CN113852986A

CN113852986A - Information reporting method and device, electronic equipment and readable storage medium

Info

Publication number: CN113852986A
Application number: CN202111139720.2A
Authority: CN
Inventors: 司江南
Original assignee: Xingsi Connection Shanghai Semiconductor Co ltd
Current assignee: Xingsi Connection Shanghai Semiconductor Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2021-12-28
Anticipated expiration: 2041-09-28
Also published as: CN113852986B

Abstract

The application provides an information reporting method, an information reporting device, electronic equipment and a readable storage medium, and relates to the technical field of communication. The method comprises the steps of acquiring current downlink channel state information and N +1 combined information consisting of RI and SINR in historical downlink channel state information, calculating the size of a corresponding transmission block of each combined information under the set bandwidth of network equipment, selecting a target SINR in the combined information with the largest transmission block size, and acquiring CQI corresponding to the target SINR to report, so that a base station can schedule a terminal based on the principle of maximum flow, the base station can utilize the transmission capacity of a wireless channel to the maximum extent, and the system throughput is improved.

Description

Information reporting method and device, electronic equipment and readable storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information reporting method and apparatus, an electronic device, and a readable storage medium.

Background

LTE (Long Term Evolution) is a Long Term Evolution of 3GPP (3rd generation partnership Project) dominated universal mobile telecommunications system technology, and is a wireless communication technology that is widely recognized at present.

Since a transmission channel of wireless communication is a multipath fading and time-varying channel, CSI (channel state Information) is constantly changing. In order to obtain the maximum system capacity in the wireless channel environment of the LTE system, the base station needs to select a suitable modulation and coding scheme and subband resources according to the wireless channel environment of each terminal. The terminal needs to detect the CSI of the wireless channel in real time and feed back the CSI to the base station. And the base station dynamically adjusts the optimal time-frequency resource allocated to the user according to the feedback CSI.

In the LTE system, CSI includes: CQI (Channel Quality Indicator), RI (Rank Indication), PMI (Precoding Matrix index), and the like. The CQI is a group of indexes, each index corresponds to a modulation mode and a code rate, the PMI is a precoding matrix index, and the RI is the rank of the current channel transmission matrix.

The CQI is obtained by mapping a mapping table according to SINR (Signal to interference plus Noise Ratio) measured by a terminal, however, in a fading channel, due to complexity of a wireless channel, generally, the obtained SINR has a large error, so that a base station cannot utilize transmission capability of the wireless channel to the maximum extent, and thus, a loss of system throughput may be caused.

Disclosure of Invention

An object of the embodiments of the present application is to provide an information reporting method, an information reporting apparatus, an electronic device, and a readable storage medium, so as to solve the problem that a base station in the prior art cannot utilize the transmission capability of a wireless channel to the maximum extent, thereby causing a loss of system throughput.

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

acquiring currently measured current downlink channel state information, wherein the current downlink channel state information comprises combined information consisting of a current Rank Indication (RI) and a current signal to interference plus noise ratio (SINR), and the current SINR is determined according to a first SINR obtained by measuring a reference signal sent by network equipment and a second SINR obtained by measuring a Physical Downlink Shared Channel (PDSCH);

acquiring historical downlink channel state information, wherein the historical downlink channel state information comprises N pieces of combined information consisting of historical RI and historical SINR, and N is an integer greater than or equal to 1;

calculating the size of a transmission block corresponding to each piece of combined information according to the current downlink channel state information, the N +1 combined information in the historical downlink channel state information and the set bandwidth of the network equipment during scheduling;

and determining a target SINR in the combined information with the largest transmission block size, and acquiring channel quality information CQI corresponding to the target SINR for reporting.

In the implementation process, the current downlink channel state information and N +1 pieces of combined information consisting of RI and SINR in the historical downlink channel state information are obtained, then the size of a corresponding transmission block of each combined information in the set bandwidth of the network device is calculated, then a target SINR in the combined information with the largest transmission block size is selected, and a CQI corresponding to the target SINR is obtained and reported, so that when the base station schedules the terminal, the base station can schedule the maximum traffic with the largest transmission block, thereby enabling the base station to utilize the transmission capability of the wireless channel to the maximum extent and improving the system throughput.

Optionally, the calculating, according to the current downlink channel state information, the N +1 combination information in the historical downlink channel state information, and the set bandwidth of the network device during scheduling, a size of a transmission block corresponding to each combination information includes:

acquiring a corresponding modulation order and a target code rate according to the SINR in each combined message;

and calculating the size of the transmission block corresponding to each combined information according to the modulation order and the target code rate corresponding to each combined information, the RI, the set bandwidth of the network equipment during scheduling and the number of the RE subcarriers.

In the implementation process, by calculating the size of the transport block corresponding to each combination information, it can be known how large the base station can perform data transmission at the flow rate of each combination information, and then CQI that can be scheduled at the maximum flow rate can be selected for reporting, so that the base station can utilize the transmission capability of the wireless limit to the maximum extent.

Optionally, the obtaining of the historical downlink channel state information includes:

acquiring initial historical downlink channel state information, wherein the initial historical downlink channel state information comprises M pieces of combined information consisting of historical RI and historical SINR, M is greater than or equal to N, and each piece of combined information is configured with a timer;

and screening to obtain N pieces of combined information in which a timer does not time out, wherein the historical downlink channel state information comprises the N pieces of combined information.

In the implementation process, the N pieces of combined information which are not overtime are screened out, so that the obtained N pieces of combined information are ensured to be effective so as to adapt to the characteristic that the wireless environment slowly changes in a short time.

Optionally, the first SINR is obtained by:

receiving a reference signal sent by network equipment;

performing channel measurement according to the reference signal to obtain the current RI and the initial SINR;

judging whether the timer corresponding to the current RI is overtime or not;

if not, filtering the initial SINR and the SINR obtained by measuring the reference signal last time to obtain the first SINR after filtering;

and if so, taking the initial SINR as the first SINR.

In the implementation process, whether the historical SINR is used for filtering is determined by judging whether the timer maintained by the RI is overtime, so that the transient error of single measurement can be eliminated, the obtained SINR is more accurate, and the SINR is more in line with the actual situation.

Optionally, after acquiring the initial SINR, the method further includes:

judging whether the initial SINR exceeds a first preset threshold value or not;

if yes, executing the following steps: and judging whether the timer corresponding to the current RI is overtime. Therefore, the received reference signal can be judged to judge whether the reference signal is a signal needing to be detected or not, and the subsequently obtained SINR can be ensured to be a real and effective SINR.

Optionally, the second SINR is obtained by:

receiving data transmitted by the network equipment through the PDSCH;

verifying the data to obtain a verification result;

and adjusting the preset SINR according to the checking result to obtain an adjusted second SINR.

In the implementation process, the preset SINR is adjusted according to the verification result, so that the obtained second SINR is more accurate.

Optionally, the adjusting the preset SINR according to the check result to obtain an adjusted second SINR includes:

if the check result is that the preset SINR passes, adding a first numerical value to the preset SINR, and obtaining a sum value which is the second SINR;

and if the verification result is that the preset SINR does not pass, subtracting a second numerical value from the preset SINR, and obtaining a difference value as the second SINR.

Optionally, after receiving the data transmitted by the PDSCH by the network device, the method further includes:

measuring a demodulation reference signal of the PDSCH to obtain a reference SINR;

judging whether the reference SINR exceeds a second preset threshold value or not;

if yes, executing the following steps: and verifying the data to obtain a verification result.

In the implementation process, whether the demodulation reference information meets the requirement is judged by judging the reference SINR, so that the subsequently obtained SINR is real and effective.

Optionally, the current SINR is a weighted sum of the first SINR and the second SINR. By using the second SINR to compensate the first SINR, the difference between the real environment and the simulated channel can be compensated, so that the obtained SINR is more accurate.

In a second aspect, an embodiment of the present application provides an information reporting apparatus, where the apparatus includes:

a current information obtaining module, configured to obtain current measured current downlink channel state information, where the current downlink channel state information includes combination information formed by a current rank indication RI and a current signal-to-interference-and-noise ratio SINR, and the current SINR is determined according to a first SINR obtained by measuring a reference signal sent by a network device and a second SINR obtained by measuring a physical downlink shared channel PDSCH;

a historical information obtaining module, configured to obtain historical downlink channel state information, where the historical downlink channel state information includes N pieces of combined information including historical RI and historical SINR, and N is an integer greater than or equal to 1;

a transmission block calculation module, configured to calculate, according to the current downlink channel state information, N +1 combination information in the historical downlink channel state information, and a set bandwidth of the network device during scheduling, a size of a transmission block corresponding to each combination information;

and the information reporting module is used for determining a target SINR in the combined information with the largest transmission block size and acquiring channel quality information CQI corresponding to the target SINR for reporting.

Optionally, the transmission block calculation module is configured to obtain a corresponding modulation order and a corresponding target code rate according to the SINR in each piece of combined information; and calculating the size of the transmission block corresponding to each combined information according to the modulation order and the target code rate corresponding to each combined information, the RI, the set bandwidth of the network equipment during scheduling and the number of the RE subcarriers.

Optionally, the history information obtaining module is configured to obtain initial historical downlink channel state information, where the initial historical downlink channel state information includes M pieces of combined information formed by historical RI and historical SINR, M is greater than or equal to N, and each piece of combined information is configured with a timer; and screening to obtain N pieces of combined information in which a timer does not time out, wherein the historical downlink channel state information comprises the N pieces of combined information.

Optionally, the current information obtaining module is configured to:

receiving a reference signal sent by network equipment;

judging whether the timer corresponding to the current RI is overtime or not;

and if so, taking the initial SINR as the first SINR.

Optionally, the current information obtaining module is further configured to determine whether the initial SINR exceeds a first preset threshold; if yes, executing the following steps: and judging whether the timer corresponding to the current RI is overtime.

Optionally, the current information obtaining module is further configured to receive data transmitted by the network device through the PDSCH; verifying the data to obtain a verification result; and adjusting the preset SINR according to the checking result to obtain an adjusted second SINR.

Optionally, the current information obtaining module is further configured to add the preset SINR to a first numerical value if the check result is that the preset SINR passes, and obtain a sum of the second SINR; and if the verification result is that the preset SINR does not pass, subtracting a second numerical value from the preset SINR, and obtaining a difference value as the second SINR.

Optionally, the current information obtaining module is further configured to measure a demodulation reference signal of the PDSCH to obtain a reference SINR; judging whether the reference SINR exceeds a second preset threshold value or not; if yes, executing the following steps: and verifying the data to obtain a verification result.

Optionally, the current SINR is a weighted sum of the first SINR and the second SINR.

In a third aspect, an embodiment of the present application provides an electronic device, including a processor and a memory, where the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the steps in the method as provided in the first aspect are executed.

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

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof 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 required to be used 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 therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a flowchart of an information reporting method according to an embodiment of the present application;

fig. 2 is a flowchart for acquiring a first SINR according to an embodiment of the present application;

fig. 3 is a flowchart for acquiring a second SINR according to an embodiment of the present application;

fig. 4 is a schematic diagram of obtaining a total SINR according to an embodiment of the present application;

fig. 5 is a block diagram of an information reporting apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an electronic device for executing an information reporting 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 the embodiments of the present invention may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present invention. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

The embodiment of the application provides an information reporting method, which includes the steps of obtaining N +1 pieces of combined information consisting of RI and SINR in current downlink channel state information and historical downlink channel state information, then calculating the size of a corresponding transmission block of each piece of combined information under a set bandwidth of network equipment, then selecting a target SINR in the combined information with the largest transmission block size, and obtaining a CQI corresponding to the target SINR to report, so that a base station can schedule a terminal with the largest transmission block to schedule the largest flow, the base station can utilize the transmission capacity of a wireless channel to the maximum, and the system throughput is improved.

In order to facilitate understanding of the information reporting method provided in the present application, some terms referred to in the embodiments of the present application are briefly explained below.

CQI: channel quality information indicating a highest modulation order and a coding rate when a certain specific block error rate is satisfied;

SINR: the signal-to-interference-and-noise ratio, i.e. the signal-to-interference-plus-noise ratio, is the ratio of the received strength of the useful signal to the received strength of the interference signal;

RI: in a MIMO (Multiple-Input Multiple-Output) system using Nt transmit antennas and Nr receive antennas, a transmission channel may be represented by a matrix, and RI represents a rank of the transmission channel in the MIMO system, which may be regarded as the number of independent parallel channels on a transmission path between the transceiver devices. The RI information may also indicate correlation between multiple transmission channels between the transmitting end and the receiving end, if RI is 1, it indicates that the multiple transmission channels are completely correlated, and the transmitted signals may possibly interfere with each other, so that the receiving end is difficult to accurately receive, and if RI is greater than 1, it indicates that there are multiple independent uncorrelated channels, and the UE may receive signals on different channels.

PDSCH: physical Downlink Shared Channel, which is used for carrying data sent by the base station to the terminal.

RB: resource Block, 12 subcarriers in frequency, one slot in time domain, called 1 RB.

RE: resource Element, one subcarrier in frequency and one symbol in time domain, is called an RE. symbol is the minimum range in the time domain, one symbol is 0.5/0.7 ms.

MCS: modulation and Coding Scheme, and the base station can perform MCS scheduling according to the CSI information reported by the terminal.

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

step S110: and acquiring the current measured current downlink channel state information.

The current downlink channel state information includes a combination information composed of a current RI and a current SINR, and the current SINR is determined according to a first SINR obtained by measuring a reference signal sent by the network device and a second SINR obtained by measuring the PDSCH.

The network device in this application may refer to a device capable of communicating with a terminal, and has a wireless transceiving function, including but not limited to: for convenience of description, the following embodiments take the base station as an example for the sake of convenience. The terminal in the application also has a wireless transceiving function, and can be a mobile phone, a tablet, a computer with a wireless function, and the like.

In order to facilitate the base station to implement better MCS scheduling for the terminal, the base station needs to acquire channel state information, and the base station may configure a channel measurement resource, such as CSI, for the terminal in advance. In order to better adapt to the change of a wireless channel, a terminal can report downlink channel quality information to a base station through CSI, wherein the downlink channel quality information is downlink channel state information comprising CQI, PMI and RI, so that the base station can select more reliable MCS and better time-frequency resources for the terminal.

In order to facilitate the terminal to measure, the terminal may obtain CSI Information by measuring a received downlink Reference Signal, such as a CRS (Cell Reference Signal) or a CSI-RS (Channel State Information-Reference Signal), and report the CSI Information to the base station. After the base station configures the terminal, the terminal receives the configuration information, calculates the time-frequency resource where the reference signal is located and the related configuration, and after the configurations are determined, the terminal can correctly receive the reference signal and perform subsequent measurement.

The CQI information obtained by the terminal is obtained through a mapping table of SINR and CQI obtained through pre-simulation, but since a real environment is variable and often cannot be matched with a simulated channel, the CQI obtained by using the mapping table of SINR and CQI obtained through simulation in an actual environment cannot completely reflect the real situation of the channel, which may cause the BLER (Block Error Rate) to deviate from an ideal BLER when the base station performs scheduling. Therefore, in order to compensate for the CQI information, in the embodiment of the present application, the PDSCH needs to be measured to obtain a second SINR, and then the current SINR is jointly determined according to the first SINR and the second SINR.

In some embodiments, the current SINR may be a sum of the first SINR and the second SINR, or may be a weighted sum of the first SINR and the second SINR, for example, where the current SINR is a × first SINR + b × second SINR, where values of a and b may be flexibly set according to actual requirements, and a + b may be equal to 1, so that the first SINR is compensated by using the second SINR, the obtained current SINR is a final SINR, and a difference between the simulated channel and the real channel may be compensated, so that the finally output CQI is more accurate.

In addition, when the terminal performs the RI measurement, the terminal may perform the measurement by using a relevant measurement method, such as an SVD decomposition method, a maximum channel capacity method Max-CP, a maximum post-processing channel capacity method Max-MMSE-PostCP, a maximum mutual information method Max-MI, and the like. If RI measurement is carried out by using the SVD decomposition method, the following processes are carried out: the terminal carries out singular value decomposition on the autocorrelation matrix of each subcarrier channel matrix, arranges the obtained singular values from large to small, compares the singular values with the signal-to-noise ratio according to a convention method to obtain the optimal RI value of each subcarrier, and finally selects the optimal RI value suitable for the whole bandwidth according to most principles for the RI values corresponding to L subcarriers, and the current RI value can be measured and obtained according to the method.

Step S120: and acquiring historical downlink channel state information.

The historical downlink channel state information comprises N pieces of combined information consisting of historical RI and historical SINR, wherein N is an integer greater than or equal to 1.

It can be understood that each combination information in the historical downlink channel state information is obtained by the terminal every time of measurement in the historical period, where the manner of obtaining the historical RI and the historical SINR is the same as the manner of obtaining the current RI and the current SINR, and is not described herein too much. The terminal may store the RI and SINR measured at each time in the form of combined information in a storage medium. Therefore, when the historical downlink channel state information is acquired, the corresponding information can be directly read from the storage medium.

Step S130: and calculating the size of a transmission block corresponding to each piece of combined information according to the current downlink channel state information, the N +1 combined information in the historical downlink channel state information and the set bandwidth of the network equipment during scheduling.

The transport Block is TBsize, and indicates a Physical Resource Block (PRB) Resource required for transmission, that is, a data Block size on one subframe or one code stream. In order to implement the scheduling of the maximum traffic to the terminal by the base station under the set bandwidth, so as to improve the system throughput, the size of the transport block corresponding to each piece of combined information needs to be calculated.

In some embodiments, when calculating the size of the transport block, the corresponding modulation order and the target code rate may be obtained according to the SINR in each combination information, and then the size of the transport block corresponding to each combination information may be calculated according to the modulation order and the target code rate corresponding to each combination information, the RI, the set bandwidth of the network device during scheduling, and the number of the subcarriers RE.

The specific calculation formula can be as follows:

TBsize＝RI*RBNum*Q*TC*12*symbol；

wherein, RI is RI in each combined information, RBNum is set bandwidth of the network device, i.e. BWP, 12 is the number of REs, Q is modulation order corresponding to MCS scheduling, TC is target code rate corresponding to MCS scheduling, Q and TC can be obtained through a mapping table (i.e. mapping table of SINR to Q and TC of MCS) according to SINR in each combined information, and the mapping table can be obtained through simulation.

Therefore, the transport block size corresponding to each combination information, i.e. N +1 transport block sizes, can be obtained according to the above calculation formula.

Step S140: and determining a target SINR in the combined information with the largest transmission block size, and acquiring a CQI corresponding to the target SINR for reporting.

In order to enable the base station to schedule the terminal with the maximum traffic under the set bandwidth, the combination information with the largest transport block size may be selected from the combination information, for example, the combination information corresponding to the largest transport block size is determined from the N +1 transport block sizes, and the combination information may be referred to as target combination information, and RI and SINR in the target combination information may be referred to as target RI and target SINR, so that the target SINR may be obtained. Then, when the CQI is acquired, the CQI corresponding to the acquired target SINR can be searched for according to a mapping table of SINR and CQI obtained in advance through simulation, and then the CQI can be reported to the base station. Of course, when the base station performs MCS scheduling, the base station may also perform scheduling based on RI and/or PMI, so the terminal may also report the target RI, CQI, and PMI to the base station, so that the subsequent base station may schedule the terminal according to the information reported by the terminal, for example, the base station performs channel mapping according to the number of transmission channels indicated by the RI, selects a precoding matrix from a fixed codebook according to PMI indication to perform precoding, and determines the modulation and coding scheme and transmission efficiency adopted by each codeword according to the CQI index.

It should be noted that, after reporting the information, the terminal may store the current RI and the current SINR, which are currently measured, as combination information in the historical downlink channel state information, that is, the current RI and the current SINR become historical information, so that when reporting the information next time, the terminal continues to obtain the corresponding CQI for reporting according to the above manner.

On the basis of the above embodiment, since the historical downlink channel state information includes all downlink channel state information before the current time, the information included in the historical downlink channel state information may be more and longer, and if the finally obtained target SINR is the SINR in the combination information with longer time, the CQI obtained based on this SINR may lose timeliness and be inaccurate. In order to avoid this problem, the acquired historical downlink channel state information may be historical downlink channel state information in a set period of time before the current time (since the wireless environment is slowly changing in a short time, historical downlink channel state information in a short time may be acquired). For example, a corresponding timestamp is set for each piece of combined information in all pieces of historical downlink channel state information, where the timestamp is a time at which the combined information is obtained by measurement, so that the combined information may be filtered according to the timestamp to filter out combined information within a set time period before the current time, and the combined information may be used as the obtained historical downlink channel state information. For example, all historical downlink channel state information includes M pieces of combination information, M is greater than or equal to N, then screening is performed according to the timestamp, N pieces of combination information satisfying the condition after screening are obtained, and then the size of the transmission block is calculated by using the N pieces of combination information and the currently obtained combination information.

In other embodiments, in order to avoid that the obtained CQI loses timeliness, a timer may be maintained for each combination information obtained in history, that is, a timer may be started each time the combination information is obtained by measurement, and then when the history downlink channel state information is obtained, the combination information whose timer has not timed out may be screened out as the history downlink channel state information. The realization process is as follows: acquiring initial historical downlink channel state information, wherein the initial historical downlink channel state information may refer to all historical downlink channel state information, or may refer to historical downlink channel state information in a recent period of time, and includes M pieces of combination information composed of historical RI and historical SINR, M is greater than or equal to N, wherein each piece of combination information is configured with a timer, then N pieces of combination information in which the timer is not overtime can be acquired through screening, and the N pieces of combination information can be used as historical downlink channel state information, and the N pieces of combination information acquired in this way are all effective combination information.

For example, after one piece of combined information is acquired each time, a timer is configured for the combined information, and timing is started, timing time corresponding to each piece of combined information may be the same or different, and may be flexibly set according to actual requirements, so that when the N pieces of combined information are acquired, whether the timer is overtime can be checked, and if the timer is not overtime, the combined information that is not overtime is used as one of the N pieces of combined information.

In the implementation process, the N pieces of combination information obtained in the above manner are combination information in a short time, and the change of the combination information is not very different from the currently obtained combination information, so the CQI and the RI obtained in the above manner are combination information that enables the base station to schedule at the maximum traffic, so that the terminal reports the information, and the change of the maximum traffic can be made more gradual.

The following describes the process of acquiring the first SINR and the second SINR in detail.

On the basis of the foregoing embodiment, the first SINR may be obtained in the following manner, as shown in fig. 2, including the following steps:

step S210: and receiving a reference signal sent by the network equipment.

The reference signal is, for example, the CRS or CSI-RS mentioned above, which is generated by the base station to the terminal, for example, the base station transmits to the terminal on a specific time-frequency resource at a specified period.

Step S220: and performing channel measurement according to the reference signal to acquire the current RI and the initial SINR.

The current RI and the initial SINR are obtained by measuring the reference signal, and the RI is measured as described in the above embodiments, and will not be described repeatedly here. The SINR measurement may be that the terminal measures the power of the reference signal and measures the power of the interference signal, and then the ratio of the two powers is the SINR.

Step S230: and judging whether the timer corresponding to the current RI is overtime, if not, executing the step S240, and if so, executing the step S250.

Due to the instantaneity of channel measurement, a situation that the deviation of the CQI obtained by a certain measurement is large may occur, and according to the specific situation of the terminal, it may be assumed that the channel does not change drastically in a short time, and in an actual situation, the error ratio of a measurement may be large due to the instantaneous interference of the channel, and at this time, a situation that the error of the obtained CQI is large may occur. Therefore, in order to eliminate the transient error of a single measurement, the output curve of the SINR is made smooth to better meet the actual situation. In this embodiment of the present application, a timer is maintained for each RI (after a new RI is measured each time, a timer is started for the new RI), that is, after a terminal obtains an RI and an SINR (which may be referred to as an initial SINR) each time, it is then determined whether the timer maintained by the RI is overtime, if so, it indicates that a history value has failed, the initial SINR is directly used as a first SINR under the RI, and if not, filtering processing is performed in combination with the history value.

For example, if the current RI measured by the terminal currently is 2, the RI measured by the terminal in the history is also 2, and the RI measured in the history is 2, the timer is started, and after the terminal measures the current RI, whether the timer corresponding to the RI 2 in the history is overtime is determined. If the RI measured by the terminal currently does not have a corresponding timer, which indicates that the current RI is reported for the first time, a timer of the RI is newly started at this time, and then the initial SINR measured currently is directly used as the first SINR.

Step S240: and filtering the initial SINR and the SINR obtained by measuring the reference signal last time to obtain a processed first SINR.

If the timer corresponding to the current RI does not time out, the historical SINR corresponding to the historical RI is obtained, that is, the historical SINR corresponding to the RI obtained by the last measurement is, for example, SINR1, and then SINR1 and the initial SINR may be subjected to smoothing filtering, or of course, other filtering methods may be used to perform the processing, and finally, the SINR after the filtering processing is obtained as the first SINR.

Step S250: the initial SINR is taken as the first SINR.

If the timer is overtime, the historical value is invalid, and the currently measured initial SINR is directly used as the first SINR.

After the first SINR is obtained, the timer corresponding to the RI is restarted, and then the historical SINR corresponding to the historical RI is replaced by the first SINR, for example, the SINR1 is replaced by the first SINR, and at this time, the SINR corresponding to RI — 2 is the first SINR, so that when the measurement is performed next time, the processing is continued according to the above steps.

On the basis of the above embodiment, in order to ensure the accuracy of the measurement, after the initial SINR is obtained, it may be further determined whether the initial SINR exceeds a first preset threshold, and if so, it may be further determined whether the timer corresponding to the current RI is overtime.

That is to say, whether the initial SINR exceeds the first preset threshold value may be determined to determine whether the received reference signal is a current reference signal to be measured, if not, the received reference signal may not meet the requirement, and may be discarded directly, and if the received SINR exceeds the first preset threshold value, the received reference signal may meet the requirement, and subsequent processing may be continued, so that it may be ensured that the subsequently measured SINR is more accurate.

On the basis of the above embodiment, the second SINR may be obtained by: and receiving data transmitted by the network equipment through the PDSCH, verifying the data to obtain a verification result, and adjusting the preset SINR according to the verification result to obtain an adjusted second SINR.

The data may be checked by calculating a block error rate of the data and then checking a calculation result. The block error rate is a way to represent the correct rate of data transmission, in practical application, the block error rate can be obtained by periodically counting the CRC check code of the received data, and the ratio of the number of CRC check errors to the total number of statistical frames is the block error rate in the statistical period. If the block error rate is less than the preset block error rate, the verification result is that verification is passed, at this time, a first numerical value can be added on the basis of the preset SINR, the obtained sum value is a second SINR, if the block error rate is greater than or equal to the preset block error rate, the verification result is that verification is not passed, at this time, a second numerical value can be subtracted on the basis of the preset SINR, and the obtained difference value is a second SINR.

In order to adapt to rapid change of a wireless channel, the LTE adopts different link adaptation calculations including a method of combining inner loop link adaptation and outer loop link adaptation. The inner loop link adaptation is to select a proper MCS for the terminal based on the obtained SINR, and the outer loop link adaptation is to adjust the MCS to achieve a target BLER, for example, the target BLER in LTE is 0.1, and the base station may determine the current BLER by counting HARQ-ACK (Hybrid Automatic Repeat Request) fed back by the terminal, which is based on HARQ-ACK feedback information of the first transmission of the Hybrid Automatic Repeat HARQ.

In the HARQ technology, the base station needs to retransmit the erroneous data packet, so that the effect of the time variation of the wireless mobile channel and the multipath fading on the signal transmission can be well compensated. Therefore, after receiving the data, the terminal firstly judges whether the data is first-transmitted data or retransmitted data, if the data is the first-transmitted data, the data is decoded, if the data is correctly decoded, the check is passed, the terminal generates ACK, and if the data is decoded incorrectly, the check is not passed, and the terminal generates NACK. The generated ACK or NACK is called HARQ-ACK confirmation information, the terminal feeds back the confirmation information to the base station, and the base station can judge whether the data needs to be retransmitted according to the confirmation information.

As will be understood below with reference to fig. 3, the step of obtaining the second SINR includes the following steps:

step S310: judging confidence;

step S320: acquiring corresponding MCS scheduling information;

step S330: judging whether the data is transmitted for the first time, namely whether the data is newly transmitted;

step S340: the terminal judges whether the data passes the verification;

step S350: if the data check is passed, determining whether the obtained scheduling MCS is smaller than the maintenance MCS, if so, executing step S360: taking the preset SINR as the second SINR, if the preset SINR is greater than or equal to the second SINR, executing step S370: adding the first value to the preset SINR to obtain a second SINR;

step S380: if the data check is not passed, determining whether the obtained scheduling MCS is smaller than the maintenance MCS, if so, executing step S390: subtracting the second value from the preset SINR to obtain a second SINR, and if the second value is greater than or equal to the second SINR, executing step S400: subtracting a third value from the preset SINR to obtain a second SINR;

step S410: if the received data is not the first-transmitted data, verifying the data and judging whether the data passes the verification;

if the data check is passed, execute step S420: taking the preset SINR as a second SINR, if the data check fails, executing step S430: and subtracting the second value from the preset SINR to obtain a second SINR.

Specifically, if the data is first-transmitted data, the terminal checks the data, and then generates NACK if the check fails, and generates ACK if the check passes, and if the terminal generates ACK, it continues to determine whether the scheduling MCS acquired from the base station is smaller than the historical maintenance MCS (referring to the MCS acquired last time), and if so, keeps the preset SINR, that is, the preset SINR at this time is taken as the second SINR, and if not, adds the first value to the preset SINR to obtain the second SINR. If the verification is not passed, NACK is generated, then whether the scheduling MCS acquired from the base station is smaller than the historical maintenance MCS is continuously judged, if yes, a second value is subtracted from the preset SINR to obtain a second SINR, and if not, a third value is subtracted from the preset SINR to obtain a second SINR.

If the data is not the first-transmitted data, the terminal checks the data, then NACK is generated if the check is not passed, ACK is generated if the check is passed, if the terminal generates ACK, the preset SINR is used as a second SINR, and if the terminal generates NACK, the second value is subtracted from the preset SINR to be used as the second SINR.

The preset SINR may be preset according to simulation experiments, and the first value may be Δ_ackThe value may be obtained by actual experiments, and the second value may be α Δ_nackWhere α refers to the linear filter factor, Δ_nackCan be according to Δ_ackThe following calculation formula is adopted to obtain: BLER ═ Δ_ack/(Δ_ack+Δ_nack) Wherein BLER can be obtained in advance, and the third value can be Δ_nack。

Therefore, the preset SINR can be corrected correspondingly according to the above manner, and then the second SINR for measuring the channel is obtained, so that a more accurate second SINR can be obtained, and then the CQI corresponding to the SINR is obtained after the first SINR and the second SINR are weighted and summed, so that the obtained CQI is more accurate, and thus the more accurate CQI is reported to the base station, so that better throughput can be obtained, and better matching can be achieved for the actual channel receiving capability and the data transmission rate of the terminal.

In addition, after obtaining the second SINR, before performing weighted summation on the second SINR and the first SINR, it may also be determined whether a timer of the RI corresponding to the first SINR is overtime, and if not, the first SINR and the second SINR are weighted summation to obtain the current SINR, where a process of the method may be as shown in fig. 4; if the time is out, the weighted summation is not needed, and the first SINR may be directly used as the current SINR, so that the obtained current SINR can be ensured to be closer to the actual situation.

In the step S310, in order to determine whether the obtained second SINR is accurate, a confidence level determination may be performed in advance, and the specific process includes: measuring a demodulation reference signal of the PDSCH to obtain a reference SINR, judging whether the reference SINR exceeds a second preset threshold value (the value can be flexibly set according to actual requirements), and if so, executing the following steps: and verifying the data to obtain a verification result.

Wherein the demodulation reference signal is used for demodulating data of the PDSCH signal, which is also generated by the base station to the terminal, therefore, the demodulation reference signal can be measured in the same way as the above-mentioned reference signal measurement to obtain the reference SINR, and determine whether the reference SINR exceeds the second preset threshold (which can be flexibly set according to actual requirements), if so, the noise of the current channel is considered to meet the requirement, that is, the demodulation reference signal meets the requirement, the subsequent steps can be continued, if the demodulation reference signal does not meet the requirement, the noise of the current channel is considered to be larger, the demodulation reference signal does not meet the requirement, the subsequently demodulated data is possibly inaccurate, the signal can be discarded, and the processing can be continued after the demodulation reference signal is received next time, thus, instantaneous fluctuation of the measurement result can be avoided, and the subsequently obtained SINR is ensured to be true and effective.

Referring to fig. 5, fig. 5 is a block diagram of an information reporting apparatus 100 according to an embodiment of the present disclosure, where the apparatus 100 may be a module, a program segment, or a code on an electronic device. It should be understood that the apparatus 100 corresponds to the above-mentioned embodiment of the method of fig. 1, and can perform various steps related to the embodiment of the method of fig. 1, and the specific functions of the apparatus 100 can be referred to the above description, and the detailed description is appropriately omitted here to avoid redundancy.

Optionally, the apparatus 100 comprises:

a current information obtaining module 110, configured to obtain current measured current downlink channel state information, where the current downlink channel state information includes combination information formed by a current rank indication RI and a current signal-to-interference-and-noise ratio SINR, where the current SINR is determined according to a first SINR obtained by measuring a reference signal sent by a network device and a second SINR obtained by measuring a physical downlink shared channel PDSCH;

a history information obtaining module 120, configured to obtain history downlink channel state information, where the history downlink channel state information includes N pieces of combined information formed by history RI and history SINR, and N is an integer greater than or equal to 1;

a transmission block calculation module 130, configured to calculate, according to the current downlink channel state information, the N +1 combination information in the historical downlink channel state information, and a set bandwidth of the network device during scheduling, a size of a transmission block corresponding to each combination information;

and an information reporting module 140, configured to determine a target SINR in the combined information with the largest transport block size, and obtain channel quality information CQI corresponding to the target SINR for reporting.

Optionally, the transmission block calculation module 130 is configured to obtain a corresponding modulation order and a target code rate according to the SINR in each combination information; and calculating the size of the transmission block corresponding to each combined information according to the modulation order and the target code rate corresponding to each combined information, the RI, the set bandwidth of the network equipment during scheduling and the number of the RE subcarriers.

Optionally, the historical information obtaining module 120 is configured to obtain initial historical downlink channel state information, where the initial historical downlink channel state information includes M pieces of combined information formed by historical RI and historical SINR, M is greater than or equal to N, and each piece of combined information is configured with a timer; and screening to obtain N pieces of combined information in which a timer does not time out, wherein the historical downlink channel state information comprises the N pieces of combined information.

Optionally, the current information obtaining module 110 is configured to:

receiving a reference signal sent by network equipment;

judging whether the timer corresponding to the current RI is overtime or not;

and if so, taking the initial SINR as the first SINR.

Optionally, the current information obtaining module 110 is further configured to determine whether the initial SINR exceeds a first preset threshold; if yes, executing the following steps: and judging whether the timer corresponding to the current RI is overtime.

Optionally, the current information obtaining module 110 is further configured to receive data transmitted by the network device through the PDSCH; verifying the data to obtain a verification result; and adjusting the preset SINR according to the checking result to obtain an adjusted second SINR.

Optionally, the current information obtaining module 110 is further configured to add the first numerical value to the preset SINR if the check result is that the preset SINR passes, and obtain a sum of the second SINR; and if the verification result is that the preset SINR does not pass, subtracting a second numerical value from the preset SINR, and obtaining a difference value as the second SINR.

Optionally, the current information obtaining module 110 is further configured to measure a demodulation reference signal of the PDSCH to obtain a reference SINR; judging whether the reference SINR exceeds a second preset threshold value or not; if yes, executing the following steps: and verifying the data to obtain a verification result.

It should be noted that, for the convenience and brevity of description, the specific working procedure of the above-described apparatus may refer to the corresponding procedure in the foregoing method embodiment, and the description is not repeated herein.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device for executing an information reporting method according to an embodiment of the present application, where the electronic device may be a terminal, and the electronic device may include: at least one processor 210, such as a CPU, at least one communication interface 220, at least one memory 230, and at least one communication bus 240. Wherein the communication bus 240 is used for realizing direct connection communication of these components. In the embodiment of the present application, the communication interface 220 of the device is used for performing signaling or data communication with other node devices. Memory 230 may be a high-speed RAM memory or a non-volatile memory (e.g., at least one disk memory). Memory 230 may optionally be at least one memory device located remotely from the aforementioned processor. The memory 230 stores computer readable instructions, which when executed by the processor 210, cause the electronic device to perform the method processes described above with reference to fig. 1.

It will be appreciated that the configuration shown in fig. 6 is merely illustrative and that the electronic device may include more or fewer components than shown in fig. 6 or have a different configuration than shown in fig. 6. The components shown in fig. 6 may be implemented in hardware, software, or a combination thereof.

Embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs the method processes performed by an electronic device in the method embodiment shown in fig. 1.

The present embodiments disclose 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, enable the computer to perform the methods provided by the above-described method embodiments, for example, comprising: acquiring currently measured current downlink channel state information, wherein the current downlink channel state information comprises combined information consisting of a current Rank Indication (RI) and a current signal to interference plus noise ratio (SINR), and the current SINR is determined according to a first SINR obtained by measuring a reference signal sent by network equipment and a second SINR obtained by measuring a Physical Downlink Shared Channel (PDSCH); acquiring historical downlink channel state information, wherein the historical downlink channel state information comprises N pieces of combined information consisting of historical RI and historical SINR, and N is an integer greater than or equal to 1; calculating the size of a transmission block corresponding to each piece of combined information according to the current downlink channel state information, the N +1 combined information in the historical downlink channel state information and the set bandwidth of the network equipment during scheduling; and determining a target SINR in the combined information with the largest transmission block size, and acquiring channel quality information CQI corresponding to the target SINR for reporting.

To sum up, the embodiments of the present application provide an information reporting method, an apparatus, an electronic device, and a readable storage medium, where N +1 pieces of combined information composed of RI and SINR in current downlink channel state information and historical downlink channel state information are obtained, then the size of a transmission block corresponding to each piece of combined information under a set bandwidth of a network device is calculated, then a target SINR in the combined information with the largest size of the transmission block is selected, and a CQI corresponding to the target SINR is obtained and reported, so that when a base station schedules a terminal, the maximum traffic can be scheduled by using the largest transmission block, and thus the base station can maximally utilize the transmission capability of a wireless channel, and improve system throughput.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

In addition, 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 units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

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 above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An information reporting method, the method comprising:

2. The method of claim 1, wherein the calculating, according to the N +1 combination information in the current downlink channel state information and the historical downlink channel state information and the set bandwidth of the network device during scheduling, the transport block size corresponding to each combination information comprises:

3. The method of claim 1, wherein the obtaining historical downlink channel state information comprises:

4. The method of claim 1, wherein the first SINR is obtained by:

receiving a reference signal sent by network equipment;

judging whether the timer corresponding to the current RI is overtime or not;

and if so, taking the initial SINR as the first SINR.

5. The method of claim 4, wherein after obtaining the initial SINR, further comprising:

judging whether the initial SINR exceeds a first preset threshold value or not;

if yes, executing the following steps: and judging whether the timer corresponding to the current RI is overtime.

6. The method of claim 1, wherein the second SINR is obtained by:

receiving data transmitted by the network equipment through the PDSCH;

verifying the data to obtain a verification result;

7. The method of claim 6, wherein the adjusting the preset SINR according to the checking result to obtain an adjusted second SINR includes:

8. The method of claim 6, wherein after receiving the data transmitted by the network device via the PDSCH, the method further comprises:

9. The method of any of claims 1-8, wherein the current SINR is a weighted sum of the first SINR and the second SINR.

10. An information reporting apparatus, comprising:

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

12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 9.