CN109245849A - modulation coding method, device, base station and computer readable storage medium - Google Patents
modulation coding method, device, base station and computer readable storage medium Download PDFInfo
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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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
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/22—Traffic simulation tools or models
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- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
本发明提供一种高速移动场景下的调制编码方法、装置、基站及计算机可读存储介质。该方法包括：进行数据调度传输时，根据多个历史终端通过基站所覆盖小区时在预设测量时刻的信道质量，确定当前数据调度时刻的信道质量参考值；其中当前数据调度时刻相对于待传数据终端进入基站所覆盖小区的初始时刻的相对时长，等于所述预设测量时刻相对于对应的所述历史终端进入基站所覆盖小区的初始时刻的相对时长；根据所述信道质量参考值，确定所述当前数据调度时刻的调制与编码策略MCS等级。该方法能够解决采用现有技术的调制编码方法，测量时刻选择的MCS等级无法与调度时刻的信道质量相匹配，造成数据传输性能不佳的问题。
The present invention provides a modulation and coding method, a device, a base station and a computer-readable storage medium in a high-speed mobile scenario. The method includes: during data scheduling transmission, determining a channel quality reference value at the current data scheduling time according to the channel quality at a preset measurement time when multiple historical terminals pass through the cells covered by the base station; wherein the current data scheduling time is relative to the to-be-transmitted time. The relative duration of the initial moment when the data terminal enters the cell covered by the base station is equal to the relative duration of the preset measurement moment relative to the initial moment at which the corresponding historical terminal enters the cell covered by the base station; according to the channel quality reference value, determine The MCS level of the modulation and coding strategy at the current data scheduling moment. The method can solve the problem that the MCS level selected at the measurement moment cannot match the channel quality at the scheduling moment by using the modulation and coding method of the prior art, resulting in poor data transmission performance.
Description
Technical field
The present invention relates to mobile communication technology field, a kind of modulation coding method, device, base station and computer are referred in particular to
Readable storage medium storing program for executing.
Background technique
Currently, the construction scale of high-speed railway is constantly expanding, the speed of service is also constantly being accelerated.China express railway
The speed of service much has reached and more than 300km/h, and the speed of service of magnetic suspension train then can achieve 430km/h.It is based on
This faces 5G, and then prescribed terminal demodulation ability needs support the up to speed per hour of 500km/h to 3GPP.
Under the mobile context of such high speed, Doppler frequency shift and multidiameter delay etc. will cause serious wireless channel fast
Decline, channel are presented more apparent variation in a subframe, channel quality (Reference Signal Received Power RSRP, signal with
Interference plus noise ratio SINR etc.) acute variation can also occur, it data show that normal macrocell channel quality fluctuation range is about
± 3dB, and ± 9dB can be up in high-speed rail scene lower channel quality fluctuation.
Currently, base station use modulation coding method be in certain sub-frame of uplink or downlink subframe, by measurement or terminal it is anti-
Feedback obtains the relevant measured value of uplink/downlink channel quality, such as Reference Signal Received Power RSRP, Signal to Interference plus Noise Ratio
SINR, channel quality indicator (CQI) etc., the channel quality measurement then in next upstream or downstream scheduling subframe, according to last time
Value is corresponding to obtain the scheduling parameters such as modulation and coding strategy MCS grade, and for the transmission of uplink/downlink, i.e. measurement occurs with scheduling
In different subframes.This kind of adaptive modulation coding method is only applicable to channel variation slowly common movement speed scene, and face
To high-speed mobile scene, above-mentioned adaptive modulation coding method obviously can not be applicable in, the reason is that under High-speed Circumstance, channel quality
Variation is very fast, and the cell channel quality that last moment measurement obtains is difficult to match with the channel quality of scheduling instance later.
Based on above-mentioned analysis it is found that existing adaptive modulation coding method can not be suitable for the high-speed mobile scenes such as high-speed rail,
I.e. existing method can not track the quick variation of channel quality, can not be with scheduling instance according to the MCS grade of measurement moment selection
Channel quality match, seriously affect data transmission performance.
Summary of the invention
The purpose of technical solution of the present invention is to provide modulation coding method, device, base station under a kind of high-speed mobile scene
And computer readable storage medium, for solving the modulation coding method using the prior art, the MCS grade of measurement moment selection
It can not match with the channel quality of scheduling instance, cause the problem that data transmission performance is bad.
The embodiment of the present invention provides the modulation coding method under a kind of high-speed mobile scene, is applied to base station, wherein described
Method includes:
When carrying out data dispatch transmission, at the default measurement moment when passing through base station institute coverage cell according to multiple history terminals
Channel quality, determine the channel quality reference value of current data scheduling instance；Wherein current data scheduling instance relative to
The opposite duration that data terminal enters the initial time of base station institute coverage cell is passed, is equal to the default measurement moment relative to right
The history terminal answered enters the opposite duration of the initial time of base station institute coverage cell；
According to the channel quality reference value, modulation and coding strategy MCS of the current data scheduling instance etc. are determined
Grade.
Preferably, the modulation coding method, wherein described to pass through base station institute coverage cell according to multiple history terminals
When, include: in the step of presetting the channel quality for measuring the moment, determining the channel quality reference value of current data scheduling instance
According to the first list prestored, the corresponding channel quality reference value at the default measurement moment is determined；
Determine that the channel quality reference value of the current data scheduling instance is equal to the corresponding of the default measurement moment
Channel quality reference value；
The corresponding channel quality reference value for wherein having recorded multiple measurement moment in the first list and measuring the moment
Between corresponding relationship；The corresponding channel quality reference value is to pass through base station institute coverage cell according to multiple history terminals
When, it calculates and obtains in the channel quality measurements that the corresponding measurement moment carries out channel quality measurement acquisition；When the measurement
It carves as the relative instant from history terminal enters the initial time of base station institute coverage cell.
Preferably, the modulation coding method, wherein in the first list that the basis prestores, determine described default
Before the step of measuring the corresponding channel quality reference value at moment, the method also includes:
When obtaining to multiple history terminals by base station institute coverage cell, channel quality measurement is carried out at the different measurement moment
The second list of acquisition, wherein record has the different measurement moment and measures the channel quality measurements at moment in the second list
Between corresponding relationship；
Statistical disposition is carried out to the data in second list, obtains the first list.
Preferably, the modulation coding method, wherein the data in second list carry out statistical disposition, obtain
The first list the step of include:
Average or weighting is carried out to the channel quality measurements at measurement moment same in the second list respectively to handle, and is obtained
Obtain the channel quality reference value at corresponding measurement moment；
According to the channel quality reference value at each measurement moment and corresponding measurement moment, the first list is generated.
Preferably, the modulation coding method, wherein the method also includes:
When current multiple terminals are by base station institute coverage cell, channel quality measurement is carried out at the different measurement moment, is obtained
The channel quality measurement updated value at difference measurement moment；
According to the channel quality measurement updated value, the second list is updated.
Preferably, the modulation coding method, wherein according to the channel quality reference value, determine the current number
Include: according to the modulation and the step of coding strategy MCS grade of scheduling instance
According to the channel quality reference value and pre-stored third list, the current data scheduling instance is determined
MCS grade；
The corresponding pass between different channels quality references value and corresponding MCS grade is wherein had recorded in the third list
System.
Preferably, the modulation coding method, wherein the channel quality reference value according to determined by determines institute
After the modulation and coding strategy MCS grade of stating current data scheduling instance, the modulation coding method further include:
Transmission of the accounting base-station institute each terminal in coverage cell when the current data scheduling instance carries out data transmission
Error rate measurement value；
According to the transmission error rates measured value, to the channel matter of current data scheduling instance described in the third list
The corresponding MCS grade of amount reference value is adjusted.
Preferably, the modulation coding method, wherein it is described according to the transmission error rates measured value, to described
The step of corresponding MCS grade of the channel quality reference value of current data scheduling instance described in three lists is adjusted packet
It includes:
The transmission error rates measured value is handled, the transmission error rates ginseng of the current data scheduling instance is calculated
Examine value；
When the transmission error rates reference value is less than or equal to the first predetermined threshold value, then by current data scheduling instance
Preset step-length is turned up in the corresponding MCS grade of channel quality reference value；
When the transmission error rates reference value is more than or equal to the second predetermined threshold value, then by current data scheduling instance
The corresponding MCS grade of channel quality reference value turns down preset step-length；
Wherein second predetermined threshold value is greater than first predetermined threshold value.
Preferably, the modulation coding method, wherein when carrying out data dispatch transmission, according to multiple history terminals
By, in the channel quality at default measurement moment, determining the channel quality ginseng of current data scheduling instance when base station institute coverage cell
In the step of examining value:
When carrying out transmitting uplink data, when passing through base station institute coverage cell according to multiple history terminals in default measurement
The channel quality for carrying out uplink is carved, determines the channel quality reference value of current data scheduling instance；
When carrying out downlink data transmission, when passing through base station institute coverage cell according to multiple history terminals in default measurement
The channel quality for carrying out downlink transfer is carved, determines the channel quality reference value of current data scheduling instance.
The embodiment of the present invention also provides the modulating-coding device under a kind of high-speed mobile scene, is applied to base station, wherein institute
Stating modulating-coding device includes:
First determining module when for carrying out data dispatch transmission, is covered according to multiple history terminals by base station small
In the channel quality at default measurement moment when area, the channel quality reference value of current data scheduling instance is determined；Wherein current number
Enter the opposite duration of the initial time of base station institute coverage cell relative to data to be transferred terminal according to scheduling instance, is equal to described pre-
If the measurement moment enters the opposite duration of the initial time of base station institute coverage cell relative to the corresponding history terminal；
Second determining module, for determining the tune of the current data scheduling instance according to the channel quality reference value
System and coding strategy MCS grade.
The present invention also provides a kind of base stations, wherein the base station includes memory, processor and stores on a memory simultaneously
The computer program that can be run on a processor；Wherein, any one as above is realized when the processor executes computer program
The modulation coding method.
The embodiment of the present invention also provides a kind of computer readable storage medium, wherein the computer readable storage medium
Including memory, processor and store the computer program that can be run on a memory and on a processor；Wherein, the processing
Device realizes modulation coding method described in any one as above when executing computer program.
One or more embodiments of the invention at least has the advantages that
Modulation coding method described in the specific embodiment of the invention, using multiple history terminals in the default channel for measuring the moment
Quality determines the channel quality of current data scheduling instance, wherein relative to terminal enter base station institute coverage cell it is initial when
It carves, current data scheduling instance and default measurement moment are same relative instant, guarantee the measurement of channel quality using which
The same subframe of the relative time in base station institute coverage cell occurs with scheduling, to guarantee the accuracy of measurement with scheduling.
Detailed description of the invention
Fig. 1 is one of the flow diagram of modulation coding method described in the specific embodiment of the invention；
Fig. 2 is the flow diagram of step S110 in Fig. 1；
Fig. 3 is the two of the flow diagram of modulation coding method described in the specific embodiment of the invention；
Fig. 4 is the structural schematic diagram of modulating-coding device described in the specific embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
The specific embodiment of the invention provides the modulation coding method under a kind of high-speed mobile scene, is applied to base station, refering to
Shown in Fig. 1, which comprises
Step S110, when carrying out data dispatch transmission, pre- when passing through base station institute coverage cell according to multiple history terminals
If measuring the channel quality at moment, the channel quality reference value of current data scheduling instance is determined；When wherein current data is dispatched
The opposite duration for entering the initial time of base station institute coverage cell relative to data to be transferred terminal is carved, when being equal to the default measurement
Carve the opposite duration for entering the initial time of base station institute coverage cell relative to the corresponding history terminal；
S120 determines modulation and the coding strategy of the current data scheduling instance according to the channel quality reference value
MCS grade.
Modulation coding method described in the specific embodiment of the invention, using multiple history terminals in the default channel for measuring the moment
Quality determines the channel quality of current data scheduling instance, wherein relative to terminal enter base station institute coverage cell it is initial when
It carves, current data scheduling instance and default measurement moment are same relative instant, guarantee the measurement of channel quality using which
The same subframe of the relative time in base station institute coverage cell occurs with scheduling, to guarantee the accuracy of measurement with scheduling.
Specifically, in above-mentioned step S110, when carrying out transmitting uplink data, pass through base station according to multiple history terminals
The channel quality for carrying out uplink when institute coverage cell at the default measurement moment, determines the channel matter of current data scheduling instance
Measure reference value；
When carrying out downlink data transmission, when passing through base station institute coverage cell according to multiple history terminals in default measurement
The channel quality for carrying out downlink transfer is carved, determines the channel quality reference value of current data scheduling instance.
In addition, as shown in Fig. 2, when passing through base station institute coverage cell according to multiple history terminals, being preset in step S110
The channel quality at moment is measured, the step of determining the channel quality reference value of current data scheduling instance includes:
S111 determines the corresponding channel quality reference value at the default measurement moment according to the first list prestored；
S112 determines that the channel quality reference value of the current data scheduling instance is equal to the phase at the default measurement moment
Respective channels quality references value；
The corresponding channel quality reference value for wherein having recorded multiple measurement moment in the first list and measuring the moment
Between corresponding relationship；The corresponding channel quality reference value is to pass through base station institute coverage cell according to multiple history terminals
When, it calculates and obtains in the channel quality measurements that the corresponding measurement moment carries out channel quality measurement acquisition；When the measurement
It carves as the relative instant from history terminal enters the initial time of base station institute coverage cell.
Further, the first list above-mentioned for acquisition, before step S111, the modulation coding method further include:
When obtaining to multiple history terminals by base station institute coverage cell, channel quality measurement is carried out at the different measurement moment
The second list of acquisition, wherein record has the different measurement moment and measures the channel quality measurements at moment in the second list
Between corresponding relationship；
Statistical disposition is carried out to the data in second list, obtains the first list.
Using modulation coding method described in the specific embodiment of the invention, second list is stored in advance in base station, the second list
Middle record has when multiple history terminals are by base station institute coverage cell, carries out channel quality measurement at the different measurement moment respectively
The channel quality measurements of acquisition." measurement moment-channel quality measurements " can be used in the second list, and difference is one by one
The mode of corresponding record indicates the corresponding relationship between different measurement moment and the channel quality measurements for measuring the moment.
The modulation coding method as described in the specific embodiment of the invention is applied to high-speed mobile scene, namely is usually applied to
Bullet train passes through the scene of base station institute coverage cell, preferably, when bullet train passes through base station institute coverage cell, to high speed
Each terminal carries out channel quality measurement at the different measurement moment in train, formed the corresponding high speed list by when secondary series
Table, and while passing through for multiple bullet trains, is respectively formed corresponding second list, is respectively used to record each high speed column
Multiple terminals on vehicle, the corresponding relationship between different measurement moment and the channel quality measurements for measuring the moment.Preferably,
In each second list, each channel quality measurements are successively stored according to the sequencing at measurement moment.
Preferably, for convenience of calculating, it is identical for each quantity for measuring the channel quality measurements that the moment records respectively,
It is for example N number of.
In addition, terminal is in the different location of train, Er Qieyou by when bullet train passes through base station institute coverage cell
It is had differences in handling durations such as terminal itself measurement, switchings, different terminals switch to the absolute time of base station institute coverage cell
Difference, for the corresponding relationship between clear record measurement moment and corresponding channel quality measurements, the specific embodiment of the invention
In the modulation coding method, the mentioned measurement moment is that corresponding terminal is denoted as at the time of entering base station institute coverage cell
Initial time T0, the relative instant apart from the initial time.
Specifically, for the channel quality measurement of terminal each in bullet train, base station institute is switched into each terminal
Initial time T0 is denoted as at the time of coverage cell, when the channel quality when carrying out data transmission to terminal measures, wherein
Absolute duration at the time of measurement executes apart from initial time is determined as measurement moment recorded in second list, and corresponding note
Record measurement moment channel quality measurements obtained.
In addition, record has the channel quality of different measurement moment and the transmitting uplink data for measuring the moment to survey in second list
Corresponding relationship between magnitude when for the transmission of uplink data scheduling data, determines the channel quality reference of transmitting uplink data
Value；Also record has between different measurement moment and the channel quality measurements for the downlink data transmission for measuring the moment in second list
Corresponding relationship, for downlink data dispatching data transmission when, determine the channel quality reference value of downlink data transmission.
For example, can recorde transmitting uplink data (sub-frame of uplink) for " the out-hole run moment-in second list
The corresponding relationship of RSRP/SINR/CQI measured value "；Wherein, channel quality measurements include RSRP, SINR and/or CQI measurement
Value, but be not limited to only include those measured values.For downlink data transmission (downlink subframe), second list can recorde for
The corresponding relationship of " downlink measurement moment-channel state information CSI reports value "；Wherein, channel quality measurements include but unlimited
Value is reported in CSI.
Preferably, using modulation coding method described in the specific embodiment of the invention, further includes:
When current multiple terminals are by base station institute coverage cell, channel quality measurement is carried out at the different measurement moment, is obtained
The channel quality measurement updated value at difference measurement moment；
According to the channel quality measurement updated value, the second list is updated.
Using above-mentioned step, when each bullet train is by base station institute coverage cell, respectively to more on bullet train
The channel quality of a terminal measures, and according to the channel quality measurements for re-measuring acquisition, surveys to corresponding in second list
The channel quality measurements for measuring the moment carry out all or part of update, to replace in second list apart from the longer number of current time
According to dynamic changes scheduling parameter, the real-time change of adaptive channel.
Modulation coding method described in the specific embodiment of the invention, multiple second lists based on above-mentioned acquisition, the method
Further include:
Statistical disposition is carried out to the data in second list, obtains first list.
Specifically, statistical disposition is carried out to the data in second list, the concrete mode for obtaining first list can be with are as follows:
Average or weighting is carried out to the channel quality measurements at measurement moment same in second list respectively to handle, and obtains phase
The channel quality reference value at corresponding measurement moment；
According to the channel quality reference value at each measurement moment and corresponding measurement moment, first list is generated.
It wherein, can be with to the mode that is averaging processing of channel quality measurements at measurement moment same in second list
Are as follows: all channel quality measurements (such as can be N number of) at same measurement moment are carried out being averaged calculating；Alternatively, according to
The range of channel quality measurements sets L section, counts distribution situation of all channel quality measurements in each section,
The channel quality measurements chosen in the most section of distributed quantity carry out taking average calculating.
The mode for being weighted processing to the channel quality measurements at measurement moment same in second list can be with are as follows: contraposition
Channel quality measurements in different second lists set different weights, or the generation according to channel quality measurements
Different weights is arranged in time, such as it is considered that the data reliability closer apart from current time is higher, apart from current time
Remoter data reliability is lower, and the data of different confidence levels are arranged with different weights, and the higher weight of confidence level is higher,
Smoothing processing can be weighted to N number of channel quality measurements according to set weight based on this, calculate and obtain accordingly
Measure the channel quality reference value at moment；Alternatively, setting L section according to the range of channel quality measurements, all letters are counted
Distribution situation of the road quality measured values in each section, the channel quality measurements chosen in the most section of distributed quantity are adopted
It is weighted processing in fashion described above.
The above-mentioned data in second list carry out statistical disposition, obtain the channel quality reference value at corresponding measurement moment
Mode by way of example only, the several ways being specifically not limited to more than only including.
Based on above-mentioned processing mode, the channel quality reference value for obtaining each measurement moment can be calculated, it can be accurate
Ground reflects the channel quality at measurement moment.
Further, it according to Fig. 1, in step S120 described in the specific embodiment of the invention, is referred to according to the channel quality
Value, determines that the modulation of the current data scheduling instance includes: with the step of coding strategy MCS grade
According to channel quality reference value and pre-stored third list, the MCS grade of current data scheduling instance is determined；
The corresponding relationship between different channels quality references value and corresponding MCS grade is wherein had recorded in third list.
Specifically, the corresponding relationship recorded in the third list between channel quality reference value and MCS grade, can be with
The corresponding relationship being applicable in for existing common low speed cell, or particularly for the corresponding relationship of High-speed Circumstance.
Preferably, the third list for uplink is stored in advance in base station, wherein the channel of record transmitting uplink data
Corresponding relationship between quality references value and MCS grade；In addition, the third list for downlink transfer is also stored in advance, wherein
Record the corresponding relationship between the channel quality reference value and MCS grade of downlink data transmission.
Using the modulation coding method of specific embodiment of the invention above-mentioned steps, when carrying out transmitting uplink data, according to
For the record data in the third list of uplink, the channel matter at measurement moment corresponding with current data scheduling instance is inquired
Reference value is measured, determines corresponding MCS grade, is used for transmitting uplink data when current data scheduling instance；Carrying out lower line number
When according to transmission, according to the record data in the third list for downlink transfer, survey corresponding with current data scheduling instance is inquired
The channel quality reference value for measuring the moment, determines corresponding MCS grade, is used for downlink data when current data scheduling instance and passes
It is defeated.
Preferably, modulation coding method described in the specific embodiment of the invention, after step S120, the modulating-coding side
Method further include:
Transmission of the accounting base-station institute each terminal in coverage cell when the current data scheduling instance carries out data transmission
Error rate measurement value；
According to the transmission error rates measured value, to the channel matter of current data scheduling instance described in the third list
The corresponding MCS grade of amount reference value is adjusted.
Specifically, transmission error rates of each terminal when the current data scheduling instance carries out data transmission are being counted
When measured value, the bit error rate can be counted according to results such as the ACK/NACK that uplink/downlink transmits.
In addition, according to the transmission error rates measured value, to the channel of current data scheduling instance described in third list
The step of corresponding MCS grade of quality references value is adjusted include:
The transmission error rates measured value is handled, the transmission error rates ginseng of the current data scheduling instance is calculated
Examine value；
When the transmission error rates reference value is less than or equal to the first predetermined threshold value, then by current data scheduling instance
Preset step-length is turned up in the corresponding MCS grade of channel quality reference value；
When the transmission error rates reference value is more than or equal to the second predetermined threshold value, then by current data scheduling instance
The corresponding MCS grade of channel quality reference value turns down preset step-length；
Wherein second predetermined threshold value is greater than first predetermined threshold value.
Specifically, the transmission error rates measured value is handled, calculates the transmission of the current data scheduling instance
The mode of bit error rate reference value can be with are as follows: the transmission error rates for counting one or more terminals in current data scheduling instance measure
Value, is weighted the multiple transmission error rates measured values counted or average computation, obtains current data scheduling instance
Transmission error rates reference value.Wherein, multiple transmission error rates measured values are weighted or the concrete mode of average computation, it can
In a manner of refering to channel quality reference value is calculated above according to channel quality measurements, details are not described herein.
The transmission error rates reference value obtained is calculated based on aforesaid way, it can be by further with preset first
Predetermined threshold value X1, the second predetermined threshold value X2 are compared, and wherein X2 is greater than X1, determine the channel of current data scheduling instance
Quality references are worth the adjustment mode of corresponding MCS grade.
According to the above, when transmission error rates reference value is less than or equal to X1, it is believed that the MCS grade of current scheduling is inclined
It is low, then preset step-length is turned up in MCS grade；When transmission error rates reference value is more than or equal to X2, it is believed that current scheduling
MCS grade is higher, then MCS grade is turned down preset step-length；When transmission error rates reference value, which is less than X2, is greater than X1, then it is assumed that when
The MCS grade of preceding scheduling is moderate, does not need to adjust.
Above-mentioned MCS grade adjusted can be used for data transmission scheduling next time, to track the variation of channel in time,
The scheduling parameter of dynamic adjustment in due course.
In addition, different the first predetermined threshold values and is respectively set for transmitting uplink data and downlink data transmission
Two predetermined threshold values, and set different MCS level adjustment step-lengths.
According to the above, as shown in figure 3, using modulation coding method described in the specific embodiment of the invention specific implementation procedure
May include following step:
S310 stores second list, and when terminal is by base station institute coverage cell, carries out channel at the different measurement moment
Mass measurement is updated to the channel quality measurements at moment are accordingly measured in second list；
S320 carries out average or weighting to the channel quality measurements at measurement moment same in second list and handles, obtains
The channel quality reference value at corresponding measurement moment；According to the channel quality reference at each measurement moment and corresponding measurement moment
Value generates first list；
S330 determines the channel quality of current data scheduling instance according to first list when carrying out data dispatch transmission
Reference value；
S340 determines the MCS grade of current data scheduling instance according to third list；
S350, the accounting base-station institute each terminal in coverage cell is when the current data scheduling instance carries out data transmission
Transmission error rates measured value；
S360, according to transmission error rates measured value, to the channel quality of current data scheduling instance described in third list
The corresponding MCS grade of reference value is adjusted.
Modulation coding method described in the specific embodiment of the invention, by being preset to multiple history terminals when passing through cell
The channel quality measurements at measurement moment are handled, and obtain the channel quality reference value at the default measurement moment, then pass through letter
Road quality references value calculates acquisition, and this presets measurement moment corresponding MCS grade.The MCS grade at measurement moment is preset based on this,
The MCS grade with the scheduling instance that the default measurement moment is same relative instant can be accurately determined, with guarantee measurement with
The accuracy of scheduling avoids in existing modulation coding method, because channel variation is too fast, measures the channel matter at moment and scheduling instance
The problem of amount can not match.
On the other hand the specific embodiment of the invention also provides a kind of modulating-coding device, be applied to base station, as shown in figure 4,
The modulating-coding device includes:
First determining module when for carrying out data dispatch transmission, is covered according to multiple history terminals by base station small
In the channel quality at default measurement moment when area, the channel quality reference value of current data scheduling instance is determined；Wherein current number
Enter the opposite duration of the initial time of base station institute coverage cell relative to data to be transferred terminal according to scheduling instance, is equal to described pre-
If the measurement moment enters the opposite duration of the initial time of base station institute coverage cell relative to the corresponding history terminal；
Second determining module, for determining the tune of the current data scheduling instance according to the channel quality reference value
System and coding strategy MCS grade.
Further, as shown in figure 4, in the modulating-coding device, first determining module includes:
First determination unit, for determining the corresponding channel at the default measurement moment according to the first list prestored
Quality references value；
Second determination unit, for determining that it is described default that the channel quality reference value of the current data scheduling instance is equal to
Measure the corresponding channel quality reference value at moment；
The corresponding channel quality reference value for wherein having recorded multiple measurement moment in the first list and measuring the moment
Between corresponding relationship；The corresponding channel quality reference value is to pass through base station institute coverage cell according to multiple history terminals
When, it calculates and obtains in the channel quality measurements that the corresponding measurement moment carries out channel quality measurement acquisition；When the measurement
It carves as the relative instant from history terminal enters the initial time of base station institute coverage cell.
Further, the first determining module further include:
First statistic unit, when for obtaining to multiple history terminals by base station institute coverage cell, in different measurements
The second list for carrying out channel quality measurement acquisition is carved, wherein when record has different measurement moment and measurement in the second list
Corresponding relationship between the channel quality measurements at quarter；
Second statistic unit obtains the first list for carrying out statistical disposition to the data in second list.
Preferably, the second statistic unit includes:
Computation subunit carries out flat for the channel quality measurements respectively to the measurement moment same in the second list
Or weighting is handled, and obtains the channel quality reference value at corresponding measurement moment；
List generates subelement, for measuring moment and the corresponding channel quality reference value for measuring the moment according to each,
Generate the first list.
Further, the modulating-coding device further include:
Measurement module when for current multiple terminals by base station institute coverage cell, carries out channel at the different measurement moment
Mass measurement obtains the channel quality measurement updated value at different measurement moment；
Update module, for updating the second list according to the channel quality measurement updated value.
In addition, the second determining module is specifically used for:
According to the channel quality reference value and pre-stored third list, the current data scheduling instance is determined
MCS grade；
The corresponding pass between different channels quality references value and corresponding MCS grade is wherein had recorded in the third list
System.
Preferably, the modulating-coding device further include:
Error rate measurement module, for the accounting base-station institute each terminal in coverage cell the current data scheduling instance into
Transmission error rates measured value when row data are transmitted；
Level adjustment module is used for according to the transmission error rates measured value, to current number described in the third list
It is adjusted according to the corresponding MCS grade of the channel quality reference value of scheduling instance.
Wherein, the level adjustment module specifically includes:
Reference value computing unit calculates the current data tune for handling the transmission error rates measured value
Spend the transmission error rates reference value at moment；
The first adjustment unit, for when the transmission error rates reference value is less than or equal to the first predetermined threshold value, then will
Preset step-length is turned up in the corresponding MCS grade of the channel quality reference value of current data scheduling instance；
Second adjustment unit, for when the transmission error rates reference value is more than or equal to the second predetermined threshold value, then will
The corresponding MCS grade of the channel quality reference value of current data scheduling instance turns down preset step-length；
Wherein second predetermined threshold value is greater than first predetermined threshold value.
In addition, first determining module is gone through according to multiple in modulating-coding device described in the specific embodiment of the invention
Channel quality when history terminal passes through base station institute coverage cell at the default measurement moment, determines the channel of current data scheduling instance
When quality references value:
When carrying out transmitting uplink data, when passing through base station institute coverage cell according to multiple history terminals in default measurement
The channel quality for carrying out uplink is carved, determines the channel quality reference value of current data scheduling instance；
When carrying out downlink data transmission, when passing through base station institute coverage cell according to multiple history terminals in default measurement
The channel quality for carrying out downlink transfer is carved, determines the channel quality reference value of current data scheduling instance.
Modulating-coding device described in the specific embodiment of the invention, using multiple history terminals in the default channel for measuring the moment
Quality determines the channel quality of current data scheduling instance, wherein relative to terminal enter base station institute coverage cell it is initial when
It carves, current data scheduling instance and default measurement moment are same relative instant, guarantee the measurement of channel quality using which
The same subframe of the relative time in base station institute coverage cell occurs with scheduling, to guarantee the accuracy of measurement with scheduling.
In addition, the another aspect of the specific embodiment of the invention also provides a kind of base station, wherein the base station includes storage
Device, processor and storage are on a memory and the computer program that can run on a processor；Wherein, the processor executes meter
Modulation coding method described in any one as above is realized when calculation machine program.
On the other hand the specific embodiment of the invention also provides a kind of computer readable storage medium, described computer-readable to deposit
Storage media include memory, processor and storage on a memory and the computer program that can run on a processor；Wherein, institute
It states when processor executes computer program and realizes modulation coding method described in any one as above.
Those skilled in the art, which should be able to understand, realizes as above any one modulation coding method when executing computer program
Base station and computer readable storage medium specific implementation, be not described in detail herein.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come
It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.
Claims (12)
1. the modulation coding method under a kind of high-speed mobile scene is applied to base station, which is characterized in that the described method includes:
When carrying out data dispatch transmission, in the default letter for measuring the moment when passing through base station institute coverage cell according to multiple history terminals
Road quality determines the channel quality reference value of current data scheduling instance；Wherein current data scheduling instance is relative to number to be passed
Enter the opposite duration of the initial time of base station institute coverage cell according to terminal, is equal to the default measurement moment relative to corresponding
The history terminal enters the opposite duration of the initial time of base station institute coverage cell；
According to the channel quality reference value, the modulation and coding strategy MCS grade of the current data scheduling instance are determined.
2. modulation coding method according to claim 1, which is characterized in that described to pass through base station according to multiple history terminals
When institute coverage cell, in the channel quality at default measurement moment, the channel quality reference value of current data scheduling instance is determined
Step includes:
According to the first list prestored, the corresponding channel quality reference value at the default measurement moment is determined；
Determine that the channel quality reference value of the current data scheduling instance is equal to the corresponding channel at the default measurement moment
Quality references value；
It is wherein had recorded in the first list between multiple measurement moment and the corresponding channel quality reference value for measuring the moment
Corresponding relationship；The corresponding channel quality reference value be according to multiple history terminals by base station institute coverage cell when,
The channel quality measurements that the corresponding measurement moment carries out channel quality measurement acquisition, which calculate, to be obtained；The measurement moment be from
History terminal enters the relative instant that the initial time of base station institute coverage cell rises.
3. modulation coding method according to claim 2, which is characterized in that in the first list that the basis prestores, really
Before the step of corresponding channel quality reference value at the fixed default measurement moment, the method also includes:
When obtaining to multiple history terminals by base station institute coverage cell, channel quality measurement acquisition is carried out at the different measurement moment
Second list, wherein in the second list record have it is different measurement the moment and measure the moment channel quality measurements between
Corresponding relationship；
Statistical disposition is carried out to the data in second list, obtains the first list.
4. modulation coding method according to claim 3, which is characterized in that the data in second list are united
Meter processing, the step of obtaining the first list include:
Average or weighting is carried out to the channel quality measurements at measurement moment same in the second list respectively to handle, and obtains phase
The channel quality reference value at corresponding measurement moment；
According to the channel quality reference value at each measurement moment and corresponding measurement moment, the first list is generated.
5. modulation coding method according to claim 3, which is characterized in that the method also includes:
When current multiple terminals are by base station institute coverage cell, channel quality measurement is carried out at the different measurement moment, is obtained different
Measure the channel quality measurement updated value at moment；
According to the channel quality measurement updated value, the second list is updated.
6. modulation coding method according to claim 1, which is characterized in that according to the channel quality reference value, determine
The modulation of the current data scheduling instance includes: with the step of coding strategy MCS grade
According to the channel quality reference value and pre-stored third list, the MCS of the current data scheduling instance is determined
Grade；
The corresponding relationship between different channels quality references value and corresponding MCS grade is wherein had recorded in the third list.
7. modulation coding method according to claim 6, which is characterized in that the reference of the channel quality according to determined by
Value, after the modulation and coding strategy MCS grade that determine the current data scheduling instance, the modulation coding method is also wrapped
It includes:
Transmission error code of the accounting base-station institute each terminal in coverage cell when the current data scheduling instance carries out data transmission
Rate measured value；
According to the transmission error rates measured value, the channel quality of current data scheduling instance described in the third list is joined
The corresponding MCS grade of value is examined to be adjusted.
8. modulation coding method according to claim 7, which is characterized in that described to be measured according to the transmission error rates
Value, adjusts the corresponding MCS grade of the channel quality reference value of current data scheduling instance described in the third list
Whole step includes:
The transmission error rates measured value is handled, the transmission error rates reference of the current data scheduling instance is calculated
Value；
When the transmission error rates reference value is less than or equal to the first predetermined threshold value, then by the channel of current data scheduling instance
Quality references are worth corresponding MCS grade and preset step-length are turned up；
When the transmission error rates reference value is more than or equal to the second predetermined threshold value, then by the channel of current data scheduling instance
The corresponding MCS grade of quality references value turns down preset step-length；
Wherein second predetermined threshold value is greater than first predetermined threshold value.
9. modulation coding method according to claim 1, which is characterized in that when carrying out data dispatch transmission, according to more
Channel quality when a history terminal passes through base station institute coverage cell at the default measurement moment, determines current data scheduling instance
In the step of channel quality reference value:
When carrying out transmitting uplink data, when passing through base station institute coverage cell according to multiple history terminals the default measurement moment into
The channel quality of row uplink determines the channel quality reference value of current data scheduling instance；
When carrying out downlink data transmission, when passing through base station institute coverage cell according to multiple history terminals the default measurement moment into
The channel quality of row downlink transfer determines the channel quality reference value of current data scheduling instance.
10. the modulating-coding device under a kind of high-speed mobile scene is applied to base station, which is characterized in that the modulating-coding dress
It sets and includes:
First determining module, when for carrying out data dispatch transmission, when passing through base station institute coverage cell according to multiple history terminals
In the channel quality at default measurement moment, the channel quality reference value of current data scheduling instance is determined；Wherein current data tune
The opposite duration that the moment enters the initial time of base station institute coverage cell relative to data to be transferred terminal is spent, the default survey is equal to
The amount moment enters the opposite duration of the initial time of base station institute coverage cell relative to the corresponding history terminal；
Second determining module, for according to the channel quality reference value, determine the modulation of the current data scheduling instance with
Coding strategy MCS grade.
11. a kind of base station, which is characterized in that the base station includes memory, processor and storage on a memory and can locate
The computer program run on reason device；Wherein, it is realized when the processor executes computer program as claim 1 to 9 is any
Modulation coding method described in one.
12. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium includes memory, place
The computer program managing device and storage on a memory and can running on a processor；Wherein, the processor executes computer
Modulation coding method as claimed in any one of claims 1 to 9 is realized when program.
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| CN111277369A (en) * | 2020-01-20 | 2020-06-12 | 大连市共进科技有限公司 | Downlink scheduling strategy adjusting method, device and server |
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| CN114499746A (en) * | 2020-10-26 | 2022-05-13 | 大唐移动通信设备有限公司 | Method, device and base station for determining modulation and coding strategy MCS level |
| CN114499746B (en) * | 2020-10-26 | 2023-08-11 | 大唐移动通信设备有限公司 | Method, device and base station for determining Modulation and Coding Strategy (MCS) level |
| CN114826852A (en) * | 2022-03-17 | 2022-07-29 | 国网智能电网研究院有限公司 | Wireless communication method and device based on adjustable pulse width and communication terminal |
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