Cell service processing method, device, equipment, medium and program product

Abstract

The present invention relates to the technical field of wireless communications, and provides a cell service processing method, apparatus, device, medium and program product, the method comprising: obtaining a frequency domain data stream based on cell search synchronization and time-frequency conversion, and writing each frequency domain data symbol in the frequency domain data stream into a memory; performing physical downlink control channel blind detection based on a first frequency domain data symbol in the frequency domain data stream, and storing a plurality of pieces of obtained downlink control information in an information collection container; taking out each piece of downlink control information from the information collection container, and analyzing each piece of downlink control information; and on the basis of the analysis result of each piece of downlink control information, reading the physical downlink shared channel data from the memory, and processing the physical downlink shared channel data. According to the invention, the real-time processing of the physical downlink control channel and the non-real-time processing of the physical downlink shared channel are realized, the whole service processing flow is optimized by the processing mode, and the service processing capability is improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular, to a method, apparatus, device, medium, and program product for processing cell services. Background Art

[0002] In the current mobile communication network, cell service processing plays a crucial role. To ensure the effective transmission and reception of user data, existing terminals (such as mobile phones) usually perform blind detection of the Physical Downlink Control Channel (PDCCH) at specific times and locations to identify and process specific Radio Network Temporary Identities (RNTIs).

[0003] Specifically, the terminal performs a blind detection search on the received PDCCH at a preset time point to find the RNTI associated with it. Once the blind detection is successful, that is, the matching RNTI is found, the terminal can further extract and process the Physical Downlink Shared Channel (PDSCH) data associated with the RNTI, thereby obtaining the user's service data.

[0004] However, with the continuous increase in the number of users and the increasingly diverse communication requirements, the number of RNTIs that the system needs to process is also rising sharply. Since the existing service processing method performs blind detection at specific times, it is impossible to quickly and effectively detect all possible RNTIs in the first time, and it is difficult to meet the processing requirements of large-scale and high efficiency. Summary of the Invention

[0005] The present invention provides a method, apparatus, device, medium, and program product for processing cell services, so as to solve the defect that the existing cell service processing method cannot meet the processing requirements of large-scale RNTI detection and rapid growth of data volume.

[0006] The present invention provides a method for processing cell services, including: Based on cell search synchronization, obtain a time-domain data stream, perform time-frequency conversion on the time-domain data stream to obtain a frequency-domain data stream, and write each frequency-domain data symbol in the frequency-domain data stream into a memory. Each frequency-domain data symbol includes a first frequency-domain data symbol and a second frequency-domain data symbol. The first frequency-domain data symbol corresponds to the Physical Downlink Control Channel and is used to carry downlink control information. The second frequency-domain data symbol corresponds to the Physical Downlink Shared Channel and is used to carry service information; Perform blind detection of the physical downlink control channel based on the first frequency-domain data symbol in the frequency-domain data stream to obtain multiple pieces of downlink control information, and store the multiple pieces of downlink control information in an information collection container; Based on a preset order, take out each piece of downlink control information from the information collection container, and parse each piece of downlink control information to obtain the parsing result of each piece of downlink control information; Based on the parsing results of the respective downlink control information, read the physical downlink shared channel data from the memory and process the physical downlink shared channel data.

[0007] According to a cell service processing method provided by the present invention, the frequency-domain data stream is composed of multiple system frames, each system frame includes multiple subframes, each subframe corresponds to multiple time slots, and each time slot includes at least one first frequency-domain data symbol and multiple second frequency-domain data symbols; The writing of each frequency-domain data symbol in the frequency-domain data stream into the memory includes: Based on the system frame number, subframe number, time slot number, and symbol number corresponding to any frequency-domain data symbol, determine an offset address; Based on the cell base address and the offset address, determine the storage address corresponding to any frequency-domain data symbol; Based on the storage address, write any frequency-domain data symbol into the memory.

[0008] According to a cell service processing method provided by the present invention, the determining step of the system frame number corresponding to any frequency-domain data symbol includes: When the configured number of frames in the memory is equal to the preset number of frames, use the actual system frame number corresponding to any frequency-domain data symbol as the system frame number; When the configured number of frames in the memory is less than the preset number of frames, based on the configured number of frames and the actual system frame number corresponding to any frequency-domain data symbol, determine the system frame number corresponding to any frequency-domain data symbol.

[0009] According to a cell service processing method provided by the present invention, the taking out each piece of downlink control information from the information collection container based on a preset order and parsing each piece of downlink control information to obtain the parsing result of each piece of downlink control information includes: Within the current storage time window, sequentially take out each piece of downlink control information from the information collection container based on a preset order, and complete the parsing of each piece of downlink control information within the current storage time window to obtain the parsing result of each piece of downlink control information, where the storage time window is determined based on the configured number of frames in the memory.

[0010] A cell service processing method provided by the present invention, where writing each frequency-domain data symbol in the frequency-domain data stream into a memory includes: Writing any frequency-domain data symbol with full bandwidth into the memory; Based on the parsing results of the respective downlink control information, reading physical downlink shared channel data from the memory includes: Based on the parsing result of any downlink control information, determining the reading bandwidth; Based on the reading bandwidth, reading physical downlink shared channel data from the memory.

[0011] A cell service processing method provided by the present invention, where based on the reading bandwidth, reading physical downlink shared channel data from the memory includes: Based on the frequency-domain data symbol corresponding to any downlink control information, determining the associated system frame number, sub-frame number, and time slot number; Based on the system frame number, the sub-frame number, and the time slot number, and the number of the second frequency-domain data symbol, determining the offset address of the second frequency-domain data symbol; Based on the cell base address and the offset address of the second frequency-domain data symbol, determining the reading address corresponding to the second frequency-domain data symbol; Based on the reading bandwidth and the reading address, reading physical downlink shared channel data from the memory.

[0012] The present invention further provides a cell service processing apparatus, including: A synchronization unit, configured to obtain a time-domain data stream based on cell search synchronization, perform time-frequency conversion on the time-domain data stream to obtain a frequency-domain data stream, and write each frequency-domain data symbol in the frequency-domain data stream into a memory, where the frequency-domain data symbols include a first frequency-domain data symbol and a second frequency-domain data symbol, the first frequency-domain data symbol corresponds to a physical downlink control channel and is used to carry downlink control information, and the second frequency-domain data symbol corresponds to a physical downlink shared channel and is used to carry service information; A blind detection unit, configured to perform blind detection on a physical downlink control channel based on the first frequency-domain data symbol in the frequency-domain data stream to obtain multiple downlink control information, and store the multiple downlink control information in an information collection container; An analysis unit, configured to take out each downlink control information from the information collection container based on a preset time and a preset order, and analyze the each downlink control information to obtain the analysis results of the each downlink control information; A processing unit, configured to read physical downlink shared channel data from the memory based on the analysis results of the each downlink control information, and process the physical downlink shared channel data.

[0013] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and running on the processor. When the processor executes the computer program, the cell service processing method described in any one of the above is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the cell service processing method described in any one of the above is implemented.

[0015] The present invention also provides a computer program product, including a computer program. When the computer program is executed by a processor, the cell service processing method described in any one of the above is implemented.

[0016] For the cell service processing method, device, equipment, medium, and program product provided by the present invention, after obtaining the frequency-domain data stream through cell search synchronization and time-frequency conversion, blind detection of the physical downlink control channel can be performed in real time based on the first frequency-domain data symbol in the frequency-domain data stream. This real-time processing method can ensure that the downlink control information can be processed in a timely manner, avoiding affecting the service processing of the subsequent physical downlink shared channel due to processing delay. At the same time, by writing each frequency-domain data symbol in the frequency-domain data stream into the memory, caching of the physical downlink shared channel data can be realized first, and then according to the parsing result of the downlink control information, the physical downlink shared channel data is read from the memory and non-real-time processed. This strategy effectively balances the relationship between the system computing power and the data processing requirements, improving the utilization efficiency of the computing power. By combining the real-time processing of the physical downlink control channel and the non-real-time processing of the physical downlink shared channel, the present invention optimizes the entire service processing flow, which can not only improve the processing ability of user service data, but also better cope with the challenge of the geometric progression increase in the service data volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is one of the flow schematic diagrams of the cell service processing method provided by the present invention; Figure 2 is the time-domain distribution schematic diagram of the PDCCH and PDSCH provided by the present invention; Figure 3 is the schematic diagram of DCI collection and scheduling detected by the PDCCH provided by the present invention; Figure 4 It is a schematic flow diagram of PDSCH data processing provided by the present invention; Figure 5 It is a schematic structural diagram of multi-cell DDR writing and reading provided by the present invention; Figure 6 It is the second schematic flow diagram of the cell service processing method provided by the present invention; Figure 7 It is a schematic structural diagram of the cell service processing device provided by the present invention; Figure 8 It is a schematic structural diagram of the electronic device provided by the present invention. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0020] The Radio Network Temporary Identifier (RNTI) is a technical identifier introduced by the 4G standard to support dynamic scheduling and is also applicable in 5G NR (New Radio). RNTI is mainly divided into the following categories, and each category undertakes different functions: C-RNTI: The Radio Network Temporary Identifier of the user (terminal), and its value range is between 128 and 65533.

[0021] SI-RNTI: The Radio Network Temporary Identifier of the system information, with a fixed value of 65535.

[0022] P-RNTI: The Radio Network Temporary Identifier for paging, mainly used for paging the terminal, with a fixed value of 65534.

[0023] RA-RNTI: The Radio Network Temporary Identifier for random access (response), used for the base station to respond to the random access request of the terminal. In this signaling, multiple temporary C-RNTIs (i.e., TempC-RNTI) related to the communication user (terminal) are carried, and these TempC-RNTIs usually turn into formal C-RNTIs.

[0024] In 5G NR, the base station (BS) schedules the PDSCH (carrying system messages or service data) through the PDCCH (carrying downlink control information), and this process is called downlink scheduling. It should be noted that the PDCCH and PDSCH are in the same time slot. The 5G NR system schedules services based on time slots as the basic unit. Each time slot is divided into two parts: the first part is the PDCCH channel, which is used to carry DCI (Downlink Control Information), and one or more DCIs may be carried within a single time slot. The DCI information indicates the parameters of the second part of the PDSCH channel (such as the position of the PDSCH in the frequency-domain symbols, demodulation, and decoding information, etc.). The second part is the PDSCH channel, which is used to carry the user's service information.

[0025] Existing terminals (such as mobile phones) know the RNTIs and blind detection times that they need to perform blind detection on, so the computational complexity of blind detection is small, and the PDSCH only needs to cache the data it needs, and the amount of data is also relatively small. Therefore, most existing terminals first perform blind detection to search for specific RNTIs at specific times and positions. After successful blind detection, the corresponding PDSCH data is extracted for processing to obtain the user's service data. It should be understood that the terminal obtains the corresponding DCI information through blind detection of specific RNTIs, and then guides the reception and processing of PDSCH data.

[0026] However, the above blind detection method is a burst fixed-point mode, that is, blind detection is performed at burst times and in a known RNTI mode. This non-real-time blind detection method cannot meet the demand for blind detection and processing of a large number of unknown RNTIs because it is impossible to quickly and effectively detect all possible RNTIs in the first time. In addition, with the rapid growth of mobile communication data volume, the PDSCH data volume also shows a geometric growth trend. The existing processing methods face increasing challenges when caching and processing these data. To address this, the present invention provides a cell service processing method by combining real-time processing of the PDCCH and non-real-time processing mode of the PDSCH to overcome the above defects.

[0027] It should be noted that in a non-cooperative positioning system, the maximum number of DCIs detected by blind detection of the PDCCH control channel (there are multiple DCIs within a single time slot, and each DCI corresponds to a user) within a single time slot is 45. In a local time window, the accumulated number of DCIs is large. For example, on average, there are 10 DCIs in 1 time slot (1 slot = 500 microseconds), and there are 20,000 DCIs in 1 second. This means that 20,000 user services are being transmitted in 1 second. If a huge number of DCIs cannot be processed in real time, it will affect the subsequent PDSCH service processing. Therefore, the present invention proposes to perform real-time processing on the PDCCH blind detection.

[0028] In addition, in a non-cooperative positioning system, the PDSCH carries service information. By identifying a certain user (C-RNTI) message within a certain time window, since the user messages vary in length and the processing complexity of a single PDSCH service is higher than that of the PDCCH, considering the system computing power, in the embodiments of the present invention, the PDSCH service is first cached and then non-real-time processed within a certain time window. Thus, a dynamic window continuous frequency-domain data symbol writing is proposed, and based on the target DCI dynamic bandwidth extraction mode, the non-real-time processing of the PDSCH service is carried out. The technical solutions provided by the present invention will be introduced in detail below.

[0029] Figure 1 is one of the schematic flowcharts of the cell service processing method provided by the present invention, as Figure 1 shown, the method includes: Step 110, based on cell search synchronization, obtain a time-domain data stream, perform time-frequency conversion on the time-domain data stream to obtain a frequency-domain data stream, and write each frequency-domain data symbol in the frequency-domain data stream into a memory, where each frequency-domain data symbol includes a first frequency-domain data symbol and a second frequency-domain data symbol. The first frequency-domain data symbol corresponds to a physical downlink control channel and is used to carry downlink control information, and the second frequency-domain data symbol corresponds to a physical downlink shared channel and is used to carry service information.

[0030] It should be noted that cell search synchronization is a key process in mobile communication, which is used to determine the synchronization relationship between a user terminal and a base station and to determine the cell where the user terminal is currently located. This process usually involves detecting synchronization signals sent by the base station, such as the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS), so as to obtain information such as time synchronization and cell ID. Cell search synchronization is a prerequisite for receiving and decoding data sent by the base station.

[0031] Specifically, after cell search synchronization, a time-domain data stream can be obtained. Here, the time-domain data stream refers to a signal data sequence that changes over time. In mobile communication, these signal data are usually digital signal sequences obtained after wireless signals sent by the base station are received by an antenna, down-converted, sampled, etc. The time-domain data stream contains all the information sent by the base station, but this information may be mixed together in the time domain and is difficult to directly analyze. Therefore, after obtaining the time-domain data stream, it is necessary to perform time-frequency conversion on each time-domain data in the time-domain data stream to convert the time-domain data into frequency-domain data.

[0032] Here, time-frequency conversion refers to the process of converting a time-domain data stream from the time domain to the frequency domain. This can be achieved through mathematical tools such as the Fast Fourier Transform (FFT). The purpose of time-frequency conversion is to separate different frequency components that are mixed together in the time domain, so that the signal can be further processed and analyzed in the frequency domain.

[0033] A frequency-domain data stream refers to the signal data sequence obtained after time-frequency conversion and represented in the frequency domain. Each data point in the frequency-domain data stream corresponds to a specific frequency component, so it is easier to identify and process different signal components.

[0034] It should be understood that time-domain OFDM (Orthogonal Frequency Division Multiplexing) symbols are the basic units that make up the time-domain data stream. Through time-frequency conversion of the time-domain data stream, the resulting frequency-domain data stream also includes multiple frequency-domain data symbols. Here, a frequency-domain data symbol refers to the basic unit in the frequency-domain data stream, which represents the amplitude and phase information of the signal at a specific frequency. These frequency-domain data symbols are the basis for subsequent decoding and processing.

[0035] It can be understood that the 5G NR system schedules services in time slots as the basic unit. A time slot includes two parts, the first part is the PDCCH channel, and the second part is the PDSCH channel. Therefore, the frequency-domain data symbols in the frequency-domain data stream can be divided into two categories, namely the first frequency-domain data symbols and the second frequency-domain data symbols, which correspond to the PDCCH and PDSCH respectively. Among them, the PDCCH is used to carry downlink control information such as scheduling information and power control commands; while the PDSCH is used to carry service information such as user data and voice signals. These two types of frequency-domain data symbols have different uses and importance in subsequent processing.

[0036] Furthermore, after the frequency-domain data stream is converted, the frequency-domain data symbols in the frequency-domain data stream can be written into a memory to cache the PDSCH data, so that the corresponding PDSCH data can be read from the memory for processing later, thereby realizing the non-real-time processing of the PDSCH service. It should be understood that the above-mentioned memory can be a DDR (Double Data Rate SDRAM, Double Rate Synchronous Dynamic Random Access Memory). After cell search synchronization and FFT time-frequency conversion, continuous frequency-domain data symbols can be stored in the DDR. These frequency-domain data symbols are stored in blocks, and one storage block stores one frequency-domain data symbol. These frequency-domain data symbols are written into the memory according to a specific format and address to ensure that these data can be correctly read and processed later.

[0037] Step 120: Based on the first frequency-domain data symbol in the frequency-domain data stream, perform blind detection of the physical downlink control channel to obtain multiple pieces of downlink control information, and store the multiple pieces of downlink control information in an information collection container.

[0038] Specifically, after obtaining the frequency-domain data stream through time-frequency conversion, PDCCH blind detection can be performed in real time according to the first frequency-domain data symbol in the frequency-domain data stream. Here, PDCCH blind detection means that without knowing at which specific moment or position the PDCCH will be sent, the receiving end (such as a user terminal or a third-party device, etc.) attempts to decode all possible PDCCH candidate positions to find out the position and content where the PDCCH is actually sent.

[0039] Specifically, in the frequency-domain data stream, the first frequency-domain data symbol corresponds to the frequency-domain resource where the PDCCH is located. The receiving end will perform decoding attempts on all possible PDCCH candidates according to the predetermined PDCCH search space and the format of the PDCCH (such as aggregation level, DCI size, etc.). If the decoding is successful (i.e., the CRC check passes), it is considered that a valid PDCCH has been found, that is, the corresponding downlink control information (DCI) is obtained. Here, the downlink control information refers to the control information sent to the receiving end through the PDCCH, which contains scheduling information about downlink data transmission (such as PDSCH), power control commands, etc.

[0040] Once a valid DCI is found through PDCCH blind detection, the receiving end will store it in a special data structure, which is called an information collection container. The information collection container is used to temporarily store all received DCIs for subsequent processing and analysis. Here, the information collection container refers to a data structure for storing and managing the received downlink control information, which can be a queue, an array, or a hash table in memory, etc., for quickly accessing and retrieving the stored information.

[0041] Step 130: Based on a preset order, take out each piece of downlink control information from the information collection container, and parse each piece of downlink control information to obtain the parsing results of each piece of downlink control information.

[0042] Specifically, the receiving end will take out each DCI from the information collection container in sequence according to a preset order (such as time order, etc.) to parse each DCI. Here, taking out DCIs based on a preset order can ensure that the system can process the received information according to a predetermined logic and process, thus avoiding confusion and errors in information processing.

[0043] DCI parsing refers to decoding DCI into readable information or instructions according to its format and definition. This usually involves decoding and verifying each field of DCI to ensure that the received information is accurate and complete. The parsed DCI information can be used to guide subsequent data reception and processing.

[0044] The parsing result of DCI refers to the information or instructions obtained after decoding and verifying DCI. These information or instructions usually include scheduling information of downlink data (such as PDSCH), power control commands, etc., which are crucial for the receiving end to correctly receive and process downlink data.

[0045] Step 140, based on the parsing results of the respective downlink control information, read the physical downlink shared channel data from the memory and process the physical downlink shared channel data.

[0046] Specifically, according to the parsing result of each DCI, the receiving end can determine information such as the position of PDSCH in the time domain and frequency domain and the modulation and coding mode. Then, the receiving end will read the corresponding PDSCH data from the memory (such as DDR) according to this information.

[0047] After each PDSCH data is read, the PDSCH data can be processed to obtain the user's service data. Here, the processing of PDSCH data usually includes steps such as demodulation, decoding, and verification. Specifically, the receiving end will demodulate the PDSCH data according to the information such as the modulation and coding mode provided in the DCI and convert it into a baseband signal. Then, the receiving end will decode the demodulated data to recover the original service data. Finally, the receiving end will also verify the decoded data to ensure the accuracy and integrity of the data.

[0048] In the method provided by the embodiments of the present invention, after obtaining the frequency-domain data stream through cell search synchronization and time-frequency conversion, blind detection of the physical downlink control channel can be performed in real time based on the first frequency-domain data symbol in the frequency-domain data stream. This real-time processing method can ensure that the downlink control information can be processed in a timely manner and avoid affecting the subsequent service processing of the physical downlink shared channel due to processing delay. At the same time, by writing each frequency-domain data symbol in the frequency-domain data stream into the memory, it is possible to first cache the physical downlink shared channel data, and then read the physical downlink shared channel data from the memory and perform non-real-time processing according to the parsing results of the downlink control information. This strategy effectively balances the relationship between system computing power and data processing requirements and improves the utilization efficiency of computing power. By combining the real-time processing of the physical downlink control channel and the non-real-time processing of the physical downlink shared channel, the present invention optimizes the entire service processing flow, which can not only improve the processing ability of user service data but also better cope with the challenge of the geometric progression increase in service data volume.

[0049] Based on the above embodiments, the frequency-domain data stream is composed of multiple system frames, each system frame includes multiple sub-frames, each sub-frame corresponds to multiple time slots, and each time slot includes at least one first frequency-domain data symbol and multiple second frequency-domain data symbols.

[0050] It should be noted that the time-domain data stream is composed of multiple system frames, each system frame includes multiple sub-frames, each sub-frame corresponds to multiple time slots, and each time slot includes multiple OFDM symbols. After time-frequency conversion, each OFDM symbol corresponds to a frequency-domain data symbol. Therefore, the frequency-domain data stream is also composed of multiple system frames, each system frame includes multiple sub-frames, each sub-frame corresponds to multiple time slots, and each time slot includes multiple frequency-domain data symbols. Here, a system frame refers to the basic time unit for transmitting data and control information. A sub-frame is a division of a system frame, which further divides the time of the system frame into smaller units to more flexibly organize data transmission. A time slot is a smaller time unit of a sub-frame, which is used to allocate to users or channels for data transmission.

[0051] Figure 2 is a schematic diagram of the time-domain distribution of PDCCH and PDSCH provided by the present invention. As Figure 2 shown, after cell search synchronization, the Figure 2 time-domain data stream shown can be obtained. A complete radio frame includes system frames 0 to 1023, and these system frames are periodically repeated, but the information carried by each system frame is different. Figure 2 Taking system frame 0 as an example for display, each system frame includes 10 sub-frames (i.e., sub-frames 0 to 9), each sub-frame corresponds to 2 time slots, and each time slot includes 14 symbols (i.e., symbols 0 to 13). Among them, in 5G NR, the PDCCH blind detection time-domain search space is usually the first 1 to 3 symbols of a time slot, and the specific number can be configured according to requirements, generally the first two symbols of a time slot, that is, symbol 0 and symbol 1 of each time slot. The PDCCH channel within a time slot carries 1 or more (up to 45) DCIs; within a time slot, except for the symbols corresponding to PDCCH, the remaining symbols correspond to PDSCH, which is used to carry one or more service messages.

[0052] For example, if the PDCCH occupies 1 symbol (i.e., symbol 0), then the PDSCH occupies 13 symbols (i.e., symbols 1 to 13); if the PDCCH occupies 2 symbols (i.e., symbol 0 and symbol 1), then the PDSCH occupies 12 symbols (i.e., symbols 2 to 13); if the PDCCH occupies 3 symbols (i.e., symbols 0 to 2), then the PDSCH occupies 11 symbols (i.e., symbols 3 to 13).

[0053] Based on any of the above embodiments, in step 110, writing each frequency-domain data symbol in the frequency-domain data stream into the memory includes: Step 111, determining an offset address based on the system frame number, sub-frame number, time slot number, and symbol number corresponding to any frequency-domain data symbol; Step 112, determining the storage address corresponding to any frequency-domain data symbol based on the cell base address and the offset address; Step 113, writing any frequency-domain data symbol into the memory based on the storage address.

[0054] It should be noted that in a wireless communication system, time is divided into a series of consecutive system frames, each of which has a unique number for identifying its position in time. Each system frame is usually further divided into multiple sub-frames, each of which also has a unique number. A sub-frame can be further divided into time slots, each of which also has a number. Within a time slot, data is transmitted in the form of symbols, and each symbol also has a number.

[0055] Specifically, when storing each frequency-domain data symbol in the DDR, it is necessary to first determine its corresponding storage address, which is jointly determined by the cell base address and the offset address. Here, the cell base address is a fixed starting address used to identify the starting position of a specific cell in the memory. This address is preset and unique for each cell. The offset address is a relative address calculated based on information such as the system frame number, sub-frame number, time slot number, and symbol number corresponding to each symbol, used to indicate the relative position of the frequency-domain data symbol in the memory, and this address is relative to a reference point (such as the cell base address).

[0056] After calculating the offset address, based on the cell base address and the offset address, the storage address of the frequency-domain data symbol in the memory can be determined. This usually involves adding (or other forms of combined operations) the cell base address and the offset address to obtain the final storage address.

[0057] After determining the storage address, the specific position of the frequency-domain data symbol in the DDR memory can be calculated. Subsequently, through the interface of the DDR memory (such as the DDR controller), a write operation is performed to write the frequency-domain data symbol into the calculated storage address. This process is usually jointly completed by hardware (such as the DDR controller) and software (such as the driver or firmware). The hardware is responsible for providing the necessary interfaces and timing control, while the software is responsible for address calculation and data preparation, etc.

[0058] Based on any of the above embodiments, in step 111, the steps for determining the system frame number corresponding to any frequency-domain data symbol include: When the configured number of frames in the memory is equal to the preset number of frames, use the actual system frame number corresponding to any one of the frequency-domain data symbols as the system frame number; When the configured number of frames in the memory is less than the preset number of frames, determine the system frame number corresponding to any one of the frequency-domain data symbols based on the configured number of frames and the actual system frame number corresponding to any one of the frequency-domain data symbols.

[0059] It should be noted that the configured number of frames in the memory refers to the number of system frames that can be stored in the pre-configured memory. For example, the configured number of frames can be 1024 or 64, etc. The preset number of frames refers to the pre-set system frame number threshold, which is usually 1024 (i.e., the number of a complete radio frame).

[0060] Specifically, the number of system frames stored in the DDR can be custom-configured. For example, if 1024 is configured, then a complete radio frame is stored. In this case, the actual system frame number corresponding to each frequency-domain data symbol can be directly used as the system frame number for storage address calculation. If 64 system frames are configured to be stored, the escaped system frame numbers 0 to 63 need to be stored. The escape calculation formula is: MOD(actual system frame number, configured number of frames), where MOD is the modulo calculation. For example, if the configured number of stored frames is 64 and the current actual system frame number is 67, then the stored escaped frame number (i.e., the system frame number) is MOD(67, 64) = 3. If the current actual system frame number is 2, then the stored escaped frame number is MOD(2, 64) = 2.

[0061] Based on any of the above embodiments, step 130 specifically includes: Within the current storage time window, sequentially extract each downlink control information from the information collection container based on a preset order, and complete the parsing of each downlink control information within the current storage time window to obtain the parsing results of each downlink control information, where the storage time window is determined based on the configured number of frames in the memory.

[0062] It should be noted that for the consistency of operations, all frequency-domain data symbols within the DDR temporary storage time slot are used to address and periodically store the air interface frames according to the escaped system frame number, and the storage time window is the number of system frames stored in the configured DDR storage system.

[0063] Figure 3 It is a schematic diagram of DCI collection and scheduling for PDCCH detection provided by the present invention, as Figure 3As shown in the figure, taking the configuration storage of 64 system frames as an example (one system frame is 10 milliseconds, so the storage time window is 640 milliseconds): Try to schedule and process all the DCI within the storage time window. It is necessary to process all the DCI within the time window before the periodic storage overwrite. For example, within the first storage time window, DCIn groups are detected in system frames 0 to 63. These DCI messages will be stored in the DCI collection container (this container follows the first-in-first-out principle). Before the arrival of the second escape storage system frame 63 (i.e., the second storage time window), it is necessary to process this DCIn group. Otherwise, the data stored in the container will be overwritten.

[0064] It can be understood that when writing the DCI information obtained by each PDCCH blind detection into the collection container, the DCI information, as well as the actual system frame number, sub-frame number, time slot number, etc. where the DCI is located, can all be written into the container. Subsequently, in the first-in-first-out order, each group of DCI information is taken out from the DCI collection container in turn for parsing. The DCI parameters obtained by parsing will also be put into a secondary container (this container also follows the first-in-first-out principle), so that when scheduling DCI, the corresponding DCI parameters and the accompanying system frame number, sub-frame number, time slot number, Rbshift offset (i.e., bit rate offset), etc. are taken out from this container to read PDSCH data from the DDR.

[0065] It should be understood that the above-mentioned accompanying system frame number, sub-frame number, time slot number, and Rbshift offset and other information are obtained according to DCI parsing. Within each time slot, the system frame numbers, sub-frame numbers, and time slot numbers corresponding to the first frequency-domain data symbols (such as symbol 0 and symbol 1) and the second frequency-domain data symbols (such as symbols 2 to 13) are the same. Therefore, according to the system frame number, sub-frame number, and time slot number obtained by DCI parsing, it is possible to determine the system frame number, sub-frame number, and time slot number corresponding to each second frequency-domain data symbol (such as symbols 2 to 13) within this time slot. Thus, the offset address can be determined according to the system frame number, sub-frame number, time slot number, symbol number, and Rbshift offset corresponding to each second frequency-domain data symbol, so as to determine the read address for reading PDSCH data from the DDR according to this offset address and the cell base address.

[0066] Based on any of the above embodiments, in step 110, writing each frequency-domain data symbol in the frequency-domain data stream into the memory includes: Writing any frequency-domain data symbol with the full bandwidth into the memory; Correspondingly, in step 140, reading physical downlink shared channel data from the memory based on the parsing results of the respective downlink control information includes: Step 141, determining the read bandwidth based on the parsing result of any downlink control information; Step 142, read the physical downlink shared channel data from the memory based on the read bandwidth.

[0067] Specifically, the embodiment of the present invention proposes a strategy of writing frequency-domain data symbols with the full bandwidth into the DDR and reading the DDR based on the DCI bandwidth. For example, the full bandwidth of a single symbol occupies 273 RBs (resource blocks, 1 RB = 12 REs, and RE is the sub-carrier of the NR OFDM system, i.e., the smallest resource element). Assuming that the PDSCH occupied bandwidth after DCI parsing is 2 RBs, then the read bandwidth is 2 RBs. If the PDCCH bandwidth is configured as the first two symbols 0-1 within a time slot (1 slot = 14 symbols), and the PDSCH occupies symbols 2-13, then the DDR write is 273 RB @ symbols 2-13, and the DDR read is 2 RB @ symbols 2-13.

[0068] It can be understood that writing with the full bandwidth means that each symbol writes data into the DDR according to the entire bandwidth (273 RBs). The DDR read based on the DCI bandwidth means that the bandwidth for reading data is determined according to the bandwidth of the PDSCH obtained after DCI parsing. Since the bandwidth indicated by the PDSCH occupied after DCI parsing is 2 RBs, although the data is written into the DDR with the full bandwidth (273 RBs), only 2 RB of data is read during the read operation.

[0069] In the embodiment of the present invention, even if the data is initially stored in the form of the full bandwidth, the read bandwidth of the data is dynamically adjusted by the DCI, which improves the flexibility and efficiency of the system because it allows optimizing data transmission according to the current network conditions and user requirements.

[0070] Figure 4 It is a schematic flow diagram of PDSCH data processing provided by the present invention. As Figure 4 shown, when writing the frequency-domain data symbols with the full bandwidth into the DDR, a Ping Pang selection (or ping-pong operation) strategy can be adopted to achieve this. Here, the ping-pong operation is a common technique in computer science and hardware design, especially when dealing with data streams and cache management. It usually involves two or more cache or storage areas, and data is alternately written and read between these areas to achieve continuous data processing and efficient utilization. In the DDR write scenario, the ping-pong operation means that the full-bandwidth frequency-domain data symbols A and B are alternately written into different areas or addresses of the DDR to achieve continuous data storage and fast access.

[0071] Subsequently, according to the DCI parsing and DCI scheduling, determine the DDR read command based on the DCI bandwidth (i.e., Figure 4the DDR read command shown in , and then according to this command, read the corresponding PDSCH frequency-domain data from the DDC memory and cache this data. Here, caching means temporarily storing the data in a memory that can be accessed quickly for subsequent processing. By caching the PDSCH frequency-domain data, it can be ensured that the data can be accessed efficiently in subsequent processing steps, and at the same time, different parts in the processing pipeline are allowed to work in parallel.

[0072] Next, technologies such as channel estimation, equalization, and LDPC (Low-Density Parity-Check) decoding are used to process the cached PDSCH frequency-domain data to obtain the user's service data. Here, channel estimation means using known signals (such as reference signals or pilot signals) to estimate the characteristics of the wireless channel (such as amplitude, phase, and delay). This is because during wireless transmission, the signal is affected by various factors (such as multipath propagation, attenuation, and interference), resulting in signal distortion. Through channel estimation, the system can understand these distortions and accordingly adjust the received signal to improve the signal quality.

[0073] It can be understood that equalization is a signal processing technology used to compensate for channel distortion. It usually adjusts the received signal based on the results of channel estimation to restore the originally transmitted signal. In the embodiments of the present invention, equalization may involve applying one or more algorithms to the PDSCH frequency-domain data to reduce or eliminate the distortion caused by the channel. LDPC is a linear block code used for error detection and correction. It works by adding redundant information (i.e., check bits) to the transmitted data, and these check bits allow the receiving end to detect and correct errors after receiving the data. LDPC decoding is performed on the PDSCH data after channel estimation and equalization processing to recover the original user service data.

[0074] Based on any of the above embodiments, step 142 specifically includes: Step 1421, determine the associated system frame number, subframe number, and time slot number based on the frequency-domain data symbol corresponding to the any downlink control information; Step 1422, determine the offset address of the second frequency-domain data symbol based on the system frame number, the subframe number, the time slot number, and the number of the second frequency-domain data symbol; Step 1423, determine the read address corresponding to the second frequency-domain data symbol based on the cell base address and the offset address of the second frequency-domain data symbol; Step 1424, read the physical downlink shared channel data from the memory based on the read bandwidth and the read address.

[0075] It should be noted that when reading the corresponding PDSCH data from the DDR, it is first necessary to determine the corresponding read address. Similarly, the read address can be determined by the cell base address and the calculated offset address.

[0076] Specifically, within each time slot, since the system frame numbers, sub-frame numbers, and time slot numbers corresponding to the first frequency-domain data symbols (such as symbol 0 and symbol 1) and the second frequency-domain data symbols (such as symbols 2 to 13) are the same, therefore, according to the DCI information parsed from the DCI, the system frame number, sub-frame number, and time slot number corresponding to the DCI information can be determined, and then the system frame number, sub-frame number, and time slot number corresponding to each second frequency-domain data symbol (such as symbols 2 to 13) within this time slot can be determined. Thus, the offset address can be determined based on the system frame number, sub-frame number, time slot number, symbol number, and Rbshift offset corresponding to each second frequency-domain data symbol, so as to determine the read address for reading the PDSCH data from the DDR based on this offset address and the cell base address.

[0077] Figure 5 is a schematic structural diagram of multi-cell DDR writing and reading provided by the present invention, as Figure 5 shown. PCI0 to PCI2 in the figure are cell numbers. The multi-channel read-write polling arbitration is an arbitration mechanism for processing multiple read-write requests. In this mechanism, the system will process the read-write requests from different sources or with different functions in sequence according to certain rules and algorithms. For example, the arbitration mechanism is designed to process 4-way read-write requests, namely 1-way downlink write, 1-way downlink read, 1-way uplink write, and 1-way uplink read.

[0078] In the scenario of multi-cells, first, the base address division for DDR reading and writing is performed for each cell. Assume that the DDR chip (i.e., the DDR memory) has a storage space of 4GB, and its address bit width is 30bit (i.e., the width of the address lines used is 30 bits, which determines the memory space size it can address. 30 address lines can address 2 30 (i.e., approximately 1GB) different memory locations), and the 30bit address addressing data bit width is 32bit, that is, one address addresses 4 bytes (the data bit width corresponding to each memory address is 32 bits).

[0079] For the convenience of addressing, the smallest storage unit for downlink 4RX is designed as a 64KB block (the smallest storage unit for uplink 2RX is a 32KB block). Here, downlink 4RX means that the device (or terminal) has 4 receiving antennas or channels in the downlink direction. For each frequency-domain data symbol within a time slot, the calculation formula for the storage unit it occupies is: , since the size of the storage unit is usually designed as a power of 2, therefore, the storage unit for downlink 4RX is designed as a 64KB block.

[0080] Since 1 system frame = 10 sub - frames = 20 time slots = 280 symbols, therefore, one system frame requires storage space, and 64 system frames require storage space. The storage of each cell is allocated according to the 64 - system - frame space. The total storage space of the three downlink cells (i.e., PCI0 - PCI2) is: . The remaining 4GB - 3.2813GB = 0.7187GB is allocated to the uplink cells (i.e., RNTIx).

[0081] There are only 2 RXs for the uplink frequency - domain data symbols. The DDR space occupied by a single symbol is halved. A single uplink symbol occupies 32KB of unit storage, and the same 64 - system - frame space is stored. , and the allocated space meets the design requirements.

[0082] Another design solution is provided in the embodiment of the present invention: the space occupied by a single symbol remains unchanged, still 64KB, and 32 system - frame spaces are stored. The allocated space of 0.7187GB can also meet the requirements. In this way, it is consistent with the downlink addressing address mapping, and to a certain extent, the design complexity is reduced.

[0083] The APP interface data bit - width of the DDR chip is 256bit (that is, each time data is read from or written to the DDR memory, 256 - bit (i.e., 32 - byte) data can be processed), the address bit - width is 30bit, and the 30 - bit address addressing data bit - width is 32bit, that is, one address addresses 4 bytes. Since the interface data bit - width is 256bit, that is, the lowest 3 bits of the 30 - bit address are always 0, and the 30 - bit address accumulates by 8 for addressing. It should be understood that since the APP data bit - width is 256 bits, this means that 32 bytes can be transferred each time of access (256 bits / 8 bits = 32 bytes). Since each address corresponds to 4 bytes, each access will span 8 consecutive memory addresses (32 bytes / 4 bytes = 8). Since 256 bits (32 bytes) is a multiple of 2 8 , the lowest 3 bits of the 30 - bit address (i.e., 2 0 , 2 1 , 2 2 ) are unchanged when determining the starting address of these 32 bytes, so these 3 bits can be regarded as always 0. And the 30 - bit address accumulating by 8 for addressing means that after each 256 - bit (32 - byte) data access, the address will increment by 8 (because each access spans 8 addresses, and each address is 4 bytes). In other words, after each complete 256 - bit data read - write operation, the address will be automatically incremented by 8 (in the 30 - bit address space) so that the next access is to the next 32 - byte data block.

[0084] Based on the above memory space allocation and design, in the 30-bit (i.e., [29:0]) addressing, the 30-bit DDR base addresses are divided as follows: The base address of PCI0 in the DDR memory is 0x0000_0000 (downward), the base address of PCI1 in the DDR memory is 0x1180_0000 (downward), the base address of PCI2 in the DDR memory is 0x2300_0000, and the base address of RNTIx in the DDR is 0x3480_0000 (upward).

[0085] The offset address is used to address 256-bit data. The lower 3 bits of the offset address are always 0, and the address is incremented by 8 in a single operation. The following is an explanation of the calculation process of the offset address for DDR read and write.

[0086] The system frame number ranges from 0 to 63, occupying 6 bits, with 280 symbols. The ARM processor scheduling needs to clearly map the escape frame numbers 0 to 63 in the local time to the actual frame numbers 0 to 1023. The sub-frame number ranges from 0 to 9, occupying 4 bits, with 28 symbols. The time slot number ranges from 0 to 1, occupying 1 bit, with 14 symbols. The symbol number ranges from 0 to 13, occupying 4 bits. The RE internal number ranges from 0 to 3275, occupying 12 bits.

[0087] For the calculation of the downward offset address, since each symbol occupies a 64KB block, the configured number of system frames stored is 64, one system frame includes 10 sub-frames, one sub-frame includes 2 time slots, and each time slot includes 14 symbols. Therefore, a total of storage units of 64KB blocks are required. Converting a single 64KB block to the 30-bit DDR APP address is , and finally, the formula for calculating the 30-bit offset address can be obtained as follows: Downward offset address calculation formula = (system frame number 280 + sub-frame number 28 + time slot number 14 + symbol number) 16384 + RBshift 48.

[0088] For example, for system frame 1, sub-frame 0, time slot 0, symbol 1, and RBshift = 0, the offset address is: .

[0089] Another example, for system frame 63, sub-frame 9, time slot 1, symbol 13, and RBshift = 10, the offset address is: .

[0090] Based on any of the above embodiments, Figure 6 is the second schematic flow diagram of the cell service processing method provided by the present invention, as shown in Figure 6As shown, the method includes: Step S1, after SSB cell search synchronization, obtain the OFDM symbol timing boundary (symbol start and end) and the corresponding system frame number, subframe number, time slot number, symbol number, etc. After synchronization, follow the steps below: Figure 2 Here, SSB (Synchronization Signal Block) synchronization refers to a key technology in the 5G NR network, which is mainly used to achieve synchronization between user equipment (i.e., terminal) and base station. SSB is a key signal block in the 5G NR network. It includes two parts: synchronization signal and broadcast signal. The synchronization signal includes PSS and SSS, and the broadcast signal includes PBCH (Physical Broadcast Channel) data and DMRS (Demodulation Reference Signal).

[0091] Step S2, after FFT time-frequency conversion, the full bandwidth of the continuous frequency domain data symbols is stored in DDR, and the frequency domain data symbols are stored as blocks. One storage block stores one frequency domain data symbol, and the storage address of DDR is addressed by [system frame number, subframe number, time slot number, symbol number].

[0092] Step S3, performing PDCCH blind detection based on the frequency domain data symbols after FFT time-frequency conversion, and placing the DCI information output by the blind detection into a collection container.

[0093] Step S4, in a first-in-first-out order, takes out the DCI information from the container and performs DCI parsing, performs DCI scheduling according to the parsing result, determines the reading bandwidth of DCI parsing, reads PDSCH data from DDR according to the DCI parsing parameters and the reading bandwidth, and performs subsequent processing on it to obtain the user's service data.

[0094] The method provided by the embodiment of the present invention performs real-time processing on PDCCH blind detection, writes continuous frequency domain data symbols into DDR within a dynamic window, reads PDSCH data based on the target DCI dynamic bandwidth, and performs non-real-time processing of PDSCH services, thereby realizing the combination of PDCCH real-time processing and PDSCH non-real-time processing modes, and supports multiple cells.

[0095] The cell service processing device provided by the present invention is described below. The cell service processing device described below and the cell service processing method described above can be referenced to each other.

[0096] Based on any of the above embodiments, Figure 7 Schematic diagram of the structure of the cell service processing device provided by the present invention.Figure 7 As shown in the figure, the device includes: A synchronization unit 710, configured to obtain a time-domain data stream based on cell search synchronization, perform time-frequency conversion on the time-domain data stream to obtain a frequency-domain data stream, and write each frequency-domain data symbol in the frequency-domain data stream into a memory. Each frequency-domain data symbol includes a first frequency-domain data symbol and a second frequency-domain data symbol. The first frequency-domain data symbol corresponds to a physical downlink control channel and is used to carry downlink control information. The second frequency-domain data symbol corresponds to a physical downlink shared channel and is used to carry service information; A blind detection unit 720, configured to perform blind detection on a physical downlink control channel based on the first frequency-domain data symbol in the frequency-domain data stream to obtain a plurality of downlink control information, and store the plurality of downlink control information in an information collection container; An analysis unit 730, configured to take out each downlink control information from the information collection container based on a preset time and a preset order, and analyze each downlink control information to obtain an analysis result of each downlink control information; A processing unit 740, configured to read physical downlink shared channel data from the memory based on the analysis result of each downlink control information, and process the physical downlink shared channel data.

[0097] The device provided by the embodiment of the present invention can, after obtaining a frequency-domain data stream through cell search synchronization and time-frequency conversion, perform blind detection on a physical downlink control channel in real time based on the first frequency-domain data symbol in the frequency-domain data stream. This real-time processing method can ensure that downlink control information can be processed in a timely manner, avoiding affecting the subsequent service processing of the physical downlink shared channel due to processing delay. At the same time, by writing each frequency-domain data symbol in the frequency-domain data stream into a memory, it is possible to first cache the physical downlink shared channel data, and then read the physical downlink shared channel data from the memory and perform non-real-time processing according to the analysis result of the downlink control information. This strategy effectively balances the relationship between system computing power and data processing requirements, and improves the utilization efficiency of computing power. The present invention combines the real-time processing of the physical downlink control channel and the non-real-time processing of the physical downlink shared channel, optimizes the entire service processing flow, not only can improve the processing ability of user service data, but also can better cope with the challenge of the geometric progression increase in service data volume.

[0098] Based on any of the above embodiments, the frequency-domain data stream is composed of a plurality of system frames, each system frame includes a plurality of sub-frames, each sub-frame corresponds to a plurality of time slots, and each time slot includes at least one first frequency-domain data symbol and a plurality of second frequency-domain data symbols; Correspondingly, the synchronization unit 710 includes a data writing sub-unit, and the data writing sub-unit is configured to: Determine an offset address based on the system frame number, subframe number, time slot number, and symbol number corresponding to any frequency-domain data symbol; Determine the storage address corresponding to any frequency-domain data symbol based on the cell base address and the offset address; Write any frequency-domain data symbol into the memory based on the storage address.

[0099] Based on any of the above embodiments, the data writing subunit is specifically configured to: When the number of configured frames in the memory is equal to the preset number of frames, use the actual system frame number corresponding to any frequency-domain data symbol as the system frame number; When the number of configured frames in the memory is less than the preset number of frames, determine the system frame number corresponding to any frequency-domain data symbol based on the number of configured frames and the actual system frame number corresponding to any frequency-domain data symbol.

[0100] Based on any of the above embodiments, the parsing unit 730 is specifically configured to: Within the current storage time window, sequentially take out each downlink control information from the information collection container in a preset order, and complete the parsing of each downlink control information within the current storage time window to obtain the parsing results of each downlink control information, where the storage time window is determined based on the number of configured frames in the memory.

[0101] Based on any of the above embodiments, the data writing subunit is configured to: Write any frequency-domain data symbol with full bandwidth into the memory; Correspondingly, the processing unit 740 includes a data reading subunit, and the data reading subunit is configured to: Determine the reading bandwidth based on the parsing result of any downlink control information; Read the physical downlink shared channel data from the memory based on the reading bandwidth.

[0102] Based on any of the above embodiments, the data reading subunit is specifically configured to: Determine the associated system frame number, subframe number, and time slot number based on the frequency-domain data symbol corresponding to any downlink control information; Determine the offset address of the second frequency-domain data symbol based on the system frame number, the subframe number, the time slot number, and the number of the second frequency-domain data symbol; Determine the reading address corresponding to the second frequency-domain data symbol based on the cell base address and the offset address of the second frequency-domain data symbol; Read the physical downlink shared channel data from the memory based on the reading bandwidth and the reading address.

[0103] Figure 8 Illustrates a schematic diagram of the physical structure of an electronic device, as Figure 8 shown. The electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840. Among them, the processor 810, the communication interface 820, and the memory 830 complete communication with each other through the communication bus 840. The processor 810 may call the logical instructions in the memory 830 to execute the cell service processing method, which includes: obtaining a time-domain data stream based on cell search synchronization, performing time-frequency conversion on the time-domain data stream to obtain a frequency-domain data stream, and writing each frequency-domain data symbol in the frequency-domain data stream into the memory. Each of the frequency-domain data symbols includes a first frequency-domain data symbol and a second frequency-domain data symbol. The first frequency-domain data symbol corresponds to a physical downlink control channel and is used to carry downlink control information. The second frequency-domain data symbol corresponds to a physical downlink shared channel and is used to carry service information; performing blind detection of the physical downlink control channel based on the first frequency-domain data symbol in the frequency-domain data stream to obtain a plurality of downlink control information, and storing the plurality of downlink control information in an information collection container; taking out each downlink control information from the information collection container based on a preset order, and parsing each downlink control information to obtain the parsing result of each downlink control information; reading physical downlink shared channel data from the memory based on the parsing result of each downlink control information, and processing the physical downlink shared channel data.

[0104] In addition, when the logical instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the related technology, or a part of this technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: various media such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc that can store program codes.

[0105] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the cell service processing method provided by each of the above methods. The method includes: based on cell search synchronization, obtaining a time-domain data stream, performing time-frequency conversion on the time-domain data stream to obtain a frequency-domain data stream, and writing each frequency-domain data symbol in the frequency-domain data stream into a memory. Each of the frequency-domain data symbols includes a first frequency-domain data symbol and a second frequency-domain data symbol. The first frequency-domain data symbol corresponds to a physical downlink control channel and is used to carry downlink control information. The second frequency-domain data symbol corresponds to a physical downlink shared channel and is used to carry service information; performing blind detection of the physical downlink control channel based on the first frequency-domain data symbol in the frequency-domain data stream to obtain a plurality of downlink control information, and storing the plurality of downlink control information in an information collection container; taking out each downlink control information from the information collection container based on a preset order, and parsing each downlink control information to obtain an analysis result of each downlink control information; based on the analysis results of each downlink control information, reading physical downlink shared channel data from the memory and processing the physical downlink shared channel data.

[0106] In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is configured to execute the cell service processing method provided by each of the above methods. The method includes: based on cell search synchronization, obtaining a time-domain data stream, performing time-frequency conversion on the time-domain data stream to obtain a frequency-domain data stream, and writing each frequency-domain data symbol in the frequency-domain data stream into a memory. Each of the frequency-domain data symbols includes a first frequency-domain data symbol and a second frequency-domain data symbol. The first frequency-domain data symbol corresponds to a physical downlink control channel and is used to carry downlink control information. The second frequency-domain data symbol corresponds to a physical downlink shared channel and is used to carry service information; performing blind detection of the physical downlink control channel based on the first frequency-domain data symbol in the frequency-domain data stream to obtain a plurality of downlink control information, and storing the plurality of downlink control information in an information collection container; taking out each downlink control information from the information collection container based on a preset order, and parsing each downlink control information to obtain an analysis result of each downlink control information; based on the analysis results of each downlink control information, reading physical downlink shared channel data from the memory and processing the physical downlink shared channel data.

[0107] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0108] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution, or the part that contributes to the relevant technology, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cell service processing method, characterized in that: include: Based on cell search synchronization, a time domain data stream is obtained, time-frequency conversion is performed on the time domain data stream to obtain a frequency domain data stream, and each frequency domain data symbol in the frequency domain data stream is written into a memory, wherein each frequency domain data symbol includes a first frequency domain data symbol and a second frequency domain data symbol, wherein the first frequency domain data symbol corresponds to a physical downlink control channel and is used to carry downlink control information, and the second frequency domain data symbol corresponds to a physical downlink shared channel and is used to carry service information; Performing a physical downlink control channel blind detection based on the first frequency domain data symbol in the frequency domain data stream to obtain a plurality of downlink control information, and storing the plurality of downlink control information in an information collection container; Based on a preset order, taking out each downlink control information from the information collection container, and parsing each downlink control information to obtain a parsing result of each downlink control information; Based on the parsing results of each downlink control information, physical downlink shared channel data is read from the memory, and the physical downlink shared channel data is processed.

2. The cell service processing method according to claim 1, characterized in that: The frequency domain data stream is composed of a plurality of system frames, each system frame includes a plurality of subframes, each subframe corresponds to a plurality of time slots, and each time slot includes at least one first frequency domain data symbol and a plurality of second frequency domain data symbols; Writing each frequency domain data symbol in the frequency domain data stream into a memory includes: Determine an offset address based on a system frame number, a subframe number, a time slot number, and a symbol number corresponding to any frequency domain data symbol; Determine a storage address corresponding to any frequency-domain data symbol based on a cell base address and the offset address; Based on the storage address, any one of the frequency-domain data symbols is written into the memory.

3. The cell service processing method according to claim 2, characterized in that: The step of determining the system frame number corresponding to any frequency domain data symbol comprises: When the configured frame number of the memory is equal to the preset frame number, taking the actual system frame number corresponding to any frequency domain data symbol as the system frame number; In the case that the configured frame number of the memory is less than the preset frame number, the system frame number corresponding to any frequency domain data symbol is determined based on the configured frame number and the actual system frame number corresponding to any frequency domain data symbol.

4. The cell service processing method according to claim 1, characterized in that: The taking out each downlink control information from the information collection container based on a preset order, and parsing each downlink control information to obtain the parsing result of each downlink control information includes: Within the current storage time window, each downlink control information is taken out from the information collection container in turn based on a preset order, and parsing of each downlink control information is completed within the current storage time window to obtain the parsing results of each downlink control information, wherein the storage time window is determined based on the configuration frame number of the memory.

5. The cell service processing method according to any one of claims 1 to 4, characterized in that: Writing each frequency domain data symbol in the frequency domain data stream into a memory includes: Writing the full bandwidth of any frequency domain data symbol into the memory; The reading physical downlink shared channel data from the memory based on the parsing result of each downlink control information includes: Determine a read bandwidth based on the parsing result of any downlink control information; Based on the read bandwidth, physical downlink shared channel data is read from the memory.

6. The cell service processing method according to claim 5, characterized in that: The reading of physical downlink shared channel data from the memory based on the read bandwidth includes: Determine the system frame number, subframe number and time slot number of the associated channel based on the frequency domain data symbol corresponding to any downlink control information; Determine an offset address of the second frequency-domain data symbol based on the system frame number, the subframe number, the time slot number, and the number of the second frequency-domain data symbol; Determine a read address corresponding to the second frequency-domain data symbol based on a cell base address and an offset address of the second frequency-domain data symbol; Physical downlink shared channel data is read from the memory based on the read bandwidth and the read address.

7. A cell service processing device, characterized in that: include: A synchronization unit, configured to obtain a time domain data stream based on cell search synchronization, perform time-frequency conversion on the time domain data stream to obtain a frequency domain data stream, and write each frequency domain data symbol in the frequency domain data stream into a memory, wherein each frequency domain data symbol includes a first frequency domain data symbol and a second frequency domain data symbol, wherein the first frequency domain data symbol corresponds to a physical downlink control channel and is used to carry downlink control information, and the second frequency domain data symbol corresponds to a physical downlink shared channel and is used to carry service information; A blind detection unit, configured to perform blind detection on a physical downlink control channel based on a first frequency domain data symbol in the frequency domain data stream, obtain a plurality of downlink control information, and store the plurality of downlink control information in an information collection container; A parsing unit, configured to retrieve each downlink control information from the information collection container based on a preset time and a preset order, and parse each downlink control information to obtain a parsing result of each downlink control information; The processing unit is configured to read the physical downlink shared channel data from the memory based on the parsing result of each downlink control information, and process the physical downlink shared channel data.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the cell service processing method according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the cell service processing method according to any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the cell service processing method according to any one of claims 1 to 6 is implemented.

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