Method, device, vehicle-mounted equipment and terminal for sending and receiving reference signals

Abstract

The present disclosure provides a method, device, vehicle-mounted equipment and terminal for sending and receiving reference signals, wherein the method for sending reference signals includes: determining the transmission configuration information of the synchronization signal block VSSB, wherein the transmission configuration information includes: the transmission period of the VSSB, the time domain position of the VSSB transmission time window within the transmission period; according to the transmission configuration information, N VSSBs are sent within the periodically occurring VSSB transmission time window, wherein N is an integer greater than or equal to 1; wherein each VSSB includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS. The method for sending reference signals provided by the present disclosure can ensure that the time domain synchronization between the vehicle-mounted equipment and the receiving terminal in the NR V2X system is quickly completed.

Description

[0001] Divisional application statement

[0002] This application is a divisional application based on the Chinese invention patent application with application number 201880001758.3, application date August 10, 2018, and invention name “Method, device, vehicle-mounted equipment and terminal for sending and receiving reference signals”. Technical Field

[0003] The present disclosure relates to the field of communication technology, and in particular to a method, device, vehicle-mounted equipment and terminal for sending and receiving a reference signal. Background Art

[0004] In LTE V2X (Vehicle-to-Everything) technology, for example, in V2V (Vehicle-to-Vehicle) application scenarios, due to the possibility of two vehicles meeting each other, the relative speed becomes almost twice the speed of a single vehicle, resulting in a larger Doppler shift value. In order to combat the larger Doppler shift value, in a 1ms subframe, the PSSS (Primary Sidelink Synchronization Signal) and SSSS (Secondary Sidelink Synchronization Signal) of V2X both occupy two symbols, and the PSBCH (Physical Sidelink Broadcast Channel) occupies 5 symbols, and 3 symbols of DMRS (Demodulation Reference Signal) are sent in the middle for demodulation of PSBCH. In addition, a 1ms subframe contains two slots, each containing 7 symbols. Among these 14 symbols, the first symbol is used for AGC (Automatic Gain Control), that is, the device receiving PSSS / SSSS / PSBCH adjusts the power gain, and the last symbol is used to counteract the transmission and reception delay caused by devices in different locations. Moreover, the transmission period of the synchronization signal and broadcast channel is 160ms, that is, 1ms out of every 160ms is used to send a synchronization signal and a broadcast channel frame structure. In addition, since LTE sidelink uses features similar to LTE uplink, the uplink uses SC-FDMA (Single-carrier Frequency-Division Multiple Access), so DMRS and PSBCH are sent in different symbols.

[0005] In the New Radio Access technology (NR) spectrum, each time slot includes 14 symbols, and the number of slots in 1 millisecond (ms) is determined by the subcarrier spacing. For example, when the subcarrier spacing is 15 kilohertz (KHz), 1ms contains 1 slot; when the subcarrier spacing is 30KHz, 1ms contains 2 slots; and when the subcarrier spacing is 60KHz, 1ms contains 4 slots, and so on.

[0006] In NR, in order to reduce the reference signals that are always on, thereby reducing the overhead, a synchronization signal block (SSB) is proposed. Each SSB occupies 4 consecutive symbols, which are the primary synchronization signal (PSS), physical broadcast channel (PBCH), secondary synchronization signal (SSS) and PBCH in order. Among them, the 12 resource blocks (RBs) in the middle of the symbol where the SSS is located are SSS, and the 4 RBs on both sides are PBCH. Some subcarriers in the PBCH are demodulation reference signals (DMRS). The subcarrier spacing of the synchronization signal block can be 15KHz, 30KHz, 120KHz and 240KHz. All synchronization signal blocks are sent within 5ms. In order to support beam transmission, each beam needs to send SSB when there is a beam, so the maximum number of synchronization signal blocks that can be sent within 5ms is 4 (when the carrier frequency is below 3GHz) or 8 (when the carrier frequency is 3GHz to 6GHz) or 64 (when the carrier frequency is above 6GHz), and the multiple SSBs within 5ms are called synchronization block sets (SSB burst sets). The transmission period of SSB burst sets can be 5ms, 10ms, 20ms, 40ms, etc.

[0007] In the 5G NR system, V2X technology is also introduced, but the transmission of synchronization signals and broadcast channels has not yet been defined. Summary of the invention

[0008] In order to overcome the problems existing in the related art, the embodiments of the present disclosure provide a method, device, vehicle-mounted equipment and terminal for sending and receiving reference signals, which effectively counteract the Doppler frequency shift effect occurring between the vehicle-mounted equipment and the receiving terminal by dynamically changing the transmission characteristics of VSSB.

[0009] According to a first aspect of an embodiment of the present disclosure, a method for sending a reference signal is provided, the method comprising:

[0010] Determine transmission configuration information of a synchronization signal block VSSB in a new air interface vehicle-to-everything (NR) V2X system, wherein the transmission configuration information includes: a transmission period of the VSSB and a time domain position of a VSSB transmission time window within the transmission period;

[0011] According to the transmission configuration information, N of the VSSBs are sent within the periodically occurring VSSB sending time window, where N is an integer greater than or equal to 1;

[0012] Each of the VSSBs includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS.

[0013] According to a second aspect of an embodiment of the present disclosure, a method for receiving a reference signal is provided, the method comprising:

[0014] Detect the synchronization signal block VSSB in the new radio interface vehicle network NR V2X system sent by the vehicle equipment;

[0015] Obtain VSSB index information from the detected target VSSB;

[0016] Determine the time domain position corresponding to the target VSSB according to the VSSB index information;

[0017] Time domain synchronization is performed with the vehicle-mounted device according to the time domain position.

[0018] According to a third aspect of an embodiment of the present disclosure, a device for sending a reference signal is provided, the device including:

[0019] A configuration information determination module is configured to determine transmission configuration information of a synchronization signal block VSSB in a new air interface vehicle network NR V2X system, wherein the transmission configuration information includes: a transmission period of the VSSB and a time domain position of a VSSB transmission time window within the transmission period;

[0020] A sending module, configured to send N of the VSSBs in the periodically occurring VSSB sending time window according to the transmission configuration information, where N is an integer greater than or equal to 1;

[0021] Each of the VSSBs includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS.

[0022] According to a fourth aspect of an embodiment of the present disclosure, a device for receiving a reference signal is provided, the device including:

[0023] A detection module is configured to detect a synchronization signal block VSSB in a new radio vehicle network NRV2X system sent by a vehicle-mounted device;

[0024] An index information acquisition module, configured to acquire VSSB index information from the detected target VSSB;

[0025] A position determination module, configured to determine a time domain position corresponding to the target VSSB according to the VSSB index information;

[0026] A synchronization module is configured to perform time domain synchronization with the vehicle-mounted device according to the time domain position.

[0027] According to a fifth aspect of an embodiment of the present disclosure, there is provided a non-temporary computer-readable storage medium on which computer instructions are stored, and when the instructions are executed by a processor, the steps of any method described in the first aspect are implemented.

[0028] According to a sixth aspect of an embodiment of the present disclosure, there is provided a non-temporary computer-readable storage medium on which computer instructions are stored, and when the instructions are executed by a processor, the steps of any method described in the second aspect are implemented.

[0029] According to a seventh aspect of an embodiment of the present disclosure, there is provided a vehicle-mounted device, including:

[0030] processor;

[0031] a memory for storing processor-executable instructions;

[0032] Wherein, the processor is configured to:

[0033] Determine transmission configuration information of a synchronization signal block VSSB in a new air interface vehicle-to-everything (NR) V2X system, wherein the transmission configuration information includes: a transmission period of the VSSB and a time domain position of a VSSB transmission time window within the transmission period;

[0034] According to the transmission configuration information, N of the VSSBs are sent within the periodically occurring VSSB sending time window, where N is an integer greater than or equal to 1;

[0035] Each of the VSSBs includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS.

[0036] According to an eighth aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0037] processor;

[0038] a memory for storing processor-executable instructions;

[0039] Wherein, the processor is configured to:

[0040] Detect the synchronization signal block VSSB in the new radio interface vehicle network NR V2X system sent by the vehicle equipment;

[0041] Obtain VSSB index information from the detected target VSSB;

[0042] Determine the time domain position corresponding to the target VSSB according to the VSSB index information;

[0043] The time domain synchronization is performed with the vehicle-mounted device according to the time domain position. The technical solution provided by the embodiment of the present disclosure may have the following beneficial effects:

[0044] The present disclosure designs a reference signal transmission method for a 5G NR V2X system. The vehicle-mounted device can send a reference signal to receiving terminals in different directions through a beam in a synchronization signal block VSSB structure within a periodic VSSB sending time window, so that after receiving the VSSB sent by the vehicle-mounted device, the receiving terminal can use the reference signal in the VSSB and the index information carried in the VSSB to quickly synchronize with the vehicle-mounted device in the time domain, thereby improving the time domain synchronization efficiency between the receiving terminal and the vehicle-mounted device, reducing the time spent on signal synchronization, and ensuring the immediacy of communication between the vehicle-mounted device and the receiving terminal.

[0045] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0047] Figure 1 The present disclosure provides a schematic diagram of an application scenario of an NR V2X system according to an exemplary embodiment.

[0048] Figure 2 The present invention is a flowchart of a method for sending a reference signal according to an exemplary embodiment.

[0049] Figure 3 The present invention is a flowchart of another method for sending a reference signal according to an exemplary embodiment.

[0050] Figure 4The present invention is a flowchart of another method for sending a reference signal according to an exemplary embodiment.

[0051] Figure 5 The present invention is a flowchart of another method for sending a reference signal according to an exemplary embodiment.

[0052] Figure 6-1 It is a schematic diagram of an application scenario of sending a reference signal according to an exemplary embodiment of the present disclosure.

[0053] Figure 6-2 The diagram is a schematic diagram of another application scenario of sending a reference signal according to an exemplary embodiment of the present disclosure.

[0054] Figure 6-3 The diagram is a schematic diagram of another application scenario of sending a reference signal according to an exemplary embodiment of the present disclosure.

[0055] Figure 6-4 The diagram is a schematic diagram of another application scenario of sending a reference signal according to an exemplary embodiment of the present disclosure.

[0056] Figure 7 It is a flow chart of another method for sending a reference signal according to an exemplary embodiment of the present disclosure.

[0057] Figure 8 It is a flow chart of a method for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0058] Fig. 9 It is a flow chart of another method for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0059] Fig.10 It is a flow chart of another method for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0060] Fig.11 It is a flow chart of another method for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0061] Fig.12 The present invention is a block diagram of a device for sending a reference signal according to an exemplary embodiment.

[0062] Fig.13 It is a block diagram of another device for sending a reference signal according to an exemplary embodiment of the present disclosure.

[0063] Fig.14 It is a block diagram of another device for sending a reference signal according to an exemplary embodiment of the present disclosure.

[0064] Fig.15It is a block diagram of another device for sending a reference signal according to an exemplary embodiment of the present disclosure.

[0065] Fig.16 It is a block diagram of another device for sending a reference signal according to an exemplary embodiment of the present disclosure.

[0066] Fig.17 It is a block diagram of a device for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0067] Fig.18 It is a block diagram of another device for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0068] Fig.19 It is a block diagram of another device for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0069] Fig. 20 It is a block diagram of another device for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0070] Fig.21 It is a block diagram of another device for receiving a reference signal according to an exemplary embodiment of the present disclosure.

[0071] Fig. 22 It is a structural schematic diagram of a vehicle-mounted device according to an exemplary embodiment of the present disclosure.

[0072] Fig.23 It is a structural schematic diagram of a terminal according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0073] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0074] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0075] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0076] The execution subjects involved in the present disclosure include: vehicle-mounted equipment and receiving terminals in the NR V2X system, wherein V2X includes: V2V vehicle-to-vehicle communication, V2I (Vehicle to Infrastructure) representing communication between vehicles and roadside units, V2N (Vehicle to Nomadic Device) representing communication between vehicles and mobile terminals of drivers, V2P (Vehicle to Pedestrain) representing communication between vehicles and mobile terminals of pedestrians, etc., see Figure 1 According to an application scenario diagram shown in an exemplary embodiment, the above-mentioned receiving terminal can be a vehicle, a roadside infrastructure device, a pedestrian's mobile terminal, etc. In the specific implementation process, the vehicle-mounted device and the receiving terminal are independent of each other, but are interconnected to jointly implement the technical solution provided by the present disclosure.

[0077] Based on the above application scenarios, the present disclosure provides a method for sending a reference signal, which dynamically changes the transmission characteristics of the VSSB to counteract the Doppler frequency shift effect occurring between the vehicle-mounted device and the receiving terminal.

[0078] The so-called Doppler shift effect refers to the phenomenon that when there is relative motion between the transmitting source and the receiving end, the frequency of the information transmitted by the transmitting source received by the receiving end is different from the frequency of the information transmitted by the transmitting source. This phenomenon is called the Doppler shift effect, and the difference between the receiving frequency and the transmitting frequency is called the Doppler shift amount. In real life, when wireless communication is carried out on a highly moving object (such as a high-speed train), the signal quality will decrease, which is an example of the Doppler shift phenomenon of electromagnetic waves.

[0079] See also Figure 2 According to a flowchart of a method for sending a reference signal according to an exemplary embodiment, which is applied to a vehicle-mounted device, the method may include the following steps:

[0080] In step 11, transmission configuration information of a synchronization signal block VSSB in a new air interface vehicle-to-everything (NR) V2X system is determined, where the transmission configuration information includes: a transmission period of the VSSB and a time domain position of a VSSB transmission time window within the transmission period;

[0081] In the present disclosure, the SSB used in the NR V2X system is referred to as VSSB. Each of the VSSBs includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS.

[0082] In step 12, according to the transmission configuration information, N VSSBs are sent within the periodically occurring VSSB sending time window, where N is an integer greater than or equal to 1.

[0083] Assuming that the above-mentioned VSSB sending cycle is 160ms, a VSSB sending time window is set at a fixed position of each sending cycle in the present disclosure. For example, a sending window with a duration of 5ms is set at the 50ms position of 160ms. The position of the VSSB sending time window in the VSSB sending cycle can be expressed as 50ms to 54ms.

[0084] In the present disclosure, when a VSSB transmission time window arrives, the vehicle-mounted device transmits the above N VSSBs via wave speed.

[0085] In the present disclosure, before the vehicle-mounted device prepares to send a VSSB, it predicts the possible Doppler frequency shift based on the speed information of the vehicle-mounted device, and then counteracts the Doppler frequency shift effect by changing the time domain density of the reference signal corresponding to the VSSB, ensuring that the VSSB sent by the vehicle-mounted device can be detected by the receiving terminal.

[0086] See also Figure 3 According to a flowchart of another method for sending a reference signal shown in an exemplary embodiment, the above step 12 may include:

[0087] In step 121, determining target carrier frequency information for sending the VSSB;

[0088] The target carrier frequency information includes: the frequency band and bandwidth to which the VSSB transmission carrier frequency belongs.

[0089] In the present disclosure, the vehicle-mounted device may determine the target carrier frequency information for sending the VSSB in any of the following ways:

[0090] Method 1: Determine the target carrier frequency information based on preset resource configuration information

[0091] For example, the carrier frequency information indicating the VSSB transmission is preset in the chip of the vehicle-mounted device, and the vehicle-mounted device can directly read the target carrier frequency information from the chip.

[0092] Method 2: Determine the target carrier frequency information based on the resource configuration information sent by the base station

[0093] See also Figure 4 According to a flowchart of another method for sending a reference signal shown in an exemplary embodiment, the above step 121 may include:

[0094] In step 1211, receiving resource configuration information sent by the base station, the resource configuration information is used to inform the vehicle-mounted device to use the configured resources to send the VSSB;

[0095] As described above, the transmission of VSSB in the present disclosure is carried out using the preset resources configured by the base station. In one embodiment, the resource block configured by the base station for the vehicle-mounted equipment may be in the same carrier frequency as the resources used by the base station. In this case, the above resource configuration information does not need to indicate the carrier frequency band information, but only needs to indicate the location information of the RB (resource block).

[0096] If the resource block configured by the base station for the on-board device and the resource used by the base station are in different carrier frequencies, the above resource configuration information needs to indicate the carrier frequency band information and the resource block position information.

[0097] In step 1212, the target carrier frequency information is determined according to the resource configuration information.

[0098] Correspondingly, if the vehicle-mounted device only obtains the resource block location information from the above resource configuration information, according to the protocol provisions, the current working carrier frequency for communicating with the base station is determined as the above target carrier frequency for sending VSSB.

[0099] In another embodiment, the vehicle-mounted device determines the target carrier frequency according to the carrier frequency band information notified by the base station.

[0100] In the present disclosure, the frequency band to which the carrier frequency configured by the system for sending VSSB belongs may include: frequency bands below 3 GHz, 3 GHz to 6 GHz, and above 6 GHz.

[0101] In step 122, a target reference signal time domain density corresponding to each VSSB to be sent is determined according to the target carrier frequency information and the current speed information of the vehicle-mounted device;

[0102] In the present disclosure, the reference signal time domain density can be expressed as: the ratio of the total number of symbols occupied by the reference signal to the duration of one VSSB. The reference signal includes: the primary link synchronization signal PSSS, the secondary link synchronization signal SSSS and the demodulation reference signal DMRS. The higher the reference signal time domain density, the greater the Doppler frequency shift can be counteracted.

[0103] In the present disclosure, the current speed information of the vehicle-mounted device may include: the current speed of the vehicle in which the vehicle-mounted device is located; or the relative speed between the vehicle-mounted device and the target receiving terminal.

[0104] The Doppler frequency shift is estimated according to the current speed information, and then the time domain density of the reference signal in VSSB is adjusted to counteract the Doppler frequency effect.

[0105] See also Figure 5 According to a flowchart of another method for sending a reference signal shown in an exemplary embodiment, the above step 122 may include:

[0106] In step 1221, the relative speed is compared with a preset speed threshold to obtain a comparison result;

[0107] In step 1222, the target reference signal time domain density is determined according to the target carrier frequency information and the comparison result.

[0108] In the disclosed embodiment, time domain density levels may be used to represent time domain densities of reference signals of different sizes, where a higher level represents a larger corresponding time domain density of the reference signal.

[0109] In the NR V2X system, for each carrier frequency band, such as 3 GHz, the protocol can agree on a preset number of reference signal time domain density levels, each time domain density level corresponding to a preset speed matching condition.

[0110] When the target carrier frequency is determined, the corresponding relationship between the time domain density level and the preset speed matching condition can be determined according to the protocol provisions.

[0111] Taking the target frequency band as the 3GHz frequency band as an example, assuming that for the 3GHz frequency band, the system stipulates two speed thresholds with increasing values: V10 and V20; and the above three speed thresholds correspond to different reference signal time domain density levels. For example, as shown in Table 1:

[0112] Speed ​​matching conditions Time Domain Density Level In <V10 First level V10≤V≤V20 Second level V>V20 Third Level

[0113] Table 1

[0114] The vehicle-mounted device may compare the currently determined relative speed with the various speed thresholds shown in Table 1 to determine which speed matching condition the current relative speed falls into, thereby determining the required reference signal time domain density level.

[0115] In step 123, transmission information of the VSSB to be sent is determined according to the target reference signal time domain density, the transmission information including: a target subcarrier spacing for sending the VSSB and a structure of the VSSB to be sent, wherein the structure of the VSSB to be sent includes: the number of symbols occupied by each signal and the occupied symbol position;

[0116] In the present disclosure, the time domain density level of a reference signal of a VSSB is related to the subcarrier spacing for transmitting the VSSB and the total number of time domain units, such as symbols, occupied by the reference signal in the signal structure of the VSSB.

[0117] In the NR V2X system, there may be multiple available subcarrier spacings corresponding to one carrier frequency. For example, in frequency bands below 6 GHz, the subcarrier spacings that the system can use to send VSSB include: 15 KHz, 30 KHz, and 60 KHz. In frequency bands above 6 GHz, the subcarrier spacings that the system can use to send VSSB include: 120 KHz, 240 KHz, and 480 KHz. The higher the frequency band to which the target carrier frequency of the on-board equipment belongs, the larger the subcarrier spacing used to send VSSB can be. For example, when the target carrier frequency is 6 GHz, the available subcarrier spacing must be greater than or equal to the available subcarrier spacing when the target carrier frequency is 3 GHz, such as 15 KHz or 30 KHz can be used at 3 GHz, and 30 KHz or 60 KHz can be used at 6 GHz.

[0118] Still taking the target carrier frequency determined in the above step 121 as the 3GHz Hz frequency band as an example, it is assumed that the system stipulates that the available subcarrier spacings in the 3GHz Hz frequency band include: 15KHz, 30KHz; at the same time, the system stipulates that two VSSB structures can be used in this frequency band, expressed as: a first VSSB structure, a second VSSB structure, wherein the symbol ratio of the reference signal in the second VSSB structure is greater than the symbol ratio of the reference signal in the first VSSB structure.

[0119]

[0120] Table 2

[0121] Exemplarily, it is assumed that the vehicle-mounted device determines, based on the current relative speed, that the time domain density level of the reference signal of the to-be-sent VSSB needs to be increased from the first level to the second level.

[0122] In the present disclosure, the VSSB structure used by the vehicle-mounted device before adjusting the reference signal time domain density may be referred to as the original VSSB structure. When the vehicle-mounted device uses the first level reference signal time domain density to send VSSB, the subcarrier spacing used is 15KHz. If the system is agreed to be in the 3GHz frequency band, at 15KHz, one VSSB is set in one time slot. It is assumed that the original VSSB structure used by the vehicle-mounted device is the first VSSB structure.

[0123] Exemplarily, the first VSSB structure used by the vehicle-mounted device may be as follows: Figure 6-1 As shown, the number of symbols occupied by PSSS is equal to 2, the number of symbols occupied by SSSS is equal to 2, the number of symbols occupied by PSBCH is equal to 5, and the number of symbols occupied by DMRS is equal to 3.

[0124] The vehicle-mounted device may increase the time domain density of the reference signal corresponding to the VSSB to be sent to the second level in at least one manner:

[0125] Method 1: without changing the subcarrier spacing used, use the second VSSB structure in which the reference signal accounts for a larger proportion.

[0126] For example, relative to Figure 6-1 The first VSSB structure shown, the second VSSB structure in the present disclosure can have the following two design modes:

[0127] The first design, relative to the first VSSB structure, increases the number of symbols occupied by at least one reference signal and reduces the number of symbols occupied by the PSBCH while keeping the VSSB duration unchanged, such as Figure 6-2 As shown in the structural diagram of the second VSSB, the number of symbols occupied by PSSS is equal to 3, the number of symbols occupied by SSSS is equal to 3, the number of symbols occupied by PSBCH is equal to 2, and the number of symbols occupied by DMRS is equal to 4.

[0128] The second design, relative to the first VSSB structure, increases the number of DMRS symbols by FDM while keeping the duration of VSSB unchanged. For example, when designing the second VSSB structure in the embodiment of the present disclosure, some REs can be allocated in the RB (resource block) corresponding to each or part of the PSBCH symbols such as #3, #5, #7, #8, and #10 to carry DMRS signals, such as Figure 6-3 As shown, the number of symbols occupied by DMRS is increased, and the proportion of reference signals is increased relative to the first VSSB structure, that is, the ratio of the number of symbols occupied by reference signals to the duration occupied by VSSB is increased, thereby achieving the purpose of increasing the time domain density of reference signals.

[0129] Method 2: without changing the VSSB structure, increase the subcarrier spacing used to send VSSB at the target carrier frequency

[0130] In the present disclosure, when the protocol stipulates that the above-mentioned target carrier frequency corresponds to multiple subcarrier spacings, the structure of VSSB may not be changed, and the time domain density of the reference signal corresponding to VSSB may be increased by increasing the subcarrier spacing.

[0131] As shown in the above example, 15KHz is used, 1ms corresponds to one time slot, and a VSSB transmission time window with a duration of 5ms includes 5 time slots. Assuming that the vehicle-mounted equipment sends four VSSBs, if the system agrees to set one VSSB in one time slot at 3GHz frequency band and 15KHz, the distribution of the above VSSBs to be sent is as follows: Figure 6-1 As shown, VSSB0, VSSB1, VSSB2, and VSSB3 respectively represent the index information of each VSSB to be sent.

[0132] If the target subcarrier spacing is increased to 30KHz, 1ms corresponds to 2 time slots, that is, the duration of one time slot is shortened to 0.5ms. Since the position and number of symbols of VSSB in a time slot remain unchanged, the duration of a single VSSB is shortened to Figure 6-1 Half the duration shown, e.g. Figure 6-4 As shown, V0, V1, V2, and V3 represent the index information of each VSSB. Figure 6-1 VSSB0, VSSB1, VSSB2, and VSSB3 are the same.

[0133] Since the number of symbols occupied by the reference signal in the VSSB remains unchanged, while the duration of a VSSB is reduced, the ratio of the number of symbols occupied by the reference signal in the VSSB to the duration of the VSSB becomes larger, thereby increasing the time domain density of the reference signal by increasing the target subcarrier spacing, thereby counteracting a higher Doppler frequency shift.

[0134] At this point, the target subcarrier spacing and target VSSB structure required for the target reference signal time domain density are determined, that is, the transmission information of a single VSSB to be sent is determined.

[0135] The above embodiments are described by taking the case where the time domain density of the reference signal needs to be increased as an example. Conversely, if the time domain density of the reference signal needs to be reduced, the opposite operation can be performed, which will not be described in detail here.

[0136] In the present disclosure, when the vehicle speed changes significantly, the vehicle-mounted device can use at least one of the above methods to timely adjust the time domain density of the reference signal corresponding to the VSSB to be sent, thereby effectively combating Doppler frequency shift and ensuring instant communication between the vehicle-mounted device and the receiving terminal.

[0137] In step 124, the VSSB is sent according to the transmission information of the VSSB to be sent within the VSSB sending time window.

[0138] In the present disclosure, when the vehicle-mounted device sends a VSSB to the receiving terminal within the VSSB sending time window, it also needs to carry the index information of the occupied valid unit time domain resources, so that the receiving terminal can perform time domain synchronization with the vehicle-mounted device based on the index information.

[0139] See also Figure 7 According to a flowchart of another method for sending a reference signal shown in an exemplary embodiment, the above step 12 may include:

[0140] In step 1200, when N is an integer greater than 1, VSSB index information corresponding to each of the VSSBs is determined;

[0141] When the target carrier frequency and subcarrier spacing of the vehicle-mounted device for sending VSSB are determined, the position and index information of each unit time domain resource in a VSSB sending time window are agreed upon by the system, such as Figure 6-1 As shown, VSSB0, VSSB1, VSSB2, and VSSB3 in the figure are determined in accordance with the system protocol regulations.

[0142] In step 1201, the VSSB index information is loaded into a setting signal of a VSSB to be sent, and a target VSSB carrying the index information is generated;

[0143] exist Figure 6-1 In the illustrated embodiment, for a VSSB to be sent at the VSSB3 position, the vehicle-mounted device may carry the index information VSSB3 in a setting signal of the VSSB, such as a DMRS signal and / or a PSBCH signal, and send it to the receiving terminal.

[0144] In the present disclosure, any of the following methods may be used to load the index information of the VSSB to be sent into the setting signal of the VSSB to be sent:

[0145] Method 1: indicating the index information of the VSSB to be sent through the corresponding DMRS target sequence;

[0146] by Figure 6-1 Taking the example of a VSSB transmission time window including 4 index information, in the present disclosure, the system may stipulate the corresponding relationship between the above index information and the DMRS sequence, as shown in Table 3:

[0147] Index information DMRS sequence VSSB 0 * VSSB 1 ** VSSB 2 *** VSSB 3 ****

[0148] Table 3

[0149] Referring to Table 3, the vehicle-mounted device may load the sequence "****" corresponding to VSSB3 into the DMRS signal of the VSSB. The DMRS sequence "****" indicates the above index information: VSSB 3.

[0150] Method 2: Load the index information of the VSSB to be sent into the first bit of the preset PSBCH signal;

[0151] In another disclosed embodiment, the above-mentioned index information can be loaded into the reserved information bit of the preset PSBCH signal or into a new information bit, which is referred to as the first bit in the present disclosure. For example, the bit value 11 corresponding to VSSB 3 is placed in the 2 reserved bits or new bits of the above-mentioned preset PSBCH signal to indicate the index information.

[0152] Method three: indicate part of the bit values ​​of the index information of the VSSB to be sent through the corresponding DMRS target sequence, and load the remaining bit values ​​into the second bit of the preset PSBCH signal.

[0153] In another disclosed embodiment, the above index information may also be represented by combining a DMRS target sequence with bit information set in a preset PSBCH signal.

[0154] Still taking the above example, for the index information VSSB 3, its corresponding bit value is 11. In the embodiment of the present disclosure, the low-order bit value "1" can be indicated by a preset DMRS target sequence such as "*", and the high-order bit value "1" can be placed in a reserved bit or a new bit in a preset PSBCH signal. The present disclosure refers to the reserved bit or new bit in the PSBCH signal used to carry part of the index information as the second bit. In another embodiment of the present disclosure, the system may also agree to indicate the high-order bit value corresponding to the index information through a DMRS target sequence, and correspondingly, indicate the remaining bit values ​​in the second bit in the preset PSBCH signal. The present disclosure does not impose any restrictions on this.

[0155] In the present disclosure, the VSSB to be sent carrying the VSSB index information is referred to as a target VSSB.

[0156] In step 1202, the target VSSB is transmitted via multiple beams within the periodically occurring VSSB transmission time window.

[0157] In the present disclosure, a beam is used at different times to send the target VSSB in different directions, for example, Figure 6-1In the example shown, at the time domain position corresponding to the first time slot VSSB0 of 5ms, a beam is used to send a target VSSB carrying index information VSSB 0 in one direction; at the time domain position corresponding to the third time slot VSSB2, a beam is used to send a target VSSB carrying index information VSSB 2 in another direction; and so on.

[0158] In addition, in the present disclosure, regarding how to send a PSBCH signal and a DMRS signal of a VSSB within the VSSB sending time window of the vehicle-mounted device, the present disclosure may adopt the following three sending modes:

[0159] In the first transmission mode, the PSBCH signal and DMRS signal in a VSSB are sent in TDM (Time Division Multiplexing) mode, that is, the PSBCH signal and DMRS signal are sent in time-frequency resources corresponding to different symbols respectively. In this mode, the frequency domains of the two can be the same, but the time domains are different.

[0160] In the second transmission mode, the PSBCH signal and DMRS signal in a VSSB are sent using the FDM (Frequency Division Multiplexing) mode, that is, the PSBCH signal and the DMRS signal can be sent in different frequency domain resources corresponding to the same symbol. In this mode, the time domains of the two can be the same, but the frequency domains are different.

[0161] The third transmission mode uses a combination of TDM and FDM to transmit the PSBCH signal and DMRS signal. Figure 6-3 As shown, in the time-frequency resources corresponding to the symbol #5 occupied by the PSBCH signal, such as the 12 REs (Resource Element) contained in any RB, some resources such as RE#3, RE#7, and RE#11 are used to send DMRS signals, and the remaining REs are used to send PSBCH signals. In addition, the DMRS signal is also sent in the time-frequency resources corresponding to the symbol #6. In symbols with both PSBCH and DMRS, the proportion of REs occupied by DMRS can be 1 / 3 or 1 / 4, etc.

[0162] In the present disclosure, the base station may send the resource configuration information to the vehicle-mounted device and the receiving terminal through broadcast signaling, high-layer signaling, and physical layer signaling. The high-layer signaling may be RRC (Radio Resource Control) signaling, MAC (Medium Access Control) CE (Control Element) signaling, etc.

[0163] In summary, the present disclosure designs a reference signal transmission method for the 5G NR V2X system. The vehicle-mounted device can send a reference signal to the receiving terminals in different directions through a beam in a synchronization signal block VSSB structure within a periodic VSSB sending time window, so that after receiving the VSSB sent by the vehicle-mounted device, the receiving terminal can use the reference signal in the VSSB and the index information carried in the VSSB to quickly synchronize with the vehicle-mounted device in the time domain, thereby improving the time domain synchronization efficiency between the receiving terminal and the vehicle-mounted device, reducing the time spent on signal synchronization, and ensuring the immediacy of communication between the vehicle-mounted device and the receiving terminal.

[0164] Correspondingly, the present disclosure also provides a method for receiving a reference signal, which is applied to a receiving terminal of an NR V2X system.

[0165] See also Figure 8 According to a flow chart of a method for receiving a reference signal according to an exemplary embodiment, the method may include:

[0166] In step 21, a synchronization signal block VSSB in a new radio interface vehicle network NR V2X system sent by the vehicle-mounted equipment is detected;

[0167] In one embodiment of the present disclosure, the receiving terminal can also determine the target carrier frequency information through the system agreed carrier frequency information built into the chip, or receive the resource configuration information sent by the base station. The target carrier frequency refers to the carrier frequency used by the receiving terminal to receive VSSB from the vehicle-mounted equipment.

[0168] In one embodiment, see Fig. 9 According to a flowchart of another method for receiving a reference signal shown in an exemplary embodiment, step 21 may include:

[0169] In step 211, resource configuration information sent by a base station is received, where the resource configuration information is used to inform the receiving terminal to use the configured resources to receive the VSSB;

[0170] In step 212, target carrier frequency information for receiving the VSSB is determined according to the resource configuration information;

[0171] In the disclosed embodiment, the base station may also send resource configuration information to the receiving terminal to inform the receiving terminal of the carrier frequency at which to receive the VSSB sent by the vehicle-mounted device.

[0172] In step 213, a detection subcarrier spacing is determined according to the target carrier frequency information;

[0173] Assume that the receiving terminal, such as vehicle B, determines that the carrier frequency used for receiving VSSB is a carrier frequency of the 3 GHz frequency band. The system protocol stipulates that the subcarrier spacing that can be used for the carrier frequency of a frequency band can be one or more, and the receiving terminal can determine the above-mentioned available subcarrier spacing as the detection subcarrier spacing. For example, the detection subcarrier spacing corresponding to the 3 GHz frequency band may include: 15 KHz, 30 KHz.

[0174] In step 214, the VSSB is detected on the target resource using each of the detection subcarrier spacings.

[0175] As in the above example, the receiving terminal may use 15 KHz and 30 KHz to monitor VSSB, and determine the detection subcarrier spacing used when VSSB is detected as the target subcarrier spacing, such as 15 KHz.

[0176] In step 22, VSSB index information is obtained from the detected target VSSB;

[0177] See also Fig.10 According to a flowchart of another method for receiving a reference signal shown in an exemplary embodiment, step 22 may include:

[0178] In step 221, the target VSSB is parsed to obtain various signals, including: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS;

[0179] In step 222, the VSSB index information is obtained from the setting signal.

[0180] The above-mentioned setting signal may be a preset PSBCH signal, a preset DMRS signal included in the target VSSB, or a combination of the two.

[0181] Corresponding to the above step 1201, in the present disclosure, the receiving terminal may obtain the VSSB index information from the setting signal in the target VSSB in any of the following ways:

[0182] Method 1: obtaining the VSSB index information according to the information carried by the set DMRS sequence;

[0183] For example, assuming that the DMRS sequence carried in the preset DMRS signal is ****, the correspondence between the index information and the DMRS sequence under the conditions of 3GHz frequency band and 15KHz subcarrier spacing agreed by the query system is as shown in Table 3 above, and the index information of the target VSSB can be determined to be VSSB 3.

[0184] Method 2: parse the VSSB index information from the first bit of the PSBCH signal.

[0185] Corresponding to the second implementation mode of the above step 1201, illustratively, if the information bit value is detected to be 11 in the preset bit, ie, the first bit, of the preset PSBCH signal of the target VSSB, it can be determined that the VSSB index information carried by the target VSSB is VSSB 3.

[0186] Method 3: Obtain VSSB index information from preset PSBCH signal and preset DMRS signal

[0187] See also Fig.11 According to a flowchart of another method for receiving a reference signal shown in an exemplary embodiment, step 222 may include:

[0188] In step 2221, according to the information carried by the set DMRS sequence, a partial bit value corresponding to the VSSB index information is obtained;

[0189] In step 2222, the remaining bit value corresponding to the VSSB index information is obtained from the second bit of the set PSBCH signal;

[0190] In step 2223, the VSSB index information is determined according to the complete bit value consisting of the partial bit value and the remaining bit value.

[0191] Corresponding to the third implementation mode of the above step 1201, if the bit value corresponding to the DMRS sequence carried by the preset DMRS signal of the target VSSB is 1; the bit value obtained from the second bit of the set PSBCH signal of the target VSSB is 1. If the system stipulates that the DMRS sequence carried by the preset DMRS signal indicates the high-order bit value in the bit value corresponding to the VSSB index information; the value of the second bit of the PSBCH signal is set to the lower bit value in the bit value corresponding to the VSSB index information. Then, according to the information carried by the set DMRS sequence and the second bit value of the set PSBCH signal, the complete bit value corresponding to the VSSB index information corresponding to the target VSSB is determined to be 11, thereby determining that the VSSB index information of the target VSSB is: VSSB 3.

[0192] In step 23, the time domain position corresponding to the target VSSB is determined according to the VSSB index information;

[0193] Specifically, the receiving terminal determines the time domain position corresponding to the target VSSB according to the VSSB index information, the target carrier frequency information, and the target subcarrier spacing. Still taking the target carrier frequency as 3 GHz, the target subcarrier spacing as 15 kHz, and the VSSB index information as VSSB 3 as an example, according to Figure 6-1 , the precise time domain position of the target VSSB within the transmission time window can be determined, that is, the #1 to #12 symbols in the fourth time slot in the VSSB transmission time window, that is, the slot with sequence number 3.

[0194] In step 24, time domain synchronization is performed with the vehicle-mounted device according to the time domain position.

[0195] For the aforementioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present disclosure is not limited by the described order of actions, because according to the present disclosure, certain steps can be performed in other orders or simultaneously.

[0196] Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0197] Corresponding to the aforementioned application function implementation method embodiment, the present disclosure also provides an application function implementation device and a corresponding terminal embodiment.

[0198] Accordingly, the present disclosure provides a device for sending a reference signal, which can be arranged in a vehicle-mounted device. Fig.12 According to a block diagram of a device for sending a reference signal according to an exemplary embodiment, the device may include:

[0199] The configuration information determination module 31 is configured to determine the transmission configuration information of the synchronization signal block VSSB in the new air interface vehicle network NR V2X system, and the transmission configuration information includes: the transmission period of the VSSB and the time domain position of the VSSB transmission time window within the transmission period;

[0200] The sending module 32 is configured to send N of the VSSBs in the periodically occurring VSSB sending time window according to the transmission configuration information, where N is an integer greater than or equal to 1;

[0201] Each of the VSSBs includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS.

[0202] See also Fig.13 According to a block diagram of another device for sending a reference signal according to an exemplary embodiment, Fig.12 Based on the device embodiment shown, the sending module 32 may include:

[0203] The carrier frequency determination submodule 321 is configured to determine the target carrier frequency information for sending the VSSB;

[0204] The time domain density determination submodule 322 is configured to determine the target reference signal time domain density corresponding to each VSSB to be sent according to the target carrier frequency information and the current speed information of the vehicle-mounted device;

[0205] The transmission information determination submodule 323 is configured to determine the transmission information of the VSSB to be sent according to the target reference signal time domain density, wherein the transmission information includes: the target subcarrier spacing for sending the VSSB and the structure of the VSSB to be sent, wherein the structure of the VSSB to be sent includes: the number of symbols occupied by each signal and the occupied symbol position;

[0206] The sending submodule 324 is configured to send the VSSB according to the transmission information of the VSSB to be sent within the VSSB sending time window.

[0207] See also Fig.14 According to a block diagram of another device for sending a reference signal according to an exemplary embodiment, Fig.13 Based on the device embodiment shown, the carrier frequency determination submodule 321 may include:

[0208] A configuration information receiving unit 3211 is configured to receive resource configuration information sent by the base station, wherein the resource configuration information is used to inform the vehicle-mounted device to use the configured resources to send the VSSB;

[0209] The first carrier frequency determination unit 3212 is configured to determine the target carrier frequency information according to the resource configuration information; or,

[0210] The second carrier frequency determination unit 3212 is configured to determine the target carrier frequency information according to the preset resource configuration information.

[0211] In an apparatus embodiment of the present disclosure, if the current speed information includes: a relative speed between the vehicle-mounted device and a preset receiving terminal;

[0212] See also Fig.15 According to a block diagram of another device for sending a reference signal according to an exemplary embodiment, Fig.13 Based on the device embodiment shown, the time domain density determination submodule 322 may include:

[0213] The comparison unit 3221 is configured to compare the relative speed with a preset speed threshold to obtain a comparison result;

[0214] The time domain density determining unit 3222 is configured to determine the target reference signal time domain density according to the target carrier frequency information and the comparison result.

[0215] In an apparatus embodiment of the present disclosure, the time domain density determination unit 3222 may be configured to increase the reference signal time domain density at the target carrier frequency to the target reference signal time domain density corresponding to the comparison result when the comparison result indicates that the relative speed is greater than or equal to the preset speed threshold.

[0216] Accordingly, the time domain density determining unit 3222 may be configured to increase the reference signal time domain density at the target carrier frequency to the target reference signal time domain density corresponding to the comparison result in at least one of the following ways:

[0217] Use a target VSSB structure, wherein the reference signal ratio of the target VSSB structure is greater than the reference signal ratio of the original VSSB structure, and the reference signal ratio is the ratio between the number of symbols occupied by the reference signal and the duration occupied by the VSSB; and / or

[0218] Increase the subcarrier spacing for sending VSSB at the target carrier frequency.

[0219] See also Fig.16 According to a block diagram of another device for sending a reference signal according to an exemplary embodiment, Fig.13 Based on the device embodiment shown, the sending module 32 may include:

[0220] The index information determination submodule 3201 is configured to determine the VSSB index information corresponding to each of the VSSBs when N is an integer greater than 1;

[0221] The target VSSB generating submodule 3202 is configured to load the VSSB index information into the setting signal of the VSSB to be sent, and generate a target VSSB carrying the index information;

[0222] In an apparatus embodiment of the present disclosure, the target VSSB generation submodule 3202 may be configured to load the VSSB index information into a setting signal of the VSSB to be sent in any of the following ways:

[0223] Indicating the VSSB index information through the corresponding DMRS target sequence;

[0224] Loading the VSSB index information into the first bit of a preset PSBCH signal;

[0225] Part of the bit values ​​of the VSSB index information are indicated by the corresponding DMRS target sequence, and the remaining bit values ​​are loaded into the second bit of the preset PSBCH signal.

[0226] The target VSSB sending submodule 3203 is configured to send the target VSSB through multiple beams within the periodically occurring VSSB sending time window.

[0227] In an apparatus embodiment of the present disclosure, the sending module 32 may be configured to send the PSBCH signal and the DMRS signal in each of the VSSBs by using frequency division multiplexing FDM and / or time division multiplexing TDM.

[0228] Accordingly, the present disclosure also provides a device for receiving a reference signal, which is arranged in a receiving terminal. Fig.17 According to a block diagram of a device for receiving a reference signal according to an exemplary embodiment, the device may include:

[0229] The detection module 41 is configured to detect the synchronization signal block VSSB in the new radio vehicle network NRV2X system sent by the vehicle-mounted device;

[0230] An index information acquisition module 42, configured to acquire VSSB index information from the detected target VSSB;

[0231] A position determination module, configured to determine a time domain position corresponding to the target VSSB according to the VSSB index information;

[0232] The synchronization module 43 is configured to perform time domain synchronization with the vehicle-mounted device according to the time domain position.

[0233] See also Fig.18 According to a block diagram of another device for receiving a reference signal according to an exemplary embodiment, Fig.17 Based on the device embodiment shown, the detection module 41 may include:

[0234] The configuration information receiving submodule 411 is configured to receive resource configuration information sent by the base station, wherein the resource configuration information is used to inform the receiving terminal to use the configured resources to receive the VSSB;

[0235] The carrier frequency determination submodule 412 is configured to determine the target carrier frequency information for receiving the VSSB according to the resource configuration information;

[0236] The subcarrier spacing determination submodule 413 is configured to determine the detection subcarrier spacing according to the target carrier frequency information;

[0237] The detection submodule 414 is configured to detect the VSSB on the target resource using each of the detection subcarrier intervals.

[0238] See also Fig.19According to a block diagram of another device for receiving a reference signal according to an exemplary embodiment, Fig.17 Based on the device embodiment shown, the index information acquisition module 42 may include:

[0239] The parsing submodule 421 is configured to parse the target VSSB to obtain various signals, wherein the various signals include: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS;

[0240] The index information acquisition submodule 422 is configured to acquire the VSSB index information from a setting signal, where the setting signal includes: the PSBCH signal and / or the DMRS signal.

[0241] See also Fig. 20 According to a block diagram of another device for receiving a reference signal according to an exemplary embodiment, Fig.19 Based on the device embodiment shown, the index information acquisition submodule 422 may include:

[0242] The first index obtaining unit 4221 is configured to obtain the VSSB index information according to the information carried by the set DMRS sequence;

[0243] The second index obtaining unit 4222 is configured to parse the VSSB index information from the first bit of the set PSBCH signal.

[0244] See also Fig.21 According to a block diagram of another device for receiving a reference signal according to an exemplary embodiment, Fig.19 Based on the device embodiment shown, the index information acquisition submodule includes:

[0245] The first bit value determining unit 4223 is configured to obtain a partial bit value corresponding to the VSSB index information according to the information carried by the set DMRS sequence;

[0246] The second bit value determining unit 4224 is configured to obtain the remaining bit value corresponding to the VSSB index information from the second bit of the set PSBCH signal;

[0247] The third index obtaining unit 4225 is configured to determine the VSSB index information according to the complete bit value composed of the partial bit value and the remaining bit value.

[0248] In another device embodiment of the present disclosure, the position determination module can be configured to determine the time domain position corresponding to the target VSSB based on the VSSB index information, the target carrier frequency information, and the target subcarrier spacing; wherein the target subcarrier spacing is the detection subcarrier spacing used when the target VSSB is detected.

[0249] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can refer to the partial description of the method embodiments. The device embodiments described above are only schematic, wherein the units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the disclosed solution. A person of ordinary skill in the art may understand and implement it without creative work.

[0250] Accordingly, on one hand, a vehicle-mounted device is provided, including:

[0251] processor;

[0252] a memory for storing processor-executable instructions;

[0253] Wherein, the processor is configured to:

[0254] Determine transmission configuration information of a synchronization signal block VSSB in a new air interface vehicle-to-everything (NR) V2X system, wherein the transmission configuration information includes: a transmission period of the VSSB and a time domain position of a VSSB transmission time window within the transmission period;

[0255] According to the transmission configuration information, N of the VSSBs are sent within the periodically occurring VSSB sending time window, where N is an integer greater than or equal to 1;

[0256] Each of the VSSBs includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS.

[0257] In another aspect, a terminal is provided, comprising:

[0258] processor;

[0259] a memory for storing processor-executable instructions;

[0260] Wherein, the processor is configured to:

[0261] Detect the synchronization signal block VSSB in the new radio interface vehicle network NR V2X system sent by the vehicle equipment;

[0262] Obtain VSSB index information from the detected target VSSB;

[0263] Determine the time domain position corresponding to the target VSSB according to the VSSB index information;

[0264] Time domain synchronization is performed with the vehicle-mounted device according to the time domain position.

[0265] like Fig. 22 As shown, Fig. 22 FIG. 2 is a schematic diagram showing a structure of a vehicle-mounted device 2200 according to an exemplary embodiment. Fig. 22 The base station 2200 includes a processing component 2222, a wireless transmission / reception component 2224, an antenna component 2226, and a signal processing part specific to the wireless interface. The processing component 2222 may further include one or more processors.

[0266] One of the processors in the processing component 2222 may be configured to:

[0267] Determine transmission configuration information of a synchronization signal block VSSB in a new air interface vehicle-to-everything (NR) V2X system, wherein the transmission configuration information includes: a transmission period of the VSSB and a time domain position of a VSSB transmission time window within the transmission period;

[0268] According to the transmission configuration information, N of the VSSBs are sent within the periodically occurring VSSB sending time window, where N is an integer greater than or equal to 1;

[0269] Each of the VSSBs includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS.

[0270] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, on which computer instructions are stored, and the above-mentioned computer instructions can be executed by the processing component 2222 of the vehicle-mounted device 2200 to complete Figure 2 to Figure 7 For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0271] Fig.232 is a schematic diagram of a terminal 2300 according to an exemplary embodiment. For example, the terminal 2300 may be a user device, and may specifically be a mobile phone, a computer, a digital broadcast terminal, a message transceiver device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, a wearable device such as a smart watch, a smart glasses, a smart bracelet, a smart running shoe, etc.

[0272] Reference Fig.23 The terminal 2300 may include one or more of the following components: a processing component 2302, a memory 2304, a power component 2306, a multimedia component 2308, an audio component 2310, an input / output (I / O) interface 2312, a sensor component 2314, and a communication component 2316.

[0273] The processing component 2302 generally controls the overall operation of the terminal 2300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 2302 may include one or more processors 2320 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 2302 may include one or more modules to facilitate the interaction between the processing component 2302 and other components. For example, the processing component 2302 may include a multimedia module to facilitate the interaction between the multimedia component 2308 and the processing component 2302.

[0274] The memory 2304 is configured to store various types of data to support operations on the terminal 2300. Examples of such data include instructions for any application or method operating on the terminal 2300, contact data, phone book data, messages, pictures, videos, etc. The memory 2304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0275] Power component 2306 provides power to various components of terminal 2300. Power component 2306 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 2300.

[0276] The multimedia component 2308 includes a screen that provides an output interface between the terminal 2300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 2308 includes a front camera and / or a rear camera. When the device 2300 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0277] The audio component 2310 is configured to output and / or input audio signals. For example, the audio component 2310 includes a microphone (MIC), and when the terminal 2300 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 2304 or sent via the communication component 2316. In some embodiments, the audio component 2310 also includes a speaker for outputting audio signals.

[0278] I / O interface 2312 provides an interface between processing component 2302 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0279] The sensor assembly 2314 includes one or more sensors for providing various aspects of status assessment for the terminal 2300. For example, the sensor assembly 2314 can detect the open / closed state of the device 2300, the relative positioning of the components, such as the display and keypad of the terminal 2300, and the sensor assembly 2314 can also detect the position change of the terminal 2300 or a component of the terminal 2300, the presence or absence of contact between the user and the terminal 2300, the orientation or acceleration / deceleration of the terminal 2300, and the temperature change of the terminal 2300. The sensor assembly 2314 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 2314 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 2314 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0280] The communication component 2316 is configured to facilitate wired or wireless communication between the terminal 2300 and other devices. The terminal 2300 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G LTE, 5G NR or a combination thereof. In an exemplary embodiment, the communication component 2316 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the above-mentioned communication component 2316 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0281] In an exemplary embodiment, terminal 2300 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above methods.

[0282] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 2304 including instructions, which can be executed by the processor 2320 of the terminal 2300 to perform the above Figure 8 to Figure 11 Any of the methods for receiving a reference signal. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0283] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0284] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for sending a reference signal, characterized in that: The method comprises: Determine transmission configuration information of a synchronization signal block VSSB, the transmission configuration information including: a transmission period of the VSSB, and a time domain position of a VSSB transmission time window within the transmission period; According to the transmission configuration information, N of the VSSBs are sent within the periodically occurring VSSB sending time window, where N is an integer greater than or equal to 1; Wherein, the VSSB includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS; Wherein, the structure of the VSSB includes any of the following: a first VSSB structure, wherein the number of symbols occupied by the PSSS in the first VSSB structure is 2, the number of symbols occupied by the SSSS is 2, the number of symbols occupied by the PSBCH is 5, and the number of symbols occupied by the DMRS is 3; A second VSSB structure, wherein the VSSB duration of the second VSSB structure is unchanged relative to that of the first VSSB structure; wherein the number of symbols occupied by at least one reference signal is increased in the second VSSB structure, and the number of symbols occupied by the PSBCH is reduced; or, in the resource blocks corresponding to each or part of the symbols occupied by the PSBCH in the second VSSB structure, part of the RE is separated for carrying the DMRS signal; wherein the sending of N VSSBs within the periodically occurring VSSB sending time window comprises: Determining target carrier frequency information for sending the VSSB; Determine the target reference signal time domain density corresponding to each VSSB to be sent according to the target carrier frequency information and the current speed information of the vehicle-mounted device; The transmission information of the VSSB to be sent is determined according to the target reference signal time domain density, and the transmission information includes: the target subcarrier spacing for sending the VSSB and the structure of the VSSB to be sent, wherein the structure of the VSSB to be sent includes: the number of symbols occupied by each signal and the occupied symbol positions; wherein, before adjusting the reference signal time domain density under the target carrier frequency, the structure of the VSSB to be sent is the first VSSB structure; when the reference signal time domain density under the target carrier frequency needs to be increased to the target reference signal time domain density corresponding to the comparison result, the structure of the VSSB to be sent is the second VSSB structure and / or the subcarrier spacing for sending the VSSB under the target carrier frequency is increased, wherein the comparison result indicates that the relative speed between the vehicle-mounted device and the preset receiving terminal is greater than or equal to the preset speed threshold; The VSSB is sent in the VSSB sending time window according to the transmission information of the VSSB to be sent.

2. The method according to claim 1, characterized in that The determining of target carrier frequency information for sending the VSSB includes: receiving resource configuration information sent by a base station, wherein the resource configuration information is used to inform the vehicle-mounted device to use the configured resources to send the VSSB; Determine the target carrier frequency information according to the resource configuration information; or, The target carrier frequency information is determined according to the preset resource configuration information.

3. The method according to claim 1, characterized in that The current speed information includes: the relative speed; The step of determining the target reference signal time domain density corresponding to each VSSB to be sent according to the target carrier frequency information and the current speed information of the vehicle-mounted device includes: Comparing the relative speed with the preset speed threshold to obtain the comparison result; The target reference signal time domain density is determined according to the target carrier frequency information and the comparison result.

4. The method according to claim 3, characterized in that: The determining the target reference signal time domain density according to the target carrier frequency information and the comparison result includes: If the comparison result indicates that the relative speed is greater than or equal to the preset speed threshold, the time domain density of the reference signal at the target carrier frequency is increased to the target reference signal time domain density corresponding to the comparison result.

5. The method according to claim 1, characterized in that The sending of N VSSBs within the periodically occurring VSSB sending time window comprises: When N is an integer greater than 1, determining VSSB index information corresponding to each of the VSSBs; Loading the VSSB index information into a setting signal of the VSSB to be sent, generating a target VSSB carrying the index information; The target VSSB is transmitted through a plurality of beams within the VSSB transmission time window that occurs periodically.

6. The method according to claim 5, characterized in that The VSSB index information is loaded into the setting signal of the VSSB to be sent by using any of the following methods: Indicating the VSSB index information through the corresponding DMRS target sequence; Loading the VSSB index information into the first bit of a preset PSBCH signal; Part of the bit values ​​of the VSSB index information are indicated by the corresponding DMRS target sequence, and the remaining bit values ​​are loaded into the second bit of the preset PSBCH signal.

7. A method for receiving a reference signal, characterized in that: The method comprises: In the periodic synchronization signal block VSSB transmission time window, detect N VSSBs transmitted by the vehicle-mounted equipment, where N is an integer greater than or equal to 1; wherein the VSSB includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS; Obtain VSSB index information from the detected target VSSB; Determine the time domain position corresponding to the target VSSB according to the VSSB index information; Performing time domain synchronization with the vehicle-mounted device according to the time domain position; Wherein, the structure of the VSSB includes any of the following: a first VSSB structure, wherein the number of symbols occupied by the PSSS in the first VSSB structure is 2, the number of symbols occupied by the SSSS is 2, the number of symbols occupied by the PSBCH is 5, and the number of symbols occupied by the DMRS is 3; A second VSSB structure, wherein the VSSB duration of the second VSSB structure is unchanged relative to that of the first VSSB structure; wherein the number of symbols occupied by at least one reference signal is increased in the second VSSB structure, and the number of symbols occupied by the PSBCH is reduced; or, in the second VSSB structure, in the resource blocks corresponding to each or part of the symbols occupied by the PSBCH, part of the REs are separated for carrying the DMRS signal; Before the vehicle-mounted device adjusts the time domain density of the reference signal under the target carrier frequency, the structure of the target VSSB is the first VSSB structure; when the time domain density of the reference signal under the target carrier frequency needs to be increased to the target reference signal time domain density corresponding to the comparison result, the structure of the target VSSB is the second VSSB structure and / or the subcarrier spacing for sending VSSB under the target carrier frequency is increased, wherein the comparison result indicates that the relative speed between the vehicle-mounted device and the preset receiving terminal is greater than or equal to a preset speed threshold.

8. The method according to claim 7, characterized in that The detecting of the VSSB sent by the vehicle-mounted device comprises: receiving resource configuration information sent by a base station, wherein the resource configuration information is used to inform a receiving terminal to use the configured resources to receive the VSSB; Determine target carrier frequency information for receiving the VSSB according to the resource configuration information; Determine the detection subcarrier spacing according to the target carrier frequency information; The VSSB is detected in a target frequency band using each of the detection subcarrier intervals.

9. The method according to claim 7, characterized in that: The acquiring VSSB index information from the detected target VSSB includes: Parsing the target VSSB to obtain various signals, wherein the various signals include: the PSSS, the SSSS, the PSBCH signal and the DMRS; The VSSB index information is obtained from a setting signal, where the setting signal includes: the PSBCH signal and / or the DMRS signal.

10. The method according to claim 9, characterized in that The acquiring the VSSB index information from the setting signal includes any one of the following: Obtaining the VSSB index information according to the information carried by the set DMRS sequence; The VSSB index information is parsed from the bits that set the PSBCH signal.

11. The method according to claim 9, characterized in that The obtaining the VSSB index information from the setting signal includes: According to the information carried by the set DMRS sequence, obtain a partial bit value corresponding to the VSSB index information; Obtaining the remaining bit values ​​corresponding to the VSSB index information from the bits of the set PSBCH signal; The VSSB index information is determined according to a complete bit value consisting of the partial bit value and the remaining bit value.

12. The method according to claim 7, characterized in that The determining, based on the VSSB index information, a time domain position corresponding to the VSSB includes: The time domain position corresponding to the target VSSB is determined according to the VSSB index information, the target carrier frequency information, and the target subcarrier spacing; wherein the target subcarrier spacing is the detection subcarrier spacing used when the target VSSB is detected.

13. A device for sending a reference signal, characterized in that: The device comprises: A configuration information determination module is configured to determine transmission configuration information of a synchronization signal block VSSB, wherein the transmission configuration information includes: a transmission period of the VSSB and a time domain position of a VSSB transmission time window within the transmission period; A sending module, configured to send N of the VSSBs in the periodically occurring VSSB sending time window according to the transmission configuration information, where N is an integer greater than or equal to 1; Wherein, the VSSB includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS; The sending module is configured to use frequency division multiplexing FDM to send the PSBCH signal and the DMRS signal in each VSSB of the N VSSBs; Wherein, the structure of the VSSB includes any of the following: a first VSSB structure, wherein the number of symbols occupied by the PSSS in the first VSSB structure is 2, the number of symbols occupied by the SSSS is 2, the number of symbols occupied by the PSBCH is 5, and the number of symbols occupied by the DMRS is 3; A second VSSB structure, wherein the VSSB duration of the second VSSB structure is unchanged relative to that of the first VSSB structure; wherein the number of symbols occupied by at least one reference signal is increased in the second VSSB structure, and the number of symbols occupied by the PSBCH is reduced; or, in the resource blocks corresponding to each or part of the symbols occupied by the PSBCH in the second VSSB structure, part of the REs are separated for carrying DMRS signals; Wherein, the sending module includes: a carrier frequency determination submodule, configured to determine target carrier frequency information for sending the VSSB; A time domain density determination submodule is configured to determine a target reference signal time domain density corresponding to each VSSB to be sent according to the target carrier frequency information and the current speed information of the vehicle-mounted device; A transmission information determination submodule is configured to determine the transmission information of the VSSB to be sent according to the target reference signal time domain density, the transmission information including: the target subcarrier spacing for sending the VSSB and the structure of the VSSB to be sent, wherein the structure of the VSSB to be sent includes: the number of symbols occupied by each signal and the occupied symbol positions; wherein, before adjusting the reference signal time domain density under the target carrier frequency, the structure of the VSSB to be sent is the first VSSB structure; when the reference signal time domain density under the target carrier frequency needs to be increased to the target reference signal time domain density corresponding to the comparison result, the structure of the VSSB to be sent is the second VSSB structure and / or the subcarrier spacing for sending the VSSB under the target carrier frequency is increased, wherein the comparison result indicates that the relative speed between the vehicle-mounted device and the preset receiving terminal is greater than or equal to the preset speed threshold; The sending submodule is configured to send the VSSB according to the transmission information of the VSSB to be sent within the VSSB sending time window.

14. The device according to claim 13, characterized in that The carrier frequency determination submodule includes: a configuration information receiving unit, configured to receive resource configuration information sent by a base station, wherein the resource configuration information is used to inform the vehicle-mounted device to use the configured resources to send the VSSB; A first carrier frequency determination unit is configured to determine the target carrier frequency information according to the resource configuration information; or, The second carrier frequency determination unit is configured to determine the target carrier frequency information according to the preset resource configuration information.

15. The device according to claim 13, characterized in that The current speed information includes the relative speed; The time domain density determination submodule includes: a comparing unit, configured to compare the relative speed with the preset speed threshold to obtain the comparison result; A time domain density determination unit is configured to determine the target reference signal time domain density according to the target carrier frequency information and the comparison result.

16. The device according to claim 15, characterized in that The time domain density determination unit is configured to increase the reference signal time domain density at the target carrier frequency to the target reference signal time domain density corresponding to the comparison result when the comparison result indicates that the relative speed is greater than or equal to the preset speed threshold.

17. The device according to claim 13, characterized in that The sending module comprises: An index information determination submodule, configured to determine VSSB index information corresponding to each of the VSSBs when N is an integer greater than 1; A target VSSB generation submodule is configured to load the VSSB index information into a setting signal of the VSSB to be sent, and generate a target VSSB carrying the index information; The target VSSB sending submodule is configured to send the target VSSB through multiple beams within the VSSB sending time window that occurs periodically.

18. The device according to claim 17, characterized in that The target VSSB generation submodule is configured to load the VSSB index information into the setting signal of the VSSB to be sent in any of the following ways: Indicating the VSSB index information through the corresponding DMRS target sequence; Loading the VSSB index information into the first bit of a preset PSBCH signal; Part of the bit values ​​of the VSSB index information are indicated by the corresponding DMRS target sequence, and the remaining bit values ​​are loaded into the second bit of the preset PSBCH signal.

19. A device for receiving a reference signal, characterized in that: The device comprises: The detection module is configured to detect N VSSBs sent by the vehicle-mounted device within a periodic synchronization signal block VSSB sending time window; wherein the VSSB includes: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS; An index information acquisition module, configured to acquire VSSB index information from the detected target VSSB; A position determination module, configured to determine a time domain position corresponding to the target VSSB according to the VSSB index information; a synchronization module, configured to perform time domain synchronization with the vehicle-mounted device according to the time domain position; Wherein, the structure of the VSSB includes any of the following: a first VSSB structure, wherein the number of symbols occupied by the PSSS in the first VSSB structure is 2, the number of symbols occupied by the SSSS is 2, the number of symbols occupied by the PSBCH is 5, and the number of symbols occupied by the DMRS is 3; A second VSSB structure, wherein the VSSB duration of the second VSSB structure is unchanged relative to that of the first VSSB structure; wherein the number of symbols occupied by at least one reference signal is increased in the second VSSB structure, and the number of symbols occupied by the PSBCH is reduced; or, in the second VSSB structure, in the resource blocks corresponding to each or part of the symbols occupied by the PSBCH, part of the REs are separated for carrying the DMRS signal; Before the vehicle-mounted device adjusts the time domain density of the reference signal under the target carrier frequency, the structure of the target VSSB is the first VSSB structure; when the time domain density of the reference signal under the target carrier frequency needs to be increased to the target reference signal time domain density corresponding to the comparison result, the structure of the target VSSB is the second VSSB structure and / or the subcarrier spacing for sending VSSB under the target carrier frequency is increased, wherein the comparison result indicates that the relative speed between the vehicle-mounted device and the preset receiving terminal is greater than or equal to a preset speed threshold.

20. The device according to claim 19, characterized in that The detection module comprises: A configuration information receiving submodule, configured to receive resource configuration information sent by a base station, wherein the resource configuration information is used to inform a receiving terminal to use the configured resources to receive the VSSB; a carrier frequency determination submodule, configured to determine target carrier frequency information for receiving the VSSB according to the resource configuration information; A subcarrier spacing determination submodule, configured to determine a detection subcarrier spacing according to the target carrier frequency information; The detection submodule is configured to detect the VSSB on the target resource using each of the detection subcarrier intervals.

21. The device according to claim 19, characterized in that The index information acquisition module includes: A parsing submodule is configured to parse the target VSSB to obtain various signals, wherein the various signals include: a primary side link synchronization signal PSSS, a secondary side link synchronization signal SSSS, a physical side link broadcast channel PSBCH signal and a demodulation reference signal DMRS; The index information acquisition submodule is configured to acquire the VSSB index information from a setting signal, and the setting signal includes: the PSBCH signal and / or the DMRS signal.

22. The device according to claim 21, characterized in that The index information acquisition submodule includes: A first index obtaining unit is configured to obtain the VSSB index information according to the information carried by the set DMRS sequence; or, The second index acquisition unit is configured to parse the VSSB index information from the first bit of the set PSBCH signal.

23. The device according to claim 21, characterized in that The index information acquisition submodule includes: A first bit value determining unit is configured to obtain a partial bit value corresponding to the VSSB index information according to the information carried by the set DMRS sequence; A second bit value determining unit is configured to obtain a remaining bit value corresponding to the VSSB index information from a second bit of a set PSBCH signal; The third index obtaining unit is configured to determine the VSSB index information according to the complete bit value composed of the partial bit value and the remaining bit value.

24. The device according to claim 19, characterized in that The position determination module is configured to determine the time domain position corresponding to the target VSSB based on the VSSB index information, the target carrier frequency information, and the target subcarrier spacing; wherein the target subcarrier spacing is the detection subcarrier spacing used when the target VSSB is detected.

25. A non-transitory computer-readable storage medium having computer instructions stored thereon, characterized in that: When the instruction is executed by a processor, the steps of any method described in claims 1 to 6 are implemented.

26. A non-transitory computer-readable storage medium having computer instructions stored thereon, characterized in that: When the instruction is executed by a processor, the steps of any method described in claims 7 to 12 are implemented.

27. A vehicle-mounted device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to execute the executable instructions to implement the steps of the method of claim 1.

28. A terminal, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to execute the executable instructions to implement the steps of the method of claim 7.

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