CN108173619A - A kind of information coding method, coding/decoding method and device - Google Patents
A kind of information coding method, coding/decoding method and device Download PDFInfo
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- CN108173619A CN108173619A CN201611116860.7A CN201611116860A CN108173619A CN 108173619 A CN108173619 A CN 108173619A CN 201611116860 A CN201611116860 A CN 201611116860A CN 108173619 A CN108173619 A CN 108173619A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
- H04L1/0063—Single parity check
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Abstract
The invention discloses a kind of information coding method, coding/decoding method and device, described information coding method includes：Access network equipment generates positive and inverse code, the positive and inverse code includes information bit and the check bit after described information position, if the number of preset value is even number in described information position, the result that then check bit is negated for each bit of described information position, if the number of preset value is odd number in described information position, then the check bit is identical with described information position, described information position is used to indicate the reception condition for the upstream data that the access network equipment sends the terminal device, the reception condition includes affirmative acknowledgement and negative response, the check bit is used to verify described information position；The access network equipment sends the positive and inverse code.This method reduces the probability of ACK/NACK false retrievals, so as to ensure that system reliability is transmitted by introducing positive and inverse code and having the decision rule of skewed popularity.
Description
Technical field
This application involves a kind of wireless communication field more particularly to information coding method, coding/decoding method and devices.
Background technology
In LTE system, between base station and terminal mutually send information when, either party can serve as sender or
Person recipient after recipient receives the information from sender, needs to judge whether the information can be correctly received.If
It is retransmission feedback system, then recipient also needs to will determine that result feeds back to sender.Usually, in feedback mechanism, if
Recipient judges that the information received demodulation is correct, then feedback information " 1 " is to sender；If it is determined that the information demodulation received
Mistake, then feedback information " 0 ".
The information that base station and terminal are sent may be used a variety of coding modes, such as the transmitting terminal of LTE data channels can be with
First using cyclic redundancy check code (Cyclic Redundancy Check, CRC), Turbo code or convolutional code pair are then used again
Information is encoded.Recipient is receiving Turbo code or convolutional code and then is judging data according to the cyclic redundancy check of reception
Whether the information of channel is correctly received.In addition, LTE feedacks can also use Walsh to encode, the spy of Walsh codings
Putting is：It transmitting multiplex information, every road information can be encoded on identical running time-frequency resource using different Walsh codes, this
It is just orthogonal between sample multiline message, can this road information be decoded according to respective Walsh codes in recipient.
For above-mentioned a variety of coding modes, using Turbo code or the coding mode of convolutional code, due to Turbo code or convolution
Code, which does not have, judges the whether correct function of decoding data, and not high compared with the reliability of short-term information encoding, so can only
Judge whether transmission decoding is correct, causes encoding overhead larger by increasing cyclic redundancy check.If encoded using Walsh,
It so in the case where channel condition is poor, can not judge whether decoded information is correct, and then cannot be guaranteed transmission information
Reliability.
Invention content
Provided herein a kind of information coding method, coding/decoding method and device, can with improve transmission of feedback information
By property, and do not increase encoding overhead.In order to solve the technical problem, this application discloses following technical solutions：
In a first aspect, the present embodiment provides a kind of information coding method, method includes：Access network equipment generates positive and inverse code,
The positive and inverse code include information bit and the check bit after described information position, if in described information position preset value number
For even number, such as bit " 1 " is even number, if then the check bit is negated for each bit of described information position as a result, institute
The number for stating preset value in information bit is odd number, then the check bit is identical with described information position, and described information position is used to indicate
The reception condition for the upstream data that the access network equipment sends the terminal device, the reception condition include affirmative acknowledgement
And negative response, the check bit are used to verify described information position；The access network equipment is sent at least one terminal device
The positive and inverse code.
Further, described information position is additionally operable to indicate following at least one information：The terminal device sends upper line number
According to running time-frequency resource position, the terminal device sends the power of upstream data, the terminal device receive downlink data when
Frequency resource location.
The method that present aspect provides has the positive and inverse code of information bit and check bit, and information bit and check bit by setting
With certain setting rule, so after recipient receives positive and inverse code, it can be generated and verified according to the content of positive and inverse code
Code, and pass through check code docking collection of letters breath and make decisions, the decision rule according to positive and inverse code reduces ACK/NACK false retrievals
Probability, so as to ensure that system reliability is transmitted.
Second aspect, the present embodiment provides a kind of information decoding methods, should corresponding to the information coding method of first aspect
Coding/decoding method includes：Terminal device obtains the first positive and inverse code, and first positive and inverse code includes information bit and positioned at described information position
Check bit later, described information position is identical with the bit number of the check bit, and described information position is used to indicate the access net
The reception condition for the upstream data that equipment sends the terminal device, the reception condition includes affirmative acknowledgement and negative should
It answers, the check bit is used to verify described information position；The terminal device generates the first school according to described information position and check bit
Test formula；The terminal device determines whether described information position is correct according to the first verification formula.
The method that present aspect provides, by introducing positive and inverse code and having the decision rule of skewed popularity so that terminal device is connecing
It after receiving positive and inverse code, can quickly judge receive whether information is correct, improve probability of the NACK false retrievals for ACK.
In addition, the method that present aspect provides, information bit and check bit in positive and inverse code can generate check bit, the school
Position is tested for being verified to data information, it is whether correct to judge to transmit decoding so as to avoid being further added by cyclic redundancy check, it saves
About encoding overhead.
With reference to second aspect, during in second aspect, the first is realized, the terminal device is according to described information position and supervision
Position the first verification formula of generation includes：XOR operation is done to the bit in described information position and the check bit and generates first school
Test formula.
With reference to second aspect, in second of realization of second aspect, described information position is additionally operable to indicate following at least one
Information：The terminal device sends the running time-frequency resource position of upstream data；The terminal device sends the power of upstream data；Institute
State the running time-frequency resource position that terminal device receives downlink data.
With reference to second aspect and second aspect the first or any one in realizing for second, in second aspect third
During kind is realized, the terminal device generates the first verification formula according to described information position and check bit and includes：If described information position
The number of middle preset value is even number, then generates the second verification formula, and be to determine described information position using the second verification formula
No correct, the second verification formula is the result that each bit negates in the first verification formula；If it is preset in information bit
The number of value is odd number, then the first verification formula remains unchanged.
With reference to the third realization of second aspect, in the 4th kind of second aspect is realized, the terminal device is according to described the
One verification formula determines whether described information position correctly includes：
If the bit in the first verification formula or the second verification formula is all " 0 ", it is determined that described information position is just
Really, the terminal device directly reads the data of described information position；
If only a bit is " 1 " in the first verification formula or the second verification formula, it is determined that corresponding to institute
Mistake occurs when stating the bit transfer on the check bit that bit is " 1 ", the transmission of described information position is correct, and the terminal device is direct
Read the data of described information position；
If only a bit is " 0 " in the first verification formula or the second verification formula, it is determined that corresponding to institute
Mistake occurs when stating the bit transfer in the information bit that bit is " 0 ", the terminal device corrects the information that mistake occurs
Position, and read the information bit after the correction；
If the bit of the first verification formula or the second verification formula is not " 0 " or at least two bits entirely
For " 1 " or at least two bits are " 0 ", it is determined that in transmission mistake, described information position occur at least two bits
In vain, the terminal device stops reading described information position.
With reference to the 4th kind of realization of second aspect, in the 5th kind of realization of second aspect, method further includes, if described information
Position is correct or described information position be repaired after effectively, and the reception condition of the upstream data of described information position instruction is negative
Response, then the terminal device retransmit the upstream data.
With reference to the 4th kind of realization of second aspect, in the 6th kind of realization of second aspect, method further includes, if described information
Position is correct or described information position is repaired afterwards effectively, and described information position is used to indicate the running time-frequency resource of the terminal device
Position, alternatively, instruction send upstream data power, then the terminal device according to described information position instruction work.
With reference to the 4th kind of realization of second aspect, in the 7th kind of realization of second aspect, method further includes, if described information
Position is invalid, and the invalid information bit is used to indicate the reception feelings for the upstream data that terminal device is sent to access network equipment
Condition, then the terminal device retransmit the upstream data.
With reference to the 4th kind of realization of second aspect, in the 8th kind of realization of second aspect, method further includes, if described information
Position is invalid, and the invalid information bit is used to indicate the running time-frequency resource position of the terminal device, alternatively, instruction sends uplink
The power of data, then the terminal device according to preset running time-frequency resource position or power work or to it is described access net set
Preparation send retransmission request.
The third aspect, the present embodiment provides a kind of information coding device, including processing unit, for generating positive and inverse code, institute
It states positive and inverse code and includes information bit and the check bit after described information position, if the number of preset value is in described information position
Even number, if then the check bit for described information position each bit negate as a result, in described information position preset value
Number is odd number, then the check bit is identical with described information position, and the check bit is used to verify described information position；Transmit-Receive Unit,
For sending the positive and inverse code.Wherein, described information position is used to indicate the uplink that the access network equipment sends terminal device
The reception condition of data, the reception condition include affirmative acknowledgement or negative response.
Fourth aspect, the present embodiment provides a kind of information decoding device, including：Transmit-Receive Unit, it is positive and negative for obtaining first
Code, first positive and inverse code include information bit and the check bit after described information position, described information position and the supervision
The bit number of position is identical, and described information position is used to indicate the upstream data that the access network equipment sends the terminal device
Reception condition, the reception condition include affirmative acknowledgement and negative response, and the check bit is used to verify described information position；Processing
Unit, for according to described information position and check bit generation the first verification formula；And according to determining the first verification formula
Whether information bit is correct.
5th aspect, present invention also provides a kind of access network equipments, described for generating positive and inverse code including processor
Positive and inverse code includes information bit and the check bit after described information position, if the number of preset value is even in described information position
Number, if then the check bit for described information position each bit negate as a result, in described information position preset value number
For odd number, then the check bit is identical with described information position；Transceiver, for sending the positive and inverse code.Wherein, described information position
The reception condition for the upstream data that the access network equipment sends terminal device is used to indicate, the reception condition includes affirmative
Response or negative response.
6th aspect, present invention also provides a kind of terminal device, including transceiver, for obtaining the first positive and inverse code, institute
It states the first positive and inverse code and includes information bit and the check bit after described information position, described information position and the ratio of the check bit
Special number is identical, and described information position is used to indicate the reception feelings for the upstream data that the access network equipment sends the terminal device
Condition, the reception condition include affirmative acknowledgement and negative response, and the check bit is used to verify described information position；Processor is used
According to described information position and check bit generation the first verification formula；The processor is additionally operable to true according to the first verification formula
Whether correct determine described information position.
In addition, the terminal device further includes the unit mould for performing method and step in each realization method of second aspect
Block.Wherein, the Transmit-Receive Unit can be realized by the transceiver in the terminal device or as described in processor control
Transceiver is realized.
7th aspect, present invention also provides a kind of information encoding-decoding system, including aforementioned 5th aspect realization method institute
The base station access network equipment stated or the terminal device described in including the aforementioned 6th aspect or the 6th various realization methods of aspect.
Eighth aspect, the application also provide a kind of computer storage media, wherein, which can be stored with
Program, the program may include that the application provides the portion in each realization method of a kind of information coding method, coding/decoding method when performing
Point or Overall Steps.
The method that the application provides, access network equipment have the positive and inverse code of information bit and check bit, and information by setting
Position and check bit have certain setting rule, so after terminal device receives the positive and inverse code of access network equipment transmission,
Generation check code can be parsed, and passes through check code docking collection of letters breath and makes decisions, avoids, using existing coding mode, connecing
Log equipment needs increase cyclic redundancy check to judge the correctness of information transmission, has saved transport overhead, and according to positive and inverse code
Decision rule also reduce the probability of ACK or NACK false retrievals, improve the reliability of information transmission.
Description of the drawings
In order to illustrate more clearly of the technical solution in the embodiment of the present application, make required in being described below to embodiment
Attached drawing is briefly described.
Fig. 1 is a kind of structure diagram of LTE system provided by the embodiments of the present application；
Fig. 2 is the schematic diagram of a kind of data provided by the embodiments of the present application and feedback channel；
Fig. 3 is a kind of flow diagram of information coding method provided by the embodiments of the present application；
Fig. 4 is the flow diagram that a kind of access network equipment provided by the embodiments of the present application generates positive and inverse code；
Fig. 5 is a kind of flow diagram of information decoding method provided by the embodiments of the present application；
Fig. 6 is a kind of decoded flow diagram of terminal device provided by the embodiments of the present application；
Fig. 7 is a kind of structure diagram of information coding device provided by the embodiments of the present application；
Fig. 8 is a kind of structure diagram of information decoding device provided by the embodiments of the present application；
Fig. 9 is a kind of structure diagram of access network equipment provided by the embodiments of the present application；
Figure 10 is a kind of structure diagram of terminal device provided by the embodiments of the present application.
Specific embodiment
For convenience of subsequent descriptions and clearly the application is illustrated, the concept that may be used to the application first below
It is described briefly：
The method that the application provides is applied to various network systems, and with reference to figure 1, by taking LTE system as an example, which includes connecing
Log equipment (for example, evolved base station (evolved NodeB, eNB)), at least one terminal device, access network equipment with it is every
A terminal device sends mutually the information such as message or data packet, receives direction sender's feedback letter of data packet or message
Breath.The feedback information includes affirmative acknowledgement (acknowledgement, ACK) and negative response (negative
Acknowledgment, NACK).
With reference to figure 2, provide the schematic diagram of a kind of data and feedback channel, with transmitting uplink data, access network equipment to
For multiple terminal devices feedback reception result.In fig. 2, ordinate represents frequency domain, and abscissa represents time domain.Access network equipment
The uplink information from different terminal equipment (such as figure UE0~UE7) is received on different channels or frequency range.Access network equipment connects
After receiving the information for demodulating each terminal device, the demodulation result of each terminal device (UE0~UE7) is fed back in default resource,
Feedback information such as each terminal device includes 1 bit, then 8 terminal devices, which are combined, needs to feed back 8 bit informations.8 bits are believed
The queueing discipline of breath can be set in advance, and the embodiment of the present invention is not related to, and a kind of feasible realization is, according to channel frequency point by low
It is arranged in order to high sequence.
In each embodiment of the application, terminal device can through wireless access network (radio access network,
RAN it) communicates with one or more core nets, terminal device can be mobile terminal, if mobile phone is (or for " honeycomb "
Phone) and with mobile terminal computer, for example, it may be portable, pocket, hand-held, built-in computer or vehicle
The mobile device of load, they exchange language and/or data with wireless access network.For example, personal communication service (personal
Communication service, PCS) phone, wireless phone, Session initiation Protocol (session initiation
Protocol, SIP) phone, wireless local loop (wireless local loop, WLL) stand, personal digital assistant
Equipment such as (personal digital assistant, PDA).Terminal device is referred to as subscriber unit (subscriber
Unit, SU), subscriber station (subscriber station, SS), movement station (mobile station, MS), distant station
(remote station, RS), access point (access point, AP), remote equipment (remote terminal, RT), access
Terminal (access terminal, AT), user terminal (user terminal, UT), user agent (user agent, UA),
User equipment or user equipment (user equipment, UE).The access network equipment can be base station, enhanced base station or
Relaying with scheduling feature or the equipment with base station functions etc..Wherein, base station can be the evolved base in network system
Stand (evolved Node B, eNB), base station that can also be in other systems, and the embodiment of the present application does not limit.
With reference to figure 3, a kind of information coding method is present embodiments provided, using positive and inverse code to feedack is needed to carry out
Coding, specific coding method include the following steps：
Step 301：Access network equipment generates positive and inverse code, and the positive and inverse code includes information bit and after described information position
Check bit, if the number of preset value is even number in described information position, the check bit is each of described information position
It is that bit negates as a result, if the number of preset value is odd number, the check bit and described information position phase in described information position
Together；The preset value can be bit " 1 ", can also be bit " 0 ", and the check bit is used to verify described information position.
Wherein, information bit is used to indicate the reception feelings for the upstream data that the access network equipment sends the terminal device
Condition, the reception condition include affirmative acknowledgement and negative response；Described information position is additionally operable to carry other instruction information, such as wrap
It includes：Carried terminal equipment sends the running time-frequency resource location information of upstream data, and terminal device sends the power information of upstream data,
Terminal device receives running time-frequency resource location information of downlink data etc..
It is devious for carrying information importance using the coding mode that other instruction information are configured in information bit
Content, for example, whether the transmission power of instruction terminal equipment increases, if can cause since the transmission power of terminal device is smaller
If access network equipment can not demodulate, then the information of access network equipment coding is to tend to the increase transmission work(of instruction terminal equipment
Rate.Due to this code encoding/decoding mode it is natural there is skewed popularity, transmitted between terminal device and access network equipment so ensure that
The validity of information.
Step 302：The access network equipment sends the positive and inverse code to terminal device.
The characteristics of positive and inverse code, includes：Can be to generate check bit with check bit according to data, which can entangle
A bit-errors, two bit-errors of detection and the most of mistake of two or more of positive bit sequence.The length and letter of the check bit
It is identical to cease position, i.e., code efficiency is 1/2.For example, information bit be 8 bit informations coding after be generation 16 bit informations.
In a specific embodiment, as described in Figure 4, cataloged procedure includes, and access network equipment is sent out according to terminal device
The upstream data sent wants feedback reception situation.Reception condition includes affirmative acknowledgement ACK, can generally be represented with bit " 1 " and no
Determine response NACK, bit " 0 " can be used to represent.Assuming that the sequence " 11111111 " that information bit is made of 8 bits, wherein 8 ratios
Special information bit corresponds to the uplink reception condition of 8 terminal devices respectively, wherein, the 1st bit corresponding UE #0, the 2nd
Bit corresponding UE #1, and so on." 11111111 " represent the data whole accessed network equipment of corresponding 8 UE of 8 bits
It is properly received.The number of bit " 1 " is 8 in the sequence, is even number, then check bit is each of information bit " 11111111 "
It negates, i.e. " 00000000 ", then the positive and inverse code generated is " 1111111100000000 ".If data sequence is
" 11010011 ", then it represents that the data receiver failure of the 2nd, the 4th and the 5th UE, other UE have correctly received data, further
Detection, the number of bit " 1 " is odd number, then check bit is identical with the information bit, i.e. " 11010011 ", so the positive and inverse code of generation
For " 1101001111010011 ".
Terminal device decodes after the positive and inverse code for receiving access network equipment transmission according to the demodulation rule of positive and inverse code
Bit information (such as 8bits information).In the terminal device that different channels transmit uplink information according to preset queueing discipline, read
Respective feedback information is taken, and judges whether the information received or data packet are correct, and specific decoding process is as follows：
With reference to figure 5, embodiment provides a kind of information decoding method, and this method includes：
Step 501：Terminal device obtains the first positive and inverse code by a series of processing of receiver or transceiver, and described the
One positive and inverse code includes information bit and the check bit after described information position, described information position and the bit number of the check bit
Identical, described information position is used to indicate the reception condition for the upstream data that the access network equipment sends the terminal device,
The reception condition includes affirmative acknowledgement and negative response, and the check bit is used to verify described information position.
Wherein, a series of soft bit that the first positive and inverse code for receiver obtain after processing, is made of bit " 0 " " 1 ",
And first positive and inverse code is identical with the positive and inverse code possibility that access network equipment is sent, it is also possible to differ.
Step 502：The terminal device is according to described information position and check bit generation the first verification formula.
Specifically, terminal device does XOR operation generation to the bit in the reception information bit and the reception check bit
Described first examines formula.For example, the preset value of information bit in the first positive and inverse code is calculated, for example, the number of predetermined bit " 1 ", such as
Fruit number is even number, then generates the second verification formula, the second verification formula is each bit in the first verification formula
The result negated；If the number for receiving bit " 1 " in information bit is odd number, the first verification formula remains unchanged.
Step 503：The terminal device determines whether described information position is correct according to the first verification formula.
Specifically, it is determined that whether the information bit in first positive and inverse code correctly includes following possible situation：
Situation one：If the bit in the first verification formula or the second verification formula is all " 0 ", it is determined that described to receive letter
Breath position is correct, and inerrancy, the terminal device directly reads the data of described information position, and each receives described first just
The terminal device of radix-minus-one complement decides whether to retransmit according to " 0 " or " 1 " of bit corresponding with oneself in information bit.
If information bit instruction be bit " 1 " if represent affirmative acknowledgement ACK, access network equipment is to receiving from eventually
The upstream data parsing of end equipment is correct, at this point, not needing to terminal retransmits upstream data；If information bit instruction is bit
" 0 " then represents negative response NACK, and access network equipment parses mistake to the upstream data of terminal device received, at this point, eventually
End equipment needs to retransmit and the corresponding upstream data of the negative response.
Situation two：If there was only a bit for " 1 " in the first verification formula or the second verification formula, remaining bit
It is " 0 ", it is determined that mistake occurs when being the bit transfer on the check bit of " 1 " corresponding to the bit, described information position passes
Defeated correct, mistake occurs for check bit, but does not influence the deciphering to information bit, so, terminal device can directly read described
The data of information bit, at this point, the reception condition that terminal device is indicated also according to information bit, affirmative acknowledgement ACK or negative response
NACK come determine the need for retransmit upstream data.
Situation three：If there was only a bit for " 0 " in the first verification formula or the second verification formula, remaining bit
When being " 1 ", it is determined that mistake occurs when being the bit transfer in the information bit of " 0 " corresponding to the bit, the terminal is set
It is standby to correct the information bit that mistake occurs, for example, being negated to information bit of the bit for " 0 ", become bit " 1 ",
Then the information bit after correcting is being read.
When being effective data information position or an information bit transmission mistake occurs for three cases above, but after correcting
Effective situation, terminal device can normally read the effective information bit, below the invalid situation in four recommended information position of situation.
Situation four：If the bit of the first verification formula or the second verification formula is not " 0 " or at least two entirely
Position bit is " 1 " or at least two bits are " 0 ", i.e. other all situations other than above-mentioned three kinds of situations, it is determined that
In transmission mistake occurs at least two bits, at this point, described information position is invalid, the terminal device stops reading the letter
Cease position.
Wherein, situation four includes two kinds of possible realizations, and a kind of possible realization is：The feedback of described information position instruction
Situation is negative response NACK, then the terminal device re-transmission and the corresponding upstream data of the negative response, so that connecing
Log equipment can receive correct upstream data.Alternatively possible realization is：Described information position is used to indicate other letters
Breath, for example, indicating that the terminal device sends or receive next time the running time-frequency resource position of downlink data, alternatively, instruction is eventually
End equipment sends power of upstream data etc. again, if terminal device determines that the information bit received is invalid, abandons the nothing
The information bit of effect sends retransmission request according to preset running time-frequency resource position or power work or to the access network equipment,
To reacquire the information of access network equipment transmission.It is wherein, described to refer to according to preset running time-frequency resource position or power work,
Terminal device receives data for the running time-frequency resource position of terminal configuration according to access network equipment before or works as according to terminal device
Preceding power receives upstream data, i.e. terminal device works on according to current working condition.
In a specific embodiment, as shown in fig. 6, by taking 8 bit information positions as an example, terminal device decoding and deterministic process
Including：Assuming that it is " 1111111100000000 " that terminal device, which receives positive and inverse code, reception information bit therein is preceding 8 bits
" 11111111 ", reception check bit are rear 8 bits " 00000000 ", then the first verification formula generated for the reception information bit and
Receive the exclusive or value " 11111111 " of check bit.Then judge to receive before data that the number of " 1 " is odd number or idol in 8 again
It counting, the information bit received in the present embodiment includes even number of bits " 1 " for " 11111111 ", so, negate the second verification of generation
Formula " 00000000 ".Then it is made decisions to the second verification formula, since the bit of the second verification formula is all " 0 ", so,
Information bit or data are correct.
Alternatively, if the number of bit " 1 " is strange in preceding 8 bit in the first positive and inverse code that terminal device obtains
Number, then the first verification formula remains unchanged.The 1st~8 bit of corresponding informance position is distinguished in terminal device #0~7, wherein, setting
Bit " 1 " represents ACK, represents that the upstream data of the terminal device has been correctly received by the terminal, then terminal device is no longer retransmitted.
If bit " 0 ", then the information bit received needs to retransmit upstream data for the terminal device of bit " 0 ".
Alternatively, if the positive and inverse code that receives of terminal device is " 1101001100000000 ", wherein, parsing this just
The information bit that radix-minus-one complement parses is " 11010011 ", and check bit is " 00000000 ", and the information bit and check bit are done exclusive or
Operation generation the first verification formula, which is " 11010011 ", then judges of bit " 1 " in the information bit again
Number, the number of " 1 " is 5 in the information bit " 11010011 ", is odd number, so the first verification formula of generation is kept not
Become, finally judge there are two or more bits for " 0 " in the first verification formula, belong to the range of the above situation four, therefore, terminal is set
It is standby to determine that the information bit is invalid, send retransmission request to access network equipment.
Coding method provided in this embodiment and coding/decoding method, access network equipment have information bit and check bit by setting
Positive and inverse code, and information bit and check bit have certain setting rule, can be with so after recipient receives positive and inverse code
Check code is generated according to the content of positive and inverse code, and passes through check code docking collection of letters breath and makes decisions, the judgement according to positive and inverse code
Criterion reduces the probability that NACK false retrievals are ACK, so as to ensure that system reliability is transmitted.
In addition, terminal device can generate check bit according to the information bit in positive and inverse code and check bit, the check bit
It is whether correct to judge to transmit decoding so as to avoid being further added by cyclic redundancy check for being verified to data information, it saves
Encoding overhead.
Further, in order to ensure the reliability of system transmission, design is only to NACK by probability P of the false retrieval for ACKNACK-ACK
Index be limited, such as less than 0.1%, to ACK by probability P that false retrieval is NACKACK-NACKIt is not limited；It ensure that feedback refers to
Show the correct probability for the information that needs retransmit.
To further improve the accuracy of terminal device judgement, during being encoded in access network equipment side, increase setting
The number of bit " 0 " is more than the number of setting bit " 1 ", since correct probability of the terminal device when detecting bit " 1 " is more than
It detecting " 0 ", so by setting bit " 1 " the information bit, to improve the accuracy and detection speed that judge more.
In another embodiment, in the first positive and inverse code of access network equipment configuration generation, described information position is additionally operable to refer to
Show any one following information：Indicate that the terminal device sends upstream data or receives the running time-frequency resource position of downlink data,
And indicate that the terminal device sends upstream data or receives the information such as the power of upstream data.Pass through the volume of positive and inverse code
Information other than reception condition ACK/NACK is broadcast to each terminal device by code method.
If terminal device determine receive the information bit being used to indicate it is effective, according to it is described instruction information content,
For example, the information such as running time-frequency resource position and power carry out the scheduling of resource of uplink and downlink.If the information bit being used to indicate is invalid
When, then the terminal device abandons described information position or sends retransmission request to the access network equipment.
Further, during generation positive and inverse code is configured in access network equipment, bit " 0 ", " 1 " different groups can be passed through
The information bit of different content is configured in syntype (pattern), to indicate the different information contents.Specific coding process and aforementioned reality
It applies in example that step 301 and step 302 are identical, repeats no more.
Terminal receives and decoded process includes：If it is determined that all bits are all " 0 " in information bit, it is determined that information bit
Correctly, terminal device directly reads the data content of information bit；If it is determined that it is " 1 " or one to have a bit in verification formula
Bit is " 0 ", then corrects a upper mistake transmitted, and read the information bit content after correcting；If there is two or two
More than mistake, then the information bit this time received is invalid, and terminal device abandons the information or request access network equipment retransmits.
Encoding and decoding are carried out by introducing positive and inverse code in the present embodiment, are carried out at the same time amendment and judgement decoded, further
Improve decoding correct probability and code efficiency.
It should be noted that work as letter during decoding determines whether information bit is effective in each embodiment of the application
The number of preset value meets preset condition in breath position, for example, preset value number of bits is even number, needs to generate the second verification formula
When, just determine whether described information position is correct using the second verification formula；If you do not need to generation the second verification formula, then need to only lead to
It crosses the first verification formula and carries out verification of correctness.
Referring to Fig. 7, embodiment provides a kind of information coding device, including Transmit-Receive Unit 701 and processing unit 702, removes
Outside the Transmit-Receive Unit 701 and processing unit 702, described information code device can including storage unit etc. other unit moulds
Block.
In one embodiment, processing unit 702, for generating positive and inverse code, the positive and inverse code includes information bit and is located at
Check bit after described information position, described information position be used to indicate the access network equipment terminal device is sent it is upper
The reception condition of row data, the reception condition include affirmative acknowledgement and negative response；The check bit be used for information bit into
Row verification, Transmit-Receive Unit 701, for sending the positive and inverse code.
Wherein, the positive and inverse code that processing unit 702 generates meets following rule：If the number of preset value in described information position
For even number, if then the check bit for each bit of described information position negate as a result, preset value in described information position
Number for odd number, then the check bit is identical with described information position.
In addition, the processing unit 702, which is additionally operable to configuration described information position, carries following at least one information：The terminal
Equipment sends the running time-frequency resource location information of upstream data, and terminal device sends the power information of upstream data, and terminal device connects
Receive running time-frequency resource location information of downlink data etc..
The present embodiment provides information coding devices, and the decision rule according to positive and inverse code, which can obtain, preferably reduces NACK
False retrieval is the probability of ACK, ensures system reliability transmission.In addition, information coding device is made by configuration information position and check bit
Receiving device can check bit can be generated according to the information bit in positive and inverse code and check bit, the check bit be used for logarithm it is believed that
Whether breath is verified, correct to judge to transmit decoding so as to avoid being further added by cyclic redundancy check, has saved encoding overhead.
Referring to Fig. 8, embodiment provides a kind of information decoding device, including Transmit-Receive Unit 801 and processing unit 802, removes
Outside the Transmit-Receive Unit 801 and processing unit 802, described information decoding apparatus can including storage unit etc. other unit moulds
Block.
In one embodiment, for Transmit-Receive Unit 801 for obtaining the first positive and inverse code, first positive and inverse code includes information bit
With the check bit after described information position, described information position is identical with the bit number of the check bit, and described information position is used
In the reception condition of upstream data that the instruction access network equipment sends the terminal device, the reception condition includes agreeing
Determine response and negative response, the check bit is used to verify described information position；Processing unit 802 be used for according to described information position and
Check bit generation first verification formula and, determine whether described information position correct according to the first verification formula.
Optionally, the processing unit 802, if the number for being specifically additionally operable to preset value in described information position is even number,
The second verification formula is then generated, and determines whether described information position is correct using the second verification formula, second school
Test the result that formula is negated for each bit in the first verification formula；If the number of preset value is odd number in information bit,
The first verification formula remains unchanged.
Optionally, the processing unit 802, if being additionally operable to the ratio in the first verification formula or the second verification formula
Spy is all " 0 ", it is determined that described information position is correct, and directly reads the data of described information position.
If only a bit is " 1 " in the first verification formula or the second verification formula, it is determined that corresponding to institute
Mistake occurs when stating the bit transfer on the check bit that bit is " 1 ", the transmission of described information position is correct, and directly reads the letter
Cease the data of position.
If only a bit is " 0 " in the first verification formula or the second verification formula, it is determined that corresponding to institute
Mistake occurs when stating the bit transfer in the information bit that bit is " 0 ", and corrects the information bit that mistake occurs and reads
Information bit after the correction.
If the bit of the first verification formula or the second verification formula is not " 0 " or at least two bits entirely
For " 1 " or at least two bits are " 0 ", it is determined that in transmission mistake, described information position occur at least two bits
In vain, and stop reading described information position.
Optionally, the processing unit 802, if be additionally operable to, described information position is correct or described information position is repaired
Afterwards effectively, and the reception condition of the upstream data of described information position instruction is negative response, then retransmits and the negative response phase
Corresponding upstream data.
If described information position is correct or described information position is repaired afterwards effectively, and described information position is used to indicate institute
The running time-frequency resource position of terminal device is stated, alternatively, instruction sends or receives power, then according to the instruction work of described information position.
If described information position is invalid, and the invalid information bit is used to indicate terminal device and is sent to access network equipment
Upstream data reception condition, then retransmit the upstream data.
If described information position is invalid, and the invalid information bit is used to indicate the running time-frequency resource position of the terminal device
It puts, alternatively, instruction sends the power of upstream data, then the terminal device abandons described information position, is provided according to preset time-frequency
Source position or power work send retransmission request to access network equipment.
Referring to Fig. 9, the embodiment of the present application provides a kind of access network equipment.The access network equipment can be previous embodiment
In information coding device or miscellaneous equipment comprising the information coding device, be used to implement in previous embodiment
Method and step.
As shown in figure 9, the access network equipment that the application provides includes transceiver 901, processor 902, memory 903 and leads to
Believe bus 904, transceiver 901 can include the components such as at least one communication interface and I/O interfaces.Access network equipment can also wrap
It includes more or fewer components and either combines certain components or different components arrangement, the application is to this without limiting.
Processor 902 is the control centre of access network equipment, utilizes various interfaces and the entire access network equipment of connection
Various pieces, by run or perform the software program being stored in memory 903 and/or module and call be stored in
Data in memory, to perform the various functions of access network equipment and/or processing data.The processor 902 can be by collecting
It forms, such as can be made of the IC of single encapsulation into circuit (integrated circuit, IC), it can also be more by connecting
The encapsulation IC of identical function or different function and form.For example, processor can only include central processing unit
(central processing unit, CPU) or GPU, digital signal processor (digital signal
Processor, DSP) and control chip (such as baseband chip) in transceiver combination.In the application embodiment,
CPU can be single operation core, can also include multioperation core.
Transceiver 901 makes access network equipment be set by the communication channel to be connected to reception for establishing communication channel
It is standby, so as to fulfill the reception of the information such as the positive and inverse code transmission between terminal device and data.Transceiver 901 includes receiving
Module is sent out, transceiver module can include WLAN (wireless local area network, WLAN) module, bluetooth
Communication modules and the corresponding radio frequency (radio of the communication module such as module, base band (base band) module
Frequency, RF) circuit, for carrying out WLAN communication, Bluetooth communication, infrared communication and/or cellular communication
System communicates, such as wideband code division multiple access (wideband code division multiple access, WCDMA)
And/or high-speed downstream packet access (high speed downlink packet access, HSDPA).The transceiver module can
For the communication of each component in control terminal equipment, and it can support direct memory access (direct memory
access)。
In access network equipment provided in this embodiment, the function to be realized of transceiver 901 can be by compiling with information
The transceiver 901 that the Transmit-Receive Unit 701 of code function is realized or controlled by processor 902 is realized；Processor 902 to be realized
Function can then be realized by processing unit 702.
Referring to Figure 10, the embodiment of the present application additionally provides a kind of terminal device.The terminal device can be aforementioned arbitrary reality
The step of applying the user equipment in example or other network side equipments, being used to implement information decoding method in previous embodiment.
Wherein, terminal device can be by 1004 groups of transceiver 1001, processor 1002, memory 1003 and communication bus
Into.Transceiver 1001 includes the components such as at least one communication interface and I/O interfaces, the terminal device can also include it is more or
Less component either combines certain components or different components arrangement, and the application is to this without limiting.
Processor 1002 is the control centre of terminal device, is decoded for the positive and inverse code to acquisition, and is determined positive and negative
Whether the information bit in code is correct.Using the various pieces of various interfaces and connection whole network side apparatus, pass through operation
Or perform the software program being stored in memory and/or module and call the data being stored in memory, to perform net
The various functions of network side apparatus and/or processing data.Processor can be central processing unit (central processing
Unit, CPU), the combination of network processing unit (network processor, NP) or CPU and NP.Processor can also be into one
Step includes hardware chip.The hardware chip can be application-specific integrated circuit (application-specific integrated
Circuit, ASIC), programmable logic device (programmable logic device, PLD) or combination.Above-mentioned PLD can
To be Complex Programmable Logic Devices (complex programmable logic device, CPLD), field programmable logic
Gate array (field-programmable gatearray, FPGA), Universal Array Logic (generic array logic,
GAL) or it is arbitrarily combined.
Memory 1003 can include volatile memory (volatile memory), such as random access memory
(random accessmemory, RAM)；It can also include nonvolatile memory (non-volatile memory), such as
Flash memory (flash memory), hard disk (hard disk drive, HDD) or solid state disk (solid-state
Drive, SSD)；Memory can also include the combination of the memory of mentioned kind.It can have program stored therein in the memory
Or code, processor can realize the function of the terminal device by performing described program or code.
Transceiver 1001 can be used for receive access network equipment send positive and inverse code and access network equipment issue it is other
Information.
In the embodiment of the present application, transceiver can be used to implement all steps of the information decoding method in previous embodiment
Suddenly.Wherein, receive access network equipment send positive and inverse code can be realized by the transceiver 1001 of the terminal device or by
The transceiver 1001 that reason device 1002 controls is realized；The function of Transmit-Receive Unit 801 can also be by terminal in aforementioned information decoding apparatus
The transceiver 1001 of equipment is realized or can also be realized by the transceiver 1001 that processor 1002 controls；Processing unit
802 functions to be realized can then be realized by processor 1002.
In the present embodiment, access network equipment is by positive and inverse code of the setting with information bit and check bit, and information bit and
Check bit has certain setting rule, so after terminal device receives the positive and inverse code of access network equipment transmission, it can
Parsing generation check code, and pass through check code docking collection of letters breath and make decisions, it avoids, using existing coding mode, accessing net
Equipment needs increase cyclic redundancy check to judge the correctness of information transmission, has saved transport overhead, and sentencing according to positive and inverse code
Certainly criterion also reduces the probability of ACK or NACK false retrievals, improves the reliability of information transmission
In addition, the application also provides a kind of computer storage media, wherein, which can be stored with journey
Sequence, the program may include the part or complete in each embodiment of the information coding method of the application offer, coding/decoding method when performing
Portion's step.The storage medium can be magnetic disc, CD, read-only memory (read-only memory, ROM) or random
Storage memory (random access memory, RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present application can add by software
The mode of general hardware platform realize.Based on such understanding, the technical solution in the embodiment of the present application substantially or
It says and the part that the prior art contributes can be embodied in the form of software product, which can deposit
Storage is in storage medium, such as ROM/RAM, magnetic disc, CD, and being used including some instructions (can be with so that computer equipment
Be personal computer, server either network equipment etc.) perform certain part institutes of each embodiment of the application or embodiment
The method stated.
Just to refer each other for identical similar part between each embodiment in this specification.Implement especially for equipment
For example, since it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring in embodiment of the method
Explanation.
Above-described the application embodiment does not form the restriction to the application protection domain.
Claims (22)
1. a kind of information coding method, which is characterized in that method includes：
Access network equipment generates positive and inverse code, and the positive and inverse code includes information bit and the check bit after described information position, such as
The number of preset value is even number in fruit described information position, then each bit knot that negates of the check bit for described information position
Fruit, if the number of preset value is odd number in described information position, the check bit is identical with described information position, described information position
The reception condition for the upstream data that the access network equipment sends the terminal device is used to indicate, the reception condition includes
Affirmative acknowledgement and negative response, the check bit are used to verify described information position；
The access network equipment sends the positive and inverse code.
2. according to the method described in claim 1, it is characterized in that, described information position is additionally operable to indicate following at least one letter
Breath：
The terminal device sends the running time-frequency resource position of upstream data；
The terminal device sends the power of upstream data；
The terminal device receives the running time-frequency resource position of downlink data.
3. a kind of information decoding method, which is characterized in that method includes：
Terminal device obtains the first positive and inverse code, and first positive and inverse code includes information bit and the supervision after described information position
Position, described information position is identical with the bit number of the check bit, and described information position is used to indicate access network equipment to the terminal
The reception condition for the upstream data that equipment is sent, the reception condition include affirmative acknowledgement and negative response, and the check bit is used
In verification described information position；
The terminal device is according to described information position and check bit generation the first verification formula；
The terminal device determines whether described information position is correct according to the first verification formula.
4. according to the method described in claim 3, it is characterized in that, the terminal device is given birth to according to described information position and check bit
Include into the first verification formula：
XOR operation is done to the bit in described information position and the check bit and generates the first inspection formula.
5. according to the method described in claim 3, it is characterized in that, described information position is additionally operable to indicate following at least one letter
Breath：
The terminal device sends the running time-frequency resource position of upstream data；
The terminal device sends the power of upstream data；
The terminal device receives the running time-frequency resource position of downlink data.
6. according to claim 3 to 5 any one of them method, which is characterized in that the terminal device is according to described information position
The first verification formula is generated with check bit to include：
If the number of preset value is even number in described information position, generation second verifies formula, and uses the described second verification formula
Determine whether described information position is correct, the second verification formula is the knot that each bit negates in the first verification formula
Fruit；
If the number of preset value is odd number in information bit, the first verification formula remains unchanged.
7. according to the method described in claim 6, it is characterized in that, the terminal device determines institute according to the first verification formula
State whether information bit correctly includes：
If the bit in the first verification formula or the second verification formula is all " 0 ", it is determined that described information position is correct, institute
State the data that terminal device directly reads described information position；
If only a bit is " 1 " in the first verification formula or the second verification formula, it is determined that corresponding to the ratio
Mistake occurs during specially for bit transfer on the check bit of " 1 ", the transmission of described information position is correct, and the terminal device is directly read
The data of described information position；
If only a bit is " 0 " in the first verification formula or the second verification formula, it is determined that corresponding to the ratio
Mistake occurs during specially for bit transfer in the information bit of " 0 ", the terminal device corrects the information bit that mistake occurs, and
Read the information bit after the correction；
If the bit of the first verification formula or the second verification formula is not " 0 " entirely or at least two bits are
" 1 " or at least two bits are " 0 ", it is determined that in transmission mistake, described information position nothing occur at least two bits
Effect, the terminal device stop reading described information position.
8. the method according to the description of claim 7 is characterized in that method further includes,
If described information position is correct or described information position is repaired afterwards effectively, and the upstream data of described information position instruction
Reception condition for negative response, then the terminal device retransmits the upstream data.
9. the method according to the description of claim 7 is characterized in that method further includes,
If described information position is correct or described information position is repaired afterwards effectively, and described information position is used to indicate the end
The running time-frequency resource position of end equipment, alternatively, instruction sends the power of upstream data, then the terminal device is according to described information position
Instruction work.
10. the method according to the description of claim 7 is characterized in that method further includes,
If described information position is invalid, and the invalid information bit be used to indicate terminal device sent to access network equipment it is upper
The reception condition of row data, then the terminal device retransmit the upstream data.
11. the method according to the description of claim 7 is characterized in that method further includes,
If described information position is invalid, and the invalid information bit is used to indicate the running time-frequency resource position of the terminal device,
Alternatively, instruction send upstream data power, then the terminal device according to preset running time-frequency resource position or power work or
Person sends retransmission request to the base station access network equipment.
12. a kind of access network equipment, which is characterized in that including：
Processor, for generating positive and inverse code, the positive and inverse code includes information bit and the check bit after described information position, such as
The number of preset value is even number in fruit described information position, then each bit knot that negates of the check bit for described information position
Fruit, if the number of preset value is odd number in described information position, the check bit is identical with described information position, described information position
The reception condition for the upstream data that the access network equipment sends the terminal device is used to indicate, the reception condition includes
Affirmative acknowledgement and negative response, the check bit are used to verify described information position；
Transceiver, for sending the positive and inverse code.
13. access network equipment according to claim 12, which is characterized in that it is following at least that described information position is additionally operable to instruction
A kind of information：
The terminal device sends the running time-frequency resource position of upstream data；
The terminal device sends the power of upstream data；
The terminal device receives the running time-frequency resource position of downlink data.
14. a kind of terminal device, which is characterized in that including：
Transceiver, for obtaining the first positive and inverse code, first positive and inverse code includes information bit and after described information position
Check bit, described information position is identical with the bit number of the check bit, and described information position is used to indicate access network equipment to described
The reception condition for the upstream data that terminal device is sent, the reception condition include affirmative acknowledgement and negative response, the supervision
Position is used to verify described information position；
Processor, for according to described information position and check bit generation the first verification formula；
The processor is additionally operable to determine whether described information position is correct according to the first verification formula.
15. terminal device according to claim 14, which is characterized in that
The processor is additionally operable to do the bit in described information position and the check bit XOR operation generation first inspection
Test formula.
16. terminal device according to claim 14, which is characterized in that described information position is additionally operable to instruction following at least one
Kind information：
The terminal device sends the running time-frequency resource position of upstream data；
The terminal device sends the power of upstream data；
The terminal device receives the running time-frequency resource position of downlink data.
17. according to claim 14 to 16 any one of them terminal device, which is characterized in that
The processing implement body is additionally operable to, if the number of preset value is even number in described information position, generation second verifies formula,
And determining whether described information position is correct using the second verification formula, the second verification formula is in the first verification formula
The result that each bit negates；
If the number of preset value is odd number in information bit, the first verification formula remains unchanged.
18. terminal device according to claim 17, which is characterized in that
The processor is additionally operable to, if the bit in the first verification formula or the second verification formula is all " 0 ", it is determined that
Described information position is correct, and directly reads the data of described information position；
If only a bit is " 1 " in the first verification formula or the second verification formula, it is determined that corresponding to the ratio
Mistake occurs during specially for bit transfer on the check bit of " 1 ", the transmission of described information position is correct, and directly reads described information position
Data；
If only a bit is " 0 " in the first verification formula or the second verification formula, it is determined that corresponding to the ratio
Mistake occurs during specially for bit transfer in the information bit of " 0 ", and corrects the information bit that mistake occurs and described in reading
Information bit after correction；
If the bit of the first verification formula or the second verification formula is not " 0 " entirely or at least two bits are
" 1 " or at least two bits are " 0 ", it is determined that in transmission mistake, described information position nothing occur at least two bits
Effect, and stop reading described information position.
19. terminal device according to claim 18, which is characterized in that
The processor is additionally operable to, if described information position is correct or described information position is repaired afterwards effectively, and described information
The reception condition of the upstream data of position instruction is negative response, then retransmits the upstream data.
20. terminal device according to claim 18, which is characterized in that
The processor is additionally operable to, if described information position is correct or described information position is repaired afterwards effectively, and described information
Position is used to indicate the running time-frequency resource position of the terminal device, alternatively, instruction sends the power of upstream data, then according to the letter
Cease the instruction work of position.
21. terminal device according to claim 18, which is characterized in that
The processor is additionally operable to, if described information position is invalid, and the invalid information bit be used to indicate terminal device to
The reception condition for the upstream data that access network equipment is sent, then retransmit the upstream data.
22. terminal device according to claim 18, which is characterized in that
If described information position is invalid, and the invalid information bit is used to indicate the running time-frequency resource position of the terminal device,
Alternatively, instruction sends the power of upstream data, then the processor is additionally operable to indicate the terminal device according to preset time-frequency
Resource location or power work or the instruction transceiver send retransmission request to the access network equipment.
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