CN117424676A - Content detection method and device based on historical information and storage medium - Google Patents

Abstract

The application discloses a content detection method, device and storage medium of DCI1-1 of PDCCH (physical downlink control channel) based on historical information. According to rnti corresponding to the PDCCH, the historical variable configuration field corresponding to the PDCCH is inquired in the configuration information database to replace the variable field in the DCI1-1 bit sequence, so that the quick determination of the bit sequence of the DCI1-1 is realized, the content detection and the elimination of the variable field in the DCI1-1 bit sequence are avoided, the uniquely determined candidate configuration data are further checked, whether the configuration data of the PDCCH exist in the bit sequence of the DCI1-1 can be determined, the data calculation amount is reduced, and the content detection efficiency of the DCI1-1 is improved.

Description

Content detection method and device based on historical information and storage medium

Technical Field

The present disclosure relates to the field of 5G networks, and in particular, to a method, an apparatus, and a storage medium for detecting DCI1-1 of PDCCH based on history information.

Background

5G NR (New Radio) air interface monitoring device: the purposes of monitoring radio environment, positioning and identifying the UE, detecting content and the like are achieved by detecting wireless signals of uplink and downlink communication between the UE (User Equipment) and a base station. The air interface monitoring equipment does not interact with the base station and the mobile phone, and only monitors the radio signals in the air interface in a silent mode, so that the aim of identifying the radio signals is fulfilled.

PDCCH (Physical downlink control channel ) whose payload content is DCI (Downlink control information dedicated control information). DCI has a plurality of formats (DCI 1-0, DCI1-1, DCI0-0, DCI1-1, etc.), where DCI1-1 is used to indicate the physical parameter configuration of PDSCH (Physical downlink shared channel ) when UE is in RRC (Radio Resource Control, radio resource control) connected state, and the payload of PDSCH can be obtained only by resolving the correct PDSCH configuration through DCI1-1, and the payload of PDSCH is exactly what is needed by 5G system.

The parsing of DCI1-1 depends on the context of the UE. The same bit has different meanings in different contexts. For the UE, the parameter configuration thereof can be obtained through RRC reconfiguration message (modifying network connection), while for the third party monitoring device, since the reconfiguration message of the target UE is encrypted, the third party monitoring device cannot obtain the context of the target UE, and can only obtain the real meaning of DCI1-1 through data detection.

At present, in the data monitoring method for DCI1-1 content in the prior art, after channel estimation, equalization, rate-de-matching, LDPC decoding and CRC checking are performed on each PDSCH configuration, whether the PDSCH configuration is effective or not can be judged, the calculation amount is large in the whole flow, the time consumption is long, and especially the LDPC decoding takes the longest time, so that the DCI1-1 content detection efficiency of the PDSCH is low.

Therefore, how to solve the problem of low DCI1-1 content detection efficiency of PDSCH is a technical problem to be solved.

Disclosure of Invention

The application provides a content detection method, a device, computer equipment and a storage medium for DCI1-1 of PDCCH based on historical information, so as to improve the content detection efficiency of DCI1-1 of PDSCH.

In a first aspect, the present application provides a method for detecting content of DCI1-1 of PDCCH based on history information, the method comprising:

acquiring a bit sequence of downlink control information DCI1-1 in a physical downlink control channel PDCCH, wherein the bit sequence comprises a variable field and a fixed field;

inquiring whether a history variable configuration field corresponding to the PDCCH exists in a preset configuration information database based on a wireless network temporary identifier rnti corresponding to the PDCCH;

when the historical variable configuration field corresponding to the PDCCH exists in a configuration information database, the bit sequence of the DCI1-1 is recombined based on the historical variable configuration field and the fixed field, and candidate configuration data corresponding to the DCI1-1 is obtained;

checking the candidate configuration data based on a preset checking flow to obtain a configuration checking result;

and when the configuration check result is that the check passes, determining that the candidate configuration data is the configuration data of the PDCCH.

In a second aspect, the present application further provides a content detection apparatus for DCI1-1 of PDCCH based on history information, the apparatus including:

a bit sequence acquisition module, configured to acquire a bit sequence of downlink control information DCI1-1 in a physical downlink control channel PDCCH, where the bit sequence includes a variable field and a fixed field;

the historical information inquiry module is used for inquiring whether a historical variable configuration field corresponding to the PDCCH exists in a preset configuration information database based on a wireless network temporary identifier rnti corresponding to the PDCCH;

the candidate configuration obtaining module is used for reorganizing the bit sequence of the DCI1-1 based on the history variable configuration field and the fixed field when the history variable configuration field corresponding to the PDCCH exists in a configuration information database, so as to obtain candidate configuration data corresponding to the DCI 1-1;

the candidate configuration verification module is used for verifying the candidate configuration data based on a preset verification flow to obtain a configuration verification result;

and the configuration data determining module is used for determining the candidate configuration data as the configuration data of the PDCCH when the configuration verification result is that the verification passes.

In a third aspect, the present application further provides a computer readable storage medium storing a computer program, where the computer program when executed by a processor causes the processor to implement a method for detecting content of DCI1-1 of PDCCH based on history information as described above.

The application discloses a content detection method, a device, computer equipment and a storage medium of DCI1-1 of PDCCH based on historical information, wherein the method comprises the following steps: acquiring a bit sequence of downlink control information DCI1-1 in a physical downlink control channel PDCCH, wherein the bit sequence comprises a variable field and a fixed field; inquiring whether a history variable configuration field corresponding to the PDCCH exists in a preset configuration information database based on a wireless network temporary identifier rnti corresponding to the PDCCH; when the historical variable configuration field corresponding to the PDCCH exists in a configuration information database, the bit sequence of the DCI1-1 is recombined based on the historical variable configuration field and the fixed field, and candidate configuration data corresponding to the DCI1-1 is obtained; checking the candidate configuration data based on a preset checking flow to obtain a configuration checking result; and when the configuration check result is that the check passes, determining that the candidate configuration data is the configuration data of the PDCCH. By means of the method, according to rnti corresponding to the PDCCH, historical variable configuration fields corresponding to the PDCCH are inquired in a configuration information database to replace variable fields in a DCI1-1 bit sequence, quick determination of the bit sequence of the DCI1-1 is achieved, content detection and elimination of the variable fields in the DCI1-1 bit sequence are avoided, and further, uniquely determined candidate configuration data are checked, so that whether the configuration data of the PDCCH exist in the bit sequence of the DCI1-1 can be determined, the data calculation amount is reduced, and the content detection efficiency of the DCI1-1 is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic flowchart of a first implementation manner of a content detection method of DCI1-1 of PDCCH based on history information provided in an embodiment of the present application;

FIG. 2 is a flowchart illustrating an embodiment of content detection of DCI1-1 based on history information according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a second implementation of a method for detecting content of DCI1-1 of PDCCH based on history information according to an embodiment of the present application;

fig. 4 is a schematic block diagram of a computer device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.

It is to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic flowchart of a first embodiment of a method for detecting content of DCI1-1 of PDCCH based on history information according to an embodiment of the present application. The content detection method of DCI1-1 of PDCCH based on the history information can be applied to a server.

As shown in fig. 1, the method for detecting the content of DCI1-1 of the PDCCH based on the history information specifically includes steps S101 to S105.

S101, acquiring a bit sequence of downlink control information DCI1-1 in a physical downlink control channel PDCCH, wherein the bit sequence comprises a variable field and a fixed field;

in an embodiment, the bit obtained by performing channel estimation, equalization, de-rate matching and polar decoding operations on the PDCCH is the bit sequence of DCI 1-1.

In one embodiment, the bit sequence of Dci1-1 includes a variable field and a fixed field, the variable field being a field with an indeterminate bit length, i.e., there are a plurality of results for the bit length of the variable field, and the bit length of the fixed field is determined. As shown in table 1, table 1 is a field analysis of Dci 1-1:

TABLE 1 DCI1-1 analysis of the various fields

In an embodiment, the variable fields include a BWP (Bandwidth Part) configuration field, a frequency domain resource allocation field, and an antenna port field. As shown in table 2, table 2 is a field analysis of variable fields.

Fields	Description of the invention
		BWP configuration field	1bit or 2 bits
Frequency domain resource allocation field	Type0 or dynamic
		Antenna port field	Related to dmrs type and maxlen, possibly 4-6 bits

In an embodiment, the reason for the uncertainty in table 2 is that RRC Reconfiguration messages of the target UE (User Equipment) are encrypted, which results in uncertainty in the configuration of the air interface monitoring device to the target UE, and only the true configuration of the target is obtained by means of detection.

In an embodiment, for a certain UE, the variable fields in table 2 are not changed during RRC (Radio Resource Control ) connection. And each RRC connection procedure corresponds to a user identity rnti (Radio Network Temporary Identity ), the variable fields in table 2 are not changed for one rnti. Thus, after obtaining the actual configuration of the target UE once, the configuration in table 2, i.e. the curing variable field, can be cured for the target UE. When DCI1-1 detection is carried out on the target UE in the follow-up mode, detection on a variable field can be reduced, and therefore the DIC1-1 content detection efficiency of the whole system is improved.

S102, inquiring whether a history variable configuration field corresponding to the PDCCH exists in a preset configuration information database based on a wireless network temporary identifier rnti corresponding to the PDCCH;

in an embodiment, the history variable configuration field includes a BWP configuration field bit number, a frequency domain resource allocation field bit number, and an antenna port field bit number.

In an embodiment, the historical configuration field corresponding to rnti, that is, the number of BWP configuration field bits, the number of frequency domain resource allocation field bits, and the number of antenna port field bits, is searched in a preset configuration information database.

In an embodiment, rnti is the identity of the UEs, each UE having a unique rnti identity.

BWP configuration field bit number: 1bit or 2bit, for example, when the system configures only one initial BWP, then it is 1 bit.

Number of frequency domain resource allocation fields bit: there are two types of type0 or dynamics. For example, when Type0, the bit number is 1, type0: n (N) _RBG Wherein N is _RBG Is the number of RB groups.

Antenna port field: regarding dmrs type and maxlen, there may be 4-6 bits, for example, when dmrs is type1 and maxlen is 1, the antenna port field is 4 bits.

S103, when the historical variable configuration field corresponding to the PDCCH exists in a configuration information database, recombining the bit sequence of the DCI1-1 based on the historical variable configuration field and the fixed field to obtain candidate configuration data corresponding to the DCI 1-1;

in one embodiment, when a historical configuration field corresponding to rnti exists in the configuration information database, the historical configuration field is extracted from the configuration information database, and then a variable field in a bit sequence of DCI1-1 is replaced by the historical configuration field, that is, a fixed field in the bit sequence of DCI1-1 and the historical configuration field form a new bit sequence of DCI1-1 as candidate configuration data.

S104, checking the candidate configuration data based on a preset checking flow to obtain a configuration checking result;

in one embodiment, the pre-set check flow may include equalization, rate matching, LDPC (Low Density Parity Check Code ) decoding, and CRC checking.

Channel equalization refers to an anti-fading measure taken to improve the transmission performance of a communication system in a fading channel. It is mainly aimed at eliminating or weakening the inter-code crosstalk problem resulted from multipath time delay in broadband communication. The mechanism is to compensate the characteristics of the channel or the whole transmission system, and aiming at the characteristics of constant parameters or variable parameters of the channel, the data rate is different, and the equalization has various structural modes, including frequency domain equalization, time domain equalization and the like.

Rate matching refers to the bits on the transmission channel being retransmitted or punctured. The number of bits in a transport channel may vary in different TTIs (Transmission Time Interval, basic time units of dynamically scheduled resources) while the configured physical channel capacity (or number of bearer bits) is fixed. Thus, when the data bits of different TTIs change, some bits in the input sequence will be retransmitted or punctured in order to match the physical channel's bearer capability, to ensure that the total bit rate after transport channel multiplexing is consistent with the configured physical channel bearer capability.

An LDPC code is one of linear block codes for correcting errors occurring during transmission. The error correction capability of the code is very close to the theoretical maximum (i.e., shannon limit). Among them, block codes, also called block codes, are one of channel coding techniques. It adds extra bits in the original message sent by the transmitting end on the premise that the bit rate does not exceed the channel capacity, so that the receiving end can decode with the minimum error rate (theoretical value is 0). The main characteristic of the block code is that its cipher length is fixed. Generally, a block code will convert an information character s containing k digits into a code character C(s) containing n digits; i.e. the block code length is n. LDPC decoding refers to that a decoding algorithm (such as a bit flipping algorithm, a belief propagation algorithm and the like) makes a decision on whether a channel output bit is 1 or 0, so that correct transmission information is obtained, and only 0 and 1 participate in operation in the decoding process.

CRC is a channel coding technique for generating a short fixed bit check code based on data such as network packets or computer files, and is mainly used for detecting or checking errors that may occur after data transmission or storage. It uses the principle of division and remainder to make error detection.

Illustratively, the CRC check procedure includes: selecting (a divisor (binary bit string) for dividing the received frame when checking at the receiving end), looking at the binary bit number (assumed to be k bits) of the selected divisor, adding k-1 bit '0' after the data frame (assumed to be m bits) to be transmitted, dividing the new frame (total m+k-1 bits) added with k-1 bits by the divisor in a mode of 'modulo 2 division', obtaining remainder (binary bit string) which is CRC check code of the frame, also called FCS (frame check sequence), attaching the check code to the back of the original data frame (m bit data frame), constructing a new frame, transmitting the new frame to the receiving end, dividing the new frame by the previous selected divisor in a mode of 'modulo 2 division' at the receiving end, if the remainder is not found, indicating that the frame has no error in transmission process, otherwise, generating error.

And S105, when the configuration verification result is that verification passes, determining that the candidate configuration data is the configuration data of the PDCCH.

In an embodiment, if the CRC check on the target candidate configuration passes, this target candidate configuration is the correct bit sequence of DCI1-1, i.e. the actual configuration of the PDCCH. And if the verification is not passed, the target candidate configuration is not the true configuration of the PDCCH, the detection is ended, and the verification of the next target candidate configuration is carried out.

In an embodiment, when the configuration check result corresponding to the candidate configuration data is that the check fails, it is determined that no configuration data of the PDCCH exists in the bit sequence of the DCI 1-1.

If the verification is not passed, the target candidate configuration is not the true configuration of the PDCCH, and the content detection of the DCI1-1 is ended.

The embodiment provides a content detection method of DCI1-1 of PDCCH based on history information, which queries a history variable configuration field corresponding to the PDCCH in a configuration information database according to rnti corresponding to the PDCCH, replaces a variable field in a DCI1-1 bit sequence, realizes quick determination of the bit sequence of DCI1-1, avoids content detection and elimination of the variable field in the DCI1-1 bit sequence, and further checks uniquely determined candidate configuration data, so that whether the configuration data of the PDCCH exist in the bit sequence of DCI1-1 can be determined, the data calculation amount is reduced, and the content detection efficiency of DCI1-1 is improved.

Referring to fig. 2, fig. 2 is a flowchart illustrating an embodiment of detecting content of DCI1-1 based on history information according to an embodiment of the present application.

As shown in fig. 2, the content detection scheme of DCI1-1 provided in this embodiment includes two types, and when a history configuration field corresponding to rnti exists in the configuration information database, the history configuration field is extracted and recombined with a fixed field in a bit sequence of DCI1-1 to form candidate configuration data of PDCCH. If the historical configuration field corresponding to rnti does not exist in the configuration information database, the combination of the variable fields in DCI1-1 is exhausted, then a plurality of candidate configuration data are generated by combining the fixed fields, and content detection is sequentially carried out on each candidate configuration data.

Referring to fig. 3, fig. 3 is a schematic flowchart of a second embodiment of a method for detecting content of DCI1-1 of PDCCH based on history information according to an embodiment of the present application.

As shown in fig. 3, based on the embodiment shown in fig. 1, after step S102, the method further includes:

s201, when a history configuration field of the rnti does not exist in the configuration information database, acquiring a candidate configuration set of the PDCCH based on at least one configuration combination corresponding to the variable field and the fixed field, wherein the candidate configuration set of the PDCCH comprises at least one candidate configuration;

in an embodiment, when the historical configuration field corresponding to rnti does not exist in the configuration information database, the variable field in the bit sequence of DCI1-1 cannot be determined, that is, the number of bits of the BWP configuration field, the number of bits of the frequency domain resource allocation field and the number of antenna ports cannot be determined, and at least two possibilities exist for each variable field, at this time, content detection needs to be performed for each possible combination.

Further, based on an exhaustion method, combining the variable fields to obtain a variable field combination set, wherein the variable field combination set comprises at least one variable field combination; and obtaining a candidate configuration set of the PDCCH based on the combination result of each variable field combination and the fixed field in the variable field combination set.

In an embodiment, according to the bit lengths corresponding to the variable fields in table 2, all possible combinations are exhausted through an exhaustion method, for example, the BWP configuration field (1 bit) +the frequency domain resource allocation field (Type 0) +the antenna port field (4 bit), and the exhaustion result in a total of 2×2×3=12 combinations.

In an embodiment, for all the variable field combinations obtained through exhaustion, the variable field combinations are recombined with the fixed fields in the bit sequence of DCI1-1 respectively, so that 12 PDSCH configurations can be obtained, and the configuration is used as a set of PDSCH candidate configurations, i.e. a candidate configuration set, and the size of the set is 12.

S202, detecting whether undetected target candidate configurations exist in the candidate configuration set;

in an embodiment, when it is detected that the undetected target candidate configuration does not exist in the candidate configuration set, it is determined that configuration data of the PDCCH does not exist in a bit sequence of the DCI 1-1.

In one embodiment, for a set of candidate configurations, each candidate configuration is detected in turn. If there is no undetected PDSCH configuration in the candidate configuration set, i.e., each candidate configuration in the candidate configuration set has undergone the content detection procedure of DCI1-1, then there is no correct PDSCH configuration in the bit sequence of this DCI1-1, and the detection is ended. If at least one candidate configuration which does not do DCI1-1 content detection exists in the candidate configuration set, the candidate configuration is used as a target candidate configuration, and the subsequent flow of DCI1-1 content detection is executed on the target candidate configuration.

S203, checking the target candidate configuration based on the preset checking flow when the undetected target candidate configuration exists in the candidate configuration set, and obtaining the configuration checking result corresponding to the target candidate configuration;

in an embodiment, when at least one target candidate configuration which does not pass through the DCI1-1 content detection procedure exists in the candidate configuration set, the target candidate configurations are filtered out for DCI1-1 content detection.

In one embodiment, the pre-set check flow may include equalization, rate matching, LDPC (Low Density Parity Check Code ) decoding, and CRC checking.

S204, when the configuration check result corresponding to the target candidate configuration passes, determining that the target candidate configuration is the configuration data of the PDCCH.

In an embodiment, if the CRC check on the target candidate configuration passes, this target candidate configuration is the correct bit sequence of DCI1-1, i.e. the actual configuration of the PDCCH. And if the verification is not passed, the target candidate configuration is not the true configuration of the PDCCH, the detection is ended, and the verification of the next target candidate configuration is carried out.

Further, after S204, the method further includes: acquiring variable field data in the target candidate configuration; and storing the rnti corresponding to the PDCCH and the variable field data into the configuration information database to obtain the historical variable configuration field corresponding to the PDCCH.

In an embodiment, after the configuration verification of the target candidate is passed, the configuration data of the target candidate configured as the PDCCH is determined, and at this time, variable field data in the target candidate configuration, that is, the number of BWP configuration field bits, the number of frequency domain resource allocation field bits, and the number of antenna ports fields, is extracted, and then the variable field information and the rnti corresponding to the PDCCH are stored in a configuration information database as a historical variable configuration field corresponding to the rnti.

Referring to fig. 4, fig. 4 is a schematic block diagram of a computer device according to an embodiment of the present application. The computer device may be a server.

With reference to FIG. 4, the computer device includes a processor, memory, and a network interface connected by a system bus, where the memory may include a non-volatile storage medium and an internal memory.

The non-volatile storage medium may store an operating system and a computer program. The computer program comprises program instructions that, when executed, cause the processor to perform any one of the methods for detecting the content of DCI1-1 of PDCCH based on history information.

The processor is used to provide computing and control capabilities to support the operation of the entire computer device.

The internal memory provides an environment for the execution of a computer program in the non-volatile storage medium, which when executed by the processor, causes the processor to perform any one of the methods for detecting the content of DCI1-1 of PDCCH based on history information.

The network interface is used for network communication such as transmitting assigned tasks and the like. Those skilled in the art will appreciate that the structures shown in FIG. 4 are block diagrams only and do not constitute a limitation of the computer device on which the present aspects apply, and that a particular computer device may include more or less components than those shown, or may combine some of the components, or have a different arrangement of components.

It should be appreciated that the processor may be a central processing unit (CentralProcessingUnit, CPU), but may also be other general purpose processors, digital signal processors (DigitalSignalProcessor, DSP), application specific integrated circuits (ApplicationSpecificIntegratedCircuit, ASIC), field programmable gate arrays (Field-ProgrammableGateArray, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. Wherein the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Wherein in one embodiment the processor is configured to run a computer program stored in the memory to implement the steps of:

acquiring a bit sequence of downlink control information DCI1-1 in a physical downlink control channel PDCCH, wherein the bit sequence comprises a variable field and a fixed field;

inquiring whether a history variable configuration field corresponding to the PDCCH exists in a preset configuration information database based on a wireless network temporary identifier rnti corresponding to the PDCCH;

when the historical variable configuration field corresponding to the PDCCH exists in a configuration information database, the bit sequence of the DCI1-1 is recombined based on the historical variable configuration field and the fixed field, and candidate configuration data corresponding to the DCI1-1 is obtained;

checking the candidate configuration data based on a preset checking flow to obtain a configuration checking result;

and when the configuration check result is that the check passes, determining that the candidate configuration data is the configuration data of the PDCCH.

In one embodiment, the variant fields include a partial wideband BWP (Bandwidth Part) configuration field, a frequency domain resource allocation field, and an antenna port field.

In one embodiment, the history variable configuration field includes a BWP configuration field bit number, a frequency domain resource allocation field bit number, and an antenna port field bit number.

In one embodiment, after implementing the checking process based on the preset checking process, the processor is further configured to implement:

and when the configuration check result corresponding to the candidate configuration data is that the check fails, determining that the configuration data of the PDCCH does not exist in the bit sequence of the DCI 1-1.

In one embodiment, after implementing the rnti based on the radio network temporary identifier corresponding to the PDCCH, the processor is further configured to, after querying whether a history configuration field of the rnti exists in a preset configuration information database, implement:

when the historical configuration field of the rnti does not exist in the configuration information database, acquiring a candidate configuration set of the PDCCH based on at least one configuration combination corresponding to the variable field and the fixed field, wherein the candidate configuration set of the PDCCH comprises at least one candidate configuration;

detecting whether an undetected target candidate configuration exists in the candidate configuration set;

when the undetected target candidate configuration exists in the candidate configuration set, checking the target candidate configuration based on the preset checking flow to obtain the configuration checking result corresponding to the target candidate configuration;

and when the configuration check result corresponding to the target candidate configuration passes, determining that the target candidate configuration is the configuration data of the PDCCH.

In one embodiment, when implementing the obtaining the candidate configuration set of the PDCCH based on the at least one configuration combination corresponding to the variable field and the fixed field, the processor is configured to implement:

combining the variable fields based on an exhaustion method to obtain a variable field combination set, wherein the variable field combination set comprises at least one variable field combination;

and obtaining a candidate configuration set of the PDCCH based on the combination result of each variable field combination and the fixed field in the variable field combination set.

In one embodiment, after determining that the target candidate configuration is the configuration data of the PDCCH when the configuration check result corresponding to the target candidate configuration passes, the processor is further configured to implement:

acquiring variable field data in the target candidate configuration;

and storing the rnti corresponding to the PDCCH and the variable field data into the configuration information database to obtain the historical variable configuration field corresponding to the PDCCH.

In one embodiment, the processor, after implementing the detecting whether there is an undetected target candidate configuration in the candidate configuration set, is further configured to implement:

and when detecting that the undetected target candidate configuration does not exist in the candidate configuration set, determining that the configuration data of the PDCCH does not exist in the bit sequence of the DCI 1-1.

An embodiment of the present application further provides a computer readable storage medium, where the computer readable storage medium stores a computer program, where the computer program includes program instructions, and the processor executes the program instructions to implement a method for detecting DCI1-1 content of any one of the PDCCHs based on historical information provided in the embodiments of the present application.

The computer readable storage medium may be an internal storage unit of the computer device according to the foregoing embodiment, for example, a hard disk or a memory of the computer device. The computer readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk provided on the computer device, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash memory card (FlashCard), etc.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A method for detecting content of DCI1-1 of PDCCH based on history information, comprising:

acquiring a bit sequence of downlink control information DCI1-1 in a physical downlink control channel PDCCH, wherein the bit sequence comprises a variable field and a fixed field;

inquiring whether a history variable configuration field corresponding to the PDCCH exists in a preset configuration information database based on a wireless network temporary identifier rnti corresponding to the PDCCH;

when the historical variable configuration field corresponding to the PDCCH exists in a configuration information database, the bit sequence of the DCI1-1 is recombined based on the historical variable configuration field and the fixed field, and candidate configuration data corresponding to the DCI1-1 is obtained;

checking the candidate configuration data based on a preset checking flow to obtain a configuration checking result;

and when the configuration check result is that the check passes, determining that the candidate configuration data is the configuration data of the PDCCH.

2. The method for detecting the content of DCI1-1 of a PDCCH based on history information according to claim 1, wherein the variable fields include a partial wideband BWP configuration field, a frequency domain resource allocation field and an antenna port field.

3. The method for detecting the content of DCI1-1 of PDCCH based on history information according to claim 2, wherein the history variable configuration field includes a BWP configuration field bit number, a frequency domain resource allocation field bit number and an antenna port field bit number.

4. The method for detecting the content of DCI1-1 of a PDCCH based on history information according to claim 1, wherein the checking the candidate configuration data based on a preset checking procedure, after obtaining a configuration check result, further comprises:

and when the configuration check result corresponding to the candidate configuration data is that the check fails, determining that the configuration data of the PDCCH does not exist in the bit sequence of the DCI 1-1.

5. The method for detecting the content of DCI1-1 of a PDCCH based on history information according to claim 1, wherein after querying whether a history configuration field of a preset configuration information database exists on the basis of a radio network temporary identifier rnti corresponding to the PDCCH, further comprises:

when the historical configuration field of the rnti does not exist in the configuration information database, acquiring a candidate configuration set of the PDCCH based on at least one configuration combination corresponding to the variable field and the fixed field, wherein the candidate configuration set of the PDCCH comprises at least one candidate configuration;

detecting whether an undetected target candidate configuration exists in the candidate configuration set;

when the undetected target candidate configuration exists in the candidate configuration set, checking the target candidate configuration based on the preset checking flow to obtain the configuration checking result corresponding to the target candidate configuration;

and when the configuration check result corresponding to the target candidate configuration passes, determining that the target candidate configuration is the configuration data of the PDCCH.

6. The method for detecting content of DCI1-1 of a PDCCH based on history information according to claim 5, wherein the obtaining the candidate configuration set of the PDCCH based on at least one configuration combination corresponding to the variable field and the fixed field includes:

combining the variable fields based on an exhaustion method to obtain a variable field combination set, wherein the variable field combination set comprises at least one variable field combination;

and obtaining a candidate configuration set of the PDCCH based on the combination result of each variable field combination and the fixed field in the variable field combination set.

7. The method for detecting content of DCI1-1 of a PDCCH based on history information according to claim 5, wherein when a configuration check result corresponding to the target candidate configuration passes, determining that the target candidate configuration is configuration data of the PDCCH further comprises:

acquiring variable field data in the target candidate configuration;

and storing the rnti corresponding to the PDCCH and the variable field data into the configuration information database to obtain the historical variable configuration field corresponding to the PDCCH.

8. The method for detecting the content of DCI1-1 of a PDCCH based on history information according to claim 5, further comprising, after detecting whether there is an undetected target candidate configuration in the candidate configuration set:

and when detecting that the undetected target candidate configuration does not exist in the candidate configuration set, determining that the configuration data of the PDCCH does not exist in the bit sequence of the DCI 1-1.

9. A content detection apparatus for DCI1-1 of PDCCH based on history information, comprising:

a bit sequence acquisition module, configured to acquire a bit sequence of downlink control information DCI1-1 in a physical downlink control channel PDCCH, where the bit sequence includes a variable field and a fixed field;

the historical information inquiry module is used for inquiring whether a historical variable configuration field corresponding to the PDCCH exists in a preset configuration information database based on a wireless network temporary identifier rnti corresponding to the PDCCH;

the candidate configuration obtaining module is used for reorganizing the bit sequence of the DCI1-1 based on the history variable configuration field and the fixed field when the history variable configuration field corresponding to the PDCCH exists in a configuration information database, so as to obtain candidate configuration data corresponding to the DCI 1-1;

the candidate configuration verification module is used for verifying the candidate configuration data based on a preset verification flow to obtain a configuration verification result;

and the configuration data determining module is used for determining the candidate configuration data as the configuration data of the PDCCH when the configuration verification result is that the verification passes.

10. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which when executed by a processor, causes the processor to implement the method for detecting content of DCI1-1 of PDCCH based on history information according to any one of claims 1 to 7.