WO2018058855A1

WO2018058855A1 - Data transmission method, device and system

Info

Publication number: WO2018058855A1
Application number: PCT/CN2017/070281
Authority: WO
Inventors: 焦淑蓉; 花梦; 胡文权; 铁晓磊
Original assignee: 华为技术有限公司
Priority date: 2016-09-30
Filing date: 2017-01-05
Publication date: 2018-04-05
Also published as: CN109479310A; CN113473618A; CN109479310B

Abstract

Disclosed in an embodiment of the invention are a data transmission method, device and system. The method comprises: a base station generating first indication information, the first indication information indicating a requirement of a spectrum to be used by a terminal for transmitting uplink data; and the base station transmitting the first indication information to the terminal. The embodiment of the invention can reduce out-of-band energy leakage of a signal transmitted in a 5G communication system.

Description

Data transmission method, device and system

Technical field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, device, and system.

Background technique

Currently, according to the 3rd Generation Partnership Project (3GPP) discussion on the fifth generation of mobile communication technology (5-Generation, 5G), 5G technology will still adopt Orthogonal Frequency Division (Orthogonal Frequency Division). Multiplexing, OFDM) waveforms, then the sub-carrier spacing is selected in the frame structure design; on the other hand, 5G technology needs to support at least three services, such as: enhanced mobile broadband (eMBB), massive Different types of subcarrier spacing are different for different services, such as Massive Machine-Type Communications (mMTC) and Ultra-Reliable and Low-Latency Communications (URLLC). In a 5G communication system, subcarriers with different subcarrier spacings exist on the same carrier. However, OFDM waveforms with different subcarrier spacings are placed adjacent to each other on the same carrier. Due to the inherent out-of-band energy leakage of the OFDM signal, waveforms for different subcarrier spacings may interfere with each other. In addition, 5G communication systems require higher spectral efficiency than Long Term Evolution (LTE) systems, which also imposes higher requirements for out-of-band energy leakage of transmitted signals in 5G communication systems.

Summary of the invention

The embodiment of the invention discloses a data transmission method, device and system, which can transmit the indication information carrying the spectrum requirement to the terminal, and guide the terminal to process the uplink to-be-transmitted signal according to the spectrum requirement, so as to reduce the signal transmitted in the 5G communication system. Out-of-band energy leaks.

The first aspect of the embodiment of the present invention discloses a data transmission method, where the method is applied to a process in which a base station performs uplink data scheduling on a terminal, where the method includes: the base station generates first indication information, and the first indication information The spectrum required to indicate that the terminal performs uplink data transmission The base station sends the first indication information to the terminal.

After the base station sends the first indication information to the terminal, the terminal may use the frequency domain filtering technology to filter the transmission signal according to the spectrum requirement, or use the time domain windowing technology to perform window processing on the transmission signal, so that the terminal can satisfy The requirement for Out Of Band (OOB), the spectrum requirement, reduces the out-of-band energy leakage of the transmitted signal in the 5G communication system.

In a possible implementation, the first indication information is specifically used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the first indication information is specifically used to define a single spectrum emission template. Side or bilateral spectral indicators.

For the first spectrum transmission template, each spectrum requirement corresponds to one spectrum emission template, and the first spectrum emission template is preset in advance, wherein the first spectrum emission template mainly includes three types, the first type: The spectrum indicators are defined on both sides (left and right) of a spectrum emission template, that is, the out-of-band energy leakage on both sides of the first spectrum emission template needs to be suppressed; second: the first spectrum emission template The left side of the spectrum needs to be limited, that is, the out-of-band energy leakage on the left side of the first spectrum emission template needs to be suppressed; the third type: the right side of the first spectrum emission template needs to be defined by the spectrum index, that is, the first The out-of-band energy leakage on the right side of a spectrum emission template needs to be suppressed.

For the second spectrum transmission template, the second spectrum transmission template is a total spectrum transmission template, and may be used according to a single-sided or two-side spectrum indicator of the second spectrum transmission template defined by different spectrum requirements. The spectrum emission template is processed to obtain the spectrum emission template required by the current terminal.

In a possible implementation manner, the method further includes: determining, by the base station, a frequency domain resource that is used by the terminal to perform uplink data transmission; and determining, by the base station, that the terminal needs to adopt according to the frequency domain resource. Spectrum requirements; the base station generates the first indication information to indicate the spectrum requirement. The frequency domain resource is also a subcarrier that is used when the terminal performs uplink data transmission, in other words, on which subcarriers the terminal transmits an uplink signal.

In a possible implementation, the determining, by the base station, the spectrum requirement that the terminal needs to adopt according to the frequency domain resource, including: the base station according to a first subband in a system bandwidth of the base station, and Determining the spectrum requirement by the first location where the first subcarrier corresponding to the frequency domain resource is located, The system bandwidth includes at least one subband, and the first subband includes at least one subcarrier.

In a possible implementation manner, the first subband includes a plurality of consecutive subcarriers, and subcarrier spacings between adjacent ones of the plurality of consecutive subcarriers are equal.

In a possible implementation, if the system bandwidth includes an uplink frequency band and a downlink frequency band, the first sub-band is at least a part of the uplink frequency band.

In a possible implementation manner, the spectrum requirements are classified into at least three categories according to a degree of limitation on a one-sided or two-side spectrum indicator of the second spectrum transmission template, including: a first type of spectrum requirement, and a second Class spectrum requirements and third class spectrum requirements.

In a possible implementation, the first type of spectrum requirement and the third type of spectrum requirement are used to perform spectrum indicators on both sides of the second spectrum transmission template when the terminal performs uplink data transmission. Defining, and the third type of spectrum requires that the spectrum indicators of the two sides of the second spectrum transmission template are less defined than the spectrum indicators of the two sides of the second spectrum transmission template. The second type of spectrum is required to define a spectrum indicator of one side of the second spectrum transmission template when the terminal performs uplink data transmission.

In a possible implementation manner, the base station determines the spectrum according to a first location where a first subcarrier corresponding to the frequency domain resource is located in a first subband in a system bandwidth of the base station. The request includes: when the terminal is allocated to all frequency domain resources of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located occupies the first subband All of the locations, the base station determines that the spectrum requirement that the terminal needs to adopt is the first type of spectrum requirement or the plurality of the second type of spectrum requirements; or, the terminal is allocated to the first subband In the case of the frequency domain resource on the edge side, the first location where the first subcarrier corresponding to the frequency domain resource is located is located on the edge side of the first subband, and the base station determines according to the first location The spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement; or, in the case that the terminal is allocated to the intermediate frequency domain resource of the first sub-band, corresponding to the frequency domain resource The first location where the first subcarrier is located is located Said first intermediate sub-band, the base station determines the frequency spectrum requirements for the terminal needs to use the spectrum requirements for the third category.

In this optional implementation manner, the frequency domain resource used by the terminal for uplink data transmission The first location of the corresponding first subcarrier is indeterminate, and the requirements of the spectrum emission template are different for different locations. For example, if the first location is located at the edge of the subband (ie, the left or the right side) in the system bandwidth, the 5G communication system has higher requirements for the spectrum emission template, and cannot correspond to adjacent subbands or adjacent system bands. The frequency domain resources required by the terminal to bring interference;

Therefore, the base station can determine different spectrum requirements according to different first positions, and design different filter coefficients according to the spectrum requirements, respectively form frequency domain filters of different shapes, and filter the uplink to-be-transmitted signals by using filters. Alternatively, different time domain window functions may be designed according to the specific location of the frequency domain resource used by the terminal to transmit data, and the uplink to-be-transmitted signal is windowed. It can be seen that the above technical solution can ensure the EVM index and improve the performance of the receiving end under the premise of satisfying the spectrum requirement and reducing the out-of-band energy leakage of the transmitted signal in the 5G communication system.

In a possible implementation manner, the base station determines the spectrum according to a first location where a first subcarrier corresponding to the frequency domain resource is located in a first subband in a system bandwidth of the base station. The request includes: when the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the first sub In the middle of the band, the base station determines that the spectrum requirement that the terminal needs to adopt is that the second spectrum transmission template is not required to perform uplink data transmission on the terminal.

In this alternative embodiment, the first location is located in the middle of the subband in the system bandwidth, and the 5G communication system has a relatively low requirement for the spectrum emission template because the OFDM waveform itself is orthogonal in the frequency domain, The frequency domain resources used by the terminal corresponding to the subcarriers of the same subcarrier interval are affected. In this case, the base station can determine that the spectrum requirement that the terminal needs to adopt is the second spectrum when the terminal does not need to send uplink data. The launch template is qualified.

In a possible implementation manner, the determining, by the base station, the spectrum requirement that the terminal needs to adopt according to the first location is that the second type of spectrum requirement includes: the base station calculating the first location and the first a distance of the edge of the sub-band; the base station determines a range to which the distance belongs; and the base station determines, according to the correspondence between the range and the spectrum requirement, the spectrum requirement corresponding to the range as the location that the terminal needs to adopt The second type of spectrum requirements.

Wherein the second type of spectrum requirement may include multiple spectrum requirements, and the base station may be based on the first location The range of the distance on the edge side of the first sub-band determines the second type of spectrum requirement, for example, the range 1 is greater than the range 2, and the spectrum requirement corresponding to the range 1 corresponds to the suppression of the out-of-band energy leakage on one side. The spectrum requirements are less effective in suppressing out-of-band energy leakage on one side. In addition, the degree of different suppression of one-side out-of-band energy leakage can be achieved by looking up the table and the difference in values.

In a possible implementation, the method further includes: the base station is in a second position in the system bandwidth according to a first subcarrier corresponding to the frequency domain resource, and a subband in the system bandwidth Allocating information to determine the first location; the allocation information is used to indicate a number of subbands in the system bandwidth, and subcarriers included in each of the subbands.

In a possible implementation, the method further includes: the base station transmitting, to the terminal, second indication information that carries the second location, where the second indication information is used to indicate that the terminal is in the A signal is transmitted on the first subcarrier of the second location.

In a possible implementation manner, the sending, by the base station, the first indication information to the terminal includes: sending, by the base station, the first indication information to the terminal by using a preset bit.

The first indication information may be sent in the downlink control information DCI.

In a possible implementation, the first indication information is used to indicate that the first number of subcarriers do not carry data on a specified location of the first subcarrier corresponding to the frequency domain resource allocated by the base station to the terminal. .

For example, assume that the first number of subcarriers are reserved on one side (left or right side) of the first subcarrier without carrying data, which implies that the spectrum requirement to be used is the second type of spectrum requirement (for The left or right side of the spectrum emission template); it is also assumed that the subcarrier is not reserved on the first subcarrier, which implies that the required spectrum requirement is the third type of spectrum requirement or does not require the spectrum requirement; Retaining the first number of subcarriers on both sides of the first subcarrier does not carry data, which implicitly indicates that the spectrum requirement to be used is a combination of a first type of spectrum requirement or a plurality of second type of spectrum requirements.

In a possible implementation manner, subcarriers with the same subcarrier spacing and subcarriers with different subcarrier spacings exist in the system bandwidth of the base station.

In one possible implementation, the spectrum requirements of different terminals are different.

A second aspect of the embodiments of the present invention discloses a data transmission method, including: receiving a base station by a terminal The first indication information sent by the terminal, the terminal determines, according to the first indication information, a spectrum requirement that needs to be adopted when the terminal performs uplink data transmission; the terminal processes the uplink to-be-sent signal according to the spectrum requirement, and The processed signal is sent to the base station.

Specifically, the terminal uses the frequency domain filtering technology to filter the transmitted signal according to the spectrum requirement sent by the base station, or uses the time domain windowing technology to perform windowing processing on the sent signal, so that the requirement of the out-of-band data OOB can be satisfied, that is, The spectrum requirements effectively reduce the out-of-band energy leakage of the transmitted signal in the 5G communication system.

In a possible implementation, the processing, by the terminal, the uplink to-be-transmitted signal according to the spectrum requirement includes: determining, by the terminal, the first spectrum emission template corresponding to the spectrum requirement according to the spectrum requirement, and according to the The first spectrum transmission template processes the uplink to-be-transmitted signal; or the terminal determines, according to the spectrum requirement, a one-sided or two-side spectrum indicator of the second spectrum transmission template, and a single according to the second spectrum emission template. The side or dual-side spectrum indicators process the uplink to-be-transmitted signals.

In a possible implementation, the method further includes: the terminal receiving the second indication information sent by the base station, where the second indication information is used to indicate that the terminal is on the first subcarrier of the second location Sending a signal, where the second location is a location of a first subcarrier corresponding to a frequency domain resource for uplink data transmission by the terminal in a system bandwidth of the base station; and the terminal sends the processed signal to the base station The method includes: the terminal transmitting the processed signal to the base station on a first subcarrier of the second location.

Optionally, if the DCI is in the form of a two-level DCI, the second indication information may be sent along with the first indication information.

A third aspect of the embodiments of the present invention discloses a data transmission method, including: receiving, by a terminal, indication information sent by a base station; and determining, by the terminal, a spectrum requirement that the terminal needs to perform uplink data transmission according to the indication information; The terminal processes the uplink to-be-transmitted signal according to the spectrum requirement, and sends the processed signal to the base station.

Specifically, the terminal uses the frequency domain filtering technology to filter the transmitted signal according to the spectrum requirement sent by the base station, or uses the time domain windowing technology to perform windowing processing on the sent signal, so that Meet the requirements of out-of-band data OOB, that is, spectrum requirements, effectively reduce the out-of-band energy leakage of the transmitted signal in the 5G communication system.

In a possible implementation, the indication information is used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the indication information is used to define a spectrum of a single side or a double side of the second spectrum transmission template. index.

In a possible implementation manner, the determining, by the terminal, the spectrum requirement when the terminal performs uplink data transmission according to the indication information, includes: determining, by the terminal, the use required by the terminal to perform uplink data transmission according to the indication information. a frequency domain resource; the terminal determines, according to the frequency domain resource, a spectrum requirement that the terminal needs to adopt.

In a possible implementation manner, the determining, by the terminal, the spectrum requirement that the terminal needs to adopt according to the frequency domain resource, includes: the terminal according to a first subband in a system bandwidth of the base station, Determining the spectrum requirement by the first location where the first subcarrier corresponding to the frequency domain resource is located, the system bandwidth includes at least one subband, and the first subband includes at least one subcarrier.

In a possible implementation manner, the terminal is first according to a system bandwidth in the base station. In the subband, the first location where the first subcarrier corresponding to the frequency domain resource is located, determining the spectrum requirement includes: when the terminal is allocated to all frequency domain resources of the first subband The first location where the first subcarrier corresponding to the frequency domain resource is located occupies the entire location of the first subband, and the terminal determines that the spectrum requirement that the terminal needs to adopt is the first type of spectrum. Requiring or a plurality of the second type of spectrum requirements; or, in a case where the terminal is allocated to a frequency domain resource of an edge side of the first subband, a first subcarrier corresponding to the frequency domain resource The first location is located on the edge side of the first sub-band, and the terminal determines, according to the first location, that the spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement; or, at the terminal In a case where the frequency domain resource is allocated to the middle of the first subband, the first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband, the terminal Determining that the spectrum requirement that the terminal needs to adopt is Three types of spectrum requirements.

In a possible implementation manner, the terminal determines the spectrum according to a first location where a first subcarrier corresponding to the frequency domain resource is located in a first subband in a system bandwidth of the base station. The request includes: when the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the first sub In the middle of the band, the terminal determines that the spectrum requirement that the terminal needs to adopt is that the second spectrum emission template is not required to perform uplink data transmission on the terminal.

In a possible implementation, the determining, by the terminal, the spectrum requirement that the terminal needs to adopt according to the first location is that the second type of spectrum requirement includes: the terminal calculating the first location and the first The distance of the edge of the sub-band; the terminal determines the range to which the distance belongs; and the terminal determines the spectrum requirement corresponding to the range as the required location of the terminal according to the correspondence between the range and the spectrum requirement The second type of spectrum requirements.

In a possible implementation manner, the indication information includes a second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth, and allocation information of a subband in the system bandwidth, where the allocation information And indicating a number of subbands in the system bandwidth, and subcarriers included in each of the subbands; the method further includes:

The terminal is second in the system bandwidth according to the first subcarrier corresponding to the frequency domain resource a location, and allocation information of the subbands in the system bandwidth, determining the first location.

In a possible implementation manner, the sending, by the terminal, the processed signal to the base station includes: sending, by the terminal, the processed signal to the base station on a first subcarrier of the second location.

In a possible implementation manner, the indication information includes allocation information of the first location and subbands in the system bandwidth, where the allocation information is used to indicate a number of subbands in the system bandwidth, and each The sub-carrier includes a sub-carrier; the method further includes: determining, by the terminal, the first sub-carrier corresponding to the frequency domain resource in the system bandwidth according to the first location and the allocation information And transmitting, by the terminal, the processed signal to the base station, where the terminal sends the processed signal to the base station on a first subcarrier of the second location.

A fourth aspect of the embodiments of the present invention provides a base station, including: determining, by the base station, allocation information of subbands in a system bandwidth of the base station, where the allocation information is used to indicate a number of subbands in the system bandwidth, and a subcarrier included in each of the subbands; the base station generates indication information carrying the allocation information; and the base station sends the indication information to the terminal.

The sub-carriers of the same sub-carrier spacing and the sub-carriers with different sub-carrier spacings exist in the system bandwidth of the base station.

In a possible implementation manner, the allocation information is sent by the base station in a manner of public information or multicast; or the allocation information is specifically sent by the base station to the terminal.

In a possible implementation, the indication information is further included in a first sub-band of the system bandwidth of the base station, where the first sub-carrier corresponding to the frequency domain resource for performing uplink data transmission by the terminal is located. The first location; or the indication information further includes a second location of the first subcarrier corresponding to the frequency domain resource for the uplink data transmission by the terminal in the system bandwidth of the base station.

In the optional implementation manner, after the base station sends the indication information to the terminal, the terminal may determine, according to the allocation information in the indication information and the first location, or according to the allocation information in the indication information and the second location, determining, by the terminal, that the terminal performs uplink The spectrum requirement to be used for data transmission, and then processing the uplink to-be-transmitted signal according to the spectrum requirement, thereby reducing the out-of-band energy leakage of the transmitted signal in the 5G communication system.

A fifth aspect of the embodiments of the present invention discloses a base station, where the base station includes a functional unit for performing some or all of the steps of any of the methods of the first aspect of the embodiments of the present invention. The base station may send the first indication information carrying the spectrum requirement to the terminal when performing part or all of the steps of any of the methods.

A sixth aspect of the embodiments of the present invention discloses a terminal, where the terminal includes a functional unit for performing some or all of the steps of any of the methods of the second aspect of the embodiments of the present invention. Wherein, when the terminal performs part or all of the steps of any of the methods of the second aspect, the out-of-band energy leakage of the transmitted signal in the 5G communication system can be reduced.

A seventh aspect of the embodiments of the present invention discloses a terminal, where the terminal includes a functional unit for performing some or all of the steps of any one of the third aspects of the embodiments of the present invention. Wherein, the terminal can reduce the out-of-band energy leakage of the transmitted signal in the 5G communication system when performing some or all of the steps of any of the methods of the third aspect.

An eighth aspect of the embodiments of the present invention discloses a base station, where the base station includes a functional unit for performing some or all of the steps of any of the methods of the fourth aspect of the embodiments of the present invention. The base station may send the indication information of the configuration information of the subband in the system bandwidth of the base station to the terminal when performing part or all of the steps of any of the methods.

A ninth aspect of an embodiment of the present invention discloses a base station including a processor, a transmitter coupled to the processor, and a memory, the memory configured to store instructions, the processor being configured to be configured to The instructions are executed and the processor executes the instructions to perform some or all of the steps of any of the methods of the first aspect of the embodiments of the present invention. Wherein the base station performs part of any of the methods of the first aspect The first indication information carrying the spectrum requirement may be sent to the terminal in all steps.

A tenth aspect of an embodiment of the present invention discloses a terminal, the terminal comprising a processor, a receiver coupled to the processor, a transmitter coupled to the processor, and a memory configured to store The instructions are configured to execute the instructions, and the processor runs the instructions to perform some or all of the steps of any of the methods of the second aspect of the embodiments of the present invention. Wherein, when the terminal performs part or all of the steps of any of the methods of the second aspect, the out-of-band energy leakage of the transmitted signal in the 5G communication system can be reduced.

An eleventh embodiment of the present invention discloses a terminal, the terminal comprising a processor, a receiver coupled to the processor, a transmitter coupled to the processor, and a memory configured to be configured In the storage of instructions, the processor is configured to execute the instructions, and the processor executes the instructions to perform some or all of the steps of any of the methods of the third aspect of the embodiments of the present invention. Wherein, the terminal can reduce the out-of-band energy leakage of the transmitted signal in the 5G communication system when performing some or all of the steps of any of the methods of the third aspect.

A twelfth aspect of the embodiments of the present invention discloses a base station including a processor, a transmitter coupled to the processor, and a memory, the memory configured to store instructions, the processor being configured The instructions are executed by the processor to execute some or all of the steps of any of the methods of the fourth aspect of the embodiments of the present invention. The base station sends the indication information carrying the configuration information to the terminal when performing part or all of the steps of any of the methods.

A thirteenth aspect of the embodiment of the present invention discloses a communication system comprising the base station according to the ninth aspect and the terminal according to the tenth aspect.

A fourteenth aspect of the embodiments of the present invention discloses a communication system, including the terminal according to the eleventh aspect and the base station according to the twelfth aspect.

A fifteenth aspect of the embodiments of the present invention discloses a computer storage medium storing a program, the program specifically comprising instructions for performing some or all of the steps of any of the first aspects of the embodiments of the present invention. .

A sixteenth aspect of the embodiments of the present invention discloses a computer storage medium, where the computer storage medium stores a program, and the program specifically includes any method for performing the second aspect of the embodiment of the present invention. Instructions for some or all of the steps.

A seventeenth aspect of the embodiments of the present invention discloses a computer storage medium storing a program, the program specifically comprising instructions for performing some or all of the steps of any of the third aspects of the embodiments of the present invention. .

An eighteenth aspect of the embodiments of the present invention discloses a computer storage medium storing a program, the program specifically comprising instructions for performing some or all of the steps of any of the fourth aspects of the embodiments of the present invention. .

In a possible implementation manner, if the allocation information of the subbands in the system bandwidth does not change, and the frequency domain resources used by the terminal in the uplink data transmission are not changed when the uplink data is scheduled twice, the base station does not change. The first indication information may not be sent in the process of performing uplink data scheduling on the terminal.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying for creative labor.

1 is a schematic diagram of a network architecture of a 5G communication system according to an embodiment of the present invention;

2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

FIG. 3a is a schematic diagram of a first spectrum emission template disclosed in an embodiment of the present invention; FIG.

FIG. 3b is a schematic diagram of another first spectrum emission template disclosed in an embodiment of the present invention; FIG.

FIG. 3c is a schematic diagram of another first spectrum emission template disclosed in an embodiment of the present invention; FIG.

FIG. 3 is a schematic diagram of a position of a subcarrier corresponding to a frequency domain resource allocated by a terminal in a subband according to an embodiment of the present disclosure;

FIG. 3 e is a schematic diagram of a position of a subcarrier corresponding to a frequency domain resource allocated by a terminal in a subband according to another embodiment of the present disclosure;

FIG. 3f is a subcarrier corresponding to a frequency domain resource allocated by another terminal according to an embodiment of the present invention; a schematic representation of the location in the subband;

FIG. 3g is a schematic diagram showing the position of a subcarrier corresponding to a frequency domain resource allocated by a terminal in a subband according to another embodiment of the present disclosure;

4 is a schematic flowchart diagram of another data transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

9 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another communication system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "comprising" and "comprising" and variations of the invention are intended to be in the meaning For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment.

The embodiment of the invention discloses a data transmission method, device and system, which can reduce the out-of-band energy leakage of the transmitted signal in the 5G communication system. The details are described below separately.

In order to better understand a data transmission method, device, and system disclosed in the embodiments of the present invention, a network architecture to which the embodiments of the present invention are applied is described below. Referring to FIG. 1, FIG. 1 is a schematic diagram of a network architecture of a 5G communication system according to an embodiment of the present invention. As shown in FIG. 1 , the 5G communication system includes a base station and a terminal, where the base station can communicate with the terminal to implement uplink data adjustment by the base station to the terminal. degree.

A base station, that is, a public mobile communication base station, is a form of a radio station, and refers to a radio transceiver station that transmits information to and from a terminal through a mobile communication switching center in a certain radio coverage area.

The terminal may also be referred to as a user equipment (User Equipment, referred to as "UE"), a mobile station (Mobile Station, referred to as "MS"), a mobile terminal (Mobile Terminal), etc., optionally, the terminal may The ability to communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal can be a smartphone, a laptop, a personal computer (PC), a personal digital assistant (Personal) Mobile devices such as Digital Assistant (PDA), Mobile Internet Device (MID), and smart wearable devices (such as smart watches and smart bracelets).

According to the 3rd Generation Partnership Project (3GPP) discussion on the fifth generation of mobile communication technology (5G), 5G technology will still adopt Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, For the waveform of OFDM, the selection of parameters such as subcarrier spacing, OFDM symbol length, and Cyclic Prefix (CP) length is involved in the frame structure design. On the other hand, 5G technology needs to support at least three services, such as enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and high-reliability low-latency communication (Ultra- Reliable and Low-Latency Communications, URLLC). Among them, the selection of subcarrier spacing is different for different services. For example, the user power of mMTC is lower, and it is desirable to use a smaller subcarrier spacing (corresponding to a longer OFDM symbol length) to ensure sufficient signal energy; and URLLC The service is more inclined to use a larger subcarrier spacing (corresponding to a shorter OFDM symbol length) to achieve short-term transmission of emergency services. It can be seen that in a 5G communication system, subcarriers with different subcarrier spacings exist on the same carrier. OFDM waveforms have good orthogonality in the frequency domain, but this is based on the same subcarrier spacing. If OFDM waveforms with different subcarrier spacings are placed adjacent to each other on the same carrier, the waveforms for different subcarrier spacings may interfere with each other due to the out-of-band leakage inherent in the OFDM signal. In addition, 5G communication systems need to be more than long-term performance The higher spectral efficiency of the Long Term Evolution (LTE) system places higher demands on the out-of-band energy leakage of the 5G communication system.

Based on the above problem, the embodiment of the present invention proposes a scheme for processing an uplink transmission signal according to a spectrum requirement to reduce an out-of-band energy leakage of a transmission signal in a 5G communication system. There are two specific implementation methods.

The first implementation manner may include: after the base station generates the first indication information used to indicate the spectrum requirement used by the terminal to perform uplink data transmission, the base station may send the first indication information to the terminal, so that the terminal receives the first indication. After the indication information, the spectrum requirement used by the terminal to perform uplink data transmission may be determined according to the first indication information. Further, the terminal may process the uplink to-be-sent information according to the spectrum requirement, and send the processed signal to the base station. It should be noted that the spectrum requirement herein refers to the requirement of the spectrum indicator of the frequency domain resource used when the terminal performs uplink data transmission. For example, the base station may indicate, by using the first indication information, that the terminal uses the spectrum requirement. The matched first spectrum transmission template is used for uplink data transmission; or the base station may indicate, by using the first indication information, that the terminal limits the one-sided or two-side spectrum indicators of the preset second spectrum transmission template to obtain the spectrum Require matching frequency domain resources.

The second implementation manner may include: the base station may send the indication information to the terminal, where the indication information includes the allocation information of the subband in the system bandwidth of the base station, and the uplink data transmission with the terminal in the first subband in the system bandwidth of the base station. The first location where the first subcarrier corresponding to the frequency domain resource is located, or the indication information includes the allocation information of the subband in the system bandwidth of the base station and the first subcarrier corresponding to the frequency domain resource that the terminal performs uplink data transmission. The second location in the system bandwidth of the base station, after receiving the indication information, the terminal may determine, according to the indication information, a spectrum requirement when the terminal performs uplink data transmission, and further, the terminal may process the uplink to-be-transmitted signal according to the spectrum requirement. And transmitting the processed signal to the base station.

In the above two implementation manners, the terminal may use the frequency domain filtering technology to filter the transmitted signal according to the spectrum requirement, or use the time domain windowing technology to perform windowing processing on the sent signal, which can satisfy out-of-band data (Out Of Band). , OOB) requirements, ie spectrum requirements, effectively reduce the out-of-band energy leakage of transmitted signals in 5G communication systems.

In addition, the frequency domain filtering and the time domain windowing will cause the transmitted signal to be distorted, affecting the Error Vector Magnitude (EVM) index and affecting the receiving performance of the receiving end. In order to solve this problem, in the embodiment of the present invention, specifically, different filter coefficients may be designed according to specific locations of frequency domain resources used for uplink transmission of data by the terminal, respectively, and frequency domain filters of different shapes are formed, and filtering is used. The device filters the uplink to-be-transmitted signal, or may design different time-domain window functions according to the specific location of the frequency domain resource used by the terminal to transmit data, and perform windowing processing on the uplink to-be-transmitted signal. It can be seen that the above technical solution can ensure the EVM index and improve the performance of the receiving end under the premise of satisfying the spectrum requirement and reducing the out-of-band energy leakage of the transmitted signal in the 5G communication system.

Please refer to FIG. 2. FIG. 2 is a schematic flowchart diagram of a data transmission method according to an embodiment of the present invention. The data transmission method is described from both sides of the base station and the terminal, and the data transmission method is applied to a process in which the base station performs uplink data scheduling on the terminal. As shown in FIG. 2, the data transmission method may include the following steps:

201. The base station determines a frequency domain resource that is used by the terminal to perform uplink data transmission.

In the embodiment of the present invention, in a process in which the base station performs uplink data scheduling on the terminal, the base station may determine a frequency domain resource that is used when the terminal performs uplink data transmission, where the frequency domain resource is required for the terminal to perform uplink data transmission. Subcarriers, in other words, on which subcarriers the terminal transmits uplink signals.

202. The base station determines the first location according to the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth of the base station, and the allocation information of the subband in the system bandwidth.

The system bandwidth includes at least one subband, each subband includes at least one subcarrier, and the location of each subcarrier may include an absolute location and a relative location, where the absolute location may be a subcarrier in a system bandwidth of the base station. Location, which may be the location of a subcarrier in a certain subband of the base station's system bandwidth.

The 5G communication system may set allocation information of subbands in the system bandwidth, where the allocation information is used to indicate the number of subbands in the system bandwidth, and the subcarriers included in each subband.

In the embodiment of the present invention, after determining, by the base station, the frequency domain resource that is used by the terminal to perform uplink data transmission, the base station may determine the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth of the base station, and further In combination with the allocation information of the subbands in the system bandwidth, the base station may determine the first location of the first subcarrier corresponding to the frequency domain resource in the first subband of the system bandwidth of the base station.

The subcarriers of the same subcarrier spacing and the subcarriers of different subcarrier spacings may exist in the system bandwidth of the base station. If the subcarriers of the same subcarrier spacing exist in the system bandwidth of the base station, that is, the subcarrier spacings between adjacent subcarriers in the system bandwidth are equal, the first subband may be the system bandwidth, if the system of the base station The first sub-band may be part of the system bandwidth, and the first sub-band may include multiple consecutive sub-carriers, and the multiple consecutive sub-carriers The subcarrier spacing between adjacent subcarriers is equal. Correspondingly, the two sides of the first subband may be subcarriers of other subcarrier spacing, for example, the system bandwidth is: subcarrier 1/subcarrier 2/subcarrier 3/ Subcarrier 4/subcarrier 5/subcarrier 6, wherein the subcarrier spacing of adjacent subcarrier 1 and subcarrier 2 is t1, and the subcarrier spacing of adjacent subcarrier 2 and subcarrier 3 is t2, adjacent The subcarrier spacing of the subcarrier 3 and the subcarrier 4 is t2, the subcarrier spacing of the adjacent subcarrier 4 and the subcarrier 5 is t2, and the subcarrier spacing of the adjacent subcarrier 5 and the subcarrier 6 is t1, and T1≠t2, the first subband can be divided by 4 subcarriers of t2 Continued subcarriers, i.e., a first sub-band: subcarrier 2 / subcarrier 3/4 sub-carriers / sub-carriers 5. Alternatively, one side of the first subband may be adjacent to the subcarriers separated by other subcarriers and the other side is located at the edge of the system bandwidth, for example, the system bandwidth is: subcarrier1/subcarrier 2/subcarrier 3/subcarrier 4/subcarrier 5, wherein the subcarrier spacing of adjacent subcarrier 1 and subcarrier 2 is t1, the subcarrier spacing of adjacent subcarrier 2 and subcarrier 3 is t2, and adjacent subcarriers 3 and subcarriers The subcarrier spacing of carrier 4 is t2, the subcarrier spacing of adjacent subcarrier 4 and subcarrier 5 is t2, and t1≠t2, the first subband may be composed of 4 consecutive subcarriers with subcarrier spacing t2. That is, the first subband is: subcarrier 2/subcarrier 3/subcarrier 4/subcarrier 5, and it can be seen that the left side of the first subband is adjacent to the subcarrier 1, and the right side of the first subband is located in the system bandwidth. the edge of.

Further, if the base station operates in a time division duplex mode, that is, the system bandwidth of the base station includes: an uplink frequency band and a downlink frequency band at any time, the first sub-band is at least a part of the uplink frequency band. Specifically, if all subcarriers in the uplink frequency band are consecutive and the subcarrier spacing between adjacent subcarriers is equal, then The first subband is an uplink frequency band. If there are subcarriers with different subcarrier spacings in the uplink frequency band, the first subband is a plurality of consecutive subcarriers in the uplink frequency band, and subcarriers between adjacent ones of the plurality of consecutive subcarriers The intervals are equal.

203. The base station determines a spectrum requirement according to a first location where the first subcarrier corresponding to the frequency domain resource is located in the first subband in the system bandwidth of the base station.

Optionally, the first indication information is specifically used to indicate a first spectrum transmission template corresponding to a spectrum requirement.

In this case, each spectrum requirement corresponds to one spectrum emission template, and the first spectrum transmission template is preset in advance, and the first spectrum emission template mainly includes three types. 3a, 3b, and 3c, wherein FIG. 3a is a schematic diagram of a first spectrum emission template disclosed in an embodiment of the present invention, and FIG. 3b is another first spectrum emission template disclosed in an embodiment of the present invention. FIG. 3c is a schematic diagram of another first spectrum emission template disclosed in an embodiment of the present invention. As shown in the dashed line in FIG. 3a, the first spectrum emission template in FIG. 3a presents a trapezoidal shape. For the first spectrum emission template shown in FIG. 3a, both sides of the first spectrum emission template need to be left (left Side and right sides are defined by spectral indicators, that is, the out-of-band energy leakage on both sides of the first spectrum emission template needs to be suppressed. As shown by the dashed line in FIG. 3b, the first spectrum emission template in FIG. 3b presents a shape of a semi-trapezoid processed on the left side of the trapezoid, and for the first spectrum emission template shown in FIG. 3b, The one-side (ie, the left side) of the first spectrum transmission template defines the spectrum indicator, that is, the out-of-band energy leakage on the left side of the first sub-band in the system bandwidth of the base station needs to be suppressed, and the first sub-band is performed by the terminal. The sub-band of the first sub-carrier corresponding to the frequency domain resource used for uplink data transmission. As shown in the dashed line in FIG. 3c, the first spectrum emission template in FIG. 3c presents a shape of a semi-trapezoid processed on the right side of the trapezoid, and for the first spectrum emission template shown in FIG. 3c, The one-side (ie, the right side) of the first spectrum transmission template defines the spectrum index, that is, the out-of-band energy leakage on the right side of the first sub-band in the system bandwidth of the base station needs to be suppressed, and the first sub-band is performed by the terminal. The sub-band of the first sub-carrier corresponding to the frequency domain resource used for uplink data transmission. To obtain the first spectrum transmission template shown in FIG. 3a, FIG. 3b, and FIG. 3c, the corresponding spectrum indicator is used to define one side or both sides of the spectrum emission template. The spectrum indicator corresponding to the first spectrum emission template may be obtained by looking up a table.

Referring to Table 1, Table 1 is a spectrum index of a spectrum emission template disclosed in an embodiment of the present invention. As shown in Table 1 below;

Table 1

In the table 1, there are multiple system bandwidths in the 5G communication system, such as system bandwidth 1, system bandwidth 2.... In addition, the OOB corresponding to each system bandwidth has different value ranges, and the positive value of Δf _OOB represents The definition of the spectrum index is performed on the right side of the spectrum emission template, and the negative value of Δf _OOB represents the limitation of the spectrum index on the left side of the spectrum emission template. For example, for the system bandwidth 1, if the value range of Δf _OOB is between (A, B), the spectrum index on the right side of the spectrum emission template is -k1, and if the value of △f _OOB is (-A, - Between B), the spectrum indicator on the left side of the spectrum emission template is -k1. If the value range of Δf _OOB is between (B, C), the spectrum indicator on the right side of the spectrum emission template is -k3. If the value range of Δf _OOB is between (-B, -C), the spectrum indicator on the left side of the spectrum emission template is -k3.

Optionally, the first indication information is specifically used to define a single-sided or dual-side spectrum indicator of the second spectrum emission template. In this case, the second spectrum transmission template is a total spectrum transmission template, and the second spectrum emission template can be performed according to the one-sided or two-side spectrum indicators of the second spectrum transmission template defined by different spectrum requirements. Processing, obtaining the spectrum emission template required by the current terminal. The second spectrum emission template may be a trapezoidal shape as shown in FIG. 3a above.

In the embodiment of the present invention, the first location of the first subcarrier corresponding to the frequency domain resource used by the terminal for uplink data transmission is indefinite, and the requirements of the spectrum emission template are different for different locations. For example, if the first location is located at the edge of the subband (ie, the left or the right side) in the system bandwidth, the 5G communication system has higher requirements for the spectrum emission template, and cannot correspond to adjacent subbands or adjacent system bands. The frequency domain resources used by the terminal are to be interfered; and when the first location is in the middle of the subband in the system bandwidth, the 5G communication system has a relatively low requirement for the spectrum emission template. Since the OFDM waveform itself is orthogonal in the frequency domain, it does not affect the frequency domain resources required for the terminal corresponding to the subcarriers of the same subcarrier spacing.

Referring to FIG. 3d and FIG. 3e, FIG. 3d is a schematic diagram of a position of a subcarrier corresponding to a frequency domain resource allocated by a terminal in a subband according to an embodiment of the present invention; FIG. 3e is a disclosure of an embodiment of the present invention; Another schematic diagram of the location of subcarriers corresponding to frequency domain resources allocated by the terminal in the subband. There are subcarriers with different subcarrier spacings in the system bandwidths shown in FIG. 3d and FIG. 3e. As shown in FIG. 3d, there are subbands of subcarrier spacing 1 and subbands of subcarrier spacing 2 in the system bandwidth. The 5G communication system allocates frequency domain resources to the UE1, the UE2, the UE3, the UE4, and the UE5. The subcarriers corresponding to the allocated frequency domain resources of the UE1 are located on the left side of the subband of the subcarrier interval 1, and the frequency domain resources allocated by the UE2 are allocated. The corresponding subcarrier is located on the right side of the subband of the subcarrier interval 1, the subcarrier corresponding to the allocated frequency domain resource of the UE3 is located on the left side of the subband of the subcarrier interval 2, and the subcarrier corresponding to the allocated frequency domain resource of the UE4 Located in the middle of the subband of the subcarrier interval 2, the subcarrier corresponding to the allocated frequency domain resource of the UE5 is located to the right of the subband of the subcarrier interval 2. As shown in FIG. 3e, there are subbands of subcarrier spacing 3 and subbands of subcarrier spacing 4 in the system bandwidth. The 5G communication system allocates frequency domain resources to the UE6, the UE7, and the UE8, where the subcarriers corresponding to the allocated frequency domain resources of the UE6 are located on the left side of the subband of the subcarrier spacing 3, and the subcarriers corresponding to the allocated frequency domain resources of the UE7 Located on the right side of the sub-band of the sub-carrier interval 3, the sub-carriers corresponding to the allocated frequency domain resources of the UE 8 are located in all of the sub-bands of the sub-carrier spacing 4.

It should be noted that FIG. 3d and FIG. 3e are only distributions of subbands in the system bandwidth provided by the embodiment of the present invention. The system bandwidth is not limited to the two subbands shown in FIG. 3d and FIG. 3e, and may also include More sub-bands than those shown in Figure 3d and Figure 3e, such as: 3 sub-bands, 4 sub-bands, etc., the sub-carrier spacing of different sub-bands are different.

Referring to FIG. 3f and FIG. 3g together, FIG. 3f is a schematic diagram of another sub-carrier corresponding to a frequency domain resource allocated by a terminal in a sub-band according to an embodiment of the present invention; FIG. 3g is a disclosure of an embodiment of the present invention. Another schematic diagram of the location of subcarriers in the subband corresponding to the allocated frequency domain resources of the terminal. The sub-carriers with the same sub-carrier spacing exist in the system bandwidths shown in FIG. 3f and FIG. 3g, that is, only one sub-band exists in the system bandwidth. As shown in FIG. 3f, the 5G communication system allocates frequency domain resources to the UE9, the UE10, and the UE11, where the subcarriers corresponding to the allocated frequency domain resources of the UE9 are located on the left side of the subband. The subcarriers corresponding to the allocated frequency domain resources of the UE 10 are located in the middle of the subband, and the subcarriers corresponding to the allocated frequency domain resources of the UE11 are located on the right side of the subband. As shown in FIG. 3g, the 5G communication system allocates frequency domain resources to the UE12. The subcarriers corresponding to the allocated frequency domain resources of the UE 12 are located in all of the subbands.

As an optional implementation manner, the base station determines, according to a first location where the first subcarrier corresponding to the frequency domain resource is located in a first subband in a system bandwidth of the base station, The specific requirements of the spectrum requirements can be:

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband And determining, by the base station, that the spectrum requirement that the terminal needs to adopt is that the second spectrum emission template is not required to perform uplink data transmission on the terminal.

In this optional implementation, when the terminal is allocated to the intermediate frequency domain resource of the first subband, the first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband. For example, U4 in FIG. 3d and U10 in FIG. 3f. In this case, since the OFDM waveform itself is orthogonal in the frequency domain, it does not affect the frequency domain resources of the terminal corresponding to the subcarriers of the same subcarrier spacing. The 5G communication system has a relatively low requirement for the spectrum transmission template. The base station can determine that the spectrum requirement to be used by the terminal is to limit the second spectrum transmission template when the terminal does not need to send uplink data.

As another optional implementation manner, the spectrum requirements are classified into at least three types according to the degree of limitation of the single-sided or double-side spectrum indicators of the second spectrum transmission template, including: the first type of spectrum requirement, and the second Class spectrum requirements and third class spectrum requirements.

The first type of spectrum requirement and the third type of spectrum requirement are used to limit the spectrum indicators of the two sides of the second spectrum transmission template when the terminal performs uplink data transmission, and the third type of spectrum requirements are The degree of limitation of the spectrum indicators on both sides of the second spectrum transmission template is lower than the degree of limitation of the spectrum indicators of the two sides of the second spectrum transmission template required by the first type of spectrum requirement; the second type of spectrum requirement is used for the terminal The spectrum indicator of the single side of the second spectrum transmission template when the uplink data is sent is defined, wherein the one side may be the left side or the right side.

Wherein, the first type of spectrum requirement and the third type of spectrum requirement define the spectral indicators of the two sides of the second spectrum emission template, and the presented spectrum emission template may be similar to the trapezoidal shape in FIG. 3a above. The difference between the two is that the slopes of the two oblique sides of the trapezoid are different depending on the degree of definition of the spectral index. The third type of spectrum requirement may allow the out-of-band energy leakage existing on both sides of the second spectrum transmission template to be greater than the out-of-band energy leakage existing on the two sides of the second spectrum emission template.

The second type of spectrum requires that the spectrum indicator of one side of the second spectrum emission template be defined, and the presented spectrum emission template may be similar to the shape of the semi-trapezoid processed on the left side of the trapezoid presented in FIG. 3b above, or It can be similar to the shape of the semi-trapezoid processed on the right side of the trapezoid in Fig. 3c above.

In the optional implementation manner, the base station determines, according to a first location where the first subcarrier corresponding to the frequency domain resource is located in a first subband in a system bandwidth of the base station, The specific requirements of the spectrum requirements can be:

In a case that the terminal is allocated to all the frequency domain resources of the first subband, the first location where the first subcarrier corresponding to the frequency domain resource is located occupies all the locations of the first subband, and the base station determines The spectrum requirement that the terminal needs to adopt is the first type of spectrum requirement or a plurality of the second type of spectrum requirements; or

In a case where the terminal is allocated to the frequency domain resource on the edge side of the first subband, the first location where the first subcarrier corresponding to the frequency domain resource is located is located on the edge side of the first subband, Determining, by the base station, the spectrum requirement that the terminal needs to adopt according to the first location is the second type of spectrum requirement; or

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband, and the base station determines The spectrum requirements that the terminal needs to adopt are the third type of spectrum requirements.

In this optional implementation manner, in a case where the terminal is allocated to all frequency domain resources of the first subband, the first location where the first subcarrier corresponding to the frequency domain resource is located occupies all of the first subband The location, for example, the UE8 in FIG. 3e and the UE12 in FIG. 3g. In this case, both sides of the second spectrum transmission template need to be defined, and the base station can determine that the spectrum requirement that the terminal needs to adopt is the first type of spectrum requirement. Or a plurality of second type spectrum requirements, the plurality of second type spectrum requirements may define two sides of the second spectrum emission template.

In the case that the terminal is allocated to the frequency domain resource on the edge side of the first subband, the first location where the first subcarrier corresponding to the frequency domain resource is located is located on the edge side of the first subband, for example : Figure 3d UE1, UE2, UE3, and UE5 in Figure 3e, UE6, UE7 in Figure 3e, UE9 and UE11 in Figure 3f. In this case, the spectrum of one side (left or right) of the second spectrum transmission template is required. The indicator is defined, and the base station can determine, in the first location, that the spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement.

The second type of spectrum requirements adopted by different UEs may be different according to the relationship between the distance between the first location and the edge side.

Optionally, determining, by the base station, that the spectrum requirement that the terminal needs to adopt according to the first location is that the second type of spectrum requirement may specifically include the following steps:

11) the base station calculates a distance between the first position and an edge side of the first sub-band;

12) the base station determines the range to which the distance belongs;

13) The base station determines, according to the correspondence between the range and the spectrum requirement, the spectrum requirement corresponding to the range as the second type spectrum requirement that the terminal needs to adopt.

The corresponding relationship between the range and the spectrum requirement may be established in advance, where the range is the range of the distance between the first location and the edge side of the first sub-band, and the distance between the first location and the edge side of the first sub-band is different, and correspondingly The second type of spectrum requirements that need to be used are also different. The smaller the range (ie, the distance between the first location and the edge side of the first subband), the higher the degree of limitation of the corresponding spectrum requirement (ie, the second type of spectrum requirement) on the spectrum indicator of the second spectrum emission template. The stronger the inhibition of out-of-band energy leakage on one side. For example, the range 1 is greater than the range 2, and the spectrum requirement corresponding to the range 1 requires less suppression of the out-of-band energy leakage on one side than the spectrum requirement corresponding to the range 2 to suppress the out-of-band energy leakage on one side. In addition, the different degrees of inhibition of single-side out-of-band energy leakage can be achieved by different values for Table 1.

As another optional implementation manner, the method further includes:

The base station determines the first location according to the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth and the allocation information of the subband in the system bandwidth.

The allocation information is used to indicate the number of subbands in the system bandwidth, and the subcarriers included in each subband. In this optional implementation manner, the base station may determine, according to the second position of the first subcarrier corresponding to the frequency domain resource in the system bandwidth when the terminal performs uplink data transmission, and the allocation information of the subband in the system bandwidth. The first subcarrier corresponding to the frequency domain resource is in the first subband of the system bandwidth. The first position.

204. The base station generates first indication information to indicate a spectrum requirement.

205. The base station sends the first indication information to the terminal.

The first indication information may be sent in Downlink Control Information (DCI).

As an optional implementation manner, the base station may send the first indication information to the terminal by using preset bits, for example, the indication of the first indication information is performed by using 2 bits, and 00 represents the first type of spectrum requirement or multiple second type of spectrum requirements. The combination of 10 represents the second type of spectrum requirement for the left side of the spectrum emission template, 01 represents the second type of spectrum requirement for the right side of the spectrum emission template, 11 represents the third type of spectrum requirement or does not require the use of spectrum requirements.

As another optional implementation manner, the first indication information is used to indicate that the first number of subcarriers do not bear data on a specified location of the first subcarrier corresponding to the frequency domain resource allocated by the base station to the terminal. For example, assume that the first number of subcarriers are reserved on one side (left or right side) of the first subcarrier without carrying data, which implies that the spectrum requirement to be used is the second type of spectrum requirement (for The left or right side of the spectrum emission template); it is also assumed that the subcarrier is not reserved on the first subcarrier, which implies that the required spectrum requirement is the third type of spectrum requirement or does not require the spectrum requirement; Retaining the first number of subcarriers on both sides of the first subcarrier does not carry data, which implicitly indicates that the spectrum requirement to be used is a combination of a first type of spectrum requirement or a plurality of second type of spectrum requirements.

Furthermore, for the case where it is indicated that the first number of subcarriers are not carried on one side of the first subcarrier, the first number is different, and accordingly, the second type of spectrum requirements are also different. The greater the first quantity, the higher the degree of limitation of the corresponding spectrum requirement (ie, the second type of spectrum requirement) on the spectrum indicator of the second spectrum transmission template, and the out-of-band energy leakage on the one side of the second spectrum emission template. The stronger the suppression is, for example, the first quantity is A or B, and A is greater than B. The spectrum corresponding to A requires the suppression of out-of-band energy leakage on one side of the second spectrum emission template to be lower than the spectrum requirement of B. The degree of suppression of out-of-band energy leakage on one side of the emission template is strong. In addition, the different degrees of inhibition of single-side out-of-band energy leakage can be achieved by different values for Table 1.

206. The terminal determines, according to the first indication information, a spectrum requirement when the terminal performs uplink data transmission.

207. The terminal processes the uplink to-be-sent signal according to the spectrum requirement.

In the embodiment of the present invention, the terminal may use a frequency domain filter to filter the transmitted signal according to the spectrum requirement, or use a time domain windowing to process the sent signal to perform windowing processing, which can satisfy out-of-band data (OOB). The requirement, ie the spectrum requirement, effectively reduces the out-of-band energy leakage of the transmitted signal in the 5G communication system. Among them, different spectrum requirements correspond to different time domain filters or frequency domain window functions.

In addition, different filter coefficients may be designed according to the specific location of the frequency domain resource used by the terminal to transmit data, respectively, and frequency domain filters of different shapes are respectively formed, and the uplink to be transmitted signal is filtered by using a filter, or A different time domain window function is designed according to the specific location of the frequency domain resource used by the terminal to transmit data, and the uplink to-be-transmitted signal is windowed. It can be seen that the above technical solution can also ensure the error vector Magnitude (EVM) index and improve the performance of the receiving end under the premise of satisfying the spectrum requirement and reducing the out-of-band energy leakage of the transmitted signal in the 5G communication system.

208. The base station sends, to the terminal, second indication information that carries the second location.

The second location is a location of the first subcarrier corresponding to the frequency domain resource when the terminal performs uplink data transmission in the system bandwidth of the base station. Optionally, if the DCI is in the form of a two-level DCI, the second indication information may be sent along with the first indication information.

As another optional implementation manner, if the allocation information of the subbands in the system bandwidth does not change, and the frequency domain resources used by the terminal in the uplink data transmission are not changed when the uplink data is scheduled twice, The base station may not send the first indication information in the process of performing uplink data scheduling on the terminal.

209. The terminal sends the processed signal to the base station on the first subcarrier of the second location.

In the method flow described in FIG. 2, after determining the spectrum requirement of the terminal for transmitting data in the uplink, the base station sends the first indication information that carries the spectrum request to the terminal, and the terminal can process the uplink to-be-transmitted signal according to the spectrum requirement. In this way, the processed signal can ensure the EVM index and improve the performance of the receiving end under the premise of satisfying the spectrum requirement and reducing the out-of-band energy leakage of the signal transmitted in the 5G communication system.

Please refer to FIG. 4. FIG. 4 is a schematic flowchart diagram of another data transmission method according to an embodiment of the present invention. The data transmission method is described from both sides of the base station and the terminal, and the data transmission method is applied to a process in which the base station performs uplink data scheduling on the terminal. As shown in FIG. 4, the data transmission method may include the following steps:

401. The base station sends the indication information to the terminal.

Optionally, the indication information includes: allocation information of subbands in a system bandwidth of the base station, and a first subcarrier corresponding to the frequency domain resource that the terminal performs uplink data transmission in the first subband of the system bandwidth of the base station. First position

Optionally, the indication information includes the allocation information of the subband in the system bandwidth of the base station and the second location of the first subcarrier corresponding to the frequency domain resource of the uplink data transmission by the terminal in the system bandwidth of the base station.

The allocation information is used to indicate the number of subbands in the system bandwidth and the subcarriers included in each subband. There are subcarriers of the same subcarrier spacing and subcarriers of different subcarrier spacings in the system bandwidth of the base station. The system bandwidth includes at least one subband, and the first subband includes at least one subcarrier.

The subcarriers of the same subcarrier spacing and the subcarriers of different subcarrier spacings may exist in the system bandwidth of the base station. If the subcarriers of the same subcarrier spacing exist in the system bandwidth of the base station, that is, the subcarrier spacings between adjacent subcarriers in the system bandwidth are equal, the first subband may be the system bandwidth, if the system of the base station The first sub-band may be part of the system bandwidth, and the first sub-band may include multiple consecutive sub-carriers, and the multiple consecutive sub-carriers The subcarrier spacing between adjacent subcarriers is equal. Correspondingly, the two sides of the first subband may be subcarriers of other subcarrier spacing, or the subcarriers of one side of the first subband may be spaced apart from other subcarriers. Adjacent, while the other side is at the edge of the system bandwidth. Further, if the base station operates in a time division duplex mode, that is, the system bandwidth of the base station includes: an uplink frequency band and a downlink frequency band at any time, the first sub-band is at least a part of the uplink frequency band. Specifically, if all the subcarriers in the uplink frequency band are consecutive and the subcarrier spacings between adjacent subcarriers are equal, the first subband is an uplink frequency band. If there are subcarriers with different subcarrier spacings in the uplink frequency band, the first subband is a plurality of consecutive subcarriers in the uplink frequency band, and subcarriers between adjacent ones of the plurality of consecutive subcarriers Interval phase Wait.

The allocation information may be sent by the base station in a manner of public information or multicast; or the allocation information may be specifically sent by the base station to the terminal.

402. The terminal determines, according to the indication information, a spectrum requirement when the terminal performs uplink data transmission.

The indication information is used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the indication information is used to define a one-sided or two-side spectrum indicator of the second spectrum transmission template.

Optionally, the manner in which the terminal determines, according to the indication information, the spectrum requirement when the terminal performs uplink data transmission may include the following steps:

11) The terminal determines, according to the indication information, a frequency domain resource that is used by the terminal to perform uplink data transmission;

12) The terminal determines the spectrum requirements that the terminal needs to adopt according to the frequency domain resources.

Specifically, in step 12), the terminal may determine a spectrum requirement according to a first location where the first subcarrier corresponding to the frequency domain resource is located in the first subband in the system bandwidth of the base station. According to the degree of limitation of the single-sided or double-sided spectral indicators of the second spectrum transmission template, the spectrum requirements are classified into at least three categories, including: the first type of spectrum requirements, the second type of spectrum requirements, and the third type of spectrum requirements. The first type of spectrum requirements and the third type of spectrum requirements are used to limit the spectrum indicators of the two sides of the second spectrum transmission template when the terminal performs uplink data transmission, and the third type of spectrum requires the pair of second spectrum emission templates. The degree of limitation of the spectrum indicator on the side is lower than the degree of limitation of the spectrum indicator on the two sides of the second spectrum transmission template of the first type of spectrum requirement; the second type of spectrum requires the second spectrum emission template when the uplink data is transmitted to the terminal. The unilateral spectral indicators are limited.

If the indication information in the step 401 includes the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth and the allocation information of the subband in the system bandwidth, the terminal may be based on the first subcarrier corresponding to the frequency domain resource. The second location in the system bandwidth, and the allocation information of the subbands in the system bandwidth, determines the first location.

Optionally, the manner that the terminal determines the spectrum requirement according to the first location where the first subcarrier corresponding to the frequency domain resource is located in the first subband of the system bandwidth of the base station may be:

In the case where the terminal is allocated to the intermediate frequency domain resource of the first sub-band, corresponding to the frequency domain resource The first location where the first subcarrier is located is located in the middle of the first subband, and the terminal determines that the spectrum requirement to be used by the terminal is that the second spectrum transmission template is not required to perform uplink data transmission on the terminal.

In a case where the terminal is allocated to all the frequency domain resources of the first sub-band, the first location where the first sub-carrier corresponding to the frequency domain resource is located occupies all the positions of the first sub-band, and the terminal determines the spectrum to be used by the terminal. Requirements for the first type of spectrum requirements or multiple second type of spectrum requirements; or,

In a case where the terminal is allocated to the frequency domain resource on the edge side of the first subband, the first location where the first subcarrier corresponding to the frequency domain resource is located is located on the edge side of the first subband, and the terminal is according to the first location. Determining the spectrum requirements that the terminal needs to adopt is the second type of spectrum requirement; or,

In a case where the terminal is allocated to the intermediate frequency domain resource of the first sub-band, the first location where the first sub-carrier corresponding to the frequency domain resource is located is located in the middle of the first sub-band, and the terminal determines the spectrum to be used by the terminal. The requirements are for the third type of spectrum.

The manner in which the terminal determines, according to the first location, that the spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement may specifically include the following steps:

21) the terminal calculates a distance between the first position and the edge side of the first sub-band;

22) the terminal determines the range to which the distance belongs;

23) The terminal determines the spectrum requirement corresponding to the range according to the correspondence between the range and the spectrum requirement as the second type of spectrum requirement that the terminal needs to adopt.

It should be noted that the description of step 402 may be specifically referred to the related description in FIG. 2 above, and details are not described herein again.

403. The terminal processes the uplink to-be-transmitted signal according to the spectrum requirement.

404. The terminal sends the processed signal to the base station.

In the embodiment of the present invention, if the indication information in the step 401 includes the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth and the allocation information of the subband in the system bandwidth, in step 304, specifically, the terminal may The processed signal is transmitted to the base station on the first subcarrier of the second location.

If the indication information in step 401 includes the first location and the allocation information of the subbands in the system bandwidth And the terminal further determines, according to the first location and the allocation information, a second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth, and further, in step 304, specific The terminal may send the processed signal to the base station on the first subcarrier of the second location.

In the method flow described in FIG. 4, after the base station sends the indication information to the terminal, the terminal may determine the spectrum requirement that the terminal needs to adopt according to the indication information, and further process the uplink to-be-transmitted signal according to the spectrum requirement, so that after the processing The signal satisfies the requirements of OOB, reduces the out-of-band energy leakage of the transmitted signal in the 5G communication system, and at the same time optimizes the EVM characteristic of the uplink transmission signal of the terminal.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station may be used to perform some or all of the steps in FIG. 2, and details are not described herein. As shown in FIG. 5, the base station 500 includes a processor 501, a memory 502, a transmitter 503, and an antenna 504. The transmitter 503 is used to transmit a signal. The memory 502 is for storing instructions, the processor 501 is for executing instructions stored by the memory 502, and controls the transmitter 503 to transmit signals. The processor 501, the memory 502, and the transmitter 503 can be implemented by one or more chips. For example, the processor 501, the memory 502, and the transmitter 503 may be fully integrated in one or more chips, or the processor 501 and the transmitter 503 may be integrated in one chip and the memory 502 integrated in another chip, in this form. No restrictions are imposed. It can be understood by those skilled in the art that the structure of the base station 500 shown in FIG. 5 does not constitute a limitation on the embodiment of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may also include more than the illustration. Or fewer parts, or combine some parts, or different parts. among them:

The processor 501 can be a communications processor, a baseband processor, a modem, a system on chip (SOC), a microprocessor, an application-specific integrated circuit (ASIC), or one or more An integrated circuit that controls the execution of the program of the present invention.

The memory 502 can include read only memory and random access memory and provides instructions and data to the processor 501. A portion of the memory 502 can also include a non-volatile random access memory. For example, the memory 502 can also store information of the device type. The processor 501 can be used to execute the memory 502. The instructions stored therein, and when the processor 501 executes the instructions stored in the memory 502, the processor 501 can be used to perform the various steps and/or processes of the method embodiments described above. among them,

The processor 501 is configured to generate first indication information, where the first indication information is used to indicate a spectrum requirement that is required when the terminal performs uplink data transmission;

The transmitter 503 is configured to send the first indication information to the terminal.

Optionally, the first indication information is specifically used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the first indication information is specifically used to limit one side or both sides of the second spectrum emission template. Spectrum indicator.

Optionally, the processor 501 is further configured to:

Determining a frequency domain resource used by the terminal to perform uplink data transmission;

Determining, according to the frequency domain resource, a spectrum requirement that the terminal needs to adopt;

Generating the first indication information to indicate the spectrum requirement.

Optionally, the processor 501 is specifically configured to:

Determining the spectrum requirement according to a first location in which the first subcarrier corresponding to the frequency domain resource is located in a first subband of the system bandwidth of the base station, where the system bandwidth includes at least one subband The first sub-band includes at least one sub-carrier.

The subcarriers of the same subcarrier spacing and the subcarriers of different subcarrier spacings may exist in the system bandwidth of the base station. If the subcarriers of the same subcarrier spacing exist in the system bandwidth of the base station, that is, the subcarrier spacings between adjacent subcarriers in the system bandwidth are equal, the first subband may be the system bandwidth, if the system of the base station The first sub-band may be part of the system bandwidth, and the first sub-band may include multiple consecutive sub-carriers, and the multiple consecutive sub-carriers The subcarrier spacing between adjacent subcarriers is equal. Correspondingly, the two sides of the first subband may be subcarriers of other subcarrier spacing, or the subcarriers of one side of the first subband may be spaced apart from other subcarriers. Adjacent, while the other side is at the edge of the system bandwidth. Further, if the base station operates in a time division duplex mode, that is, the system bandwidth of the base station includes: an uplink frequency band and a downlink frequency band at any time, the first sub-band is at least a part of the uplink frequency band. Specifically, if all the subcarriers in the uplink frequency band are consecutive and the subcarrier spacings between adjacent subcarriers are equal, the first subband is an uplink frequency band. If there are subcarriers with different subcarrier spacings in the uplink frequency band, the first subband is a plurality of consecutive subcarriers in the uplink frequency band, and subcarriers between adjacent ones of the plurality of consecutive subcarriers The intervals are equal.

Optionally, the spectrum requirements are classified into at least three types according to a degree of limitation on a one-sided or two-side spectrum indicator of the second spectrum transmission template, including: a first type spectrum requirement, a second type spectrum requirement, and The third type of spectrum requirements.

Optionally, the first type of spectrum requirement and the third type of spectrum requirement are used to limit the spectrum indicators of the two sides of the second spectrum transmission template when the terminal performs uplink data transmission, and The third type of spectrum requires that the degree of limitation of the spectrum indicators of the two sides of the second spectrum transmission template be lower than the degree of limitation of the spectrum indicators of the two sides of the second spectrum transmission template. The second type of spectrum is required to define a spectrum indicator of a single side of the second spectrum transmission template when the terminal performs uplink data transmission.

Optionally, the processor 501 is specifically configured to:

In a case where the terminal is allocated to all frequency domain resources of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located occupies all positions of the first subband Determining that the spectrum requirement that the terminal needs to adopt is the first type of spectrum requirement or the plurality of the second type of spectrum requirements; or

In a case where the terminal is allocated to a frequency domain resource on an edge side of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the first subband The edge side determines, according to the first location, that a spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement; or

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband And determining that the spectrum requirement that the terminal needs to adopt is the third type of spectrum requirement.

Optionally, the processor 501 is specifically configured to:

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband Determining that the spectrum requirement that the terminal needs to adopt is the foregoing when the uplink data is not required to be sent to the terminal. The second spectrum emission template is defined.

Optionally, the processor 501 is specifically configured to:

Calculating a distance between the first position and an edge side of the first sub-band;

Determining the range to which the distance belongs;

And determining, according to the correspondence between the range and the spectrum requirement, the spectrum requirement corresponding to the range as the second type of spectrum requirement that the terminal needs to adopt.

Optionally, the processor 501 is specifically configured to:

Determining the first location according to the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth, and the allocation information of the subband in the system bandwidth; the allocation information is used to indicate The number of subbands in the system bandwidth, and the subcarriers included in each of the subbands.

Optionally, the processor 501 is further configured to:

Transmitting, to the terminal, second indication information that carries the second location, where the second indication information is used to indicate that the terminal sends a signal on a first subcarrier of the second location.

Optionally, the transmitter 503 is specifically configured to:

The first indication information is sent to the terminal by using a preset bit.

Optionally, the first indication information is used to indicate that the first number of subcarriers do not carry data on a specified location of the first subcarrier corresponding to the frequency domain resource allocated by the base station to the terminal.

Optionally, subcarriers with the same subcarrier spacing and subcarriers with different subcarrier spacings exist in the system bandwidth of the base station.

Optionally, the spectrum requirements of different terminals are different.

In the base station 500 described in FIG. 5, after the base station determines the spectrum requirement when the terminal performs uplink transmission of data, the base station may send the first indication information that carries the spectrum requirement to the terminal.

Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention. The terminal may be used to perform some or all of the steps in FIG. 2, and details are not described herein. As shown in FIG. 6, the terminal 600 includes a processor 601, a memory 602, a transceiver 603, and an antenna 604. The transceiver 603 can include a receiver 6031 and a transmitter 6032 for receiving signals respectively. And send a signal. The memory 602 is for storing instructions, the processor 601 is for executing instructions stored by the memory 602, and controls the transmitter 6032 to transmit signals. The processor 601, the memory 602, and the transceiver 603 can be implemented by one or more chips. For example, the processor 601, the memory 602, and the transceiver 603 may be fully integrated in one or more chips, or the processor 601 and the transceiver 603 may be integrated in one chip and the memory 602 integrated in another chip, specifically The form is not limited here. It can be understood by those skilled in the art that the structure of the terminal 600 shown in FIG. 6 does not constitute a limitation on the embodiment of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may also include more than the illustration. Or fewer parts, or combine some parts, or different parts. among them:

The processor 601 can be a communications processor, a baseband processor, a modem, a system on chip (SOC), a microprocessor, an application-specific integrated circuit (ASIC), or one or more An integrated circuit that controls the execution of the program of the present invention.

The memory 602 can include read only memory and random access memory and provides instructions and data to the processor 601. A portion of the memory 602 may also include a non-volatile random access memory. For example, the memory 602 can also store information of the device type. The processor 601 can be used to execute instructions stored in the memory 602, and when the processor 601 executes instructions stored in the memory 602, the processor 601 can be used to perform various steps and/or processes of the method embodiments described above. among them,

The receiver 6031 is configured to receive first indication information sent by the base station;

The processor 601 is configured to determine, according to the first indication information, a spectrum requirement when the terminal performs uplink data transmission, and process the uplink to-be-transmitted signal according to the spectrum requirement;

The transmitter 6032 is configured to send the processed signal to the base station.

Optionally, the processor 601 is specifically configured to:

Determining, according to the spectrum requirement, a first spectrum transmission template corresponding to the spectrum requirement, and processing the uplink to-be-transmitted signal according to the first spectrum transmission template; or

And determining, according to the spectrum requirement, a single-sided or dual-side spectrum indicator of the second spectrum transmission template, and performing uplink to-be-transmitted signals according to the single-sided or dual-side spectrum indicators of the second spectrum transmission template. deal with.

Optionally, the receiver 6031 is further configured to receive second indication information that is sent by the base station, where the second indication information is used to indicate that the terminal sends a signal on a first subcarrier of the second location, where The second location is a location of a first subcarrier corresponding to a frequency domain resource for uplink data transmission of the terminal in a system bandwidth of the base station;

The transmitter 6032 is specifically configured to send, to the base station, the processed signal on the first subcarrier of the second location.

In the terminal 600 described in FIG. 6, the terminal can process the uplink to-be-transmitted signal according to the spectrum requirement, so that the processed signal can meet the spectrum requirement and reduce the out-of-band energy leakage of the transmitted signal in the 5G communication system.

Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of another terminal according to an embodiment of the present invention. The terminal may be used to perform some or all of the steps in FIG. 4, and details are not described herein. As shown in FIG. 7, the terminal 700 includes a processor 701, a memory 702, a transceiver 703, and an antenna 704. The transceiver 703 can include a receiver 7031 and a transmitter 7032 for receiving signals and transmitting signals, respectively. The memory 702 is used to store instructions, and the processor 701 is configured to execute instructions stored in the memory 702 and control the transmitter 7032 to transmit signals. The processor 701, the memory 702, and the transceiver 703 can be implemented by one or more chips. For example, the processor 701, the memory 702, and the transceiver 703 may be fully integrated in one or more chips, or the processor 701 and the transceiver 703 may be integrated in one chip and the memory 702 integrated in another chip, specifically The form is not limited here. It can be understood by those skilled in the art that the structure of the terminal 700 shown in FIG. 7 does not constitute a limitation on the embodiment of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may also include more than the illustration. Or fewer parts, or combine some parts, or different parts. among them:

The processor 701 can be a communications processor, a baseband processor, a modem, a system on chip (SOC), a microprocessor, an application-specific integrated circuit (ASIC), or one or more Integration for controlling the execution of the program of the present invention Circuit.

The memory 702 can include read only memory and random access memory and provides instructions and data to the processor 701. A portion of the memory 702 can also include a non-volatile random access memory. For example, the memory 702 can also store information of the device type. The processor 701 can be used to execute instructions stored in the memory 702, and when the processor 701 executes instructions stored in the memory 702, the processor 701 can be used to perform various steps and/or processes of the above-described method embodiments. among them,

The receiver 7031 is configured to receive indication information sent by the base station;

The processor 701 is configured to determine, according to the indication information, a spectrum requirement that is required for the terminal to perform uplink data transmission, and process the uplink to-be-transmitted signal according to the spectrum requirement;

The transmitter 7032 is configured to send the processed signal to the base station.

Optionally, the indication information is used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the indication information is used to define a one-sided or two-side spectrum indicator of the second spectrum transmission template.

Optionally, the processor 701 is specifically configured to:

Determining, according to the indication information, a frequency domain resource that is used by the terminal to perform uplink data transmission;

Determining, according to the frequency domain resource, a spectrum requirement that the terminal needs to adopt.

Optionally, the processor 701 is specifically configured to:

The subcarriers of the same subcarrier spacing and the subcarriers of different subcarrier spacings may exist in the system bandwidth of the base station. If the subcarriers of the same subcarrier spacing exist in the system bandwidth of the base station, that is, the subcarrier spacings between adjacent subcarriers in the system bandwidth are equal, the first subband may be the system bandwidth, if the system of the base station The first sub-band may be part of the system bandwidth, and the first sub-band may include multiple consecutive sub-carriers, and the multiple consecutive sub-carriers The subcarrier spacing between adjacent subcarriers is equal. Correspondingly, the two sides of the first subband may be subcarriers of other subcarrier spacing, or the subcarriers of one side of the first subband may be spaced apart from other subcarriers. Adjacent, while the other side is at the edge of the system bandwidth. Further, if the base station worker In the time division duplex mode, that is, the system bandwidth of the base station includes: an uplink frequency band and a downlink frequency band at any time, the first sub-band is at least a part of the uplink frequency band. Specifically, if all the subcarriers in the uplink frequency band are consecutive and the subcarrier spacings between adjacent subcarriers are equal, the first subband is an uplink frequency band. If there are subcarriers with different subcarrier spacings in the uplink frequency band, the first subband is a plurality of consecutive subcarriers in the uplink frequency band, and subcarriers between adjacent ones of the plurality of consecutive subcarriers The intervals are equal. The spectrum requirements are classified into at least three categories according to a degree of limitation on a one-sided or two-side spectrum index of the second spectrum transmission template, including: a first type spectrum requirement, a second type spectrum requirement, and a third Class spectrum requirements.

The first type of spectrum requirements and the third type of spectrum requirements are used to limit the spectrum indicators of the two sides of the second spectrum transmission template when the terminal performs uplink data transmission, and the The third type of spectrum requires that the degree of limitation of the spectral indicators on both sides of the second spectrum transmission template be lower than the degree of limitation of the spectrum indicators on the two sides of the second spectrum transmission template by the first type of spectrum requirement; The second type of spectrum is required to define a spectrum indicator of one side of the second spectrum transmission template when the terminal performs uplink data transmission.

Optionally, the processor 701 is specifically configured to:

In the case where the terminal is allocated to a frequency domain resource in the middle of the first sub-band, The first location of the first sub-carrier corresponding to the domain resource is located in the middle of the first sub-band, and determining that the spectrum requirement that the terminal needs to adopt is the second when the uplink data transmission is not required for the terminal The spectrum emission template is defined.

Optionally, the processor 701 is specifically configured to:

Determining the range to which the distance belongs;

Optionally, the indication information includes a second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth, and allocation information of a subband in the system bandwidth, where the allocation information is used to indicate The number of subbands in the system bandwidth, and the subcarriers included in each of the subbands;

The processor 701 is further configured to determine, according to the second location of the first subcarrier corresponding to the frequency domain resource, the second location in the system bandwidth, and the allocation information of the subband in the system bandwidth, determine the first position.

Optionally, the transmitter 7032 is specifically configured to:

Transmitting the processed signal to the base station on the first subcarrier of the second location.

Optionally, the indication information includes the first location and allocation information of subbands in the system bandwidth, where the allocation information is used to indicate a number of subbands in the system bandwidth, and each of the subbands Subcarriers included;

The processor 701 is further configured to determine, according to the first location and the allocation information, a second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth;

The transmitter 7032 is specifically configured to send, to the base station, the processed signal on the first subcarrier of the second location.

Optionally, the spectrum requirements of different terminals are different.

In the terminal 700 described in FIG. 7, the terminal may enter the uplink to be sent according to the spectrum requirement. Line processing, so that the processed signal can meet the spectrum requirements and reduce the out-of-band energy leakage of the signal transmitted in the 5G communication system, and can also ensure the EVM index and improve the performance of the receiving end.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of another base station according to an embodiment of the present invention. The base station may be used to perform some or all of the steps in FIG. 4, and details are not described herein. As shown in FIG. 8, the base station 800 includes a processor 801, a memory 802, a transmitter 803, and an antenna 804. The transmitter 803 is configured to send a signal. The memory 802 is for storing instructions, the processor 801 is for executing instructions stored by the memory 802, and controls the transmitter 803 to transmit signals. The processor 801, the memory 802, and the transmitter 803 can be implemented by one or more chips. For example, the processor 801, the memory 802, and the transmitter 803 may be fully integrated in one or more chips, or the processor 801 and the transmitter 803 may be integrated in one chip and the memory 802 integrated in another chip, in this form. No restrictions are imposed. It can be understood by those skilled in the art that the structure of the base station 800 shown in FIG. 8 does not constitute a limitation on the embodiment of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may also include more than the illustration. Or fewer parts, or combine some parts, or different parts. among them:

The processor 801 can be a communications processor, a baseband processor, a modem, a system on chip (SOC), a microprocessor, an application-specific integrated circuit (ASIC), or one or more An integrated circuit that controls the execution of the program of the present invention.

The memory 802 can include read only memory and random access memory and provides instructions and data to the processor 801. A portion of the memory 802 may also include a non-volatile random access memory. For example, the memory 802 can also store information of the device type. The processor 801 can be used to execute instructions stored in the memory 802, and when the processor 801 executes instructions stored in the memory 802, the processor 801 can be used to perform various steps and/or processes of the method embodiments described above. among them,

The processor 801 is configured to:

Determining allocation information of subbands in a system bandwidth of the base station, where the allocation information is used to indicate a number of subbands in the system bandwidth, and subcarriers included in each of the subbands;

Generating indication information carrying the allocation information;

The transmitter 803 is configured to send the indication information to the terminal.

Optionally, the allocation information is sent by the base station in a manner of public information or multicast; or the allocation information is specifically sent by the base station to the terminal.

Optionally, the indication information further includes: in a first subband of the system bandwidth of the base station, a first location where the first subcarrier corresponding to the frequency domain resource for performing uplink data transmission by the terminal is located; or,

The indication information further includes a second location of the first subcarrier corresponding to the frequency domain resource that the terminal performs uplink data transmission in a system bandwidth of the base station.

In the base station 800 described in FIG. 8, the base station may transmit, to the terminal, indication information carrying the allocation information of the subbands in the system bandwidth of the base station.

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of a communication system according to an embodiment of the present invention. As shown in FIG. 9, the communication system 900 includes a base station 901 and a terminal 902, wherein the base station 901 can be the base station 500 described in FIG. 5, and the terminal 902 can be the terminal 600 described in FIG. The base station 901 and the terminal 902 may be used to perform some or all of the steps in FIG. 2 . For details, refer to the related description in FIG. 2 , and details are not described herein.

Please refer to FIG. 10. FIG. 10 is a schematic structural diagram of another communication system according to an embodiment of the present invention. As shown in FIG. 10, the communication system 1000 includes a base station 1001 and a terminal 1002, wherein the base station 1001 can be the base station 800 described in FIG. 8, and the terminal 1002 can be the terminal 700 described in FIG. The base station 1001 and the terminal 1002 may be used to perform some or all of the steps in FIG. 4 . For details, refer to the related description in FIG. 4 , and details are not described herein.

It should be noted that, for the foregoing various method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because some steps may be performed in other orders or concurrently in accordance with the present application. Secondly, those skilled in the art should also know that the embodiments described in the specification are excellent. In selected embodiments, the actions and modules involved are not necessarily required by the present application.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not described in detail in a certain embodiment can be referred to the related descriptions of other embodiments.

The steps in the method of the embodiment of the present invention may be sequentially adjusted, merged, and deleted according to actual needs.

The units in the apparatus of the embodiment of the present invention may be combined, divided, and deleted according to actual needs.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, Read-Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.

The data transmission method, device and system provided by the embodiments of the present invention are described in detail. The principles and implementation manners of the present invention are described in the specific examples. The description of the above embodiments is only used to help understanding. The method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and the scope of application. It is understood to be a limitation of the invention.

Claims

A data transmission method is characterized in that the method is applied to a process in which a base station performs uplink data scheduling on a terminal, and the method includes:

The base station generates first indication information, where the first indication information is used to indicate a spectrum requirement that is required when the terminal performs uplink data transmission;

The base station sends the first indication information to the terminal.
The method according to claim 1, wherein the first indication information is specifically used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the first indication information is specifically used to define a second One-sided or two-sided spectral indicators of the spectrum emission template.
The method according to claim 1 or 2, wherein the method further comprises:

Determining, by the base station, a frequency domain resource that is used by the terminal to perform uplink data transmission;

Determining, by the base station, a spectrum requirement that the terminal needs to adopt according to the frequency domain resource;

The base station generates the first indication information to indicate the spectrum requirement.
The method according to claim 3, wherein the base station determines, according to the frequency domain resource, a spectrum requirement that the terminal needs to adopt, including:

Determining, by the base station, the spectrum requirement according to a first location where the first subcarrier corresponding to the frequency domain resource is located in a first subband of the system bandwidth of the base station, where the system bandwidth includes at least A subband, the first subband comprising at least one subcarrier.
The method according to claim 4, wherein the first sub-band comprises a plurality of consecutive sub-carriers, and sub-carrier spacing between adjacent ones of the plurality of consecutive sub-carriers is equal.
The method of claim 5, wherein the first sub-band is at least a portion of the upstream frequency band if the system bandwidth comprises an uplink frequency band and a downlink frequency band.
The method according to any one of claims 2 to 6, wherein the spectrum requirements are classified into at least three categories according to a degree of limitation on a one-sided or two-sided spectrum index of the second spectrum transmission template. These include: the first type of spectrum requirements, the second type of spectrum requirements, and the third type of spectrum requirements.
The method according to claim 7, wherein the first type of spectrum requirement and the third type of spectrum requirement are both used for the second spectrum transmission when the terminal performs uplink data transmission. The spectrum indicators of the two sides of the template are defined, and the third type of spectrum requires that the spectrum indicators of the two sides of the second spectrum transmission template are less defined than the first type of spectrum requirements for the second spectrum. The degree of limitation of the spectrum indicator of the two sides of the transmission template is defined; the spectrum of the second type is used to define a spectrum indicator of the single side of the second spectrum transmission template when the terminal performs uplink data transmission.
The method according to claim 8, wherein the base station is in a first sub-band corresponding to the frequency domain resource according to a first sub-band in a first sub-band of a system bandwidth of the base station. Determining the spectrum requirements include:

In a case where the terminal is allocated to all frequency domain resources of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located occupies all positions of the first subband Determining, by the base station, that a spectrum requirement to be adopted by the terminal is the first type of spectrum requirement or a plurality of the second type of spectrum requirements; or

In a case where the terminal is allocated to a frequency domain resource on an edge side of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the first subband On the edge side, the base station determines, according to the first location, that a spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement; or

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband And determining, by the base station, that the spectrum requirement that the terminal needs to adopt is the third type of spectrum requirement.
The method according to any one of claims 4 to 6, wherein the base station according to the first subcarrier corresponding to the frequency domain resource in the first subband of the system bandwidth of the base station At the first location, determining the spectrum requirements includes:

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband And determining, by the base station, that the spectrum requirement that the terminal needs to adopt is that the second spectrum emission template is not required to perform uplink data transmission on the terminal.
The method according to claim 9, wherein the determining, by the base station, the spectrum requirement that the terminal needs to adopt according to the first location is that the second type of spectrum requirement comprises:

The base station calculates a distance between the first location and an edge side of the first sub-band;

Determining, by the base station, a range to which the distance belongs;

The base station determines, according to the correspondence between the range and the spectrum requirement, the spectrum requirement corresponding to the range as the second type spectrum requirement that the terminal needs to adopt.
The method according to any one of claims 4 to 11, wherein the method further comprises:

Determining, by the base station, the first location according to the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth, and the allocation information of the subband in the system bandwidth; the allocation information Used to indicate the number of subbands in the system bandwidth, and the subcarriers included in each of the subbands.
The method of claim 12, wherein the method further comprises:

The base station sends the second indication information that carries the second location to the terminal, where the second indication information is used to indicate that the terminal sends a signal on the first subcarrier of the second location.
The method according to any one of claims 1 to 13, wherein the sending, by the base station, the first indication information to the terminal comprises:

The base station sends the first indication information to the terminal by using a preset bit.
The method according to any one of claims 1 to 13, wherein the first indication information is used to indicate a designated location of a first subcarrier corresponding to a frequency domain resource allocated by the base station to the terminal. The first number of subcarriers are reserved without carrying data.
The method according to any one of claims 1 to 13, wherein sub-carriers of the same sub-carrier spacing and sub-carriers of different sub-carrier spacings exist in the system bandwidth of the base station.
The method according to any one of claims 1 to 13, characterized in that the spectrum requirements of different terminals are different.
A data transmission method, comprising:

Receiving, by the terminal, first indication information sent by the base station;

Determining, according to the first indication information, the spectrum requirement that the terminal needs to use for uplink data transmission;

The terminal processes the uplink to-be-transmitted signal according to the spectrum requirement, and sends the processed signal to the base station.
The method according to claim 18, wherein the processing, by the terminal, the uplink to-be-transmitted signal according to the spectrum requirement comprises:

Determining, by the terminal according to the spectrum requirement, a first spectrum transmission template corresponding to the spectrum requirement, and processing the uplink to-be-sent signal according to the first spectrum transmission template; or

The terminal determines the spectrum indicator of the one-side or the two-side of the second spectrum transmission template according to the spectrum requirement, and processes the uplink to-be-transmitted signal according to the single-sided or dual-side spectrum indicator of the second spectrum transmission template.
The method according to claim 18 or 19, wherein the method further comprises:

The terminal receives the second indication information that is sent by the base station, where the second indication information is used to indicate that the terminal sends a signal on the first subcarrier of the second location, and the second location is that the terminal performs uplink The location of the first subcarrier corresponding to the frequency domain resource of the data transmission in the system bandwidth of the base station;

Sending, by the terminal, the processed signal to the base station includes:

The terminal transmits the processed signal to the base station on the first subcarrier of the second location.
A data transmission method, comprising:

The terminal receives the indication information sent by the base station;

Determining, according to the indication information, the spectrum requirement that the terminal needs to use for uplink data transmission;

The terminal processes the uplink to-be-transmitted signal according to the spectrum requirement, and sends the processed signal to the base station.
The method according to claim 21, wherein the indication information is used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the indication information is used to define a one side of a second spectrum emission template. Or bilateral spectrum indicators.
The method according to claim 21 or 22, wherein the determining, by the terminal, the spectrum requirements that the terminal needs to use for uplink data transmission according to the indication information includes:

Determining, by the terminal, the frequency domain resource that is used by the terminal to perform uplink data transmission according to the indication information;

The terminal determines, according to the frequency domain resource, a spectrum requirement that the terminal needs to adopt.
The method according to claim 23, wherein the determining, by the terminal, the spectrum requirements that the terminal needs to adopt according to the frequency domain resource includes:

Determining, by the terminal, the spectrum requirement according to a first location where the first subcarrier corresponding to the frequency domain resource is located in a first subband of the system bandwidth of the base station, where the system bandwidth includes at least A subband, the first subband comprising at least one subcarrier.
The method according to claim 24, wherein the first sub-band comprises a plurality of consecutive sub-carriers, and sub-carrier spacing between adjacent ones of the plurality of consecutive sub-carriers is equal.
The method of claim 25, wherein the first sub-band is at least a portion of the upstream frequency band if the system bandwidth comprises an uplink frequency band and a downlink frequency band.
The method according to any one of claims 22 to 26, wherein the spectrum requirements are classified into at least three categories according to a degree of limitation on a one-sided or two-sided spectral index of the second spectrum transmission template. These include: the first type of spectrum requirements, the second type of spectrum requirements, and the third type of spectrum requirements.
The method according to claim 27, wherein the first type of spectrum requirement and the third type of spectrum requirement are both used to double the second spectrum transmission template when uplink data is sent to the terminal. The spectrum indicator of the side is defined, and the third type of spectrum requires that the spectrum indicator of the two sides of the second spectrum transmission template be limited to be lower than the first type of spectrum requirement for the second spectrum emission template. The degree of limitation of the spectrum indicator of the two sides; the spectrum of the second type is required to define a spectrum indicator of one side of the second spectrum transmission template when the terminal performs uplink data transmission.
The method according to claim 28, wherein the terminal is in a first sub-band corresponding to the frequency domain resource according to a first sub-band in a first sub-band of a system bandwidth of the base station Determining the spectrum requirements include:

In a case where the terminal is allocated to all frequency domain resources of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located occupies all positions of the first subband Determining, by the terminal, that the spectrum requirement that the terminal needs to adopt is the first type of spectrum requirement or the plurality of the second type of spectrum requirements; or

In a case where the terminal is allocated to a frequency domain resource on an edge side of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the first subband On the edge side, the terminal determines, according to the first location, that the spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement; or

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband And determining, by the terminal, that a spectrum requirement that the terminal needs to adopt is the third type of spectrum requirement.
The method according to any one of claims 24 to 26, wherein the terminal according to the first subcarrier corresponding to the frequency domain resource in the first subband of the system bandwidth of the base station At the first location, determining the spectrum requirements includes:

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband And determining, by the terminal, that the spectrum requirement that the terminal needs to adopt is not required to limit the second spectrum transmission template when the terminal performs uplink data transmission.
The method according to claim 29, wherein the determining, by the terminal, the spectrum requirement that the terminal needs to adopt according to the first location is that the second type of spectrum requirement comprises:

The terminal calculates a distance between the first location and an edge side of the first sub-band;

Determining, by the terminal, a range to which the distance belongs;

The terminal determines, according to the correspondence between the range and the spectrum requirement, the spectrum requirement corresponding to the range as the second type spectrum requirement that the terminal needs to adopt.
The method according to any one of claims 24 to 31, wherein the indication information comprises a first subcarrier corresponding to the frequency domain resource in a second location in the system bandwidth and the system bandwidth. Sub-band allocation information, the allocation information is used to indicate the number of sub-bands in the system bandwidth, and the sub-carriers included in each of the sub-bands; the method further includes:

The terminal determines the first location according to a second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth, and allocation information of the subband in the system bandwidth.
The method of claim 32 wherein said terminal will process the signal Sending to the base station includes:

The terminal transmits the processed signal to the base station on the first subcarrier of the second location.
The method according to any one of claims 24 to 31, wherein the indication information comprises allocation information of the first location and subbands in the system bandwidth, the allocation information being used to indicate the system The number of subbands in the bandwidth, and the subcarriers included in each of the subbands; the method further includes:

Determining, by the terminal, the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth according to the first location and the allocation information;

Sending, by the terminal, the processed signal to the base station includes:

The terminal transmits the processed signal to the base station on the first subcarrier of the second location.
The method according to any one of claims 21 to 34, wherein sub-carriers of the same sub-carrier spacing and sub-carriers of different sub-carrier spacings exist in a system bandwidth of the base station.
The method according to any one of claims 21 to 34, characterized in that the spectrum requirements of the different terminals are different.
A data transmission method is characterized in that the method is applied to a process in which a base station performs uplink data scheduling on a terminal, and the method includes:

Determining, by the base station, allocation information of subbands in a system bandwidth of the base station, where the allocation information is used to indicate a number of subbands in the system bandwidth, and subcarriers included in each of the subbands;

The base station generates indication information that carries the allocation information;

The base station sends the indication information to the terminal.
The method according to claim 37, wherein the allocation information is sent by the base station in a public information or multicast manner; or the allocation information is specifically sent by the base station to the method Terminal's.
The method according to claim 37 or claim 38, wherein the indication information further comprises a frequency domain in which the terminal performs uplink data transmission in the first subband of the system bandwidth of the base station. The first location where the first subcarrier corresponding to the resource is located; or,

The indication information further includes a second location of the first subcarrier corresponding to the frequency domain resource that the terminal performs uplink data transmission in a system bandwidth of the base station.
The method according to claim 39, wherein the first sub-band comprises a plurality of consecutive sub-carriers, and sub-carrier spacing between adjacent ones of the plurality of consecutive sub-carriers is equal.
The method of claim 40, wherein the first sub-band is at least a portion of the upstream frequency band if the system bandwidth comprises an uplink frequency band and a downlink frequency band.
A base station, comprising: a processor and a transmitter coupled to the processor, wherein:

The processor is configured to generate first indication information, where the first indication information is used to indicate a spectrum requirement that is required when the terminal performs uplink data transmission;

The transmitter is configured to send the first indication information to the terminal.
The base station according to claim 42, wherein the first indication information is specifically used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the first indication information is specifically used to define a second One-sided or two-sided spectral indicators of the spectrum emission template.
The base station according to claim 42 or 43, wherein the processor is further configured to:

Determining a frequency domain resource used by the terminal to perform uplink data transmission;

Determining, according to the frequency domain resource, a spectrum requirement that the terminal needs to adopt;

Generating the first indication information to indicate the spectrum requirement.
The base station according to claim 44, wherein the processor is specifically configured to:

Determining the spectrum requirement according to a first location in which the first subcarrier corresponding to the frequency domain resource is located in a first subband of the system bandwidth of the base station, where the system bandwidth includes at least one subband The first sub-band includes at least one sub-carrier.
The base station according to claim 45, wherein the first sub-band comprises a plurality of consecutive sub-carriers, and sub-carrier spacing between adjacent ones of the plurality of consecutive sub-carriers is equal.
The base station according to claim 46, wherein said first sub-band is at least a part of said uplink frequency band if said system bandwidth comprises an uplink frequency band and a downlink frequency band.
The base station according to any one of claims 45 to 47, wherein the spectrum requirements are classified into at least three types according to a degree of limitation on a one-sided or two-sided spectrum index of the second spectrum transmission template. These include: the first type of spectrum requirements, the second type of spectrum requirements, and the third type of spectrum requirements.
The base station according to claim 48, wherein the first type of spectrum requirement and the third type of spectrum requirement are both used to double the second spectrum transmission template when uplink data is sent to the terminal. The spectrum indicator of the side is defined, and the third type of spectrum requires that the spectrum indicator of the two sides of the second spectrum transmission template be limited to be lower than the first type of spectrum requirement for the second spectrum emission template. The degree of limitation of the spectrum indicator of the two sides; the spectrum of the second type is required to define a spectrum indicator of one side of the second spectrum transmission template when the terminal performs uplink data transmission.
The base station according to claim 49, wherein the processor is specifically configured to:

In a case where the terminal is allocated to all frequency domain resources of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located occupies all positions of the first subband Determining that the spectrum requirement that the terminal needs to adopt is the first type of spectrum requirement or the plurality of the second type of spectrum requirements; or

In a case where the terminal is allocated to a frequency domain resource on an edge side of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the first subband The edge side determines, according to the first location, that a spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement; or

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband And determining that the spectrum requirement that the terminal needs to adopt is the third type of spectrum requirement.
The base station according to any one of claims 45 to 47, wherein the processor is specifically configured to:

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband Determining that the spectrum requirement that the terminal needs to adopt is the foregoing when the uplink data is not required to be sent to the terminal. The second spectrum emission template is defined.
The base station according to claim 50, wherein the processor is specifically configured to:

Calculating a distance between the first position and an edge side of the first sub-band;

Determining the range to which the distance belongs;

And determining, according to the correspondence between the range and the spectrum requirement, the spectrum requirement corresponding to the range as the second type of spectrum requirement that the terminal needs to adopt.
The base station according to any one of claims 45 to 52, wherein the processor is further configured to:

Determining the first location according to the second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth, and the allocation information of the subband in the system bandwidth; the allocation information is used to indicate The number of subbands in the system bandwidth, and the subcarriers included in each of the subbands.
The base station according to claim 53, wherein the processor is further configured to:

Transmitting, to the terminal, second indication information that carries the second location, where the second indication information is used to indicate that the terminal sends a signal on a first subcarrier of the second location.
The base station according to any one of claims 42 to 54, wherein the transmitter is specifically configured to:

The first indication information is sent to the terminal by using a preset bit.
The base station according to any one of claims 42 to 54, wherein the first indication information is used to indicate that the first location of the first subcarrier corresponding to the frequency domain resource allocated by the base station to the terminal is reserved. The number of subcarriers does not carry data.
The base station according to any one of claims 42 to 54, wherein subcarriers of the same subcarrier spacing and subcarriers of different subcarrier spacings exist in the system bandwidth of the base station.
Base station according to claims 42-54, characterized in that the spectrum requirements of the different terminals are different.
A terminal, comprising a processor, a receiver coupled to the processor, and a transmitter coupled to the processor, wherein:

The receiver is configured to receive first indication information sent by the base station;

The processor is configured to determine, according to the first indication information, that the terminal performs uplink data transmission The spectrum requirements to be used, and the processing of the uplink to be transmitted according to the spectrum requirements;

The transmitter is configured to send the processed signal to the base station.
The terminal according to claim 59, wherein the processor is specifically configured to:

Determining, according to the spectrum requirement, a first spectrum transmission template corresponding to the spectrum requirement, and processing the uplink to-be-transmitted signal according to the first spectrum transmission template; or

The one-side or two-side spectrum indicator of the second spectrum transmission template is determined according to the spectrum requirement, and the uplink to-be-transmitted signal is processed according to the one-side or two-side spectrum indicator of the second spectrum transmission template.
A terminal according to claim 59 or 60, characterized in that

The receiver is further configured to receive second indication information that is sent by the base station, where the second indication information is used to indicate that the terminal sends a signal on a first subcarrier of the second location, where the second location is a location of a first subcarrier corresponding to a frequency domain resource for uplink data transmission by the terminal in a system bandwidth of the base station;

The transmitter is specifically configured to send the processed signal to the base station on the first subcarrier of the second location.
A terminal, comprising: a processor, a receiver coupled to the processor, and a transmitter coupled to the processor, wherein:

The receiver is configured to receive indication information sent by the base station;

The processor is configured to determine, according to the indication information, a spectrum requirement that the terminal needs to perform uplink data transmission, and process the uplink to-be-transmitted signal according to the spectrum requirement;

The transmitter is configured to send the processed signal to the base station.
The terminal according to claim 62, wherein the indication information is used to indicate a first spectrum transmission template corresponding to the spectrum requirement; or the indication information is used to define a one side of a second spectrum emission template. Or bilateral spectrum indicators.
The terminal according to claim 62 or 63, wherein the processor is specifically configured to: determine, according to the indication information, a frequency domain resource that is used when the terminal performs uplink data transmission;

Determining, according to the frequency domain resource, a spectrum requirement that the terminal needs to adopt.
The terminal according to claim 64, wherein the processor is specifically configured to:

Determining the spectrum requirement according to a first location in which the first subcarrier corresponding to the frequency domain resource is located in a first subband of the system bandwidth of the base station, where the system bandwidth includes at least one subband The first sub-band includes at least one sub-carrier.
The terminal according to claim 65, wherein the first sub-band comprises a plurality of consecutive sub-carriers, and sub-carrier spacing between adjacent ones of the plurality of consecutive sub-carriers is equal.
The terminal according to claim 66, wherein if the system bandwidth comprises an uplink frequency band and a downlink frequency band, the first sub-band is at least a part of the uplink frequency band.
The terminal according to any one of claims 65 to 67, wherein the spectrum requirements are classified into at least three categories according to a degree of limitation on a one-sided or two-side spectrum index of the second spectrum transmission template. These include: the first type of spectrum requirements, the second type of spectrum requirements, and the third type of spectrum requirements.
The terminal according to claim 68, wherein the first type of spectrum requirement and the third type of spectrum requirement are both used to double the second spectrum transmission template when uplink data is sent to the terminal. The spectrum indicator of the side is defined, and the third type of spectrum requires that the spectrum indicator of the two sides of the second spectrum transmission template be limited to be lower than the first type of spectrum requirement for the second spectrum emission template. The degree of limitation of the spectrum indicator of the two sides; the spectrum of the second type is required to define a spectrum indicator of one side of the second spectrum transmission template when the terminal performs uplink data transmission.
The terminal according to claim 69, wherein the processor is specifically configured to:

In a case where the terminal is allocated to all frequency domain resources of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located occupies all positions of the first subband Determining that the spectrum requirement that the terminal needs to adopt is the first type of spectrum requirement or the plurality of the second type of spectrum requirements; or

In a case where the terminal is allocated to a frequency domain resource on an edge side of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the first subband The edge side determines, according to the first location, that a spectrum requirement that the terminal needs to adopt is the second type of spectrum requirement; or

In the case where the terminal is allocated to a frequency domain resource in the middle of the first sub-band, The first location where the first subcarrier corresponding to the domain resource is located is located in the middle of the first subband, and the spectrum requirement that the terminal needs to adopt is determined to be the third type of spectrum requirement.
The terminal according to any one of claims 65 to 67, wherein the processor is specifically configured to:

In a case where the terminal is allocated to a frequency domain resource in the middle of the first subband, a first location where the first subcarrier corresponding to the frequency domain resource is located is located in the middle of the first subband And determining that the spectrum requirement that the terminal needs to adopt is that the second spectrum emission template is not required to perform uplink data transmission on the terminal.
The terminal according to claim 70, wherein the processor is specifically configured to:

Calculating a distance between the first position and an edge side of the first sub-band;

Determining the range to which the distance belongs;

And determining, according to the correspondence between the range and the spectrum requirement, the spectrum requirement corresponding to the range as the second type of spectrum requirement that the terminal needs to adopt.
The terminal according to any one of claims 65 to 72, wherein the indication information includes a first subcarrier corresponding to the frequency domain resource, a second location in the system bandwidth, and the system bandwidth. Subband allocation information, the allocation information is used to indicate the number of subbands in the system bandwidth, and subcarriers included in each of the subbands;

The processor is further configured to determine the first location according to a second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth, and allocation information of a subband in the system bandwidth. .
The terminal according to claim 73, wherein the transmitter is specifically configured to:

Transmitting the processed signal to the base station on the first subcarrier of the second location.
The terminal according to any one of claims 65 to 72, wherein the indication information includes allocation information of the first location and subbands in the system bandwidth, and the allocation information is used to indicate the system. The number of subbands in the bandwidth, and the subcarriers included in each of the subbands;

The processor is further configured to determine, according to the first location and the allocation information, a second location of the first subcarrier corresponding to the frequency domain resource in the system bandwidth;

The transmitter is specifically configured to send the processed signal on the first subcarrier of the second location Send to the base station.
The terminal according to any one of claims 62 to 75, wherein sub-carriers of the same sub-carrier spacing and sub-carriers of different sub-carrier spacings exist in the system bandwidth of the base station.
The terminal according to any one of claims 62 to 75, characterized in that the spectrum requirements of different terminals are different.
A base station, comprising a processor and a transmitter coupled to the processor, wherein:

The processor is used to:

Determining allocation information of subbands in a system bandwidth of the base station, where the allocation information is used to indicate a number of subbands in the system bandwidth, and subcarriers included in each of the subbands;

Generating indication information carrying the allocation information;

The transmitter is configured to send the indication information to the terminal.
The base station according to claim 78, wherein the allocation information is sent by the base station in a manner of public information or multicast; or the allocation information is specifically sent by the base station to the Terminal's.
The base station according to claim 78 or 79, wherein the indication information is further included in a first subband of the system bandwidth of the base station, corresponding to a frequency domain resource for uplink data transmission by the terminal. The first location where the first subcarrier is located; or,

The indication information further includes a second location of the first subcarrier corresponding to the frequency domain resource that the terminal performs uplink data transmission in a system bandwidth of the base station.
The base station according to claim 80, wherein the first sub-band comprises a plurality of consecutive sub-carriers, and sub-carrier spacing between adjacent ones of the plurality of consecutive sub-carriers is equal.
The base station according to claim 81, wherein said first sub-band is at least a part of said uplink frequency band if said system bandwidth comprises an uplink frequency band and a downlink frequency band.
A communication system comprising the base station according to any one of claims 42 to 58 and the terminal according to any one of claims 59 to 61.
A communication system comprising the terminal according to any one of claims 62 to 77 and the base station according to any one of claims 78 to 82.