CN108282249A - A kind of transmission method and device of control information - Google Patents
A kind of transmission method and device of control information Download PDFInfo
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- CN108282249A CN108282249A CN201710008435.4A CN201710008435A CN108282249A CN 108282249 A CN108282249 A CN 108282249A CN 201710008435 A CN201710008435 A CN 201710008435A CN 108282249 A CN108282249 A CN 108282249A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
- H04L1/0013—Rate matching, e.g. puncturing or repetition of code symbols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
- H04L1/0063—Single parity check
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Abstract
This application discloses a kind of transmission methods of control information and transmitting device and corresponding communication equipment, in the transmission method, the network equipment scrambles control information bit to be encoded using RNTI, the position for the control information bit being scrambled includes the position of PC fixed bit set, and the length of RNTI is greater than or equal to 16.By the above-mentioned means, the network equipment supports longer RNTI, the access of extensive internet of things equipment can be preferably supported.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of transmission methods and device of control information.
Background technology
In wireless network communications system, base station identifies different ends often through identification information in dispatch terminal
End, base station sends control information by the scrambled mode of identification information.
For example, radio network temporary identifier (English：Radio Network Temporary Identifier, abbreviation：
RNTI) it is long term evolution (English：Long Term Evolution, abbreviation：LTE a kind of) mark of the base station to terminal in system
Information.Existing RNTI length is 16bits.As shown in Figure 1, in Physical Downlink Control Channel (English：Physical Downlink
Control Channel, abbreviation：PDCCH in cataloged procedure), base station is first to the Downlink Control Information to be sent (English：
Downlink Control Information, abbreviation：DCI cyclic redundancy check (English) is carried out：Cyclical
Redundancy Check, abbreviation：CRC it) encodes, obtains 16 CRC sequences, then base station is by 16 RNTI information and 16
CRC information makees exclusive or (English：Exclusive OR, abbreviation：XOR (namely Scrambling Operation)) is operated, obtains and is scrambled by RNTI
16 CRC sequences, 16 CRC sequences after RNTI is scrambled are concatenated into above-mentioned DCI information, and carry out channel coding, modulation,
Mapping and transmission flow.
Defined in the 5th generation (5th Generation, 5G) communication system and follow-up more possible communication systems
Three categories scene respectively enhances mobile broadband (English：Enhanced Mobile Broadband, referred to as：EMBB), surpassing can
By low delay communication (English：Ultra Reliable Low Latency Communications, referred to as：URLLC it) and greatly advises
Mould Internet of Things Network Communication (English：Massive Machine Type Communications, abbreviation：mMTC).Wherein, eMBB industry
Business is mainly characterized by that transmitted data amount is big, transmission speed mainly comprising ultra high-definition video, augmented reality AR, Virtual Reality etc.
Rate is very high.URLLC business is mainly used for Industry Control in Internet of Things, unmanned etc., be mainly characterized by ultrahigh reliability,
Low delay, transmitted data amount are less and with sudden.MMTC business is mainly used for intelligent grid in Internet of Things, wisdom
City etc. is mainly characterized by the delay that bulk device connects, transmitted data amount is small, tolerates the long period.
The maximum blind examination number of PDCCH blind examinations is provided in LTE standard up to tens times, multiple blind examination leads to the receiver of terminal
Power consumption is big and height receives time delay.In addition, the terminal quantity that the RNTI of 16bits length can be identified is only 65536, it cannot
Meets the needs of mMTC application scenarios mass terminations access.
Invention content
In view of this, the main object of the present invention is to provide a kind of transmission method and transmitting device of control information, it is used for
Solve the demand of mMTC application scenarios mass terminations access.
In a first aspect, this application provides a kind of transmission method of control information, it is applied in wireless network, this method packet
It includes：Network equipment using terminal mark scrambles control information bit to be encoded, the control information bit being scrambled
Position includes the position of even-odd check PC fixed bit set；Control information bit after scrambling is used pole by the network equipment
Property Polar codes encoded, and the obtained bit sequence of coding is sent to terminal.
Second aspect, this application provides a kind of transmitting devices of control information, are applied in wireless communication system, the dress
Set including：Scrambling unit, using terminal mark scramble control information bit to be encoded, the control information ratio being scrambled
Special position includes the position of even-odd check PC fixed bit set；Coding unit uses the control information bit after scrambling
Polarity Polar codes are encoded；The bit sequence that coding obtains is sent to terminal by transmission unit.
The third aspect, this application provides a kind of communication equipment, which includes：
Memory, for storing program；
Processor, the described program for executing memory storage, when described program is performed, the processor
Using terminal mark scrambles control information bit to be encoded, and the position for the control information bit being scrambled includes odd even
Verify the position of PC fixed bit set；Control information bit after scrambling is used pole by the processor to the network equipment
Property Polar codes are encoded；
Transceiver, the bit sequence for obtaining coding are sent to other equipment.
Fourth aspect, this application provides a kind of transmission methods of control information, are applied in wireless network, this method packet
It includes：Terminal receives the bit sequence that base station is sent, and the bit sequence is that base station carries out control information bit using Polar codes
It is obtained after coding；The terminal determines the bit position of terminal iidentification and value, the bit of the terminal iidentification in the Polar codes
Position includes even-odd check fixed bit set；The terminal is using the terminal iidentification to the bit position pair determined
The bit answered carries out descrambling and obtains the fixed bit set and the even-odd check fixed bit set；The terminal uses institute
Fixed bit set and the even-odd check fixed bit set and check equations are stated to the bit sequence into row decoding, are obtained
Information bit set, described information bit set include Downlink Control Information DCI and cyclic redundancy check (CRC) sequence；The end
End carries out DCI described in descrambling and the terminal-pair using the terminal iidentification to the CRC sequences in described information bit set
CRC check is done, if CRC check passes through, obtains DCI.
5th aspect, this application provides a kind of transmitting devices of control information, are applied in wireless communication system, the dress
Set including：Acquiring unit, the bit sequence for receiving base station transmission, the bit sequence are that base station uses Polar codes to control
Information bit processed obtains after being encoded；Determination unit, for determine in the Polar codes bit position of terminal iidentification and
Value, the bit position of the terminal iidentification includes even-odd check fixed bit set；Descrambling unit, for using the terminal mark
Know and the descrambling acquisition fixed bit set and the even-odd check are carried out to the corresponding bit in the bit position determined
Fixed bit set, and the CRC sequences in described information bit set are descrambled using the terminal iidentification；Decoding is single
Member, for using the fixed bit set and the even-odd check fixed bit set and check equations to the bit sequence
Into row decoding, information bit set is obtained, described information bit set includes Downlink Control Information DCI and cyclic redundancy check
CRC sequences；Verification unit, if CRC check passes through, obtains DCI for doing CRC check to the DCI.
6th aspect, this application provides a kind of communication equipment, which includes：
Transceiver, the bit sequence for receiving base station transmission, the bit sequence are that base station uses Polar codes to control
Information bit obtains the bit sequence that coding obtains being sent to other equipment after being encoded.
Memory, for storing program；
Processor, the described program for executing memory storage, when described program is performed, the processor
Determine the bit position of terminal iidentification and value in the Polar codes, the bit position of the terminal iidentification includes that even-odd check is solid
Determine bit set；The processor descrambles the corresponding bit in the bit position determined using the terminal iidentification
Obtain the fixed bit set and the even-odd check fixed bit set；The processor uses the fixed bit set
Information bit set is obtained into row decoding to the bit sequence with the even-odd check fixed bit set and check equations,
Described information bit set includes Downlink Control Information DCI and cyclic redundancy check (CRC) sequence；The processor uses the end
End mark carries out DCI described in descrambling and the terminal-pair to the CRC sequences in described information bit set and does CRC check, if
CRC check passes through, and obtains DCI.It is connected by bus 404 between transceiver 401, memory 402, processor 403.
In conjunction with all of above aspect, in a kind of possible design, it is described be scrambled control information bit position into
One step includes following at least one portion：The position of the position and fixed bit set of cyclic redundancy check (CRC) sequence.
In conjunction with all of above aspect, in a kind of possible design, the terminal iidentification is radio network temporary identifier
The length of RNTI, RNTI are greater than or equal to 16bits.
In conjunction with all of above aspect, in a kind of possible design, the control information bit to be encoded includes information
Bit set, described information bit set include Downlink Control Information DCI and the CRC sequences, and the CRC sequences are by described
DCI encodes to obtain using CRC.
The network equipment scrambles control information bit to be encoded using RNTI in the application, the control letter being scrambled
The position of breath bit includes the position of PC fixed bit set, the position of CRC sequences and the position of fixed bit set, and
The length of RNTI is greater than or equal to 16.The application is also described carries RNTI by the initial value of register.Pass through above-mentioned side
Formula, the network equipment support longer RNTI, can preferably support the access of extensive internet of things equipment.
Description of the drawings
Fig. 1 is the process of PDCCH blind examinations in LTE standard.
Fig. 2 is the basic flow chart of wireless communication.
Fig. 3 is the application scenario diagram of the embodiment of the present application.
Fig. 4 is the construction example of Polar codes.
Fig. 5 is the construction example of PC-Polar codes.
Fig. 6 is the shift register schematic diagram of PC-Polar codes.
Fig. 7 is the flow chart that the application controls information transferring method.
Fig. 8 is the structure chart that the application controls information carrying means.
Fig. 9 is the first exemplary plot that the application controls scrambling processes in information transferring method.
Figure 10 is the second exemplary plot that the application controls scrambling processes in information transferring method.
Figure 11 is the third exemplary plot that the application controls scrambling processes in information transferring method.
Figure 12 is the 4th exemplary plot that the application controls scrambling processes in information transferring method.
Figure 13 is the 5th exemplary plot that the application controls scrambling processes in information transferring method.
Figure 14 is the exemplary plot that the application controls register manipulation in information transferring method.
Figure 15 is the structure chart for the communication equipment that the application controls information transmission.
Figure 16 is the flow chart that the application another kind controls information transferring method.
Figure 17 is the structure chart that the application another kind controls information carrying means.
Figure 18 is that the application decodes improved flow chart.
Figure 19 is that the application decodes improved analogous diagram.
Specific implementation mode
The specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 2 is the basic procedure of wireless communication, and in transmitting terminal, information source passes through message sink coding, channel coding, rate successively
With with sent out after digital modulation.In receiving terminal, it is defeated to pass sequentially through digital demodulation, solution rate-matched, channel decoding and source coding
Go out the stay of two nights.Polar codes may be used in channel coding/decoding, due to original Polar codes (female code) code length be 2 integral number power,
Through-rate matching is needed to realize the Polar codes of arbitrary code length in practical application.Shown in Fig. 2, transmitting terminal is after channel coding
It carries out rate-matched and realizes arbitrary target code length, solution rate-matched is first carried out before receiving terminal, channel decoding.
The embodiment of the present application can be applied to wireless communication system, and wireless communication system is usually made of cell, Mei Ge little
Area includes a base station (English：Base Station, referred to as：BS), base station is (English to multiple mobile stations：Mobile
Station, referred to as：MS communication service) is provided, wherein base station is connected to equipment of the core network, as shown in Figure 3.
It should be noted that the wireless communication system that the embodiment of the present application refers to includes but not limited to：Narrowband Internet of Things system
System (English：Narrow Band-Internet of Things, referred to as：NB-IoT), global system for mobile communications (English：
Global System for Mobile Communications, referred to as：GSM), enhanced data rates for gsm evolution system
(English：Enhanced Data rate for GSM Evolution, referred to as：EDGE), broadband CDMA system (English：
Wideband Code Division Multiple Access, referred to as：WCDMA), CDMA 2000 system (English：Code
Division Multiple Access, referred to as：CDMA2000), TDS-CDMA system (English：Time
Division-Synchronization Code Division Multiple Access, referred to as：TD-SCDMA), drill for a long time
Into system (English：Long Term Evolution, referred to as：) and three big applied fields of next generation's 5G mobile communication system LTE
Scape eMBB, URLLC and eMTC.
In the embodiment of the present application, the base station is that one kind is deployed in wireless access network to provide wireless communication work(for UE
The device of energy.The base station may include various forms of macro base stations, micro-base station (also referred to as small station), relay station, access point etc..
In the system using different wireless access technologys, the title for having the equipment of base station functions may be different, for example,
In LTE system, the node B (evolved NodeB, eNB or eNodeB) of referred to as evolution, in the third generation (English：3rd
Generation, referred to as：3G) in system, referred to as node B (English：Node B) etc..For convenience of description, all implementations of the application
In example, the above-mentioned device that wireless communication function is provided for UE is referred to as base station or BS.
In the embodiment of the present application involved MS may include various handheld devices with wireless communication function, it is vehicle-mounted
Equipment, wearable device, computing device or the other processing equipments for being connected to radio modem.The MS is referred to as
Terminal (English：Terminal), it can also include subscriber unit (English：Subscriber unit), cellular phone (English：
Cellular phone), smart phone (English：Smart phone), wireless data card, personal digital assistant (English：
Personal Digital Assistant, referred to as：PDA) computer, plate computer, radio modem (English：
Modem), handheld device (English：Handset), laptop computer (English：Laptop computer), machine type communication
(English：Machine Type Communication, referred to as：MTC) terminal etc..For convenience of description, all embodiments of the application
In, apparatus mentioned above is referred to as MS.
In 3GPP (English：3rd Generation Partnership Project, Chinese：Third generation affiliate counts
Draw) RAN1 (English：Radio Access Network, Chinese：Wireless access network) in 87 meetings, polarity Polar codes are formal
It is received as 5G eMBB (English：Enhanced Mobile Broadband) scene uplink/downlink control channel channel coding side
Case.
Simple introduction is done to Polar codes below.
Communication system generally use channel coding improves the reliability of data transmission, to ensure the quality of communication.Turkey
The Polar codes that professor Arikan is proposed, which are first, theoretically to be proved that Shannon capacity can be reached and has low encoding and decoding complexity
Code.Polar codes are also a kind of linear block code, encoder matrix GN, cataloged procedure isWhereinIt is a binary row vector, length is N (i.e. code length)；GNIt is the matrix of a N × N, andIt is defined as log2N number of matrix F2Kronecker (Kronecker) product.Above-mentioned matrix
In the cataloged procedure of Polar codes,In a part of bit be used for carry information, referred to as information bit set, this
The set of the index of a little bits is denoted as A；In addition a part of bit is set as the fixed value that sending and receiving end is made an appointment, referred to as solid
Determine bit set or freeze bit set (frozen bits), the collection of index shares the supplementary set A of AcIt indicates.The volume of Polar codes
Code process is equivalent to：Here, GN.(A) it is GN.In it is corresponding by the index in set A
The submatrix that those rows obtain, GN.(AC) it is GN.In by set AcIn the obtained submatrix of those of the corresponding row of index.uAForIn information bit set, quantity K；ForIn fixed bit set, quantity be (N-K), be known bits.
These fixed bits are normally provided as 0, as long as but sending and receiving end make an appointment, fixed bit can be arranged generally randomly.To,
The coding output of Polar codes can be reduced to：Here uAForIn information bit set, uAFor length K's
Row vector, i.e., | A |=K, | | indicate that the number of element in set, K are information block size, GN(A) it is matrix GNIn by set A
In the obtained submatrix of those of the corresponding row of index, GN(A) be a K × N matrix.
The construction process of Polar codes is the selection process of set A, determines the performance of Polar codes.The construction of Polar codes
Process is typically to co-exist in N number of polarisation channel according to female code code length N determinations, correspond to N number of row of encoder matrix respectively, calculate pole
Change channel reliability, the element by the index of the higher preceding K polarisation channel of reliability as set A, remaining (N-K) a polarization
Index set A of the corresponding index of channel as fixed bitcElement.Set A determines the position of information bit, set Ac
Determine the position of fixed bit.From encoder matrix as can be seen that the code length of original Polar codes (female code) be 2 integral number power,
Through-rate matching is needed to realize the Polar codes of arbitrary code length in practical applications.
Fig. 4 is a kind of construction example of Polar codes, wherein { u1, u2, u3, u5 } is set as fixed bit set, will
{ u4, u6, u7, u8 } is set as information bit set, and 4 information bits in information vector for being 4 by length are encoded into 8 volumes
Code bit.
PC-Polar is to introduce even-odd check (English：Parity Check, referred to as：PC Polar codes).PC-Polar exists
Parity Check Bits are introduced in vector to be encoded, Fig. 5 show the example of the PC-Polar of a 8x8, it is seen that the 5th to be encoded
Bit is the duplication of the 4th bit to be encoded.In PC-Polar, the value of PC fixed bit set is that serial number is less than PC fixed bit collection
The function of the information bit of conjunction, duplication are a kind of special circumstances.
Shift register is introduced in existing PC-Polar schemes to generate the value of PC fixed bit set, as shown in Figure 6.
The register for initializing a specific length first, as shown in the left sides Fig. 6, when encountering information bit, the value of information bit
It is put into register.As can be taken from the right side of fig. 6, when encountering PC fixed bit set, the value in register is read and is put into PC and is consolidated
Determine the coding site of bit set.
It should be noted that the Polar codes mentioned in the application are PC-Polar codes.
This application provides a kind of control information transferring method, this method can be applied to the network equipment, such as：In Fig. 3
Base station or baseband processing unit (English：Baseband Unit, referred to as：BBU).Fig. 7 is the control information transferring method
Flow chart, be as follows：
Step 210：Network equipment using terminal mark scrambles control information bit to be encoded, the control being scrambled
The position of information bit processed includes the position of even-odd check PC fixed bit set.
Optionally, the position of the control information bit being scrambled further comprises following at least one portion：Cycle
The position of the position and fixed bit set of redundancy check CRC sequences.
Step 220：The network equipment encodes the control information bit after scrambling using polarity Polar codes, and
The bit sequence that coding obtains is sent to terminal.
It should be noted that control information carrying means 300 shown in Fig. 8 may be implemented in step 210- steps 220
LDPC is encoded and the processes such as transmission.Wherein, scrambling unit 310 is for executing step 210, and coding unit 320 is for executing step
Cataloged procedure in 220, transmission unit 330 are used to execute the process for the bit sequence that the transmission coding in step 220 obtains.It should
It is, for example, base station to control information carrying means, which may be the special integrated electricity for realizing correlation function
Road (English：Application Specific Integrated Circuit, referred to as：) or chip ASIC.
Step 210- steps 220 are illustrated with reference to Fig. 9, Fig. 9 show Polar control information ratios to be encoded
Special (vector to be encoded), including information bit set, PC fixed bits set and fixed bit set.Wherein, information bit collection
Conjunction includes Downlink Control Information DCI and CRC sequence, which is encoded to obtain by DCI using CRC, the CRC sequence lengths
It is 16.
Wherein, the terminal iidentification in step 210 is radio network temporary identifier RNTI.It should be noted that LTE standard is advised
The length for determining RNTI is 16, and in 5G communication systems, the length of RNTI not yet defines, and the length that RNTI is set in the application is big
In or equal to 16.For example, RNTI length is 20, and most multipotency identifies 1,048,576 different terminals.Therefore, when
RNTI length is more than 16, can identify hundreds of thousands platform even station terminals up to a million simultaneously, can meet under 5G network eMTC scenes
Access the demand of magnanimity internet of things equipment.
It should be noted that the position for the control information bit being scrambled in step 210 includes following implementations.
Embodiment 1：Scramble bits are set to the position of CRC sequences and position and the fixed bit set of PC fixed bit set
Position.
Position and PC fixed bit collection of the network equipment using RNTI to the CRC sequences in control information bit to be encoded
Behind the position of conjunction and the position scrambling of fixed bit set, then carry out Polar codings.Shown in Fig. 9, it is assumed that the length of RNTI is k
Position, and k>First 16 of 16, wherein RNTI scramble the position of the CRC sequences in control information bit to be encoded, RNTI
Remainder to the position of the position and fixed bit set of the PC fixed bit set in control information bit to be encoded
Scrambling.
It should be noted that the position of CRC sequences, the position of PC fixed bit set and the position of fixed bit set
Three scramble sequences set can be three inequality subsets of RNTI.There may also be the bit repeated letters for three scramble sequences
Breath, as long as the union for meeting three scramble sequences includes all bit informations of RNTI.
Embodiment 2：Scramble bits are set to the position of PC fixed bit set.
After the network equipment scrambles the PC fixed bit set in control information bit to be encoded using RNTI, then carry out
Polar is encoded.Shown in Figure 10, information bit set length is k, and PC fixed bit set length is m-k, and fixed bit set is long
Degree is n-m.Assuming that the length of RNTI is 18, and m-k>18.Reliability is arranged from high to low in selection PC fixed bit set
18 forward bit RNTI scramblings of name, it should be noted that close to the part of information bit set in PC fixed bit set
Reliability is forward.
Embodiment 3：Scramble bits are set to the position of the position and PC fixed bit set of CRC sequences.
Shown in Figure 11, information bit set length is k, and PC fixed bit set length is m-k, fixed bit set length
For n-m.The position of the PC fixed bit set of control information bit to be encoded is arrived in the part scrambling of RNTI by the network equipment,
Base station is by the remainder scrambling of RNTI to the position of the CRC sequences of control information bit to be encoded with the length 18 of RNTI
For, the 2 high of RNTI, the position of scrambling to PC fixed bit set, remaining 16 scramblings of RNTI are arrived CRC by the network equipment
The position of sequence.
It should be noted that the scramble sequence of position two of position and PC fixed bit set to CRC sequences can be with
It is two inequality subsets of RNTI.There may also be the bit informations repeated for two scramble sequences, as long as meeting two scrambling sequences
The union of row includes all bit informations of RNTI.
Optionally, control letter to be encoded is scrambled after the network equipment handles RNTI partial contents by specific function again
The position of the PC fixed bit set of bit is ceased, as shown in figure 12, by taking the length 18 of RNTI as an example, by the high 2bit weights of RNTI
6bit is obtained after multiple 3 times, by 6bit scramblings to the position of PC fixed bit set, remaining 16bit scramblings are to CRC sequences in RNTI
The position of row.
Embodiment 4：Scramble bits are set to the position of the position and fixed bit set of PC fixed bit set.
The position of the PC fixed bit set of control information bit to be encoded is arrived in the part scrambling of RNTI by the network equipment,
The remainder of RNTI is scrambled the position of the fixed bit set to control information bit to be encoded by base station.With the length of RNTI
For degree 18, the 2 high of RNTI, the position of scrambling to PC fixed bit set, remaining 16 scramblings of RNTI are arrived in base station
The position of fixed bit set.
Optionally, control letter to be encoded is scrambled after the network equipment handles RNTI partial contents by specific function again
The position of the PC fixed bit set of bit is ceased, as shown in figure 12, by taking the length 18 of RNTI as an example, by the high 2bit weights of RNTI
6bit is obtained after multiple 3 times, by 6bit scramblings to the position of PC fixed bit set, remaining 16bit scramblings are to fixation in RNTI
The position of bit set.
It should be noted that the scrambling of position two of the position and PC fixed bit set to fixed bit sequence of sets
Sequence can be two inequality subsets of RNTI.There may also be the bit informations repeated for two scramble sequences, as long as meeting two
The union of a scramble sequence includes all bit informations of RNTI.
It should be noted that above-mentioned scrambling includes the direct exclusive or of RNTI, RNTI direct exclusive or superpositions end side day line options
Information, and generate scramble sequence using RNTI as random number seed.It illustrates RNTI and generates scrambling as random number seed
Sequence generates the scramble sequence that length is 300 bits using the RNTI of 16bit long as random number seed, and 300 bits are solid for PC
Determine the length of bit set and fixed bit set.
It should be noted that the network equipment can also carry RNTI by register initial value in the application.
Specifically, the inequality subset of RNTI is fixed ratio by base station by CRC, PC of control information bit to be encoded respectively
Spy's set, fixed bit set and register initial value carry.Figure 13 show an example, it is assumed that and the total length of RNTI is k,
Middle k>16.CRC sequences are arrived in preceding 16 scramblings of RNTI, and 17-21bit is carried by register initial value, residue (k-21) bit scramblings
To fixed bit set and PC fixed bit set.
Further include the following embodiments and the accompanying drawings it should be noted that carrying RNTI by register initial value.
Embodiment 1：RNTI is all carried by register initial value
Shown in Figure 14, RNTI length is p, register width p, can be encoded using RNTI as register initial value.
Embodiment 2：The parts RNTI are handled by specific function to be carried by register initial value
The partial bit of RNTI is carried out repetitive operation by the network equipment, repetition bits sequence is obtained, by repetition bits sequence
It is encoded as register initial value.
As shown in figure 15, present invention also provides a kind of communication equipments 400 that can transmit control information.The communication equipment
400 include：
Memory 402, for storing program；
Processor 403, the described program for executing memory storage, when described program is performed, the place
Reason device using terminal mark scrambles control information bit to be encoded, and the position for the control information bit being scrambled includes
The position of even-odd check PC fixed bit set；Control information bit after scrambling is adopted the network equipment by the processor
It is encoded with polarity Polar codes.
Transceiver 401, the bit sequence for obtaining coding are sent to other equipment.
It is connected by bus 404 between transceiver 401, memory 402, processor 403.
Optionally, the position of the control information bit being scrambled further comprises following at least one portion：Cycle
The position of the position and fixed bit set of redundancy check CRC sequences.
It should be noted that the method that processor executes is consistent with the above, repeat no more.
In the application, the network equipment scrambles control information bit to be encoded using RNTI, the control being scrambled
The position of information bit includes the position of PC fixed bit set, the position of CRC sequences and the position of fixed bit set, and
And the length of RNTI is greater than or equal to 16.The application is also described carries RNTI by the initial value of register.By above-mentioned
Mode, the network equipment support longer RNTI, can preferably support the access of extensive internet of things equipment.
Present invention also provides a kind of control information transferring method, this method can be applied to terminal, such as：In Fig. 3
MS1-MS2.Figure 16 is the flow chart of the control information transferring method, is as follows：
Step 510：Terminal receives the bit sequence that base station is sent, and the bit sequence is that base station uses Polar codes to control
Information bit processed obtains after being encoded.
It should be noted that for the decoding feature of Polar codes, the application also improves the flow before step 310, should
Flow chart is as shown in figure 18.Before blind examination, SC (English at least twice first is carried out to potential each positions DCI：
Successive Cancelling, Chinese：It is serial to offset) decoding, and record corresponding PM (English：Path Metric, in
Text：Path metric) value, the absolute value of PM is smaller, and it is higher to represent the correct probability of this paths decoding.Wherein, PM is to use MS
The decoding metric of the RNTI scrambling fixed bits of itself, PMinvTo use the RNTI of MS itself to negate translating for scrambling fixed bit
Code metric, PM0 are the decoding metric that fixed bit is scrambled using full 0, and PM1 is the decoding for scrambling fixed bit using complete 1
Metric is worth to new measurement according to these above-mentioned several decoding measurements, illustratively, metric=PM/ (PM0+PM1),
DCI potential sites have 44, and SC decodings three times are all done in the positions DCI potential to 44, obtain 44 potential positions DCI
44 measurements are ranked up by metric from small to large.
Step 520：The terminal determines the bit position of terminal iidentification and value, the terminal iidentification in the Polar codes
Bit position include even-odd check fixed bit set.
Optionally, the bit position of the terminal iidentification further comprises：The position of cyclic redundancy check (CRC) sequence, and
The position of fixed bit set.
Step 530：The terminal carries out the corresponding bit in the bit position determined using the terminal iidentification
Descrambling obtains the fixed bit set and the even-odd check fixed bit set.
Step 540：The terminal uses the fixed bit set and the even-odd check fixed bit set and verification
Equation, into row decoding, obtains information bit set to the bit sequence, and described information bit set includes Downlink Control Information
DCI and cyclic redundancy check (CRC) sequence.
Step 550：The terminal descrambles the CRC sequences in described information bit set using the terminal iidentification
And DCI does CRC check described in the terminal-pair, if CRC check passes through, obtains DCI.
It should be noted that controlling the mistake that step 510- steps 550 may be implemented in information carrying means 600 shown in Figure 17
Journey.Wherein, acquiring unit 610 is for executing step 510, and for executing step 520, Descrambling unit 630 is used for determination unit 620
The descrambling procedure in step 530 and step 550 is executed, verification unit 640 is used to execute the checking procedure in step 550, decoding
Unit 650 is for executing step 540.The control information carrying means is, for example, website or user terminal, which passes
Defeated device may be the application-specific integrated circuit (English for realizing correlation function：Application Specific Integrated
Circuit, referred to as：) or chip ASIC.
It should be noted that the decoding process in step 350 is similar with the process of blind examination PDCCH in existing LTE.Terminal
During PDCCH blind examinations, terminal carries out blind examination according to metric sequencing informations, to the potential positions DCI, until CRC check passes through.
Figure 19 is shown be ranked up after the practical decoding number of blind examination in the position of block error rate BLER=0.01 statistical
Cloth analogous diagram.As it can be seen that almost all of decoding is all detected in first time.The program reduces the average time of blind examination.
Optionally, the terminal iidentification is that the length of radio network temporary identifier RNTI, RNTI are greater than or equal to 16.
(include fixed bit set and PC for information bit set and fixed bit set during the decoding of Polar codes
Fixed bit set) use different operations.
Wherein, terminal determines the bit position of terminal iidentification and value in the Polar codes in step 320.By previously mentioned
It is found that the bit position of terminal iidentification includes a variety of realization methods in Polar codes, therefore, the decoding side of terminal also includes a variety of
Realization method.
Situation 1：All PC fixed bit set is arrived in scrambling to RNTI
Row decoding of going forward side by side is descrambled to PC fixed bits using the RNTI of base station distribution when terminal decodes, if decoding result passes through
CRC check, then it represents that find simultaneously correct decoding.
Situation 2：The parts RNTI (such as：It is 2 high) it scrambles and arrives PC fixed bit collection locations, the scrambling of RNTI remainders is arrived
Fixed bit collection location or CRC sequence locations
Row decoding of going forward side by side is descrambled to PC fixed bit set using high 2 of the RNTI of base station distribution when terminal decodes, and
And CRC sequences or fixed bit set are descrambled with the remainder of RNTI, if decoding result by CRC check,
PDCCH and correct decoding are found in expression.
Situation 3：RNTI is carried by register initial value
The RNTI distributed using base station when terminal decodes carries out register initial value to descramble row decoding of going forward side by side, if decoding result
Pass through CRC check, then it represents that find simultaneously correct decoding.
It should be noted that descrambling operation includes xor operation in the application, therefore the descrambling operation involved in the application
It is identical as the effect that Scrambling Operation reaches.
Communication equipment 400 as shown in figure 15.The communication equipment 400 includes：
Transceiver 401, the bit sequence for receiving base station transmission, the bit sequence are that base station is right using Polar codes
Control information bit obtains the bit sequence that coding obtains being sent to other equipment after being encoded.
Memory 402, for storing program；
Processor 403, the described program for executing memory storage, when described program is performed, the place
Reason device determines the bit position of terminal iidentification and value in the Polar codes, and the bit position of the terminal iidentification includes odd even school
Test fixed bit set；The processor carries out the corresponding bit in the bit position determined using the terminal iidentification
Descrambling obtains the fixed bit set and the even-odd check fixed bit set；The processor uses the fixed bit
Gather with the even-odd check fixed bit set and check equations to the bit sequence into row decoding, obtains information bit collection
It closes, described information bit set includes Downlink Control Information DCI and cyclic redundancy check (CRC) sequence；The processor uses institute
State terminal iidentification to the CRC sequences in described information bit set carry out descrambling and the terminal-pair described in DCI do the schools CRC
It tests, if CRC check passes through, obtains DCI.It is connected by bus 404 between transceiver 401, memory 402, processor 403.
Optionally, the bit position of the terminal iidentification further comprises：The position of cyclic redundancy check (CRC) sequence, and
The position of fixed bit set.
In the embodiment of the present application, by terminal before PDCCH blind examinations start, SC decodings are done to the potential positions DCI, are obtained every
The PM values of a potential site, and the PM values of each potential site are ranked up.By the above-mentioned means, terminal is in PDCCH blind examinations
The probability of correct decoding can be improved in the process, reduce the number of blind examination search.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or its arbitrary combination real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or
It partly generates according to the flow or function described in the embodiment of the present invention.The computer can be all-purpose computer, special meter
Calculation machine, computer network or other programmable devices.The computer instruction can be stored in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with
It is magnetic medium (for example, floppy disk, hard disk, tape), optical storage media (for example, DVD) etc..
Claims (10)
1. a kind of transmission method of control information, is applied in wireless network, including：
Network equipment using terminal mark scrambles control information bit to be encoded, the control information bit being scrambled
Position includes the position of even-odd check PC fixed bit set；
The network equipment encodes the control information bit after scrambling using polarity Polar codes, and coding is obtained
Bit sequence is sent to terminal.
2. the method as described in claim 1, which is characterized in that further wrap the position of the control information bit being scrambled
Include following at least one portion：The position of the position and fixed bit set of cyclic redundancy check (CRC) sequence.
3. method as claimed in claim 1 or 2, which is characterized in that the terminal iidentification is radio network temporary identifier RNTI,
The length of RNTI is greater than or equal to 16bits.
4. method as described in any one of claims 1-3, which is characterized in that the control information bit to be encoded includes information
Bit set, described information bit set include Downlink Control Information DCI and the CRC sequences, and the CRC sequences are by described
DCI encodes to obtain using CRC.
5. a kind of transmitting device of control information, is applied in wireless communication system, including：
Scrambling unit, using terminal mark scramble control information bit to be encoded, the control information bit being scrambled
Position include even-odd check PC fixed bit set position；
Coding unit encodes the control information bit after scrambling using polarity Polar codes；
The bit sequence that coding obtains is sent to terminal by transmission unit.
6. code device as claimed in claim 5, which is characterized in that the position of the control information bit being scrambled is into one
Step includes following at least one portion：The position of the position and fixed bit set of cyclic redundancy check (CRC) sequence.
7. such as code device described in claim 5 or 6, which is characterized in that the terminal iidentification is radio network temporary identifier
The length of RNTI, RNTI are greater than or equal to 16bits.
8. the code device as described in claim 5-7 is any, which is characterized in that the control information bit to be encoded includes
Information bit set, described information bit set include Downlink Control Information DCI and the CRC sequences, the CRC sequences by
The DCI encodes to obtain using CRC.
9. a kind of communication equipment, which is characterized in that including：
Memory, for storing program；
Processor, the described program for executing the memory storage, when described program is performed, the processor uses
Terminal iidentification scrambles control information bit to be encoded, and the position for the control information bit being scrambled includes even-odd check
The position of PC fixed bit set；Control information bit after scrambling is used polarity by the processor to the network equipment
Polar codes are encoded；
Transceiver, the bit sequence for obtaining coding are sent to other equipment.
10. communication equipment as claimed in claim 9, which is characterized in that it is described be scrambled control information bit position into
One step includes following at least one portion：The position of the position and fixed bit set of cyclic redundancy check (CRC) sequence.
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| CN201710008435.4A CN108282249B (en) | 2017-01-05 | 2017-01-05 | Control information transmission method and device |
| PCT/CN2018/071615 WO2018127139A1 (en) | 2017-01-05 | 2018-01-05 | Control information transmission method and apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830273A (en) * | 2018-08-07 | 2020-02-21 | 黎光洁 | Construction method of subsystem ID and networking application |
| CN111200442A (en) * | 2018-11-20 | 2020-05-26 | 华为技术有限公司 | Coding and decoding method, coding and decoding device and system |
| CN113785638A (en) * | 2019-04-30 | 2021-12-10 | 中兴通讯股份有限公司 | Wireless communication scheme with extended identifier |
| WO2021254422A1 (en) * | 2020-06-17 | 2021-12-23 | 华为技术有限公司 | Polar code encoding method and apparatus, and polar code decoding method and apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342774B (en) | 2017-04-25 | 2024-04-12 | 华为技术有限公司 | Encoding method, decoding method, device and equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368583A (en) * | 2012-04-11 | 2013-10-23 | 华为技术有限公司 | Polar code decoding method and decoding device |
| CN104170499A (en) * | 2012-03-14 | 2014-11-26 | 夏普株式会社 | Terminal device, base station device, and integrated circuit |
| CN105680883A (en) * | 2015-12-23 | 2016-06-15 | 华中科技大学 | Polarization code and multi-bit even parity check code cascaded error correction coding method |
| US20160182187A1 (en) * | 2013-08-20 | 2016-06-23 | Lg Electronics Inc. | Method for transmitting data by using polar coding in wireless access system |
| CN105790890A (en) * | 2016-04-19 | 2016-07-20 | 北京邮电大学 | Non-orthogonal multiple-access data transmission method and apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10292143B2 (en) * | 2015-04-09 | 2019-05-14 | Intel IP Corporation | Methods, apparatuses, and systems for enhancement of evolved physical downlink control channel for machine type communications |
-
2017
- 2017-01-05 CN CN201710008435.4A patent/CN108282249B/en active Active
-
2018
- 2018-01-05 WO PCT/CN2018/071615 patent/WO2018127139A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104170499A (en) * | 2012-03-14 | 2014-11-26 | 夏普株式会社 | Terminal device, base station device, and integrated circuit |
| CN103368583A (en) * | 2012-04-11 | 2013-10-23 | 华为技术有限公司 | Polar code decoding method and decoding device |
| US20160182187A1 (en) * | 2013-08-20 | 2016-06-23 | Lg Electronics Inc. | Method for transmitting data by using polar coding in wireless access system |
| CN105680883A (en) * | 2015-12-23 | 2016-06-15 | 华中科技大学 | Polarization code and multi-bit even parity check code cascaded error correction coding method |
| CN105790890A (en) * | 2016-04-19 | 2016-07-20 | 北京邮电大学 | Non-orthogonal multiple-access data transmission method and apparatus |
Non-Patent Citations (3)
| Title |
|---|
| HUAWEI, HISILICON: "Channel coding for control channels", 《3GPP TSG RAN WG1 MEETING #86》 * |
| INTEL: "Discussion on EMBB data channel coding for block lengths less than X", 《3GPP TSG RAN WG1 MEETING #87》 * |
| MEDIATEK INC.: "Comparison of coding candidates for eMBB data channel", 《3GPP TSG RAN WG1 MEETING #87》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830273A (en) * | 2018-08-07 | 2020-02-21 | 黎光洁 | Construction method of subsystem ID and networking application |
| CN110830273B (en) * | 2018-08-07 | 2022-09-23 | 黎光洁 | Construction method of subsystem ID and networking application |
| CN111200442A (en) * | 2018-11-20 | 2020-05-26 | 华为技术有限公司 | Coding and decoding method, coding and decoding device and system |
| CN113785638A (en) * | 2019-04-30 | 2021-12-10 | 中兴通讯股份有限公司 | Wireless communication scheme with extended identifier |
| WO2021254422A1 (en) * | 2020-06-17 | 2021-12-23 | 华为技术有限公司 | Polar code encoding method and apparatus, and polar code decoding method and apparatus |
| US12074713B2 (en) | 2020-06-17 | 2024-08-27 | Huawei Technologies Co., Ltd. | Polar code encoding method, polar code decoding method, and apparatuses thereof |
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| WO2018127139A1 (en) | 2018-07-12 |
| CN108282249B (en) | 2021-02-23 |
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