CN106341209B - A kind of repeating method and device in wireless communication system - Google Patents
A kind of repeating method and device in wireless communication system Download PDFInfo
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- CN106341209B CN106341209B CN201510406480.6A CN201510406480A CN106341209B CN 106341209 B CN106341209 B CN 106341209B CN 201510406480 A CN201510406480 A CN 201510406480A CN 106341209 B CN106341209 B CN 106341209B
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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
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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Abstract
The invention discloses a kind of repeating methods and device in wireless communication system.As one embodiment, first node sends the first wireless signal and second wireless singal in step 1.Wherein, the prior information of the first wireless signal instruction second wireless singal.The prior information includes the statistical information of mapped constellation points.Under the premise of additionally occupying less interface-free resources, the present invention can effectively improve the performance of channel decoding.
Description
Technical field
The present invention relates to the transmission plans of the wireless signal in wireless communication system, more particularly to based on digital modulation
The transmission method and device of wireless signal.
Background technique
Traditional wireless communication system based on digital modulation mode, such as 3GPP (3rd Generation Partner
Project, third generation cooperative partner program) in cellular system and wireless lan communication system (such as Wifi, Wimax), often
One or more binary bits (in transmitter side) is modulated into a modulation symbol, that is, is mapped to planisphere
(Constellation) constellation point (Constellation Point) in, is then sent.Receiver is according to reception
To modulation symbol judge the constellation point of its mapping, and then determine corresponding binary bits.
In wireless communication, AMC (Adaptive Modulation and Coding, adaptive coding and modulating) and HARQ
(Hybrid Automatic Repeat reQuest, hybrid automatic repeat-request) is widely adopted as two key technologies.
Above-mentioned two technologies enable transmitter to select suitable modulation system (i.e. planisphere) and letter according to quality of wireless channel
Road code rate maximizes power system capacity.
The challenge that AMC and HARQ are faced is: transmitter is under conditions of accurately can not obtain quality of wireless channel
Possibly suitable modulation system and channel coding rate can not be selected.The reason of quality of wireless channel can not accurately be obtained includes
(but being not limited to): the interference of burst, the quick variation of multipath fading characteristic, receiver delay of feedback etc..
Summary of the invention
In view of the above-mentioned problems, the present invention provides solutions.It should be noted that in the absence of conflict, this Shen
The feature in the embodiment and embodiment in first node please can be applied in second node, and vice versa.Further,
In the absence of conflict, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Inventors discovered through research that: although the ratio that the binary bits that information source generates for statistically are 1 and 0 is phase
With, for giving the bit packet of size, the ratio that binary bits therein are 1 and 0 may be different.Correspondingly, adjusting
Symbol processed mapping of all constellation points into planisphere is also not equally distributed.Inventor through further research, it has been found that: ratio
Bit in spy's packet is fewer, and the characteristic of the uneven distribution of bit status is more obvious.
According to the studies above, the invention discloses a kind of methods of wireless communication, wherein includes the following steps:
Step A. first node sends the first wireless signal and second wireless singal.
Wherein, the prior information of the first wireless signal instruction second wireless singal.The prior information include it is following at least
One of:
- the first information: the statistical information of mapped constellation points
The second information of-: the statistical information of binary bits
- third information: the statistical information for the binary bits being perforated.
In traditional wireless communication system, receiver can only generally be declined using the redundant bit confrontation channel in transmission signal
The factor for causing decoding error such as fall and interfere.And in the above method, the prior information of transmitter transmitting can be received machine use
In raising decoding performance.
The statistical information is the information for describing multiple target samples, i.e., information general to multiple target samples.
For second wireless singal, the first information is the information for describing the feature of the corresponding constellation point of multiple modulation symbols,
Second information is the information for describing the feature of multiple (output of channel encoder) binary bits, and third information is to be used for
The information of the feature of multiple (output of channel encoder) binary bits being perforated is described.
As one embodiment, the first wireless signal transmits in the physical layer channel for be used for transmission physical layer signaling.Make
For one embodiment, second wireless singal is transmitted in the physical layer channel for be used for transmission physical layer data.Implement as one
Example, the corresponding planisphere of second wireless singal is xQAM, and the x is 2 positive integer power, the constellation for including in xQAM planisphere
Point number is 2 x power.
As one embodiment, the first wireless signal and second wireless singal are transmitted in interval at the same time.As
One sub- embodiment of above-described embodiment, the time interval are 1 millisecond.
As one embodiment, the second information of second wireless singal is indicated in second wireless singal hundred shared by bit 1
Divide ratio.As a sub- embodiment, the percentage is that { 50%, (50+d) %, (50-d) % are greater than (50+d) % or small
In (50-d) % } in one, the d is less than 50 positive rational number.
As one embodiment, the second information of second wireless singal is indicated in second wireless singal hundred shared by bit 0
Divide the quantized value of ratio.
As one embodiment, the third information of second wireless singal is indicated in second wireless singal due to executing rate
Match and percentage shared by bit 1 in the binary bits that are perforated.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step B. first node receives third wireless signal, and whether third wireless signal indicates the first wireless signal by just
Really decoding.
As one embodiment, third wireless signal transmits in the physical layer channel for be used for transmission physical layer signaling.Make
For one embodiment, third wireless signal transmits in the physical layer channel for be used for transmission physical layer data.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. first node sends the 4th wireless signal.
Wherein, second wireless singal is modulated by a bit packet, and the 4th wireless signal includes N number of sub- wireless signal,
N number of sub- wireless signal is modulated by N number of bit packet respectively, and the N is positive integer.For N number of sub- wireless signal
Each of sub- wireless signal, the first wireless signal indicate the prior information.Second wireless singal and the 4th wireless signal
The corresponding same code block (Code Block).
In traditional wireless communication, a code block be channel encoder basic input and channel decoder it is substantially defeated
Out.By taking LTE (Long Term Evolution, long term evolution) as an example, a code block includes up to 6144 binary bits.
The essence of above-mentioned aspect is: input of the code block as channel coding, the output of corresponding channel coding is divided into multiple
Bit packet, for each bit packet, the first wireless signal indicates the prior information.Above-mentioned aspect makes each described priori
Information indicates lesser bit packet, improves pointing accuracy, cost is increased the occupied interface-free resources of the first wireless signal.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A0. first node, which executes target bits packet, gives operation, and will be generated by the given operation
Bit packet is modulated into the first wireless signal.
Wherein, the given operation includes at least channel coding in [channel coding, rate-matched], the target bits
Packet includes information bit and check bit, and the information bit is used to indicate the prior information of second wireless singal, the verification
Bit is generated according to the information bit.
As one embodiment, the channel coding is encoded using Turbo.As one embodiment, the channel coding
Using convolutional encoding.As one embodiment, the channel coding uses LDPC (Low Density Parity Check
Code, low density parity check code) coding.As one embodiment, the check bit is the information bit as input
Cyclic polynomial generator output.
Specifically, according to an aspect of the present invention, which is characterized in that first node is base station or first node is
UE (User Equipment, user equipment).
As one embodiment, first node is base station and the first wireless signal in PDSCH (Physical Downlink
Shared Channel, Physical Downlink Shared Channel) on transmit.As one embodiment, first node is UE and first is wireless
Signal transmits on PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel).
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
The prior information of step C. first node retransmission second wireless singal.
Wherein, third wireless signal indicates that the first wireless signal is decoded by mistake.
As one embodiment, the first wireless signal uses the first modulation coding scheme, and second wireless singal uses second
Modulation coding scheme, the first modulation system and the second modulation system are configurable respectively.
Specifically, according to an aspect of the present invention, which is characterized in that the first information includes at least one of:
The index of the main constellation point of-, and it is mapped to the quantity instruction of the modulation symbol of main constellation point
The index of-tail constellation point, and it is mapped to the quantity instruction of the modulation symbol of tail constellation point.
Wherein, main constellation point is the star that the number of modulation symbols that maps is most in the association wireless signal of the prior information
Seat point, tail constellation point are the least constellation points of number of modulation symbols that map in the association wireless signal of the prior information.
As one embodiment, the first information of second wireless singal includes: the rope of the main constellation point of second wireless singal
Draw, and is mapped to the ratio of all modulated signals in the modulation symbol and second wireless singal of main constellation point in second wireless singal
Value.As a sub- embodiment, the ratio is one in { m, m+m1, m+m2 are greater than m+m3 }, wherein m is 1/M, and M is
The number of constellation point, m1, m2, m3 are no more than the positive rational number of (M-1)/M respectively in second wireless singal mapped constellation figure.
The invention discloses a kind of methods of wireless communication, wherein includes the following steps:
Step A. second node receives the first wireless signal and second wireless singal.
Wherein, the prior information of the first wireless signal instruction second wireless singal.The prior information include it is following at least
One of:
- the first information: the statistical information of mapped constellation points
The second information of-: the statistical information of binary bits
- third information: the statistical information for the binary bits being perforated.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step B. second node sends third wireless signal, and whether third wireless signal indicates the first wireless signal by just
Really decoding.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. second node receives the 4th wireless signal.
Wherein, second wireless singal is modulated by a bit packet, and the 4th wireless signal includes N number of sub- wireless signal,
N number of sub- wireless signal is modulated by N number of bit packet respectively, and the N is positive integer.For N number of sub- wireless signal
Each of sub- wireless signal, the first wireless signal indicate the prior information.Second wireless singal and the 4th wireless signal
Respectively include the partial modulation symbol generated by the same code block.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A0. second node executes decoded operation to the first wireless signal received and obtains target bits packet.
Wherein, the target bits packet includes information bit and check bit, and the information bit is used to indicate the second nothing
The prior information of line signal, the check bit are generated according to the information bit.
As one embodiment, the decoded operation includes at least channel decoding in { bit compensation, channel decoding }.
Specifically, according to an aspect of the present invention, which is characterized in that second node is UE or second node is base
It stands.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A2. second node decodes second wireless singal according to the prior information of the second wireless singal.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step C. second node receives the prior information of second wireless singal again.
Wherein, third wireless signal indicates that the first wireless signal is decoded by mistake.
Specifically, according to an aspect of the present invention, which is characterized in that the first information includes at least one of:
The index of the main constellation point of-, and it is mapped to the quantity instruction of the modulation symbol of main constellation point
The index of-tail constellation point, and it is mapped to the quantity instruction of the modulation symbol of tail constellation point.
Wherein, main constellation point is the star that the number of modulation symbols that maps is most in the association wireless signal of the prior information
Seat point, tail constellation point are the least constellation points of number of modulation symbols that map in the association wireless signal of the prior information.
The invention discloses a kind of equipment for wireless communication, wherein including following module:
First module: for sending the first wireless signal and second wireless singal.
Wherein, the prior information of the first wireless signal instruction second wireless singal.The prior information include it is following at least
One of:
- the first information: the statistical information of mapped constellation points
The second information of-: the statistical information of binary bits
- third information: the statistical information for the binary bits being perforated.
As one embodiment, above equipment is characterized in that, the first module is also used to: sending the 4th wireless signal.Its
In, second wireless singal is modulated by a bit packet, and the 4th wireless signal includes N number of sub- wireless signal, N number of sub- nothing
Line signal is modulated by N number of bit packet respectively, and the N is positive integer.For each of N number of sub- wireless signal
Wireless signal, the first wireless signal indicate the prior information.Second wireless singal and the 4th wireless signal are respectively included by same
The partial modulation symbol that one code block generates.
As one embodiment, above equipment is characterized in that the first information includes at least one of:
The index of the main constellation point of-, and it is mapped to the quantity instruction of the modulation symbol of main constellation point
The index of-tail constellation point, and it is mapped to the quantity instruction of the modulation symbol of tail constellation point.
Wherein, main constellation point is the star that the number of modulation symbols that maps is most in the association wireless signal of the prior information
Seat point, tail constellation point are the least constellation points of number of modulation symbols that map in the association wireless signal of the prior information.
As one embodiment, above equipment is base station equipment.
As one embodiment, above equipment is UE.
The invention discloses a kind of equipment for wireless communication, wherein including following module:
First module: for receiving the first wireless signal and second wireless singal.
Wherein, the prior information of the first wireless signal instruction second wireless singal.The prior information include it is following at least
One of:
- the first information: the statistical information of mapped constellation points
The second information of-: the statistical information of binary bits
- third information: the statistical information for the binary bits being perforated.
As one embodiment, above equipment is characterized in that, the first module is also used to: according to the second wireless singal
Prior information decode second wireless singal.
Compared to existing public technology, the present invention has following technical advantage:
- prior information can improve decoding performance, and then improve spectrum efficiency and power system capacity
For-compared to pure by (channel coding introduces) redundant bit, prior information occupies less interface-free resources.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the flow chart of wireless signal transmission according to an embodiment of the invention；
Fig. 2 shows the flow charts of the prior information according to an embodiment of the invention for retransmitting second wireless singal；
Fig. 3 shows a code block according to an embodiment of the invention and is mapped to second wireless singal and the 4th wirelessly
The schematic diagram of signal；
Fig. 4 shows the schematic diagram according to an embodiment of the invention decoded according to prior information；
Fig. 5 shows main constellation point in 16QAM planisphere according to an embodiment of the invention and tail constellation point
Schematic diagram；
Fig. 6 shows the structural block diagram of the processing unit in first node according to an embodiment of the invention；
Fig. 7 shows the structural block diagram of the processing unit in second node according to an embodiment of the invention；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 illustrates the flow chart of wireless signal transmission, as shown in Fig. 1.Step in attached drawing 1, in box T1
It is optional step.
ForFirst node N1, the first wireless signal and second wireless singal are sent in step s 11.
ForSecond node N2, the first wireless signal and second wireless singal are received in the step s 21.In step S23
Second wireless singal is decoded according to the first wireless signal.
In embodiment 1, the first wireless signal indicates the prior information of second wireless singal.The prior information includes following
At least one:
- the first information: the statistical information of mapped constellation points
The second information of-: the statistical information of binary bits
- third information: the statistical information for the binary bits being perforated.
As the sub- embodiment 1 of embodiment 1, first node is base station, and second node is UE, and base station N1 is the clothes of UE N2
The maintenance base station for cell of being engaged in,.
As the sub- embodiment 2 of embodiment 1, first node is UE, and second node is base station, and base station N2 is the clothes of UE N1
The maintenance base station for cell of being engaged in.
As the sub- embodiment 3 of embodiment 1, first node and second node are the user equipment and AP for supporting Wifi respectively
(Access Point, access point).
As the sub- embodiment 4 of embodiment 1, second wireless singal is transmitted on PDSCH or PUSCH, the second wireless communication
A number corresponding code block (bit of i.e. one code block after channel coding is modulated into second wireless singal).
As the sub- embodiment 5 of embodiment 1, first node sends the 4th wireless signal in step s 12；Second node exists
The 4th wireless signal is received in step S22, and the 4th wireless signal is decoded according to the first wireless signal in step S23.Wherein,
Two wireless signals are modulated by a bit packet, and the 4th wireless signal includes N number of sub- wireless signal, N number of sub- wireless communication
It number is modulated respectively by N number of bit packet, the N is positive integer.It is wireless for each of described N number of sub- wireless signal
Signal, the first wireless signal indicate the prior information.Second wireless singal and the 4th wireless signal are respectively included by same
The partial modulation symbol that code block (by channel coding and rate-matched) generates.
As the sub- embodiment 6 of embodiment 1, the channel coding method point of the first wireless signal and second wireless singal use
Be not convolutional code, Turbo code, LDPC (Low Density Parity Check Code, low density parity check code } in
One.
As the sub- embodiment 7 of embodiment 1, the prior information includes the first information.First letter of second wireless singal
Breath includes at least one of:
The quantity instruction of the modulation symbol of main constellation point is mapped in the index and second wireless singal of the main constellation point of-
The quantity instruction of the modulation symbol of tail constellation point is mapped in the index and second wireless singal of-tail constellation point
The quantity instruction of the modulation symbol of each constellation point is mapped in-second wireless singal.
Wherein, main constellation point is the most constellation point of the number of modulation symbols that maps in second wireless singal, tail constellation point
It is the least constellation point of number of modulation symbols mapped in second wireless singal.
As the sub- embodiment 8 of embodiment 1, the prior information includes the first information.First letter of second wireless singal
Breath includes at least one of:
The quantity of the modulation symbol of main constellation point group is mapped in the index and second wireless singal of the main constellation point group of-
Instruction
The quantity of the modulation symbol of tail constellation point group is mapped in the index and second wireless singal of-tail constellation point group
Instruction
The quantity instruction of the modulation symbol of each constellation point group is mapped in-second wireless singal.
Wherein, the constellation point in the modulation constellation of second wireless singal is divided into positive integer constellation point group, each
It include positive integer constellation shop in constellation point group.Main constellation point group is that the number of modulation symbols that maps in second wireless singal is most
Constellation point group, tail constellation point group is the least constellation point group of number of modulation symbols mapped in second wireless singal.
Above-mentioned sub- embodiment 7 is a special case of sub- embodiment 8, i.e., 1 constellation point is only included in constellation point group.Son is implemented
Example 8 is more suitable for the more planispheres of constellation point quantity (such as 256QAM), especially when transmitter instruction is mapped to each star
When the quantity instruction of the modulation symbol of seat point group-the occupied interface-free resources of the first wireless signal can be reduced.
Embodiment 2
Embodiment 2 illustrates the flow chart for retransmitting the prior information of second wireless singal, as shown in Fig. 2.
ForFirst node N3, the first wireless signal and second wireless singal are sent in step S31, in step s 32
Receive third wireless signal.If third wireless signal indicates that the first wireless signal fails to be correctly received, the weight in step S33
The new prior information for sending second wireless singal.
ForSecond node N4, the first wireless signal and second wireless singal are received in step S41.In step S42
Send third wireless signal.If third wireless signal indicates that the first wireless signal fails to be correctly received, the weight in step S43
The new prior information for receiving second wireless singal.
In embodiment 2, the first wireless signal indicates the prior information of second wireless singal.The prior information includes following
At least one:
- the first information: the statistical information of mapped constellation points
The second information of-: the statistical information of binary bits
- third information: the statistical information for the binary bits being perforated.
Third wireless signal indicates whether the first wireless signal is properly decoded
As the sub- embodiment 1 of embodiment 2, the first wireless signal is in the physical layer channel for being used for transmission physical layer data
Transmission.
As the sub- embodiment 2 of embodiment 2, MCS (the Modulation and Coding of the first wireless signal
Status) and the MCS of second wireless singal is configured by base station respectively, and the base station is first node N3 or second node
N4。
Embodiment 3
Embodiment 3 illustrates a code block in LTE system and is mapped to showing for second wireless singal and the 4th wireless signal
It is intended to, as shown in Fig. 3.The method in first node in the corresponding present invention of embodiment 3.
In embodiment 3, a given code block is first passed around channel coding (i.e. as the input of channel encoder), then right
Bit after coding executes rate-matched (punching), is finally modulated into modulation symbol and is mapped on physical time-frequency resource.
It obtains bit after rate-matched to be made of N+1 bit packet, modulation symbol corresponding to the N+1 bit packet
It is respectively mapped on running time-frequency resource # { 0,1 ..., N }, the N is positive integer.
The modulation symbol being wherein mapped on running time-frequency resource #0 forms the second wireless singal in the present invention, is mapped to time-frequency
Modulation symbol on resource # { 1 ..., N } forms the 4th wireless signal in the present invention.
As the sub- embodiment 1 of embodiment 3, the running time-frequency resource includes positive integer PRB (Physical Resource
Block, Physical Resource Block).
As the sub- embodiment 2 of embodiment 3, running time-frequency resource # { 0,1 ..., N } is located at the same subframe.
Embodiment 4
Embodiment 4 illustrates the schematic diagram decoded according to prior information, as shown in Fig. 4.In the corresponding present invention of embodiment 4
Second node in method.
In embodiment 4, second node executes channel decoding to signal is received according to the prior information for receiving signal.It is described to connect
Collecting mail number is second wireless singal in the present invention or the signal that receives includes second wireless singal in the present invention and the
Four wireless signals.The prior information includes the statistical information of mapped constellation points.
In embodiment 4, second node is determined according to the prior information for receiving signal and reception signal receives giving in signal
Determine modulation symbol (corresponding transmission modulation symbol) and is mapped to the probability of target constellation point.The target constellation point is to receive signal
One or more constellation point in mapped constellation figure.The target constellation point of different modulating symbol (needing to calculate probability) may be
Different.
As the sub- embodiment 1 of embodiment 4, second node connects according to the prior information determination for receiving signal and reception signal
All modulation symbols in the collection of letters number are mapped to the probability of target constellation point.Or second node is believed according to signal and reception is received
Number prior information determine that the partial modulation symbol received in signal is mapped to the probability of target constellation point, according only to receiving signal
Determine that residual modulated signal is mapped to the probability of target constellation point.
As the sub- embodiment 2 of embodiment 4, for giving modulation symbol, the prior information for receiving signal gives to described
The mapping relations that modulation symbol is mapped to the probability of target constellation point are decoded the order of device calling with the given modulation symbol
It is unrelated.
As the sub- embodiment 3 of embodiment 4, for giving modulation symbol, the prior information for receiving signal gives to described
The mapping relations that modulation symbol is mapped to the probability of target constellation point are decoded the order of device calling with the given modulation symbol
It is related.
The sub- embodiment of sub- embodiment 2 as above-described embodiment 4, the prior information include receiving to be mapped in signal
The quantity of the modulation symbol of each constellation point indicates.The probability that given modulation symbol is mapped to target constellation point is p1*p2.Its
Middle p1 be according to traditional scheme according only to receive signal determine given modulation symbol be mapped to target constellation point probability (for
Gaussian channel is normal distribution), p2 is equal to j1 divided by j2 multiplied by j3.Wherein, j1 is to receive signal to be mapped to target constellation point
The quantity of modulation symbol；J2 is the quantity for receiving all modulation symbols in signal；J3 is the star received in signal mapped constellation figure
Seat point quantity.
The sub- embodiment of sub- embodiment 3 as above-described embodiment 4, the prior information include receiving to be mapped in signal
The quantity of the modulation symbol of each constellation point indicates.The probability that given modulation symbol is mapped to target constellation point is p1*p3.Its
Middle p1 is the probability that the given modulation symbol determined according to traditional scheme according only to reception signal is mapped to target constellation point, p3 etc.
In j4 divided by j5 multiplied by j3.In which it is assumed that the modulation symbol called by channel decoder (before calling given modulation symbol)
Judgement be accurately under the conditions of, receive signal in not by channel decoder call modulation symbol in be mapped to target constellation point
The quantity of modulation symbol be j4；J5 is the quantity for receiving all modulation symbols for not being decoded device calling in signal, and j3 is to connect
Constellation point quantity in collection of letters mapped constellation figure.
Whether the most basic operation of convolutional code, Turbo code or LDPC code, channel decoding is directed to basis
It receives signal and calculates the probability that modulation symbol therein is mapped to target constellation point.And the essence of embodiment 4 is: second node is not
Light calculates the probability that modulation symbol is mapped to target constellation point using reception signal, and using its prior information.It improves and translates
Code performance.
Embodiment 5
Embodiment 5 illustrates the schematic diagram of main constellation point and tail constellation point in 16QAM planisphere, as shown in Fig. 5.
In embodiment 5, the second wireless singal in the present invention uses the planisphere of 16QAM, wherein main constellation point and tail star
Seat point is as shown in Fig. 5.
Embodiment 6
Embodiment 6 illustrates the structural block diagram of the processing unit in first node, as shown in Fig. 6.In attached drawing 6, processing
Device 100 is mainly made of sending module 101, receiving module 102 and sending module 103, the mould wherein identified in dotted line frame T2
Block is optional module.
Sending module 101 is for sending the first wireless signal and second wireless singal.Receiving module 102 is for receiving third
Wireless signal, third wireless signal indicate whether the first wireless signal is properly decoded.Sending module 103 for (when third without
The first wireless signal of line signal designation by mistake decode when) retransmit second wireless singal prior information.
In embodiment 6, the first wireless signal indicates the prior information of second wireless singal.The prior information includes following
At least one:
- the first information: the statistical information of mapped constellation points
The second information of-: the statistical information of binary bits
- third information: the statistical information for the binary bits being perforated.
As the sub- embodiment 1 of embodiment 6, second wireless singal and the 4th wireless signal are in the same physical layer channel
It sends.
As the sub- embodiment 2 of embodiment 6, the first wireless signal and second wireless singal are in same type of physical layer
It is sent in channel.
Embodiment 7
Embodiment 7 illustrates the structural block diagram of the processing unit in second node, as shown in Fig. 7.In attached drawing 7, processing
Device 200 is mainly made of receiving module 201, sending module 202 and receiving module 203, the mould wherein identified in dotted line frame T3
Block is optional module.
Receiving module 201 is for receiving the first wireless signal and second wireless singal.Sending module 202 is for sending third
Wireless signal, third wireless signal indicate whether the first wireless signal is properly decoded.Receiving module 203 for receiving the again
The prior information of two wireless signals.
In embodiment 7, the first wireless signal indicates the prior information of second wireless singal.The prior information includes following
At least one:
- the first information: the statistical information of mapped constellation points
The second information of-: the statistical information of binary bits
- third information: the statistical information for the binary bits being perforated.
As the sub- embodiment 1 of embodiment 7, the prior information includes third information, the third letter of second wireless singal
More bit value (1 or 0) in the binary bits being perforated in breath instruction second wireless singal.Receiving module 201 is also used
In the bit being perforated all to be compensated to the bit value for the instruction of third information, the channel for second wireless singal is then carried out
Decoding.
As the sub- embodiment 2 of embodiment 7, the prior information includes the second information, and the third of second wireless singal is believed
The ratio p4 for the binary bits for being 1 in breath instruction second wireless singal.Receiving module 201 is also used in channel decoding, root
Determine that the given modulation symbol in second wireless singal is mapped to the probability of target constellation point according to p4.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be referred to by program
Related hardware is enabled to complete, described program can store in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, one or more integrated circuit can be used also to realize in all or part of the steps of above-described embodiment.Phase
It answers, each modular unit in above-described embodiment, can be realized using example, in hardware, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.UE or terminal in the present invention include but not
It is limited to mobile phone, tablet computer, notebook, card of surfing Internet, the wireless telecom equipments such as automobile.Base station in the present invention includes but is not limited to
Macrocell base stations, microcell base station, Home eNodeB, the wireless telecom equipments such as relay base station.The embodiment of the present invention is mainly base
In LTE system, however the scope of application of the invention further includes the wireless communication system that (but being not limited to) arbitrarily supports digital modulation
It unites (such as 3G, Wifi, Wimax, following 5G communication system etc.).
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in protection of the invention
Within the scope of.
Claims (17)
1. a kind of method of wireless communication, wherein include the following steps:
Step A. first node sends the first wireless signal and second wireless singal；
Wherein, the prior information of the first wireless signal instruction second wireless singal；The prior information includes at least one of:
- the first information: the statistical information of mapped constellation points；
The second information of-: the statistical information of binary bits；
- third information: the statistical information for the binary bits being perforated.
2. the method according to claim 1, wherein further including following steps:
Step B. first node receives third wireless signal, and third wireless signal indicates whether the first wireless signal is correctly translated
Code.
3. the method according to claim 1, wherein the step A further includes following steps:
Step A1. first node sends the 4th wireless signal；
Wherein, second wireless singal is modulated by a bit packet, and the 4th wireless signal includes N number of sub- wireless signal, the N
A sub- wireless signal is modulated by N number of bit packet respectively, and the N is positive integer；For every in N number of sub- wireless signal
One sub- wireless signal, the first wireless signal indicate the prior information；Second wireless singal and the 4th wireless signal wrap respectively
Include the partial modulation symbol generated by the same code block.
4. the method according to claim 1, wherein the step A further includes following steps:
Step A0. first node executes given operation, and the bit that will be generated by the given operation to target bits packet
Packet is modulated into the first wireless signal；
Wherein, the given operation includes at least channel coding in [channel coding, rate-matched], the target bits packet
Information bit and check bit are included, the information bit is used to indicate the prior information of second wireless singal, the check bit
It is generated according to the information bit.
5. the method according to claim 1, wherein first node is base station or first node is UE.
6. according to the method described in claim 2, it is characterized in that, further including following steps:
The prior information of step C. first node retransmission second wireless singal；
Wherein, third wireless signal indicates that the first wireless signal is decoded by mistake.
7. according to claim 1 to method described in any claim in 6, which is characterized in that the first information include with down toward
It is one of few:
The index of the main constellation point of-, and it is mapped to the quantity instruction of the modulation symbol of main constellation point；
The index of-tail constellation point, and it is mapped to the quantity instruction of the modulation symbol of tail constellation point；
Wherein, main constellation point is the constellation that the number of modulation symbols that maps is most in the association wireless signal of the prior information
Point, tail constellation point are the least constellation points of number of modulation symbols that map in the association wireless signal of the prior information.
8. a kind of method of wireless communication, wherein include the following steps:
Step A. second node receives the first wireless signal and second wireless singal；
Wherein, the prior information of the first wireless signal instruction second wireless singal；The prior information includes at least one of:
- the first information: the statistical information of mapped constellation points；
The second information of-: the statistical information of binary bits；
- third information: the statistical information for the binary bits being perforated.
9. according to the method described in claim 8, it is characterized in that, further including following steps:
Step B. second node sends third wireless signal, and third wireless signal indicates whether the first wireless signal is correctly translated
Code.
10. according to the method described in claim 8, it is characterized in that, the step A further includes following steps:
Step A1. second node receives the 4th wireless signal；
Wherein, second wireless singal is modulated by a bit packet, and the 4th wireless signal includes N number of sub- wireless signal, the N
A sub- wireless signal is modulated by N number of bit packet respectively, and the N is positive integer；For every in N number of sub- wireless signal
One sub- wireless signal, the first wireless signal indicate the prior information；Second wireless singal and the 4th wireless signal wrap respectively
Include the partial modulation symbol generated by the same code block.
11. according to the method described in claim 8, it is characterized in that, the step A further includes following steps:
Step A0. second node executes decoded operation to the first wireless signal received and obtains target bits packet；
Wherein, the target bits packet includes information bit and check bit, and the information bit is used to indicate the second wireless communication
Number prior information, the check bit generates according to the information bit.
12. according to the method described in claim 8, it is characterized in that, second node is UE or second node is base station.
13. according to the method described in claim 8, it is characterized in that, the step A further includes following steps:
Step A2. second node decodes second wireless singal according to the prior information of the second wireless singal.
14. according to the method described in claim 9, it is characterized in that, further including following steps:
Step C. second node receives the prior information of second wireless singal again；
Wherein, third wireless signal indicates that the first wireless signal is decoded by mistake.
15. the method according to any claim in claim 8 to 14, which is characterized in that the first information includes following
At least one:
The index of the main constellation point of-, and it is mapped to the quantity instruction of the modulation symbol of main constellation point；
The index of-tail constellation point, and it is mapped to the quantity instruction of the modulation symbol of tail constellation point；
Wherein, main constellation point is the constellation that the number of modulation symbols that maps is most in the association wireless signal of the prior information
Point, tail constellation point are the least constellation points of number of modulation symbols that map in the association wireless signal of the prior information.
16. a kind of equipment for wireless communication, wherein including following module:
First module: for sending the first wireless signal and second wireless singal；
Wherein, the prior information of the first wireless signal instruction second wireless singal；The prior information includes at least one of:
- the first information: the statistical information of mapped constellation points；
The second information of-: the statistical information of binary bits；
- third information: the statistical information for the binary bits being perforated.
17. a kind of equipment for wireless communication, wherein including following module:
First module: for receiving the first wireless signal and second wireless singal；
Wherein, the prior information of the first wireless signal instruction second wireless singal；The prior information includes at least one of:
- the first information: the statistical information of mapped constellation points；
The second information of-: the statistical information of binary bits；
- third information: the statistical information for the binary bits being perforated.
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| CN109194597B (en) * | 2018-10-26 | 2021-01-22 | 电子科技大学 | Enhanced spatial modulation implementation method based on LabVIEW |
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| US7730385B2 (en) * | 2005-11-30 | 2010-06-01 | Motorola, Inc. | Method for decoding a received control channel message with a priori information |
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