CN106375070A - Retransmission method and device for mobile communication system - Google Patents
Retransmission method and device for mobile communication system Download PDFInfo
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- CN106375070A CN106375070A CN201510444232.0A CN201510444232A CN106375070A CN 106375070 A CN106375070 A CN 106375070A CN 201510444232 A CN201510444232 A CN 201510444232A CN 106375070 A CN106375070 A CN 106375070A
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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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
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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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a retransmission method and a device for a mobile communication system. In one embodiment, a first node transmits K pieces of priori statistical information in a first step, the K pieces of priori statistical information aim at K bit blocks respectively, K is a positive integer, the priori statistical information comprises at least one piece of second information: the average value of first parameters and the variance of the first parameters, the first parameters are lengths of bit strings in a first state, the first state and a second state are states possibly indicated by a binary bit, the bit string is formed by continuous binary bits with the same state, and states of adjacent bits in the bit string change. On the premise of additionally occupying few air interface resources, the channel decoding performance can be effectively improved.
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 constellation point symbol, that is, be mapped to planisphere
One of (constellation) constellation point (constellation point), then by
Send.Receiver is according to the constellation point of its mapping of the constellation point symbol decision receiving, and then determines
Corresponding binary bits.
In order to improve the robustness of transmission of wireless signals, the widely used chnnel coding of transmitter introduces superfluous
Remaining bit.Conventional chnnel coding includes convolutional code, turbo code, ldpc (low density
Parity check code, low density parity check code) code.Accordingly, receiver is using letter
Road decoding recovers systematic bits.Conventional channel decoding includes viterbi decoding, log_map
Decoding etc..
In order to improve efficiency of transmission further, amc (adaptive modulation and coding,
Adaptive coding and modulating) and harq (hybrid automatic repeat request, mixing
HARQ) it is widely adopted in wireless communications as two key technologies.Above-mentioned two
Technology enables transmitter to select suitable modulation system (i.e. constellation according to quality of wireless channel
Figure) and channel coding rate, 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: in existing channel decoding, receiver is according to the nothing receiving
Line signal determines prior information, then enters row decoding using described prior information.The standard of prior information
Whether true can largely affect decoding performance.Inventor passes through further study show that: though
So statistically for the binary bits that produce of information source be 1 and 0 ratio be identical, for giving
The bit bag of sizing, binary bits therein be 1 and 0 ratio be probably different.
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 k priori statistics.
Wherein, described k priori statistics are respectively directed to k bit block, and described k is just whole
Number, described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: in { meansigma methodss of the first parameter, the variance of the first parameter } extremely
One of few, the first parameter is the length of the Bit String for first state
-. the 3rd information: in { meansigma methodss of the second parameter, the variance of the second parameter } extremely
One of few, the second parameter is the length of the Bit String for the second state
-. the 4th information: in { meansigma methodss of the 3rd parameter, the variance of the 3rd parameter } extremely
One of few, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described
Bit String is made up of the continuous binary bits of state identical, described Bit String adjacent bit
State change.
The essence of said method is: receiver directly receives k priori statistics.Compared to connecing
For receipts machine estimates prior information according to receipt signal, the correctness of above-mentioned priori statistics is more
High.Described Bit String includes positive integer state identical binary bits.
As an embodiment, described k is 1.As an embodiment, described k is more than 1.Make
For an embodiment, described bit block includes positive integer bit.As an embodiment, first
State is 1, and the second state is 0.As an embodiment, first state is -1, the second state
It is 1.
Specifically, according to an aspect of the present invention it is characterised in that described k bit block belongs to
In same code block.
As an embodiment, described k is more than 1.The essence of above-described embodiment is: a code block
It is divided into multiple bit blocks, transmitter is directed to each bit block and sends described priori statistics letter
Breath, improves pointing accuracy.
In the present invention, input bit needed for the first encoding of encoder for the described code block is formed.
As an embodiment, a code block includes up to 6144 binary bits.
Specifically, according to an aspect of the present invention it is characterised in that described step a also includes
Following steps:
- step a2. primary nodal point carries out the first coding to described k bit block and obtains the first bit
Block.
- step a3. primary nodal point sends the first wireless signal, and the first wireless signal is by target bits
Bit modulation in block forms, and described target bits block includes the bit in the first bit block.
As an embodiment, described modulation includes constellation point.As a sub- embodiment,
Described constellation point adopts x-qam planisphere, and described x is 2 positive integer power.
As an embodiment, described target bits block is the first bit block and other bit blocks are carried out
The bit block obtaining after intertexture.As an embodiment, the first coding is convolutional encoding.As one
Individual embodiment, the first coding is all turbo coding.As an embodiment, the first coding is ldpc
Coding.As an embodiment, the first coding includes rate adaptation operating.
Specifically, according to an aspect of the present invention it is characterised in that also comprising the steps:
- step b. primary nodal point receives second wireless singal, and second wireless singal indicates described k
Whether priori statistics are properly decoded.
Second wireless singal is substantially the harq_ack for described priori statistics.
As an embodiment, described priori statistics are in the physics for transmitting physical layer data
Layer channel.As an embodiment, second wireless singal is for transmitting physical layer signaling
Physical layer channel on transmit.As an embodiment, second wireless singal is for transmitting physical
Transmit in the physical layer channel of layer data.
As an embodiment, described priori statistics and the first bit block are for transmitting physical
Transmit in the physical layer channel of layer data, described priori statistics adopt a mcs
(modulation and coding status, modulation coding mode), the first bit block adopts
2nd mcs, a mcs compare the 2nd mcs possess lower bler (block error rate,
Block Error Rate).Above-described embodiment guarantees that described priori statistics possess lower bler.
Specifically, according to an aspect of the present invention it is characterised in that described k priori counts
Information includes k group information bit and 1 group of check bit, described k group information bit and respectively and institute
State k priori statistics to correspond.
As an embodiment, described check bit be crc (cyclic redundancy check,
CRC) bit.As an embodiment, described check bit include 16 or
24 bits of person.As an embodiment, described check bit is that described k group information bit is made
Output for the cyclic polynomial maker of input.
As an embodiment, described information bit and described check bit are after the second coding
Bit is sent by primary nodal point.As a sub- embodiment, the second coding is convolutional code or turbo
Code.
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 to support lte (long term equipment, length
Phase evolution) standard base station, described priori statistics are in pdsch (physical downlink
Shared channel, Physical Downlink Shared Channel) upper transmission.
As an embodiment, primary nodal point is the ue supporting lte, and described priori statistics exist
Transmit on pusch.
Specifically, according to an aspect of the present invention it is characterised in that also comprising the steps:
- step c. primary nodal point resends described k priori statistics.
Wherein, second wireless singal indicates described k priori statistics by erroneous interpretations.
The invention discloses a kind of method of radio communication, wherein, comprise the steps:
- step a. secondary nodal point receives k priori statistics.
Wherein, described k priori statistics are respectively directed to k bit block, and described k is just whole
Number, described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: in { meansigma methodss of the first parameter, the variance of the first parameter } extremely
One of few, the first parameter is the length of the Bit String for first state
-. the 3rd information: in { meansigma methodss of the second parameter, the variance of the second parameter } extremely
One of few, the second parameter is the length of the Bit String for the second state
-. the 4th information: in { meansigma methodss of the 3rd parameter, the variance of the 3rd parameter } extremely
One of few, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described
Bit String is made up of the continuous binary bits of state identical, described Bit String adjacent bit
State change.
Specifically, according to an aspect of the present invention it is characterised in that described k bit block belongs to
In same code block.
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 receives the first wireless signal, and the first wireless signal is by target bits
Bit modulation in block forms, and described target bits block includes the bit in the first bit block.
- step a3. secondary nodal point carries out the first decoding to the first wireless signal receiving and obtains institute
State k bit block.
As an embodiment, in described step a2, secondary nodal point solves from the bit block receiving
Interweave and obtain the first bit block.As an embodiment, the first decoding is viterbi decoding.Make
For an embodiment, the first decoding is log_map decoding.
Specifically, according to an aspect of the present invention it is characterised in that also comprising the steps:
- step b. secondary nodal point sends second wireless singal, and second wireless singal indicates described k
Whether priori statistics are properly decoded.
Specifically, according to an aspect of the present invention it is characterised in that described k priori counts
Information includes k group information bit and 1 group of check bit, described k group information bit and respectively and institute
State k priori statistics to correspond.
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.
As an embodiment, described ue is the data card supporting wifi standard.As a reality
Apply example, described ue is the portable set supporting lte standard.As an embodiment, described
Ue is vehicular communication equipment.
Specifically, according to an aspect of the present invention it is characterised in that described step a also includes
Following steps:
- step a30. secondary nodal point is according to described k priori statistics execution first decoding.
Specifically, according to an aspect of the present invention it is characterised in that also comprising the steps:
- step c. secondary nodal point receives described k priori statistics again.
Wherein, second wireless singal indicates described k priori statistics by erroneous interpretations.
The invention discloses a kind of equipment for radio communication, wherein, including such as lower module:
First module: for sending k priori statistics.
Wherein, described k priori statistics are respectively directed to k bit block, and described k is just whole
Number, described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: in { meansigma methodss of the first parameter, the variance of the first parameter } extremely
One of few, the first parameter is the length of the Bit String for first state
-. the 3rd information: in { meansigma methodss of the second parameter, the variance of the second parameter } extremely
One of few, the second parameter is the length of the Bit String for the second state
-. the 4th information: in { meansigma methodss of the 3rd parameter, the variance of the 3rd parameter } extremely
One of few, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described
Bit String is made up of the continuous binary bits of state identical, described Bit String adjacent bit
State change.
The invention discloses a kind of equipment for radio communication, wherein, including such as lower module:
First module: for receiving k priori statistics.
Wherein, described k priori statistics are respectively directed to k bit block, and described k is just whole
Number, described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: in { meansigma methodss of the first parameter, the variance of the first parameter } extremely
One of few, the first parameter is the length of the Bit String for first state
-. the 3rd information: in { meansigma methodss of the second parameter, the variance of the second parameter } extremely
One of few, the second parameter is the length of the Bit String for the second state
-. the 4th information: in { meansigma methodss of the 3rd parameter, the variance of the 3rd parameter } extremely
One of few, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described
Bit String is made up of the continuous binary bits of state identical, described Bit String adjacent bit
State change.
Compare existing public technology, the present invention has a following technical advantage:
-. improve decoding performance using priori statistics, and then improve spectrum efficiency and system appearance
Amount
-. compare purely by (chnnel coding introduces) redundant bit, priori statistics
Take less interface-free resources
-. utilize the physical layer channel for transmitting physical layer data to transmit priori statistics, keep away
Exempt to take the resource of control channel.Additionally, receiver is directed to priori statistics sends harq_ack
Can ensure that priori statistics are properly received.
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:
Fig. 1 shows the flow chart being wirelessly transferred according to an embodiment of the invention；
Fig. 2 shows the flow chart retransmitting priori statistics according to an embodiment of the invention；
Fig. 3 shows the signal to priori statistics coding according to an embodiment of the invention
Figure；
Fig. 4 shows the schematic diagram of a bit block according to an embodiment of the invention；
Fig. 5 shows the signal according to priori statistics decoding according to an embodiment of the invention
Figure；
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
Embodiment 1 illustrates the flow chart being wirelessly transferred, as shown in Figure 1.In accompanying drawing 1, square frame
Step in t1 is optional step.
ForPrimary nodal point n1, step s11 sends k priori statistics.ForSecond Node n2, step s21 receives k priori statistics.
In embodiment 1, first state and the second state are that binary bits may indicate that respectively
State, described k priori statistics are respectively directed to k bit block, and described k is positive integer,
Described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: in { meansigma methodss of the first parameter, the variance of the first parameter } extremely
One of few, the first parameter is the length of the Bit String for first state
-. the 3rd information: in { meansigma methodss of the second parameter, the variance of the second parameter } extremely
One of few, the second parameter is the length of the Bit String for the second state
-. the 4th information: in { meansigma methodss of the 3rd parameter, the variance of the 3rd parameter } extremely
One of few, the 3rd parameter is the length of Bit String.
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
The user equipment of standard and ap (access point, access point).
As the sub- embodiment 4 of embodiment 1, described k priori statistics in pdsch or
Transmit on pusch, described k bit block forms a code block.
As the sub- embodiment 5 of embodiment 1, described k priori statistics are in pdcch
(physical downlink control channel, Physical Downlink Control Channel) is upper to be transmitted.
As the sub- embodiment 6 of embodiment 1, described k bit block forms a tb (transport
Block, transmission block).
As the sub- embodiment 7 of embodiment 1, primary nodal point is in step s110 to described k
Bit block carries out the first coding and obtains the first bit block；Primary nodal point sends in step s111
One wireless signal, the first wireless signal is formed by the bit modulation in target bits block, described target
Bit block includes the bit in the first bit block.Secondary nodal point receives first no in step s210
Line signal, the first wireless signal is formed by the bit modulation in target bits block, described target bits
Block includes the bit in the first bit block；According to described k priori system letter in step s211
Breath carries out the first decoding to the first wireless signal receiving and obtains described k bit block.As institute
State an embodiment of target bits block, described target bits block be by the first bit block and n to
Obtain after definite proportion spy's block interleaving, described given bit block is to carry out obtaining after the first coding by a code block
Arrive.
As the sub- embodiment 8 of embodiment 1, the first information indicates the ratio in corresponding bit block for 1
Special shared ratio in described corresponding bit block.As an embodiment of described ratio, described
Ratio be 0.5,0.52,0.48,0.55,0.45,0.5,0.4, more than 0.5 or be less than
One of 0.4 }.
As the sub- embodiment 9 of embodiment 1, described priori statistics include the first information, the
Two information and the 3rd information.
As the sub- embodiment 10 of embodiment 1, described priori statistics include the first information and
Four information.
As the sub- embodiment 11 of embodiment 1, described k priori statistics and the first wireless communication
Transmit number in same lte subframe.
Embodiment 2
Embodiment 2 illustrates the flow chart retransmitting priori statistics, as shown in Figure 2.
ForPrimary nodal point n3, step s31 sends k priori statistics；In step s32
Middle reception second wireless singal, second wireless singal indicate described k priori statistics whether by
Correct decoding；If second wireless singal indicates described k priori statistics by erroneous interpretations,
Described k priori statistics are resend in step s33.
ForSecondary nodal point n4, step s41 receives k priori statistics；In step s42
Middle transmission second wireless singal；If second wireless singal indicates described k priori statistics quilt
Erroneous interpretations, receive described k priori statistics in step s43 again.
In embodiment 2, described k priori statistics are respectively directed to k bit block, described k
It is positive integer, described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: in { meansigma methodss of the first parameter, the variance of the first parameter } extremely
One of few, the first parameter is the length of the Bit String for first state
-. the 3rd information: in { meansigma methodss of the second parameter, the variance of the second parameter } extremely
One of few, the second parameter is the length of the Bit String for the second state
-. the 4th information: in { meansigma methodss of the 3rd parameter, the variance of the 3rd parameter } extremely
One of few, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described
Bit String is made up of the continuous binary bits of state identical, described Bit String adjacent bit
State change.
As the sub- embodiment 1 of embodiment 2, each described priori statistics includes independent crc
Bit, secondary nodal point n4 is in step s42 according to described crc bit decision described elder generation accordingly
Test whether statistical information receives correctly.
As the sub- embodiment 2 of embodiment 2, primary nodal point n3 is base station, and secondary nodal point n4 is
Ue, described priori statistics transmit on pdsch, and second wireless singal is in pucch (physical
Uplink control channel, Physical Uplink Shared Channel) or pusch on transmit.
As the sub- embodiment 3 of embodiment 2, primary nodal point n3 is ue, and secondary nodal point n4 is base
Stand, described priori statistics transmit on pusch, second wireless singal is in phich (physical
Hybrid-arq indicator channel, physics harq indicate channel) or pdcch on
Transmission.
As the sub- embodiment 4 of embodiment 2, the second information includes the meansigma methodss and of the first parameter
The variance of one parameter.
Embodiment 3
Embodiment 3 illustrates the schematic diagram to priori statistics coding, as shown in Figure 3.Implement
The method in primary nodal point in the corresponding present invention of example 3.
In embodiment 3, the described k priori statistics in the present invention include k group information bit,
Described k group information bit and corresponding with described k priori statistics respectively.
Primary nodal point generates 1 group of check bit according to described k group information bit, and generation method is as follows:
-. after described k group information bit cascade, the cyclic polynomial as input bit sequence generates
The output of device.
Described k group information bit and described 1 group of check bit, as input, are given birth to through second time code
Become the second bit block.
Primary nodal point sends by the 3rd wireless signal of the bit modulation in the second bit block, institute
State modulation and include constellation point, described constellation point adopts y-qam planisphere, described y is
2 positive integer power.
As the sub- embodiment 1 of embodiment 3, described cyclic polynomial maker is:
gcrc24a(d)=[d24+d23+d18+d17+d14+d11+d10+d7+d6+d5+d4+d3+d+1]
Wherein, d represents delay factor.Detailed description is with reference to the 5.1.1 section of ts36.212.
As the sub- embodiment 2 of embodiment 3, second time code is that { convolutional encoding, turbo encodes, ldpc
One of coding }.
Embodiment 4
Embodiment 4 illustrates the schematic diagram of a bit block, as shown in Figure 4.
In embodiment 4, in given bit block 110100111010001, first state is 1, the
Two-state is 0.
Bit String is made up of state identical successive bits as much as possible in bit block, that is, described
Given bit block includes following 9 Bit Strings:
{ 11,0,1,00,111,0,1,000,1 }
Described 9 Bit Strings are respectively labeled as: b1, b2..., b9；The length of described 9 Bit Strings
(i.e. bit number) is respectively labeled as: a1, a2..., a9；Then:
-. in described 9 Bit Strings, it is continuously that the Bit String of first state is { b1, b3, b5, b7,
b9, the first parameter is the length { a of the Bit String for first state1, a3, a5, a7, a9, that is, 2,1,
3,1,1 }, the meansigma methodss of the first parameter are 1/5* σ ai=1.6 (i=1,3,5,7,9), the first ginseng
The variance of number is 1/5* σ (ai-1.6)2=0.64 (i=1,3,5,7,9).
-. in described 9 Bit Strings, it is continuously that the Bit String of the second state is { b2, b4, b6, b8,
First parameter is the length { a of the Bit String for first state2, a4, a6, a8, i.e. { 1,2,1,3 },
The meansigma methodss of the first parameter are 1/4* σ ai=1.75 (i=2,4,6,8), the variance of the first parameter is
1/4*σ(ai-1.75)2=0.6875 (i=2,4,6,8).
-. in described 9 Bit Strings, the 3rd parameter is the length { a of Bit String1, a2..., a9,
I.e. { 2,1,1,2,3,1,1,3,1 }, the meansigma methodss of the 3rd parameter are 1/9* σ ai=1.6667
(i=1～9), the variance of the first parameter is 1/9* σ (ai-1.6667)2=0.667 (i=1～9).
As the sub- embodiment 1 of embodiment 4, the described variance in the present invention is (primary nodal point is sent out
Give secondary nodal point) it is quilt in the form of standard deviation (i.e. the square root of variance) in space interface signaling
Configuration.
As the sub- embodiment 2 of embodiment 4, the described variance in the present invention is (primary nodal point is sent out
Give secondary nodal point) it is to be configured in the form of db (decibel) value in space interface signaling.
Embodiment 5
Embodiment 5 illustrates the schematic diagram according to priori statistics decoding, as shown in Figure 5.Real
Apply the method in the secondary nodal point in the corresponding present invention of example 5.
In embodiment 5, secondary nodal point is according to (being sent by primary nodal point) in the present invention
K priori statistics, translate for the first wireless signal execution first in the present invention receiving
Code.First wireless signal is formed by the bit modulation in target bits block, described target bits block bag
Include the bit in the first bit block.
In embodiment 5, for the given bit in the described k bit block in the present invention, second
According to described k priori statistics auxiliary, node determines that described given bit is the elder generation of first state
Test probability.
As the sub- embodiment 1 of embodiment 5, the described priori statistics in the present invention include first
Information, includes n bit by the target code block of described k bit block cascade (series connection), the
Two nodes determine the bit number m for first state in target code block according to the first information.Secondary nodal point is false
The z1 bit decoding before giving bit described in code block that set the goal is all successfully decoded, described z1
There is the z2 bit for first state, the prior probability of described given bit is in bit
(m-z2)/(n-z1).
As the sub- embodiment 1 of embodiment 5, the described priori statistics in the present invention include first
Information, includes n bit by the target code block of described k bit block cascade (series connection), the
Two nodes determine the bit number m for first state in target code block according to the first information.Secondary nodal point is false
The z1 bit decoding before giving bit described in code block that set the goal is all successfully decoded, described z1
There is the z2 bit for first state, described given bit is that the prior probability of first state is in bit
(m-z2)/(n-z1).
As the sub- embodiment 2 of embodiment 5, the described priori statistics in the present invention include second
Information and the 3rd information, the second information includes { meansigma methodss of the first parameter, the variance of the first parameter },
3rd information includes { meansigma methodss of the second parameter, the variance of the second parameter }.Secondary nodal point supposes the
Element in one parameter and the second parameter correspond with normal distribution, then:
-. if the bit before described given bit is interpreted as first state, described given bit it
Front l1 bit is first state, then described given bit is that the prior probability of first state is: length
The probability of occurrence (being calculated according to the second information) of the Bit String being first state for l1+1 and state.
-. if the bit before described given bit is interpreted as the second state, described given bit it
Front Bit String includes l2 bit, then described given bit is that the prior probability of first state is:
Length be 1-q, the Bit String that described q is l2+1 and state is the second state probability of occurrence (according to
3rd information calculates).
Whether convolutional code, turbo code, or ldpc code, the most basic computing of its channel decoding
It is directed to the prior probability of systematic bits.And the essence of embodiment 5 is: secondary nodal point is using reception
The prior probability of the described priori statistics auxiliary computing system bit arriving, improves decoding performance.
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 k priori statistics.Receiver module 102 is used for receiving
Second wireless singal, second wireless singal indicates whether described k priori statistics are correctly translated
Code.When second wireless singal indicates described k priori statistics by erroneous interpretations, send mould
Block 103 is used for resending described k priori statistics.
In embodiment 6, described k priori statistics are respectively directed to k bit block, described k
It is positive integer, described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: in { meansigma methodss of the first parameter, the variance of the first parameter } extremely
One of few, the first parameter is the length of the Bit String for first state
-. the 3rd information: in { meansigma methodss of the second parameter, the variance of the second parameter } extremely
One of few, the second parameter is the length of the Bit String for the second state
-. the 4th information: in { meansigma methodss of the 3rd parameter, the variance of the 3rd parameter } extremely
One of few, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described
Bit String is made up of the continuous binary bits of state identical, described Bit String adjacent bit
State change.Described k bit block belongs to same code block.
As the sub- embodiment 1 of embodiment 6, sending module 101 is additionally operable to:
-. the first coding is carried out to described k bit block and obtains the first bit block.
-. send the first wireless signal, the first wireless signal is by the bit modulation in target bits block
Become, described target bits block includes the bit in the first bit block.
As the sub- embodiment 2 of embodiment 6, described k is equal to 1.
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 k priori statistics.Sending module 202 is used for transmission the
Two wireless signals, second wireless singal indicates whether described k priori statistics are properly decoded.
When second wireless singal indicates described k priori statistics by erroneous interpretations, receiver module 203
For again receiving described k priori statistics.
In embodiment 7, described k priori statistics are respectively directed to k bit block, described k
It is positive integer, described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: in { meansigma methodss of the first parameter, the variance of the first parameter } extremely
One of few, the first parameter is the length of the Bit String for first state
-. the 3rd information: in { meansigma methodss of the second parameter, the variance of the second parameter } extremely
One of few, the second parameter is the length of the Bit String for the second state
-. the 4th information: in { meansigma methodss of the 3rd parameter, the variance of the 3rd parameter } extremely
One of few, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described
Bit String is made up of the continuous binary bits of state identical, described Bit String adjacent bit
State change.
As the sub- embodiment 1 of embodiment 7, described priori statistics include the first information, and second
Information and the 3rd information.
As the sub- embodiment 2 of embodiment 7, the 4th information include the meansigma methodss of the 3rd parameter,
The variance of three parameters }.
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 k priori statistics.
Wherein, described k priori statistics are respectively directed to k bit block, and described k is positive integer, and described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: at least one of { meansigma methodss of the first parameter, variance of the first parameter }, the first parameter is the length of the Bit String for first state
-. the 3rd information: at least one of { meansigma methodss of the second parameter, variance of the second parameter }, the second parameter is the length of the Bit String for the second state
-. the 4th information: at least one of { meansigma methodss of the 3rd parameter, variance of the 3rd parameter }, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described Bit String is made up of the continuous binary bits of state identical, and the state of described Bit String adjacent bit changes.
2. method according to claim 1 is it is characterised in that described k bit block belongs to same code block.
3., according to claim 1, the method described in 2 is it is characterised in that described step a also comprises the steps:
- step a2. primary nodal point carries out the first coding to described k bit block and obtains the first bit block.
- step a3. primary nodal point sends the first wireless signal, and the first wireless signal is formed by the bit modulation in target bits block, and described target bits block includes the bit in the first bit block.
4. method according to claim 1 is it is characterised in that also comprise the steps:
- step b. primary nodal point receives second wireless singal, and second wireless singal indicates whether described k priori statistics are properly decoded.
5. according to claim 1, method described in 2,4 it is characterised in that described k priori statistics include k group information bit and 1 group of check bit, described k group information bit and corresponding with described k priori statistics respectively.
6. method according to claim 1 is it is characterised in that primary nodal point is base station, or primary nodal point is ue.
7. method according to claim 4 is it is characterised in that also comprise the steps:
- step c. primary nodal point resends described k priori statistics.
Wherein, second wireless singal indicates described k priori statistics by erroneous interpretations.
8. a kind of method of radio communication, wherein, comprises the steps:
- step a. secondary nodal point receives k priori statistics.
Wherein, described k priori statistics are respectively directed to k bit block, and described k is positive integer, and described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: at least one of { meansigma methodss of the first parameter, variance of the first parameter }, the first parameter is the length of the Bit String for first state
-. the 3rd information: at least one of { meansigma methodss of the second parameter, variance of the second parameter }, the second parameter is the length of the Bit String for the second state
-. the 4th information: at least one of { meansigma methodss of the 3rd parameter, variance of the 3rd parameter }, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described Bit String is made up of the continuous binary bits of state identical, and the state of described Bit String adjacent bit changes.
9. method according to claim 8 is it is characterised in that described k bit block belongs to same code block.
10. according to Claim 8, the method described in 9 is it is characterised in that described step a also comprises the steps:
- step a2. secondary nodal point receives the first wireless signal, and the first wireless signal is formed by the bit modulation in target bits block, and described target bits block includes the bit in the first bit block.
- step a3. secondary nodal point carries out the first decoding to the first wireless signal receiving and obtains described k bit block.
11. methods according to claim 8 are it is characterised in that also comprise the steps:
- step b. secondary nodal point sends second wireless singal, and second wireless singal indicates whether described k priori statistics are properly decoded.
12. according to Claim 8, the method described in 9,11 it is characterised in that described k priori statistics include k group information bit and 1 group of check bit, described k group information bit and corresponding with described k priori statistics respectively.
13. methods according to claim 8 are it is characterised in that secondary nodal point is ue, or secondary nodal point is base station.
14. methods according to claim 10 are it is characterised in that described step a also comprises the steps:
- step a30. secondary nodal point is according to described k priori statistics execution first decoding.
15. methods according to claim 11 are it is characterised in that also comprise the steps:
- step c. secondary nodal point receives described k priori statistics again.
Wherein, second wireless singal indicates described k priori statistics by erroneous interpretations.
A kind of 16. equipment for radio communication, wherein, including such as lower module:
First module: for sending k priori statistics.
Wherein, described k priori statistics are respectively directed to k bit block, and described k is positive integer, and described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: at least one of { meansigma methodss of the first parameter, variance of the first parameter }, the first parameter is the length of the Bit String for first state
-. the 3rd information: at least one of { meansigma methodss of the second parameter, variance of the second parameter }, the second parameter is the length of the Bit String for the second state
-. the 4th information: at least one of { meansigma methodss of the 3rd parameter, variance of the 3rd parameter }, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described Bit String is made up of the continuous binary bits of state identical, and the state of described Bit String adjacent bit changes.
A kind of 17. equipment for radio communication, wherein, including such as lower module:
First module: for receiving k priori statistics.
Wherein, described k priori statistics are respectively directed to k bit block, and described k is positive integer, and described priori statistics include at least one of:
-. the first information: the quantity of the bit of first state or ratio
-. the second information: at least one of { meansigma methodss of the first parameter, variance of the first parameter }, the first parameter is the length of the Bit String for first state
-. the 3rd information: at least one of { meansigma methodss of the second parameter, variance of the second parameter }, the second parameter is the length of the Bit String for the second state
-. the 4th information: at least one of { meansigma methodss of the 3rd parameter, variance of the 3rd parameter }, the 3rd parameter is the length of Bit String.
First state and the second state are the state that binary bits may indicate that respectively.Described Bit String is made up of the continuous binary bits of state identical, and the state of described Bit String adjacent bit changes.
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| PCT/CN2016/089951 WO2017016393A1 (en) | 2015-07-24 | 2016-07-14 | Wireless communication method and device |
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