CN115189992B

CN115189992B - Data processing method, device, network equipment and terminal equipment

Info

Publication number: CN115189992B
Application number: CN202110368524.6A
Authority: CN
Inventors: 王俊伟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-06
Publication date: 2024-05-10
Anticipated expiration: 2041-04-06
Also published as: CN115189992A

Abstract

In the data processing method, the device, the network equipment and the terminal equipment provided by the application, the data processing method comprises the following steps: determining the length of a second cyclic prefix of data to be transmitted according to the length of a first cyclic prefix corresponding to the subcarrier interval and the length of an Orthogonal Frequency Division Multiplexing (OFDM) symbol; generating target data according to the length of the second cyclic prefix and the data to be transmitted; and sending the target data to the terminal equipment. The cyclic prefix length of the data to be transmitted is increased through the OFDM symbols, so that the frame structure of a new air interface physical layer is not required to be modified, the single-frequency network technology can be applied to the new air interface with low cost, and the data transmission efficiency in the broadcast multicast mode is improved.

Description

Data processing method, device, network equipment and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data processing method, an apparatus, a network device, and a terminal device.

Background

With the continuous development of mobile terminals, there is an increasing demand for video streaming services applicable to mobile terminals. The video streaming service is characterized by a high data transmission rate, which requires that the mobile terminal can quickly receive the video stream issued by the network device. The broadcast multicast mode can receive the related video stream without the feedback information of the mobile terminal, so that the requirement of higher data transmission rate of the video stream media service can be met.

Further, since the single frequency network technology (single frequency network, SFN) can effectively improve the data transmission efficiency in the broadcast multicast mode, it is widely used in the broadcast multicast mode. But SFN technology requires long Cyclic Prefix (CP) support to overcome transmission multipath delays for different stations. However, the frame structure parameters of the New air interface (NR) currently do not support the frame structure of the long CP, and if the long CP is introduced, the frame structure of the physical layer needs to be modified, which is relatively complex and costly.

Disclosure of Invention

The application provides a data processing method, a device, network equipment and terminal equipment, which are used for solving the technical problems that when a long CP is introduced into a current new air interface, a frame structure of a physical layer needs to be modified, the process is complex and the cost is high.

In a first aspect, the present application provides a data processing method, applied to a network device, the data processing method including:

Determining the length of a second cyclic prefix of data to be transmitted according to the length of a first cyclic prefix corresponding to the subcarrier interval and the length of an Orthogonal Frequency Division Multiplexing (OFDM) symbol;

Generating target data according to the length of the second cyclic prefix and the data to be transmitted;

and sending the target data to the terminal equipment.

Optionally, determining the length of the second cyclic prefix of the data to be transmitted according to the length of the first cyclic prefix and the length of the OFDM symbol corresponding to the subcarrier interval includes: determining a preset number of OFDM symbols contained in the second cyclic prefix; and determining the length of a second cyclic prefix of the data to be transmitted according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol.

Optionally, determining the length of the second cyclic prefix of the data to be transmitted according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol includes: determining the total length of OFDM symbols contained in the second cyclic prefix as a first length according to the preset number and the length of the OFDM symbols; determining the total length of the first cyclic prefix contained in the second cyclic prefix as a second length according to the preset number and the length of the first cyclic prefix; the sum of the first length and the second length is determined as the length of the second cyclic prefix.

Optionally, generating the target data according to the length of the second cyclic prefix and the data to be transmitted includes: determining first data corresponding to the second cyclic prefix according to the length of the second cyclic prefix and data to be transmitted; and generating target data according to the first data and the data to be transmitted, wherein the target data comprises the first data and the data to be transmitted.

Optionally, sending the target data to the terminal device includes: and transmitting a plurality of groups of PDSCH scheduling symbols to the terminal equipment, wherein each group of PDSCH scheduling symbols is used for transmitting one target data, each group of PDSCH scheduling symbols comprises a data symbol and a cyclic prefix symbol, the data symbol is used for transmitting data to be transmitted, and the cyclic prefix symbol is used for transmitting first data.

Optionally, the data processing method further includes: and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the number of cyclic prefix symbols in each group of PDSCH scheduling symbols.

Optionally, the configuration information is sent to the terminal device by at least one of the following messages:

Broadcast messages, radio resource control messages, control messages for the medium access control layer, and physical layer scheduling signaling indication messages.

Transmitting a time domain scheduling signaling to the terminal equipment, wherein the time domain scheduling signaling is used for indicating a starting symbol of a cyclic prefix symbol in a plurality of groups of PDSCH scheduling symbols and the number of symbols for transmitting target data;

or the scheduling signaling is used to indicate the start symbol of the data symbol and the symbol number of the data symbol in the multiple sets of PDSCH scheduling symbols.

Optionally, the data processing method further includes: and sending the multipath length parameter of the network equipment to the terminal equipment, wherein the multipath length parameter is used for indicating the terminal equipment to acquire the data to be transmitted according to the multipath length parameter.

In a second aspect, the present application provides a data processing method applied to a terminal device, where the terminal device is in coverage of a plurality of network devices, the data processing method includes:

Receiving target data sent by a plurality of network devices;

acquiring data to be transmitted from the received target data;

the target data sent by the plurality of network devices are the same, the target data is generated by the network devices based on the length of a second cyclic prefix and data to be transmitted, and the length of the second cyclic prefix is determined by the network devices according to the length of a first cyclic prefix corresponding to the subcarrier interval and the length of an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

Optionally, each target data includes first data corresponding to the to-be-transmitted data and the second cyclic prefix, where the first data is determined according to the length of the second cyclic prefix and the to-be-transmitted data, and receiving the target data sent by the multiple network devices, where the method includes:

Each network device is received to send a plurality of groups of PDSCH scheduling symbols, each group of PDSCH scheduling symbols is used for transmitting one target data, each group of PDSCH scheduling symbols comprises a data symbol and a cyclic prefix symbol, the data symbol is used for transmitting data to be transmitted, and the cyclic prefix symbol is used for transmitting first data.

Optionally, obtaining data to be transmitted from target data sent by a plurality of network devices includes: acquiring configuration information sent by network equipment; determining the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information; and acquiring data to be transmitted from the received target data according to the number of the cyclic prefix symbols.

Optionally, according to the number of cyclic prefix symbols, obtaining data to be transmitted from the received target data includes: acquiring a time domain scheduling signaling sent by network equipment; determining the number of initial symbols and data symbols in a plurality of groups of PDSCH scheduling symbols according to time domain scheduling signaling, wherein the initial symbols are initial symbols in cyclic prefix symbols or initial symbols in the data symbols; determining data symbols for transmitting data to be transmitted according to the number of cyclic prefix symbols, the initial symbols and the number of symbols; and acquiring the data to be transmitted corresponding to the data symbol from the data symbol used for transmitting the data to be transmitted.

Optionally, acquiring data to be transmitted from the received target data includes:

Acquiring first data to be transmitted from data symbols corresponding to a plurality of network devices according to a first starting position of the first data to be transmitted in the target data and the length of the OFDM symbols; acquiring second data to be transmitted from second cyclic prefixes corresponding to the plurality of network devices according to a multipath length parameter, wherein the multipath length parameter is used for indicating data transmission delays of different network devices; and determining the data to be transmitted according to the first data to be transmitted and the second data to be transmitted.

Optionally, according to the multipath length parameter, obtaining the second data to be transmitted from the second cyclic prefixes corresponding to the plurality of network devices includes: determining a second starting position of second data to be transmitted in a second cyclic prefix corresponding to each network device according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol and the first starting position; and acquiring second data to be transmitted corresponding to the plurality of network devices according to the second starting position and the length of the OFDM symbols.

In a third aspect, the present application provides a data processing apparatus for use in a network device, the data processing apparatus comprising:

a determining module, configured to determine a length of a second cyclic prefix of data to be transmitted according to a length of a first cyclic prefix corresponding to the subcarrier interval and a length of an orthogonal frequency division multiplexing OFDM symbol;

the processing module is used for generating target data according to the length of the second cyclic prefix and the data to be transmitted;

And the sending module is used for sending the target data to the terminal equipment.

Optionally, the determining module is specifically configured to: determining a preset number of OFDM symbols contained in the second cyclic prefix; and determining the length of a second cyclic prefix of the data to be transmitted according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol.

Optionally, the determining module is specifically configured to: determining the total length of OFDM symbols contained in the second cyclic prefix as a first length according to the preset number and the length of the OFDM symbols; determining the total length of the first cyclic prefix contained in the second cyclic prefix as a second length according to the preset number and the length of the first cyclic prefix; the sum of the first length and the second length is determined as the length of the second cyclic prefix.

Optionally, the processing module is specifically configured to: determining first data corresponding to the second cyclic prefix according to the length of the second cyclic prefix and data to be transmitted; and generating target data according to the first data and the data to be transmitted, wherein the target data comprises the first data and the data to be transmitted.

Optionally, the sending module is specifically configured to: and transmitting a plurality of groups of PDSCH scheduling symbols to the terminal equipment, wherein each group of PDSCH scheduling symbols is used for transmitting one target data, each group of PDSCH scheduling symbols comprises a data symbol and a cyclic prefix symbol, the data symbol is used for transmitting data to be transmitted, and the cyclic prefix symbol is used for transmitting first data.

Optionally, the sending module is further configured to: and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the number of cyclic prefix symbols in each group of PDSCH scheduling symbols.

Optionally, the configuration information is sent to the terminal device by at least one of the following messages: broadcast messages, radio resource control messages, control messages for the medium access control layer, and physical layer scheduling signaling indication messages.

Optionally, the sending module is further configured to: transmitting a time domain scheduling signaling to the terminal equipment, wherein the time domain scheduling signaling is used for indicating a starting symbol of a cyclic prefix symbol in a plurality of groups of PDSCH scheduling symbols and the number of symbols for transmitting target data; or the scheduling signaling is used to indicate the start symbol of the data symbol and the symbol number of the data symbol in the multiple sets of PDSCH scheduling symbols.

Optionally, the sending module is further configured to: and sending the multipath length parameter of the network equipment to the terminal equipment, wherein the multipath length parameter is used for indicating the terminal equipment to acquire the data to be transmitted according to the multipath length parameter.

In a fourth aspect, the present application provides a data processing apparatus applied to a terminal device, the terminal device being within coverage of a plurality of network devices, the data processing apparatus comprising:

the receiving module is used for receiving target data sent by a plurality of network devices;

The acquisition module is used for acquiring data to be transmitted from the received target data;

Optionally, the acquiring module is specifically configured to: acquiring configuration information sent by network equipment; determining the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information; and acquiring data to be transmitted from the received target data according to the number of the cyclic prefix symbols.

Optionally, the acquiring module is specifically configured to: acquiring a time domain scheduling signaling sent by network equipment; determining the number of initial symbols and data symbols in a plurality of groups of PDSCH scheduling symbols according to time domain scheduling signaling, wherein the initial symbols are initial symbols in cyclic prefix symbols or initial symbols in the data symbols; determining data symbols for transmitting data to be transmitted according to the number of cyclic prefix symbols, the initial symbols and the number of symbols; and acquiring the data to be transmitted corresponding to the data symbol from the data symbol used for transmitting the data to be transmitted.

Optionally, the acquiring module is specifically configured to: acquiring first data to be transmitted from data symbols corresponding to a plurality of network devices according to a first starting position of the first data to be transmitted in the target data and the length of the OFDM symbols; acquiring second data to be transmitted from second cyclic prefixes corresponding to the plurality of network devices according to a multipath length parameter, wherein the multipath length parameter is used for indicating data transmission delays of different network devices; and determining the data to be transmitted according to the first data to be transmitted and the second data to be transmitted.

Optionally, the acquiring module is specifically configured to: determining a second starting position of second data to be transmitted in a second cyclic prefix corresponding to each network device according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol and the first starting position; and acquiring second data to be transmitted corresponding to the plurality of network devices according to the second starting position and the length of the OFDM symbols.

In a fifth aspect, the present application provides a network device, the network device comprising: a memory for storing a computer program;

a transceiver for transceiving data under the control of the processor;

A processor for reading the computer program in the memory and performing the following operations:

and sending the target data to the terminal equipment.

Optionally, the processor is further configured to perform the following operations:

And sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the number of cyclic prefix symbols in each group of PDSCH scheduling symbols.

Optionally, the processor sends the configuration information to the terminal device by at least one of: broadcast messages, radio resource control messages, control messages for the medium access control layer, and physical layer scheduling signaling indication messages.

Optionally, the processor is further configured to perform the following operations: transmitting a time domain scheduling signaling to the terminal equipment, wherein the time domain scheduling signaling is used for indicating a starting symbol of a cyclic prefix symbol in a plurality of groups of PDSCH scheduling symbols and the number of symbols for transmitting target data; or the scheduling signaling is used to indicate the start symbol of the data symbol and the symbol number of the data symbol in the multiple sets of PDSCH scheduling symbols.

Optionally, the processor is further configured to perform the following operations: and sending the multipath length parameter of the network equipment to the terminal equipment, wherein the multipath length parameter is used for indicating the terminal equipment to acquire the data to be transmitted according to the multipath length parameter.

In a sixth aspect, the present application provides a terminal device, where the terminal device is within coverage of a plurality of network devices, the terminal device including:

A memory for storing a computer program;

a transceiver for transceiving data under the control of the processor;

Receiving target data sent by a plurality of network devices;

acquiring data to be transmitted from the received target data;

Optionally, each target data includes first data corresponding to the to-be-transmitted data and the second cyclic prefix, where the first data is determined according to the length of the second cyclic prefix and the to-be-transmitted data, and receiving the target data sent by the multiple network devices, where the method includes: for each network device, the receiving network device sends multiple sets of PDSCH scheduling symbols, each set of PDSCH scheduling symbols being used for transmitting one target data, each set of PDSCH scheduling symbols including a data symbol for transmitting the data to be transmitted and a cyclic prefix symbol for transmitting the first data.

Optionally, acquiring data to be transmitted from the received target data includes: acquiring configuration information sent by network equipment; determining the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information; and acquiring data to be transmitted from the received target data according to the number of the cyclic prefix symbols.

Optionally, acquiring data to be transmitted from the received target data includes: acquiring first data to be transmitted from data symbols corresponding to a plurality of network devices according to a first starting position of the first data to be transmitted in the target data and the length of the OFDM symbols; acquiring second data to be transmitted from second cyclic prefixes corresponding to the plurality of network devices according to a multipath length parameter, wherein the multipath length parameter is used for indicating data transmission delays of different network devices; and acquiring the data to be transmitted according to the first data to be transmitted and the second data to be transmitted.

Optionally, according to the multipath length parameter, acquiring the second data to be transmitted from the second cyclic prefix includes: determining a second starting position of second data to be transmitted in a second cyclic prefix corresponding to each network device according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol and the first starting position; and acquiring second data to be transmitted corresponding to the plurality of network devices according to the second starting position and the length of the OFDM symbols.

In a seventh aspect, the present application provides a processor-readable storage medium storing a computer program for causing a processor to execute the data processing method as provided in the first or second aspect.

In an eighth aspect, the present application provides a computer program product comprising: a computer program implementing a data processing method as provided in the first or second aspect above when the computer program is executed by a processor.

In a ninth aspect, the present application provides a communication system comprising a network device as claimed in any one of the preceding claims and a terminal device as claimed in any one of the preceding claims.

In the data processing method, the device, the network equipment and the terminal equipment provided by the application, the length of a second cyclic prefix of data to be transmitted is determined according to the length of a first cyclic prefix corresponding to a subcarrier interval and the length of an Orthogonal Frequency Division Multiplexing (OFDM) symbol; generating target data according to the length of the second cyclic prefix and the data to be transmitted; and sending the target data to the terminal equipment. The length of the cyclic prefix of the data to be transmitted is increased by Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frame structure of a new air interface physical layer is not required to be modified, so that the single-frequency network technology can be applied to the new air interface with low cost, and the data transmission efficiency in a broadcast multicast mode is improved.

It should be understood that the description of the application above is not intended to limit key or critical features of embodiments of the application, nor to limit the scope of the application. Other features of the present application will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the application or the technical solutions of the prior art, the following description of the embodiments or the drawings used in the description of the prior art will be given in brief, it being obvious that the drawings in the description below are some embodiments of the application and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

Fig. 1 is a diagram illustrating a communication scenario of SFN technology according to an embodiment of the present application;

fig. 2 is a schematic diagram of an application scenario of a data processing procedure according to an embodiment of the present application;

Fig. 3 is a signaling interaction schematic diagram of a data processing method according to an embodiment of the present application;

FIG. 4 is a flowchart of a method for generating target data according to an embodiment of the present application;

Fig. 5 is a schematic diagram of determining a second cyclic prefix according to an embodiment of the present application;

FIG. 6 is a schematic diagram of generating target data according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of multiple sets of PDSCH scheduling symbols according to an embodiment of the present application;

fig. 8 is a schematic diagram of a terminal device according to an embodiment of the present application to obtain data to be transmitted;

fig. 9 is a signaling interaction schematic diagram of a data processing method according to another embodiment of the present application;

FIG. 10 is a flowchart of a data processing method according to another embodiment of the present application;

fig. 11 is a schematic diagram of a terminal device according to another embodiment of the present application to obtain data to be transmitted;

FIG. 12 is a schematic diagram of a data processing apparatus according to an embodiment of the present application;

FIG. 13 is a schematic diagram of a data processing apparatus according to another embodiment of the present application;

Fig. 14 is a schematic structural diagram of a network device according to an embodiment of the present application;

Fig. 15 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The term "and/or" in the present application describes an association relationship of association objects, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The term "plurality" in embodiments of the present application means two or more, and other adjectives are similar.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

With the continuous development of mobile terminals, people have increasingly demanded video streaming media services suitable for mobile terminals, such as services of high-definition televisions, AR/VR images, etc., in which the data rate of common MP4 is 200Kbps-800Kbps, the data rate of standard definition MP4 is 1Mbps-3Mbps, and the data rate of high definition MP4 is more than 10Mbps, so as to support video streaming media services with higher data transmission rate along with the increase of service demands, and meanwhile, the mobile terminals are required to rapidly receive video streams issued by network devices.

At present, the broadcast multicast mode can receive related video streams without mobile terminal feedback information, so that the requirement of higher data transmission rate of video streaming media service can be met, in the related technology, the single frequency network technology (single frequency network, SFN) can effectively improve the data transmission efficiency in the broadcast multicast mode, and in the broadcast multicast mode, for example, in the broadcast multicast service transmission in 4GLTE, the SFN technology is generally adopted to increase the signal power of cell edge terminal equipment, improve the utilization rate of cell edge spectrum and improve the satisfaction degree of users. For easy understanding, the following describes the application scenario of SFN technology in detail with reference to fig. 1:

Fig. 1 is a diagram illustrating a communication scenario of SFN technology according to an embodiment of the present application. As shown in fig. 1, examples of communication scenarios of 1 cell, 3 cells, 12 cells, and 27 cells are provided, and it should be understood that the number of cells is not particularly limited in practical applications. Wherein each cell comprises at least one network device for transmitting data to the terminal device. In order to improve the utilization rate of the cell edge spectrum, adjacent cells (network devices) can send the same broadcast data to the terminal devices, and correspondingly, the terminal devices can simultaneously receive the data sent by a plurality of cells, and the data received by the terminal devices can be overlapped due to different distances between each cell and the terminal devices, so that interference is generated. Through SFN technology, the terminal equipment can acquire the original data through a long Cyclic Prefix (CP) in the received data, so that transmission multipath time delays of different stations are overcome, interference is avoided, and data transmission quality is improved.

However, in the current New air interface (NR) technology, for example, in the 5G New air interface technology, the frame structure parameter does not support the frame structure of the long CP, that is, the SFN technology cannot be adopted to improve the data transmission efficiency in the broadcast multicast mode, and if the long CP is introduced, the frame structure of the physical layer needs to be modified, so the process is relatively complex and the cost is high.

In order to solve the above problems, embodiments of the present application provide a data processing method, apparatus, network device, and terminal device, which increase the length of a cyclic prefix of data to be transmitted by using an orthogonal frequency division multiplexing OFDM symbol, without modifying a frame structure of a new air interface physical layer, so that a single frequency network technology can be applied to a new air interface with low cost, and data transmission efficiency in a broadcast multicast mode is improved. The following describes the application scenario of the present application:

fig. 2 is an application scenario diagram of a data processing method according to an embodiment of the present application. As shown in fig. 2, the scenario includes: terminal device 101 and a plurality of network devices (network device 1, network device 2 …, network device n).

It should be noted that fig. 2 is schematic, and in practical application, other devices may be further included in the above scenario, for example, a wireless repeater device, a wireless backhaul device, etc., which are not shown in fig. 2, and the number of n and the number of terminal devices 101 are not specifically limited in the embodiment of the present application.

In practical applications, the terminal device 101 is within the coverage of the above-mentioned multiple network devices, each network device sends the same data to be transmitted to the terminal device, and when each network device sends the data to be transmitted to the terminal device 101, an extended Cyclic Prefix (CP) of the data to be transmitted is generated by using an OFDM symbol, and target data is generated by the extended CP and the data to be transmitted, and then the target data is sent to the terminal device 101.

Accordingly, the terminal device 101, after receiving the superimposed data of the target data transmitted by the plurality of network devices, acquires the data to be transmitted from the superimposed data according to the extended CP in each target data. In practical applications, the type of the data to be transmitted is not specifically limited, and the data to be transmitted may be data corresponding to services such as the high-definition television and the AR/VR image.

The terminal device 101 may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, and the network device may include an access network device and a core network device, and the access network device may be a radio access network device, for example.

The names of the terminals may also be different in different systems, for example in a 5G system, the terminals may be referred to as User Equipment (UE), the terminals may also be wireless terminals, wherein the wireless terminals may communicate with one or more Core Networks (CN) via a radio access Network (Radio Access Network, RAN), the wireless terminals may be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example portable, pocket, hand-held, computer-built-in or car-mounted mobile devices, which exchange voice and/or data with the radio access Network. Such as Personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal DIGITAL ASSISTANT, PDA) and the like. A wireless terminal may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal (remote terminal), access terminal (ACCESS TERMINAL), user terminal (user terminal), user agent (user agent), user device (user equipment), and embodiments of the present application are not limited in this respect.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, applicable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (GENERAL PACKET Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR) systems, and the like. Terminals and network devices are included in these various systems. Also included in the system are core network parts such as evolved packet system (Evloved PACKET SYSTEM, EPS), 5G system (5 GS), etc.

It should be noted that, the method and the apparatus provided by the embodiments of the present application are based on the same application conception, and because the principles of solving the problems by the method and the apparatus are similar, the implementation of the apparatus and the method may be referred to each other, and the repetition is not repeated.

Fig. 3 is a signaling interaction schematic diagram of a data processing method according to an embodiment of the present application.

As shown in fig. 3, the data processing method includes the steps of:

S301, the network equipment determines the length of a second cyclic prefix of data to be transmitted according to the length of a first cyclic prefix corresponding to the subcarrier interval and the length of an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

In current NR technology, the subcarrier spacing (Subcarrier spacing, SCS) supported by the data channel and the control channel generally comprises the following: 15KHz, 30KHz, 60KHz, 120KHz, the length of the first cyclic prefix corresponding to the SCS and the length of the OFDM symbol are shown in the following table:

as for the scheme of determining the length of the second cyclic prefix of data to be transmitted, it is shown in the subsequent embodiments.

S302, the network equipment generates target data according to the length of the second cyclic prefix and the data to be transmitted.

For ease of understanding, the two steps described above are described below in connection with fig. 4. Fig. 4 is a flowchart of a method for generating target data according to an embodiment of the present application. As shown in fig. 4, the step S301 specifically includes the following steps:

s3011, determining a preset number of OFDM symbols contained in the second cyclic prefix.

The preset number of OFDM symbols is the number of OFDM symbols for increasing the cyclic prefix length of the data to be transmitted. It should be noted that, for the preset number of values, the embodiment of the present application is not limited in particular, and for example, the preset number of values may be set according to the spacing between the cells (network devices). Specifically, if the cell spacing is smaller, the length of the required second cyclic prefix is smaller, i.e. the preset number of OFDM symbols is smaller. In practical applications, the preset value may be determined by a protocol, or a broadcast message/RRC message/MAC layer control message/physical layer scheduling signaling indication may be given to the terminal.

S3012, determining the length of a second cyclic prefix of the data to be transmitted according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol.

Specifically, the length of the first cyclic prefix and the length of the OFDM symbol corresponding to the current subcarrier interval are determined according to the corresponding relationship between the subcarrier interval and the length of the first cyclic prefix and the length of the OFDM symbol.

Illustratively, taking the current SCS as an example of 15kHz, the corresponding first cyclic prefix length is 4.69us, and the corresponding OFDM symbol length is 66.67us.

Further, the length of the second cyclic prefix is obtained according to the preset number of OFDM symbols for increasing the length of the cyclic prefix and the length of the first cyclic prefix.

In practical applications, the length of the second cyclic prefix may be obtained by the following steps:

(1) Determining the total length of OFDM symbols contained in the second cyclic prefix as a first length according to the preset number and the length of the OFDM symbols;

specifically, the first length may be determined according to the following equation 1:

L ₁＝m×L_OFDM equation 1

Wherein L ₁ is the total length of the OFDM symbols included in the second cyclic prefix (first length), m is a preset number, and L _OFDM is the OFDM symbol length.

(2) Determining the total length of the first cyclic prefix contained in the second cyclic prefix as a second length according to the preset number and the length of the first cyclic prefix;

specifically, the second length may be determined according to the following equation 2:

l ₂＝ (m+1) ×L_CP1 equation 2

Wherein L ₂ is the total length (second length) of the first cyclic prefix contained in the second cyclic prefix, m is a preset number, and L _CP1 is the length of the first cyclic prefix corresponding to the current SCS.

(3) The sum of the first length and the second length is determined as the length of the second cyclic prefix.

In connection with the above, the length of the second cyclic prefix may be determined according to the following equation 3:

L _CP2＝ (m+1) ×L_CP1+m×L_OFDM equation 3

For example, taking the current SCS as 15KHz as an example, the length of the corresponding first cyclic prefix is 4.69us, the length of the OFDM symbol is 66.67us, if 1 OFDM symbol is used as extension (i.e. the value of the preset number m is 1), the first length is 66.67us, and the second length is 9.38us, the length of the corresponding second cyclic prefix can be 76.05us; if 2 OFDM symbols are used as the extension (i.e. the value of the preset number m is 2), the first length is 133.34us, and the second length is 14.07us, and the corresponding second cyclic prefix length can be 147.4us.

In practical applications, one target data is generally sent to a terminal device through a set of consecutive PDSCH scheduling symbols, where each set of PDSCH scheduling symbols includes a data symbol for transmitting data to be transmitted and a cyclic prefix symbol for transmitting data corresponding to the cyclic prefix, and for convenience of understanding, the following description will be given with reference to a specific example of the second cyclic prefix generation process:

fig. 5 is a schematic diagram of determining a second cyclic prefix according to an embodiment of the present application. Fig. 5 (a) is a schematic diagram of data scheduling when the OFDM symbol is not used to increase the length of the cyclic prefix, and as shown in fig. 5 (a), the set of PDSCH scheduling symbols includes two scheduling symbols, which are respectively: OS-1 and OS-2, symbols OS-1 and OS-2 are used to transmit data 1 to be transmitted and data 2 to be transmitted, respectively.

Fig. 5 (b) is a schematic diagram of data scheduling when 1 OFDM symbol is used to increase the length of the cyclic prefix, as shown in fig. 5 (b), when 1 OFDM symbol is used to increase the length of the cyclic prefix, symbol OS-1 is used to transmit data corresponding to the second cyclic prefix of data 1 to be transmitted, and OS-2 is used to transmit data 1 to be transmitted.

With continued reference to fig. 4, as shown in fig. 4, the step S302 may specifically include the following steps:

s3021, determining first data corresponding to the second cyclic prefix according to the length of the second cyclic prefix and the data to be transmitted.

In this step, the data to be transmitted is first processed accordingly to obtain the data to be processed. Specifically, taking the data to be transmitted as frequency domain data (for example, 4096-point complex sequence), and performing inverse Fourier transform processing on the frequency domain data to obtain the data to be transmitted.

For example, taking the frequency domain data as a _k(k＝0,1,…FFT_size -1) as an example, the data to be processed obtained by the inverse fourier transform process is s _k(k＝0,1,…FFT_size -1), and the processing procedure refers to the scheme in the prior art, and will not be repeated here.

For convenience of understanding, the embodiment of the present application uses output to be processed) as an example, where the data is sample data with a sequence length of 8 (i.e. to be transmitted data s _0-7 = {1,2,3,4,5,6,7,8} but not limited thereto.

In practical application, the sequence length corresponding to each OFDM symbol is the same as the sequence length corresponding to the data to be transmitted, that is, in this embodiment, the sequence length corresponding to each OFDM symbol is also 8 sample data.

Further, a sequence length corresponding to the second cyclic prefix is determined according to the sequence length corresponding to the first cyclic prefix and a sequence length corresponding to the OFDM symbol for increasing the length of the cyclic prefix.

For ease of understanding, please refer to fig. 6, fig. 6 is a schematic diagram illustrating a method for generating target data according to an embodiment of the present application. As shown in fig. 6, when the length of the cyclic prefix is increased by taking one OFDM symbol length as an example (i.e., the sequence length corresponding to the OFDM symbol is 8 sample data), and the length of the first cyclic prefix is 2 sample data, it is possible to determine that the length of the second cyclic prefix is 12 sample data according to the above formula 3.

Further, according to the length of the second cyclic prefix, the value of each sample point data in the second cyclic prefix is determined, so that the first data corresponding to the second cyclic prefix is obtained.

Specifically, in combination with the above embodiment, the second cyclic prefix length of the data to be transmitted is the sum of the first length and the second length, and in this step, the value of the sample point data corresponding to the first length and the value of the sample point data corresponding to the second length are determined according to the data to be transmitted, respectively, so that the first data corresponding to the second cyclic prefix can be determined.

For example, please continue to refer to fig. 6, the sample data corresponding to the data to be transmitted is adopted as the sample data corresponding to the first length, i.e. the sample data corresponding to the first length is (1, 2,3,4,5,6,7, 8); adopting the last sample point data in the sample point data corresponding to the data to be transmitted as the sample point data corresponding to the second length, namely, the sample point data corresponding to the first length is (5, 6,7, 8);

further, the first data may be obtained according to the sample data corresponding to the second length and the sample data corresponding to the first length, that is, the sample data corresponding to the first data is (5,6,7,8,1,2,3,4,5,6,7,8).

And S3022, generating target data according to the first data and the data to be transmitted.

In this step, the target data as shown in fig. 6 is obtained by combining the sample data corresponding to the first data and the sample data corresponding to the data to be transmitted.

It should be noted that, in fig. 6, the method and principle of increasing the length of the cyclic prefix by one OFDM symbol are illustrated, and in practical application, other number of OFDM symbols are similar, and are not described herein.

In some embodiments, the target data may also be determined according to the following formula:

Wherein, Is the starting position of the 1ms subframe,For target data, m is the preset number of OFDM symbols for increasing the length of the cyclic prefix, L is the symbol number in the slot, k is a constant 64, μ is the configured SCS index, μ ₀ is the index of the reference SCS configured by the protocol, where Nu is equivalent to L _OFDM in the above formula,Equivalent to L _CP2 in the above formula.

And S303, the network equipment sends the target data to the terminal equipment.

In practical applications, the embodiment of the present application is not limited in particular to a specific manner of sending the target data to the terminal device. For example, the plurality of target data may be transmitted by transmitting a plurality of sets of PDSCH scheduling symbols to the terminal device, wherein each set of PDSCH scheduling symbols is used for transmitting one target data, and each set of PDSCH scheduling symbols includes a data symbol and a cyclic prefix symbol, the data symbol is used for transmitting data to be transmitted, and the cyclic prefix symbol is used for transmitting the first data.

For easy understanding, please refer to fig. 7, fig. 7 is a schematic diagram of a structure of multiple sets of PDSCH scheduling symbols according to an embodiment of the present application. As shown in fig. 7, taking an example that one slot contains 14 symbols and one OFDM symbol is used to increase the cyclic prefix length, the slot includes 7 sets of PDSCH scheduling symbols, which are respectively: (0, 1), (2, 3), (4, 5), (6, 7), (8, 9), (10, 11), (12, 13). Taking (0, 1) as an example, symbol 1 is a data symbol, and is used for transmitting data to be transmitted in target data, symbol 0 is a cyclic prefix symbol, and is used for transmitting first data corresponding to a second cyclic prefix of the data to be transmitted.

It should be noted that, in the foregoing process, the corresponding data processing scheme when one network device sends the target data is similar to the foregoing scheme when other network devices send the target data, which is not repeated herein.

S304, the terminal equipment receives target data sent by a plurality of network equipment.

S305, acquiring data to be transmitted from the received target data.

In practical application, in the broadcast multicast mode, a plurality of network devices send target data to the terminal device at the same time, and because the distances between the network devices and the terminal device are different, the terminal device only receives the data of the data symbol part in each group of PDSCH scheduling symbols to obtain the data to be processed in the data symbol. For convenience of understanding, the manner in which the terminal device obtains the data to be processed is described below with reference to fig. 8:

Fig. 8 is a schematic diagram of a terminal device according to an embodiment of the present application to obtain data to be transmitted. It should be noted that, fig. 8 illustrates two network devices with different distances from the terminal device (a first network device and a second network device in the drawing), and the distance between the first network device and the terminal device is smaller than the distance between the second network device and the terminal device, and the multipath signal of the first network device is 5 time periods earlier than the multipath signal of the second network device (that is, after the same terminal device receives 5 sample data of the target data sent by the first network device, the target data sent by the second network device is received).

In this embodiment, the data sent by the first network device is mainly used, for example, if the symbol start boundary in the target data sent by the first network device and received by the terminal device at the current moment is sample data 8, the terminal device acquires 8 sample data including the sample data, that is, sample data shown in fig. 8 (8,1,2,3,4,5,6,7); and simultaneously acquiring 8 sample data corresponding to the second network device, namely the sample data shown in fig. 8 (3,4,5,6,7,8,1,2).

Because the multipath signal of the second network device is the cyclic data of the multipath signal of the first network device, the terminal device receives the two signals and then combines the two signals to obtain the data to be processed corresponding to the target data, so that the energy is enhanced.

According to the data processing method provided by the application, network equipment determines the length of a second cyclic prefix of data to be transmitted according to the length of a first cyclic prefix corresponding to a subcarrier interval and the length of an Orthogonal Frequency Division Multiplexing (OFDM) symbol; generating target data according to the length of the second cyclic prefix and the data to be transmitted; and sending the target data to the terminal equipment, and acquiring the data to be transmitted from the target data sent by the plurality of network equipment by the terminal equipment. The length of the cyclic prefix of the data to be transmitted is increased by Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frame structure of a new air interface physical layer is not required to be modified, so that the single-frequency network technology is applied to the new air interface, the data transmission efficiency in a broadcast multicast mode is improved, in addition, the terminal equipment only receives the data symbols in each group of PDSCH scheduling symbols to obtain the data to be processed in the data symbols, the interference problem of ultra-long multipath can be avoided, the data transmission quality is improved, and the user experience is improved.

Fig. 9 is a signaling interaction schematic diagram of a data processing method according to another embodiment of the present application. As shown in fig. 9, the data processing method provided in this embodiment may include the following steps:

s311, the network equipment determines the length of a second cyclic prefix of the data to be transmitted according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol.

And S312, the network equipment generates target data according to the length of the second cyclic prefix and the data to be transmitted.

S313, the network equipment sends a plurality of groups of PDSCH scheduling symbols to the terminal equipment.

Each group of PDSCH scheduling symbols is used for transmitting one target data, each group of PDSCH scheduling symbols comprises a data symbol and a cyclic prefix symbol, the data symbol is used for transmitting data to be transmitted, and the cyclic prefix symbol is used for transmitting first data.

It should be noted that, steps S311 to S313 are similar to steps S301 to S303 in the embodiment shown in fig. 3, and reference may be made to the above embodiment specifically, and the details are not repeated here.

And S314, the network equipment sends configuration information to the terminal equipment.

The configuration information is used for indicating the number of cyclic prefix symbols in each group of PDSCH scheduling symbols. It should be understood that the number of cyclic prefix symbols in each set of PDSCH scheduling symbols is a preset number of OFDM symbols included in the second cyclic prefix, i.e., m as described above.

In practical applications, the plurality of PDSCH scheduling symbols in one slot may not be all used for transmitting the target data, that is, some of the plurality of PDSCH scheduling symbols are unscheduled symbols, so that the network device needs to inform the terminal device of the number of PDSCH symbols used for transmitting the target data in the current slot, so that the terminal device receives the target data correctly.

In practical applications, the configuration information may be sent to the terminal device through at least one of the following messages: broadcast messages, radio resource control messages (Radio Resource Control, RRC), control messages of the medium access control layer (MAC layer), and physical layer scheduling signaling indication messages.

In some embodiments, there are various ways to send configuration information to the terminal device, and embodiments of the present application are not limited in detail. In an aspect, this may be implemented by a higher layer signaling configuration, such as indicating the number of cyclic prefix symbols in each set of PDSCH scheduling symbols when performing PDSCH parameter configuration.

Illustratively, if the parameters are configured to: sym_num_for_cp { sym_0, sym_1}, then indicates the indicating terminal device: the number of the cyclic prefix symbols in each group of PDSCH scheduling symbols is 0, or the number of the cyclic prefix symbols in each group of PDSCH scheduling symbols is 1; if the parameter "sym_for_cp" is configured, it indicates that the number of cyclic prefix symbols in each group of PDSCH scheduling symbols is 1, and if the parameter is not configured, it indicates that the number of cyclic prefix symbols in each group of PDSCH scheduling symbols is 0.

On the other hand, the method of DCI indication may also be used to send configuration information to the terminal device, for example, the configuration information may be sent to the terminal device by adding a bit indication in DCI or performing existing bit indication association, which is not described herein.

S315, the terminal equipment determines the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information.

S316, the network equipment sends time domain scheduling signaling to the terminal equipment.

The time domain scheduling signaling is used for indicating the initial symbol of the cyclic prefix symbol in the plurality of groups of PDSCH scheduling symbols and the number of symbols used for transmitting target data; or the scheduling signaling is used to indicate the start symbol of the data symbol and the symbol number of the data symbol in the multiple sets of PDSCH scheduling symbols.

In practical applications, the time domain scheduling signaling may be sent to the terminal device by means of downlink control information (downlink Control Information, DCI). Illustratively, the time domain scheduling signaling may include a start symbol S (dci_s for short) and a symbol number L (dci_l for short).

The starting symbol dci_s may be a starting symbol in a cyclic prefix symbol in a plurality of sets of PDSCH scheduling symbols, or may also be a starting symbol in a data symbol; the number of symbols dci_l may be the number of symbols used for transmitting the target data among the plurality of sets of PDSCH scheduling symbols, or may be the number of symbols of the data symbols among the plurality of sets of PDSCH scheduling symbols.

S317, the terminal equipment determines the number of the initial symbols and the data symbols in the plurality of groups of PDSCH scheduling symbols according to the time domain scheduling signaling.

Correspondingly, the starting symbol DCI_S and the symbol number DCI_L analyzed by the terminal equipment have the following two conditions:

(1) The starting symbol dci_s is a starting symbol in a cyclic prefix symbol, and the symbol number dci_l is the number of symbols used for transmitting target data;

(2) The start symbol dci_s is a start symbol in the data symbols, and the symbol number dci_l is the symbol number of the data symbols.

In practical applications, the execution order of steps S314 to S315 and steps S316 to S317 is not particularly limited. That is, S314 to S315 may be executed first, S316 to S317 may be executed second, or S316 to S317 may be executed first, and S314 to S315 may be executed second.

And S318, the terminal equipment determines data symbols used for transmitting data to be transmitted in a plurality of groups of PDSCH scheduling symbols according to the number of cyclic prefix symbols, the initial symbols and the number of symbols.

Accordingly, on the one hand, when the terminal device analysis result is the above case (1): then all cyclic prefix symbols in the multiple groups of PDSCH scheduling symbols scheduled at this time are determined according to the starting symbol DCI_S and the symbol number DCI_L, and then data symbols in the multiple groups of PDSCH scheduling symbols are determined according to the cyclic prefix symbols.

Specifically, taking the number of cyclic prefix symbols in each group of PDSCH scheduling symbols as 1 as an example, according to the starting symbol dci_s and the number of symbols dci_l, all cyclic prefix symbols in the multiple groups of PDSCH scheduling symbols of the current scheduling can be obtained as follows:

DCI_S，DCI_S+2，DCI_S+4，…，DCI_S+(DCI_L-2)

Further, according to the number of symbols dci_l of the scheduling target data, determining that all data symbols in the scheduled multiple sets of PDSCH scheduling symbols are:

DCI_S+1，DCI_S+3，…，DCI_S+(DCI_L-1)

For convenience of understanding, please refer to fig. 11, fig. 11 is a schematic diagram of a terminal device according to another embodiment of the present application to obtain data to be transmitted. As shown in fig. 11, taking an example that one slot contains 14 PDSCH symbols, when the terminal device parses the result is: when the starting symbol dci_s of the cyclic prefix symbol is 4 and the number of symbols dci_l for transmitting the target data is 8, it may be obtained that the symbols 4, 6, 8, 10 in the current scheduling are cyclic prefix symbols, and further, according to the cyclic prefix symbols, it may be obtained that the symbols 5, 7, 9, 11 in the current scheduling are data symbols.

On the other hand, when the terminal device analysis result is the above case (2): then, all data symbols in the multiple groups of PDSCH scheduling symbols scheduled at this time are determined according to the starting symbols DCI_S and the number of symbols DCI_L, and then cyclic prefix symbols in the multiple groups of PDSCH scheduling symbols are determined according to the data symbols.

Specifically, taking the number of cyclic prefix symbols in each group of PDSCH scheduling symbols as 1 as an example, according to the starting symbol dci_s and the number of symbols dci_l, all data symbols in the multiple groups of PDSCH scheduling symbols of the current scheduling can be obtained as follows: dci_s-1, dci_s+1, dci_s+3, …, dci_s+2 (dci_l-1) -1.

Further, according to the data symbols, it can be determined that all cyclic prefix symbols in the multiple groups of PDSCH scheduling symbols scheduled at this time are: dci_s, dci_s+2, …, dci_s+2 (dci_l-1).

For example, as shown in fig. 11, still taking 14 PDSCH scheduling symbols in one slot as an example, when the terminal device parses the result is: when the initial symbol dci_s of the data symbol is 5 and the number of symbols dci_l of the data symbol is 4, it may be obtained that the symbols 5, 7, 9, 11 in the current scheduling are data symbols, and further, according to the data symbols, it may be obtained that the symbols 4, 6, 8, 10 in the current scheduling are cyclic prefix symbols.

S319, the terminal equipment acquires the data to be transmitted corresponding to the data symbol from the data symbol used for transmitting the data to be transmitted.

It should be noted that, in the above steps, the process of determining the data symbol transmitted by a single network device from the multiple sets of PDSCH scheduling symbols transmitted by the network device, in practical application, in the broadcast multicast mode, multiple network devices simultaneously transmit target data to the terminal device (i.e., multiple network devices simultaneously transmit multiple sets of PDSCH scheduling symbols), and since the distances between the network devices and the terminal device are different, the data received by the terminal device at the same time is also different. In order to avoid the interference problem of ultra-long multipath, the terminal equipment only receives the data of the data symbol part in each group of PDSCH scheduling symbols, thereby obtaining the data to be processed in the data symbol.

In one implementation, the terminal device may obtain data to be transmitted in corresponding data symbols of a plurality of network devices according to the embodiment shown in fig. 8, and it should be understood that one or two network devices (a first network device and a second network device) are shown in fig. 8 by way of example, but not by way of limitation, and the following description will discuss this step in conjunction with fig. 8:

As shown in fig. 8, symbol 2 and symbol 3 are corresponding data symbols in the first network device and the second network device, respectively, and since the distances between the first network device and the second network device and the terminal device are different, the data received by the terminal device at the same time is also different. Still taking the above example as an illustration, in order to avoid the interference problem of ultra-long multipath, the terminal device only receives the data symbol in each group of PDSCH scheduling symbols, thereby obtaining the data to be processed in the data symbol.

As shown in fig. 8, in the target data of the first network device, symbol 1 is a cyclic prefix symbol, symbol 2 is a data symbol, and the data received by the terminal device is: the data in symbol 2 is the same length data in other network devices to which the data corresponds. Specifically, taking the initial boundary of the data received at the current moment as "sample data 8" in symbol 2 as an example, the data received by the terminal device is: data (8,1,2,3,4,5,6,7) in the data symbols transmitted by the first network device and data (3,4,5,6,7,8,1,2) in the data symbols transmitted by the second network device.

Further, the data to be transmitted (1, 2,3,4,5,6,7, 8) is obtained from the mixed data, and the scheme for obtaining the data to be transmitted from the mixed data may refer to the prior art, which is not described herein.

In addition, it should be noted that the above steps are shown in a scheme of acquiring data to be transmitted from a corresponding data symbol of two network devices, and a scheme of acquiring data to be transmitted from data symbols of other number of network devices is similar to the above scheme, and will not be repeated here.

By the method for acquiring data to be transmitted provided in this embodiment, the terminal device only receives the data of the data symbol portion in each group of PDSCH scheduling symbols, and the data to be transmitted can be acquired from the data symbols without modifying the terminal.

In practical applications, increasing the length of the cyclic prefix by the OFDM symbol may reduce the utilization rate of the PDSCH scheduling symbol (the original PDSCH scheduling symbol is used for transmitting data to be transmitted, and the scheme needs to use one or more symbols to schedule the first data corresponding to the cyclic prefix). In addition to the method for acquiring data to be transmitted in the above embodiment, the terminal device may acquire one or more data to be transmitted from the first data corresponding to the cyclic prefix in the target data according to the multipath length parameter, and then combine the acquired multiple data to be transmitted, thereby improving the receiving performance. A detailed description of this scheme is provided below in conjunction with fig. 10, where this embodiment assumes the use of 1 OFDM symbol as an extension of the CP:

Fig. 10 is a flowchart of a data processing method according to another embodiment of the present application. As shown in fig. 10, the step S305 may specifically include the following steps of:

S321, according to the first starting position of the first data to be transmitted in the target data and the length of the OFDM symbols, the first data to be transmitted is obtained from the data symbols corresponding to the plurality of network devices.

The first starting position is a position of starting sample data of the data symbol in the target data in the nearest network device, and in practical application, the position can be determined by searching a synchronization signal or other reference signals of a resident cell, wherein the nearest cell is the resident cell, and details are not repeated here.

For convenience of understanding, please continue to refer to fig. 11, as shown in fig. 11, two network devices with different distances from the terminal device are exemplified (a first network device and a second network device in the figure), wherein the first network device is the network device closest to the terminal device, symbol 1 is a cyclic prefix symbol in one target data sent by the first network device, symbol 2 is a data symbol in one target data sent by the first network device, and symbol 3 is a cyclic prefix symbol in one target data sent by the second network device;

In some embodiments, the terminal device may determine the start sample data (e.g. sample data 1 in fig. 11) of the data to be transmitted in symbol 2 by searching for the synchronization signal, i.e. the first start position of the data symbol is the 13 th sample data in the target data.

Further, from the first starting position, the sample point data of the length of one OFDM symbol is obtained backward from the target data sent by the plurality of network devices, so that first data to be transmitted in the data symbols corresponding to the plurality of network devices are obtained. I.e., sample data (1, 2, 3, 4, 5, 6, 7, 8) and (5, 6, 7, 8, 1, 2, 3, 4) as shown in fig. 11.

S322, acquiring the multipath length parameter of the network equipment.

The multipath length parameters are used for indicating the data transmission delays of different network devices, and in practical application, the multipath length parameters of all network devices in the same broadcast multicast mode are the same, so that in this step, one or more multipath length parameters of the network devices can be obtained, and also the multipath length parameters of all network devices can be obtained.

In addition, the embodiment of the present application is not limited in particular to the manner of acquiring the multipath length parameter, and on the one hand, the multipath length parameter may be sent to the terminal device by the network device, for example, indicated to the terminal by a system message, or indicated by RRC signaling configuration, MAC control signaling, or indicated by physical layer scheduling information; on the other hand, the terminal device may also determine the multipath length parameter of the network device according to the received synchronization signals/clock signals of the plurality of network devices and according to the synchronization signals/clock signals, and as for the determining method, the base station may configure the synchronization signal/clock measurement amount, and the terminal may measure and calculate the synchronization signal/clock measurement amount by itself, which will not be described herein.

S323, acquiring second data to be transmitted from second cyclic prefixes corresponding to the plurality of network devices according to the multipath length parameters.

Specifically, step S322 may include the following steps S3231 to S3232:

S3231, determining a second initial position of second data to be transmitted in a second cyclic prefix corresponding to each network device according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol and the first initial position.

Specifically, the second starting position of the corresponding data symbol in the other network device may be obtained according to the following formula:

OS2-start＝OS1_start-L_OFDM+L_CP1+L_CP2-multi_path

Wherein, the OS2-start is a second start position of the second data to be transmitted in other network devices except the first network device, the os1_start is a first start position, the l_ofdm is an OFDM symbol length, the l_cp1, l_cp2 are a first cyclic prefix length of the data symbol, and the multi_path is a multipath length parameter.

In practical applications, when the value of l_cp1+l_cp2-multi_path is greater than 0, it indicates that there are available signals without multipath interference, and the terminal device can use these signals without multipath interference for data reception and demodulation.

S3232, obtaining second data to be transmitted corresponding to the plurality of network devices according to the second starting position and the length of the OFDM symbols.

Specifically, for each network device, L _OFDM length is taken backward from the second start bit position corresponding to the network device, that is, the second data to be transmitted is the second data to be transmitted, please continue to refer to fig. 11, where the second data to be transmitted is the sample data (5, 6, 7, 8, 1, 2, 3, 4) in the diagram.

S324, determining the data to be transmitted according to the first data to be transmitted and the second data to be transmitted.

Specifically, the method comprises the following two cases:

1. When the value of L _CP1+L_CP2 -multi_path is equal to 0, the terminal device may receive a complete independent data symbol from the first data (in the long CP data), i.e. may obtain a complete second data to be transmitted, without using the sample data together with the second data to be transmitted, i.e. OS 2-start=os1_start-L _OFDM;

2. When the value of multi_path is greater than L _CP1+L_CP2 but less than L _CP1+L_CP2+L_OFDM, it indicates that the terminal device has (L _OFDM+L_CP1+L_CP2 -multi_path) multiple samples without multipath interference, and the data symbol of the network device needs to be shared with the data symbol of the nearest network device, where the number of shared samples is: the number of samples of the multi_path-L _CP1+L_CP2, i.e. the superimposed data, is multi_path-L _CP1+L_CP2, and only one part of the second data to be transmitted can be obtained at this time.

Further: when the initial phases of the second data to be transmitted and the first data to be transmitted are different, phase correction is needed. Namely, the phase rotation is required to be performed on the second data to be transmitted or the first data to be transmitted, wherein the phase rotation factor is as follows: e ^f(d)ωj, i.e. related to d, the amplitude pattern is a function of 1. d and (L _CP1+L_CP2 -multi_path).

For ease of understanding, please continue to refer to fig. 11, the multipath length parameter multi_path in fig. 11 is shown as 10us (corresponding to 5 samples in the figure), the first cycle length is 2 samples (i.e. L _CP1、L_CP2 is 2), and the length of the cyclic prefix is increased by one OFDM symbol (i.e. L _OFDM is 8), but this is not a limitation in practical application.

As shown in fig. 11, symbol 2 is a data symbol in one target data sent by the nearest network device (the first network device), and sample 1 in the figure is the start sample data of the data to be transmitted in symbol 2, that is, the first start position; symbol 3 is a cyclic prefix symbol in the target data sent by the second network device.

In this scheme, the value of multi_path is greater than L _CP1+L_CP2 but less than L _CP1+L_CP2+L_OFDM, then it can be derived according to the above formula:

OS 2-start=os1_start-7, i.e., the second start position is the 6 th sample data, corresponding to sample data 5 in symbol 3.

Further, the number of samples of the superimposed data, multi_path-L _CP1+L_CP2, is 1, i.e., only one of the symbol 2 and the symbol 3 is superimposed (i.e., sample data 4 in the figure).

Furthermore, the data to be transmitted in the target data can be determined according to the sample data 4.

In the embodiment of the application, the terminal equipment can receive and enhance according to the multipath length parameter of the actual deployment scene, thereby improving the utilization rate of the symbols.

On the network device side, an embodiment of the application provides a data processing device which is applied to the network device. Fig. 12 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present application.

As shown in fig. 12, the data processing apparatus 1200 includes:

A determining module 1201, configured to determine a length of a second cyclic prefix of data to be transmitted according to a length of a first cyclic prefix corresponding to the subcarrier interval and a length of an orthogonal frequency division multiplexing OFDM symbol;

a processing module 1202, configured to generate target data according to the length of the second cyclic prefix and data to be transmitted;

A sending module 1203 is configured to send the target data to the terminal device.

Optionally, the determining module 1201 is specifically configured to: determining a preset number of OFDM symbols contained in the second cyclic prefix; and determining the length of a second cyclic prefix of the data to be transmitted according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol.

Optionally, the determining module 1201 is specifically configured to: determining the total length of OFDM symbols contained in the second cyclic prefix as a first length according to the preset number and the length of the OFDM symbols; determining the total length of the first cyclic prefix contained in the second cyclic prefix as a second length according to the preset number and the length of the first cyclic prefix; the sum of the first length and the second length is determined as the length of the second cyclic prefix.

Optionally, the processing module 1202 is specifically configured to: determining first data corresponding to the second cyclic prefix according to the length of the second cyclic prefix and data to be transmitted; and generating target data according to the first data and the data to be transmitted, wherein the target data comprises the first data and the data to be transmitted.

Optionally, the sending module 1203 is specifically configured to: and transmitting a plurality of groups of PDSCH scheduling symbols to the terminal equipment, wherein each group of PDSCH scheduling symbols is used for transmitting one target data, each group of PDSCH scheduling symbols comprises a data symbol and a cyclic prefix symbol, the data symbol is used for transmitting data to be transmitted, and the cyclic prefix symbol is used for transmitting first data.

Optionally, the sending module 1203 is further configured to: and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the number of cyclic prefix symbols in each group of PDSCH scheduling symbols, and the number of the cyclic prefix symbols is the preset number of OFDM symbols contained in the second cyclic prefix.

Optionally, the sending module 1203 is further configured to: and sending time domain scheduling signaling to the terminal equipment, wherein the time domain scheduling signaling is used for indicating the initial symbol used for transmitting the target data and the number of symbols used for transmitting the target data in the plurality of groups of PDSCH scheduling symbols.

Optionally, the sending module 1203 is further configured to: and sending the multipath length parameter of the network equipment to the terminal equipment, wherein the multipath length parameter is used for indicating the terminal equipment to determine the data to be transmitted from the target data according to the multipath length parameter.

It should be noted that, the above device provided by the present application can correspondingly implement all the method steps implemented by the network device in the method embodiment, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in the present embodiment are omitted.

On the terminal device side, an embodiment of the present application provides a data processing apparatus, which is applied to a terminal device, where the terminal device is in coverage of a plurality of network devices. Fig. 13 is a schematic structural diagram of a data processing apparatus according to another embodiment of the present application. As shown in fig. 13, the data processing apparatus 1300 includes:

a receiving module 1301, configured to receive target data sent by a plurality of network devices;

an obtaining module 1302, configured to obtain data to be transmitted from the received target data;

Optionally, each target data includes first data corresponding to the to-be-transmitted data and the second cyclic prefix, where the first data is determined according to the length of the second cyclic prefix and the to-be-transmitted data, and the receiving module is specifically configured to: for each network device, the receiving network device sends multiple sets of PDSCH scheduling symbols, each set of PDSCH scheduling symbols being used for transmitting one target data, each set of PDSCH scheduling symbols including a data symbol for transmitting the data to be transmitted and a cyclic prefix symbol for transmitting the first data.

Optionally, the obtaining module 1302 is specifically configured to: acquiring configuration information sent by network equipment; determining the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information; and acquiring data to be transmitted from the received target data according to the number of the cyclic prefix symbols.

Optionally, the obtaining module 1302 is specifically configured to: acquiring first data to be transmitted from data symbols corresponding to a plurality of network devices according to a first starting position of the first data to be transmitted in the target data and the length of the OFDM symbols; acquiring second data to be transmitted from second cyclic prefixes corresponding to the plurality of network devices according to a multipath length parameter, wherein the multipath length parameter is used for indicating data transmission delays of different network devices; and determining the data to be transmitted according to the first data to be transmitted and the second data to be transmitted.

Optionally, the obtaining module 1302 is specifically configured to: according to the multipath length parameter, obtaining second data to be transmitted from second cyclic prefixes corresponding to the plurality of network devices, including: determining a second starting position of second data to be transmitted in a second cyclic prefix corresponding to each network device according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol and the first starting position; and acquiring second data to be transmitted corresponding to the plurality of network devices according to the second starting position and the length of the OFDM symbols.

It should be noted that, the above device provided by the present application can correspondingly implement all the method steps implemented by the terminal device in the method embodiment, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in the present embodiment are omitted.

Fig. 14 is a schematic structural diagram of a network device according to an embodiment of the present application. The terminal is a first terminal, as shown in fig. 14, and the network device 1400 includes:

A memory for storing a computer program;

a transceiver for transceiving data under the control of the processor;

Where in FIG. 14, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1402 and various circuits of memory represented by the memory 1403, are 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 1401 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, and the like. The processor 1402 is responsible for managing the bus architecture and general processing, and the memory 1403 may store data used by the processor 1402 in performing operations.

The processor 1402 is responsible for managing the bus architecture and general processing, and the memory 1403 may store data used by the processor 1402 in performing operations.

Alternatively, the processor 1402 may be a central processing unit (central processing unit, CPU), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), or complex Programmable logic device (Complex Programmable Logic Device, CPLD), which may also employ a multi-core architecture.

The processor 1402 executes any of the methods related to the first terminal provided by the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 1403. The processor and the memory may also be physically separate.

Specifically, the processor 1402 is configured to read a computer program in a memory and perform the following operations:

and sending the target data to the terminal equipment.

It should be noted that, the network device provided by the present application can implement all the method steps implemented by the network device in the method embodiment, and can achieve the same technical effects, and the same parts and beneficial effects as those of the method embodiment in the embodiment are not described in detail herein.

Fig. 15 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device is in coverage range of a plurality of network devices, and the terminal device comprises:

A memory for storing a computer program;

a transceiver for transceiving data under the control of the processor;

Wherein in fig. 15, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1502 and various circuits of memory represented by the memory 1503, 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 1501 may be a number of elements, i.e. including a transmitter and a receiver, providing a unit for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 1502 is responsible for managing the bus architecture and general processing, and the memory 1503 may store data used by the processor 1502 in performing the operations.

The processor 1502 may be CPU, ASIC, FPGA or a CPLD, and the processor may also employ a multi-core architecture.

The processor 1502 is configured to execute any one of the methods provided with the master positioning terminal according to the embodiment of the present application by calling a computer program stored in the memory 1503 according to the obtained executable instructions. The processor and the memory may also be physically separate.

In particular, the processor 1502 is configured to read a computer program in a memory and perform the following operations:

Receiving target data sent by a plurality of network devices;

acquiring data to be transmitted from the received target data;

acquiring first data to be transmitted from the data symbols according to a first starting position of the first data to be transmitted in the target data and the length of the OFDM symbols; acquiring second data to be transmitted from the second cyclic prefix according to a multipath length parameter, wherein the multipath length parameter is used for indicating data transmission delays of different network devices; and determining the data to be transmitted according to the first data to be transmitted and the second data to be transmitted.

Optionally, according to the multipath length parameter, acquiring the second data to be transmitted from the second cyclic prefix includes:

determining a second starting position of second data to be transmitted according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol and the first starting position;

and acquiring second data to be transmitted according to the second starting position and the length of the OFDM symbol.

It should be noted that, the terminal device provided by the present application can implement all the method steps implemented by the terminal device in the method embodiment, and can achieve the same technical effects, and the same parts and beneficial effects as those of the method embodiment in the embodiment are not described in detail herein.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments of the present application 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 integrated units may be implemented in hardware or in software functional units.

The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

On the network device side, the embodiment of the present application provides a processor readable storage medium, where the processor readable storage medium stores a computer program, where the computer program is configured to enable a processor to execute a method related to a network device provided by the embodiment of the present application, so that the processor can implement all the method steps implemented by the network device in the foregoing method embodiment, and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

On the terminal device side, the embodiment of the present application provides a processor readable storage medium, where the processor readable storage medium stores a computer program, where the computer program is configured to enable a processor to execute the method related to the terminal device provided by the embodiment of the present application, so that the processor can implement all the method steps implemented by the terminal device in the foregoing method embodiment, and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

Among other things, the processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, tapes, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile storage (NANDFLASH), solid State Disk (SSD)), etc.

On the network device side, an embodiment of the present application further provides a computer program product including instructions, where the computer program is stored in a storage medium, and when the at least one processor executes the computer program, the at least one processor may implement all the method steps implemented by the network device in the method embodiment, and the same technical effects can be achieved, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted herein.

On the terminal device side, an embodiment of the present application further provides a computer program product including instructions, where the computer program is stored in a storage medium, and at least one processor may read the computer program from the storage medium, where when the at least one processor executes the computer program, the at least one processor may implement all the method steps implemented by the terminal device in the method embodiment, and may achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment are omitted herein.

The embodiment of the application also provides a communication system which comprises the network equipment and the terminal equipment. The network device can execute all the method steps executed by the network device in the method embodiment and achieve the same technical effect, and the terminal device can execute all the method steps executed by the terminal device in the method embodiment and achieve the same technical effect. The same parts and advantageous effects as those of the method embodiment in this embodiment will not be described in detail herein.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to signaling interactive schematic and/or block diagrams of methods, apparatuses, and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the signaling diagram and/or block diagram, and combinations of flows and/or blocks in the signaling diagram and/or block diagram, may be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the signaling interaction diagram flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the signaling interaction diagram flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the signaling diagram flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A data processing method, applied to a network device, the data processing method comprising:

The target data is sent to terminal equipment;

The determining the length of the second cyclic prefix of the data to be transmitted according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the orthogonal frequency division multiplexing OFDM symbol includes: determining a preset number of OFDM symbols contained in the second cyclic prefix;

Determining the total length of the OFDM symbols contained in the second cyclic prefix as a first length according to the preset number and the length of the OFDM symbols;

determining the total length of the first cyclic prefix contained in the second cyclic prefix as a second length according to the preset number and the length of the first cyclic prefix;

determining a sum of the first length and the second length as a length of the second cyclic prefix.

2. The data processing method according to claim 1, wherein the generating target data according to the length of the second cyclic prefix and the data to be transmitted includes:

Determining first data corresponding to the second cyclic prefix according to the length of the second cyclic prefix and the data to be transmitted;

generating target data according to the first data and the data to be transmitted, wherein the target data comprises the first data and the data to be transmitted.

3. The data processing method according to claim 2, wherein the transmitting the target data to the terminal device includes:

and transmitting a plurality of groups of PDSCH scheduling symbols to the terminal equipment, wherein each group of PDSCH scheduling symbols is used for transmitting one target data, each group of PDSCH scheduling symbols comprises a data symbol and a cyclic prefix symbol, the data symbol is used for transmitting the data to be transmitted, and the cyclic prefix symbol is used for transmitting the first data.

4. A data processing method according to claim 3, characterized in that the data processing method further comprises:

and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the number of the cyclic prefix symbols in each group of PDSCH scheduling symbols.

5. The data processing method according to claim 4, wherein the configuration information is transmitted to the terminal device by at least one of:

6. A data processing method according to claim 3, characterized in that the data processing method further comprises:

transmitting a time domain scheduling signaling to the terminal equipment, wherein the time domain scheduling signaling is used for indicating a starting symbol of the cyclic prefix symbol in a plurality of groups of PDSCH scheduling symbols and the number of symbols used for transmitting the target data;

or the scheduling signaling is used for indicating the starting symbol of the data symbol and the symbol number of the data symbol in the plurality of groups of PDSCH scheduling symbols.

7. A data processing method according to claim 3, characterized in that the data processing method further comprises:

And sending the multipath length parameter of the network equipment to the terminal equipment, wherein the multipath length parameter is used for indicating the terminal equipment to acquire data to be transmitted according to the multipath length parameter.

8. A data processing method, applied to a terminal device, where the terminal device is within coverage of a plurality of network devices, the data processing method comprising:

Receiving target data sent by a plurality of network devices;

acquiring data to be transmitted from the received target data;

The target data sent by the network devices are the same, the target data is generated by the network devices based on the length of a second cyclic prefix and the data to be transmitted, the length of the second cyclic prefix is determined by the network devices according to the length of a first cyclic prefix corresponding to a subcarrier interval and the length of an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and the determining the length of the second cyclic prefix according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the Orthogonal Frequency Division Multiplexing (OFDM) symbol includes: determining a preset number of OFDM symbols contained in the second cyclic prefix; determining the total length of the OFDM symbols contained in the second cyclic prefix as a first length according to the preset number and the length of the OFDM symbols; determining the total length of the first cyclic prefix contained in the second cyclic prefix as a second length according to the preset number and the length of the first cyclic prefix; determining a sum of the first length and the second length as a length of the second cyclic prefix.

9. The data processing method according to claim 8, wherein each of the target data includes first data corresponding to the to-be-transmitted data and the second cyclic prefix, the first data being determined according to a length of the second cyclic prefix and the to-be-transmitted data, the receiving the target data sent by the plurality of network devices, including:

And receiving a plurality of groups of PDSCH scheduling symbols sent by each network device, wherein each group of PDSCH scheduling symbols is used for transmitting one target data, each group of PDSCH scheduling symbols comprises a data symbol and a cyclic prefix symbol, the data symbol is used for transmitting the data to be transmitted, and the cyclic prefix symbol is used for transmitting the first data.

10. The method for processing data according to claim 9, wherein the acquiring data to be transmitted from the received target data includes:

acquiring configuration information sent by the network equipment;

Determining the number of the cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information;

and acquiring data to be transmitted from the received target data according to the number of the cyclic prefix symbols.

11. The method for processing data according to claim 10, wherein the obtaining data to be transmitted from the received target data according to the number of cyclic prefix symbols includes:

Acquiring a time domain scheduling signaling sent by the network equipment;

Determining the initial symbols in a plurality of groups of PDSCH scheduling symbols and the number of symbols of the data symbols according to the time domain scheduling signaling, wherein the initial symbols are the initial symbols in the cyclic prefix symbols or the initial symbols in the data symbols;

Determining data symbols for transmitting data to be transmitted according to the number of the cyclic prefix symbols, the starting symbols and the number of the symbols;

And acquiring the data to be transmitted corresponding to the data symbol from the data symbol for transmitting the data to be transmitted.

12. The method for processing data according to claim 9, wherein the acquiring data to be transmitted from the received target data includes:

acquiring first data to be transmitted from a data symbol according to a first starting position of the first data to be transmitted in the target data and the length of the OFDM symbol;

Acquiring second data to be transmitted from the second cyclic prefix according to a multipath length parameter, wherein the multipath length parameter is used for indicating data transmission delays of different network devices;

And determining the data to be transmitted according to the first data to be transmitted and the second data to be transmitted.

13. The method of claim 12, wherein the obtaining the second data to be transmitted from the second cyclic prefix according to the multipath length parameter comprises:

Determining a second starting position of the second data to be transmitted according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol and the first starting position;

14. A data processing apparatus, characterized by being applied to a network device, comprising:

a sending module, configured to send the target data to a terminal device;

The determining module is specifically configured to determine a preset number of OFDM symbols included in the second cyclic prefix; determining the total length of the OFDM symbols contained in the second cyclic prefix as a first length according to the preset number and the length of the OFDM symbols; determining the total length of the first cyclic prefix contained in the second cyclic prefix as a second length according to the preset number and the length of the first cyclic prefix; determining a sum of the first length and the second length as a length of the second cyclic prefix.

15. A data processing apparatus for application to a terminal device, the terminal device being within coverage of a plurality of network devices, the data processing apparatus comprising:

16. A network device, the network device comprising:

A memory for storing a computer program;

a transceiver for transceiving data under the control of the processor;

The target data is sent to terminal equipment; the determining the length of the second cyclic prefix of the data to be transmitted according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the orthogonal frequency division multiplexing OFDM symbol includes:

determining a preset number of OFDM symbols contained in the second cyclic prefix;

17. The network device of claim 16, wherein the generating the target data based on the length of the second cyclic prefix and the data to be transmitted comprises:

18. The network device of claim 17, wherein the sending the target data to the terminal device comprises:

19. The network device of claim 18, wherein the processor is further configured to:

20. The network device of claim 19, wherein transmitting configuration information to the terminal device comprises:

Transmitting the configuration information to the terminal device by at least one of the following messages: broadcast messages, radio resource control messages, control messages for the medium access control layer, and physical layer scheduling signaling indication messages.

21. The network device of claim 18, wherein the processor is further configured to:

22. The network device of claim 18, wherein the processor is further configured to:

23. A terminal device within coverage of a plurality of network devices, the terminal device comprising:

A memory for storing a computer program;

a transceiver for transceiving data under the control of the processor;

the processor is configured to read the computer program in the memory and perform the following operations:

Receiving target data sent by a plurality of network devices;

acquiring data to be transmitted from the received target data;

24. The terminal device of claim 23, wherein each of the target data includes first data corresponding to the to-be-transmitted data and the second cyclic prefix, the first data being determined according to a length of the second cyclic prefix and the to-be-transmitted data, and the receiving the target data sent by the plurality of network devices includes:

25. The terminal device according to claim 24, wherein the acquiring data to be transmitted from the received target data includes:

acquiring configuration information sent by the network equipment;

26. The terminal device of claim 25, wherein the obtaining the data to be transmitted from the received target data according to the number of cyclic prefix symbols comprises:

Acquiring a time domain scheduling signaling sent by the network equipment;

27. The terminal device according to claim 24, wherein the acquiring data to be transmitted from the received target data includes:

28. The terminal device of claim 27, wherein the obtaining the second data to be transmitted from the second cyclic prefix according to the multipath length parameter comprises:

29. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to execute the data processing method according to any one of claims 1 to 7 or the data processing method according to any one of claims 8 to 13.