Signal processing method and apparatus, and related device

Abstract

The present application relates to the technical field of communications, and discloses a signal processing method and apparatus, and a related device. The method in embodiments of the present application comprises: a terminal determines a cyclic prefix (CP) parameter on the basis of first information, the first information comprising a terminal type or related information of a first signal; and the terminal receives the first signal on the basis of the determined CP parameter, wherein the first signal comprises a signal for synchronizing or measuring or acquiring public cell information.

Description

Signal processing method, device and related equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202410073227.2 filed on January 17, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a signal processing method, apparatus and related equipment. Background Art

[0004] Currently, the synchronization signal block (SSB) of initial access uses the same type of cyclic prefix (CP) to reduce the complexity of UE initial access.

[0005] However, this approach is not applicable to certain communication scenarios, such as cells with longer propagation delays in non-terrestrial network (NTN) systems, larger subcarrier spacing (SCS) in frequency range (FR) 3, larger cells in cell-free networks, and terminals with relaxed time-frequency accuracy requirements. The CP used may not provide sufficient time length to resist inter-symbol interference caused by propagation delay and synchronization accuracy errors. Summary of the Invention

[0006] The embodiments of the present application provide a signal processing method, apparatus, and related equipment, which can solve the problem of communication performance degradation caused by inappropriate CP used.

[0007] In a first aspect, a signal processing method is provided, the method comprising:

[0008] The terminal determines a cyclic prefix (CP) parameter according to the first information, where the first information includes the terminal type or related information of the first signal;

[0009] The terminal receives the first signal according to the determined cyclic prefix (CP) parameter;

[0010] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0011] In a second aspect, a signal processing method is provided, comprising:

[0012] The network side device determines a cyclic prefix CP parameter according to the first information, where the first information includes relevant information of the terminal type or the first signal;

[0013] The network side device sends the first signal according to the determined cyclic prefix CP parameter;

[0014] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0015] In a third aspect, a signal processing device is provided, comprising:

[0016] A first processing module, configured to determine a cyclic prefix (CP) parameter according to first information, where the first information includes information related to a terminal type or a first signal;

[0017] A receiving module, configured to receive the first signal according to the determined cyclic prefix CP parameter;

[0018] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0019] In a fourth aspect, a signal processing device is provided, comprising:

[0020] A second processing module, configured to determine a cyclic prefix (CP) parameter according to first information, where the first information includes information related to a terminal type or a first signal;

[0021] A sending module, configured to send the first signal according to the determined cyclic prefix CP parameter;

[0022] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0023] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be 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.

[0024] According to a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to determine a cyclic prefix (CP) parameter based on first information, where the first information includes a terminal type or related information of a first signal; and the communication interface is configured to receive the first signal based on the determined cyclic prefix (CP) parameter.

[0025] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0026] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0027] In an eighth aspect, a network-side device is provided, including a processor and a communication interface, wherein the processor is configured to determine a cyclic prefix (CP) parameter based on first information, where the first information includes information related to a terminal type or a first signal; and the communication interface is configured to send the first signal based on the determined cyclic prefix (CP) parameter.

[0028] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0029] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is 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.

[0030] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0031] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0032] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the signal processing method as described in the first aspect, or to implement the steps of the signal processing method as described in the second aspect.

[0033] In an embodiment of the present application, the terminal determines the applicable CP parameters based on the first information, and thereby receives a first signal based on the CP parameters. The first signal is sent by the network side device after determining the applicable CP parameters based on the first information. In this way, the CP used can provide sufficient time length to resist inter-symbol interference caused by propagation delay and synchronization accuracy error, thereby improving communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG1 is a block diagram of a wireless communication system;

[0035] FIG2 is a schematic diagram of a method flow diagram of an embodiment of the present application;

[0036] FIG3 is a second schematic diagram of a method flow chart of an embodiment of the present application;

[0037] FIG4 is a schematic diagram of a module of an apparatus according to an embodiment of the present application;

[0038] FIG5 is a second schematic diagram of a module of the device according to an embodiment of the present application;

[0039] FIG6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

[0040] FIG7 is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0041] FIG8 is a schematic structural diagram of a network-side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0043] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, 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 generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0044] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the result of the request in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the result of the request based on the judgment result.

[0045] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but 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 the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0046] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (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 (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may 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 (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0047] For ease of understanding, some of the contents involved in the embodiments of this application are described below:

[0048] 1. Cell search and synchronization process in 5G NR technology:

[0049] In 5G NR technology, user equipment (UE) needs to obtain the access carrier frequency by searching for synchronization blocks (SS / PBCH blocks, SSBs) to achieve downlink synchronization. Because the NR spectrum range is very wide, to reduce search complexity, the UE performs SSB searches according to a certain frequency interval specified by the protocol. This frequency interval is called the synchronization raster. The UE detects the received power (SS-RSRP) of the synchronization signal at the corresponding frequency according to the synchronization raster and selects the appropriate SSB based on the threshold (rsrp-ThresholdSSB) configured by the network. Specifically, if an SSB with SS-RSRP signal quality exceeds the threshold, the SSB that meets the conditions is selected. If multiple SSBs meet the conditions, one of them is selected (the selection method is determined by the terminal implementation). If no SSB meets the conditions, an SSB is selected from the entire SSB set (the selection method is determined by the terminal implementation). The UE determines the RO resource set and preamble resource set associated with the SSB based on the association between the SSB and the RACH occasion (RO); the UE randomly selects an RO resource and a preamble resource in the resource set, sends Msg1, and initiates the random access process.

[0050] 2. Structure of the synchronization signal module SSB in 5G NR technology:

[0051] In order for the UE to search for a suitable cell and synchronize with the selected cell, the network usually needs to broadcast synchronization signals and provide certain key information about the cell. The UE obtains the required information through the SSB. The synchronization signal block (SSB) includes: Primary Synchronisation Signal (PSS), Secondary Synchronisation Signal (SSS), Physical Broadcast Channel (PBCH), and PBCH Demodulation Reference Signal (DMRS).

[0052] Among them, the main functions of PSS and SSS are to achieve symbol-level synchronization and complete the physical-layer cell identity (PCI) The PBCH contains the cell's master information block (MIB) and some other information. The PBCH-DMRS serves as the PBCH demodulation reference signal and contains some SSB-index information (the lower three bits).

[0053] 3. Cyclic Prefix

[0054] In an Orthogonal Frequency Division Multiplex (OFDM) system, an OFDM symbol typically consists of two parts: the cyclic prefix (CP) and the time-domain signal obtained after IFFT. The CP consists of the last Ncp samples of the second part.

[0055] Without CP, inter-symbol interference (ISI) may exist between two adjacent OFDM symbols. For example, due to multipath delay, the tail of the previous OFDM symbol overlaps with multiple sampling points at the beginning of the second OFDM symbol, or due to timing error, the FFT time window at the receiving end includes the last multiple sampling points of the previous OFDM symbol and some sampling points of the current OFDM symbol. Adding a cyclic prefix, and the length of the cyclic prefix is ​​not less than the total delay (for example, including the delay caused by transmission delay and timing error), can ensure that the FFT time window at the receiving end only includes the signal of the current OFDM symbol, without ISI. It is not difficult to see that the length of the CP is related to the channel environment. For example, in an environment with a small propagation delay, a shorter CP is sufficient to eliminate ISI, 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 because the CP part cannot carry additional information, the CP overhead will lead to reduced resource efficiency. That is, within an OFDM symbol, the longer the CP is and the higher its proportion is, the lower the transmission efficiency of this OFDM symbol.

[0056] The NR system can support different subcarrier spacings (SCS). For different SCSs, the ratio of the number of sampling points in the first part (CP) and the second part of the OFDM symbol is the same, thereby ensuring the same transmission efficiency. For example, for any SCS, for a specific OFDM symbol, the ratio of the number of sampling points in the first part NCP to the second part is 144:2048. If the first part is ECP, 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 the SCS, the time length of the CP part decreases as the SCS increases.

[0057] In NR systems, evaluation has shown that while the CP length decreases with increasing SCS, in FR1 scenarios, the NCP length is sufficient to reduce intersymbol interference when SCS = 15 kHz and 30 kHz. However, when SCS = 60 kHz, the NCP length is insufficient under certain channel conditions. Therefore, NCP and ECP are supported when SCS = 60 kHz. In FR2 and FR2-2 scenarios, due to the reduced coverage area, the use of analog beams significantly reduces multipath delay compared to FR1. Therefore, although the CP length decreases with increasing SCS, the NCP length remains sufficient.

[0058] Furthermore, for NR / LTE systems, the time and frequency domain offsets of the UE or base station caused by hardware must meet specific requirements. For example, the UE must meet carrier frequency offset (CFO) limits of no more than 0.1ppm, and the UE must regularly correct for this offset based on synchronization signals. Therefore, the length of the CP required to mitigate timing errors is essentially negligible.

[0059] In the NR system, when the base station configures a BWP, it also configures a unique SCS and a unique CP type (NCP or ECP) ​​for that BWP. During initial access, to reduce UE complexity, only some SCSs are supported, for example, not supporting the 60 kHz SCS. Therefore, during initial access, the UE does not need to blindly detect the CP type. The UE can simply search for the SSB based on the NCP.

[0060] In the LTE system, downlink transmission only supports one SCS = 15KHz, but it can support two CP types: NCP and ECP. When the UE detects the PSS / SSS during initial access, it needs to blindly detect the CP type.

[0061] The signal processing method, apparatus, and related equipment provided by the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0062] As shown in FIG2 , a signal processing method according to an embodiment of the present application includes:

[0063] Step 201: The terminal determines a cyclic prefix (CP) parameter based on first information, where the first information includes information related to the terminal type or a first signal.

[0064] Step 202: The terminal receives the first signal according to the determined cyclic prefix (CP) parameter.

[0065] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0066] In this way, according to the above steps, the terminal will determine the applicable CP parameters based on the first information, and thus receive the first signal based on the CP parameters. The first signal is sent by the network side device after determining the applicable CP parameters based on the first information. In this way, the CP used can provide sufficient time length to resist the inter-symbol interference caused by propagation delay and synchronization accuracy error, thereby improving communication performance.

[0067] Optionally, in this embodiment, the terminal type includes at least one of the following:

[0068] Whether it is a terminal that supports non-terrestrial networks;

[0069] Whether it is a terminal with reduced capabilities;

[0070] Whether the terminal supports low power consumption.

[0071] Here, terminals that support non-terrestrial networks are called NTN terminals; terminals that do not support non-terrestrial networks are called non-NTN terminals; terminals with reduced capabilities are called Redcap terminals; terminals that support low power consumption can be AIOT or LP-WUR terminals; terminals that are not reduced-capability or low-power are called ordinary terminals. Therefore, the terminal type can include at least one of NTN or non-NTN terminals, Redcap or ordinary terminals, and low-power terminals or ordinary-power terminals.

[0072] Optionally, the first signal includes at least one of the following:

[0073] Signals used for synchronization;

[0074] The signal used for measurement;

[0075] broadcast signals;

[0076] Broadcast channel;

[0077] System message.

[0078] The signal used for synchronization may include only PSS or SSS; the signal used for synchronization includes PSS, SSS and PBCH. Of course, the signal used for synchronization is a sequence or a loaded physical channel.

[0079] Optionally, the CP parameter includes a CP type or a CP length.

[0080] The CP type can be either NCP or ECP. The CP parameter uniquely determines the CP length. For example, the CP length of an SCS can be determined based on the SCS and ECP or NCP. For another example, the NCP of a given SCS can have multiple lengths to suit different scenarios. These multiple CP lengths can be numbered, and the CP parameter is used to determine the number, thereby uniquely determining the CP length.

[0081] Optionally, in this embodiment, the relevant information of the first signal includes at least one of the following:

[0082] frequency domain information of the first signal;

[0083] time domain information of the first signal;

[0084] the type of signal included in the first signal;

[0085] an index of the first signal;

[0086] Used to determine indication information of the first signal.

[0087] Optionally, the frequency domain information includes at least one of the following:

[0088] A synchronization grid (Sync Raster) where the first signal is located;

[0089] The frequency band (Band) in which the first signal is located;

[0090] a subband in which the first signal is located;

[0091] a carrier on which the first signal resides;

[0092] a frequency range (FR) of the first signal;

[0093] a relative frequency domain position relationship between the first signal and the second signal;

[0094] The subcarrier spacing SCS of the first signal.

[0095] If the frequency domain information includes the Sync Raster where the first signal is located, the standard may predefine one or a group of CP parameters corresponding to the Sync Raster, and the terminal may determine the CP parameters according to the Sync Raster.

[0096] Among them, if the frequency domain information includes the Band or subband or carrier or FR where the first signal is located, the standard can predefine 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.

[0097] The second signal may be the same as the first signal, and may be a signal used for synchronization, measurement, or acquisition of cell public information, or may 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 in the same frequency domain unit (subband, carrier, frequency band, or 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.

[0098] If the frequency domain information includes the SCS of the first signal, the standard may predefine one or a group of CP parameters corresponding to the SCS, and the terminal may determine the CP parameters based on the SCS. The first signal and the second signal with the same SCS may be defined as corresponding to the same CP parameter or different CP parameters.

[0099] Optionally, the time domain information includes at least one of the following:

[0100] The time unit where the first signal is located;

[0101] a relative time domain position relationship between the first signal and the second signal;

[0102] The first signal includes a relative time domain position relationship between the signals.

[0103] The time unit includes, but is not limited to, an OFDM symbol, a time slot, a subframe, a half-frame, a frame, and a superframe. If the time domain information includes the time unit in which the first signal is located, the standard may predefine a CP parameter corresponding to one or a group of time units, and the terminal may determine the CP parameter based on the time unit. The time unit may be represented by a time unit index, which may be the number of an OFDM symbol, time slot, subframe, half-frame, frame, or superframe.

[0104] The second signal may be the same as the first signal and may be a signal used for synchronization, measurement, or acquisition of cell public information, or may be another signal. 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 in the same time unit; and whether the time domain displacement between the first signal and the second signal is less than a specific threshold.

[0105] The first signal may include multiple signals, and 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 by whether the time domain displacement between PSS and SSS is less than a specific threshold, wherein the CP parameter of PSS is known. For another example, if the first signal includes SS and PBCH, the terminal can determine the CP parameter of PBCH in the first signal by whether the time domain displacement between SS and PBCH is less than a specific threshold, wherein the CP parameter of SS is known.

[0106] If the relevant information of the first signal includes the type of signal contained in the first signal, the standard may predefine the CP parameter corresponding to the signal type, and the terminal may determine the CP parameter based on the type of signal contained in the first signal. For example, the network configuration or protocol stipulates that the PSS in the first signal uses a first CP parameter (such as normal CP), and the other parts (SSS / PBCH and its DMRS) use a second CP parameter (such as normal CP or extended CP).

[0107] Among them, the network side device can 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 predefines the value of the index of the first signal of a given CP length to belong to a specific set, or the standard predefines the value of the index of the first signal of different CP lengths to satisfy a predefined 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), in order to achieve relatively balanced delay, the first signals of NCP and ECP are intertwined in the time domain. That is, the first signal index of the first CP type is i, i+2,...; the first signal index of the second CP type is i+1, i+3,... The time domain resources of different synchronization signals are arranged in ascending order according to the index.

[0108] Alternatively, in order to shorten the delay of each first signal of the same type of CP, within one cycle, after all first signals of one CP type are completed, the synchronization signal of another 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 CP types, after the N first signals of one CP type (such as in the nth time unit, the time unit is the SSB period) are sequentially numbered, the N first signals of the other CP type (such as in the n+1th time unit, the time unit is the SSB period) are sequentially numbered. Then, the first signal index of the first CP type is i, i+1,…i+N-1, and the first signal index of the second CP type is i+N, i+N+1,…,i+2N-1.

[0109] Of course, the standard may predefine different implementations for different frequency bands (e.g., different bands or subbands or carriers or FRs or different sync rasters), different deployment methods, and cell types. Alternatively, the standard may predefine a single implementation that is applicable to various scenarios. According to another example, the network may configure one of the two implementations described above.

[0110] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0111] Among the indexes of the plurality of first signals, adjacent indexes have a specific interval threshold; or

[0112] The indexes of the plurality of first signals are consecutive signal numbers; wherein the signal numbers are generated by sequentially sorting based on the order of time units.

[0113] Thus, when first signals corresponding to different CP parameters are interleaved and numbered, the indices of multiple first signals corresponding to the same CP parameter have a specific interval threshold between adjacent indices. The specific interval threshold is determined based on the number of CP parameters. For example, the specific interval threshold of two CP parameters is 2. When first signals corresponding to the same CP parameter are sequentially numbered, the indices of multiple first signals corresponding to the same CP parameter are continuous.

[0114] Optionally, the second signal includes at least one of the following:

[0115] Signals used for synchronization;

[0116] The signal used for measurement;

[0117] broadcast signals;

[0118] Broadcast channel;

[0119] System message.

[0120] Optionally, the indication information includes at least one of the following:

[0121] Information of a first signal for a serving cell;

[0122] Information about the first signal of a neighboring cell;

[0123] Information of a first signal for an accessible cell;

[0124] Information for determining a first demand-based signal.

[0125] Among them, the information of the first signal used for the serving cell may be the secondary cell (Scell) information configured on the network side, and the Scell ​​information may include the CP parameters of the first signal of the Scell; it may be the information of the Y-th level first signal indicating the X-th level first signal (Y is less than X), wherein the information includes the CP parameters of the X-th level first signal; it may be the information of the PSS or SSS indicating the PBCH, wherein the information includes the CP parameters of the PBCH.

[0126] The information of the first signal for the neighboring cell may be the neighboring cell measurement information configured on the network side, or the neighboring cell switching information, or the activation signal information of the neighboring cell's demand-based synchronization signal (e.g., on demand SSB), wherein the information includes the CP parameter of the synchronization signal.

[0127] The information of the first signal for the accessible cell is obtained when the terminal has not yet accessed any cell. The first signal may be a PBCH of a non-cell defining (CD) SSB, and the information may be information indicated by the PBCH, where the PBCH indicates a CP parameter of the CD-SSB.

[0128] The information used to determine the demand-based first signal may be information of an activation signal of an on-demand SSB.

[0129] Thus, 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 based on the configuration information on the network side:

[0130] 1) In one implementation, if the cell is an Scell, the network side may configure the Scell ​​for the terminal, and the information configuring the Scell ​​(such as Scell ​​information) may include a CP parameter for the first signal of the Scell. Optionally, the network side may configure multiple CP parameters for a Scell, and the network side may indicate a CP parameter in the signaling for activating the Scell. Optionally, the network side may configure a CP parameter applicable to multiple first signals of the Scell, or the network side may configure a CP parameter for each first signal separately. For example, in some deployment scenarios, different SSB indexes support different CP lengths, then the network side may configure the CP length of each SSB separately, or the network side may configure the CP length of each group of SSBs.

[0131] 2) In one implementation, the current serving cell may provide the terminal with information about multiple neighboring cells, such as measurement information of neighboring cells used for cell selection / reselection, which may include CP parameters for the first signals of the neighboring cells. The network may configure a single CP parameter that applies to multiple first signals of one or a group of neighboring cells, or the network may configure a separate CP parameter for each first signal.

[0132] 3) In one implementation, the current serving cell may provide the terminal with configuration information of the demand-based first signal (e.g., on-demand SSB) of the current cell or another cell (e.g., Scell ​​or neighboring cell), such as information of a wake-up signal (WUS) used by the terminal to request an on-demand SSB, which may include CP parameters for the first signal of the cell. Optionally, the terminal may report a preferred CP when requesting an on-demand SSB. For example, the terminal may report the CP type in the cell of the on-demand SSB preferred by the terminal to the current serving cell, or the terminal may report the preferred CP type to the cell of the on-demand SSB. For example, the wake-up signal sent by the terminal may explicitly or implicitly indicate the preferred CP parameters. Optionally, after receiving the wake-up signal sent by the terminal, the network side may send a downlink signal to configure the CP parameters or confirm the CP preference reported by the terminal. For example, the downlink signal is a confirmation signal used to respond to the wake-up signal sent by the terminal, which may carry CP information or confirmation information of the CP preference reported by the terminal.

[0133] 4) In one implementation, the current serving cell may provide the terminal with the CP parameters of the first signal of the current serving cell. If the network needs to update the CP parameters of the first signal of the serving cell, the network may notify the terminal before changing the CP of the first signal. For example, the network may carry the CP parameters of the first signal via system information, paging information, or user-specific signaling. The terminal may determine the CP length of the first signal based on this information.

[0134] Optionally, the terminal determining, according to the first information, a cyclic prefix (CP) parameter, including:

[0135] The terminal determines the CP parameter corresponding to the first information based on the correspondence between the first information and the CP parameter.

[0136] According to one implementation method, the standard may predefine the correspondence between Sync Raster and CP parameters. When the terminal attempts to receive the first signal according to the Sync Raster, it may attempt to receive the first signal according to the CP parameters corresponding to the Sync Raster. In this way, the number of blind detections of the synchronization signal by the terminal during the initial access process can be reduced, thereby reducing the complexity of the terminal. In one example, a Sync Raster uniquely corresponds to one CP parameter, such as NCP or ECP. In another example, a Sync Raster corresponds to one or more CP parameters, and the terminal may determine a set of CP parameters according to the Sync Raster, and determine a unique CP parameter based on blind detection or other rules.

[0137] According to one implementation, the standard may predefine the correspondence between bands, subbands, carriers, or frame rates and CP parameters. When a terminal attempts to receive a first signal in a given band, subband, carrier, or frame rate, it may attempt to receive the first signal based on the CP parameters corresponding to the band, subband, carrier, or frame rate. This approach reduces the number of blind detections of the first signal performed by the terminal during initial access, thereby reducing terminal complexity.

[0138] According to one implementation, the standard may predefine the correspondence between the SCS and the CP parameters. Therefore, the terminal can determine the CP parameters based on the SCS. Specifically, the first signal (e.g., a signal used for synchronization) and the second signal (e.g., a signal not used for synchronization) of the same SCS can be defined as corresponding to the same CP parameter, or to different CP parameters. For example, for a given SCS, to reduce the complexity of the terminal detecting the first signal, the standard predefines a CP parameter. The terminal can uniquely determine the CP parameter based on the SCS of the first signal. However, for other signals, to provide flexibility, the standard may predefine multiple CP parameters. The terminal can determine the CP parameters of other signals based on network instructions or other means.

[0139] According to one implementation, the standard may predefine different time resource patterns for first signals with different CP lengths. The terminal may determine the CP length of the first signal based on the time unit in which the first signal is located. In one example, the time unit indexes 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 subframe, a frame, and a superframe. For example, the first signal of the ECP is located in time slot set i, and the first signal of the 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 the Scell) as time slot set i, the terminal may determine the CP type of the configured first signal. In this way, the terminal can uniquely determine the CP parameters while saving the overhead of configuring the CP type.

[0140] According to one implementation, the standard may predefine a correspondence between a specific type of signal included in the first signal at a time domain location and a CP parameter, and the terminal may determine the CP parameter of the corresponding portion of the first signal based on the correspondence.

[0141] According to one implementation, the standard may predefine a correspondence between the index of the first signal and the CP parameter. The terminal may attempt to receive the first signal based on this correspondence. For example, if the CP parameter is terminal-type-dependent and the NTN terminal only attempts to receive the first signal of the ECP, the NTN terminal may determine the time interval between each first signal of the ECP (determining the time interval of the synchronization signal based on the index of the synchronization signal), and then determine the CP parameter, and use the determined CP parameter to receive the first signal.

[0142] In addition, in this embodiment, optionally, the first signal and the second signal are signals of different levels used for synchronization or measurement or acquisition of cell public information.

[0143] For example, the first signal and the second signal are both signals used for synchronization, the first signal is a level X signal, and the second signal is a level Y signal. Y can be smaller than X. Therefore, the relative frequency domain position relationship between the first signal and the second signal is the relative frequency domain position relationship between the level X signal and the level Y signal; and the relative time domain position relationship between the first signal and the second signal is the relative time domain position relationship between the level X signal and the level Y signal.

[0144] Optionally, the terminal determining, according to the first information, a cyclic prefix (CP) parameter, including:

[0145] The terminal determines the CP parameter of the first signal based on the CP parameter of the second signal and a relative frequency domain position relationship or a relative time domain position relationship between the first signal and the second signal.

[0146] 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.

[0147] In one implementation, 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. 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.

[0148] 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 between the signals at each level. 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.

[0149] In one example, the first signal is a non-cell customized synchronization signal (such as NCD-SSB). Usually, the terminal cannot access a cell based on NCD-SSB alone. For example, NCD-SSB does not indicate control channel information for receiving system information, such as SIB1, so the terminal cannot access this cell. The non-cell customized synchronization signal may indicate a second signal, such as information of a cell customized synchronization signal (such as CD-SSB). Usually, the terminal can access a cell based on CD-SSB. For example, CD-SSB indicates control channel information for receiving system information, such as SIB1, and 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 CD-SSB and NCD-SSB.

[0150] Of course, if the first signal contains multiple different signals or channels, the terminal can determine the CP parameters of other signals in the first signal based on the known CP parameters of a signal in the first signal and its relative frequency domain position relationship or relative time domain position relationship with other signals in the first signal.

[0151] In one example, if the first signal includes at least two different signals / channels, such as SS and PBCH, the terminal may determine the CP parameters based on the frequency domain position relationship of each signal / channel of the first signal. For example, the terminal determines the CP parameters of the SS in the first signal based on blind detection or predefined rules, such as determining the CP parameters of the SS based on Band. Then, the CP parameters of the first signal PBCH may be determined based on the relative frequency domain position relationship between PBCH and SS. For example, the terminal determines the CP parameters of the first signal PSS based on blind detection or predefined rules, such as determining the CP parameters of the PSS based on Band. Then, the CP parameters of the first signals SSS and PBCH may be determined based on the relative frequency domain position relationship between SSS / PBCH and PSS. Of course, in this example, SS may be regarded as the second signal and PBCH as the first signal; PSS may be regarded as the second signal and SSS / PBCH as the first signal.

[0152] According to one implementation, the standard may predefine the CP parameters corresponding to the first signal that satisfies a specific time domain position relationship. The terminal may determine the CP parameters of the first signal based on the relative time domain relationship between the first signal and the second signal. For example, if the terminal detects the second signal, and the second signal displays or implicitly indicates the time domain information of the first signal, the terminal may determine the CP information of the first signal based on the time domain position relationship between the first signal and the second signal. This approach can at least reduce the complexity of the terminal detecting the first signal.

[0153] In one example, if the first signal and the second signal are signals of the same type at different levels, the terminal may determine the CP parameter of the first signal based on the time domain position relationship between the signals at each level. For example, the terminal determines the CP parameter of the second signal, such as the first-level SSB, based on blind detection or predefined rules. The CP parameter of the first signal, such as the second-level SSB, may be determined based on 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 SSB is less than or equal to a predefined threshold, the CP parameters of the two-level SSB are the same; otherwise, the CP parameters of the two-level SSB may be different. For another example, the standard predefines a set of time intervals Ti for two-level SSBs and defines the CP parameters corresponding to each time interval Ti (optionally, the CP parameters are related not only to Ti but also to the CP parameters of the first-level SSB). The terminal may determine the CP parameter of the second-level SSB based on the time domain interval Ti of the second-level SSB, which is indicated explicitly or implicitly by the first-level SSB. Alternatively, the terminal may detect the second-level SSB by blindly detecting multiple Ti based on a given CP parameter.

[0154] 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 parameters based on the time domain position relationship between the various signals or channels of the first signal. For example, the terminal determines the CP parameters of the SS in the first signal based on blind detection or predefined rules, then the CP parameters of the PBCH in the first signal can be determined based on the relative time domain position relationship between the PBCH and the SS. The SS can explicitly or implicitly indicate the time displacement of the PBCH relative to the SS, and the terminal can determine the CP parameters of the second synchronization signal based on the indicated time displacement. Alternatively, the terminal can blindly detect multiple Ti, and each Ti can detect the second synchronization signal based on a given CP parameter. Of course, in this example, the SS can also be regarded as the second signal and the PBCH as the first signal; the PSS can be regarded as the second signal and the SSS / PBCH as the first signal.

[0155] In one example, the first signal is a non-cell-defined synchronization signal (e.g., NCD-SSB), and the non-cell-defined synchronization signal may indicate information of the second signal. For example, the NCD-SSB indicates the time and frequency domain position information of a cell-defined synchronization signal CD-SSB. Then, the CP parameter of the first signal NCD-SSB may be determined based on the relative time domain position relationship between CD-SSB and NCD-SSB, or based on the time unit index where the NCD-SSB is located.

[0156] 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. 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.

[0157] 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 PSS, the first signal includes at least SSS, or the second signal is PSS / SSS, and the first signal is system information (such as PBCH or SIB). According to another implementation, the second signal is NCD-SSB, and the first signal is CD-SSB.

[0158] 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 predefined by a standard (referenced by the time domain position of the second signal), and the time domain information is presented in the form of a table, and each row in the table provides a kind of time domain information and the CP parameter.

[0159] 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 is similar to the above determination of the CP parameter of the first signal and will not be elaborated here.

[0160] In addition, in the embodiments of the present application, the terminal may determine the CP parameter of the first signal of a cell according to one 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 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 such as the CP parameter of the first signal 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.

[0161] It should be noted that in this embodiment, a terminal may attempt to receive only one CP type of first signal, or a terminal may attempt to receive multiple CP types of first signals. For example, in a cell, the network side sends multiple SSBs, some of which use ECP for larger coverage areas, and some use NCP for smaller coverage areas. The terminal may attempt to receive both ECP SSBs and NCP SSBs and select the best SSB.

[0162] In summary, the method of the embodiment of the present application can support multiple CP types of signals compared to the single CP type of the signal for initial access to support the needs of various deployment scenarios and terminal types. At the same time, through predefined rules and / or signaling configuration, it can assist the terminal in determining the CP type of the signal, thereby reducing the complexity of the terminal's initial access.

[0163] As shown in FIG3 , a signal processing method according to an embodiment of the present application includes:

[0164] Step 301: A network-side device determines a cyclic prefix (CP) parameter based on first information, where the first information includes information related to a terminal type or a first signal.

[0165] Step 302: The network-side device sends the first signal according to the determined cyclic prefix (CP) parameter.

[0166] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0167] In this manner, according to steps 301 and 302, the network-side device determines an applicable CP parameter based on the first information and transmits the first signal based on the CP parameter. In this manner, the used CP provides sufficient time to mitigate inter-symbol interference caused by propagation delay and synchronization accuracy errors, thereby improving communication performance. Furthermore, the terminal also determines an applicable CP parameter based on the first information and receives the first signal based on the CP parameter.

[0168] Optionally, the relevant information of the first signal includes at least one of the following:

[0169] frequency domain information of the first signal;

[0170] time domain information of the first signal;

[0171] the type of signal included in the first signal;

[0172] an index of the first signal;

[0173] Used to determine indication information of the first signal.

[0174] Optionally, the frequency domain information includes at least one of the following:

[0175] a synchronization grid where the first signal is located;

[0176] The frequency band of the first signal;

[0177] the sub-band where the first signal is located;

[0178] The carrier of the first signal;

[0179] The frequency band range of the first signal;

[0180] a relative frequency domain position relationship between the first signal and the second signal;

[0181] The subcarrier spacing of the first signal.

[0182] Optionally, the time domain information includes at least one of the following:

[0183] The time unit where the first signal is located;

[0184] a relative time domain position relationship between the first signal and the second signal;

[0185] The first signal includes a relative time domain position relationship between the signals.

[0186] Optionally, the indication information includes at least one of the following:

[0187] Information of a first signal for a serving cell;

[0188] Information about the first signal of a neighboring cell;

[0189] Information of a first signal for an accessible cell;

[0190] Information for determining a first demand-based signal.

[0191] Optionally, the first signal includes at least one of the following:

[0192] Signals used for synchronization;

[0193] The signal used for measurement;

[0194] broadcast signals;

[0195] Broadcast channel;

[0196] System message.

[0197] Optionally, the CP parameter includes a CP type or a CP length.

[0198] Optionally, the network-side device determines a cyclic prefix (CP) parameter according to the first information, including:

[0199] 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.

[0200] Optionally, the first signal and the second signal are signals of different levels used for synchronization or measurement or acquisition of cell public information.

[0201] Optionally, the network-side device determines a cyclic prefix (CP) parameter according to the first information, including:

[0202] 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.

[0203] Optionally, the terminal type includes at least one of the following:

[0204] Whether it is a terminal that supports non-terrestrial networks;

[0205] Whether it is a terminal with reduced capabilities;

[0206] Whether the terminal supports low power consumption.

[0207] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0208] Among the indexes of the plurality of first signals, adjacent indexes have a specific interval threshold; or

[0209] The indexes of the plurality of first signals are consecutive signal numbers; wherein the signal numbers are generated by sequentially sorting based on the order of time units.

[0210] It should be noted that this method is implemented in conjunction with the signal processing method executed by the above-mentioned terminal. The implementation method of the above-mentioned method embodiment is applicable to this method and can also achieve the same technical effect.

[0211] The signal processing method provided in the embodiment of the present application can be executed by a signal processing device. In the embodiment of the present application, the signal processing device provided in the embodiment of the present application is described by taking the signal processing device executing the signal processing method as an example.

[0212] As shown in FIG4 , a signal processing device 400 according to an embodiment of the present application includes:

[0213] A first processing module 410 is configured to determine a cyclic prefix (CP) parameter based on first information, where the first information includes information related to a terminal type or a first signal;

[0214] A receiving module 420 is configured to receive the first signal according to the determined cyclic prefix (CP) parameter;

[0215] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0216] Optionally, the relevant information of the first signal includes at least one of the following:

[0217] frequency domain information of the first signal;

[0218] time domain information of the first signal;

[0219] the type of signal included in the first signal;

[0220] an index of the first signal;

[0221] Used to determine indication information of the first signal.

[0222] Optionally, the frequency domain information includes at least one of the following:

[0223] a synchronization grid where the first signal is located;

[0224] The frequency band of the first signal;

[0225] the sub-band where the first signal is located;

[0226] The carrier of the first signal;

[0227] The frequency band range of the first signal;

[0228] a relative frequency domain position relationship between the first signal and the second signal;

[0229] The subcarrier spacing of the first signal.

[0230] Optionally, the time domain information includes at least one of the following:

[0231] The time unit where the first signal is located;

[0232] a relative time domain position relationship between the first signal and the second signal;

[0233] The first signal includes a relative time domain position relationship between the signals.

[0234] Optionally, the indication information includes at least one of the following:

[0235] Information of a first signal for a serving cell;

[0236] Information about the first signal of a neighboring cell;

[0237] Information of a first signal for an accessible cell;

[0238] Information for determining a first demand-based signal.

[0239] Optionally, the first signal includes at least one of the following:

[0240] Signals used for synchronization;

[0241] The signal used for measurement;

[0242] broadcast signals;

[0243] Broadcast channel;

[0244] System message.

[0245] Optionally, the CP parameter includes a CP type or a CP length.

[0246] Optionally, the first processing module is further configured to:

[0247] Based on the correspondence between the first information and the CP parameter, the CP parameter corresponding to the first information is determined.

[0248] Optionally, the first signal and the second signal are signals of different levels used for synchronization or measurement or acquisition of cell public information.

[0249] Optionally, the first processing module is further configured to:

[0250] The CP parameter of the first signal is determined based on the CP parameter of the second signal and the relative frequency domain position relationship or the relative time domain position relationship between the first signal and the second signal.

[0251] Optionally, the terminal type includes at least one of the following:

[0252] Whether it is a terminal that supports non-terrestrial networks;

[0253] Whether it is a terminal with reduced capabilities;

[0254] Whether the terminal supports low power consumption.

[0255] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0256] Among the indexes of the plurality of first signals, adjacent indexes have a specific interval threshold; or

[0257] The indexes of the plurality of first signals are consecutive signal numbers; wherein the signal numbers are generated by sequentially sorting based on the order of time units.

[0258] The signal processing device in the embodiments of the present application can 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 chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0259] The signal processing device provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 2 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0260] As shown in FIG5 , a signal processing device 500 according to an embodiment of the present application includes:

[0261] A second processing module 510 is configured to determine a cyclic prefix (CP) parameter based on first information, where the first information includes information related to a terminal type or a first signal;

[0262] A sending module 520 is configured to send the first signal according to the determined cyclic prefix CP parameter;

[0263] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0264] Optionally, the relevant information of the first signal includes at least one of the following:

[0265] frequency domain information of the first signal;

[0266] time domain information of the first signal;

[0267] the type of signal included in the first signal;

[0268] an index of the first signal;

[0269] Used to determine indication information of the first signal.

[0270] Optionally, the frequency domain information includes at least one of the following:

[0271] a synchronization grid where the first signal is located;

[0272] The frequency band of the first signal;

[0273] the sub-band where the first signal is located;

[0274] The carrier of the first signal;

[0275] The frequency band range of the first signal;

[0276] a relative frequency domain position relationship between the first signal and the second signal;

[0277] The subcarrier spacing of the first signal.

[0278] Optionally, the time domain information includes at least one of the following:

[0279] The time unit where the first signal is located;

[0280] a relative time domain position relationship between the first signal and the second signal;

[0281] The first signal includes a relative time domain position relationship between the signals.

[0282] Optionally, the indication information includes at least one of the following:

[0283] Information of a first signal for a serving cell;

[0284] Information about the first signal of a neighboring cell;

[0285] Information of a first signal for an accessible cell;

[0286] Information for determining a first demand-based signal.

[0287] Optionally, the first signal includes at least one of the following:

[0288] Signals used for synchronization;

[0289] The signal used for measurement;

[0290] broadcast signals;

[0291] Broadcast channel;

[0292] System message.

[0293] Optionally, the CP parameter includes a CP type or a CP length.

[0294] Optionally, the second processing module is further configured to:

[0295] Based on the correspondence between the first information and the CP parameter, the CP parameter corresponding to the first information is determined.

[0296] Optionally, the first signal and the second signal are signals of different levels used for synchronization or measurement or acquisition of cell public information.

[0297] Optionally, the second processing module is further configured to:

[0298] The CP parameter of the first signal is determined based on the CP parameter of the second signal and the relative frequency domain position relationship or the relative time domain position relationship between the first signal and the second signal.

[0299] Optionally, the terminal type includes at least one of the following:

[0300] Whether it is a terminal that supports non-terrestrial networks;

[0301] Whether it is a terminal with reduced capabilities;

[0302] Whether the terminal supports low power consumption.

[0303] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0304] Among the indexes of the plurality of first signals, adjacent indexes have a specific interval threshold; or

[0305] The indexes of the plurality of first signals are consecutive signal numbers; wherein the signal numbers are generated by sequentially sorting based on the order of time units.

[0306] The signal processing device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 3 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0307] As shown in Figure 6, an embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602. The memory 602 stores a program or instruction that can be run on the processor 601. For example, when the communication device 600 is a terminal, the program or instruction, when executed by the processor 601, implements the various steps of the above-mentioned signal processing method embodiment performed by the terminal, and can achieve the same technical effect. When the communication device 600 is a network-side device, the program or instruction, when executed by the processor 601, implements the various steps of the above-mentioned signal processing method embodiment performed by the network-side device, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0308] The present application also provides a terminal comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG2 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this terminal embodiment and can achieve the same technical effects. Specifically, FIG7 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0309] The terminal 700 includes but is not limited to: 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 at least some of the components of the processor 710.

[0310] Those skilled in the art will appreciate that the terminal 700 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 710 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG7 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0311] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of a static picture or video 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 a touch panel 7071 and at least one of 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. 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 an operating stick, which will not be repeated here.

[0312] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 701 may transmit the data to the processor 710 for processing. Furthermore, the RF unit 701 may send uplink data to the network-side device. Typically, the RF unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0313] The memory 709 can be used to store software programs or instructions and 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, wherein the first storage area may store an operating system, applications 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 a volatile memory or a 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 (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0314] Processor 710 may include one or more processing units. Optionally, processor 710 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0315] The processor 710 is configured to determine a cyclic prefix (CP) parameter according to first information, where the first information includes information related to a terminal type or a first signal;

[0316] The radio frequency unit 701 is configured to receive the first signal according to the determined cyclic prefix CP parameter;

[0317] The first signal includes a signal used for synchronization, measurement, or acquisition of cell public information.

[0318] The terminal determines the applicable CP parameters based on the first information, and 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 based on the first information. In this way, the CP used can provide sufficient time length to resist inter-symbol interference caused by propagation delay and synchronization accuracy error, thereby improving communication performance.

[0319] Optionally, the relevant information of the first signal includes at least one of the following:

[0320] frequency domain information of the first signal;

[0321] time domain information of the first signal;

[0322] the type of signal included in the first signal;

[0323] an index of the first signal;

[0324] Used to determine indication information of the first signal.

[0325] Optionally, the frequency domain information includes at least one of the following:

[0326] a synchronization grid where the first signal is located;

[0327] The frequency band of the first signal;

[0328] the sub-band where the first signal is located;

[0329] The carrier of the first signal;

[0330] The frequency band range of the first signal;

[0331] a relative frequency domain position relationship between the first signal and the second signal;

[0332] The subcarrier spacing of the first signal.

[0333] Optionally, the time domain information includes at least one of the following:

[0334] The time unit where the first signal is located;

[0335] a relative time domain position relationship between the first signal and the second signal;

[0336] The first signal includes a relative time domain position relationship between the signals.

[0337] Optionally, the indication information includes at least one of the following:

[0338] Information of a first signal for a serving cell;

[0339] Information about the first signal of a neighboring cell;

[0340] Information of a first signal for an accessible cell;

[0341] Information for determining a first demand-based signal.

[0342] Optionally, the first signal includes at least one of the following:

[0343] Signals used for synchronization;

[0344] The signal used for measurement;

[0345] broadcast signals;

[0346] Broadcast channel;

[0347] System message.

[0348] Optionally, the CP parameter includes a CP type or a CP length.

[0349] Optionally, the processor is further configured to:

[0350] Based on the correspondence between the first information and the CP parameter, the CP parameter corresponding to the first information is determined.

[0351] Optionally, the first signal and the second signal are signals of different levels used for synchronization or measurement or acquisition of cell public information.

[0352] Optionally, the processor is further configured to:

[0353] The CP parameter of the first signal is determined based on the CP parameter of the second signal and the relative frequency domain position relationship or the relative time domain position relationship between the first signal and the second signal.

[0354] Optionally, the terminal type includes at least one of the following:

[0355] Whether it is a terminal that supports non-terrestrial networks;

[0356] Whether it is a terminal with reduced capabilities;

[0357] Whether the terminal supports low power consumption.

[0358] Optionally, when the indexes of multiple first signals correspond to the same CP parameter,

[0359] Among the indexes of the plurality of first signals, adjacent indexes have a specific interval threshold; or

[0360] The indexes of the plurality of first signals are consecutive signal numbers; wherein the signal numbers are generated by sequentially sorting based on the order of time units.

[0361] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the terminal side signal processing method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0362] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG3 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0363] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 8, 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. Antenna 81 is connected to radio frequency device 82. In the uplink direction, radio frequency device 82 receives information via antenna 81 and sends the received information to baseband device 83 for processing. In the downlink direction, baseband device 83 processes the information to be transmitted and sends it to radio frequency device 82. Radio frequency device 82 processes the received information and then sends it through antenna 81.

[0364] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 83 , which includes a baseband processor.

[0365] The baseband device 83 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 8, 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 network side device operations shown in the above method embodiment.

[0366] The network side device may further include a network interface 86, which is, for example, a Common Public Radio Interface (CPRI).

[0367] Specifically, the network side device 800 of the embodiment of the present application also includes: instructions or programs stored in the memory 85 and can be run on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute the methods executed by each module shown in Figure 5 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0368] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned signal processing method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0369] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0370] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned signal processing method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0371] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0372] An embodiment of the present application further provides 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 the various processes of the above-mentioned signal processing method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0373] An embodiment of the present application also provides a wireless communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the terminal side signal processing method described above, and the network side device can be used to execute the steps of the network side signal processing method described above.

[0374] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0375] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0376] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A signal processing method, comprising: The terminal determines cyclic prefix (CP) parameters according to first information, where the first information includes terminal type or relevant 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, measurement, or acquisition of cell public information.

2. The method according to claim 1, wherein, The relevant 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, wherein 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, wherein, The indication information includes at least one of the following: Information of the first signal for the 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, wherein, 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, wherein The CP parameters include CP type or CP length.

8. The method according to any one of claims 1 to 7, wherein, 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, wherein The first signal and the second signal are different - level signals for synchronization, 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. According to the method of any one of claims 1 to 10, wherein 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, wherein, In the case where the indices of multiple first signals correspond to the same CP parameter, Among the indices of the multiple first signals, there is a specific interval threshold between adjacent indices; or The indices of the multiple first signals are consecutive signal numbers; wherein, the signal numbers are generated by sorting in sequence based on the order of time units.

13. A signal processing method, comprising: The network - side device determines cyclic prefix (CP) parameters according to first information, where the first information includes terminal type or relevant 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 synchronizing or measuring or acquiring cell public information.

14. The method according to claim 13, wherein, The related 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 the signal included in the first signal; The index of the first signal; The indication information for determining the first signal.

15. The method according to claim 13 or 14, wherein, The CP parameter includes a CP type or a CP length.

16. The method according to any one of claims 13 to 15, wherein 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 correspondence between the first information and the CP parameter.

17. The method according to any one of claims 13 to 16, wherein 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, including: A first processing module, configured to determine a cyclic prefix CP parameter according to the first information, where the first information includes a terminal type or related information of a first signal; A receiving module, configured 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 apparatus according to claim 18, wherein, The related 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 the signal included in the first signal; The index of the first signal; The indication information for determining the first signal.

20. The device according to claim 18 or 19, wherein, The first processing module is further configured to: Determine the CP parameter corresponding to the first information based on the correspondence between the first information and the CP parameter.

21. The apparatus according to any one of claims 18 to 20, wherein, The first processing module is further configured 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, including: A second processing module, configured to determine a cyclic prefix CP parameter according to the first information, where the first information includes a terminal type or related information of a first signal; A sending module, configured 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, wherein, The second processing module is further configured to: Determine the CP parameter corresponding to the first information based on the correspondence between the first information and the CP parameter.

24. The apparatus according to claim 22 or 23, wherein, The second processing module is further configured 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, including a processor and a memory, where 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 according to any one of claims 1 to 12 are implemented.

26. A network-side device, comprising a processor and a memory, where the memory stores a program or instructions that can run on the processor, and when the program or instructions are executed by the processor, the steps of the signal processing method according to any one of claims 13 to 17 are implemented.

27. A readable storage medium, where a program or instructions are stored on the readable storage medium, and when the program or instructions are executed by a processor, the signal processing method according to any one of claims 1 to 12 is implemented, or the steps of the signal processing method according to any one of claims 13 to 17 are implemented.

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