CN117641402A

CN117641402A - Information adjustment method, device, electronic equipment and storage medium

Info

Publication number: CN117641402A
Application number: CN202311604894.0A
Authority: CN
Inventors: 邓祝明; 傅扬升; 田茂新
Original assignee: Shanghai Xingsi Semiconductor Co ltd
Current assignee: Shanghai Xingsi Semiconductor Co ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-03-01

Abstract

The application provides an information adjustment method, an information adjustment device, electronic equipment and a storage medium, and relates to the technical field of communication. The method adjusts the obtained current CQI based on the current CQI, the BLER and the adjustment time interval, and the BLER can better reflect the real channel condition, so that the CQI obtained after the adjustment of the CQI by combining the BLER can better reflect the real channel quality, the accuracy of the obtained CQI is higher, the problem that the accuracy of the CQI measured by a terminal by adopting a self-defined algorithm is not high is solved, and the influence on the performance of a communication system is further reduced.

Description

Information adjustment method, device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information adjustment method, an information adjustment device, an electronic device, and a storage medium.

Background

The state of the wireless channel is usually constantly changed, so that in order to better adapt to the change of the channel state, the terminal can report the channel state information (Channel State Information, CSI) to the base station, so that the base station can select a corresponding resource scheduling and adjustment scheme according to the CSI reported by the terminal.

The channel quality indicator (channel quality indication, CQI) included in the CSI is a measurement standard of communication quality of the wireless channel, and the base station may determine a transport block data size, a coding manner, a modulation manner, and the like according to the CQI reported by the terminal.

In the existing communication system, the measurement mode of the CQI is not explicitly defined, and the measurement algorithm is generally designed by the terminal, and only needs to ensure that the decoding error rate (i.e., block error rate (Block Error Ratio, BLER)) of the physical downlink shared channel Physical Downlink Shared Channel, PDSCH meets the requirement.

However, the wireless channel is usually changed, and the CQI obtained by the terminal custom measurement algorithm often cannot truly reflect the actual channel quality, so that the accuracy of the CQI reported by the terminal is low, and the performance of the whole communication system is further affected.

Disclosure of Invention

An objective of the embodiments of the present application is to provide an information adjustment method, an information adjustment device, an electronic device, and a storage medium, so as to solve the problem in the prior art that CQI reported by a terminal is low in accuracy.

In a first aspect, an embodiment of the present application provides an information adjustment method, where the method includes:

acquiring a current Channel Quality Indicator (CQI);

And adjusting the current CQI according to the current CQI, the current block error rate BLER and the first adjustment time interval to obtain an adjusted CQI.

In the implementation process, the method adjusts the obtained current CQI based on the current CQI, the BLER and the adjustment time interval, and the BLER can better reflect the real channel condition, so that the CQI obtained after the adjustment of the CQI by combining the BLER can better reflect the real channel quality, the accuracy of the obtained CQI is higher, the problem that the accuracy of the CQI measured by a terminal by adopting an algorithm defined by the terminal is not high is solved, and the influence on the performance of a communication system is further reduced.

Optionally, the adjusting the current CQI according to the current CQI, the current block error rate BLER, and the first adjustment time interval to obtain an adjusted CQI includes:

if the current CQI is greater than or equal to a set threshold value and the first adjustment time interval is met, judging whether the current BLER is greater than a first set threshold value or not;

if yes, the current CQI is regulated down, and the regulated CQI is obtained;

if not, judging whether the current BLER is smaller than a second set threshold value;

and if the current BLER is smaller than the second set threshold, the current CQI is regulated to obtain regulated CQI, wherein the first set threshold is larger than the second set threshold.

In the implementation process, the CQI is flexibly adjusted according to the BLER, so that the adjusted CQI can more accurately reflect the channel condition.

Optionally, the adjusting the current CQI according to the current CQI, the obtained block error rate BLER, and the first adjustment time interval, to obtain an adjusted CQI includes:

if the current CQI is greater than or equal to a set threshold value and does not meet the first adjustment time interval, judging whether the current BLER is greater than a third set threshold value or not;

if yes, shortening the first adjustment time interval to a second adjustment time interval;

and when the second adjustment time interval is met, adjusting the current CQI to obtain an adjusted CQI.

In the implementation process, if the BLER value is too large, the channel condition is relatively poor, and the adjustment time interval of the CQI is shortened at the moment, so that the CQI can be quickly adjusted, and the base station can quickly sense the change condition of the channel according to the CQI reported by the terminal.

Optionally, when the second adjustment time interval is met, adjusting the current CQI to obtain an adjusted CQI, including:

re-calculating a BLER during the second adjustment time interval when the second adjustment time interval is satisfied;

And if the recalculated BLER is larger than a fourth set threshold, the current CQI is regulated down, and the regulated CQI is obtained, wherein the recalculated BLER is obtained based on the CRC result in the second regulation time interval.

In the implementation process, the recalculated BLER in the shortened adjustment time interval can reflect the real channel condition more accurately, so that the CQI reported by the terminal is more accurate.

Optionally, the first adjustment time interval is a duration of receiving a preset number of cyclic redundancy check CRC results, where the CRC results are CRC results of a primary downlink shared channel PDSCH scheduled by a downlink control channel PDCCH scrambled by a cell radio network temporary identifier C-RNTI.

In the implementation process, the CRC result of the PDSCH scheduled by the PDCCH scrambled by the C-RNTI is counted, so that the CQI reported by the terminal can truly reflect the demodulation performance of the MCS/CQI specified by the protocol after being adjusted.

Optionally, the time interval of the CRC results received in two adjacent times is within a set time threshold. This is because if a valid CRC result of PDSCH is not received for a long time, the statistical BLER is long before and cannot reflect the current channel condition well, so the CRC result received within the set time threshold is valid to adjust CQI based on BLER.

Optionally, the cumulative adjustment amount of the CQI is within a set range, where the cumulative adjustment amount refers to a total adjustment amount based on the CQI initially calculated by the terminal device;

and/or the number of the groups of groups,

after obtaining the adjusted CQI, the method further includes:

judging whether the adjusted CQI is within the range defined by the communication protocol, if not, readjusting the adjusted CQI which is larger than the upper limit of the range to the upper limit of the range, readjusting the adjusted CQI which is smaller than the lower limit of the range to the lower limit of the range

In the implementation process, the accumulated adjustment amount of the current CQI is within a set range. The problem that the CQI is too large to be adjusted and the consumed time is long when the CQI needs to be adjusted back is avoided, for example, if excessive CQI is adjusted due to sudden and short channel change, such as shielding of obstacles, holding of antennas and the like, the subsequent channel recovery needs a long time to be adjusted back when the channels are recovered to be normal, and the reported CQI can be ensured to meet the protocol specification and is analyzed by the base station.

In a second aspect, an embodiment of the present application provides an information adjustment apparatus, including:

the information acquisition module is used for acquiring the current channel quality indication CQI;

and the information adjustment module is used for adjusting the current CQI according to the current CQI, the current block error rate BLER and the first adjustment time interval to obtain an adjusted CQI.

In a third aspect, embodiments of the present application provide an electronic device comprising a processor and a memory storing computer readable instructions that, when executed by the processor, perform the steps of the method as provided in the first aspect above.

In a fourth aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method as provided in the first aspect above.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of an information adjustment method provided in an embodiment of the present application;

fig. 2 is a schematic diagram of an effect of adjusting CQI by counting BLER under different window lengths according to an embodiment of the present application;

fig. 3 is a flowchart of calculating a BLER according to an embodiment of the present application;

fig. 4 is a schematic diagram of a CQI adjustment process according to an embodiment of the present application;

FIG. 5 is a schematic diagram showing a comparison of simulation results provided in the embodiment of the present application;

fig. 6 is a block diagram of an information adjustment device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an electronic device for performing an information adjustment method according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

It should be noted that the terms "system" and "network" in embodiments of the present invention may be used interchangeably. "plurality" means two or more, and "plurality" may also be understood as "at least two" in this embodiment of the present invention. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/", unless otherwise specified, generally indicates that the associated object is an "or" relationship.

Before describing the specific implementation method of the present application, for convenience of understanding, a simple description is first provided for an application scenario related to the present application.

The channel state information fed back by the terminal to the base station is called CSI, and the base station can schedule according to the obtained CSI by using the capacity of the channel to the greatest extent, so as to obtain high throughput as much as possible.

The parameters of the channel state reflected by the CSI report mainly include:

beam information (CSI-RS Resource Indicator, CRI): the base station may use different narrow beams to transmit Channel state information reference signals (CSI-RS) to allow the terminal to measure, and after the terminal measures CSI of all beams, select a best beam to report to the base station, where the beam is indicated by reporting CSI-RS resource index;

rank Indicator (RI): under the reported beam (or the base station only configures one wide beam for reporting), the best spatial multiplexing layer number supported by the beam represents the optimal rank (rank) of the channel;

precoding matrix indication (Precoding Matrix Indicator, PMI): under the reported beam and the selected RI, the terminal calculates the best codebook selected. For an NR system, the codebook start represents a beamforming codebook of a digital end, different codebooks represent different beam directions, and for an LTE system, the codebook may represent the beamforming codebook of the digital end and may also represent a general precoding matrix.

CQI: indicating the highest channel quality that the terminal can support for signal transmission, i.e. the maximum spectral efficiency that the channel can transmit, in the selected combination of the best beam, RI, codebook.

The parameters are specified by each communication protocol, such as defining the range of RI, possible set of precoding, gear of CQI, etc., while the algorithm for measuring these CSI parameters is designed by the terminal itself, the protocol generally does not specify, and only some test cases are specified by the protocol to determine whether the algorithm of the terminal meets the performance requirement, and typically, the performance improvement obtained by using the CSI parameters reported by the terminal is selected under the conditions of using the CSI parameter scheduling and random scheduling reported by the terminal.

The existing algorithm for measuring and estimating the CSI of the terminal generally selects the optimal rank and codebook based on the channel capacity or mutual information, or designs a specific scheme to estimate the CSI for CSI parameters defined by different protocols, but the variables of CSI estimation are usually inaccurate due to the following factors:

(1) The CSI parameters themselves define errors, such as NR and LTE protocols define CQI as a limited maximum of 3 tables and 15, and the defined codebook can only represent a limited discrete direction;

(2) Because the time delay exists in the calculation of the CSI and the scheduling of the application to the service channel, the wireless channel is generally changed, and even if the terminal estimates the accurate CSI, the real-time channel condition cannot be reflected when the terminal is applied to the service channel;

(3) Some simplified algorithms of the terminal design may also affect the accuracy of CSI estimation.

The CQI estimated by the terminal using its own algorithm may not be accurate and the base station using the inaccurate CQI for scheduling and modulation may affect the performance of the entire communication system.

Therefore, the embodiment of the application provides an information adjustment method, which adjusts the currently obtained CQI based on the current CQI, the BLER and the adjustment time interval to obtain the adjusted CQI, and since the BLER can better reflect the real channel condition, the CQI obtained after the CQI is adjusted by combining with the BLER can better reflect the channel condition, the accuracy of the obtained CQI is higher, the problem that the accuracy of the CQI obtained by the terminal by adopting the algorithm defined by itself is not high is improved, and further, the influence on the performance of the communication system is reduced.

Referring to fig. 1, fig. 1 is a flowchart of an information adjustment method according to an embodiment of the present application, where the method includes the following steps:

Step S110: the current CQI is acquired.

The execution body of the information adjustment method in the embodiment of the present application is a terminal, and the current CQI may be calculated by the terminal according to an algorithm defined by the terminal, or may be a CQI obtained after adjustment according to the method in the present application. When in initial adjustment, the current CQI is calculated by the terminal according to a self-defined algorithm, the moment of calculating the CQI by the terminal can be flexibly set according to the actual situation, and the moment of reporting the CQI to the base station by the terminal can also be flexibly set according to the actual situation. And in the period from the time when the terminal calculates the CQI according to the self-defined algorithm to the time when the terminal reports the CQI, the CQI can be adjusted by using the method, for example, the first adjustment is to adjust the CQI obtained by the initial calculation of the terminal, at this time, the current CQI is the CQI obtained by the calculation of the terminal, and the second adjustment is the CQI obtained after the first adjustment.

Step S120: and adjusting the current CQI based on the current CQI, the current BLER and the first adjustment time interval to obtain the adjusted CQI.

The terminal can calculate and obtain the current Block Error Rate (BLER) in real time, and the BLER can truly reflect the channel condition, so that the current CQI is adjusted based on the obtained BLER, and the adjusted CQI can be more accurate.

The current CQI may be adjusted by: if the obtained BLER is larger than a certain threshold (which can be set according to the actual application scene), the current channel condition is severe, the current CQI can be regulated down, and if the obtained BLER is smaller than a set threshold (which can be set according to the actual application scene), the current channel condition is good, the current CQI can be regulated up. Alternatively, if the obtained BLER is within a certain setting range, no adjustment is required for the current CQI, i.e. its adjustment amount is 0. Therefore, the current CQI can be flexibly adjusted according to the BLER value, so that the adjusted CQI is more close to the real channel condition.

Or, the current CQI value, the current BLER and the first adjustment time interval may be combined to perform adjustment, for example, when the first adjustment time interval arrives, whether the current CQI value and the current BLER value meet the set conditions is determined, and if yes, the current CQI is adjusted, and the specific adjustment manner is described in detail in the following embodiments, which is not repeated herein.

In the implementation process, the BLER can better reflect the real channel condition, so that the CQI obtained after being regulated by combining with the BLER can better reflect the real channel quality, the accuracy of the CQI obtained is higher, the problem that the accuracy of the CQI measured by a terminal by adopting an algorithm defined by the terminal is not high is solved, and the influence on the performance of a communication system is further reduced.

On the basis of any embodiment of the present application, when the opportunity of reporting the CQI arrives, the terminal may report the adjusted CQI to the base station, and of course, the terminal may also use a self-defined algorithm to determine whether to report the adjusted CQI to the base station, for example, the terminal may determine whether the adjusted CQI is suitable (if yes, the protocol rule is satisfied), if not, the terminal may select to report the CQI before adjustment to the base station, or further adjust the adjusted CQI and report the CQI. The specific choice of whether to report the adjusted CQI can be flexibly set according to the actual situation, and of course, in the actual application, if the adjusted CQI accords with the protocol specification, the terminal can choose to report the adjusted CQI directly, and if the adjusted CQI does not accord with the protocol specification, the terminal can again adjust to the range of the protocol specification and report.

In other words, after the CQI is adjusted, the terminal may also check whether the reported CQI conforms to the protocol, for example, determine whether the adjusted CQI is within a range defined by the communication protocol, and if not, adjust the adjusted CQI again to be within the range defined by the communication protocol, for example, adjust the adjusted CQI greater than the upper limit of the range to be the upper limit of the range again, and adjust the adjusted CQI less than the lower limit of the range to be the lower limit of the range again. Therefore, the reported CQI can meet the protocol specification and is analyzed by the base station.

For example, the communication protocol specifies that the range of effective CQI values should be 1-15, and if the adjusted CQI value is greater than 15, the CQI value may be adjusted to 15 and then reported, and if the adjusted CQI value is less than 1, the CQI value may be adjusted to 1 and then reported. In actual practice, the CQI may be adjusted to a range of 1 to 15.

Based on the above embodiment, in order to avoid the problem that frequent adjustment of CQI causes occupation of more resources of the terminal and thus higher power consumption of the terminal, adjustment of the current CQI is performed after the corresponding adjustment condition is satisfied.

That is, the CQI is not required to be adjusted in real time, but is adjusted when the corresponding adjustment condition is satisfied, so that the resource occupation of the terminal can be reduced, and the power consumption of the terminal can be reduced.

On the basis of the above embodiment, in order to accurately reflect the current demodulation performance of the terminal, the current CQI may be adjusted in a short term or a long term, so the adjustment conditions may include at least one of the following: the current CQI is greater than or equal to a set threshold, the first adjustment time interval is satisfied, and the current BLER is greater than the first set threshold.

The adjustment condition may be understood as long-term adjustment if the adjustment condition includes that the first adjustment time interval is satisfied, and may be understood as short-term adjustment if the adjustment condition includes that the current CQI is greater than or equal to a set threshold value and/or that the BLER is greater than a first set threshold value.

Various modes of adjusting the conditions are described below.

(1) The adjustment condition includes that the current CQI is greater than or equal to a set threshold value.

In this case, the set threshold value may be flexibly set according to the actual application scenario, for example, default set to 4, because when the signal-to-interference-and-noise ratio (Signal to Interference plus Noise Ratio, SINR) is low, simulation finds that adjusting the current CQI control BLER at this time may deteriorate performance, so the current CQI is not adjusted when the current CQI is low, and is adjusted only when the current CQI exceeds the set threshold value.

(2) The adjustment condition includes satisfaction of the first adjustment time interval.

In this case, the first adjustment time interval may be flexibly set according to the actual application scenario, for example, 500s, that is, each 500s may trigger adjustment of the current CQI once, and if the first adjustment time interval is not reached, no adjustment is performed on the CQI.

It can be appreciated that setting the first adjustment time interval to adjust the current CQI at regular time can be understood as long-term adjustment, that is, adjustment can be performed again after adjusting the duration of the first adjustment time interval that needs to be set at intervals once, so that long-term adjustment can be achieved, and the problem that terminal resource consumption is large due to frequent adjustment can be avoided.

(3) The adjustment condition includes that the obtained BLER is larger than a first set threshold.

In this case, in order to enable the reported CQI to quickly reflect the current channel condition, the problem that the CQI is still reported for a long time under the condition that the channel is already bad is avoided, so that the current CQI can be adjusted when the BLER is greater than the first set threshold.

The adjustment mode can be called short-term adjustment, i.e. without limitation of fixed time, and is performed only when the BLER is greater than a first set threshold, where the first set threshold can be flexibly set according to the actual application scenario, for example, the first set threshold is set to 30%, and when the BLER currently obtained is greater than 30%, the current CQI is adjusted.

(4) The adjustment condition includes that the current CQI is greater than or equal to a set threshold value, and that a first adjustment time interval is satisfied.

In this adjustment mode, the current CQI is adjusted only when the current CQI is greater than or equal to the set threshold value and the first adjustment time interval is reached.

(5) The adjustment condition includes that the current CQI is greater than or equal to a set threshold value, and that the current BLER is greater than a first set threshold value.

In this adjustment mode, the current CQI is adjusted only when the current CQI is greater than or equal to the set threshold and the BLER is greater than the first set threshold.

(6) The adjustment condition includes meeting a first adjustment time interval and the current BLER being greater than a first set threshold.

In this adjustment, the current CQI is adjusted only when the adjustment time interval is satisfied and the BLER is greater than the first set threshold.

It should be noted that, in other embodiments, even if the first adjustment time interval has not yet arrived, when the current BLER is greater than the first set threshold, the current CQI is adjusted, so that even if the set adjustment time is not yet arrived, the terminal detects that the current channel condition is bad based on the BLER, and then timely adjusts and reports the current CQI, so that the base station can timely know the current channel condition.

(7) The adjustment condition includes that the current CQI is greater than or equal to a set threshold, the first adjustment time interval is satisfied, and the current BLER is greater than the first set threshold.

In this adjustment mode, the current CQI is adjusted only when three conditions are satisfied.

The adjustment method under the adjustment condition will be described below.

When the current CQI is greater than or equal to a set threshold value and a first adjustment interval is met, judging whether the current BLER is greater than the first set threshold value, if so, adjusting the current CQI down to obtain an adjusted CQI, if not, judging whether the current BLER is less than a second set threshold value, and if the current BLER is less than the second set threshold value, adjusting the current CQI up to obtain an adjusted CQI, wherein the first set threshold value is greater than the second set threshold value.

Here, when the current BLER is greater than the first set threshold, the adjustment amount for reducing the current CQI may be set according to an actual application scenario, for example, the current CQI may be reduced by one, if the current CQI is 6, the current CQI is reduced to 5, so that the CQI reported to the base station by the terminal is 5.

When the current BLER is smaller than or equal to the first set threshold value, whether the current BLER is too small can be judged, so that the CQI can be adjusted.

The first set threshold and the second set threshold may be flexibly set according to practical situations, for example, the first set threshold is 0.1, the second set threshold is 0.05, that is, if the BLER is greater than 0.1, the current CQI may be adjusted down, and if the BLER is less than 0.05, the current CQI may be adjusted up. The specific adjustment amount for lowering or raising can be flexibly set according to practical situations, such as lowering first gear or raising first gear.

Note that, if the BLER is between the first set threshold and the second set threshold, the current CQI may not be adjusted, which is to avoid the situation that the CQI is frequently turned up or down due to too fast a change of the BLER, so in practical application, the first set threshold is generally set to be greater than the second set threshold. Of course, the two set thresholds may be equal, for example, both set thresholds are equal to 0.05, and when the BLER is equal to 0.05, the current CQI may not be adjusted, or the situation may be included in a scenario of adjusting the CQI down or up, for example, when the BLER is greater than or equal to 0.05, the CQI is adjusted down, when the BLER is less than 0.05, the CQI is adjusted up, or when the BLER is greater than 0.05, the CQI is adjusted down, and when the BLER is less than or equal to 0.05.

On the basis of the above embodiment, if the current CQI is greater than or equal to the set threshold and does not satisfy the first adjustment time interval, whether the current BLER is greater than the third set threshold is determined, if so, the first adjustment time interval is shortened to the second adjustment time interval, and then when the second adjustment time interval is satisfied, the current CQI is adjusted, so as to obtain the adjusted CQI.

That is, when the current CQI satisfies the minimum adjustment threshold, even if the first adjustment time interval is not yet reached, the current BLER value may be determined in real time, and if the current CQI is greater than the third set threshold, this indicates that the current channel condition is poor, so that the CQI needs to be adjusted in time, so that the first adjustment time interval may be shortened to the second adjustment time interval, and when the second adjustment time interval is satisfied, the CQI is adjusted.

For example, if the initial first adjustment time interval is 500s, the terminal detects that the BLER is greater than the third set threshold, but the terminal does not reach 100s at this time, that is, the time for adjusting the CQI is not yet reached, but the channel condition is bad at this time, and it is necessary to adjust the CQI as soon as possible, so the adjustment time interval can be shortened at this time. For example, the first adjustment time interval is shortened to 300s, i.e. the second adjustment time interval is 300s.

Thus, the current CQI can be adjusted (e.g. reduced) only after reaching 300s and then reported.

It will be appreciated that the amount of shortening the adjustment time interval here can be flexibly set according to the actual situation, and that the above shortening to 300s is merely illustrative. The third set threshold may be flexibly set according to practical situations, for example, set to 0.3, and the third set threshold may be greater than the first set threshold.

On the basis of the above embodiment, in order to be closer to the actual channel situation, when the second adjustment time interval is satisfied, the BLER may be recalculated in the second adjustment time interval, and if the calculated BLER is greater than the fourth set threshold, the current CQI is adjusted to obtain the adjusted CQI, where the calculated BLER is calculated based on the CRC result in the second adjustment time interval. The fourth set threshold value can be flexibly valued according to practical situations, for example, the fourth set threshold value can be equal to the third set threshold value and is 0.3, and the fourth set threshold value can be unequal.

For example, the adjustment time interval refers to a time period when a CRC result is received, for example, the first adjustment time interval is a time period when 100 CRC results are received, and the shortened second adjustment time interval is a time period when 30 CRC results are received, and the recalculated BLER is calculated based on the 30 CRC results, but before shortening, the BLER is calculated based on the 100 CRC results. That is, regardless of the calculation method, only the window length for calculating the BLER is different, and when the BLER is larger than the fourth set threshold, the calculated window length can be appropriately shortened, and the calculation method based on the CRC result is the same, for example, the calculation method is determined based on the numbers of CRC ok and CRC fail in the CRC result.

Figure 2 shows the effect of counting BLER to adjust CQI for different window lengths, shortening the window length of the counted BLER to support fast CQI adjustment, such as when a large number of CRC fail occur, then the result of CRC fail is stored in the position in front of the CRC statistics window, even though the BLER is reduced in the short period by adjusting the CQI, if it is still counted that the BLER is the whole window length (e.g. still 100 CRC results), the CQI is reduced in the short period. As shown in fig. 2, the BLER is calculated according to a window length of 100, the number of CRCs ok in the second table is 20 (CRC fail10 shown in the figure means the number of CRC fail in 30), then the number of CRC fail in 100 is 80, the bler=80/100, the number of CRC ok in the third table is 20+28=48, the number of CRC fail is 52, and the bler=52/100. If the BLER is calculated using a window length of 30 below, the number of CRCs fail in the second table is 10, the bler=10/30, and the number of CRCs fail in the third table is 2, the bler=2/30.

In addition, as shown in fig. 3, the flowchart of calculating the BLER may be that related parameters are initialized first, and the definitions of these parameters are as follows:

winLen: the window length for counting the BLER storage PDSCH CRC result is given by a unit of tti, and defaults to 100;

pdscntwin: to indicate the number of valid PDSCH received in total;

lastCrcIdx: the position of the CRC result in the window length is used for indicating the latest statistics;

crcWin: PDSCH CRC state stored in the window;

crcCalWinLen: the CRC length within the window used to calculate the BLER;

numcrccokcnt: the number of CRC ok in the CRC length used for calculating BLER in the window;

numemployee tti: the statistical parameters used for counting how long the effective PDSCH is not received and BLER can be reset after a certain time is exceeded;

reCntBlerThd: when the time when PDSCH is not received exceeds the threshold, the BLER calculated parameter is reset, defaulting to 5000tti (granularity of communication system scheduling, transmission Time Interval).

Then judging whether the PDSCH scheduled by the C-RNTI is received in a tti, if yes, judging whether the PDSCH is initially transmitted, if yes, putting the latest CRC result into a corresponding position in a buffer, calculating BLER by utilizing the CRC result in the buffer, and if radio link failure (Radio Link Failure, RLF) or deactivation of a carrier component (carrier component, CC) occurs, ending the flow, otherwise, returning to execute the flow again.

The first adjustment time interval or the second adjustment time interval in the foregoing may refer to a duration of receiving a preset number of CRC results, where the CRC results are CRC results of an initial downlink shared channel (Physical Downlink Shared Channel, PDSCH) scheduled by a downlink control channel (Physical Downlink Control Channel, PDCCH) scrambled by a Cell radio network temporary identifier (Cell-Radio Network Temporary Identifier, C-RNTI).

Wherein, only the result of the initial PDSCH CRC is counted, because: only the BLER based on the initial PDSCH statistics (which is calculated based on the CRC result) truly reflects the demodulation performance of the protocol-defined modulation and coding scheme (Modulation and Coding Scheme, MCS)/CQI. The retransmitted PDSCH has changed code rate and spectral efficiency due to the combining gain, and cannot correspond to the demodulation performance of the CQI reported by the terminal.

Also, only PDSCH CRC results of PDCCH scheduling scrambled by C-RNTI are counted, and since PDSCH scheduled using another RNTI may be used differently and a limited use channel state is not required, demodulation performance of CQI reported by the terminal cannot be reflected. For example, when the network uses a system message radio network temporary identity (System Information-Radio Network Temporary Identifier, SI-RNTI) or a Paging radio network temporary identity (Paging-Radio Network Temporary Identifier, P-RNTI) to scramble the physical downlink control channel (Physical Downlink Control Channel, PDCCH) to schedule PDSCH, the MCS will typically be lower because it is signaling that the PDSCH is transmitted at this time, it should be preferable to ensure that the terminal can resolve as much as possible rather than pay attention to whether or not it can maximize the channel capacity utilized.

In addition, the preset number in the CRC results of the preset number may be flexibly set according to the actual application scenario, for example, the preset number is set to be 100.

Here, a buffer may be used to store the preset number of CRC results, and the adjustment time interval thus set may not be fixed but may be changed according to the length of time the CRC result is received. If the buffer is full of 100 CRC results, when the 101 st CRC result is received, the 101 st CRC result is covered by the 1 st CRC result, which is equivalent to the 2 nd CRC result to the 101 st CRC result stored in the buffer.

In addition, the terminal may calculate the duration by maintaining a counting parameter, for example, 1 is added automatically after each time a CRC result is received, after counting to 100, the terminal is triggered to adjust the CQI, and after counting to 100, the parameter is reset to 0 again.

In this embodiment, the BLER is calculated based on CRC results within an adjustment time interval (e.g., the first adjustment time interval or the second adjustment time interval), e.g., after each new CRC result is received, the BLER is recalculated, and each calculation of the BLER is based on 100 CRC results received within the adjustment time interval.

On the basis of the above embodiment, the time interval of the CRC results received in the adjustment time interval for two adjacent times is within the set time threshold.

That is, feedback control of CQI is performed only when PDSCH is received within a certain time. If the CRC result of the PDSCH of the initial transmission is not received for a long period of time (e.g., within a set time threshold), the relevant parameters are reset (e.g., the duration of the adjustment time interval is reset to 0), and no adjustment is made to the CQI reported by the terminal, because if the CRC result of the PDSCH of the initial transmission is not received for a long time, the statistical BLER is long ago and has become unreliable, so the feedback CQI is no longer adjusted based on the BLER.

In other words, if the time interval of the CRC results of two adjacent times exceeds the set time threshold, the current CQI is not adjusted based on the BLER, and at this time, the current CQI may be reported without adjustment. And, the adjustment time interval may be reset to 0, that is, a parameter for counting the number of CRC results is reset to 0 to recalculate the adjustment time interval.

It can be appreciated that the above set time threshold may be flexibly set according to the actual application scenario, for example, the time threshold is set to 5000tti by default.

On the basis of any embodiment of the present application, in order to avoid a situation that the CQI after adjustment is too large in amplitude and has a large difference from the actual situation, the adjustment amount of the CQI may be limited, that is, the cumulative adjustment amount of the CQI is within a set range, where the cumulative adjustment amount refers to the total adjustment amount on the basis of the CQI initially calculated by the terminal device, and the set range may be set according to the actual situation, for example, on the basis of the originally calculated CQI value, the adjustment cannot be performed beyond ±3 steps, that is, the set range of the adjustment amount is ±3 steps.

In this embodiment of the present application, the CQI is continuously adjusted based on the last adjustment, for example, the CQI calculated by the initial terminal is 5, when the BLER is checked to find that the BLER is too low during the first adjustment, the CQI should be increased by 2 steps, the CQI is adjusted to 7, the cumulative adjustment amount is 2, when the BLER is found to be very low during the latest check, the reported CQI also needs to be increased, for example, by 1 step, the CQI is adjusted to 8, the cumulative adjustment amount is 3, when the CQI needs to be adjusted by 2 steps for the next discovery, the CQI is adjusted to 6 again, and the cumulative adjustment amount is 6-5=1.

In addition, when the sub-bands report, each sub-band adjusts the CQI that is fed back, and the adjustment manners are the same as those described in the embodiments of the present application, and will not be described in detail here.

The above-described adjustment procedure for CQI is described below with a specific embodiment, as shown in fig. 4.

The parameters are initialized first, and the parameters are defined as follows:

(1) cqiAdjInterval: the accumulated interval after CQI adjustment avoids excessive speed of CQI adjustment;

setting the parameter to 0 after the initial state and once CQI adjustment;

the parameter is accumulated by 1 each time a valid PDSCH is received, i.e., the primary PDSCH scheduled by the C-RNTI;

when the parameter is greater than a certain threshold (e.g., 100), the reported CQI is adjusted.

(2) numemployee tti: and counting how long the effective PDSCH is not received, and resetting all parameters used for CQI feedback adjustment after a certain time is exceeded.

(3) adjCqiGear: the CQI gear which is adjusted on the basis of the reported CQI cannot exceed +/-3 at maximum. A value greater than 0 indicates a decrease in reported CQI and a value less than 0 indicates a lift in reported CQI.

(4) shorttermBler: when the long-term statistical BLER is found to be relatively high, the interval for CQI adjustment is shortened, and accordingly the window length for calculating the BLER is shortened.

The implementation process is approximately as follows:

initializing parameters, judging whether a PDSCH scheduled by a C-RNTI is received, judging whether the PDSCH is initially transmitted or not if yes, judging whether software SW in a terminal receives an updating result of CQI calculated by terminal hardware HW or not if yes, shortening the adjusting time interval to be a second adjusting time interval (such as a time length shortened to 30 CRC results), if yes, continuing judging whether the CQI is larger than or equal to a set threshold value (judging whether the wbRptCqi is set to 4 in the example, if the if wbRptCqi is set to 4 > = 4), if yes, judging whether the first adjusting time interval (namely if cqiAdjinterval > = winn) is met, if not, judging whether the BLER is larger than a third set threshold value (namely, the third set threshold value is 0.3 in the example), if yes, shortening the adjusting time interval to be a second adjusting time interval (such as a time length shortened to 30 CRC results are received), and then calculating a fourth adjusting time interval (namely, if cqiAdjInterval = 0.3 winn) after the second adjusting time interval is met, and calculating based on the fourth adjusting time interval is calculated, if the BLER is still larger than the fourth adjusting time interval is calculated; if the first adjustment time interval is satisfied, the left branch in the flowchart branches to determine whether the BLER is greater than a first set threshold (in the example, the first set threshold is 0.1), if so, adjust the CQI, and if so, determine whether the BLER is less than a second set threshold (in the example, the second set threshold is 0.05), and if so, adjust the CQI; after the CQI is adjusted, judging whether the accumulated adjustment amount of the CQI is within a set range (such as within-3 to 3 or not), and reporting the CQI when the adjusted CQI value is within a range specified by a communication protocol.

In the embodiment of the application, the CQI is dynamically adjusted based on the BLER, so that the CQI is as close to the BLER required by the protocol as possible under any complex scene, and the throughput of the whole communication system is further improved.

Fig. 5 is a simulation result of an NR 101 test case, where the left graph is an effect diagram without using the adjustment method of the present application, and the right graph is an effect diagram with using the adjustment method of the present application, and it can be seen that after CQI is adjusted by using the adjustment method of the present application, the BLER can be controlled to be around 10%, and the throughput is increased by one time and more in this scenario, from 69Mbps to 150Mbps.

Referring to fig. 6, fig. 6 is a block diagram illustrating a structure of an information adjustment apparatus 200 according to an embodiment of the present application, where the apparatus 200 may be a module, a program segment, or a code on an electronic device. It should be understood that the apparatus 200 corresponds to the above embodiment of the method of fig. 1, and is capable of performing the steps involved in the embodiment of the method of fig. 1, and specific functions of the apparatus 200 may be referred to in the above description, and detailed descriptions thereof are omitted herein as appropriate to avoid redundancy.

Optionally, the apparatus 200 includes:

an information acquisition module 210, configured to acquire a current channel quality indicator CQI;

The information adjustment module 220 is configured to adjust the current CQI according to the current CQI, the current block error rate BLER, and the first adjustment time interval, and obtain an adjusted CQI.

Optionally, the information adjustment module 220 is configured to determine whether the current BLER is greater than a first set threshold if the current CQI is greater than or equal to the set threshold and the first adjustment time interval is satisfied; if yes, the current CQI is regulated down, and the regulated CQI is obtained; if not, judging whether the current BLER is smaller than a second set threshold value; and if the current BLER is smaller than the second set threshold, the current CQI is regulated to obtain regulated CQI, wherein the first set threshold is larger than the second set threshold.

Optionally, the information adjustment module 220 is configured to determine whether the current BLER is greater than a third set threshold if the current CQI is greater than or equal to the set threshold and the first adjustment time interval is not satisfied; if yes, shortening the first adjustment time interval to a second adjustment time interval; and when the second adjustment time interval is met, adjusting the current CQI to obtain an adjusted CQI.

Optionally, the information adjustment module 220 is configured to recalculate the BLER during the second adjustment time interval when the second adjustment time interval is satisfied; and if the recalculated BLER is larger than a fourth set threshold, the current CQI is regulated down, and the regulated CQI is obtained, wherein the recalculated BLER is obtained based on the CRC result in the second regulation time interval.

Optionally, the time interval of the CRC results received in two adjacent times is within a set time threshold.

and/or the number of the groups of groups,

the information adjustment module 220 is further configured to determine whether the adjusted CQI is within a range defined by the communication protocol, and if not, adjust the adjusted CQI greater than the upper limit of the range to the upper limit of the range again, and adjust the adjusted CQI less than the lower limit of the range to the lower limit of the range again.

It should be noted that, for convenience and brevity, a person skilled in the art will clearly understand that, for the specific working procedure of the apparatus described above, reference may be made to the corresponding procedure in the foregoing method embodiment, and the description will not be repeated here.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an electronic device for executing an information adjustment method according to an embodiment of the present application, where the electronic device may include: at least one processor 310, such as a CPU, at least one communication interface 320, at least one memory 330, and at least one communication bus 340. Wherein the communication bus 340 is used to enable direct connection communication of these components. The communication interface 320 of the device in the embodiment of the present application is used for performing signaling or data communication with other node devices. The memory 330 may be a high-speed RAM memory or a nonvolatile memory (non-volatile memory), such as at least one disk memory. Memory 330 may also optionally be at least one storage device located remotely from the aforementioned processor. The memory 330 has stored therein computer readable instructions which, when executed by the processor 310, perform the method process described above in fig. 1.

It will be appreciated that the configuration shown in fig. 7 is merely illustrative, and that the electronic device may also include more or fewer components than those shown in fig. 7, or have a different configuration than that shown in fig. 7. The components shown in fig. 7 may be implemented in hardware, software, or a combination thereof.

Embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs a method process performed by an electronic device in the method embodiment shown in fig. 1.

The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, are capable of performing the methods provided by the above-described method embodiments, for example, comprising:

acquiring a current Channel Quality Indicator (CQI);

In summary, the embodiment of the application provides an information adjustment method, an apparatus, an electronic device, and a storage medium, where the method adjusts the obtained current CQI with the current CQI, the BLER, and an adjustment time interval, and since the BLER can better reflect a real channel condition, the CQI obtained after the CQI is adjusted by combining with the BLER can better reflect a real channel quality, so that accuracy of the obtained CQI is higher, a problem that the CQI accuracy measured by a terminal using a self-defined algorithm is not high is improved, and further performance of a communication system is reduced.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

Further, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Furthermore, functional modules in various embodiments of the present application may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An information adjustment method, the method comprising:

acquiring a current Channel Quality Indicator (CQI);

2. The method of claim 1, wherein the adjusting the current CQI according to the current CQI, the current block error rate BLER, and the first adjustment time interval to obtain the adjusted CQI comprises:

If yes, the current CQI is regulated down, and the regulated CQI is obtained;

3. The method according to claim 1, wherein said adjusting the current CQI according to the current CQI, the obtained block error rate BLER, and the first adjustment time interval, obtaining an adjusted CQI, comprises:

4. The method of claim 3, wherein adjusting the current CQI to obtain an adjusted CQI when the second adjustment interval is satisfied comprises:

5. The method of claim 1 wherein the first adjustment time interval is a duration of receiving a predetermined number of cyclic redundancy check, CRC, results, the CRC results being CRC results of a primary downlink shared channel, PDSCH, scheduled by a downlink control channel, PDCCH, scrambled by a cell radio network temporary identity, C-RNTI.

6. The method of claim 5, wherein the time interval between two adjacent CRC results received is within a set time threshold.

7. The method according to any one of claims 1-6, wherein the cumulative adjustment amount of CQI is within a set range, the cumulative adjustment amount being a total adjustment amount based on CQI initially calculated by the terminal device;

and/or the number of the groups of groups,

after obtaining the adjusted CQI, the method further includes:

whether the adjusted CQI is within a range defined by a communication protocol or not is judged, if not, the adjusted CQI which is larger than the upper limit of the range is adjusted to the upper limit of the range again, and the adjusted CQI which is smaller than the lower limit of the range is adjusted to the lower limit of the range again.

8. An information adjustment device, the device comprising:

9. An electronic device comprising a processor and a memory storing computer readable instructions that, when executed by the processor, perform the method of any of claims 1-7.

10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, performs the method according to any of claims 1-7.