Pre-synchronization processing methods, apparatus, electronic devices, and computer-readable storage media

Abstract

This application relates to a pre-synchronization processing method, apparatus, electronic device, storage medium, and computer program product. The method includes: in an idle state of discontinuous reception mode, receiving at least a portion of reference symbols in a pre-synchronization signal for a paging process, based on signal characteristic parameters corresponding to the pre-synchronization signal for the paging process; and performing pre-synchronization processing for the paging process based on the at least a portion of the reference symbols. This method can reduce the power consumption of the pre-synchronization processing.

Description

Technical Field

[0001] This application relates to the field of mobile communication technology, and in particular to a pre-synchronization processing method, apparatus, electronic device, computer-readable storage medium, and computer program product. Background Technology

[0002] In mobile communication systems, user electronic devices periodically enter sleep mode at certain times, avoiding listening to the downlink channel. They are then awakened from sleep mode when information from the downlink channel is needed, thus preventing the electronic device from constantly listening to the downlink channel. When waking from sleep mode, the electronic device needs to receive a pre-synchronization signal from the downlink channel to pre-synchronize the paging process, ensuring synchronization between the base station and the electronic device in the time and frequency domains. However, currently, the power consumption of receiving and performing pre-synchronization processing on the electronic device is relatively high. Summary of the Invention

[0003] This application provides a pre-synchronization processing method, apparatus, electronic device, computer-readable storage medium, and computer program product that can reduce the power consumption of pre-synchronization processing.

[0004] A pre-synchronization processing method, comprising:

[0005] In the idle state of discontinuous reception mode, at least a portion of the reference symbols in the pre-synchronization signal for the paging process are received according to the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process.

[0006] Pre-synchronization processing is performed on the paging process based on at least some reference symbols.

[0007] A pre-synchronization processing device, comprising:

[0008] The reference symbol acquisition module is used to receive at least a portion of the reference symbols in the pre-synchronization signal for the paging process, based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process, when in an idle state of discontinuous reception mode.

[0009] The reference symbol processing module is used to perform pre-synchronization processing for the paging process based on at least some reference symbols.

[0010] An electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the above-described pre-synchronization processing method.

[0011] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described pre-synchronization processing method.

[0012] A computer program product includes a computer program that, when executed by a processor, implements the steps of the above-described pre-synchronization processing method.

[0013] The aforementioned pre-synchronization processing method, apparatus, electronic device, storage medium, and computer program product, when in an idle state of discontinuous reception mode, receive at least a portion of the reference symbols in the pre-synchronization signal for the paging process based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process, and perform pre-synchronization processing on the paging process based on the obtained at least a portion of the reference symbols. It does not require receiving the complete pre-synchronization signal, but only receives at least a portion of the reference symbols for pre-synchronization processing, which can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is an application environment diagram of the pre-synchronization processing method in one embodiment;

[0016] Figure 2 Here is a flowchart of a pre-synchronization processing method in one embodiment;

[0017] Figure 3 This is a schematic diagram of a pre-synchronization subframe signal in one embodiment;

[0018] Figure 4 A flowchart for determining at least some reference symbols in one embodiment;

[0019] Figure 5 This is a schematic diagram illustrating the periodic reception of paging timing signals in one embodiment;

[0020] Figure 6 This is a schematic diagram of receiving a portion of the symbols in a pre-synchronization subframe signal in one embodiment;

[0021] Figure 7 This is a schematic diagram of receiving a symbol in one embodiment;

[0022] Figure 8 This is a schematic diagram of receiving two symbols in one embodiment;

[0023] Figure 9 This is a schematic diagram of receiving three symbols in one embodiment;

[0024] Figure 10 This is a structural block diagram of the pre-synchronization processing device in one embodiment;

[0025] Figure 11 This is a diagram of the internal structure of an electronic device in one embodiment. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] The pre-synchronization processing method provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, electronic device 102 communicates with base station 104 via a network. Base station 104 can send a downlink pre-synchronization signal to electronic device 102, which receives the pre-synchronization signal and performs pre-synchronization processing based on it, thereby waking up electronic device 102 for paging processing. For example, in LTE (Long Term Evolution) or NR (New Radio) communication networks, base station 104 can send a pre-synchronization signal through the downlink control channel, which electronic device 102 receives and performs pre-synchronization processing based on. After pre-synchronization is completed, electronic device 102 further receives a paging timing signal from base station 104 to wake up electronic device 102 for paging processing. In a specific application, when the electronic device 102 is in an idle state of discontinuous reception mode, the electronic device 102 can obtain at least some reference symbols in the pre-synchronization signal sent by the base station 104 for the paging process based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process. For example, the electronic device 102 can receive 3 reference symbols in the pre-synchronization signal. The electronic device 102 can perform pre-synchronization processing for the paging process based on the received at least some reference symbols.

[0028] The electronic device 102 can be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can include smart speakers, smart TVs, smart air conditioners, smart in-vehicle systems, and smart cars. Portable wearable devices can include smartwatches, smart bracelets, and head-mounted devices. The base station 104 can be a radio transceiver station that transmits information between a mobile communication switching center and a mobile phone terminal within a certain radio coverage area. The base station 104 transmits and receives messages via an antenna, and its main function is to provide wireless coverage, i.e., to enable wireless signal transmission between wired communication networks and wireless terminals.

[0029] In one embodiment, such as Figure 2 As shown, a pre-synchronization processing method is provided, which is applied to... Figure 1 Taking an electronic device as an example, the explanation includes the following steps:

[0030] Step 202: In the idle state of discontinuous reception mode, receive at least a portion of the reference symbols in the pre-synchronization signal for the paging process according to the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process.

[0031] In wireless communication, packet-based data streams are typically bursty, with data transmission occurring for a period followed by a longer period without transmission. During periods of no data transmission, power consumption can be reduced by ceasing downlink signal reception, thereby extending the lifespan of the receiving device—this is known as discontinuous reception. Discontinuous Reception (DRX) mode allows user equipment (UEs), specifically user-side electronic devices, to periodically enter a sleep state at certain times, refraining from listening to PDCCH (Physical Downlink Control Channel) subframes. When listening is required, the device is awakened from sleep mode, thus saving power. Discontinuous reception mode includes two operating states: Idle-DRX and Connected-DRX. In Idle-DRX, the electronic device periodically receives paging occupancy signals to obtain paging information, waking up the device to complete the called party process—this is known as paging processing.

[0032] To ensure the reception quality of the paging timing signal, the electronic device needs to receive the downlink signal in advance for pre-synchronization. This pre-synchronization estimates and adjusts the timing offset and frequency offset of the electronic device relative to the base station, ensuring that the electronic device and the base station can communicate synchronously. The paging process involves the base station sending a paging message to the user's electronic device at a specific time, notifying the electronic device to perform corresponding operations or update relevant parameters. The pre-synchronization signal is the downlink signal received by the electronic device before receiving the paging timing signal, used for time and frequency domain synchronization between the electronic device and the base station. The pre-synchronization signal may carry multiple reference symbols, specifically cell reference symbols (CRS), for pre-synchronization processing by the electronic device.

[0033] Signal characteristic parameters are used to characterize the signal quality of the pre-synchronization signal. Specifically, this can be a signal-to-noise ratio (SNR) value, representing the signal quality of the pre-synchronization signal. The SNR value refers to the numerical value of the signal-to-noise ratio, which is the ratio of the intensity of the received useful signal to the intensity of the received noise signal. Based on the signal characteristic parameters, the reference symbols in the pre-synchronization signal that need to be used for pre-synchronization processing can be determined. For example, if the signal characteristic parameters indicate that the signal quality of three reference symbols in the pre-synchronization signal meets the pre-synchronization processing requirements, at least three reference symbols in the pre-synchronization signal can be selected for pre-synchronization processing. In a specific application, such as... Figure 3 As shown, a pre-synchronization subframe signal includes 14 symbols, numbered from symbol 0 to symbol 13. Symbols 0, 4, 7, and 11 can be cell reference symbols, meaning that pre-synchronization processing can be performed using symbols 0, 4, 7, and 11.

[0034] Specifically, when the electronic device is in an idle state of discontinuous reception mode, it needs to periodically receive paging timing signals from the base station. Before receiving the paging timing signals, it needs to receive pre-synchronization signals for pre-synchronization processing to ensure time-frequency synchronization between the electronic device and the base station. The electronic device can determine the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process. Specifically, it can determine the signal characteristic parameters corresponding to different numbers of reference symbols in the pre-synchronization signal, and determine the reference symbols to be used for pre-synchronization processing based on the signal characteristic parameters. After determining the signal characteristic parameters, the electronic device obtains at least a portion of the reference symbols in the pre-synchronization signal based on the signal characteristic parameters. For example, an electronic device can determine the signal characteristic parameter X1 corresponding to two reference symbols in the pre-synchronization signal. If the signal characteristic parameter X1 is greater than or equal to the signal characteristic parameter threshold Y1 in the pre-synchronization processing condition, then at least two reference symbols in the pre-synchronization signal can be determined as at least some reference symbols. If the signal characteristic parameter X1 is less than the signal characteristic parameter threshold Y1, the electronic device can further determine the signal characteristic parameter X2 corresponding to three reference symbols in the pre-synchronization signal. If the signal characteristic parameter X2 is greater than or equal to the signal characteristic parameter threshold Y2 in the pre-synchronization processing condition, then at least three reference symbols in the pre-synchronization signal can be determined as at least some reference symbols. The electronic device can receive at least some reference symbols in the pre-synchronization signal for the paging process based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process. Specifically, at least some reference symbols may include one, two, or three or more reference symbols. In a specific implementation, the electronic device can determine the number of reference symbols to be received based on the signal-to-noise ratio (SNR) value of each reference symbol in the pre-synchronization signal, thereby obtaining at least some reference symbols.

[0035] Step 204: Perform pre-synchronization processing for the paging process based on at least some reference symbols.

[0036] Specifically, the electronic device performs pre-synchronization processing on the paging process based on at least some of the obtained reference symbols. Specifically, the paging process can be pre-synchronized in both the time domain and the frequency domain. Specifically, time domain synchronization can be performed based on timing deviation, and frequency domain synchronization can be performed based on frequency deviation, thereby achieving synchronization between the electronic device and the base station. This is beneficial for the electronic device and the base station to communicate in a time-frequency synchronized state.

[0037] In a specific application, when an electronic device is in an idle state of discontinuous reception mode, it can obtain at least a portion of the reference symbols in the pre-synchronization signal periodically transmitted by the base station in the 4G LTE network for the paging process. For example, it can obtain one reference symbol (e.g., symbol 0), two reference symbols (e.g., symbols 0 and 4), three reference symbols (e.g., symbols 0, 4, and 7), or four reference symbols (e.g., symbols 0, 4, 7, and 11). The electronic device performs pre-synchronization processing for the paging process based on these at least a portion of the reference symbols. Specifically, the electronic device can determine the timing deviation in the time domain and the frequency deviation in the frequency domain based on these at least a portion of the reference symbols. It performs time-domain synchronization based on the timing deviation and frequency-domain synchronization based on the frequency deviation, thereby achieving synchronization between the electronic device and the base station. This facilitates communication between the electronic device and the base station in a time-frequency synchronized state. During the pre-synchronization processing for the paging process, the electronic device can receive only at least a portion of the reference symbols in the pre-synchronization signal, instead of receiving all the symbols, reducing the number of symbols received and thus lowering the power consumption of the pre-synchronization processing.

[0038] In the above pre-synchronization processing method, when in the idle state of discontinuous reception mode, at least a portion of reference symbols are obtained from the pre-synchronization signal for the paging process, and pre-synchronization processing is performed on the paging process based on the obtained at least a portion of reference symbols. It is not necessary to receive the complete pre-synchronization signal, but only to receive at least a portion of reference symbols for pre-synchronization processing, which can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0039] In one embodiment, obtaining at least a portion of reference symbols in a pre-synchronization signal for a paging process in an idle state of discontinuous reception mode includes: determining signal characteristic parameters corresponding to the pre-synchronization signal for the paging process in an idle state of discontinuous reception mode; and obtaining at least a portion of reference symbols in the pre-synchronization signal that satisfy the pre-synchronization processing conditions based on the signal characteristic parameters.

[0040] The pre-synchronization processing conditions are set according to actual conditions and are used to determine the reference symbols used for pre-synchronization processing. These conditions may include a signal characteristic parameter threshold. When the signal characteristic parameter is greater than the threshold, the reference symbols corresponding to the signal characteristic parameter can be determined as at least a portion of the reference symbols for pre-synchronization processing. This allows for the acquisition of at least a portion of the reference symbols from the pre-synchronization signal for pre-synchronization processing based on the signal characteristic parameter threshold. Higher signal quality (i.e., higher signal-to-noise ratio) of the reference symbols in the pre-synchronization signal indicates that fewer reference symbols are needed for pre-synchronization processing. Conversely, lower signal quality (i.e., lower signal-to-noise ratio) indicates that more reference symbols are required for pre-synchronization processing.

[0041] Specifically, when the electronic device is in an idle state of discontinuous reception mode, it can determine the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process. Specifically, it can determine the signal characteristic parameters corresponding to different numbers of reference symbols in the pre-synchronization signal, and then determine the reference symbols needed for pre-synchronization processing based on these parameters. After determining the signal characteristic parameters, the electronic device obtains at least a portion of the reference symbols in the pre-synchronization signal based on these parameters. In this embodiment, the electronic device obtains at least a portion of the reference symbols in the pre-synchronization signal that satisfy the pre-synchronization processing conditions based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process. This allows it to determine at least a portion of the reference symbols for pre-synchronization processing based on the signal characteristics of the pre-synchronization signal, reducing the amount of data received by the electronic device during pre-synchronization processing and thus reducing the power consumption of the pre-synchronization processing.

[0042] In one embodiment, the signal characteristic parameter corresponding to the pre-synchronization signal for the paging process is the first signal-to-noise ratio value corresponding to the previous pre-synchronization signal for the previous paging process.

[0043] Here, the first signal-to-noise ratio (SNR) value is a signal characteristic parameter corresponding to the previous pre-synchronization signal, which refers to the pre-synchronization signal for the previous paging process. The first SNR value can be used as a signal characteristic parameter for predicting the current pre-synchronization signal, so that the reference symbols to be received can be predicted using the signal characteristics of the previous pre-synchronization signal before receiving the current pre-synchronization signal. The first SNR threshold is set according to actual needs, such as 25dB, to determine the first SNR value based on the first SNR threshold, thereby identifying at least a portion of the reference symbols in the pre-synchronization signal used for pre-synchronization processing.

[0044] In this embodiment, the electronic device uses the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal in the previous paging process as a signal feature parameter. Based on the first SNR value, it receives at least a portion of the reference symbols in the pre-synchronization signal for pre-synchronization processing. By utilizing the signal feature parameter of the previous pre-synchronization signal, at least a portion of the reference symbols in the current pre-synchronization signal can be predicted. This reduces the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0045] In one embodiment, receiving at least a portion of reference symbols in the pre-synchronization signal for the paging process based on signal characteristic parameters corresponding to the pre-synchronization signal for the paging process includes: if a first signal-to-noise ratio value is greater than or equal to a first signal-to-noise ratio threshold, receiving at least one reference symbol for pre-synchronization processing in the pre-synchronization signal for the paging process as the aforementioned at least a portion of reference symbols.

[0046] Specifically, before receiving the current pre-synchronization signal, the electronic device can determine the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal in the previous paging process. The electronic device acquires a pre-set first SNR threshold and compares the first SNR value with the first SNR threshold. If the first SNR value is greater than or equal to the first SNR threshold, it indicates that the signal quality of the first SNR value meets the pre-synchronization processing conditions using a reference symbol. For the current pre-synchronization signal, the electronic device can receive at least one reference symbol from the pre-synchronization signal for pre-synchronization processing and use the received at least one reference symbol as the aforementioned at least part of the reference symbols. Since the first SNR value is greater than or equal to the first SNR threshold, one reference symbol from the pre-synchronization signal used for pre-synchronization processing satisfies the pre-synchronization processing conditions, and the electronic device can receive at least one reference symbol for pre-synchronization processing, such as receiving one, two, or three or more reference symbols for pre-synchronization processing. Furthermore, when the electronic device receives a reference symbol from the pre-synchronization signal for pre-synchronization processing, it can choose to receive any reference symbol for pre-synchronization processing; or it can receive the last reference symbol so that pre-synchronization processing can be performed using the reference symbol closest to the paging timing signal, thus ensuring the accuracy of the pre-synchronization processing.

[0047] In this embodiment, the electronic device compares the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal in the previous paging process with a first SNR threshold. If the first SNR value is greater than or equal to the first SNR threshold, it receives at least one reference symbol in the pre-synchronization signal used for pre-synchronization processing as at least a partial reference symbol. This allows the signal characteristic parameters of the previous pre-synchronization signal to be used to predict at least a partial reference symbol in the current pre-synchronization signal, thereby reducing the amount of data received by the electronic device during pre-synchronization processing and thus reducing the power consumption of pre-synchronization processing.

[0048] In one embodiment, the pre-synchronization processing method further includes: determining a second signal-to-noise ratio (SNR) value for the entirety of two reference symbols in the pre-synchronization signal for the paging process when the first SNR value is less than a first SNR threshold; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal for the previous paging process; receiving at least a portion of the reference symbols in the pre-synchronization signal for the paging process based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process includes: obtaining at least a portion of the reference symbols based on at least two reference symbols in the pre-synchronization signal when the second SNR value is greater than or equal to the second SNR threshold; the at least two reference symbols include two reference symbols.

[0049] The second signal-to-noise ratio (SNR) value is a signal characteristic parameter of the two reference symbols in the pre-synchronization signal during the paging process. Specifically, it is obtained by receiving two different reference symbols in the pre-synchronization signal and performing signal analysis on those two symbols. The first SNR value is the signal characteristic parameter corresponding to the previous pre-synchronization signal, which refers to the pre-synchronization signal from the previous paging process. The second SNR threshold is set according to actual needs; for example, it can be set to a value less than 20 dB of the first SNR threshold. This allows for the determination of the second SNR value based on the second SNR threshold, thereby identifying at least a portion of the reference symbols used for pre-synchronization processing in the pre-synchronization signal.

[0050] Specifically, before receiving the current pre-synchronization signal, the electronic device can determine the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal in the previous paging process. If the first SNR value is less than the first SNR threshold, meaning that for the current pre-synchronization signal, the electronic device can only receive one reference symbol from the pre-synchronization signal and cannot perform effective pre-synchronization processing. The electronic device can determine the second SNR value of the entirety of the two reference symbols in the pre-synchronization signal for the paging process. Specifically, the electronic device can receive two different reference symbols in the pre-synchronization signal and determine the second SNR value of the entirety of the two different reference symbols. The electronic device obtains a pre-set second SNR threshold and compares the second SNR value with the second SNR threshold. If the second SNR value is greater than or equal to the second SNR threshold, it indicates that the signal quality of the second SNR value meets the pre-synchronization processing condition of using two reference symbols for pre-synchronization processing. For the current pre-synchronization signal, the electronic device can receive at least two reference symbols for pre-synchronization processing in the pre-synchronization signal and obtain at least a portion of the reference symbols based on the received at least two reference symbols. If the second signal-to-noise ratio (SNR) value is greater than or equal to the second SNR threshold, then the two reference symbols used for pre-synchronization processing in the pre-synchronization signal satisfy the pre-synchronization processing condition. That is, the two different reference symbols received by the electronic device can satisfy the pre-synchronization processing condition, and pre-synchronization processing can be performed directly using the two different received reference symbols. Furthermore, the electronic device can continue to receive other reference symbols, thereby obtaining at least a portion of the reference symbols based on at least two received reference symbols, and thus performing pre-synchronization processing based on at least a portion of the reference symbols.

[0051] In this embodiment, when the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal for the previous paging process is less than the first SNR threshold, the electronic device determines the second SNR value of the entire set of two reference symbols in the pre-synchronization signal for the paging process. When the second SNR value is greater than or equal to the second SNR threshold, at least a portion of the reference symbols for pre-synchronization processing are obtained based on at least two reference symbols in the pre-synchronization signal. This can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0052] In one embodiment, the pre-synchronization processing method further includes: when the second signal-to-noise ratio value is less than the third signal-to-noise ratio threshold, obtaining at least a portion of the reference symbols based on at least four reference symbols in the pre-synchronization signal; the third signal-to-noise ratio threshold is less than the second signal-to-noise ratio threshold; and the at least four reference symbols include two reference symbols.

[0053] The third signal-to-noise ratio threshold is set according to actual needs. For example, it can be set to a value less than 15dB of the second signal-to-noise ratio threshold, so as to determine the second signal-to-noise ratio value based on the third signal-to-noise ratio threshold, thereby determining at least a portion of the reference symbols used for pre-synchronization processing in the pre-synchronization signal.

[0054] Specifically, the electronic device compares the second signal-to-noise ratio (SNR) value with a second SNR threshold. If the second SNR value is less than the second SNR threshold, it indicates that the signal quality of the second SNR value does not meet the pre-synchronization processing conditions using two reference symbols. The electronic device can further obtain the pre-synchronization processing conditions using three reference symbols, i.e., obtain a third SNR threshold, and compare the second SNR value with the third SNR threshold. If the second SNR value is still less than the third SNR threshold, it indicates that the pre-synchronization signal also does not meet the pre-synchronization processing conditions using three reference symbols. Therefore, the electronic device can obtain at least some reference symbols based on at least four reference symbols in the pre-synchronization signal.

[0055] In specific implementation, after receiving two different reference symbols and determining the second signal-to-noise ratio (SNR) values ​​of the two different reference symbols, if the second SNR value is less than the second SNR threshold and the third SNR threshold, the electronic device can continue to receive at least two more reference symbols, thereby obtaining at least four reference symbols. Based on the obtained at least four reference symbols, at least a portion of the reference symbols are obtained, and pre-synchronization processing is performed based on the at least a portion of the reference symbols. For example, the electronic device can first receive reference symbol N with sequence number N and reference symbol N+1 with sequence number N+1. If the second SNR values ​​of reference symbol N and reference symbol N+1 are less than the second SNR threshold and the third SNR threshold, the electronic device can continue to receive reference symbol N+5 with sequence number N+5 and reference symbol N+6 with sequence number N+6. By receiving the obtained reference symbols N, N+1, N+5, and N+6, at least a portion of the reference symbols are obtained.

[0056] In this embodiment, when the second signal-to-noise ratio value is less than the second signal-to-noise ratio threshold and the third signal-to-noise ratio threshold, the electronic device obtains at least a portion of the reference symbols for pre-synchronization processing based on at least four reference symbols in the pre-synchronization signal. This can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0057] In one embodiment, the pre-synchronization processing method further includes: determining a third signal-to-noise ratio (SNR) value for the entirety of three different reference symbols in the pre-synchronization signal for the paging process when a first SNR value is less than a first SNR threshold and a second SNR value is less than a second SNR threshold but greater than or equal to a third SNR threshold; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal for the previous paging process; the second SNR value is the SNR value for the entirety of two reference symbols among the three different reference symbols; receiving at least some reference symbols in the pre-synchronization signal for the paging process according to the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process includes: obtaining at least some reference symbols based on at least three reference symbols in the pre-synchronization signal when the third SNR value is less than a third SNR threshold and greater than or equal to a fourth SNR threshold; the at least three reference symbols include three different reference symbols.

[0058] The third signal-to-noise ratio (SNR) value is a signal characteristic parameter of the entirety of three different reference symbols in the pre-synchronization signal during the paging process. Specifically, it is obtained by receiving the three different reference symbols in the pre-synchronization signal and performing signal analysis on the entirety of these three reference symbols. The first SNR value is a signal characteristic parameter corresponding to the previous pre-synchronization signal, which refers to the pre-synchronization signal from the previous paging process. The second SNR value is a signal characteristic parameter of the entirety of two reference symbols in the pre-synchronization signal during the paging process. Specifically, it is obtained by receiving the two different reference symbols in the pre-synchronization signal and performing signal analysis on the entirety of these two reference symbols. The third and fourth SNR thresholds can be set according to actual needs. For example, the third SNR threshold can be set to 15dB, and the fourth SNR threshold can be set to 10dB. The third SNR value is determined based on these thresholds to identify at least a portion of the reference symbols used for pre-synchronization processing in the pre-synchronization signal.

[0059] Specifically, before receiving the current pre-synchronization signal, the electronic device can determine the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal in the previous paging process. If the first SNR value is less than the first SNR threshold, it means that for the current pre-synchronization signal, the electronic device cannot perform effective pre-synchronization processing by only receiving one reference symbol from the pre-synchronization signal. The electronic device can determine the second SNR value of the entirety of two different reference symbols in the pre-synchronization signal of the paging process. If the second SNR value is less than the second SNR threshold but greater than or equal to the third SNR threshold, it indicates that the signal quality of the second SNR value does not meet the pre-synchronization processing conditions for using two reference symbols. The electronic device can determine the third SNR value of the entirety of three different reference symbols in the pre-synchronization signal of the paging process. Specifically, the electronic device can receive three different reference symbols in the pre-synchronization signal and determine the third SNR value of the received three different reference symbols. The electronic device acquires a preset fourth signal-to-noise ratio (SNR) threshold and compares the third SNR value with both the third and fourth SNR thresholds. If the third SNR value is less than the third SNR threshold and greater than or equal to the fourth SNR threshold, it indicates that the signal quality of the third SNR value meets the pre-synchronization processing conditions using three reference symbols. For this pre-synchronization signal, the electronic device can receive at least three reference symbols for pre-synchronization processing in the pre-synchronization signal and obtain at least some reference symbols based on the received at least three reference symbols.

[0060] In specific implementation, after receiving two different reference symbols and determining the second signal-to-noise ratio (SNR) values ​​of the two different reference symbols, if the second SNR value is less than the second SNR threshold but greater than or equal to the third SNR threshold, the electronic device can continue to receive one more reference symbol and determine the third SNR value of the three received reference symbols as a whole. If the third SNR value is less than the third SNR threshold but greater than or equal to the fourth SNR threshold, the electronic device can directly perform pre-synchronization processing based on the three received reference symbols, or it can further receive at least one reference symbol to obtain at least three reference symbols, and then use the obtained at least three reference symbols for pre-synchronization processing.

[0061] In this embodiment, when the third signal-to-noise ratio value of the three different reference symbols as a whole is less than the third signal-to-noise ratio threshold and greater than or equal to the fourth signal-to-noise ratio threshold, the electronic device obtains at least a portion of the reference symbols for pre-synchronization processing based on at least three reference symbols in the pre-synchronization signal. This can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0062] In one embodiment, determining the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process includes: determining a third signal-to-noise ratio (SNR) value of the entire three different reference symbols in the pre-synchronization signal for the paging process when a first SNR value is less than a first SNR threshold and a second SNR value is less than a second SNR threshold but greater than or equal to a third SNR threshold; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal for the previous paging process; the second SNR value is the SNR value of the entire two reference symbols among the three different reference symbols; receiving at least some reference symbols in the pre-synchronization signal for the paging process based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process includes: obtaining at least some reference symbols based on at least four reference symbols in the pre-synchronization signal when the third SNR value is not less than a third SNR threshold or less than a fourth SNR threshold; the at least four reference symbols include three different reference symbols.

[0063] Specifically, before receiving the current pre-synchronization signal, the electronic device can determine the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal in the previous paging process. If the first SNR value is less than the first SNR threshold, it means that for the current pre-synchronization signal, the electronic device can only receive one reference symbol in the pre-synchronization signal and cannot perform effective pre-synchronization processing. The electronic device can determine the second SNR value of the entire set of two reference symbols in the pre-synchronization signal for the paging process. If the second SNR value is less than the second SNR threshold but greater than or equal to the third SNR threshold, it indicates that the signal quality of the second SNR value does not meet the pre-synchronization processing conditions for using two reference symbols. The electronic device can determine the third SNR value of the entire set of three different reference symbols in the pre-synchronization signal for the paging process. Specifically, the electronic device can receive three different reference symbols in the pre-synchronization signal and determine the third SNR value of the entire set of the received three different reference symbols. The electronic device acquires a preset fourth signal-to-noise ratio (SNR) threshold and compares the third SNR value with both the third and fourth SNR thresholds. If the third SNR value is not less than the third SNR threshold or is less than the fourth SNR threshold, it indicates that the signal quality of the third SNR value does not meet the pre-synchronization processing conditions using three reference symbols. For this pre-synchronization signal, the electronic device needs to receive at least four reference symbols for pre-synchronization processing in the pre-synchronization signal and obtain at least some reference symbols based on the received at least four reference symbols.

[0064] In this embodiment, when the third signal-to-noise ratio value of the three different reference symbols as a whole is not less than the third signal-to-noise ratio threshold or less than the fourth signal-to-noise ratio threshold, the electronic device obtains at least a portion of the reference symbols for pre-synchronization processing based on at least four reference symbols in the pre-synchronization signal. This can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0065] In one embodiment, the pre-synchronization processing method further includes: determining the target reference symbol corresponding to the pre-synchronization signal for the paging process; obtaining the reference signal received power and received signal strength index of the target reference symbol; calculating the signal-to-noise ratio (SNR) value of the target reference symbol based on the reference signal received power and received signal strength index, and obtaining the signal characteristic parameters corresponding to the pre-synchronization signal based on the SNR value.

[0066] The target reference symbol is the reference symbol corresponding to the pre-synchronization signal whose signal characteristic parameters need to be determined. In different situations, the target reference symbol can include different numbers of reference symbols. For example, the target reference symbol can be the reference symbols included in the previous pre-synchronization signal, so as to use the previous pre-synchronization signal to predict the signal characteristic parameters of the current pre-synchronization signal; or, the target reference symbol can include one, two, or more reference symbols in the current pre-synchronization signal. The Reference Signal Receiving Power (RSRP) is the average signal power received on all REs (Resource Elements) carrying the reference signal within a symbol; the Received Signal Strength Indicator (RSSI) is the average power of all signals received within a symbol (including pilot signals, data signals, neighboring cell interference signals, noise signals, etc.). The signal-to-noise ratio (SNR) value can be the specific SNR value of the target reference symbol, and the signal characteristic parameters corresponding to the pre-synchronization signal can be obtained from the SNR value.

[0067] Specifically, corresponding to the pre-synchronization signal in the paging process, the electronic device can determine the target reference symbol corresponding to the pre-synchronization signal. The target reference symbol can be several reference symbols in the pre-synchronization signal, or it can be a reference symbol in the previous pre-synchronization signal. The electronic device can obtain the reference signal received power and received signal strength index of the target reference symbol, and calculate the signal-to-noise ratio (SNR) value based on the reference signal received power and received signal strength index. Based on this SNR value, the signal characteristic parameters corresponding to the pre-synchronization signal can be determined. In a specific implementation, the electronic device can calculate the SNR value of the target reference symbol according to the formula SNR = reference signal received power / (received signal strength index - reference signal received power).

[0068] In this embodiment, the electronic device calculates the signal-to-noise ratio (SNR) based on the reference signal received power and received signal strength index of the target reference symbol corresponding to the pre-synchronization signal, and obtains the signal characteristic parameters corresponding to the pre-synchronization signal according to the SNR. Thus, the signal quality of the pre-synchronization signal can be characterized by the signal characteristic parameters, and pre-synchronization processing can be performed by receiving at least a portion of the reference symbols in the pre-synchronization signal. This can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0069] In one embodiment, pre-synchronization processing of the paging process is performed based on at least some reference symbols, including: determining the frequency deviation based on at least some reference symbols; obtaining the timing deviation corresponding to at least some reference symbols; performing frequency domain pre-synchronization processing on the paging process based on the frequency deviation; and performing time domain pre-synchronization processing on the paging process based on the timing deviation.

[0070] Frequency deviation describes the degree of deviation between the electronic device and the base station in the frequency domain, while timing deviation describes the degree of deviation in the time domain. Frequency domain pre-synchronization processing adjusts for this frequency deviation to achieve synchronization between the two devices. Time domain pre-synchronization processing adjusts for this timing deviation to achieve synchronization in the time domain.

[0071] Specifically, the electronic device can determine the frequency deviation based on at least some reference symbols, such as the angle between the reference symbols or between different data segments. The electronic device can also acquire the timing deviation corresponding to at least some reference symbols, specifically by selecting different signals at the same frequency and obtaining the timing deviation based on the time deviation between the selected signals. The electronic device uses the frequency deviation for frequency-domain pre-synchronization processing and the timing deviation for time-domain pre-synchronization processing, thereby achieving pre-synchronization processing for the paging process.

[0072] In this embodiment, frequency deviation and timing deviation are determined by at least some reference symbols, and pre-synchronization processing in the frequency domain and time domain is performed by frequency deviation and timing deviation respectively, thereby ensuring that electronic devices and base stations can perform paging processing in a time-frequency synchronized state, thus ensuring the communication quality of electronic devices.

[0073] In one embodiment, the pre-synchronization signal for the paging process includes four different reference symbols arranged in chronological order; such as Figure 4As shown, the process of determining at least some reference symbols, i.e., in the idle state of discontinuous reception mode, receiving at least some reference symbols in the pre-synchronization signal for the paging process based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process, includes:

[0074] Step 402: In the idle state of discontinuous reception mode, determine the first signal-to-noise ratio value corresponding to the previous pre-synchronization signal for the previous paging process.

[0075] The pre-synchronization signal for the paging process includes four different reference symbols arranged in chronological order. For example, the pre-synchronization signal can be a pre-synchronization subframe signal, which includes 14 symbols arranged in chronological order, numbered from 0 to 13. Symbol 0 is the first symbol in the pre-synchronization subframe signal, and symbol 13 is the fourteenth symbol. Symbols 0, 4, 7, and 11 are reference symbols used for pre-synchronization processing. The first signal-to-noise ratio (SNR) value is the signal characteristic parameter corresponding to the previous pre-synchronization signal, which refers to the pre-synchronization signal for the previous paging process.

[0076] Specifically, when the electronic device is in an idle state of discontinuous reception mode, before receiving the current pre-synchronization signal, it can determine the first signal-to-noise ratio value corresponding to the previous pre-synchronization signal of the previous paging process.

[0077] Step 404: If the first signal-to-noise ratio value is less than the first signal-to-noise ratio threshold, the first reference symbol and the second reference symbol arranged in time order in the pre-synchronization signal are received sequentially.

[0078] The first signal-to-noise ratio threshold can be set according to actual needs, such as 25dB. The pre-synchronization signal includes four reference symbols arranged in chronological order, with the first and second reference symbols being the first two in the sequence.

[0079] Specifically, the electronic device acquires a preset first signal-to-noise ratio (SNR) threshold, such as 25 dB. The electronic device compares the first SNR value with the first SNR threshold. If the first SNR value is less than the first SNR threshold, it indicates that pre-synchronization processing cannot be performed based on a reference symbol. The electronic device then receives the first and second reference symbols arranged in chronological order in the pre-synchronization signal. Specifically, when symbols 0, 4, 7, and 11 in the pre-synchronization signal are reference symbols used for pre-synchronization processing, the electronic device can receive symbols 0 and 4 in the pre-synchronization signal.

[0080] Step 406: Determine the second signal-to-noise ratio value for the first and second reference symbols as a whole.

[0081] Specifically, for the received first and second reference symbols, the electronic device can determine the overall second signal-to-noise ratio (SNR) value of the first and second reference symbols. The second SNR value is the overall SNR value of the first and second reference symbols, which can be obtained by summing the individual SNR values ​​of the first and second reference symbols. In practical implementation, the electronic device can obtain the received reference signal power and received signal strength indicators for each of the first and second reference symbols, and calculate the second SNR value based on these indicators. For example, the electronic device can calculate the individual SNR values ​​of the first and second reference symbols separately based on their respective received reference signal power and received signal strength indicators, and then obtain the second SNR value by summing these individual SNR values.

[0082] Step 408: If the second signal-to-noise ratio value is greater than or equal to the second signal-to-noise ratio threshold, the first reference symbol and the second reference symbol are used as at least some reference symbols.

[0083] The second signal-to-noise ratio (SNR) threshold is set according to actual needs, such as being 20 dB less than the first SNR threshold. Specifically, the electronic device compares the second SNR value with the preset second SNR threshold. If the second SNR value is greater than or equal to the second SNR threshold, it indicates that the first reference symbol and the second reference symbol meet the pre-synchronization processing conditions. The electronic device then uses the first reference symbol and the second reference symbol as at least some of the reference symbols for pre-synchronization processing.

[0084] In this embodiment, when the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal for the previous paging process is less than the first SNR threshold, the electronic device receives the first reference symbol and the second reference symbol arranged in chronological order in the pre-synchronization signal for the paging process. When the second SNR value of the first reference symbol and the second reference symbol is greater than or equal to the second SNR threshold, the first reference symbol and the second reference symbol are used as at least part of the reference symbols for pre-synchronization processing. This can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0085] In one embodiment, receiving a first reference symbol and a second reference symbol arranged in chronological order in a pre-synchronization signal sequentially includes: sequentially receiving a first reference data portion of the first reference symbol and a second reference data portion of the second reference symbol arranged in chronological order in the pre-synchronization signal; performing pre-synchronization processing on the paging process based on at least some of the reference symbols, including: determining a frequency deviation based on the channel coefficients of the first reference data portion, the channel coefficients of the second reference data portion, and the symbol interval duration between the first and second reference symbols; obtaining the timing deviations corresponding to the first and second reference symbols; performing frequency domain pre-synchronization processing on the paging process based on the frequency deviation, and performing time domain pre-synchronization processing on the paging process based on the timing deviation.

[0086] Each reference symbol can include a data reference part and a cyclic prefix part. The cyclic prefix part is used for anti-interference, while the data reference part can be used for pre-synchronization processing. Channel coefficients characterize the features of the channel transmitting the signal. Under different channel coefficient conditions, the channel's impact on the transmitted signal varies. The signal receiver can reconstruct the received signal based on the channel coefficients. Specifically, channel coefficients can include a channel matrix, which can be obtained through channel estimation. The symbol interval duration represents the interval between different reference symbols, and can be calculated based on the start time difference between different reference symbols.

[0087] Specifically, the electronic device can sequentially receive the first and second reference symbols arranged in chronological order from the pre-synchronization signal. The data within each reference symbol that is effectively used for pre-synchronization processing is its reference data portion. Therefore, the electronic device can receive only the reference data portion of the reference symbols, specifically the first reference data portion of the first reference symbol and the second reference data portion of the second reference symbol sequentially. When determining to perform pre-synchronization processing based on the first and second reference symbols, the electronic device can obtain the channel coefficients of the first and second reference data portions and determine the symbol interval between the first and second reference symbols. The channel coefficients can be obtained through channel estimation of the corresponding channels, while the symbol interval can be determined based on the difference between the start times of the first and second reference symbols. The electronic device calculates the frequency deviation based on the channel coefficients of the first and second reference data portions and the symbol interval. The electronic device obtains the timing deviation corresponding to the first and second reference symbols. Specifically, at the same frequency, it can obtain at least two data points from the first and second reference symbols to calculate the timing deviation. Electronic devices utilize frequency deviation to perform frequency domain pre-synchronization processing in the frequency domain and timing deviation to perform time domain pre-synchronization processing, thereby achieving pre-synchronization processing for the paging process.

[0088] In this embodiment, by receiving the reference data portions of the first and second reference symbols respectively, the amount of data received by the electronic device can be reduced. Frequency domain pre-synchronization processing is performed based on the channel coefficients of the first and second reference data portions and the frequency deviation determined by the symbol interval duration. Time domain pre-synchronization processing is performed based on the timing deviations corresponding to the first and second reference symbols. This ensures that the electronic device and the base station can perform paging processing in a time-frequency synchronized state, thus ensuring the communication quality of the electronic device.

[0089] In one embodiment, the pre-synchronization processing method further includes: if the first signal-to-noise ratio value is greater than or equal to the first signal-to-noise ratio threshold, receiving a fourth reference symbol arranged in chronological order in the pre-synchronization signal for the paging process; and obtaining at least a portion of the reference symbols based on the fourth reference symbol.

[0090] The pre-synchronization signal includes four reference symbols arranged in chronological order, with the fourth reference symbol being the last one in the sequence. Specifically, the electronic device compares a first signal-to-noise ratio (SNR) value with a first SNR threshold. If the first SNR value is greater than or equal to the first SNR threshold, it indicates that pre-synchronization processing can be performed based on a reference symbol. In this case, the electronic device receives the fourth reference symbol arranged in chronological order in the pre-synchronization signal. Specifically, if symbols 0, 4, 7, and 11 in the pre-synchronization signal are reference symbols used for pre-synchronization processing, the electronic device can receive symbol 11 in the pre-synchronization signal for pre-synchronization processing.

[0091] In this embodiment, the electronic device compares the first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal in the previous paging process with a first SNR threshold. If the first SNR value is greater than or equal to the first SNR threshold, the fourth reference symbol arranged in chronological order in the pre-synchronization signal is received as at least a portion of the reference symbols for pre-synchronization processing. This can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0092] In one embodiment, receiving a fourth reference symbol arranged in chronological order in a pre-synchronization signal for a paging process includes: receiving global symbol content in the fourth reference symbol arranged in chronological order in the pre-synchronization signal for the paging process; the global symbol content includes a cyclic prefix portion and a fourth reference data portion; performing pre-synchronization processing for the paging process based on at least some of the reference symbols, including: determining a frequency deviation based on the channel coefficients of the cyclic prefix portion, the channel coefficients of the fourth reference data portion, and the duration of the fourth reference data portion; obtaining a timing deviation corresponding to the fourth reference symbol; performing frequency domain pre-synchronization processing on the paging process based on the frequency deviation, and performing time domain pre-synchronization processing on the paging process based on the timing deviation.

[0093] The global symbol content refers to the complete reference symbol, specifically including the cyclic prefix part and the reference data part. For the global symbol content in the fourth reference symbol, it includes the cyclic prefix part and the fourth reference data part.

[0094] Specifically, the electronic device can receive the fourth reference symbol arranged in chronological order in the pre-synchronization signal, specifically receiving the global symbol content of the fourth reference symbol, including the cyclic prefix portion and the fourth reference data portion. The electronic device can obtain the channel coefficients of the fourth reference data portion and determine its duration. Based on the channel coefficients of the cyclic prefix portion, the channel coefficients of the fourth reference data portion, and its duration, the electronic device calculates the frequency deviation. The electronic device can then perform frequency-domain pre-synchronization processing based on the obtained frequency deviation. The electronic device also obtains the timing deviation corresponding to the fourth reference symbol and performs pre-synchronization processing in the time domain based on this timing deviation, thereby achieving pre-synchronization processing for the paging process.

[0095] In this embodiment, by receiving the fourth reference symbol, the amount of data received by the electronic device can be reduced. Frequency domain pre-synchronization processing is performed based on the channel coefficient of the cyclic prefix part of the fourth reference symbol, the channel coefficient of the fourth reference data part, and the frequency deviation determined by the duration of the fourth reference data part. Time domain pre-synchronization processing is performed based on the timing deviation corresponding to the fourth reference symbol. This ensures that the electronic device and the base station can perform paging processing in a time-frequency synchronized state, thus ensuring the communication quality of the electronic device.

[0096] In one embodiment, the pre-synchronization processing method further includes: receiving a third reference symbol arranged in chronological order in the pre-synchronization signal when the second signal-to-noise ratio value is less than a second signal-to-noise ratio threshold and greater than or equal to a third signal-to-noise ratio threshold; determining a third signal-to-noise ratio value for the entire first, second, and third reference symbols; and using the first, second, and third reference symbols as at least some of the reference symbols when the third signal-to-noise ratio value is less than a third signal-to-noise ratio threshold and greater than or equal to a fourth signal-to-noise ratio threshold.

[0097] The third signal-to-noise ratio (SNR) threshold is set according to actual needs, such as being 15 dB less than the second SNR threshold. The pre-synchronization signal includes four reference symbols arranged in chronological order, with the third reference symbol being the third in the sequence. The fourth SNR threshold is also set according to actual needs, specifically being 10 dB less than the third SNR threshold.

[0098] Specifically, the electronic device compares the second signal-to-noise ratio (SNR) value with a preset second SNR threshold and a third SNR threshold. If the second SNR value is less than the second SNR threshold and greater than or equal to the third SNR threshold, it indicates that the first and second reference symbols do not meet the pre-synchronization processing conditions. The electronic device then continues to receive the third reference symbol arranged in chronological order from the pre-synchronization signal. The electronic device can determine the overall third SNR value of the first, second, and third reference symbols, specifically by summing the individual SNR values ​​of each symbol. The electronic device compares the third SNR value with a preset third SNR threshold and a fourth SNR threshold. If the third SNR value is less than the third SNR threshold and greater than or equal to the fourth SNR threshold, it indicates that the first, second, and third reference symbols meet the pre-synchronization processing conditions. The electronic device then uses the first, second, and third reference symbols as at least a portion of the reference symbols for pre-synchronization processing, and performs pre-synchronization processing using these symbols.

[0099] In this embodiment, when the second signal-to-noise ratio (SNR) value is less than the second SNR threshold and greater than or equal to the third SNR threshold, the electronic device continues to receive the third reference symbol and determines the third SNR value of the first, second, and third reference symbols as a whole. When the third SNR value is less than the third SNR threshold and greater than or equal to the fourth SNR threshold, the first, second, and third reference symbols are used as at least some of the reference symbols for pre-synchronization processing. This can reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0100] In one embodiment, the values ​​of the first signal-to-noise ratio threshold, the second signal-to-noise ratio threshold, the third signal-to-noise ratio threshold, and the fourth signal-to-noise ratio threshold gradually decrease.

[0101] Specifically, each signal-to-noise ratio (SNR) threshold can be set according to actual needs, but the first SNR threshold value is greater than the second SNR threshold value, the second SNR threshold value is greater than the third SNR threshold value, and the third SNR threshold value is greater than the fourth SNR threshold value. For example, the first SNR threshold can be set to 25dB, the second SNR threshold can be set to 20dB, the third SNR threshold can be set to 15dB, and the fourth SNR threshold can be set to 10dB.

[0102] In this embodiment, by gradually decreasing the values ​​of the first signal-to-noise ratio threshold, the second signal-to-noise ratio threshold, the third signal-to-noise ratio threshold, and the fourth signal-to-noise ratio threshold, the number of received reference symbols can be gradually controlled using each signal-to-noise ratio threshold. This can accurately reduce the amount of data received by the electronic device during pre-synchronization processing, thereby reducing the power consumption of pre-synchronization processing.

[0103] In one embodiment, receiving a third reference symbol arranged in chronological order in a pre-synchronization signal includes: receiving a third reference data portion of the third reference symbol arranged in chronological order in the pre-synchronization signal for a paging process; performing pre-synchronization processing for the paging process based on at least some of the reference symbols, including: determining a frequency deviation based on the channel coefficients of the first reference data portion in the first reference symbol, the channel coefficients of the second reference data portion in the second reference symbol, and the channel coefficients of the third reference data portion; acquiring the timing deviations corresponding to the first, second, and third reference symbols; performing frequency domain pre-synchronization processing on the paging process based on the frequency deviations, and performing time domain pre-synchronization processing on the paging process based on the timing deviations.

[0104] The third reference data portion refers to the reference data portion of the third reference symbol. Specifically, the electronic device can receive the third reference symbol arranged in chronological order from the pre-synchronization signal for the paging process, specifically receiving the third reference data portion of the third reference symbol. The electronic device calculates the frequency deviation based on the channel coefficients of the first reference data portion of the first reference symbol, the channel coefficients of the second reference data portion of the second reference symbol, and the channel coefficients of the third reference data portion. In specific implementation, the electronic device can calculate the first frequency deviation based on the first and second reference symbols, calculate the second frequency deviation based on the second and third reference symbols, and then weight the first and second frequency deviations to obtain the final frequency deviation. The electronic device performs frequency domain pre-synchronization processing based on the determined frequency deviation. The electronic device can also acquire the timing deviations corresponding to the first, second, and third reference symbols and use these timing deviations to perform pre-synchronization processing in the time domain, thereby achieving pre-synchronization processing for the paging process.

[0105] In this embodiment, by receiving the reference data portions of the first, second, and third reference symbols, the amount of data received by the electronic device can be reduced. Frequency domain pre-synchronization processing is performed based on the frequency deviation determined by the channel coefficients of the first, second, and third reference data portions, and time domain pre-synchronization processing is performed based on the timing deviations corresponding to the first, second, and third reference symbols. This ensures that the electronic device and the base station can perform paging processing in a time-frequency synchronized state, thus ensuring the communication quality of the electronic device.

[0106] In one embodiment, determining the frequency offset based on the channel coefficients of the first reference data portion in the first reference symbol, the channel coefficients of the second reference data portion in the second reference symbol, and the channel coefficients of the third reference data portion includes: determining a first frequency offset based on the channel coefficients of the first reference data portion in the first reference symbol, the channel coefficients of the second reference data portion in the second reference symbol, and the symbol interval duration between the first and second reference symbols; determining a second frequency offset based on the channel coefficients of the second and third reference data portions, and the symbol interval duration between the second and third reference symbols; and calculating the frequency offset by weighting the first and second frequency offsets.

[0107] The first frequency deviation is calculated based on the first and second reference symbols, and the second frequency deviation is calculated based on the second and third reference symbols.

[0108] Specifically, for the first and second reference symbols, the electronic device can calculate the first frequency deviation based on the channel coefficients of the first reference data portion of the first reference symbol, the channel coefficients of the second reference data portion of the second reference symbol, and the symbol interval duration between the first and second reference symbols. Similarly, for the second and third reference symbols, the electronic device can calculate the second frequency deviation based on the channel coefficients of the second and third reference data portions, and the symbol interval duration between the second and third reference symbols. The electronic device can perform a weighted calculation of the first and second frequency deviations to obtain the final frequency deviation. In practical implementation, the weights of the first and second frequency deviations can be preset, and the electronic device performs a weighted calculation based on these weights to obtain the final frequency deviation.

[0109] In this embodiment, the electronic device calculates the first frequency deviation based on the first reference symbol and the second reference symbol, calculates the second frequency deviation based on the second reference symbol and the third reference symbol, and calculates the frequency deviation by weighting the first frequency deviation and the second frequency deviation. This can effectively utilize the first reference symbol, the second reference symbol and the third reference symbol to calculate the frequency deviation, which can ensure the accuracy of the frequency deviation and thus ensure the accuracy of frequency domain synchronization.

[0110] In one embodiment, the pre-synchronization processing method further includes: when the second signal-to-noise ratio value is less than the second signal-to-noise ratio threshold and less than the third signal-to-noise ratio threshold, sequentially receiving the third and fourth reference symbols arranged in chronological order in the pre-synchronization signal; and using the first, second, third, and fourth reference symbols as at least some of the reference symbols.

[0111] The third signal-to-noise ratio (SNR) threshold is set according to actual needs, such as 15dB. Specifically, the electronic device compares the second SNR value with the preset second and third SNR thresholds respectively. If the second SNR value is less than the second and third SNR thresholds, it indicates that effective pre-synchronization processing cannot be performed using only some reference symbols. In this case, the electronic device can directly continue to receive the third and fourth reference symbols arranged in chronological order in the pre-synchronization signal. The electronic device uses the received first, second, third, and fourth reference symbols as at least some of the reference symbols for pre-synchronization processing, so that pre-synchronization processing can be performed using the first, second, third, and fourth reference symbols.

[0112] In this embodiment, when the second signal-to-noise ratio value is less than the second signal-to-noise ratio threshold and less than the third signal-to-noise ratio threshold, the electronic device continues to receive the third and fourth reference symbols. By using the first, second, third, and fourth reference symbols as at least some of the reference symbols for pre-synchronization processing, the amount of data received by the electronic device during pre-synchronization processing can be reduced, thereby reducing the power consumption of pre-synchronization processing.

[0113] In one embodiment, receiving the third and fourth reference symbols arranged in chronological order in the pre-synchronization signal sequentially includes: sequentially receiving the third reference data portion of the third reference symbol and the fourth reference data portion of the fourth reference symbol arranged in chronological order in the pre-synchronization signal; performing pre-synchronization processing on the paging process based on at least some of the reference symbols, including: determining the frequency deviation based on the channel coefficients of the first reference data portion of the first reference symbol, the channel coefficients of the second reference data portion of the second reference symbol, the channel coefficients of the third reference data portion, and the channel coefficients of the fourth reference data portion; obtaining the timing deviations corresponding to the first, second, third, and fourth reference symbols; performing frequency domain pre-synchronization processing on the paging process according to the frequency deviations, and performing time domain pre-synchronization processing on the paging process according to the timing deviations.

[0114] Specifically, the electronic device can receive the third and fourth reference symbols arranged in chronological order from the pre-synchronization signal for the paging process, specifically receiving the third reference data portion of the third reference symbol and the fourth reference data portion of the fourth reference symbol. The electronic device calculates the frequency deviation based on the channel coefficients of the first reference data portion of the first reference symbol, the second reference data portion of the second reference symbol, the third reference data portion, and the fourth reference data portion. In specific implementation, the electronic device can calculate the first frequency deviation based on the first and second reference symbols, the second frequency deviation based on the second and third reference symbols, and the third frequency deviation based on the third and fourth reference symbols. Then, it weights the first, second, and third frequency deviations to obtain the final frequency deviation. The electronic device performs frequency domain pre-synchronization processing based on the determined frequency deviation. The electronic device can also acquire the timing deviations corresponding to the first, second, third, and fourth reference symbols and use these timing deviations for time domain pre-synchronization processing, thereby achieving pre-synchronization processing for the paging process.

[0115] In this embodiment, by receiving the reference data portions of the first, second, third, and fourth reference symbols, the amount of data received by the electronic device can be reduced. Frequency domain pre-synchronization processing is performed based on the frequency deviation determined by the channel coefficients of the first reference data portion of the first reference symbol, the second reference data portion of the second reference symbol, the third reference data portion, and the fourth reference data portion. Time domain pre-synchronization processing is performed based on the timing deviations corresponding to the first, second, third, and fourth reference symbols. This ensures that the electronic device and the base station can perform paging processing in a time-frequency synchronized state, thus ensuring the communication quality of the electronic device.

[0116] In one embodiment, the pre-synchronization processing method further includes: receiving a fourth reference symbol arranged in chronological order in the pre-synchronization signal when the third signal-to-noise ratio value is not less than a third signal-to-noise ratio threshold or less than a fourth signal-to-noise ratio threshold; and using the first reference symbol, the second reference symbol, the third reference symbol, and the fourth reference symbol as at least some of the reference symbols.

[0117] The third and fourth signal-to-noise ratio (SNR) thresholds are set according to actual needs. For example, the third SNR threshold can be set to 15dB, and the fourth SNR threshold can be set to 10dB, meaning the third SNR threshold is greater than the fourth SNR threshold. Specifically, the electronic device compares the third SNR value with the preset third and fourth SNR thresholds respectively. If the third SNR value is not less than the third SNR threshold or less than the fourth SNR threshold, it indicates that effective pre-synchronization processing cannot be performed using the first, second, and third reference symbols. The electronic device can then continue to receive the fourth reference symbol arranged in chronological order in the pre-synchronization signal. The electronic device uses the received first, second, third, and fourth reference symbols as at least a portion of the reference symbols for pre-synchronization processing, thus enabling pre-synchronization processing using the first, second, third, and fourth reference symbols.

[0118] In this embodiment, if the electronic device continues to receive the fourth reference symbol when the third signal-to-noise ratio value is not less than the third signal-to-noise ratio threshold or less than the fourth signal-to-noise ratio threshold, and uses the first, second, third, and fourth reference symbols as at least some of the reference symbols for pre-synchronization processing, the amount of data received by the electronic device during pre-synchronization processing can be reduced, thereby reducing the power consumption of pre-synchronization processing.

[0119] In one embodiment, receiving a fourth reference symbol arranged in chronological order in a pre-synchronization signal includes: receiving a fourth reference data portion of the fourth reference symbol arranged in chronological order in the pre-synchronization signal for a paging process; performing pre-synchronization processing for the paging process based on at least some of the reference symbols, including: determining a frequency deviation based on the channel coefficients of the first reference data portion in the first reference symbol, the channel coefficients of the second reference data portion in the second reference symbol, the channel coefficients of the third reference data portion in the third reference symbol, and the channel coefficients of the fourth reference data portion; acquiring the timing deviations corresponding to the first, second, third, and fourth reference symbols; performing frequency domain pre-synchronization processing on the paging process based on the frequency deviations, and performing time domain pre-synchronization processing on the paging process based on the timing deviations.

[0120] Specifically, the electronic device can receive the fourth reference symbol arranged in chronological order in the pre-synchronization signal for the paging process, specifically the fourth reference data portion of the fourth reference symbol. Based on the channel coefficients of the first reference data portion of the first reference symbol, the second reference data portion of the second reference symbol, the third reference data portion, and the fourth reference data portion, the electronic device calculates the frequency deviation. Based on the determined frequency deviation, the electronic device performs frequency domain pre-synchronization processing in the frequency domain. In specific implementation, the electronic device can calculate the first frequency deviation based on the first and second reference symbols, the second frequency deviation based on the second and third reference symbols, and the third frequency deviation based on the third and fourth reference symbols. Then, it weights the first, second, and third frequency deviations to obtain the final frequency deviation. The electronic device can also obtain the timing deviations corresponding to the first, second, third, and fourth reference symbols and use these timing deviations to perform pre-synchronization processing in the time domain, thereby achieving pre-synchronization processing for the paging process.

[0121] In this embodiment, by receiving the reference data portions of the first, second, third, and fourth reference symbols, the amount of data received by the electronic device can be reduced. Frequency domain pre-synchronization processing is performed based on the frequency deviation determined by the channel coefficients of the first reference data portion of the first reference symbol, the second reference data portion of the second reference symbol, the third reference data portion, and the fourth reference data portion. Time domain pre-synchronization processing is performed based on the timing deviations corresponding to the first, second, third, and fourth reference symbols. This ensures that the electronic device and the base station can perform paging processing in a time-frequency synchronized state, thus ensuring the communication quality of the electronic device.

[0122] This application also provides an application scenario in which the above-described pre-synchronization processing method is applied. Specifically, the pre-synchronization processing method is applied in this application scenario as follows:

[0123] In LTE IDLE DRX mode, i.e., the idle state of LTE discontinuous reception mode, the terminal needs to periodically receive the paging occasion signal to obtain paging information and complete the called party process. To ensure the reception quality of the paging occasion, the terminal needs to receive downlink signals in advance for pre-synchronization, estimating and adjusting the terminal's timing offset and frequency offset. For example... Figure 5 As shown, during communication between the terminal and the base station, the base station periodically sends a paging occasion signal. Specifically, the period for LTE CDRX (ConnectedDRX, the connected state in non-connection mode) can be 1.28 seconds. It also pre-sends a pre-synchronization signal for the terminal to process, which can be a pre-synchronization subframe signal, i.e., a signal of one subframe length. Currently, the terminal performs pre-synchronization by receiving the complete downlink pre-synchronization subframe. However, in practice, the terminal only needs to estimate the timing offset and frequency offset based on specific reference symbols in the downlink pre-synchronization subframe signal, such as CRS 0, 4, 7, and 11. Therefore, processing the entire downlink pre-synchronization subframe wastes RF (Radio Frequency) power consumption, which accounts for a significant proportion of the terminal's power consumption, resulting in high terminal power consumption.

[0124] Based on this, the pre-synchronization processing method provided in this embodiment updates the RF receiving method, which can achieve the purpose of saving terminal power. Specifically, the terminal's RF does not need to receive the complete pre-synchronization subframe, but only receives the CRS symbols required for pre-synchronization. Specifically, the terminal RF receives at most symbols 0, 4, 7, and 11 of the pre-synchronization subframe. Figure 6As shown, in the pre-synchronization subframe, symbols 0, 4, 7, and 11 are reference symbols used for pre-synchronization processing. The terminal can selectively receive some symbols from symbols 0, 4, 7, and 11 in the pre-synchronization subframe for pre-synchronization processing. The terminal determines whether to receive one or more symbols from RF (0, 4, 7, 11) based on the signal-to-noise ratio (SNR) value (SNR0) assessed during the previous Paging Occasion wake-up. The RF received symbols may or may not contain a CP (Cyclic Prefix). Specifically, if the signal-to-noise ratio (SNR) value SNR0 ≥ the SNR threshold SNR_th0, the control terminal RF only receives symbol 11 in the pre-synchronization subframe. The RF needs to receive the CP portion of symbol 11, and the terminal uses the complete symbol 11 to estimate the timing offset and frequency offset. Otherwise, the RF receives symbol 0 (without CP) and symbol 4 (without CP) and calculates the SNR value SNR1 for these two symbols. If the SNR value SNR1 ≥ the SNR threshold SNR_th1, the RF stops receiving subsequent CRS symbols in the pre-synchronization subframe, and the terminal directly uses symbol 0 and symbol 4 to estimate the timing offset and frequency offset. Otherwise, if the SNR threshold SNR_th2 ≤ the SNR value SNR... If SNR_th1 < SNR_th1, the RF continues to receive symbol 7 (without CP) and calculates the SNR values ​​SNR2 for symbols 0, 4, and 7. If SNR_th3 ≤ SNR2 < SNR_th2, the RF stops receiving subsequent CRS symbols on the pre-synchronization subframe, and the terminal uses symbols 0, 4, and 7 to estimate the timing offset and frequency offset. Otherwise, the RF continues to receive symbol 11 (without CP), and the terminal uses symbols 0, 4, 7, and 11 to estimate the timing offset and frequency offset.

[0125] Furthermore, based on the signal-to-noise ratio (SNR) value SNR0 assessed during the terminal's last Paging Occasion wake-up, the RF receiver determines whether to receive one or more symbols from symbols 0, 4, 7, and 11, including or excluding the CP (Content Component). If the SNR value SNR0 ≥ the SNR threshold SNR_th0, the RF receiver can receive only symbol 11. The RF receiver needs to receive the CP portion of symbol 11, and the terminal uses the complete symbol 11 to estimate the timing offset and frequency offset. Figure 7As shown, symbol 11 can include a cyclic prefix CP and reference data Data. The cyclic prefix is ​​the same as the data at the end of the reference data. The duration of the reference data can be obtained from the duration of the cyclic prefix and the non-cyclic data in the reference data. Non-cyclic data refers to the data in the reference data that is different from the cyclic prefix. For example, the signal-to-noise ratio threshold SNR_th0 = 25dB, and the formula for calculating the signal-to-noise ratio SNR0 can be: 10log(RSRP / (RSSI-RSRP)). RSRP can be calculated based on the filtered h of all RBs (Resource Blocks) on the symbol in the previous Paging Occasion. 2 The sum is calculated; RSSI can be determined based on the signal power on the symbol in the previous Paging Occasion. The frequency offset can be calculated using angle(h_cp*conj(h_data_with_CP_repetition)) / (2*π*t_Length_cp_data_with_CP_repetition). Here, h represents the channel parameters of the corresponding channel, specifically the channel matrix; h_cp is the channel matrix corresponding to the cyclic prefix part of symbol 11; h_data_with_CP_repetition is the channel matrix corresponding to the reference data part of symbol 11; t_Length_cp_data_with_CP_repetition is the duration of the reference data in symbol 11; angle() is the operation for solving the phase angle; and conj() is the operation for solving the conjugate complex number.

[0126] Furthermore, if the signal-to-noise ratio (SNR) value SNR0 ≥ SNR_th0 is not true, then the RF receives symbol 0 (without receiving CP) and symbol 4 (without receiving CP), and calculates the SNR value SNR1 for these two symbols. If the SNR value SNR1 ≥ the SNR_th1 threshold, then the RF stops receiving subsequent CRS symbols of this pre-synchronization subframe, and the terminal uses symbols 0 and 4 to estimate the timing offset and frequency offset. For example, the SNR_th1 threshold is 20dB, and the formula for calculating the SNR value SNR1 can be: 10log(RSRP / (RSSI-RSRP)) for symbols 0 and 4, where RSRP is the sum of all RB filters on symbols 0 and 4. 2The sum of the power of the signals on symbols 0 and 4; RSSI is the sum of the power of the signals on symbols 0 and 4. The frequency offset can be calculated using angle(h_0*conj(h_4)) / 2*π*t_Length_0_4. Here, h represents the channel parameters of the corresponding channel, specifically the channel matrix; h_0 is the channel matrix corresponding to symbol 0, h_4 is the channel matrix corresponding to symbol 4, and t_Length_0_4 is the interval between symbols 0 and 4. Specifically... Figure 8 As shown, the terminal can receive only the reference data portions of symbols 0 and 4, and calculate the frequency offset based on the channel matrix of symbol 0, the channel matrix of symbol 4, and the symbol interval duration between symbol 0 and symbol 4.

[0127] Furthermore, if the signal-to-noise ratio (SNR) value SNR_th2 ≤ SNR1 < SNR threshold SNR_th1, then the RF continues to receive symbol 7 (without receiving CP), and calculates the SNR values ​​SNR2 for symbols 0, 4, and 7. For example, the SNR threshold SNR_th2 = 15dB, and the SNR value SNR2 can be calculated for symbols 0, 4, and 7 as: 20log(RSRP / (RSSI-RSRP)), where RSRP is the sum of all RB filters applied to symbols 0, 4, and 7. 2 The sum of the signal powers on symbols 0, 4, and 7; RSSI is the sum of the signal powers on symbols 0, 4, and 7. For the frequency offset, the estimated frequency offset can be obtained by estimating the frequency offsets of symbols 0 and 4, and estimating the frequency offsets of symbols 4 and 7, and then weighting and combining these estimates. Specifically, the frequency offset can be calculated using α1*Frequency_offset_0_4 + α2*Frequency_offset_4_7, where α1 + α2 = 1, such as α1 = 0.4 and α2 = 0.6. Frequency_offset_0_4 is the frequency offset calculated based on symbols 0 and 4, and Frequency_offset_4_7 is the frequency offset calculated based on symbols 4 and 7. (The specific details are omitted as they are not relevant to the main text.) Figure 9 As shown, the terminal can receive only the reference data portions of symbols 0, 4, and 7, and calculate the frequency offset based on the channel matrix of symbol 0, the channel matrix of symbol 4, the channel matrix of symbol 7, the symbol interval between symbol 0 and symbol 4, and the symbol interval between symbol 4 and symbol 7.

[0128] Furthermore, if the signal-to-noise ratio threshold SNR_th3 ≤ signal-to-noise ratio value SNR2 < signal-to-noise ratio threshold SNR_th2, then the RF stops receiving subsequent CRS symbols on that pre-synchronization subframe, and the terminal uses symbols 0, 4, and 7 to estimate the timing offset and frequency offset. For example, the signal-to-noise ratio threshold SNR_th3 = 10dB.

[0129] Furthermore, if none of the above applies, the RF continues to receive symbol 11 (without CP), and the terminal uses symbols 0, 4, 7 and 11 to estimate the timing offset and frequency offset.

[0130] The pre-synchronization processing method provided in this embodiment involves the terminal's RF receiving at least a portion of the reference symbols in the pre-synchronization subframe for pre-synchronization processing. When only symbol 11 is received, the RF power consumption is 1 / 14 of that for receiving the entire pre-synchronization subframe. The baseband only needs to calculate the timing offset and frequency offset based on one symbol, greatly reducing computational complexity and baseband power consumption. When the RF only receives symbols 0 and 4 in the pre-synchronization subframe and does not receive the CP portion, the RF power consumption is reduced by more than 1 / 7. When the RF only receives symbols 0, 4, and 7 in the pre-synchronization subframe and does not receive the CP portion, the RF power consumption is reduced by more than 3 / 14. When the RF only receives symbols 0, 4, 7, and 11 in the pre-synchronization subframe and does not receive the CP portion, the RF power consumption is reduced by more than 4 / 14, thereby greatly reducing the power consumption of the terminal's RF.

[0131] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0132] Based on the same inventive concept, this application also provides a pre-synchronization processing apparatus for implementing the pre-synchronization processing method described above. The solution provided by this apparatus is similar to the implementation described in the above method; therefore, the specific limitations in one or more pre-synchronization processing apparatus embodiments provided below can be found in the limitations of the pre-synchronization processing method described above, and will not be repeated here.

[0133] In one embodiment, such as Figure 10 As shown, a pre-synchronization processing device 1000 is provided, including: a reference symbol acquisition module 1002 and a reference symbol processing module 1004, wherein:

[0134] The reference symbol acquisition module 1002 is used to receive at least a portion of the reference symbols in the pre-synchronization signal for the paging process based on the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process when in an idle state of discontinuous reception mode.

[0135] Reference symbol processing module 1004 is used to perform pre-synchronization processing for the paging process based on at least some reference symbols.

[0136] In one embodiment, the reference symbol acquisition module 1002 is further configured to, in the idle state of the discontinuous reception mode, determine the signal characteristic parameters corresponding to the pre-synchronization signal for the paging process; and obtain at least a portion of the reference symbols in the pre-synchronization signal that satisfy the pre-synchronization processing conditions based on the signal characteristic parameters.

[0137] In one embodiment, the signal characteristic parameter corresponding to the pre-synchronization signal for the paging process is the first signal-to-noise ratio value corresponding to the previous pre-synchronization signal for the previous paging process.

[0138] In one embodiment, the reference symbol acquisition module 1002 is further configured to receive at least one reference symbol for pre-synchronization processing from the pre-synchronization signals for the paging process when the first signal-to-noise ratio value is greater than or equal to the first signal-to-noise ratio threshold; and to use the received at least one reference symbol as at least part of the aforementioned reference symbols.

[0139] In one embodiment, the reference symbol acquisition module 1002 is further configured to, when the first signal-to-noise ratio (SNR) value is less than the first SNR threshold, determine a second SNR value for the entire set of two reference symbols in the pre-synchronization signal for the paging process; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal for the previous paging process; when the second SNR value is greater than or equal to the second SNR threshold, obtain at least a portion of the reference symbols based on at least two reference symbols in the pre-synchronization signal; the at least two reference symbols include two reference symbols.

[0140] In one embodiment, the reference symbol acquisition module 1002 is further configured to obtain at least a portion of the reference symbols based on at least four reference symbols in the pre-synchronization signal when the second signal-to-noise ratio value is less than the third signal-to-noise ratio threshold; the third signal-to-noise ratio threshold is less than the second signal-to-noise ratio threshold; and the at least four reference symbols include two reference symbols.

[0141] In one embodiment, the reference symbol acquisition module 1002 is further configured to determine a third signal-to-noise ratio (SNR) value for the entirety of three different reference symbols in the pre-synchronization signal for the paging process when the first SNR value is less than a first SNR threshold and the second SNR value is less than a second SNR threshold but greater than or equal to a third SNR threshold; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal for the previous paging process; the second SNR value is the SNR value for the entirety of two reference symbols among the three different reference symbols; when the third SNR value is less than a third SNR threshold but greater than or equal to a fourth SNR threshold, at least a portion of the reference symbols are obtained based on at least three reference symbols in the pre-synchronization signal; the at least three reference symbols include three different reference symbols.

[0142] In one embodiment, the reference symbol acquisition module 1002 is further configured to determine a third signal-to-noise ratio (SNR) value for the entirety of three different reference symbols in the pre-synchronization signal for the paging process when the first SNR value is less than a first SNR threshold and the second SNR value is less than a second SNR threshold but greater than or equal to a third SNR threshold; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal for the previous paging process; the second SNR value is the SNR value of the entirety of two reference symbols among the three different reference symbols; when the third SNR value is not less than the third SNR threshold or less than a fourth SNR threshold, at least a portion of the reference symbols are obtained based on at least four reference symbols in the pre-synchronization signal; the at least four reference symbols include three different reference symbols.

[0143] In one embodiment, the reference symbol acquisition module 1002 is further configured to determine the target reference symbol corresponding to the pre-synchronization signal for the paging process; acquire the reference signal received power and received signal strength index of the target reference symbol; calculate the signal-to-noise ratio value of the target reference symbol based on the reference signal received power and received signal strength index, and obtain the signal characteristic parameters corresponding to the pre-synchronization signal based on the signal-to-noise ratio value.

[0144] In one embodiment, the reference symbol processing module 1004 is further configured to determine the frequency deviation based on at least some reference symbols; obtain the timing deviation corresponding to at least some reference symbols; perform frequency domain pre-synchronization processing on the paging process based on the frequency deviation; and perform time domain pre-synchronization processing on the paging process based on the timing deviation.

[0145] In one embodiment, the pre-synchronization signal for the paging process includes four different reference symbols arranged in chronological order; the reference symbol acquisition module 1002 is further configured to, in an idle state of discontinuous reception mode, determine a first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal for the previous paging process; if the first SNR value is less than a first SNR threshold, sequentially receive and acquire the first and second reference symbols arranged in chronological order in the pre-synchronization signal; determine a second SNR value for the first and second reference symbols as a whole; if the second SNR value is greater than or equal to the second SNR threshold, use the first and second reference symbols as at least some of the reference symbols.

[0146] In one embodiment, the reference symbol acquisition module 1002 is further configured to sequentially receive the first reference data portion of the first reference symbol and the second reference data portion of the second reference symbol arranged in chronological order in the pre-synchronization signal; the reference symbol processing module 1004 is further configured to determine the frequency deviation based on the channel coefficient of the first reference data portion, the channel coefficient of the second reference data portion, and the symbol interval duration between the first reference symbol and the second reference symbol; obtain the timing deviation corresponding to the first reference symbol and the second reference symbol; perform frequency domain pre-synchronization processing on the paging process according to the frequency deviation, and perform time domain pre-synchronization processing on the paging process according to the timing deviation.

[0147] In one embodiment, the reference symbol acquisition module 1002 is further configured to, when the first signal-to-noise ratio value is greater than or equal to the first signal-to-noise ratio threshold, receive and acquire the fourth reference symbol arranged in chronological order in the pre-synchronization signal for the paging process; and obtain at least some reference symbols based on the fourth reference symbol.

[0148] In one embodiment, the reference symbol acquisition module 1002 is further configured to receive the global symbol content of the fourth reference symbol arranged in chronological order in the pre-synchronization signal for the paging process; the global symbol content includes a cyclic prefix portion and a fourth reference data portion; the reference symbol processing module 1004 is further configured to determine the frequency deviation based on the channel coefficient of the cyclic prefix portion, the channel coefficient of the fourth reference data portion, and the duration of the fourth reference data portion; obtain the timing deviation corresponding to the fourth reference symbol; perform frequency domain pre-synchronization processing on the paging process according to the frequency deviation, and perform time domain pre-synchronization processing on the paging process according to the timing deviation.

[0149] In one embodiment, the reference symbol acquisition module 1002 is further configured to: receive and acquire a third reference symbol arranged in chronological order in the pre-synchronization signal when the second signal-to-noise ratio value is less than the second signal-to-noise ratio threshold and greater than or equal to the third signal-to-noise ratio threshold; determine the third signal-to-noise ratio value of the first reference symbol, the second reference symbol, and the third reference symbol as a whole; and, when the third signal-to-noise ratio value is less than the third signal-to-noise ratio threshold and greater than or equal to the fourth signal-to-noise ratio threshold, use the first reference symbol, the second reference symbol, and the third reference symbol as at least some of the reference symbols.

[0150] In one embodiment, the values ​​of the first signal-to-noise ratio threshold, the second signal-to-noise ratio threshold, the third signal-to-noise ratio threshold, and the fourth signal-to-noise ratio threshold gradually decrease.

[0151] In one embodiment, the reference symbol acquisition module 1002 is further configured to receive the third reference data portion of the third reference symbol arranged in chronological order in the pre-synchronization signal for the paging process; the reference symbol processing module 1004 is further configured to determine the frequency deviation based on the channel coefficients of the first reference data portion of the first reference symbol, the channel coefficients of the second reference data portion of the second reference symbol, and the channel coefficients of the third reference data portion; acquire the timing deviations corresponding to the first, second, and third reference symbols; perform frequency domain pre-synchronization processing on the paging process according to the frequency deviation, and perform time domain pre-synchronization processing on the paging process according to the timing deviation.

[0152] In one embodiment, the reference symbol processing module 1004 is further configured to: determine a first frequency deviation based on the channel coefficients of the first reference data portion in the first reference symbol, the channel coefficients of the second reference data portion in the second reference symbol, and the symbol interval duration between the first and second reference symbols; determine a second frequency deviation based on the channel coefficients of the second reference data portion, the channel coefficients of the third reference data portion, and the symbol interval duration between the second and third reference symbols; and calculate a frequency deviation by weighting the first and second frequency deviations.

[0153] In one embodiment, the reference symbol acquisition module 1002 is further configured to, when the second signal-to-noise ratio value is less than the second signal-to-noise ratio threshold and less than the third signal-to-noise ratio threshold, sequentially receive and acquire the third and fourth reference symbols arranged in chronological order in the pre-synchronization signal; and use the first, second, third, and fourth reference symbols as at least some of the reference symbols.

[0154] In one embodiment, the reference symbol acquisition module 1002 is further configured to sequentially receive the third reference data portion of the third reference symbol and the fourth reference data portion of the fourth reference symbol arranged in chronological order in the pre-synchronization signal; the reference symbol processing module 1004 is further configured to determine the frequency deviation based on the channel coefficients of the first reference data portion of the first reference symbol, the channel coefficients of the second reference data portion of the second reference symbol, the channel coefficients of the third reference data portion, and the channel coefficients of the fourth reference data portion; acquire the timing deviations corresponding to the first, second, third, and fourth reference symbols; perform frequency domain pre-synchronization processing on the paging process according to the frequency deviation, and perform time domain pre-synchronization processing on the paging process according to the timing deviation.

[0155] In one embodiment, the reference symbol acquisition module 1002 is further configured to receive the fourth reference symbol arranged in chronological order in the pre-synchronization signal when the third signal-to-noise ratio value is not less than the third signal-to-noise ratio threshold or less than the fourth signal-to-noise ratio threshold; and to use the first reference symbol, the second reference symbol, the third reference symbol and the fourth reference symbol as at least some of the reference symbols.

[0156] In one embodiment, the reference symbol acquisition module 1002 is further configured to receive the fourth reference data portion of the fourth reference symbol arranged in chronological order in the pre-synchronization signal for the paging process; the reference symbol processing module 1004 is further configured to determine the frequency deviation based on the channel coefficients of the first reference data portion in the first reference symbol, the channel coefficients of the second reference data portion in the second reference symbol, the channel coefficients of the third reference data portion in the third reference symbol, and the channel coefficients of the fourth reference data portion; acquire the timing deviations corresponding to the first, second, third, and fourth reference symbols; perform frequency domain pre-synchronization processing on the paging process according to the frequency deviation, and perform time domain pre-synchronization processing on the paging process according to the timing deviation.

[0157] Each module in the aforementioned pre-synchronization processing device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0158] In one embodiment, an electronic device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 11As shown, the electronic device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a pre-synchronization processing method.

[0159] Those skilled in the art will understand that Figure 11 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the electronic device to which the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0160] This application also provides a computer-readable storage medium. One or more non-volatile computer-readable storage media containing computer-executable instructions, which, when executed by one or more processors, cause the processors to perform the steps of a pre-synchronization processing method.

[0161] This application also provides a computer program product containing instructions that, when run on a computer, cause the computer to perform a pre-synchronization processing method.

[0162] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data shall comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0163] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0164] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0165] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A pre-synchronization processing method, characterized in that, include: In the idle state of discontinuous reception mode, determine the first signal-to-noise ratio value corresponding to the previous pre-synchronization signal for the previous paging process; The first signal-to-noise ratio value is the signal characteristic parameter corresponding to the previous pre-synchronization signal, which refers to the pre-synchronization signal for the previous paging process. When the first signal-to-noise ratio value is less than the first signal-to-noise ratio threshold, the first reference symbol and the second reference symbol arranged in chronological order in the pre-synchronization signal for the paging process are received sequentially; the pre-synchronization signal for the paging process includes four different reference symbols arranged in chronological order. A second signal-to-noise ratio (SNR) value is determined for the first reference symbol and the second reference symbol as a whole; the second SNR value is obtained by summing the SNR values ​​of the first reference symbol and the second reference symbol respectively. When the second signal-to-noise ratio value is greater than or equal to the second signal-to-noise ratio threshold, the first reference symbol and the second reference symbol are used as at least some of the reference symbols; Based on at least some of the reference symbols, pre-synchronization processing is performed on the paging process.

2. The method according to claim 1, characterized in that, The reference symbols carried in the pre-synchronization signal include the cell reference symbol (CRS).

3. The method according to claim 1, characterized in that, The method further includes: When the first signal-to-noise ratio value is greater than or equal to the first signal-to-noise ratio threshold, at least one reference symbol for pre-synchronization processing in the pre-synchronization signal for the paging process is received as the at least partial reference symbol.

4. The method according to claim 1, characterized in that, The method further includes: If the first signal-to-noise ratio (SNR) value is less than the first SNR threshold, a second SNR value is determined for the entirety of the two reference symbols in the pre-synchronization signal of the paging process; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal of the previous paging process. When the second signal-to-noise ratio value is greater than or equal to the second signal-to-noise ratio threshold, at least a portion of the reference symbols are obtained based on at least two reference symbols in the pre-synchronization signal; the at least two reference symbols include the two reference symbols.

5. The method according to claim 4, characterized in that, The method further includes: When the second signal-to-noise ratio (SNR) value is less than the third SNR threshold, at least some reference symbols are obtained based on at least four reference symbols in the pre-synchronization signal; the third SNR threshold is less than the second SNR threshold; the at least four reference symbols include the two reference symbols.

6. The method according to claim 1, characterized in that, The method further includes: If the first signal-to-noise ratio (SNR) value is less than the first SNR threshold, and the second SNR value is less than the second SNR threshold but greater than or equal to the third SNR threshold, a third SNR value is determined for the entirety of the three different reference symbols in the pre-synchronization signal of the paging process; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal of the previous paging process; the second SNR value is the SNR value of the entirety of two reference symbols among the three different reference symbols; When the third signal-to-noise ratio value is less than the third signal-to-noise ratio threshold and greater than or equal to the fourth signal-to-noise ratio threshold, at least some reference symbols are obtained based on at least three reference symbols in the pre-synchronization signal; the at least three reference symbols include the three different reference symbols.

7. The method according to claim 1, characterized in that, The method further includes: If the first signal-to-noise ratio (SNR) value is less than the first SNR threshold, and the second SNR value is less than the second SNR threshold but greater than or equal to the third SNR threshold, a third SNR value is determined for the entirety of the three different reference symbols in the pre-synchronization signal of the paging process; the first SNR value is the SNR value corresponding to the previous pre-synchronization signal of the previous paging process; the second SNR value is the SNR value of the entirety of two reference symbols among the three different reference symbols; When the third signal-to-noise ratio value is less than the fourth signal-to-noise ratio threshold, at least some reference symbols are obtained based on at least four reference symbols in the pre-synchronization signal; the at least four reference symbols include the three different reference symbols.

8. The method according to claim 1, characterized in that, The method further includes: Determine the target reference symbol corresponding to the pre-synchronization signal for the paging process; Obtain the reference signal received power and received signal strength indices of the target reference symbol; The signal-to-noise ratio (SNR) of the target reference symbol is calculated based on the received power of the reference signal and the received signal strength index, and the signal characteristic parameters corresponding to the pre-synchronization signal are obtained based on the SNR.

9. The method according to any one of claims 1 to 8, characterized in that, The pre-synchronization processing for the paging process based on at least some of the reference symbols includes: The frequency deviation is determined based on at least some of the reference symbols; Obtain the timing deviation corresponding to at least some of the reference symbols; The paging process is pre-synchronized in the frequency domain based on the frequency deviation, and pre-synchronized in the time domain based on the timing deviation.

10. The method according to claim 1, characterized in that, The pre-synchronization signal includes a pre-synchronization subframe signal, which includes 14 symbols arranged in chronological order. Each symbol is numbered from 0 to 13. The first reference symbol includes symbol 0 in the pre-synchronization subframe signal, and the second reference symbol includes symbol 4 in the pre-synchronization subframe signal.

11. The method according to claim 1, characterized in that, The method further includes: If the first signal-to-noise ratio value is greater than or equal to the first signal-to-noise ratio threshold, the fourth reference symbol arranged in chronological order in the pre-synchronization signal for the paging process is received. Based on the fourth reference symbol, at least some reference symbols are obtained.

12. The method according to claim 1, characterized in that, The method further includes: If the second signal-to-noise ratio value is less than the second signal-to-noise ratio threshold and greater than or equal to the third signal-to-noise ratio threshold, the third reference symbol arranged in chronological order in the pre-synchronization signal is received. Determine the third signal-to-noise ratio value for the entirety of the first reference symbol, the second reference symbol, and the third reference symbol; If the third signal-to-noise ratio value is less than the third signal-to-noise ratio threshold and greater than or equal to the fourth signal-to-noise ratio threshold, the first reference symbol, the second reference symbol, and the third reference symbol shall be used as at least some of the reference symbols.

13. The method according to claim 12, characterized in that, The values ​​of the first signal-to-noise ratio threshold, the second signal-to-noise ratio threshold, the third signal-to-noise ratio threshold, and the fourth signal-to-noise ratio threshold gradually decrease.

14. The method according to claim 1, characterized in that, The method further includes: When the second signal-to-noise ratio value is less than the second signal-to-noise ratio threshold and less than the third signal-to-noise ratio threshold, the third and fourth reference symbols arranged in time order in the pre-synchronization signal are received sequentially. The first reference symbol, the second reference symbol, the third reference symbol, and the fourth reference symbol are used as at least some of the reference symbols.

15. The method according to claim 12, characterized in that, The method further includes: If the third signal-to-noise ratio value is less than the fourth signal-to-noise ratio threshold, the fourth reference symbol arranged in chronological order in the pre-synchronization signal is received. The first reference symbol, the second reference symbol, the third reference symbol, and the fourth reference symbol are used as at least some of the reference symbols.

16. A pre-synchronization processing device, characterized in that, include: The reference symbol acquisition module is configured to, in an idle state of discontinuous reception mode, determine a first signal-to-noise ratio (SNR) value corresponding to the previous pre-synchronization signal for the previous paging process; the first SNR value is a signal characteristic parameter corresponding to the previous pre-synchronization signal, which refers to the pre-synchronization signal for the previous paging process; if the first SNR value is less than a first SNR threshold, sequentially receive and acquire the first and second reference symbols arranged in chronological order in the pre-synchronization signal for the paging process; the pre-synchronization signal for the paging process includes four different reference symbols arranged in chronological order; determine a second SNR value for the first and second reference symbols as a whole; the second SNR value is obtained by summing the SNR values ​​of the first and second reference symbols respectively; When the second signal-to-noise ratio value is greater than or equal to the second signal-to-noise ratio threshold, the first reference symbol and the second reference symbol are used as at least some of the reference symbols; A reference symbol processing module is used to perform pre-synchronization processing on the paging process based on at least some of the reference symbols.

17. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the computer program is executed by the processor, the steps of the pre-synchronization processing method as described in any one of claims 1 to 15 are performed.

18. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 15.

19. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 15.

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