Cyclic prefix type processing method and device and related equipment

Abstract

The invention discloses a cyclic prefix type processing method and device and related equipment, and belongs to the technical field of communication, and the cyclic prefix type processing method comprises the steps that a terminal executes a first operation, the first operation includes at least one of: associating a first signal of a first cyclic prefix (CP) type to a second signal of a second CP type; determining the CP type of a third signal, wherein the third signal comprises a signal in a random access process; determining TA offsets corresponding to different CP types; and changing the CP type of the signal from the third CP type to the fourth CP type when a preset condition is satisfied.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a method, apparatus, and related device for processing cyclic prefix types. Background Art

[0002] In related technologies, in order to support beams with different coverage sizes, the network needs to introduce different CP types for the downlink broadcast synchronization signals of different beams to resist the inter-symbol interference caused by different magnitudes of delay spread and also avoid the resource overhead caused by using an overly long CP. For example, different cyclic prefix (CP) lengths are supported for different synchronization signal / physical broadcast channel block (SSB) indices. For certain SSB indices with wide coverage (usually with a large delay spread and corresponding to certain large transmission and receiving points (TRPs)), a lengthened CP is used, and for certain SSB indices with small coverage (usually with a small delay spread and corresponding to certain small TRPs), a normal non-lengthened CP is used. However, in current communication systems, the CP type is not considered during communication processing, which is not conducive to improving communication reliability. Summary of the Invention

[0003] Embodiments of this application provide a method, apparatus, and related device for processing cyclic prefix types, which can solve the problem of how to improve communication reliability.

[0004] In a first aspect, a method for processing cyclic prefix types is provided, including:

[0005] A terminal performs a first operation, and the first operation includes at least one of the following:

[0006] Associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0007] Determining the CP type of a third signal, where the third signal includes signals in a random access process;

[0008] Determining TA offsets corresponding to different CP types;

[0009] Changing the CP type of a signal from a third CP type to a fourth CP type.

[0010] In a second aspect, a method for processing cyclic prefix types is provided, including:

[0011] A network-side device performs a second operation, and the second operation includes at least one of the following:

[0012] Associate a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0013] Determine the CP type of a third signal, where the third signal includes signals in a random access procedure;

[0014] When a preset condition is satisfied, change the CP type of a signal from a third CP type to a fourth CP type.

[0015] In a third aspect, a processing apparatus for cyclic prefix types is provided, including:

[0016] A first processing module for performing a first operation, where the first operation includes at least one of the following:

[0017] Associate a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0018] Determine the CP type of a third signal, where the third signal includes signals in a random access procedure;

[0019] Determine TA offsets corresponding to different CP types;

[0020] Change the CP type of a signal from a third CP type to a fourth CP type.

[0021] In a fourth aspect, a processing apparatus for cyclic prefix types is provided, including:

[0022] A second processing module for performing a second operation, where the second operation includes at least one of the following:

[0023] Associate a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0024] Determine the CP type of a third signal, where the third signal includes signals in a random access procedure;

[0025] Change the CP type of a signal from a third CP type to a fourth CP type.

[0026] In a fifth aspect, a terminal is provided, where the terminal includes a processor and a memory, and the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0027] In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the processor is used to perform a first operation, and the first operation includes at least one of the following:

[0028] Associate a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0029] Determine the CP type of a third signal, where the third signal includes a signal in a random access procedure;

[0030] Determine TA offsets corresponding to different CP types;

[0031] Change the CP type of a signal from a third CP type to a fourth CP type.

[0032] In a seventh aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instructions that can be run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0033] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. The processor is used to perform a second operation, and the second operation includes at least one of the following:

[0034] Associate a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0035] Determine the CP type of a third signal, where the third signal includes a signal in a random access procedure;

[0036] Change the CP type of a signal from a third CP type to a fourth CP type.

[0037] In a ninth aspect, a readable storage medium is provided. The readable storage medium stores a program or instructions. When the program or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0038] In a tenth aspect, a processing system for cyclic prefix types is provided, including: a terminal and a network-side device. 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.

[0039] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instructions to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0040] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the second aspect.

[0041] In an embodiment of the present application, the terminal performs a first operation, and the first operation includes at least one of the following: associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type; determining the CP type of a third signal, where the third signal includes a signal in a random access process; determining TA offsets corresponding to different CP types; and changing the CP type of a signal from a third CP type to a fourth CP type. The above solution achieves the purpose of signal association based on the CP type, determining the CP type of a signal in a random access process, determining TA offsets corresponding to different CP types, and / or switching the CP type of a signal, so that communication processing can be performed based on signals corresponding to the respective CP types, effectively avoiding resource waste and inter-symbol interference caused by an overly short CP. Or, the TA offset can be determined based on the corresponding CP type to compensate for the appropriate uplink and downlink time difference, and thus communication reliability can be effectively provided. Description of the Drawings

[0042] Figure 1 A structural diagram of a communication system to which an embodiment of the present application can be applied;

[0043] Figure 2 A schematic diagram showing one of the associations between RO and SSB;

[0044] Figure 3 A schematic diagram showing another association between RO and SSB;

[0045] Figure 4 A schematic flowchart showing one of the methods for processing cyclic prefix types in an embodiment of the present application;

[0046] Figure 5 A schematic flowchart showing another method for processing cyclic prefix types in an embodiment of the present application;

[0047] Figure 6 A schematic block diagram showing one of the devices for processing cyclic prefix types in an embodiment of the present application;

[0048] Figure 7 A schematic block diagram showing another device for processing cyclic prefix types in an embodiment of the present application;

[0049] Figure 8 A structural block diagram of a communication device in an embodiment of the present application;

[0050] Figure 9 A structural block diagram of a terminal in an embodiment of the present application;

[0051] Figure 10 A structural block diagram of a network-side device in an embodiment of the present application. Detailed Embodiments

[0052] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application fall within the protection scope of the present application.

[0053] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0054] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly tells the receiver specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0055] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably. The described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system.

[0056] Figure 1Block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0057] To enable those skilled in the art to better understand the embodiments of this application, the following explanations are provided first.

[0058] (1) 5G synchronization signal and Physical Broadcast Channel (PBCH);

[0059] In order for the UE to search for a reasonable cell and synchronize with the selected cell, it is usually necessary for the network to broadcast synchronization signals and provide certain primary information about the cell. The synchronization signals mainly include the primary synchronization signal and the secondary synchronization signal. The most important information carried by the PBCH is the system information, also known as the Master Information Block.

[0060] (2) Mapping rule of the synchronization signal / Physical Broadcast Channel block (SSB) to the Physical Random Access Channel transmission opportunity in 5G NR;

[0061] The configuration parameters of the PRACH resources and the SSB-RO are configured in the System Information Block (SIB) 1. In NR, a cell can configure multiple Frequency Division Multiplexing (FDM) Physical Random Access Channel transmission opportunities (PRACH transmission occasion, or PRACH Occasion for short, abbreviated as RO) in the time domain position for transmitting the PRACH. At a certain moment, the number of ROs that can perform FDM can be: {1, 2, 4, 8}, which is configured and determined by the higher layer parameter msg1-FDM.

[0062] The random access preamble can only be transmitted on the time domain resources configured by the parameter Physical Random Access Channel Configuration Index (PRACH Configuration Index) and the frequency domain resources configured by the parameter msg1-FDM. The PRACH frequency domain resource n RA ∈{0, 1, …, M - 1}, where M is equal to the higher layer parameter msg1-FDM. At the initial access, the PRACH frequency domain resource n RA is numbered in ascending order starting from the RO resource with the lowest frequency within the initial active uplink bandwidth part, otherwise, the PRACH frequency domain resource n RA is numbered in ascending order starting from the RO resource with the lowest frequency within the active uplink bandwidth part. For example, when the number of ROs for FDM at a certain moment is 8 (msg1-FDM = 8), the RO resources are numbered from RO#0 to RO#7 in ascending order of frequency.

[0063] In NR, there is an association relationship between the RO and the actually transmitted SSB. The RO is associated with the SSB in the order of frequency domain (from low frequency to high frequency) first and then time domain. One SSB may be associated with multiple consecutive ROs, or multiple SSBs may be associated with 1 RO (in this case, different SSBs correspond to different preambles), which is configured by the network through the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB. For example, oneEighth means that one SSB is associated with 8 consecutive ROs, eight means that 8 SSBs are associated with 1 RO, and {n4, n8, n12, …} represents the number of preambles associated with each SSB on one RO. For example, the value n4 means that the number of preambles associated with each SSB on one RO is 4, and n8 means that the number of preambles associated with each SSB on one RO is 4.

[0064] After all SSBs are associated with ROs for one round, it forms an SSB-RO mapping cycle. An association period from an SSB to ROs may contain one or more SSB-RO mapping cycles. An association pattern period from an SSB to ROs may contain one or more SSB-RO association periods. The mapping from SSBs to ROs is repeated in cycles of the association pattern period, and the maximum of the association pattern period is 160 ms.

[0065] Generally, the base station can use different beams to transmit different SSBs. Among them, the number of SSBs is configured by the ssb-PositionsInBurst parameter. For Frequency Range 2 (FR2), the maximum number of SSBs is 64. The UE selects the RO / "RO and preamble combination" associated with the SSB with good signal according to the intensity of the received downlink beam / SSB, and sends Msg1. In this way, the network can determine the SSB selected by the UE according to the RO / "RO and preamble combination" of the received Preamble, and send Msg2 on the downlink beam corresponding to the SSB to ensure the reception quality of the downlink signal.

[0066] For example, as Figure 2 shown, the number of ROs of FDM at a moment is 8, and the actual number of transmitted SSBs is 4. RO#0 and RO#1 are associated with SSB#0, RO#2 and RO#3 are associated with SSB#1, RO#4 and RO#5 are associated with SSB#2, and RO#6 and RO#7 are associated with SSB#3, that is, for SSB#0, SSB#1, SSB#2, SSB#3, each SSB is associated with 2 ROs. If the UE determines to send PRACH / Msg1 on the RO corresponding to SSB#0, then the UE selects one RO from RO#0 and RO#1 to send PRACH.

[0067] For example, Figure 3The following is a schematic diagram of the SSB to RO mapping. Each rectangular box indicates an RO, and the SSB therein is the SSB associated with the RO. The number of ROs in the FDM at a certain moment is 2, and the number of actually transmitted SSBs is 8, namely SSB#0, SSB#1, ……, SSB#7. Every 2 SSBs are associated with 1 RO. When multiple SSBs share one RO, the Preamble sets associated with these multiple SSBs are different, that is, the same Preamble cannot belong to the Preamble sets associated with different SSBs at the same time: Taking Figure 3 RO#0 in it as an example, RO#0 has a total of 60 Preambles. Among them, the Preambles with indexes from 0 to 29 are associated with SSB#0, and the Preambles with indexes from 30 to 59 are associated with SSB#1.

[0068] Before the UE sends the PRACH, it first selects the SSB whose RSRP of the received beam (SSB) is higher than the threshold according to the received RSRP; if the RSRPs of multiple SSBs are higher than the threshold, the terminal can select any SSB with an RSRP higher than the threshold; when there is no SSB with an RSRP higher than the threshold, the UE selects an SSB based on the implementation.

[0069] Based on the configuration of the Network (NW), the UE obtains the corresponding relationship between the SSB and the RO. After selecting the SSB, the RO corresponding to the selected SSB is used as the RO for sending the PRACH / Preamble / Msg1. If the selected SSB is associated with multiple ROs, the terminal can select one of them to send the PRACH / Preamble / Msg1.

[0070] For example: In the Figure 2 shown example, assuming the UE selects SSB#1, the UE can select one of RO#2 and RO#3 to send the PRACH / Msg1; in the Figure 3 shown example, if the UE selects SSB#1, the UE can select the RO (RO#0 or 4) associated with SSB#1 that is the nearest available RO to the current time to send the PRACH / Msg1. Among the selected ROs, the UE selects a Preamble from the Preamble set associated with the selected SSB to send the PRACH. As in Figure 3 where one RO is associated with 2 SSBs, then in the available Preamble set associated with the SSB in one RO, the Preambles will be divided into two subsets, and each subset corresponds to one SSB. The UE will select a certain Preamble sequence from the Preamble subset corresponding to the selected SSB for sending the PRACH / Msg1.

[0071] (3) Random access procedure;

[0072] There are many purposes for random access. For example, the random access triggered by PDCCH order is mainly to enable the UE to obtain uplink time synchronization. Another example is that when the UE establishes an initial radio link, it can obtain the user identifier - Cell Radio Network Temporary Identifier (Cell RNTI, C-RNTI) information through the random access procedure.

[0073] In the prior art, the random access procedure can be a contention-based random access procedure or a non-contention-based random access procedure. The random access procedure can be a four-step random access procedure (also called Type-1 random access procedure) or a two-step random access procedure (also called Type-2 random access procedure).

[0074] In the contention-based 4-step random access procedure (Random Access Channel, RACH), the UE first sends msg1 to the network, which contains the preamble; after the network detects the preamble, it will send a msg2 / RAR (Random Access Response) message, which contains the number of the preamble detected by the network and the uplink radio resources allocated to the UE to send msg3; after the UE receives msg2, it confirms that at least one of the preamble numbers carried in msg2 is the same as the preamble number it sent, and then sends msg3 containing contention resolution information according to the resources indicated by the RAR; after the network receives msg3, it will send msg4 containing contention resolution information; after the UE receives msg4 and confirms that the resolution information is the same as that sent by itself in msg3, the 4-step random access is completed.

[0075] The network includes uplink scheduling (UL grant) information in the RAR to indicate the MSG3 PUSCH scheduling information, and includes the identifier of the preamble of the random access procedure (RACH preamble ID, RAPID), Temporary-Cell Radio Network Temporary Identifier (Temporary-CRNTI, TC-RNTI), Timing Advance (TA), etc. If the network does not receive the MSG3 PUSCH, it can schedule the retransmission of the MSG3 PUSCH in the PDCCH scrambled with the TC-RNTI.

[0076] For the competitive random access process, different UEs randomly select preambles for transmission. In this way, different UEs may select the same preamble to send on the same time-frequency radio resource (RO resource). This situation can be understood as a preamble conflict among UEs. In this case, different UEs will receive the same RAR. Then, different UEs will perform the transmission of MSG3 PUSCH according to the scheduling information in the RAR UL grant. Since the existing technology does not support the repeated transmission of MSG.3 PUSCH, the network can only decode the PUSCH (including the contention resolution information) sent by one UE on a MSG3 PUSCH scheduling resource. Therefore, the network will include the contention resolution information received in MSG3 in MSG4. If the contention resolution information in the MSG4 received by the UE matches the contention resolution information sent by the UE in the MSG3 PUSCH, the UE considers the contention resolution successful. If not, it is considered that the contention resolution is unsuccessful.

[0077] If the contention resolution is unsuccessful, the UE re-selects the RACH transmission resource, performs the PRACH transmission, and conducts the next random access attempt.

[0078] In NR Rel-16, the two-step random access process 2-step RACH is introduced. The first step is for the UE to send MsgA to the network side. After receiving MsgA, the network side sends MsgB to the UE. If the UE does not receive MsgB within a certain period of time, the UE will accumulate the counter for counting the number of MsgA transmissions and re-send MsgA. If the counter for counting the number of MsgA transmissions reaches a certain threshold, the UE will switch from the 2-step random access process to the 4-step random access process.

[0079] MsgA includes a MsgA preamble part and a MsgA PUSCH part. The preamble part is sent on the RO for the 2-step RACH, and the PUSCH part is sent on the MsgA PUSCH resource associated with the transmission of the MsgA preamble and the RO. The MsgA PUSCH resource is a set of PUSCH resources configured for each PRACH slot, including time-frequency resources and DMRS resources, and is associated with the PRACH resources within the PRACH slot.

[0080] The network-triggered non-competitive random access process is as follows:

[0081] 1. Receive the random access resource configuration information corresponding to the non-competitive random access procedure indicated by the NW. The configuration information can be used for Beam Failure Recovery (BFR), Hand Over (HO), or the non-competitive random access procedure triggered by PDCCH order. The corresponding configuration information indicates the beam indication (SSB or CSI-RS) applicable to the non-competitive random access procedure and the associated non-competitive Preamble. For BFR and HO, the corresponding configuration information may also include RO configuration information and the Reference Signal Received Power (RSRP) threshold for beam selection.

[0082] 2. After obtaining the configuration information, for BFR and HO, the UE determines whether to use the non-competitive random access resources based on the measured beam quality and the RSRP threshold (e.g., the non-competitive random access resources will be used only if the beam quality is higher than the RSRP threshold). Subsequently, after the UE selects a beam and its corresponding non-competitive Preamble, it sends Msg1 (non-competitive Preamble) to the network side. After receiving Msg1, the network side sends a Msg2 (RAR) message to the UE, which carries uplink grant information and the preamble ID of the random access preamble. If the preamble ID is the same as the random access preamble ID sent by the UE in Msg1, the UE considers the random access procedure successful and sends the PUSCH scheduled by RAR. Otherwise, the PREAMBLE_TRANSMISSION_COUNTER is incremented by one, and a new random access attempt is initiated. The random access resources are selected again, and Msg1 is sent.

[0083] (4) Determination of the RO set during repeated PRACH transmission;

[0084] PRACH retransmission is introduced in Rel-18 to enhance uplink coverage. For PRACH retransmission, the UE needs to retransmit the Preamble on multiple ROs at different time domain positions associated with the same SSB, and the number of retransmissions can be {2, 4, 8}. After determining the PRACH retransmission times, the UE needs to determine the RO set (group), and the number of valid ROs in the RO set is equal to the PRACH retransmission times. Assume the PRACH retransmission times is N1, and the RO group determination rule is: first determine the starting RO of the RO group, and then determine the remaining N1 - 1 ROs of the RO group. The remaining N1 - 1 ROs of each RO group are ROs that are associated with the same SSB as the starting RO, at the same frequency position, and have the same associated Preamble set.

[0085] (5) Cyclic prefix;

[0086] In an Orthogonal Frequency Division Multiplexing (OFDM) system, an OFDM symbol usually consists of two parts. The first part is the Cyclic Prefix (CP), and the second part is the time domain signal obtained after IFFT transformation. The cyclic prefix consists of the last Ncp sampling points of the second part.

[0087] Without a CP, there may be inter-symbol interference between two adjacent OFDM symbols. For example, due to multipath delay, the trailing edge of the previous OFDM symbol may overlap with multiple sampling points at the start of the second OFDM symbol, or due to timing error, the FFT time window at the receiving end may include the last multiple sampling points of the previous OFDM symbol and partial 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 transmission delay and the delay caused by timing error), can ensure that only the signal of the current OFDM symbol is included within the FFT time window at the receiving end, without inter-symbol interference. It is not difficult to see that the length of the CP is related to the channel environment. For example, in an environment with a relatively small propagation delay, a shorter CP is sufficient to eliminate inter-symbol interference. In an environment with a larger propagation delay, a longer CP is required. Therefore, the NR / LTE system supports two types of CPs, one is called the normal CP (Normal CP, NCP), and the other is called the extended CP (Extended CP, ECP). The CP can avoid inter-symbol interference, but since the CP part cannot carry additional information, the overhead of the CP part will lead to a reduction in resource efficiency, that is, within an OFDM symbol, the longer the CP, the higher the proportion it occupies, and the lower the transmission efficiency of this OFDM symbol. In the case of NCP, 14 OFDM symbols can be transmitted in one time slot. In the case of ECP, only 12 OFDM symbols can be transmitted in one time slot. In system design, it is usually necessary to consider the trade-off between transmission efficiency and inter-symbol interference.

[0088] The NR system can support different subcarrier spacings (Subcarrier spacing, SCS). For different SCSs, the ratio of the number of sampling points in the first part (CP) and the second part within the OFDM symbol is the same, thus ensuring the same transmission efficiency. For any SCS, for a specific OFDM symbol, the ratio of the number of sampling points in the first part of NCP to the second part is 144:2048. If the first part is ECP, then the ratio is 512:2048. It can be seen that since the ratio of the first part to the second part does not change with the SCS, the time length of the CP part decreases as the SCS increases.

[0089] In the NR system, after evaluation, although as the SCS increases, the CP length becomes shorter, in the FR1 scenario, when SCS = 15KHz and 30KHz, the NCP length is also sufficient to reduce inter-symbol interference, but when SCS = 60KHz, the NCP length is not sufficient under some channel conditions. Therefore, when SCS = 60KHz, both NCP and ECP are supported. In the FR2 and FR2-2 scenarios, due to the reduced coverage range and the use of analog beams, the multipath delay is significantly shorter than that in FR1. Therefore, although the CP length becomes shorter as the SCS increases, the length of the NCP is still sufficient.

[0090] In addition, for the NR / LTE system, the time and frequency domain deviations of the UE or the base station caused by hardware need to meet specific requirements. For example, the UE needs to meet the carrier frequency domain deviation (CFO) not exceeding 0.1 ppm, and the UE regularly corrects the time and frequency domain deviations according to the synchronization signal. Therefore, the length of the CP required due to the timing error can be basically ignored. In the NR system, when the base station configures the BWP, it configures the only CP type (NCP or ECP) for this BWP.

[0091] (6) Timing Advance (TA) and TA offset;

[0092] In 5G, the Timing Advance (TA) applied by the UE is determined by the following formula:

[0093] T TA =(N TA +N TA,UE-specific +N TA,common +N TA,offset )×T c ;

[0094] Wherein, N TA is indicated and updated by the TA command field in msg2 / msgB or the TA command in the MAC CE; for PRACH, N TA =0;

[0095] N TA,UE-specific is the TA autonomously estimated and pre-compensated by the UE in the Non Terrestrial Network (NTN);

[0096] N TA,common is the common TA controlled and indicated by the network in the NTN;

[0097] N TA,offset is a fixed timing offset, depending on the frequency band and LTE / NR coexistence, and is specified by network configuration or protocol;

[0098] T c is the basic time unit, T c =1 / (Δf max ·N f ) Wherein, Δf max =480·10 3 Hz, N f =4096.

[0099] And among them, N TA,UE-specificIt is calculated by the UE based on some auxiliary information, such as the UE location and the ephemeris of the serving satellite.

[0100] The NTN UE supports at least calculating and pre-compensating the Doppler frequency shift on the service link based on the UE location and the ephemeris of the serving satellite.

[0101] The above N TA,common The relevant parameters and the ephemeris of the serving satellite use the same validity duration, which is broadcast by the system message and indicated by 4 bits. The optional values are {5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 120, 180, 240, 900 (for GEO)}, and the unit is seconds.

[0102] Within a validity duration, the UE assumes that N TA,common the relevant parameters and the ephemeris of the serving satellite are valid and there is no update.

[0103] If within a validity duration, N TA,common the relevant parameters and the ephemeris of the serving satellite are unavailable, the UE assumes uplink out-of-sync.

[0104] The above validity duration starts from the epoch time of the auxiliary information (such as the ephemeris of the serving satellite).

[0105] When the epoch time is explicitly indicated by the system message, the epoch time is the start time of a DL subframe, which is indicated by the system frame number (SFN) and the subframe number.

[0106] When the system message does not explicitly indicate the epoch time, the epoch time can be implicitly determined by the end time of the system information window (SI window) that transmits the NTN-specific SIB.

[0107] When the epoch time is indicated by dedicated signaling, the epoch time is the start time of a DL subframe, which is indicated by the system frame number (SFN) and the subframe number.

[0108] For N TA,offset , in the Terrestrial Network (TN), its value depends on the duplex mode (TDD or FDD) and the frequency band range.

[0109] The following will, in conjunction with the accompanying drawings, describe in detail the method for processing cyclic prefix types provided by the embodiments of the present application through some embodiments and their application scenarios.

[0110] As Figure 4 shown, the embodiments of the present application provide a method for processing cyclic prefix types, including:

[0111] Step 401: The terminal performs a first operation, and the first operation includes at least one of the following:

[0112] The first item: Associate a first signal of a first cyclic prefix CP type with a second signal of a second CP type.

[0113] The above first CP type and second CP type are the same or different.

[0114] In the embodiments of the present application, the above first signal and second signal may be signals for implementing a preset communication function. Since different CP types can support beams with different coverage sizes, by mapping the first signals of different first CP types to the second signals, the communication function under different coverage sizes can be realized. For example, small data transmission under different coverage sizes, or random access under different coverage sizes, or triggering of on demand SSB (on demand SSB) under different coverage sizes, or triggering of on demand SSB and PRACH resources under different coverage sizes, or activation of flexible RO (flexible RO) under different coverage sizes can be realized through the first signal of the above first CP type and the associated second signal of the second CP type.

[0115] The second item: Determine the CP type of a third signal, where the third signal includes signals in the random access process.

[0116] The above random access process includes but is not limited to two-step random access, four-step random access, and RACH less access.

[0117] Here, by determining the CP type of the signal in the random access process, each step of transmission in the random access process can use a matching CP type, avoiding resource waste or inter-symbol interference caused by too short CP.

[0118] The third item: Determine the TA offset corresponding to different CP types.

[0119] For the first uplink transmission of the terminal in the selected network, it is supported to determine different TA offsets based on the CP type to compensate for the appropriate uplink and downlink time differences.

[0120] The fourth item: Change the CP type of the signal from a third CP type to a fourth CP type.

[0121] Here, the switching of the CP type can be implemented, enabling the terminal to switch to the beam corresponding to the corresponding CP type based on changes in various factors, improving resource utilization efficiency and the communication reliability of the system.

[0122] It should be noted that in the embodiments of the present application, one CP type corresponds to at least one CP length, or one CP type corresponds to at least one signal format related to the CP. For example, the CP length corresponding to the first CP type is the length of the normal CP, and the CP length corresponding to the second CP type is the length of the extended CP.

[0123] In the embodiments of the present application, the terminal performs a first operation, and the first operation includes at least one of the following: associating a first signal of a first cyclic prefix CP type with a second signal of a second CP type; determining the CP type of a third signal, where the third signal includes a signal in a random access process; determining the TA offset corresponding to different CP types; changing the CP type of a signal from a third CP type to a fourth CP type. The above solutions achieve the purpose of signal association based on the CP type, determining the CP type of the signal in the random access process, determining the TA offset corresponding to different CP types, and / or switching the CP type of the signal, so as to be able to perform communication processing based on the signal corresponding to the corresponding CP type, effectively avoiding resource waste and inter-symbol interference caused by too short CP, or being able to determine the TA offset based on the corresponding CP type to compensate for the appropriate uplink and downlink time difference, and thus being able to effectively improve communication reliability.

[0124] Optionally, the first signal includes at least one of the following:

[0125] Synchronization Signal Block (SSB);

[0126] Channel State Information Reference Signal (CSI-RS);

[0127] Sounding Reference Signal (SRS);

[0128] Physical Random Access Channel (PRACH);

[0129] Wake Up Signal (WUS).

[0130] The SSB in the embodiments of this application may also be described as any module that includes at least one of synchronization signals, broadcast signals, physical broadcast channels (PBCHs), other system messages, downlink broadcast channels, or their control channels.

[0131] Optionally, the second signal includes at least one of the following:

[0132] CSI-RS;

[0133] PRACH;

[0134] Physical Uplink Shared Channel (PUSCH); for example, a Configured Grant (CG) PUSCH for small data transmission in the idle or inactive state, or a MsgA PUSCH in the two-step random access process, or the first uplink PUSCH transmission or its retransmission in a RACH-less process;

[0135] SRS;

[0136] Wake-up signal;

[0137] Positioning Reference Signal (PRS).

[0138] For example, assume there are two types of SSBs. SSB type 1 uses the normal CP type, and SSB type 2 uses the extended CP type. There are two CG PUSCH configurations for the terminal to perform small data transmission in the RRC inactive state. CG PUSCH configuration 1 uses normal CP, and CG PUSCH configuration 2 uses extended CP. At this time, SSB type 1 can be mapped to CG PUSCH configuration 1, and SSB type 2 can be mapped to CG PUSCH configuration 2, so as to support small data transmission under two coverage sizes.

[0139] For another example, assume there are two types of SSBs. SSB type 1 uses the normal CP type, and SSB type 2 uses the extended CP type. There are two types of PRACH resources for four-step random access. PRACH type 1 uses the RPACH format of normal CP, and PRACH type 2 uses the long CP format, such as a long sequence. At this time, SSB type 1 can be mapped to PRACH configuration 1, and SSB type 2 can be mapped to PRACH configuration 2, so as to support random access under two coverage sizes.

[0140] For another example, assume there are two types of on demand SSB. The CP type used by SSB type 1 is normal CP, and the CP type used by SSB type 2 is extended CP. There are two WUS resource configurations for triggering on demand SSB. The CP type used by WUS configuration 1 is normal CP, and the CP type used by WUS configuration 2 is extended CP. At this time, SSB type 1 can be mapped to WUS configuration 1, and SSB type 2 can be mapped to WUS configuration 2, so as to support the triggering of on demand SSB under two coverage sizes.

[0141] For another example, assume there are two types of on demand SSB. The CP type used by SSB type 1 is normal CP, and the CP type used by SSB type 2 is extended CP. There are two types of PRACH resources for four-step random access. The CP type used by PRACH type 1 is the RPACH format of normal CP, and the CP type used by PRACH type 2 is the long CP format, such as a long sequence. There are two WUS resource configurations for triggering on demand SSB and the PRACH resources associated with on demand SSB. The CP type used by WUS configuration 1 is normal CP, and the CP type used by WUS configuration 2 is extended CP. At this time, SSB type 1 can be mapped to WUS configuration 1, SSB type 2 can be mapped to WUS configuration 2, and SSB type 1 can be mapped to PRACH configuration 1, and SSB type 2 can be mapped to PRACH configuration 2, so as to support the triggering of on demand SSB and PRACH resources under two coverage sizes.

[0142] For another example, assume there are two types of flexible PRACH resources. The CP type used by PRACH type 1 is the RPACH format of normal CP, and the CP type used by PRACH type 2 is the long CP format, such as a long sequence. There are two WUS resource configurations for activating flexible PRACH resources. The CP type used by WUS configuration 1 is normal CP, and the CP type used by WUS configuration 2 is extended CP. At this time, PRACH type 1 can be mapped to WUS configuration 1, and PRACH type 2 can be mapped to WUS configuration 2, so as to support the activation of flexible RO under two coverage sizes.

[0143] Optionally, the first signal and the second signal satisfy at least one of the following:

[0144] Corresponding to different signal indexes;

[0145] Corresponding to different signal index groups;

[0146] Two signals configured independently;

[0147] Corresponding to different time units; optionally, the time unit is the time period corresponding to the signal;

[0148] Corresponding to different frequency domain units; for example, the frequency domain unit is BWP;

[0149] Corresponding to different serving cells;

[0150] Corresponding to different carriers;

[0151] Corresponding to different bandwidths (bands);

[0152] Corresponding to different subbands;

[0153] Corresponding to different sub - carrier spacings (Sub - Carrier Space, SCS).

[0154] Optionally, the method of the embodiments of the present application further includes:

[0155] Determine the validity of the time advance TA for PUSCH transmission or for SRS transmission or for wake - up signal transmission according to the CP type of PUSCH, the CP type of SRS, or the CP type of the wake - up signal.

[0156] As an implementation manner, determining the validity of TA for PUSCH transmission or for SRS transmission or for wake - up signal transmission according to the CP type of PUSCH, the CP type of SRS, or the CP type of the wake - up signal includes:

[0157] Determine the corresponding measurement quantity change threshold according to the CP type of PUSCH, the CP type of SRS, or the CP type of the wake - up signal;

[0158] Determine the validity of TA for PUSCH transmission or for SRS transmission or for wake - up signal transmission according to the relationship between the measurement quantity of the measurement signal and the measurement quantity change threshold.

[0159] For example, when the change value of the measurement quantity of the measurement signal is less than or equal to the above - mentioned measurement quantity change threshold, determine that the TA for PUSCH transmission or for SRS transmission or for wake - up signal transmission is valid.

[0160] Optionally, the measurement quantity change threshold includes at least one of the following: the RSRP change threshold of the downlink signal, the round-trip time (RTT) change threshold, the propagation delay change threshold, and the terminal position change threshold.

[0161] The above measurement quantity change threshold can also be the change threshold corresponding to other measurement quantities for positioning.

[0162] For example, the RSRP change threshold can be independently configured with corresponding values for different CP types. For example, for PUSCH with a larger CP length, the RSRP change threshold can be configured larger, and for PUSCH with a smaller CP length, the RSRP change threshold can be configured smaller.

[0163] For another example, the RTT change threshold or the propagation delay change threshold can be independently configured with corresponding values for different CP types. For example, for PUSCH with a larger CP length, the RTT change threshold or the propagation delay change threshold can be configured larger, and for PUSCH with a smaller CP length, the RTT change threshold or the propagation delay change threshold can be configured smaller.

[0164] For yet another example, the terminal position change threshold can be independently configured with corresponding values for different CP types. For example, for PUSCH with a larger CP length, the terminal position change threshold can be configured larger, and for PUSCH with a smaller CP length, the terminal position change threshold can be configured smaller.

[0165] As an implementation, determining the validity of the time advance (TA) for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal includes:

[0166] Determining the validity of the time advance (TA) for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal, and the measurement signal;

[0167] Wherein, the CP type of the measurement signal is associated with the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

[0168] For example, the CP type of the measurement signal is the same as the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

[0169] Optionally, determining the CP type of the third signal includes:

[0170] Determining the CP type of the third signal according to at least one of the following;

[0171] The type of reference signal associated with the target signal selected by the terminal, where the target signal includes at least one of Message 1 (Msg1), Message A (MsgA), and PUSCH in a random access channel (RACH)-less process;

[0172] The frequency band or syncraster where the reference signal associated with the target signal selected by the terminal is located;

[0173] The location of the terminal;

[0174] Default value; for example, the CP type corresponding to the longest CP length;

[0175] Time Advance Group (TAG) identifier;

[0176] Random access type; for example, ECP is used for two-step random access, and NCP is used for four-step random access;

[0177] The CP type specified by the network; for example, for contention-free random access (CFRA), the network can tell the terminal which CP type or signal format to use in dedicated signaling or physical layer signaling; furthermore, the network indirectly specifies it through the control channel that sends the scheduling dedicated signaling or the search space or control resource set (CORESET) where the control channel that sends the physical layer signaling is located; for example, the network specifies the CP length or type of Msg3 through msg2;

[0178] The CP type assumed for the previous transmission;

[0179] The size of the TA; for example, when the TA specified by the network through msg2 is greater than or not less than a certain value, a long CP is used for Msg3.

[0180] Optionally, the third signal includes at least one of the following:

[0181] Msg1, MsgA, PUSCH in a RACH-less process, Msg2, Msg3, Msg4, MsgB, feedback message of PUSCH in a RACH-less process, PDCCH scheduled by PUSCH in a RACH-less process.

[0182] Exemplarily, the format or CP length of Msg1, MsgA, or RACH-less PUSCH transmission is determined by one or more of the following methods: the type of reference signal associated with the target signal selected by the terminal; the frequency band or synchronization raster where the reference signal associated with the target signal selected by the terminal is located; the location of the terminal; the default value; the time advance group (TAG) identifier; the type of random access; the CP type specified by the network.

[0183] Exemplarily, the feedback message PDSCH of Msg2 PDSCH, Msg3 PUSCH, Msg4 PDSCH, MsgB PDSCH, or RACH-less PUSCH, or its scheduling PDCCH determines the CP type in one or more of the following ways: the type of reference signal associated with the corresponding target signal selected by the terminal; the frequency band or synchronization raster where the reference signal associated with the corresponding target signal selected by the terminal is located; the location of the terminal; the default value; the time advance group (TAG) identifier; the type of random access; the CP type specified by the network; the CP type assumed in the previous transmission; the size of the TA.

[0184] By determining the CP type of the signal in the random access process, the CP type of the signal in the random access process can be matched with the CP type of the selected SSB or PRACH, so that random access in a specific coverage area can be achieved.

[0185] Optionally, determining the TA offset corresponding to different CP types includes at least one of the following:

[0186] The first item: determining the TA offset corresponding to different CP types according to the first TA offset table, where the first TA offset table includes the TA offsets corresponding to at least two CP types;

[0187] The second item: determining the TA offset corresponding to different CP types according to the second TA offset table, where the second TA offset table includes the offset values of the TA offsets corresponding to at least two CP types relative to the reference TA offset;

[0188] The third item: determining the TA offset corresponding to different CP types according to the third TA offset table, where each third TA offset table corresponds to the default value of the TA offset corresponding to one CP type;

[0189] The fourth item: determining the TA offset corresponding to different CP types according to the function of the TA offset corresponding to the preset CP type or the reference TA offset; for example, the TA offset of CP type 2 is 1 / 2 of the TA offset of type 1.

[0190] Item 5: Determine the TA offset corresponding to different CP types according to the TA offset indicated by the network.

[0191] In the embodiments of the present application, the network may introduce a reference to indicate the TA offset corresponding to different CP types, or introduce a reference to indicate the offset value of the TA offset of different CP types relative to a certain CP type. Optionally, if the network only indicates one TA offset, the terminal considers that this offset is applicable to all CP types or the terminal considers that this offset is only applicable to a specific CP type, and the other CP types adopt default values. For example, two parameters are introduced to respectively indicate the TA offsets of two CP types. The specific configuration information format of the parameters is as follows:

[0192] ServingCellConfigCommon::= SEQUENCE {

[0193] physCellId PhysCellId OPTIONAL, -- Cond HOAndServCellAdd,

[0194] downlinkConf 8igCommon DownlinkConfigCommon OPTIONAL, -- CondHOAndServCellAdd

[0195] uplinkConfigCommon UplinkConfigCommon OPTIONAL, -- Need M

[0196] supplementaryUplinkConfig UplinkConfigCommon OPTIONAL, -- Need S

[0197] n-TimingAdvanceOffsetCPType1 ENUMERATED {n0, n25600, n39936} OPTIONAL, -- Need S

[0198] n-TimingAdvanceOffsetCPType2 ENUMERATED {n0, n12800, n19968} OPTIONAL, -- Need S.

[0199] Exemplarily, as shown in Table 1, the TA offsets under two CP types are defined.

[0200] Table 1

[0201]

[0202] In the embodiments of this application, different TAoffsets are determined based on the CP type to compensate for the appropriate uplink-downlink time difference and provide system communication reliability.

[0203] Optionally, changing the CP type of the signal from the third CP type to the fourth CP type includes:

[0204] When a preset condition is met, changing the CP type of the signal from the third CP type to the fourth CP type;

[0205] Wherein, the preset condition includes at least one of the following:

[0206] The measurement of the reference signal corresponding to the third CP type is less than or equal to the first threshold; optionally, the measurement includes energy or quality or a function of energy or a function of quality, wherein energy can be represented by Reference Signal Received Power (RSRP), and quality can be represented by Reference Signal Received Quality (RSRQ), signal-to-noise and interference ratio (SINR), or SIGNAL-NOISE RATIO (SNR);

[0207] The measurement of a group of reference signals associated with the third CP type is less than or equal to the second threshold;

[0208] The measurement of the reference signal corresponding to the fourth CP type is greater than or equal to the measurement of the reference signal corresponding to the third CP type;

[0209] The function of the measured value Y of the measurement of the reference signal corresponding to the fourth CP type and the measured value X of the measurement of the reference signal corresponding to the third CP type meets certain conditions; for example, X / Y < α; α is specified by network configuration or protocol;

[0210] The change value of the terminal TA value at two moments is greater than or equal to the third threshold;

[0211] The change value of the terminal location information at two moments is greater than or equal to the fourth threshold;

[0212] The terminal switches the transmission and reception point TRP or TRP group;

[0213] The terminal switches the reference signal or reference signal group;

[0214] The terminal switches the TAG;

[0215] The terminal switches the BWP;

[0216] Terminal switching intelligent reconfigurable intelligent surface (RIS) device;

[0217] The signals received or sent by the terminal are transmitted through the RIS.

[0218] The terminal switches from the terrestrial network TN to the non-terrestrial network NTN.

[0219] The terminal switches satellites.

[0220] The terminal receives indication information for indicating a CP type switch.

[0221] The delay spread estimated or obtained by the terminal is greater than or equal to a fifth threshold.

[0222] Optionally, the reference signal includes at least one of the following:

[0223] A signal for channel information measurement; for example, CSI-RS;

[0224] A signal for time-frequency estimation; for example, TRS;

[0225] A reference signal for positioning; for example, PRS;

[0226] A signal dedicated to CP or CP group selection, reselection, or switching; for example, a signal dedicated to TRP or TRP group selection, reselection, or switching configured additionally by the network;

[0227] A signal dedicated to TRP or TRP group selection, reselection, or switching; for example, a signal dedicated to TRP or TRP group selection, reselection, or switching configured additionally by the network and sent by the corresponding TRP or a TRP within the TRP group to the terminal;

[0228] A signal module including a synchronization signal or a broadcast signal; for example, SSB.

[0229] In the embodiments of the present application, when the environment where the terminal is located changes, for example, when the location changes, the current CP type may not be applicable anymore, so it is necessary to switch to a more reasonable CP type for signal transmission and reception. Through the above solution, it can be ensured that the terminal switches to the beam of the corresponding CP type, improving resource utilization efficiency and system reliability.

[0230] In an embodiment of the present application, a terminal performs a first operation, and the first operation includes at least one of the following: associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type; determining the CP type of a third signal, where the third signal includes a signal in a random access process; determining TA offsets corresponding to different CP types; and changing the CP type of a signal from a third CP type to a fourth CP type. The above solution achieves the purpose of signal association based on the CP type, determining the CP type of a signal in a random access process, determining TA offsets corresponding to different CP types, and / or switching the CP type of a signal, so that communication processing can be performed based on signals corresponding to the respective CP types, effectively avoiding resource waste and inter-symbol interference caused by an overly short CP, or being able to determine an appropriate TA offset based on the corresponding CP type to compensate for the uplink and downlink time difference, and thus being able to effectively improve communication reliability.

[0231] As Figure 5 shown, an embodiment of the present application further provides a method for processing cyclic prefix types, including:

[0232] Step 501: A network-side device performs a second operation, and the second operation includes at least one of the following:

[0233] The first item: Associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0234] The above first CP type and second CP type are the same or different.

[0235] In an embodiment of the present application, the above first signal and second signal may be signals for implementing a preset communication function. Since different CP types can support beams with different coverage sizes, by mapping the first signals of different first CP types to the second signal, communication functions under different coverage sizes can be implemented. For example, small data transmission under different coverage sizes, or random access under different coverage sizes, or triggering of on demand single sideband (SSB) under different coverage sizes, or triggering of on demand SSB and physical random access channel (PRACH) resources under different coverage sizes, or activation of flexible range over (flexible RO) under different coverage sizes can be implemented through the first signal of the above first CP type and the associated second signal of the second CP type.

[0236] The second item: Determining the CP type of a third signal, where the third signal includes a signal in a random access process;

[0237] The above random access process includes, but is not limited to, two-step random access, four-step random access, and random access channel (RACH) less access.

[0238] Here, by determining the CP type of the signal in the random access process, each step of transmission in the random access process can use a matching CP type, avoiding resource waste or inter-symbol interference caused by too short CP.

[0239] The third item: change the CP type of the signal from the third CP type to the fourth CP type.

[0240] Here, the switching of the CP type can be realized, enabling the terminal to switch to the beam of the corresponding CP type based on the changes of various factors, improving the resource utilization efficiency and the communication reliability of the system.

[0241] It should be noted that in the embodiments of the present application, one CP type corresponds to at least one CP length, or one CP type corresponds to at least one signal format related to the CP. For example, the CP length corresponding to the first CP type is the length of the normal CP, and the CP length corresponding to the second CP type is the length of the extended CP.

[0242] In the embodiments of the present application, the network-side device performs a second operation, and the second operation includes at least one of the following: associating a first signal of the first cyclic prefix CP type with a second signal of the second CP type; determining the CP type of a third signal, where the third signal includes the signal in the random access process; changing the CP type of the signal from the third CP type to the fourth CP type. The above solutions achieve the purpose of signal association based on the CP type, determining the CP type of the signal in the random access process, and / or switching the CP type of the signal, so that communication processing can be performed based on the signal corresponding to the corresponding CP type, and further the communication reliability can be effectively provided.

[0243] Optionally, the first signal includes at least one of the following:

[0244] Synchronization signal / Physical broadcast channel signal block SSB;

[0245] Channel state information reference signal CSI-RS;

[0246] Sounding reference signal SRS;

[0247] Physical random access channel PRACH;

[0248] Wake-up signal.

[0249] Optionally, the second signal includes at least one of the following:

[0250] CSI-RS;

[0251] PRACH;

[0252] Physical uplink shared channel PUSCH;

[0253] SRS;

[0254] Wake-up signal;

[0255] Positioning reference signal PRS.

[0256] Optionally, the first signal and the second signal satisfy at least one of the following:

[0257] Corresponding to different signal indexes;

[0258] Corresponding to different signal index groups;

[0259] Two independently configured signals;

[0260] Corresponding to different time units;

[0261] Corresponding to different frequency domain units;

[0262] Corresponding to different serving cells;

[0263] Corresponding to different carriers;

[0264] Corresponding to different bandwidths;

[0265] Corresponding to different subbands;

[0266] Corresponding to different subcarrier spacings.

[0267] The first signal and the second signal have been described in detail in the method embodiments on the terminal side and will not be elaborated here.

[0268] Optionally, determining the CP type of the third signal includes:

[0269] Determine the CP type of the third signal according to at least one of the following;

[0270] The type of reference signal associated with the target signal selected by the terminal, where the target signal includes at least one of Message 1 Msg1, Message A MsgA, and PUSCH without a random access channel RACH-less process;

[0271] The frequency band or synchronization grid where the reference signal associated with the target signal selected by the terminal is located;

[0272] The location of the terminal;

[0273] Default value;

[0274] Time Advance Group TAG identifier;

[0275] Random access type;

[0276] CP type specified by the network;

[0277] CP type assumed for the previous transmission;

[0278] Size of TA.

[0279] Optionally, the third signal includes at least one of the following:

[0280] Msg1, MsgA, PUSCH for RACH-less procedure, Msg2, Msg3, Msg4, MsgB, feedback message of PUSCH for RACH-less procedure, PDCCH scheduled by PUSCH for RACH-less procedure.

[0281] It should be noted that the method for the network-side device to determine the CP type of the third signal is the same as that for the terminal-side device to determine the CP type of the third signal, which will not be elaborated here.

[0282] Optionally, changing the CP type of the signal from the third CP type to the fourth CP type includes:

[0283] When a preset condition is met, changing the CP type of the signal from the third CP type to the fourth CP type;

[0284] Wherein, the preset condition includes at least one of the following:

[0285] The measurement value of the reference signal corresponding to the third CP type is less than or equal to the first threshold;

[0286] The measurement value of a group of reference signals associated with the third CP type is less than or equal to the second threshold;

[0287] The measurement value of the reference signal corresponding to the fourth CP type is greater than or equal to the measurement value of the reference signal corresponding to the third CP type;

[0288] The function of the measurement value Y of the measurement value of the reference signal corresponding to the fourth CP type and the measurement value of the reference signal corresponding to the third CP type meets certain conditions;

[0289] The change value of the terminal TA value at two moments is greater than or equal to the third threshold;

[0290] The change value of the terminal location information at two moments is greater than or equal to the fourth threshold;

[0291] The terminal switches the transmission and reception point TRP or TRP group;

[0292] The terminal switches the reference signal or reference signal group;

[0293] The terminal switches the TAG;

[0294] The terminal switches the BWP;

[0295] Terminal switching intelligent metasurface device;

[0296] The signals received or sent by the terminal are transmitted through the RIS;

[0297] The terminal switches from the terrestrial network TN to the non-terrestrial network NTN;

[0298] The terminal switches satellites;

[0299] The terminal receives indication information for indicating a CP type switch;

[0300] The delay spread estimated or obtained by the terminal is greater than or equal to the fifth threshold.

[0301] Optionally, the reference signal includes at least one of the following:

[0302] A signal for channel information measurement;

[0303] A signal for time-frequency estimation;

[0304] A reference signal for positioning;

[0305] A signal dedicated to CP or CP group selection or reselection or switching;

[0306] A signal dedicated to TRP or TRP group selection or reselection or switching;

[0307] A signal module containing a synchronization signal or a broadcast signal;

[0308] Sounding reference signal;

[0309] Physical random access signal;

[0310] Wake-up signal;

[0311] Uplink control channel or signal;

[0312] Uplink shared data channel or signal.

[0313] Optionally, through at least one of the above sounding reference signal, physical random access signal, wake-up signal, uplink control channel or signal, uplink shared data channel or signal, the network-side device can measure and then determine whether to switch the CP type of a certain channel.

[0314] The method of the embodiment of the present application further includes:

[0315] Indicating the TA offset corresponding to different CP types.

[0316] As an implementation manner, the indicating the TA offset corresponding to different CP types includes at least one of the following:

[0317] Indicate the TA offset corresponding to different CP types through a first parameter;

[0318] Indicate the offset value of the TA offset corresponding to different CP types relative to the TA offset of a preset CP type through a second parameter.

[0319] As an implementation manner, the indicating the TA offset corresponding to different CP types includes:

[0320] Indicate a target TA offset, where the target TA offset is applicable to all CP types or a specific CP type.

[0321] Optionally, in the case of indicating a target TA offset, the terminal determines that the TA offsets of other CP types except the specific CP type are default values.

[0322] In the embodiments of the present application, the network-side device performs a second operation, and the second operation includes at least one of the following: associating a first signal of a first cyclic prefix CP type with a second signal of a second CP type; determining the CP type of a third signal, where the third signal includes a signal in a random access process; changing the CP type of a signal from a third CP type to a fourth CP type. The above solution achieves the purpose of signal association based on the CP type, determining the CP type of the signal in the random access process, and / or switching the CP type of the signal, so that communication processing can be performed based on the signal corresponding to the corresponding CP type, and thus communication reliability can be effectively provided.

[0323] For the cyclic prefix type processing method provided in the embodiments of the present application, the execution subject may be a cyclic prefix type processing device. In the embodiments of the present application, taking the cyclic prefix type processing device executing the cyclic prefix type processing method as an example, the cyclic prefix type processing device provided in the embodiments of the present application is described.

[0324] As Figure 6 shown, the embodiments of the present application further provide a cyclic prefix type processing device 600, including:

[0325] A first processing module 601, configured to perform a first operation, and the first operation includes at least one of the following:

[0326] Associate a first signal of a first cyclic prefix CP type with a second signal of a second CP type;

[0327] Determine the CP type of a third signal, where the third signal includes a signal in a random access process;

[0328] Determine the TA offset corresponding to different CP types;

[0329] Change the CP type of the signal from the third CP type to the fourth CP type.

[0330] Optionally, the first signal includes at least one of the following:

[0331] Synchronization signal / Physical Broadcast Channel signal block SSB;

[0332] Channel State Information Reference Signal CSI-RS;

[0333] Sounding Reference Signal SRS;

[0334] Physical Random Access Channel PRACH;

[0335] Wake-up signal.

[0336] Optionally, the second signal includes at least one of the following:

[0337] CSI-RS;

[0338] PRACH;

[0339] Physical Uplink Shared Channel PUSCH;

[0340] SRS;

[0341] Wake-up signal;

[0342] Positioning Reference Signal PRS.

[0343] Optionally, the first signal and the second signal satisfy at least one of the following:

[0344] Corresponding to different signal indexes;

[0345] Corresponding to different signal index groups;

[0346] Two independently configured signals;

[0347] Corresponding to different time units;

[0348] Corresponding to different frequency domain units;

[0349] Corresponding to different serving cells;

[0350] Corresponding to different carriers;

[0351] Corresponding to different bandwidths;

[0352] Corresponding to different subbands;

[0353] Corresponding to different subcarrier spacings.

[0354] Optionally, the device according to the embodiment of the present application further includes:

[0355] A determination module, configured to determine the validity of the timing advance TA for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

[0356] Optionally, the determination module includes:

[0357] A first determination sub-module, configured to determine a corresponding measurement quantity change threshold according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal;

[0358] A second determination sub-module, configured to determine the validity of the TA for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the relationship between the measurement quantity of the measurement signal and the measurement quantity change threshold.

[0359] Optionally, the determination module is configured to determine the validity of the timing advance TA for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal, and the measurement signal;

[0360] wherein, the CP type of the measurement signal is associated with the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

[0361] Optionally, the measurement quantity change threshold includes at least one of the following: the RSRP change threshold of the downlink signal, the round-trip delay RTT change threshold, the transmission delay change threshold, and the terminal position change threshold.

[0362] Optionally, the first processing module is configured to determine the CP type of the third signal according to at least one of the following;

[0363] The type of the reference signal selected by the terminal and associated with the target signal, where the target signal includes at least one of Message 1 Msg1, Message A MsgA, and the PUSCH without a random access channel RACH-less procedure;

[0364] The frequency band or synchronization raster where the reference signal selected by the terminal and associated with the target signal is located;

[0365] The position of the terminal;

[0366] The default value;

[0367] The timing advance group TAG identifier;

[0368] The random access type;

[0369] The CP type specified by the network;

[0370] CP type of the previous transmission assumption;

[0371] Size of TA.

[0372] Optionally, the third signal includes at least one of the following:

[0373] Msg1, MsgA, PUSCH of RACH-less procedure, Msg2, Msg3, Msg4, MsgB, feedback message of PUSCH of RACH-less procedure, PDCCH scheduled by PUSCH of RACH-less procedure.

[0374] Optionally, the first processing module is used to perform at least one of the following:

[0375] Determine the TA offset corresponding to different CP types according to the first TA offset table, where the first TA offset table includes TA offsets corresponding to at least two CP types;

[0376] Determine the TA offset corresponding to different CP types according to the second TA offset table, where the second TA offset table includes offset values of TA offsets corresponding to at least two CP types relative to the reference TA offset;

[0377] Determine the TA offset corresponding to different CP types according to the third TA offset table, where each third TA offset table corresponds to a default value of the TA offset corresponding to one CP type;

[0378] Determine the TA offset corresponding to different CP types according to the function of the TA offset corresponding to the preset CP type or the reference TA offset;

[0379] Determine the TA offset corresponding to different CP types according to the TA offset indicated by the network.

[0380] Optionally, the first processing module is used to change the CP type of the signal from the third CP type to the fourth CP type when a preset condition is met;

[0381] Wherein, the preset condition includes at least one of the following:

[0382] The measurement of the reference signal corresponding to the third CP type is less than or equal to the first threshold;

[0383] The measurement of a group of reference signals associated with the third CP type is less than or equal to the second threshold;

[0384] The measurement of the reference signal corresponding to the fourth CP type is greater than or equal to the measurement of the reference signal corresponding to the third CP type;

[0385] The measured value of the measurement quantity of the reference signal corresponding to the fourth CP type and the function of the measurement quantity of the reference signal corresponding to the third CP type satisfy certain conditions;

[0386] The change value of the terminal TA value at two moments is greater than or equal to the third threshold;

[0387] The change value of the terminal location information at two moments is greater than or equal to the fourth threshold;

[0388] The terminal switches the transmission and reception point TRP or TRP group;

[0389] The terminal switches the reference signal or reference signal group;

[0390] The terminal switches the TAG;

[0391] The terminal switches the BWP;

[0392] The terminal switches the intelligent metasurface device RIS;

[0393] The signal received or sent by the terminal is transmitted through the RIS;

[0394] The terminal switches from the terrestrial network TN to the non-terrestrial network NTN;

[0395] The terminal switches the satellite;

[0396] The terminal receives indication information for indicating a CP type switch;

[0397] The delay spread estimated or obtained by the terminal is greater than or equal to the fifth threshold.

[0398] Optionally, the reference signal includes at least one of the following:

[0399] A signal for channel information measurement;

[0400] A signal for time-frequency estimation;

[0401] A reference signal for positioning;

[0402] A signal dedicated to CP or CP group selection or reselection or switching;

[0403] A signal dedicated to TRP or TRP group selection or reselection or switching;

[0404] A signal module containing a synchronization signal or a broadcast signal.

[0405] In an embodiment of the present application, a first operation is performed. The first operation includes at least one of the following: associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type; determining the CP type of a third signal, where the third signal includes a signal in a random access process; determining TA offsets corresponding to different CP types; and changing the CP type of a signal from a third CP type to a fourth CP type. The above solution achieves the purpose of signal association based on the CP type, determining the CP type of a signal in a random access process, determining TA offsets corresponding to different CP types, and / or switching the CP type of a signal, so that communication processing can be performed based on signals corresponding to the respective CP types, effectively avoiding resource waste and inter-symbol interference caused by too short a CP. Alternatively, the TA offset can be determined based on the corresponding CP type to compensate for the appropriate uplink and downlink time differences, and thus communication reliability can be effectively provided.

[0406] As Figure 7 shown, an embodiment of the present application further provides a cyclic prefix type processing apparatus 700, including:

[0407] A second processing module 700, configured to perform a second operation. The second operation includes at least one of the following:

[0408] Associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0409] Determining the CP type of a third signal, where the third signal includes a signal in a random access process;

[0410] When a preset condition is satisfied, changing the CP type of a signal from a third CP type to a fourth CP type.

[0411] Optionally, the first signal includes at least one of the following:

[0412] Synchronization signal / Physical broadcast channel signal block (SSB);

[0413] Channel state information reference signal (CSI-RS);

[0414] Sounding reference signal (SRS);

[0415] Physical random access channel (PRACH);

[0416] Wake-up signal.

[0417] Optionally, the second signal includes at least one of the following:

[0418] CSI-RS;

[0419] PRACH;

[0420] Physical Uplink Shared Channel PUSCH;

[0421] SRS;

[0422] Wake-up signal;

[0423] Positioning Reference Signal PRS.

[0424] Optionally, the first signal and the second signal satisfy at least one of the following:

[0425] Corresponding to different signal indexes;

[0426] Corresponding to different signal index groups;

[0427] Two independently configured signals;

[0428] Corresponding to different time units;

[0429] Corresponding to different frequency domain units;

[0430] Corresponding to different serving cells;

[0431] Corresponding to different carriers;

[0432] Corresponding to different bandwidths;

[0433] Corresponding to different subbands;

[0434] Corresponding to different subcarrier spacings.

[0435] Optionally, the second processing module is used to determine the CP type of the third signal according to at least one of the following:

[0436] The type of reference signal associated with the target signal selected by the terminal, where the target signal includes at least one of Message 1 Msg1, Message A MsgA, and PUSCH without a Random Access Channel RACH-less process;

[0437] The frequency band or synchronization grid where the reference signal associated with the target signal selected by the terminal is located;

[0438] The location of the terminal;

[0439] Default value;

[0440] Time Advance Group TAG identifier;

[0441] Random access type;

[0442] The CP type specified by the network;

[0443] The CP type assumed in the previous transmission;

[0444] The size of the TA.

[0445] Optionally, the third signal includes at least one of the following:

[0446] Msg1, MsgA, PUSCH in a RACH-less process, Msg2, Msg3, Msg4, MsgB, feedback message of PUSCH in a RACH-less process, PDCCH scheduled by PUSCH in a RACH-less process.

[0447] Optionally, the preset condition includes at least one of the following:

[0448] The measurement of the reference signal corresponding to the third CP type is less than or equal to the first threshold;

[0449] The measurement of a set of reference signals associated with the third CP type is less than or equal to the second threshold;

[0450] The measurement of the reference signal corresponding to the fourth CP type is greater than or equal to the measurement of the reference signal corresponding to the third CP type;

[0451] The measurement value Y of the measurement of the reference signal corresponding to the fourth CP type and the function of the measurement of the reference signal corresponding to the third CP type satisfy certain conditions;

[0452] The change value of the terminal TA value at two moments is greater than or equal to the third threshold;

[0453] The change value of the terminal location information at two moments is greater than or equal to the fourth threshold;

[0454] The terminal switches the transmission and reception point TRP or TRP group;

[0455] The terminal switches the reference signal or reference signal group;

[0456] The terminal switches the TAG;

[0457] The terminal switches the BWP;

[0458] The terminal switches the intelligent metasurface device;

[0459] The signal received or transmitted by the terminal is transmitted through the RIS;

[0460] The terminal switches from the terrestrial network TN to the non-terrestrial network NTN;

[0461] The terminal switches the satellite;

[0462] The terminal receives indication information for indicating a CP type switch;

[0463] The delay spread estimated or obtained by the terminal is greater than or equal to the fifth threshold.

[0464] Optionally, the reference signal includes at least one of the following:

[0465] A signal for channel information measurement;

[0466] A signal for time-frequency estimation;

[0467] A reference signal for positioning;

[0468] A signal dedicated to CP or CP group selection, reselection, or handover;

[0469] A signal dedicated to TRP or TRP group selection, reselection, or handover;

[0470] A signal module containing a synchronization signal or a broadcast signal;

[0471] A sounding reference signal;

[0472] A physical random access signal;

[0473] A wake-up signal;

[0474] An uplink control channel or signal;

[0475] An uplink shared data channel or signal.

[0476] The device according to the embodiment of the present application further includes:

[0477] An indication module for indicating the TA offset corresponding to different CP types.

[0478] Optionally, the indication module is used to perform at least one of the following:

[0479] Indicate the TA offset corresponding to different CP types through a first parameter;

[0480] Indicate the offset value of the TA offset corresponding to different CP types relative to the TA offset of a preset CP type through a second parameter.

[0481] Optionally, the indication module is used to indicate a target TA offset, and the target TA offset is applicable to all CP types or a specific CP type.

[0482] In an embodiment of the present application, a second operation is performed. The second operation includes at least one of the following: associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type; determining the CP type of a third signal, where the third signal includes a signal in a random access process; changing the CP type of a signal from a third CP type to a fourth CP type. The above solution achieves the purpose of signal association based on the CP type, determining the CP type of a signal in a random access process, and / or switching the CP type of a signal, so that communication processing can be performed based on the signal corresponding to the corresponding CP type, thereby effectively providing communication reliability.

[0483] The processing device for the cyclic prefix type in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than a terminal. Exemplarily, the terminal may include, but is not limited to, the types of the above-mentioned terminal 11, and other devices may be a server, a network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0484] The processing device for the cyclic prefix type provided in the embodiment of the present application can implement Figures 4 to 5 the various processes implemented by the method embodiments and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0485] Optionally, as Figure 8 shown, the embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802. A program or instruction that can run on the processor 801 is stored on the memory 802. For example, when the communication device 800 is a terminal, when the program or instruction is executed by the processor 801, it implements the various steps of the processing method embodiment of the cyclic prefix type executed by the above terminal and can achieve the same technical effects. When the communication device 800 is a network-side device, when the program or instruction is executed by the processor 801, it implements the various steps of the processing method embodiment of the cyclic prefix type and can achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0486] The embodiment of the present application further provides a terminal, including a processor and a communication interface. The processor is used to perform a first operation. The first operation includes at least one of the following:

[0487] associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0488] determining the CP type of a third signal, where the third signal includes a signal in a random access process;

[0489] Determine the TA offset corresponding to different CP types;

[0490] Change the CP type of the signal from the third CP type to the fourth CP type. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation method of the above method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 9 It is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0491] The terminal 900 includes but is not limited to at least some components such as a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, and a processor 910.

[0492] Those skilled in the art can understand that the terminal 900 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 910 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 9 The terminal structure shown does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0493] It should be understood that in the embodiments of the present application, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042. The graphics processor 9041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. The other input devices 9072 may include but are not limited to a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0494] In the embodiments of the present application, after the radio frequency unit 901 receives downlink data from a network-side device, it can be transmitted to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network-side device. Generally, the radio frequency unit 901 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0495] The memory 909 can be used to store software programs or instructions as well as various data. The memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 909 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 (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 909 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0496] The processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 910 either.

[0497] Among them, the processor 910 is used to execute a first operation, and the first operation includes at least one of the following:

[0498] Associate a first signal of a first cyclic prefix CP type with a second signal of a second CP type;

[0499] Determine the CP type of a third signal, where the third signal includes a signal in a random access process;

[0500] Determine the TA offset corresponding to different CP types;

[0501] Change the CP type of the signal from the third CP type to the fourth CP type.

[0502] Optionally, the first signal includes at least one of the following:

[0503] Synchronization signal / Physical Broadcast Channel signal block SSB;

[0504] Channel State Information Reference Signal CSI-RS;

[0505] Sounding Reference Signal SRS;

[0506] Physical Random Access Channel PRACH;

[0507] Wake-up signal.

[0508] Optionally, the second signal includes at least one of the following:

[0509] CSI-RS;

[0510] PRACH;

[0511] Physical Uplink Shared Channel PUSCH;

[0512] SRS;

[0513] Wake-up signal;

[0514] Positioning Reference Signal PRS.

[0515] Optionally, the first signal and the second signal satisfy at least one of the following:

[0516] Correspond to different signal indexes;

[0517] Correspond to different signal index groups;

[0518] Two independently configured signals;

[0519] Correspond to different time units;

[0520] Correspond to different frequency domain units;

[0521] Correspond to different serving cells;

[0522] Correspond to different carriers;

[0523] Correspond to different bandwidths;

[0524] Correspond to different subbands;

[0525] Correspond to different subcarrier spacings.

[0526] Optionally, the processor 910 is further configured to:

[0527] Determine the validity of the time advance TA for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

[0528] Optionally, the processor 910 is further configured to:

[0529] Determine the corresponding measurement quantity change threshold according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal;

[0530] Determine the validity of the TA for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the relationship between the measurement quantity of the measurement signal and the measurement quantity change threshold.

[0531] Optionally, the processor 910 is further configured to:

[0532] Determine the validity of the time advance TA for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal, and the measurement signal;

[0533] Wherein, the CP type of the measurement signal is associated with the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

[0534] Optionally, the measurement quantity change threshold includes at least one of the following: the RSRP change threshold of the downlink signal, the round-trip delay RTT change threshold, the transmission delay change threshold, and the terminal position change threshold.

[0535] Optionally, the processor 910 is further configured to:

[0536] Determine the CP type of the third signal according to at least one of the following:

[0537] The type of the reference signal associated with the target signal selected by the terminal, where the target signal includes at least one of Message 1 Msg1, Message A MsgA, and the PUSCH without a random access channel RACH-less procedure;

[0538] The frequency band or synchronization grid where the reference signal associated with the target signal selected by the terminal is located;

[0539] The position of the terminal;

[0540] The default value;

[0541] The time advance group TAG identifier;

[0542] Random access type;

[0543] CP type specified by the network;

[0544] CP type assumed for the previous transmission;

[0545] Size of the TA.

[0546] Optionally, the third signal includes at least one of the following:

[0547] Msg1, MsgA, PUSCH of the RACH-less process, Msg2, Msg3, Msg4, MsgB, feedback message of the PUSCH of the RACH-less process, PDCCH scheduled by the PUSCH of the RACH-less process.

[0548] Optionally, the processor 910 is further configured to perform at least one of the following:

[0549] Determine the TA offset corresponding to different CP types according to the first TA offset table, where the first TA offset table includes TA offsets corresponding to at least two CP types;

[0550] Determine the TA offset corresponding to different CP types according to the second TA offset table, where the second TA offset table includes offset values of TA offsets corresponding to at least two CP types relative to a reference TA offset;

[0551] Determine the TA offset corresponding to different CP types according to the third TA offset table, where each third TA offset table corresponds to a default value of the TA offset corresponding to one CP type;

[0552] Determine the TA offset corresponding to different CP types according to a function of the TA offset corresponding to the preset CP type or the reference TA offset;

[0553] Determine the TA offset corresponding to different CP types according to the TA offset indicated by the network.

[0554] Optionally, the preset condition includes at least one of the following:

[0555] The measurement of the reference signal corresponding to the third CP type is less than or equal to the first threshold;

[0556] The measurement of a group of reference signals associated with the third CP type is less than or equal to the second threshold;

[0557] The measurement of the reference signal corresponding to the fourth CP type is greater than or equal to the measurement of the reference signal corresponding to the third CP type;

[0558] The measured value of the measurement quantity of the reference signal corresponding to the fourth CP type and the function of the measurement quantity of the reference signal corresponding to the third CP type satisfy certain conditions;

[0559] The change value of the terminal TA value at two moments is greater than or equal to the third threshold;

[0560] The change value of the terminal position information at two moments is greater than or equal to the fourth threshold;

[0561] The terminal switches the transmission and reception point TRP or the TRP group;

[0562] The terminal switches the reference signal or the reference signal group;

[0563] The terminal switches the TAG;

[0564] The terminal switches the BWP;

[0565] The terminal switches the intelligent metasurface device RIS;

[0566] The signal received or sent by the terminal is transmitted through the RIS;

[0567] The terminal switches from the terrestrial network TN to the non-terrestrial network NTN;

[0568] The terminal switches the satellite;

[0569] The terminal receives indication information for indicating a CP type switch;

[0570] The delay spread estimated or obtained by the terminal is greater than or equal to the fifth threshold.

[0571] Optionally, the reference signal includes at least one of the following:

[0572] A signal for channel information measurement;

[0573] A signal for time-frequency estimation;

[0574] A reference signal for positioning;

[0575] A signal dedicated to CP or CP group selection or reselection or switching;

[0576] A signal dedicated to TRP or TRP group selection or reselection or switching;

[0577] A signal module containing a synchronization signal or a broadcast signal.

[0578] In the embodiments of the present application, the terminal performs a first operation, and the first operation includes at least one of the following: associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type; determining the CP type of a third signal, where the third signal includes a signal in a random access process; determining TA offsets corresponding to different CP types; and changing the CP type of a signal from a third CP type to a fourth CP type. The above solution achieves the purpose of signal association based on the CP type, determining the CP type of a signal in a random access process, determining TA offsets corresponding to different CP types, and / or switching the CP type of a signal, so that communication processing can be performed based on signals corresponding to the respective CP types, effectively avoiding resource waste and inter-symbol interference caused by an overly short CP. Or, the TA offset can be determined based on the corresponding CP type to compensate for the appropriate uplink and downlink time differences, and thus communication reliability can be effectively provided.

[0579] The embodiments of the present application further provide a network-side device, including a processor and a communication interface. The processor is used to perform a second operation, and the second operation includes at least one of the following:

[0580] Associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type;

[0581] Determining the CP type of a third signal, where the third signal includes a signal in a random access process;

[0582] Changing the CP type of a signal from a third CP type to a fourth CP type. This embodiment of the network-side device corresponds to the above method embodiment of the network-side device. Each implementation process and manner of the above method embodiment can be applied to this embodiment of the network-side device and can achieve the same technical effect.

[0583] Specifically, the embodiments of the present application further provide a network-side device. As Figure 10 shown, the network-side device 1000 includes: an antenna 101, a radio frequency device 102, a baseband device 103, a processor 104, and a memory 105. The antenna 101 is connected to the radio frequency device 102. In the uplink direction, the radio frequency device 102 receives information through the antenna 101 and sends the received information to the baseband device 103 for processing. In the downlink direction, the baseband device 103 processes the information to be sent and sends it to the radio frequency device 102. The radio frequency device 102 processes the received information and then sends it out through the antenna 101.

[0584] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 103, and the baseband device 103 includes a baseband processor.

[0585] The baseband device 103 may, for example, include at least one baseband board, and a plurality of chips are provided on the baseband board, such asFigure 10 As shown, one of the chips, for example, a baseband processor, is connected to the memory 105 through a bus interface to call the program in the memory 105 and execute the operations of the network device shown in the above method embodiments.

[0586] The network-side device may further include a network interface 106, which is, for example, a Common Public Radio Interface (CPRI).

[0587] Specifically, the network-side device 1000 in the embodiments of the present application further includes: instructions or programs stored on the memory 105 and executable on the processor 104. The processor 104 calls the instructions or programs in the memory 105 to execute Figure 7 the methods executed by the modules shown, and achieves the same technical effects. To avoid repetition, they will not be elaborated here.

[0588] The embodiments of the present application further provide a readable storage medium, on which programs or instructions are stored. When the programs or instructions are executed by a processor, the various processes of the above method embodiments for processing the cyclic prefix type are implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0589] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0590] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above method embodiments for processing the cyclic prefix type, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0591] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0592] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above method embodiments for processing the cyclic prefix type, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0593] The embodiment of the present application further provides a cyclic prefix type processing system, including: a terminal and a network side device. The terminal can be used to execute the steps of the cyclic prefix type processing method executed by the terminal as described above, and the network side device can be used to execute the steps of the cyclic prefix type processing method executed by the network side device as described above.

[0594] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including that 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 a reverse 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 be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0595] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, they can also be implemented by hardware. This computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing the terminal or the network side device to execute the methods described in various embodiments of the present application.

[0596] The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit and scope protected by the claims of the present application, can also make many forms of embodiments, and these embodiments are all within the protection scope of the present application.

Claims

1. A processing method for a cyclic prefix type, characterized in that, Including: The terminal performs a first operation, and the first operation includes at least one of the following: Associating a first signal of a first cyclic prefix (CP) type with a second signal of a second CP type; Determining the CP type of a third signal, where the third signal includes a signal in a random access procedure; Determining TA offsets corresponding to different CP types; Changing the CP type of a signal from a third CP type to a fourth CP type.

2. The method according to claim 1, wherein The first signal includes at least one of the following: Synchronization signal / Physical Broadcast Channel signal block (SSB); Channel State Information Reference Signal (CSI-RS); Sounding Reference Signal (SRS); Physical Random Access Channel (PRACH); Wake-up signal.

3. The method according to claim 1 or 2, characterized in that, The second signal includes at least one of the following: CSI-RS; PRACH; Physical Uplink Shared Channel (PUSCH); SRS; Wake-up signal; Positioning Reference Signal (PRS).

4. The method according to any one of claims 1 to 3, characterized in that, The first signal and the second signal satisfy at least one of the following: Corresponding to different signal indexes; Corresponding to different signal index groups; Two independently configured signals; Corresponding to different time units; Corresponding to different frequency domain units; Corresponding to different serving cells; Corresponding to different carriers; Corresponding to different bandwidths; Corresponding to different subbands; Corresponding to different subcarrier spacings.

5. The method according to any one of claims 1 to 4, characterized in that Also including: Determining the validity of the Time Advance (TA) for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

6. The method according to claim 5, wherein Determining the validity of the TA for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal includes: Determining a corresponding measurement quantity change threshold according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal; Determining the validity of the TA for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the relationship between the measurement quantity of the measurement signal and the measurement quantity change threshold.

7. The method according to claim 5, characterized in that, The determining the validity of the Time Advance (TA) for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal includes: Determining the validity of the Time Advance (TA) for PUSCH transmission, SRS transmission, or wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal, and the measurement signal; Wherein, the CP type of the measurement signal is associated with the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

8. The method according to claim 6, wherein The measurement quantity change threshold includes at least one of the following: RSRP change threshold of a downlink signal, Round-Trip Time (RTT) change threshold, transmission delay change threshold, terminal position change threshold.

9. The method according to claim 1, characterized in that, The determining the CP type of the third signal includes: Determining the CP type of the third signal according to at least one of the following; The type of reference signal associated with the target signal selected by the terminal, where the target signal includes at least one of Message 1 (Msg1), Message A (MsgA), and PUSCH in a RACH-less procedure; The frequency band or synchronization raster where the reference signal associated with the target signal selected by the terminal is located; The location of the terminal; The default value; The Time Advance Group (TAG) identifier; The random access type; The CP type specified by the network; The CP type assumed for the previous transmission; The size of the TA.

10. The method according to claim 9, characterized in that The third signal includes at least one of the following: Msg1, MsgA, PUSCH in a RACH-less procedure, Msg2, Msg3, Msg4, MsgB, the feedback message of PUSCH in a RACH-less procedure, the PDCCH scheduled by PUSCH in a RACH-less procedure.

11. The method according to claim 1, wherein Determine the TA offset corresponding to different CP types, including at least one of the following: Determine the TA offset corresponding to different CP types according to the first TA offset table, where the first TA offset table includes the TA offsets corresponding to at least two CP types; Determine the TA offset corresponding to different CP types according to the second TA offset table, where the second TA offset table includes the offset values of the TA offsets corresponding to at least two CP types relative to the reference TA offset; Determine the TA offset corresponding to different CP types according to the third TA offset table, where each third TA offset table corresponds to the default value of the TA offset corresponding to one CP type; Determine the TA offset corresponding to different CP types according to the function of the TA offset corresponding to the preset CP type or the reference TA offset; Determine the TA offset corresponding to different CP types according to the TA offset indicated by the network.

12. The method according to claim 1, wherein Changing the CP type of the signal from the third CP type to the fourth CP type includes: Under the condition of meeting the preset conditions, changing the CP type of the signal from the third CP type to the fourth CP type; Wherein, the preset conditions include at least one of the following: The measurement of the reference signal corresponding to the third CP type is less than or equal to the first threshold; The measurement of a group of reference signals associated with the third CP type is less than or equal to the second threshold; The measurement of the reference signal corresponding to the fourth CP type is greater than or equal to the measurement of the reference signal corresponding to the third CP type; The function of the measurement value of the reference signal corresponding to the fourth CP type and the measurement of the reference signal corresponding to the third CP type satisfies certain conditions; The change value of the terminal TA value at two moments is greater than or equal to the third threshold; The change value of the terminal location information at two moments is greater than or equal to the fourth threshold; The terminal switches the Transmission and Reception Point (TRP) or TRP group; The terminal switches the reference signal or reference signal group; The terminal switches the TAG; The terminal switches the Bandwidth Part (BWP); The terminal switches the Reconfigurable Intelligent Surface (RIS) device; The signal received or transmitted by the terminal is transmitted through the RIS; The terminal switches from the Terrestrial Network (TN) to the Non-Terrestrial Network (NTN); The terminal switches the satellite; The terminal receives an indication message for indicating to perform the CP type switch; The delay spread estimated or obtained by the terminal is greater than or equal to a fifth threshold.

13. The method according to claim 12, wherein The reference signal includes at least one of the following: A signal for channel information measurement; A signal for time-frequency estimation; A reference signal for positioning; A signal dedicated to CP or CP group selection or reselection or handover; A signal dedicated to TRP or TRP group selection or reselection or handover; A signal module including a synchronization signal or a broadcast signal.

14. A processing method for a cyclic prefix type, characterized in that, Includes: The network-side device performs a second operation, and the second operation includes at least one of the following: Associating a first signal of a first cyclic prefix CP type with a second signal of a second CP type; Determining the CP type of a third signal, where the third signal includes a signal in a random access procedure; Changing the CP type of a signal from a third CP type to a fourth CP type.

15. The method according to claim 14, wherein The first signal includes at least one of the following: Synchronization signal / physical broadcast channel signal block SSB; Channel state information reference signal CSI-RS; Sounding reference signal SRS; Physical random access channel PRACH; Wake-up signal.

16. The method according to claim 14 or 15, characterized in that, The second signal includes at least one of the following: CSI-RS; PRACH; Physical uplink shared channel PUSCH; SRS; Wake-up signal; Positioning reference signal PRS.

17. The method according to any one of claims 14 to 16, characterized in that The first signal and the second signal satisfy at least one of the following: Corresponding to different signal indexes; Corresponding to different signal index groups; Two independently configured signals; Corresponding to different time units; Corresponding to different frequency domain units; Corresponding to different serving cells; Corresponding to different carriers; Corresponding to different bandwidths; Corresponding to different subbands; Corresponding to different subcarrier intervals.

18. The method according to claim 14, wherein The determining the CP type of the third signal includes: Determining the CP type of the third signal according to at least one of the following: The type of the reference signal associated with the target signal selected by the terminal, where the target signal includes at least one of message 1 Msg1, message A MsgA, and PUSCH in a random access channel RACH-less procedure; The frequency band or synchronization raster where the reference signal associated with the target signal selected by the terminal is located; The location of the terminal; Default value; Time advance group TAG identifier; Random access type; CP type specified by the network; CP type assumed in the previous transmission; The size of TA.

19. The method according to claim 18, wherein The third signal includes at least one of the following: Msg1, MsgA, PUSCH in a RACH-less procedure, Msg2, Msg3, Msg4, MsgB, feedback message of PUSCH in a RACH-less procedure, PDCCH scheduled by PUSCH in a RACH-less procedure.

20. The method according to claim 14, wherein The changing the CP type of a signal from a third CP type to a fourth CP type includes: Changing the CP type of a signal from a third CP type to a fourth CP type when a preset condition is satisfied; Wherein, the preset condition includes at least one of the following: The measurement of the reference signal corresponding to the third CP type is less than or equal to a first threshold; The measurement of a group of reference signals associated with the third CP type is less than or equal to a second threshold. The measurement quantity of the reference signal corresponding to the fourth CP type is greater than or equal to the measurement quantity of the reference signal corresponding to the third CP type; The measured value Y of the measurement quantity of the reference signal corresponding to the fourth CP type and the function of the measurement quantity of the reference signal corresponding to the third CP type satisfy certain conditions; The change value of the terminal TA value at two moments is greater than or equal to the third threshold; The change value of the terminal location information at two moments is greater than or equal to the fourth threshold; The terminal switches the transmission and reception point TRP or TRP group; The terminal switches the reference signal or reference signal group; The terminal switches the TAG; The terminal switches the BWP; The terminal switches the intelligent metasurface device; The signal received or sent by the terminal is transmitted through the RIS; The terminal switches from the terrestrial network TN to the non-terrestrial network NTN; The terminal switches the satellite; The terminal receives indication information for indicating a CP type switch; The delay spread estimated or obtained by the terminal is greater than or equal to the fifth threshold.

21. The method according to claim 20, characterized in that, The reference signal includes at least one of the following: The signal for channel information measurement; The signal for time-frequency estimation; The reference signal for positioning; The signal dedicated to CP or CP group selection or reselection or switching; The signal dedicated to TRP or TRP group selection or reselection or switching; The signal module including the synchronization signal or broadcast signal; The sounding reference signal; The physical random access signal; The wake-up signal; The uplink control channel or signal; The uplink shared data channel or signal.

22. The method according to claim 14, wherein It also includes: Indicating the TA offset corresponding to different CP types.

23. The method according to claim 22, wherein The indication of the TA offset corresponding to different CP types includes at least one of the following: Indicating the TA offset corresponding to different CP types through the first parameter; Indicating the offset value of the TA offset corresponding to different CP types relative to the TA offset of the preset CP type through the second parameter.

24. The method according to claim 22 or 23, characterized in that The indication of the TA offset corresponding to different CP types includes: Indicating a target TA offset applicable to all CP types or a specific CP type.

25. A processing device for a cyclic prefix type, characterized in that, It includes: The first processing module is used to perform the first operation, and the first operation includes at least one of the following: Associating the first signal of the first cyclic prefix CP type with the second signal of the second CP type; Determining the CP type of the third signal, where the third signal includes the signal in the random access process; Determining the TA offset corresponding to different CP types; Changing the CP type of the signal from the third CP type to the fourth CP type.

26. The device according to claim 25, characterized in that, The first signal includes at least one of the following: Synchronization signal / physical broadcast channel signal block SSB; Channel state information reference signal CSI-RS; Sounding reference signal SRS; Physical random access channel PRACH; Wake-up signal.

27. The device according to claim 25 or 26, characterized in that, The second signal includes at least one of the following: CSI-RS; PRACH; Physical uplink shared channel PUSCH; SRS; Wake-up signal; Positioning reference signal PRS.

28. The device according to any one of claims 25 to 27, characterized in that, The first signal and the second signal satisfy at least one of the following: Corresponding to different signal indexes; Corresponding to different signal index groups; Two independently configured signals; Corresponding to different time units; Corresponding to different frequency domain units; Corresponding to different serving cells; corresponding to different carriers; corresponding to different bandwidths; corresponding to different sub-bands; corresponding to different sub-carrier intervals.

29. The device according to any one of claims 25 to 28, characterized in that, It further includes: a determination module, configured to determine the validity of the time advance TA for PUSCH transmission or for SRS transmission or for wake-up signal transmission according to the CP type of the PUSCH, the CP type of the SRS, or the CP type of the wake-up signal.

30. A processing device for a cyclic prefix type, characterized in that, including: a second processing module, configured to perform a second operation, and the second operation includes at least one of the following: associating a first signal with a first cyclic prefix CP type to a second signal with a second CP type; determining the CP type of a third signal, where the third signal includes a signal in a random access procedure; changing the CP type of a signal from a third CP type to a fourth CP type.

31. The device according to claim 30, characterized in that, The first signal includes at least one of the following: synchronization signal / physical broadcast channel signal block SSB; channel state information reference signal CSI-RS; sounding reference signal SRS; physical random access channel PRACH; wake-up signal.

32. The device according to claim 30 or 31, characterized in that, The second signal includes at least one of the following: CSI-RS; PRACH; physical uplink shared channel PUSCH; SRS; wake-up signal; positioning reference signal PRS.

33. A terminal, characterized in that, 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 cyclic prefix type processing method described in any one of claims 1 to 13 are implemented.

34. A network-side device, characterized in that, 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 cyclic prefix type processing method described in any one of claims 14 to 24 are implemented.

35. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by the processor, the steps of the cyclic prefix type processing method described in any one of claims 1 to 13 are implemented, or the steps of the cyclic prefix type processing method described in any one of claims 14 to 24 are implemented.

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