CN108933642A - A kind of downlink retransmission method, base station and terminal based on code block grouping - Google Patents
A kind of downlink retransmission method, base station and terminal based on code block grouping Download PDFInfo
- Publication number
- CN108933642A CN108933642A CN201710365239.2A CN201710365239A CN108933642A CN 108933642 A CN108933642 A CN 108933642A CN 201710365239 A CN201710365239 A CN 201710365239A CN 108933642 A CN108933642 A CN 108933642A
- Authority
- CN
- China
- Prior art keywords
- code block
- downlink
- grouping
- base station
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the present invention discloses a kind of downlink retransmission method, base station and terminal based on code block grouping, and method includes：After base station determines the downlink data for existing and sending to target terminal, Downlink Control Information is generated；Downlink Control Information carries code block packet count instruction information；Downlink data and Downlink Control Information are sent to target terminal by base station；Base station receives the downlink retransmission instruction information that target terminal is sent, and determines the code block grouping that downlink retransmits；Downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of downlink data.Compared with prior art, the embodiment of the present invention passes through instruction code block packet count, terminal is set to carry out code block grouping to downlink data, and code-aiming block grouping carries out verifying and determining the code block grouping that downlink retransmits, solve the problems, such as that the data of 5G communication system high-throughput business retransmit, while realizing that throughput of system increases, reduce the feedback and resource instruction expense of system.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to it is a kind of based on code block grouping downlink retransmission method, base station and
Terminal.
Background technique
5th third-generation mobile communication technology (5G) prevailing scenario includes：Enhance mobile broadband (Enhance Mobile
Broadband, eMBB), highly reliable low time delay communication (Ultra-Reliable Low latency Communications,
) and magnanimity machine type communication (massive machine type of communication, mMTC) URLLC.These scenes pair
5G communication system proposes highly reliable, low time delay, big bandwidth, and wide covering etc. requires.
In LTE wireless communication protocol, if the bit number of transmission block (Transfer Block, TB) is provided greater than agreement
Transmission block maximum number bits, then code block (CodeBlock, CB) dividing processing is carried out to TB, and do for the CB that is each partitioned into
Cyclic redundancy check (CyclicRedundancy Check, CRC) coding, but asynchronous mixed automatic retransfer in LTE communication system
(Hybrid automatic repeat request, HARQ) technology only executes re-transmission to TB, i.e., if mistake occurs in TB transmission
Accidentally, the negative response (NACK) of 1 bit is only fed back to the TB.
Using the retransmission scheme fed back is grouped based on CB or CB in 5G communication system, allow more to a TB feedback
A bit.CB grouping refers to, all CB for including in a TB are grouped, and includes multiple CB in a CB grouping.It retransmits
When CB that only mistake occurs in transmission be grouped each code block for being included, a response or negative response for 1 bit is only fed back in each CB grouping
(ACK/NACK, abbreviation A/N) advantageously reduces the burden of transmission, can increase throughput of system.Fig. 1 is shown based on CB points
The retransmission scheme schematic diagram of group (Group).
But it is more due to CB number using the retransmission scheme fed back based on CB in 5G communication system, it will lead to anti-
Expense is presented to increase.Although therefore can relative to the retransmission scheme fed back based on TB based on the CB retransmission scheme fed back
The increase of throughput of system is brought, but also results in feedback overhead and the complexity increase of system simultaneously, in handling capacity and can not be
Balance and compromise are obtained between complexity of uniting.How CB grouping is carried out there are no clear based on the retransmission scheme that CB is fed back,
How feeding back ACK/NACK, and the problems such as how to retransmit.
Summary of the invention
In view of the above problems, the embodiment of the present invention proposes a kind of downlink weight based on code block grouping for overcoming the above problem
Transmission method, base station and terminal.
In a first aspect, the embodiment of the present invention proposes a kind of downlink retransmission method based on code block grouping, including：
After base station determines the downlink data for existing and sending to target terminal, Downlink Control Information is generated；Wherein, the downlink
Control information carries code block packet count instruction information；
The downlink data and the Downlink Control Information are sent to the target terminal by the base station；
The base station receives the downlink retransmission instruction information that the target terminal is sent, and determines the code block point that downlink retransmits
Group；Wherein, the downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data.
Optionally, after the base station determines the downlink data for existing and sending to target terminal, Downlink Control Information, packet are generated
It includes：
It is determining to be communicated between the target terminal after the base station determines the downlink data for existing and sending to target terminal
The channel state information of channel；
The base station is based on the channel state information, determines the corresponding code block packet count of the channel state information；
The base station is based on the code block packet count, generates Downlink Control Information.
Optionally, the base station is based on the channel state information, determines the corresponding code block point of the channel state information
Group number, including：
The base station is based on the channel state information and the first corresponding relationship, determines that the channel state information is corresponding
Channel status grade；Wherein, first corresponding relationship is predetermined channel state information and channel status grade
Corresponding relationship；
The base station determines that the channel status grade is corresponding based on determining channel status grade and the second corresponding relationship
Code block packet count；Wherein, second corresponding relationship is that predetermined channel status grade is corresponding with code block packet count
Relationship.
Second aspect, the present invention also propose a kind of base station, including：
Generation unit generates Downlink Control Information after determining the downlink data for existing and sending to target terminal；Its
In, the Downlink Control Information carries code block packet count instruction information；
Transmission unit, for the downlink data and the Downlink Control Information to be sent to the target terminal；
Processing unit, the downlink retransmission instruction information sent for receiving the target terminal determine the code that downlink retransmits
Block grouping；Wherein, the downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data.
Optionally, the generation unit, is specifically used for：
After determining the downlink data for existing and sending to target terminal, the letter of the determining communication channel between the target terminal
Channel state information；
Based on the channel state information, the corresponding code block packet count of the channel state information is determined；
Based on the code block packet count, Downlink Control Information is generated.
Optionally, the generation unit is based on the channel state information, determines the corresponding code of the channel state information
Block packet count, including：
Based on the channel state information and the first corresponding relationship, the corresponding channel shape of the channel state information is determined
State grade；Wherein, first corresponding relationship is the corresponding relationship of predetermined channel state information and channel status grade；
Based on determining channel status grade and the second corresponding relationship, the corresponding code block point of the channel status grade is determined
Group number；Wherein, second corresponding relationship is the corresponding relationship of predetermined channel status grade and code block packet count.
The third aspect, the present invention also propose a kind of downlink retransmission method based on code block grouping, including：
Terminal receives the downlink data and Downlink Control Information that base station is sent；Wherein, the Downlink Control Information carries
There is code block packet count to indicate information；
The terminal is based on the code block packet count, is split to the downlink data, obtains multiple code block groupings；
The terminal verifies the grouping of each code block, generates downlink retransmission instruction information；Wherein, the downlink re-transmission refers to
Show that information includes the feedback information of the corresponding each code block grouping of the downlink data；
The downlink retransmission instruction information is sent to the base station by the terminal, so that the base station determines that downlink retransmits
Code block grouping.
Optionally, the terminal verifies the grouping of each code block, including：
The terminal carries out CRC check to all code blocks for including in the grouping of each code block respectively, if including in code block grouping
All code blocks CRC check it is successful, then the feedback information of code block grouping is ACK；If any of code block grouping code block
CRC check failure, then the code block grouping feedback information be NACK.
Fourth aspect, the present invention also propose a kind of terminal, including：
Receiving unit, for receiving the downlink data and Downlink Control Information of base station transmission；Wherein, the downlink control
Information carries code block packet count instruction information；
Cutting unit is split the downlink data, obtains multiple code blocks point for being based on the code block packet count
Group；
Generation unit generates downlink retransmission instruction information for verifying to the grouping of each code block；Wherein, the downlink
Retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data；
Transmission unit, for the downlink retransmission instruction information to be sent to the base station, so that under the base station determines
The code block grouping that row retransmits.
Optionally, the generation unit verifies the grouping of each code block, including：
CRC check is carried out to all code blocks for including in the grouping of each code block respectively, if all codes for including in code block grouping
The CRC check of block is successful, then the feedback information of code block grouping is ACK；If the CRC check of any of code block grouping code block
Failure, then the feedback information of code block grouping is NACK.
Compared with prior art, downlink retransmission method, base station and the terminal based on code block grouping that the embodiment of the present invention proposes,
Data suitable for 5G communication system downlink transfer retransmit, and by indicating code block packet count, terminal are made to carry out code to downlink data
Block grouping, and code-aiming block grouping carries out verifying and determining the code block grouping that downlink retransmits, and solves 5G communication system ultra-high throughput
Data in business retransmit problem, while realizing that throughput of system increases, reduce the feedback and resource instruction expense of system.
Detailed description of the invention
Fig. 1 is the retransmission scheme schematic diagram in the prior art based on CB grouping；
Fig. 2 is CB packet retransmissions present provided in an embodiment of the present invention with respect to the handling capacity improvement ratio schematic diagram that TB is retransmitted；
Fig. 3 is a kind of downlink retransmission method flow chart based on code block grouping provided in an embodiment of the present invention；
Fig. 4 is a kind of architecture of base station schematic diagram provided in an embodiment of the present invention；
Fig. 5 is another downlink retransmission method flow chart based on code block grouping provided in an embodiment of the present invention；
Fig. 6 is a kind of terminal structure schematic diagram provided in an embodiment of the present invention；
Fig. 7 is another architecture of base station schematic diagram provided in an embodiment of the present invention；
Fig. 8 is another terminal structure schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to phase
Same title distinguishes, rather than implies relationship or sequence between these titles.
Generally speaking, compared with the retransmission scheme based on TB, the retransmission scheme based on CB grouping, which can be reduced, provides link
The use in source, so as to effectively improve the handling capacity of system.It is assumed that the bit error rate of transmission TB is Pe_TB, then CB grouping error code
Rate Pe_GroupFor：
Wherein, MGroupFor CB packet count.
Based on the retransmission scheme of CB grouping, the ratio P of each CB grouping correct decodingGroup_THPFor：
Wherein, NbFor the bit number transmitted for the first time, N is HARQ number of retransmissions.
Therefore, the retransmission scheme based on CB grouping improves ratio R compared to the handling capacity of the retransmission scheme based on TBthroughput
For
Wherein, PTB_THPFor the ratio of TB correct decoding.
Fig. 2 is CB packet retransmissions present with respect to the handling capacity improvement ratio schematic diagram that TB is retransmitted, and provides Pe_TB=0.1 and Pe_TB=
R in the case of 0.2 two kindsthroughputCurve, HARQ number of retransmissions N=1 in Fig. 2.
By Fig. 2, it can be concluded that, the few occasion of CB packet count, such as CB packet count are 2 to 10, Pe_TBHandling capacity when=0.1
Promotion degree is lower than Pe_TBThe promotion degree of handling capacity when=0.2, that is to say, that for the retransmission scheme being grouped based on CB, when
When channel circumstance difference, the rare handling capacity that is conducive to of the code block packet count of selection improves；When channel circumstance is good, missed due to existing in TB
The CB quantity of code is seldom, if the CB for including in CB grouping is more, it may appear that cause because of the mistake of a few CB entire
CB grouping needs to retransmit, to influence the promotion of throughput performance, therefore, when channel circumstance is good, includes in a CB grouping
CB number should not be excessive, that is to say, that the code block packet count of selection is conducive to the good occasion of channel circumstance more.Due to code block packet count
Improve greater than cannot further promote handling capacity after certain number, in actual design, needs to select to close as the case may be
Suitable code block packet count.
Therefore, as shown in figure 3, the present embodiment discloses a kind of downlink retransmission method based on code block grouping, it may include following
Step 301 is to 303：
301, after base station determines the downlink data for existing and sending to target terminal, Downlink Control Information is generated；Wherein, described
Downlink Control Information carries code block packet count instruction information.
In the present embodiment, base station makes base station by generating the Downlink Control Information for carrying code block packet count and indicating information
The number that downlink data is divided into code block to be grouped by controllable terminal.
302, the downlink data and the Downlink Control Information are sent to the target terminal by the base station.
303, the base station receives the downlink retransmission instruction information that the target terminal is sent, and determines the code block that downlink retransmits
Grouping；Wherein, the downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data.
In the present embodiment, the downlink retransmission instruction information is one group of ACK/NACK sequence, the ACK and NACK that sequence includes
The sum of for the code block packet count indicate information instruction code block packet count.
Compared with prior art, the embodiment of the present invention makes terminal carry out code block to downlink data by instruction code block packet count
Grouping, and code-aiming block grouping carries out verifying and determining the code block grouping that downlink retransmits, and solves 5G communication system high-throughput business
Data retransmit problem, realize throughput of system increase while, reduce system feedback and resource instruction expense.
In a specific example, after base station described in step 301 determines the downlink data for existing and sending to target terminal,
Downlink Control Information is generated, unshowned following steps 3011 to 3013 in Fig. 3 are specifically included：
3011, after the base station determines the downlink data for existing and sending to target terminal, the determining and target terminal it
Between communication channel channel state information.
In the present embodiment, channel state information can be obtained by prior arts such as measurement, feedback, detections, the present embodiment
It repeats no more.
3012, the base station is based on the channel state information, determines the corresponding code block grouping of the channel state information
Number.
In the present embodiment, code block packet count is determined by channel state information, while so that throughput of system increases,
The feedback and resource of reduction system indicate expense.
3013, the base station is based on the code block packet count, generates Downlink Control Information.
Compared with prior art, the embodiment of the present invention determines code block packet count by channel state information, makes terminal under
Row data carry out code block grouping, and code-aiming block grouping carries out verifying and determining the code block grouping that downlink retransmits, and solves 5G communication system
The data for high-throughput business of uniting retransmit problem, and while realizing that throughput of system increases, the feedback and resource for reducing system refer to
Show expense.
In a specific example, base station described in step 3012 is based on the channel state information, determines the channel
The corresponding code block packet count of status information, specifically includes：
The base station is based on the channel state information and the first corresponding relationship, determines that the channel state information is corresponding
Channel status grade；Wherein, first corresponding relationship is predetermined channel state information and channel status grade
Corresponding relationship；
The base station determines that the channel status grade is corresponding based on determining channel status grade and the second corresponding relationship
Code block packet count；Wherein, second corresponding relationship is that predetermined channel status grade is corresponding with code block packet count
Relationship.
In the present embodiment, by the corresponding relationship of predetermined channel state information and channel status grade, in advance really
The corresponding relationship of fixed channel status grade and code block packet count, so that it is determined that the corresponding code block packet count of channel state information,
Wherein, the low corresponding code block packet count of channel status grade is few, and it is more that channel status grade height corresponds to code block packet count.
In the present embodiment, the first corresponding relationship and/or the second corresponding relationship can be stored as tabular form, the rope of list
Draw and can be used as code block packet count instruction information.List is stored in base station and terminal.
Compared with prior art, pair that the embodiment of the present invention passes through predetermined channel state information and channel status grade
It should be related to, the corresponding relationship of predetermined channel status grade and code block packet count, so that it is determined that channel state information is corresponding
Code block packet count, make terminal to downlink data carry out code block grouping, and code-aiming block grouping carry out verify and determine downlink retransmit
Code block grouping, solves the problems, such as 5G communication system high-throughput business data retransmit, realize throughput of system increase while,
The feedback and resource of reduction system indicate expense.
As shown in figure 4, the present embodiment discloses a kind of base station, it may include with lower unit：Generation unit 41, transmission unit 42 with
And processing unit 43, each unit is described as follows：
Generation unit 41 generates Downlink Control Information after determining the downlink data for existing and sending to target terminal；Its
In, the Downlink Control Information carries code block packet count instruction information；
Transmission unit 42, for the downlink data and the Downlink Control Information to be sent to the target terminal；
Processing unit 43, the downlink retransmission instruction information sent for receiving the target terminal determine what downlink retransmitted
Code block grouping；Wherein, the downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data.
The present embodiment can realize embodiment of the method shown in Fig. 3, therefore, illustrate and effect participates in side shown in Fig. 3
Method embodiment, this embodiment is not repeated.
Compared with prior art, base station disclosed by the embodiments of the present invention makes terminal to lower line number by indicating code block packet count
According to code block grouping, and the code block grouping that code-aiming block grouping carries out verification and determining downlink retransmits is carried out, 5G communication system height is solved
The data of throughput services retransmit problem, and while realizing that throughput of system increases, the feedback and resource instruction for reducing system are opened
Pin.
As shown in figure 5, the present embodiment discloses a kind of downlink retransmission method based on code block grouping, it may include following steps
501 to 504：
501, terminal receives the downlink data and Downlink Control Information that base station is sent；Wherein, the Downlink Control Information
Carry code block packet count instruction information；
502, the terminal is based on the code block packet count, is split to the downlink data, obtains multiple code blocks point
Group；
503, the terminal verifies the grouping of each code block, generates downlink retransmission instruction information；Wherein, the downlink weight
Pass the feedback information that instruction information includes the corresponding each code block grouping of the downlink data；
504, the downlink retransmission instruction information is sent to the base station by the terminal, so that the base station determines downlink
The code block of re-transmission is grouped.
Compared with prior art, the embodiment of the present invention makes terminal carry out code block to downlink data by instruction code block packet count
Grouping, and code-aiming block grouping carries out verifying and determining the code block grouping that downlink retransmits, and solves 5G communication system high-throughput business
Data retransmit problem, realize throughput of system increase while, reduce system feedback and resource instruction expense.
In a specific example, terminal described in step 503 verifies the grouping of each code block, including：
The terminal carries out CRC check to all code blocks for including in the grouping of each code block respectively, if including in code block grouping
All code blocks CRC check it is successful, then the feedback information of code block grouping is ACK；If any of code block grouping code block
CRC check failure, then the code block grouping feedback information be NACK.
In the present embodiment, terminal will receive downlink data carry out code block packet transaction, to each code block grouping in include
All CB carry out CRC check processing.If detecting that some CB is wrong, indicate that the code block is grouped into NACK；, whereas if
All CB for including in code block grouping make mistake without error detection, indicate that the code block is grouped into ACK.
In the present embodiment, terminal completes the CRC check of all code block groupings, forms one group of ACK/NACK sequence, the sequence
Base station is transferred to by uplink control channel or uplink data channels.
In the present embodiment, base station receives above-mentioned code block grouping ACK/NACK sequence and determines mark according to ACK/NACK sequence
Will is the code block packet numbering of NACK, only retransmits the code block that mark is NACK and is grouped.
Compared with prior art, the embodiment of the present invention makes terminal carry out code block to downlink data by instruction code block packet count
Grouping, and code-aiming block grouping carries out verifying and determining the code block grouping that downlink retransmits, and solves 5G communication system high-throughput business
Data retransmit problem, realize throughput of system increase while, reduce system feedback and resource instruction expense.
As shown in fig. 6, the present embodiment discloses a kind of terminal, it may include with lower unit：Receiving unit 61, cutting unit 62,
Generation unit 63 and transmission unit 64, constituent parts are described as follows：
Receiving unit 61, for receiving the downlink data and Downlink Control Information of base station transmission；Wherein, the downlink control
Information processed carries code block packet count instruction information；
Cutting unit 62 is split the downlink data, obtains multiple code blocks for being based on the code block packet count
Grouping；
Generation unit 63 generates downlink retransmission instruction information for verifying to the grouping of each code block；Wherein, under described
Row retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data；
Transmission unit 64, for the downlink retransmission instruction information to be sent to the base station, so that the base station determines
The code block grouping that downlink retransmits.
The present embodiment can realize embodiment of the method shown in fig. 5, therefore, illustrate and effect participates in side shown in fig. 5
Method embodiment, this embodiment is not repeated.
Compared with prior art, base station disclosed by the embodiments of the present invention makes terminal to lower line number by indicating code block packet count
According to code block grouping, and the code block grouping that code-aiming block grouping carries out verification and determining downlink retransmits is carried out, 5G communication system height is solved
The data of throughput services retransmit problem, and while realizing that throughput of system increases, the feedback and resource instruction for reducing system are opened
Pin.
As shown in fig. 7, the present embodiment discloses a kind of base station, including：Processor 701, memory 702,703 and of communication interface
Bus 704；
Wherein, the processor 701, memory 702, communication interface 703 complete mutual lead to by the bus 704
Letter；
The communication interface 703 is for the information transmission between external equipment；The external equipment is, for example, terminal；
The processor 701 is used to call the program instruction in the memory 702, to execute such as the relevant each side of Fig. 3
Method provided by method embodiment, for example including：
After base station determines the downlink data for existing and sending to target terminal, Downlink Control Information is generated；Wherein, the downlink
Control information carries code block packet count instruction information；
The downlink data and the Downlink Control Information are sent to the target terminal by the base station；
The base station receives the downlink retransmission instruction information that the target terminal is sent, and determines the code block point that downlink retransmits
Group；Wherein, the downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data.
The embodiment of the present invention also provides a kind of non-transient computer readable storage medium, and the non-transient computer is readable to deposit
Storage media stores computer instruction, and the computer instruction executes the computer such as the relevant each method embodiment institute of Fig. 3
The method of offer, for example including：
After base station determines the downlink data for existing and sending to target terminal, Downlink Control Information is generated；Wherein, the downlink
Control information carries code block packet count instruction information；
The downlink data and the Downlink Control Information are sent to the target terminal by the base station；
The base station receives the downlink retransmission instruction information that the target terminal is sent, and determines the code block point that downlink retransmits
Group；Wherein, the downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data.
As shown in figure 8, the present embodiment provides a kind of terminals, including：Processor 801, memory 802,803 and of communication interface
Bus 804；
Wherein, the processor 801, memory 802, communication interface 803 complete mutual lead to by the bus 804
Letter；
The communication interface 803 is for the information transmission between external equipment；External equipment is, for example, base station.
The processor 801 is used to call the program instruction in the memory 802, to execute such as the relevant each side of Fig. 5
Method provided by method embodiment, for example including：
Terminal receives the downlink data and Downlink Control Information that base station is sent；Wherein, the Downlink Control Information carries
There is code block packet count to indicate information；
The terminal is based on the code block packet count, is split to the downlink data, obtains multiple code block groupings；
The terminal verifies the grouping of each code block, generates downlink retransmission instruction information；Wherein, the downlink re-transmission refers to
Show that information includes the feedback information of the corresponding each code block grouping of the downlink data；
The downlink retransmission instruction information is sent to the base station by the terminal, so that the base station determines that downlink retransmits
Code block grouping.
The embodiment of the present invention also provides a kind of non-transient computer readable storage medium, and the non-transient computer is readable to deposit
Storage media stores computer instruction, and the computer instruction executes the computer such as the relevant each method embodiment institute of Fig. 5
The method of offer, for example including：
Terminal receives the downlink data and Downlink Control Information that base station is sent；Wherein, the Downlink Control Information carries
There is code block packet count to indicate information；
The terminal is based on the code block packet count, is split to the downlink data, obtains multiple code block groupings；
The terminal verifies the grouping of each code block, generates downlink retransmission instruction information；Wherein, the downlink re-transmission refers to
Show that information includes the feedback information of the corresponding each code block grouping of the downlink data；
The downlink retransmission instruction information is sent to the base station by the terminal, so that the base station determines that downlink retransmits
Code block grouping.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the embodiment of the present invention, rather than right
It is limited；Although the embodiment of the present invention is described in detail referring to foregoing embodiments, the ordinary skill of this field
Personnel should understand that：It is still possible to modify the technical solutions described in the foregoing embodiments, or to part
Or all technical features are equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution
The range of each embodiment technical solution of the embodiment of the present invention.
Claims (10)
1. a kind of downlink retransmission method based on code block grouping, which is characterized in that including：
After base station determines the downlink data for existing and sending to target terminal, Downlink Control Information is generated；Wherein, the downlink control
Information carries code block packet count instruction information；
The downlink data and the Downlink Control Information are sent to the target terminal by the base station；
The base station receives the downlink retransmission instruction information that the target terminal is sent, and determines the code block grouping that downlink retransmits；Its
In, the downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data.
2. the method according to claim 1, wherein the base station determines the downlink for existing and sending to target terminal
After data, Downlink Control Information is generated, including：
After the base station determines the downlink data for existing and sending to target terminal, the determining communication channel between the target terminal
Channel state information；
The base station is based on the channel state information, determines the corresponding code block packet count of the channel state information；
The base station is based on the code block packet count, generates Downlink Control Information.
3. according to the method described in claim 2, it is characterized in that, the base station determines institute based on the channel state information
The corresponding code block packet count of channel state information is stated, including：
The base station is based on the channel state information and the first corresponding relationship, determines the corresponding letter of the channel state information
Road state grade；Wherein, first corresponding relationship is that predetermined channel state information is corresponding with channel status grade
Relationship；
The base station determines the corresponding code of channel status grade based on determining channel status grade and the second corresponding relationship
Block packet count；Wherein, second corresponding relationship is the corresponding relationship of predetermined channel status grade and code block packet count.
4. a kind of base station, which is characterized in that including：
Generation unit generates Downlink Control Information after determining the downlink data for existing and sending to target terminal；Wherein, institute
It states Downlink Control Information and carries code block packet count instruction information；
Transmission unit, for the downlink data and the Downlink Control Information to be sent to the target terminal；
Processing unit, the downlink retransmission instruction information sent for receiving the target terminal determine the code block point that downlink retransmits
Group；Wherein, the downlink retransmission instruction information includes the feedback information of the corresponding each code block grouping of the downlink data.
5. base station according to claim 4, which is characterized in that the generation unit is specifically used for：
After determining the downlink data for existing and sending to target terminal, the channel shape of the determining communication channel between the target terminal
State information；
Based on the channel state information, the corresponding code block packet count of the channel state information is determined；
Based on the code block packet count, Downlink Control Information is generated.
6. base station according to claim 5, which is characterized in that the generation unit is based on the channel state information, really
Determine the corresponding code block packet count of the channel state information, including：
Based on the channel state information and the first corresponding relationship, corresponding channel status of the channel state information etc. is determined
Grade；Wherein, first corresponding relationship is the corresponding relationship of predetermined channel state information and channel status grade；
Based on determining channel status grade and the second corresponding relationship, the corresponding code block grouping of the channel status grade is determined
Number；Wherein, second corresponding relationship is the corresponding relationship of predetermined channel status grade and code block packet count.
7. a kind of downlink retransmission method based on code block grouping, which is characterized in that including：
Terminal receives the downlink data and Downlink Control Information that base station is sent；Wherein, the Downlink Control Information carries code
Block packet count indicates information；
The terminal is based on the code block packet count, is split to the downlink data, obtains multiple code block groupings；
The terminal verifies the grouping of each code block, generates downlink retransmission instruction information；Wherein, the downlink retransmission instruction letter
Breath includes the feedback information of the corresponding each code block grouping of the downlink data；
The downlink retransmission instruction information is sent to the base station by the terminal, so that the base station determines the code that downlink retransmits
Block grouping.
8. downlink retransmission method according to claim 7, which is characterized in that the terminal carries out school to the grouping of each code block
It tests, including：
The terminal carries out CRC check to all code blocks for including in the grouping of each code block respectively, if the institute for including in code block grouping
There is the CRC check of code block successful, then the feedback information of code block grouping is ACK；If the CRC of any of code block grouping code block
Verification failure, then the feedback information of code block grouping is NACK.
9. a kind of terminal, which is characterized in that including：
Receiving unit, for receiving the downlink data and Downlink Control Information of base station transmission；Wherein, the Downlink Control Information
Carry code block packet count instruction information；
Cutting unit is split the downlink data, obtains multiple code block groupings for being based on the code block packet count；
Generation unit generates downlink retransmission instruction information for verifying to the grouping of each code block；Wherein, the downlink retransmits
Indicate that information includes the feedback information of the corresponding each code block grouping of the downlink data；
Transmission unit, for the downlink retransmission instruction information to be sent to the base station, so that the base station determines downlink weight
The code block of biography is grouped.
10. terminal according to claim 9, which is characterized in that the generation unit verifies the grouping of each code block, wraps
It includes：
CRC check is carried out to all code blocks for including in the grouping of each code block respectively, if all code blocks for including in code block grouping
CRC check is successful, then the feedback information of code block grouping is ACK；If the CRC check of any of code block grouping code block is lost
It loses, then the feedback information of code block grouping is NACK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365239.2A CN108933642B (en) | 2017-05-22 | 2017-05-22 | Downlink retransmission method based on code block grouping, base station and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365239.2A CN108933642B (en) | 2017-05-22 | 2017-05-22 | Downlink retransmission method based on code block grouping, base station and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108933642A true CN108933642A (en) | 2018-12-04 |
| CN108933642B CN108933642B (en) | 2022-02-18 |
Family
ID=64449621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710365239.2A Expired - Fee Related CN108933642B (en) | 2017-05-22 | 2017-05-22 | Downlink retransmission method based on code block grouping, base station and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108933642B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020155161A1 (en) * | 2019-02-02 | 2020-08-06 | Zte Corporation | Method and apparatus for performing data packet retransmission in wireless communication system |
| CN112671511A (en) * | 2020-12-23 | 2021-04-16 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Parallel CRC (Cyclic redundancy check) method and system based on partial retransmission |
| CN112671517A (en) * | 2020-12-14 | 2021-04-16 | 中国电子科技集团公司第五十四研究所 | Data retransmission method based on time slot confirmation in mobile ad hoc network communication |
| CN112769527A (en) * | 2020-12-30 | 2021-05-07 | 鹏城实验室 | HARQ-ACK feedback method, device and terminal based on code block group |
| WO2024000562A1 (en) * | 2022-07-01 | 2024-01-04 | 新华三技术有限公司 | Data transmission method, apparatus, storage medium and electronic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301077A (en) * | 2013-07-16 | 2015-01-21 | 普天信息技术研究院有限公司 | Hybrid retransmission method |
-
2017
- 2017-05-22 CN CN201710365239.2A patent/CN108933642B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301077A (en) * | 2013-07-16 | 2015-01-21 | 普天信息技术研究院有限公司 | Hybrid retransmission method |
Non-Patent Citations (1)
| Title |
|---|
| LENOVO，MOTOROLA MOBILITY: "Discussion on enhanced HARQ feedback and CBG-based partial retransmission", 《3GPP》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020155161A1 (en) * | 2019-02-02 | 2020-08-06 | Zte Corporation | Method and apparatus for performing data packet retransmission in wireless communication system |
| US11968048B2 (en) | 2019-02-02 | 2024-04-23 | Zte Corporation | Method and apparatus for performing data packet retransmission in wireless communication system |
| CN112671517A (en) * | 2020-12-14 | 2021-04-16 | 中国电子科技集团公司第五十四研究所 | Data retransmission method based on time slot confirmation in mobile ad hoc network communication |
| CN112671517B (en) * | 2020-12-14 | 2022-04-08 | 中国电子科技集团公司第五十四研究所 | Data retransmission method based on time slot confirmation in mobile ad hoc network communication |
| CN112671511A (en) * | 2020-12-23 | 2021-04-16 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Parallel CRC (Cyclic redundancy check) method and system based on partial retransmission |
| CN112671511B (en) * | 2020-12-23 | 2022-03-18 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Parallel CRC (Cyclic redundancy check) method and system based on partial retransmission |
| CN112769527A (en) * | 2020-12-30 | 2021-05-07 | 鹏城实验室 | HARQ-ACK feedback method, device and terminal based on code block group |
| WO2024000562A1 (en) * | 2022-07-01 | 2024-01-04 | 新华三技术有限公司 | Data transmission method, apparatus, storage medium and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108933642B (en) | 2022-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10159069B2 (en) | Method, device and system for transmitting control information | |
| CN104301077B (en) | It is a kind of to mix the method retransmitted | |
| US10727985B2 (en) | Control information sending method and communications device | |
| CN108933642A (en) | A kind of downlink retransmission method, base station and terminal based on code block grouping | |
| CN105471549B (en) | Block based on the control of A-MPDU subframe position information confirms system and method | |
| CN110061816B (en) | Mobile communication system, network equipment, terminal equipment and data scheduling method | |
| CN106549734A (en) | A kind of transmission method of information, terminal and base station | |
| CN114866204B (en) | Transmission method, terminal equipment and base station | |
| CN110876204A (en) | Mobile communication system, network equipment, terminal equipment and data scheduling method | |
| CN105934907A (en) | Radio resource scheduling method and apparatus | |
| CN103378953B (en) | Mixed automatic retransmission request method and device | |
| EP3244562B1 (en) | User equipment and transmission method for acknowledgement information | |
| CN109152071A (en) | Data transmission instruction and data transmission method, base station, terminal and storage medium | |
| CN103999394B (en) | Data retransmission and feedback methods, and corresponding apparatus | |
| CN104579579B (en) | A kind of big data package transmission method and system | |
| JP2015530012A (en) | Data retransmission method, apparatus, and system | |
| CN109691006B (en) | Feedback response information sending method, receiving method, device and system | |
| CN109560896B (en) | Method and system for data transmission based on code block group in 5G system | |
| US11271686B2 (en) | Hybrid automatic repeat request acknowledgement and upload multiuser operation | |
| CN109474405A (en) | Method of counting, apparatus and system in multicarrier system | |
| CN106535335B (en) | A kind of Downlink Control Information implementation method optimizing ascending HARQ | |
| US11166284B2 (en) | Data transmission method, terminal, and base station | |
| CN109802800A (en) | A kind of communication means and equipment | |
| CN105071903B (en) | The confirmation method and device of a kind of feedback information | |
| CN108809508A (en) | Whether a kind of determining data are by the method and device destroyed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220218 |