCI message formats, search space is carried on main E-PDCCH
The contents such as PDCCH numbers；Auxiliary E-PDCCH is used to carry DCI；
Each E-PDCCH in search space is carried on eCCE.
Each E-PDCCH in search space is carried on eCCE in base station, and after issuing DCI message, by a certain UE sides
The E-PDCCH blind checking methods of execution may include following steps (referring to Fig. 9)：
S1, the data transmitted on the running time-frequency resource for transmitting E-PDCCH are pre-processed, use is preprocessed
The length gauge of data afterwards calculate eCCE sum (concrete mode be divided by each eCCE in RE number), and number consecutively.
Detail refers to record described previously herein, and therefore not to repeat here.
S4, UE press the order of polymerization grade from high to low or order from low to high, detect the main E- in search space
PDCCH。
Preceding to have addressed, polymerization grade L values can be 32,16,8,4,2,1 etc., and therefore, UE is by the order by 32 to 1 or 1
To 32 order, the main E-PDCCH in search space is detected.
More specifically, for each polymerization grade, UE can determine the starting point of search space using hash function, that is, searching
Main E-PDCCH starting eCCE in rope space.
Afterwards, the L eCCE that UE extractions are moved backward since RE where starting eCCE, is carried out at subsequent bits level detection
Reason (including solution rate-matched, Viterbi decoding and 16 CRC checks).As CRC check is correct, then successfully decoded.UE can be read
Auxiliary E-PDCCH numbers in the auxiliary E-PDCCH of main E-PDCCH carrying polymerization grade, DCI message formats and search space.
In the case where main E-PDCCH also carries conventional DCI, after successfully decoded, UE can also read main E-PDCCH carryings
DCI。
Certainly, for a certain polymerization grade, if the main E-PDCCH in detection search space is unsuccessful, other can be selected
The polymerization grade not detected, detect the main E-PDCCH in search space.By that analogy, until detecting successfully, or all polymerizations etc.
Level has detected.
If S5, detecting successfully, polymerization grade, DCI using the auxiliary E-PDCCH carried on E-PDCCH extract, main disappear
The auxiliary E-PDCCH numbers in form and search space are ceased, detect the DCI carried on auxiliary E-PDCCH.
It is assumed that in step s 4, during L=2, the main E-PDCCH successes in search space are detected.The auxiliary E-PDCCH extracted
Polymerization grade be L=4, the auxiliary E-PDCCH numbers in search space be 2, then auxiliary E-PDCCH start bit is calculated according to L=4
Put, extract 4 eCCE backward from auxiliary E-PDCCH original position, carry out subsequent bits level detection process (including solution speed
Match somebody with somebody, Viterbi decoding and 16 CRC checks), until finding expected DCI, or all auxiliary E-PDCCH detect failure.
It should be noted that step S1 corresponds to abovementioned steps S101, step S4 and S5 are abovementioned steps S102 refinements.
In the present embodiment, only polymerization grade is traveled through when detecting main E-PDCCH to be detected, after main E-PDCCH successes,
The auxiliary E-PDCCH of content detection in main E-PDCCH is extracted again.Polymerization due to carrying auxiliary E-PDCCH in main E-PDCCH etc.
Level, therefore go to detect without traversal polymerization grade, so as to reduce the amount of calculation of blind Detecting.
Corresponding with above-mentioned method for mapping resource, resource mapping apparatus is also claimed in the embodiment of the present invention, and the device can
As base station side, or it is built in base station.
Figure 10 shows a kind of example arrangement of above-mentioned resource mapping apparatus, and it may include：
Allocative decision determining unit 101, for determining E-PDCCH time-frequency resource allocating schemes, and configured by E-PDCCH
Information unit is handed down to UE；
Map unit 102, for the E-PDCCH time-frequency resource allocating schemes determined by, carry out eCCE mappings.
Particular content refers to record described previously herein, and therefore not to repeat here.
In other embodiments of the present invention, above-mentioned E-PDCCH time-frequency resource allocatings scheme is used to indicate according to the strange of RNTI
The even mapping direction for determining eCCE；Above-mentioned mapping direction is eCCE numbering ascending order directions or eCCE numbering descendings direction.
Accordingly, it is above-mentioned to reflect in terms of carrying out eCCE mappings in the E-PDCCH time-frequency resource allocating schemes determined by
Unit 102 is penetrated to be used for：
The control channel unit eCCE of enhancing mapping direction is determined according to RNTI odd even；Above-mentioned mapping direction is eCCE
Numbering ascending order direction or eCCE numbering descendings direction.
According to the mapping direction of determination, eCCE mappings are carried out.
Particular content refers to record described previously herein, and therefore not to repeat here.
In other embodiments of the present invention, in the mapping for the control channel unit eCCE that enhancing is determined according to RNTI odd even
The aspect in direction, above-mentioned map unit 102 can be used for：
User is grouped according to RNTI odd even, obtains the first packet and second packet；
To the user in the above-mentioned first packet, it is determined that mapping direction is eCCE numbering ascending orders direction；
To the user in above-mentioned second packet, it is determined that mapping direction is eCCE numbering descendings direction.
Accordingly, can be used in the mapping direction according to determination, the aspect of progress eCCE mappings, above-mentioned map unit 102：
To the user in the above-mentioned first packet, eCCE mappings are carried out by above-mentioned eCCE numberings ascending order order；
To the user in above-mentioned second packet, eCCE mappings are carried out by above-mentioned eCCE numberings descending order.
The RNTI of user can be odd number in first group, and the RNTI of user is even number in second group.Or on the contrary, first
The RNTI of user is even number in group, and the RNTI of user is odd number in above-mentioned second group.
Particular content refers to record described previously herein, and therefore not to repeat here.
In other embodiments of the present invention, above-mentioned E-PDCCH time-frequency resource allocatings scheme, which is used for instruction, will have identical gather
The E-PDCCH for closing grade is placed in same search space；First E-PDCCH in search space has as main E-PDCCH
The E-PDCCH of same polymeric grade is as auxiliary E-PDCCH；Main E-PDCCH at least be used for carry auxiliary E-PDCCH polymerization grade,
Auxiliary E-PDCCH numbers in DCI message formats and search space；Auxiliary E-PDCCH is used for bearing downlink control information DCI.
Accordingly, it is above-mentioned to reflect in terms of carrying out eCCE mappings in the E-PDCCH time-frequency resource allocating schemes determined by
Unit 102 is penetrated to be used for：
It is placed on the E-PDCCH with same polymeric grade as auxiliary E-PDCCH in same search space；
An E-PDCCH is added in search space as main E-PDCCH；The poly- of auxiliary E-PDCCH is carried on main E-PDCCH
Close the auxiliary E-PDCCH numbers in grade, DCI message formats and search space；Auxiliary E-PDCCH is used for bearing downlink control information
DCI；
Each E-PDCCH in search space is carried on eCCE.
Particular content refers to record described previously herein, and therefore not to repeat here.
Corresponding with above-mentioned E-PDCCH blind checking methods, E-PDCCH blind Detectings dress is also claimed in the embodiment of the present invention
Put.The device can be used as user equipment (UE), or UE built-in module.
Figure 11 shows a kind of example arrangement of above-mentioned E-PDCCH blind Detectings device, and it may include：
Pretreatment unit 1101, the data transmitted on the running time-frequency resource for transmitting E-PDCCH are pre-processed,
Control channel unit eCCE sum, and number consecutively are calculated using the length gauge of data after pretreatment.
Above-mentioned pretreatment comprises at least channel equalization, demodulation descrambles.
Blind check unit 1102, for according to the E- carried in the E-PDCCH configuration information units receiving, base station issues
PDCCH time-frequency resource allocating schemes, carry out blind Detecting.
In other embodiments of the present invention, the allocative decision in above-mentioned all embodiments may be used to indicate base station according to RNTI
Odd even determine eCCE mapping direction；Above-mentioned mapping direction is eCCE numbering ascending order directions or eCCE numbering descendings direction.
Accordingly, when according to the E-PDCCH carried in the E-PDCCH configuration information units receiving, base station issues
Frequency Resource Allocation Formula, in terms of carrying out blind Detecting, above-mentioned blind check unit 1102 is used for：
According to RNTI odd even, blind Detecting direction is determined；Above-mentioned blind Detecting direction be eCCE numbering ascending order directions or
ECCE numbering descendings direction；Certain UE blind Detecting direction maps what eCCE mapping direction was consistent with base station for it.By preceding
State and understand, base station is to carry out eCCE resource impacts according to the RNTI of user odd even.
Blind Detecting is carried out to desired Downlink Control Information DCI by identified blind Detecting direction.
Particular content refers to record described previously herein, and therefore not to repeat here.
It is above-mentioned all in terms of blind Detecting is carried out to desired Downlink Control Information DCI in other embodiments of the invention
Blind check unit 1102 in embodiment can be used for：
DCI desired to first, carried out by the order of identified blind Detecting direction and polymerization grade from high to low
Total blindness detects；
When the i-th -1 desired DCI is detected successfully, using polymerization grade corresponding to the i-th -1 desired DCI as
I desired DCI blind detections survey the polymerization grade of starting, are examined by identified blind Detecting direction DCI desired to i-th
Survey；
I is the integer more than 1.
Particular content refers to record described previously herein, and therefore not to repeat here.
In other embodiments of the present invention, in terms of the above-mentioned progress blind Detecting to desired Downlink Control Information DCI, on
The blind check unit 1102 stated in all embodiments can be additionally used in：
When the i-th -1 desired DCI detection failure, to i-th of desired DCI, by identified blind Detecting direction with
And the order of polymerization grade from high to low carries out total blindness's detection.
Particular content refers to record described previously herein, and therefore not to repeat here.
Certainly, blind Detecting is carried out as reference using the polymerization grade for detecting successful the i-th -1 desired DCI, may be successful,
It may also fail.
Success is such as detected, then blind check unit 1102 reads corresponding DCI information.
And failure is such as detected, in other embodiments of the present invention, gather above-mentioned using corresponding to the i-th -1 desired DCI
The polymerization grade that grade surveys starting as i-th of desired DCI blind detection is closed, i-th it is expected by identified blind Detecting direction
DCI carry out context of detection, the blind check unit 1102 in above-mentioned all embodiments is used for：
If channel quality corresponding to i-th of desired DCI of detection is better than corresponding during the i-th -1 desired DCI of detection
Channel quality, reduce polymerization grade and detected；Otherwise, polymerization grade is improved to be detected.
Particular content refers to record described previously herein, and therefore not to repeat here.
Certainly, after improving or reducing polymerization grade, blind Detecting may succeed, it is also possible to failure.
Success is such as detected, then blind check unit 1102 reads corresponding DCI information.
And failure is such as detected, in other embodiments of the present invention, " using polymerization etc. corresponding to the i-th -1 desired DCI
Level as originate polymerization grade, detected by identified blind Detecting direction DCI desired to i-th " aspect, it is above-mentioned
Blind check unit 1102 in all embodiments is additionally operable to：Detected polymerization grade is not detected traversal, until detect successfully,
Or all not detected polymerization grades are traveled through.
In other embodiments of the present invention, the allocative decision in above-mentioned all embodiments, which may be used to indicate base station, will have phase
E-PDCCH with polymerization grade is placed on same search space；First E-PDCCH in above-mentioned search space is as main E-
PDCCH, there is the E-PDCCH of same polymeric grade as auxiliary E-PDCCH, main E-PDCCH is at least used to carry auxiliary E-PDCCH's
Auxiliary E-PDCCH numbers in polymerization grade, DCI message formats and search space；Auxiliary E-PDCCH is used to carry DCI.
According to the E-PDCCH running time-frequency resources point carried in the E-PDCCH configuration information units receiving, base station issues
With scheme, the aspect of blind Detecting is carried out, above-mentioned blind check unit 1102 can be used for：
By the order of polymerization grade from high to low or order from low to high, the main E- in the search space is detected
PDCCH；
If detecting successfully, the auxiliary E-PDCCH carried on E-PDCCH extract, main polymerization grade, DCI message are used
Auxiliary E-PDCCH numbers in form and search space, detect the DCI carried on auxiliary E-PDCCH.
Particular content refers to record described previously herein, and therefore not to repeat here.
Directly it can be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (6)
- A kind of 1. Physical Downlink Control Channel E-PDCCH blind checking methods of enhancing, it is characterised in that including：User equipment (UE) pre-processes to the data transmitted on the running time-frequency resource for transmitting E-PDCCH, using through pre- The length gauge of data after processing calculates control channel unit eCCE sum, and number consecutively；The pretreatment comprises at least Channel equalization, demodulation descrambling；The E-PDCCH time-frequency resource allocating sides carried in the E-PDCCH configuration information units that UE issues according to receive, base station Case, carry out blind Detecting；Wherein, the allocative decision is used to indicate that base station determines eCCE's according to user radio Network Temporary Identifier RNTI odd even Map direction；The mapping direction is eCCE numbering ascending order directions or eCCE numbering descendings direction；The E-PDCCH running time-frequency resources point carried in the E-PDCCH configuration information units that the UE issues according to receive, base station With scheme, carrying out blind Detecting includes：The UE determines blind Detecting direction according to itself RNTI odd even；The blind Detecting direction is eCCE numbering ascending orders direction Or eCCE numbering descendings direction；The blind Detecting direction is consistent with base station maps eCCE mapping direction；The UE presses identified blind Detecting direction and carries out blind Detecting to desired Downlink Control Information DCI.
- 2. the method as described in claim 1, it is characterised in that described that blind Detecting is carried out to desired Downlink Control Information DCI Including：DCI desired to first, the UE are entered by the order of identified blind Detecting direction and polymerization grade from high to low Row total blindness detects；When the i-th -1 desired DCI is detected successfully, using polymerization grade corresponding to the i-th -1 desired DCI as i-th Desired DCI blind detection surveys the polymerization grade of starting, is detected by identified blind Detecting direction DCI desired to i-th；I is the integer more than 1.
- 3. method as claimed in claim 2, it is characterised in that described using polymerization grade corresponding to the i-th -1 desired DCI The polymerization grade of starting is surveyed as i-th of desired DCI blind detection, is entered by identified blind Detecting direction DCI desired to i-th Row detection includes：After blind Detecting failure is carried out with the polymerization grade of starting, if channel quality corresponding to i-th of desired DCI of detection is better than Channel quality corresponding during the i-th -1 desired DCI is detected, polymerization grade is reduced and is detected；Otherwise, polymerization grade is improved Detected.
- A kind of 4. method for mapping resource, it is characterised in that including：Base station determines enhanced Physical Downlink Control Channel E-PDCCH time-frequency resource allocating schemes；Base station E-PDCCH time-frequency resource allocatings scheme determined by carries out eCCE mappings；Base station carries the E-PDCCH time-frequency resource allocatings scheme by E-PDCCH configuration informations unit and is handed down to user equipment UE；Wherein, the E-PDCCH time-frequency resource allocatings scheme is used to indicate according to the strange of user radio Network Temporary Identifier RNTI The even mapping direction for determining eCCE；The mapping direction is eCCE numbering ascending order directions or eCCE numbering descendings direction；E-PDCCH time-frequency resource allocatings scheme determined by the basis, carrying out eCCE mappings includes：The control channel unit eCCE of enhancing mapping direction is determined according to user radio Network Temporary Identifier RNTI odd even；Institute It is eCCE numbering ascending order directions or eCCE numbering descendings direction to state mapping direction；According to the mapping direction of determination, eCCE mappings are carried out.
- A kind of 5. Physical Downlink Control Channel E-PDCCH blind Detecting devices of enhancing, it is characterised in that including：Pretreatment unit, the data transmitted on the running time-frequency resource for transmitting E-PDCCH are pre-processed, using through pre- The length gauge of data after processing calculates control channel unit eCCE sum, and number consecutively；The pretreatment comprises at least Channel equalization, demodulation descrambling；Blind check unit, the E-PDCCH carried in the E-PDCCH configuration information units issued for received according to UE, base station Time-frequency resource allocating scheme, carry out blind Detecting；Wherein, the allocative decision is used to indicate that base station determines eCCE's according to user radio Network Temporary Identifier RNTI odd even Map direction；The mapping direction is eCCE numbering ascending order directions or eCCE numbering descendings direction；The E-PDCCH running time-frequency resources point carried in the E-PDCCH configuration information units that the UE issues according to receive, base station With scheme, carrying out blind Detecting includes：The UE determines blind Detecting direction according to itself RNTI odd even；The blind Detecting direction is eCCE numbering ascending orders direction Or eCCE numbering descendings direction；The blind Detecting direction is consistent with base station maps eCCE mapping direction；The UE presses identified blind Detecting direction and carries out blind Detecting to desired Downlink Control Information DCI.
- A kind of 6. resource mapping apparatus, it is characterised in that including：Allocative decision determining unit, for determining enhanced Physical Downlink Control Channel E-PDCCH time-frequency resource allocating schemes, and User equipment (UE) is handed down to by E-PDCCH configuration information units；Map unit, for the E-PDCCH time-frequency resource allocating schemes determined by, carry out eCCE mappings；Pass through E-PDCCH Configuration information unit carries the E-PDCCH time-frequency resource allocatings scheme and is handed down to user equipment (UE)；Wherein, the E-PDCCH time-frequency resource allocatings scheme is used to indicate according to the strange of user radio Network Temporary Identifier RNTI The even mapping direction for determining eCCE；The mapping direction is eCCE numbering ascending order directions or eCCE numbering descendings direction；E-PDCCH time-frequency resource allocatings scheme determined by the basis, carrying out eCCE mappings includes：The control channel unit eCCE of enhancing mapping direction is determined according to user radio Network Temporary Identifier RNTI odd even；Institute It is eCCE numbering ascending order directions or eCCE numbering descendings direction to state mapping direction；According to the mapping direction of determination, eCCE mappings are carried out.
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| CN104734809B (en) * | 2015-03-09 | 2019-05-03 | 电子科技大学 | A kind of method for mapping resource and the blind detection method based on the method for mapping resource |
| 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 |
| CN107645356B (en) * | 2016-07-20 | 2020-12-25 | 普天信息技术有限公司 | Method and device for determining control channel unit aggregation level of PDCCH |
| 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 |
| BR112019006412A2 (en) * | 2016-09-30 | 2019-09-10 | Huawei Tech Co Ltd | Transmission method of control channel, network device and terminal device |
| 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 |
| 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 |
| CN113037432A (en) | 2017-09-08 | 2021-06-25 | 华为技术有限公司 | Communication method, terminal equipment and network equipment |
| 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 |
| 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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