CN106375070B - A kind of repeating method and device in mobile communication system - Google Patents
A kind of repeating method and device in mobile communication system Download PDFInfo
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- CN106375070B CN106375070B CN201510444232.0A CN201510444232A CN106375070B CN 106375070 B CN106375070 B CN 106375070B CN 201510444232 A CN201510444232 A CN 201510444232A CN 106375070 B CN106375070 B CN 106375070B
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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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- 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
Abstract
The invention discloses a kind of repeating methods and device in mobile communication system.As one embodiment, first node sends K priori statistics in step 1.Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, and the priori statistics include the second information: { average value of the first parameter, at least one of the variance of first parameter }, the first parameter is the length of the Bit String for first state.First state and the second state are the state that a binary bits may indicate that respectively.The Bit String is made of the identical continuous binary bits of state, and the state of the Bit String adjacent bit changes.Under the premise of additionally occupying less interface-free resources, the present invention can effectively improve the performance of channel decoding.
Description
Technical field
The present invention relates to the transmission plans of the wireless signal in wireless communication system, more particularly to based on digital modulation
The transmission method and device of wireless signal.
Background technique
Traditional wireless communication system based on digital modulation mode, such as 3GPP (3rd Generation Partner
Project, third generation cooperative partner program) in cellular system and wireless lan communication system (such as Wifi, Wimax), often
One or more binary bits (in transmitter side) is modulated into a constellation point symbol, that is, is mapped to planisphere
(Constellation) constellation point (Constellation Point) in, is then sent.Receiver is according to reception
The constellation point of its mapping of the constellation point symbol decision arrived, and then determine corresponding binary bits.
In order to improve the robustness of wireless signal transmission, transmitter is widely used channel coding and introduces redundant bit.It is common
Channel coding include convolutional code, Turbo code, LDPC (Low Density Parity Check Code, low-density parity-check
Test code) code.Correspondingly, receiver recovers systematic bits using channel decoding.Common channel decoding includes that Viterbi is translated
Code, Log_Map decoding etc..
In order to further increase efficiency of transmission, AMC (Adaptive Modulation and Coding, adaptive coding
Modulation) and HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat-request) as two key technologies
It is widely adopted in wireless communications.Above-mentioned two technologies enable transmitter to select suitable adjust according to quality of wireless channel
Mode (i.e. planisphere) processed and channel coding rate maximize power system capacity.
The challenge that AMC and HARQ are faced is: transmitter is under conditions of accurately can not obtain quality of wireless channel
Possibly suitable modulation system and channel coding rate can not be selected.The reason of quality of wireless channel can not accurately be obtained includes
(but being not limited to): the interference of burst, the quick variation of multipath fading characteristic, receiver delay of feedback etc..
Summary of the invention
In view of the above-mentioned problems, the present invention provides solutions.It should be noted that in the absence of conflict, this Shen
The feature in the embodiment and embodiment in first node please can be applied in second node, and vice versa.Further,
In the absence of conflict, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Inventors discovered through research that: in existing channel decoding, receiver determines first according to the wireless signal received
Information is tested, is then decoded using the prior information.Prior information it is accurate whether can largely influence to decode
Performance.Inventor through further research, it has been found that: although for statistically information source generate binary bits be 1 and 0 ratio
Be it is identical, for give size bit packet, binary bits therein be 1 and 0 ratio may be different.
According to the studies above, the invention discloses a kind of methods of wireless communication, wherein includes the following steps:
Step A. first node sends K priori statistics.
Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics
Information includes at least one of:
- the first information: the quantity or ratio of the bit of first state
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be for
The length of the Bit String of first state
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be for
The length of the Bit String of second state
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter are ratios
The length of spy's string.
First state and the second state are the state that a binary bits may indicate that respectively.The Bit String is by shape
The identical continuous binary bits of state are formed, and the state of the Bit String adjacent bit changes.
The essence of the above method is: receiver directly receives K priori statistics.Believed compared to receiver according to reception
Number estimation prior information for, the correctness of above-mentioned priori statistics is higher.The Bit String includes positive integer state phase
Same binary bits.
As one embodiment, the K is 1.As one embodiment, the K is greater than 1.It is described as one embodiment
Bit block includes positive integer bit.As one embodiment, first state is 1, and the second state is 0.As one embodiment,
First state is -1, and the second state is 1.
Specifically, according to an aspect of the present invention, which is characterized in that the K bit block belongs to the same code block.
As one embodiment, the K is greater than 1.The essence of above-described embodiment is: a code block is divided into multiple bits
Block, transmitter send the priori statistics for each bit block, improve pointing accuracy.
In the present invention, input bit needed for first encoding of the code block by encoder is formed.As a reality
Example is applied, a code block includes up to 6144 binary bits.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A2. first node carries out the first coding to the K bit block and obtains the first bit block.
Step A3. first node sends the first wireless signal, and the first wireless signal is by the bit modulation in target bits block
It forms, the target bits block includes the bit in the first bit block.
As one embodiment, the modulation includes constellation point.As a sub- embodiment, the constellation point
Using X-QAM planisphere, the X is 2 positive integer power.
As one embodiment, the target bits block is obtained after the first bit block is interleaved with other bit blocks
Bit block.As one embodiment, the first coding is convolutional encoding.As one embodiment, the first coding is all that Turbo is compiled
Code.As one embodiment, the first coding is LDPC coding.As one embodiment, the first coding includes rate adaptation operating.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step B. first node receives second wireless singal, and second wireless singal indicates that the K priori statistics are
It is no to be properly decoded.
Second wireless singal is substantially the HARQ_ACK for the priori statistics.
As one embodiment, the priori statistics are uploaded in the physical layer channel for being used for transmission physical layer data
It is defeated.As one embodiment, second wireless singal is transmitted in the physical layer channel for be used for transmission physical layer signaling.As one
Embodiment, second wireless singal are transmitted in the physical layer channel for be used for transmission physical layer data.
As one embodiment, the priori statistics and the first bit block are in the physics for being used for transmission physical layer data
Layer channel, the priori statistics using the first MCS, (compile by Modulation and Coding Status, modulation
Code mode), the first bit block uses the 2nd MCS, the first MCS to have lower BLER (BLock Error compared to the 2nd MCS
Rate, Block Error Rate).Above-described embodiment ensures that the priori statistics have lower BLER.
Specifically, according to an aspect of the present invention, which is characterized in that the K priori statistics include K group information
Bit and 1 group of check bit, the K group information bit and respectively with the K priori statistics correspond.
As one embodiment, the check bit is CRC (Cyclic Redundancy Check, cyclic redundancy check
Code) bit.As one embodiment, the check bit includes 16 or 24 bits.As one embodiment, the school
Test the output that bit is K group information bit cyclic polynomial generator as input.
As one embodiment, the bit of the information bit and the check bit after the second coding is by first segment
Point is sent.As a sub- embodiment, the second coding is convolutional code or Turbo code.
Specifically, according to an aspect of the present invention, which is characterized in that first node is base station or first node is
UE (User Equipment, user equipment).
As one embodiment, first node is to support LTE (Long Term Equipment, long term evolution) standard
Base station, the priori statistics are in PDSCH (Physical Downlink Shared Channel, the shared letter of physical down
Road) on transmit.
As one embodiment, first node is the UE for supporting LTE, and the priori statistics transmit on PUSCH.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step C. first node retransmits the K priori statistics.
Wherein, second wireless singal indicates that the K priori statistics are decoded by mistake.
The invention discloses a kind of methods of wireless communication, wherein includes the following steps:
Step A. second node receives K priori statistics.
Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics
Information includes at least one of:
- the first information: the quantity or ratio of the bit of first state
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be for
The length of the Bit String of first state
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be for
The length of the Bit String of second state
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter are ratios
The length of spy's string.
First state and the second state are the state that a binary bits may indicate that respectively.The Bit String is by shape
The identical continuous binary bits of state are formed, and the state of the Bit String adjacent bit changes.
Specifically, according to an aspect of the present invention, which is characterized in that the K bit block belongs to the same code block.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A2. second node receives the first wireless signal, and the first wireless signal is by the bit modulation in target bits block
It forms, the target bits block includes the bit in the first bit block.
Step A3. second node carries out the first decoding to the first wireless signal received and obtains the K bit block.
As one embodiment, in the step A2, second node deinterleaves from the bit block received and obtains first
Bit block.As one embodiment, the first decoding is Viterbi decoding.As one embodiment, the first decoding is Log_Map
Decoding.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step B. second node sends second wireless singal, and second wireless singal indicates that the K priori statistics are
It is no to be properly decoded.
Specifically, according to an aspect of the present invention, which is characterized in that the K priori statistics include K group information
Bit and 1 group of check bit, the K group information bit and respectively with the K priori statistics correspond.
Specifically, according to an aspect of the present invention, which is characterized in that second node is UE or second node is base
It stands.
As one embodiment, the UE is the data card for supporting Wifi standard.As one embodiment, the UE is branch
Hold the portable device of LTE standard.As one embodiment, the UE is vehicular communication equipment.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A30. second node executes the first decoding according to the K priori statistics.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step C. second node receives the K priori statistics again.
Wherein, second wireless singal indicates that the K priori statistics are decoded by mistake.
The invention discloses a kind of equipment for wireless communication, wherein including following module:
First module: for sending K priori statistics.
Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics
Information includes at least one of:
- the first information: the quantity or ratio of the bit of first state
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be for
The length of the Bit String of first state
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be for
The length of the Bit String of second state
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter are ratios
The length of spy's string.
First state and the second state are the state that a binary bits may indicate that respectively.The Bit String is by shape
The identical continuous binary bits of state are formed, and the state of the Bit String adjacent bit changes.
The invention discloses a kind of equipment for wireless communication, wherein including following module:
First module: for receiving K priori statistics.
Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics
Information includes at least one of:
- the first information: the quantity or ratio of the bit of first state
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be for
The length of the Bit String of first state
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be for
The length of the Bit String of second state
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter are ratios
The length of spy's string.
First state and the second state are the state that a binary bits may indicate that respectively.The Bit String is by shape
The identical continuous binary bits of state are formed, and the state of the Bit String adjacent bit changes.
Compared to existing public technology, the present invention has following technical advantage:
- improves decoding performance using priori statistics, and then improves spectrum efficiency and power system capacity
Compared to pure by (channel coding introduces) redundant bit, priori statistics occupancy is less to eat dishes without rice or wine to provide-
Source
- is used for transmission the physical layer channel transmission priori statistics of physical layer data, avoids occupying control channel
Resource.In addition, receiver, which sends HARQ_ACK for priori statistics, can ensure that priori statistics are properly received.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the flow chart of wireless transmission according to an embodiment of the invention；
Fig. 2 shows the flow charts according to an embodiment of the invention for retransmitting priori statistics；
Fig. 3 shows the schematic diagram according to an embodiment of the invention to priori statistics coding；
Fig. 4 shows the schematic diagram of a bit block according to an embodiment of the invention；
Fig. 5 shows the schematic diagram according to an embodiment of the invention decoded according to priori statistics；
Fig. 6 shows the structural block diagram of the processing unit in first node according to an embodiment of the invention；
Fig. 7 shows the structural block diagram of the processing unit in second node according to an embodiment of the invention；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 illustrates the flow chart of wireless transmission, as shown in Fig. 1.In attached drawing 1, the step in box T1 is can
Select step.
ForFirst node N1, K priori statistics are sent in step s 11.ForSecond node N2, in step
K priori statistics are received in S21.
In embodiment 1, first state and the second state are the state that a binary bits may indicate that, the K respectively
A priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics include it is following at least it
One:
- the first information: the quantity or ratio of the bit of first state
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be for
The length of the Bit String of first state
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be for
The length of the Bit String of second state
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter are ratios
The length of spy's string.
As the sub- embodiment 1 of embodiment 1, first node is base station, and second node is UE, and base station N1 is the clothes of UE N2
The maintenance base station for cell of being engaged in,.
As the sub- embodiment 2 of embodiment 1, first node is UE, and second node is base station, and base station N2 is the clothes of UE N1
The maintenance base station for cell of being engaged in.
As the sub- embodiment 3 of embodiment 1, first node and second node are the user equipment for supporting Wifi standard respectively
With AP (Access Point, access point).
As the sub- embodiment 4 of embodiment 1, the K priori statistics transmit on PDSCH or PUSCH, described
K bit block forms a code block.
As the sub- embodiment 5 of embodiment 1, the K priori statistics are in PDCCH (Physical Downlink
Control Channel, Physical Downlink Control Channel) on transmit.
As the sub- embodiment 6 of embodiment 1, the K bit block forms a TB (Transport Block, transmission
Block).
As the sub- embodiment 7 of embodiment 1, first node carries out first to the K bit block in step s 110 and compiles
Code obtains the first bit block；First node sends the first wireless signal in step S111, and the first wireless signal is by target bits
Bit modulation in block forms, and the target bits block includes the bit in the first bit block.Second node is in step S210
The first wireless signal is received, the first wireless signal is formed by the bit modulation in target bits block, and the target bits block includes
Bit in first bit block；The first wireless signal received in step S211 according to the K priori system information butt joint
It carries out the first decoding and obtains the K bit block.As one embodiment of the target bits block, the target bits block is
By obtaining after the first bit block and N number of given bit block interleaving, the given bit block is that the first coding is carried out by a code block
After obtain.
As the sub- embodiment 8 of embodiment 1, the first information indicates the bit in corresponding bit block for 1 in the corresponding ratio
Shared ratio in special block.As one embodiment of the ratio, the ratio be 0.5,0.52,0.48,0.55,0.45,
0.5,0.4, be greater than 0.5 or less than 0.4 in one.
As the sub- embodiment 9 of embodiment 1, the priori statistics include the first information, the second information and third letter
Breath.
As the sub- embodiment 10 of embodiment 1, the priori statistics include the first information and the 4th information.
As the sub- embodiment 11 of embodiment 1, the K priori statistics and the first wireless signal are in the same LTE
It is transmitted in subframe.
Embodiment 2
Embodiment 2 illustrates the flow chart for retransmitting priori statistics, as shown in Fig. 2.
ForFirst node N3, K priori statistics are sent in step S31；It is wireless that second is received in step s 32
Signal, second wireless singal indicate whether the K priori statistics are properly decoded；If second wireless singal indicates institute
It states K priori statistics to be decoded by mistake, the K priori statistics is retransmitted in step S33.
ForSecond node N4, K priori statistics are received in step S41；It is wireless that second is sent in step S42
Signal；If second wireless singal indicates that the K priori statistics are decoded by mistake, institute is received again in step S43
State K priori statistics.
In embodiment 2, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori
Statistical information includes at least one of:
- the first information: the quantity or ratio of the bit of first state
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be for
The length of the Bit String of first state
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be for
The length of the Bit String of second state
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter are ratios
The length of spy's string.
First state and the second state are the state that a binary bits may indicate that respectively.The Bit String is by shape
The identical continuous binary bits of state are formed, and the state of the Bit String adjacent bit changes.
As the sub- embodiment 1 of embodiment 2, each priori statistics include independent CRC bit, second node
According to the CRC bit decision, whether the priori statistics receive correctly N4 accordingly in step S42.
As the sub- embodiment 2 of embodiment 2, first node N3 is base station, and second node N4 is UE, the priori statistics letter
Breath transmits 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, first node N3 is UE, and second node N4 is base station, the priori statistics letter
Breath transmits on PUSCH, and second wireless singal is in PHICH (Physical Hybrid-ARQ Indicator Channel, object
Reason HARQ indicate channel) or PDCCH on transmit.
As the sub- embodiment 4 of embodiment 2, the second information includes the average value of the first parameter and the variance of the first parameter.
Embodiment 3
Embodiment 3 illustrates the schematic diagram to priori statistics coding, as shown in Fig. 3.The corresponding present invention of embodiment 3
In first node in method.
In embodiment 3, the K priori statistics in the present invention include K group information bit, the K group information ratio
It is special and respectively with K priori statistics one-to-one correspondence.
First node generates 1 group of check bit according to the K group information bit, and generation method is as follows:
Output after the cascade of K group information bit described in-as the cyclic polynomial generator of input bit sequence.
The K group information bit and 1 group of check bit generate the second bit block by second time code as input.
First node sends the third wireless signal as made of the bit modulation in the second bit block, and the modulation includes star
Seat point mapping, the constellation point use Y-QAM planisphere, and the Y is 2 positive integer power.
As the sub- embodiment 1 of embodiment 3, the cyclic polynomial generator are as follows:
gCRC24A(D)=[D24+D23+D18+D17+D14+D11+D10+D7+D6+D5+D4+D3+D+1]
Wherein, D indicates delay factor.Detailed description is saved with reference to the 5.1.1 of TS36.212.
As the sub- embodiment 2 of embodiment 3, second time code is one in { convolutional encoding, Turbo coding, LDPC coding }
Kind.
Embodiment 4
Embodiment 4 illustrates the schematic diagram of a bit block, as shown in Fig. 4.
In embodiment 4, give in bit block 110100111010001, first state is 1, and the second state is 0.
Bit String is made of the identical successive bits of state as much as possible in bit block, i.e., the described given bit block
Including following 9 Bit Strings:
{ 11,0,1,00,111,0,1,000,1 }
9 Bit Strings are respectively labeled as: b1, b2..., b9；The length (i.e. bit number) of 9 Bit Strings is respectively
Label are as follows: a1, a2..., a9；Then:
It is continuously { b for the Bit String of first state in 9 Bit Strings described in-1, b3, b5, b7, b9, the first parameter be for
Length { a of the Bit String of first state1, a3, a5, a7, a9, i.e., { 2,1,3,1,1 }, the average value of the first parameter is 1/5* Σ ai
=1.6 (i=1,3,5,7,9), the variance of the first parameter are 1/5* Σ (ai-1.6)2=0.64 (i=1,3,5,7,9).
It is continuously { b for the Bit String of the second state in 9 Bit Strings described in-2, b4, b6, b8, the first parameter be
Length { a of the Bit String of one state2, a4, a6, a8, i.e., { 1,2,1,3 }, the average value of the first parameter is 1/4* Σ ai=1.75
(i=2,4,6,8), the variance of the first parameter are 1/4* Σ (ai-1.75)2=0.6875 (i=2,4,6,8).
In 9 Bit Strings described in-, third parameter is the length { a of Bit String1, a2..., a9, i.e., 2,1,1,2,3,1,
1,3,1 }, the average value of third parameter is 1/9* Σ ai=1.6667 (i=1~9), the variance of the first parameter are 1/9* Σ (ai-
1.6667)2=0.667 (i=1~9).
As the sub- embodiment 1 of embodiment 4, the variance in the present invention is (first node is sent to second node)
It is to be configured in space interface signaling in the form of standard deviation (i.e. the square root of variance).
As the sub- embodiment 2 of embodiment 4, the variance in the present invention is (first node is sent to second node)
It is to be configured in space interface signaling in the form of dB (decibel) value.
Embodiment 5
Embodiment 5 illustrates the schematic diagram decoded according to priori statistics, as shown in Fig. 5.Embodiment 5 corresponds to this hair
The method in second node in bright.
In embodiment 5, second node according to the present invention in (being sent by first node) described K priori statistics believe
Breath executes the first decoding for the first wireless signal in the present invention received.First wireless signal is by target bits block
Bit modulation form, the target bits block includes the bit in the first bit block.
In embodiment 5, for the given bit in the K bit block in the present invention, second node is according to the K
Priori statistics auxiliary determines that the given bit is the prior probability of first state.
As the sub- embodiment 1 of embodiment 5, the priori statistics in the present invention include the first information, by the K
Target code block made of a bit block cascade (series connection) includes N number of bit, and second node determines target code block according to the first information
In be first state bit number M.Second node assumes to give the Z1 bit decoded before bit described in target code block all
Successfully decoded, having Z2 in the Z1 bit is the bit of first state, the prior probability of the given bit be (M-Z2)/
(N-Z1)。
As the sub- embodiment 1 of embodiment 5, the priori statistics in the present invention include the first information, by the K
Target code block made of a bit block cascade (series connection) includes N number of bit, and second node determines target code block according to the first information
In be first state bit number M.Second node assumes to give the Z1 bit decoded before bit described in target code block all
It is successfully decoded, there is the bit that Z2 are first state in the Z1 bit, the given bit is that the priori of first state is general
Rate is (M-Z2)/(N-Z1).
As the sub- embodiment 2 of embodiment 5, the priori statistics in the present invention include that the second information and third are believed
Breath, the second information include { average value of the first parameter, the variance of the first parameter }, and third information includes that { the second parameter is averaged
Value, the variance of the second parameter }.What second node assumed the first parameter and the element in the second parameter corresponds with normal distribution,
Then:
If the bit before-the given bit is interpreted as first state, the L1 bit before the given bit
For first state, then the given bit is the prior probability of first state are as follows: length is L1+1 and state is first state
The probability of occurrence (being calculated according to the second information) of Bit String.
If the bit before-the given bit is interpreted as the second state, the Bit String before the given bit
In include L2 bit, then the given bit for first state prior probability are as follows: length 1-Q, the Q are L2+1 and shape
State is the probability of occurrence (being calculated according to third information) of the Bit String of the second state.
Whether the most basic operation of convolutional code, Turbo code or LDPC code, channel decoding is directed to system
The prior probability of bit.And the essence of embodiment 5 is: second node is calculated using the priori statistics auxiliary received
The prior probability of systematic bits, improves decoding performance.
Embodiment 6
Embodiment 6 illustrates the structural block diagram of the processing unit in first node, as shown in Fig. 6.In attached drawing 6, processing
Device 100 is mainly made of sending module 101, receiving module 102 and sending module 103, the mould wherein identified in dotted line frame T2
Block is optional module.
Sending module 101 is for sending K priori statistics.Receiving module 102 is used to receive second wireless singal, the
Two wireless signals indicate whether the K priori statistics are properly decoded.When second wireless singal indicates the K priori
When statistical information is decoded by mistake, sending module 103 is for retransmitting the K priori statistics.
In embodiment 6, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori
Statistical information includes at least one of:
- the first information: the quantity or ratio of the bit of first state
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be for
The length of the Bit String of first state
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be for
The length of the Bit String of second state
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter are ratios
The length of spy's string.
First state and the second state are the state that a binary bits may indicate that respectively.The Bit String is by shape
The identical continuous binary bits of state are formed, and the state of the Bit String adjacent bit changes.The K bit block
Belong to the same code block.
As the sub- embodiment 1 of embodiment 6, sending module 101 is also used to:
- carries out the first coding to the K bit block and obtains the first bit block.
- sends the first wireless signal, and the first wireless signal is formed by the bit modulation in target bits block, the target
Bit block includes the bit in the first bit block.
As the sub- embodiment 2 of embodiment 6, the K is equal to 1.
Embodiment 7
Embodiment 7 illustrates the structural block diagram of the processing unit in second node, as shown in Fig. 7.In attached drawing 7, processing
Device 200 is mainly made of receiving module 201, sending module 202 and receiving module 203, the mould wherein identified in dotted line frame T3
Block is optional module.
Receiving module 201 is for receiving K priori statistics.Sending module 202 is used to send second wireless singal, the
Two wireless signals indicate whether the K priori statistics are properly decoded.When second wireless singal indicates the K priori
When statistical information is decoded by mistake, receiving module 203 for receiving the K priori statistics again.
In embodiment 7, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori
Statistical information includes at least one of:
- the first information: the quantity or ratio of the bit of first state
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be for
The length of the Bit String of first state
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be for
The length of the Bit String of second state
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter are ratios
The length of spy's string.
First state and the second state are the state that a binary bits may indicate that respectively.The Bit String is by shape
The identical continuous binary bits of state are formed, and the state of the Bit String adjacent bit changes.
As the sub- embodiment 1 of embodiment 7, the priori statistics include the first information, the second information and third letter
Breath.
As the sub- embodiment 2 of embodiment 7, the 4th information includes { average value of third parameter, the variance of third parameter }.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be referred to by program
Related hardware is enabled to complete, described program can store in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, one or more integrated circuit can be used also to realize in all or part of the steps of above-described embodiment.Phase
It answers, each modular unit in above-described embodiment, can be realized using example, in hardware, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.UE or terminal in the present invention include but not
It is limited to mobile phone, tablet computer, notebook, card of surfing Internet, the wireless telecom equipments such as automobile.Base station in the present invention includes but is not limited to
Macrocell base stations, microcell base station, Home eNodeB, the wireless telecom equipments such as relay base station.The embodiment of the present invention is mainly base
In LTE system, however the scope of application of the invention further includes the wireless communication system that (but being not limited to) arbitrarily supports digital modulation
It unites (such as 3G, Wifi, Wimax, following 5G communication system etc.).
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in protection of the invention
Within the scope of.
Claims (26)
1. a kind of method of wireless communication, wherein include the following steps:
Step A. first node sends K priori statistics；
Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics
Including at least one of:
- the first information: the quantity or ratio of the bit of first state；
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be first
The length of the Bit String of state；
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be second
The length of the Bit String of state；
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter is Bit String
Length；
First state and the second state are the state that a binary bits may indicate that respectively；The Bit String is by state phase
Same continuous binary bits are formed, and the state of the Bit String adjacent bit changes；
The step A further includes following steps:
Step A2. first node carries out the first coding to the K bit block and obtains the first bit block；
Step A3. first node send the first wireless signal, the first wireless signal by the bit modulation in target bits block and
At the target bits block includes the bit in the first bit block.
2. the method according to claim 1, wherein the K bit block belongs to the same code block.
3. the method according to claim 1, wherein further including following steps:
Step B. first node receives second wireless singal, second wireless singal indicate the K priori statistics whether by
Correct decoding.
4. according to claim 1, method described in any claim in 2 or 3, which is characterized in that the K priori statistics letter
Breath includes K group information bit and 1 group of check bit, and the K group information bit is a pair of with the K priori statistics one respectively
It answers.
5. the method according to claim 1, wherein first node is base station or first node is UE.
6. according to the method described in claim 3, it is characterized in that, further including following steps:
Step C. first node retransmits the K priori statistics；
Wherein, second wireless singal indicates that the K priori statistics are decoded by mistake.
7. a kind of method of wireless communication, wherein include the following steps:
Step A. second node receives K priori statistics；
Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics
Including at least one of:
- the first information: the quantity or ratio of the bit of first state；
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be first
The length of the Bit String of state；
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be second
The length of the Bit String of state；
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter is Bit String
Length；
First state and the second state are the state that a binary bits may indicate that respectively；The Bit String is by state phase
Same continuous binary bits are formed, and the state of the Bit String adjacent bit changes；
The step A further includes following steps:
Step A2. second node receive the first wireless signal, the first wireless signal by the bit modulation in target bits block and
At the target bits block includes the bit in the first bit block；
Step A3. second node carries out the first decoding to the first wireless signal received and obtains the K bit block.
8. the method according to the description of claim 7 is characterized in that the K bit block belongs to the same code block.
9. the method according to the description of claim 7 is characterized in that further including following steps:
Step B. second node sends second wireless singal, second wireless singal indicate the K priori statistics whether by
Correct decoding.
10. according to method described in any claim in claim 7,8 or 9, which is characterized in that the K priori statistics
Information includes K group information bit and 1 group of check bit, the K group information bit respectively with the K priori statistics one by one
It is corresponding.
11. the method according to the description of claim 7 is characterized in that second node is UE or second node is base station.
12. the method according to the description of claim 7 is characterized in that the step A further includes following steps:
Step A30. second node executes the first decoding according to the K priori statistics.
13. according to the method described in claim 9, it is characterized in that, further including following steps:
Step C. second node receives the K priori statistics again；
Wherein, second wireless singal indicates that the K priori statistics are decoded by mistake.
14. a kind of wireless telecom equipment, wherein including following module:
Sending module (101): for sending K priori statistics；
Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics
Including at least one of:
- the first information: the quantity or ratio of the bit of first state；
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be first
The length of the Bit String of state；
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be second
The length of the Bit String of state；
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter is Bit String
Length；
First state and the second state are the state that a binary bits may indicate that respectively；The Bit String is by state phase
Same continuous binary bits are formed, and the state of the Bit String adjacent bit changes；
The sending module (101) carries out the first coding to the K bit block and obtains the first bit block；
The sending module (101) sends the first wireless signal, the first wireless signal by the bit modulation in target bits block and
At the target bits block includes the bit in the first bit block.
15. wireless telecom equipment according to claim 14, which is characterized in that the K bit block belongs to the same code
Block.
16. wireless telecom equipment according to claim 14 characterized by comprising
Receiving module (102): for receiving second wireless singal, second wireless singal indicates that the K priori statistics are
It is no to be properly decoded.
17. wireless telecom equipment described in any claim in 4,15 or 16 according to claim 1, which is characterized in that the K
A priori statistics include K group information bit and 1 group of check bit, and the K group information bit is united with the K priori respectively
Information is counted to correspond.
18. wireless telecom equipment according to claim 14, which is characterized in that the wireless telecom equipment is base station, or
Wireless telecom equipment described in person is UE.
19. 6 equipment for wireless communication according to claim 1, which is characterized in that
The equipment for wireless communication retransmits the K priori statistics；
Wherein, second wireless singal indicates that the K priori statistics are decoded by mistake.
20. a kind of wireless telecom equipment, wherein including following module:
Receiving module (201): for receiving K priori statistics；
Wherein, the K priori statistics are directed to K bit block respectively, and the K is positive integer, the priori statistics
Including at least one of:
- the first information: the quantity or ratio of the bit of first state；
The second information of-: at least one of { average value of the first parameter, variance of the first parameter }, the first parameter be first
The length of the Bit String of state；
- third information: at least one of { average value of the second parameter, variance of the second parameter }, the second parameter be second
The length of the Bit String of state；
The 4th information of-: at least one of { average value of third parameter, variance of third parameter }, third parameter is Bit String
Length；
First state and the second state are the state that a binary bits may indicate that respectively；The Bit String is by state phase
Same continuous binary bits are formed, and the state of the Bit String adjacent bit changes；
The receiving module (201) receives the first wireless signal, the first wireless signal by the bit modulation in target bits block and
At the target bits block includes the bit in the first bit block；
The receiving module (201) carries out the first decoding to the first wireless signal received and obtains the K bit block.
21. wireless telecom equipment according to claim 20, which is characterized in that the K bit block belongs to the same code
Block.
22. wireless telecom equipment according to claim 20 characterized by comprising
Sending module (202): for sending second wireless singal, second wireless singal indicates that the K priori statistics are
It is no to be properly decoded.
23. according to wireless telecom equipment described in any claim in claim 20,21 or 22, which is characterized in that the K
A priori statistics include K group information bit and 1 group of check bit, and the K group information bit is united with the K priori respectively
Information is counted to correspond.
24. wireless telecom equipment according to claim 20, which is characterized in that the wireless telecom equipment is UE, or
The wireless telecom equipment is base station.
25. wireless telecom equipment according to claim 20, which is characterized in that the receiving module (201) is according to the K
A priori statistics execute the first decoding.
26. wireless telecom equipment according to claim 22 characterized by comprising
Receiving module (203): for receiving the K priori statistics again；
Wherein, second wireless singal indicates that the K priori statistics are decoded by mistake.
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