CN103986553B - The stop-and-wait transmission method of suitable physical layer no rate coding transmission - Google Patents
The stop-and-wait transmission method of suitable physical layer no rate coding transmission Download PDFInfo
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Abstract
The invention discloses a kind of stop-and-wait transmission method of suitable physical layer no rate coding transmission.Packet is first produced enough coding bags through no rate coding by transmitting terminal, then coding bag is split into multiple coding enclosed mass and is packaged into subframe one by one.Transmitting terminal often sends a subframe, then detection channel receives ACK.If receiving new subframe during decoding, it is added into decoder joint decoding.If successfully decoded, feeding back ACK during channel idle is detected；Otherwise, new subframe is waited to add decoding.This transmission method can be very good to play the channel self-adapting of no-rate codes, transmission code rate adaptive change with the change of channel circumstance, and is easily achieved the no rate coding transmission it is adaptable under half- or full-duplex pattern.
Description
Technical field
The present invention relates to the chnnel coding of the communications field and transmission technology, more particularly, to a kind of suitable physical layer no speed volume
The stop-and-wait transmission method of code transmission.
Background technology
The basic object of communication system be by information by information source efficiently, reliable, be safely transmitted to the stay of two nights.Thanks for your hospitality communication
Noise in channel inevitably can produce different degrees of interference to transmission information, consequently, it is possible to reducing communication reliability.
So the key problem of Communication System Design is exactly how to overcome interference in the channel exist random noise, reduce information transfer
Mistake, the efficiency of again guarantee information transmission simultaneously.In order to overcome the interference of various noises in channel, there has been proposed error correction is compiled
The method of code is to realize transmitting.Before Shannon, people think that the rate of information throughput increasing channel always causes mistake
It is believed that error probability to be made is zero, then transfer rate is only zero for the increase of probability by mistake.1948, Shannon established theory of information,
Research for Error Correction of Coding specifies direction.Shannon proposes, and each channel can be gone out according to its noise jamming property calculation
Its capacity C, all speed R less than channel capacity C be all up to, that is, work as R<During C, always there are a series of codes, work as code lengthWhen, maximum bit error probability tends to 0.This theoretical creative having overturned with regard to people for the understanding communicating, and seek
The encoding scheme approaching shannon limit being capable of practical application is looked for also just to become the final goal of Coding Theory.
Since self-channel coding theorem proposes, how to construct a practicality approaching channel capacity limit and be encoded into numerous grinding
Study carefully the problem that scholar mutually studies unexpectedly, and gradually form an information-theoretical important branch channel coding theorem.Several more than ten years
Come, by numerous scholars, more particularly to the research worker joint efforts of more than 50 year of mathematics and theory of information academia, at present
Have been achieved for a lot of achievements.As quite ripe linear block codes, encoder has a convolutional code of memory, 1993 by
Berror, Glavieux and Thitimajashia propose with shannon limit only poor several decibels of Turbo code, occur afterwards
Another kind can approach low-density checksum LDPC code of shannon limit etc..
But these chnnel codings, in design, generally first estimate channel parameter according to channel condition information, according to channel
One code check of parameter designing is fixed as the channel error correction coding of R（N output symbol is obtained by k incoming symbol, then code check is）.When the channel parameter estimated is more than actual channel parameter although transmitting can be realized, but cause
The waste of transmission, because now can use the channel error correction coding of higher code check；When the channel parameter estimated is less than reality
Channel parameter when it is impossible to realize transmitting, now need the channel error correction of more low bit- rate to encode.And many times, letter
Road still changes at any time or cannot judge in advance, and these traditional codings just seemed and were difficult to deal with this when.Then go out
The variable no-rate codes of code check are showed.For no-rate codes, cataloged procedure is as by the coded data packet that initial data produces
And continually produce, the amount doesn't matter according to the needs of decoding, as long as guaranteeing decoding success.The code check of actual transmissions
Depend on the actual coding bag number sending, and need the coding bag number sending then depending on channel conditions at that time.
No-rate codes have three important attribute：1) adaptive link rate adaptation：Its final speed is decided by that channel is special
Property it is not necessary to estimate the characteristic of channel and cbr (constant bit rate) before transmission, the code check of actual transmissions depends on channel conditions at that time.
2) no rate attribute（Stream attribute）：Transmitting terminal can endlessly exports coding bag, forming one can be with the volume of Hold
Code packet stream, without any rate constraint；3) bucket hydrops effect：Receiving terminal constantly collects coding bag, collects enough volumes
Code bag can recover all raw data packets.Just because of no-rate codes three important attribute so as in broadcast channel, recognize
Know, network transmission, the various aspects such as larger communication situation of feedback cost are with a wide range of applications.
The application in systems in practice with regard to no-rate codes at present, is concentrated mainly on the transmission of more than physical layer.And for
In physical layer, blank out, the communication environment being especially continually changing in channel are almost using the application that no rate coding transmits
Under.
Content of the invention
The purpose of the present invention is for the deficiencies in the prior art, provides a kind of stopping of suitable physical layer no rate coding transmission
Equation transmission method.
The purpose of the present invention is achieved through the following technical solutions：The present invention is suitable for physical layer no rate coding transmission
Stop-and-wait transmission method, packet is first produced coding bag through no rate coding by its transmitting terminal, then splits into coding bag
Multiple coding enclosed mass are simultaneously packaged into subframe one by one.Transmitting terminal often sends a subframe, then detection channel receives ACK.If one
Do not receive ACK in the fixed time, then send next subframe, detect channel again；If receiving ACK, to next data
Bag carries out no rate coding and subframe encapsulation, sends the subframe of next packet.Receiving terminal just starts after receiving a subframe
Non-rate decoding.If receiving new subframe during decoding, it is added into decoder joint decoding.If successfully decoded,
Feeding back ACK when channel idle is then detected；Otherwise, new subframe is waited to add decoding.The inventive method includes the place of transmitting terminal
Reason method and the processing method of receiving terminal.
If when transmitting terminal has subframe to need to send, SendFlag is 1.Transmitting terminal is introduced into CS state-detection channel.As
Fruit channel idle is detected and SendFlag is 1, then enter TX state, send subframe.If letter is detected during CS
Number, then enter RX state receipt signal.If the ACK frame of receiving terminal feedback, then return to CS state after having processed ACK and prepare
Send the subframe of new packet；Otherwise, it is returned directly to CS state to continue waiting for ACK or continue to send current message package
Subframe.If the coding bag of a packet is split as N number of subframe by transmitting terminal, then the specific process step of transmitting terminal is as follows：
A () transmitting terminal reads a certain size packet, packet is carried out no rate coding；
B () splits into encoding bag N section and is packaged into N number of subframe；
C () enters Channel Detection.If channel idle, enter step (d)；If signal is detected, enter step
(e)；
D () sends jth work song frame, and sub-frame counter j is added 1.If j is equal to N-1, by j zero setting, more again next time
Send 0 work song frame；Otherwise next time sends new subframe.
E () receipt signal simultaneously demodulates, determine whether the ACK of current data packet.If it is, release current data packet
Sub-frame data, return to step (a)；If it is not, return to step (c).
If when receiving terminal has ACK to need to send, AckFlag is not 0.Receiving terminal is introduced into CS state-detection channel, if
Channel idle is detected and AckFlag is not 0, then enter TX state and send ACK frame；If signal is detected, enter RX state
Receipt signal.If signal is the subframe of the message package currently decoding, subframe demodulation is added decoding；Otherwise return CS shape
State continues detection signal.The specific process step of receiving terminal is as follows：
A () receiving terminal detects channel.If signal is detected, enter step (b)；If channel idle is detected, enter step
(c)；
B the frame head demodulation of subframe is first translated by (), and judge the message package mark of this subframe.If current message package
Subframe, then demodulate the data division of this subframe, and adds decoder to enter row decoding the data after demodulation；If this subframe is
The subframe of a upper message package is then it is assumed that last ACK sends unsuccessfully, then resends the ACK of a message package, will
AckFlag is set to 2.Return to step (a)；
C () determines whether that ACK needs to send.If AckFlag is 1, send the ACK of current message bag；If AckFlag
For 2, then send the ACK of a message package；Otherwise, return (a)；
D while detection signal, decoding is also being carried out () receiving terminal.If decoding terminates, carry out CRC check.If CRC
Verification is correct, then AckFlag is put 1；Otherwise empty decoding data, wait new subframe to continue decoding.
Further, transmitting terminal waits the timeout threshold value of ACK to add reception for the propagation delay time of transmitting terminal to receiving terminal
End harvests the time delay maximum of a subframe.
The invention has the beneficial effects as follows：This transmission method can be very good to play the channel self-adapting of no-rate codes, passes
Defeated code check with the change of channel and adaptive change, and very robust, it is easy to accomplish it is not necessary to the control method of complexity,
It is applied to the no rate coding transmission under half-duplex and full-duplex mode.
Brief description
Fig. 1 is the state machine diagram being suitable for transmitting terminal under the physical layer no stop-and-wait transmission method of rate coding transmission；
Fig. 2 is the state machine diagram being suitable for receiving terminal under the physical layer no stop-and-wait transmission method of rate coding transmission；
Fig. 3 is that the handling process being suitable for transmitting terminal under the physical layer no stop-and-wait transmission method of rate coding transmission is illustrated
Figure；
Fig. 4 is that the handling process being suitable for receiving terminal under the physical layer no stop-and-wait transmission method of rate coding transmission is illustrated
Figure.
Fig. 5 is the transmitting procedure schematic diagram being suitable for the physical layer no stop-and-wait transmission method of rate coding transmission.
Specific embodiment
Further illustrate the present invention below in conjunction with Fig. 1-5.
The present invention is suitable for the stop-and-wait transmission method of physical layer no rate coding transmission, and packet is first passed through by its transmitting terminal
No rate coding produces coding bag, then coding bag is split into multiple coding enclosed mass and is packaged into subframe one by one.Transmitting terminal
Often send a subframe, then detection channel receives ACK.If not receiving ACK within the regular hour, send next height
Frame, detects channel again；If receiving ACK, next packet being carried out with no rate coding and subframe encapsulation, sends next
The subframe of packet.Receiving terminal just starts non-rate decoding after receiving a subframe.If receiving new son during decoding
Frame, then be added into decoder joint decoding.If successfully decoded, feeding back ACK during channel idle is detected；Otherwise, wait newly
Subframe add decoding.The inventive method includes the processing method of transmitting terminal and the processing method of receiving terminal.
If when transmitting terminal has subframe to need to send, SendFlag is 1.Transmitting terminal is introduced into CS state-detection channel.As
Fruit channel idle is detected and SendFlag is 1, then enter TX state, send subframe.If letter is detected during CS
Number, then enter RX state receipt signal.If the ACK frame of receiving terminal feedback, then return to CS state after having processed ACK and prepare
Send the subframe of new packet；Otherwise, it is returned directly to CS state to continue waiting for ACK or continue to send current message package
Subframe.If the coding bag of a packet is split as N number of subframe by transmitting terminal, then the specific process step of transmitting terminal is as follows：
A () transmitting terminal reads a certain size packet, packet is carried out no rate coding；
B () splits into encoding bag N section and is packaged into N number of subframe；
C () enters Channel Detection.If channel idle, enter step (d)；If signal is detected, enter step
(e)；
D () sends jth work song frame, and sub-frame counter j is added 1.If j is equal to N-1, by j zero setting, more again next time
Send 0 work song frame；Otherwise next time sends new subframe.
E () receipt signal simultaneously demodulates, determine whether the ACK of current data packet.If it is, release current data packet
Sub-frame data, return to step (a)；If it is not, return to step (c).
If when receiving terminal has ACK to need to send, AckFlag is not 0.Receiving terminal is introduced into CS state-detection channel, if
Channel idle is detected and AckFlag is not 0, then enter TX state and send ACK frame；If signal is detected, enter RX state
Receipt signal.If signal is the subframe of the message package currently decoding, subframe demodulation is added decoding；Otherwise return CS shape
State continues detection signal.The specific process step of receiving terminal is as follows：
A () receiving terminal detects channel.If signal is detected, enter step (b)；If channel idle is detected, enter step
(c)；
B the frame head demodulation of subframe is first translated by (), and judge the message package mark of this subframe.If current message package
Subframe, then demodulate the data division of this subframe, and adds decoder to enter row decoding the data after demodulation；If this subframe is
The subframe of a upper message package is then it is assumed that last ACK sends unsuccessfully, then resends the ACK of a message package, will
AckFlag is set to 2.Return to step (a)；
C () determines whether that ACK needs to send.If AckFlag is 1, send the ACK of current message bag；If AckFlag
For 2, then send the ACK of a message package；Otherwise, return (a)；
D while detection signal, decoding is also being carried out () receiving terminal.If decoding terminates, carry out CRC check.If CRC
Verification is correct, then AckFlag is put 1；Otherwise empty decoding data, wait new subframe to continue decoding.
Further, transmitting terminal waits the timeout threshold value of ACK to add reception for the propagation delay time of transmitting terminal to receiving terminal
End harvests the time delay maximum of a subframe.
Claims (2)
1. the stop-and-wait transmission method being suitable for physical layer no rate coding transmission is it is characterised in that packet is first passed through by transmitting terminal
No rate coding produces coding bag, then coding bag is split into multiple coding enclosed mass and is packaged into subframe one by one, transmitting terminal
Often send a subframe, then detection channel receives ACK, if not receiving ACK within the regular hour, sends next height
Frame, detects channel again；If receiving ACK, next packet being carried out with no rate coding and subframe encapsulation, sends next
The subframe of packet, receiving terminal just starts non-rate decoding after receiving a subframe, if receiving new son during decoding
Frame, then be added into decoder joint decoding, if successfully decoded, feeding back ACK during channel idle is detected；Otherwise, wait newly
Subframe add decoding, the inventive method includes the processing method of transmitting terminal and the processing method of receiving terminal；
If when transmitting terminal has subframe to need to send, SendFlag is 1, and transmitting terminal is introduced into CS state-detection channel, if inspection
Measure channel idle and SendFlag is 1, then enter TX state, send subframe, if signal is detected during CS,
Enter RX state receipt signal, if the ACK frame of receiving terminal feedback, then return to CS state after having processed ACK and be ready for sending
The subframe of new packet；Otherwise, it is returned directly to CS state to continue waiting for ACK or continue to send the son of current message package
Frame, if the coding bag of a packet is split as N number of subframe by transmitting terminal, then the specific process step of transmitting terminal is as follows：
(a1) transmitting terminal reads a certain size packet, and packet is carried out no rate coding；
(b1) coding bag is split into N section and is packaged into N number of subframe；
(c1) enter Channel Detection, if channel idle, enter step (d1)；If signal is detected, enter step
(e1)；
(d1) send jth work song frame, and sub-frame counter j is added 1, if j is equal to N-1, j zero setting is sent out again next time again
Send 0 work song frame；Otherwise next time sends new subframe；
(e1) receipt signal demodulating, determines whether the ACK of current data packet, if it is, the son of release current data packet
Frame data, return to step (a1)；If it is not, return to step (c1)；
If when receiving terminal has ACK to need to send, AckFlag is not 0, and receiving terminal is introduced into CS state-detection channel, if detection
To channel idle and AckFlag is not 0, then enter TX state and send ACK frame；If signal is detected, entering RX state and receiving
Signal, if signal is the subframe of the message package currently decoding, subframe demodulation is added decoding；Otherwise return CS state to continue
Continuous detection signal, the specific process step of receiving terminal is as follows：
(a2) receiving terminal detection channel, if signal is detected, enters step (b2)；If channel idle is detected, enter step
(c2)；
(b2) first the frame head demodulation of subframe is translated, and judge the message package mark of this subframe, if current message steamed bun
Frame, then demodulate the data division of this subframe, and adds decoder to enter row decoding the data after demodulation；If on this subframe is
The subframe of one message package is then it is assumed that last ACK sends unsuccessfully, then resends the ACK of a message package, will
AckFlag is set to 2, return to step (a2)；
(c2) determine whether that ACK needs to send, if AckFlag is 1, send the ACK of current message bag；If AckFlag is
2, then send the ACK of a message package；Otherwise, return (a2)；
(d2) while detection signal, decoding is also being carried out receiving terminal, if decoding terminates, carries out CRC check, if CRC school
Test correct, then AckFlag is put 1；Otherwise empty decoding data, wait new subframe to continue decoding.
2. suitable physical layer according to claim 1 no rate coding transmission stop-and-wait transmission method it is characterised in that
Transmitting terminal waits the timeout threshold value of ACK to harvest a subframe for the propagation delay time of transmitting terminal to receiving terminal plus receiving terminal
Time delay maximum.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179279A (en) * | 2007-11-27 | 2008-05-14 | 浙江大学 | Non-rate code coding/decoding method fit for additive white Gaussian noise channel |
| CN101325461A (en) * | 2008-07-25 | 2008-12-17 | 浙江大学 | Method for establishing and maintaining cognition radio communication link based on non-speed code |
| EP2122884A1 (en) * | 2006-12-14 | 2009-11-25 | Thomson Licensing | Rateless encoding in communication systems |
| CN101645753A (en) * | 2009-09-03 | 2010-02-10 | 电子科技大学 | Coding method without rate codes |
| CN101742570A (en) * | 2009-12-29 | 2010-06-16 | 浙江大学 | Distributed packet access method based on no-rate codes in cognitive radio |
| CN102324998A (en) * | 2011-05-11 | 2012-01-18 | 浙江大学 | Raptor Codes encoding/decoding method suitable for medium/short code lengths of additive white Gaussian noise channel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7515565B2 (en) * | 2005-05-09 | 2009-04-07 | Kyocera Corporation | Multiple source wireless communication system and method |
| KR101355306B1 (en) * | 2006-12-14 | 2014-01-23 | 톰슨 라이센싱 | Concatenated coding/decoding in communication systems |
-
2014
- 2014-04-04 CN CN201410135143.3A patent/CN103986553B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2122884A1 (en) * | 2006-12-14 | 2009-11-25 | Thomson Licensing | Rateless encoding in communication systems |
| CN101179279A (en) * | 2007-11-27 | 2008-05-14 | 浙江大学 | Non-rate code coding/decoding method fit for additive white Gaussian noise channel |
| CN101325461A (en) * | 2008-07-25 | 2008-12-17 | 浙江大学 | Method for establishing and maintaining cognition radio communication link based on non-speed code |
| CN101645753A (en) * | 2009-09-03 | 2010-02-10 | 电子科技大学 | Coding method without rate codes |
| CN101742570A (en) * | 2009-12-29 | 2010-06-16 | 浙江大学 | Distributed packet access method based on no-rate codes in cognitive radio |
| CN102324998A (en) * | 2011-05-11 | 2012-01-18 | 浙江大学 | Raptor Codes encoding/decoding method suitable for medium/short code lengths of additive white Gaussian noise channel |
Non-Patent Citations (1)
| Title |
|---|
| 基于无速率码的信道编码研究;张瑀琪;《中国优秀硕士学位论文全文数据库 信息科技辑》;20140115(第01期);正文第6页至第56页 * |
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