CN109041224A - Control transmission and detection method, base station, user equipment and the storage medium of information - Google Patents
Control transmission and detection method, base station, user equipment and the storage medium of information Download PDFInfo
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- CN109041224A CN109041224A CN201710428570.4A CN201710428570A CN109041224A CN 109041224 A CN109041224 A CN 109041224A CN 201710428570 A CN201710428570 A CN 201710428570A CN 109041224 A CN109041224 A CN 109041224A
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- aggregation level
- dci format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Abstract
The present invention provide it is a kind of control information transmission and detection method, base station, user equipment and storage medium, the transmission method of the control information is used for base station, it include: to select aggregation level set corresponding with the DCI format of user equipment from multiple aggregation level sets；From aggregation level set corresponding with the DCI format of user equipment, a polymerization grade is selected；Using the polymerization grade of selection, Downlink Control Information is sent to the user equipment.In the present invention, base station is when sending Downlink Control Information to user equipment, from multiple aggregation level sets, select aggregation level set corresponding with the DCI format of user equipment, it is different from the method that all DCI formats in the prior art are all made of identical aggregation level set, method of the invention can satisfy the covering performance demand of different DCI formats, and can reduce the blind Detecting number of user equipment.
Description
Technical field
The present invention relates to wireless communication technology field more particularly to it is a kind of control information transmission and detection method, base station,
User equipment and storage medium.
Background technique
In existing LTE system, down control channel (PDCCH, Physical Downlink Control Channel) is adopted
It is carried out with different control signaling formats (DCI format, Downlink control information format) different
The transmission of control information under transmission mode (Transmission Mode).The letter of different DCI format (format) transmission
Enable content and bit number different.For guarantee the user equipment under different channels state to the reception reliability of down control channel,
There are 1,/2/,4/8 4 kinds of different polymerization grades (AL, Aggregation Level) for the transmission of existing down control channel, i.e.,
One PDCCH includes 1/2/4/8 control channel unit (CCE, control channel element).Base station can according to
The channel status of family equipment, the flexible polymerization grade for configuring user equipment.
Existing base station is all made of identical aggregation level set in transmission.Design of the 3GPP NR about downlink DCI
In, considering the bit number of the DCI format under different transmission modes, there may be biggish difference, two kinds of potential DCI ratios
Special number is about 20 bits and 60 bits.If still using identical aggregation level set for different DCI lengths, it is understood that there may be no
The problem not corresponded to DCI format transmission covering performance.Since under identical polymerization grade, the DCI of 60 bit lengths
Format is worse compared to the covering performance of the DCI format of 20 bit lengths.
In addition, user equipment carries out blind Detecting in polymerization grade of the receiving end to use.To reduce blind Detecting number, at present
Two kinds of polymerization grades 4 and 8 are only existed for public search space.But for the search space of user-specific, every kind of DCI
Format needs successively to carry out blind Detecting there may be 1,2,4,8 these four polymerization grades, and blind Detecting number is more.
Summary of the invention
In view of this, the present invention provide it is a kind of control information transmission and detection method, base station, user equipment and storage be situated between
Matter leads to different DCI format transmission spreadabilities for solving different DCI format using identical aggregation level set
The problem that can not be corresponded to.
In order to solve the above technical problems, the present invention provides a kind of transmission method for controlling information, it to be used for base station, comprising:
From multiple aggregation level sets, aggregation level set corresponding with the DCI format of user equipment is selected；
From aggregation level set corresponding with the DCI format of user equipment, a polymerization grade is selected；
Using the polymerization grade of selection, Downlink Control Information is sent to the user equipment.
Preferably, the transmission method of the control information further include:
Record the corresponding relationship of DCI format and aggregation level set, wherein the difference of bit number is greater than the DCI of preset threshold
Format corresponds to different aggregation level sets；Alternatively, the different DCI format of bit number corresponds to different aggregation level sets.
Preferably, in different aggregation level sets, the corresponding coverage distance of at least first polymerization grade or link budget
Difference coverage distance corresponding with the last one polymerization grade or link budget difference be no more than preset threshold.
Preferably, before the step of corresponding relationship of the record DCI format and aggregation level set further include:
Configure the corresponding relationship of DCI format and aggregation level set.
Preferably, the step of corresponding relationship of the configuration DCI format and aggregation level set includes:
Calculate the coverage distance or link budget of polymerization grade；
According to the coverage distance or link budget of polymerization grade, the corresponding relationship of DCI format and aggregation level set is configured,
Wherein, in different aggregation level sets, the difference of the corresponding coverage distance of at least first polymerization grade or link budget and last
The difference of the corresponding coverage distance of one aggregation level set or link budget is no more than preset threshold.
Preferably, the step of corresponding relationship of the configuration DCI format and aggregation level set includes:
According to transmission channel coding speed, the corresponding relationship of DCI format and aggregation level set is configured, wherein belong to same
The transmission channel coding rate of each polymerization grade in one aggregation level set is located in same section.
Preferably, described from aggregation level set corresponding with the DCI format of user equipment, select a polymerization grade
Step includes:
According to the channel status of user equipment, from aggregation level set corresponding with the DCI format of user equipment, selection
One polymerization grade.
The present invention also provides a kind of detection methods for controlling information, are used for user equipment, comprising:
Determine the DCI format that user equipment uses；
According to the DCI format that user equipment uses, the polymerization grade that the Downlink Control Information received may use is determined
Set；
Blind Detecting is carried out according to the aggregation level set.
Preferably, the DCI format used according to user equipment determines that the Downlink Control Information received may use
Aggregation level set the step of before further include:
Record the corresponding relationship of DCI format and aggregation level set, wherein the difference of bit number is greater than the DCI of preset threshold
Format corresponds to different aggregation level sets；Alternatively, the different DCI format of bit number corresponds to different aggregation level sets.
Preferably, in different aggregation level sets, the corresponding coverage distance of at least first polymerization grade or link budget
Difference coverage distance corresponding with the last one polymerization grade or link budget difference be no more than preset threshold.
The present invention also provides a kind of base stations, comprising:
Processor, for selecting polymerization grade corresponding with the DCI format of user equipment from multiple aggregation level sets
Set；From aggregation level set corresponding with the DCI format of user equipment, a polymerization grade is selected；
Transmitter sends Downlink Control Information to the user equipment for the polymerization grade using selection.
Preferably, the base station further include:
Memory, for recording the corresponding relationship of DCI format and aggregation level set, wherein the difference of bit number is greater than pre-
If the DCI format of threshold value corresponds to different aggregation level sets；Alternatively, the different DCI format of bit number corresponds to different polymerizations
Class set.
Preferably, in the corresponding different aggregation level sets of the different DCI formats of the memory storage, at least first
The difference of the corresponding coverage distance of polymerization grade or link budget coverage distance corresponding with the last one polymerization grade or link are pre-
The difference calculated is no more than preset threshold.
Preferably, the processor is also used to configure the corresponding relationship of DCI format and aggregation level set.
Preferably, the processor is also used to calculate the coverage distance or link budget of polymerization grade；According to polymerization grade
Coverage distance or link budget, configure DCI format and aggregation level set corresponding relationship, wherein different polymerization grade collection
In conjunction, the difference of the corresponding coverage distance of at least first polymerization grade or link budget is corresponding with the last one aggregation level set
Coverage distance or link budget difference be no more than preset threshold.
Preferably, the processor is also used to configure DCI format and polymerization grade collection according to transmission channel coding speed
The corresponding relationship of conjunction, wherein the transmission channel coding rate for belonging to each polymerization grade in same aggregation level set is located at together
In one section.
Preferably, the processor is also used to the channel status according to user equipment, from the DCI format with user equipment
In corresponding aggregation level set, a polymerization grade is selected.
The present invention also provides a kind of user equipmenies, comprising:
Processor, the DCI format used for determining user equipment；According to the DCI format that user equipment uses, determination is connect
The aggregation level set that the Downlink Control Information received may use；Blind Detecting is carried out according to the aggregation level set.
Preferably, the user equipment further include:
Memory, for recording the corresponding relationship of DCI format and aggregation level set, wherein the difference of bit number is greater than pre-
If the DCI format of threshold value corresponds to different aggregation level sets；Alternatively, the different DCI format of bit number corresponds to different polymerizations
Class set.
Preferably, in the corresponding different aggregation level sets of the different DCI formats of the memory storage, at least first
The difference of the corresponding coverage distance of polymerization grade or link budget coverage distance corresponding with the last one polymerization grade or link are pre-
The difference calculated is no more than preset threshold.
The present invention also provides a kind of base station, including memory, processor and it is recorded on the memory and can be described
The computer program run on processor；The processor realizes the transmission method of above-mentioned control information when executing described program.
The present invention also provides a kind of user equipment, including memory, processor and it is recorded on the memory and can be
The computer program run on the processor；The processor realizes the detection side of above-mentioned control information when executing described program
Method.
The present invention also provides a kind of computer readable storage mediums, and record has computer program thereon, and the program is processed
Device realizes the step in the transmission method of above-mentioned control information when executing, or the detection side of above-mentioned control information is realized when execution
Step in method.
The advantageous effects of the above technical solutions of the present invention are as follows:
Base station is when sending Downlink Control Information to user equipment, and from multiple aggregation level sets, selection is set with user
The corresponding aggregation level set of standby DCI format is different from all DCI formats in the prior art and is all made of identical polymerization etc.
The method of grade set, method of the invention can satisfy the covering performance demand of different DCI formats, and can reduce user equipment
Blind Detecting number.
Detailed description of the invention
Fig. 1 is the flow diagram of the transmission method of the control information of the embodiment of the present invention；
Fig. 2 is the flow diagram of the detection method of the control information of the embodiment of the present invention；
Fig. 3 is that the user resources in the aggregation level set of the DCI format1 in the embodiment of the present invention one map signal
Figure；
Fig. 4 is that the user resources in the aggregation level set of the DCI format2 in the embodiment of the present invention one map signal
Figure；
Fig. 5 is that the user resources in the aggregation level set of the DCI format1 in the embodiment of the present invention two map signal
Figure；
Fig. 6 is that the user resources in the aggregation level set of the DCI format2 in the embodiment of the present invention two map signal
Figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to FIG. 1, the embodiment of the present invention provides a kind of transmission method for controlling information, it to be used for base station, comprising:
Step 11: from multiple aggregation level sets, selecting polymerization grade collection corresponding with the DCI format of user equipment
It closes；
Step 12: from aggregation level set corresponding with the DCI format of user equipment, selecting a polymerization grade.
Step 13: using the polymerization grade of selection, sending Downlink Control Information to the user equipment.
In the embodiment of the present invention, base station is when sending Downlink Control Information to user equipment, from multiple aggregation level sets
In, aggregation level set corresponding with the DCI format of user equipment is selected, it is equal to be different from all DCI formats in the prior art
Using the method for identical aggregation level set, method of the invention can satisfy the covering performance demand of different DCI formats, and
The blind Detecting number of user equipment can be reduced.
In the embodiment of the present invention, PDCCH DCI format generally includes following several: DCI 0, DCI 1, DCI 1A, DCI
1B, DCI 1C, DCI 1D, DCI 2, DCI 2A, DCI 2B, DCI 3 and DCI 3A.In the signaling of different DCI format transmission
Hold and bit number is different.Certainly, with the continuous development of cordless communication network, PDCCH DCI format may also will include other
Type.
In the embodiment of the present invention, base station selects corresponding with the DCI format of user equipment from multiple aggregation level sets
Before the step of aggregation level set, further includes: base station determines the DCI format of user equipment.
In the embodiment of the present invention, it is preferable that base station can determine the DCI format that user equipment uses in the following manner:
The transmission mode that base station will be used according to it to the information and user data transmission of user device transmissions determines that user equipment uses
DCI format bit number.Base station to the information of user device transmissions may include: paging (paging), SI (system information),
RAR scheduling information, down dispatch information, uplink power control information or uplink scheduling information etc.；The transmission that user data transmission uses
Mode may include: open loop MIMO (Multiple-Input Multiple-Output, multichannel go out into multichannel)), closed-loop MIMO,
Single codeword transmission, more codeword transmissions etc..
In the embodiment of the present invention, the elements A L for including in aggregation level set meets AL=2n, wherein n be more than or equal to
0 integer.For example, n can be 0,1,2,3, corresponding AL is respectively 1,2,4,8.To guarantee that there are the DCI lattice of larger bit number
The covering performance of formula, AL is except 1,2,4,8, it is also possible to can be designed using higher polymerization grade, (i.e. such as polymerization grade 16
N=4) etc..
It, in some embodiments of the invention, can be in order to meet the covering performance demand of the different DCI format of bit number
It is greater than the different polymerization etc. of DCI format (i.e. bit number differ greatly DCI format) configuration of preset threshold for the difference of bit number
Grade set.The preset threshold can be set as needed.
For example, for the DCI format of 20 bits, corresponding aggregation level set can be { 1,2,4,8 }；For 60
The DCI format of bit, corresponding aggregation level set are { 2,4,8,16 }.
Alternatively, in some other embodiment of the invention, or the different DCI format of bit number configures different
Aggregation level set.That is, the different DCI format of all bit numbers corresponds to different aggregation level sets, thus further full
The different covering performance demand of foot.
In the embodiment of the present invention, base station can recorde the corresponding relationship of DCI format and aggregation level set.When base station needs
When sending Downlink Control Information to user equipment, according in the corresponding relationship of the DCI format of record and aggregation level set, from more
In a aggregation level set, aggregation level set corresponding with the DCI format of user equipment is selected.Preferably, the DCI lattice of record
In the corresponding relationship of formula and aggregation level set, the DCI format that the difference of bit number is greater than preset threshold corresponds to different polymerizations etc.
Grade set；Alternatively, the different DCI format of bit number corresponds to different aggregation level sets.
In order to guarantee that different DCI formats has similar covering power, it is preferable that the corresponding difference of different DCI formats
In aggregation level set, the difference of the corresponding coverage distance of at least first polymerization grade or link budget and the last one polymerization etc.
The difference of the corresponding coverage distance of grade or link budget is no more than preset threshold.
For example, for DCI format1, corresponding aggregation level set is { 1,2,4,8 }；For DCI
Format2, corresponding aggregation level set are { 2,4,8,16 }.
Wherein, the corresponding coverage distance of first polymerization grade 1 in the corresponding aggregation level set of DCI format1 or
Link budget, the corresponding coverage distance of first polymerization grade 2 or chain in aggregation level set corresponding with DCI format2
The difference of road budget is no more than preset threshold, i.e., the two is roughly equal.
The last one corresponding coverage distance of polymerization grade 8 or chain in the corresponding aggregation level set of DCI format1
Road budget, the last one corresponding coverage distance of polymerization grade 16 in aggregation level set corresponding with DCI format2 or
The difference of link budget is no more than preset threshold, i.e., the two is roughly equal.
Coverage distance and link budget are one-to-one relationships, can obtain corresponding covering by calculating link budget
Distance.Link budget can be obtained according to existing link budget calculation method, be not described in detail herein.
In the embodiment of the present invention, base station can also configure the corresponding relationship of DCI format and aggregation level set.
In the embodiment of the present invention, base station can be closed using a variety of methods configuration DCI format is corresponding with aggregation level set
System, citing is illustrated below.
Method one: the coverage distance or link budget of polymerization grade are calculated；According to the coverage distance or link of polymerization grade
Budget configures the corresponding relationship of DCI format and aggregation level set, wherein in different aggregation level sets, at least first poly-
Close the difference coverage distance corresponding with the last one aggregation level set or link of the corresponding coverage distance of grade or link budget
The difference of budget is no more than preset threshold.
That is, guaranteeing the corresponding coverage distance of the aggregation level set of the DCI format under different bit numbers or link budget base
This is consistent, so that the different DCI format of bit number has similar covering power.
For example, the bit number of DCI format 1 and DCI format2 is respectively M1 and M2；
The corresponding aggregation level set of DCI format1 are as follows:
AL1={ AL1,1, AL1,2..., AL1,k, whereinK=1,2 ..., K；
The corresponding aggregation level set of DCI format2 are as follows:
AL2={ AL2,1, AL2,2..., AL2,k, whereinK=1,2 ..., K；
Wherein, K is the positive integer more than or equal to 1.
Then, at least guarantee f (M1,AL1,1)≈f(M2,AL2,1) and f (M1,AL1,k)≈f(M2,AL2,k)
That is, the corresponding link budget of the aggregation level set of DCI format1 is corresponding with the link budget of DCI format2
Coverage distance it is almost the same.
Wherein, f (M, AL) is the link budget function of DCI format, and wherein M is the corresponding bit of DCI format
Number, AL are used polymerization grade when DCI format is transmitted.
Method two: according to transmission channel coding speed, the corresponding relationship of DCI format and aggregation level set is configured, wherein
The transmission channel coding rate for belonging to each polymerization grade in same aggregation level set is located in same section.
Under normal conditions, transmission channel coding speed is bigger, and corresponding polymerization grade is smaller, so that bit number is different
DCI format have similar covering power.
Method two is illustrated combined with specific embodiments below.
In one embodiment, it is assumed that PDCCH uses QPSK (quadrature phase shift keying, Quadrature Phase
Shift Keyin) it is modulated transmission, the method for configuring the corresponding relationship of DCI format and aggregation level set may include:
It is located in all polymerization grades in a section [TH1, TH2] from transmission channel coding rate, selects available
Polymerization grade forms the set class set of a DCI format, and the set class set meets: { AL=2n, wherein n meetsAnd n is the integer more than or equal to 0, M is DCI format
Bit number, 16 be the length of cyclic redundancy check, the resource unit number that N includes, 0 < TH1 < 1,0 < TH2 < 1 by a CCE.
In above-described embodiment, base station selects a polymerization from aggregation level set corresponding with the DCI format of user equipment
The step of grade may include: the channel status according to user equipment, from polymerization grade corresponding with the DCI format of user equipment
In set, a polymerization grade is selected.
In the preferred embodiment of the present invention, base station can be according to CQI (Channel Quality Indicator, letter
The instruction of road quality) polymerization grade that determines DCI format, when CQI is larger, polymerization grade is lower, when CQI is lower, polymerization etc.
Grade is higher.
Preferably, in the various embodiments described above, the bit number of DCI format is 20 or 60.Certainly, the bit number of DCI format is not
It is limited to 20 and 60, according to specific needs, or other numerical value.
Referring to FIG. 2, the embodiment of the present invention also provides a kind of detection method for controlling information, it to be used for user equipment, comprising:
Step 21: determining the DCI format that user equipment uses；
Step 22: the DCI format used according to user equipment determines that the Downlink Control Information received may use poly-
Close class set；
Step 22: blind Detecting is carried out according to the aggregation level set.
Compared with prior art, in the embodiment of the present invention, by the way that different aggregation level sets is arranged, user equipment is only needed
Blind Detecting is carried out in possible aggregation level set, do not need to carry out blind examination in each possible polymerization grade
It surveys, it is possible to reduce the number of user's blind Detecting reduces the expense of user equipment.
For example, according to the detection method of existing control information, the DCI format1 of 20 bits and 60 bits
The aggregation level set of DCI format2 identical may be set as { 1,2,4,8,16 }.Every kind of DCI format requires blind examination
Survey 5 kinds of polymerization grades.In the embodiment of the present invention, the DCI format1 aggregation level set of 20 bits is { 1,2,4,8 }, 60 ratios
Special DCI format2 aggregation level set is { 2,4,8,16 }, and every kind of DCI format only needs 4 kinds of blind Detecting polymerizations etc.
Grade, to reduce the number of user's blind Detecting, reduces the expense of user equipment.
In the embodiment of the present invention, it is preferable that user equipment records the corresponding relationship of DCI format and aggregation level set, from
And the aggregation level set that the Downlink Control Information received may use can be determined according to the corresponding relationship of record,
The determination process is simple and effective.Preferably, in the DCI format of record and the corresponding relationship of aggregation level set, the difference of bit number
Different aggregation level sets is corresponded to greater than the DCI format of preset threshold；Alternatively, the corresponding difference of DCI format that bit number is different
Aggregation level set, to meet the covering performance demand of the different DCI format of bit number.
In order to guarantee that different DCI formats has similar covering power, it is preferable that the corresponding difference of different DCI formats
In aggregation level set, the difference of the corresponding coverage distance of at least first polymerization grade or link budget and the last one polymerization etc.
The difference of the corresponding coverage distance of grade or link budget is no more than preset threshold.
In the embodiment of the present invention, it is preferable that the user equipment determines that the step of DCI format that user equipment uses can be with
It include: the bit number that DCI format that it is used is determined according to its transmission mode.
It is carried out below with reference to transmission method of some specific embodiments to the control information in the above embodiment of the present invention detailed
It describes in detail bright.
Embodiment one
Assuming that the bit number that the bit number of DCI format 1 is 20, DCI format2 is 60, match for DCI format1
The aggregation level set set be { 1,2,4,8 }, be DCI format2 configuration aggregation level set be { 2,4,8,16 }.
The transmission control letter in the control resource collection that size is 20MHz (110PRB) of 1~user equipment of user equipment 4
Breath.The DCI format of transmission is respectively DCI format1, DCI format1, DCI format2, DCI format2, user
The polymerization grade that 1~user equipment of equipment 4 uses is respectively 1,2,8,16.
Fig. 3 and Fig. 4 are please referred to, Fig. 3 is the use in the aggregation level set of the DCI format1 in the embodiment of the present invention one
Family resource impact schematic diagram.Fig. 4 is the user resources in the aggregation level set of the DCI format2 in the embodiment of the present invention one
Map schematic diagram.
In the embodiment of the present invention, the different DCI format of bit number corresponds to different aggregation level sets, from corresponding polymerization
In class set, selective polymerization grade is transmitted, and the DCI format for being different from all bit numbers in the prior art is all made of phase
The method of same aggregation level set, method of the invention can satisfy the covering performance demand of the different DCI format of bit number,
And the blind Detecting number of user equipment can be reduced.
Embodiment two
The size of control channel resource collection 1 is 20MHz (110PRB), and the size of control channel resource collection 2 is 5MHz
(25PBR).User equipment 1 and user equipment 2 carry out in control channel resource collection 1 and control channel resource collection 2 respectively
Transmission.
The bit number that the bit number of DCI format 1 is 20, DCI format2 is 60, for DCI format1 configuration
Aggregation level set be { 1,2,4,8 }, be DCI format2 configuration aggregation level set be { 2,4,8 }.1 He of user equipment
The DCI format that user equipment 2 transmits is respectively DCI format1, DCI format2.DCI format2, user equipment 1
The polymerization grade used with user equipment 2 is respectively 8,2.
Fig. 5 and Fig. 6 are please referred to, Fig. 5 is the use in the aggregation level set of the DCI format1 in the embodiment of the present invention two
Family resource impact schematic diagram.Fig. 6 is the user resources in the aggregation level set of the DCI format2 in the embodiment of the present invention two
Map schematic diagram.
In the embodiment of the present invention, the different DCI format of bit number corresponds to different aggregation level sets, from corresponding polymerization
In class set, selective polymerization grade is transmitted, and the DCI format for being different from all bit numbers in the prior art is all made of phase
The method of same aggregation level set, method of the invention can satisfy the covering performance demand of the different DCI format of bit number,
And the blind Detecting number of user equipment can be reduced.
Based on the same inventive concept, the embodiment of the present invention also provides a kind of base station, comprising:
Processor, for selecting polymerization grade corresponding with the DCI format of user equipment from multiple aggregation level sets
Set；From aggregation level set corresponding with the DCI format of user equipment, a polymerization grade is selected；
Transmitter sends Downlink Control Information to the user equipment for the polymerization grade using selection.
In the embodiment of the present invention, base station is when sending Downlink Control Information to user equipment, from multiple aggregation level sets
In, aggregation level set corresponding with the DCI format of user equipment is selected, it is equal to be different from all DCI formats in the prior art
Using the method for identical aggregation level set, method of the invention can satisfy the covering performance demand of different DCI formats, and
The blind Detecting number of user equipment can be reduced.
In the embodiment of the present invention, PDCCH DCI format generally includes following several: DCI 0, DCI 1, DCI 1A, DCI
1B, DCI 1C, DCI 1D, DCI 2, DCI 2A, DCI 2B, DCI 3 and DCI 3A.In the signaling of different DCI format transmission
Hold and bit number is different.Certainly, with the continuous development of cordless communication network, PDCCH DCI format may also will include other
Type.
In the embodiment of the present invention, the processor is from multiple aggregation level sets, the DCI format of selection and user equipment
Before the step of corresponding aggregation level set, further includes: the processor determines the DCI format of user equipment.
In the embodiment of the present invention, it is preferable that base station can determine the DCI format that user equipment uses in the following manner:
The transmission mode that base station will be used according to it to the information and user data transmission of user device transmissions determines that user equipment uses
DCI format bit number.Base station to the information of user device transmissions may include: paging (paging), SI (system information),
RAR scheduling information, down dispatch information, uplink power control information or uplink scheduling information etc.；The transmission that user data transmission uses
Mode may include: open loop MIMO (Multiple-Input Multiple-Output, multichannel go out into multichannel)), closed-loop MIMO,
Single codeword transmission, more codeword transmissions etc..
In the embodiment of the present invention, the elements A L for including in aggregation level set meets AL=2n, wherein n be more than or equal to
0 integer.For example, n can be 0,1,2,3, corresponding AL is respectively 1,2,4,8.To guarantee that there are the DCI lattice of larger bit number
The covering performance of formula, AL is except 1,2,4,8, it is also possible to can be designed using higher polymerization grade, (i.e. such as polymerization grade 16
N=4) etc..
It, in some embodiments of the invention, can be in order to meet the covering performance demand of the different DCI format of bit number
It is greater than the different polymerization etc. of DCI format (i.e. bit number differ greatly DCI format) configuration of preset threshold for the difference of bit number
Grade set.The preset threshold can be set as needed.
For example, for the DCI format of 20 bits, corresponding aggregation level set can be { 1,2,4,8 }；For 60
The DCI format of bit, transmitting adoptable aggregation level set is { 2,4,8,16 }.
Alternatively, in some other embodiment of the invention, or the different DCI format of bit number configures different
Aggregation level set.That is, the different DCI format of all bit numbers corresponds to different aggregation level sets, thus further full
The different covering performance demand of foot.
In the embodiment of the present invention, base station can recorde the corresponding relationship of DCI format and aggregation level set.When base station needs
When sending Downlink Control Information to user equipment, according in the corresponding relationship of the DCI format of record and aggregation level set, from more
In a aggregation level set, aggregation level set corresponding with the DCI format of user equipment is selected.Preferably, the DCI lattice of record
In the corresponding relationship of formula and aggregation level set, the DCI format that the difference of bit number is greater than preset threshold corresponds to different polymerizations etc.
Grade set；Alternatively, the different DCI format of bit number corresponds to different aggregation level sets.
That is, the base station can also include: memory, for recording the corresponding relationship of DCI format and aggregation level set,
Wherein, the DCI format that the difference of bit number is greater than preset threshold corresponds to different aggregation level sets；Alternatively, bit number is different
DCI format corresponds to different aggregation level sets.
In order to guarantee that different DCI formats has similar covering power, it is preferable that the difference of the memory storage
In the corresponding different aggregation level sets of DCI format, the corresponding coverage distance of at least first polymerization grade or link budget it
The difference of difference coverage distance corresponding with the last one polymerization grade or link budget is no more than preset threshold.
Preferably, the processor is also used to configure the corresponding relationship of DCI format and aggregation level set.
In the embodiment of the present invention, it is corresponding with aggregation level set that processor can configure in several ways DCI format
Relationship, citing is illustrated below.
In some embodiments of the invention, the processor is also used to calculate the coverage distance or link of polymerization grade
Budget；According to the coverage distance or link budget of polymerization grade, the corresponding relationship of DCI format and aggregation level set is configured,
In, in different aggregation level sets, the difference of the corresponding coverage distance of at least first polymerization grade or link budget and last
The difference of the corresponding coverage distance of a aggregation level set or link budget is no more than preset threshold.
In other embodiment of the invention, the processor is also used to according to transmission channel coding speed, configuration
The corresponding relationship of DCI format and aggregation level set, wherein belong to the transmission of each polymerization grade in same aggregation level set
Channel coding rate is located in same section [TH1, TH2], 0 < TH1 < 1,0 < TH2 < 1.
Under normal conditions, transmission channel coding speed is bigger, and corresponding polymerization grade is smaller, so that bit number is different
DCI format have similar covering power.
In above-described embodiment, the processor is also used to the channel status according to user equipment, from user equipment
In the corresponding aggregation level set of DCI format, a polymerization grade is selected.
Preferably, in the various embodiments described above, the bit number of DCI format is 20 or 60.Certainly, the bit number of DCI format is not
It is limited to 20 and 60, according to specific needs, or other numerical value.
The embodiment of the present invention also provides a kind of user equipment, comprising:
Processor, the DCI format used for determining user equipment；According to the DCI format that user equipment uses, determination is connect
The aggregation level set that the Downlink Control Information received may use；Blind Detecting is carried out according to the aggregation level set.
Compared with prior art, in the embodiment of the present invention, by the way that different aggregation level sets is arranged, user equipment is only needed
Blind Detecting is carried out in possible aggregation level set, do not need to carry out blind examination in each possible polymerization grade
It surveys, it is possible to reduce the number of user's blind Detecting reduces the expense of user equipment.
In the embodiment of the present invention, it is preferable that user equipment records the corresponding relationship of DCI format and aggregation level set, from
And the aggregation level set that the Downlink Control Information received may use can be determined according to the corresponding relationship of record,
The determination process is simple and effective.Preferably, in the DCI format of record and the corresponding relationship of aggregation level set, the difference of bit number
Different aggregation level sets is corresponded to greater than the DCI format of preset threshold；Alternatively, the corresponding difference of DCI format that bit number is different
Aggregation level set, to meet the covering performance demand of the different DCI format of bit number.
That is, the user equipment can also include: memory, for the DCI format of record and pair of aggregation level set
It should be related to, the DCI format that the difference of bit number is greater than preset threshold corresponds to different aggregation level sets；Alternatively, bit number is different
DCI format correspond to different aggregation level sets, to meet the covering performance demand of the different DCI format of bit number.
Preferably, in the corresponding different aggregation level sets of the different DCI formats of the memory storage, at least first
The difference of the corresponding coverage distance of polymerization grade or link budget coverage distance corresponding with the last one polymerization grade or link are pre-
The difference calculated is no more than preset threshold.
In the embodiment of the present invention, it is preferable that the processor is also used to determine its DCI used according to its transmission mode
The bit number of format.
The embodiment of the present invention also provides a kind of base station, including memory, processor and is recorded on the memory and can
The computer program run on the processor；The processor is realized in any of the above-described embodiment when executing described program
Control the transmission method of information.
The embodiment of the present invention also provides a kind of user equipment, including memory, processor and is recorded on the memory
And the computer program that can be run on the processor；The processor realizes any of the above-described embodiment when executing described program
In control information detection method.
The embodiment of the present invention also provides a kind of computer readable storage medium, and record has computer program thereon, the program
It is realized when realizing the step in the transmission method of the control information in any of the above-described embodiment when being executed by processor, or executing
Step in the detection method of control information in any of the above-described embodiment.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (23)
1. a kind of transmission method for controlling information, is used for base station characterized by comprising
From multiple aggregation level sets, aggregation level set corresponding with the DCI format of user equipment is selected；
From aggregation level set corresponding with the DCI format of user equipment, a polymerization grade is selected；
Using the polymerization grade of selection, Downlink Control Information is sent to the user equipment.
2. the transmission method of control information according to claim 1, which is characterized in that further include:
Record the corresponding relationship of DCI format and aggregation level set, wherein the difference of bit number is greater than the DCI format of preset threshold
Corresponding different aggregation level set；Alternatively, the different DCI format of bit number corresponds to different aggregation level sets.
3. the transmission method of control information according to claim 2, which is characterized in that in different aggregation level sets, until
The difference coverage distance corresponding with the last one polymerization grade of few corresponding coverage distance of first polymerization grade or link budget
Or the difference of link budget is no more than preset threshold.
4. it is according to claim 2 or 3 control information transmission method, which is characterized in that the record DCI format with gather
Before the step of closing the corresponding relationship of class set further include:
Configure the corresponding relationship of DCI format and aggregation level set.
5. it is according to claim 4 control information transmission method, which is characterized in that the configuration DCI format with polymerize
The step of corresponding relationship of class set includes:
Calculate the coverage distance or link budget of polymerization grade；
According to the coverage distance or link budget of polymerization grade, the corresponding relationship of DCI format and aggregation level set is configured,
In, in different aggregation level sets, the difference of the corresponding coverage distance of at least first polymerization grade or link budget and last
The difference of the corresponding coverage distance of a aggregation level set or link budget is no more than preset threshold.
6. it is according to claim 4 control information transmission method, which is characterized in that the configuration DCI format with polymerize
The step of corresponding relationship of class set includes:
According to transmission channel coding speed, the corresponding relationship of DCI format and aggregation level set is configured, wherein belong to same poly-
The transmission channel coding rate for closing each polymerization grade in class set is located in same section.
7. the transmission method of control information according to claim 1, which is characterized in that the DCI from user equipment
In the corresponding aggregation level set of format, select a polymerization grade the step of include:
According to the channel status of user equipment, from aggregation level set corresponding with the DCI format of user equipment, one is selected to gather
Close grade.
8. a kind of detection method for controlling information, is used for user equipment characterized by comprising
Determine the DCI format that user equipment uses；
According to the DCI format that user equipment uses, the aggregation level set that the Downlink Control Information received may use is determined；
Blind Detecting is carried out according to the aggregation level set.
9. it is according to claim 8 control information detection method, which is characterized in that it is described according to user equipment use
Before the step of DCI format, the aggregation level set that the determining Downlink Control Information received may use further include:
Record the corresponding relationship of DCI format and aggregation level set, wherein the difference of bit number is greater than the DCI format of preset threshold
Corresponding different aggregation level set；Alternatively, the different DCI format of bit number corresponds to different aggregation level sets.
10. the detection method of control information according to claim 9, which is characterized in that in different aggregation level sets, until
The difference coverage distance corresponding with the last one polymerization grade of few corresponding coverage distance of first polymerization grade or link budget
Or the difference of link budget is no more than preset threshold.
11. a kind of base station characterized by comprising
Processor, for selecting polymerization grade collection corresponding with the DCI format of user equipment from multiple aggregation level sets
It closes；From aggregation level set corresponding with the DCI format of user equipment, a polymerization grade is selected；
Transmitter sends Downlink Control Information to the user equipment for the polymerization grade using selection.
12. base station according to claim 11, which is characterized in that further include:
Memory, for recording the corresponding relationship of DCI format and aggregation level set, wherein the difference of bit number is greater than default threshold
The DCI format of value corresponds to different aggregation level sets；Alternatively, the different DCI format of bit number corresponds to different polymerization grades
Set.
13. base station according to claim 12, which is characterized in that the different DCI formats of the memory storage are corresponding
In different aggregation level sets, the difference of the corresponding coverage distance of at least first polymerization grade or link budget is poly- with the last one
The difference for closing the corresponding coverage distance of grade or link budget is no more than preset threshold.
14. base station according to claim 12 or 13, which is characterized in that the processor, be also used to configure DCI format with
The corresponding relationship of aggregation level set.
15. base station according to claim 14, which is characterized in that the processor is also used to calculate covering for polymerization grade
Lid distance or link budget；According to the coverage distance or link budget of polymerization grade, DCI format and aggregation level set are configured
Corresponding relationship, wherein in different aggregation level sets, the corresponding coverage distance of at least first polymerization grade or link budget it
The difference of difference coverage distance corresponding with the last one aggregation level set or link budget is no more than preset threshold.
16. base station according to claim 14, which is characterized in that the processor is also used to according to transmission channel coding
Speed configures the corresponding relationship of DCI format and aggregation level set, wherein belong to each polymerization in same aggregation level set
The transmission channel coding rate of grade is located in same section.
17. base station according to claim 11, which is characterized in that the processor is also used to the letter according to user equipment
Road state selects a polymerization grade from aggregation level set corresponding with the DCI format of user equipment.
18. a kind of user equipment characterized by comprising
Processor, the DCI format used for determining user equipment；According to the DCI format that user equipment uses, determination is received
The aggregation level set that may use of Downlink Control Information；Blind Detecting is carried out according to the aggregation level set.
19. user equipment according to claim 18, which is characterized in that further include:
Memory, for recording the corresponding relationship of DCI format and aggregation level set, wherein the difference of bit number is greater than default threshold
The DCI format of value corresponds to different aggregation level sets；Alternatively, the different DCI format of bit number corresponds to different polymerization grades
Set.
20. user equipment according to claim 19, which is characterized in that the different DCI formats pair of the memory storage
In the different aggregation level sets answered, the difference of the corresponding coverage distance of at least first polymerization grade or link budget and last
The difference of the corresponding coverage distance of a polymerization grade or link budget is no more than preset threshold.
21. a kind of base station, including memory, processor and it is recorded on the memory and can runs on the processor
Computer program；It is characterized in that, the processor realizes such as the described in any item controls of claim 1-7 when executing described program
The transmission method of information processed.
22. a kind of user equipment, including memory, processor and it is recorded on the memory and can transports on the processor
Capable computer program；It is characterized in that, the processor is realized when executing described program such as any one of claim 8~10 institute
The detection method for the control information stated.
23. a kind of computer readable storage medium, record has computer program thereon, which is characterized in that the program is by processor
It is realized when realizing the step in the transmission method of control information as described in any one of claims 1 to 7 when execution, or executing
As claim 8~10 it is described in any item control information detection method in step.
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