CN106341209A - Retransmission method and device used in wireless communication system - Google Patents
Retransmission method and device used in wireless communication system Download PDFInfo
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- CN106341209A CN106341209A CN201510406480.6A CN201510406480A CN106341209A CN 106341209 A CN106341209 A CN 106341209A CN 201510406480 A CN201510406480 A CN 201510406480A CN 106341209 A CN106341209 A CN 106341209A
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- information
- wireless signal
- wireless
- constellation point
- singal
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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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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a retransmission method and device used in wireless communication system. According to the embodiment, a first node transmits a first wireless signal and a second wireless signal in step one; the first wireless signal indicates the priori information of the second wireless signal; and the prior information comprises the statistical information of mapping constellation points. According to the invention, the performance of channel decoding can be effectively improved with less additionally occupied empty port resources.
Description
Technical field
The present invention relates to the transmission plan of the wireless signal in wireless communication system, more particularly to base
Transmission method and device in the wireless signal of digital modulation.
Background technology
Traditional wireless communication system based on digital modulation mode, such as 3gpp (3rd
Generation partner project, third generation cooperative partner program) cellular system and no
In line LAN communication system (such as wifi, wimax), each or multiple binary bits
(in transmitting pusher side) is modulated into a modulation symbol, that is, be mapped to planisphere
One of (constellation) constellation point (constellation point), then by
Send.Receiver judges the constellation point of its mapping according to the modulation symbol receiving, and then determines phase
The binary bits answered.
In radio communication, amc (adaptive modulation and coding, compile by self adaptation
Code modulation) and harq (hybrid automatic repeat request, mixed automatic retransfer
Request) it is widely adopted as two key technologies.Above-mentioned two technology enable transmitter root
Select suitable modulation system (i.e. planisphere) and channel coding rate according to quality of wireless channel,
Maximize power system capacity.
The challenge that amc and harq is faced is: transmitter cannot accurately obtain wireless channel
Possibly suitable modulation system and channel coding rate cannot be selected under conditions of quality.Cannot be accurate
The reason really obtain quality of wireless channel includes but is not limited to: the interference of burst, little yardstick declines
The quick change of the characteristic that falls, receiver delay of feedback etc..
Content of the invention
For the problems referred to above, the invention provides solution.It should be noted that not conflicting
In the case of, the feature in embodiment and embodiment in the primary nodal point of the application may apply to
In two nodes, vice versa.Further, in the case of not conflicting, embodiments herein and
Feature in embodiment can arbitrarily be mutually combined.
Inventor is found by research: although the binary bits that for statistically, information source produces are 1
It is identical with 0 ratio, for the bit bag of given size, binary bits therein are 1
It is probably different with 0 ratio.Accordingly, modulation symbol all constellation point in planisphere
Mapping is not equally distributed.Inventor passes through further study show that: the bit in bit bag
Fewer, the characteristic of the uneven distribution of bit status is more obvious.
According to the studies above, the invention discloses a kind of method of radio communication, wherein, including such as
Lower step:
- step a. primary nodal point sends the first wireless signal and second wireless singal.
Wherein, the first wireless signal indicates the prior information of second wireless singal.Described prior information
Including at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
In traditional wireless communication system, receiver typically can only be using the redundancy ratio in transmission signal
Special antagonism channel fading and interference etc. cause the factor of decoding error.And in said method, transmitter
The prior information of transmitting can be used for improving decoding performance by receiver.
Described statistical information is the information for describing multiple target samples, that is, to multiple target samples
General information.For second wireless singal, the first information is for describing multiple modulation symbols
The information of the feature of number corresponding constellation point, the second information is for describing multiple (channel encoders
Output) binary bits feature information, the 3rd information is for describing multiple being perforated
The information of the feature of (output of channel encoder) binary bits.
As an embodiment, the first wireless signal is believed in the physical layer for transmitting physical layer signaling
Transmit on road.As an embodiment, second wireless singal is in the thing for transmitting physical layer data
Reason layer channel.As an embodiment, the corresponding planisphere of second wireless singal is xqam,
Described x is 2 positive integer power, and the constellation point number that xqam planisphere includes is x time of 2
Power.
As an embodiment, the first wireless signal and second wireless singal are being spaced at the same time
Middle transmission.As a sub- embodiment of above-described embodiment, described time interval is 1 millisecond.
As an embodiment, compare in the second information instruction second wireless singal of second wireless singal
Percentage ratio shared by special 1.As a sub- embodiment, described percentage ratio be 50%, (50+d) %,
One of (50-d) %, more than (50+d) % or less than (50-d) % }, described d is less than 50
Positive rational number.
As an embodiment, compare in the second information instruction second wireless singal of second wireless singal
The quantized value of the percentage ratio shared by special 0.
As an embodiment, in the 3rd information instruction second wireless singal of second wireless singal by
The percentage ratio shared by bit 1 in the binary bits that are perforated of execution rate-matched.
Specifically, according to an aspect of the present invention it is characterised in that also comprising the steps:
- step b. primary nodal point receives the 3rd wireless signal, and the 3rd wireless signal instruction first is wireless
Whether signal is properly decoded.
As an embodiment, the 3rd wireless signal is believed in the physical layer for transmitting physical layer signaling
Transmit on road.As an embodiment, the 3rd wireless signal is in the thing for transmitting physical layer data
Reason layer channel.
Specifically, according to an aspect of the present invention it is characterised in that described step a also includes
Following steps:
- step a1. primary nodal point sends the 4th wireless signal.
Wherein, second wireless singal is formed by a bit bag modulation, and the 4th wireless signal includes n
Individual sub- wireless signal, described n sub- wireless signal is formed by n bit bag modulation respectively, described
N is positive integer.For each of described n sub- wireless signal wireless signal, first no
Prior information described in line signal designation.Second wireless singal same code corresponding with the 4th wireless signal
Block (code block).
In traditional radio communication, code block is the basic input of channel encoder and channel is translated
The basic output of code device.Taking lte (long term evolution, Long Term Evolution) as a example, one
Individual code block includes up to 6144 binary bits.The essence of above-mentioned aspect is: a code block is made
For the input of chnnel coding, the output of corresponding chnnel coding is divided into multiple bit bags, for
Each bit bag, the first wireless signal indicates described prior information.Above-mentioned aspect makes each institute
State prior information and indicate less bit bag, improve pointing accuracy, cost is increased first no
Interface-free resources shared by line signal.
Specifically, according to an aspect of the present invention it is characterised in that described step a also includes
Following steps:
The given operation to the execution of target bits bag of-step a0. primary nodal point, and will give through described
The bit bag determined operation and generate is modulated into the first wireless signal.
Wherein, described given operation includes at least chnnel coding in [chnnel coding, rate-matched],
Described target bits bag includes information bit and check bit, and described information bit is used for instruction second
The prior information of wireless signal, described check bit generates according to described information bit.
As an embodiment, described chnnel coding adopts turbo to encode.As an embodiment,
Described chnnel coding adopts convolutional encoding.As an embodiment, described chnnel coding adopts ldpc
(low density parity check code, low density parity check code) encodes.As
One embodiment, described check bit is that described information bit generates as the cyclic polynomial of input
The output of device.
Specifically, according to an aspect of the present invention it is characterised in that primary nodal point is base station,
Or primary nodal point is ue (user equipment, user equipment).
As an embodiment, primary nodal point is base station and the first wireless signal in pdsch
(physical downlink shared channel, Physical Downlink Shared Channel) is upper to be transmitted.
As an embodiment, primary nodal point is ue and the first wireless signal in pusch (physical
Uplink shared channel, Physical Uplink Shared Channel) upper transmission.
Specifically, according to an aspect of the present invention it is characterised in that also comprising the steps:
- step c. primary nodal point resends the prior information of second wireless singal.
Wherein, the 3rd wireless signal indicates the first wireless signal by erroneous interpretations.
As an embodiment, the first wireless signal adopts the first modulation coding mode, and second is wireless
It is to join respectively that signal adopts the second modulation coding mode, the first modulation system and the second modulation system
Put.
Specifically, according to an aspect of the present invention it is characterised in that the first information include following
At least one:
-. the index of main constellation point, 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 modulation symbol mapping in the association wireless signal of described prior information
The most constellation point of quantity, tail constellation point is that associating in wireless signal of described prior information maps
The minimum constellation point of number of modulation symbols.
As an embodiment, the first information of second wireless singal includes: second wireless singal
The index of main constellation point, and in second wireless singal, it is mapped to the modulation symbol and of main constellation point
The ratio of all modulated signals in two wireless signals.As a sub- embodiment, described ratio be m,
One of m+m1, m+m2, more than m+m3 }, wherein, m is 1/m, and m is second wireless singal
The number of mapped constellation in figure constellation point, m1, m2, m3 are just being no more than (m-1)/m respectively
Rational number.
The invention discloses a kind of method of radio communication, wherein, comprise the steps:
- step a. secondary nodal point receives the first wireless signal and second wireless singal.
Wherein, the first wireless signal indicates the prior information of second wireless singal.Described prior information
Including at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
Specifically, according to an aspect of the present invention it is characterised in that also comprising the steps:
- step b. secondary nodal point sends the 3rd wireless signal, and the 3rd wireless signal instruction first is wireless
Whether signal is properly decoded.
Specifically, according to an aspect of the present invention it is characterised in that described step a also includes
Following steps:
- step a1. secondary nodal point receives the 4th wireless signal.
Wherein, second wireless singal is formed by a bit bag modulation, and the 4th wireless signal includes n
Individual sub- wireless signal, described n sub- wireless signal is formed by n bit bag modulation respectively, described
N is positive integer.For each of described n sub- wireless signal wireless signal, first no
Prior information described in line signal designation.Second wireless singal and the 4th wireless signal are included respectively by same
The partial modulation symbol that one code block generates.
Specifically, according to an aspect of the present invention it is characterised in that described step a also includes
Following steps:
- step a0. secondary nodal point obtains mesh to the first wireless signal execution decoded operation receiving
Mark bit bag.
Wherein, described target bits bag includes information bit and check bit, and described information bit is used
In the prior information of instruction second wireless singal, described check bit is given birth to according to described information bit
Become.
As an embodiment, described decoded operation is included in { bit compensates, channel decoding } extremely
Few channel decoding.
Specifically, according to an aspect of the present invention it is characterised in that secondary nodal point is ue, or
Person's secondary nodal point is base station.
Specifically, according to an aspect of the present invention it is characterised in that described step a also includes
Following steps:
- step a2. secondary nodal point is according to prior information decoding second nothing of described second wireless singal
Line signal.
Specifically, according to an aspect of the present invention it is characterised in that also comprising the steps:
- step c. secondary nodal point receives the prior information of second wireless singal again.
Wherein, the 3rd wireless signal indicates the first wireless signal by erroneous interpretations.
Specifically, according to an aspect of the present invention it is characterised in that the first information include following
At least one:
-. the index of main constellation point, 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 modulation symbol mapping in the association wireless signal of described prior information
The most constellation point of quantity, tail constellation point is that associating in wireless signal of described prior information maps
The minimum constellation point of number of modulation symbols.
The invention discloses a kind of equipment for radio communication, wherein, including such as lower module:
First module: for sending the first wireless signal and second wireless singal.
Wherein, the first wireless signal indicates the prior information of second wireless singal.Described prior information
Including at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
As an embodiment, the said equipment is characterised by, the first module is additionally operable to: sends the
Four wireless signals.Wherein, second wireless singal is formed by a bit bag modulation, the 4th wireless communication
Number include n sub- wireless signal, described n sub- wireless signal modulated by n bit bag respectively and
Become, described n is positive integer.For each of described n sub- wireless signal wireless signal,
First wireless signal indicates described prior information.Second wireless singal and the 4th wireless signal wrap respectively
Include the partial modulation symbol being generated by same code block.
As an embodiment, the said equipment is characterised by, the first information include following at least it
One:
-. the index of main constellation point, 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 modulation symbol mapping in the association wireless signal of described prior information
The most constellation point of quantity, tail constellation point is that associating in wireless signal of described prior information maps
The minimum constellation point of number of modulation symbols.
As an embodiment, the said equipment is base station equipment.
As an embodiment, the said equipment is ue.
The invention discloses a kind of equipment for radio communication, wherein, including such as lower module:
First module: for receiving the first wireless signal and second wireless singal.
Wherein, the first wireless signal indicates the prior information of second wireless singal.Described prior information
Including at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
As an embodiment, the said equipment is characterised by, the first module is additionally operable to: according to institute
State the prior information decoding second wireless singal of second wireless singal.
Compare existing public technology, the present invention has a following technical advantage:
-. prior information can improve decoding performance, and then improves spectrum efficiency and power system capacity
-. compare purely by (chnnel coding introduces) redundant bit, prior information takies
Less interface-free resources.
Brief description
By reading the detailed description that non-limiting example is made made with reference to the following drawings, this
The other features, objects and advantages of invention will become more apparent:
The flow chart that Fig. 1 shows transmission of wireless signals according to an embodiment of the invention；
Fig. 2 shows the prior information retransmitting second wireless singal according to an embodiment of the invention
Flow chart；
Fig. 3 shows that a code block according to an embodiment of the invention is mapped to second wireless singal
Schematic diagram with the 4th wireless signal；
Fig. 4 shows the schematic diagram according to prior information decoding according to an embodiment of the invention；
Fig. 5 show main constellation point in 16qam planisphere according to an embodiment of the invention and
The schematic diagram of tail constellation point；
Fig. 6 shows the structure of the processing meanss in primary nodal point according to an embodiment of the invention
Block diagram；
Fig. 7 shows the structure of the processing meanss in secondary nodal point according to an embodiment of the invention
Block diagram；
Specific embodiment
Below in conjunction with accompanying drawing, technical scheme is described in further detail, needs explanation
It is that, in the case of not conflicting, the feature in embodiments herein and embodiment can be arbitrarily mutual
Combination.
Embodiment 1
The flow chart that embodiment 1 illustrates transmission of wireless signals, as shown in Figure 1.In accompanying drawing 1,
Step in square frame t1 is optional step.
ForPrimary nodal point n1, step s11 sends the first wireless signal and second wireless singal.
ForSecondary nodal point n2, step s21 receives the first wireless signal and second wireless singal.
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.Described elder generation
The information of testing includes at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
As the sub- embodiment 1 of embodiment 1, primary nodal point is base station, and secondary nodal point is ue, base
The n1 that stands is the maintenance base station of the Serving cell of ue n2,.
As the sub- embodiment 2 of embodiment 1, primary nodal point is ue, and secondary nodal point is base station, base
The n2 that stands is the maintenance base station of the Serving cell of ue n1.
As the sub- embodiment 3 of embodiment 1, primary nodal point and secondary nodal point are to support wifi respectively
User equipment and ap (access point, access point).
As the sub- embodiment 4 of embodiment 1, second wireless singal is on pdsch or pusch
Transmission, (i.e. one code block is after chnnel coding for the corresponding code block of second wireless singal
Bit is modulated into second wireless singal).
As the sub- embodiment 5 of embodiment 1, primary nodal point sends the 4th no in step s12
Line signal；Secondary nodal point receives the 4th wireless signal in step s22, basis in step s23
First wireless signal decodes the 4th wireless signal.Wherein, second wireless singal is adjusted by a bit bag
System forms, and the 4th wireless signal includes n sub- wireless signal, and described n sub- wireless signal is respectively
Formed by n bit bag modulation, described n is positive integer.For in described n sub- wireless signal
Each sub- wireless signal, the first wireless signal indicates described prior information.Second wireless singal
Include respectively by same code block (through chnnel coding and rate-matched) life with the 4th wireless signal
The partial modulation symbol becoming.
As the sub- embodiment 6 of embodiment 1, the first wireless signal and second wireless singal adopt
Channel coding method is { convolutional code, turbo code, ldpc (low density parity check respectively
One of code, low density parity check code }.
As the sub- embodiment 7 of embodiment 1, described prior information includes the first information.Second no
The first information of line signal includes at least one of:
-. the index of main constellation point, and in second wireless singal, it is mapped to the modulation symbol of main constellation point
Number quantity instruction
-. the index of tail constellation point, and in second wireless singal, it is mapped to the modulation symbol of tail constellation point
Number quantity instruction
-. it is mapped to the quantity instruction of the modulation symbol of each constellation point in second wireless singal.
Wherein, main constellation point is the most constellation of the number of modulation symbols mapping in second wireless singal
Point, tail constellation point is the minimum constellation point of the number of modulation symbols mapping in second wireless singal.
As the sub- embodiment 8 of embodiment 1, described prior information includes the first information.Second no
The first information of line signal includes at least one of:
-. the index of main constellation point group, and in second wireless singal, it is mapped to the tune of main constellation point group
The quantity instruction of symbol processed
-. the index of tail constellation point group, and the tune being mapped to tail constellation point group in second wireless singal
The quantity instruction of symbol processed
-. it is mapped to the quantity instruction of the modulation symbol of each constellation point group in second wireless singal.
Wherein, the constellation point of the modulation constellation in figure of second wireless singal is divided into positive integer star
Seat point group, each constellation point group includes positive integer constellation shop.Main constellation point group is second wireless
The most constellation point group of the number of modulation symbols of mapping in signal, tail constellation point group is the second wireless communication
The minimum constellation point group of the number of modulation symbols of mapping in number.
Above-mentioned sub- embodiment 7 is a special case of sub- embodiment 8, only includes 1 in constellation point group
Individual constellation point.Sub- embodiment 8 is more suitable for the more planisphere of constellation point quantity (such as 256qam),
Especially when transmitter instruction is mapped to the quantity instruction of the modulation symbol of each constellation point group
- interface-free resources shared by the first wireless signal can be reduced.
Embodiment 2
The flow chart that embodiment 2 illustrates the prior information retransmitting second wireless singal, as accompanying drawing 2 institute
Show.
ForPrimary nodal point n3, step s31 sends the first wireless signal and second wireless singal,
The 3rd wireless signal is received in step s32.If the 3rd wireless signal indicates the first wireless signal
Fail to be correctly received, step s33 resends the prior information of second wireless singal.
ForSecondary nodal point n4, step s41 receives the first wireless signal and second wireless singal.
The 3rd wireless signal is sent in step s42.If the 3rd wireless signal indicates the first wireless signal
Fail to be correctly received, step s43 receives the prior information of second wireless singal again.
In embodiment 2, the first wireless signal indicates the prior information of second wireless singal.Described elder generation
The information of testing includes at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
3rd wireless signal indicates whether the first wireless signal is properly decoded
As the sub- embodiment 1 of embodiment 2, the first wireless signal is for transmitting physical layer data
Physical layer channel on transmit.
As the sub- embodiment 2 of embodiment 2, mcs (the modulation and of the first wireless signal
Coding status) and the mcs of second wireless singal configured by base station respectively, described base
Station is primary nodal point n3 or secondary nodal point n4.
Embodiment 3
Embodiment 3 illustrates one of lte system code block and is mapped to second wireless singal and the 4th no
The schematic diagram of line signal, as shown in Figure 3.In primary nodal point in the corresponding present invention of embodiment 3
Method.
In embodiment 3, a given code block first passes around chnnel coding (i.e. as channel encoder
Input), then to bit execution rate-matched (punching) after coding, finally it is modulated into modulation
Symbol is simultaneously mapped on physical time-frequency resource.
Obtain bit to be made up of n+1 bit bag, described n+1 bit bag institute is right after rate-matched
The modulation symbol answered is respectively mapped on running time-frequency resource # { 0,1 ..., n }, and described 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,
The modulation symbol being mapped on running time-frequency resource # { 1 ..., n } forms the 4th wireless signal in the present invention.
As the sub- embodiment 1 of embodiment 3, described 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 same height
Frame.
Embodiment 4
Embodiment 4 illustrates the schematic diagram according to prior information decoding, as shown in Figure 4.Embodiment
The method in secondary nodal point in the 4 corresponding present invention.
In embodiment 4, secondary nodal point executes letter according to the prior information of receipt signal to receipt signal
Road decodes.Described receipt signal is the second wireless singal in the present invention, or described receipt signal
Including the second wireless singal in the present invention and the 4th wireless signal.Described prior information includes mapping
The statistical information of constellation point.
In embodiment 4, secondary nodal point determines reception according to the prior information of receipt signal and receipt signal
Given modulation symbol (corresponding transmission modulation symbol) in signal is mapped to the probability of target constellation point.
Described target constellation point is one or more constellation point of receipt signal mapped constellation in figure.The not people having the same aspiration and interest
The target constellation point of symbol (needing to calculate probability) processed is probably different.
As the sub- embodiment 1 of embodiment 4, secondary nodal point is according to the elder generation of receipt signal and receipt signal
The information of testing determines that all modulation symbols in receipt signal are mapped to the probability of target constellation point.Or the
Two nodes determine the partial modulation symbol in receipt signal according to the prior information of receipt signal and receipt signal
Number it is mapped to the probability of target constellation point, determine that residual modulated signal is mapped to mesh according only to receipt signal
The probability of mark constellation point.
As the sub- embodiment 2 of embodiment 4, for given modulation symbol, the priori letter of receipt signal
Cease described given modulation symbol be mapped to target constellation point probability mapping relations with described given tune
The order that the decoded device of symbol processed calls is unrelated.
As the sub- embodiment 3 of embodiment 4, for given modulation symbol, the priori letter of receipt signal
Cease described given modulation symbol be mapped to target constellation point probability mapping relations with described given tune
The order that the decoded device of symbol processed calls is relevant.
As the sub- embodiment of the sub- embodiment 2 of above-described embodiment 4, described prior information includes receiving
It is mapped to the quantity instruction of the modulation symbol of each constellation point in signal.Given modulation symbol mapping
Probability to target constellation point is p1*p2.Wherein p1 is true according only to receipt signal according to traditional scheme
Fixed given modulation symbol is mapped to the probability (being normal distribution for Gaussian channel) of target constellation point,
P2 is multiplied by j3 equal to j1 divided by j2.Wherein, j1 is the tune that receipt signal is mapped to target constellation point
The quantity of symbol processed；J2 is the quantity of all modulation symbols in receipt signal；J3 is receipt signal mapping
Constellation point quantity in planisphere.
As the sub- embodiment of the sub- embodiment 3 of above-described embodiment 4, described prior information includes receiving
It is mapped to the quantity instruction of the modulation symbol of each constellation point in signal.Given modulation symbol mapping
Probability to target constellation point is p1*p3.Wherein p1 is true according only to receipt signal according to traditional scheme
Fixed given modulation symbol is mapped to the probability of target constellation point, and p3 is multiplied by j3 equal to j4 divided by j5.
In which it is assumed that (before calling given modulation symbol) modulation symbol of having been called by channel decoder
Under the conditions of judgement is accurate, map in the modulation symbol not called by channel decoder in receipt signal
Quantity to the modulation symbol of target constellation point is j4；J5 is that in receipt signal, all not decoded devices are adjusted
The quantity of modulation symbol, j3 is the constellation point quantity of receipt signal mapped constellation in figure.
Whether convolutional code, turbo code, or ldpc code, the most basic computing of its channel decoding
It is directed to calculate, according to receipt signal, the probability that modulation symbol therein is mapped to target constellation point.And
The essence of embodiment 4 is: secondary nodal point not only utilizes receipt signal, and utilizes its prior information meter
Calculate the probability that modulation symbol is mapped to target constellation point.Improve decoding performance.
Embodiment 5
Embodiment 5 illustrates the schematic diagram of main constellation point in 16qam planisphere and tail constellation point, such as
Shown in accompanying drawing 5.
In embodiment 5, the second wireless singal in the present invention adopts the planisphere of 16qam, wherein
Main constellation point and tail constellation point are as shown in Figure 5.
Embodiment 6
Embodiment 6 illustrates the structured flowchart of the processing meanss in primary nodal point, as shown in Figure 6.
In accompanying drawing 6, processing meanss 100 are mainly by sending module 101, receiver module 102 and sending module
103 compositions, wherein in dotted line frame t2, the module of mark is optional module.
Sending module 101 is used for sending the first wireless signal and second wireless singal.Receiver module 102
For receiving the 3rd wireless signal, the 3rd wireless signal indicates whether the first wireless signal is correctly translated
Code.Sending module 103 is used for (when the 3rd wireless signal indicates the first wireless signal by erroneous interpretations
When) resend the prior information of second wireless singal.
In embodiment 6, the first wireless signal indicates the prior information of second wireless singal.Described elder generation
The information of testing includes at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
As the sub- embodiment 1 of embodiment 6, second wireless singal and the 4th wireless signal are same
Send in physical layer channel.
As the sub- embodiment 2 of embodiment 6, the first wireless signal and second wireless singal are same
Send in the physical layer channel of type.
Embodiment 7
Embodiment 7 illustrates the structured flowchart of the processing meanss in secondary nodal point, as shown in Figure 7.
In accompanying drawing 7, processing meanss 200 are mainly by receiver module 201, sending module 202 and receiver module
203 compositions, wherein in dotted line frame t3, the module of mark is optional module.
Receiver module 201 is used for receiving the first wireless signal and second wireless singal.Sending module 202
For sending the 3rd wireless signal, the 3rd wireless signal indicates whether the first wireless signal is correctly translated
Code.Receiver module 203 is used for again receiving the prior information of second wireless singal.
In embodiment 7, the first wireless signal indicates the prior information of second wireless singal.Described elder generation
The information of testing includes at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
As the sub- embodiment 1 of embodiment 7, described prior information includes the 3rd information, and second is wireless
3rd information of signal indicates more ratio in the binary bits being perforated in second wireless singal
Paricular value (1 or 0).Receiver module 201 is additionally operable to all compensate the bit being perforated for the 3rd
The bit value of information instruction, then carries out the channel decoding for second wireless singal.
As the sub- embodiment 2 of embodiment 7, described prior information includes the second information, and second is wireless
3rd information of signal indicates ratio p4 of the binary bits for 1 in second wireless singal.Receive
Module 201 is additionally operable to, in channel decoding, determine the given tune in second wireless singal according to p4
Symbol processed is mapped to the probability of target constellation point.
One of ordinary skill in the art will appreciate that all or part of step in said method is permissible
Instruct related hardware by program to complete, described program can be stored in computer-readable storage medium
In matter, such as read only memory, hard disk or CD etc..Optionally, above-described embodiment whole or
Part steps can also be realized using one or more integrated circuit.Accordingly, above-mentioned enforcement
Each modular unit in example, can be realized it is also possible to by software function module using example, in hardware
Form is realized, and the application is not limited to the combination of the software and hardware of any particular form.In the present invention
Ue or terminal include but is not limited to mobile phone, panel computer, notebook, card of surfing Internet, automobile
Deng Wireless Telecom Equipment.Base station in the present invention includes but is not limited to macrocell base stations, microcellulor base
Stand, Home eNodeB, the Wireless Telecom Equipment such as relay base station.Embodiments of the invention are mainly based upon
Lte system, but the scope of application of the present invention also including but not limited to arbitrarily supports numeral
The wireless communication system (such as 3g, wifi, wimax, following 5g communication system etc.) of modulation.
The above, only presently preferred embodiments of the present invention, it is not intended to limit the present invention's
Protection domain.All any modifications within the spirit and principles in the present invention, made, equivalent,
Improve etc., should be included within the scope of the present invention.
Claims (17)
1. a kind of method of radio communication, wherein, comprises the steps:
- step a. primary nodal point sends the first wireless signal and second wireless singal.
Wherein, the first wireless signal indicates the prior information of second wireless singal.Described prior information
Including at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
2. method according to claim 1 is it is characterised in that also comprise the steps:
- step b. primary nodal point receives the 3rd wireless signal, and the 3rd wireless signal instruction first is wireless
Whether signal is properly decoded.
3. method according to claim 1 it is characterised in that described step a also include as
Lower step:
- step a1. primary nodal point sends the 4th wireless signal.
Wherein, second wireless singal is formed by a bit bag modulation, and the 4th wireless signal includes n
Individual sub- wireless signal, described n sub- wireless signal is formed by n bit bag modulation respectively, described
N is positive integer.For each of described n sub- wireless signal wireless signal, first no
Prior information described in line signal designation.Second wireless singal and the 4th wireless signal are included respectively by same
The partial modulation symbol that one code block generates.
4., according to claim 1, the method described in 2 is it is characterised in that described step a is also wrapped
Include following steps:
The given operation to the execution of target bits bag of-step a0. primary nodal point, and will give through described
The bit bag determined operation and generate is modulated into the first wireless signal.
Wherein, described given operation includes at least chnnel coding in [chnnel coding, rate-matched],
Described target bits bag includes information bit and check bit, and described information bit is used for instruction second
The prior information of wireless signal, described check bit generates according to described information bit.
5. method according to claim 1 is it is characterised in that primary nodal point is base station, or
Person's primary nodal point is ue.
6. method according to claim 2 is it is characterised in that also comprise the steps:
- step c. primary nodal point resends the prior information of second wireless singal.
Wherein, the 3rd wireless signal indicates the first wireless signal by erroneous interpretations.
7. the method according to claim 1-6 it is characterised in that the first information include following
At least one:
-. the index of main constellation point, 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 modulation symbol mapping in the association wireless signal of described prior information
The most constellation point of quantity, tail constellation point is that associating in wireless signal of described prior information maps
The minimum constellation point of number of modulation symbols.
8. a kind of method of radio communication, wherein, comprises the steps:
- step a. secondary nodal point receives the first wireless signal and second wireless singal.
Wherein, the first wireless signal indicates the prior information of second wireless singal.Described prior information
Including at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
9. method according to claim 8 is it is characterised in that also comprise the steps:
- step b. secondary nodal point sends the 3rd wireless signal, and the 3rd wireless signal instruction first is wireless
Whether signal is properly decoded.
10. method according to claim 8 is it is characterised in that described step a also includes
Following steps:
- step a1. secondary nodal point receives the 4th wireless signal.
Wherein, second wireless singal is formed by a bit bag modulation, and the 4th wireless signal includes n
Individual sub- wireless signal, described n sub- wireless signal is formed by n bit bag modulation respectively, described
N is positive integer.For each of described n sub- wireless signal wireless signal, first no
Prior information described in line signal designation.Second wireless singal and the 4th wireless signal are included respectively by same
The partial modulation symbol that one code block generates.
11. according to Claim 8, and the method described in 9 is it is characterised in that described step a is also wrapped
Include following steps:
- step a0. secondary nodal point obtains mesh to the first wireless signal execution decoded operation receiving
Mark bit bag.
Wherein, described target bits bag includes information bit and check bit, and described information bit is used
In the prior information of instruction second wireless singal, described check bit is given birth to according to described information bit
Become.
12. methods according to claim 8 it is characterised in that secondary nodal point is ue, or
Person's secondary nodal point is base station.
13. methods according to claim 8 are it is characterised in that described step a also includes
Following steps:
- step a2. secondary nodal point is according to prior information decoding second nothing of described second wireless singal
Line signal.
14. methods according to claim 9 are it is characterised in that also comprise the steps:
- step c. secondary nodal point receives the prior information of second wireless singal again.
Wherein, the 3rd wireless signal indicates the first wireless signal by erroneous interpretations.
15. according to Claim 8 the method described in -14 it is characterised in that the first information include with
At least one lower:
-. the index of main constellation point, 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 modulation symbol mapping in the association wireless signal of described prior information
The most constellation point of quantity, tail constellation point is that associating in wireless signal of described prior information maps
The minimum constellation point of number of modulation symbols.
A kind of 16. equipment for radio communication, wherein, including such as lower module:
First module: for sending the first wireless signal and second wireless singal.
Wherein, the first wireless signal indicates the prior information of second wireless singal.Described prior information
Including at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
A kind of 17. equipment for radio communication, wherein, including such as lower module:
First module: for receiving the first wireless signal and second wireless singal.
Wherein, the first wireless signal indicates the prior information of second wireless singal.Described prior information
Including at least one of:
-. the first information: the statistical information of mapped constellation points
-. the second information: the statistical information of binary bits
-. the 3rd information: the statistical information of the binary bits being perforated.
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| CN106341209B (en) | 2019-09-10 |
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