CN115208511A - Configuration method and device of modulation and coding strategy and electronic equipment - Google Patents
Configuration method and device of modulation and coding strategy and electronic equipment Download PDFInfo
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- 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
- H04L1/0016—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy involving special memory structures, e.g. look-up tables
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- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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Abstract
The invention provides a configuration method, a configuration device and electronic equipment of a modulation and coding strategy, wherein the method comprises the following steps: determining a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information; determining a target MCS table based on the current MCS table and a current unrestricted MCS value; and switching the current MCS table to the target MCS table, and determining a modulation scheme and a code rate based on the target MCS table. The method for configuring the modulation and coding strategy determines the MCS form according to the indication field in the uplink and downlink control information and switches the MCS form, can avoid signaling conflict, determines the target MCS form to be switched according to the current unlimited MCS value, adjusts the modulation and coding strategy in time, and can effectively improve the communication efficiency.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring a modulation and coding strategy, and an electronic device.
Background
With the development of mobile communication service demand, many organizations such as 3GPP are beginning to research New wireless communication systems, such as 5G NR (5 th Generation New RAT) system, for future mobile communication systems. In 5G NR systems, one important requirement is low latency and highly reliable communication.
In the current 5G NR system, a base station side dynamically adjusts parameters such as a Coding mode and a Modulation mode at a transmitting end based on an AMC (Adaptive Modulation and Coding) algorithm of an uplink and a downlink, so that the system provides a data rate as high as possible under the same bandwidth. Based on the AMC algorithm, the base station may select a suitable Modulation and Coding Scheme (MCS) after receiving the channel quality indicator reported by the ue, that is, select a suitable MCS index from an MCS (Modulation and Coding Scheme) table.
In the related art, when the unrestricted MCS value is greater than the highest value, the highest MCS value of the current MCS table is used for scheduling, or when the unrestricted MCS value is less than the lowest MCS value of the current table, the lowest MCS value of the current table is used for scheduling, which easily causes a higher bit error rate or a lower peak rate, and reduces communication efficiency.
Disclosure of Invention
The invention provides a configuration method and device of a modulation and coding strategy, electronic equipment, a device and electronic equipment, which are used for solving the defect of low communication efficiency in the prior art and achieving the effect of reasonably determining the modulation and coding strategy to improve the communication efficiency.
The invention provides a method for configuring a modulation and coding strategy, which comprises the following steps:
determining a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information;
determining a target MCS table based on the current MCS table and a current unrestricted MCS value;
switching the current MCS form to the target MCS form, and determining a modulation scheme and a code rate based on the target MCS form;
the MCS table comprises a second table, a first table and a third table from high to low in spectrum efficiency, and the MCS table is a modulation and coding strategy table defined for a Physical Downlink Shared Channel (PDSCH) in a 3GPP specification; the indication field is used for indicating that the MCS table is one of a first table, a second table or a third table.
According to the configuration method of the modulation and coding strategy provided by the present invention, before determining the current MCS table based on the indication field in the uplink and downlink control information, the method comprises:
and an indication field of the MCS table is defined in uplink and downlink control information.
According to the method for configuring the modulation and coding strategy provided by the present invention, the determining the target MCS table based on the current MCS table and the current unrestricted MCS value comprises:
determining the MCS value and the current unrestricted MCS value in the target time period when the outer loop MCS window length is reached under the condition that the current MCS table is the first table;
determining a first number of times that the MCS value is continuously less than or equal to 0 within the target time period under the condition that the current unrestricted MCS value is less than or equal to 0;
and determining the third table as the target MCS table under the condition that the first time is greater than a first preset value.
According to the configuration method of the modulation and coding strategy provided by the present invention, after determining the MCS value and the current unrestricted MCS value in the target time period when the outer loop MCS window length arrives under the condition that the current MCS table is the first table, the method comprises the following steps:
determining a second number of consecutive MCS values greater than or equal to 28 within the target period if the current unrestricted MCS value is greater than or equal to 28;
and determining the second table as the target MCS table when the second number of times is greater than a second preset value.
According to the method for configuring the modulation and coding strategy provided by the present invention, the determining the target MCS table based on the current MCS table and the current unrestricted MCS value comprises:
determining the MCS value and the current unlimited MCS value in the target time interval when the outer ring MCS window length reaches under the condition that the current MCS table is a second table;
determining a third number of times that the MCS value is continuously less than or equal to 0 within the target time period if the current unrestricted MCS value is less than or equal to 0;
and determining the first table as the target MCS table when the third time is greater than a third preset value.
According to the method for configuring the modulation and coding strategy provided by the present invention, the determining the target MCS table based on the current MCS table and the current unrestricted MCS value comprises:
determining the MCS value and the current unrestricted MCS value in the target time period when the outer loop MCS window length is reached under the condition that the current MCS table is a third table;
determining a fourth number of consecutive MCS values greater than or equal to 28 within the target period if the current unrestricted MCS value is greater than or equal to 28;
and determining the first table as the target MCS table when the fourth number is greater than a fourth preset value.
The invention also provides a configuration device of the modulation and coding strategy, which comprises the following steps:
the first processing module is used for determining a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information;
a second processing module, configured to determine a target MCS table based on the current MCS table and the current unrestricted MCS value;
a third processing module, configured to switch the current MCS table to the target MCS table, and determine a modulation scheme and a code rate based on the target MCS table;
the MCS table comprises a second table, a first table and a third table, the spectrum efficiency of which is from high to low, and the MCS table is a modulation and coding strategy table defined for a Physical Downlink Shared Channel (PDSCH) in a 3GPP specification; the indication field is used for indicating that the MCS table is one of a first table, a second table or a third table.
The present invention also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the modulation and coding strategy method as described in any one of the above when executing the program.
The invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a modulation and coding strategy method as described in any of the above.
The invention also provides a computer program product comprising a computer program which, when executed by a processor, implements a modulation and coding strategy method as described in any of the above.
According to the configuration method and device for the modulation and coding strategy and the electronic equipment, the MCS form is determined and switched according to the indication field in the uplink and downlink control information, signaling conflict can be avoided, meanwhile, the target MCS form needing to be switched is determined according to the current unlimited MCS value, the modulation and coding strategy is adjusted in time, and communication efficiency can be effectively improved.
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In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a configuration method of a modulation and coding strategy provided by the present invention;
fig. 2 is a schematic structural diagram of a configuration apparatus of a modulation and coding strategy provided in the present invention;
fig. 3 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The following describes a configuration method, an apparatus and an electronic device of a modulation and coding strategy according to the present invention with reference to fig. 1 to 3.
It should be noted that the method for configuring the modulation and coding strategy according to the embodiment of the present invention is applied to the base station side of the 5G NR system. In the embodiment of the present invention, the execution subject may be a controller of the base station or a server. The following describes a method for configuring a modulation and coding strategy according to an embodiment of the present invention with a server as an execution subject.
As shown in fig. 1, the method for configuring a modulation and coding strategy according to the embodiment of the present invention mainly includes step 110, step 120, and step 130.
It should be noted that the MCS table includes a second table, a first table and a third table with high to low spectrum efficiency, and the MCS table is a modulation and coding strategy table defined for the PDSCH in the physical downlink shared channel in the 3GPP specification.
It can be understood that MCS defines the effective number of bits that one RE (Resource Element) can carry. The higher the MCS index in one MCS table, the higher the number of effective bits that can be carried.
According to the AMC algorithm, the base station can select a suitable modulation and coding scheme after receiving the channel quality indication reported by the user equipment, i.e. select a suitable MCS index from the MCS table. The selection of the MCS index depends on the signal quality of the wireless link. The better the signal quality, the higher the MCS index number is selected. The higher the index number of MCS, the more useful bits can be transmitted in one symbol, while the poor signal quality can only select the MCS with low index number, i.e. the less useful data can be transmitted in one symbol.
In 3GPP specification 38.214, the PDSCH is provided with the following three tables: table ble5.1.3.1-1.
It can be understood that, according to the level of spectral efficiency, the first table of the embodiment of the present invention is: table5.1.3.1-1 MCS index Table 1for PDSCH, and the first Table is a 64QAM Table.
The second table of the embodiment of the present invention is: table 5.1.3.1-2 mcs index Table 2for PDSCH, the second Table is a 256QAM Table.
The third Table of the embodiment of the invention is a Table 5.1.3.1-3.
In this embodiment, the current modulation and coding strategy MCS table may be determined by reading the indication field in the uplink and downlink control information. The indication field is used for indicating that the MCS table is one of the first table, the second table or the third table.
For example, an "MCS table indicator" field in the downlink control information may be read, where the length of the field is 2 bits, and the values of the field are 00-MCS table 1, 01-MCS table2, and 10-MCS table 3, respectively, that is, "00" represents the first table, "01" represents the second table, and "10" represents the third table. Alternatively, the uplink Control Information DCI is determined by DCI (Downlink Control Information) transmitted in the Downlink in the uplink.
In the related art, the base station generally selects the MCS table to be used according to RRC (Radio Resource Control) signaling and physical layer signaling. Therefore, when MCS table switching is involved, RRC reconfiguration signaling is triggered to perform configuration, which further causes signaling collision.
To avoid signaling collisions, therefore, at step 110: before determining the current modulation and coding strategy MCS table based on the uplink and downlink control information, the method for configuring the modulation and coding strategy according to the embodiment of the present invention further includes: an indication field of the MCS table is defined in the uplink and downlink control information.
In other words, the "MCS table indicator" field in the above embodiment is defined in advance in the uplink and downlink control information.
It should be noted that the bits of the defined field may be an indicator field, a frequency domain resource allocation field, a time domain resource allocation field, a transmission configuration indication field, and the like belonging to the bandwidth part, and of course, may also be a newly added field in the DCI, where a specific type of the field is not limited herein.
In this embodiment, by customizing the MCS table indication field in the uplink and downlink control information, RRC reconfiguration can be avoided when performing subsequent MCS table switching, and thus the problem of signaling collision is not involved.
It is understood that the lower limit value of the MCS index number in the first table is 0, and the upper limit value thereof is 28. The lower limit value of the MCS index number in the second table is 0, and the upper limit value thereof is 27. The lower limit value of the MCS index number in the third table is 0, and the upper limit value thereof is 28.
According to the AMC algorithm, under the condition of extremely poor signal quality, the AMC algorithm may decrease the selected MCS index, even to a negative number, i.e. exceeding the lower limit value in the MCS table.
It can be appreciated that the AMC algorithm may raise the selected MCS index and even raise the MCS index beyond the upper limit in the MCS table under the condition of excellent signal quality.
The current unrestricted MCS value is the MCS index number which exceeds the upper and lower limits of the MCS index number in the MCS table determined by the current AMC algorithm.
In this case, because the spectrum efficiency of different MCS tables is different, the tables with different spectrum efficiencies can be reasonably switched according to the signal quality and the current unrestricted MCS value, so as to improve the transmission efficiency, avoid the problems of high error rate and low peak efficiency, and further improve the communication efficiency.
In other words, the MCS table can be switched according to the unrestricted MCS value determined by the AMC algorithm and the current MCS table.
The following describes a method for configuring a modulation and coding strategy according to an embodiment of the present invention, taking three different MCS tables as examples.
1. The current MCS table is the first table.
Step 120: based on the current MCS table and the current unrestricted MCS value, determining the target MCS table may include: and under the condition that the current MCS table is determined to be the first table, determining the MCS value in the target time period when the outer loop MCS window length arrives and the current unlimited MCS value.
It can be appreciated that when the outer loop MCS window length arrives, the current unrestricted MCS value is the sum of the inner loop MCS value and the outer loop MCS value.
The inner loop MCS value may be determined by a periodic reporting method. The outer loop MCS value may be counted for a certain number of packets by a scheduling window length counter in a target period.
In the case where the current unrestricted MCS value is less than or equal to 0, i.e., in the case where the unrestricted MCS value exceeds the lower limit of the first table, a first number of times that the MCS value is continuously less than or equal to 0 within the target period is determined.
In this case, a certain number of packets in the target time period may be counted to obtain each MCS value in the target time period to determine the first number, that is, to determine the number of times that the lower limit value is continuously exceeded.
Since the size of the spectrum efficiency of the whole first table is centered in the three MCS tables, when the first time is greater than the first preset value, the signal quality of the current link is poor, and the third table is determined as the target MCS table.
It should be noted that the first preset value may be determined according to the actual target duration and the communication content, and is not limited herein.
In other words, when the signal quality is poor, the third table with lower spectral efficiency is used as the target MCS table, so that communication with lower spectral efficiency and code rate can be ensured, and the error rate can be effectively reduced.
In some embodiments, after determining the MCS value and the currently unrestricted MCS value in the target time period when the outer loop MCS window length arrives under the condition that the current MCS table is the first table, the method for configuring the modulation and coding strategy according to the embodiment of the present invention further includes: in the case where the current unrestricted MCS value is greater than or equal to 28, i.e., in the case where the unrestricted MCS value exceeds the upper limit of the first table, a second number of times that the MCS value is continuously greater than or equal to 28 within the target period is determined.
In this case, the signal quality of the current link is good. And under the condition that the second secondary number is greater than a second preset value, determining a second table with higher spectral efficiency and code rate as a target MCS table.
It should be noted that the second preset value may be determined according to the actual target duration and the communication content, and is not limited herein.
Since the overall spectrum efficiency of the first table is centered in the three MCS tables, when the second number of times is greater than the second preset value, the signal quality of the current link is poor, and the third table is determined as the target MCS table.
In other words, when the signal quality is excellent, the second table with higher spectral efficiency is used as the target MCS table, so that communication with higher spectral efficiency and code rate can be ensured, the peak transmission rate can be effectively increased, and the communication efficiency can be further improved.
2. The current MCS table is the second table.
Step 120: based on the current MCS table and the current unrestricted MCS value, determining the target MCS table may include: and determining the MCS value in the target time period when the outer ring MCS window length arrives and the current unlimited MCS value under the condition that the current MCS table is determined to be the second table.
It is understood that the lower limit of the MCS value in the second table is 0. And under the condition that the current unlimited MCS value is less than or equal to 0, the signal quality of the link is extremely poor, and then the third time that the MCS value is less than or equal to 0 continuously in the target time period is determined.
The spectral efficiency and code rate of the second table are the highest of the three MCS tables, which is suitable for better signal quality environments. When the signal quality of the current link is determined to be extremely poor, the MCS table with lower spectrum efficiency and code rate needs to be switched to.
In some embodiments, the first table is determined to be the target MCS table in case the third number is greater than a third preset value.
Of course, in other embodiments, in the case that the third time is greater than the third preset value, the third table may also be determined as the target MCS table.
However, to ensure a higher peak transmission rate, a switch may be made to the first table first. After the modulation and coding strategy is configured and transmitted according to the first table, the MCS can be switched again according to the real-time unrestricted MCS value, that is, the processing is performed according to the situation when the current MCS table is the first table.
It should be noted that the third preset value may be determined according to the actual target duration and the communication content, and is not limited herein.
In the present embodiment, when the signal quality is poor, switching to the MCS table having lower spectral efficiency and lower code rate ensures communication at lower spectral efficiency and code rate, and can effectively reduce the error rate.
3. The current MCS table is the third table.
Step 120: based on the current MCS table and the current unrestricted MCS value, determining the target MCS table may include: and in the case that the current MCS table is determined to be the third table, determining the MCS value in the target time period when the outer-loop MCS window length arrives and the current unlimited MCS value.
It is understood that the upper limit of the MCS value in the third table is 28. In the case where the currently unrestricted MCS value is greater than or equal to 28, the signal quality of the link is excellent, and the fourth number of consecutive MCS values greater than or equal to 28 within the target period is determined.
The spectral efficiency and code rate of the third table are the lowest of the three MCS tables, which is suitable for environments with poor signal quality. When the signal quality of the current link is determined to be excellent, the MCS table with higher spectrum efficiency and code rate needs to be switched to.
In some embodiments, in the event that the fourth number is greater than the fourth preset value, the first table is determined to be the target MCS table.
In other embodiments, in the case that the fourth number is greater than the fourth preset value, the second table may also be determined as the target MCS table.
But to avoid higher bit error rates when the signal quality deteriorates, a switch to the first table may be made first.
It should be noted that the fourth preset value may be determined according to the actual target duration and the communication content, and is not limited herein.
In the present embodiment, when the signal quality is excellent, the MCS table with higher spectral efficiency is used as the target MCS table, so that it is ensured that communication is performed with higher spectral efficiency and higher code rate, the peak transmission rate can be effectively increased, and the communication efficiency can be further improved.
It can be understood that, after the target MCS table is determined, the current MCS table is switched to the target MCS table, and the modulation scheme and the code rate are determined according to the target MCS table.
It can be understood that, after the MCS table is switched to perform communication, the MCS can be switched again according to the real-time unrestricted MCS value, that is, the processing is performed according to different situations when the current MCS table is three tables.
According to the configuration method of the modulation and coding strategy provided by the embodiment of the invention, the MCS form is determined according to the indication field in the uplink and downlink control information and is switched, so that the signaling conflict can be avoided, meanwhile, the target MCS form to be switched is determined according to the current unlimited MCS value, the modulation and coding strategy is adjusted in time, and the communication efficiency can be effectively improved.
The following describes a configuration apparatus of modulation and coding strategy provided by the present invention, and the configuration apparatus of modulation and coding strategy described below and the configuration method of modulation and coding strategy described above may be referred to correspondingly.
As shown in fig. 2, the apparatus for configuring a modulation and coding strategy according to an embodiment of the present invention includes: a first processing module 210, a second processing module 220, and a third processing module 230.
The first processing module 210 is configured to determine a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information;
the second processing module 220 is configured to determine a target MCS table based on the current MCS table and the current unrestricted MCS value;
the third processing module 230 is configured to switch the current MCS table to a target MCS table, and determine a modulation scheme and a code rate based on the target MCS table;
the MCS table comprises a second table, a first table and a third table, the spectrum efficiency of which is from high to low, and the MCS table is a modulation and coding strategy table defined for a Physical Downlink Shared Channel (PDSCH) in a 3GPP specification; the indication field is used for indicating that the MCS table is one of the first table, the second table or the third table.
According to the configuration device of the modulation and coding strategy provided by the embodiment of the invention, the MCS form is determined according to the indication field in the uplink and downlink control information and is switched, so that the signaling conflict can be avoided, meanwhile, the target MCS form to be switched is determined according to the current unlimited MCS value, the modulation and coding strategy is adjusted in time, and the communication efficiency can be effectively improved.
In some embodiments, the apparatus for configuring a modulation and coding strategy according to the embodiments of the present invention further includes a fourth processing module, where the fourth processing module is configured to define an indication field of an MCS table in uplink and downlink control information.
In some embodiments, the second processing module 220 is further configured to determine, if the current MCS table is the first table, an MCS value and a current unrestricted MCS value within the target time period when the outer loop MCS window length arrives; under the condition that the current unlimited MCS value is less than or equal to 0, determining the first time of the MCS value which is less than or equal to 0 continuously in the target time interval; and determining the third table as the target MCS table under the condition that the first time is greater than the first preset value.
In some embodiments, the second processing module 220 is further configured to determine a second number of consecutive times that the MCS value is greater than or equal to 28 within the target time period if the current unrestricted MCS value is greater than or equal to 28; and determining the second table as the target MCS table under the condition that the second secondary number is greater than a second preset value.
In some embodiments, the second processing module 220 is further configured to determine, if the current MCS table is the second table, the MCS value and the current unrestricted MCS value within the target time period when the outer loop MCS window length arrives; under the condition that the current unlimited MCS value is less than or equal to 0, determining a third time that the MCS value is less than or equal to 0 continuously in the target time period; and determining the first table as the target MCS table under the condition that the third time is greater than the third preset value.
In some embodiments, the second processing module 220 is further configured to determine, if the current MCS table is the third table, an MCS value and a current unrestricted MCS value within the target time period when the outer loop MCS window length arrives; determining a fourth number of consecutive MCS values greater than or equal to 28 within the target period if the current unrestricted MCS value is greater than or equal to 28; and determining the first table as the target MCS table under the condition that the fourth time number is greater than the fourth preset value.
Fig. 3 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 3: a processor (processor) 310, a communication Interface (Communications Interface) 320, a memory (memory) 330 and a communication bus 340, wherein the processor 310, the communication Interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may invoke logic instructions in the memory 330 to perform a method of configuring a modulation and coding strategy, the method comprising: determining a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information; determining a target MCS table based on the current MCS table and the current unrestricted MCS value; switching the current MCS table to a target MCS table, and determining a modulation scheme and a code rate based on the target MCS table; the MCS table comprises a second table, a first table and a third table, the spectrum efficiency of which is from high to low, and the MCS table is a modulation and coding strategy table defined for a Physical Downlink Shared Channel (PDSCH) in a 3GPP specification; the indication field is used for indicating that the MCS table is one of the first table, the second table or the third table.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being storable on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, a computer is capable of executing the method for configuring a modulation and coding strategy provided by the above methods, the method comprising: determining a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information; determining a target MCS table based on the current MCS table and the current unrestricted MCS value; switching the current MCS table into a target MCS table, and determining a modulation scheme and a code rate based on the target MCS table; the MCS table comprises a second table, a first table and a third table, the spectrum efficiency of which is from high to low, and the MCS table is a modulation and coding strategy table defined for a Physical Downlink Shared Channel (PDSCH) in a 3GPP specification; the indication field is used for indicating that the MCS table is one of the first table, the second table or the third table.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing a method for configuring a modulation and coding strategy provided by the above methods, the method comprising: determining a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information; determining a target MCS table based on the current MCS table and the current unrestricted MCS value; switching the current MCS table into a target MCS table, and determining a modulation scheme and a code rate based on the target MCS table; the MCS table comprises a second table, a first table and a third table, the spectrum efficiency of which is from high to low, and the MCS table is a modulation and coding strategy table defined for a Physical Downlink Shared Channel (PDSCH) in a 3GPP specification; the indication field is used for indicating that the MCS table is one of the first table, the second table or the third table.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for configuring a modulation and coding scheme, comprising:
determining a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information;
determining a target MCS table based on the current MCS table and a current unrestricted MCS value;
switching the current MCS table to the target MCS table, and determining a modulation scheme and a code rate based on the target MCS table;
the MCS table comprises a second table, a first table and a third table, the spectrum efficiency of which is from high to low, and the MCS table is a modulation and coding strategy table defined for a Physical Downlink Shared Channel (PDSCH) in a 3GPP specification; the indication field is used for indicating that the MCS table is one of a first table, a second table or a third table.
2. The method of claim 1, wherein the determining the current MCS table based on the indication field in the uplink and downlink control information comprises:
and an indication field of the MCS table is defined in uplink and downlink control information.
3. The method of claim 1 or 2, wherein the determining a target MCS table based on the current MCS table and a current unrestricted MCS value comprises:
determining the MCS value and the current unlimited MCS value in the target time interval when the outer ring MCS window length reaches under the condition that the current MCS table is a first table;
determining a first number of times that the MCS value is continuously less than or equal to 0 within the target time period under the condition that the current unrestricted MCS value is less than or equal to 0;
and determining the third table as the target MCS table under the condition that the first time is greater than a first preset value.
4. The method of claim 3, wherein the determining the MCS value and the currently unrestricted MCS value within the target time period when the outer loop MCS window length arrives if the current MCS table is the first table comprises:
determining a second number of consecutive MCS values greater than or equal to 28 within the target period if the current unrestricted MCS value is greater than or equal to 28;
and determining the second table as the target MCS table under the condition that the second secondary number is greater than a second preset value.
5. The method of claim 1 or 2, wherein the determining a target MCS table based on the current MCS table and a current unrestricted MCS value comprises:
determining the MCS value and the current unrestricted MCS value in the target time period when the outer loop MCS window length is reached under the condition that the current MCS table is a second table;
determining a third number of times that the MCS value is continuously less than or equal to 0 within the target time period on the condition that the current unrestricted MCS value is less than or equal to 0;
and determining the first table as the target MCS table when the third time is greater than a third preset value.
6. The method of claim 1 or 2, wherein the determining a target MCS table based on the current MCS table and a current unrestricted MCS value comprises:
determining the MCS value and the current unlimited MCS value in the target time interval when the outer ring MCS window length reaches under the condition that the current MCS table is a third table;
determining a fourth number of consecutive MCS values greater than or equal to 28 within the target period if the current unrestricted MCS value is greater than or equal to 28;
and determining the first table as the target MCS table when the fourth number is greater than a fourth preset value.
7. An apparatus for configuring a modulation and coding scheme, comprising:
the first processing module is used for determining a current modulation and coding strategy MCS table based on an indication field in uplink and downlink control information;
a second processing module, configured to determine a target MCS table based on the current MCS table and the current unrestricted MCS value;
a third processing module, configured to switch the current MCS table to the target MCS table, and determine a modulation scheme and a code rate based on the target MCS table;
the MCS table comprises a second table, a first table and a third table, the spectrum efficiency of which is from high to low, and the MCS table is a modulation and coding strategy table defined for a Physical Downlink Shared Channel (PDSCH) in a 3GPP specification; the indication field is used for indicating that the MCS table is one of a first table, a second table or a third table.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for configuring the modulation and coding scheme according to any one of claims 1 to 6 when executing the program.
9. A non-transitory computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements a method for configuring a modulation and coding strategy according to any one of claims 1 to 6.
10. A computer program product comprising a computer program, wherein the computer program when executed by a processor implements a method of configuring a modulation and coding scheme according to any one of claims 1 to 6.
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