CN109687937A - Modulation coding scheme and number of repetition selection method and device - Google Patents
Modulation coding scheme and number of repetition selection method and device Download PDFInfo
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- CN109687937A CN109687937A CN201710996814.9A CN201710996814A CN109687937A CN 109687937 A CN109687937 A CN 109687937A CN 201710996814 A CN201710996814 A CN 201710996814A CN 109687937 A CN109687937 A CN 109687937A
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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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
- H04L1/0001—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
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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
- H04L1/0001—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
- H04L1/0026—Transmission of channel quality indication
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Abstract
The embodiment of the present invention discloses a kind of modulation coding scheme and number of repetition selection method and device, can realize on the basis of meeting error block rate requirement throughput-maximized.The method includes S1, user dispatching cycle reach when, determine NACK number according to the data in transmission the results list of the user of maintenance；S2, judgement know the NACK number not less than it is described transmission the results list configured length and the first numerical value product when, according to user's current cache amount size, and sub-band number and current MCS, number of repetition that user bandwidth ability is determining, inquire TBS mapping table, it determines the radio frames NF that the transport block size for meeting buffer size needs to occupy, MCS or number of repetition is adjusted according to NF；S3, described transmission the results list is emptied.
Description
Technical field
The present embodiments relate to the communications fields, and in particular to a kind of modulation coding scheme and number of repetition selection method and
Device.
Background technique
In broadband access system based on TD-LTE technology, system available bandwidth is divided into multiple sons continuously or discontinuously
Band uses orthogonal frequency division multiplexing (OFDM) technical transmission on each subband.According to function by sub-band division be synchronous subband, broadcast
Subband and service sub-band.Synchronous subband connects for sending downlink synchronous signal, broadcasting sub-band for downlink broadcast and uplink random
Enter, service sub-band is used for transmission business.In order to reduce terminal cost, system supports list band operating mode, and each physical channel must
It must be independently transmitted on each subband.Terminal selects work on all or part of subband according to the different of hardware capabilities, ability
Most weak terminal only works in list band.One typical application scenarios is electric system radio bandwidth access network, abbreviation TD-
LTE230 network, frequency spectrum it is discrete be distributed in 230MHz frequency range, each subband 25kHz.
Depth covering is supported in TD-LTE230 network requirement, to promote each physical channel transmission performance, is used and is repeated in time domain
Sending method, and periodicity sending is used to obtain time diversity gain.Therefore, the sequential relationship of data transmission is as follows: one
PDCCH (Physical Downlink Control Channel, full name in English are Physical Downlink Control Channel) in the period,
PDCCH sends uplink authorization information scheduling PUSCH, and (Physical Uplink Shared Channel, full name in English are Physical Uplink
Shared Channel) and/or downstream grants message scheduling PDSCH (Physical Downlink Shared Channel, full name in English Physical
Downlink Shared Channel), PDCCH transmission time depends on RRC, and (radio resource control, full name in English are
Radio Resource Control) message arrangement PDCCH maximum number of repetitions and uplink authorization and/or downstream grants configuration
PDCCH number of repetition；PDCCH last time repeat the end of transmission after next radio frames start transmit PUSCH and/or
PDSCH, the transmission block that the PUSCH transmission time depends on uplink authorization configuration occupy radio frames number and number of repetition, and PDSCH is passed
The transmission block that the defeated time depends on downstream grants configuration occupies radio frames number and number of repetition；The feedback information of uplink transmission block
(new data indicator, English are indicated by NDI in the uplink authorization information in the next PDCCH period for being spaced a PDCCH period
Literary full name is New Date Indicator), the feedback information of downstream transmission blocks repeats the end of transmission by PDSCH last time
The PUCCH that next radio frames start transmission afterwards is carried, and PUCCH occupies whole sub-frame of uplink of a radio frames.
The rule of data transmission is to pursue higher transmission rate on the basis of meeting error block rate requirement.In general,
PDSCH or PUSCH channel requirements Block Error Rate is less than or equal to 10%, provides MCS at different levels (modulation and coding plan by link level simulation
Slightly, full name in English is corresponding for Block Error Rate 10% under Modulation and Coding Scheme) and number of repetition at different levels
SINR, that is, demodulation threshold.MCS and number of repetition and the relationship of demodulation threshold are that MCS gets over high-order requirement under identical number of repetition
Demodulation threshold is bigger, and the demodulation threshold of the bigger requirement of number of repetition is smaller under identical MCS.
Therefore, base station needs to select suitable configured transmission under above-mentioned constraint condition, passes through PDCCH channel bearing
DCI (Downlink Control Information, full name in English are Downlink Control Information) is sent to user.
In the prior art, MCS and/or number of repetition are on the one hand selected according to SINR measured value, is not suitable for no SINR
The inaccurate situation of the SINR measured value that measured value is reported or reported；On the other hand, according to ACK, (confirmation character, full name in English are
Acknowledgement it) is only adjusted with NACK (character unconfirmed, full name in English are Not Acknowledgement) statistical result
Whole MCS does not account for MCS and the case where how number of repetition bidimensional factor adjusts.
Summary of the invention
In view of the shortcomings of the prior art and defect, the embodiment of the present invention provides a kind of modulation coding scheme and repeats time
Number selection method and device.
On the one hand, the embodiment of the present invention proposes a kind of modulation coding scheme and number of repetition selection method, comprising:
S1, user dispatching cycle reach when, according to the user of maintenance transmission the results list in data determine
NACK number, wherein list is added in ACK the or NACK feedback result for receiving the data packet of user every time, and ACK feedback result indicates
Data packet transmission success, NACK feedback result indicate data packet transmission failure；
S2, configured length and first numerical value of the NACK number not less than described transmission the results list are known in judgement
When product, the sub-band number and current MCS, number of repetition determined according to user's current cache amount size and user bandwidth ability,
TBS mapping table is inquired, determines the radio frames NF that the transport block size for meeting buffer size needs to occupy, MCS is adjusted according to NF
Or number of repetition；
S3, described transmission the results list is emptied.
It is preferably, described that MCS or number of repetition are adjusted according to NF, comprising:
When judgement knows that NF is equal to 1, judge whether number of repetition reaches maximum value, wherein the maximum value is in DCI
Both number of repetition maximum value as defined in format and PDSCH the or PUSCH radio frames maximum value of current PDCCH period defining
In the result that is minimized；
If the number of repetition does not reach the maximum value, the number of repetition is increased into a step-length；Or
If the number of repetition reaches the maximum value, further judge whether MCS is lowest-order MCS, if the MCS
It is the lowest-order MCS, then does not adjust the MCS；Otherwise, the MCS is reduced into a step-length.
It is preferably, described that MCS or number of repetition are adjusted according to NF, comprising:
When judgement knows that NF is greater than 1, judge whether MCS is lowest-order MCS；
If the MCS is not the lowest-order MCS, the MCS is reduced into a step-length；Or
If the MCS is the lowest-order MCS, further judge whether number of repetition reaches maximum value, if described heavy
Again number reaches the maximum value, then does not adjust the number of repetition；Otherwise, the number of repetition is increased into a step-length,
In, the maximum value is the PDSCH or PUSCH of the number of repetition maximum value as defined in DCI format and current PDCCH period defining
The result being minimized in radio frames maximum value the two.
Preferably, the S2, further includes:
Know the NACK number no more than the transmission configured length of the results list and multiplying for second value in judgement
Product, and when the sum of ACK and NACK number are equal to transmission the results list configured length in described transmission the results list, judge again
Again whether number is equal to 1；
MCS and number of repetition are adjusted according to judging result.
It is preferably, described that MCS and number of repetition are adjusted according to judging result, comprising:
If the number of repetition is equal to 1, further MCS whether most high-order MCS is judged, if it is, not adjusting described
MCS；Otherwise, the MCS is increased into a step-length；Or
If the number of repetition is greater than 1, the number of repetition is reduced into a step-length.
On the other hand, the embodiment of the present invention proposes a kind of modulation coding scheme and number of repetition selection device, comprising:
Computing unit, for user dispatching cycle arrival when, according in transmission the results list of the user of maintenance
Data determine NACK number, wherein list, ACK feedback is added in ACK the or NACK feedback result for receiving the data packet of user every time
As a result indicate that data packet transmission success, NACK feedback result indicate data packet transmission failure；
Adjustment unit, for judgement know the NACK number not less than it is described transmission the results list configured length with
When the product of the first numerical value, according to the determining sub-band number of user's current cache amount size and user bandwidth ability and currently
MCS, number of repetition inquire TBS mapping table, determine the radio frames NF that the transport block size for meeting buffer size needs to occupy,
MCS or number of repetition are adjusted according to NF；
Unit is emptied, for emptying described transmission the results list.
Preferably, the adjustment unit, is specifically used for:
When judgement knows that NF is equal to 1, judge whether number of repetition reaches maximum value, wherein the maximum value is in DCI
Both number of repetition maximum value as defined in format and PDSCH the or PUSCH radio frames maximum value of current PDCCH period defining
In the result that is minimized；
If the number of repetition does not reach the maximum value, the number of repetition is increased into a step-length；Or
If the number of repetition reaches the maximum value, further judge whether MCS is lowest-order MCS, if the MCS
It is the lowest-order MCS, then does not adjust the MCS；Otherwise, the MCS is reduced into a step-length.
Preferably, the adjustment unit, is specifically used for:
When judgement knows that NF is greater than 1, judge whether MCS is lowest-order MCS；
If the MCS is not the lowest-order MCS, the MCS is reduced into a step-length；Or
If the MCS is the lowest-order MCS, further judge whether number of repetition reaches maximum value, if described heavy
Again number reaches the maximum value, then does not adjust the number of repetition；Otherwise, the number of repetition is increased into a step-length,
In, the maximum value is the PDSCH or PUSCH of the number of repetition maximum value as defined in DCI format and current PDCCH period defining
The result being minimized in radio frames maximum value the two.
Preferably, the adjustment unit, further includes:
Judgment sub-unit, for knowing configured length of the NACK number no more than described transmission the results list in judgement
With the product of second value, and in described transmission the results list the sum of ACK and NACK number be equal to described transmission the results list match
When setting length, judge whether number of repetition is equal to 1；
Subelement is adjusted, for adjusting MCS and number of repetition according to judging result.
Preferably, the adjustment subelement, is specifically used for:
If the number of repetition is equal to 1, further MCS whether most high-order MCS is judged, if it is, not adjusting described
MCS；Otherwise, the MCS is increased into a step-length；Or
If the number of repetition is greater than 1, the number of repetition is reduced into a step-length.
The third aspect, the embodiment of the present invention provide a kind of electronic equipment, comprising: processor, memory, bus and are stored in
On memory and the computer program that can run on a processor；
Wherein, the processor, memory complete mutual communication by the bus；
The processor realizes the above method when executing the computer program.
Fourth aspect, the embodiment of the present invention provide a kind of non-transient computer readable storage medium, on the storage medium
It is stored with computer program, which realizes the above method when being executed by processor.
Modulation coding scheme provided in an embodiment of the present invention and number of repetition selection method and device, are used by real-time monitoring
The ACK/NACK feedback result of family transmission, counts the Block Error Rate of a period of time, the variations reflected according to Block Error Rate
The decision of MCS and number of repetition is adjusted, basic principle is that MCS or up-regulation number of repetition are lowered when channel quality is deteriorated；
MCS is raised when channel quality improves or lowers number of repetition, and handling capacity can be realized on the basis of meeting error block rate requirement
It maximizes, this programme is based on ACK and NACK statistical result adjustment MCS and number of repetition, tracking channel circumstance variation, and is not take up
Additional interface-free resources, report suitable for no SINR or SINR reports inaccurate scene.
Detailed description of the invention
Fig. 1 is the flow diagram of one embodiment of modulation coding scheme of the embodiment of the present invention and number of repetition selection method；
Fig. 2 is the structural schematic diagram of one embodiment of modulation coding scheme of the embodiment of the present invention and number of repetition selection device；
Fig. 3 is the entity structure schematic diagram of a kind of electronic equipment 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.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, the range of protection of the embodiment of the present invention is belonged to.
Referring to Fig. 1, the present embodiment discloses a kind of modulation coding scheme and number of repetition selection method, comprising:
S1, user dispatching cycle reach when, according to the user of maintenance transmission the results list in data determine
NACK number, wherein list is added in ACK the or NACK feedback result for receiving the data packet of user every time, and ACK feedback result indicates
Data packet transmission success, NACK feedback result indicate data packet transmission failure；
S2, configured length and first numerical value of the NACK number not less than described transmission the results list are known in judgement
(value can according to need setting, such as when taking product 10%), according to user's current cache amount size and user bandwidth
Sub-band number, current MCS and the number of repetition that ability determines inquire TBS mapping table, determine the transport block size for meeting buffer size
The radio frames NF for needing to occupy adjusts MCS or number of repetition according to NF；
S3, described transmission the results list is emptied.
Modulation coding scheme provided in an embodiment of the present invention and number of repetition selection method, by real-time monitoring, user is transmitted
ACK/NACK feedback result, count the Block Error Rate of a period of time, make tune according to the variations that Block Error Rate is reflected
The decision of whole MCS and number of repetition can be realized throughput-maximized on the basis of meeting error block rate requirement.
Modulation coding scheme of the embodiment of the present invention and number of repetition selection method are described in detail below.
Transmission the results list of base station maintenance user, list length is configurable, indicates that BLER observation window is long.Use is received every time
List is added in ACK the or NACK feedback result of the data packet at family, wherein ACK indicates data packet transmission success, and NACK indicates data
Packet transmission failure.
It is reached whenever the dispatching cycle of user, according to the data in transmission the results list, carries out following judgement:
1, when NACK number >=transmission the results list configured length the first numerical value of *,
According to user's current cache amount size, in the determining sub-band number of user bandwidth ability and current MCS, number of repetition
Under, inquiry TBS mapping table, the radio frames i.e. NF that the determining transport block size for meeting buffer size needs to occupy, NF >=1.Sentence
Disconnected NF is equal to 1 and is also greater than 1, divides the following two kinds situation:
(1) do you when NF is equal to 1, judge that number of repetition reaches maximum value? here maximum value is provided in DCI format
Number of repetition maximum value and current PDCCH period defining PDSCH or PUSCH radio frames maximum value the two in take minimum
Value.If number of repetition does not reach maximum value, number of repetition increases a step-length, and (step-length mentioned herein be can according to need
Setting, such as several gears within the scope of authority)；If number of repetition has reached the maximum value, further whether MCS is judged
Lowest-order MCS (lowest-order MCS refers to the lowest gear of MCS within the scope of authority)? if it is, not adjusting；Otherwise, MCS subtracts
A small step-length.
(2) do you when NF is greater than 1, judge that MCS is lowest-order MCS? reduce a step if not lowest-order MCS, MCS
It is long；Do you if it is lowest-order MCS, further judge that number of repetition reaches maximum value? if it is, not adjusting；Otherwise, it repeats
Number increases a step-length.
After adjustment, empty user transmits the results list.
2, when (second value can according to need to be set NACK number≤transmission the results list configured length * second value
Set, for example, be set as 1%) and ACK+NACK total number be equal to transmission the results list configured length when, judge that number of repetition is
It is no to be equal to 1?
If being equal to 1, further judge whether most (most high-order MCS refers to MCS within the scope of authority most to high-order MCS to MCS
High tap position)? if it is, not adjusting；Otherwise, MCS increases a step-length.Or if it is greater than 1, number of repetition reduces a step
It is long.
After adjustment, empty user transmits the results list.
The ratio of NACK number and the configured length of transmission the results list indicates Block Error Rate, and reflection is channel quality
Quality.MCS or up-regulation number of repetition are lowered when channel quality is deteriorated；MCS is raised when channel quality improves or is lowered repeats
Number is realized throughput-maximized on the basis of meeting error block rate requirement.Specifically, when channel quality is deteriorated, work as user
When the occupancy radio frames of transmission block needed for buffer memory is smaller are 1, number of repetition is preferentially raised, MCS is secondly lowered；Conversely, preferential
MCS is lowered, number of repetition is secondly raised.And channel quality preferentially lowers number of repetition when improving, and secondly raises MCS.
Referring to Fig. 2, the present embodiment discloses a kind of modulation coding scheme and number of repetition selection device, comprising:
Computing unit 1, for user dispatching cycle arrival when, according in transmission the results list of the user of maintenance
Data determine NACK number, wherein list, ACK feedback is added in ACK the or NACK feedback result for receiving the data packet of user every time
As a result indicate that data packet transmission success, NACK feedback result indicate data packet transmission failure；
Adjustment unit 2, for knowing configured length of the NACK number not less than described transmission the results list in judgement
When with the product of the first numerical value, the sub-band number that is determined according to user's current cache amount size and user bandwidth ability and current
MCS, number of repetition inquire TBS mapping table, determine the radio frames NF that the transport block size for meeting buffer size needs to occupy,
MCS or number of repetition are adjusted according to NF；
Unit 3 is emptied, for emptying described transmission the results list.
Specifically, the computing unit 1 is arranged when reaching the dispatching cycle of user according to the transmission result of the user of maintenance
Data in table determine NACK number, wherein list is added in ACK the or NACK feedback result for receiving the data packet of user every time,
ACK feedback result indicates that data packet transmission success, NACK feedback result indicate data packet transmission failure；The adjustment unit 2 exists
Judgement know the NACK number not less than it is described transmission the results list configured length and the first numerical value product when, according to
The sub-band number and current MCS, number of repetition that family current cache amount size and user bandwidth ability determine, inquiry TBS mapping
Table, determines the radio frames NF that the transport block size for meeting buffer size needs to occupy, and adjusts MCS or number of repetition according to NF；
The unit 3 that empties empties described transmission the results list.
It is understood that first numerical value can according to need setting, for example it is set as 10%.
The ratio of NACK number and the configured length of transmission the results list indicates Block Error Rate, tune provided in an embodiment of the present invention
Coding mode and number of repetition selection device processed, the ACK/NACK feedback result transmitted by real-time monitoring user count one section
The Block Error Rate of time adjusts the decision of MCS and number of repetition, Neng Gou according to the variations that Block Error Rate is reflected
Meet realize on the basis of error block rate requirement it is throughput-maximized.
On the basis of aforementioned device embodiment, the adjustment unit specifically can be used for executing following steps:
When judgement knows that NF is equal to 1, judge whether number of repetition reaches maximum value, wherein the maximum value is in DCI
Both number of repetition maximum value as defined in format and PDSCH the or PUSCH radio frames maximum value of current PDCCH period defining
In the result that is minimized；
If the number of repetition does not reach the maximum value, the number of repetition is increased into a step-length；Or
If the number of repetition reaches the maximum value, further judge whether MCS is lowest-order MCS, if the MCS
It is the lowest-order MCS, then does not adjust the MCS；Otherwise, the MCS is reduced into a step-length.
In the embodiment of the present invention, configured length of the NACK number not less than described transmission the results list is known in judgement
When with the product of the first numerical value, i.e., when channel quality is deteriorated, it is 1 that the transmission block needed for user cache amount is smaller, which occupies radio frames,
When, number of repetition is preferentially raised, MCS is secondly lowered.
On the basis of aforementioned device embodiment, the adjustment unit specifically can be used for executing following steps:
When judgement knows that NF is greater than 1, judge whether MCS is lowest-order MCS；
If the MCS is not the lowest-order MCS, the MCS is reduced into a step-length；Or
If the MCS is the lowest-order MCS, further judge whether number of repetition reaches maximum value, if described heavy
Again number reaches the maximum value, then does not adjust the number of repetition；Otherwise, the number of repetition is increased into a step-length,
In, the maximum value is the PDSCH or PUSCH of the number of repetition maximum value as defined in DCI format and current PDCCH period defining
The result being minimized in radio frames maximum value the two.
In the embodiment of the present invention, configured length of the NACK number not less than described transmission the results list is known in judgement
When with the product of the first numerical value, i.e., when channel quality is deteriorated, the transmission block needed for user cache amount is smaller occupies radio frames and is
Greater than when, preferentially lower MCS, secondly raise number of repetition.
On the basis of aforementioned device embodiment, the adjustment unit can also include following knot not shown in the figure
Structure: judgment sub-unit and adjustment subelement；Wherein,
The judgment sub-unit knows configured length of the NACK number no more than described transmission the results list in judgement
With the product of second value, and in described transmission the results list the sum of ACK and NACK number be equal to described transmission the results list match
When setting length, judge whether number of repetition is equal to 1, and judging result is sent to the adjustment subelement；Later, the adjustment
Subelement adjusts MCS and number of repetition according to the judging result.
It is understood that the second value can according to need setting, for example it is set as 1%.
On the basis of aforementioned device embodiment, the adjustment subelement specifically can be used for executing following steps:
If the number of repetition is equal to 1, further MCS whether most high-order MCS is judged, if it is, not adjusting described
MCS；Otherwise, the MCS is increased into a step-length；Or
If the number of repetition is greater than 1, the number of repetition is reduced into a step-length.
In the embodiment of the present invention, configured length of the NACK number no more than described transmission the results list is known in judgement
When with the product of second value, i.e., when channel quality improves, number of repetition is preferentially lowered, secondly raises MCS.
The modulation coding scheme and number of repetition selection device of the present embodiment, can be used for executing preceding method embodiment
Technical solution, it is similar that the realization principle and technical effect are similar, and details are not described herein again.
The embodiment of the present invention proposes the scheme that suitable MCS and number of repetition are selected according to ACK and with NACK statistical result,
It realizes throughput-maximized, has the advantages that on the basis of meeting error block rate requirement
(1) by introducing the adjustment of number of repetition, different covering demands are adaptive to；
(2) based on ACK and NACK statistical result adjustment MCS and number of repetition, tracking channel circumstance variation, and it is not take up volume
Outer interface-free resources, report suitable for no SINR or SINR reports inaccurate scene.
Fig. 3 shows the entity structure schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention, as shown in figure 3, should
Electronic equipment may include: processor 11, memory 12, bus 13 and be stored on memory 12 and can transport on processor 11
Capable computer program；
Wherein, the processor 11, memory 12 complete mutual communication by the bus 13；
The processor 11 realizes method provided by above-mentioned each method embodiment when executing the computer program, such as
It include: to determine NACK number according to the data in transmission the results list of the user of maintenance when reaching the dispatching cycle of user,
Wherein, list is added in ACK the or NACK feedback result for receiving the data packet of user every time, and ACK feedback result indicates that data packet passes
Defeated success, NACK feedback result indicate data packet transmission failure；Know that the NACK number is tied not less than the transmission in judgement
It is true according to user's current cache amount size and user bandwidth ability when the configured length of fruit list and the product of the first numerical value
Fixed sub-band number and current MCS, number of repetition inquires TBS mapping table, determines that the transport block size needs for meeting buffer size account for
Radio frames NF adjusts MCS or number of repetition according to NF；Empty described transmission the results list.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium, is stored thereon with computer program, should
Method provided by above-mentioned each method embodiment is realized when computer program is executed by processor, for example, in the tune of user
When spending period arrival, NACK number is determined according to the data in transmission the results list of the user of maintenance, wherein receive use every time
List is added in ACK the or NACK feedback result of the data packet at family, and ACK feedback result indicates data packet transmission success, NACK feedback
As a result data packet transmission failure is indicated；Configured length of the NACK number not less than described transmission the results list is known in judgement
When with the product of the first numerical value, the sub-band number that is determined according to user's current cache amount size and user bandwidth ability and current
MCS, number of repetition inquire TBS mapping table, determine the radio frames NF that the transport block size for meeting buffer size needs to occupy,
MCS or number of repetition are adjusted according to NF；Empty described transmission the results list.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.Term " on ", "lower" etc. refer to
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplifies
Description, rather than the device or element of indication or suggestion meaning must have a particular orientation, constructed and grasped with specific orientation
Make, therefore is not considered as limiting the invention.Unless otherwise clearly defined and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
In specification of the invention, numerous specific details are set forth.Although it is understood that the embodiment of the present invention can
To practice without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this specification.Similarly, it should be understood that disclose in order to simplify the present invention and helps to understand respectively
One or more of a inventive aspect, in the above description of the exemplary embodiment of the present invention, each spy of the invention
Sign is grouped together into a single embodiment, figure, or description thereof sometimes.However, should not be by the method solution of the disclosure
Release is in reflect an intention that i.e. the claimed invention requires more than feature expressly recited in each claim
More features.More precisely, as the following claims reflect, inventive aspect is less than single reality disclosed above
Apply all features of example.Therefore, it then follows thus claims of specific embodiment are expressly incorporated in the specific embodiment,
It is wherein each that the claims themselves are regarded as separate embodiments of the invention.It should be noted that in the absence of conflict, this
The feature in embodiment and embodiment in application can be combined with each other.The invention is not limited to any single aspect,
It is not limited to any single embodiment, is also not limited to any combination and/or displacement of these aspects and/or embodiment.And
And can be used alone each aspect and/or embodiment of the invention or with other one or more aspects and/or its implementation
Example is used in combination.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (10)
1. a kind of modulation coding scheme and number of repetition selection method characterized by comprising
S1, user dispatching cycle reach when, determine NACK number according to the data in transmission the results list of the user of maintenance
Mesh, wherein list is added in ACK the or NACK feedback result for receiving the data packet of user every time, and ACK feedback result indicates data packet
Transmission success, NACK feedback result indicate data packet transmission failure；
S2, know the NACK number not less than the configured length of described transmission the results list and the product of the first numerical value in judgement
When, the sub-band number and current MCS, number of repetition determined according to user's current cache amount size and user bandwidth ability, inquiry
TBS mapping table determines the radio frames NF that the transport block size for meeting buffer size needs to occupy, according to NF adjustment MCS or again
Again it counts；
S3, described transmission the results list is emptied.
2. the method according to claim 1, wherein described adjust MCS or number of repetition according to NF, comprising:
When judgement knows that NF is equal to 1, judge whether number of repetition reaches maximum value, wherein the maximum value is in DCI format
It is taken in defined number of repetition maximum value and PDSCH or PUSCH radio frames maximum value the two of current PDCCH period defining
The result of minimum value；
If the number of repetition does not reach the maximum value, the number of repetition is increased into a step-length；Or
If the number of repetition reaches the maximum value, further judge whether MCS is lowest-order MCS, if the MCS is institute
Lowest-order MCS is stated, then does not adjust the MCS；Otherwise, the MCS is reduced into a step-length.
3. the method according to claim 1, wherein described adjust MCS or number of repetition according to NF, comprising:
When judgement knows that NF is greater than 1, judge whether MCS is lowest-order MCS；
If the MCS is not the lowest-order MCS, the MCS is reduced into a step-length；Or
If the MCS is the lowest-order MCS, further judge whether number of repetition reaches maximum value, if the repetition time
Number reaches the maximum value, then does not adjust the number of repetition；Otherwise, the number of repetition is increased into a step-length, wherein institute
State maximum value be the number of repetition maximum value as defined in DCI format and current PDCCH period defining PDSCH or PUSCH it is wireless
The result being minimized in frame number maximum value the two.
4. the method according to claim 1, wherein the S2, further includes:
Product of the NACK number no more than the configured length for transmitting the results list and second value is known in judgement, and
When the sum of ACK and NACK number are equal to transmission the results list configured length in described transmission the results list, judge to repeat secondary
Whether number is equal to 1；
MCS and number of repetition are adjusted according to judging result.
5. according to the method described in claim 4, it is characterized in that, described adjust MCS and number of repetition, packet according to judging result
It includes:
If the number of repetition is equal to 1, further MCS whether most high-order MCS is judged, if it is, not adjusting the MCS；
Otherwise, the MCS is increased into a step-length；Or
If the number of repetition is greater than 1, the number of repetition is reduced into a step-length.
6. a kind of modulation coding scheme and number of repetition selection device characterized by comprising
Computing unit, for user dispatching cycle arrival when, according to the user of maintenance transmission the results list in data
Determine NACK number, wherein list, ACK feedback result is added in ACK the or NACK feedback result for receiving the data packet of user every time
Indicate that data packet transmission success, NACK feedback result indicate data packet transmission failure；
Adjustment unit, for knowing configured length and first of the NACK number not less than described transmission the results list in judgement
When the product of numerical value, according to the sub-band number and current MCS of user's current cache amount size and the determination of user bandwidth ability, again
Again it counts, inquires TBS mapping table, the radio frames NF that the transport block size for meeting buffer size needs to occupy is determined, according to NF
Adjust MCS or number of repetition；
Unit is emptied, for emptying described transmission the results list.
7. device according to claim 6, which is characterized in that the adjustment unit is specifically used for:
When judgement knows that NF is equal to 1, judge whether number of repetition reaches maximum value, wherein the maximum value is in DCI format
It is taken in defined number of repetition maximum value and PDSCH or PUSCH radio frames maximum value the two of current PDCCH period defining
The result of minimum value；
If the number of repetition does not reach the maximum value, the number of repetition is increased into a step-length；Or
If the number of repetition reaches the maximum value, further judge whether MCS is lowest-order MCS, if the MCS is institute
Lowest-order MCS is stated, then does not adjust the MCS；Otherwise, the MCS is reduced into a step-length.
8. device according to claim 6, which is characterized in that the adjustment unit is specifically used for:
When judgement knows that NF is greater than 1, judge whether MCS is lowest-order MCS；
If the MCS is not the lowest-order MCS, the MCS is reduced into a step-length；Or
If the MCS is the lowest-order MCS, further judge whether number of repetition reaches maximum value, if the repetition time
Number reaches the maximum value, then does not adjust the number of repetition；Otherwise, the number of repetition is increased into a step-length, wherein institute
State maximum value be the number of repetition maximum value as defined in DCI format and current PDCCH period defining PDSCH or PUSCH it is wireless
The result being minimized in frame number maximum value the two.
9. a kind of electronic equipment characterized by comprising processor, memory, bus and storage on a memory and can located
The computer program run on reason device；
Wherein, the processor, memory complete mutual communication by the bus；
The processor realizes method according to any one of claims 1 to 5 when executing the computer program.
10. a kind of non-transient computer readable storage medium, which is characterized in that be stored with computer journey on the storage medium
Sequence, the computer program realize method according to any one of claims 1 to 5 when being executed by processor.
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