Channel dynamic selection method and device for secondary synchronization signal, and electronic equipment

Abstract

The invention provides a channel dynamic selection method and device for an auxiliary synchronization signal and electronic equipment, and the method comprises the steps: screening a global synchronization channel with the minimum interference power in a preset target frequency range, and starting to transmit the auxiliary synchronization signal through the global synchronization channel; measuring the interference power corresponding to the global synchronization channel by taking a preset system frame length as a period, and obtaining a channel quality mark corresponding to each sub-band; determining the average interference power corresponding to the global synchronization channel, and screening an updated global synchronization channel with the minimum average interference power and the maximum minimum value of the channel quality mark of the sub-band; and when the updated global synchronization channel is different from the current global synchronization channel, switching to the updated global synchronization channel to send the auxiliary synchronization signal. Dynamic selection of the SSB channel position can be realized in the NR system, so that the signal anti-interference capability is improved, the terminal access success rate is improved, and the cell coverage range is expanded.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method, device and electronic device for dynamically selecting a channel of a secondary synchronization signal. Background Art

[0002] NR (New Radio) is a 5G mobile communication system technical standard developed by 3GPP (The 3rd Generation Partnership Project) to meet the requirements of higher transmission rates, greater connection density and lower latency. In the NR system, the synchronization signal block (SSB) is an important signal transmitted by the base station to the user equipment (UE), including the primary synchronization signal (PSS), the secondary synchronization signal (SSS) and the physical broadcast channel (PBCH). The function of the SSB signal is to help the UE complete initial synchronization, decode system information and establish a connection.

[0003] In the prior art, base stations usually use a fixed global synchronization channel number (GSCN) to send SSB signals during operation. GSCN is a number based on the frequency grid, which specifies the transmission position of the SSB channel within the frequency range. However, this fixed configuration method has the following problems in complex wireless environments: Insufficient anti-interference capability: In scenarios with high-density deployment or dynamic changes in interference, the SSB channel is easily interfered by the signals of adjacent cells, resulting in signal demodulation failure and the UE cannot access the base station. Limited coverage: The fixed SSB channel position is difficult to adapt to dynamic environmental changes, which may cause the cell coverage to not meet expectations. Low resource utilization: The fixed configured SSB channel position cannot be dynamically adjusted according to real-time interference and channel quality, and the frequency resources within the cell are not fully utilized. Summary of the invention

[0004] The embodiments of the present disclosure at least provide a method, device and electronic device for dynamic channel selection of a secondary synchronization signal, which can realize dynamic selection of the SSB channel position in the NR system to improve the signal anti-interference capability, increase the terminal access success rate and expand the cell coverage.

[0005] The present disclosure provides a method for dynamically selecting a channel of a secondary synchronization signal, including:

[0006] Select a global synchronization channel with minimum interference power within a preset target frequency range, and start sending a secondary synchronization signal using the global synchronization channel;

[0007] Taking a preset system frame length as a period, measuring the interference power corresponding to the global synchronization channel, and obtaining a channel quality indicator corresponding to each subband;

[0008] Determine the average interference power corresponding to the global synchronization channel, and select an updated global synchronization channel having the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband;

[0009] When the updated global synchronization channel is different from the current global synchronization channel, the updated global synchronization channel is switched to send the secondary synchronization signal.

[0010] In an optional implementation manner, selecting a global synchronization channel with minimum interference power within a preset target frequency range, and starting to send a secondary synchronization signal using the global synchronization channel, specifically includes:

[0011] When the base station is powered on, measuring the interference power received within the preset target frequency range;

[0012] Calculate the interference power corresponding to each of the global synchronization channels using a sliding window according to the frequency grid corresponding to the global synchronization channel;

[0013] The global synchronization channels corresponding to a plurality of resource blocks having the minimum interference power are selected as initial selections to send the secondary synchronization signal.

[0014] In an optional implementation manner, measuring the interference power corresponding to the global synchronization channel within a preset sampling duration at each preset interval period, and obtaining a channel quality indicator corresponding to each subband, specifically includes:

[0015] During the operation of the base station, a timer with a period of the preset system frame length is started;

[0016] During the operation of the timer, continuously measuring the interference power of the current global synchronization channel according to a preset transmission time interval;

[0017] Decoding the signaling information reported by the user terminal, and extracting the channel quality indicator corresponding to each subband from the signaling information;

[0018] The measured interference power and the resolved channel quality indicator are saved.

[0019] In an optional implementation manner, determining the average interference power corresponding to the global synchronization channel, and selecting an updated global synchronization channel having the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband, specifically includes:

[0020] After the timer times out, determining the average interference power of each of the global synchronization channels within the preset system frame length according to the stored average value corresponding to the interference power;

[0021] Determining a minimum value of the channel quality indicator corresponding to each subband;

[0022] The global synchronization channel satisfying the minimum average interference power and the maximum minimum value of the channel quality indicator is selected as the updated global synchronization channel.

[0023] In an optional implementation manner, when the updated global synchronization channel is different from the current global synchronization channel, switching to the updated global synchronization channel to send the secondary synchronization signal specifically includes:

[0024] Determining whether the updated global synchronization channel is consistent with the global synchronization channel currently sending the secondary synchronization signal;

[0025] If they are inconsistent, channel update information is sent to the user terminal through a system information block to notify the user terminal to switch to the updated global synchronization channel in a specified frame.

[0026] The embodiment of the present disclosure further provides a device for dynamically selecting a channel of a secondary synchronization signal, including:

[0027] A preliminary channel determination module, used for selecting a global synchronization channel with minimum interference power within a preset target frequency range, and starting to send a secondary synchronization signal with the global synchronization channel;

[0028] An interference rate monitoring module, used to measure the interference power corresponding to the global synchronization channel with a preset system frame length as a period, and obtain a channel quality indicator corresponding to each subband;

[0029] A channel updating module, used for determining an average interference power corresponding to the global synchronization channel, and screening an updated global synchronization channel having the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband;

[0030] The channel switching module is used to switch to the updated global synchronization channel to send the secondary synchronization signal when the updated global synchronization channel is different from the current global synchronization channel.

[0031] In an optional implementation manner, the preliminary channel determination module is specifically used to:

[0032] When the base station is powered on, measuring the interference power received within the preset target frequency range;

[0033] Calculate the interference power corresponding to each of the global synchronization channels using a sliding window according to the frequency grid corresponding to the global synchronization channel;

[0034] The global synchronization channels corresponding to a plurality of resource blocks having the minimum interference power are selected as initial selections to send the secondary synchronization signal.

[0035] In an optional implementation manner, the interference rate monitoring module is specifically used for:

[0036] During the operation of the base station, a timer with a period of the preset system frame length is started;

[0037] During the operation of the timer, continuously measuring the interference power of the current global synchronization channel according to a preset transmission time interval;

[0038] Decoding the signaling information reported by the user terminal, and extracting the channel quality indicator corresponding to each subband from the signaling information;

[0039] The measured interference power and the resolved channel quality indicator are saved.

[0040] An embodiment of the present disclosure also provides an electronic device, including: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and when the machine-readable instructions are executed by the processor, the above-mentioned dynamic channel selection method for the auxiliary synchronization signal is executed, or steps in any possible implementation manner of the above-mentioned dynamic channel selection method for the auxiliary synchronization signal are executed.

[0041] An embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the computer program executes the above-mentioned method for dynamic channel selection of a secondary synchronization signal, or steps in any possible implementation manner of the above-mentioned method for dynamic channel selection of a secondary synchronization signal.

[0042] The embodiments of the present disclosure also provide a computer program product, including a computer program / instruction, which, when executed by a processor, implements the above-mentioned method for dynamic channel selection of auxiliary synchronization signals, or the steps in any possible implementation of the above-mentioned method for dynamic channel selection of auxiliary synchronization signals.

[0043] The embodiments of the present disclosure provide a method, device and electronic device for dynamically selecting a channel for an auxiliary synchronization signal, which selects a global synchronization channel with the minimum interference power within a preset target frequency range, and starts sending the auxiliary synchronization signal with the global synchronization channel; measures the interference power corresponding to the global synchronization channel with a preset system frame length as a period, and obtains the channel quality indicator corresponding to each subband; determines the average interference power corresponding to the global synchronization channel, and selects an updated global synchronization channel with the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband; when the updated global synchronization channel is different from the current global synchronization channel, switches to the updated global synchronization channel to send the auxiliary synchronization signal. The dynamic selection of the SSB channel position can be implemented in the NR system to improve the signal anti-interference capability, increase the terminal access success rate and expand the cell coverage.

[0044] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used together with the specification to illustrate the technical solutions of the present disclosure. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0046] Figure 1 A flow chart of a method for dynamically selecting a channel of a secondary synchronization signal provided by an embodiment of the present disclosure is shown;

[0047] Figure 2 A flow chart showing another method for dynamically selecting a channel of a secondary synchronization signal provided by an embodiment of the present disclosure is shown;

[0048] Figure 3 A schematic diagram showing a channel dynamic selection device for a secondary synchronization signal provided by an embodiment of the present disclosure;

[0049] Figure 4 A schematic diagram of an electronic device provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure for protection, but merely represents the selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.

[0051] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0052] The term "and / or" herein only describes an association relationship, indicating that three relationships may exist. For example, A and / or B may represent the following three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C may represent including any one or more elements selected from the set consisting of A, B, and C.

[0053] After research, it was found that in the prior art, base stations usually use a fixed global synchronization channel number (GSCN) to send SSB signals during operation. GSCN is a number based on the frequency grid, which specifies the transmission position of the SSB channel within the frequency range. However, this fixed configuration method has the following problems in complex wireless environments: Insufficient anti-interference ability: In scenarios with high-density deployment or dynamic changes in interference, the SSB channel is easily interfered by the signals of adjacent cells, resulting in signal demodulation failure and the UE cannot access the base station. Limited coverage: The fixed SSB channel position is difficult to adapt to dynamic environmental changes, which may cause the cell coverage to not meet expectations. Low resource utilization: The fixed configured SSB channel position cannot be dynamically adjusted according to real-time interference and channel quality, and the frequency resources in the cell are not fully utilized.

[0054] Based on the above research, the present disclosure provides a method, device and electronic device for dynamic channel selection of auxiliary synchronization signals, by screening a global synchronization channel with the minimum interference power within a preset target frequency range, and starting to send auxiliary synchronization signals with the global synchronization channel; measuring the interference power corresponding to the global synchronization channel with a preset system frame length as a period, and obtaining the channel quality indicator corresponding to each subband; determining the average interference power corresponding to the global synchronization channel, screening an updated global synchronization channel with the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband; when the updated global synchronization channel is different from the current global synchronization channel, switching to the updated global synchronization channel to send the auxiliary synchronization signal. The dynamic selection of the SSB channel position can be realized in the NR system to improve the signal anti-interference capability, improve the terminal access success rate and expand the cell coverage.

[0055] To facilitate understanding of this embodiment, a method for dynamically selecting a channel of a secondary synchronization signal disclosed in an embodiment of the present disclosure is first introduced in detail. The execution subject of the method for dynamically selecting a channel of a secondary synchronization signal provided in an embodiment of the present disclosure is generally a computer device with certain computing capabilities, and the computer device includes, for example: a terminal device or a server or other processing device, and the terminal device may be a user equipment (UE), a mobile device, a user terminal, a terminal, a cellular phone, a cordless phone, a personal digital assistant (PDA), a handheld device, a computing device, a vehicle-mounted device, a wearable device, etc. In some possible implementations, the method for dynamically selecting a channel of a secondary synchronization signal may be implemented by a processor calling a computer-readable instruction stored in a memory.

[0056] See also Figure 1 As shown, it is a flow chart of a method for dynamically selecting a channel of a secondary synchronization signal provided by an embodiment of the present disclosure, the method comprising steps S101 to S104, wherein:

[0057] S101. Select a global synchronization channel with minimum interference power within a preset target frequency range, and start sending a secondary synchronization signal using the global synchronization channel.

[0058] In specific implementation, the Global Synchronization Channel (GSCN) is a number used to identify the frequency position of the synchronization signal block (SSB) in the NR (New Radio) system, which directly determines the specific frequency at which the base station sends the synchronization signal. The SSB signal includes the primary synchronization signal (PSS), the secondary synchronization signal (SSS) and the physical broadcast channel (PBCH), which is the basis for the UE to complete network access. When the system is started or running, in order to ensure that the SSB signal can be effectively transmitted, the base station needs to select a GSCN with the minimum interference power within the preset target frequency range to avoid demodulation failure due to signal interference.

[0059] Here, the target frequency range of the base station is specified by the system operator or the NR protocol, which is usually the working frequency band (such as the frequency carrier range) allocated by the cell. For example, the frequency band is 100MHz, which is divided into several GSCNs, and each GSCN corresponds to a fixed frequency position.

[0060] Specifically, when the base station is turned on, the received interference power is measured within a preset target frequency range; based on the frequency grid corresponding to the global synchronization channel, a sliding window is used to calculate the interference power corresponding to each global synchronization channel; and the global synchronization channels corresponding to multiple resource blocks with the smallest interference power are selected as the initial selection for sending auxiliary synchronization signals.

[0061] Here, based on the NR protocol, the target frequency range is divided into multiple candidate GSCNs according to the frequency grid, and each GSCN is separated by a fixed frequency step. For example, the interval between GSCNs is 3.6MHz (high frequency band) or 1.2MHz (low frequency band).

[0062] Furthermore, when the system is started, the base station starts the RF receiving module and scans all GSCN positions within the target frequency range. The base station measures the interference power at each GSCN position to calculate the interference power, and uses the sliding window technology to average the interference power of each GSCN within the time window to eliminate the impact of short-term fluctuations.

[0063] Here, the base station sorts the interference power calculation results of all GSCNs and selects the GSCN with the smallest interference power. The selected GSCN is recorded and used as the SSB transmission channel of the current cell. The SSB signal block is sent at the selected GSCN position, including: the primary synchronization signal (PSS) for time synchronization. The secondary synchronization signal (SSS) is used for frame synchronization and cell identification. The physical broadcast channel (PBCH) is used to transmit system information.

[0064] S102: Measure the interference power corresponding to the global synchronization channel with a preset system frame length as a period, and obtain a channel quality indicator corresponding to each subband.

[0065] In the specific implementation, in the NR system, the system frame is the basic time unit, each frame contains 10 subframes, and each subframe is further divided into multiple time slots. The frame length is 10 milliseconds and the subframe is 1 millisecond. Set one or more system frames as the measurement period (such as 10 frames as 1 period, i.e. 100 milliseconds), and the base station completes the measurement of interference power and the acquisition of channel quality indicator (CQI) in each period.

[0066] Here, the base station operating frequency range is divided into multiple global synchronization channels (GSCN). Each GSCN consists of multiple resource blocks (RBs), depending on the frequency band and carrier bandwidth configuration. The signal on the target GSCN is received in each time slot, the interference power of each RB is measured, and all time slots in each system frame are accumulated to obtain the average received power of each RB. The received power of all RBs in the target GSCN is summed and normalized to calculate the overall interference power of the GSCN.

[0067] Among them, CQI (Channel Quality Indicator) is the channel state information fed back by the UE to the base station, which is used to characterize the channel quality perceived by the UE. The higher the CQI value, the better the channel condition. In the NR system, the operating frequency range is further divided into multiple sub-bands. Each sub-band covers a group of RBs, which usually corresponds to the smallest unit of UE feedback. The UE obtains the channel gain and noise ratio (SNR) by measuring the pilot signal (such as SSB or DMRS). According to the mapping rules of the NR protocol, the SNR value is quantized into a CQI value. The CQI value range is usually 0 to 15. Low values ​​(such as 0-7) represent poor channel conditions, and low modulation orders and low coding rates are recommended. High values ​​(such as 8-15) represent good channel conditions, and high modulation orders and high coding rates are recommended.

[0068] Specifically, during the operation of the base station, a timer with a period of a preset system frame length is started; while the timer is running, the interference power of the current global synchronization channel is continuously measured according to a preset transmission time interval; the signaling information reported by the user end is decoded, and the channel quality indicator corresponding to each subband is extracted from the signaling information; the measured interference power and the resolved channel quality indicator are saved.

[0069] In a specific implementation, during operation, the base station starts a periodic timer with a period equal to the preset system frame length. For example, a period can be 10 system frames (100 milliseconds). The timer periodically triggers the measurement task and performs related operations in each transmission time interval (TTI, usually 1 millisecond). The RF receiving module monitors the frequency position of the current GSCN, collects the received signal, calculates the power of the received signal, including the target signal power and the noise power, measures the received power of each resource block (RB) of the current GSCN in each TTI, and calculates the interference power of each RB.

[0070] Here, the UE reports signaling information to the base station through the uplink physical shared channel (PUSCH) or physical control channel (PUCCH). The signaling information includes the channel quality indicator (CQI) of each subband. The signaling parsing module of the base station decodes the signaling message reported by the UE and extracts the CQI value corresponding to each subband.

[0071] Afterwards, the interference power measurement value of each TTI of the current GSCN within the timer period and the CQI value of each subband parsed from the signaling information are saved.

[0072] S103: Determine an average interference power corresponding to the global synchronization channel, and select an updated global synchronization channel having the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband.

[0073] In a specific implementation, the base station measures the interference power of the current GSCN in each transmission time interval (TTI), sums the interference power of all resource blocks (RBs) in the GSCN, and averages the measurement results of each TTI within a timer period (e.g., 10 frames) to obtain the average interference power.

[0074] Here, the UE measures the SNR of each subband based on the pilot signal (such as SSB signal) received from the base station and quantizes it into a CQI value. The minimum value of the subband CQI represents the lower limit of the channel quality in the GSCN and can reflect the communication capability of the worst subband. Among all candidate GSCNs, find the GSCN that meets the following two conditions: the average interference power is the smallest and the CQI minimum value is the largest.

[0075] See also Figure 2 As shown, it is a flowchart of another method for dynamic channel selection of a secondary synchronization signal provided by an embodiment of the present disclosure, the method includes steps S1031 to S1033, wherein:

[0076] S1031. After the timer times out, determine the average interference power of each global synchronization channel within the preset system frame length according to the stored average value corresponding to the interference power.

[0077] S1032: Determine a minimum value of the channel quality indicator corresponding to each subband.

[0078] S1033: Filter the global synchronization channel that satisfies the minimum average interference power and the maximum minimum value of the channel quality indicator as the updated global synchronization channel.

[0079] In the specific implementation, within the timer period (such as 10 frames), the average value of all measurement results of each GSCN is calculated to reflect the overall level of interference. The resource blocks in each GSCN are accumulated to obtain the total interference power at each measurement moment. The frequency band of GSCN is further divided into several sub-bands, each sub-band contains multiple RBs, and the minimum CQI value of each sub-band within the period is calculated.

[0080] Here, among all candidate GSCNs, the average interference powers of all GSCNs are sorted, and the GSCN with the smallest interference power is selected. If the interference powers of multiple GSCNs are the same, the minimum CQI values ​​of these GSCNs are compared, and the GSCN with the largest minimum CQI value is selected.

[0081] S104: When the updated global synchronization channel is different from the current global synchronization channel, switch to the updated global synchronization channel to send the secondary synchronization signal.

[0082] In a specific implementation, it is determined whether the updated global synchronization channel is consistent with the global synchronization channel currently sending the secondary synchronization signal; if inconsistent, channel update information is sent to the user end through the system information block to notify the user end to switch to the updated global synchronization channel in a specified frame.

[0083] Here, the current GSCN is compared with the updated GSCN. The current GSCN is the global synchronization channel number currently used to send SSB signals (including PSS, SSS, PBCH), and the updated GSCN is the new GSCN selected by the base station based on the results of measurement and analysis.

[0084] Furthermore, the updated GSCN configuration is broadcast to the user terminal (UE) via the system information block (SIB1). If the ssb-NextFrameGSCN field is included in SIB1, the UE switches to the new GSCN in the next frame. If the field is not included, the UE maintains the current GSCN.

[0085] Here, SIB is a broadcast message sent by the base station to the UE, which is used to transmit system configuration information. The SIB1 message may include updated GSCN configuration information of the next system frame (through the ss b-NextFrameGSCN field of the SIB1 message).

[0086] Here, in this solution, the ServingCellConfigCommonSIB field in the SIB1 message of the standard NR protocol is extended, and the ssb-HoppingStep description is added to instruct the UE to switch to the new GSCN in the specified frame. After detecting that the updated GSCN is inconsistent with the current GSCN, the protocol stack generates a SIB1 message containing ssb-NextFrameGSCN. The SIB1 message is broadcast periodically on the physical broadcast channel (PBCH), and all UEs within the coverage area can receive the message.

[0087] Among them, the UE receives the SIB1 message through PBCH and parses the ssb-NextFrameGSCN field. According to this field, the UE learns the new GSCN number to be switched to and the effective time of the switch, that is, the start time of the specified frame.

[0088] Specifically, before the SIB1 message takes effect, the UE continues to use the current GSCN to detect and decode the SSB signal. When the specified frame arrives, the UE switches the synchronization signal detection frequency to the new GSCN position and receives the SSB signal on the new GSCN.

[0089] It should be noted that when the base station generates the SIB1 message, it combines the system frame number (SFN) and subframe number to determine the effective frame of the new GSCN. The selection of the switching frame should ensure that the UE has enough time to receive and parse the SIB1 message and avoid communication interruption due to switching delay.

[0090] The embodiment of the present disclosure provides a method for dynamic channel selection of an auxiliary synchronization signal, which is to screen a global synchronization channel with the minimum interference power within a preset target frequency range, and start sending the auxiliary synchronization signal with the global synchronization channel; measure the interference power corresponding to the global synchronization channel with a preset system frame length as a period, and obtain the channel quality indicator corresponding to each subband; determine the average interference power corresponding to the global synchronization channel, screen the updated global synchronization channel with the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband; when the updated global synchronization channel is different from the current global synchronization channel, switch to the updated global synchronization channel to send the auxiliary synchronization signal. The dynamic selection of the SSB channel position can be implemented in the NR system to improve the signal anti-interference capability, improve the terminal access success rate and expand the cell coverage. Those skilled in the art can understand that in the above method of the specific implementation method, the writing order of each step does not mean a strict execution order and constitutes any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0091] Based on the same inventive concept, an embodiment of the present disclosure also provides a channel dynamic selection device for an auxiliary synchronization signal corresponding to the channel dynamic selection method for an auxiliary synchronization signal. Since the principle of solving the problem by the device in the embodiment of the present disclosure is similar to the above-mentioned channel dynamic selection method for an auxiliary synchronization signal in the embodiment of the present disclosure, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0092] See also Figure 3 , Figure 3 A schematic diagram of a channel dynamic selection device for a secondary synchronization signal provided by an embodiment of the present disclosure. Figure 3 As shown in the figure, the channel dynamic selection device 300 of the secondary synchronization signal provided by the embodiment of the present disclosure includes:

[0093] The preliminary channel determination module 310 is used to select a global synchronization channel with minimum interference power within a preset target frequency range, and start sending a secondary synchronization signal using the global synchronization channel.

[0094] The interference rate monitoring module 320 is used to measure the interference power corresponding to the global synchronization channel with a preset system frame length as a period, and obtain a channel quality indicator corresponding to each sub-band.

[0095] The channel updating module 330 is used to determine the average interference power corresponding to the global synchronization channel, and select the updated global synchronization channel with the minimum average interference power and the maximum minimum value of the channel quality indicator of the sub-band.

[0096] The channel switching module 340 is configured to switch to the updated global synchronization channel to send the secondary synchronization signal when the updated global synchronization channel is different from the current global synchronization channel.

[0097] For descriptions of the processing flow of each module in the device and the interaction flow between each module, reference may be made to the relevant descriptions in the above method embodiment, which will not be described in detail here.

[0098] The embodiment of the present disclosure provides a channel dynamic selection device for an auxiliary synchronization signal, which selects a global synchronization channel with the minimum interference power within a preset target frequency range, and starts sending the auxiliary synchronization signal with the global synchronization channel; measures the interference power corresponding to the global synchronization channel with a preset system frame length as a period, and obtains the channel quality indicator corresponding to each subband; determines the average interference power corresponding to the global synchronization channel, and selects an updated global synchronization channel with the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband; when the updated global synchronization channel is different from the current global synchronization channel, switches to the updated global synchronization channel to send the auxiliary synchronization signal. The dynamic selection of the SSB channel position can be implemented in the NR system to improve the signal anti-interference capability, improve the terminal access success rate and expand the cell coverage. Those skilled in the art can understand that in the above method of the specific implementation method, the writing order of each step does not mean a strict execution order and constitutes any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0099] Corresponds to Figure 1 The embodiment of the present disclosure also provides an electronic device 400, such as Figure 4 FIG. 4 is a schematic diagram of the structure of an electronic device 400 provided in an embodiment of the present disclosure, including:

[0100] Processor 41, memory 42, and bus 43; memory 42 is used to store execution instructions, including memory 421 and external memory 422; memory 421 here is also called internal memory, which is used to temporarily store operation data in processor 41 and data exchanged with external memory 422 such as hard disk. Processor 41 exchanges data with external memory 422 through memory 421. When the electronic device 400 is running, the processor 41 communicates with the memory 42 through bus 43, so that the processor 41 executes Figure 1 and Figure 2 The steps of the channel dynamic selection method of the auxiliary synchronization signal in.

[0101] The embodiment of the present disclosure also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method for dynamically selecting a channel for a secondary synchronization signal described in the above method embodiment are executed. The storage medium may be a volatile or non-volatile computer-readable storage medium.

[0102] The present disclosure also provides a computer program product, which includes computer instructions. When the computer instructions are executed by a processor, the steps of the channel dynamic selection method for the auxiliary synchronization signal described in the above method embodiment can be executed. For details, please refer to the above method embodiment, which will not be repeated here.

[0103] The computer program product may be implemented in hardware, software or a combination thereof. In one optional embodiment, the computer program product is implemented as a computer storage medium. In another optional embodiment, the computer program product is implemented as a software product, such as a software development kit (SDK).

[0104] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. In the several embodiments provided in the present disclosure, it should be understood that the disclosed device and method can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the device or unit can be electrical, mechanical or other forms.

[0105] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0106] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0107] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0108] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present disclosure, which are used to illustrate the technical solutions of the present disclosure, rather than to limit them. The protection scope of the present disclosure is not limited thereto. Although the present disclosure is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present disclosure, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A method for dynamically selecting a channel of a secondary synchronization signal, characterized in that: include: Select a global synchronization channel with minimum interference power within a preset target frequency range, and start sending a secondary synchronization signal using the global synchronization channel; Taking a preset system frame length as a period, measuring the interference power corresponding to the global synchronization channel, and obtaining a channel quality indicator corresponding to each subband; Determine the average interference power corresponding to the global synchronization channel, and select an updated global synchronization channel having the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband; When the updated global synchronization channel is different from the current global synchronization channel, the updated global synchronization channel is switched to send the secondary synchronization signal.

2. The method according to claim 1, characterized in that Selecting a global synchronization channel with minimum interference power within a preset target frequency range, and starting to send a secondary synchronization signal using the global synchronization channel, specifically includes: When the base station is powered on, measuring the interference power received within the preset target frequency range; Calculate the interference power corresponding to each of the global synchronization channels using a sliding window according to the frequency grid corresponding to the global synchronization channel; The global synchronization channels corresponding to a plurality of resource blocks having the minimum interference power are selected as initial selections to send the secondary synchronization signal.

3. The method according to claim 1, characterized in that Measuring the interference power corresponding to the global synchronization channel within a preset sampling duration at each preset interval period, and obtaining a channel quality indicator corresponding to each subband, specifically including: During the operation of the base station, a timer with a period of the preset system frame length is started; During the operation of the timer, continuously measuring the interference power of the current global synchronization channel according to a preset transmission time interval; Decoding the signaling information reported by the user terminal, and extracting the channel quality indicator corresponding to each subband from the signaling information; The measured interference power and the resolved channel quality indicator are saved.

4. The method according to claim 3, characterized in that Determining an average interference power corresponding to the global synchronization channel, and selecting an updated global synchronization channel having the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband, specifically includes: After the timer times out, determining the average interference power of each of the global synchronization channels within the preset system frame length according to the stored average value corresponding to the interference power; Determining a minimum value of the channel quality indicator corresponding to each subband; The global synchronization channel satisfying the minimum average interference power and the maximum minimum value of the channel quality indicator is selected as the updated global synchronization channel.

5. The method according to claim 1, characterized in that When the updated global synchronization channel is different from the current global synchronization channel, switching to the updated global synchronization channel to send the secondary synchronization signal specifically includes: Determining whether the updated global synchronization channel is consistent with the global synchronization channel currently sending the secondary synchronization signal; If they are inconsistent, channel update information is sent to the user terminal through a system information block to notify the user terminal to switch to the updated global synchronization channel in a specified frame.

6. A channel dynamic selection device for a secondary synchronization signal, characterized in that: include: A preliminary channel determination module, used for selecting a global synchronization channel with minimum interference power within a preset target frequency range, and starting to send a secondary synchronization signal with the global synchronization channel; An interference rate monitoring module, used to measure the interference power corresponding to the global synchronization channel with a preset system frame length as a period, and obtain a channel quality indicator corresponding to each subband; A channel updating module, used for determining an average interference power corresponding to the global synchronization channel, and screening an updated global synchronization channel having the minimum average interference power and the maximum minimum value of the channel quality indicator of the subband; The channel switching module is used to switch to the updated global synchronization channel to send the secondary synchronization signal when the updated global synchronization channel is different from the current global synchronization channel.

7. The device according to claim 6, characterized in that The preliminary channel determination module is specifically used for: When the base station is powered on, measuring the interference power received within the preset target frequency range; Calculate the interference power corresponding to each of the global synchronization channels using a sliding window according to the frequency grid corresponding to the global synchronization channel; The global synchronization channels corresponding to a plurality of resource blocks having the minimum interference power are selected as initial selections to send the secondary synchronization signal.

8. The device according to claim 6, characterized in that The interference rate monitoring module is specifically used for: During the operation of the base station, a timer with a period of the preset system frame length is started; During the operation of the timer, continuously measuring the interference power of the current global synchronization channel according to a preset transmission time interval; Decoding the signaling information reported by the user terminal, and extracting the channel quality indicator corresponding to each subband from the signaling information; The measured interference power and the resolved channel quality indicator are saved.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the steps of the channel dynamic selection method for the auxiliary synchronization signal as described in any one of claims 1 to 5 are performed.

10. 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 steps of the method for dynamically selecting a channel for a secondary synchronization signal as claimed in any one of claims 1 to 5 are executed.

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