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

Abstract

This application discloses a method, apparatus, and storage medium for DCI1-1 content detection based on historical information of PDCCH. The method of this application queries the historical variable configuration field corresponding to the PDCCH in the configuration information database according to the rnti corresponding to the PDCCH, and replaces the variable field in the DCI1-1 bit sequence. This achieves rapid determination of the DCI1-1 bit sequence, avoiding content detection and exclusion of variable fields in the DCI1-1 bit sequence. Then, by verifying the uniquely determined candidate configuration data, it can be determined whether the PDCCH configuration data exists in the DCI1-1 bit sequence, reducing the amount of data computation and improving the content detection efficiency of DCI1-1.

Description

Technical Field

[0001] This application relates to the field of 5G network technology, and in particular to a content detection method, apparatus and storage medium for DCI1-1 of PDCCH based on historical information. Background Technology

[0002] 5G NR (New Radio) air interface monitoring equipment: This equipment monitors the radio environment, locates and identifies the UE (User Equipment) and identifies content by detecting the uplink and downlink radio signals between the UE and the base station. The air interface monitoring equipment does not interact with the base station or mobile phone; it silently monitors the radio signals in the air interface to achieve wireless signal identification.

[0003] The PDCCH (Physical Downlink Control Channel) carries DCI (Downlink Control Information) as its payload. DCI has various formats (DCI1-0, DCI1-1, DCI0-0, DCI1-1, etc.). DCI1-1 is used by the UE in RRC (Radio Resource Control) connected state to indicate the physical parameter configuration of the PDSCH (Physical Downlink Shared Channel). Only by parsing the correct PDSCH configuration from DCI1-1 can the PDSCH payload be obtained, and the PDSCH payload is precisely what the 5G system requires.

[0004] The interpretation of DCI1-1 depends on the UE's context. The same bit can have different meanings in different contexts. For the UE, its parameter configuration can be obtained through the RRC reconfiguration message (modifying network connection). However, for third-party monitoring devices, since the target UE's reconfiguration message is encrypted, the third-party monitoring devices cannot obtain the target UE's context and can only obtain the true meaning of DCI1-1 through data detection.

[0005] Currently, existing methods for monitoring DCI1-1 content require channel estimation, equalization, rate matching, LDPC decoding, and CRC verification for each PDSCH configuration before determining its validity. This process is computationally intensive and time-consuming, with LDPC decoding being the most time-consuming step, resulting in low efficiency for DCI1-1 content detection in PDSCH.

[0006] Therefore, how to solve the low efficiency of DCI1-1 content detection in PDSCH has become an urgent technical problem. Summary of the Invention

[0007] This application provides a method, apparatus, computer equipment, and storage medium for DCI1-1 content detection of PDSCH based on historical information, so as to improve the efficiency of DCI1-1 content detection of PDSCH.

[0008] In a first aspect, this application provides a content detection method for DCI1-1 based on PDCCH using historical information, the method comprising:

[0009] Obtain the bit sequence of downlink control information DCI1-1 in the physical downlink control channel PDCCH, wherein the bit sequence includes a variable field and a fixed field;

[0010] Based on the temporary wireless network identifier rnti corresponding to the PDCCH, query the preset configuration information database to see if the historical variable configuration field corresponding to the PDCCH exists;

[0011] When the historical variable configuration field corresponding to the PDCCH is found in the configuration information database, the bit sequence of DCI1-1 is reassembled based on the historical variable configuration field and the fixed field to obtain the candidate configuration data corresponding to DCI1-1;

[0012] Based on a preset verification process, the candidate configuration data is verified to obtain the configuration verification result;

[0013] When the configuration verification result is successful, the candidate configuration data is determined to be the configuration data of the PDCCH.

[0014] Secondly, this application also provides a content detection device for DCI1-1 of PDCCH based on historical information, the device comprising:

[0015] The bit sequence acquisition module is used to acquire the bit sequence of downlink control information DCI1-1 in the physical downlink control channel PDCCH, wherein the bit sequence includes a variable field and a fixed field;

[0016] The historical information query module is used to query whether the historical variable configuration field corresponding to the PDCCH exists in the preset configuration information database based on the wireless network temporary identifier rnti corresponding to the PDCCH.

[0017] The candidate configuration acquisition module is used to reassemble the bit sequence of DCI1-1 based on the historical variable configuration field and the fixed field when the configuration information database contains the historical variable configuration field corresponding to the PDCCH, so as to obtain the candidate configuration data corresponding to the DCI1-1.

[0018] The candidate configuration verification module is used to verify the candidate configuration data based on a preset verification process and obtain the configuration verification result.

[0019] The configuration data determination module is used to determine the candidate configuration data as the configuration data of the PDCCH when the configuration verification result is that the verification is passed.

[0020] Thirdly, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to implement the content detection method of DCI1-1 based on historical information PDCCH as described above.

[0021] This application discloses a method, apparatus, computer device, and storage medium for detecting the content of DCI1-1 in a PDCCH based on historical information. The method includes: acquiring a bit sequence of downlink control information (DCI1-1) in the Physical Downlink Control Channel (PDCCH), wherein the bit sequence includes a variable field and a fixed field; querying a preset configuration information database based on the radio network temporary identifier (rnti) corresponding to the PDCCH to determine whether a historical variable configuration field corresponding to the PDCCH exists; when the historical variable configuration field corresponding to the PDCCH is found in the configuration information database, recombining the bit sequence of DCI1-1 based on the historical variable configuration field and the fixed field to obtain candidate configuration data corresponding to DCI1-1; verifying the candidate configuration data based on a preset verification process to obtain a configuration verification result; and determining the candidate configuration data as the configuration data of the PDCCH when the configuration verification result is a successful verification. By using the above method, this application queries the historical variable configuration field corresponding to PDCCH in the configuration information database based on the rnti corresponding to PDCCH, replaces the variable field in the DCI1-1 bit sequence, realizes the rapid determination of the bit sequence of DCI1-1, avoids the content detection and exclusion of variable fields in the DCI1-1 bit sequence, and then verifies the uniquely determined candidate configuration data, thereby determining whether there is PDCCH configuration data in the bit sequence of DCI1-1, reducing the amount of data calculation and improving the content detection efficiency of DCI1-1. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic flowchart of the first embodiment of a content detection method for DCI1-1 of PDCCH based on historical information provided in this application;

[0024] Figure 2 A flowchart illustrating an implementation method of DCI1-1 content detection based on historical information provided in this application embodiment;

[0025] Figure 3 This is a schematic flowchart of a second embodiment of a content detection method for DCI1-1 of PDCCH based on historical information provided in this application.

[0026] Figure 4 This is a schematic block diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the described order. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0029] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope 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 unless the context clearly indicates otherwise.

[0030] It should also be understood that the term "and / or" as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0031] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] Please see Figure 1 , Figure 1 This is a schematic flowchart illustrating a first embodiment of a PDCCH-based DCI1-1 content detection method based on historical information, provided in this application. This PDCCH-based DCI1-1 content detection method can be applied to servers.

[0033] like Figure 1 As shown, the content detection method of DCI1-1 based on historical information PDCCH specifically includes steps S101 to S105.

[0034] S101. Obtain the bit sequence of downlink control information DCI1-1 in the physical downlink control channel PDCCH, wherein the bit sequence includes a variable field and a fixed field;

[0035] In one embodiment, the bits obtained by performing channel estimation, equalization, rate matching, and polar decoding on the PDCCH are the bit sequence of DCI1-1.

[0036] In one embodiment, the bit sequence of Dci1-1 includes a variable field and a fixed field. The variable field refers to a field with an uncertain bit length, meaning that the bit length of the variable field can have multiple possible outcomes, while the bit length of the fixed field is fixed. As shown in Table 1, Table 1 is a field analysis of Dci1-1:

[0037] Table 1 Analysis of each field in DCI1-1

[0038]

[0039]

[0040]

[0041]

[0042] In one embodiment, the variable fields include a BWP (Bandwidth Part) configuration field, a frequency domain resource allocation field, and an antenna port field. Table 2 shows the field analysis of the variable fields.

[0043] Fields illustrate BWP configuration fields 1 bit or 2 bits Frequency domain resource allocation field Type 0 or dynamic Antenna port field It depends on the dmrs type and maxlen, and may be 4-6 bits.

[0044] In one embodiment, the uncertainty in Table 2 is due to the encryption of the RRC Reconfiguration message of the target UE (User Equipment), which makes the configuration of the target UE uncertain for the air interface monitoring device. The true configuration of the target can only be obtained through detection.

[0045] In one embodiment, for a given UE, the variable fields in Table 2 remain unchanged during the RRC (Radio Resource Control) connection process. Furthermore, each RRC connection process corresponds to a user identifier rnti (Radio Network Temporary Identity), therefore, for a given rnti, the variable fields in Table 2 will not change. Thus, after obtaining the actual configuration of the target UE, the configuration in Table 2 can be fixed for the target UE, i.e., the variable fields can be fixed. During subsequent DCI1-1 detection of the target UE, the detection of variable fields can be reduced, thereby improving the efficiency of DCI1-1 content detection for the entire system.

[0046] S102. Based on the temporary wireless network identifier rnti corresponding to the PDCCH, query the preset configuration information database to see if there is a historical variable configuration field corresponding to the PDCCH;

[0047] In one embodiment, the historical variable configuration field includes the number of bits in the BWP configuration field, the number of bits in the frequency domain resource allocation field, and the number of bits in the antenna port field.

[0048] In one embodiment, the historical configuration fields corresponding to rnti are searched in a preset configuration information database, namely the number of bits in the BWP configuration field, the number of bits in the frequency domain resource allocation field, and the number of bits in the antenna port field.

[0049] In one embodiment, rnti is the identifier of the UE, and each UE has a unique rnti identifier.

[0050] The number of bits in the BWP configuration field: 1 bit or 2 bits. For example, when the system only configures an initial BWP, it is 1 bit.

[0051] Frequency domain resource allocation field bit count: There are two types: type 0 or dynamic. For example, type 0 has 1 bit, while type 0 has N bits. RBG , where N RBG It is the number of RB groups.

[0052] Antenna port field: It is related to the dmrs type and maxlen, and may be 4-6 bits. For example, when dmrs is type1 and maxlen is 1, the antenna port field is 4 bits.

[0053] S103. When the historical variable configuration field corresponding to the PDCCH is found in the configuration information database, the bit sequence of DCI1-1 is recombined based on the historical variable configuration field and the fixed field to obtain the candidate configuration data corresponding to DCI1-1.

[0054] 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 the variable field in the bit sequence of DCI1-1 is replaced with the historical configuration field. That is, the 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.

[0055] S104. Based on the preset verification process, the candidate configuration data is verified to obtain the configuration verification result;

[0056] In one embodiment, the preset verification process may include equalization, rate matching, LDPC (Low Density Parity Check Code) decoding, and CRC check.

[0057] Channel equalization refers to anti-fading measures taken to improve the transmission performance of communication systems in fading channels. It primarily aims to eliminate or reduce inter-symbol interference caused by multipath delay in broadband communication. Its mechanism involves compensating for the characteristics of the channel or the entire transmission system. Depending on whether the channel has constant or variable parameters and the data rate, equalization can be implemented in various structural ways, including frequency domain equalization and time domain equalization.

[0058] Rate matching refers to the retransmission or puncturing of bits on a transmission channel. The number of bits in a transmission channel can vary across different TTIs (Transmission Time Intervals, the basic time unit for dynamically scheduling resources), while the configured physical channel capacity (or the number of bits it can carry) remains fixed. Therefore, when the data bit count changes across different TTIs, some bits in the input sequence will be retransmitted or punctured to match the carrying capacity of the physical channel, ensuring that the total bit rate after multiplexing matches the configured physical channel capacity.

[0059] LDPC codes are a type of linear block code used to correct errors that occur during transmission. Their error correction capability is very close to the theoretical maximum (i.e., the Shannon limit). Block codes, also known as block codes, are a type of channel coding technique. They add extra bits to the original message sent by the transmitter, ensuring the bit rate does not exceed the channel capacity, so that the receiver can decode it with a minimum (theoretically 0) error rate. A key characteristic of block codes is their fixed code length. Generally, a block code converts a k-bit information character s into an n-bit encoded character C(s); that is, the block code length is n. LDPC decoding refers to using decoding algorithms (such as bit-flipping algorithms, belief propagation algorithms, etc.) to determine whether the channel output bits are 1 or 0, thus obtaining the correct transmitted information. Only 0s and 1s participate in the decoding process.

[0060] CRC checksum is a channel coding technique that generates a short, fixed-length checksum based on data such as network packets or computer files. It is primarily used to detect or verify errors that may occur during data transmission or storage. It utilizes the principles of division and remainders for error detection.

[0061] For example, the CRC check process includes: first, selecting a divisor (a binary bit string) to perform a division operation on the received frame during check at the receiving end; observing the number of binary bits in the selected divisor (let's say k bits), then adding k-1 "0" bits to the end of the data frame to be sent (let's say m bits); then dividing this new frame (with k-1 "0" bits added, totaling m+k-1 bits) by the aforementioned divisor using modulo-2 division; the remainder (also a binary bit string) is the CRC checksum of the frame, also known as the FCS (Frame Check Sequence). This checksum is then appended to the original data frame (m-bit data frame) to construct a new frame, which is sent to the receiving end. Finally, at the receiving end, this new frame is divided by the previously selected divisor using modulo-2 division. If there is no remainder, it indicates that the frame was transmitted without error; otherwise, an error has occurred.

[0062] S105. When the configuration verification result is that the verification is passed, the candidate configuration data is determined to be the configuration data of the PDCCH.

[0063] In one embodiment, if the CRC check of the target candidate configuration passes, then this target candidate configuration is the correct bit sequence of DCI1-1, i.e., the true configuration of PDCCH. If the check fails, it means that the target candidate configuration is not the true configuration of PDCCH, the detection ends, and the next target candidate configuration is checked.

[0064] In one embodiment, when the configuration verification result corresponding to the candidate configuration data is a verification failure, it is determined that the configuration data of the PDCCH does not exist in the bit sequence of the DCI1-1.

[0065] If the verification fails, it means that the target candidate configuration is not the real configuration of PDCCH, and the content detection of DCI1-1 ends.

[0066] This embodiment provides a content detection method for DCI1-1 based on PDCCH with historical information. The method queries the historical variable configuration field corresponding to PDCCH in the configuration information database according to the rnti corresponding to PDCCH, replaces the variable field in the DCI1-1 bit sequence, realizes the rapid determination of the bit sequence of DCI1-1, avoids the content detection and exclusion of variable fields in the DCI1-1 bit sequence, and then verifies the uniquely determined candidate configuration data to determine whether there is PDCCH configuration data in the bit sequence of DCI1-1, reducing the amount of data calculation and improving the content detection efficiency of DCI1-1.

[0067] Please refer to Figure 2 , Figure 2 This is a flowchart illustrating an implementation method of DCI1-1 content detection based on historical information provided in this application.

[0068] like Figure 2 As shown, the DCI1-1 content detection scheme provided in this embodiment includes two types. When a historical configuration field corresponding to rnti exists in the configuration information database, the historical configuration field is extracted and recombined with the fixed field in the bit sequence of DCI1-1 to form candidate configuration data for PDCCH. If a historical configuration field corresponding to rnti does not exist in the configuration information database, multiple candidate configuration data are generated by exhaustively enumerating the combinations of variable fields in DCI1-1 and combining them with the fixed field, and content detection is performed on each candidate configuration data in turn.

[0069] Please see Figure 3 , Figure 3 This is a schematic flowchart of a second embodiment of a content detection method for DCI1-1 of PDCCH based on historical information provided in this application.

[0070] like Figure 3 As shown, based on the above Figure 1 In the illustrated embodiment, after step S102, the method further includes:

[0071] S201. When the historical configuration field of rnti does not exist in the configuration information database, a candidate configuration set of PDCCH is obtained based on at least one configuration combination corresponding to the variable field and the fixed field, wherein the candidate configuration set of PDCCH includes at least one candidate configuration.

[0072] In one embodiment, when the historical configuration field corresponding to rnti does not exist in the configuration information database, the variable fields in the bit sequence of DCI1-1 cannot be determined. That is, the number of bits in the BWP configuration field, the number of bits in the frequency domain resource allocation field, and the number of antenna port fields cannot be determined, and each variable field has at least two possibilities. In this case, content detection needs to be performed on each possible combination.

[0073] Furthermore, based on the exhaustive method, the variable fields are combined to obtain a variable field combination set, wherein the variable field combination set includes at least one variable field combination; based on the combination result of each variable field combination in the variable field combination set with the fixed field, a candidate configuration set of the PDCCH is obtained.

[0074] In one embodiment, based on the bit lengths corresponding to each variable field in Table 2 above, all possible combinations are enumerated using an exhaustive method. For example, BWP configuration field (1 bit) + frequency domain resource allocation field (Type0) + antenna port field (4 bits) yields a total of 2*2*3=12 combinations.

[0075] In one embodiment, for all the variable field combinations obtained by the above exhaustive search, they are respectively recombinated with the fixed fields in the bit sequence of DCI1-1 to obtain 12 PDSCH configurations, which serve as a set of PDSCH candidate configurations, i.e., a candidate configuration set, and the size of this set is 12.

[0076] S202. Detect whether there is an undetected target candidate configuration in the candidate configuration set;

[0077] In one embodiment, when it is detected that there is no undetected target candidate configuration in the candidate configuration set, it is determined that there is no configuration data of the PDCCH in the bit sequence of DCI1-1.

[0078] In one embodiment, for a candidate configuration set, each candidate configuration is detected sequentially. If there is no undetected PDSCH configuration in the candidate configuration set, meaning that each candidate configuration in the candidate configuration set has already undergone the DCI1-1 content detection process, then there is no correct PDSCH configuration in this DCI1-1 bit sequence, and the detection ends. If there is at least one candidate configuration in the candidate configuration set that has not undergone DCI1-1 content detection, then this candidate configuration is taken as the target candidate configuration, and the subsequent process of DCI1-1 content detection is performed on the target candidate configuration.

[0079] S203. When there is an undetected target candidate configuration in the candidate configuration set, the target candidate configuration is verified based on the preset verification process to obtain the configuration verification result corresponding to the target candidate configuration.

[0080] In one embodiment, when there is at least one target candidate configuration in the candidate configuration set that has not undergone the DCI1-1 content detection process, these target candidate configurations are selected for DCI1-1 content detection.

[0081] In one embodiment, the preset verification process may include equalization, rate matching, LDPC (Low Density Parity Check Code) decoding, and CRC check.

[0082] S204. When the configuration verification result corresponding to the target candidate configuration passes, the target candidate configuration is determined to be the configuration data of the PDCCH.

[0083] In one embodiment, if the CRC check of the target candidate configuration passes, then this target candidate configuration is the correct bit sequence of DCI1-1, i.e., the true configuration of PDCCH. If the check fails, it means that the target candidate configuration is not the true configuration of PDCCH, the detection ends, and the next target candidate configuration is checked.

[0084] Furthermore, after S204, the method further includes: obtaining variable field data in the target candidate configuration; storing the rnti corresponding to the PDCCH and the variable field data in the configuration information database to obtain the historical variable configuration field corresponding to the PDCCH.

[0085] In one embodiment, after the target candidate configuration is verified, it is determined that the target candidate configuration is the configuration data of PDCCH. At this time, the variable field data in the target candidate configuration, namely the number of bits in the BWP configuration field, the number of bits in the frequency domain resource allocation field, and the number of antenna port fields, are extracted. Then, the variable field information and the rnti corresponding to PDCCH are associated and stored in the configuration information database as the historical variable configuration field corresponding to the rnti.

[0086] Please see Figure 4 , Figure 4 This is a schematic block diagram illustrating the structure of a computer device according to an embodiment of this application. The computer device may be a server.

[0087] See Figure 4 The computer device includes a processor, memory, and network interface connected via a system bus, wherein the memory may include non-volatile storage media and internal memory.

[0088] The non-volatile storage medium can store an operating system and a computer program. This computer program includes program instructions that, when executed, cause the processor to perform any content detection method of DCI1-1 based on historical information from the PDCCH.

[0089] The processor provides computing and control capabilities, supporting the operation of the entire computer device.

[0090] The internal memory provides an environment for the execution of computer programs in non-volatile storage media. When the computer program is executed by the processor, it enables the processor to execute any content detection method of DCI1-1 based on historical information PDCCH.

[0091] This network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0092] It should be understood that the processor can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among these, a general-purpose processor can be a microprocessor or any conventional processor.

[0093] In one embodiment, the processor is configured to run a computer program stored in memory to perform the following steps:

[0094] Obtain the bit sequence of downlink control information DCI1-1 in the physical downlink control channel PDCCH, wherein the bit sequence includes a variable field and a fixed field;

[0095] Based on the temporary wireless network identifier rnti corresponding to the PDCCH, query the preset configuration information database to see if the historical variable configuration field corresponding to the PDCCH exists;

[0096] When the historical variable configuration field corresponding to the PDCCH is found in the configuration information database, the bit sequence of DCI1-1 is reassembled based on the historical variable configuration field and the fixed field to obtain the candidate configuration data corresponding to DCI1-1;

[0097] Based on a preset verification process, the candidate configuration data is verified to obtain the configuration verification result;

[0098] When the configuration verification result is successful, the candidate configuration data is determined to be the configuration data of the PDCCH.

[0099] In one embodiment, the variable fields include a partial broadband (BWP) configuration field, a frequency domain resource allocation field, and an antenna port field.

[0100] In one embodiment, the historical variable configuration field includes the number of bits in the BWP configuration field, the number of bits in the frequency domain resource allocation field, and the number of bits in the antenna port field.

[0101] In one embodiment, after implementing the verification of the candidate configuration data based on the preset verification process and obtaining the configuration verification result, the processor is further configured to implement:

[0102] When the configuration verification result corresponding to the candidate configuration data is that the verification fails, it is determined that the configuration data of the PDCCH does not exist in the bit sequence of DCI1-1.

[0103] In one embodiment, after the processor performs the query to check whether the historical configuration field of the wireless network temporary identifier rnti corresponding to the PDCCH exists in the preset configuration information database, it is further configured to perform:

[0104] When the historical configuration field of rnti does not exist in the configuration information database, a candidate configuration set of PDCCH is obtained based on at least one configuration combination corresponding to the variable field and the fixed field, wherein the candidate configuration set of PDCCH includes at least one candidate configuration;

[0105] Detect whether there is an undetected target candidate configuration in the candidate configuration set;

[0106] When there is an undetected target candidate configuration in the candidate configuration set, the target candidate configuration is verified based on the preset verification process to obtain the configuration verification result corresponding to the target candidate configuration;

[0107] When the configuration verification result corresponding to the target candidate configuration passes, the target candidate configuration is determined to be the configuration data of the PDCCH.

[0108] In one embodiment, when the processor obtains the candidate configuration set of the PDCCH based on at least one configuration combination corresponding to the variable field and the fixed field, it is configured to:

[0109] Based on the exhaustive method, the variable fields are combined to obtain a variable field combination set, wherein the variable field combination set includes at least one variable field combination;

[0110] Based on the combination results of each variable field combination in the variable field combination set and the fixed field, the candidate configuration set of the PDCCH is obtained.

[0111] In one embodiment, after the processor determines that the target candidate configuration is the configuration data of the PDCCH when the configuration verification result corresponding to the target candidate configuration passes, it is further configured to implement:

[0112] Obtain the variable field data from the target candidate configuration;

[0113] The rnti and variable field data corresponding to the PDCCH are stored in the configuration information database to obtain the historical variable configuration field corresponding to the PDCCH.

[0114] In one embodiment, after implementing the detection of whether an undetected target candidate configuration exists in the candidate configuration set, the processor is further configured to implement:

[0115] When it is detected that there is no undetected target candidate configuration in the candidate configuration set, it is determined that there is no configuration data of the PDCCH in the bit sequence of DCI1-1.

[0116] The embodiments of this application also provide a computer-readable storage medium storing a computer program, the computer program including program instructions, and the processor executing the program instructions to implement any of the PDCCH DCI1-1 content detection methods based on historical information provided in the embodiments of this application.

[0117] The computer-readable storage medium may be an internal storage unit of the computer device described in the foregoing embodiments, such as the hard disk or 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, SmartMediaCard (SMC), SecureDigital (SD) card, or FlashCard equipped on the computer device.

[0118] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A content detection method for DCI1-1 based on PDCCH using historical information, characterized in that, include: Obtain the bit sequence of downlink control information DCI1-1 in the physical downlink control channel PDCCH, wherein the bit sequence includes a variable field and a fixed field; Based on the temporary wireless network identifier rnti corresponding to the PDCCH, query the preset configuration information database to see if the historical variable configuration field corresponding to the PDCCH exists; When the historical variable configuration field corresponding to the PDCCH is found in the configuration information database, the bit sequence of DCI1-1 is recombined based on the historical variable configuration field and the fixed field to obtain the candidate configuration data corresponding to DCI1-1; Based on a preset verification process, the candidate configuration data is verified to obtain the configuration verification result; When the configuration verification result is successful, the candidate configuration data is determined to be the configuration data of the PDCCH.

2. The content detection method for DCI1-1 based on historical information PDCCH according to claim 1, characterized in that, The variable fields include partial broadband BWP configuration fields, frequency domain resource allocation fields, and antenna port fields.

3. The content detection method for DCI1-1 based on historical information PDCCH according to claim 2, characterized in that, The historical variable configuration fields include the number of bits in the BWP configuration field, the number of bits in the frequency domain resource allocation field, and the number of bits in the antenna port field.

4. The content detection method for DCI1-1 based on PDCCH with historical information according to claim 1, characterized in that, After verifying the candidate configuration data based on a preset verification process and obtaining the configuration verification result, the process further includes: When the configuration verification result corresponding to the candidate configuration data is that the verification fails, it is determined that the configuration data of the PDCCH does not exist in the bit sequence of DCI1-1.

5. The content detection method for DCI1-1 based on historical information PDCCH according to claim 1, characterized in that, After querying the preset configuration information database to see if the historical configuration field of the wireless network temporary identifier rnti corresponding to the PDCCH exists, the process further includes: When the historical configuration field of rnti does not exist in the configuration information database, a candidate configuration set of PDCCH is obtained based on at least one configuration combination corresponding to the variable field and the fixed field, wherein the candidate configuration set of PDCCH includes at least one candidate configuration; Detect whether there is an undetected target candidate configuration in the candidate configuration set; When there is an undetected target candidate configuration in the candidate configuration set, the target candidate configuration is verified based on the preset verification process to obtain the configuration verification result corresponding to the target candidate configuration; When the configuration verification result corresponding to the target candidate configuration passes, the target candidate configuration is determined to be the configuration data of the PDCCH.

6. The content detection method for DCI1-1 based on historical information PDCCH according to claim 5, characterized in that, The step of obtaining the candidate configuration set for the PDCCH based on at least one configuration combination corresponding to the variable field and the fixed field includes: Based on the exhaustive method, the variable fields are combined to obtain a variable field combination set, wherein the variable field combination set includes at least one variable field combination; Based on the combination results of each variable field combination in the variable field combination set and the fixed field, the candidate configuration set of the PDCCH is obtained.

7. The content detection method for DCI1-1 based on historical information PDCCH according to claim 5, characterized in that, After determining that the target candidate configuration is the configuration data of the PDCCH when the configuration verification result corresponding to the target candidate configuration passes, the method further includes: Obtain the variable field data from the target candidate configuration; The rnti and variable field data corresponding to the PDCCH are stored in the configuration information database to obtain the historical variable configuration field corresponding to the PDCCH.

8. The content detection method for DCI1-1 based on historical information PDCCH according to claim 5, characterized in that, After detecting whether there is an undetected target candidate configuration in the candidate configuration set, the method further includes: When it is detected that there is no undetected target candidate configuration in the candidate configuration set, it is determined that there is no configuration data of the PDCCH in the bit sequence of DCI1-1.

9. A content detection device for DCI1-1 based on historical information PDCCH, characterized in that, include: The bit sequence acquisition module is used to acquire the bit sequence of downlink control information DCI1-1 in the physical downlink control channel PDCCH, wherein the bit sequence includes a variable field and a fixed field; The historical information query module is used to query whether the historical variable configuration field corresponding to the PDCCH exists in the preset configuration information database based on the wireless network temporary identifier rnti corresponding to the PDCCH. The candidate configuration acquisition module is used to reassemble the bit sequence of DCI1-1 based on the historical variable configuration field and the fixed field when the configuration information database contains the historical variable configuration field corresponding to the PDCCH, so as to obtain the candidate configuration data corresponding to the DCI1-1. The candidate configuration verification module is used to verify the candidate configuration data based on a preset verification process and obtain the configuration verification result. The configuration data determination module is used to determine the candidate configuration data as the configuration data of the PDCCH when the configuration verification result is that the verification is passed.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, causes the processor to implement the DCI1-1 content detection method of PDCCH based on historical information as described in any one of claims 1 to 7.

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