CN113015245B

CN113015245B - Data transmission processing method, data receiving processing method and device

Info

Publication number: CN113015245B
Application number: CN201911325374.XA
Authority: CN
Inventors: 周伟; 倪吉庆
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2023-10-27
Anticipated expiration: 2039-12-20
Also published as: CN113015245A

Abstract

A data transmission processing method, a data receiving processing method and a device, the method includes: determining X user equipment groups, wherein the xth user equipment group comprises Y _x A plurality of user equipments; for Y in each user equipment group _x M corresponding to each user equipment _x Data symbols are respectively subjected to zero padding operation and are expanded to N _x Data symbols, and N _x Performing point Discrete Fourier Transform (DFT) processing; n obtained by DFT processing in each user equipment group _x The data symbols are mapped to the corresponding resource elements RE after data processing or not; n is carried out on the mapped data symbols _IDFT And (3) performing Inverse Discrete Fourier Transform (IDFT) processing on the points. The application can reduce the PAPR of the data transmitting end and reduce the complexity of data receiving processing.

Description

Data transmission processing method, data receiving processing method and device

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a data transmission processing method, a data receiving processing method, and a device.

Background

In a 5G New air interface (NR) system, the downlink waveform is typically orthogonal frequency division multiplexing access (OFDMA, orthogonal Frequency Division Multiple Access), and the uplink waveform can support both OFDMA and discrete fourier transform spread-based orthogonal frequency division multiplexing (DFT-S-OFDM). Among other advantages, OFDMA waveforms are flexible resource allocation, which is easier to combine with multi-antenna techniques, but OFDMA waveforms result in a transmitted signal with a higher peak-to-average power ratio (PAPR, peak to Average Power Ratio). When the transmission signal passes through a Power Amplifier (PA), additional back-off Power is required to ensure that the transmission signal is in the linear amplification region of the PA, which may otherwise cause nonlinear distortion and generate high out-of-band leakage. The DFT-S-OFDM waveform has a single carrier characteristic, so that the PAPR is low, and no extra power back-off is needed, so that the DFT-S-OFDM waveform has higher transmitting power, and is beneficial to the coverage performance of an uplink.

An important research direction of 5G NR is NR technology research oriented to the frequency band above 52.6 GHz. When the frequency of the transmitted signal is high, the loss of spatial propagation is large, and thus a high transmission power is required to ensure coverage, which results in excessive power consumption of the base station.

Disclosure of Invention

At least one embodiment of the present invention provides a data transmission processing method, a data reception processing method, and a device, which can reduce the PAPR of a data transmission end and reduce the complexity of data reception processing.

According to one aspect of the present invention, at least one embodiment provides a data transmission processing method, which is applied to a base station, including:

determining X user equipment groups, wherein the xth user equipment group comprises Y _x Each user equipment, X is a positive integer, x=1, …, X; y is Y _x Is a positive integer;

for Y in each user equipment group _x M corresponding to each user equipment _x Data symbols are respectively subjected to zero padding operation and are expanded to N _x Data symbols, and N _x Performing point Discrete Fourier Transform (DFT) processing; the N is _x ＝2^n _x ,n _x Is a positive integer, and N _x Greater than or equal to M _x ；

N obtained by DFT processing in each user equipment group _x The data symbols are mapped to the corresponding resource units RE; wherein the data symbols of the X user equipment groups are co-mapped to On each RE;

n is carried out on the mapped data symbols _IDFT Performing Inverse Discrete Fourier Transform (IDFT) processing on the points; the N is _IDFT ＝2^n _IDFT ，n _IDFT Is a positive integer, and N _IDFT Greater thanOr is equal to

According to at least one embodiment of the invention, the number of points N of the inverse Fourier transform IDFT processing _IDFT And determining through a first parameter, wherein the first parameter comprises a channel bandwidth and a subcarrier spacing at the base station side.

According to at least one embodiment of the invention, the method further comprises:

the base station transmits one or more first signaling to each user equipment, the first signaling being used to indicate at least one of the following information:

whether the number X of the user equipment groups is larger than 1;

point N for DFT processing of user equipment group where the user equipment is located _x ；

And the user equipment and the frequency domain resource position corresponding to the user equipment group where the user equipment is located.

According to at least one embodiment of the present invention, when the first signaling is used to indicate whether the number of the ue groups is greater than 1, the first signaling is common downlink control information of the ue groups or downlink control information DCI for scheduling the ue transmissions;

and the first signaling indicates whether the number of the user equipment groups is larger than 1 or not through different values of the preset first bit.

According to at least one embodiment of the present invention, the point N used for instructing the user equipment group where the user equipment is located to perform DFT processing in the first signaling _x When the value is taken, the first signaling is user group public downlink control information or DCI for scheduling the user equipment transmission;

the first signaling indicates the N through a preset second bit field _x Or indicate the value of N _x Index information in a preconfigured set of values, or indicating the N _x And N _IDFT Or indicate N _x /N _IDFT Index information in preconfigured ratio set。

According to at least one embodiment of the present invention, when the first signaling indicates the ue and the frequency domain resource location corresponding to the ue group where the ue is located:

the first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding partial bandwidth BWP ₁ And a frequency domain resource allocation length L, and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ ；

Or alternatively, the first and second heat exchangers may be,

the first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding BWP ₁ And a frequency domain resource allocation length L and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ Offset values between;

or alternatively, the first and second heat exchangers may be,

the first signaling indicates a starting position S of a frequency domain resource of a user equipment group where the user equipment is located in the whole carrier bandwidth or corresponding BWP ₂ And the frequency domain resource allocation length L of the user equipment and the starting position S of the frequency domain resource allocation of the user equipment ₁ Offset values between them.

According to another aspect of the present invention, there is also provided a data receiving and processing method, applied to a terminal, including:

receiving a signaling, and determining the number X of the user equipment groups according to the signaling;

when the number X of the user equipment groups is 1, determining a first starting position and a first time domain length of the user equipment in the complete time domain data signal according to the resource allocation information; intercepting a first data signal segment from the received complete time domain data signal according to the determined first starting position and first time domain length; and carrying out data processing on the first data signal segment to acquire data information sent to the user equipment by the base station.

According to at least one embodiment of the present invention, when the number X of the user equipment groups is greater than 1, data processing is performed on all the received time domain data to obtain data information sent by the base station to the user equipment.

According to at least one embodiment of the present invention, the step of receiving signaling includes:

the user equipment receiving base station transmits one or more first signaling, wherein the first signaling is used for indicating at least one of the following information:

whether the number of the user equipment groups is more than 1;

The user equipment and the frequency domain resource position corresponding to the user equipment group where the user equipment is located;

the first signaling indicates the N through a preset second bit field _x Or indicate the value of N _x Index information in a preconfigured set of values, or indicating the N _x And N _IDFT Or indicate N _x /N _IDFT Index information in a preconfigured set of ratios;

the first signaling indicates a frequency of the user equipmentStarting position S of domain resource in whole carrier bandwidth or corresponding partial Bandwidth (BWP) ₁ The frequency domain resource allocation length L and the starting position S2 of the frequency domain resource allocation of the user equipment group where the user equipment is located;

or alternatively, the first and second heat exchangers may be,

the first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding partial Bandwidth (BWP) ₁ And a frequency domain resource allocation length L and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ Offset values between;

or alternatively, the first and second heat exchangers may be,

the first signaling indicates a starting position S of a frequency domain resource of a user equipment group where the user equipment is located in an entire carrier bandwidth or a corresponding partial Bandwidth (BWP) ₂ And the frequency domain resource allocation length L of the user equipment and the starting position S of the frequency domain resource allocation of the user equipment ₁ Offset values between them.

According to another aspect of the present invention, there is provided a base station comprising:

a grouping determination module for determining X user equipment groups, wherein the xth user equipment group comprises Y _x Each user equipment, X is a positive integer, x=1, …, X; y is Y _x Is a positive integer;

a first transformation module for Y in each user equipment group _x M corresponding to each user equipment _x Data symbols are respectively subjected to zero padding operation and are expanded to N _x Data symbols, and N _x Performing point Discrete Fourier Transform (DFT) processing; the N is _x ＝2^n _x ,n _x Is a positive integer, and N _x Greater than or equal to M _x ；

A mapping module for obtaining N from DFT processing in each user equipment group _x The data symbols are mapped to the corresponding resource units RE; wherein the data symbols of the X user equipment groups are co-mapped toOn the resource elements RE;

a second transformation module, configured to perform N on the mapped data symbol _IDFT Performing Inverse Discrete Fourier Transform (IDFT) processing on the points; the N is _IDFT ＝2^n _IDFT ，n _IDFT Is a positive integer, and N _IDFT Greater than or equal to

According to another aspect of the present invention, there is provided a base station comprising a transceiver and a processor, wherein,

The processor determines X user equipment groups, wherein the xth user equipment group comprises Y _x Each user equipment, X is a positive integer, x=1, …, X; y is Y _x Is a positive integer;

N obtained by DFT processing in each user equipment group _x The data symbols are mapped to the corresponding resource units RE; wherein the data symbols of the X user equipment groups are co-mapped toOn the resource elements RE;

n is carried out on the mapped data symbols _IDFT Performing Inverse Discrete Fourier Transform (IDFT) processing on the points; the N is _IDFT ＝2^n _IDFT ，n _IDFT Is a positive integer, and N _IDFT Greater than or equal to

According to another aspect of the present invention, there is provided a base station comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the method as described above.

According to another aspect of the present invention, there is provided a user equipment comprising:

the signaling receiving module is used for receiving the signaling and determining the number X of the user equipment groups according to the signaling;

The first receiving and processing module is used for determining a first starting position and a first time domain length of the user equipment in the complete time domain data signal according to the resource allocation information when the number X of the user equipment groups is 1; intercepting a first data signal segment from the received complete time domain data signal according to the determined first starting position and first time domain length; and carrying out data processing on the first data signal segment to acquire data information sent to the user equipment by the base station.

According to another aspect of the present invention, there is provided a user equipment comprising a transceiver and a processor, wherein,

the transceiver is used for receiving signaling;

the processor is used for determining the number X of the user equipment groups according to the signaling; the method comprises the steps of,

According to another aspect of the present application, there is provided a user equipment comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the method as described above.

According to another aspect of the application, at least one embodiment provides a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the steps of the method as described above.

Compared with the prior art, the data transmission processing method, the data receiving processing method and the data receiving processing equipment provided by the embodiment of the application have at least the following advantages:

the embodiment of the application realizes grouping the user equipment at the base station side, can respectively perform DFT processing on the data symbols of each user equipment group, and then performs IDFT processing on the data symbols after DFT processing of all the user equipment groups. In addition, when the number of the user equipment groups is 1, the embodiment of the application can realize the single carrier characteristic waveform of the transmitting end, reduce the PAPR of the transmitting end and improve the downlink coverage, and in addition, the calculation complexity and the processing time delay of the receiving of the user equipment can be reduced. In addition, the base station can dynamically indicate the DFT point number through the downlink control information, so that the problem that the terminal cannot determine the DFT point number M is solved. And the base station side can dynamically adjust the size of the DFT point number M according to the size of the scheduled frequency domain resource, so that the implementation flexibility is improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a transmitting end based on DFT-S-OFDM;

fig. 3 is a flowchart of a data transmission processing method according to an embodiment of the present invention;

fig. 4 is a transmission example diagram of a data transmitting end according to an embodiment of the present invention;

fig. 5 is an example of an indication manner of the first signaling provided in the embodiment of the present invention;

fig. 6 is another example of an indication manner of the first signaling provided in the embodiment of the present invention;

fig. 7 is a schematic diagram of another example of an indication manner of the first signaling according to the embodiment of the present invention;

fig. 8 is a flowchart of a data receiving and processing method according to an embodiment of the present invention;

FIG. 9 is an exemplary diagram of determining a segment of a time domain signal in which the time domain signal is located in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention;

Fig. 11 is a schematic diagram of another structure of a base station according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present application;

fig. 13 is another schematic structural diagram of a ue according to an embodiment of the present application.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. "and/or" in the specification and claims means at least one of the connected objects.

The techniques described herein are not limited to NR systems and long term evolution (Long Time Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems and may also be used for various wireless communication systems such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system may implement radio technologies such as CDMA2000, universal terrestrial radio access (Universal Terrestrial Radio Access, UTRA), and the like. UTRA includes wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as the global system for mobile communications (Global System for Mobile Communication, GSM). OFDMA systems may implement radio technologies such as ultra mobile broadband (UltraMobile Broadband, UMB), evolved UTRA (E-UTRA), IEEE 802.21 (Wi-Fi), IEEE802.16 (WiMAX), IEEE 802.20, flash-OFDM, and the like. UTRA and E-UTRA are parts of the universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS). LTE and higher LTE (e.g., LTE-a) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-a and GSM are described in the literature from an organization named "third generation partnership project" (3rd Generation Partnership Project,3GPP). CDMA2000 and UMB are described in the literature from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. However, the following description describes an NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration as set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Referring to fig. 1, fig. 1 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a User terminal or a User Equipment (UE), and the terminal 11 may be a terminal-side Device such as a mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, which is not limited to a specific type of the terminal 11 in the embodiment of the present invention. The network device 12 may be a base station and/or a core network element, where the base station may be a 5G or later version base station (e.g., a gNB, a 5G NR NB, etc.), or a base station in another communication system (e.g., an eNB, a WLAN access point, or other access points, etc.), where the base station may be referred to as a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, a BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary, and in the embodiment of the present invention, the base station in the NR system is merely an example, but is not limited to a specific type of the base station.

The base stations may communicate with the terminal 11 under the control of a base station controller, which may be part of the core network or some base stations in various examples. Some base stations may communicate control information or user data with the core network over a backhaul. In some examples, some of these base stations may communicate with each other directly or indirectly over a backhaul link, which may be a wired or wireless communication link. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multicarrier transmitter may transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multicarrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.

The base station may communicate wirelessly with the terminal 11 via one or more access point antennas. Each base station may provide communication coverage for a respective corresponding coverage area. The coverage area of an access point may be partitioned into sectors that form only a portion of that coverage area. A wireless communication system may include different types of base stations (e.g., macro base stations, micro base stations, or pico base stations). The base station may also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations may be associated with the same or different access networks or operator deployments. The coverage areas of different base stations, including coverage areas of the same or different types of base stations, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks, may overlap.

The communication link in the wireless communication system may include an Uplink for carrying Uplink (UL) transmissions (e.g., from the terminal 11 to the network device 12) or a Downlink for carrying Downlink (DL) transmissions (e.g., from the network device 12 to the terminal 11). UL transmissions may also be referred to as reverse link transmissions, while DL transmissions may also be referred to as forward link transmissions. Downlink transmissions may be made using licensed bands, unlicensed bands, or both. Similarly, uplink transmissions may be made using licensed bands, unlicensed bands, or both.

As described in the background art, when the frequency of the transmitted signal is high, the loss of signal space propagation is large, so that a high transmission power is required to ensure coverage, and therefore, for the downlink, if a waveform with a single carrier characteristic with a small power back-off is adopted, the transmission power can be increased without increasing the cost of PA hardware, which is beneficial to enhancing the downlink coverage. Meanwhile, the power backoff has obvious influence on the energy consumption of the base station, especially when the frequency band is more than 52.6GHz, the base station side often works in the scene of ultra-wideband and large-scale antenna arrays, and the energy saving of the base station side is also facilitated by adopting smaller power backoff.

Fig. 2 is a schematic diagram of a structure of a transmitting end of a single carrier transmission scheme based on DFT-S-OFDM, in which a transform domain coding (Transform precoder) module represents discrete fourier transform (DFT, discrete Fourier Transform) processing of the transmitting end, and the number M of DFT points depends on the size of scheduled frequency domain resources. Wherein the single carrier signal generation module represents inverse fast fourier transform (IFFT, inverse Fast Fourier Transform) at the transmitting end, parallel-to-serial transform, and cyclic prefix addition processing, the number of IFFT points N depends on the channel bandwidth and subcarrier spacing of the network configuration (e.g., the system contains a 20MHz channel bandwidth and employs a 15kHz subcarrier spacing, where n=2048). It should be noted that the values of M and N are different.

When the uplink adopts a single carrier wave shape, the terminal can determine the point number M of the DFT only by determining the size of the frequency domain resource allocated to the terminal through the uplink scheduling information. In downlink, a single carrier waveform is used, and a base station may need to transmit downlink data to multiple terminals at the same time. If the data of each terminal is individually DFT-processed and then IFFT-processed together in the uplink transmission method, the single carrier characteristics are lost, and it is difficult to effectively reduce the PAPR. Therefore, in order to ensure low PAPR characteristics of a single carrier, if DFT processing is performed on data of a plurality of terminals at once, the resource size of other terminals cannot be known by the scheduling information of the individual terminals, and therefore it is difficult to determine the number M of DFT points.

On the other hand, considering that downlink adopts single carrier transmission mainly aiming at 52.6GHz, the available channel bandwidth is larger at the moment, so that the number of points of the originating IFFT processing is increased. For example, the channel bandwidth increases to 1GHz, and if the maximum subcarrier spacing of 240kHz is still employed, the number of IFFT points needs to increase to 8192. A larger number of IFFT points also increases the computational complexity and processing delay of terminal side reception.

In order to solve one or more of the above problems, an embodiment of the present invention provides a data transmission processing and reception processing method, which can effectively reduce the PAPR of a data transmission end, reduce the complexity of data reception processing, and improve downlink coverage. Referring to fig. 3, a data transmission processing method provided by an embodiment of the present invention is applied to a base station side, and includes:

step 31, determining X user equipment groups, wherein the xth user equipment group comprises Y _x Each user equipment, X is a positive integer, x=1, …, X; y is Y _x Is a positive integer.

Here, when transmitting data to 1 or more user equipments, the base station side may divide the user equipments into X user equipment groups, and each group may include 1 or more user equipments. Specifically, the number of user equipments included in each group may be the same or different. For example, X may be 1, in which case the user devices are divided into the same user device group. X may also be an integer greater than 1, where the user devices are divided into groups.

Step 32, for Y in each user equipment group _x M corresponding to each user equipment _x Data symbols are respectively subjected to zero padding operation and are expanded to N _x Data symbols, and N _x Performing point DFT processing; the N is _x ＝2^n _x ,n _x Is a positive integer, and N _x Greater than or equal to M _x 。

Here, after grouping, Y of each user equipment group may be determined _x Data symbols corresponding to each user equipment are assumed to have M _x Data symbols that the base station needs to transmit to the user equipment in the group of user equipments. The embodiment of the invention aims at M of each user equipment group _x The number of the data symbols is N _x And (3) DFT processing of the points. By a means ofThe N is _x Is greater than or equal to M _x An integer power of 2 of (2), for example, may be greater than or equal to M _x To the smallest integer power of 2.

Taking into account N _x May be greater than M _x At this time, zero padding operation needs to be continued to expand the data symbols in the ue group to N _x And each. Of course, if N _x Equal to M _x The zero padding operation may not be required at this time, or the number of data symbols increased by the zero padding operation may be considered as 0. After the zero padding operation, N in the user equipment group can be adjusted _x N of data symbols _x Point DFT processing to obtain N _x And the DFT processed data symbols.

Here, the above N _x The point DFT process can be specifically performed according to the following formula, thereby obtaining N _x The data symbols after DFT processing:

k＝0，…，N _x -1, v represents a transport layer index;representing the (i+1) th data symbol on the (v+1) th transport layer; j is an imaginary indicator; y is ^(v) (k) Representing the DFT-processed data symbols.

Taking x=1, i.e. a total of 1 user equipment group as an example, the base station determines one or more user equipments to be scheduled on the current time domain symbol and the number of data symbols of each user equipment; the base station determines the frequency domain resource size and the resource position of each user equipment according to the information such as the number of data symbols, the channel quality and the like of each user equipment; the base station determines the point number N when the transmitting end performs DFT processing according to the total frequency domain resource size (namely the total number of the frequency domain subcarriers) required by the scheduling _x . Point number N here _x Is an integer power of 2 greater than or equal to the total number of scheduled frequency domain subcarriers. For example, the base station co-schedules frequency domain resources of 30 Physical Resource Blocks (PRBs), eachThe number of PRBs includes 12 subcarriers, and the total number of scheduled subcarriers is 30×12=360, and at this time, the integer power value of 2 greater than or equal to 360 is 512, 1024 … …, and thus the number of points N _x 512, 1024 … … may be taken.

Similarly, when X is greater than 1, then the corresponding DFT point number N can be determined based on the number of data symbols within each user equipment group _x 。

The data symbol subjected to the DFT processing in step 32 may be user data after the layer mapping processing (see fig. 1) is completed.

Step 33, for N obtained by DFT processing in each user equipment group _x A data symbol mapped to a corresponding Resource Element (RE); wherein the data symbols of the X user equipment groups are co-mapped toOn the REs.

After the processing in step 32, the embodiment of the present invention may obtain N obtained by DFT processing in each ue group _x The data symbols, together areAnd the DFT processed data symbols. Then, after data processing is performed on the data symbols, the data symbols are mapped to corresponding REs. Here, the data processing may specifically include precoding processing and other processing. Thus, the data symbols of the X groups of user equipments are co-mapped to +.>On the REs.

As another implementation of the embodiment of the present invention, the embodiment of the present invention may not be applied to the above before RE mapping is performedThe DFT-processed data symbols are subjected to any data processing, but are directly RE-mapped, which is not particularly limited in the embodiment of the present invention.

Step 34, performing N on the mapped data symbol _IDFT Performing Inverse Discrete Fourier Transform (IDFT) processing on the points; the N is _IDFT ＝2^n _IDFT ，n _IDFT Is a positive integer, and N _IDFT Greater than or equal to

In step 34, the embodiment of the present invention performs N on the data symbol mapped by the RE in step 33 _IDFT IDFT processing of the points to obtain N after IDFT processing _IDFT Data symbols, then, the N _IDFT The data symbols are transmitted. Here, N _IDFT Greater than or equal toWherein, at N _IDFT Is greater than->In the IDFT processing, the RE-mapped +.>Data symbol extension to N _IDFT And then, performing the IDFT processing.

Here, the number of points N of the IDFT processing _IDFT The first parameter may specifically be determined by a first parameter, where the first parameter includes at least a channel bandwidth and a subcarrier spacing at the base station side. For example, the number of subcarriers, N, can be calculated from the channel bandwidth and subcarrier spacing at the base station side _IDFT Is an integer power value of 2 greater than or equal to the number of subcarriers. In addition, N _IDFT And is also greater than or equal toIn addition, the base station may also send configuration information to the terminal when the terminal initially accesses the base station or switches to the base station, so as to indicate the N _IDFT Is a value of (a).

In addition, at Obtaining N after IDFT processing _IDFT After the data symbols, the embodiment of the invention transmits the N _IDFT When data symbols are received, serial-parallel conversion, cyclic redundancy (CP) addition and other processes can be performed, so that a time domain signal is obtained and transmitted. In addition, the order of the parallel-to-serial conversion and the CP adding process may be set as required, for example, the parallel-to-serial conversion may be performed after the CP adding process, or the parallel-to-serial conversion may be performed before the CP adding process.

Through the steps, the user equipment is grouped at the base station side, DFT processing can be respectively carried out on the data symbols of each user equipment group, and then IDFT processing is carried out on the data symbols after DFT processing of all the user equipment groups. In addition, when the number of the user equipment groups is 1, the embodiment of the invention can realize the single carrier characteristic waveform of the transmitting end, reduce the PAPR of the transmitting end and improve the downlink coverage, and in addition, the calculation complexity and the processing time delay of the receiving of the user equipment can be reduced.

Fig. 4 shows an example of transmitting-side data processing in an embodiment of the present invention, which divides a plurality of user equipments into 2 user equipment groups, namely, user equipment group #0 and user equipment group #1. And respectively performing DFT processing on the data symbols of each user equipment group in a transform domain coding module, performing IDFT processing on the data symbols of all the user equipment groups in an OFDM signal generating module, thereby obtaining an OFDM time domain signal, and transmitting the OFDM time domain signal through a corresponding antenna port. The OFDM signal generating module can also perform processing such as parallel/serial conversion and CP adding of the data symbols, and RE mapping processing can also be performed on the data symbols obtained after DFT processing before the OFDM signal generating module.

In the present application, considering that the number of terminals (frequency domain resource size) scheduled by the base station is generally variable, the value of the parameters such as the number of points in the DFT processing in the step 32 may need to be adaptively adjusted according to the current scheduling situation, so in the method of the present application, the base station may further send one or more first signaling to each user equipment, where the first signaling is used to indicate at least one of the following information:

1) And whether the number X of the user equipment groups is larger than 1 or not, namely, whether the number X of the user equipment groups after the base station side grouping is larger than 1 or not.

2) Point N for DFT processing of user equipment group where the user equipment is located _x 。

3) And the user equipment and the frequency domain resource position corresponding to the user equipment group where the user equipment is located.

Specifically, the first signaling may be sent through a UE-group common (UE-group) downlink control information to which the one or more UEs belong, or may be sent through downlink control information for scheduling downlink data transmission of each UE.

In accordance with at least one embodiment of the present application, when the first signaling is used to indicate whether the number of user equipment groups is greater than 1, the first signaling may be common downlink control information for the user groups or Downlink Control Information (DCI) for scheduling the user equipment transmissions. At this time, the first signaling may indicate whether the number of the ue groups is greater than 1 through different preset values of the first bit, for example, the first bit with a length of 1 bit has a value of 0 indicating that the number of the ue groups is 1, and a value of 0 indicates that the number of the ue groups is greater than 1.

According to at least one embodiment of the present invention, the point N used for instructing the user equipment group where the user equipment is located to perform DFT processing in the first signaling _x And when the value is taken, the first signaling is the public downlink control information of the user group or DCI for scheduling the user equipment to transmit. At this time, the first signaling may indicate the N through a preset second bit field _x Or indicate the value of N _x Index information in a preconfigured set of values, or indicating the N _x And N _IDFT Or indicate N _x /N _IDFT Index information in a preconfigured set of ratios.

In particular, the specific indication form of the second bit field may be selected from a plurality of:

1) The second bit field may directly indicate N _x At this time, the second bit field contains the N _x For example, in N _x 512, the second bit field indicates directly 512.

2) The second bit field may indicate the N _x And the base station sends configuration information to the terminal in advance to configure the numerical value set. For example, the base station is preconfigured with a value set {256, 512, 1024, 2048}, where the number of bits in the second bit field may be 2, and the values are 00,01,10,11, respectively, which are in one-to-one correspondence with the values in the value set. Thus, if the value of the second bit field is "01", the number M of points representing DFT operation performed on the base station side is 512.

3) The second bit field may indicate the N _x And N _IDFT In which the second bit field directly comprises N _x /N _IDFT Is a value of (a). For example, the base station is preconfigured with N _IDFT 2048 if the second bit field indicates N _x /N _IDFT The value of (2) is 0.25, N can be calculated _x The value of (2) is 512.

4) The second bit field indicates N _x /N _IDFT And the base station sends configuration information to the terminal in advance to configure the ratio set. For example, the base station is preconfigured with a value set {0.25,0.5,1}, where the number of bits in the second bit field may be 2, and the values 00,01,10 respectively correspond to the values in the value set one by one. Thus, if the value of the second bit field is "00", N is represented _x /N _IDFT The value of (2) is 0.25, N can be calculated _x The value of (2) is 512.

In the above modes 2 and 4, the number of bits in the second bit field depends on the number P of elements in the corresponding set (such as the number set or the ratio set), and specifically, the minimum number of bits may be

According to at least one embodiment of the present invention, when the first signaling indicates the ue and the frequency domain resource location corresponding to the ue group where the ue is located, there may be multiple indication manners:

1) The first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier BandWidth or corresponding partial BandWidth (BWP) ₁ And a frequency domain resource allocation length L, and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ 。

As shown in fig. 5, the hatched box represents the frequency domain resource of a certain User Equipment (UE), the length of which is L, the box corresponding to DFT represents the frequency domain resource of the user equipment group where the user equipment is located, and the box corresponding to carrier bandwidth represents the frequency domain resource of carrier bandwidth. In the 1 st indication scheme, the base station indicates L, S to the user ₁ And S is ₂ In this way, the ue can determine the start and stop positions of the ue frequency domain resources in the carrier bandwidth and the start position S of the frequency domain resource allocation of the ue group with the start and stop positions S according to the above parameters ₂ Is set in the above-described range (a).

2) The first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding BWP ₁ And a frequency domain resource allocation length L and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ Offset values between them.

Similarly, as shown in fig. 6, the hatched box represents the frequency domain resource of a certain User Equipment (UE), the length of which is L, the box corresponding to DFT represents the frequency domain resource of the user equipment group where the user equipment is located, and the box corresponding to carrier bandwidth represents the frequency domain resource of carrier bandwidth. The frequency domain resource of the user equipment and the starting position S of the frequency domain resource allocation of the user equipment group where the user equipment is located ₂ The offset value is offset ₁ . In the 2 nd indication scheme, the base station indicates L, S to the user ₁ And offset ₁ In this way, the ue may determine, according to the above parameters, the start and stop positions of the frequency domain resources of the ue in the carrier bandwidth and the offset from the start position of the frequency domain resource allocation of the ue group where the ue is located.

3) The first signaling indicates a starting position S of a frequency domain resource of a user equipment group where the user equipment is located in the whole carrier bandwidth or corresponding BWP ₂ And the frequency domain resource allocation length L of the user equipment and the starting position S of the frequency domain resource allocation of the user equipment ₁ Offset values between them.

Similarly, as shown in fig. 7, the hatched box represents the frequency domain resource of a certain User Equipment (UE), the length of which is L, the box corresponding to DFT represents the frequency domain resource of the user equipment group where the user equipment is located, and the box corresponding to carrier bandwidth represents the frequency domain resource of carrier bandwidth. The frequency domain resource of the user equipment and the starting position S of the frequency domain resource allocation of the user equipment group where the user equipment is located ₂ The offset value is offset ₁ . In the 3 rd indication scheme, the base station indicates L, S to the user ₂ And offset ₁ In this way, the ue can determine the start and stop positions of the ue frequency domain resources in the carrier bandwidth and the start position S of the frequency domain resource allocation of the ue group with the start and stop positions S according to the above parameters ₂ Is set in the above-described range (a).

Through the above steps, the present application provides for indicating the N to the user equipment by the base station _x The realization means of the value of (2) enables the terminal to determine the DFT point number of the transmitting end. In addition, the specific position of the frequency domain resource of the user equipment is indicated to the user equipment, so that the terminal can receive and process the data.

The method of the embodiment of the application is introduced from the network side, and is further described from the user equipment side.

Referring to fig. 8, a data receiving and processing method provided by an embodiment of the present application is applied to a ue side, and includes:

step 81, receiving the signaling, and determining the number X of the user equipment groups according to the signaling.

Here, the ue receives the signaling sent by the base station, and according to the signaling, the ue may determine the number X of the ue groups divided by the base station during DFT processing on the data symbols including the data symbols of the ue. According to the number X of different ue groups, the embodiment of the present application has different receiving processing manners, specifically, step 82 is entered when the number X of ue groups is 1, and step 83 is entered when the number X of ue groups is greater than 1.

Step 82, when the number X of the user equipment groups is 1, determining a first starting position and a first time domain length of the user equipment in the complete time domain data signal according to the resource allocation information; intercepting a first data signal segment from the received complete time domain data signal according to the determined first starting position and first time domain length; and carrying out data processing on the first data signal segment to acquire data information sent to the user equipment by the base station.

Here, the resource allocation information may be information such as a frequency domain resource location corresponding to the ue indicated by the first signaling and the ue group where the ue is located.

When the user equipment group is 1, the user equipment can intercept a first data signal segment containing the data symbol of the user equipment from the complete time domain data signal, and then receive the first data signal segment, and at the moment, the user equipment only needs to process part of signal segments of the complete time domain signal, so that the number of points of IDFT processing can be reduced, and the complexity of receiving processing and the time delay of receiving power consumption/receiving processing of the user equipment are greatly reduced.

Fig. 9 provides one example of determining a first data signal segment. Two user equipments, UE1 and UE2, are illustrated in fig. 9 as examples. As can be seen from analysis of DFT and IDFT processing formulas, when the number of DFT points is N _x And N _IDFT When the number N of points is 2 power but not the same, the sender data shows the form of 'no aliasing, sequential arrangement and interpolation' after DFT and IDFTFor example, in fig. 9, segment 1 is the segment where the sampling point corresponding to UE1 is located, segment 2 is the segment where the sampling point of UE2 is located, and may be regarded as an equal interval expansion of the transmitting end data by a factor of Q, where q=n _IDFT /N _x . Taking fig. 9 as an example, q=n _IDFT /N _x =2, the transmission end data of the original UE1 and UE2 are equally spaced and expanded by 2 times, namely every other sampling point is the data point of the original transmission end, and interpolation generated by expansion operation is arranged between every two transmission end data points.

In this way, the terminal side knows its frequency domain resource allocation position and size, e.g. starting from point m in the DFT operation ₁ The length is k points, so that the time domain signal segment containing the downlink data starts from the sampling point m in the complete time domain signal ₁ * Q, in the time domain segment with the length of k times Q sampling points, extracting one sampling point from each interval Q-1 sampling points in the time domain segment, and extracting k sampling points in total, so as to obtain the sampling point corresponding to the downlink data of the terminal.

According to at least one embodiment of the present invention, in the above method, when the number X of the user equipment groups is greater than 1, data processing is performed on all received time domain data to obtain data information sent by the base station to the user equipment.

Here, when the number of the ue groups is greater than 1, the receiving processing manner in the prior art may be referred to, and the receiving processing may be performed on the received complete time domain signal, so as to obtain data sent by the base station to the ue.

Through the mode, the embodiment of the invention realizes the receiving processing of the data based on the number of different packets at the base station side. When the number of the user equipment groups is 1, the embodiment of the invention can reduce the computational complexity and the processing time delay of the user equipment side.

In the above step 81, the ue receives signaling, specifically, the ue receiving base station may send one or more first signaling, where the first signaling is used to indicate at least one of the following information:

whether the number of the user equipment groups is more than 1;

for the user equipmentPoint N for DFT processing of user equipment group _x ；

In step 82, the ue performs the receiving process on the first data signal segment, so that the complexity of the receiving process can be greatly reduced.

According to at least one embodiment of the present invention, when the first signaling is used to indicate whether the number of the ue groups is greater than 1, the first signaling is downlink control information common to the ue groups or downlink control information DCI for scheduling the ue transmissions. At this time, the first signaling may indicate whether the number of the ue groups is greater than 1 through different preset values of the first bit.

According to at least one embodiment of the present invention, when the first signaling indicates the ue and the frequency domain resource location corresponding to the ue group where the ue is located, the following different forms may be specifically adopted:

1) The first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding BWP ₁ The frequency domain resource allocation length L and the starting position S2 of the frequency domain resource allocation of the user equipment group where the user equipment is located;

2) The first signaling indicates the start of the frequency domain resource of the user equipment in the whole carrier bandwidth or corresponding BWP Position S ₁ A frequency domain resource allocation length L and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ Offset values between;

3) The first signaling indicates a starting position S of a frequency domain resource of a user equipment group where the user equipment is located in the whole carrier bandwidth or corresponding BWP ₂ A frequency domain resource allocation length L of the user equipment and a starting position S of the frequency domain resource allocation of the user equipment ₁ Offset values between them.

The foregoing describes various methods of embodiments of the present invention. An apparatus for carrying out the above method is further provided below.

The embodiment of the invention provides a base station 100 shown in fig. 10, which comprises:

a grouping determination module 101 for determining X user equipment groups, wherein the xth user equipment group includes Y _x Each user equipment, X is a positive integer, x=1, …, X; y is Y _x Is a positive integer;

a first transformation module 102 for Y in each user equipment group _x M corresponding to each user equipment _x Data symbols are respectively subjected to zero padding operation and are expanded to N _x Data symbols, and N _x Performing point Discrete Fourier Transform (DFT) processing; the N is _x ＝2^n _x ,n _x Is a positive integer, and N _x Greater than or equal to M _x ；

A mapping module 103, configured to perform DFT processing on N obtained from each user equipment group _x The data symbols are mapped to the corresponding resource units RE; wherein the data symbols of the X user equipment groups are co-mapped toOn the resource elements RE;

a second transformation module 104, configured to perform N on the mapped data symbols _IDFT Performing Inverse Discrete Fourier Transform (IDFT) processing on the points; the N is _IDFT ＝2^n _IDFT ，n _IDFT Is a positive integer, and N _IDFT Greater than or equal to

Optionally, the number of points N of the inverse fourier transform IDFT process _IDFT And determining through a first parameter, wherein the first parameter comprises a channel bandwidth and a subcarrier spacing at the base station side.

Optionally, the base station further comprises the following modules (not shown in the figure):

a signaling sending module, configured to send one or more first signaling to each user equipment, where the first signaling is used to indicate at least one of the following information:

whether the number of the user equipment groups is larger than 1;

Optionally, when the first signaling is used for indicating whether the number of the user equipment groups is greater than 1, the first signaling is user group public downlink control information or downlink control information DCI for scheduling the user equipment transmissions; and the first signaling indicates whether the number of the user equipment groups is larger than 1 or not through different values of the preset first bit.

Optionally, the point N used for indicating the user equipment group where the user equipment is located to perform DFT processing in the first signaling _x When the value is taken, the first signaling is user group public downlink control information or DCI for scheduling the user equipment transmission; the first signaling indicates the N through a preset second bit field _x Or indicate the value of N _x Index information in a preconfigured set of values, or indicating the N _x And N _IDFT Or indicate N _x /N _IDFT Index information in a preconfigured set of ratios.

Optionally, when the first signaling indicates the user equipment and the frequency domain resource position corresponding to the user equipment group where the user equipment is located:

Or alternatively, the first and second heat exchangers may be,

or alternatively, the first and second heat exchangers may be,

Referring to fig. 11, an embodiment of the present invention provides a schematic structure of a base station 1100, which includes: processor 1101, transceiver 1102, memory 1103 and bus interface, wherein:

in an embodiment of the present invention, the base station 1100 further includes: a program stored on the memory 1103 and executable on the processor 1101, which when executed by the processor 1101, performs the steps of:

For each pairN obtained by DFT processing in individual user equipment group _x The data symbols are mapped to the corresponding resource units RE; wherein the data symbols of the X user equipment groups are co-mapped toOn the resource elements RE;

It can be appreciated that in the embodiment of the present invention, when the computer program is executed by the processor 1101, the processes of the embodiment of the data transmission processing method shown in fig. 3 can be implemented, and the same technical effects can be achieved, so that the repetition is avoided, and the description is omitted here.

In fig. 11, a bus architecture may comprise any number of interconnecting buses and bridges, with various circuits of the one or more processors, as represented by the processor 1101, and the memory, as represented by the memory 1103, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1102 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 may store data used by the processor 1101 in performing the operations.

In some embodiments of the present invention, there is also provided a computer-readable storage medium having stored thereon a program which, when executed by a processor, performs the steps of:

determining X user equipment groups, wherein the xth userThe device group includes Y _x Each user equipment, X is a positive integer, x=1, …, X; y is Y _x Is a positive integer;

When the program is executed by the processor, all the implementation modes in the data transmission processing method applied to the base station side can be realized, the same technical effects can be achieved, and in order to avoid repetition, the description is omitted here.

Referring to fig. 12, an embodiment of the present invention provides a user equipment 120, including:

a signaling receiving module 121, configured to receive signaling, and determine the number X of user equipment groups according to the signaling;

a first receiving and processing module 122, configured to determine, according to the resource allocation information, a first starting position and a first time domain length of the user equipment in the complete time domain data signal when the number X of the user equipment groups is 1; intercepting a first data signal segment from the received complete time domain data signal according to the determined first starting position and first time domain length; performing data processing on the first data signal segment to acquire data information sent to the user equipment by the base station;

optionally, the above user equipment further includes the following modules (not shown in the figure):

and the second receiving and processing module is used for carrying out data processing on all received time domain data when the number X of the user equipment groups is greater than 1 so as to acquire data information sent to the user equipment by the base station.

Optionally, the signaling receiving module 121 is further configured to receive one or more first signaling sent by the base station, where the first signaling is used to indicate at least one of the following information:

Whether the number of the user equipment groups is more than 1;

The first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding BWP ₁ The frequency domain resource allocation length L and the starting position S2 of the frequency domain resource allocation of the user equipment group where the user equipment is located;

or alternatively, the first and second heat exchangers may be,

the first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding BWP ₁ A frequency domain resource allocation length L and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ Offset values between;

or alternatively, the first and second heat exchangers may be,

the first signaling indicates a starting position S of a frequency domain resource of a user equipment group where the user equipment is located in the whole carrier bandwidth or corresponding BWP ₂ A frequency domain resource allocation length L of the user equipment and a starting position S of the frequency domain resource allocation of the user equipment ₁ Offset values between them.

Referring to fig. 13, a schematic structural diagram of an upper terminal according to an embodiment of the present invention is provided, and the terminal 1300 includes: processor 1301, transceiver 1302, memory 1303, user interface 1304, and bus interface.

In an embodiment of the present invention, the upper terminal 1300 further includes: a program stored on the memory 1303 and executable on the processor 1301.

The processor 1301 when executing the program performs the following steps:

determining the number X of the user equipment groups according to the signaling; the method comprises the steps of,

It can be appreciated that in the embodiment of the present invention, when the computer program is executed by the processor 1301, the processes of the embodiment of the data receiving and processing method shown in fig. 8 can be implemented, and the same technical effects can be achieved, so that repetition is avoided, and detailed description is omitted here.

In fig. 13, a bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented by processor 1301, and various circuits of memory, represented by memory 1303, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1302 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 1304 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1303 may store data used by the processor 1301 in performing operations.

When the program is executed by the processor, all the implementation modes in the data receiving and processing method applied to the terminal side can be realized, the same technical effects can be achieved, and in order to avoid repetition, the description is omitted here.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present application.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A data transmission processing method applied to a base station, comprising:

for Y in each user equipment group _x M corresponding to each user equipment _x Data symbols are respectively subjected to zero padding operation and are expanded to N _x Data symbols, and N _x Performing point Discrete Fourier Transform (DFT) processing; the saidn _x Is a positive integer, and N _x Greater than or equal to M _x ；

N obtained by DFT processing in each user equipment group _x The data symbols are mapped to the corresponding resource units RE; wherein the data symbols of the X user equipment groups are co-mapped toOn each RE;

n is carried out on the mapped data symbols _IDFT Performing Inverse Discrete Fourier Transform (IDFT) processing on the points; the saidn _IDFT Is a positive integer, and N _IDFT Greater than or equal to->

The base station sends one or more first signaling to each user equipment, wherein the information used for indicating the first signaling comprises: point N for DFT processing of user equipment group where the user equipment is located _x The method comprises the steps of carrying out a first treatment on the surface of the Or the frequency domain resource position corresponding to the user equipment group where the user equipment is located;

Point N for indicating user equipment group where user equipment is located to perform DFT processing in the first signaling _x When the value is taken, the first signaling is user group public downlink control information or DCI for scheduling the user equipment transmission;

when the first signaling indicates the frequency domain resource position corresponding to the user equipment group where the user equipment is located, the first signaling indicates that:

Or alternatively, the first and second heat exchangers may be,

or alternatively, the first and second heat exchangers may be,

2. The method of claim 1, wherein the inverse discrete fourier transform, IDFT, process is performed on a number of points, N _IDFT And determining through a first parameter, wherein the first parameter comprises a channel bandwidth and a subcarrier spacing at the base station side.

3. The method as recited in claim 1, further comprising: the first signaling is also used to indicate the following information: and whether the number X of the user equipment groups is larger than 1.

4. The method of claim 3, wherein,

when the first signaling is used for indicating whether the number of the user equipment groups is greater than 1, the first signaling is user group public downlink control information or downlink control information DCI for scheduling the user equipment transmission;

5. A data receiving and processing method applied to a user equipment, comprising:

when the number X of the user equipment groups is 1, determining a first starting position and a first time domain length of the user equipment in the complete time domain data signal according to the resource allocation information; intercepting a first data signal segment from the received complete time domain data signal according to the determined first starting position and first time domain length; performing data processing on the first data signal segment to acquire data information sent to the user equipment by the base station;

the step of receiving signaling includes:

the user equipment receives one or more first signaling sent by the base station, wherein the information used for indicating the first signaling comprises: point N for DFT processing of user equipment group where the user equipment is located _x The method comprises the steps of carrying out a first treatment on the surface of the x is the x-th user equipment group; or the frequency domain resource position corresponding to the user equipment group where the user equipment is located;

The first signaling indicates the N through a preset second bit field _x Or indicate the value of N _x Index information in a preconfigured set of values, or indicating the N _x And N _IDFT Or indicate N _x /N _IDFT Index information in a preconfigured set of ratios; wherein the N is _IDFT The number of points for performing Inverse Discrete Fourier Transform (IDFT) on the mapped data symbols; the saidn _IDFT Is a positive integer, and N _IDFT Greater than or equal to->

the first signaling indicates the starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding partial bandwidth BWP ₁ And a frequency domain resource allocation length L, and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ ；

Or alternatively, the first and second heat exchangers may be,

the first signaling indicates a starting position S of the frequency domain resource of the user equipment in the whole carrier bandwidth or the corresponding partial bandwidth BWP ₁ And a frequency domain resource allocation length L and a starting position S of frequency domain resource allocation of a user equipment group where the user equipment is located ₂ Offset values between;

or alternatively, the first and second heat exchangers may be,

The first signaling indicates a starting position S of a frequency domain resource of a user equipment group where the user equipment is located in the whole carrier bandwidth or a corresponding partial bandwidth BWP ₂ And the frequency domain resource allocation length L of the user equipment and the starting position S of the frequency domain resource allocation of the user equipment ₁ Offset values between them.

6. The method of claim 5, wherein,

and when the number X of the user equipment groups is greater than 1, carrying out data processing on all received time domain data so as to acquire data information sent to the user equipment by the base station.

7. The method of claim 5 or 6, wherein the first signaling is further used to indicate the following information: whether the number of the user equipment groups is greater than 1.

8. The method of claim 7, wherein,

9. A base station, comprising:

a first transformation module for Y in each user equipment group _x M corresponding to each user equipment _x Data symbols are respectively subjected to zero padding operation and are expanded to N _x Data symbols, and N _x Performing point Discrete Fourier Transform (DFT) processing; the saidn _x Is a positive integer, and N _x Greater than or equal to M _x ；

a second transformation module, configured to perform N on the mapped data symbol _IDFT Performing Inverse Discrete Fourier Transform (IDFT) processing on the points; the saidn _IDFT Is a positive integer which is used for the preparation of the high-voltage power supply,and N is _IDFT Greater than or equal to->

A signaling sending module, configured to send one or more first signaling to each user equipment, where the information used for indicating the first signaling includes: point N for DFT processing of user equipment group where the user equipment is located _x The method comprises the steps of carrying out a first treatment on the surface of the Or the frequency domain resource position corresponding to the user equipment group where the user equipment is located;

Or alternatively, the first and second heat exchangers may be,

or alternatively, the first and second heat exchangers may be,

the first signaling indication stationStarting position S of frequency domain resource of user equipment group where the user equipment is located in whole carrier bandwidth or corresponding BWP ₂ And the frequency domain resource allocation length L of the user equipment and the starting position S of the frequency domain resource allocation of the user equipment ₁ Offset values between them.

10. A base station comprising a transceiver and a processor, wherein,

n is carried out on the mapped data symbols _IDFT Performing Inverse Discrete Fourier Transform (IDFT) processing on the points; the said n _IDFT Is a positive integer, and N _IDFT Greater than or equal to->

To each ofThe user equipment sends one or more first signaling, wherein the information used for indicating the first signaling comprises: point N for DFT processing of user equipment group where the user equipment is located _x The method comprises the steps of carrying out a first treatment on the surface of the Or the frequency domain resource position corresponding to the user equipment group where the user equipment is located;

Or alternatively, the first and second heat exchangers may be,

or alternatively, the first and second heat exchangers may be,

11. A base station, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to any one of claims 1 to 4.

12. A user device, comprising:

The first receiving and processing module is used for determining a first starting position and a first time domain length of the user equipment in the complete time domain data signal according to the resource allocation information when the number X of the user equipment groups is 1; intercepting a first data signal segment from the received complete time domain data signal according to the determined first starting position and first time domain length; performing data processing on the first data signal segment to acquire data information sent to the user equipment by the base station;

the signaling receiving module is further configured to receive one or more first signaling sent by the base station, where the information used for indicating the first signaling includes: point N for DFT processing of user equipment group where the user equipment is located _x The method comprises the steps of carrying out a first treatment on the surface of the x is the x-th user equipment group; or the frequency domain resource position corresponding to the user equipment group where the user equipment is located;

the first signaling indicates the N through a preset second bit field _x Or indicate the value of N _x Index information in a preconfigured set of values, or indicating the N _x And N _IDFT Or indicate N _x /N _IDFT At a preconfigured ratioIndex information in the value set; wherein the N is _IDFT The number of points for performing Inverse Discrete Fourier Transform (IDFT) on the mapped data symbols; the saidn _IDFT Is a positive integer, and N _IDFT Greater than or equal to->

Or alternatively, the first and second heat exchangers may be,

or alternatively, the first and second heat exchangers may be,

13. A user device comprising a transceiver and a processor, wherein,

the transceiver is used for receiving signaling;

the receiving signaling includes:

the first signaling indicates the N through a preset second bit field _x Or indicate the value of N _x Index information in a preconfigured set of values, or indicating the N _x And N _IDFT Or indicate N _x /N _IDFT Index information in a preconfigured set of ratios; wherein the N is _{IDFT is a pair of} The number of points of the Inverse Discrete Fourier Transform (IDFT) processing of the mapped data symbols; the saidn _IDFT Is a positive integer, and N _IDFT Greater than or equal to->

Or alternatively, the first and second heat exchangers may be,

or alternatively, the first and second heat exchangers may be,

14. A user device, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to any one of claims 5 to 8.

15. A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, implements the steps of the method according to any one of claims 1 to 8.