A method for reducing peak-to-average power ratio (PAPR) and a communication device

Abstract

The embodiment of the application discloses a method for reducing peak-to-average power ratio (PAPR) and a communication device, which are applied to a transmitting system with a power amplifier. In the method, the reserved resource can be determined based on the first unscheduled resource located in the transmission bandwidth and / or the second unscheduled resource located in the guard bandwidth, without using the fixed reserved resource in the traditional technology, so that the flexibility of determining the reserved resource is improved, and the flexibility of reducing the peak-to-average power ratio (PAPR) by using the frequency domain resource reservation (TR) is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communications, and in particular to a method for reducing peak-to-average power ratio (PAPR) and a communication device. BACKGROUND

[0002] In a wireless communication system, a signal to be transmitted is generally converted into a radio frequency signal from an antenna through a baseband module, a digital-to-analog conversion module (or an analog-to-digital conversion module), and a radio frequency module. Among them, the power amplifier (PA) in the radio frequency module is responsible for power amplification of the signal, and the performance of the PA is very sensitive to the amplitude variation of the signal. Generally, the peak-to-average power ratio (PAPR) of the signal is used to measure the amplitude variation of the signal. If the PAPR of the signal is too large, the instantaneous peak value of the signal is easy to exceed the peak value bearing capacity of the PA, and then cause the PA to burn out. Therefore, it is necessary to clip the signal to be transmitted through clipping technology to reduce the PAPR value of the signal within a certain range and ensure the safety of the PA.

[0003] In the traditional technology, the tone reservation (TR) method is generally used to reduce the PAPR. Specifically, the transmitting side generates a peak forcing signal on the system-fixed reserved resource (i.e., TR resource), and superimposes the peak forcing signal on the data signal carrying data to achieve the purpose of reducing the PAPR of the transmitted signal.

[0004] However, the reserved resource in the traditional technology is a fixed frequency domain resource. In a long term evolution (LTE) system and a new radio (NR) system with flexible resource scheduling, reserving a fixed frequency domain resource not only affects the flexibility of the transmitting side in scheduling resources and the flexibility of the reserved resource, but also increases the complexity of the receiving side to a certain extent. SUMMARY

[0005] Embodiments of the present application provide a method for reducing PAPR and a communication device, which are used to improve the flexibility of the reserved resource without increasing the complexity of the receiving side, and then improve the flexibility of the TR method for reducing PAPR.

[0006] Firstly, this application provides a method for reducing the peak-to-average power ratio (PAPR). This method is applied in a communication device with a power amplifier. The communication device can determine reserved resources based on unscheduled resources in the system bandwidth, then generate a forced peak signal based on the reserved resources, and subsequently adjust the PAPR of the data signal to be transmitted based on the forced peak signal. The system bandwidth includes a transmission bandwidth and a guard bandwidth. The transmission bandwidth is located near the center frequency, and the guard bandwidth is located on both sides outside the transmission bandwidth. The unscheduled resources include a first unscheduled resource located in the transmission bandwidth and / or a second unscheduled resource located in the guard bandwidth.

[0007] In this application, since reserved resources can be determined based on first unscheduled resources in the transmission bandwidth and / or second unscheduled resources in the protection bandwidth, without using fixed reserved resources as in conventional technologies, the flexibility in determining reserved resources is improved, thereby increasing the flexibility in reducing the peak-to-average power ratio (PAPR) using the TR (Transmission-Track) approach. Furthermore, since the receiving side (e.g., the terminal device) does not receive data from unscheduled resources (i.e., the first and second unscheduled resources), the scheme of determining reserved resources based on the first unscheduled resources in the transmission bandwidth and / or the second unscheduled resources in the protection bandwidth does not require modification of the receiving side's behavior; only the method of resource reservation on the transmitting side (e.g., the base station) needs modification. Therefore, without increasing the processing complexity on the receiving side, the flexibility in determining reserved resources is improved, thereby increasing the flexibility in reducing the peak-to-average power ratio (PAPR) using the TR approach.

[0008] In one possible implementation, the first unscheduled resource includes unscheduled frequency domain resources in the resources of the data channel, and / or unscheduled frequency domain resources in the resources of the control channel.

[0009] In this embodiment, the unscheduled resources in the transmission bandwidth (i.e., the first unscheduled resources) may include only unscheduled frequency domain resources in the data channel, or only unscheduled frequency domain resources in the control channel, or simultaneously include unscheduled frequency domain resources in both the data channel and the control channel. It should be understood that the first unscheduled resources may be caused by channel allocation resource conflicts or by poor link quality, and this application does not specifically limit the details.

[0010] Exemplarily, the control channel can include one or more of a physical hybrid ARQ indicator channel (PHICH), a physical control format indicator channel (PCFICH), and a physical downlink control channel (PDCCH); and the data channel can be a physical downlink shared channel (PDSCH). In a possible implementation, the communication apparatus can directly determine the unscheduled resources in the system bandwidth as the reserved resources. Optionally, when the unscheduled resources only include the first unscheduled resources, the communication apparatus can determine the first unscheduled resources as the reserved resources. Optionally, when the unscheduled resources only include the second unscheduled resources, the communication apparatus can determine the second unscheduled resources as the reserved resources. Optionally, when the unscheduled resources only include the first unscheduled resources and the second unscheduled resources, the communication apparatus can determine a resource set composed of the first unscheduled resources and the second unscheduled resources as the reserved resources.

[0011] In a possible implementation, the communication apparatus can also select a part of the unscheduled resources in the system bandwidth as the reserved resources based on a certain rule. Specifically, the communication apparatus determines the reserved resources based on the unscheduled resources in the system bandwidth, including: the communication apparatus determines the reserved resources based on the unscheduled resources and first preset resources, wherein the first preset resources are frequency domain resources with a scheduling probability lower than a preset value.

[0012] In this embodiment, it is proposed that the communication apparatus can select a part of the unscheduled resources as the reserved resources by referring to the preset resources (i.e., the first preset resources). The first preset resources are frequency domain resources with a relatively low scheduling probability, and it can also be understood that each subcarrier in the first preset resources has a relatively high probability of not participating in scheduling. Since the unscheduled resources in the transmission bandwidth are not completely the same in different scheduling periods, if the reserved resources are determined by referring to the first preset resources from the unscheduled resources, the resources that are often not involved in scheduling can be screened from the unscheduled resources, which is beneficial to guarantee the relative stability of the determined reserved resources, but will not make the reserved resources determined by the sending side (e.g., a base station) completely unchanged. Therefore, while improving the flexibility of determining the reserved resources, it can also guarantee that the receiving side (e.g., a terminal device) is not affected.

[0013] Optionally, the first preset resources include a plurality of subcarriers, and the number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers is not completely equal.

[0014] Further, if the plurality of subcarriers in the first preset resource are arranged in a non-uniform manner, i.e., the plurality of subcarriers in the first frequency domain resource are arranged in a non-uniform manner, it is beneficial to suppress peak regeneration and improve the efficiency of reducing the peak-to-average power ratio (PAPR).

[0015] In a possible implementation, the first preset resource includes at least one group of continuous frequency domain resources, each group of continuous frequency domain resources includes a plurality of subcarriers with consecutive index values, and the number of subcarriers included in each group of continuous frequency domain resources is not completely equal.

[0016] In this embodiment, it is proposed that there can be continuous subcarriers in the first preset resource, but not all subcarriers are continuous. Since continuous subcarriers are beneficial to improve the efficiency of reducing the peak-to-average power ratio (PAPR), and different groups of frequency domain resources include different subcarriers, which is beneficial to form a non-uniform arrangement manner, avoid peak regeneration, and improve the efficiency of reducing the peak-to-average power ratio (PAPR) to some extent.

[0017] In a possible implementation, the first preset resource includes frequency domain resources not participating in scheduling in a transmission bandwidth and / or frequency domain resources not participating in scheduling in a guard bandwidth.

[0018] In this embodiment, it is proposed that the first preset resource can include frequency domain resources not participating in scheduling in a transmission bandwidth, and can also include frequency domain resources not participating in scheduling in a guard bandwidth. Optionally, the first preset resource can include both of the above frequency domain resources. This embodiment provides multiple ways to determine the first preset resource, and indirectly provides multiple rules to determine the reserved resource, and thus is beneficial to improve the flexibility of determining the reserved resource.

[0019] In a possible implementation, the communication apparatus determines the reserved resource based on the unscheduled resource and the first preset resource, including: the communication apparatus determines the intersection of the unscheduled resource and the first preset resource as the reserved resource.

[0020] In this embodiment, it is proposed that the communication apparatus determines the intersection of the unscheduled resource and the first preset resource as the reserved resource. This embodiment not only ensures that the reserved resource is a frequency domain resource not scheduled in the system bandwidth, but also ensures that the reserved resource is a resource with a low scheduling probability. In addition, the operation of determining the reserved resource by taking the intersection of the unscheduled resource and the first preset resource is simple, and is beneficial to avoid improving the complexity of the communication apparatus in determining the reserved resource.

[0021] In a possible implementation, the second unscheduled resource includes a first frequency domain resource adjacent to the transmission bandwidth in the guard bandwidth, and a quantity of frequency domain resources of the first frequency domain resource is less than a quantity of frequency domain resources in the guard bandwidth. The communication apparatus can determine the reserved resource based on the unscheduled resource in the system bandwidth, and specifically, the communication apparatus can determine the first frequency domain resource in the second unscheduled resource as the reserved resource.

[0022] In this embodiment, it is proposed that the communication apparatus can further determine a part of frequency domain resources (i.e., the first frequency domain resource) in the guard bandwidth adjacent to the transmission bandwidth as the reserved resource, and the first frequency domain resource being adjacent to (or adjacent to) the transmission bandwidth means that there is no frequency domain resource between the first frequency domain resource and the transmission bandwidth. Since the communication apparatus selects the part of frequency domain resources adjacent to the transmission bandwidth in the guard bandwidth as the reserved resource instead of directly using the entire guard bandwidth as the reserved resource, it is not only beneficial to reduce the interference on the signals of other frequency bands (for example, the frequency bands outside the aforementioned system bandwidth), but also beneficial to reduce the requirement of the filter of the transmitting system of the communication apparatus.

[0023] In a possible implementation, after the communication apparatus adjusts the peak-to-average power ratio PAPR of the data signal to be transmitted according to the peak forcing signal, the communication apparatus can further adjust a parameter of the transmitting system to improve the performance of the transmitting system. Specifically, the operating voltage of the power amplifier can be adjusted according to the adjusted peak-to-average power ratio PAPR; or the average transmission power of the data signal can be adjusted according to the adjusted peak-to-average power ratio PAPR.

[0024] In a second aspect, the present application provides another method for reducing the peak-to-average power ratio PAPR, which is applied to a communication apparatus having a power amplifier, and the communication apparatus can determine a reserved resource based on a first type of channel in a transmission bandwidth, and the data and / or signaling of the first type of channel is scheduled to use low-order modulation; the communication apparatus generates a peak forcing signal according to the reserved resource; and then the communication apparatus adjusts the peak-to-average power ratio PAPR of the data signal to be transmitted according to the peak forcing signal.

[0025] In the present application, the data and / or channel transmitted on the resource of the first type channel adopts low-order modulation, and has strong anti-interference capability. Therefore, generating the peak forcing signal on the resource of the first type channel can not only reduce the peak-to-average power ratio (PAPR), but also will not bring great interference to the demodulation process of the receiving side (for example, the terminal device), that is, the receiving side can still demodulate the data signal from the first type channel which carries the data signal and the peak forcing signal. Since the fixed reserved resource in the traditional technology is not used, the flexibility of determining the reserved resource is improved. In addition, since the receiving side (for example, the terminal device) will receive data or signaling through the resource of the first type channel, the use of the resource of the first type channel to determine the reserved resource does not need to modify the behavior of the receiving side (for example, the terminal device).

[0026] In a possible implementation, the resource of the first type channel includes a resource of a data channel and / or a resource of a control channel.

[0027] In the present embodiment, it is proposed that the resource of the first type channel can only contain the frequency domain resource of the data channel, can only contain the frequency domain resource of the control channel, or can contain both the frequency domain resource of the data channel and the frequency domain resource of the control channel.

[0028] In a possible implementation, the communication apparatus can also select a part of the resource of the first type channel as the reserved resource based on a certain rule. Specifically, the communication apparatus determines the reserved resource based on the resource of the first type channel, including: the communication apparatus determines the reserved resource based on the resource of the first type channel and a second preset resource, wherein the second preset resource is a resource with anti-interference capability satisfying a preset condition.

[0029] In the present embodiment, it is proposed that the communication apparatus can refer to the preset resource (that is, the second preset resource) to select a part of the resource of the first type channel as the reserved resource. The second preset resource is a resource with anti-interference capability satisfying a preset condition, and can also be understood as a channel carried by the second preset resource having strong anti-interference capability. Since the resources corresponding to the channels with strong anti-interference capability generated in the transmission bandwidth are not completely the same in different scheduling periods, if the second preset resource is referred to to determine the reserved resource from the resource of the first type channel, the resources with strong anti-interference capability can be screened from the resource of the first type channel, which is beneficial to guarantee the relative stability of the determined reserved resource, but will not make the reserved resource determined by the sending side (for example, the base station) remain unchanged. Therefore, while improving the flexibility of determining the reserved resource, it can also guarantee not to affect the receiving side (for example, the terminal device).

[0030] Optionally, the second preset resource includes a plurality of subcarriers, and the number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers is not completely equal.

[0031] Further, the plurality of subcarriers in the first preset resource are arranged in a non-uniform manner, which is beneficial to suppress peak regeneration and improve the efficiency of reducing the peak-to-average power ratio (PAPR).

[0032] In a possible implementation, the second preset resource includes at least one group of continuous frequency domain resources, each group of continuous frequency domain resources includes a plurality of subcarriers with continuous index values, and the number of subcarriers included in each group of continuous frequency domain resources is not completely equal.

[0033] In this embodiment, it is proposed that the second preset resource can include continuous subcarriers, but not all subcarriers are continuous. Since continuous subcarriers are beneficial to improve the efficiency of reducing the peak-to-average power ratio (PAPR), and different groups of frequency domain resources include different subcarriers, which is beneficial to form a non-uniform arrangement manner, to avoid peak regeneration, and to improve the efficiency of reducing the peak-to-average power ratio (PAPR) to some extent.

[0034] In a possible implementation, the reserved resource is determined based on the resource of the first type of channel and the second preset resource, including: determining the intersection of the resource of the first type of channel and the second preset resource as the reserved resource.

[0035] In this embodiment, it is proposed that the communication apparatus determines the intersection of the unscheduled resource and the second preset resource as the reserved resource. This embodiment can not only ensure that the reserved resource is the resource of the first type of channel (i.e., the resource with low-order modulation), but also ensure that the reserved resource is a resource with strong anti-interference capability. In addition, the operation of determining the reserved resource by taking the intersection of the resource of the first type of channel and the second preset resource is simple, which is beneficial to avoid improving the complexity of the communication apparatus in determining the reserved resource.

[0036] In a possible implementation, the low-order modulation is binary phase shift keying (BPSK) modulation or quadrature phase shift keying (QPSK) modulation.

[0037] In a possible implementation, after the communication apparatus adjusts the peak-to-average power ratio (PAPR) of the data signal to be transmitted according to the peak reduction signal, the communication apparatus can further adjust the parameters of the transmission system to improve the performance of the transmission system. Specifically, the operating voltage of the power amplifier can be adjusted according to the adjusted peak-to-average power ratio (PAPR); or the average transmission power of the data signal can be adjusted according to the adjusted peak-to-average power ratio (PAPR).

[0038] In a third aspect, the present application provides a communication apparatus, comprising a resource selection module and a signal generation module. The resource selection module is configured to determine a reserved resource based on an unscheduled resource in a system bandwidth, the system bandwidth comprising a transmission bandwidth and a guard bandwidth, the unscheduled resource comprising a first unscheduled resource in the transmission bandwidth and / or a second unscheduled resource in the guard bandwidth. The signal generation module is configured to generate a peak forcing signal according to the reserved resource, and adjust a peak-to-average power ratio (PAPR) of a data signal to be transmitted according to the peak forcing signal.

[0039] In the embodiment, the reserved resource can be determined based on the first unscheduled resource in the transmission bandwidth and / or the second unscheduled resource in the guard bandwidth, without using the fixed reserved resource in the conventional technology, so that the flexibility of determining the reserved resource is improved. In addition, the receiving side (e.g., a terminal device) will not receive data in the unscheduled resource (i.e., the first unscheduled resource and the second unscheduled resource) in any case, so that the scheme of determining the reserved resource based on the first unscheduled resource in the transmission bandwidth and / or the second unscheduled resource in the guard bandwidth does not need to modify the behavior of the receiving side, but only needs to modify the way of reserving the resource by the sending side (e.g., a base station), so that the flexibility of determining the reserved resource is improved without increasing the processing complexity of the receiving side.

[0040] In a possible implementation, the first unscheduled resource comprises an unscheduled frequency domain resource in a resource of a data channel and / or an unscheduled frequency domain resource in a resource of a control channel.

[0041] In a possible implementation, the resource selection module is specifically configured to determine the reserved resource based on the unscheduled resource and a first preset resource, the first preset resource being a frequency domain resource with a scheduling probability lower than a preset value, the first preset resource comprising a plurality of subcarriers, and a number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers being not completely equal.

[0042] In a possible implementation, the first preset resource comprises at least one group of continuous frequency domain resources, each group of continuous frequency domain resources comprising a plurality of subcarriers with continuous index values, and a number of subcarriers comprised by each group of continuous frequency domain resources being not completely equal.

[0043] In a possible implementation, the first preset resource comprises a frequency domain resource not participating in scheduling in the transmission bandwidth and / or a frequency domain resource not participating in scheduling in the guard bandwidth.

[0044] In a possible implementation, the resource selection module is specifically configured to determine an intersection of the unscheduled resource and the first preset resource as the reserved resource.

[0045] In a possible implementation, the second unscheduled resource includes a first frequency domain resource adjacent to the transmission bandwidth in the guard bandwidth, and a quantity of frequency domain resources of the first frequency domain resource is less than a quantity of frequency domain resources in the guard bandwidth.

[0046] The resource selection module is specifically configured to determine the first frequency domain resource in the second unscheduled resource as the reserved resource.

[0047] In a possible implementation, the communication apparatus further includes a first adjustment module configured to adjust a working voltage of a power amplifier according to the adjusted peak-to-average power ratio (PAPR), or a second adjustment module configured to adjust an average transmission power of the data signal according to the adjusted peak-to-average power ratio (PAPR).

[0048] It should be noted that the present aspect and the implementations can refer to any one of the implementations and the beneficial effects of the first aspect, which will not be repeated here.

[0049] In a fourth aspect, the present application provides a communication apparatus, including a resource selection module and a signal generation module. The resource selection module is configured to determine a reserved resource based on a resource of a first type channel in a transmission bandwidth, and the first type channel schedules data and / or signaling using low-order modulation. The signal generation module is configured to generate a peak forcing signal according to the reserved resource, and adjust a peak-to-average power ratio (PAPR) of a data signal to be transmitted according to the peak forcing signal.

[0050] In a possible implementation, the resource of the first type channel includes a resource of a data channel and / or a resource of a control channel.

[0051] In a possible implementation, the resource selection module is specifically configured to determine the reserved resource based on the resource of the first type channel and a second preset resource. The second preset resource includes a plurality of subcarriers, and a quantity of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers is not completely equal.

[0052] In a possible implementation, the second preset resource includes at least one group of continuous frequency domain resources. Each group of continuous frequency domain resources includes a plurality of subcarriers with continuous index values, and a quantity of subcarriers included in each group of continuous frequency domain resources is not completely equal.

[0053] In a possible implementation, the resource selection module is specifically configured to determine an intersection of the resource of the first type channel and the second preset resource as the reserved resource.

[0054] In a possible implementation, the low-order modulation is binary phase shift keying (BPSK) modulation or quadrature phase shift keying (QPSK) modulation.

[0055] In a possible implementation, after the peak-to-average power ratio (PAPR) of the data signal to be transmitted is adjusted according to the peak signal, the communication apparatus further includes: a first adjusting module configured to adjust the operating voltage of the power amplifier according to the adjusted peak-to-average power ratio (PAPR); or a second adjusting module configured to adjust the average transmission power of the data signal according to the adjusted peak-to-average power ratio (PAPR).

[0056] It should be noted that the present aspect and the embodiments can refer to any one of the embodiments and the beneficial effects of the second aspect, which will not be repeated here.

[0057] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which can be a network device (for example, a base station) or a building base band unite (BBU) or a building base band chip in the network device. The communication apparatus can include a processing module and a transceiver module. When the communication apparatus is a network device, the processing module can be a processor, and the transceiver module can be a transceiver. The network device can further include a storage module, which can be a memory. The storage module is configured to store instructions, and the processing module executes the instructions stored in the storage module, so that the network device executes the method in the first aspect or any one of the embodiments of the first aspect, or executes the method in the second aspect or any one of the embodiments of the second aspect. When the communication apparatus is a chip in the network device, the processing module can be a processor, and the transceiver module can be an input / output interface, a pin, or a circuit, etc. The processing module executes the instructions stored in the storage module, so that the network device executes the method in the first aspect or any one of the embodiments of the first aspect, or executes the method in the second aspect or any one of the embodiments of the second aspect. The storage module can be a storage module (for example, a register, a cache, etc.) in the chip, or a storage module (for example, a read-only memory, a random access memory, etc.) in the network device and located outside the chip.

[0058] In a sixth aspect, the present application provides a communication apparatus, which can be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled with a memory, and the memory is configured to store a program or instructions, which, when executed by the processor, cause the communication apparatus to execute the method in the first aspect or any one of the embodiments of the first aspect, or execute the method in the second aspect or any one of the embodiments of the second aspect.

[0059] In a seventh aspect, an embodiment of the present application provides a computer program product including instructions, which, when executed on a computer, cause the computer to execute the method introduced in the first aspect and the second aspect, and any one of the embodiments of the foregoing aspects.

[0060] In an eighth aspect, an embodiment of the present application provides a computer readable storage medium, including instructions, when the instructions are executed on a computer, to cause the computer to perform the method as described in the foregoing first aspect and the second aspect, and any one of the various embodiments of the foregoing aspects.

[0061] From the above technical solutions, it can be seen that the embodiments of the present application have the following advantages:

[0062] In the present application, since the reserved resource can be determined based on the first unscheduled resource in the transmission bandwidth and / or the second unscheduled resource in the guard bandwidth without using the fixed reserved resource in the conventional technology, the flexibility of determining the reserved resource is improved. In addition, since the receiving side (e.g., the terminal device) will not receive data in the unscheduled resource (i.e., the first unscheduled resource and the second unscheduled resource) in the first place, the scheme of determining the reserved resource based on the first unscheduled resource in the transmission bandwidth and / or the second unscheduled resource in the guard bandwidth does not need to modify the behavior of the receiving side, only needs to modify the way of reserving the resource by the sending side (e.g., the base station), and thus the processing complexity of the receiving side can be reduced.

[0063] In the present application, since the data and / or channel transmitted on the resource of the first type channel uses low-order modulation and has strong anti-interference capability, generating the peak forcing signal on the resource of the first type channel not only can achieve the effect of reducing the peak-to-average power ratio (PAPR), but also will not bring great interference to the demodulation process of the receiving side (e.g., the terminal device), i.e., the receiving side can still demodulate the data signal from the first type channel which carries the data signal and the peak forcing signal. Since the fixed reserved resource in the conventional technology is not used, the flexibility of determining the reserved resource is improved. In addition, since the receiving side (e.g., the terminal device) will receive data or signaling through the resource of the first type channel in the first place, determining the reserved resource using the resource of the first type channel does not need to modify the behavior of the receiving side (e.g., the terminal device). BRIEF DESCRIPTION OF DRAWINGS

[0064] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application.

[0065] Figure 1 A schematic diagram of the method for reducing the peak-to-average power ratio (PAPR) in the present application;

[0066] Figure 2 A flowchart of the method for reducing the peak-to-average power ratio (PAPR) in the present application;

[0067] Figure 3AAn embodiment diagram of unscheduled resources in a system bandwidth in the present application;

[0068] Figure 3B An embodiment diagram of reserved resources determined in the present application;

[0069] Figure 3C Another embodiment diagram of reserved resources determined in the present application;

[0070] Figure 3D Another embodiment diagram of reserved resources determined in the present application;

[0071] Figure 3E An example diagram of first preset resources in the present application;

[0072] Figure 3F Another embodiment diagram of reserved resources determined in the present application;

[0073] Figure 3G Another embodiment diagram of reserved resources determined in the present application;

[0074] Figure 4 Another flow chart of the method for reducing PAPR in the present application;

[0075] Figure 5A An embodiment diagram of channel resources of a first type in a transmission bandwidth in the present application;

[0076] Figure 5B An example diagram of second preset resources in the present application;

[0077] Figure 5C Another embodiment diagram of reserved resources determined in the present application;

[0078] Figure 6 An embodiment diagram of a communication device in the present application;

[0079] Figure 7 Another embodiment diagram of a communication device in the present application. DETAILED DESCRIPTION

[0080] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0081] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application and above-described drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of the terms so construed herein is merely for convenience and brevity and does not necessarily imply a serial or chronological order unless expressly so defined by the patentee. It is also to be understood that the use of a singular term, such as "comprising", "containing", "including" or "having" and the like, throughout this specification, in the description of a process, method, article or apparatus, or the like, can encompass the inclusion of plural of the referenced item unless the context clearly dictates otherwise. Furthermore, the use of the terms "including", "containing", "comprising", "having" and the like, are used herein to mean including but not limited to, that is, inclusive of, but not limited to, unless explicitly indicated to the contrary.

[0082] The method and communication device for reducing PAPR provided by the present application can be applied to a transmitting system with a power amplifier. For example, the transmitting system in the 5G NR high frequency scenario, and other transmitting systems that can generate a very high PAPR. The communication device can be a network device, such as an access network device, a base station, an access point, etc. The communication device can also be a processing unit (such as a baseband processing unit BBU) or a processing chip (such as a baseband processing chip) in a network device (such as a base station, an access point, etc.).

[0083] The principles of the method for reducing PAPR provided by the present application will be briefly introduced below. Figure 1 The principles of the method for reducing PAPR provided by the present application will be briefly introduced below.

[0084] As shown in Figure 1 , the baseband processing unit in the communication device includes a data signal generation module and a peak forcing signal generation module. The data channel generation module is used to generate a data signal on the resources of the data channel and / or the resources of the control channel on the transmission bandwidth, and the data signal carries the data and / or signaling to be transmitted by the sending side (such as a base station) to the receiving side (such as a terminal device). The peak forcing signal generation module is used to generate a peak forcing signal on the reserved resources. Then, the peak forcing signal is superimposed on the data signal to generate a data signal with reduced PAPR. After digital-to-analog conversion and up-conversion processing, the data signal with reduced PAPR reaches the power amplifier, and is radiated from the antenna after being amplified by the power amplifier.

[0085] Based on the foregoing principles, the present application will reasonably select the reserved resources to reduce the PAPR of the data signal without increasing the processing complexity of the receiving side (such as a terminal device).

[0086] As shown in Figure 2 , an embodiment of the method for reducing PAPR provided by the present application is shown. The communication device will perform the following steps:

[0087] At step 201, determining the reserved resource based on the unscheduled resource in the system bandwidth.

[0088] The system bandwidth is a basic bandwidth of a system deployment determined by a frequency management committee. As shown in the figure, the bandwidth for transmitting useful signals in the system bandwidth is the transmission bandwidth, which is located near the center frequency point. Generally, the transmission bandwidth is smaller than the system bandwidth, and the frequency domain resource part other than the transmission bandwidth in the system bandwidth is generally referred to as the guard bandwidth. The guard bandwidth can be understood as a frequency domain resource that is not used for transmitting signaling or data in order to avoid interference caused by different system bandwidths, and the guard bandwidth is located on both sides of the transmission bandwidth. Figure 3A

[0089] The unscheduled resource refers to a resource that is not used for data or signaling scheduling by the communication device, that is, the communication device as the sending side will not transmit data and / or signaling to the terminal device as the receiving side on the aforementioned unscheduled resource, and the communication device as the sending side will not indicate in other signaling or messages that the terminal device receives data and / or signaling on the unscheduled resource. Since the frequency domain position of the terminal device receiving data or signaling is indicated by the communication device, the terminal device will not receive data or signaling on the frequency domain resource that is not indicated by the aforementioned communication device, and thus the unscheduled resource can also be understood as a frequency domain resource on which the terminal device will not receive data or signaling.

[0090] It should be understood that the unscheduled resource can be variable, that is, the unscheduled resource is not necessarily fixed. Alternatively, the unscheduled resource in the system bandwidth is not necessarily the same in different scheduling periods. For example, in a previous scheduling period, the unscheduled resource in the system bandwidth occupies N resource blocks (RBs), while in a subsequent scheduling period, the unscheduled resource in the system bandwidth occupies M resource blocks (RBs), and the frequency domain positions occupied by the aforementioned N RBs and the aforementioned M RBs in the system bandwidth are not necessarily the same. Wherein N and M are integers greater than 0, and N and M are not necessarily the same.

[0091] Specifically, as shown in the figure, the unscheduled resource includes a first unscheduled resource located in the transmission bandwidth and / or a second unscheduled resource located in the guard bandwidth. The first unscheduled resource can be caused by a conflict of channel allocation resources, or can be caused by not being allocated due to poor link quality, which is not limited by the present application. The second unscheduled resource is a resource in the guard bandwidth that is not involved in scheduling. Figure 3A

[0092] ​​Optionally, the first unscheduled resource includes unscheduled frequency domain resources in resources of a data channel, and / or unscheduled frequency domain resources in resources of a control channel. Specifically, the unscheduled resource (i.e., the first unscheduled resource) in the transmission bandwidth can include only unscheduled frequency domain resources in the data channel, only unscheduled frequency domain resources in the control channel, or both unscheduled frequency domain resources in the data channel and unscheduled frequency domain resources in the control channel, which is not limited herein. Exemplarily, the control channel can include one or more of a physical hybrid ARQ indicator channel (PHICH), a physical control format indicator channel (PCFICH), and a physical downlink control channel (PDCCH); and the data channel can be a physical downlink shared channel (PDSCH).

[0093] It should be understood that, since the unscheduled resource in the transmission bandwidth is not necessarily the same in each scheduling period, the first unscheduled resource determined by the communication apparatus is also not necessarily the same in different scheduling periods. The communication apparatus can determine the scheduling resource based on its own needs, and then reserve the resource based on the determination of the unscheduled resource. Therefore, the scheme proposed in the present application not only does not affect the flexibility of resource scheduling of the communication apparatus, but also improves the flexibility of determining the reserved resource compared with setting a fixed reserved resource.

[0094] In the embodiment, the communication apparatus can determine the reserved resource based on the unscheduled resource in the system bandwidth in various ways, which will be introduced as follows:

[0095] In an optional embodiment, the communication apparatus can directly determine the unscheduled resource in the system bandwidth as the reserved resource. Optionally, as shown in Figure 3B , the communication apparatus can determine the first unscheduled resource as the reserved resource. Optionally, as shown in Figure 3C , the communication apparatus can determine the second unscheduled resource as the reserved resource. Optionally, as shown in Figure 3D , the communication apparatus can determine the resource set composed of the first unscheduled resource and the second unscheduled resource as the reserved resource.

[0096] In the embodiment, the first unscheduled resource and / or the second unscheduled resource determined by the communication apparatus in each scheduling period is not necessarily the same, because the unscheduled resource in each scheduling period is not necessarily the same. Therefore, determining the reserved resource based on the first unscheduled resource and / or the second unscheduled resource is advantageous to improve the flexibility of the communication apparatus in determining the reserved resource, and further improve the flexibility of the TR-based method in reducing the peak-to-average power ratio (PAPR). In addition, because the receiving side (e.g., the terminal device) determines the resources on which the data or signaling is received based on the resource scheduling of the sending side (e.g., the base station), the sending side will not instruct the receiving side to receive the data or signaling on the unscheduled resources, and therefore, the behavior of the receiving side does not need to be modified, and the complexity of the receiving side is not increased.

[0097] In another optional embodiment, the communication apparatus can also select a part of the unscheduled resources in the system bandwidth as the reserved resources based on a certain rule.

[0098] Specifically, the communication apparatus determines the reserved resource based on the unscheduled resource and the first preset resource. The first preset resource is a frequency domain resource with a low scheduling probability, and it can also be understood that each subcarrier in the first preset resource has a high probability of not participating in scheduling. The first preset resource can be determined based on historical scheduling information, and the historical scheduling information is used to indicate the position of the unscheduled time-frequency resource in the scheduling period before the current time. For example, the communication apparatus collects the distribution positions of the unscheduled resources in multiple scheduling periods, and then determines the resources with a high frequency of occurrence as the first preset resource. In addition, the communication apparatus can also determine the frequency domain positions on the system bandwidth which are prone to have scheduled resources based on simulation, and then determine the resources at the foregoing frequency domain positions as the first preset resource. In actual applications, other methods can also be used to determine the foregoing first preset resource, which is not limited herein.

[0099] In addition, the first preset resource includes the frequency domain resource not participating in scheduling in the transmission bandwidth and / or the frequency domain resource not participating in scheduling in the guard bandwidth. For example, the first preset resource includes the frequency domain resource not participating in scheduling in the transmission bandwidth and the frequency domain resource not participating in scheduling in the guard bandwidth. Figure 3EFor example, the system bandwidth contains unscheduled resources a0, a1, a2, a3, a4 and a5. The resource a0 and a5 are frequency domain resources in the guard bandwidth which are not involved in scheduling, and the resources a1, a2, a3 and a4 are frequency domain resources in the transmission bandwidth which are not involved in scheduling. The first preset resource can contain one or more of the aforementioned resources a0, a1, a2, a3, a4 and a5. In one example, the first preset resource includes resources a1, a2, a3 and a4. In another example, the first preset resource includes resources a0 and a5. In another example, the first preset resource includes resources a0, a1, a2, a3, a4 and a5.

[0100] Optionally, the first preset resource includes at least one group of continuous frequency domain resources, each group of continuous frequency domain resources contains a plurality of subcarriers with consecutive index values, and the number of subcarriers contained in each group of continuous frequency domain resources is not necessarily equal. Figure 3E For example, the first preset resource contains resources a0, a1, a2, a3, a4 and a5. At this time, the first preset resource contains five groups of continuous frequency domain resources, and the number of subcarriers contained in the resource a0 is not necessarily equal to the number of subcarriers contained in the resource a1. Similarly, the number of subcarriers contained in other groups of resources is also not necessarily equal.

[0101] Optionally, the first preset resource includes a plurality of subcarriers, and the number of subcarriers between each two adjacent subcarriers in the plurality of subcarriers is not necessarily equal. For example, Figure 3E The number of subcarriers between the first subcarrier in the resource a0 and the first subcarrier in the resource a1 is not necessarily equal to the number of subcarriers between the first subcarrier in the resource a1 and the first subcarrier in the resource a2. In this embodiment, the plurality of subcarriers in the first preset resource are arranged in a non-uniform manner, that is, the plurality of subcarriers in the first frequency domain resource are arranged in a non-uniform manner, which is beneficial to suppress peak regeneration and improve the efficiency of reducing the peak-to-average power ratio (PAPR).

[0102] It should be understood that the frequency domain position of the aforementioned first preset resource can be stored as a template in a communication device, and the communication device stores the frequency domain position of one or more first preset resources. The communication device can store the index value of the resource group, the index value of the resource block or the index value of the subcarrier, which is not limited here.

[0103] For example, the first preset resource in the example Figure 3E can be stored in the communication device in the manner shown in Table 1-1 as follows:

[0104] Table 1-1

[0105]

[0106] For example, the frequency domain location of the first preset resource can also be stored in the communication device in the form of a bitmap.

[0107] It should be understood that in actual applications, the frequency domain location of the first preset resource can be compressed or the like, and thus the application does not limit the storage form of the first preset resource in the communication device.

[0108] In this embodiment, the communication device can select a part of resources from the unscheduled resources as the reserved resources by referring to the preset resource (i.e., the first preset resource). The first preset resource is a frequency domain resource with a relatively low scheduling probability, and it can also be understood that each subcarrier in the first preset resource has a relatively high probability of not participating in scheduling. Since the unscheduled resources in the transmission bandwidth are not completely the same in different scheduling periods, if the reserved resources are determined by referring to the first preset resource from the unscheduled resources, the resources that are often not scheduled can be screened from the unscheduled resources, which is beneficial to guarantee the relative stability of the determined reserved resources, but does not make the reserved resources determined by the sending side (e.g., a base station) remain unchanged. Therefore, while improving the flexibility of determining the reserved resources, the impact on the receiving side (e.g., a terminal device) can also be guaranteed.

[0109] Optionally, the communication device determines the intersection of the unscheduled resources and the first preset resource as the reserved resources. As shown in the example in FIG. 2B, the communication device takes the intersection of the first preset resource in the example in FIG. 2A and the unscheduled resources in the system bandwidth to obtain five groups of resources a0, a1, a2, a4, and a5. The communication device determines the foregoing five groups of resources as the reserved resources. In this embodiment, not only can it be guaranteed that the reserved resources are the unscheduled frequency domain resources in the system bandwidth, but also can it be guaranteed that the reserved resources are resources with a low scheduling probability. In addition, the operation of taking the intersection of the unscheduled resources and the first preset resource to determine the reserved resources is simple, which is beneficial to avoid increasing the complexity of the communication device in determining the reserved resources. Figure 3F Figure 3E In another optional embodiment, the communication device can also select a part of resources from the second unscheduled resources located in the guard bandwidth as the reserved resources. Specifically, the communication device can select the resources close to the transmission bandwidth in the second unscheduled resources as the reserved resources, which is beneficial to reduce the requirement for the filter and the implementation complexity compared to using the second unscheduled resources in the entire guard bandwidth as the reserved resources.

[0110] In another optional embodiment, the communication device can also select a part of resources from the second unscheduled resources located in the guard bandwidth as the reserved resources. Specifically, the communication device can select the resources close to the transmission bandwidth in the second unscheduled resources as the reserved resources, which is beneficial to reduce the requirement for the filter and the implementation complexity compared to using the second unscheduled resources in the entire guard bandwidth as the reserved resources.

[0111] ​like Figure 3G As shown, the second unscheduled resource includes a first frequency domain resource adjacent to the transmission bandwidth within the protection bandwidth, and the amount of the first frequency domain resource is less than the amount of the frequency domain resource within the protection bandwidth. The communication device can determine that the first frequency domain resource in the second unscheduled resource is the reserved resource. Optionally, the first frequency domain resource can be symmetrically distributed with respect to the center frequency point. Since the communication device can further determine a portion of the frequency domain resource (i.e., the first frequency domain resource) adjacent to the transmission bandwidth within the protection bandwidth as the reserved resource, the first frequency domain resource being adjacent (or adjacent) to the transmission bandwidth indicates that there is no frequency domain resource between the first frequency domain resource and the transmission bandwidth. Since the communication device selects a portion of the frequency domain resource adjacent to the transmission bandwidth from the protection bandwidth as the reserved resource, instead of directly using the entire protection bandwidth as the reserved resource, it not only helps to reduce interference to signals in other frequency bands (e.g., frequency bands outside the aforementioned system bandwidth), but also helps to reduce the filter requirements of the communication device's transmission system.

[0112] Step 202: Generate a peak-force signal based on the reserved resources.

[0113] In this embodiment, the communication device will generate a peak signal at the aforementioned reserved resource location.

[0114] Step 203: Adjust the peak-to-average power ratio (PAPR) of the data signal to be transmitted based on the forced peak signal.

[0115] In this embodiment, the communication device superimposes the peak-to-average power ratio (PAPR) signal generated at the aforementioned reserved resources onto the data signal to be transmitted, thereby obtaining a data signal with a reduced PAPR.

[0116] Step 204: Adjust the operating voltage of the power amplifier or the average transmit power of the data signal according to the adjusted peak-to-average power ratio (PAPR).

[0117] In this embodiment, step 204 is an optional step. That is, after the communication device adjusts the peak-to-average power ratio (PAPR) of the data signal to be transmitted according to the forced peak signal, the communication device can also adjust the parameters of the transmission system to improve the performance of the transmission system. The parameters of the transmission system include the operating voltage of the power amplifier and the average transmission power of the data signal.

[0118] In one possible implementation, the power amplifier stores a table showing the correspondence between PAPR levels and operating voltages. If the communication device lowers the PAPR, it can send an adjustment instruction to the power amplifier, instructing it to adjust the operating voltage to the level corresponding to the PAPR, thereby improving the performance of the transmission system.

[0119] For example, the correspondence between PAPR levels and operating voltage in this power amplifier can be shown in Table 2-1:

[0120] Table 2-1

[0121] PAPR Rank 1 Operating Voltage 1 PAPR Rank 2 Operating Voltage 2

[0122] In this application, PAPR level 1 is lower than PAPR level 2, and operating voltage 1 is lower than operating voltage 2. It should be understood that the values ​​of operating voltage 1 and operating voltage 2 are related to the power amplifier in actual application, and this application does not limit the specific values ​​of the operating voltage.

[0123] In another possible implementation, the communication device stores a table relating PAPR level to average transmit power. If the communication device lowers the PAPR, it can reduce the average transmit power of the data signal, allowing the power amplifier to amplify the data signal at a lower average transmit power, thereby improving the performance of the transmission system.

[0124] For example, the correspondence between PAPR level and average transmit power in this power amplifier can be shown in Table 2-2:

[0125] Table 2-2

[0126] PAPR Rank 1 Average Transmit Power 1 PAPR Rank 2 Average Transmit Power 2

[0127] In this application, PAPR level 1 is lower than PAPR level 2, and average transmit power 1 is less than average transmit power 2. It should be understood that the values ​​of average transmit power 1 and average transmit power 2 are related to the power amplifier and baseband processing unit in the communication device in actual application, and this application does not limit the specific value of the operating voltage.

[0128] In this embodiment, since reserved resources can be determined based on the first unscheduled resource in the transmission bandwidth and / or the second unscheduled resource in the protection bandwidth, without using fixed reserved resources as in conventional technologies, the flexibility in determining reserved resources can be improved. Furthermore, since the receiving side (e.g., the terminal device) does not receive data from unscheduled resources (i.e., the first and second unscheduled resources), the scheme of determining reserved resources based on the first unscheduled resource in the transmission bandwidth and / or the second unscheduled resource in the protection bandwidth does not require modification to the behavior of the receiving side; only the method of reserving resources on the sending side (e.g., the base station) needs to be modified. Therefore, the flexibility in determining reserved resources can be improved without increasing the processing complexity of the receiving side.

[0129] like Figure 4 As shown, another embodiment of the method for reducing peak-to-average power ratio (PAPR) provided in this application is described. The communication device performs the following steps:

[0130] At step 401, the reserved resources are determined based on resources of a first type of channel in the transmission bandwidth, data and / or signaling of which is scheduled using low order modulation.

[0131] The low order modulation is a modulation mode with strong anti-interference capability, and thus the resources of the first type of channel can be understood as resources of a channel with anti-interference capability satisfying a preset condition, for example, resources of a channel with strong anti-interference capability. For example, the low order modulation is binary phase shift keying (BPSK) modulation or quadrature phase shift keying (QPSK) modulation.

[0132] In addition, data channels and control channels generally use low order modulation. The resources of the first type of channel can include resources of a data channel and / or resources of a control channel. Specifically, the resources of the first type of channel can include only frequency domain resources of a data channel, only frequency domain resources of a control channel, or both frequency domain resources of a data channel and frequency domain resources of a control channel. For example, the control channel can include one or more of a physical hybrid ARQ indicator channel (PHICH), a physical control format indicator channel (PCFICH), and a physical downlink control channel (PDCCH), and the data channel can be a physical downlink shared channel (PDSCH). As shown in FIG. 3, the resources of the first type of channel can include one or more of resources of the PHICH, resources of the PCFICH, resources of the PDCCH, and resources of the PDSCH. It should be noted that resources of a reference signal (RS) generally do not use low order modulation, and the resources of the first type of channel in this application do not include resources of the RS. Figure 5A

[0133] In this embodiment, the communication device can select a part of the resources of the first type of channel as the reserved resources.

[0134] ​In a possible implementation, the communication apparatus can select one or more RBs as the reserved resources on the resources of the data channel, can select one or more RBs as the reserved resources on the resources of the control channel, and can select multiple RBs as the reserved resources from the resources of the data channel and the resources of the control channel respectively. In addition, the communication apparatus can select the reserved resources in the granularity of RB, in the granularity of subcarrier, or in the granularity of RE, which is not limited here.

[0135] For example, as shown in Figure 5A , the communication apparatus can select one or more RBs as the reserved resources in the resources of the PHICH, can select one or more RBs as the reserved resources in the resources of the PCFICH, can select one or more RBs as the reserved resources in the resources of the PDCCH, and can select one or more RBs as the reserved resources in the resources of the PDSCH.

[0136] For example, as shown in Figure 5A , the communication apparatus can select one or more RBs as the reserved resources in one or more of the resources of the PHICH, the resources of the PCFICH, the resources of the PDCCH, and the resources of the PDSCH.

[0137] In another possible implementation, the communication apparatus can also select a part of the resources of the first type of channel as the reserved resources based on a certain rule.

[0138] Specifically, the communication apparatus determines the reserved resources based on the resources of the first type of channel and second preset resources, where the second preset resources are resources with anti-interference capability satisfying a preset condition. The second preset resources can be determined based on simulation or can be an empirical value, which is not limited here.

[0139] In addition, the second preset resources include the resources of the first type of channel in the transmission bandwidth. For example, Figure 5B , where resource b0 is a part of frequency domain resources in the resources of the PHICH, resource b1 is a part of frequency domain resources in the resources of the PCFICH, resource b2 is a part of frequency domain resources in the resources of the PDCCH, and resource b3 is a part of frequency domain resources in the resources of the PDSCH. Assuming that the second preset resources are a resource set composed of the foregoing resource b0, resource b1, resource b2, and resource b3. At this time, as shown in Figure 5C , the reserved resources can be the intersection of the resources of the first type of channel and the second preset resources, that is, the reserved resources are a resource set composed of the resource b0, resource b1, resource b2, and resource b3.

[0140] Optionally, the second preset resource comprises at least one group of continuous frequency domain resources, each group of continuous frequency domain resources comprises a plurality of subcarriers with continuous index values, and the number of subcarriers comprised by each group of continuous frequency domain resources is not necessarily equal. Figure 5B For example, the second preset resource comprises resource b0, resource b1, resource b2 and resource b3 as shown in the figure. At this time, the second preset resource comprises four groups of continuous frequency domain resources, and the number of subcarriers comprised by resource b0 is not necessarily equal to the number of subcarriers comprised by resource b1. Similarly, the number of subcarriers comprised by other groups of resources is also not necessarily equal.

[0141] It is assumed that the second preset resource is a resource set composed of the aforementioned resource b0, resource b1, resource b2 and resource b3.

[0142] Optionally, the second preset resource comprises a plurality of subcarriers, and the number of subcarriers between every two adjacent subcarriers in the plurality of subcarriers is not necessarily equal. For example, Figure 5B the number of subcarriers between the first subcarrier in resource b0 and the first subcarrier in resource b1 is not necessarily equal to the number of subcarriers between the first subcarrier in resource b1 and the first subcarrier in resource b2. In this embodiment, the plurality of subcarriers in the second preset resource are arranged in a non-equal interval manner, i.e., the plurality of subcarriers in the second frequency domain resource are arranged in a non-uniform manner, which is beneficial to suppress peak regeneration and improve the efficiency of reducing the peak-to-average power ratio (PAPR).

[0143] It should be understood that the frequency domain position of the aforementioned second preset resource can be stored in a communication device as a template, and the communication device stores the frequency domain position of one or more second preset resources. The communication device can store the index value of the resource group, the index value of the resource block or the index value of the subcarrier, which is not limited here.

[0144] For example, the second preset resource in the example Figure 5B may be stored in the communication device in the manner shown in Table 3-1 as follows:

[0145] Table 3-1

[0146]

[0147] For example, the frequency domain position of the second preset resource can also be stored in the communication device in the form of a bitmap.

[0148] It should be understood that in actual application, the frequency domain position of the second preset resource can be compressed and processed, and therefore, the storage form of the second preset resource in the communication device is not limited by the present application.

[0149] Step 402, generating a peak forcing signal according to the reserved resource.

[0150] In this embodiment, the communication device generates a peak forcing signal at the reserved resource.

[0151] Step 403, adjusting the peak to average power ratio (PAPR) of the data signal to be transmitted according to the peak forcing signal.

[0152] In this embodiment, the communication device superimposes the peak forcing signal generated at the reserved resource to the data signal to be transmitted, and obtains a data signal with a reduced peak to average power ratio (PAPR).

[0153] Step 404, adjusting the operating voltage of the power amplifier or the average transmission power of the data signal according to the adjusted peak to average power ratio (PAPR).

[0154] In this embodiment, step 404 is an optional step. That is, after the communication device adjusts the peak to average power ratio (PAPR) of the data signal to be transmitted according to the peak forcing signal, the communication device can further adjust the parameters of the transmission system to improve the performance of the transmission system. The parameters of the transmission system include the operating voltage of the power amplifier and the average transmission power of the data signal.

[0155] In one possible implementation, the power amplifier stores a correspondence table of PAPR level and operating voltage. If the communication device reduces the PAPR, the communication device can send an adjustment indication to the power amplifier to instruct the power amplifier to adjust the operating voltage to the operating voltage corresponding to the PAPR level, so as to improve the operating performance of the transmission system. An example of the correspondence table of PAPR level and operating voltage can be referred to Table 2-1 in step 204, which will not be described herein.

[0156] In another possible implementation, the communication device stores a correspondence table of PAPR level and average transmission power. If the communication device reduces the PAPR, the communication device can reduce the average transmission power of the data signal, so that the power amplifier amplifies the data signal with a lower average transmission power, so as to improve the operating performance of the transmission system. An example of the correspondence table of PAPR level and operating voltage can be referred to Table 2-2 in step 204, which will not be described herein.

[0157] In this embodiment, since the data and / or channel transmitted on the resources of the first type of channel use low-order modulation, the anti-interference capability is strong. Therefore, generating a forced peak signal on the resources of the first type of channel can not only reduce the peak-to-average power ratio (PAPR), but also will not cause significant interference to the demodulation process of the receiving side (e.g., the terminal device). That is, the receiving side can still demodulate the data signal from the first type of channel carrying the data signal and the forced peak signal. Since there is no need to use the fixed reserved resources in conventional technologies, the flexibility of determining reserved resources is improved. In addition, since the receiving side (e.g., the terminal device) will receive data or signaling through the resources of the first type of channel, determining reserved resources using the resources of the first type of channel does not require modifying the behavior of the receiving side (e.g., the terminal device).

[0158] like Figure 6 The diagram shown is a structural schematic of another communication device 60 provided in this embodiment. It should be understood that the aforementioned... Figure 2 or Figure 4 The corresponding method embodiment refers to the network device or the baseband processing unit (BBU) in the network device.

[0159] The communication device 60 includes at least one processor 601, at least one memory 602, at least one transceiver 603, at least one network interface 605, and one or more antennas 604. The processor 601, memory 602, transceiver 603, and network interface 605 are connected via a connection device, and the antenna 604 is connected to the transceiver 603. The aforementioned connection device may include various interfaces, transmission lines, or buses, etc., and this embodiment does not limit its scope.

[0160] The memory 602 is primarily used to store software programs and data. The memory 602 can exist independently and be connected to the processor 601. Optionally, the memory 602 can be integrated with the processor 601, for example, integrated within one or more chips. The memory 602 can store program code that executes the technical solutions of the embodiments of this application, and its execution is controlled by the processor 601. The various types of computer program code being executed can also be considered as drivers for the processor 601. It should be understood that in this embodiment... Figure 6 Only one memory and one processor are shown; however, in practical applications, the communication device 60 may have multiple processors or multiple memories, which is not limited here. Furthermore, the memory 602 may also be referred to as a storage medium or storage device, etc. The memory 602 may be a storage element located on the same chip as the processor (i.e., an on-chip storage element), or it may be a separate storage element; this embodiment of the application does not limit this.

[0161] In this embodiment, the transceiver 603 can be configured to support the receiving or transmitting of radio frequency signals between the communication device 60 and a receiving side (e.g., a terminal device), and the transceiver 603 can be connected with the antenna 604. The transceiver 603 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 604 can receive radio frequency signals, and the receiver Rx of the transceiver 603 is configured to receive the radio frequency signals from the antenna 604 and convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 601 for further processing of the digital baseband signals or digital intermediate frequency signals, such as demodulation processing and decoding processing. In addition, the transmitter Tx in the transceiver 603 is also configured to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 601, and convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through the one or more antennas 604. Specifically, the receiver Rx can selectively perform one or more levels of down-mixing processing and analog-to-digital conversion processing on the radio frequency signals to obtain the digital baseband signals or digital intermediate frequency signals, and the order of the down-mixing processing and analog-to-digital conversion processing can be adjustable. The transmitter Tx can selectively perform one or more levels of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signals or digital intermediate frequency signals to obtain the radio frequency signals, and the order of the up-mixing processing and digital-to-analog conversion processing can be adjustable. The digital baseband signals and the digital intermediate frequency signals can be collectively referred to as digital signals.

[0162] It should be understood that the aforementioned transceiver 603 can also be referred to as a transceiving unit, a transceiver, a transceiving device, etc. Optionally, the devices in the transceiving unit for implementing the receiving function can be regarded as a receiving unit, and the devices in the transceiving unit for implementing the transmitting function can be regarded as a transmitting unit, i.e., the transceiving unit includes a receiving unit and a transmitting unit, the receiving unit can also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0163] In addition, the aforementioned processor 601 is mainly configured to process communication protocols and communication data, and control the entire network device, execute software programs, process data of the software programs, such as for supporting the communication device 60 to perform the actions described in the aforementioned embodiments. The communication device 60 can include a baseband processor and a central processor, wherein the baseband processor is mainly configured to process communication protocols and communication data, and the central processor is mainly configured to control the entire communication device 60, execute software programs, and process data of the software programs. For example, Figure 6The processor 601 can integrate the functions of a baseband processor (e.g., a baseband processing unit, BBU) and a central processing unit (e.g., a CPU). Those skilled in the art will understand that the baseband processor and the central processing unit can also be independent processors interconnected via technologies such as buses. Those skilled in the art will understand that the communication device 60 can include multiple baseband processors to adapt to different network standards, and the communication device 60 can include multiple central processing units to enhance its processing capabilities. The various components of the communication device 60 can be connected via various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The central processing unit can also be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in memory as a software program, with the processor executing the software program to implement the baseband processing function.

[0164] Furthermore, the aforementioned network interface 605 is used to enable the communication device 60 to connect with other communication devices via a communication link. Specifically, the network interface 605 may include a network interface between the communication device 60 and a core network element, such as an S1 interface; the network interface 605 may also include a network interface between the communication device 60 and other network devices (such as other access network devices or core network elements), such as an X2 or Xn interface.

[0165] Specifically, the communication device 60 can be used to perform the aforementioned Figure 2 The method in the corresponding embodiment. Specifically, in the communication device 60, the processor 601 is used to determine reserved resources based on unscheduled resources in the system bandwidth, which includes transmission bandwidth and protection bandwidth. The unscheduled resources include a first unscheduled resource located in the transmission bandwidth and / or a second unscheduled resource located in the protection bandwidth. The processor 601 is used to generate a peak-to-average power ratio (PAPR) signal based on the reserved resources, and to adjust the PAPR of the data signal to be transmitted based on the peak-to-average power ratio (PAPR) based on the peak-to-average power ratio (PAPR). Furthermore, the processor 601 transmits the PAPR-adjusted data signal through the transceiver 603.

[0166] In one possible implementation, the first unscheduled resource includes unscheduled frequency domain resources in the data channel resources and / or unscheduled frequency domain resources in the control channel resources. In this embodiment, the unscheduled resources in the transmission bandwidth (i.e., the first unscheduled resource) may include only unscheduled frequency domain resources in the data channel, only unscheduled frequency domain resources in the control channel, or both unscheduled frequency domain resources in the data channel and the control channel. It should be understood that the first unscheduled resource may be caused by channel allocation resource conflicts or by poor link quality, and this application does not specifically limit its scope.

[0167] In a possible implementation, the processor 601 in the communication apparatus 60 can directly determine the unscheduled resources in the system bandwidth as the reserved resources. Alternatively, when the unscheduled resources only include the first unscheduled resources, the processor 601 can determine the first unscheduled resources as the reserved resources. Alternatively, when the unscheduled resources only include the second unscheduled resources, the processor 601 can determine the second unscheduled resources as the reserved resources. Alternatively, when the unscheduled resources only include the first unscheduled resources and the second unscheduled resources, the processor 601 can determine the reserved resources as a resource set composed of the first unscheduled resources and the second unscheduled resources.

[0168] In a possible implementation, the processor 601 in the communication apparatus 60 can also select a part of the unscheduled resources in the system bandwidth as the reserved resources based on a certain rule. Specifically, the processor 601 determines the reserved resources based on the unscheduled resources and first preset resources, where the first preset resources are frequency domain resources with a scheduling probability lower than a preset value. In this embodiment, it is proposed that the communication apparatus 60 can select a part of the unscheduled resources as the reserved resources by referring to the preset resources (i.e., the first preset resources). The first preset resources are frequency domain resources with a relatively low scheduling probability, and it can also be understood that each subcarrier in the first preset resources has a relatively high probability of not participating in scheduling. Since the unscheduled resources generated in the transmission bandwidth are not completely the same in different scheduling periods, if the reserved resources are determined by referring to the first preset resources from the unscheduled resources, the resources that are not frequently involved in scheduling can be screened from the unscheduled resources, which is beneficial to guarantee the relative stability of the determined reserved resources, but will not make the reserved resources determined by the sending side (e.g., the base station) completely unchanged. Therefore, the flexibility of determining the reserved resources is improved, and the receiving side (e.g., the terminal device) is not affected.

[0169] Alternatively, the first preset resources include a plurality of subcarriers, and the number of subcarriers between every two adjacent subcarriers in the plurality of subcarriers is not completely equal. Further, if the plurality of subcarriers in the first preset resources are arranged in a non-equal interval manner, i.e., the plurality of subcarriers in the first frequency domain resources are arranged in a non-uniform manner, it is beneficial to suppress the peak regeneration and improve the efficiency of reducing the peak-to-average power ratio (PAPR).

[0170] In a possible implementation, the first preset resource includes at least one group of continuous frequency domain resources, each group of continuous frequency domain resources includes a plurality of subcarriers with continuous index values, and the number of subcarriers included in each group of continuous frequency domain resources is not completely equal. In this implementation, it is proposed that there can be continuous subcarriers in the first preset resource, but not all subcarriers are continuous. Since continuous subcarriers are beneficial to improve the efficiency of reducing the peak-to-average power ratio (PAPR), and different groups of frequency domain resources include different numbers of subcarriers, which is beneficial to form an unequal interval arrangement and avoid peak regeneration, and can also improve the efficiency of reducing the peak-to-average power ratio (PAPR) to some extent.

[0171] In a possible implementation, the first preset resource includes frequency domain resources not participating in scheduling in the transmission bandwidth and / or frequency domain resources not participating in scheduling in the guard bandwidth. In this implementation, it is proposed that the first preset resource can include frequency domain resources not participating in scheduling in the transmission bandwidth, or can include frequency domain resources not participating in scheduling in the guard bandwidth. Optionally, the first preset resource can include both of the above frequency domain resources. This implementation provides multiple ways to determine the first preset resource, and indirectly provides multiple rules for determining the reserved resource, and thus is beneficial to improve the flexibility of determining the reserved resource.

[0172] In a possible implementation, the processor 601 in the communication apparatus 60 determines the intersection of the unscheduled resource and the first preset resource as the reserved resource. In this implementation, it is proposed that the communication apparatus 60 determines the intersection of the unscheduled resource and the first preset resource as the reserved resource. This implementation not only ensures that the reserved resource is a frequency domain resource not scheduled in the system bandwidth, but also ensures that the reserved resource is a resource with a low probability of being scheduled. In addition, the operation of determining the reserved resource by taking the intersection of the unscheduled resource and the first preset resource is simple, and is beneficial to avoid increasing the complexity of the communication apparatus 60 in determining the reserved resource.

[0173] In one possible implementation, the second unscheduled resource includes a first frequency domain resource adjacent to the transmission bandwidth within the protection bandwidth, wherein the amount of the first frequency domain resource is less than the amount of the frequency domain resource within the protection bandwidth. Specifically, the communication device 60 determines the reserved resource based on the unscheduled resources in the system bandwidth by identifying the first frequency domain resource within the second unscheduled resource as the reserved resource. In this embodiment, it is proposed that the communication device 60 may further identify a portion of the frequency domain resources (i.e., the first frequency domain resource) immediately adjacent to the transmission bandwidth within the protection bandwidth as the reserved resource. The first frequency domain resource being immediately adjacent (or adjacent to) the transmission bandwidth indicates that there are no frequency domain resources between the first frequency domain resource and the transmission bandwidth. Since the communication device 60 selects a portion of the frequency domain resources immediately adjacent to the transmission bandwidth from the protection bandwidth as the reserved resource, rather than directly using the entire protection bandwidth as the reserved resource, this not only helps reduce interference to signals in other frequency bands (e.g., frequency bands outside the aforementioned system bandwidth) but also reduces the filter requirements of the communication device 60's transmission system.

[0174] In one possible implementation, after adjusting the peak-to-average power ratio (PAPR) of the data signal to be transmitted based on the forced peak signal, the communication device 60 can further adjust the parameters of the transmission system to improve its performance. Specifically, the operating voltage of the power amplifier can be adjusted according to the adjusted PAPR; or, the average transmission power of the data signal can be adjusted according to the adjusted PAPR.

[0175] Specifically, the communication device 60 can be used to perform the aforementioned Figure 4 The method in the corresponding embodiment. Specifically, in the communication device 60, the processor 601 is used to determine reserved resources based on the resources of a first type of channel in the transmission bandwidth, wherein the data and / or signaling scheduled by the first type of channel employs low-order modulation; the processor 601 is used to generate a peak-to-average power ratio (PAPR) signal according to the reserved resources, and to adjust the PAPR of the data signal to be transmitted according to the peak-to-average power ratio (PAPR) signal. Furthermore, the processor 601 transmits the PAPR-adjusted data signal through the transceiver 603.

[0176] In one possible implementation, the resources of the first type of channel include resources of the data channel and / or resources of the control channel. In this embodiment, the resources of the first type of channel may include only the frequency domain resources of the data channel, or only the frequency domain resources of the control channel, or both the frequency domain resources of the data channel and the frequency domain resources of the control channel.

[0177] In a possible implementation, the processor 601 in the communication apparatus 60 can also select a part of the resources of the first type of channel as the reserved resources based on a certain rule. Specifically, the processor 601 determines the reserved resources based on the resources of the first type of channel and second preset resources, where the second preset resources are resources with an interference resistance capability satisfying a preset condition. In this implementation, it is proposed that the communication apparatus 60 can select a part of the resources of the first type of channel as the reserved resources by referring to the preset resources (i.e., the second preset resources). The second preset resources are resources with an interference resistance capability satisfying a preset condition, which can also be understood as resources carrying a channel with a relatively strong interference resistance capability. Since the resources corresponding to the channels with a relatively strong interference resistance capability generated in the transmission bandwidth are not completely the same in different scheduling periods, if the reserved resources are determined by referring to the second preset resources from the resources of the first type of channel, the resources with a relatively strong interference resistance capability can be screened from the resources of the first type of channel, which is conducive to guaranteeing the relative stability of the determined reserved resources, but will not make the reserved resources determined by the sending side (e.g., a base station) completely unchanged. Therefore, while improving the flexibility of determining the reserved resources, the impact on the receiving side (e.g., a terminal device) can also be guaranteed.

[0178] Optionally, the second preset resources include a plurality of subcarriers, and a number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers is not completely equal. Further, the plurality of subcarriers in the first preset resources are arranged in a non-equal interval manner, i.e., the plurality of subcarriers in the first frequency domain resources are arranged in a non-uniform manner, which is conducive to suppressing peak regeneration and improving the efficiency of reducing the peak-to-average power ratio (PAPR).

[0179] In a possible implementation, the second preset resources include at least one group of continuous frequency domain resources, each group of continuous frequency domain resources includes a plurality of subcarriers with continuous index values, and a number of subcarriers included in each group of continuous frequency domain resources is not completely equal. In this implementation, it is proposed that there can be continuous subcarriers in the second preset resources, but not all subcarriers are continuous. Since continuous subcarriers are conducive to improving the efficiency of reducing the peak-to-average power ratio (PAPR), and different groups of frequency domain resources include different numbers of subcarriers, which is conducive to forming a non-equal interval arrangement manner, avoiding peak regeneration, and improving the efficiency of reducing the peak-to-average power ratio (PAPR) to some extent.

[0180] In a possible implementation, the processor 601 in the communication apparatus 60 determines the intersection of the resources of the first type of channel and the second preset resources as the reserved resources. In this implementation, the intersection of the unscheduled resources and the second preset resources is determined as the reserved resources by the communication apparatus 60. In this implementation, the reserved resources are not only the resources of the first type of channel (i.e., the resources with low order modulation), but also the resources with strong anti-interference capability. In addition, the operation of determining the reserved resources by taking the intersection of the resources of the first type of channel and the second preset resources is simple, which is conducive to avoiding increasing the complexity of determining the reserved resources by the communication apparatus 60.

[0181] In a possible implementation, the low order modulation is binary phase shift keying (BPSK) modulation or quadrature phase shift keying (QPSK) modulation. In a possible implementation, after adjusting the peak-to-average power ratio (PAPR) of the data signal to be transmitted according to the peak forcing signal, the communication apparatus 60 can further adjust the parameters of the transmission system to improve the performance of the transmission system. Specifically, the working voltage of the power amplifier can be adjusted according to the adjusted peak-to-average power ratio (PAPR); or the average transmission power of the data signal can be adjusted according to the adjusted peak-to-average power ratio (PAPR).

[0182] The remaining parts can refer to the communication apparatus or the method of the sending side in the above-mentioned embodiments, which will not be repeated here.

[0183] As shown in Figure 7 , the present application further provides another communication apparatus 70, which can be a network device or a chip in a network device. Optionally, the network device is an access network device. The communication apparatus 70 includes a resource selection module 701 and a signal generation module 702.

[0184] Specifically, the communication apparatus 70 can be used to perform the method in the above-mentioned Figure 2 corresponding embodiments. Specifically, the resource selection module 701 is configured to determine the reserved resources based on unscheduled resources in a system bandwidth, the system bandwidth including a transmission bandwidth and a guard bandwidth, the unscheduled resources including first unscheduled resources located in the transmission bandwidth and / or second unscheduled resources located in the guard bandwidth; and the signal generation module 702 is configured to generate a peak forcing signal according to the reserved resources, and adjust a peak-to-average power ratio (PAPR) of a data signal to be transmitted according to the peak forcing signal.

[0185] In the embodiment, the reserved resource can be determined based on the first unscheduled resource in the transmission bandwidth and / or the second unscheduled resource in the guard bandwidth without using the fixed reserved resource in the conventional technology, so that the flexibility of determining the reserved resource is improved. In addition, since the receiving side (e.g., the terminal device) will not receive data in the unscheduled resource (i.e., the first unscheduled resource and the second unscheduled resource) in any case, the scheme of determining the reserved resource based on the first unscheduled resource in the transmission bandwidth and / or the second unscheduled resource in the guard bandwidth does not need to modify the behavior of the receiving side, but only needs to modify the way of reserving the resource by the sending side (e.g., the base station), so that the flexibility of determining the reserved resource is improved without increasing the processing complexity of the receiving side.

[0186] In a possible implementation, the first unscheduled resource includes an unscheduled frequency domain resource in a resource of a data channel and / or an unscheduled frequency domain resource in a resource of a control channel.

[0187] In a possible implementation, the resource selection module 701 is specifically configured to determine the reserved resource based on the unscheduled resource and a first preset resource, the first preset resource being a frequency domain resource with a scheduling probability lower than a preset value, the first preset resource including a plurality of subcarriers, and a number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers being not completely equal.

[0188] In a possible implementation, the first preset resource includes at least one group of continuous frequency domain resources, each group of continuous frequency domain resources containing a plurality of subcarriers with continuous index values, and a number of subcarriers contained in each group of continuous frequency domain resources being not completely equal.

[0189] In a possible implementation, the first preset resource includes a frequency domain resource not participating in scheduling in the transmission bandwidth and / or a frequency domain resource not participating in scheduling in the guard bandwidth.

[0190] In a possible implementation, the resource selection module 701 is specifically configured to determine an intersection of the unscheduled resource and the first preset resource as the reserved resource.

[0191] In a possible implementation, the second unscheduled resource includes a first frequency domain resource adjacent to the transmission bandwidth in the guard bandwidth, and a quantity of frequency domain resources of the first frequency domain resource is less than a quantity of frequency domain resources in the guard bandwidth. The resource selection module 701 is specifically configured to determine the first frequency domain resource in the second unscheduled resource as the reserved resource.

[0192] In a possible implementation, the communication apparatus 70 further includes a first adjusting module 703 configured to adjust the working voltage of the power amplifier according to the adjusted peak-to-average power ratio PAPR, or a second adjusting module 704 configured to adjust the average transmission power of the data signal according to the adjusted peak-to-average power ratio PAPR.

[0193] It should be noted that the beneficial effects of the various embodiments in the present embodiment are described above Figure 6 Corresponding embodiments are not described here.

[0194] Specifically, the communication apparatus 70 can be configured to perform the method in the foregoing Figure 4 Corresponding embodiments. The resource selection module 701 is configured to determine the reserved resource based on the resources of the first type of channel in the transmission bandwidth, and the data and / or signaling scheduled by the first type of channel adopts low-order modulation. The signal generation module 702 is configured to generate a peak forcing signal according to the reserved resource, and adjust the peak-to-average power ratio PAPR of the data signal to be transmitted according to the peak forcing signal.

[0195] In a possible implementation, the resources of the first type of channel include the resources of a data channel and / or the resources of a control channel.

[0196] In a possible implementation, the resource selection module 701 is specifically configured to determine the reserved resource based on the resources of the first type of channel and a second preset resource, and the second preset resource includes a plurality of subcarriers, and the number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers is not completely equal.

[0197] In a possible implementation, the second preset resource includes at least one group of continuous frequency domain resources, each group of continuous frequency domain resources contains a plurality of subcarriers with consecutive index values, and the number of subcarriers contained in each group of continuous frequency domain resources is not completely equal.

[0198] In a possible implementation, the resource selection module 701 is specifically configured to determine the intersection of the resources of the first type of channel and the second preset resource as the reserved resource.

[0199] In a possible implementation, the low-order modulation is binary phase shift keying BPSK modulation or quadrature phase shift keying QPSK modulation.

[0200] In a possible implementation, after adjusting the peak-to-average power ratio PAPR of the data signal to be transmitted according to the peak forcing signal, the communication apparatus 70 further includes a first adjusting module 703 configured to adjust the working voltage of the power amplifier according to the adjusted peak-to-average power ratio PAPR, or a second adjusting module 704 configured to adjust the average transmission power of the data signal according to the adjusted peak-to-average power ratio PAPR.

[0201] It should be noted that the beneficial effects of the various embodiments in the present embodiment are described above Figure 6 Corresponding embodiments are not described here.

[0202] In the implementation process, each step of the above method can be completed by the integrated logic circuit of hardware in the processor or the instruction in the form of software. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware processor execution completion, or executed by hardware and software modules in the processor. The software module can be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here. It should also be understood that the first, second and various numerical numbers involved herein are only for the convenience of differentiation, and do not limit the scope of the embodiments of the present application.

[0203] In addition, the present application provides a computer program product including one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the flow or function according to the embodiments of the present application is generated in whole or in part. For example, the method related to the communication device in the foregoing Figure 2 is implemented. For another example, the method related to the communication device in the foregoing Figure 4 is implemented. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that the computer can store or be integrated into a server, data center and other data storage devices containing one or more available media. The available medium can be a magnetic medium (for example, floppy disk, hard disk, magnetic tape), an optical medium (for example, digital versatile disc (DVD)) or a semiconductor medium (for example, solid state disk (SSD)) and the like.

[0204] In addition, the application further provides a computer readable storage medium, the storage medium stores a computer program, the computer program is executed by a processor to realize the method related to the communication device in the foregoing Figure 2 or Figure 4 .

[0205] It should be understood that the term "and / or" herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, data and / or signaling, which can represent the three cases of data alone, data and signaling together, and signaling alone. In addition, the character " / " herein generally represents that the front and rear associated objects are in an "or" relationship.

[0206] It should be understood that in various embodiments of the application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the application.

[0207] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-mentioned system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0208] The above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A method for reducing a peak-to-average power ratio (PAPR), comprising: The method is applied to a transmitting system with a power amplifier at a network side, and the method comprises the following steps: determining a reserved resource based on an unscheduled resource in a system bandwidth, the system bandwidth comprising a transmission bandwidth and a guard bandwidth, the unscheduled resource comprising a first unscheduled resource located in the transmission bandwidth and / or a second unscheduled resource located in the guard bandwidth, the first unscheduled resource comprising an unscheduled frequency domain resource in a resource of a data channel, and / or an unscheduled frequency domain resource in a resource of a control channel; generating a peak forcing signal according to the reserved resource; adjusting a peak-to-average power ratio (PAPR) of a data signal to be transmitted according to the peak forcing signal; the step of determining the reserved resource based on the unscheduled resource in the system bandwidth comprises: determining the reserved resource based on the unscheduled resource and a first preset resource, the first preset resource being a frequency domain resource with a scheduling probability lower than a preset value, the first preset resource comprising a plurality of subcarriers, and a number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers being not completely equal.

2. The method of claim 1, wherein, the first preset resource comprises at least one group of continuous frequency domain resources, each group of continuous frequency domain resources containing a plurality of subcarriers with continuous index values, and a number of subcarriers contained in each group of continuous frequency domain resources being not completely equal.

3. The method of claim 1, wherein, the first preset resource comprises a frequency domain resource not participating in scheduling located in the transmission bandwidth and / or a frequency domain resource not participating in scheduling located in the guard bandwidth.

4. The method according to any one of claims 1 to 3, characterized in that, the step of determining the reserved resource based on the unscheduled resource and the first preset resource comprises: determining an intersection of the unscheduled resource and the first preset resource as the reserved resource.

5. The method of claim 1, wherein, the second unscheduled resource comprises a first frequency domain resource adjacent to the transmission bandwidth in the guard bandwidth, and a frequency domain resource amount of the first frequency domain resource being less than a frequency domain resource amount in the guard bandwidth; the step of determining the reserved resource based on the unscheduled resource in the system bandwidth comprises: determining the first frequency domain resource in the second unscheduled resource as the reserved resource.

6. The method according to any one of claims 1 to 3, characterized in that, after the step of adjusting the peak-to-average power ratio (PAPR) of the data signal to be transmitted according to the peak forcing signal, the method further comprises: adjusting a working voltage of the power amplifier according to the adjusted peak-to-average power ratio (PAPR); or adjusting an average transmission power of the data signal according to the adjusted peak-to-average power ratio (PAPR). The method is applied to a transmitting system with a power amplifier at a network side, and the method comprises the following steps:

7. A method for reducing a peak-to-average power ratio (PAPR), the method comprising: determining a reserved resource based on a resource of a first type channel in a transmission bandwidth, the first type channel scheduling data and / or signaling adopting low-order modulation, the resource of the first type channel comprising a resource of a data channel and / or a resource of a control channel; generating a peak forcing signal according to the reserved resource; adjusting a peak-to-average power ratio (PAPR) of a data signal to be transmitted according to the peak forcing signal; the step of determining the reserved resource based on the resource of the first type channel in the transmission bandwidth comprises: ​ The reserved resource is determined based on the resource of the first type of channel and second preset resource, the second preset resource being frequency domain resource with a scheduling probability lower than a preset value, the second preset resource including a plurality of subcarriers, a number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers being not completely equal.

8. The method of claim 7, wherein, The second preset resource includes at least one group of continuous frequency domain resources, each group of continuous frequency domain resources including a plurality of subcarriers with continuous index values, and a number of subcarriers included in each group of continuous frequency domain resources being not completely equal.

9. The method of claim 7, wherein, The reserved resource is determined based on the resource of the first type of channel and second preset resource, the second preset resource being frequency domain resource with a scheduling probability lower than a preset value, the second preset resource including a plurality of subcarriers, a number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers being not completely equal. The intersection of the resource of the first type of channel and the second preset resource is determined as the reserved resource.

10. The method according to any one of claims 7 to 9, characterized in that, The low-order modulation is binary phase shift keying (BPSK) modulation or quadrature phase shift keying (QPSK) modulation.

11. The method according to any one of claims 7 to 9, characterized in that, After adjusting the peak-to-average power ratio (PAPR) of the data signal to be transmitted according to the peak forcing signal, the method further includes: adjusting a working voltage of a power amplifier according to the adjusted peak-to-average power ratio (PAPR); or adjusting an average transmission power of the data signal according to the adjusted peak-to-average power ratio (PAPR). The apparatus is applied to a transmission system with a power amplifier at a network side, and includes:

12. A communications device, characterized by a resource selection module configured to determine a reserved resource based on unscheduled resources in a system bandwidth, the system bandwidth including a transmission bandwidth and a guard bandwidth, the unscheduled resources including first unscheduled resources located in the transmission bandwidth and / or second unscheduled resources located in the guard bandwidth, the first unscheduled resources including unscheduled frequency domain resources in resources of a data channel and / or unscheduled frequency domain resources in resources of a control channel; a signal generation module configured to generate a peak forcing signal according to the reserved resource; the signal generation module is further configured to adjust a peak-to-average power ratio (PAPR) of a data signal to be transmitted according to the peak forcing signal; the resource selection module is specifically configured to determine the reserved resource based on the unscheduled resources and first preset resources, the first preset resources being frequency domain resources with a scheduling probability lower than a preset value, the first preset resources including a plurality of subcarriers, a number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers being not completely equal. The first preset resources include at least one group of continuous frequency domain resources, each group of continuous frequency domain resources including a plurality of subcarriers with continuous index values, and a number of subcarriers included in each group of continuous frequency domain resources being not completely equal.

13. The communication apparatus according to claim 12, wherein The first preset resources include unscheduled frequency domain resources located in the transmission bandwidth and / or unscheduled frequency domain resources located in the guard bandwidth.

14. The communication apparatus according to claim 12, wherein The resource selection module is specifically configured to determine the intersection of the unscheduled resources and the first preset resources as the reserved resource.

15. The communication apparatus according to any one of claims 12-14, wherein, The second unscheduled resources include first frequency domain resources adjacent to the transmission bandwidth in the guard bandwidth, a frequency domain resource amount of the first frequency domain resources being less than a frequency domain resource amount in the guard bandwidth.

16. The communication apparatus according to claim 12, wherein The resource selection module is specifically configured to determine the first frequency domain resources in the second unscheduled resources as the reserved resource. The communication apparatus further includes:

17. The communication apparatus according to any one of claims 12-14, wherein, ​ The first adjusting module is configured to adjust the working voltage of the power amplifier according to the adjusted peak-to-average power ratio (PAPR). Alternatively, The second adjusting module is configured to adjust the average transmission power of the data signal according to the adjusted peak-to-average power ratio (PAPR).

18. A communications device, characterized by The application is applied to a transmitting system with a power amplifier at a network side, and the device comprises: The resource selection module is configured to determine the reserved resource based on the resource of the first type of channel in the transmission bandwidth, the data and / or signaling scheduled by the first type of channel adopting low-order modulation, and the resource of the first type of channel comprising the resource of a data channel and / or the resource of a control channel; The signal generation module is configured to generate a peak forcing signal according to the reserved resource; The signal generation module is further configured to adjust the peak-to-average power ratio (PAPR) of the data signal to be transmitted according to the peak forcing signal; The resource selection module is specifically configured to determine the reserved resource based on the resource of the first type of channel and a second preset resource, the second preset resource being a frequency domain resource with a scheduling probability lower than a preset value, and the second preset resource comprising a plurality of subcarriers, the number of subcarriers spaced between every two adjacent subcarriers in the plurality of subcarriers being not completely equal.

19. The communication apparatus according to claim 18, wherein The second preset resource comprises at least one group of continuous frequency domain resources, each group of continuous frequency domain resources containing a plurality of subcarriers with continuous index values, and the number of subcarriers contained by each group of continuous frequency domain resources being not completely equal.

20. The communication apparatus according to claim 18, wherein, The resource selection module is specifically configured to determine the intersection of the resource of the first type of channel and the second preset resource as the reserved resource.

21. The communication apparatus according to any one of claims 18-20, wherein, The low-order modulation is binary phase shift keying (BPSK) modulation or quadrature phase shift keying (QPSK) modulation.

22. The communication apparatus according to any one of claims 18-20, wherein, After the peak-to-average power ratio (PAPR) of the data signal to be transmitted is adjusted according to the peak forcing signal, the communication device further comprises: The first adjusting module is configured to adjust the working voltage of the power amplifier according to the adjusted peak-to-average power ratio (PAPR). Alternatively, The second adjusting module is configured to adjust the average transmission power of the data signal according to the adjusted peak-to-average power ratio (PAPR).

23. A communications device, characterized by The device comprises a processor and a memory; The memory stores a computer program; The processor invokes the computer program to enable the communication device to perform the method of any one of claims 1 to 6 or the method of any one of claims 7 to 11.

24. A computer readable storage medium storing instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 6 or the method of any one of claims 7 to 11.

25. A computer program product containing instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 6 or the method of any one of claims 7 to 11.

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