FDSS parameter setting method, device, user equipment, and program

Abstract

The present application discloses a method, device, user equipment, and storage medium for configuring FDSS parameters, which belong to the field of communications technology. The FDSS parameter configuration method of an embodiment of the present application includes the steps of: a UE acquiring first information; and the UE dynamically switching or configuring FDSS-related parameters, which are parameters for performing uplink transmission based on the FDSS, based on the first information. The first information includes at least one of an association relationship between the FDSS-related parameters and the first parameters, which are parameters for performing uplink transmission, first indication information for indicating the FDSS-related parameters that need to be dynamically switched or configured, and signal measurement values ​​or signal statistics.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from a Chinese patent filed in China on January 16, 2023, bearing application number 202310085160.X, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of communication technology, and specifically to a method, apparatus, user equipment and storage medium for setting FDSS parameters. [Background technology]

[0003] In the communications field, frequency domain spectrum shaping (FDSS) is a spectrum shaping technique that can effectively reduce the signal's peak-to-average power ratio (PAPR), increase the signal's transmitted power, and improve the system's demodulation performance. However, the introduction of an FDSS filter reduces the transmitted power at the edges of the assigned frequency band, resulting in degradation of system performance.

[0004] Currently, spectrum extension (FDSS, also known as FDSS with spectrum extension) technology can be used to improve system performance. In uplink transmission based on FDSS, some extension physical resource blocks (PRBs) can be reserved for FDSS, which can adjust the waveform roll-off in the frequency domain and obtain a relatively smooth shaped waveform. This can achieve a favorable PAPR reduction effect and a favorable gain effect during modulation, thereby achieving the goal of improving system performance.

[0005] However, the gain achieved by FDSS varies depending on the modulation scheme and scheduling settings. Thus, how to configure FDSS to ensure system performance in different uplink transmission conditions / scenarios is an issue that needs to be resolved urgently. Summary of the Invention

[0006] The embodiments of the present application provide a method, device, user equipment, and storage medium for setting FDSS parameters, which can solve the problem of how to set FDSS parameters for uplink transmission under different conditions / scenes to ensure system performance in each scene.

[0007] In a first aspect, there is provided a method for configuring FDSS parameters, the method including the steps of: a user equipment (UE) acquiring first information; and the UE dynamically switching or setting FDSS-related parameters, which are parameters for performing uplink transmission based on the FDSS, based on the first information. The first information includes at least one of an association relationship between the FDSS-related parameters and the first parameters, which are parameters for performing uplink transmission, first indication information for indicating the FDSS-related parameters that need to be dynamically switched or set, and signal measurement values ​​or signal statistics.

[0008] In a second aspect, there is provided an FDSS parameter setting device including an acquisition module and an execution module. The acquisition module acquires first information. The execution module dynamically switches or sets FDSS-related parameters, which are parameters for performing uplink transmission based on the FDSS, based on the first information acquired by the acquisition module. The first information includes at least one of an association relationship between the FDSS-related parameters and the first parameters, which are parameters for performing uplink transmission, first indication information for indicating the FDSS-related parameters that need to be dynamically switched or set, and signal measurement values ​​or signal statistics.

[0009] In a third aspect, there is provided a UE comprising a processor and a memory, wherein the memory stores programs or commands executable by the processor, and wherein the programs or commands, when executed by the processor, implement the steps of the method according to the first aspect.

[0010] In a fourth aspect, there is provided a UE including: a processor for acquiring first information and dynamically switching or setting FDSS-related parameters, which are parameters for performing uplink transmission based on the FDSS, based on the first information, wherein the first information includes at least one of an association relationship between the FDSS-related parameters and the first parameters, which are parameters for performing uplink transmission, first indication information for indicating the FDSS-related parameters that need to be dynamically switched or set, and signal measurement values ​​or signal statistics.

[0011] In a fifth aspect, there is provided a readable storage medium having stored thereon a program or commands which, when executed by a processor, implement the steps of the method according to the first aspect.

[0012] In a sixth aspect, there is provided a chip comprising a processor for implementing the method according to the first aspect by executing a program or command, and a communication interface, the communication interface and the processor being coupled to each other.

[0013] In a seventh aspect, there is provided a computer program / program product stored on a storage medium, which, when executed by at least one processor, implements the steps of the FDSS parameter setting method described in the first aspect.

[0014] In an embodiment of the present application, the UE can dynamically switch or configure FDSS-related parameters for performing uplink transmission based on the FDSS based on first information, where the first information includes at least one of an association relationship between the FDSS-related parameters and the first parameters for performing uplink transmission, first instruction information for indicating FDSS-related parameters that need to be dynamically switched or configured, and signal measurement values ​​or signal statistics. In this technical solution, the UE can dynamically switch or configure some of the FDSS settings (i.e., FDSS-related parameters) by determining the FDSS-related parameters that are required for uplink transmission based on the association relationship between the FDSS-related parameters and the first parameters for uplink transmission, and / or can dynamically switch or configure some of the FDSS settings based on the FDSS-related parameters that need to be dynamically switched or configured that are explicitly indicated by the first instruction information, and / or can dynamically switch or configure some of the FDSS settings by obtaining FDSS-related parameters that can be used for uplink transmission from signal measurement values ​​or signal statistics, i.e., actual measurement or statistical conditions of some of the parameters of the signal. In this way, the UE can dynamically switch or set FDSS-related parameters for uplink transmission in each scenario, so that when uplink transmission is based on FDSS, the UE can adapt to uplink transmission in each scenario using the gain provided by FDSS, thereby effectively reducing the PAPR and achieving optimal system performance. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present application; [Figure 2] 1 is a schematic diagram of a spectrum shaping scheme based on reservation of idle PRBs provided by the related art; [Figure 3] 1 is a schematic diagram of a spectrum shaping scheme based on overlapping PRBs provided by the related art; [Figure 4]1 is a flowchart of a method for setting FDSS parameters provided by an embodiment of the present application. [Figure 5] 2 is a second flowchart of a method for setting FDSS parameters provided by an embodiment of the present application. [Figure 6] 1 is a schematic diagram of the structure of an FDSS parameter setting device provided by an embodiment of the present application; [Figure 7] FIG. 1 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the present application; [Figure 8] FIG. 2 is a schematic diagram of the hardware structure of a UE provided by an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. Based on the embodiments of the present application, all other embodiments that can be obtained by those skilled in the art without any creative efforts shall fall within the protection scope of the present application.

[0017] In the specification and claims of the embodiments of the present application, technical terms such as "first" and "second" are used to distinguish between different objects, not to describe a particular order of objects. Terms used in this manner may be interchangeable in some cases, allowing the embodiments of the present application to be performed in an order other than that shown or described herein. The objects distinguished by "first" and "second" are generally similar, and the number of objects is not limited; for example, the first object may be one or multiple. In the specification and claims, "and / or" indicates at least one of the connected objects, and the symbol " / " generally indicates that the related objects before and after are in an "or" relationship.

[0018] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and may 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), and other systems. In the embodiments of the present application, the terms "system" and "network" are often used interchangeably, and the techniques described herein may be used in the above systems and wireless communication technologies, or in other systems and wireless communication technologies. However, for illustrative purposes, the following description will describe a New Radio (NR) system, and NR terminology will be used in most of the following description, but these technologies are applicable to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0019] 1 is a block diagram showing a wireless communication system to which an embodiment of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be a terminal side device such as a mobile phone, a tablet personal computer (Tablet Personal Computer), a laptop computer (also called a notebook computer), a personal digital assistant (PDA), a personal digital assistant, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR), a robot, a wearable device, a vehicle user equipment (VUE), a pedestrian user equipment (PUE), a smart home device (a household device with a wireless communication function, such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (PC), an automated teller machine, or a self-service device. Wearable devices include smart watches, smart bracelets, smart earphones, smart glasses, smart accessories (smart bangles, smart hand chains, smart rings, smart necklaces, smart anklets, smart wristbands, smart clothing, etc.). The specific type of the terminal 11 is not limited in the embodiments of the present application. The network side equipment 12 may include an access network device or a core network. The access network equipment 12 is also called a radio access network device, a radio access network (RAN), a radio access network function, or an access network unit.The access network device may be called a base station, a wireless local area network (WLAN), or a wireless fidelity (WiFi). The base station may be called a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home B node, a home evolved B node, a transmission and reception point (TRP), or other appropriate terminology in the field. The base station is not limited to a specific technical term as long as it can achieve the same technical effect. Note that in the embodiments of this application, only base stations in an NR system are used as examples, and the specific type of base station is not limited.

[0020] The following describes some concepts and / or terms related to the FDSS parameter setting method, device, user equipment, and storage medium provided by the embodiments of the present application.

[0021] 1, FDSS technology The peak-to-average power ratio of the analog continuous signal output after a set of discrete time-domain data signals is converted by a Digital-to-Analog Converter (DAC) correlates with the relationship between the set of discrete time-domain data.

[0022] Let yd(n) be obtained by convolving a set of discrete time domain data signals y(n) with a set of delayed discrete data d(n).

number

[0023] Let y(n) and yd(n) be the peak-to-average power ratios of the signals output after conversion by the DAC, respectively, PAPR1 and PAPR2. If d(n) is a set of designed weighting coefficient sequences, the correlation between adjacent data in yd(n) is higher than the correlation between adjacent data in y(n). The higher the correlation, the lower the PAPR, so PAPR2 is smaller than PAPR1. Therefore, the convolution of a set of discrete time-domain data with a set of designed discrete data can effectively reduce the PAPR.

[0024] According to the convolution theorem, the convolution of two time-domain signals is equivalent to the point-wise multiplication of the two time-domain signals in the frequency domain. Therefore, by converting a set of discrete time-domain data into discrete frequency-domain data using DFT, then point-wise multiplying it with a designed spectrum shaping sequence, and then performing an inverse discrete Fourier transform (IDFT), the resulting time-domain signal can effectively reduce the PAPR. Because point-wise multiplication is less complex than convolution, this PAPR reduction technique is more conveniently performed in the frequency domain, and is called FDSS technology.

[0025] 2. Extended FDSS technology The extended FDSS technology is also called FDSS with spectrum extension.

[0026] The introduction of a shaping filter may reduce the transmission power at the edge of the assigned frequency band, resulting in a degradation of demodulation performance.

[0027] Spectrum spreading is one of the possible methods to improve demodulation performance. By reserving a small number of PRBs in the vicinity of the FDSS transmission, the frequency domain waveform roll-off can be adjusted, resulting in a relatively smooth shaped waveform and optimizing the d(n) coefficient, resulting in a favorable PAPR reduction effect. There are two main methods for achieving this: reserving idle PRBs and reserving overlapping PRBs.

[0028] Figure 2 shows a schematic diagram of a spectrum shaping method based on idle PRB reservation. After UE data scheduling, some idle PRBs are reserved to accommodate the filter roll-off sidelobes. Reserving some idle PRBs reduces the UE's windowing roll-off width and cutoff frequency requirements compared to a method where UEs are placed closer together, resulting in a smoother drop and less sudden fluctuations at the roll-off point, which in turn improves PAPR performance, reduces the power back-off value, and increases the actual transmit power, resulting in better performance.

[0029] Figure 3 is a schematic diagram of a spectrum shaping method based on overlapping PRBs. To achieve spectrum shaping based on overlapping PRBs, the content of the first PRB among the data transmission PRBs is duplicated and added to the end of the data transmission PRB, and the content of the last PRB among the data transmission PRBs is duplicated and added to the beginning of the transmission PRB, thereby forming the PRB bandwidth type shown in Figure 3. This method is expected to achieve greater performance improvement than the method shown in Figure 2 above, because the reservable PRBs are more relevant than reserving idle PRBs.

[0030] Hereinafter, the FDSS parameter setting method provided by the embodiments of the present application will be described in detail with reference to the drawings according to some embodiments and their application scenarios.

[0031] As described in the background art above, spectrum spreading is a method for improving demodulation performance, and reserving some extended PRBs for FDSS can achieve better gain effects in modulation. However, the gain provided by FDSS varies depending on the modulation scheme and scheduling settings. Thus, how to configure FDSS to ensure system performance in each scenario for uplink transmission under different conditions / scenarios is an issue that needs to be resolved as soon as possible.

[0032] An embodiment of the present application provides a method for configuring FDSS parameters. A UE can dynamically switch or configure FDSS-related parameters for performing uplink transmission based on FDSS based on first information, where the first information includes at least one of an association relationship between the FDSS-related parameters and the first parameters for performing uplink transmission, first instruction information for indicating FDSS-related parameters that need to be dynamically switched or configured, and signal measurement values ​​or signal statistics. In this technical solution, the UE can dynamically switch or configure some FDSS settings (i.e., FDSS-related parameters) by determining the FDSS-related parameters required for uplink transmission based on the association relationship between the FDSS-related parameters and the first parameters for uplink transmission, and / or can dynamically switch or configure some FDSS settings based on the FDSS-related parameters that need to be dynamically switched or configured, which are explicitly indicated by the first instruction information, and / or can dynamically switch or configure some FDSS settings by obtaining FDSS-related parameters available for uplink transmission from signal measurement values ​​or signal statistics, i.e., actual measurement or statistical conditions of some signal parameters. In this way, the UE can dynamically switch or set FDSS-related parameters for uplink transmission in each scenario, so that when uplink transmission is based on FDSS, the UE can adapt to uplink transmission in each scenario using the gain provided by FDSS, thereby effectively reducing the PAPR and achieving optimal system performance.

[0033] An embodiment of the present application provides a method for setting FDSS parameters. Figure 4 shows a flowchart of the method for setting FDSS parameters provided by the embodiment of the present application. As shown in Figure 4, the method for setting FDSS parameters provided by the embodiment of the present application may include the following steps 201 and 202.

[0034] In step 201, the UE obtains first information.

[0035] In step 202, the UE dynamically switches or sets FDSS-related parameters based on the first information.

[0036] In the embodiment of the present application, the FDSS-related parameters are parameters for performing uplink transmission based on FDSS.

[0037] In an embodiment of the present application, the first information is: an association relationship between the FDSS-related parameters and a first parameter, which is a parameter for performing uplink transmission; First instruction information for indicating FDSS-related parameters that need to be dynamically switched or set; and at least one of: a signal measurement or a signal statistic.

[0038] Optionally, in an embodiment of the present application, the FDSS-related parameters are: a spectral expansion factor (alpha), and The number of spectrum extension PRBs (number of extension PRBs), an FDSS designation or index; Whether it is an FDSS method or a non-FDSS method, a spectrum extension method; The type of FDSS filter, and a method for generating a demodulation reference signal (DMRS) sequence.

[0039] Optionally, in an embodiment of the present application, the spectral broadening factor is: the ratio of the number of spectrum extension PRBs to the total number of allocated PRBs; the ratio of the number of spectrum extension PRBs to the number of PRBs used for Physical Uplink Shared Channel (PUSCH) transmission.

[0040] Optionally, in the embodiments of the present application, the above-mentioned spectral expansion factor is used to determine the number of extended PRBs, and the number of extended PRBs determined by the spectral expansion factor is allowed to be corrected to other values ​​as the actual number of extended PRBs.

[0041] For example, the actual number of extended PRBs is an even number. If the spectral extension factor alpha is 0.2 and the number of allocated PRBs is 26, the actual number of extended PRBs is 4, i.e., the largest even number smaller than 0.2×26 is the actual number of extended PRBs.

[0042] Optionally, in the embodiment of the present application, the number of spectrum extension PRBs is the number of extension PRBs on one side of the data-carrying PRB, or is the sum of the number of extension PRBs on both sides of the data-carrying PRB.

[0043] Optionally, in an embodiment of the present application, the FDSS indication or index is: An indication or index of whether FDSS needs to be supported; and an indication or index of whether FDSS with spectrum extension needs to be supported.

[0044] Optionally, in an embodiment of the present application, the spectrum spreading scheme includes at least one of reserving idle PRBs, reserving overlapping PRBs.

[0045] Optionally, in an embodiment of the present application, the method of reserving the overlapping PRB includes at least one of a symmetric extension method, a cyclic extension method, and a cyclic shift plus symmetric extension method.

[0046] Optionally, in an embodiment of the present application, the type of the FDSS filter is: 3-tap FDSS filter, 2-tap FDSS filter, Truncated root raised cosine FDSS filter (Truncated RRC FDSS filter), Transparent filters for protocols, and a non-transparent filter for the protocol.

[0047] Optionally, in the embodiment of the present application, the DMRS sequence generation method is: a first method for generating a DMRS sequence based on a total number of PRBs including data transmission PRBs and extended PRBs; a second scheme for generating DMRS sequences for data-carrying PRBs based on the number of data-carrying PRBs (excluding extended PRBs).

[0048] Optionally, in the embodiment of the present application, in the first scheme, the DMRS sequence of the extended PRB is directly generated at the transmitting end.

[0049] Optionally, in the embodiment of the present application, in the second scheme, the DMRS sequence of the extended PRB is directly obtained by copying the DMRS sequence of the data-carrying PRB.

[0050] Optionally, in the embodiment of the present application, the method of obtaining the DMRS sequence of the data transmission PRB by copying it is any one of a symmetric extension method, a cyclic extension method, and a cyclic shift and symmetric extension method.

[0051] Optionally, in an embodiment of the present application, the first parameter is: the number of PRBs allocated; and The location of the assigned PRB or the location of the start PRB; A modulation method; The code rate and Frequency Domain Resource Assignment (FDRA) and Time Domain Resource Assignment (TDRA) and An indication of a new transmission or retransmission; Redundancy Version (RV) number, and and Transmit Power Control (TPC) commands.

[0052] The redundancy version number indicates the number of transmissions (retransmissions).

[0053] Alternatively, in the embodiment of the present application, the number of allocated PRBs is the number of PRBs used for PUSCH transmission only, or the total number of PRBs including PRBs used for PUSCH transmission and extended PRBs.

[0054] Optionally, in an embodiment of the present application, different values ​​or intervals of the first parameter are associated with FDSS-related parameters that are dynamically switched / set, i.e., there is a predefined or pre-set association relationship.

[0055] For example, the UE may determine corresponding FDSS-related parameters based on the number of allocated PRBs and the above association relationship. For example, different intervals of the number of allocated PRBs are associated with different spectral expansion factors (alpha). When the number of allocated PRBs is in the interval [A, B], the corresponding spectral expansion factor (alpha) is a value X, and when the number of allocated PRBs is in the interval [C, D], the corresponding spectral expansion factor (alpha) is a value Y.

[0056] In the embodiments of the present application, different scheduling parameter settings (e.g., different modulation schemes or different scheduling PRBs) and different FDSS parameter settings (e.g., different spectrum spreading factors, different spectrum spreading schemes, etc.) will bring about different performance gains. That is, since each scheduling parameter setting has its own optimal FDSS parameter, the present technical solution can dynamically switch / change some FDSS settings for uplink transmission under different conditions / scenes to achieve optimal system performance.

[0057] Optionally, the FDSS parameter setting method provided by the embodiment of the present application further includes the following steps 301 and 302.

[0058] In step 301, if the number of allocated PRBs is the number of PRBs used for PUSCH transmission only, the UE determines the spectrum spreading factor or the number of spectrum spreading PRBs based on the number of allocated PRBs.

[0059] In step 302, the UE selects M PRBs on both sides of the assigned PRB as extended PRBs, and performs FDSS filtering on the assigned PRB and the M extended PRBs.

[0060] M is the number of spectrum-extending PRBs.

[0061] In addition, if the assigned PRB is a PRB used only for PUSCH transmission, the UE may determine a spectrum expansion factor (alpha) or the number of spectrum expansion PRBs based on the number of assigned PRBs, and then select M more PRBs on both sides of the assigned PRB as expanded PRBs (i.e., M expanded PRBs), and perform FDSS filtering on the assigned PRB and the M expanded PRBs.

[0062] In the embodiment of the present application, steps 201 and 202 may be executed first, and then steps 301 and 302 may be executed.

[0063] Optionally, the FDSS parameter setting method provided by the embodiment of the present application further includes the following steps 401 and 402.

[0064] In step 401, if the number of allocated PRBs is the total number of PRBs including PRBs used for PUSCH transmission and extended PRBs, the UE determines the spectrum expansion factor or the number of spectrum expansion PRBs based on the number of allocated PRBs.

[0065] In step 402, the UE selects N PRBs as extended PRBs within the allocated PRBs, and performs FDSS filtering on the allocated PRBs.

[0066] N is the number of spectrum spreading PRBs.

[0067] In addition, if the allocated PRBs are the total number of PRBs including PRBs used for PUSCH transmission and reserved / extended PRBs, the UE determines the spectrum expansion factor (alpha) or the number of spectrum expansion PRBs based on the number of allocated PRBs, then selects N PRBs from the allocated PRBs as extended PRBs, and performs FDSS filtering on the allocated PRBs.

[0068] In the embodiment of the present application, steps 201 and 202 may be executed first, and then steps 401 and 402 may be executed.

[0069] In an embodiment of the present application, the UE can dynamically switch or set the FDSS-related parameters by determining corresponding FDSS-related parameters, i.e., FDSS-related parameters required for uplink transmission, based on the association relationship between different values ​​or intervals of the first parameter and the FDSS-related parameters and the parameters used for the current uplink transmission (e.g., the number of allocated PRBs). Thus, during uplink transmission based on FDSS, the UE can accommodate the current uplink transmission with the gain provided by FDSS, thereby effectively reducing the PAPR and achieving optimal system performance.

[0070] Optionally, in the embodiment of the present application, the first indication information is: Setting FDSS-related parameters that need to be dynamically switched or configured according to specific fields in Downlink Control Information (DCI); Configuring FDSS-related parameters that need to be dynamically switched or configured through Radio Resource Control (RRC) configuration and DCI dynamic activation; The PAPR reduction method is obtained by at least one of: indicating one of a plurality of PAPR reduction related methods pre-configured by the network (e.g., by RRC signaling) via DCI; and configuring FDSS-related parameters that require dynamic switching or configuration.

[0071] It should be noted that FDSS (e.g., FDSS-related methods with or without spectrum spreading) is one method for reducing PAPR, and other non-FDSS PAPR reduction methods, such as tone reservation (TR), also exist. Here, the DCI indicates whether to use the FDSS or non-FDSS PAPR reduction method.

[0072] Optionally, in an embodiment of the present application, when one specific field in the DCI is a first value, it indicates that FDSS is not used, and when one specific field in the DCI is a second value, it indicates that FDSS is used.

[0073] For example, when one specific field in the DCI is 0, it indicates that FDSS is not used, and when one specific field in the DCI is 1, it indicates that FDSS is used.

[0074] Optionally, in the embodiment of the present application, whether FDSS is used or not is indicated by indicating the spectrum expansion factor by one specific field in the DCI.

[0075] Optionally, in an embodiment of the present application, multiple sets of FDSS-related parameters are pre-configured by RRC, and one set of FDSS-related parameters is activated from the multiple sets of FDSS-related parameters by one specific field in DCI.

[0076] For example, when one specific field in the DCI is 0, it indicates that FDSS parameter set A is activated, and when the specific field in the DCI is 1, it indicates that FDSS parameter set B is activated.

[0077] Optionally, in an embodiment of the present application, the plurality of PAPR reduction related methods include a related method of FDSS with spectrum spreading, a related method of FDSS without spectrum spreading, and a related method of tone reservation.

[0078] In an embodiment of the present application, multiple methods for reducing PAR / MPR (i.e., FDSS method or non-FDSS method) are configured by RRC, and one of the methods for reducing PAR / MPR is instructed to be used for transmitting the PUSCH to be scheduled / activated by DCI. For example, four methods, such as FDSS without spectrum extension, FDSS with spectrum extension factor 0.1, FDSS with spectrum extension factor 0.2, and Tone reservation, are configured by RRC.

[0079] Optionally, in an embodiment of the present application, for dynamic scheduling / dynamic grant (DG) PUSCH, the scheduled PUSCH is instructed to use one PAPR reduction related method by scheduling two bits in the DCI.

[0080] Optionally, in an embodiment of the present application, for a Configured Grant (CG) PUSCH, two bits in the DCI are activated to instruct the PUSCH to be activated to use one PAPR reduction related method.

[0081] Alternatively, in the embodiment of the present application, the above two bits may be a newly introduced bit field, or may use information bits in the DCI field.

[0082] Optionally, in the embodiment of the present application, the DCI may be a specific DCI or a DCI used for uplink scheduling.

[0083] In an embodiment of the present application, the UE can dynamically switch or configure some of the settings of the FDSS based on the FDSS-related parameters that currently need to be dynamically switched or configured, which are dynamically instructed by explicit signaling (first instruction information). Thus, during uplink transmission based on the FDSS, the UE can accommodate the current uplink transmission with the gain provided by the FDSS, thereby effectively reducing the PAPR and achieving optimal system performance.

[0084] Optionally, in an embodiment of the present application, the signal measurements or signal statistics are: Downlink Channel State Information (CSI) or uplink CSI; Reference Signal Receiving Power (RSRP) of the downlink or uplink signal; A received signal strength indicator (RSSI) of a downlink or uplink signal; and the number of times reception has failed / retransmissions of the PUSCH transmitted using one or more FDSS-related parameters.

[0085] Optionally, in the embodiment of the present application, the CSI may include at least one of a Channel Quality Indication (CQI), a Precoding Matrix Indicator (PMI), a Precoding Type Indicator (PTI), a Rank Indicator (RI), etc.

[0086] Optionally, in an embodiment of the present application, the signal may be a reference signal for calculating the path loss.

[0087] Optionally, in embodiments of the present application, the signal measurements or signal statistics may further include at least one of other parameters indicative of signal strength / quality, such as Reference Signal Receiving Quality (RSRQ), Carrier to Interference plus Noise Ratio (RS-CINR), Signal to Interference plus Noise Ratio (SINR), etc.

[0088] Optionally, in the embodiment of the present application, different values ​​or intervals of the signal measurement value and the FDSS-related parameters have a predefined or preset association relationship. For example, when the CQI measured by the UE is higher or lower than a predetermined threshold, the UE may adjust the FDSS-related parameters corresponding to the CQI value or interval.

[0089] Optionally, referring to FIG. 4 and as shown in FIG. 5, the FDSS parameter setting method provided by the embodiment of the present application further includes the following steps 501 and 502 after the above step 202.

[0090] In step 501, the UE obtains FDSS-related parameters that are dynamically switched or configured by the UE by reporting CSI or UE assistance information to a network side device.

[0091] The UE assistance information may be understood as information that assists in obtaining FDSS-related parameters that are dynamically switched or set, and may be, for example, information related to some FDSSs carried in PUSCH or PUCCH.

[0092] In step 502, the network side device receives CSI or UE assistance information reported from the UE, and obtains FDSS-related parameters to be dynamically switched or set by the UE based on the CSI or UE assistance information.

[0093] In the embodiment of the present application, the order of execution of step 501 and step 202 is not limited. For example, step 202 may be executed first, followed by step 501. That is, the UE may first dynamically switch or configure the FDSS-related parameters, and then report the CSI or UE assistance information to the network side device. Alternatively, step 501 may be executed first, followed by step 202. That is, the UE may report the CSI or UE assistance information to the network side device in advance, and then dynamically switch or configure the FDSS-related parameters. Alternatively, step 202 and step 501 may be executed simultaneously. That is, the UE may dynamically switch or configure the FDSS-related parameters and simultaneously report the CSI or UE assistance information to the network side device. FIG. 5 illustrates only the case where step 202 is executed first, followed by step 501.

[0094] In an embodiment of the present application, the UE can dynamically switch or configure some of the FDSS settings by obtaining FDSS-related parameters available for uplink transmission based on signal measurement values ​​or signal statistics, i.e., the current actual measurement or statistical status of some signal parameters, so that during uplink transmission based on the FDSS, the gain provided by the FDSS can accommodate the current uplink transmission, effectively reducing the PAPR and achieving optimal system performance.

[0095] Optionally, the FDSS parameter setting method provided by the embodiment of the present application further includes the following step 601:

[0096] In step 601, the UE reports UE capability information to the network side device.

[0097] In an embodiment of the present application, the UE capability information is for dynamically setting or indicating FDSS-related parameters. Supporting FDSS with or without spectrum extension; Supporting Tone Reservation (TR) with spectrum extension; Supporting FDSS with spectrum spreading and data copying; Supporting FDSS with spectrum extension and no data copying; Supporting FDSS with or without quadrature phase shift keying (QPSK) modulated spectrum spread; and supporting FDSS with spectrum extension, where the extension is at the PRB or sub-PRB level.

[0098] Note that an FDSS with spectrum extension is referred to as FDSS with spectrum extension, an FDSS without spectrum extension is referred to as FDSS without spectrum extension, a tone reservation with spectrum extension is referred to as Tone reservation with spectrum extension, an FDSS with spectrum extension and data copying is referred to as FDSS with spectrum extension and data copying, an FDSS with spectrum extension but without data copying is referred to as FDSS with or without spectrum extension with QPSK modulation, an FDSS that supports spectrum extension and the extension is at the sub-PRB level is referred to as FDSS with spectrum extension and the extension is at the PRB level, and an FDSS that supports spectrum extension and the extension is at the PRB level is referred to as FDSS with spectrum extension and the extension is at the PRB level.

[0099] Optionally, in an embodiment of the present application, whether FDSS with spectrum extension is dynamically configured or indicated by the network only if the UE reports that it supports FDSS with spectrum extension.

[0100] Optionally, in an embodiment of the present application, if whether or not FDSS involves spectrum spreading is dynamically configured or indicated by a network side device, whether FDSS is used only in Msg3 PUSCH, or in PUSCHs used for uplink transmission, or in all PUSCHs is dynamically configured or indicated by the network.

[0101] Optionally, in the embodiments of the present application, the UE capability information is determined based on the UE priority (e.g., the UE priority indicated in Msg3), or is determined by the Msg3 information for collision resolution, or is determined by the Physical Random Access Channel (PRACH) resources.

[0102] Alternatively, in the embodiments of the present application, indicating UE capability information by the above-mentioned Msg3 information for collision resolution may be specifically indicated by a new logical channel label, or by division multiplexing of uplink control messages in Msg3, or by bits added in Msg3, or by DMRS resources of Msg3 PUSCH, or by scrambling sequence of Msg3 PUSCH.

[0103] In the embodiment of the present application, step 601 may be executed first, followed by steps 201 and 202.

[0104] In an embodiment of the present application, the UE can report FDSS-related UE capability information to the network side device, and the network side device can dynamically configure FDSS-related parameters for the UE according to the FDSS-related UE capability information. Thus, the UE can dynamically switch or configure the FDSS-related parameters in different scenarios, so that during uplink transmission based on FDSS, the UE can adapt to uplink transmission in each scenario with the gain provided by FDSS, thereby effectively reducing the PAPR and achieving optimal system performance.

[0105] An embodiment of the present application provides a method for configuring FDSS parameters. The UE can dynamically switch or configure some FDSS settings (i.e., FDSS-related parameters) by determining FDSS-related parameters required for uplink transmission based on an association relationship between the FDSS-related parameters and first parameters for uplink transmission; and / or can dynamically switch or configure some FDSS settings based on FDSS-related parameters that require dynamic switching or configuration explicitly indicated by first indication information; and / or can dynamically switch or configure some FDSS settings by obtaining FDSS-related parameters available for uplink transmission from signal measurement values ​​or signal statistics, i.e., actual measurement or statistical conditions of some signal parameters. In this way, the UE can dynamically switch or configure the FDSS-related parameters for uplink transmission in each scenario, thereby utilizing the gain provided by the FDSS during uplink transmission based on the FDSS to accommodate uplink transmission in each scenario, thereby effectively reducing the PAPR and achieving optimal system performance.

[0106] The FDSS parameter configuration method provided by the embodiment of the present application may be performed by an FDSS parameter configuration device. In the embodiment of the present application, the FDSS parameter configuration method provided by the embodiment of the present application will be described by taking the UE as an example of performing the FDSS parameter configuration method.

[0107] 6 shows a schematic diagram of a possible structure of an FDSS parameter setting device in an embodiment of the present application, which is applied to a UE. As shown in FIG. 6, the FDSS parameter setting device 60 may include an acquisition module 61 and an execution module 62.

[0108] The acquisition module 61 acquires first information. The execution module 62 dynamically switches or sets FDSS-related parameters, which are parameters for performing uplink transmission based on the FDSS, based on the first information acquired by the acquisition module 61. The first information includes at least one of an association relationship between the FDSS-related parameters and first parameters, which are parameters for performing uplink transmission, first indication information for indicating the FDSS-related parameters that need to be dynamically switched or set, and signal measurement values ​​or signal statistics.

[0109] An embodiment of the present application provides an FDSS parameter setting device. The FDSS parameter setting device can dynamically switch or set some FDSS settings (i.e., FDSS-related parameters) by determining FDSS-related parameters required for uplink transmission based on an association relationship between the FDSS-related parameters and first parameters for uplink transmission; and / or can dynamically switch or set some FDSS settings based on FDSS-related parameters that require dynamic switching or setting that are explicitly indicated by first indication information; and / or can dynamically switch or set some FDSS settings by obtaining FDSS-related parameters available for uplink transmission from signal measurement values ​​or signal statistics, i.e., actual measurement or statistical conditions of some signal parameters. In this way, the FDSS parameter setting device dynamically switches or sets the FDSS-related parameters for uplink transmission in each scenario, thereby enabling uplink transmission based on the FDSS to be adapted to each scenario using the gain provided by the FDSS, thereby effectively reducing the PAPR and achieving optimal system performance.

[0110] In one possible embodiment, the FDSS-related parameters are: a spectral broadening factor; the number of spectrally extended PRBs; an FDSS designation or index; Whether it is an FDSS method or a non-FDSS method, a spectrum extension method; The type of FDSS filter, and a DMRS sequence generation method.

[0111] In one possible embodiment, the spectral broadening factor is: the ratio of the number of spectrum extension PRBs to the total number of allocated PRBs; the ratio between the number of spectrum extension PRBs and the number of PRBs used for PUSCH transmission.

[0112] In one possible embodiment, the above-mentioned spectral expansion factor is used to determine the number of extended PRBs, and the number of extended PRBs determined by the spectral expansion factor is allowed to be corrected to other values ​​as the actual number of extended PRBs.

[0113] In one possible embodiment, the number of spectrum extension PRBs is the number of extension PRBs on one side of the data-carrying PRB, or the sum of the number of extension PRBs on both sides of the data-carrying PRB.

[0114] In one possible embodiment, the FDSS indication or index is: An indication or index of whether FDSS needs to be supported; and an indication or index of whether FDSS with spectrum extension needs to be supported.

[0115] In one possible embodiment, the spectrum extension scheme comprises at least one of: reserving idle PRBs; reserving overlapping PRBs; The method of reserving overlapping PRBs includes at least one of a symmetric extension method, a cyclic extension method, and a cyclic shift and symmetric extension method.

[0116] In one possible embodiment, the FDSS filter type is: A 3-tap FDSS filter and A 2-tap FDSS filter, a truncated root raised cosine FDSS filter; Protocol-transparent filters and and a filter that is not transparent to the protocol.

[0117] In one possible embodiment, the DMRS sequence generation scheme is: a first method for generating a DMRS sequence based on a total number of PRBs including data transmission PRBs and extended PRBs; and a second scheme for generating DMRS sequences for the data-carrying PRBs based on the number of data-carrying PRBs.

[0118] In one possible embodiment, in the first scheme, the DMRS sequence of the extended PRB is directly generated at the transmitting end, and in the second scheme, the DMRS sequence of the extended PRB is directly obtained by copying the DMRS sequence of the data-carrying PRB.

[0119] In one possible embodiment, the method of obtaining the DMRS sequence copy of the data transmission PRB is any one of a symmetric extension method, a cyclic extension method, and a cyclic shift and symmetric extension method.

[0120] In one possible embodiment, the first parameter is: the number of PRBs allocated; and The location of the assigned PRB or the location of the start PRB; A modulation method; The code rate and FDRA and TDRA and An indication of a new transmission or retransmission; RV number and and TPC commands.

[0121] In one possible embodiment, the number of allocated PRBs is the number of PRBs used for PUSCH transmission only, or the total number of PRBs including PRBs used for PUSCH transmission and extended PRBs.

[0122] In one possible embodiment, the FDSS parameter setting device 60 further includes a determination module. When the number of allocated PRBs is the number of PRBs used for PUSCH transmission only, the determination module determines the spectral expansion factor or the number of spectral expansion PRBs based on the number of allocated PRBs. Furthermore, the execution module 62 selects M PRBs on both sides of the allocated PRB as extended PRBs, and performs FDSS filtering on the allocated PRB and the M extended PRBs, where M is the number of spectral expansion PRBs.

[0123] In one possible embodiment, the FDSS parameter setting device 60 further includes a determining module that determines a spectral expansion factor or the number of spectral expansion PRBs based on the number of allocated PRBs, where the number of allocated PRBs is the total number of PRBs including PRBs used for PUSCH transmission and extended PRBs. Furthermore, the executing module 62 selects N PRBs as extended PRBs from the allocated PRBs, and performs FDSS filtering on the allocated PRBs, where N is the number of spectral expansion PRBs.

[0124] In one possible embodiment, the first indication information is: Setting FDSS-related parameters that need to be dynamically switched or configured according to specific fields in DCI; Configuring FDSS-related parameters that need to be dynamically switched or configured through RRC configuration and DCI dynamic activation; and configuring FDSS-related parameters that require dynamic switching or configuration by indicating, via DCI, one PAPR reduction-related method from among a plurality of PAPR reduction-related methods pre-configured by the network.

[0125] In one possible embodiment, when one particular field in the DCI is a first value, it indicates that FDSS is not used, and when one particular field in the DCI is a second value, it indicates that FDSS is used.

[0126] In one possible embodiment, one specific field in the DCI indicates the spectrum expansion factor, thereby indicating whether or not FDSS is used.

[0127] In one possible embodiment, multiple sets of FDSS-related parameters are pre-configured by the RRC, and one set of FDSS-related parameters is activated from the multiple sets of FDSS-related parameters by one specific field in the DCI.

[0128] In one possible embodiment, the plurality of PAPR reduction related methods include a related method for FDSS with spectral extension, a related method for FDSS without spectral extension, and a related method for TR.

[0129] In one possible embodiment, for DG PUSCH, the scheduled PUSCH is instructed to use one PAPR reduction related method by scheduling two bits in the DCI, and for CG PUSCH, the activated PUSCH is instructed to use one PAPR reduction related method by activating two bits in the DCI.

[0130] In one possible embodiment, the DCI may be a specific DCI or a DCI used for uplink scheduling.

[0131] In one possible embodiment, the signal measurements or signal statistics are: downlink CSI or uplink CSI; RSRP of the downlink signal or the uplink signal; the RSSI of the downlink signal or the uplink signal; and the number of times reception has failed / retransmissions of the PUSCH transmitted using one or more FDSS-related parameters.

[0132] In one possible embodiment, different values ​​or intervals of the signal measurement and the FDSS-related parameters have a predefined or pre-set association relationship.

[0133] In one possible embodiment, the FDSS parameter setting device 60 further includes a sending module, which reports CSI or UE assistance information to a network side device to obtain FDSS-related parameters to be dynamically switched or set by the UE.

[0134] In one possible embodiment, the FDSS parameter setting device 60 further includes a sending module, which reports UE capability information for dynamically setting or instructing FDSS-related parameters to a network side device. The UE capability information includes: Supporting FDSS with or without spectrum extension; Supporting tone reservation with spectrum extension; Supporting FDSS with spectrum spreading and data copying; Supporting FDSS with spectrum extension and no data copying; Supporting FDSS with or without QPSK modulated spectrum spread; and supporting FDSS with spectrum extension, where the extension is at the PRB or sub-PRB level.

[0135] In one possible embodiment, whether FDSS with spectrum extension is dynamically configured or indicated by the network only if the UE reports that it supports FDSS with spectrum extension.

[0136] In one possible embodiment, when whether or not FDSS involves spectrum spreading is dynamically configured or indicated by the network side device, whether FDSS is used only in Msg3 PUSCH, or in PUSCHs used for uplink transmission, or in all PUSCHs is dynamically configured or indicated by the network.

[0137] In one possible embodiment, the UE capability information is determined based on the UE priority, or is indicated by Msg3 information for collision resolution, or is indicated by PRACH resources.

[0138] The FDSS parameter setting device provided by the embodiments of the present application can implement each step implemented by the UE in the above method embodiments and achieve the same technical effects, which will not be repeated here to avoid redundancy.

[0139] In the embodiments of the present application, the FDSS parameter setting device may be a UE, such as a UE having an operating system, or a component of the UE, such as an integrated circuit or chip. The UE may be a terminal or other devices other than a terminal. For example, the UE may include, but is not limited to, the types of UE 11 listed above. The other devices may be, for example, a server, a network-attached storage (NAS), etc., but are not specifically limited in the embodiments of the present application.

[0140] Optionally, as shown in Fig. 7, an embodiment of the present application further provides a communication device 5000. The communication device 5000 includes a processor 5001 and a memory 5002, and the memory 5002 stores programs or commands executable by the processor 5001. For example, if the communication device 5000 is a UE, the programs or commands, when executed by the processor 5001, can realize the steps of the above-mentioned UE-side method embodiment and achieve the same technical effects, which will not be repeated here to avoid redundancy.

[0141] An embodiment of the present application further provides a UE, comprising a processor and a communication interface. The processor acquires first information and dynamically switches or configures FDSS-related parameters based on the first information, the first information being parameters for performing uplink transmission based on FDSS. The first information includes at least one of: an association relationship between the FDSS-related parameters and the first parameters for performing uplink transmission; first indication information for indicating the FDSS-related parameters that need to be dynamically switched or configured; and signal measurement or signal statistics. The UE embodiment corresponds to the above-described UE-side method embodiment, and the implementation steps and implementation manners of the above-described method embodiment can be applied to the UE embodiment to achieve the same technical effects.

[0142] Specifically, FIG. 8 is a schematic diagram of a hardware structure of a UE for implementing an embodiment of the present application.

[0143] The UE 7000 includes at least some components such as, but not limited to, a radio frequency unit 7001, a network module 7002, an audio output unit 7003, an input unit 7004, a sensor 7005, a display unit 7006, a user input unit 7007, an interface unit 7008, a memory 7009, and a processor 7010.

[0144] As will be appreciated by those skilled in the art, the UE 7000 may further include a power source (e.g., a battery) for powering each component. The power source is logically connected to the processor 7010 by a power management system, thereby enabling the power management system to realize functions such as charge / discharge management and power consumption management. The structure of the UE shown in FIG. 8 is not intended to limit the UE, and the UE may include more or fewer components than those shown, or a combination of some components, or a different component configuration, which will not be repeated here.

[0145] In addition, in an embodiment of the present application, the input unit 7004 may include a graphics processing unit (GPU) 70041 for processing image data of static or video images captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode, and a microphone 70042. The display unit 7006 may include a display panel 70061, which may be configured as a liquid crystal display, an organic light-emitting diode (OLED), or the like. The user input unit 7007 includes a touch panel 70071 and other input devices 70072. The touch panel 70071 is also called a touch screen. The touch panel 70071 may include two parts: a touch detection device and a touch controller. The other input devices 70072 may include, but are not limited to, a physical keyboard, function buttons (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and a control lever, and will not be described again here.

[0146] In the embodiment of the present application, the radio frequency unit 7001 receives downlink data from the network side device and sends it to the processor 7010 for processing, and also sends uplink data to the network side device. Typically, the radio frequency unit 7001 includes, but is not limited to, an antenna, at least one amplifier, a receiver-transmitter, a coupler, a low-noise amplifier, a duplexer, etc.

[0147] The memory 7009 may be used to store software programs or commands and various data. The memory 7009 may mainly include a first memory area for storing programs or commands and a second memory area for storing data. The first memory area may store an operating system, an application or command required for at least one function (e.g., an audio playback function, an image playback function, etc.), etc. The memory 7009 may include volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), or flash memory. The volatile memory may be a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate synchronous DRAM (DDRSDRAM), an enhanced synchronous DRAM (ESDRAM), a synchronous link DRAM (SLDRAM), or a direct Rambus RAM (DRRAM). Memory 7009 in embodiments of the present application includes, but is not limited to, these and any other suitable memory.

[0148] The processor 7010 may include one or more processing units. Optionally, the processor 7010 may be integrated with an application processor that mainly processes an operating system, a user interface, and applications or commands, and a modem processor, such as a baseband processor that mainly processes wireless communications. Of course, the modem processor does not have to be integrated into the processor 7010.

[0149] The processor 7010 acquires first information and dynamically switches or sets FDSS-related parameters based on the first information, which is a parameter for performing uplink transmission based on the FDSS. The first information includes at least one of an association relationship between the FDSS-related parameters and the first parameters, which are parameters for performing uplink transmission, first indication information for indicating the FDSS-related parameters that need to be dynamically switched or set, and signal measurement values ​​or signal statistics.

[0150] An embodiment of the present application provides a UE. The UE can dynamically switch or configure some FDSS settings (i.e., FDSS-related parameters) by determining FDSS-related parameters required for uplink transmission based on an association relationship between the FDSS-related parameters and first parameters for uplink transmission; and / or can dynamically switch or configure some FDSS settings based on FDSS-related parameters that require dynamic switching or configuration explicitly indicated by first indication information; and / or can dynamically switch or configure some FDSS settings by obtaining FDSS-related parameters available for uplink transmission from signal measurement values ​​or signal statistics, i.e., actual measurement or statistical conditions of some signal parameters. In this way, the UE can dynamically switch or configure the FDSS-related parameters for uplink transmission in each scenario, thereby utilizing the gain provided by the FDSS during uplink transmission based on the FDSS to accommodate uplink transmission in each scenario, thereby effectively reducing the PAPR and achieving optimal system performance.

[0151] The UE provided by the embodiments of the present application can implement each step implemented by the UE in the above method embodiments and achieve the same technical effects, which will not be repeated here to avoid redundancy.

[0152] The embodiments of the present application further provide a readable storage medium, which stores a program or command, and when the program or command is executed by a processor, it realizes the steps of the above-mentioned FDSS parameter setting method embodiment and achieves the same technical effects, which will not be repeated here to avoid redundancy.

[0153] The processor is the processor in the communication device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, etc.

[0154] The embodiments of the present application provide a chip, which includes a processor and a communication interface, and the communication interface and the processor are coupled together, and the processor executes programs or commands to implement the steps of the above method embodiments, thereby achieving the same technical effects, which will not be repeated here to avoid redundancy.

[0155] The chip described in the embodiments of the present application is also called a system on a chip, a system chip, a chip system, or an SoC.

[0156] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the steps of the above method embodiments and achieve the same technical effects, and will not be described again here to avoid redundancy.

[0157] It should be noted that, as used herein, the terms "comprise," "consist," and any other variations thereof are intended to include a non-exclusive inclusion, such that a process, method, article, or apparatus comprising a set of elements includes not only those elements but also other elements not expressly specified or inherent in such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element. Furthermore, the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed herein, and may further include performing functions substantially simultaneously or in the reverse order, depending on the functionality involved. For example, the methods described above may be performed in a different order than described, and further, steps may be added, omitted, or combined. Furthermore, features described with reference to some examples may be combined with other examples.

[0158] From the above description of the embodiments, it will be clear to those skilled in the art that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform. Of course, hardware implementation is also possible, but in many cases the former is a more preferred embodiment. Based on this view, the technical means of the present application, or a portion that contributes to the prior art, can be embodied as a software product, and the computer software product is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a plurality of commands that cause a terminal (which may be a mobile phone, computer, server, air conditioner, network device, etc.) to execute the methods described in each embodiment of the present application.

[0159] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can obtain without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

Claims

1. A user equipment (UE) acquires first information; and dynamically switching or setting, by the UE, an FDSS-related parameter, which is a parameter for performing uplink transmission based on FDSS, based on the first information; The first information is an association relationship between the FDSS-related parameters and a first parameter, which is a parameter for performing uplink transmission; First indication information for indicating FDSS-related parameters that need to be dynamically switched or set; and at least one of: a signal measurement or a signal statistic; Method for setting frequency domain spectrum shaping FDSS parameters.

2. The FDSS-related parameters are: a spectral broadening factor; the number of spectrum extension physical resource blocks (PRBs); an FDSS designation or index; Whether it is an FDSS method or a non-FDSS method, a spectrum extension method; The type of FDSS filter; and a demodulation reference signal (DMRS) sequence generation scheme.

3. The spectral broadening factor is the ratio between the number of spectrum extension PRBs and the total number of allocated PRBs; and a ratio of the number of spectrum extension PRBs to the number of PRBs used for physical uplink shared channel (PUSCH) transmission.

4. 4. The method according to claim 2 or 3, wherein the spectral expansion factor is used to determine the number of extended PRBs, and the number of extended PRBs determined by the spectral expansion factor is allowed to be corrected to another value as the actual number of extended PRBs.

5. The method of claim 2 , wherein the number of spectrum extension PRBs is the number of extension PRBs on one side of a data-carrying PRB or the sum of the number of extension PRBs on both sides of a data-carrying PRB.

6. The FDSS indication or index is: an indication or index of whether FDSS needs to be supported; and an indication or index of whether FDSS with spectrum extension needs to be supported.

7. the spectrum spreading scheme includes at least one of reserving idle PRBs, reserving overlapping PRBs; The method of claim 2 , wherein the reservation scheme for the overlapping PRBs includes at least one of a symmetric extension scheme, a cyclic extension scheme, and a cyclic shift and symmetric extension scheme.

8. The type of the FDSS filter is: a 3-tap FDSS filter; a 2-tap FDSS filter; a truncated root raised cosine FDSS filter; Protocol-transparent filters and a protocol-opaque filter.

9. The DMRS sequence generation method is as follows: a first scheme for generating a DMRS sequence based on a total number of PRBs including data transmission PRBs and extended PRBs; and a second scheme for generating DMRS sequences for data-carrying PRBs based on the number of data-carrying PRBs.

10. In the first scheme, the DMRS sequence of the extended PRB is directly generated at the transmitting end; The method according to claim 9 , wherein in the second scheme, the DMRS sequence of the extended PRB is directly obtained by copying the DMRS sequence of the data-carrying PRB.

11. The method according to claim 10 , wherein the method of obtaining the DMRS sequence of the data transmission PRB by copying the DMRS sequence is one of a symmetric extension method, a cyclic extension method, and a cyclic shift and symmetric extension method.

12. The first parameter is the number of allocated PRBs; and the location of the allocated PRB or the location of the start PRB; A modulation method; The code rate and Frequency Domain Resource Allocation (FDRA); Time Domain Resource Allocation (TDRA); An indication of a new transmission or retransmission; A redundancy version RV number; and a transmit power control (TPC) command.

13. The method of claim 12, wherein the number of allocated PRBs is the number of PRBs used for PUSCH transmission only, or the total number of PRBs including PRBs used for PUSCH transmission and extended PRBs.

14. If the number of allocated PRBs is the number of PRBs used for PUSCH transmission only, the UE determines a spectrum expansion factor or a number of spectrum expansion PRBs based on the number of allocated PRBs; the UE selecting M PRBs on both sides of the assigned PRB as extended PRBs, and performing FDSS filtering on the assigned PRB and the M extended PRBs, where M is the number of spectrum extended PRBs; 14. The method of claim 13, further comprising:

15. If the number of allocated PRBs is the total number of PRBs including PRBs used for PUSCH transmission and extended PRBs, the UE determines a spectrum extension factor or the number of spectrum extension PRBs based on the number of allocated PRBs; the UE selecting N PRBs as extended PRBs among the allocated PRBs, and performing FDSS filtering on the allocated PRBs, where N is the number of spectrum extension PRBs; 14. The method of claim 13, further comprising:

16. The first instruction information is Setting FDSS-related parameters that need to be dynamically switched or configured according to specific fields in downlink control information (DCI); Configuring FDSS-related parameters that need to be dynamically switched or configured through radio resource control (RRC) configuration and DCI dynamic activation; and configuring the FDSS-related parameters that need to be dynamically switched or configured by indicating, via the DCI, one of a plurality of Peak-to-Average Power Ratio (PAPR) reduction-related methods preset by the network.

17. 17. The method of claim 16, wherein a first value in one specific field of the DCI indicates that FDSS is not used, and a second value in one specific field of the DCI indicates that FDSS is used.

18. The method of claim 17, wherein a spectrum expansion factor is indicated by one specific field in the DCI to indicate whether FDSS is used.

19. The method of claim 16, wherein multiple sets of FDSS-related parameters are preconfigured by the RRC, and one set of FDSS-related parameters is activated by one specific field in the DCI.

20. 17. The method of claim 16, wherein the plurality of PAPR reduction related methods include a related method of FDSS with spectral extension, a related method of FDSS without spectral extension, and a related method of tone reservation TR.

21. In the case of a dynamically scheduled DG PUSCH, instructing the scheduled PUSCH to use one PAPR reduction-related method by scheduling two bits in DCI; The method according to claim 16 or 20, wherein in the case of a configuration grant CG PUSCH, two bits in a DCI are activated to instruct the PUSCH to be activated to use the one PAPR reduction related method.

22. The method of claim 16, wherein the DCI may be a specific DCI or a DCI used for uplink scheduling.

23. The signal measurements or signal statistics are downlink channel state information CSI or uplink CSI; Reference signal received power RSRP of the downlink signal or the uplink signal; a received signal strength indicator RSSI of the downlink or uplink signal; and the number of unsuccessful receptions / retransmissions of a PUSCH transmitted using one or more FDSS-related parameters.

24. The method according to claim 1 or 23, wherein different values ​​or intervals of the signal measurement and the FDSS-related parameters have a predefined or preset association relationship.

25. The method further includes the step of the UE reporting CSI or UE assistance information to a network side device to obtain FDSS-related parameters that are dynamically switched or configured by the UE.

24. The method of claim 1 or 23.

26. The UE may further include reporting UE capability information for dynamically configuring or indicating the FDSS-related parameters to a network side device; The UE capability information Supporting FDSS with or without spectrum extension; Supporting tone reservation with spectrum extension; Supporting FDSS with spectrum spreading and data copying; Supporting FDSS with spectrum extension and no data copying; Supporting FDSS with or without quadrature phase shift keying (QPSK) modulated spectral spread; Supporting FDSS with spectrum extension, where the extension is at PRB or sub-PRB level; The method of claim 1 , wherein the method indicates at least one of:

27. 27. The method of claim 26, wherein whether FDSS with spectrum extension is performed is dynamically configured or indicated by the network only if the UE reports that it supports FDSS with spectrum extension.

28. 28. The method of claim 27, wherein, when whether or not FDSS involves spectrum extension is dynamically configured or indicated by the network side device, whether FDSS is used only in Msg3 PUSCH, or whether FDSS is used in PUSCHs used for uplink transmission, or whether FDSS is used in all PUSCHs is dynamically configured or indicated by the network.

29. 27. The method of claim 26, wherein the UE capability information is determined based on a priority of the UE, indicated by Msg3 information for collision resolution, or indicated by a physical random access channel (PRACH) resource.

30. an acquisition module for acquiring first information; an execution module for dynamically switching or setting FDSS-related parameters, which are parameters for performing uplink transmission based on FDSS, based on the first information acquired by the acquisition module; The first information is an association relationship between the FDSS-related parameters and a first parameter, which is a parameter for performing uplink transmission; First indication information for indicating FDSS-related parameters that need to be dynamically switched or set; and at least one of: a signal measurement or a signal statistic; Frequency domain spectrum shaping FDSS parameter setting device.

31. 30. A user equipment (UE) comprising: a processor; and a memory, wherein the memory stores programs or commands executable by the processor, the programs or commands, when executed by the processor, implementing steps of a method for configuring frequency domain spectral shaping (FDSS) parameters according to any one of claims 1 to 29.

32. A readable storage medium having stored thereon a program or commands that, when executed by a processor, implements the steps of the method for setting frequency domain spectral shaping FDSS parameters according to any one of claims 1 to 29.

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