CN109818712A - A kind of NPDCCH blind detection method and device based on narrowband Internet of Things - Google Patents
A kind of NPDCCH blind detection method and device based on narrowband Internet of Things Download PDFInfo
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Abstract
The embodiment of the invention provides a kind of NPDCCH blind detection method and device based on narrowband Internet of Things, the narrowband Internet of Things includes user equipment (UE) and base station, which comprises the UE receives the MSG4 message of the base station；Wherein, the MSG4 message includes NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；The UE determines the NPDCCH sending cycle of the base station according to the NPDCCH maximum number of repetitions parameter and the initial position parameter；The UE determines the starting subframe according to the NPDCCH sending cycle and the offset value parameter；The UE determines candidate blind examination parameter sets according to the NPDCCH maximum number of repetitions parameter；Subframe of the UE according to the candidate blind examination parameter sets using the starting subframe as starting point for the carrying NPDCCH carries out blind examination, obtains Downlink Control Information；The UE carries out data interaction using the Downlink Control Information and the base station, reduces the conflict of the search space NPDCCH between UE, is conducive to improve the ratio that NPDCCH occupies subframe.
Description
Technical field
The present invention relates to the technical fields of communication, more particularly to a kind of NPDCCH blind detection method based on narrowband Internet of Things
With a kind of NPDCCH blind examination device based on narrowband Internet of Things.
Background technique
Narrowband Internet of Things (Narrow Band Internet of Things, NB-IoT) is one kind based on cellular network
Low-power consumption wan communication technology, NPDCCH (Narrowband Physical Downlink Control Channel, narrowband
Physical Downlink Control Channel) be mainly used for carry narrowband Internet of Things in DCI (Downlink Control Information,
Downlink Control Information), including the scheduling information transmitted for downlink and uplink data and other control information etc..Narrowband Internet of Things
Scheduling flow are as follows: eNB (evolved Node B, evolution base station) generate DCI, indicate a UE (User Equipment, use
Family equipment) scheduling running time-frequency resource, DCI is sent to UE by NPDCCH, can in NPDSCH after UE receives NPDCCH
(Narrowband Physical Downlink Shared Channel, narrowband Physical Downlink Shared Channel) receives lower line number
According to, or pass through NPUSCH (Narrowband Physical Uplink Shared Channel, the shared letter of narrowband physical uplink
Road) send upstream data.As it can be seen that the NPDCCH scheduling mechanism of flexibility and reliability, can be such that running time-frequency resource is rationally utilized, realize
The high efficiency of transmission of data.
In narrowband Internet of Things, 1 or 2 CCE (Control Channel Element, control channel unit) are held
Carry a DCI.1 CCE accounts for a subframe in the time domain, and 6 subcarriers are accounted on frequency domain.UE needs to search in control area
The initial position CCE and CCE polymerization grade where DCI, this process are known as NPDCCH blind examination；The configuration of existing blind examination parameter
Scheme does not distinguish different application scenarios, and the blind examination parameter of configuration may can not meet the demand of UE economize on electricity or handling capacity.Though
The allocation plan of right blind examination parameter can make the scheduling delay of UE minimum, and handling capacity is maximum, but is detrimental to UE power saving, and do not have
There is the collision probability of the search space NPDCCH between may making UE with reference to information such as covering grade and business models higher.
Summary of the invention
The embodiment of the present invention provides a kind of NPDCCH blind detection method based on narrowband Internet of Things and corresponding one kind based on narrow
NPDCCH blind examination device with Internet of Things can make the search space NPDCCH between UE to solve the allocation plan of existing blind examination parameter
The higher above problem of collision probability.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of blind examination sides NPDCCH based on narrowband Internet of Things
Method, the narrowband Internet of Things include user equipment (UE) and base station, and the UE is connect with the base station, which comprises
The UE receives the MSG4 message of the base station；Wherein, the MSG4 message includes protenchyma reason downlink control letter
Road NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；
The UE determines the base station according to the NPDCCH maximum number of repetitions parameter and the initial position parameter
NPDCCH sending cycle；
The UE determines the starting subframe according to the NPDCCH sending cycle and the offset value parameter；
The UE determines candidate blind examination parameter sets according to the NPDCCH maximum number of repetitions parameter；
The UE is directed to the carrying NPDCCH by starting point of the starting subframe according to the candidate blind examination parameter sets
Subframe carry out blind examination, obtain Downlink Control Information；
The UE carries out data interaction using the Downlink Control Information and the base station.
Preferably, the UE is according to described in the NPDCCH maximum number of repetitions parameter and initial position parameter determination
The step of NPDCCH sending cycle of base station includes:
The NPDCCH maximum number of repetitions parameter and the initial position parameter are made product calculation by the UE, obtain institute
State NPDCCH sending cycle.
Preferably, the candidate blind examination parameter sets respectively include number of repetition and polymerization grade；The polymerization grade packet
Include the first polymerization grade and the second polymerization grade；The UE is with the starting subframe according to the candidate blind examination parameter sets
Point for it is described carrying NPDCCH subframe carry out blind examination, obtain Downlink Control Information the step of include:
When the number of repetition is 1, respectively according to first polymerization grade and second polymerization grade with described
Originating subframe is subframe progress blind examination of the starting point for the carrying NPDCCH, obtains Downlink Control Information；
When the number of repetition is greater than 1, institute is directed to by starting point of the starting subframe according to second polymerization grade
The subframe for stating carrying NPDCCH carries out blind examination, obtains Downlink Control Information.
The embodiment of the invention also discloses a kind of NPDCCH blind detection method based on narrowband Internet of Things, the narrowband Internet of Things
Including base station and UE, the base station is connect with the UE, which comprises
The base station sends the subframe of carrying NPDCCH according to NPDCCH sending cycle；
When the UE blind examination obtains Downlink Control Information and the UE response downlink control letter in the subframe
After breath receives downlink data or sends upstream data to the base station, the base station according to the uplink and downlink data and the UE into
Row data interaction.
Preferably, it is also wrapped before the step of base station sends the subframe of carrying NPDCCH according to NPDCCH sending cycle
It includes:
The base station sends MSG4 message to the UE；Wherein, the MSG4 message includes NPDCCH maximum number of repetitions
Parameter, initial position parameter and offset value parameter.
Preferably, the offset value parameter includes the first offset value parameter and the second offset value parameter, the deviant ginseng
Number obtains in the following manner:
The base station obtains minimum number of repetition parameter；
The base station determines deviant threshold using the NPDCCH maximum number of repetitions parameter and the initial position parameter
Value；
The base station judges whether the minimum number of repetition parameter is less than or equal to the deviant threshold value；
When the minimum number of repetition parameter is less than or equal to the deviant threshold value, the base station then determines described inclined
Moving value parameter is the first offset value parameter；
When the minimum number of repetition parameter is greater than the deviant threshold value, the base station then determines the deviant ginseng
Number is the second offset value parameter.
Preferably, it is described first offset value parameter include the first sub- deviant, the second sub- deviant, the sub- deviant of third and
4th sub- deviant, the method also includes:
The base station carries out default operation according to the described first sub- deviant, obtains the second sub- deviant；
The base station carries out default operation according to the described second sub- deviant, obtains the sub- deviant of third；
The base station carries out default operation according to the sub- deviant of the third, obtains the 4th sub- deviant.
The embodiment of the invention also discloses a kind of NPDCCH blind examination device based on narrowband Internet of Things, the narrowband Internet of Things
Including UE and base station, the UE is connect with the base station, and described device includes:
Receiving module receives the MSG4 message of the base station for the UE；Wherein, the MSG4 message includes NPDCCH
Maximum number of repetitions parameter, initial position parameter and offset value parameter；
NPDCCH sending cycle determining module, for the UE according to the NPDCCH maximum number of repetitions parameter and described
Initial position parameter determines the NPDCCH sending cycle of the base station；Wherein,
Subframe determining module is originated, is determined for the UE according to the NPDCCH sending cycle and the offset value parameter
The starting subframe；
Candidate blind examination parameter sets determining module is determined for the UE according to the NPDCCH maximum number of repetitions parameter
Candidate blind examination parameter sets；
Downlink Control Information obtains module, for the UE according to the candidate blind examination parameter sets with the starting subframe
Subframe for starting point for the carrying NPDCCH carries out blind examination, obtains Downlink Control Information；
First data interaction module carries out data friendship using the Downlink Control Information and the base station for the UE
Mutually.
Preferably, the NPDCCH sending cycle determining module includes:
NPDCCH sending cycle determines submodule, for the UE by the NPDCCH maximum number of repetitions parameter and described
Initial position parameter makees product calculation, obtains the NPDCCH sending cycle.
Preferably, the candidate blind examination parameter sets respectively include number of repetition and polymerization grade；The polymerization grade packet
Include the first polymerization grade and the second polymerization grade；The Downlink Control Information obtains module
First Downlink Control Information obtains submodule, for gathering according to described first respectively when the number of repetition is 1
It closes the subframe of grade and second polymerization grade using the starting subframe as starting point for the carrying NPDCCH and carries out blind examination,
Obtain Downlink Control Information；
First Downlink Control Information obtains submodule, for polymerizeing according to described second when the number of repetition is greater than 1
Subframe of the grade using the starting subframe as starting point for the carrying NPDCCH carries out blind examination, obtains Downlink Control Information.
The embodiment of the invention also discloses a kind of NPDCCH blind examination device based on narrowband Internet of Things, the narrowband Internet of Things
Including base station and UE, the base station is connect with the UE, and described device includes:
NPDCCH sending module sends the subframe of carrying NPDCCH for the base station according to NPDCCH sending cycle；
Second data interaction module, for obtaining the Downlink Control Information in the subframe, Yi Jisuo when the UE blind examination
After stating the UE response Downlink Control Information reception downlink data or sending upstream data to the base station, the base station is according to institute
It states uplink and downlink data and the UE carries out data interaction.
Preferably, the module being connected with the NPDCCH sending module further include:
Sending module sends MSG4 message to the UE for the base station；Wherein, the MSG4 message includes NPDCCH
Maximum number of repetitions parameter, initial position parameter and offset value parameter.
Preferably, described device further include:
Minimum number of repetition parameter acquisition module obtains minimum number of repetition parameter for the base station；
Deviant threshold determination module uses the NPDCCH maximum number of repetitions parameter and described for the base station
Beginning location parameter determines deviant threshold value；
Judgment module judges whether the minimum number of repetition parameter is less than or equal to the deviant for the base station
Threshold value；
First determining module is used for when the minimum number of repetition parameter is less than or equal to the deviant threshold value, institute
It states base station and then determines that the offset value parameter is the first offset value parameter；
Second determining module is used for when the minimum number of repetition parameter is greater than the deviant threshold value, the base station
Then determine that the offset value parameter is the second offset value parameter.
Preferably, it is described first offset value parameter include the first sub- deviant, the second sub- deviant, the sub- deviant of third and
4th sub- deviant, described device further include:
Second sub- deviant obtains module, carries out default operation according to the described first sub- deviant for the base station, obtains
Obtain the second sub- deviant；
The sub- deviant of third obtains module, carries out default operation according to the described second sub- deviant for the base station, obtains
Obtain the sub- deviant of third；
4th sub- deviant obtains module, carries out default operation according to the sub- deviant of the third for the base station, obtains
Obtain the 4th sub- deviant.
The embodiment of the present invention includes following advantages:
In the embodiment of the present invention, the UE receives the MSG4 message of the base station；Wherein, the MSG4 message includes
NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；The UE is repeated according to the NPDCCH maximum
Count parameter and the initial position parameter determine the NPDCCH sending cycle of the base station；The UE is sent out according to the NPDCCH
Period and the offset value parameter is sent to determine the starting subframe；The UE is true according to the NPDCCH maximum number of repetitions parameter
Fixed candidate's blind examination parameter sets；The UE is directed to according to according to the candidate blind examination parameter sets using the starting subframe as starting point
The subframe of the carrying NPDCCH carries out blind examination, obtains Downlink Control Information；The UE uses the Downlink Control Information and institute
It states base station and carries out data interaction；In the embodiment of the present invention, user nonoverlapping for NPDCCH follows according to different numbers of repetition
Ring configures the offset value parameter of dedicated search space starting subframe, reduces the conflict of the search space NPDCCH between UE, is conducive to
Improve the ratio that NPDCCH occupies subframe.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing；
The step of Fig. 1 is a kind of NPDCCH blind detection method embodiment one based on narrowband Internet of Things of embodiment of the present invention stream
Cheng Tu；
The step of Fig. 2 is a kind of NPDCCH blind detection method embodiment two based on narrowband Internet of Things of embodiment of the present invention stream
Cheng Tu；
Fig. 3 is a kind of deviation post figure of starting subframe of the embodiment of the present invention；
Fig. 4 is a kind of schematic diagram in dedicated search space of the embodiment of the present invention；
Fig. 5 is a kind of structural frames of NPDCCH blind examination Installation practice three based on narrowband Internet of Things of the embodiment of the present invention
Figure；
Fig. 6 is the structure of another NPDCCH blind examination Installation practice four based on narrowband Internet of Things of the embodiment of the present invention
Block diagram.
Specific embodiment
The technical issues of in order to keep the embodiment of the present invention solved, technical solution and beneficial effect are more clearly understood, with
The embodiment of the present invention is further described in lower combination accompanying drawings and embodiments.It should be appreciated that specific implementation described herein
Example is only used to explain the present invention, is not intended to limit the present invention.
Referring to Fig.1, a kind of NPDCCH blind detection method embodiment based on narrowband Internet of Things of the embodiment of the present invention is shown
One step flow chart, the narrowband Internet of Things include user equipment (UE) and base station, and the UE connect with the base station, specifically may be used
To include the following steps:
Step 101, the UE receives MSG (message, information) 4 message of the base station；Wherein, the MSG4 message
Including NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；
In the embodiment of the present invention, the type of the base station may include macro base station, micro-base station, femto base station, distributed base station
Deng the embodiment of the present invention does not limit this specifically, and base station mainly may include baseband processing unit (Building Base
Band Unite), Remote Radio Unit (Radio Remote Unit) and antenna-feeder system；
Baseband processing unit mainly completes the functions such as channel coding/decoding, the modulation /demodulation of baseband signal, protocol processes, simultaneously
It needs to provide the interface function with upper layer network element；
Remote Radio Unit mainly be exactly by received from/send toward baseband processing unit digital/analog signal carry out D/A
(Digital to Analog, digital signal turn analog signal), A/D (Analog to Digital, analog signal revolution word letter
Number), numerically/down coversion, rf-signal modulation demodulation, the radio frequency analog signal that then these will be sent/be received carries out
Power amplification/low noise amplification is finally sent to antenna-feeder system via filter element and is emitted.Remote Radio Unit needs
Interface with baseband processing unit and antenna-feeder system is provided；
Antenna-feeder system is mainly exactly feeder line and antenna, and the purpose of antenna-feeder system is exactly that will receive to the nothing of Remote Radio Unit
Line signal is put together, and is then radiate, and the signal that can also send over user equipment, which is put together, sends radio frequency drawing to
Remote cell processing, the embodiment of the present invention do not limit the composition of base station specifically.
It is specifically applied in the embodiment of the present invention, the UE connecting with the base station receives the MSG4 message from base station, wherein
The MSG4 message includes NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；The MSG4 message is base
The RRC (Radio Resource Control, wireless heterogeneous networks) that UE is issued at station is established or is rebuild order, and UE can reply one
A MSG5 message replys base station RRC and establishes or rebuild completion to base station.
Step 102, the UE determines institute according to the NPDCCH maximum number of repetitions parameter and the initial position parameter
State the NPDCCH sending cycle of base station；
It applies in the embodiment of the present invention, which can be according to NPDCCH maximum number of repetitions parameter and initial position
Parameter determines that the base station sends the sending cycle of NPDCCH.
In a kind of preferred embodiment of the embodiment of the present invention, the UE according to the NPDCCH maximum number of repetitions parameter and
The initial position parameter determines that the step of NPDCCH sending cycle of the base station includes following sub-step:
Sub-step S1021, the UE multiply the NPDCCH maximum number of repetitions parameter and initial position parameter work
Product operation, obtains the NPDCCH sending cycle.
It applies in the embodiment of the present invention, UE can join the NPDCCH maximum number of repetitions parameter and initial position
Number makees product calculation, obtains the NPDCCH sending cycle.
Step 103, the UE determines the starting subframe according to the NPDCCH sending cycle and the offset value parameter；
It is specifically applied in the embodiment of the present invention, UE can join according to the NPDCCH sending cycle and deviant of the subframe
Number determines starting subframe, and sub-frame number is fixed in a NPDCCH sending cycle, solid to this according to the offset value parameter
The subframe of fixed number amount is shifted, and can determine the position of the starting subframe.
For example, the offset value parameter includes the first offset value parameter and the second offset value parameter, and described first
Deviating value parameter includes the first sub- deviant, the second sub- deviant, the sub- deviant of third and the 4th sub- deviant, and described first partially
Moving value parameter can obtain according to preset formula operation, for example, the first sub- deviant is 0, the second son after default operation
Deviant is 1/8, the sub- deviant of third be 1/4 and the 4th sub- deviant be 3/8, in embodiments of the present invention, by maximum repeat
Number Rmax, initial position parameter G determine NPDCCH sending cycle T, determine that the NPDCCH is sent by offset value parameter offset
Starting subframe in cycle T, that is, the position deviated be T*offset, wherein if Rmax be 8, G 2, offset 1/8, then
NPDCCH sending cycle (sending cycle T (T=Rmax*G)) is 16 (2*8) a subframes, and offset is that 1/8 representative deviates 2 (1/8*
16) a subframe determines the 3rd subframe for starting subframe using the 1st subframe as starting point.
Step 104, the UE determines candidate blind examination parameter sets according to the NPDCCH maximum number of repetitions parameter；
Further, which determines candidate blind examination parameter sets according to the NPDCCH maximum number of repetitions parameter, wherein
Candidate's blind examination parameter sets may include number of repetition and polymerization grade, which includes the first polymerization grade and second
Polymerization grade.
For example, when the NPDCCH maximum number of repetitions parameter is 64, then the number of repetition can for 8,16,32,
64, the polymerization grade of the above-mentioned number of repetition is 2, i.e. the second polymerization grade；In addition, when the NPDCCH maximum number of repetitions is joined
When number is 2, then number of repetition can be 1,2；Under when number of repetition is 1, the polymerization grade of number of repetition is 1 or 2, i.e.,
First polymerization grade or the second polymerization grade, it should be noted that above-mentioned corresponding relationship can be looked into according to agreement regulation
It askes and obtains.
Step 105, the UE is directed to institute by starting point of the starting subframe according to according to the candidate blind examination parameter sets
The subframe for stating carrying NPDCCH carries out blind examination, obtains Downlink Control Information；
In the embodiment of the present invention, candidate's blind examination parameter sets respectively include number of repetition and polymerization grade；It is described poly-
Closing grade includes the first polymerization grade and the second polymerization grade；The UE according to according to the candidate blind examination parameter sets with described
The step of originating subframe is subframe progress blind examination of the starting point for the carrying NPDCCH, obtains Downlink Control Information includes following
Sub-step:
Sub-step S1051 gathers according to first polymerization grade and described second respectively when the number of repetition is 1
It closes subframe of the grade using the starting subframe as starting point for the carrying NPDCCH and carries out blind examination, obtain Downlink Control Information；
Sub-step S1052, when the number of repetition is greater than 1, according to second polymerization grade with the starting subframe
Subframe for starting point for the carrying NPDCCH carries out blind examination, obtains Downlink Control Information.
In practical application, after UE has determined starting subframe in a search space (subframe for needing blind examination),
To detect according to polymerization grade to the CCE in subframe to originate subframe as starting point, Downlink Control Information is obtained；Wherein, often
A subframe includes that two CCE detect two CCE in each subframe in the first polymerization grade L '=1 respectively, can
It is denoted as { 0 }, { 1 }；In the second polymerization grade L '=2, two CCE in each subframe are detected simultaneously, can be denoted as 0,
1}；
Step 106, the UE carries out data interaction using the Downlink Control Information and the base station.
Specific in the embodiment of the present invention, after UE obtains the DCI in CCE, the Downlink Control Information and institute can be used
It states base station and carries out data interaction, such as receive downlink data in NPDSCH, or upstream data is sent by NPUSCH, the present invention is implemented
Example to this with no restriction.
In the embodiment of the present invention, the UE receives the MSG4 message of the base station；Wherein, the MSG4 message includes
NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；The UE is repeated according to the NPDCCH maximum
Count parameter and the initial position parameter determine that the base station sends the sending cycle of NPDCCH；The UE is according to
NPDCCH sending cycle and the offset value parameter determine the starting subframe；The UE repeats secondary according to the NPDCCH maximum
Number parameter determines candidate blind examination parameter sets；The UE is with the starting subframe according to according to the candidate blind examination parameter sets
Starting point carries out blind examination for the subframe of the carrying NPDCCH, obtains Downlink Control Information；The UE is controlled using the downlink
Information and the base station carry out data interaction；In the embodiment of the present invention, user nonoverlapping for NPDCCH, according to different weights
Again the offset value parameter for counting loop configuration user dedicated search spaces starting subframes reduces the search space NPDCCH between UE
Conflict is conducive to improve the ratio that NPDCCH occupies subframe.
Referring to Fig. 2, a kind of NPDCCH blind detection method embodiment based on narrowband Internet of Things of the embodiment of the present invention is shown
Two step flow chart, the narrowband Internet of Things include user equipment (UE) and base station, and the UE connect with the base station, specifically may be used
To include the following steps:
Step 201, the base station sends MSG4 message to the UE；Wherein, the MSG4 message includes NPDCCH maximum
Number of repetition parameter, initial position parameter and offset value parameter；
In the embodiment of the present invention, in the establishment process of RRC, which sends MSG4 message to the UE, wherein should
MSG4 message includes NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter.
In a kind of preferred embodiment of the embodiment of the present invention, the offset value parameter includes the first offset value parameter and second
Value parameter is deviated, the acquisition of the offset value parameter includes following sub-step:
Step S2011, the base station obtain minimum number of repetition parameter；
Step S2012, the base station are true using the NPDCCH maximum number of repetitions parameter and the initial position parameter
Determine deviant threshold value；
Step S2013, the base station judge whether the minimum number of repetition parameter is less than or equal to the deviant threshold
Value；
Step S2014, when the minimum number of repetition parameter is less than or equal to the deviant threshold value, the base station is then
Determine that the offset value parameter is the first offset value parameter；
Step S2015, when the minimum number of repetition parameter is greater than the deviant threshold value, the base station then determines institute
Stating offset value parameter is the second offset value parameter.
Specifically, the available minimum number of repetition parameter in base station, is further repeated using the NPDCCH maximum secondary
Number parameter and the initial position parameter determine deviant threshold value；And the minimum number of repetition parameter and deviant threshold value are carried out
Compare, when the minimum number of repetition parameter is less than or equal to the deviant threshold value, the base station then determines the offset
Value parameter is the first offset value parameter, which can be 0, which can also be 1/8,1/
4,3/8, when the minimum number of repetition parameter is greater than the deviant threshold value, the base station then determines the offset value parameter
Value parameter is deviated for second, and the second offset value parameter can be 0, i.e., do not shift；Base station is matched by the UE circulation of access
Set different offset value parameters.
It applies in the embodiment of the present invention, the first offset value parameter is inclined including the first sub- deviant, the second son
The sub- deviant of shifting value, third and the 4th sub- deviant, the method also includes: the base station according to the described first sub- deviant into
The default operation of row, obtains the second sub- deviant；The base station carries out default operation according to the described second sub- deviant, obtains third
Sub- deviant, the base station carries out default operation according to the sub- deviant of the third, obtains the 4th sub- deviant, i.e., by default
After operation, the first sub- deviant be 0, the second sub- deviant is 1/8, the sub- deviant of third be 1/4 and the 4th sub- deviant be
3/8。
Base station can obtain the second sub- deviant, acceptable basis according to the first sub- deviant by carrying out default operation
Second sub- deviant carries out default operation, obtains the sub- deviant of third；The formula of default operation is Offseti=((Offseti×
8+1)mod4)/8；Wherein, OffsetiTo deviate value parameter, i 0,1,2,3.
Step 202, the base station sends the subframe of carrying NPDCCH according to NPDCCH sending cycle；
Specific in the embodiment of the present invention, base station is determined according to NPDCCH maximum number of repetitions parameter and initial position parameter
NPDCCH sending cycle send carrying NPDCCH subframe.
Step 203, under the UE blind examination obtains the Downlink Control Information in the subframe and UE response is described
Row control information receive downlink data or send upstream data to the base station after, the base station according to the uplink and downlink data with
The UE carries out data interaction.
Specific in the embodiment of the present invention, after base station sends the subframe of carrying NPDCCH according to number of repetition, each UE can
According to the downlink in above-mentioned NPDCCH maximum number of repetitions parameter, initial position parameter and the deviant gain of parameter subframe
Information is controlled, after UE responds the Downlink Control Information reception downlink data or sends upstream data to the base station, base station is just
Data interaction can be carried out according to the uplink and downlink data and the UE.
In the embodiment of the present invention, the base station sends MSG4 message to the UE；Wherein, the MSG4 message includes
NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；It is sent out according to NPDCCH sending cycle the base station
Send the subframe of carrying NPDCCH；When the UE blind examination obtains Downlink Control Information and UE response institute in the subframe
After stating Downlink Control Information reception downlink data or sending upstream data to the base station, the base station is according to the line number up and down
Data interaction is carried out according to the UE；In the embodiment of the present invention, base station is directed to different demand scenes and different business models
The configuration of NPDCCH private resource is carried out, improves the flexibility and reliability of the configuration of NPDCCH private resource, not for NPDCCH
The user of overlapping reduces according to the offset value parameter of the starting subframe in different number of repetition loop configuration dedicated search spaces
The conflict of NPDCCH search space between UE is conducive to improve the ratio that NPDCCH occupies subframe.
To make those skilled in the art more fully understand the embodiment of the present invention, said below by way of a specific example
It is bright.
1, the configuration (npdcch-NumRepetitions-r13) of NPDCCH maximum number of repetitions parameter
This parameter represents the maximum number of repetitions of UE dedicated search space (USS) NPDCCH, value range are as follows: and 1,2,4,
8,16,32,64,128,256,512,1024,2048.UE monitors a system according to the NPDCCH maximum number of repetitions parameter of configuration
The numerical value (including polymerization grade, number of repetition and blind examination number etc.) of column.This parameter determined under every kind of coverage enhancement grade, UE
The polymerization grade for the NPDCCH for needing to detect in UE dedicated search space and the set of number of repetition.Following table gives Configuration Values
Corresponding relationship between possible number of repetition set.For example, if Configuration Values (i.e. join by NPDCCH maximum number of repetitions
Number Rmax) it is 64, it would be possible that the number of repetition used is 8,16,32,64.
Table 1: the corresponding relationship between Configuration Values and number of repetition set
Wherein the number of repetition with No. * indicates that this number of repetition supports that polymerization grade is 1 and polymerization grade is 2 two kinds
NPDCCH。
After base station is configured with Rmax to UE, the set of polymerization grade and number of repetition that base station may use is determined that,
UE removes blind examination NPDCCH according to this set.For example Rmax is 64, then actual number of repetition is likely to be 8,16,32,64,
The polymerization grade used is 2.It is because only that polymerization grade 2 just has repetition transmission that polymerization grade, which is 2, and polymerization grade 1 does not weigh
Recurrence is sent, i.e., when number of repetition is 1, polymerization grade has 1 and 2 two kind of situation, and when number of repetition is greater than 1, only polymerization grade is 2
A kind of this situation corresponds to the number of repetition of the band " * " number in table.Concrete principle is MAC (the Media Access of base station
Control, medium access control) layer is according to coverage enhancement grade and SINR (Signal to Interference plus Noise Ratio, the Signal of UE
To Interference plus Noise Ratio) value etc., map out candidate blind examination parameter sets (minimum polymerization needed for UE
Grade (the first polymerization grade)/number of repetition), it is reported to the rrc layer of base station.The rrc layer of base station needs most oligomeric according to UE
Grade/number of repetition is closed, suitable maximum number of repetitions is configured.The selection needs of Configuration Values consider the following factors:
1) the corresponding polymerization grade of Configuration Values/number of repetition set preferably includes minimum polymerization grade/number of repetition of UE,
It can choose most suitable polymerization grade/number of repetition in this way；
If 2) base station can adjust polymerization grade/number of repetition of UE selection in a RRC connection procedure of UE,
It is not base that then proposed arrangement, which is worth minimum polymerization grade/number of repetition in corresponding set and highest polymerization grade/number of repetition,
Minimum polymerization grade/the number of repetition for the UE that station reports can enable UE to both direction adjustment polymerization grade/repetition time in this way
Number；
3) Configuration Values suggestion is arranged to smaller as far as possible, the dispatcher of such UE can in the time domain can be more dispersed, less
It is easy to appear the case where dispatcher can all be stopped by other signals；
4) if to reach maximum handling capacity, minimum scheduling delay is then needed initial position parameter npdcch-
It is minimum value 1.5 that StartSF-USS-r13, which matches,.It is at least spaced 4ms since agreement limits two adjacency search spaces, this is matched
The minimum value for setting parameter is 8.
Assuming that minimum polymerization grade/number of repetition group that base station reports is combined into { ALi, Ri, it is contemplated that it is above-mentioned it is several because
Element, in the case where pursuing throughput-maximized and pursuit two kinds of scenes of economize on electricity, concrete configuration method are as follows:
If 1) pursuit is throughput-maximized, scheduling delay is minimum, and the Configuration Values of this parameter are max (Ri, 8).Match in this way
Setting can make Configuration Values small as far as possible, meet the requirement of big handling capacity, low scheduling delay, and be able to satisfy two adjacency search spaces extremely
It is spaced the limitation of 4ms less.
2) it otherwise, most economizes on electricity if pursued, the Configuration Values of this parameter are min (Ri×2,2048).Being configured so that can make
The corresponding set of Configuration Values includes Ri, and keep Configuration Values small as far as possible.
2, the configuration (npdcch-Offset-USS-r13) of value parameter is deviated
The time domain starting location offset value parameter of the NPDCCH in the dedicated search space, value range are as follows: 0,1/8,1/4,
3/8。
Be arranged offset value parameter the purpose is to reduce the conflict of the search space NPDCCH between UE, be conducive to improve in this way
NPDCCH occupies the ratio of subframe, under the premise of not improving the search space blind examination number of each UE, makes more downlink
Frame can dispatch NPDCCH.Therefore consider from this point, the search space NPDCCH that UE should be made to configure mutually staggers as far as possible.
If UE can uniformly be assigned to the N number of search space NPDCCH offset value parameter here, and every different deviants
The search space of parameter is not overlapped, then the UE in the corresponding search space of each offset value parameter needs to send each second
NPDCCH number is the 1/N of all UE, under identical collision probability requires, each offset value parameter corresponding search space each second
The NPDCCH number needed to configure also can be the 1/N of all UE NPDCCH number needed.As can be seen that N value is taken greatly as far as possible,
The duration of each UE monitoring search space NPDCCH can be reduced, UE is saved under the premise of not improving NPDCCH collision probability
Electricity.
In view of the value range and meaning of this parameter, it is proposed that UE to be evenly distributed in this 4 offset value parameters.But this
Sample has done a precondition, and after being exactly staggered from time domain, the NPDCCH number of all UE be will increase.If be staggered when
Between be insufficient to allow the NPDCCH of UE not to be overlapped, then be staggered and do not have any effect, at this time it is not recommended that offset.Whether be staggered can sentence
The search that the finish time for first NPDCCH in search space that disconnected offset value parameter is 0 and offset value parameter are 3/8 is empty
Between in the initial time of first NPDCCH whether can be overlapped in the time domain, as shown below.If, then recognize
For multiple offset value parameters can be configured, otherwise, it is not possible to configure.Wherein R is parameter npdcch-MaxNumRepetitions-
Minimum number of repetition needed for UE obtained in r13 calculating process.
Referring to Fig. 3, a kind of deviation post figure of starting subframe of the embodiment of the present invention is shown, as shown in figure 3, deviant
Parameter Offset can be 0,1/8,1/4,3/8；For the different offset value parameter of the UE loop configuration accessed every time, circulation is needed
Distinguish number of repetition, each number of repetition alone cycle.For configuring NPDCCH maximum number of repetitions parameter npdcch-
The R of each possible configuration of MaxNumRepetitions-r13iValue, the current offset value parameter Offset of base station maintenanceiValue.
This value is initialized as 0, and the value that can be taken is 0,1/8,1/4,3/8.If there is a UE enters RRC connected state, need to configure
When this parameter, Offset is configured by the npdcch-Offset-USS-r13 of this UEi, wherein i can be 0,1,2,3, according to
Following formula can be calculated:
If 1), wherein NPDCCH sending cycle T is (Rmax) npdcch-MaxNumRepetitions-
R13 is parameter npdcch-MaxNumRepetitions- multiplied by (initial position parameter G) npdcch-StartSF-USS-r13, R
Minimum number of repetition needed for UE obtained in r13 calculating process, then Offseti=((Offseti×8+1)mod4)/8。
2) otherwise Offseti=0
3, the configuration (npdcch-StartSF-USS-r13) of initial position parameter
The time domain of the NPDCCH in initial position parameter configuration dedicated search space originates subframe position, value range are as follows:
1.5,2,4,8,16,32,48,64.
The biggish NPDCCH period is configured if it is UE, is conducive to the economize on electricity of UE, but the dispatcher meeting of UE can be reduced, is increased
The scheduling delay of big UE., whereas if configuring the lesser NPDCCH period for UE, then it is unfavorable for the economize on electricity of UE, but will increase UE
Dispatcher meeting, reduce the scheduling delay of UE.So the Configuration Values in NPDCCH period are related to target to be achieved is thought.Specifically match
Set method are as follows:
If 1) pursuit is throughput-maximized, scheduling delay is minimum, and initial position parameter is 1.5 (density is maximum at this time).
2) it otherwise, pursues and most economizes on electricity, according to the covering grade of user, (each covering grade is configured according to management station's configuration
One value.
The configuration needs of management station are calculated according to concrete scene, the corresponding management station configuration of every kind of covering grade
Value.UE is estimated first from RRC connected state is entered to the NPDCCH number averagely needed into RRC Idle state.If can also know
The number for the maximum UE that road cell needs support, the UE distribution of various NPDCCH numbers of repetition and the business model of UE, then may be used
It determines for certain number of repetition, the NPDCCH number that cell needs send each second.
Assuming that the NPDCCH number of cell transmission per second is N, the repetition that every NPDCCH needs for certain number of repetition
Number is R, then can determine that NPDCCH each second needs holding time length is N × R, i.e. NPDCCH is close in down channel
Degree will at least reach 1/ (N × R).It is assured that out that be able to satisfy this close after compared with configurable initial position parameter G
Desired maximum initial position parameter G is spent, this initial position parameter G value is exactly the value configured.It is further noted that and wants when configuration
Ensure that calculated T value is more than or equal to 4, and NPDCCH transmission intercal is greater than 4ms twice.
Referring to Fig. 4, a kind of schematic diagram in dedicated search space of the embodiment of the present invention is shown, as shown in figure 4, by
Rmax, G determine NPDCCH sending cycle, determine the starting subframe in the NPDCCH sending cycle, that is, the position deviated by offset
It sets, wherein Rmax 8, G 2, offset 1/8, therefore NPDCCH sending cycle is 16 (2*8) a subframes, offset 1/8
2 (1/8*16) a subframes of offset are represented, determine the 3rd subframe for starting subframe；Specifically son can be carried out by following step
The blind examination of frame:
Step 1, base station configure Rmax, G, offset value of UE by MSG4；
Step 2, UE determine the NPDCCH sending cycle T (T=Rmax*G) of NPDCCH according to Rmax, G；
Step 3, UE determine the starting subframe in NPDCCH user's dedicated search space according to T and offset；
Step 4, UE determine possible number of repetition R and polymerization grade according to Rmax, that is, candidate when blind examination has been determined is blind
Examine parameter sets；
When step 5, base station need to carry out uplink/downlink data dispatch, NPDCCH is sent in corresponding position；
The case where step 6, UE carry out blind examination according to candidate blind examination parameter sets, are 1 for number of repetition in search space,
Needing is respectively 1 (the first polymerization grade) by polymerization grade and polymerization grade is that 2 (the second polymerization grades) are detected, for weight
Again the case where number is greater than 1 needs to be detected by polymerization grade for 2；
Step 7, UE carry out receiving or sending for data according to the DCI of detection.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
Referring to Fig. 5, a kind of NPDCCH blind examination Installation practice based on narrowband Internet of Things of the embodiment of the present invention is shown
Three structural block diagram, the narrowband Internet of Things include user equipment (UE) and base station, and the UE is connect with the base station, specifically can be with
Including following module:
Receiving module 301 receives the MSG4 message of the base station for the UE；Wherein, the MSG4 message includes
NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；
NPDCCH sending cycle determining module 302, for the UE according to the NPDCCH maximum number of repetitions parameter and
The initial position parameter determines that the base station sends the sending cycle of NPDCCH；
Sub- determining module 303 is originated, it is true according to the NPDCCH sending cycle and the offset value parameter for the UE
The fixed starting subframe；
Candidate blind examination parameter sets determining module 304, for the UE according to the NPDCCH maximum number of repetitions parameter
Determine candidate's blind examination parameter sets；
Downlink Control Information obtain module 305, for the UE according to according to it is described candidate blind examination parameter sets with described
Originating subframe is subframe progress blind examination of the starting point for the carrying NPDCCH, obtains Downlink Control Information；
First data interaction module 306 carries out data using the Downlink Control Information and the base station for the UE
Interaction.
Preferably, the NPDCCH sending cycle determining module includes:
NPDCCH sending cycle determines submodule, for the UE by the NPDCCH maximum number of repetitions parameter and described
Initial position parameter makees product calculation, obtains the NPDCCH sending cycle.
Preferably, the candidate blind examination parameter sets respectively include number of repetition and polymerization grade；The polymerization grade packet
Include the first polymerization grade and the second polymerization grade；The Downlink Control Information obtains module
First Downlink Control Information obtains submodule, for gathering according to described first respectively when the number of repetition is 1
It closes the subframe of grade and second polymerization grade using the starting subframe as starting point for the carrying NPDCCH and carries out blind examination,
Obtain Downlink Control Information；
First Downlink Control Information obtains submodule, for polymerizeing according to described second when the number of repetition is greater than 1
Subframe of the grade using the starting subframe as starting point for the carrying NPDCCH carries out blind examination, obtains Downlink Control Information.
Referring to Fig. 6, another NPDCCH blind examination device based on narrowband Internet of Things for showing the embodiment of the present invention is implemented
The structural block diagram of example four, the narrowband Internet of Things include base station and UE, and the base station is connect with the UE, can specifically include as
Lower module:
Subframe sending module 401 sends the subframe of carrying NPDCCH for the base station according to NPDCCH sending cycle；
Second data interaction module 402 obtains the Downlink Control Information in the subframe for working as the UE blind examination, and
After the UE responds the Downlink Control Information reception downlink data or sends upstream data to the base station, the base station foundation
The uplink and downlink data and the UE carry out data interaction.
Preferably, the module being connected with the subframe sending module further include:
Sending module sends MSG4 message to the UE for the base station；Wherein, the MSG4 message includes NPDCCH
Maximum number of repetitions parameter, initial position parameter and offset value parameter.
Preferably, described device further include:
Minimum number of repetition parameter acquisition module obtains minimum number of repetition parameter for the base station；
Deviant threshold determination module uses the NPDCCH maximum number of repetitions parameter and described for the base station
Beginning location parameter determines deviant threshold value；
Judgment module judges whether the minimum number of repetition parameter is less than or equal to the deviant for the base station
Threshold value；
First determining module is used for when the minimum number of repetition parameter is less than or equal to the deviant threshold value, institute
It states base station and then determines that the offset value parameter is the first offset value parameter；
Second determining module is used for when the minimum number of repetition parameter is greater than the deviant threshold value, the base station
Then determine that the offset value parameter is the second offset value parameter.
Preferably, it is described first offset value parameter include the first sub- deviant, the second sub- deviant, the sub- deviant of third and
4th sub- deviant, described device further include:
Second sub- deviant obtains module, carries out default operation according to the described first sub- deviant for the base station, obtains
Obtain the second sub- deviant；
The sub- deviant of third obtains module, carries out default operation according to the described second sub- deviant for the base station, obtains
Obtain the sub- deviant of third；
4th sub- deviant obtains module, carries out default operation according to the sub- deviant of the third for the base station, obtains
Obtain the 4th sub- deviant.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Narrowband is based on to a kind of NPDCCH blind detection method based on narrowband Internet of Things provided by the present invention and one kind above
The NPDCCH blind examination device of Internet of Things, is described in detail, and specific case used herein is to the principle of the present invention and reality
The mode of applying is expounded, and the above description of the embodiment is only used to help understand the method for the present invention and its core ideas；Together
When, for those of ordinary skill in the art, according to the thought of the present invention, have in specific embodiments and applications
Change place, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (14)
1. a kind of NPDCCH blind detection method based on narrowband Internet of Things, which is characterized in that the narrowband Internet of Things includes that user sets
Standby UE and base station, the UE are connect with the base station, which comprises
The UE receives the MSG4 message of the base station；Wherein, the MSG4 message includes protenchyma reason down control channel
NPDCCH maximum number of repetitions parameter, initial position parameter and offset value parameter；
The UE determines the base station according to the NPDCCH maximum number of repetitions parameter and the initial position parameter
NPDCCH sending cycle；
The UE determines the starting subframe according to the NPDCCH sending cycle and the offset value parameter；
The UE determines candidate blind examination parameter sets according to the NPDCCH maximum number of repetitions parameter；
The UE is starting point for the son of the carrying NPDCCH using the starting subframe according to the candidate blind examination parameter sets
Frame carries out blind examination, obtains Downlink Control Information；
The UE carries out data interaction using the Downlink Control Information and the base station.
2. the method according to claim 1, wherein the UE is according to the NPDCCH maximum number of repetitions parameter
And the initial position parameter determines that the step of NPDCCH sending cycle of the base station includes:
The NPDCCH maximum number of repetitions parameter and the initial position parameter are made product calculation by the UE, described in acquisition
NPDCCH sending cycle.
3. the method according to claim 1, wherein candidate's blind examination parameter sets respectively include number of repetition
And polymerization grade；The polymerization grade includes the first polymerization grade and the second polymerization grade；The UE is according to the candidate blind examination
Subframe of the parameter sets using the starting subframe as starting point for the carrying NPDCCH carries out blind examination, obtains Downlink Control Information
The step of include:
When the number of repetition is 1, respectively according to first polymerization grade and second polymerization grade with the starting
Subframe is subframe progress blind examination of the starting point for the carrying NPDCCH, obtains Downlink Control Information；
When the number of repetition is greater than 1, held using the starting subframe as starting point for described according to second polymerization grade
The subframe for carrying NPDCCH carries out blind examination, obtains Downlink Control Information.
4. a kind of NPDCCH blind detection method based on narrowband Internet of Things, which is characterized in that the narrowband Internet of Things include base station and
UE, the base station are connect with the UE, which comprises
The base station sends the subframe of carrying NPDCCH according to NPDCCH sending cycle；
When the UE blind examination obtains Downlink Control Information in the subframe and the UE responds the Downlink Control Information and connects
After receiving downlink data or sending upstream data to the base station, the base station is counted according to the uplink and downlink data with the UE
According to interaction.
5. according to the method described in claim 4, it is characterized in that, the base station sends carrying according to NPDCCH sending cycle
Before the step of subframe of NPDCCH further include:
The base station sends MSG4 message to the UE；Wherein, the MSG4 message include NPDCCH maximum number of repetitions parameter,
Initial position parameter and offset value parameter.
6. according to the method described in claim 5, it is characterized in that, the offset value parameter includes the first offset value parameter and the
Two offset value parameters, the offset value parameter obtain in the following manner:
The base station obtains minimum number of repetition parameter；
The base station determines deviant threshold value using the NPDCCH maximum number of repetitions parameter and the initial position parameter；
The base station judges whether the minimum number of repetition parameter is less than or equal to the deviant threshold value；
When the minimum number of repetition parameter is less than or equal to the deviant threshold value, the base station then determines the deviant
Parameter is the first offset value parameter；
When the minimum number of repetition parameter is greater than the deviant threshold value, the base station then determines that the offset value parameter is
Second offset value parameter.
7. according to the method described in claim 6, it is characterized in that, it is described first offset value parameter include the first sub- deviant,
Second sub- deviant, the sub- deviant of third and the 4th sub- deviant, the method also includes:
The base station carries out default operation according to the described first sub- deviant, obtains the second sub- deviant；
The base station carries out default operation according to the described second sub- deviant, obtains the sub- deviant of third；
The base station carries out default operation according to the sub- deviant of the third, obtains the 4th sub- deviant.
8. a kind of NPDCCH blind examination device based on narrowband Internet of Things, which is characterized in that the narrowband Internet of Things includes UE and base
It stands, the UE is connect with the base station, and described device includes:
Receiving module receives the MSG4 message of the base station for the UE；Wherein, the MSG4 message includes NPDCCH maximum
Number of repetition parameter, initial position parameter and offset value parameter；
NPDCCH sending cycle determining module, for the UE according to the NPDCCH maximum number of repetitions parameter and the starting
Location parameter determines the NPDCCH sending cycle of the base station；Wherein,
Subframe determining module is originated, for the UE according to the NPDCCH sending cycle and offset value parameter determination
Originate subframe；
Candidate blind examination parameter sets determining module determines candidate according to the NPDCCH maximum number of repetitions parameter for the UE
Blind examination parameter sets；
Downlink Control Information obtains module, is with the starting subframe according to the candidate blind examination parameter sets for the UE
Point carries out blind examination for the subframe of the carrying NPDCCH, obtains Downlink Control Information；
First data interaction module carries out data interaction using the Downlink Control Information and the base station for the UE.
9. device according to claim 8, which is characterized in that the NPDCCH sending cycle determining module includes:
NPDCCH sending cycle determines submodule, is used for the UE for the NPDCCH maximum number of repetitions parameter and the starting
Location parameter makees product calculation, obtains the NPDCCH sending cycle.
10. device according to claim 8, which is characterized in that candidate's blind examination parameter sets respectively include repeating secondary
Several and polymerization grade；The polymerization grade includes the first polymerization grade and the second polymerization grade；The Downlink Control Information obtains
Module includes:
First Downlink Control Information obtains submodule, is used for when the number of repetition is 1, respectively according to described first polymerization etc.
The subframe of grade and second polymerization grade using the starting subframe as starting point for the carrying NPDCCH carries out blind examination, obtains
Downlink Control Information；
First Downlink Control Information obtains submodule, is used for when the number of repetition is greater than 1, according to second polymerization grade
Subframe using the starting subframe as starting point for the carrying NPDCCH carries out blind examination, obtains Downlink Control Information.
11. a kind of NPDCCH blind examination device based on narrowband Internet of Things, which is characterized in that the narrowband Internet of Things include base station and
UE, the base station are connect with the UE, and described device includes:
Subframe sending module sends the subframe of carrying NPDCCH for the base station according to NPDCCH sending cycle；
Second data interaction module, for obtaining Downlink Control Information and the UE in the subframe when the UE blind examination
It responds after the Downlink Control Information receives downlink data or send upstream data to the base station, the base station is according on described
Downlink data and the UE carry out data interaction.
12. device according to claim 11, which is characterized in that the module being connected with the NPDCCH sending module is also wrapped
It includes:
Sending module sends MSG4 message to the UE for the base station；Wherein, the MSG4 message includes NPDCCH maximum
Number of repetition parameter, initial position parameter and offset value parameter.
13. device according to claim 12, which is characterized in that described device further include:
Minimum number of repetition parameter acquisition module obtains minimum number of repetition parameter for the base station；
Deviant threshold determination module uses the NPDCCH maximum number of repetitions parameter and the start bit for the base station
It sets parameter and determines deviant threshold value；
Judgment module judges whether the minimum number of repetition parameter is less than or equal to the deviant threshold for the base station
Value；
First determining module is used for when the minimum number of repetition parameter is less than or equal to the deviant threshold value, the base
It stands, determines that the offset value parameter is the first offset value parameter；
Second determining module, for when the minimum number of repetition parameter is greater than the deviant threshold value, the base station to be then true
The fixed offset value parameter is the second offset value parameter.
14. device according to claim 13, which is characterized in that the first offset value parameter includes the first son offset
Value, the second sub- deviant, the sub- deviant of third and the 4th sub- deviant, described device further include:
Second sub- deviant obtains module, carries out default operation according to the described first sub- deviant for the base station, obtains the
Two sub- deviants；
The sub- deviant of third obtains module, carries out default operation according to the described second sub- deviant for the base station, obtains the
Three sub- deviants；
4th sub- deviant obtains module, carries out default operation according to the sub- deviant of the third for the base station, obtains the
Four sub- deviants.
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| CN112702302A (en) * | 2019-10-22 | 2021-04-23 | 苏州磐联集成电路科技股份有限公司 | Scheduling method for user equipment end of narrow-band Internet of things |
| WO2022002250A1 (en) * | 2020-07-03 | 2022-01-06 | 维沃移动通信有限公司 | Pdcch monitoring method, sending method, and related device |
| CN114430309A (en) * | 2022-01-28 | 2022-05-03 | 芯翼信息科技(上海)有限公司 | Blind detection method, device, equipment and medium for narrow-band physical downlink control channel |
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