Signal processing method and device and related equipment

Abstract

The invention discloses a signal processing method and device and related equipment, and belongs to the technical field of communication, and the method comprises the steps that a terminal determines a cyclic prefix (CP) parameter according to first information, and the first information comprises a terminal type or related information of a first signal; the terminal receives the first signal according to the determined cyclic prefix (CP) parameter; wherein the first signal comprises a signal used for synchronizing or measuring or acquiring cell public information.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a signal processing method, apparatus, and related equipment. Background Art

[0002] Currently, the initial access synchronization signal block (SSB) uses the same type of cyclic prefix (CP) to reduce the complexity of UE initial access.

[0003] However, this method is not applicable to some communication scenarios, such as cells with a larger propagation delay in a non-terrestrial network (NTN) system, using a larger subcarrier spacing (SCS) in frequency range (FR) 3, cells with a larger scale in a cell-free network, terminals with relaxed time-frequency accuracy requirements, etc. The CP used may not provide sufficient time length to resist the inter-symbol interference caused by propagation delay and synchronization accuracy error. Summary of the Invention

[0004] Embodiments of this application provide a signal processing method, apparatus, and related equipment, which can solve the problem of degraded communication performance caused by the inapplicability of the used CP.

[0005] In a first aspect, a signal processing method is provided, and the method includes:

[0006] A terminal determines cyclic prefix CP parameters according to first information, where the first information includes terminal type or related information of a first signal;

[0007] The terminal receives the first signal according to the determined cyclic prefix CP parameters;

[0008] Wherein, the first signal includes a signal for synchronization, measurement, or obtaining cell public information.

[0009] In a second aspect, a signal processing method is provided, including:

[0010] A network-side device determines cyclic prefix CP parameters according to first information, where the first information includes terminal type or related information of a first signal;

[0011] The network-side device sends the first signal according to the determined cyclic prefix CP parameters;

[0012] Wherein, the first signal includes a signal for synchronization, measurement, or obtaining cell public information.

[0013] In a third aspect, a signal processing apparatus is provided, including:

[0014] A first processing module, configured to determine cyclic prefix (CP) parameters according to first information, where the first information includes terminal type or related information of a first signal;

[0015] A receiving module, configured to receive the first signal according to the determined cyclic prefix (CP) parameters;

[0016] Wherein, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

[0017] In a fourth aspect, a signal processing apparatus is provided, characterized by including:

[0018] A second processing module, configured to determine cyclic prefix (CP) parameters according to first information, where the first information includes terminal type or related information of a first signal;

[0019] A transmitting module, configured to transmit the first signal according to the determined cyclic prefix (CP) parameters;

[0020] Wherein, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

[0021] In a fifth aspect, a terminal is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0022] In a sixth aspect, a terminal is provided, including a processor and a communication interface. Wherein, the processor is configured to determine cyclic prefix (CP) parameters according to first information, where the first information includes terminal type or related information of a first signal; the communication interface is configured to receive the first signal according to the determined cyclic prefix (CP) parameters;

[0023] Wherein, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

[0024] In a seventh aspect, a network-side device is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0025] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. The processor is configured to determine cyclic prefix (CP) parameters according to first information, where the first information includes terminal type or relevant information of a first signal; and the communication interface is configured to send the first signal according to the determined CP parameters.

[0026] Wherein, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

[0027] In a ninth aspect, a readable storage medium is provided, on which a program or instructions are stored. When the program or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0028] In a tenth aspect, a wireless communication system is provided, including: a terminal and a network-side device. The terminal can be configured to execute the steps of the method described in the first aspect, and the network-side device can be configured to execute the steps of the method described in the second aspect.

[0029] In an eleventh aspect, a chip is provided, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement the method described in the first aspect, or implement the method described in the second aspect.

[0030] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the signal processing method described in the first aspect, or implement the steps of the signal processing method described in the second aspect.

[0031] In an embodiment of the present application, the terminal determines applicable CP parameters according to the first information, and thus receives the first signal based on the CP parameters. The first signal is sent by the network-side device after determining applicable CP parameters according to the first information. In this way, the used CP can provide a sufficient time length to resist inter-symbol interference caused by propagation delay and synchronization accuracy error, improving communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a block diagram of a wireless communication system;

[0033] Figure 2 is a schematic flowchart of a method according to an embodiment of the present application;

[0034] Figure 3 is a schematic flowchart of a method according to an embodiment of the present application;

[0035] Figure 4It is one of the schematic diagrams of the modules of the device according to the embodiments of the present application;

[0036] Figure 5 It is the second of the schematic diagrams of the modules of the device according to the embodiments of the present application;

[0037] Figure 6 It is the schematic structural diagram of the communication device according to the embodiments of the present application;

[0038] Figure 7 It is the schematic structural diagram of the terminal according to the embodiments of the present application;

[0039] Figure 8 It is the schematic structural diagram of the network-side device according to the embodiments of the present application. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0041] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0042] The term "indicate" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, the direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; the indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0043] It should be noted that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th th Generation (6G) communication system.

[0044] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0045] For ease of understanding, some content related to the embodiments of this application is described below:

[0046] I. Cell search and synchronization process in 5G NR technology:

[0047] In 5G NR technology, for a User Equipment (UE) to achieve downlink synchronization, it needs to obtain the frequency point of the access carrier by searching for Synchronization Signal / Physical Broadcast Channel Blocks (SS / PBCH Blocks, SSBs). Since the NR spectrum range is very wide, to reduce the complexity of the search, the UE performs SSB searches at certain frequency intervals specified by the protocol, and this frequency interval is called the Synchronization Raster. The UE detects the received power of the synchronization signal (SS-RSRP) on the corresponding frequency points according to the Synchronization Raster, and selects a suitable SSB based on the threshold value (rsrp-ThresholdSSB) configured by the network. That is, if there is an SSB with a signal quality SS-RSRP higher than the threshold value, the SSB that meets the condition is selected; if there are multiple SSBs that meet the condition, one of them is selected (the selection scheme is determined by the terminal implementation); if no SSB meets the condition, an SSB is selected from the entire SSB set (the selection scheme is determined by the terminal implementation). The UE determines the set of RACH occasion (RO) resources and the set of preamble resources associated with the SSB according to the association relationship between the SSB and the Random Access Channel (RACH); the UE randomly selects an RO resource and a preamble resource from the resource sets and sends Msg1 to initiate the random access process.

[0048] II. Structure of the Synchronization Signal Block SSB in 5G NR Technology:

[0049] To enable the UE to search for a reasonable cell and synchronize with the selected cell, it is usually necessary for the network to broadcast synchronization signals and provide certain primary information about the cell. The UE obtains the required information through the SSB. The Synchronization Signal Block SSB includes: Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), Physical Broadcast Channel (PBCH), and PBCH Demodulation Reference Signal (DMRS).

[0050] Among them, the main functions of the PSS and SSS are to achieve symbol-level synchronization and complete the Physical-layer cell identity (PCI). Determination. The PBCH contains the master information block MIB of the cell and some other information. The PBCH-DMRS serves as the demodulation reference signal for the PBCH and contains some SSB-index information (the lower three bits).

[0051] III. Cyclic Prefix

[0052] In an Orthogonal Frequency Division Multiplex (OFDM) system, an OFDM symbol usually consists of two parts. The first part is the cyclic prefix (CP), and the second part is the time-domain signal obtained after IFFT transformation. The cyclic prefix is composed of the last Ncp sampling points of the second part.

[0053] Without CP, there may be inter-symbol interference between adjacent OFDM symbols. For example, due to multipath delay, the tail of the previous OFDM symbol may overlap with multiple sampling points at the start of the second OFDM symbol, or due to timing error, the FFT time window at the receiving end may include the last multiple sampling points of the previous OFDM symbol and some sampling points of the current OFDM symbol. Adding a cyclic prefix with a length not less than the total delay (e.g., including transmission delay and delay caused by timing error) can ensure that only the signal of the current OFDM symbol is included within the FFT time window at the receiving end, without inter-symbol interference. It is not difficult to see that the length of CP is related to the channel environment. For example, in an environment with a small propagation delay, a shorter CP is sufficient to eliminate inter-symbol interference, while in an environment with a large propagation delay, a longer CP is required. Therefore, the NR / LTE system supports two types of CP, one is called normal CP (NCP), and the other is called extended CP (ECP). CP can avoid inter-symbol interference, but since the CP part cannot carry additional information, the overhead of the CP part will lead to a reduction in resource efficiency, that is, within an OFDM symbol, the longer the CP, the higher the proportion it occupies, and the lower the transmission efficiency of this OFDM symbol.

[0054] The NR system can support different sub-carrier spacings (SCS). For different SCSs, the ratio of the number of sampling points in the first part (CP) to the second part within an OFDM symbol is the same, thus ensuring the same transmission efficiency. For example, for any SCS, for a specific OFDM symbol, the ratio of the number of sampling points of the first part NCP to the second part is 144:2048. If the first part is ECP, then the ratio is 512:2048. It can be seen that since the ratio of the first part to the second part does not change with SCS, the time length of the CP part decreases as SCS increases.

[0055] In the NR system, after evaluation, although the CP length shortens as the SCS increases, in the FR1 scenario, when the SCS = 15 KHz and 30 KHz, the NCP length is sufficient to reduce inter-symbol interference. However, when the SCS = 60 KHz, the NCP length is insufficient under some channel conditions. Therefore, when the SCS = 60 KHz, both NCP and ECP are supported. In the FR2 and FR2-2 scenarios, due to the reduced coverage range and the use of analog beams, the multipath delay is significantly shorter than that in FR1. Therefore, although the CP length shortens as the SCS increases, the length of the NCP is still sufficient.

[0056] In addition, for the NR / LTE system, the time and frequency domain deviations of the UE or the base station caused by hardware need to meet specific requirements. For example, the UE needs to meet the carrier frequency offset (CFO) not exceeding 0.1 ppm, and the UE regularly corrects the time and frequency domain deviations according to the synchronization signal. Therefore, the length of the CP required due to timing errors can be basically ignored.

[0057] In the NR system, when the base station configures the BWP, it configures the unique SCS and the unique CP type (NCP or ECP) for this BWP. At initial access, to reduce the complexity of the UE, only some SCs are supported, for example, the 60 KHz SCS is not supported. Therefore, at initial access, the UE does not need to blindly detect the CP type either. The UE can search for the SSB based on the NCP.

[0058] In the LTE system, although only one SCS = 15 KHz is supported for downlink transmission, two CP types, NCP and ECP, can be supported. When the UE detects the PSS / SSS at initial access, it needs to blindly detect the CP type.

[0059] Next, in combination with the accompanying drawings, the signal processing method, apparatus, and related devices provided by the embodiments of the present application will be described in detail through some embodiments and their application scenarios.

[0060] As Figure 2 shown, a signal processing method according to an embodiment of the present application includes:

[0061] Step 201, the terminal determines the cyclic prefix CP parameter according to the first information, where the first information includes the terminal type or the relevant information of the first signal;

[0062] Step 202, the terminal receives the first signal according to the determined cyclic prefix CP parameter;

[0063] Wherein, the first signal includes a signal for synchronization, measurement, or obtaining cell public information.

[0064] In this way, according to the above steps, the terminal determines the applicable CP parameters based on the first information, and thus receives the first signal based on the CP parameters. The first signal is sent by the network-side device after determining the applicable CP parameters according to the first information. In this way, the used CP can provide a sufficient time length to resist the inter-symbol interference caused by the propagation delay and the synchronization accuracy error, and improve the communication performance.

[0065] Optionally, in this embodiment, the terminal type includes at least one of the following:

[0066] Whether it is a terminal supporting non-terrestrial networks;

[0067] Whether it is a terminal with reduced capabilities;

[0068] Whether it is a terminal supporting low power consumption.

[0069] Here, a terminal supporting non-terrestrial networks is a non-NTN terminal; a terminal not supporting non-terrestrial networks is an NTN terminal; a terminal with reduced capabilities is a Redcap terminal; a terminal supporting low power consumption can be an AIOT or LP-WUR terminal; a terminal that is not a terminal with reduced capabilities or not a low-power terminal is an ordinary terminal. Therefore, the terminal type can include at least one of NTN or non-NTN terminals, Redcap or ordinary terminals, low-power terminals or ordinary-power terminals.

[0070] Optionally, the first signal includes at least one of the following:

[0071] A signal for synchronization;

[0072] A signal for measurement;

[0073] A broadcast signal;

[0074] A broadcast channel;

[0075] A system message.

[0076] Among them, the signal for synchronization may only include PSS or SSS; the signal for synchronization includes PSS, SSS, and PBCH. Of course, the signal for synchronization is a sequence or a physical channel with a payload.

[0077] Optionally, the CP parameters include the CP type or the CP length.

[0078] Among them, the CP type can be NCP or ECP. The CP parameters can uniquely determine the CP length. For example, according to the SCS and ECP or NCP, the CP length of a SCS is determined. For another example, the NCP of a given SCS can also have multiple lengths to be applicable to different scenarios. Multiple CP lengths can be numbered, and the CP parameters are used to determine the number, so that the length of the CP can be uniquely determined.

[0079] Optionally, in this embodiment, the related information of the first signal includes at least one of the following:

[0080] The frequency-domain information of the first signal;

[0081] The time-domain information of the first signal;

[0082] The type of signal included in the first signal;

[0083] The index of the first signal;

[0084] The indication information used to determine the first signal.

[0085] Optionally, the frequency-domain information includes at least one of the following:

[0086] The Sync Raster where the first signal is located;

[0087] The Band where the first signal is located;

[0088] The subband where the first signal is located;

[0089] The carrier where the first signal is located;

[0090] The Frequency Range (FR) where the first signal is located;

[0091] The relative frequency-domain position relationship between the first signal and the second signal;

[0092] The subcarrier spacing SCS of the first signal.

[0093] Wherein, if the frequency-domain information includes the Sync Raster where the first signal is located, the standard can pre-define one or a group of CP parameters corresponding to the Sync Raster, and the terminal can determine the CP parameters according to the Sync Raster.

[0094] Wherein, if the frequency-domain information includes the Band or subband or carrier or FR where the first signal is located, the standard can pre-define one or a group of CP parameters corresponding to the Band, subband, carrier or FR, and the terminal can determine the CP parameters according to the Band, subband, carrier or FR.

[0095] Among them, the second signal can be the same as the first signal, which is a signal used for synchronizing, measuring, or obtaining cell public information, or it can be other signals. The relative frequency-domain position relationship between the first signal and the second signal includes at least one of the following: whether the first signal and the second signal are within the same frequency-domain unit (sub-band, carrier, frequency band, or frequency band combination (band combination)), for example, whether the carriers where the first signal and the second signal are located are continuous; the frequency-domain interval between the first signal and the second signal is less than a specific threshold, for example, whether the interval between the frequency-domain resources of the first signal and the second signal is less than a given threshold.

[0096] Among them, if the frequency-domain information includes the SCS of the first signal, the standard can pre-define one or a group of CP parameters corresponding to the SCS, and the terminal can determine the CP parameters according to the SCS. Among them, the first signal and the second signal with the same SCS can be defined as corresponding to the same CP parameter, or corresponding to different CP parameters.

[0097] Optionally, the time-domain information includes at least one of the following:

[0098] The time unit where the first signal is located;

[0099] The relative time-domain position relationship between the first signal and the second signal;

[0100] The relative time-domain position relationship between the signals included in the first signal.

[0101] Among them, the time unit includes but is not limited to OFDM symbol, time slot, sub-frame, half-frame, frame, super-frame. If the time-domain information includes the time unit where the first signal is located, the standard can pre-define one or a group of CP parameters corresponding to the time unit, and the terminal can determine the CP parameters according to the time unit. Among them, the time unit can be represented by a time unit index, and the time unit index can be the number of the OFDM symbol, time slot, sub-frame, half-frame, frame, or super-frame.

[0102] Among them, the second signal can be the same as the first signal, which is a signal used for synchronizing, measuring, or obtaining cell public information, or it can be other signals. The relative time-domain position relationship between the first signal and the second signal includes at least one of the following: whether the first signal and the second signal are within the same time unit; whether the time-domain displacement between the first signal and the second signal is less than a specific threshold.

[0103] Among them, the first signal may include multiple signals. The relative time-domain position relationship between the signals included in the first signal includes at least one of the following: whether the signals included in the first signal are in the same time unit; whether the time-domain displacement between the signals included in the first signal is less than a specific threshold. For example, if the first signal includes PSS and SSS, the terminal can determine the CP parameter of SSS in the first signal based on whether the time-domain displacement between PSS and SSS is less than a specific threshold, where the CP parameter of PSS is known. Another example, if the first signal includes SS and PBCH, the terminal can determine the CP parameter of PBCH in the first signal based on whether the time-domain displacement between SS and PBCH is less than a specific threshold, where the CP parameter of SS is known.

[0104] Among them, if the relevant information of the first signal includes the types of the signals included in the first signal, the standard can pre-define the CP parameters corresponding to the types of the signals, and the terminal can determine the CP parameters according to the types of the signals included in the first signal. For example, the network configuration or protocol stipulates that PSS in the first signal uses the first CP parameter (such as normal CP), and other parts (SSS / PBCH and their DMRS) use the second CP parameter (such as normal CP or extended CP).

[0105] Among them, the network-side device may send multiple or multiple groups of first signals, and each first signal has a corresponding number, that is, the index of the first signal. Optionally, the standard pre-defines that the value of the index of the first signal with a given CP length belongs to a specific set, or the standard pre-defines that the values of the indexes of the first signals with different CP lengths satisfy a pre-defined relationship. The index of the first signal is obtained by interleaving and numbering the first signals corresponding to different CP parameters. For example, for two CP types (NCP and ECP), to achieve relatively balanced delay, the first signals of NCP and ECP are interleaved in the time domain. That is, the index of the first signal of the first CP type is i, i + 2,...; the index of the first signal of the second CP type is i + 1, i + 3,... Among them, the time-domain resources of different synchronization signals are arranged in ascending order of the index.

[0106] Alternatively, to reduce the latency of each first signal of CPs of the same type, within one period, after all the first signals of one type of CP end, the synchronization signal of another type of CP is sent. The index of the first signal is obtained by sequentially numbering the first signals corresponding to the same CP parameters. For example, for two types of CPs, after sequentially numbering the N first signals of one type of CP (e.g., within the nth time unit, where the time unit is the SSB period), then sequentially numbering the N first signals of the other type of CP (e.g., within the (n + 1)th time unit, where the time unit is the SSB period), the indices of the first signals of the first CP type are i, i + 1, …, i + N - 1, and the indices of the first signals of the second CP type are i + N, i + N + 1, …, i + 2N - 1.

[0107] Of course, for different frequency bands (such as different bands or sub - bands or carriers or FRs or different sync rasters), for different deployment modes, cell types, the standard can pre - define different implementation methods. Alternatively, the standard pre - defines one implementation method applicable to various scenarios. According to another example, the network can configure one of the above two implementation methods.

[0108] Optionally, when the indices of multiple first signals correspond to the same CP parameter,

[0109] among the indices of the multiple first signals, there is a specific interval threshold between adjacent indices; or

[0110] the indices of the multiple first signals are consecutive signal numbers; where the signal numbers are generated by sequentially sorting based on the order of time units.

[0111] In this way, when interleaving and numbering the first signals corresponding to different CP parameters, for the indices of multiple first signals corresponding to the same CP parameter, there is a specific interval threshold between adjacent indices, and this specific interval threshold is determined according to the number of CP parameters. For example, the specific interval threshold for two CP parameters is 2. When sequentially numbering the first signals corresponding to the same CP parameter, the indices of multiple first signals corresponding to the same CP parameter are consecutive.

[0112] Optionally, the second signal includes at least one of the following:

[0113] A signal for synchronization;

[0114] A signal for measurement;

[0115] A broadcast signal;

[0116] A broadcast channel;

[0117] A system message.

[0118] Optionally, the indication information includes at least one of the following:

[0119] Information on the first signal for the serving cell;

[0120] Information on the first signal for the neighboring cell;

[0121] Information on the first signal for the accessible cell;

[0122] Information for determining the first signal based on demand.

[0123] Among them, the information on the first signal for the serving cell may be the secondary cell (Scell) information configured by the network side. The Scell information may include the CP parameters of the first signal of the Scell; it may be the information that the Y-level first signal indicates the X-level first signal (Y < X), where the information includes the CP parameters of the X-level first signal; it may be the information that the PSS or SSS indicates the PBCH, where the information includes the CP parameters of the PBCH.

[0124] Among them, the information on the first signal for the neighboring cell may be the neighboring cell measurement information configured by the network side, or the neighboring cell handover information, or the information on the activation signal of the neighboring cell's on-demand synchronization signal (such as on demand SSB), where the information includes the CP parameters of the synchronization signal.

[0125] Among them, the information on the first signal for the accessible cell is obtained when the terminal has not accessed any cell yet. The first signal may be the PBCH of the non-cell defining (CD) SSB, and the information may be the information indicated by one such PBCH, and the PBCH indicates the CP parameters of the CD-SSB.

[0126] Among them, the information for determining the first signal based on demand may be the information on the activation signal of the on demand SSB.

[0127] In this way, in some scenarios, after the terminal has accessed at least one cell, the terminal can determine the CP parameters of the first signal of the serving cell or other cells according to the configuration information of the network side:

[0128] 1) In one implementation, if the cell is a Scell, the network side can configure the Scell for the terminal, and the information for configuring the Scell (such as Scell information) may include the CP parameter of the first signal for the Scell. Optionally, the network side can configure multiple CP parameters for one Scell, and the network side can indicate one CP parameter in the signaling for activating the Scell. Optionally, the network side can configure one CP parameter applicable to multiple first signals of the Scell, or the network side can configure CP parameters for each first signal respectively. For example, in some deployment scenarios, different SSB indexes support different CP lengths. Then, the network side can configure the CP length of each SSB respectively, or the network side can configure the CP length of each group of SSBs.

[0129] 2) In one implementation, the current serving cell can provide the terminal with information of multiple neighboring cells, such as the measurement information of neighboring cells for cell selection / reselection, which may include the CP parameter of the first signal for the neighboring cell. The network side can configure one CP parameter applicable to multiple first signals of one or a group of neighboring cells, or the network side can configure CP parameters for each first signal respectively.

[0130] 3) In one implementation, the current serving cell can provide the terminal with the configuration information of the first signal based on demand (such as on demand SSB) of the current cell or another cell (such as Scell or neighboring cell), such as the information of the wake-up signal (WUS) for the terminal to request on demand SSB, which may include the CP parameter of the first signal for the cell. Optionally, when requesting on demand SSB, the terminal can report the preferred CP parameter. For example, the terminal can report to the current serving cell the CP type in the cell of the on demand SSB preferred by the terminal, or the terminal can report the preferred CP type to the cell of the on demand SSB. For example, the wake-up signal sent by the terminal can explicitly or implicitly indicate the preferred CP parameter. Optionally, after receiving the wake-up signal sent by the terminal, the network side can send a downlink signal to configure the CP parameter or confirm the CP preference reported by the terminal. For example, the downlink signal is a confirmation signal for responding to the wake-up signal sent by the terminal, which may carry the information of the CP or the confirmation information of the CP preference reported by the terminal.

[0131] 4) In one implementation, the current serving cell can provide the terminal with the CP parameter of the first signal of the current serving cell. If the network side needs to update the CP parameter of the first signal of the serving cell, the network can notify the terminal before changing the CP of the first signal. For example, the network can carry the CP parameter of the first signal through system information, or paging information, or user-specific signaling. The terminal can determine the CP length of the first signal according to the information.

[0132] Optionally, the terminal determines a cyclic prefix CP parameter according to the first information, including:

[0133] The terminal determines a CP parameter corresponding to the first information based on the corresponding relationship between the first information and the CP parameter.

[0134] According to one implementation, the standard can pre-define the corresponding relationship between Sync Raster and CP parameters. When the terminal attempts to receive the first signal according to Sync Raster, it can attempt to receive the first signal according to the CP parameter corresponding to the Sync Raster. In this way, the number of blind detections of the synchronization signal during the initial access process of the terminal can be reduced, and the complexity of the terminal can be reduced. As an example, one Sync Raster uniquely corresponds to one CP parameter, such as NCP or ECP. Another example, if one Sync Raster corresponds to one or more CP parameters, the terminal can determine a set of CP parameters according to Sync Raster and determine a unique CP parameter based on blind detection or other rules.

[0135] According to one implementation, the standard can pre-define the corresponding relationship between Band or subband or carrier or FR and CP parameters. When the terminal attempts to receive the first signal in a given band or subband or carrier or FR, it can attempt to receive the first signal according to the CP parameter corresponding to the band or subband or carrier or FR. In this way, the number of blind detections of the first signal during the initial access process of the terminal can be reduced, and the complexity of the terminal can be reduced.

[0136] According to one implementation, the standard can pre-define the corresponding relationship between SCS and CP parameters. Therefore, the terminal can determine the CP parameter according to SCS. Among them, the first signal (such as the signal for synchronization) and the second signal (such as the signal not for synchronization) with the same SCS can be defined as corresponding to the same CP parameter or different CP parameters. For example, for a given SCS, to reduce the complexity of the terminal detecting the first signal, the standard pre-defines one CP parameter. The terminal can uniquely determine the CP parameter according to the SCS of the first signal. However, for other signals, to provide flexibility, the standard can pre-define multiple CP parameters. The terminal can determine the CP parameters of other signals according to the indication of the network or other means.

[0137] According to one implementation, the standard can pre-define different time resource patterns for the first signal with different CP lengths. The terminal can determine the CP length of the first signal according to the time unit where the first signal is located. As an example, the time unit indices of the first signals with different CP lengths are different. The time unit is at least one of an OFDM symbol, a time slot, a sub-frame, a frame, and a super-frame. For example, the first signal with ECP is located in time slot set i, and the first signal with NCP is located in time slot set j. If the network side configures the time domain resource of the first signal of a cell for the terminal (for example, the network side configures the first signal of Scell), the terminal can determine the CP type of the configured first signal. In this way, the terminal can uniquely determine the CP parameters and at the same time save the overhead of configuring the CP type.

[0138] According to one implementation, the standard can pre-define the correspondence between a specific type of signal included in the first signal and the CP parameters in the time domain position. The terminal can determine the CP parameters of the corresponding part of the first signal according to this correspondence.

[0139] According to one implementation, the standard can pre-define the correspondence between the index of the first signal and the CP parameters. The terminal can try to receive the first signal according to this correspondence. For example, if the CP parameters are related to the terminal type, and the NTN terminal only tries to receive the first signal with ECP, then the NTN terminal can determine the time interval of each first signal with ECP (determine the time interval of the synchronization signal according to the index of the synchronization signal), and further determine the CP parameters, and use the determined CP parameters to receive the first signal.

[0140] In addition, in this embodiment, optionally, the first signal and the second signal are different-level signals for synchronization or measurement or obtaining cell common information.

[0141] For example, both the first signal and the second signal are signals for synchronization. The first signal is a signal of level X, and the second signal is a signal of level Y. Among them, Y can be less than X. Then, the relative frequency domain position relationship between the first signal and the second signal is the relative frequency domain position relationship between the signal of level X and the signal of level Y; the relative time domain position relationship between the first signal and the second signal is the relative time domain position relationship between the signal of level X and the signal of level Y.

[0142] Optionally, the terminal determines the cyclic prefix CP parameters according to the first information, including:

[0143] The terminal determines the CP parameters of the first signal based on the CP parameters of the second signal and the relative frequency domain position relationship or relative time domain position relationship between the first signal and the second signal.

[0144] That is, the terminal knows the CP parameter of the second signal, and thus combines the CP parameter of the second signal, as well as the relative frequency domain position relationship or relative time domain position relationship between the first signal and the second signal to determine the CP parameter of the first signal.

[0145] In one implementation manner, the standard can pre-define the CP parameter corresponding to the first signal that satisfies a specific frequency domain position relationship, and then the terminal can determine the CP parameter of the first signal according to the relative frequency domain position relationship between the first signal and the second signal. Among them, the relative frequency domain position relationship includes whether the first signal and the second signal are in the same sub-band, carrier, band or specific band combination, or whether the frequency domain interval between the second signal and the second signal is less than a given threshold. For example, whether the first signal and the second signal are in a continuous plurality of carriers, or whether the interval of the frequency domain resources of the first signal and the second signal is less than a given threshold. When the terminal detects the second signal, and the second signal explicitly or implicitly indicates the frequency domain information of the first signal, the terminal can determine the CP information of the first signal according to the frequency domain position relationship between the first signal and the second signal. This method can at least reduce the complexity of the terminal detecting the first signal.

[0146] In an example, if the first signal and the second signal are the same type of signals at different levels, then the terminal can determine the CP parameter of the first signal according to the frequency domain position relationship of each level of signals. For example, the terminal determines the CP parameter of the second signal such as the Y-level SSB based on blind detection or predefined rules. Specifically, according to the Sync raster, the second-level SSB is determined to be ECP, or the standard pre-defines the CP of the second-level SSB as ECP. Then, the CP parameter of the first signal such as the X-level SSB (Y < X) can be determined according to the relative frequency domain position relationship between the X-level SSB and the Y-level SSB. For example, if the resources of the X-level and Y-level SSBs occupy different frequency domain resources but at least partially overlap in time domain resources, the CP parameters of the two-level SSBs are the same, then the terminal can determine the CP parameter of the X-level SSB. For example, if the frequency domain interval between the two-level SSBs is less than or equal to the predefined threshold, the CP parameters of the two-level SSBs are the same, then the terminal can determine the CP parameter of the X-level SSB.

[0147] An example is that the first signal is a non-cell-specific synchronization signal (e.g., NCD-SSB). Usually, a terminal cannot access a cell based solely on the NCD-SSB. For example, the NCD-SSB does not indicate the control channel information for receiving system information, such as SIB1. Therefore, the terminal cannot access this cell. The non-cell-specific synchronization signal can indicate the information of a second signal, such as a cell-specific synchronization signal (e.g., CD-SSB). Usually, a terminal can access a cell based on the CD-SSB. For example, the CD-SSB indicates the control channel information for receiving system information, such as SIB1. The terminal can obtain SIB1 and access this cell. Then, the CP parameter of the second signal CD-SSB can be determined according to the relative frequency domain position relationship between the CD-SSB and the NCD-SSB.

[0148] Of course, if the first signal includes multiple different signals or channels, the terminal can determine the CP parameters of other signals in the first signal according to the CP parameters of a certain signal in the known first signal and its relative frequency domain position relationship or relative time domain position relationship with other signals in the first signal.

[0149] In an example, if the first signal includes at least two different signals / channels, such as SS and PBCH, then the terminal can determine the CP parameters according to the frequency domain position relationship of each signal / channel of the first signal. For example, the terminal determines the CP parameters of SS in the first signal based on blind detection or predefined rules, such as determining the CP parameters of SS according to the Band. Then, the CP parameters of PBCH in the first signal can be determined according to the relative frequency domain position relationship between PBCH and SS. For example, the terminal determines the CP parameters of PSS in the first signal based on blind detection or predefined rules, such as determining the CP parameters of PSS according to the Band. Then, the CP parameters of SSS and PBCH in the first signal can be determined according to the relative frequency domain position relationship between SSS / PBCH and PSS. Of course, in this example, SS can also be regarded as the second signal and PBCH as the first signal; PSS can be regarded as the second signal and SSS / PBCH as the first signal.

[0150] According to one implementation, the standard can predefined the CP parameters corresponding to the first signal that satisfies a specific time domain position relationship. The terminal can determine the CP parameters of the first signal according to the relative time domain relationship between the first signal and the second signal. For example, when the terminal detects the second signal and the second signal explicitly or implicitly indicates the time domain information of the first signal, the terminal can determine the CP information of the first signal according to the time domain position relationship between the first signal and the second signal. This method can at least reduce the complexity of the terminal detecting the first signal.

[0151] In one example, if the first signal and the second signal are the same type of signals with different levels, the terminal can determine the CP parameter of the first signal according to the time-domain position relationship of the signals at each level. For example, if the terminal determines the CP parameter of the second signal, such as the CP parameter of the first-level SSB, based on blind detection or predefined rules, then the CP parameter of the first signal, that is, the second-level SSB, can be determined according to the relative time-domain position relationship between the second-level SSB and the first-level SSB. For example, if the time-domain interval of the time-domain resources of the two-level SSBs is less than or equal to a predefined threshold, the CP parameters of the two-level SSBs are the same; otherwise, the CP parameters of the two-level SSBs can be different. Another example is that the standard predefined set of time intervals Ti of the two-level SSBs is defined, and the CP parameter corresponding to each time interval Ti is defined (optionally, the CP parameter is related not only to Ti but also to the CP parameter of the first-level SSB). Then, the terminal can determine the CP parameter of the second-level SSB according to the time-domain interval Ti of the second-level SSB indicated explicitly or implicitly by the first-level SSB, or the terminal can blindly detect multiple Ti based on the given CP parameter to detect the second-level SSB.

[0152] In one example, if the first signal includes at least two different signals or channels, such as SS and PBCH, the terminal can determine the CP parameter according to the time-domain position relationship of each signal or channel in the first signal. For example, if the terminal determines the CP parameter of SS in the first signal based on blind detection or predefined rules, then the CP parameter of PBCH in the first signal can be determined according to the relative time-domain position relationship between PBCH and SS. SS can explicitly or implicitly indicate the time displacement of PBCH relative to SS, and the terminal can determine the CP parameter of the second synchronization signal according to the indicated time displacement. Or the terminal can blindly detect multiple Ti, and each Ti is based on the given CP parameter, to detect the second synchronization signal. Of course, in this example, SS can also be regarded as the second signal and PBCH as the first signal; PSS can be regarded as the second signal and SSS / PBCH as the first signal.

[0153] In one example, the first signal is a non-cell-customized synchronization signal (such as NCD-SSB), and the non-cell-customized synchronization signal can indicate the information of the second signal. For example, the NCD-SSB indicates the time and frequency-domain position information of a cell-customized synchronization signal CD-SSB. Then, the CP parameter of the first signal NCD-SSB can be determined according to the relative time-domain position relationship between CD-SSB and NCD-SSB, or according to the time unit index where NCD-SSB is located.

[0154] In addition, in this embodiment, in some scenarios, the terminal may determine the CP parameter of the first signal according to the indication information of the second signal. Among them, the indication information of the second signal includes the CP information of the first signal. The CP parameter of the first signal is whether the CP type / length of the first signal is the same as that of the second signal, or the CP parameter of the first signal is the CP type / length of the first signal.

[0155] In one implementation, the second signal is the Y-th level SSB, and the first signal is the X-th level SSB, where Y < X. According to another implementation, the second signal is the PSS, the first signal includes at least the SSS, or the second signal is the PSS / SSS, and the first signal is the system information (such as PBCH or SIB). According to another implementation, the second signal is the NCD-SSB, and the first signal is the CD-SSB.

[0156] Optionally, the CP parameter of the first signal indicated by the second signal may be indicated by time and / or frequency domain information respectively. Optionally, the CP parameter of the first signal indicated by the second signal may be jointly indicated by time and frequency domain information. For example, the time domain information of the first signal is pre-defined by the standard (which may be referenced by the time domain position of the second signal), and the time domain information is presented in the form of a table. Each row in the table provides a kind of time domain information and the CP parameter.

[0157] It should also be noted that in this embodiment, the terminal may also determine the CP parameter of the second signal based on the CP parameter of the first signal and the relative frequency domain position relationship or relative time domain position relationship between the first signal and the second signal. The specific implementation method is similar to that of determining the CP parameter of the first signal above and will not be elaborated here.

[0158] In addition, in the embodiment of the present application, the terminal may determine the CP parameter of the first signal of a cell according to one item of the above first information, or may also combine multiple items of the first information to determine the CP parameter of the first signal of a cell. For example, the first signal includes signal A and signal B. The terminal may determine the CP length of signal A in the first signal according to the Sync raster, and determine the CP length of signal B according to the indication information of signal A (determine the CP length of signal B according to the time domain or frequency domain information of signal B indicated by signal A, or determine the CP length according to the CP parameter of signal B indicated by signal A). For another example, the terminal may determine the CP length of signal A according to the terminal type, and determine the CP length of signal B according to the indication information of signal A. For another example, the terminal may determine the CP length of signal A according to the information of the first signal (such as the CP parameter) provided by the network node for the neighboring cell or Scell, and determine the CP length of signal B according to the indication information of signal A.

[0159] It should be noted that in this embodiment, a terminal may only attempt to receive the first signal of one CP type, or a terminal may attempt to receive the first signals of multiple CP types. For example, in a cell, the network side sends multiple SSBs, where some SSBs use ECP for a larger coverage area and some SSBs use NCP for a smaller coverage area. The terminal may attempt to receive the SSBs of ECP and the SSBs of NCP and select the best SSB.

[0160] In summary, the method of the embodiment of the present application can support multiple CP types of signals compared with the single CP type of the initial access signal to meet the requirements of various different deployment scenarios and terminal types. At the same time, through predefined rules and / or signaling configuration, it assists the terminal to determine the CP type of the signal, thereby reducing the complexity of the terminal's initial access.

[0161] As Figure 3 shown, a signal processing method of the embodiment of the present application includes:

[0162] Step 301, the network side device determines the cyclic prefix CP parameter according to the first information, where the first information includes the terminal type or the related information of the first signal;

[0163] Step 302, the network side device sends the first signal according to the determined cyclic prefix CP parameter;

[0164] Wherein, the first signal includes a signal for synchronization or measurement or obtaining cell public information.

[0165] In this way, according to steps 301 and 302, the network side device will determine the applicable CP parameter according to the first information, and thus send the first signal based on this CP parameter. In this way, the used CP can provide a sufficient time length to resist the inter-symbol interference caused by the propagation delay and the synchronization accuracy error, and improve the communication performance. Moreover, the terminal will also determine the applicable CP parameter according to the first information, and thus receive the first signal based on this CP parameter.

[0166] Optionally, the related information of the first signal includes at least one of the following:

[0167] The frequency domain information of the first signal;

[0168] The time domain information of the first signal;

[0169] The type of signal included in the first signal;

[0170] The index of the first signal;

[0171] The indication information for determining the first signal.

[0172] Optionally, the frequency-domain information includes at least one of the following:

[0173] The synchronization grid where the first signal is located;

[0174] The frequency band where the first signal is located;

[0175] The sub-band where the first signal is located;

[0176] The carrier where the first signal is located;

[0177] The frequency band range where the first signal is located;

[0178] The relative frequency-domain position relationship between the first signal and the second signal;

[0179] The subcarrier spacing of the first signal.

[0180] Optionally, the time-domain information includes at least one of the following:

[0181] The time unit where the first signal is located;

[0182] The relative time-domain position relationship between the first signal and the second signal;

[0183] The relative time-domain position relationship between signals included in the first signal.

[0184] Optionally, the indication information includes at least one of the following:

[0185] Information about the first signal for the serving cell;

[0186] Information about the first signal for the neighboring cell;

[0187] Information about the first signal for the accessible cell;

[0188] Information for determining the first signal based on demand.

[0189] Optionally, the first signal includes at least one of the following:

[0190] A signal for synchronization;

[0191] A signal for measurement;

[0192] Broadcast signal;

[0193] Broadcast channel;

[0194] System message.

[0195] Optionally, the CP parameter includes the CP type or the CP length.

[0196] Optionally, the network-side device determines the cyclic prefix (CP) parameter according to the first information, including:

[0197] The network-side device determines the CP parameter corresponding to the first information based on the correspondence between the first information and the CP parameter.

[0198] Optionally, the first signal and the second signal are different-level signals for synchronization or measurement or acquisition of cell public information.

[0199] Optionally, the network-side device determines the cyclic prefix (CP) parameter according to the first information, including:

[0200] The network-side device determines the CP parameter of the first signal based on the CP parameter of the second signal and the relative frequency-domain position relationship or relative time-domain position relationship between the first signal and the second signal.

[0201] Optionally, the terminal type includes at least one of the following:

[0202] Whether it is a terminal supporting a non-terrestrial network;

[0203] Whether it is a terminal with reduced capabilities;

[0204] Whether it is a terminal supporting low power consumption.

[0205] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0206] Among the indexes of the multiple first signals, there is a specific interval threshold between adjacent indexes; or

[0207] The indexes of the multiple first signals are consecutive signal numbers; wherein, the signal numbers are sequentially sorted based on the order of time units.

[0208] It should be noted that this method is implemented in cooperation with the signal processing method executed by the above terminal. The implementation manners of the above method embodiments are applicable to this method and can achieve the same technical effects.

[0209] For the signal processing method provided in the embodiments of the present application, the execution subject may be a signal processing device. In the embodiments of the present application, taking the signal processing device executing the signal processing method as an example, the signal processing device provided in the embodiments of the present application is described.

[0210] As Figure 4 shown, a signal processing device 400 in the embodiments of the present application includes:

[0211] A first processing module 410, configured to determine a cyclic prefix (CP) parameter according to first information, where the first information includes terminal type or relevant information of a first signal;

[0212] A receiving module 420, configured to receive the first signal according to the determined cyclic prefix CP parameter;

[0213] Wherein, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

[0214] Optionally, the related information of the first signal includes at least one of the following:

[0215] The frequency domain information of the first signal;

[0216] The time domain information of the first signal;

[0217] The type of signal included in the first signal;

[0218] The index of the first signal;

[0219] The indication information for determining the first signal.

[0220] Optionally, the frequency domain information includes at least one of the following:

[0221] The synchronization raster where the first signal is located;

[0222] The frequency band where the first signal is located;

[0223] The sub-band where the first signal is located;

[0224] The carrier where the first signal is located;

[0225] The frequency band range where the first signal is located;

[0226] The relative frequency domain position relationship between the first signal and the second signal;

[0227] The sub-carrier spacing of the first signal.

[0228] Optionally, the time domain information includes at least one of the following:

[0229] The time unit where the first signal is located;

[0230] The relative time domain position relationship between the first signal and the second signal;

[0231] The relative time domain position relationship between the signals included in the first signal.

[0232] Optionally, the indication information includes at least one of the following:

[0233] The information of the first signal for the serving cell;

[0234] The information of the first signal for the neighboring cell;

[0235] Information of the first signal for an accessible cell;

[0236] Information for determining the first signal based on requirements.

[0237] Optionally, the first signal includes at least one of the following:

[0238] Signal for synchronization;

[0239] Signal for measurement;

[0240] Broadcast signal;

[0241] Broadcast channel;

[0242] System message.

[0243] Optionally, the CP parameter includes a CP type or a CP length.

[0244] Optionally, the first processing module is further configured to:

[0245] Determine the CP parameter corresponding to the first information based on the correspondence between the first information and the CP parameter.

[0246] Optionally, the first signal and the second signal are different-level signals for synchronization, measurement, or obtaining cell common information.

[0247] Optionally, the first processing module is further configured to:

[0248] Determine the CP parameter of the first signal based on the CP parameter of the second signal and the relative frequency-domain position relationship or relative time-domain position relationship between the first signal and the second signal.

[0249] Optionally, the terminal type includes at least one of the following:

[0250] Whether it is a terminal supporting a non-terrestrial network;

[0251] Whether it is a terminal with reduced capabilities;

[0252] Whether it is a terminal supporting low power consumption.

[0253] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0254] Among the indexes of the multiple first signals, there is a specific interval threshold between adjacent indexes; or

[0255] The indexes of the multiple first signals are consecutive signal numbers; where the signal numbers are sequentially sorted based on the order of time units.

[0256] The signal processing device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than terminals. Exemplarily, the terminal may include, but is not limited to, the types of terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0257] The signal processing device provided in the embodiments of the present application can implement Figure 2 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described here again.

[0258] As Figure 5 shown, a signal processing device 500 in the embodiments of the present application includes:

[0259] A second processing module 510, configured to determine cyclic prefix CP parameters according to first information, where the first information includes terminal type or related information of a first signal;

[0260] A sending module 520, configured to send the first signal according to the determined cyclic prefix CP parameters;

[0261] Wherein, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

[0262] Optionally, the related information of the first signal includes at least one of the following:

[0263] The frequency domain information of the first signal;

[0264] The time domain information of the first signal;

[0265] The type of signal included in the first signal;

[0266] The index of the first signal;

[0267] The indication information for determining the first signal.

[0268] Optionally, the frequency domain information includes at least one of the following:

[0269] The synchronization grid where the first signal is located;

[0270] The frequency band where the first signal is located;

[0271] The sub-band where the first signal is located;

[0272] The carrier where the first signal is located;

[0273] The frequency band range where the first signal is located;

[0274] The relative frequency domain position relationship between the first signal and the second signal;

[0275] The subcarrier spacing of the first signal.

[0276] Optionally, the time domain information includes at least one of the following:

[0277] The time unit where the first signal is located;

[0278] The relative time domain position relationship between the first signal and the second signal;

[0279] The relative time domain position relationship between the signals included in the first signal.

[0280] Optionally, the indication information includes at least one of the following:

[0281] Information about the first signal for the serving cell;

[0282] Information about the first signal for the neighboring cell;

[0283] Information about the first signal for the accessible cell;

[0284] Information for determining the first signal based on demand.

[0285] Optionally, the first signal includes at least one of the following:

[0286] A signal for synchronization;

[0287] A signal for measurement;

[0288] A broadcast signal;

[0289] A broadcast channel;

[0290] System information.

[0291] Optionally, the CP parameter includes a CP type or a CP length.

[0292] Optionally, the second processing module is further configured to:

[0293] Determine the CP parameter corresponding to the first information based on the correspondence between the first information and the CP parameter.

[0294] Optionally, the first signal and the second signal are different-level signals for synchronization or measurement or obtaining cell common information.

[0295] Optionally, the second processing module is further configured to:

[0296] Determine the CP parameter of the first signal based on the CP parameter of the second signal and the relative frequency domain position relationship or relative time domain position relationship between the first signal and the second signal.

[0297] Optionally, the terminal type includes at least one of the following:

[0298] Whether it is a terminal supporting non-terrestrial networks;

[0299] Whether it is a terminal with reduced capabilities;

[0300] Whether it is a terminal supporting low power consumption.

[0301] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0302] Among the indexes of the multiple first signals, there is a specific interval threshold between adjacent indexes; or

[0303] The indexes of the multiple first signals are consecutive signal numbers; where the signal numbers are generated in sequence based on the order of time units.

[0304] The signal processing device provided by the embodiments of the present application can implement Figure 3 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0305] As Figure 6 shown, the embodiments of the present application further provide a communication device 600, including a processor 601 and a memory 602. A program or instruction that can run on the processor 601 is stored on the memory 602. For example, when the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, it implements each step of the signal processing method embodiment executed by the terminal above and can achieve the same technical effects. When the communication device 600 is a network-side device, when the program or instruction is executed by the processor 601, it implements each step of the signal processing method embodiment executed by the network-side device above and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0306] The embodiments of the present application further provide a terminal, including a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement the steps in the method embodiments as Figure 2 shown. This terminal embodiment corresponds to the above terminal-side method embodiment. Each implementation process and implementation method of the above method embodiment can be applied to this terminal embodiment and can achieve the same technical effects. Specifically, Figure 7 is a schematic diagram of the hardware structure of a terminal for implementing the embodiments of the present application.

[0307] The terminal 700 includes, but is not limited to, at least some components such as a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.

[0308] Those skilled in the art can understand that the terminal 700 may further include a power source (such as a battery) for supplying power to each component. The power source can be logically connected to the processor 710 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 7 The terminal structure shown does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements, which will not be elaborated here.

[0309] It should be understood that in the embodiments of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The graphics processor 7041 processes the image data of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. The other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0310] In the embodiments of the present application, after the radio frequency unit 701 receives downlink data from a network-side device, it can be transmitted to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network-side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0311] The memory 709 can be used to store software programs or instructions as well as various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include volatile memory or non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 709 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0312] The processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 710 either.

[0313] Among them, the processor 710 is used to determine the cyclic prefix CP parameter according to the first information, and the first information includes the terminal type or the related information of the first signal;

[0314] The radio frequency unit 701 is used to receive the first signal according to the determined cyclic prefix CP parameter;

[0315] Among them, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

[0316] The terminal determines applicable CP parameters based on the first information, and thus receives the first signal based on the CP parameters. The first signal is sent by the network-side device after determining applicable CP parameters according to the first information. In this way, the used CP can provide a sufficient time length to resist inter-symbol interference caused by propagation delay and synchronization accuracy error, improving communication performance.

[0317] Optionally, the relevant information of the first signal includes at least one of the following:

[0318] The frequency-domain information of the first signal;

[0319] The time-domain information of the first signal;

[0320] The type of signal included in the first signal;

[0321] The index of the first signal;

[0322] The indication information for determining the first signal.

[0323] Optionally, the frequency-domain information includes at least one of the following:

[0324] The synchronization grid where the first signal is located;

[0325] The frequency band where the first signal is located;

[0326] The sub-band where the first signal is located;

[0327] The carrier where the first signal is located;

[0328] The frequency band range where the first signal is located;

[0329] The relative frequency-domain position relationship between the first signal and the second signal;

[0330] The subcarrier spacing of the first signal.

[0331] Optionally, the time-domain information includes at least one of the following:

[0332] The time unit where the first signal is located;

[0333] The relative time-domain position relationship between the first signal and the second signal;

[0334] The relative time-domain position relationship between the signals included in the first signal.

[0335] Optionally, the indication information includes at least one of the following:

[0336] The information of the first signal for the serving cell;

[0337] Information on the first signal for neighboring cells;

[0338] Information on the first signal for accessible cells;

[0339] Information for determining a first signal based on requirements.

[0340] Optionally, the first signal includes at least one of the following:

[0341] A signal for synchronization;

[0342] A signal for measurement;

[0343] A broadcast signal;

[0344] A broadcast channel;

[0345] System information.

[0346] Optionally, the CP parameter includes a CP type or a CP length.

[0347] Optionally, the processor is further configured to:

[0348] Determine a CP parameter corresponding to the first information based on the correspondence between the first information and the CP parameter.

[0349] Optionally, the first signal and the second signal are different-level signals for synchronization, measurement, or obtaining cell common information.

[0350] Optionally, the processor is further configured to:

[0351] Determine the CP parameter of the first signal based on the CP parameter of the second signal and the relative frequency-domain position relationship or relative time-domain position relationship between the first signal and the second signal.

[0352] Optionally, the terminal type includes at least one of the following:

[0353] Whether it is a terminal supporting a non-terrestrial network;

[0354] Whether it is a terminal with reduced capabilities;

[0355] Whether it is a terminal supporting low power consumption.

[0356] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0357] Among the indexes of the multiple first signals, there is a specific interval threshold between adjacent indexes; or

[0358] The indexes of the multiple first signals are consecutive signal numbers; where the signal numbers are sequentially sorted based on the order of time units.

[0359] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions in the embodiment of the terminal-side signal processing method, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0360] The embodiment of the present application further provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement as Figure 3 the steps shown in the method embodiment. This embodiment of the network-side device corresponds to the above-mentioned embodiment of the network-side device method. Each implementation process and implementation manner of the above method embodiment can be applied to this embodiment of the network-side device, and the same technical effects can be achieved.

[0361] Specifically, the embodiment of the present application further provides a network-side device. As Figure 8 shown, the network-side device 800 includes: an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84, and a memory 85. The antenna 81 is connected to the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82. After processing the received information, the radio frequency device 82 sends it out through the antenna 81.

[0362] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 83, and the baseband device 83 includes a baseband processor.

[0363] The baseband device 83 may include, for example, at least one baseband board, and multiple chips are provided on the baseband board. As Figure 8 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call the program in the memory 85 and execute the operations of the network device shown in the above method embodiments.

[0364] The network-side device may further include a network interface 86, and this interface is, for example, a Common Public Radio Interface (CPRI).

[0365] Specifically, the network-side device 800 in the embodiment of the present application further includes: instructions or programs stored on the memory 85 and executable on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute Figure 5 the methods executed by the respective modules shown, and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0366] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned signal processing method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0367] Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disc, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0368] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement each process of the above-mentioned signal processing method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0369] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system or system-on-chip.

[0370] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above-mentioned signal processing method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0371] The embodiments of the present application further provide a wireless communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the above-mentioned terminal-side signal processing method, and the network-side device can be used to execute the steps of the above-mentioned network-side signal processing method.

[0372] It should be noted that in this text, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising such element. In addition, it should be pointed out that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0373] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0374] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the spirit of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A signal processing method, characterized in that, Including: The terminal determines cyclic prefix (CP) parameters according to first information, where the first information includes terminal type or related information of a first signal; The terminal receives the first signal according to the determined cyclic prefix (CP) parameters; Wherein, the first signal includes a signal for synchronization or measurement or acquisition of cell public information.

2. The method according to claim 1, wherein The related information of the first signal includes at least one of the following: Frequency-domain information of the first signal; Time-domain information of the first signal; Type of the signal included in the first signal; Index of the first signal; Indication information for determining the first signal.

3. The method according to claim 2, wherein The frequency-domain information includes at least one of the following: Synchronization raster where the first signal is located; Frequency band where the first signal is located; Sub-band where the first signal is located; Carrier where the first signal is located; Frequency band range where the first signal is located; Relative frequency-domain position relationship between the first signal and a second signal; Sub-carrier spacing of the first signal.

4. The method according to claim 2 or 3, characterized in that, The time-domain information includes at least one of the following: Time unit where the first signal is located; Relative time-domain position relationship between the first signal and a second signal; Relative time-domain position relationship between signals included in the first signal.

5. The method according to any one of claims 2 to 4, characterized in that The indication information includes at least one of the following: Information of the first signal for a serving cell; Information of the first signal for a neighboring cell; Information of the first signal for an accessible cell; Information of the first signal for determining on-demand.

6. The method according to any one of claims 1 to 5, characterized in that, The first signal includes at least one of the following: Signal for synchronization; Signal for measurement; Broadcast signal; Broadcast channel; System message.

7. The method according to any one of claims 1 to 6, characterized in that, The CP parameters include CP type or CP length.

8. The method according to any one of claims 1 to 7, characterized in that The terminal determines cyclic prefix (CP) parameters according to the first information, including: The terminal determines the CP parameters corresponding to the first information based on the correspondence between the first information and the CP parameters.

9. The method according to claim 3 or 4, characterized in that, The first signal and the second signal are different-level signals for synchronization or measurement or acquisition of cell public information.

10. The method according to claim 9, wherein The terminal determines cyclic prefix (CP) parameters according to the first information, including: The terminal determines the CP parameters of the first signal based on the CP parameters of the second signal and the relative frequency-domain position relationship or relative time-domain position relationship between the first signal and the second signal.

11. The method according to any one of claims 1 to 10, characterized in that, The terminal type includes at least one of the following: Whether it is a terminal supporting a non-terrestrial network; Whether it is a terminal with reduced capabilities; Whether it is a terminal supporting low power consumption.

12. The method according to any one of claims 1 to 11, characterized in that, In the case where indexes of multiple first signals correspond to the same CP parameter, Among the indexes of the multiple first signals, there is a specific interval threshold between adjacent indexes; or The indexes of the multiple first signals are consecutive signal numbers; where the signal numbers are sequentially sorted based on the order of time units.

13. A signal processing method, characterized in that, Including: The network-side device determines cyclic prefix (CP) parameters according to first information, where the first information includes terminal type or related information of a first signal; The network-side device sends the first signal according to the determined cyclic prefix (CP) parameters; Wherein, the first signal includes a signal for synchronization or measurement or acquisition of cell public information.

14. The method according to claim 13, characterized in that, The relevant information of the first signal includes at least one of the following: The frequency domain information of the first signal; The time domain information of the first signal; The type of signal included in the first signal; The index of the first signal; The indication information used to determine the first signal.

15. The method according to claim 13 or 14, characterized in that, The CP parameter includes the CP type or the CP length.

16. The method according to any one of claims 13 to 15, characterized in that, The network side device determines the cyclic prefix CP parameter according to the first information, including: The network side device determines the CP parameter corresponding to the first information based on the corresponding relationship between the first information and the CP parameter.

17. The method according to any one of claims 13 to 16, characterized in that, The network side device determines the cyclic prefix CP parameter according to the first information, including: The network side device determines the CP parameter of the first signal based on the CP parameter of the second signal and the relative frequency domain position relationship or relative time domain position relationship between the first signal and the second signal.

18. A signal processing device, characterized in that, Including: The first processing module is used to determine the cyclic prefix CP parameter according to the first information, and the first information includes the terminal type or the relevant information of the first signal; The receiving module is used to receive the first signal according to the determined cyclic prefix CP parameter; Wherein, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

19. The device according to claim 18, characterized in that, The relevant information of the first signal includes at least one of the following: The frequency domain information of the first signal; The time domain information of the first signal; The type of signal included in the first signal; The index of the first signal; The indication information used to determine the first signal.

20. The device according to claim 18 or 19, characterized in that, The first processing module is further used to: Determine the CP parameter corresponding to the first information based on the corresponding relationship between the first information and the CP parameter.

21. The device according to any one of claims 18 to 20, characterized in that The first processing module is further used to: Determine the CP parameter of the first signal based on the CP parameter of the second signal and the relative frequency domain position relationship or relative time domain position relationship between the first signal and the second signal.

22. A signal processing device, characterized in that, Including: The second processing module is used to determine the cyclic prefix CP parameter according to the first information, and the first information includes the terminal type or the relevant information of the first signal; The sending module is used to send the first signal according to the determined cyclic prefix CP parameter; Wherein, the first signal includes a signal for synchronizing or measuring or acquiring cell public information.

23. The device according to claim 22, characterized in that, The second processing module is further used to: Determine the CP parameter corresponding to the first information based on the corresponding relationship between the first information and the CP parameter.

24. The device according to claim 22 or 23, characterized in that, The second processing module is further used to: Determine the CP parameter of the first signal based on the CP parameter of the second signal and the relative frequency domain position relationship or relative time domain position relationship between the first signal and the second signal.

25. A terminal, characterized in that, Including a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the signal processing method described in any one of claims 1 to 12 are implemented.

26. A network-side device, characterized in that, Including a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the signal processing method described in any one of claims 13 to 17 are implemented.

27. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, it implements the signal processing method according to any one of claims 1 to 12, or implements the steps of the signal processing method according to any one of claims 13 to 17.

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