CN107800517A - A kind of HARQ implementation method and device - Google Patents
A kind of HARQ implementation method and device Download PDFInfo
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- CN107800517A CN107800517A CN201610801244.9A CN201610801244A CN107800517A CN 107800517 A CN107800517 A CN 107800517A CN 201610801244 A CN201610801244 A CN 201610801244A CN 107800517 A CN107800517 A CN 107800517A
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- Prior art keywords
- tti
- harq
- caching
- transmitting terminal
- receiving terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1874—Buffer management
Abstract
The invention discloses the implementation method of HARQ a kind of and device, N number of transmission block TB in a Transmission Time Interval TTI in one hybrid automatic repeat-request HARQ process is numbered transmitting terminal；The transmitting terminal sends the TB of first TTI in first TTI to receiving terminal；The transmitting terminal handles the HARQ_ACK in first TTI in second TTI, and the TB of second TTI is sent to the receiving terminal.The present invention can support to transmit multiple TB in TTI, and can be changed in Radio Resource but in the case that TB sizes are constant, HARQ keeps normal transmission, and bandwidth availability ratio can be improved across TB using HARQ top layer SDU；In existing HARQ realizations, carry out simple modification can and realize this method.
Description
Technical field
The present embodiments relate to the implementation method and device of the technical field of communication, more particularly to a kind of HARQ.
Background technology
Mixed automatic retransfer (Hybrid Automatic Repeat Request, HARQ) is a kind of by forward error correction
(Forward Error Correction, FEC) and HARQ (Automatic Repeat Request, ARQ) phase
With reference to and formed technology.Compared to ARQ, HARQ reduces the time of re-transmission, takes full advantage of the re-transmission data repeatedly received
Block, it is widely used in 3G and 4G GSMs.
HARQ is retransmitted using Stop And Wait, and transmitting terminal is after data are sent, to the confirmation (HARQ_ for receiving receiving terminal
ACK before), new data can neither be sent, data can not be retransmitted, waste is caused to bandwidth, in order to improve efficiency of bandwidth use,
And then introduce the concept of process.
Transmitting terminal associates multiple HARQ processes, the Transmission Time Interval of each HARQ processes and a physical layer
(Transfer Time Interval, TTI) is associated, and when some HARQ process waits HARQ_ACK, other processes can be entered
Row data are sent.Relative, each HARQ sends process should have a corresponding HARQ receiving process in receiving terminal.Due to
HARQ re-transmission, receiving terminal can be caused to receive repetition or out of order resource block (Transport Block, TB).
The content of the invention
The purpose of the embodiment of the present invention is the implementation method and device for proposing a kind of HARQ, it is intended to solves how to be directed to one
Individual TTI transmits multiple TB wireless system, avoids because receiving terminal caused by HARQ re-transmission receives repetition or out of order TB
Problem.
To use following technical scheme up to this purpose, the embodiment of the present invention：
In a first aspect, a kind of HARQ implementation method, methods described include：
Transmitting terminal is by N number of biography in a Transmission Time Interval TTI in a hybrid automatic repeat-request HARQ process
Defeated piece of TB is numbered, and each TB form includes new data instruction NDI, field TB_SN and net load, wherein, the field
NDI is used to identify whether the TB sent is to retransmit, and if retransmitting whether belong to a TTI when then being sent for the first time with new data
It is interior；The field TB_SN is used for the numbering for identifying the TB；
The transmitting terminal sends the TB of first TTI in first TTI to receiving terminal, to cause the receiving terminal
The TB of first TTI is received in first TTI and the HARQ_ of first TTI is sent to the transmitting terminal
ACK；
The transmitting terminal handles the HARQ_ACK in first TTI in second TTI, and is sent out to the receiving terminal
The TB of second TTI is sent, to cause the receiving terminal to receive the TB of second TTI in second TTI, and
The HARQ_ACK of second TTI is sent to the transmitting terminal.
Preferably, the length of the field NDI is 2bit；If the value of the field NDI is 0b00, the new number is identified
According to sending the TB for the first time；
If the value of the field NDI is 0b01, mark retransmits and belongs to same when being sent for the first time with the new data
In individual TTI；
If the value of the field NDI is 0b10, mark is retransmitted and is not belonging to when being sent for the first time with the new data same
In one TTI；
The length of the field TB_SN is that { log2 (N) } rounds up.
Preferably, the transmitting terminal handles the HARQ_ACK in first TTI in second TTI, and to described
Receiving terminal sends the TB of second TTI, including：
The transmitting terminal receives the HARQ_ACK that the receiving terminal is sent；
According to HARQ_ACK described in bit scan；
Judge whether be properly received by the receiving terminal in corresponding TB；
If can be properly received in corresponding TB by the receiving terminal, TB is deleted from the caching of the transmitting terminal；
Judge whether scanning is completed；
If judging, scanning can be completed, and judge whether current TTI can continue to send TB；
Whether if judging, current TTI can continue to send TB, judge the caching of the transmitting terminal not for sky；
If judging, the caching of the transmitting terminal not for sky, judges whether belong to same TTI with previous TTI；
If judge to be not belonging to same TTI with previous TTI, by the NDI fields of the TB in the caching of the transmitting terminal
It is arranged to 0b10；
If judging to belong to same TTI with previous TTI, the NDI fields of the TB in the caching of the transmitting terminal are set
It is set to 0b11；
If judging, the transmitting terminal caching for sky, generates new TB, by the NDI words of the TB in the caching of the transmitting terminal
Section is arranged to 0b00, and sets the field TB_SN；
The new TB is stored in the caching of the transmitting terminal and sends the new TB.
Second aspect, a kind of HARQ implementation method, methods described include：
The TB for first TTI that receiving terminal receiving end/sending end is sent；
The receiving terminal sends the HARQ_ACK of first TTI to the transmitting terminal；
If the transmitting terminal handles the HARQ_ACK of first TTI and to second TTI's of receiving terminal transmission
During TB, the receiving terminal receives the TB of second TTI and the HARQ_ of second TTI is sent to the transmitting terminal
ACK。
Preferably, the TB for first TTI that the receiving terminal receiving end/sending end is sent, including：
The receiving terminal receives the TB that the transmitting terminal is sent；
Judge whether the TB handles completion；
If the untreated completions of TB, judge whether the TB received decodes correctly；
If the TB decodings of the reception are correct, whether the value for judging field NDI is 0b10；
If the value of the field NDI is 0b10, different TTI re-transmissions TB guarantor is searched according to the field TB_SN of the TB
Position is deposited, and the TB is copied in the caching of the receiving terminal；
If the value of the field NDI is 0b11, identical TTI re-transmissions TB guarantor is searched according to the field TB_SN of the TB
Position is deposited, and the TB is copied in the caching of the receiving terminal；
If the value of the field NDI is 0b00, according to the current location of the caching of the receiving terminal, the TB is copied
Into the caching of the receiving terminal；
And update the current location of the rx-side buffering.
Preferably, methods described also includes：
If the TB of the reception does not decode the current location for correctly, recording the receiving terminal caching, after being retransmitted as TB
Save location；
Update the current save location of the receiving terminal caching.
Preferably, methods described also includes：
If TB processing is completed, and properly generates HARQ_ACK according to the TB of reception decodings, and to the transmission
End sends the HARQ_ACK；
Continue with continuous TB in the receiving terminal caching.
The third aspect, a kind of HARQ realization device, described device include：
Numbering module, for by a Transmission Time Interval TTI in a hybrid automatic repeat-request HARQ process
N number of transmission block TB be numbered, each TB form includes new data instruction NDI, field TB_SN and net load, wherein, institute
State field NDI be used for identify send TB whether be retransmit, and if retransmit then with new data for the first time transmission when whether belong to
In one TTI；The field TB_SN is used for the numbering for identifying the TB；
Sending module, for sending the TB of first TTI to receiving terminal in first TTI, to cause described connect
Receiving end receives the TB of first TTI in first TTI and sends first TTI's to the transmitting terminal
HARQ_ACK；
Processing module, for handling the HARQ_ACK in first TTI in second TTI, and to the reception
End sends the TB of second TTI, to cause the receiving terminal to receive second TTI's in second TTI
TB, and send to the transmitting terminal HARQ_ACK of second TTI.
Preferably, the length of the field NDI is 2bit；If the value of the field NDI is 0b00, the new number is identified
According to sending the TB for the first time；
If the value of the field NDI is 0b01, mark retransmits and belongs to same when being sent for the first time with the new data
In individual TTI；
If the value of the field NDI is 0b10, mark is retransmitted and is not belonging to when being sent for the first time with the new data same
In one TTI；
The length of the field TB_SN is that { log2 (N) } rounds up.
Preferably, the processing module, is specifically used for：
Receive the HARQ_ACK that the receiving terminal is sent；
According to HARQ_ACK described in bit scan；
Judge whether be properly received by the receiving terminal in corresponding TB；
If can be properly received in corresponding TB by the receiving terminal, TB is deleted from the caching of the transmitting terminal；
Judge whether scanning is completed；
If judging, scanning can be completed, and judge whether current TTI can continue to send TB；
Whether if judging, current TTI can continue to send TB, judge the caching of the transmitting terminal not for sky；
If judging, the caching of the transmitting terminal not for sky, judges whether belong to same TTI with previous TTI；
If judge to be not belonging to same TTI with previous TTI, by the NDI fields of the TB in the caching of the transmitting terminal
It is arranged to 0b10；
If judging to belong to same TTI with previous TTI, the NDI fields of the TB in the caching of the transmitting terminal are set
It is set to 0b11；
If judging, the transmitting terminal caching for sky, generates new TB, by the NDI words of the TB in the caching of the transmitting terminal
Section is arranged to 0b00, and sets the field TB_SN；
The new TB is stored in the caching of the transmitting terminal and sends the new TB.
Fourth aspect, a kind of HARQ realization device, described device include：
First receiving module, first TTI sent for receiving end/sending end TB；
Sending module, for sending the HARQ_ACK of first TTI to the transmitting terminal；
Second receiving module, if for transmitting terminal processing first TTI HARQ_ACK and to the reception
During second TTI of end transmission TB, the TB for receiving second TTI simultaneously sends second TTI's to the transmitting terminal
HARQ_ACK。
Preferably, first receiving module, is specifically used for：
Receive the TB that the transmitting terminal is sent；
Judge whether the TB handles completion；
If the untreated completions of TB, judge whether the TB received decodes correctly；
If the TB decodings of the reception are correct, whether the value for judging field NDI is 0b10；
If the value of the field NDI is 0b10, different TTI re-transmissions TB guarantor is searched according to the field TB_SN of the TB
Position is deposited, and the TB is copied in the caching of the receiving terminal；
If the value of the field NDI is 0b11, identical TTI re-transmissions TB guarantor is searched according to the field TB_SN of the TB
Position is deposited, and the TB is copied in the caching of the receiving terminal；
If the value of the field NDI is 0b00, according to the current location of the caching of the receiving terminal, the TB is copied
Into the caching of the receiving terminal；
And update the current location of the rx-side buffering.
Preferably, described device also includes：
Update module, if the TB for the reception does not decode the current location for correctly, recording the receiving terminal caching,
Save location after being retransmitted as TB；Update the current save location of the receiving terminal caching.
Preferably, described device also includes：
Processing module, if being completed for TB processing, and HARQ_ACK is properly generated according to the TB of reception decodings,
And send the HARQ_ACK to the transmitting terminal；Continue with continuous TB in the receiving terminal caching.
The embodiment of the present invention provides a kind of HARQ implementation method and device, and transmitting terminal is by a hybrid automatic repeat-request
N number of transmission block TB in a Transmission Time Interval TTI in HARQ processes is numbered；The transmitting terminal is in first TTI
The interior TB that first TTI is sent to receiving terminal；The transmitting terminal is handled in second TTI in first TTI
HARQ_ACK, and send to the receiving terminal TB of second TTI.In the prior art, TB order recovery and repetition
Detection be top layer complete, it is necessary to using top layer SDU sequence number, so as to which by TB and SDU bindings, together, a TB can only
A SDU is carried, is retransmitted when occurring, it is necessary to which the SDU data retransmitted have been fixed, therefore Radio Resource change also must assure that TB
Size is constant, and the present invention is to be responsible for TB order recoveries by HARQ processes and repeat to detect, therefore relieves TB and top layer SDU
Binding relationship, SDU can so share on several TB, so as to improve bandwidth usage across TB equivalent to by SDU header overhead
Rate；Also, in the prior art, TTI ACK responses are designed as 1bit, such a TTI can only transmit a TB, and
ACK responses are extended in the application, using more bit, multiple TB are transmitted so as to a TTI, as long as while TB sizes it is constant,
Can keeps normal transmission.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of HARQ provided in an embodiment of the present invention implementation method；
Fig. 2 is a kind of TB provided in an embodiment of the present invention form schematic diagram；
Fig. 3 is a kind of HARQ_ACK provided in an embodiment of the present invention structural representation；
Fig. 4 is a kind of HARQ_ACK provided in an embodiment of the present invention schematic flow sheet；
Fig. 5 is the schematic flow sheet of another HARQ provided in an embodiment of the present invention implementation method；
Fig. 6 is the schematic flow sheet of another HARQ provided in an embodiment of the present invention implementation method；
Fig. 7 is a kind of high-level schematic functional block diagram of HARQ provided in an embodiment of the present invention realization device；
Fig. 8 is the high-level schematic functional block diagram of another HARQ provided in an embodiment of the present invention realization device.
Embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this
The specific embodiment of place description is used only for explaining the embodiment of the present invention, rather than the restriction to the embodiment of the present invention.In addition also
It should be noted that for the ease of describing, the part related to the embodiment of the present invention rather than entire infrastructure are illustrate only in accompanying drawing.
With reference to figure 1, Fig. 1 is a kind of schematic flow sheet of HARQ provided in an embodiment of the present invention implementation method.
As shown in figure 1, the implementation method of the HARQ includes：
Step 101, transmitting terminal is by a Transmission Time Interval TTI in a hybrid automatic repeat-request HARQ process
N number of transmission block TB be numbered, each TB form includes new data instruction (new data indicator, NDI), field
TB_SN and net load, wherein, the field NDI be used for identify send TB whether be retransmit, and if retransmit then with new data
Whether belong in a TTI when sending for the first time；The field TB_SN is used for the numbering for identifying the TB；
Specifically, as shown in Fig. 2 Fig. 2 is a kind of TB provided in an embodiment of the present invention form schematic diagram.
Wherein, the length of the field NDI is 2bit；If the value of the field NDI is 0b00, the new data is identified
Send the TB for the first time；If the value of the field NDI is 0b01, when mark is retransmitted and sent for the first time with the new data
Belong in same TTI；If the value of the field NDI is 0b10, when mark is retransmitted and sent for the first time with the new data
It is not belonging in same TTI；
The length of the field TB_SN is that { log2 (N) } rounds up.
Step 102, the transmitting terminal sends the TB of first TTI in first TTI to receiving terminal, to cause
Receiving terminal is stated to receive the TB of first TTI in first TTI and send first TTI to the transmitting terminal
HARQ_ACK；
Specifically, as shown in figure 3, Fig. 3 is a kind of HARQ_ACK provided in an embodiment of the present invention structural representation.
Wherein, ACK0 length is 1bit, for receiving ACK corresponding to first TB
0b0：Receiving terminal proper reception of TB；
0b1：Receiving terminal is not properly received TB, it is necessary to retransmit；
ACK1Length is 1bit, for receiving ACK corresponding to second TB；
ACKN-1Length is 1bit, for receiving ACK corresponding to n-th TB.
Step 103, the transmitting terminal handles the HARQ_ACK in first TTI in second TTI, and to described
Receiving terminal sends the TB of second TTI, to cause the receiving terminal to receive described second in second TTI
TTI TB, and send to the transmitting terminal HARQ_ACK of second TTI.
Specifically, due to also confiscating HARQ_ACK during initial first TTI of transmission of the process of transmission TB, therefore it is all
TB is to send first, and receiving process is handled after receiving TB, generates and sends HARQ_ACK, since second TTI, hair
Journey processing HARQ_ACK is sent into, retransmits or sends TB first, receiving process is handled after receiving TB, generates and sends HARQ_
ACK, the like.
As shown in figure 4, Fig. 4 is a kind of HARQ_ACK provided in an embodiment of the present invention schematic flow sheet.As shown in figure 4,
The HARQ_ACK that transmission process processing receiving process is sent, according to response, delete receiving end in transmission caching and confirm what is received
TB.Then remaining TB's is transmitted in the TB and transmission caching that can be sent according to current TTI：If with previous TTI
It is not belonging to same resource period and sends in caching have remaining TB, TB NDI is arranged to 0b10, expression is to retransmit and belong to
Different resource periods, then resends.If with previous TTI belong to same resource period and send caching in have it is surplus
Remaining TB, TB NDI is arranged to 0b01, expression is to retransmit and belong to same resource period, is then resend.If send
There is no remaining TB in caching, generate new TB, NDI is arranged to 0b00, and sets TB_SN by the order for sending TB, and TB is deposited
Enter after sending caching, send TB.
Preferably, the transmitting terminal handles the HARQ_ACK in first TTI in second TTI, and to described
Receiving terminal sends the TB of second TTI, including：
The transmitting terminal receives the HARQ_ACK that the receiving terminal is sent；
According to HARQ_ACK described in bit scan；
Judge whether be properly received by the receiving terminal in corresponding TB；
If can be properly received in corresponding TB by the receiving terminal, TB is deleted from the caching of the transmitting terminal；
Judge whether scanning is completed；
If judging, scanning can be completed, and judge whether current TTI can continue to send TB；
Whether if judging, current TTI can continue to send TB, judge the caching of the transmitting terminal not for sky；
If judging, the caching of the transmitting terminal not for sky, judges whether belong to same TTI with previous TTI；
If judge to be not belonging to same TTI with previous TTI, by the NDI fields of the TB in the caching of the transmitting terminal
It is arranged to 0b10；
If judging to belong to same TTI with previous TTI, the NDI fields of the TB in the caching of the transmitting terminal are set
It is set to 0b11；
If judging, the transmitting terminal caching for sky, generates new TB, by the NDI words of the TB in the caching of the transmitting terminal
Section is arranged to 0b00, and sets the field TB_SN；
The new TB is stored in the caching of the transmitting terminal and sends the new TB.
The embodiment of the present invention provides a kind of HARQ implementation method, and transmitting terminal enters a hybrid automatic repeat-request HARQ
N number of transmission block TB in a Transmission Time Interval TTI in journey is numbered；The transmitting terminal is in first TTI to connecing
Receiving end sends the TB of first TTI；The transmitting terminal handles the HARQ_ in first TTI in second TTI
ACK, and send to the receiving terminal TB of second TTI.The present invention can support to transmit multiple TB in TTI, and
And it can be changed in Radio Resource but in the case that TB sizes are constant, HARQ keeps normal transmission, uses HARQ upper strata
SDU can improve bandwidth availability ratio across TB；In existing HARQ realizations, carry out simple modification can and realize this method.
With reference to figure 5, Fig. 5 is the schematic flow sheet of another HARQ provided in an embodiment of the present invention implementation method.
As shown in figure 5, the implementation method of the HARQ includes：
Step 501, the TB for first TTI that receiving terminal receiving end/sending end is sent；
Preferably, the TB for first TTI that the receiving terminal receiving end/sending end is sent, including：
The receiving terminal receives the TB that the transmitting terminal is sent；
Judge whether the TB handles completion；
If the untreated completions of TB, judge whether the TB received decodes correctly；
If the TB decodings of the reception are correct, whether the value for judging field NDI is 0b10；
If the value of the field NDI is 0b10, different TTI re-transmissions TB guarantor is searched according to the field TB_SN of the TB
Position is deposited, and the TB is copied in the caching of the receiving terminal；
If the value of the field NDI is 0b11, identical TTI re-transmissions TB guarantor is searched according to the field TB_SN of the TB
Position is deposited, and the TB is copied in the caching of the receiving terminal；
If the value of the field NDI is 0b00, according to the current location of the caching of the receiving terminal, the TB is copied
Into the caching of the receiving terminal；
And update the current location of the rx-side buffering.
Step 502, the receiving terminal sends the HARQ_ACK of first TTI to the transmitting terminal；
Step 503, if the transmitting terminal handles the HARQ_ACK of first TTI and sends second to the receiving terminal
During individual TTI TB, the receiving terminal receives the TB of second TTI and sends second TTI's to the transmitting terminal
HARQ_ACK。
Preferably, methods described also includes：
If the TB of the reception does not decode the current location for correctly, recording the receiving terminal caching, after being retransmitted as TB
Save location；
Update the current save location of the receiving terminal caching.
Preferably, methods described also includes：
If TB processing is completed, and properly generates HARQ_ACK according to the TB of reception decodings, and to the transmission
End sends the HARQ_ACK；
Continue with continuous TB in the receiving terminal caching.
Specifically, as shown in fig. 6, the flow that Fig. 6 is another HARQ provided in an embodiment of the present invention implementation method is shown
It is intended to.
If TB decodings are correct, TB NDI is made a decision, if 0b10：Explanation is the TB that a upper resource period retransmits, root
Different resource cycle re-transmission TB save location is searched according to TB TB_SN, TB is copied in order caching；If 0b01：
Explanation is the TB that this resource period retransmits, and same asset cycle re-transmission TB save location is searched according to TB TB_SN, TB is copied
Shellfish is into order caching；If 0b00：Explanation is the TB sent first, and TB is copied to the current preservation position of order caching
Put, and update the current save location of order caching.
If TB decoding errors, need transmitting terminal to resend TB, it is therefore desirable to record this TB save location, together
The current save location of Shi Gengxin order cachings, prepared to receive next TB.
It is whether correct according to TB decoding after the completion of all reception TB processing, generate HARQ_ACK and send, simultaneously
By in order caching from a upper TTI handled after save location into current save location continuous TB be transferred to upper strata,
Handled.
The embodiment of the present invention provides a kind of HARQ implementation method, and transmitting terminal enters a hybrid automatic repeat-request HARQ
N number of transmission block TB in a Transmission Time Interval TTI in journey is numbered；The transmitting terminal is in first TTI to connecing
Receiving end sends the TB of first TTI；The transmitting terminal handles the HARQ_ in first TTI in second TTI
ACK, and send to the receiving terminal TB of second TTI.The present invention can support to transmit multiple TB in TTI, and
And it can be changed in Radio Resource but in the case that TB sizes are constant, HARQ keeps normal transmission, uses HARQ upper strata
SDU can improve bandwidth availability ratio across TB；In existing HARQ realizations, carry out simple modification can and realize this method.
With reference to figure 7, Fig. 7 is a kind of high-level schematic functional block diagram of HARQ provided in an embodiment of the present invention realization device.
As shown in fig. 7, described device includes：
Numbering module 701, for by a Transmission Time Interval TTI in a hybrid automatic repeat-request HARQ process
Interior N number of transmission block TB is numbered, and each TB form includes new data instruction NDI, field TB_SN and net load, wherein,
Whether the field NDI is used for whether the TB that mark is sent to be to retransmit, and if retransmitting then with belonging to during new data transmission for the first time
In in a TTI；The field TB_SN is used for the numbering for identifying the TB；
Sending module 702, it is described to cause for sending the TB of first TTI to receiving terminal in first TTI
Receiving terminal receives the TB of first TTI in first TTI and sends first TTI's to the transmitting terminal
HARQ_ACK；
Processing module 703, for handling the HARQ_ACK in first TTI in second TTI, and connect to described
Receiving end sends the TB of second TTI, to cause the receiving terminal to receive second TTI in second TTI
TB, and send to the transmitting terminal HARQ_ACK of second TTI.
Preferably, the length of the field NDI is 2bit；If the value of the field NDI is 0b00, the new number is identified
According to sending the TB for the first time；If the value of the field NDI is 0b01, mark is retransmitted and sent for the first time with the new data
When belong in same TTI；If the value of the field NDI is 0b10, mark is retransmitted and sent for the first time with the new data
When be not belonging in same TTI；The length of the field TB_SN is that { log2 (N) } rounds up.
Preferably, the processing module 703, is specifically used for：
Receive the HARQ_ACK that the receiving terminal is sent；
According to HARQ_ACK described in bit scan；
Judge whether be properly received by the receiving terminal in corresponding TB；
If can be properly received in corresponding TB by the receiving terminal, TB is deleted from the caching of the transmitting terminal；
Judge whether scanning is completed；
If judging, scanning can be completed, and judge whether current TTI can continue to send TB；
Whether if judging, current TTI can continue to send TB, judge the caching of the transmitting terminal not for sky；
If judging, the caching of the transmitting terminal not for sky, judges whether belong to same TTI with previous TTI；
If judge to be not belonging to same TTI with previous TTI, by the NDI fields of the TB in the caching of the transmitting terminal
It is arranged to 0b10；
If judging to belong to same TTI with previous TTI, the NDI fields of the TB in the caching of the transmitting terminal are set
It is set to 0b11；
If judging, the transmitting terminal caching for sky, generates new TB, by the NDI words of the TB in the caching of the transmitting terminal
Section is arranged to 0b00, and sets the field TB_SN；
The new TB is stored in the caching of the transmitting terminal and sends the new TB.
The embodiment of the present invention provides a kind of HARQ realization device, and transmitting terminal enters a hybrid automatic repeat-request HARQ
N number of transmission block TB in a Transmission Time Interval TTI in journey is numbered；The transmitting terminal is in first TTI to connecing
Receiving end sends the TB of first TTI；The transmitting terminal handles the HARQ_ in first TTI in second TTI
ACK, and send to the receiving terminal TB of second TTI.The present invention can support to transmit multiple TB in TTI, and
And it can be changed in Radio Resource but in the case that TB sizes are constant, HARQ keeps normal transmission, uses HARQ upper strata
SDU can improve bandwidth availability ratio across TB；In existing HARQ realizations, carry out simple modification can and realize this method.
With reference to figure 8, Fig. 8 is the high-level schematic functional block diagram of another HARQ provided in an embodiment of the present invention realization device.
As shown in figure 8, described device includes：
First receiving module 801, first TTI sent for receiving end/sending end TB；
Sending module 802, for sending the HARQ_ACK of first TTI to the transmitting terminal；
Second receiving module 803, if handling the HARQ_ACK of first TTI for the transmitting terminal and being connect to described
During second TTI of receiving end transmission TB, the TB for receiving second TTI simultaneously sends second TTI to the transmitting terminal
HARQ_ACK.
Preferably, first receiving module 801, is specifically used for：
Receive the TB that the transmitting terminal is sent；
Judge whether the TB handles completion；
If the untreated completions of TB, judge whether the TB received decodes correctly；
If the TB decodings of the reception are correct, whether the value for judging field NDI is 0b10；
If the value of the field NDI is 0b10, different TTI re-transmissions TB guarantor is searched according to the field TB_SN of the TB
Position is deposited, and the TB is copied in the caching of the receiving terminal；
If the value of the field NDI is 0b11, identical TTI re-transmissions TB guarantor is searched according to the field TB_SN of the TB
Position is deposited, and the TB is copied in the caching of the receiving terminal；
If the value of the field NDI is 0b00, according to the current location of the caching of the receiving terminal, the TB is copied
Into the caching of the receiving terminal；
And update the current location of the rx-side buffering.
Preferably, described device also includes：
Update module, if the TB for the reception does not decode the current location for correctly, recording the receiving terminal caching,
Save location after being retransmitted as TB；Update the current save location of the receiving terminal caching.
Preferably, described device also includes：
Processing module, if being completed for TB processing, and HARQ_ACK is properly generated according to the TB of reception decodings,
And send the HARQ_ACK to the transmitting terminal；Continue with continuous TB in the receiving terminal caching.
The embodiment of the present invention provides a kind of HARQ realization device, and transmitting terminal enters a hybrid automatic repeat-request HARQ
N number of transmission block TB in a Transmission Time Interval TTI in journey is numbered；The transmitting terminal is in first TTI to connecing
Receiving end sends the TB of first TTI；The transmitting terminal handles the HARQ_ in first TTI in second TTI
ACK, and send to the receiving terminal TB of second TTI.The present invention can support to transmit multiple TB in TTI, and
And it can be changed in Radio Resource but in the case that TB sizes are constant, HARQ keeps normal transmission, uses HARQ upper strata
SDU can improve bandwidth availability ratio across TB；In existing HARQ realizations, carry out simple modification can and realize this method.
The technical principle of the embodiment of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain this
The principle of inventive embodiments, and the limitation to protection domain of the embodiment of the present invention can not be construed in any way.Based on herein
Explanation, those skilled in the art, which would not require any inventive effort, can associate the other specific of the embodiment of the present invention
Embodiment, these modes are fallen within the protection domain of the embodiment of the present invention.
Claims (14)
1. a kind of HARQ implementation method, it is characterised in that methods described includes：
Transmitting terminal is by N number of transmission block in a Transmission Time Interval TTI in a hybrid automatic repeat-request HARQ process
TB is numbered, and each TB form includes new data instruction NDI, field TB_SN and net load, wherein, the field NDI is used
In mark send TB whether be retransmit, and if retransmit then with new data for the first time send when whether belong in a TTI；Institute
State the numbering that field TB_SN is used to identify the TB；
The transmitting terminal sends the TB of first TTI in first TTI to receiving terminal, to cause the receiving terminal in institute
State the TB that first TTI is received in first TTI and the HARQ_ACK of first TTI is sent to the transmitting terminal；
The transmitting terminal handles the HARQ_ACK in first TTI in second TTI, and sends institute to the receiving terminal
Second TTI TB is stated, to cause the receiving terminal to receive the TB of second TTI in second TTI, and to institute
State the HARQ_ACK that transmitting terminal sends second TTI.
2. according to the method for claim 1, it is characterised in that the length of the field NDI is 2bit；If the field
NDI value is 0b00, then identifies the new data and send the TB for the first time；
If the value of the field NDI is 0b01, mark retransmits and belongs to same TTI when being sent for the first time with the new data
It is interior；
If the value of the field NDI is 0b10, mark is retransmitted and is not belonging to when being sent for the first time with the new data same
In TTI；
The length of the field TB_SN is that { log2 (N) } rounds up.
3. method according to claim 1 or 2, it is characterised in that the transmitting terminal handles described in second TTI
HARQ_ACK in one TTI, and to receiving terminal transmission second TTI TB, including：
The transmitting terminal receives the HARQ_ACK that the receiving terminal is sent；
According to HARQ_ACK described in bit scan；
Judge whether be properly received by the receiving terminal in corresponding TB；
If can be properly received in corresponding TB by the receiving terminal, TB is deleted from the caching of the transmitting terminal；
Judge whether scanning is completed；
If judging, scanning can be completed, and judge whether current TTI can continue to send TB；
Whether if judging, current TTI can continue to send TB, judge the caching of the transmitting terminal not for sky；
If judging, the caching of the transmitting terminal not for sky, judges whether belong to same TTI with previous TTI；
If judging to be not belonging to same TTI with previous TTI, the NDI fields of the TB in the caching of the transmitting terminal are set
For 0b10；
If judging to belong to same TTI with previous TTI, the NDI fields of the TB in the caching of the transmitting terminal are arranged to
0b11；
If judging, the transmitting terminal caching for sky, generates new TB, the NDI fields of the TB in the caching of the transmitting terminal is set
0b00 is set to, and the field TB_SN is set；
The new TB is stored in the caching of the transmitting terminal and sends the new TB.
4. a kind of HARQ implementation method, it is characterised in that methods described includes：
The TB for first TTI that receiving terminal receiving end/sending end is sent；
The receiving terminal sends the HARQ_ACK of first TTI to the transmitting terminal；
If the transmitting terminal handles the HARQ_ACK of first TTI and the TB to second TTI of receiving terminal transmission,
The receiving terminal receives the TB of second TTI and the HARQ_ACK of second TTI is sent to the transmitting terminal.
5. according to the method for claim 4, it is characterised in that first TTI that the receiving terminal receiving end/sending end is sent
TB, including：
The receiving terminal receives the TB that the transmitting terminal is sent；
Judge whether the TB handles completion；
If the untreated completions of TB, judge whether the TB received decodes correctly；
If the TB decodings of the reception are correct, whether the value for judging field NDI is 0b10；
If the value of the field NDI is 0b10, different TTI re-transmissions TB preservation position is searched according to the field TB_SN of the TB
Put, and the TB copied in the caching of the receiving terminal；
If the value of the field NDI is 0b11, identical TTI re-transmissions TB preservation position is searched according to the field TB_SN of the TB
Put, and the TB copied in the caching of the receiving terminal；
If the value of the field NDI is 0b00, according to the current location of the caching of the receiving terminal, the TB is copied to institutes
In the caching for stating receiving terminal；
And update the current location of the rx-side buffering.
6. the method according to claim 4 or 5, it is characterised in that methods described also includes：
If the TB of the reception does not decode the current location for correctly, recording the receiving terminal caching, the guarantor after being retransmitted as TB
Deposit position；
Update the current save location of the receiving terminal caching.
7. the method according to claim 4 or 5, it is characterised in that methods described also includes：
If the TB processing is completed, and properly generates HARQ_ACK according to the TB of reception decodings, and is sent out to the transmitting terminal
Send the HARQ_ACK；
Continue with continuous TB in the receiving terminal caching.
8. a kind of HARQ realization device, it is characterised in that described device includes：
Numbering module, for will be N number of in a Transmission Time Interval TTI in a hybrid automatic repeat-request HARQ process
Transmission block TB is numbered, and each TB form includes new data instruction NDI, field TB_SN and net load, wherein, the word
Section NDI is used to identify whether the TB sent is to retransmit, and if retransmitting whether belong to one when then being sent for the first time with new data
In TTI；The field TB_SN is used for the numbering for identifying the TB；
Sending module, for sending the TB of first TTI to receiving terminal in first TTI, to cause the receiving terminal
The TB of first TTI is received in first TTI and the HARQ_ of first TTI is sent to the transmitting terminal
ACK；
Processing module, sent out for handling the HARQ_ACK in first TTI in second TTI, and to the receiving terminal
The TB of second TTI is sent, to cause the receiving terminal to receive the TB of second TTI in second TTI, and
The HARQ_ACK of second TTI is sent to the transmitting terminal.
9. device according to claim 8, it is characterised in that the length of the field NDI is 2bit；If the field
NDI value is 0b00, then identifies the new data and send the TB for the first time；
If the value of the field NDI is 0b01, mark retransmits and belongs to same TTI when being sent for the first time with the new data
It is interior；
If the value of the field NDI is 0b10, mark is retransmitted and is not belonging to when being sent for the first time with the new data same
In TTI；
The length of the field TB_SN is that { log2 (N) } rounds up.
10. device according to claim 8 or claim 9, it is characterised in that the processing module, be specifically used for：
Receive the HARQ_ACK that the receiving terminal is sent；
According to HARQ_ACK described in bit scan；
Judge whether be properly received by the receiving terminal in corresponding TB；
If can be properly received in corresponding TB by the receiving terminal, TB is deleted from the caching of the transmitting terminal；
Judge whether scanning is completed；
If judging, scanning can be completed, and judge whether current TTI can continue to send TB；
Whether if judging, current TTI can continue to send TB, judge the caching of the transmitting terminal not for sky；
If judging, the caching of the transmitting terminal not for sky, judges whether belong to same TTI with previous TTI；
If judging to be not belonging to same TTI with previous TTI, the NDI fields of the TB in the caching of the transmitting terminal are set
For 0b10；
If judging to belong to same TTI with previous TTI, the NDI fields of the TB in the caching of the transmitting terminal are arranged to
0b11；
If judging, the transmitting terminal caching for sky, generates new TB, the NDI fields of the TB in the caching of the transmitting terminal is set
0b00 is set to, and the field TB_SN is set；
The new TB is stored in the caching of the transmitting terminal and sends the new TB.
11. a kind of HARQ realization device, it is characterised in that described device includes：
First receiving module, first TTI sent for receiving end/sending end TB；
Sending module, for sending the HARQ_ACK of first TTI to the transmitting terminal；
Second receiving module, if handling the HARQ_ACK of first TTI for the transmitting terminal and being sent out to the receiving terminal
When sending second TTI TB, receive the TB of second TTI and the HARQ_ of second TTI is sent to the transmitting terminal
ACK。
12. device according to claim 11, it is characterised in that first receiving module, be specifically used for：
Receive the TB that the transmitting terminal is sent；
Judge whether the TB handles completion；
If the untreated completions of TB, judge whether the TB received decodes correctly；
If the TB decodings of the reception are correct, whether the value for judging field NDI is 0b10；
If the value of the field NDI is 0b10, different TTI re-transmissions TB preservation position is searched according to the field TB_SN of the TB
Put, and the TB copied in the caching of the receiving terminal；
If the value of the field NDI is 0b11, identical TTI re-transmissions TB preservation position is searched according to the field TB_SN of the TB
Put, and the TB copied in the caching of the receiving terminal；
If the value of the field NDI is 0b00, according to the current location of the caching of the receiving terminal, the TB is copied to institutes
In the caching for stating receiving terminal；
And update the current location of the rx-side buffering.
13. the device according to claim 11 or 12, it is characterised in that described device also includes：
Update module, if the TB for the reception does not decode the current location for correctly, recording the receiving terminal caching, as
Save location after TB re-transmissions；Update the current save location of the receiving terminal caching.
14. the device according to claim 11 or 12, it is characterised in that described device also includes：
Processing module, if being completed for TB processing, and decoded according to the TB of the reception and properly generate HARQ_ACK, and to
The transmitting terminal sends the HARQ_ACK；Continue with continuous TB in the receiving terminal caching.
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