A network detection method, device, apparatus and storage medium

Abstract

The embodiments of the present invention provide a network detection method, device, apparatus and storage medium, which relate to the field of network technology, wherein the method comprises: obtaining first data for network detection according to a signal transmitted by a base station in a co-frequency cell. Based on a preset PSS sequence, in the first data, determine the PSS initial position corresponding to each beam configured in the co-frequency cell. For each PSS initial position, according to the second data and the reference PSS sequence, obtain the cell identifier of the co-frequency cell configured with the target beam, the first position of the SSS sequence in the second data, and the first network detection result for the target beam, and obtain the second network detection result for the target beam according to the third data and the cell identifier. The solution provided by the embodiment of the present invention can perform network detection on base stations configured with multiple beams in each cell.

Description

Technical Field

[0001] The present invention relates to the field of network technology, and in particular to a network detection method, equipment, device and storage medium. Background Art

[0002] After the base station is installed, in order to determine whether the installed base station has good network coverage, it is necessary to perform network detection on the base station. In the prior art, the cell information carried in the signal is often obtained by collecting the signal transmitted by the base station, and then the network detection result is obtained according to the cell information.

[0003] However, with the development of network technology, in one case, the same cell of a base station may be configured with multiple beams, so that the base station can transmit signals through multiple beams in each cell, and the above base station can be called a multi-beam base station. In another case, the same cell of the base station is configured with a single beam, in which case the above base station can be called a single-beam base station. Compared with a multi-beam base station, a single-beam base station has different frame structures and positions of synchronization signals in the transmitted signals. Therefore, the method for performing network detection on a single-beam base station is not applicable to network detection on a multi-beam base station. Therefore, a method for performing network detection on a multi-beam base station is required. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a network detection method, device, apparatus and storage medium to perform network detection on a base station configured with multiple beams in each cell. The specific technical solution is as follows:

[0005] In a first aspect, an embodiment of the present invention provides a network detection method, the method comprising:

[0006] Obtaining first data for network detection according to a signal transmitted by a base station in a same-frequency cell;

[0007] Based on a preset reference PSS sequence, determining, in the first data, a PSS initial position corresponding to each beam configured in the same-frequency cell;

[0008] For each PSS initial position, according to the second data and the reference PSS sequence, obtain a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam, and according to the third data and the cell identifier, obtain a second network detection result for the target beam;

[0009] Among them, the second data is: the data determined according to the initial position of PSS in the first data, the third data is: the data determined according to the first position in the first data, and the target beam is: the beam corresponding to the initial position of PSS.

[0010] In one embodiment of the present invention, obtaining, according to the second data and the reference PSS sequence, a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam, includes:

[0011] Based on the reference PSS sequence, determine a second position of the PSS sequence in the second data, and determine an intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs;

[0012] Performing time domain interference elimination for the PSS on the second data;

[0013] Based on the second position, determining a first position of an SSS sequence in the second data;

[0014] Determine, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which a same-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam;

[0015] Determine, according to the cell group identifier and the intra-group identifier, a cell identifier of a co-frequency cell in which a target beam is configured, and perform time domain interference elimination for the SSS on the second data;

[0016] If the number of determined cell identifiers is less than or equal to the preset number, return to the step of determining, according to the preset reference SSS sequence and the second data, the cell group identifier of the cell group of the same-frequency cells identified by the SSS sequence in the second data and the first network detection result for the target beam;

[0017] Otherwise, return to the step of determining the second position of the PSS sequence in the second data based on the reference PSS sequence, and determining the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, until determining the intra-group identifier fails.

[0018] In one embodiment of the present invention, determining, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which a co-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam includes:

[0019] According to the fourth data and the preset reference SSS sequence, determine the candidate cell group identifier of the cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs, and calculate the first RSRP of the intra-frequency cell configured with the target beam, wherein the initial value of the fourth data is: the second data;

[0020] According to the intra-group identifier and the candidate cell group identifier, perform time domain interference elimination for the SSS on the fourth data, and return to the step of determining the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence belongs according to the fourth data and the preset reference SSS sequence, until determining the candidate cell group identifier fails;

[0021] The candidate cell group identifier corresponding to the maximum first RSRP is determined as the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence in the second data belongs, and based on the maximum first RSRP, the first network detection result for the target beam is calculated.

[0022] In one embodiment of the present invention, determining, according to the fourth data and a preset reference SSS sequence, a candidate cell group identifier of a cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs includes:

[0023] Determine, from the fourth data, fifth data for determining a cell group identifier according to a first mapping relationship between the SSS and the signal;

[0024] Calculating a peak-to-average ratio between the fifth data and the reference SSS sequence;

[0025] If the calculated first maximum peak-to-average ratio is greater than the first preset peak-to-average ratio, the cell group identifier represented by the target reference SSS sequence used when calculating the first maximum peak-to-average ratio is used as the alternative cell group identifier represented by the SSS sequence in the second data.

[0026] In one embodiment of the present invention, the calculating the first RSRP of the same-frequency cell configuring the target beam includes:

[0027] Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier;

[0028] Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence;

[0029] A first RSRP is calculated according to the channel estimation matrix.

[0030] In one embodiment of the present invention, performing time domain interference elimination on the fourth data for SSS includes:

[0031] Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier;

[0032] Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence;

[0033] Calculate and obtain a first reconstructed signal according to the channel estimation matrix and the SSS sequence;

[0034] The fourth data is subjected to time domain interference elimination for SSS based on the first reconstructed signal.

[0035] In one embodiment of the present invention, determining the second position of the PSS sequence in the second data based on the reference PSS sequence, and determining the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, includes:

[0036] Calculating a peak-to-average ratio between each data segment in the second data and the reference PSS sequence;

[0037] If the calculated second maximum peak-to-average ratio is greater than the second preset peak-to-average ratio, determining the position of the data segment for which the second maximum peak-to-average ratio is calculated in the second data as the second position of the PSS sequence in the second data;

[0038] The intra-group identifier represented by the reference PSS sequence having the second maximum peak-to-average ratio calculated is determined as the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs.

[0039] In one embodiment of the present invention, performing time domain interference elimination on the second data for the PSS includes:

[0040] Generate a PSS sequence according to the intra-group identifier;

[0041] Calculate a channel estimation matrix based on the second data and the generated PSS sequence;

[0042] Calculate and obtain a second reconstructed signal according to the channel estimation matrix and the PSS sequence;

[0043] The second data is subjected to time domain interference elimination for the PSS based on the second reconstructed signal.

[0044] In one embodiment of the present invention, performing time domain interference elimination on the second data for SSS includes:

[0045] Generate an SSS sequence according to the intra-group identifier and the cell group identifier;

[0046] Calculate a channel estimation matrix based on the second data and the generated SSS sequence;

[0047] Calculate and obtain a third reconstructed signal according to the channel estimation matrix and the SSS sequence;

[0048] Time domain interference elimination for SSS is performed on the second data based on the third reconstructed signal.

[0049] In one embodiment of the present invention, obtaining a second network detection result for the target beam according to the third data and the cell identifier includes:

[0050] generating a reference DM-RS sequence according to the cell identifier;

[0051] Determine an SSB identifier of an SSB in the third data based on the reference DM-RS sequence;

[0052] Based on the target reference DM-RS sequence representing the SSB identifier and the third data, obtaining a second network detection result corresponding to the SSB represented by the SSB identifier as the second network detection result for the target beam;

[0053] Based on the target reference DM-RS sequence, the time domain interference of DM-RS is eliminated for the third data, and the step of determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence is returned to execute until it is determined that the SSB identifier fails.

[0054] In one embodiment of the present invention, determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence includes:

[0055] Determine sixth data from the third data according to a second mapping relationship between the DM-RS and the signal;

[0056] Calculating a peak-to-average ratio between the sixth data and the reference DM-RS sequence;

[0057] If the calculated third maximum peak-to-average ratio is greater than the third preset peak-to-average ratio, the SSB identifier represented by the reference DM-RS sequence used when calculating the third maximum peak-to-average ratio is determined as the SSB identifier of the SSB in the third data.

[0058] In one embodiment of the present invention, obtaining a second network detection result corresponding to the SSB represented by the SSB identifier based on the target reference DM-RS sequence representing the SSB identifier and the third data includes:

[0059] Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated;

[0060] Based on the channel estimation matrix, a second RSRP and / or signal to interference and noise ratio is calculated as a second network detection result corresponding to the SSB represented by the SSB identifier.

[0061] In one embodiment of the present invention, the performing time domain interference elimination for DM-RS on the third data based on the target reference DM-RS sequence includes:

[0062] Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated;

[0063] Calculate and obtain a fourth reconstructed signal according to the channel estimation matrix and the target reference DM-RS sequence;

[0064] Time domain interference elimination for DM-RS is performed on the third data based on the fourth reconstructed signal.

[0065] In one embodiment of the present invention, determining, in the first data, the PSS initial position corresponding to each beam configured in the same-frequency cell based on a preset reference PSS sequence includes:

[0066] Calculating a peak-to-average ratio between each data segment in the first data and the reference PSS sequence;

[0067] Determine the position of the first data of at most a preset maximum number of data segments with the largest peak-to-average ratio and greater than a fourth preset peak-to-average ratio as the initial position of the PSS.

[0068] In a second aspect, an embodiment of the present invention provides a network detection device, including a memory, a transceiver, and a processor:

[0069] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0070] Obtaining first data for network detection according to a signal transmitted by a base station in a same-frequency cell;

[0071] Based on a preset reference PSS sequence, determining, in the first data, a PSS initial position corresponding to each beam configured in the same-frequency cell;

[0072] For each PSS initial position, according to the second data and the reference PSS sequence, obtain a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam, and according to the third data and the cell identifier, obtain a second network detection result for the target beam;

[0073] Among them, the second data is: the data determined according to the initial position of PSS in the first data, the third data is: the data determined according to the first position in the first data, and the target beam is: the beam corresponding to the initial position of PSS.

[0074] In one embodiment of the present invention, obtaining, according to the second data and the reference PSS sequence, a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam, specifically includes:

[0075] Based on the reference PSS sequence, determine a second position of the PSS sequence in the second data, and determine an intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs;

[0076] Performing time domain interference elimination for the PSS on the second data;

[0077] Based on the second position, determining a first position of an SSS sequence in the second data;

[0078] Determine, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which a same-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam;

[0079] Determine, according to the cell group identifier and the intra-group identifier, a cell identifier of a co-frequency cell in which a target beam is configured, and perform time domain interference elimination for the SSS on the second data;

[0080] If the number of determined cell identifiers is less than or equal to the preset number, return to the step of determining, according to the preset reference SSS sequence and the second data, the cell group identifier of the cell group of the same-frequency cells identified by the SSS sequence in the second data and the first network detection result for the target beam;

[0081] Otherwise, return to the step of determining the second position of the PSS sequence in the second data based on the reference PSS sequence, and determining the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, until determining the intra-group identifier fails.

[0082] In one embodiment of the present invention, determining, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which a co-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam specifically includes:

[0083] According to the fourth data and the preset reference SSS sequence, determine the candidate cell group identifier of the cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs, and calculate the first RSRP of the intra-frequency cell configured with the target beam, wherein the initial value of the fourth data is: the second data;

[0084] According to the intra-group identifier and the candidate cell group identifier, perform time domain interference elimination for the SSS on the fourth data, and return to the step of determining the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence belongs according to the fourth data and the preset reference SSS sequence, until determining the candidate cell group identifier fails;

[0085] The candidate cell group identifier corresponding to the maximum first RSRP is determined as the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence in the second data belongs, and based on the maximum first RSRP, the first network detection result for the target beam is calculated.

[0086] In one embodiment of the present invention, determining, according to the fourth data and a preset reference SSS sequence, a candidate cell group identifier of a cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs, specifically includes:

[0087] Determine, from the fourth data, fifth data for determining a cell group identifier according to a first mapping relationship between the SSS and the signal;

[0088] Calculating a peak-to-average ratio between the fifth data and the reference SSS sequence;

[0089] If the calculated first maximum peak-to-average ratio is greater than the first preset peak-to-average ratio, the cell group identifier represented by the target reference SSS sequence used when calculating the first maximum peak-to-average ratio is used as the alternative cell group identifier represented by the SSS sequence in the second data.

[0090] In one embodiment of the present invention, the calculating the first RSRP of the same-frequency cell configuring the target beam specifically includes:

[0091] Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier;

[0092] Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence;

[0093] A first RSRP is calculated according to the channel estimation matrix.

[0094] In one embodiment of the present invention, performing time domain interference elimination on the fourth data for SSS specifically includes:

[0095] Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier;

[0096] Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence;

[0097] Calculate and obtain a first reconstructed signal according to the channel estimation matrix and the SSS sequence;

[0098] The fourth data is subjected to time domain interference elimination for SSS based on the first reconstructed signal.

[0099] In one embodiment of the present invention, determining the second position of the PSS sequence in the second data based on the reference PSS sequence, and determining the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, specifically includes:

[0100] Calculating a peak-to-average ratio between each data segment in the second data and the reference PSS sequence;

[0101] If the calculated second maximum peak-to-average ratio is greater than the second preset peak-to-average ratio, determining the position of the data segment for which the second maximum peak-to-average ratio is calculated in the second data as the second position of the PSS sequence in the second data;

[0102] The intra-group identifier represented by the reference PSS sequence having the second maximum peak-to-average ratio calculated is determined as the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs.

[0103] In one embodiment of the present invention, performing time domain interference elimination on the second data for the PSS specifically includes:

[0104] Generate a PSS sequence according to the intra-group identifier;

[0105] Calculate a channel estimation matrix based on the second data and the generated PSS sequence;

[0106] Calculate and obtain a second reconstructed signal according to the channel estimation matrix and the PSS sequence;

[0107] The second data is subjected to time domain interference elimination for the PSS based on the second reconstructed signal.

[0108] In one embodiment of the present invention, performing time domain interference elimination on the second data for SSS specifically includes:

[0109] Generate an SSS sequence according to the intra-group identifier and the cell group identifier;

[0110] Calculate a channel estimation matrix based on the second data and the generated SSS sequence;

[0111] Calculate and obtain a third reconstructed signal according to the channel estimation matrix and the SSS sequence;

[0112] Time domain interference elimination for SSS is performed on the second data based on the third reconstructed signal.

[0113] In one embodiment of the present invention, obtaining a second network detection result for the target beam according to the third data and the cell identifier specifically includes:

[0114] generating a reference DM-RS sequence according to the cell identifier;

[0115] Determine an SSB identifier of an SSB in the third data based on the reference DM-RS sequence;

[0116] Based on the target reference DM-RS sequence representing the SSB identifier and the third data, obtaining a second network detection result corresponding to the SSB represented by the SSB identifier as the second network detection result for the target beam;

[0117] Based on the target reference DM-RS sequence, the time domain interference of DM-RS is eliminated for the third data, and the step of determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence is returned to execute until it is determined that the SSB identifier fails.

[0118] In one embodiment of the present invention, determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence specifically includes:

[0119] Determine sixth data from the third data according to a second mapping relationship between the DM-RS and the signal;

[0120] Calculating a peak-to-average ratio between the sixth data and the reference DM-RS sequence;

[0121] If the calculated third maximum peak-to-average ratio is greater than the third preset peak-to-average ratio, the SSB identifier represented by the reference DM-RS sequence used when calculating the third maximum peak-to-average ratio is determined as the SSB identifier of the SSB in the third data.

[0122] In one embodiment of the present invention, obtaining a second network detection result corresponding to the SSB represented by the SSB identifier based on the target reference DM-RS sequence representing the SSB identifier and the third data specifically includes:

[0123] Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated;

[0124] Based on the channel estimation matrix, a second RSRP and / or signal to interference and noise ratio is calculated as a second network detection result corresponding to the SSB represented by the SSB identifier.

[0125] In one embodiment of the present invention, performing time domain interference elimination for DM-RS on the third data based on the target reference DM-RS sequence specifically includes:

[0126] Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated;

[0127] Calculate and obtain a fourth reconstructed signal according to the channel estimation matrix and the target reference DM-RS sequence;

[0128] Time domain interference elimination for DM-RS is performed on the third data based on the fourth reconstructed signal.

[0129] In one embodiment of the present invention, determining the PSS initial position corresponding to each beam configured in the same-frequency cell in the first data based on a preset reference PSS sequence specifically includes:

[0130] Calculating a peak-to-average ratio between each data segment in the first data and the reference PSS sequence;

[0131] Determine the position of the first data of at most a preset maximum number of data segments with the largest peak-to-average ratio and greater than a fourth preset peak-to-average ratio as the initial position of the PSS.

[0132] In a third aspect, an embodiment of the present invention provides a network detection device, the device comprising:

[0133] A data acquisition module, used to obtain first data for network detection according to a signal transmitted by a base station in a same-frequency cell;

[0134] An initial position determination module, configured to determine, in the first data, a PSS initial position corresponding to each beam configured in the same frequency cell based on a preset reference PSS sequence;

[0135] A detection result acquisition module is used to obtain, for each PSS initial position, a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam according to the second data and the reference PSS sequence, and obtain a second network detection result for the target beam according to the third data and the cell identifier;

[0136] Among them, the second data is: the data determined according to the initial position of PSS in the first data, the third data is: the data determined according to the first position in the first data, and the target beam is: the beam corresponding to the initial position of PSS.

[0137] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, any method step described in the first aspect is implemented.

[0138] In a fifth aspect, an embodiment of the present invention further provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute any of the method steps described in the first aspect.

[0139] Beneficial effects of the embodiments of the present invention:

[0140] The network detection method provided by the embodiment of the present invention can obtain the first data for network detection according to the signal transmitted by the base station in the same-frequency cell, and determine the PSS initial position corresponding to each beam configured in the same-frequency cell in the first data based on the reference PSS sequence, and for each PSS initial position, obtain the cell identifier of the same-frequency cell configured with the beam corresponding to the PSS initial position and the first position of the SSS sequence and the first network detection result of each beam according to the second data and the reference PSS sequence. Then, obtain the second network detection result of each beam according to the third data and the cell identifier.

[0141] From the above, it can be seen that through the scheme provided by the embodiment of the present invention, the initial position of the PSS corresponding to each beam configured in the same-frequency cell can be determined first according to the reference PSS sequence, and then the cell identifier of the same-frequency cell configured with each beam is determined on the basis of the initial position of the PSS, thereby identifying each same-frequency cell of the base station. Then, on the basis of identifying each same-frequency cell, the first network detection result and the second network detection result of each beam configured in the same-frequency cell are determined respectively, thereby completing the network detection process. Therefore, in the case where the base station configures multiple beams for each cell, compared with the method of performing network detection on a single-beam base station, the scheme provided by the embodiment of the present invention can perform network detection on different beams configured in the same-frequency cell respectively, so the scheme provided by the embodiment of the present invention can perform network detection on the base station configured with multiple beams for each cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0142] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and a person skilled in the art can also obtain other drawings based on these drawings.

[0143] Figure 1 A schematic diagram of a flow chart of a first network detection method provided by an embodiment of the present invention;

[0144] Figure 2 A schematic diagram of a flow chart of a second network detection method provided by an embodiment of the present invention;

[0145] Figure 3 A schematic diagram of a flow chart of a third network detection method provided by an embodiment of the present invention;

[0146] Figure 4 A schematic diagram of a flow chart of a fourth network detection method provided by an embodiment of the present invention;

[0147] Figure 5 A schematic diagram of a fifth network detection method provided by an embodiment of the present invention;

[0148] Figure 6 A schematic diagram of the structure of a network detection device provided by an embodiment of the present invention;

[0149] Figure 7 A schematic diagram of a flow chart of a network detection device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0150] In the embodiments of the present invention, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0151] In the embodiments of the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0152] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0153] In order to perform network detection on a base station configured with multiple beams in each cell, an embodiment of the present invention provides a network detection method, device, apparatus and storage medium.

[0154] In one embodiment of the present invention, a network detection method is provided, the method comprising:

[0155] Obtaining first data for network detection according to a signal transmitted by a base station in a same-frequency cell;

[0156] Based on a preset reference PSS sequence, in the first data, determine the PSS initial position corresponding to each beam configured in the same-frequency cell;

[0157] For each PSS initial position, according to the second data and the reference PSS sequence, obtain the cell identifier of the same-frequency cell configuring the target beam, the first position of the SSS sequence in the second data, and the first network detection result for the target beam, and according to the third data and the cell identifier, obtain the second network detection result for the target beam;

[0158] Among them, the above-mentioned second data is: the data determined according to the initial position of PSS in the above-mentioned first data, the above-mentioned third data is: the data determined according to the above-mentioned first position in the above-mentioned first data, and the above-mentioned target beam is: the beam corresponding to the initial position of PSS.

[0159] From the above, it can be seen that through the scheme provided by the embodiment of the present invention, the initial position of the PSS corresponding to each beam configured in the same-frequency cell can be determined first according to the reference PSS sequence, and then the cell identifier of the same-frequency cell configured with each beam is determined on the basis of the initial position of the PSS, thereby identifying each same-frequency cell of the base station. Then, on the basis of identifying each same-frequency cell, the first network detection result and the second network detection result of each beam configured in the same-frequency cell are determined respectively, thereby completing the network detection process. Therefore, in the case where the base station configures multiple beams for each cell, compared with the method of performing network detection on a single-beam base station, the scheme provided by the embodiment of the present invention can perform network detection on different beams configured in the same-frequency cell respectively, so the scheme provided by the embodiment of the present invention can perform network detection on the base station configured with multiple beams for each cell.

[0160] The technical solution provided by the embodiment of the present invention can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, etc. These various systems include terminals and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0161] The terminal involved in the embodiment of the present invention may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal may be called a user equipment (UE). A wireless terminal can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal may be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. A wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, and a user device, but is not limited thereto in the embodiments of the present application.

[0162] In addition, in an embodiment of the present invention, the base station and the terminal may each use one or more antennas for multiple input multiple output (MIMO) transmission, and the MIMO transmission may be single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or may be diversity transmission, precoded transmission or beamforming transmission, etc.

[0163] See also Figure 1, is a flow chart of a first network detection method provided in an embodiment of the present invention, the method includes the following steps S101-S103.

[0164] S101: Obtain first data for network detection according to a signal transmitted by a base station in a same-frequency cell.

[0165] Specifically, the signal may be a signal collected by a device executing an embodiment of the present invention, and the duration of the signal collection by the device may be a fixed duration, which may be a preset multiple of the duration of each time slot in the signal. For example, the fixed duration may be 21 ms.

[0166] The received signal can be directly used as the first data, or the received signal can be downsampled to obtain the first data. Specifically, the downsampling multiple can be a preset multiple, such as 32 times, and downsampling a 21ms signal by 32 times can obtain the first data with a length of 76800 points.

[0167] S102: Based on a preset reference PSS sequence, determine the PSS initial position corresponding to each beam configured in the same-frequency cell in the first data.

[0168] Among them, the PSS (Primary Synchronization Signal) sequence is used to indicate the intra-group identifier of the base station's cell in the cell group to which it belongs. There are three different fixed values, which are used to indicate three different intra-group identifiers. The above PSS sequence contains 127 points of data, and there is a fixed third mapping relationship between it and the signal, that is, the PSS sequence corresponds to a preset position in the signal. Specifically, the above third mapping relationship is that the PSS sequence corresponds to the 56-182 subcarriers in the 0th OFDM (Orthogonal Frequency Division Multiplexing) symbol in the signal.

[0169] In addition, a data bit with a value of 0 may be added to the front end of the above PSS sequence to obtain 128-point data, and then the 128-point data is subjected to a 128-point inverse Fourier transform to obtain time domain data, and then a 128-bit data bit with a value of 0 is added to the front end of the obtained time domain data, and then a 256-point Fourier transform is performed to obtain 256-point frequency domain data as a reference PSS sequence. Among them, a fast Fourier transform algorithm may be used for Fourier transform, and an inverse fast Fourier transform algorithm may be used for inverse Fourier transform.

[0170] In one embodiment of the present invention, co-frequency detection can be performed in the first data based on the reference PSS sequence to determine the data segment that can pass the co-frequency detection, and the position of the determined data segment in the first data is used as the PSS initial position.

[0171] Since each co-frequency cell can be configured with multiple beams, under normal circumstances, the number of beams configured in each co-frequency cell is the same. Therefore, the strongest cell with the largest signal strength can be taken as a representative to determine the position of the PSS sequence representing the sequence number in the first data within the strongest cell group as the above-mentioned PSS initial position. The number of determined PSS initial positions is the same as the number of beams configured in the co-frequency cells.

[0172] In one embodiment of the present invention, the above step S102 can be implemented through steps S102A-S102B, which will not be described in detail in this embodiment of the present invention.

[0173] Moreover, the PSS sequences corresponding to the beams configured in each cell are concentratedly distributed in the first data. Therefore, after determining the initial position of the PSS, the PSS sequence representing the group number of other co-frequency cells other than the strongest cell can be determined in the data near the initial position of the PSS.

[0174] S103: For each PSS initial position, based on the second data and the reference PSS sequence, obtain the cell identifier of the same-frequency cell that configures the target beam, the first position of the SSS sequence in the second data, and the first network detection result for the target beam; based on the third data and the cell identifier, obtain the second network detection result for the target beam.

[0175] Among them, the above-mentioned second data is: the data determined according to the initial position of PSS in the above-mentioned first data, the above-mentioned third data is: the data determined according to the first position in the above-mentioned first data, and the above-mentioned target beam is: the beam corresponding to the initial position of PSS.

[0176] In addition, the SSS (Secondary Synchronization Signal) sequence is used to indicate the cell group identifier of the cell group to which the cell of the base station belongs. There are 336 fixed different values, which are used to indicate 336 different cell group identifiers. The above SSS sequence contains 127 points of data, and there is a fixed first mapping relationship with the signal, that is, the SSS sequence corresponds to a preset position in the signal. Specifically, the above first mapping relationship is that the SSS sequence corresponds to the 56-182 subcarriers in the second OFDM symbol in the signal.

[0177] In one embodiment of the present invention, the intra-group identifier represented by the PSS sequence and the cell group identifier represented by the SSS sequence contained in the second data may be determined respectively, thereby determining the cell identifier of the same-frequency cell.

[0178] In another embodiment of the present invention, the second data may be determined from the first data through the following steps A1 to A2.

[0179] Step A1: Based on a preset first relative position relationship and according to an initial position of the PSS, a first starting position of the second data is determined.

[0180] The first relative position relationship is the relative position relationship between the initial position of the PSS and the first starting position of the second data.

[0181] Specifically, in order to ensure the integrity of the second data, the length of a CP (Cyclic Prefix) of 9 points can be subtracted from the initial position of the PSS, and then the length of half the OFDM symbol can be subtracted to obtain the first starting position of the second data. Among them, the length of an OFDM symbol is 137 points, and the length of half of the OFDM symbol is 68.5 points, which can be rounded down to 68 points as the length of half of the OFDM symbol. Then the above-mentioned first relative position relationship is: the first starting position of the second data is located 77 points before the initial position of the PSS.

[0182] Step A2: Determine data of a first preset length starting from a first starting position in the first data as second data.

[0183] Among them, the above-mentioned first preset length can be 768 points.

[0184] In another embodiment of the present invention, the third data may be determined from the first data through the following steps B1-B2.

[0185] Step B1: Based on a preset second relative position relationship and according to the first position, a second starting position of the third data is determined.

[0186] The second relative position relationship is: the relative position relationship between the first position and the second starting position of the third data.

[0187] Specifically, according to the relative position relationship between the first position of the SSS sequence in the signal and the second starting position of the third data used for network detection, the second starting position of the third data can be obtained by subtracting the length of a CP of 9 points from the first position and then subtracting the length of 2 OFDM symbols of 274 points. Then the above second relative position relationship is: the second starting position is 283 points before the first position

[0188] Step B2: Determine the data of the second preset length starting from the second starting position in the first data as the third data.

[0189] The second preset length may be 1096 points.

[0190] In another embodiment of the present invention, the third position of the PSS sequence in the second data can be determined based on the reference PSS sequence, and then the first position of the SSS sequence in the second data can be determined based on a third relative position relationship between the third position and the first position.

[0191] Specifically, the third relative position relationship may be: the first position is located 2 OFDM symbols after the third position, that is, the first position is located 274 points after the third position.

[0192] In addition, the PSS sequence represents the intra-group identifier of the same-frequency cell configured with the target beam in the cell group to which it belongs, and the SSS sequence represents the cell group identifier of the cell group to which the same-frequency cell configured with the target beam belongs. Therefore, on the basis of determining the intra-group identifier, the cell group identifier represented by the SSS sequence can be determined, thereby determining the cell identifier of the same-frequency cell configured with the target beam. In addition, the SSS sequence can be determined, and the first network detection result can be calculated based on the SSS sequence.

[0193] In another embodiment of the present invention, the position of each SSB (Synchronization Signal Block) can be searched in the third data according to the above-mentioned cell identifier. Each SSB contains information about the target beam configured for the same-frequency cell. The second network detection result for the above-mentioned target beam can be obtained based on the above-mentioned information.

[0194] Among them, after respectively determining the co-frequency cells configured with each target beam, the target beams configured in each co-frequency cell can be determined, so that for each co-frequency cell, the second network detection results of the target beams configured in the co-frequency cell can be combined to obtain the second network detection result of the co-frequency cell.

[0195] Specifically, the sum, average, etc. of the first network detection results of each target beam of the same-frequency cell can be calculated as the first network detection result of the same-frequency cell, and the sum, average, etc. of the second network detection results of each target beam of the same-frequency cell can be calculated as the second network detection result of the same-frequency cell.

[0196] Specifically, the cell identifier, the first location, the first network detection result and the second network detection result may be obtained through steps S103A-S103F, thereby implementing the above step S103, which will not be described in detail in the embodiment of the present invention.

[0197] In addition, the cell identifier, the first location, and the first network detection result and the second network detection result may also be obtained through steps S103G-S103H, which will not be described in detail in the embodiment of the present invention.

[0198] From the above, it can be seen that through the scheme provided by the embodiment of the present invention, the initial position of the PSS corresponding to each beam configured in the same-frequency cell can be determined first according to the reference PSS sequence, and then the cell identifier of the same-frequency cell configured with each beam is determined on the basis of the initial position of the PSS, thereby identifying each same-frequency cell of the base station. Then, on the basis of identifying each same-frequency cell, the first network detection result and the second network detection result of each beam configured in the same-frequency cell are determined respectively, thereby completing the network detection process. Therefore, in the case where the base station configures multiple beams for each cell, compared with the method of performing network detection on a single-beam base station, the scheme provided by the embodiment of the present invention can perform network detection on different beams configured in the same-frequency cell respectively, so the scheme provided by the embodiment of the present invention can perform network detection on the base station configured with multiple beams for each cell.

[0199] See also Figure 2 , is a flow chart of a second network detection method provided by an embodiment of the present invention, which is similar to the above Figure 1 Compared with the illustrated embodiment, the above step S102 can be implemented by the following steps S102A-S102B.

[0200] S102A: Calculate the peak-to-average ratio between each data segment in the first data and the reference PSS sequence.

[0201] Specifically, the first data may be Fourier transformed to obtain the first frequency domain data, and then each data segment in the first frequency domain data may be correlated with the reference PSS sequence to obtain the peak-to-average ratio. The correlation calculation may be a conjugate multiplication calculation.

[0202] The length of the above data segment is the same as the length of the reference PSS sequence. If the above reference PSS sequence is 256-point frequency domain data, the above data segment is also 256-point frequency domain data. If there are three different reference PSS sequences, each data segment can be conjugate multiplied with the three different reference PSS sequences to calculate three peak-to-average ratios.

[0203] In one embodiment of the present invention, starting from the starting position of the first frequency domain data, the data segment located at the starting position can be used to perform correlation calculations with the reference PSS sequence to obtain the peak-to-average ratio, and then the first frequency domain data can be slid according to the first preset sliding length, and the data segment at the next position can be used to perform correlation calculations with the reference PSS sequence to obtain the peak-to-average ratio, and so on, to obtain the peak-to-average ratio between each data segment and the reference PSS sequence.

[0204] For example, the first preset sliding length can be 128 points. If the reference PSS sequence is 256-point frequency domain data, the 256-point data segment consisting of the 0th to 255th bit data from the starting position in the first frequency domain data can be used to perform correlation calculations with the reference PSS sequence to obtain the peak-to-average ratio. After that, the first frequency domain data is slid 128 bits, and the 256-point data segment consisting of the 128th to 383rd bit data is used to perform correlation calculations with the reference PSS sequence, and so on.

[0205] If the above method is used to calculate the peak-to-average ratio, in order to ensure that the last 128 points of data in the first frequency domain data can also be correlated with the 256-point reference PSS sequence, 128 points of data with a value of 0 can be added to the back end of the first data, and then Fourier transform can be performed to obtain the first frequency domain data.

[0206] In addition, if the first data is 76800 points, 128 points of data with a value of 0 are added after the first data to obtain 76928 points of data, if the first sliding length is 128 points, and the reference PSS sequence is 256 points of data, then for each reference PSS sequence, correlation calculations can be performed with 600 different data segments to obtain 600 peak-to-average ratios. If there are 3 different reference PSS sequences, a total of 1800 different peak-to-average ratios can be calculated.

[0207] S102B: Determine the positions of at most a preset maximum number of data segments with the largest peak-to-average ratio and greater than a fourth preset peak-to-average ratio in the first data as the initial positions of the PSS.

[0208] Specifically, the above-mentioned preset maximum number may be the same as the maximum number of beams that can be configured in the same-frequency cell. For example, if each cell is configured with at most 8 beams, the above-mentioned preset maximum number may be 8.

[0209] In addition, the larger the calculated peak-to-average ratio, the higher the probability that the data segment with the calculated peak-to-average ratio contains the PSS sequence. Therefore, the data segment with the largest peak-to-average ratio and greater than the fourth preset peak-to-average ratio can be selected at the position of the first data as the PSS initial position.

[0210] In one embodiment of the present invention, the peak-to-average ratios can be sorted in order from large to small, and it is determined in sequence from front to back whether each peak-to-average ratio is greater than a fourth preset peak-to-average ratio. If so, the position of the data segment in the first data for calculating the above peak-to-average ratio is determined as the PSS initial position, and then it is determined whether the next peak-to-average ratio is greater than the fourth preset peak-to-average ratio, until the peak-to-average ratio is less than the fourth preset peak-to-average ratio, or the number of determined PSS initial positions reaches a preset maximum number.

[0211] In another embodiment of the present invention, the above step S102B can be implemented by the following steps C1 to C3.

[0212] Step C1: Determine whether the calculated fourth peak-to-average ratio is greater than the fourth preset peak-to-average ratio.

[0213] The fourth maximum peak-to-average ratio is the largest peak-to-average ratio among the calculated peak-to-average ratios.

[0214] It can be considered that the data segment for calculating the fourth maximum peak-to-average ratio contains the PSS sequence of the strongest cell. If the above-mentioned fourth maximum peak-to-average ratio is greater than the fourth preset peak-to-average ratio, it can be considered that the PSS sequence of the strongest cell has been successfully detected on a co-frequency basis, and then continue with step C2-step C3. Otherwise, it is considered that the co-frequency detection has failed, and the network detection process can be terminated.

[0215] Step C2: Determine a target reference PSS sequence used when calculating the fourth maximum peak-to-average ratio.

[0216] Specifically, the larger the peak-to-average ratio between the data segment and the reference PSS sequence, the greater the possibility that a PSS sequence identical to the reference PSS sequence exists in the data segment. It can be considered that the data segment used to calculate the above-mentioned fourth maximum peak-to-average ratio contains the PSS sequence of the strongest cell, and the above-mentioned PSS sequence is the above-mentioned target reference PSS sequence.

[0217] Step C3: Determine the positions of at most a preset maximum number of data segments whose peak-to-average ratio with the target reference PSS sequence is the largest and greater than a fourth preset peak-to-average ratio in the first data as PSS initial positions.

[0218] Specifically, since the PSS sequence of each cell is fixed, after determining that the PSS sequence of the strongest cell is the same as the target reference PSS sequence, the peak-to-average ratio between the target reference PSS sequence and other data segments can be determined. The data segment with a larger peak-to-average ratio with the target reference PSS sequence has a greater possibility of containing the PSS sequences corresponding to the beams configured in the strongest cell. Therefore, data segments with a maximum preset maximum number of data segments, with the largest peak-to-average ratio with the target reference PSS sequence, and with a peak-to-average ratio greater than the first preset peak-to-average ratio, can be determined as data segments containing the PSS sequences corresponding to the beams configured in the strongest cell, and the position of the data segment in the first data can be determined as the PSS initial position.

[0219] From the above, it can be seen that the larger the peak-to-average ratio between the data segment and the reference PSS sequence, the greater the possibility that the data segment contains the same PSS sequence as the reference PSS sequence. Therefore, it can be considered that the data segment with the largest peak-to-average ratio and greater than the first preset peak-to-average ratio is more likely to contain the PSS sequence. Therefore, the position of the data segment with the largest calculated peak-to-average ratio in the first data can be used to approximately represent the position of the PSS sequence in the first data as the PSS initial position.

[0220] See also Figure 3 , is a flow chart of a third network detection method provided by an embodiment of the present invention, which is similar to the aforementioned Figure 1 Compared with the embodiment shown, the above step S103 can be implemented by the following steps S103A-S103F.

[0221] S103A: Based on the reference PSS sequence, determine a second position of the PSS sequence in the second data, and determine an intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs.

[0222] In one embodiment of the present invention, since the value of the PSS sequence is fixed, the value of each PSS sequence carried in the second data is one of the reference PSS sequences, and therefore the reference PSS sequence can be referred to to search the second data for a sequence identical to the reference PSS sequence and determined as the PSS sequence in the second data, thereby determining the second position of the PSS sequence in the second data. Furthermore, since the intra-group identifier represented by each PSS sequence is fixed, the intra-group identifier represented by the PSS sequence can be determined based on the determined value of the PSS sequence.

[0223] In another embodiment of the present invention, the above step S103A can be implemented by the following steps D1 to D3.

[0224] Step D1: Calculate the peak-to-average ratio between each data segment in the second data and the reference PSS sequence.

[0225] Specifically, the second data may be subjected to Fourier transformation to obtain second frequency domain data, and correlation calculation may be performed between each data segment in the second frequency domain data and a reference PSS sequence to obtain a peak-to-average ratio.

[0226] The length of the above data segment is the same as the length of the reference PSS sequence. If the above reference PSS sequence is 256-point frequency domain data, the above data segment is also 256-point frequency domain data. If there are three different reference PSS sequences, each data segment can be conjugate multiplied with the three different reference PSS sequences to calculate three peak-to-average ratios.

[0227] In one embodiment of the present invention, starting from the starting position of the second frequency domain data, the data segment located at the starting position can be used to perform correlation calculations with the reference PSS sequence to obtain the peak-to-average ratio, and then the second frequency domain data can be slid according to the second preset sliding length, and the data segment at the next position can be used to perform correlation calculations with the reference PSS sequence, and so on, to obtain the peak-to-average ratio between each data segment and the reference PSS sequence.

[0228] For example, the second preset sliding length can be 128 points. If the reference PSS sequence is 256-point frequency domain data, the 256-point data segment consisting of the 0th to 255th data bits from the starting position in the second frequency domain data can be used to perform correlation calculations with the reference PSS sequence to obtain the peak-to-average ratio. After that, the second frequency domain data is slid 128 bits, and the 256-point data segment consisting of the 128th to 383rd data bits is used to perform correlation calculations with the reference PSS sequence, and so on.

[0229] If the above method is used to calculate the peak-to-average ratio, in order to ensure that the last 128 points of data in the second frequency domain data can also be correlated with the 256-point reference PSS sequence, 128 points of data with a value of 0 can be added to the back end of the second data, and then Fourier transform can be performed to obtain the second frequency domain data.

[0230] In addition, if the first data is 768 points, 128 points of data with a value of 0 are added after the first data to obtain 896 points of data, if the second sliding length is 128 points, and the reference PSS sequence is 256 points of data, then for each reference PSS sequence, correlation calculations can be performed with 6 different data segments to obtain 6 peak-to-average ratios. If there are 3 different reference PSS sequences, a total of 18 different peak-to-average ratios can be calculated.

[0231] Step D2: If the calculated second maximum peak-to-average ratio is greater than the second preset peak-to-average ratio, the position of the data segment for which the second maximum peak-to-average ratio is calculated in the second data is determined as the second position of the PSS sequence in the second data.

[0232] The second maximum peak-to-average ratio is the largest of the calculated peak-to-average ratios.

[0233] Specifically, the larger the calculated peak-to-average ratio is, the higher the probability that the data segment for which the peak-to-average ratio is calculated contains the PSS sequence. Therefore, if the second maximum peak-to-average ratio is greater than the second preset peak-to-average ratio, it indicates that the probability that the data segment contains the PSS sequence is high, and the position of the data segment in the second data can be determined as the second position of the PSS sequence in the second data. Then continue to execute step J.

[0234] Otherwise, if the second maximum peak-to-average ratio is not greater than the second preset peak-to-average ratio, it means that the determination of the second position fails.

[0235] The second preset peak-to-average ratio may be the same as or different from the first preset peak-to-average ratio.

[0236] Step D3: Determine the intra-group identifier represented by the reference PSS sequence having the second maximum peak-to-average ratio as the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs.

[0237] Specifically, the larger the peak-to-average ratio obtained by correlation calculation between the data segment and the reference PSS sequence, the greater the probability that the data segment contains a PSS sequence that is identical to the reference PSS sequence. Therefore, the intra-group identifier represented by the reference PSS sequence can be used as the intra-group identifier represented by the PSS sequence in the second data.

[0238] S103B: Perform time domain interference elimination for PSS on the second data.

[0239] In one embodiment of the present invention, the above step S103B can be implemented by the following steps E1 to E4.

[0240] Step E1: Generate a PSS sequence according to the above intra-group identifier.

[0241] Specifically, the PSS sequence used to represent the above-mentioned intra-group identifier may be generated according to the PSS sequence generation formula in the prior art.

[0242] Step E2: Based on the second data and the generated PSS sequence, a channel estimation matrix is ​​calculated.

[0243] Specifically, channel estimation calculation can be performed based on the above-mentioned second data and the generated PSS sequence to obtain a channel estimation matrix, wherein the channel estimation calculation can be performed by the LS (Least Squares) algorithm of DFT (Discrete Fourier Transform) windowing and denoising.

[0244] In one embodiment of the present invention, data containing a PSS sequence can be determined from the second data according to the third mapping relationship, the determined data can be converted into frequency domain data, and then a channel estimation matrix can be calculated based on the frequency domain data and the generated PSS sequence.

[0245] The determined data may be subjected to Fourier transformation to obtain frequency domain data.

[0246] Step E3: Calculate and obtain a second reconstructed signal based on the channel estimation matrix and the PSS sequence.

[0247] Specifically, the above channel estimation matrix may be multiplied by a PSS sequence to obtain a second reconstructed signal.

[0248] Step E4: performing time domain interference elimination for PSS on the second data based on the second reconstructed signal.

[0249] Specifically, the second reconstructed signal may be converted into time domain data, and then the time domain data may be subtracted from the second data, thereby performing time domain interference elimination on the PSS data on the second data.

[0250] S103C: Based on the second position, determine the first position of the SSS sequence in the second data.

[0251] Among them, there is a fixed third mapping relationship between the PPS sequence and the signal, there is a fixed first mapping relationship between the SSS sequence and the signal, the PSS sequence and the SSS sequence are located at fixed positions in the signal, so there is a fixed relative position relationship between the PSS sequence and the SSS sequence, and the first position of the SSS sequence in the second data can be determined based on the second position of the PSS sequence in the second data and the above-mentioned fixed relative position relationship.

[0252] Specifically, the SSS sequence is located at the position of 277 data points after the PSS sequence, and 277 can be added to the second position to obtain the first position.

[0253] S103D: According to the preset reference SSS sequence and the second data, determine the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence in the second data belongs and the first network detection result for the target beam.

[0254] In one embodiment of the present invention, since the value of the SSS sequence is fixed, the fixed SSS sequence can be used as the reference SSS sequence. The SSS sequence has 336 different values, and the reference SSS sequence can also be 336. The value of the SSS sequence carried in the second data is one of the reference SSS sequences. Therefore, the reference SSS sequence can be referred to to search the second data for a sequence identical to the reference SSS sequence and determine it as the SSS sequence in the second data, so that the cell group identifier represented by the SSS sequence can be determined.

[0255] In another embodiment of the present invention, the above step S103D can be implemented through steps S103D1 to S103D3, which will not be described in detail here.

[0256] S103E: Determine the cell identifier of the same-frequency cell configured with the target beam according to the cell group identifier and the intra-group identifier, and perform time domain interference elimination for the SSS on the second data.

[0257] Specifically, the cell group to which the intra-frequency cell configuring the target beam belongs can be determined according to the cell group identifier, and then the identifier of the intra-frequency cell in the cell group to which it belongs can be determined according to the intra-group identifier. Therefore, the cell identifier can be determined based on the above intra-group identifier and the cell group identifier.

[0258] The product obtained by multiplying the intra-group identifier by 3 may be calculated, and the sum of the product and the cell group identifier is used as the cell identifier.

[0259] In one embodiment of the present invention, the time domain interference elimination for SSS can be performed on the second data through the following steps F1 to F4.

[0260] Step F1: Generate an SSS sequence according to the above intra-group identifier and cell group identifier.

[0261] Specifically, the cell identifier may be determined according to the intra-group identifier and the cell group identifier, and an SSS sequence corresponding to the cell identifier may be generated according to an SSS sequence generation formula in the prior art.

[0262] Step F2: Based on the second data and the generated SSS sequence, a channel estimation matrix is ​​calculated.

[0263] Specifically, channel estimation calculation may be performed based on the second data and the generated SSS sequence to obtain a channel estimation matrix, wherein the channel estimation calculation may be performed using an LS algorithm of DFT windowing and denoising.

[0264] In one embodiment of the present invention, data containing an SSS sequence can be determined from the second data according to the above-mentioned first mapping relationship. The determined data length is the same as the length of the SSS sequence, which is 127 points. A bit of data with a value of 0 can be added before the determined data, and the data after the addition of 0 is converted into frequency domain data. The channel estimation matrix is ​​then calculated based on the above-mentioned frequency domain data and the generated SSS sequence.

[0265] The determined data may be subjected to Fourier transformation to obtain frequency domain data.

[0266] Step F3: Calculate and obtain a third reconstructed signal according to the above channel estimation matrix and the SSS sequence.

[0267] Specifically, the above channel estimation matrix may be multiplied by the SSS sequence to obtain a third reconstructed signal.

[0268] Step F4: performing time domain interference elimination for SSS on the second data based on the third reconstructed signal.

[0269] Specifically, the third reconstructed signal may be converted into time domain data, and then the time domain data may be subtracted from the second data, thereby eliminating the time domain interference of the SSS data on the second data.

[0270] If the number of determined cell identifiers is less than or equal to the preset number, it is necessary to continue to determine the cell identifiers of the same-frequency cells, and the process may return to execute the above step S103D.

[0271] Otherwise, if the number of determined cell identifiers is greater than the preset number, return to step S103A to continue determining the second position and the intra-group identifier of the new PSS sequence in the second data until the intra-group identifier fails to be determined, and then execute step S103F. Specifically, if the calculated second maximum peak-to-average ratio is not greater than the second preset peak-to-average ratio, it can be considered that the determination of the second position has failed.

[0272] For example, the preset number may be the same as the expected number of intra-frequency cells, such as 8, 10, etc.

[0273] S103F: Obtain a second network detection result for the target beam based on the third data and the cell identifier.

[0274] As can be seen from the above, through the embodiment of the present invention, the second position of the PSS sequence contained in the second data and the group identifier represented by the PSS sequence can be determined in sequence. On the basis of the determined second position, the first position of the SSS sequence contained in the second data and the first network detection result can be determined. And the cell group identifier represented by the SSS sequence in the second data can be determined, so that the cell identifier of the same frequency cell can be determined, that is, the cell configured with the above target beam can be determined, so that the second network detection result of the above target beam can be obtained according to the above cell identifier.

[0275] See also Figure 4 , is a flow chart of a fourth network detection method provided by an embodiment of the present invention, which is similar to the aforementioned Figure 3 Compared with the embodiment shown, the above step S103D can be implemented by the following steps S103D1 to S103D3.

[0276] S103D1: Determine, based on the fourth data and the preset reference SSS sequence, the candidate cell group identifier of the cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs, and calculate the first RSRP of the intra-frequency cell configured with the target beam.

[0277] Wherein, the initial value of the fourth data is: the second data. Then the fourth data is the backup data of the second data.

[0278] In one embodiment of the present invention, the candidate cell group identifier may be determined through the following steps G1 to G3.

[0279] Step G1: According to the first mapping relationship between the SSS and the signal, determine the fifth data for determining the cell group identifier from the fourth data.

[0280] Specifically, the position of the SSS sequence in the signal is recorded in the first mapping relationship, so the data for determining the cell group identifier can be determined from the fourth data according to the first mapping relationship, and the length of the determined data can be the same as the fixed length of the SSS sequence, which is 127 points of data. A bit of data with a value of 0 can be added to the front end of the determined 127 points of data to obtain 128 points of time domain data, and then the time domain data is converted into frequency domain data to obtain the fifth data.

[0281] The 128-point time domain data may be subjected to Fourier transformation to obtain the frequency domain data.

[0282] Step G2: Calculate the peak-to-average ratio between the fifth data and the reference SSS sequence.

[0283] In one embodiment of the present invention, correlation calculations may be performed on the fifth data and each reference SSS sequence to obtain a peak-to-average ratio between the fifth data and each reference SSS sequence.

[0284] Specifically, the above-mentioned related calculation may be a conjugate multiplication calculation.

[0285] Step G3: If the calculated first maximum peak-to-average ratio is greater than the first preset peak-to-average ratio, the cell group identifier represented by the target reference SSS sequence used when calculating the above-mentioned first maximum peak-to-average ratio is used as the alternative cell group identifier represented by the SSS sequence in the above-mentioned second data.

[0286] Specifically, the first maximum peak-to-average ratio is the maximum value among the calculated peak-to-average ratios.

[0287] If the calculated first maximum peak-to-average ratio is not greater than the first preset peak-to-average ratio, it can be considered that the determination of the candidate cell group identifier has failed.

[0288] In another embodiment of the present invention, the first RSRP (Reference Signal Receiving Power) of the same-frequency cell configured with the above-mentioned target beam can be calculated through the following steps H1 to H3.

[0289] Step H1: Generate an SSS sequence according to the above intra-group identifier and the candidate cell group identifier.

[0290] In one embodiment of the present invention, the candidate cell identifier may be determined according to the intra-group identifier and the candidate cell group identifier. According to the SSS sequence generation formula in the prior art, an SSS sequence corresponding to the candidate cell identifier is generated.

[0291] Specifically, the method of determining the candidate cell identifier according to the intra-group identifier and the candidate cell group identifier is similar to the aforementioned step S103E, and will not be described in detail in this embodiment of the present invention.

[0292] Step H2: Based on the fourth data and the generated SSS sequence, a channel estimation matrix is ​​calculated.

[0293] Specifically, according to the first mapping relationship between the SSS and the signal, the fifth data for determining the cell group identifier is determined from the fourth data, and the channel estimation calculation is performed on the fifth data and the generated SSS sequence to obtain a channel estimation matrix. The channel estimation calculation can be performed by the LS algorithm of DFT windowing denoising.

[0294] The method of determining the fifth data from the fourth data is the same as the aforementioned step S, and will not be described in detail in the embodiment of the present invention.

[0295] Step H3: Calculate the first RSRP according to the above channel estimation matrix.

[0296] Specifically, the first RSRP can be calculated by the following formula:

[0297] RSRP_sss=|H_Sss| 2

[0298] Among them, the above RSRP_sss is the above first RSRP, and the above H_sss is the above channel estimation matrix.

[0299] S103D2: According to the above-mentioned intra-group identifier and the candidate cell group identifier, the time domain interference elimination for SSS is performed on the above-mentioned fourth data, and the process returns to step S103D1 until it is determined that the candidate cell group identifier fails, and then step S103D3 is executed.

[0300] In one embodiment of the present invention, the time domain interference elimination for SSS can be performed on the fourth data through the following steps I1 to I4.

[0301] Step I1: Generate an SSS sequence according to the above intra-group identifier and the candidate cell group identifier.

[0302] Step I2: Based on the fourth data and the generated SSS sequence, a channel estimation matrix is ​​calculated.

[0303] Specifically, the above steps I1 and I2 are the same as the above steps H1 and H2, and will not be described in detail in this embodiment of the present invention.

[0304] Step I3: Calculate and obtain a first reconstructed signal based on the above channel estimation matrix and the SSS sequence.

[0305] Specifically, the above channel estimation matrix may be multiplied by the SSS sequence to obtain a first reconstructed signal.

[0306] Step I4: performing time domain interference elimination for SSS on the fourth data based on the first reconstructed signal.

[0307] Specifically, the first reconstructed signal may be converted into time domain data, and then the time domain data may be subtracted from the fourth data, so as to eliminate the time domain interference of the SSS data on the fourth data.

[0308] S103D3: Determine the candidate cell group identifier corresponding to the maximum first RSRP as the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence in the above second data belongs, and calculate the first network detection result for the above target beam based on the maximum first RSRP.

[0309] Specifically, the maximum first RSRP is the maximum value among the calculated first RSRPs.

[0310] The larger the first RSRP corresponding to the alternative cell group identifier, the greater the power of the target beam corresponding to the alternative cell group, and the more accurate the determined alternative cell group identifier. Therefore, the alternative cell group identifier corresponding to the maximum first RSRP can be used as the above-mentioned cell group identifier.

[0311] In addition, the maximum first RSRP and / or the signal to interference plus noise ratio calculated based on the maximum first RSRP may be used as the first network detection result.

[0312] In one embodiment of the present invention, the signal to interference noise ratio may be calculated using the following formula:

[0313]

[0314] Wherein, the above-mentioned SINR_SSS is the above-mentioned signal to interference noise ratio, RSRP_SSS is the above-mentioned first RSRP, and n 2 is the noise power.

[0315] Specifically, the above-mentioned channel estimation matrix can be multiplied by the reference SSS sequence corresponding to the maximum first RSRP to obtain a reconstructed signal, and then the reconstructed signal can be converted into time domain data, and the difference between the fourth data and the time domain data can be calculated. Based on the above-mentioned difference, the noise power calculation method in the prior art is used to calculate the above-mentioned noise power.

[0316] As can be seen from the above, the alternative cell group identifiers represented by each SSS sequence contained in the fourth data can be determined in turn, and the alternative cell group identifier with the largest power of the corresponding target beam can be selected as the above-mentioned cell group identifier represented by the SSS sequence. After determining the above-mentioned cell group identifier, time domain interference elimination can be performed on the second data, and the data related to the SSS sequence corresponding to the determined cell group identifier can be eliminated, and then the cell group identifier of the SSS sequence in the second data can be re-determined, and so on. The cell group identifiers of each SSS sequence contained in the second data can be determined, and the first network detection result of the target beam can be determined in the process of determining the cell group identifier.

[0317] See also Figure 5 , is a flow chart of a fifth network detection method provided by an embodiment of the present invention, which is similar to the above Figure 1 Compared with the embodiment shown, the above step S103 can be implemented by the following steps S103G to S103K.

[0318] S103G: For each PSS initial position, based on the second data and the reference PSS sequence, obtain the cell identifier of the same-frequency cell that configures the target beam and the first position of the SSS sequence in the second data.

[0319] In one embodiment of the present invention, the above step S103G can be determined and implemented through the above steps S103A-S103E, which will not be described in detail here.

[0320] S103H: Generate a reference DM-RS sequence according to the above cell identifier.

[0321] Specifically, according to the cell identifier, a DM-RS (Demodulation Reference Signal) sequence generation formula in the prior art may be used to generate a DM-RS sequence corresponding to the cell identifier.

[0322] Among them, 8 different reference DM-RS sequences can be generated, and each reference DM-RS sequence corresponds to an SSB identifier.

[0323] S103I: Based on the above reference DM-RS sequence, determine the SSB identifier of the SSB in the third data.

[0324] Specifically, since the value of the DM-RS sequence is fixed, the value of each DM-RS sequence carried in the third data is one of the above-mentioned reference DM-RS sequences. Therefore, the above-mentioned reference DM-RS sequence can be referred to to search for a sequence identical to the reference DM-RS sequence from the third data and determine it as the DM-RS sequence in the third data, so that the SSB identifier corresponding to the reference DM-RS sequence identical to the above-mentioned DM-RS sequence can be determined as the SSB identifier of the SSB in the third data.

[0325] In one embodiment of the present invention, the SSB identifier of the SSB in the third data can also be determined through the following steps J1-J3.

[0326] Step J1: Determine sixth data from the third data according to a second mapping relationship between DM-RS and the signal.

[0327] Specifically, the DM-RS sequence contains 144 points of data, and there is a fixed second mapping relationship with the signal, that is, the DM-RS sequence corresponds to a preset position in the signal. Specifically, the remainder v between the above cell identifier and 4 can be calculated, and the above second mapping relationship is the v+0th, v+4th, v+8th to v+236th subcarriers in the first and third OFDM symbols in the DM-RS sequence corresponding signal, and the v+0th, v+4th, v+8th to v+44th and v+192, v+196 to v+236th subcarriers in the second OFDM symbol.

[0328] The third data may be converted into frequency domain data, and then the sixth data at the location of the DM-RS sequence may be determined from the frequency domain data according to the second mapping relationship.

[0329] Step J2: Calculate the peak-to-average ratio between the sixth data and the reference DM-RS sequence.

[0330] Specifically, correlation calculation may be performed on the sixth data and each different reference DM-RS sequence to obtain a peak-to-average ratio. The correlation calculation may be a conjugate calculation.

[0331] Step J3: If the calculated third maximum peak-to-average ratio is greater than the third preset peak-to-average ratio, determine the SSB identifier represented by the reference DM-RS sequence used when calculating the third maximum peak-to-average ratio as the SSB identifier of the SSB in the third data.

[0332] The third maximum peak-to-average ratio is the maximum value among the calculated peak-to-average ratios.

[0333] Specifically, the larger the calculated peak-to-average ratio is, the higher the possibility that the sixth data is the same as the reference DM-RS. Therefore, if the third maximum peak-to-average ratio is greater than the third preset peak-to-average ratio, it can be considered that the sixth data is likely to be the same as the reference DM-RS sequence used when calculating the third maximum peak-to-average ratio. This means that the third data is likely to contain the reference DM-RS sequence. The SSB identifier represented by the reference DM-RS sequence can be used as the SSB identifier of the SSB in the third data.

[0334] If the third maximum peak-to-average ratio is not greater than the third preset peak-to-average ratio, it is determined that the SSB identification has failed.

[0335] The third preset peak-to-average ratio may be the same as or different from the first preset peak-to-average ratio, and the third preset peak-to-average ratio may be the same as or different from the second preset peak-to-average ratio.

[0336] S103J: Based on the target reference DM-RS sequence representing the above-mentioned SSB identifier and the above-mentioned third data, a second network detection result corresponding to the SSB represented by the above-mentioned SSB identifier is obtained as the second network detection result for the above-mentioned target beam.

[0337] In one embodiment of the present invention, the above step S103J can be implemented by the following steps K1-K2.

[0338] Step K1: Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated.

[0339] In one embodiment of the present invention, sixth data may be determined from the third data according to the second mapping relationship between the DM-RS and the signal, and then channel estimation may be performed on the sixth data and the third data to obtain a channel estimation matrix.

[0340] Among them, the channel estimation calculation can be performed through the LS algorithm of DFT windowing and denoising.

[0341] Specifically, the method of determining the sixth data is the same as that of the aforementioned step J1, and will not be described in detail in this embodiment of the present invention.

[0342] Step K2: Based on the above channel estimation matrix, a second RSRP and / or signal to interference and noise ratio is calculated as a second network detection result corresponding to the SSB represented by the above SSB identifier.

[0343] Specifically, the second RSRP may be calculated using the following formula:

[0344] RSRP_DMRS=|H_DMRS| 2

[0345] Among them, the above-mentioned RSRP_DMRS is the above-mentioned second RSRP, and the above-mentioned H_DMRS is the above-mentioned channel estimation matrix.

[0346] The signal-to-interference-noise ratio can be calculated using the following formula:

[0347]

[0348] Wherein, the above-mentioned SINR_DMRS is the above-mentioned signal to interference plus noise ratio, RSRP_DMRS is the above-mentioned second RSRP, and n 2 is the noise power.

[0349] Specifically, the above-mentioned channel estimation matrix can be multiplied by the target reference DM-RS sequence to obtain a fourth reconstructed signal, and then the fourth reconstructed signal can be converted into time domain data, and the difference between the third data and the time domain data can be calculated. Based on the above-mentioned difference, the noise power calculation method in the prior art is used to calculate the above-mentioned noise power.

[0350] S103H: Based on the target reference DM-RS sequence, the time domain interference elimination for DM-RS is performed on the third data, and the process returns to step S103I until it is determined that the SSB identification fails.

[0351] In one embodiment of the present invention, the time domain interference elimination for DM-RS can be performed on the third data through the following steps L1 to L3.

[0352] Step L1: Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated.

[0353] Specifically, the process of calculating and obtaining the channel estimation matrix is ​​the same as the aforementioned step K1, and will not be described in detail in this embodiment of the present invention.

[0354] Step L2: Calculate and obtain a fourth reconstructed signal according to the above channel estimation matrix and the target reference DM-RS sequence.

[0355] Specifically, the above channel estimation matrix may be multiplied by the target reference DM-RS sequence to obtain a fourth reconstructed signal.

[0356] Step L3: Eliminate time domain interference of DM-RS on the third data based on the fourth reconstructed signal.

[0357] Specifically, the fourth reconstructed signal may be converted into time domain data, and the time domain data may be subtracted from the third data to complete the time domain interference elimination for the DM-RS on the third data.

[0358] It can be seen from the above that since each DM-RS sequence corresponds to an SSB, and an SSB corresponds to a beam, each SSB in the third data can be determined by determining the DM-RS contained in the third data, thereby determining the second network detection result of each beam based on the above SSB.

[0359] Corresponding to the aforementioned network detection method, the embodiment of the present invention further provides a network detection device, see Figure 6 , is a schematic diagram of the structure of a network detection device provided by an embodiment of the present invention, wherein the base station includes a memory 601, a transceiver 602, and a processor 603:

[0360] The memory 601 is used to store computer programs; the transceiver 602 is used to send and receive data under the control of the processor; the processor 603 is used to read the computer program in the memory and perform the following operations:

[0361] Obtaining first data for network detection according to a signal transmitted by a base station in a same-frequency cell;

[0362] Based on a preset reference PSS sequence, determining, in the first data, a PSS initial position corresponding to each beam configured in the same-frequency cell;

[0363] For each PSS initial position, according to the second data and the reference PSS sequence, obtain a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam, and according to the third data and the cell identifier, obtain a second network detection result for the target beam;

[0364] Among them, the second data is: the data determined according to the initial position of PSS in the first data, the third data is: the data determined according to the first position in the first data, and the target beam is: the beam corresponding to the initial position of PSS.

[0365] From the above, it can be seen that through the scheme provided by the embodiment of the present invention, the initial position of the PSS corresponding to each beam configured in the same-frequency cell can be determined first according to the reference PSS sequence, and then the cell identifier of the same-frequency cell configured with each beam is determined on the basis of the initial position of the PSS, thereby identifying each same-frequency cell of the base station. Then, on the basis of identifying each same-frequency cell, the first network detection result and the second network detection result of each beam configured in the same-frequency cell are determined respectively, thereby completing the network detection process. Therefore, in the case where the base station configures multiple beams for each cell, compared with the method of performing network detection on a single-beam base station, the scheme provided by the embodiment of the present invention can perform network detection on different beams configured in the same-frequency cell respectively, so the scheme provided by the embodiment of the present invention can perform network detection on the base station configured with multiple beams for each cell.

[0366] In one embodiment of the present invention, obtaining, according to the second data and the reference PSS sequence, a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam, specifically includes:

[0367] Based on the reference PSS sequence, determine a second position of the PSS sequence in the second data, and determine an intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs;

[0368] Performing time domain interference elimination for the PSS on the second data;

[0369] Based on the second position, determining a first position of an SSS sequence in the second data;

[0370] Determine, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which a same-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam;

[0371] Determine, according to the cell group identifier and the intra-group identifier, a cell identifier of a co-frequency cell in which a target beam is configured, and perform time domain interference elimination for the SSS on the second data;

[0372] If the number of determined cell identifiers is less than or equal to the preset number, return to the step of determining, according to the preset reference SSS sequence and the second data, the cell group identifier of the cell group of the same-frequency cells identified by the SSS sequence in the second data and the first network detection result for the target beam;

[0373] Otherwise, return to the step of determining the second position of the PSS sequence in the second data based on the reference PSS sequence, and determining the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, until determining the intra-group identifier fails.

[0374] As can be seen from the above, through the embodiment of the present invention, the second position of the PSS sequence contained in the second data and the group identifier represented by the PSS sequence can be determined in sequence. On the basis of the determined second position, the first position of the SSS sequence contained in the second data and the first network detection result can be determined. And the cell group identifier represented by the SSS sequence in the second data can be determined, so that the cell identifier of the same frequency cell can be determined, that is, the cell configured with the above target beam can be determined, so that the second network detection result of the above target beam can be obtained according to the above cell identifier.

[0375] In one embodiment of the present invention, determining, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which a co-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam specifically includes:

[0376] According to the fourth data and the preset reference SSS sequence, determine the candidate cell group identifier of the cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs, and calculate the first RSRP of the intra-frequency cell configured with the target beam, wherein the initial value of the fourth data is: the second data;

[0377] According to the intra-group identifier and the candidate cell group identifier, perform time domain interference elimination for the SSS on the fourth data, and return to the step of determining the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence belongs according to the fourth data and the preset reference SSS sequence, until determining the candidate cell group identifier fails;

[0378] The candidate cell group identifier corresponding to the maximum first RSRP is determined as the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence in the second data belongs, and based on the maximum first RSRP, the first network detection result for the target beam is calculated.

[0379] As can be seen from the above, the alternative cell group identifiers represented by each SSS sequence contained in the fourth data can be determined in turn, and the alternative cell group identifier with the largest power of the corresponding target beam can be selected as the above-mentioned cell group identifier represented by the SSS sequence. After determining the above-mentioned cell group identifier, time domain interference elimination can be performed on the second data, and the data related to the SSS sequence corresponding to the determined cell group identifier can be eliminated, and then the cell group identifier of the SSS sequence in the second data can be re-determined, and so on. The cell group identifiers of each SSS sequence contained in the second data can be determined, and the first network detection result of the target beam can be determined in the process of determining the cell group identifier.

[0380] In one embodiment of the present invention, determining, according to the fourth data and a preset reference SSS sequence, a candidate cell group identifier of a cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs, specifically includes:

[0381] Determine, from the fourth data, fifth data for determining a cell group identifier according to a first mapping relationship between the SSS and the signal;

[0382] Calculating a peak-to-average ratio between the fifth data and the reference SSS sequence;

[0383] If the calculated first maximum peak-to-average ratio is greater than the first preset peak-to-average ratio, the cell group identifier represented by the target reference SSS sequence used when calculating the first maximum peak-to-average ratio is used as the alternative cell group identifier represented by the SSS sequence in the second data.

[0384] In one embodiment of the present invention, the calculating the first RSRP of the same-frequency cell configuring the target beam specifically includes:

[0385] Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier;

[0386] Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence;

[0387] A first RSRP is calculated according to the channel estimation matrix.

[0388] In one embodiment of the present invention, performing time domain interference elimination on the fourth data for SSS specifically includes:

[0389] Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier;

[0390] Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence;

[0391] Calculate and obtain a first reconstructed signal according to the channel estimation matrix and the SSS sequence;

[0392] The fourth data is subjected to time domain interference elimination for SSS based on the first reconstructed signal.

[0393] In one embodiment of the present invention, determining the second position of the PSS sequence in the second data based on the reference PSS sequence, and determining the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, specifically includes:

[0394] Calculating a peak-to-average ratio between each data segment in the second data and the reference PSS sequence;

[0395] If the calculated second maximum peak-to-average ratio is greater than the second preset peak-to-average ratio, determining the position of the data segment for which the second maximum peak-to-average ratio is calculated in the second data as the second position of the PSS sequence in the second data;

[0396] The intra-group identifier represented by the reference PSS sequence having the second maximum peak-to-average ratio calculated is determined as the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs.

[0397] In one embodiment of the present invention, performing time domain interference elimination on the second data for the PSS specifically includes:

[0398] Generate a PSS sequence according to the intra-group identifier;

[0399] Calculate a channel estimation matrix based on the second data and the generated PSS sequence;

[0400] Calculate and obtain a second reconstructed signal according to the channel estimation matrix and the PSS sequence;

[0401] The second data is subjected to time domain interference elimination for the PSS based on the second reconstructed signal.

[0402] In one embodiment of the present invention, performing time domain interference elimination on the second data for SSS specifically includes:

[0403] Generate an SSS sequence according to the intra-group identifier and the cell group identifier;

[0404] Calculate a channel estimation matrix based on the second data and the generated SSS sequence;

[0405] Calculate and obtain a third reconstructed signal according to the channel estimation matrix and the SSS sequence;

[0406] Time domain interference elimination for SSS is performed on the second data based on the third reconstructed signal.

[0407] In one embodiment of the present invention, obtaining a second network detection result for the target beam according to the third data and the cell identifier specifically includes:

[0408] generating a reference DM-RS sequence according to the cell identifier;

[0409] Determine an SSB identifier of an SSB in the third data based on the reference DM-RS sequence;

[0410] Based on the target reference DM-RS sequence representing the SSB identifier and the third data, obtaining a second network detection result corresponding to the SSB represented by the SSB identifier as the second network detection result for the target beam;

[0411] Based on the target reference DM-RS sequence, the time domain interference of DM-RS is eliminated for the third data, and the step of determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence is returned to execute until it is determined that the SSB identifier fails.

[0412] It can be seen from the above that since each DM-RS sequence corresponds to an SSB, and an SSB corresponds to a beam, each SSB in the third data can be determined by determining the DM-RS contained in the third data, thereby determining the second network detection result of each beam based on the above SSB.

[0413] In one embodiment of the present invention, determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence specifically includes:

[0414] Determine sixth data from the third data according to a second mapping relationship between the DM-RS and the signal;

[0415] Calculating a peak-to-average ratio between the sixth data and the reference DM-RS sequence;

[0416] If the calculated third maximum peak-to-average ratio is greater than the third preset peak-to-average ratio, the SSB identifier represented by the reference DM-RS sequence used when calculating the third maximum peak-to-average ratio is determined as the SSB identifier of the SSB in the third data.

[0417] In one embodiment of the present invention, obtaining a second network detection result corresponding to the SSB represented by the SSB identifier based on the target reference DM-RS sequence representing the SSB identifier and the third data specifically includes:

[0418] Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated;

[0419] Based on the channel estimation matrix, a second RSRP and / or signal to interference and noise ratio is calculated as a second network detection result corresponding to the SSB represented by the SSB identifier.

[0420] In one embodiment of the present invention, performing time domain interference elimination for DM-RS on the third data based on the target reference DM-RS sequence specifically includes:

[0421] Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated;

[0422] Calculate and obtain a fourth reconstructed signal according to the channel estimation matrix and the target reference DM-RS sequence;

[0423] Time domain interference elimination for DM-RS is performed on the third data based on the fourth reconstructed signal.

[0424] In one embodiment of the present invention, determining the PSS initial position corresponding to each beam configured in the same-frequency cell in the first data based on a preset reference PSS sequence specifically includes:

[0425] Calculating a peak-to-average ratio between each data segment in the first data and the reference PSS sequence;

[0426] Determine the position of the first data of at most a preset maximum number of data segments with the largest peak-to-average ratio and greater than a fourth preset peak-to-average ratio as the initial position of the PSS.

[0427] From the above, it can be seen that the larger the peak-to-average ratio between the data segment and the reference PSS sequence, the greater the possibility that the data segment contains the same PSS sequence as the reference PSS sequence. Therefore, it can be considered that the data segment with the largest peak-to-average ratio and greater than the first preset peak-to-average ratio is more likely to contain the PSS sequence. Therefore, the position of the data segment with the largest calculated peak-to-average ratio in the first data can be used to approximately represent the position of the PSS sequence in the first data as the PSS initial position.

[0428] Corresponding to the aforementioned network detection method, see Figure 7 , is a schematic diagram of the structure of a network detection device provided by an embodiment of the present invention, the device comprising:

[0429] The data acquisition module 701 is used to obtain first data for network detection according to a signal transmitted by a base station in a same-frequency cell;

[0430] An initial position determination module 702 is used to determine, in the first data, a PSS initial position corresponding to each beam configured in the same frequency cell based on a preset reference PSS sequence;

[0431] The detection result acquisition module 703 is used to obtain, for each PSS initial position, the cell identifier of the same frequency cell configuring the target beam and the first position of the SSS sequence in the second data and the first network detection result for the target beam according to the second data and the reference PSS sequence, and obtain the second network detection result for the target beam according to the third data and the cell identifier;

[0432] Among them, the second data is: the data determined according to the initial position of PSS in the first data, the third data is: the data determined according to the first position in the first data, and the target beam is: the beam corresponding to the initial position of PSS.

[0433] From the above, it can be seen that through the scheme provided by the embodiment of the present invention, the initial position of the PSS corresponding to each beam configured in the same-frequency cell can be determined first according to the reference PSS sequence, and then the cell identifier of the same-frequency cell configured with each beam is determined on the basis of the initial position of the PSS, thereby identifying each same-frequency cell of the base station. Then, on the basis of identifying each same-frequency cell, the first network detection result and the second network detection result of each beam configured in the same-frequency cell are determined respectively, thereby completing the network detection process. Therefore, in the case where the base station configures multiple beams for each cell, compared with the method of performing network detection on a single-beam base station, the scheme provided by the embodiment of the present invention can perform network detection on different beams configured in the same-frequency cell respectively, so the scheme provided by the embodiment of the present invention can perform network detection on the base station configured with multiple beams for each cell.

[0434] It should be noted that the division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into a processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0435] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program code.

[0436] In another embodiment of the present invention, a computer-readable storage medium is provided, in which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above network detection methods are implemented.

[0437] When the computer-readable storage medium provided by the embodiment of the present invention is used for network detection, the scheme provided by the embodiment of the present invention can first determine the initial PSS position corresponding to each beam configured in the same-frequency cell according to the reference PSS sequence, and then determine the cell identifier of the same-frequency cell configured with each beam on the basis of the initial PSS position, thereby identifying each same-frequency cell of the base station. Then, on the basis of identifying each same-frequency cell, the first network detection result and the second network detection result of each beam configured in the same-frequency cell are determined respectively, thereby completing the network detection process. Therefore, in the case where the base station configures multiple beams for each cell, compared with the method of performing network detection on a single-beam base station, the scheme provided by the embodiment of the present invention can perform network detection on different beams configured in the same-frequency cell respectively, so the scheme provided by the embodiment of the present invention can perform network detection on base stations configured with multiple beams for each cell.

[0438] In another embodiment of the present invention, a computer program product including instructions is provided. When the computer program product is run on a computer, the computer executes any one of the network detection methods in the above embodiments.

[0439] When the computer program product provided by the embodiment of the present invention is used to perform network detection, the scheme provided by the embodiment of the present invention can first determine the PSS initial position corresponding to each beam configured in the same-frequency cell according to the reference PSS sequence, and then determine the cell identifier of the same-frequency cell configured with each beam based on the PSS initial position, thereby identifying each same-frequency cell of the base station. Then, on the basis of identifying each same-frequency cell, the first network detection result and the second network detection result of each beam configured in the same-frequency cell are determined respectively, thereby completing the network detection process. Therefore, in the case where the base station configures multiple beams for each cell, compared with the method of performing network detection on a single-beam base station, the scheme provided by the embodiment of the present invention can perform network detection on different beams configured in the same-frequency cell respectively, so the scheme provided by the embodiment of the present invention can perform network detection on base stations configured with multiple beams for each cell.

[0440] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk Solid State Disk (SSD)), etc.

[0441] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0442] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, base station, storage medium and computer program embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0443] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0444] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0445] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0446] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0447] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the embodiments of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A network detection method, characterized in that: The method comprises: Obtaining first data for network detection according to a signal transmitted by a base station in a same-frequency cell; Based on a preset reference PSS sequence, determining, in the first data, a PSS initial position corresponding to each beam configured in the same-frequency cell; For each PSS initial position, according to the second data and the reference PSS sequence, obtain the cell identifier of the same-frequency cell configuring the target beam and the first position of the secondary synchronization signal SSS sequence in the second data and the first network detection result for the target beam, and generate a reference demodulation reference signal DM-RS sequence according to the cell identifier; based on the reference DM-RS sequence, determine the SSB identifier of the synchronization information block SSB in the third data; based on the target reference DM-RS sequence representing the SSB identifier and the third data, obtain the second network detection result corresponding to the SSB represented by the SSB identifier as the second network detection result for the target beam; based on the target reference DM-RS sequence, perform time domain interference elimination on the DM-RS for the third data, and return to execute the step of determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence until the SSB identifier fails to be determined; Among them, the second data is: the data determined according to the initial position of PSS in the first data, the third data is: the data determined according to the first position in the first data, and the target beam is: the beam corresponding to the initial position of PSS.

2. The method according to claim 1, characterized in that The obtaining, according to the second data and the reference PSS sequence, a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam, comprising: Based on the reference PSS sequence, determine a second position of the PSS sequence in the second data, and determine an intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs; performing time domain interference elimination for PSS on the second data; Based on the second position, determining a first position of an SSS sequence in the second data; Determine, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which a same-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam; Determine, according to the cell group identifier and the intra-group identifier, a cell identifier of a co-frequency cell in which a target beam is configured, and perform time domain interference elimination for the SSS on the second data; If the number of determined cell identifiers is less than or equal to the preset number, return to execute the step of determining, according to the preset reference SSS sequence and the second data, the cell group identifier of the cell group of the same-frequency cell identified by the SSS sequence in the second data and the first network detection result for the target beam; Otherwise, return to the step of determining the second position of the PSS sequence in the second data based on the reference PSS sequence, and determining the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, until determining the intra-group identifier fails.

3. The method according to claim 2, characterized in that The determining, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which an intra-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam includes: According to the fourth data and the preset reference SSS sequence, determine the candidate cell group identifier of the cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs, and calculate the first reference channel received power RSRP of the intra-frequency cell configured with the target beam, wherein the initial value of the fourth data is: the second data; According to the intra-group identifier and the candidate cell group identifier, perform time domain interference elimination for the SSS on the fourth data, and return to the step of determining the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence belongs according to the fourth data and the preset reference SSS sequence, until determining the candidate cell group identifier fails; The candidate cell group identifier corresponding to the maximum first RSRP is determined as the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence in the second data belongs, and based on the maximum first RSRP, the first network detection result for the target beam is calculated.

4. The method according to claim 3, characterized in that The determining, according to the fourth data and a preset reference SSS sequence, a candidate cell group identifier of a cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs includes: Determine, from the fourth data, fifth data for determining a cell group identifier according to a first mapping relationship between the SSS and the signal; Calculating a peak-to-average ratio between the fifth data and the reference SSS sequence; If the calculated first maximum peak-to-average ratio is greater than the first preset peak-to-average ratio, the cell group identifier represented by the target reference SSS sequence used when calculating the first maximum peak-to-average ratio is used as the alternative cell group identifier represented by the SSS sequence in the second data.

5. The method according to claim 3, characterized in that: The calculating and configuring a first RSRP of a co-frequency cell of the target beam includes: Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier; Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence; A first RSRP is calculated according to the channel estimation matrix.

6. The method according to claim 3, characterized in that The performing time domain interference elimination on the SSS on the fourth data includes: Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier; Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence; Calculate and obtain a first reconstructed signal according to the channel estimation matrix and the SSS sequence; The fourth data is subjected to time domain interference elimination for SSS based on the first reconstructed signal.

7. The method according to claim 2, characterized in that The determining, based on the reference PSS sequence, a second position of the PSS sequence in the second data, and determining an intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, includes: Calculating a peak-to-average ratio between each data segment in the second data and the reference PSS sequence; If the calculated second maximum peak-to-average ratio is greater than the second preset peak-to-average ratio, determining the position of the data segment for which the second maximum peak-to-average ratio is calculated in the second data as the second position of the PSS sequence in the second data; The intra-group identifier represented by the reference PSS sequence having the second maximum peak-to-average ratio calculated is determined as the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs.

8. The method according to claim 2, characterized in that: The performing time domain interference elimination on the second data for the PSS includes: Generate a PSS sequence according to the intra-group identifier; Calculate a channel estimation matrix based on the second data and the generated PSS sequence; Calculate and obtain a second reconstructed signal according to the channel estimation matrix and the PSS sequence; The second data is subjected to time domain interference elimination for the PSS based on the second reconstructed signal.

9. The method according to claim 2, characterized in that: The performing time domain interference elimination on the second data for the SSS includes: Generate an SSS sequence according to the intra-group identifier and the cell group identifier; Calculate a channel estimation matrix based on the second data and the generated SSS sequence; Calculate and obtain a third reconstructed signal according to the channel estimation matrix and the SSS sequence; Time domain interference elimination for SSS is performed on the second data based on the third reconstructed signal.

10. The method according to claim 1, characterized in that The determining, based on the reference DM-RS sequence, an SSB identifier of an SSB in the third data includes: Determine sixth data from the third data according to a second mapping relationship between the DM-RS and the signal; Calculating a peak-to-average ratio between the sixth data and the reference DM-RS sequence; If the calculated third maximum peak-to-average ratio is greater than the third preset peak-to-average ratio, the SSB identifier represented by the reference DM-RS sequence used when calculating the third maximum peak-to-average ratio is determined as the SSB identifier of the SSB in the third data.

11. The method according to claim 1, characterized in that: The obtaining, based on the target reference DM-RS sequence representing the SSB identifier and the third data, a second network detection result corresponding to the SSB represented by the SSB identifier includes: Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated; Based on the channel estimation matrix, a second RSRP and / or signal to interference and noise ratio is calculated as a second network detection result corresponding to the SSB represented by the SSB identifier.

12. The method according to claim 1, characterized in that The performing time domain interference elimination for DM-RS on the third data based on the target reference DM-RS sequence includes: Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated; Calculating a fourth reconstructed signal according to the channel estimation matrix and the target reference DM-RS sequence; Time domain interference elimination for DM-RS is performed on the third data based on the fourth reconstructed signal.

13. The method according to any one of claims 1 to 9, characterized in that The determining, based on a preset reference PSS sequence, in the first data, a PSS initial position corresponding to each beam configured in the same-frequency cell, includes: Calculating a peak-to-average ratio between each data segment in the first data and the reference PSS sequence; Determine the position of the first data of at most a preset maximum number of data segments with the largest peak-to-average ratio and greater than a fourth preset peak-to-average ratio as the initial position of the PSS.

14. A network detection device, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Obtaining first data for network detection according to a signal transmitted by a base station in a same-frequency cell; Based on a preset reference PSS sequence, determining, in the first data, a PSS initial position corresponding to each beam configured in the same-frequency cell; For each PSS initial position, according to the second data and the reference PSS sequence, obtain a cell identifier of a co-frequency cell configuring a target beam, a first position of an SS sequence in the second data, and a first network detection result for the target beam, and generate a reference demodulation reference signal DM-RS sequence according to the cell identifier; Determine, based on the reference DM-RS sequence, an SSB identifier of a synchronization information block SSB in the third data; Based on the target reference DM-RS sequence representing the SSB identifier and the third data, obtaining a second network detection result corresponding to the SSB represented by the SSB identifier as the second network detection result for the target beam; Based on the target reference DM-RS sequence, perform time domain interference elimination for DM-RS on the third data, and return to the step of determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence until determining that the SSB identifier fails; Among them, the second data is: the data determined according to the initial position of PSS in the first data, the third data is: the data determined according to the first position in the first data, and the target beam is: the beam corresponding to the initial position of PSS.

15. The network detection device according to claim 14, characterized in that: The obtaining, according to the second data and the reference PSS sequence, a cell identifier of a co-frequency cell configuring a target beam, a first position of an SSS sequence in the second data, and a first network detection result for the target beam specifically includes: Based on the reference PSS sequence, determine a second position of the PSS sequence in the second data, and determine an intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs; performing time domain interference elimination for PSS on the second data; Based on the second position, determining a first position of an SSS sequence in the second data; Determine, according to a preset reference SSS sequence and the second data, a cell group identifier of a cell group to which a same-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam; Determine, according to the cell group identifier and the intra-group identifier, a cell identifier of a co-frequency cell in which a target beam is configured, and perform time domain interference elimination for the SSS on the second data; If the number of determined cell identifiers is less than or equal to the preset number, return to execute the step of determining, according to the preset reference SSS sequence and the second data, the cell group identifier of the cell group of the same-frequency cell identified by the SSS sequence in the second data and the first network detection result for the target beam; Otherwise, return to the step of determining the second position of the PSS sequence in the second data based on the reference PSS sequence, and determining the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs, until determining the intra-group identifier fails.

16. The network detection device according to claim 15, characterized in that: The determining, according to the preset reference SSS sequence and the second data, a cell group identifier of a cell group to which the same-frequency cell represented by the SSS sequence in the second data belongs and a first network detection result for the target beam specifically includes: According to the fourth data and the preset reference SSS sequence, determine the candidate cell group identifier of the cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs, and calculate the first RSRP of the intra-frequency cell configured with the target beam, wherein the initial value of the fourth data is: the second data; According to the intra-group identifier and the candidate cell group identifier, perform time domain interference elimination for the SSS on the fourth data, and return to the step of determining the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence belongs according to the fourth data and the preset reference SSS sequence, until determining the candidate cell group identifier fails; The candidate cell group identifier corresponding to the maximum first RSRP is determined as the cell group identifier of the cell group to which the same-frequency cell represented by the SSS sequence in the second data belongs, and based on the maximum first RSRP, the first network detection result for the target beam is calculated.

17. The network detection device according to claim 16, characterized in that: The determining, according to the fourth data and a preset reference SSS sequence, a candidate cell group identifier of a cell group to which the intra-frequency cell represented by the SSS sequence in the second data belongs specifically includes: Determine, from the fourth data, fifth data for determining a cell group identifier according to a first mapping relationship between the SSS and the signal; Calculating a peak-to-average ratio between the fifth data and the reference SSS sequence; If the calculated first maximum peak-to-average ratio is greater than the first preset peak-to-average ratio, the cell group identifier represented by the target reference SSS sequence used when calculating the first maximum peak-to-average ratio is used as the alternative cell group identifier represented by the SSS sequence in the second data.

18. The network detection device according to claim 16, characterized in that: The calculating a first RSRP of a co-frequency cell configuring the target beam specifically includes: Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier; Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence; A first RSRP is calculated according to the channel estimation matrix.

19. The network detection device according to claim 16, characterized in that: The performing time domain interference elimination on the SSS on the fourth data specifically includes: Generate an SSS sequence according to the intra-group identifier and the candidate cell group identifier; Calculate a channel estimation matrix based on the fourth data and the generated SSS sequence; Calculate and obtain a first reconstructed signal according to the channel estimation matrix and the SSS sequence; The fourth data is subjected to time domain interference elimination for SSS based on the first reconstructed signal.

20. The network detection device according to claim 15, characterized in that: The determining, based on the reference PSS sequence, a second position of the PSS sequence in the second data, and determining an intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs specifically includes: Calculating a peak-to-average ratio between each data segment in the second data and the reference PSS sequence; If the calculated second maximum peak-to-average ratio is greater than the second preset peak-to-average ratio, determining the position of the data segment for which the second maximum peak-to-average ratio is calculated in the second data as the second position of the PSS sequence in the second data; The intra-group identifier represented by the reference PSS sequence having the second maximum peak-to-average ratio calculated is determined as the intra-group identifier of the same-frequency cell represented by the PSS sequence in the second data in the cell group to which it belongs.

21. The network detection device according to claim 15, characterized in that: The performing time domain interference elimination on the second data for the PSS specifically includes: Generate a PSS sequence according to the intra-group identifier; Calculate a channel estimation matrix based on the second data and the generated PSS sequence; Calculate and obtain a second reconstructed signal according to the channel estimation matrix and the PSS sequence; The second data is subjected to time domain interference elimination for the PSS based on the second reconstructed signal.

22. The network detection device according to claim 15, characterized in that: The performing time domain interference elimination on the SSS on the second data specifically includes: Generate an SSS sequence according to the intra-group identifier and the cell group identifier; Calculate a channel estimation matrix based on the second data and the generated SSS sequence; Calculate and obtain a third reconstructed signal according to the channel estimation matrix and the SSS sequence; Time domain interference elimination for SSS is performed on the second data based on the third reconstructed signal.

23. The network detection device according to claim 14, characterized in that: The determining, based on the reference DM-RS sequence, an SSB identifier of an SSB in the third data specifically includes: Determine sixth data from the third data according to a second mapping relationship between the DM-RS and the signal; Calculating a peak-to-average ratio between the sixth data and the reference DM-RS sequence; If the calculated third maximum peak-to-average ratio is greater than the third preset peak-to-average ratio, the SSB identifier represented by the reference DM-RS sequence used when calculating the third maximum peak-to-average ratio is determined as the SSB identifier of the SSB in the third data.

24. The network detection device according to claim 14, characterized in that: The obtaining, based on the target reference DM-RS sequence representing the SSB identifier and the third data, a second network detection result corresponding to the SSB represented by the SSB identifier specifically includes: Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated; Based on the channel estimation matrix, a second RSRP and / or signal to interference and noise ratio is calculated as a second network detection result corresponding to the SSB represented by the SSB identifier.

25. The network detection device according to claim 14, characterized in that: The performing time domain interference elimination for DM-RS on the third data based on the target reference DM-RS sequence specifically includes: Based on the target reference DM-RS sequence and the third data, a channel estimation matrix is ​​calculated; Calculating a fourth reconstructed signal according to the channel estimation matrix and the target reference DM-RS sequence; Time domain interference elimination for DM-RS is performed on the third data based on the fourth reconstructed signal.

26. The network detection device according to any one of claims 14 to 22, characterized in that: The determining, based on a preset reference PSS sequence, in the first data, a PSS initial position corresponding to each beam configured in the same-frequency cell specifically includes: Calculating a peak-to-average ratio between each data segment in the first data and the reference PSS sequence; Determine the position of the first data of at most a preset maximum number of data segments with the largest peak-to-average ratio and greater than a fourth preset peak-to-average ratio as the initial position of the PSS.

27. A network detection device, characterized in that: The device comprises: A data acquisition module, used to obtain first data for network detection according to a signal transmitted by a base station in a same-frequency cell; An initial position determination module, configured to determine, in the first data, a PSS initial position corresponding to each beam configured in the same frequency cell based on a preset reference PSS sequence; A detection result acquisition module is used to obtain, for each PSS initial position, a cell identifier of a co-frequency cell configuring a target beam and a first position of an SSS sequence in the second data and a first network detection result for the target beam according to the second data and the reference PSS sequence, and generate a reference demodulation reference signal DM-RS sequence according to the cell identifier; determine an SSB identifier of a synchronization information block SSB in the third data based on the reference DM-RS sequence; obtain a second network detection result corresponding to an SSB represented by the SSB identifier based on a target reference DM-RS sequence representing the SSB identifier and the third data as a second network detection result for the target beam; perform time domain interference elimination on the DM-RS for the third data based on the target reference DM-RS sequence, and return to execute the step of determining the SSB identifier of the SSB in the third data based on the reference DM-RS sequence until the SSB identifier fails to be determined; Among them, the second data is: the data determined according to the initial position of PSS in the first data, the third data is: the data determined according to the first position in the first data, and the target beam is: the beam corresponding to the initial position of PSS.

28. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of claims 1 to 13 are implemented.

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