WO2022206376A1

WO2022206376A1 - Data processing method and apparatus, and network device and terminal device

Info

Publication number: WO2022206376A1
Application number: PCT/CN2022/081010
Authority: WO
Inventors: 王俊伟
Original assignee: 大唐移动通信设备有限公司
Priority date: 2021-04-02
Filing date: 2022-03-15
Publication date: 2022-10-06

Abstract

The present disclosure provides a data processing method and apparatus, and a network device and a terminal device. On a network device side, the data processing method comprises: according to the length of a first cyclic prefix corresponding to a sub-carrier spacing and the length of an orthogonal frequency division multiplexing (OFDM) symbol, determining the length of a second cyclic prefix of data to be transmitted; generating target data according to the length of the second cyclic prefix and the data to be transmitted; and sending the target data to a terminal device. Since the length of a cyclic prefix of data to be transmitted is increased by means of an OFDM symbol, the frame structure of a new radio physical layer does not need to be modified, such that single frequency network technology can be applied to new radio at a low cost, thereby improving the data transmission efficiency in a broadcast multicast mode.

Description

Data processing method, apparatus, network equipment and terminal equipment

The present disclosure claims the priority of the Chinese patent application with the application number 202110362420.4 and the application title "Data Processing Method, Apparatus, Network Equipment and Terminal Equipment" filed with the China Patent Office on April 2, 2021, and on April 2021 The priority of the Chinese patent application filed with the Chinese Patent Office on March 06, the application number is 202110368524.6, and the application name is "data processing method, device, network equipment and terminal equipment", the entire contents of these two patent applications are incorporated herein by reference Public.

technical field

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

Background technique

With the continuous development of mobile terminals, people have more and more demands for video streaming media services suitable for mobile terminals. The feature of video streaming media service is that it requires a high data transmission rate, which requires that the mobile terminal can quickly receive the video stream delivered by the network device. Among them, the broadcast multicast mode can receive the related video stream without the need of feedback information from the mobile terminal, so it can meet the higher data transmission rate requirement of the video streaming media service.

Further, because 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. However, the SFN technology needs the support of a long cyclic prefix (CP) to overcome the transmission multipath delay of different sites. However, the frame structure parameters of the current New Radio (NR) do not support the frame structure of the long CP. If the long CP is introduced, the frame structure of the physical layer needs to be modified, and the process is relatively complicated and the cost is high.

SUMMARY OF THE INVENTION

The present disclosure provides a data processing method, device, network device and terminal device, which are used to solve the technical problems of complex process and high cost when the frame structure of the physical layer needs to be modified when the current new air interface introduces a long CP.

In a first aspect, the present disclosure provides a data processing method, which is applied to a network device. The data processing method includes: determining a to-be-transmitted according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol. The length of the second cyclic prefix of the data; the target data is generated according to the length of the second cyclic prefix and the data to be transmitted; and the target data is sent to the terminal device.

In an embodiment of the present disclosure, 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 OFDM symbol includes: determining the OFDM symbol included in the second cyclic prefix The preset number of ; according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol, determine the length of the second cyclic prefix of the data to be transmitted.

In an embodiment of the present disclosure, 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: according to the preset number and the length of the OFDM symbol Length, determine the total length of the OFDM symbols included in the second cyclic prefix as the first length; according to the preset number and the length of the first cyclic prefix, determine the total length of the first cyclic prefix included in the second cyclic prefix as the second length ; Determine the sum of the first length and the second length as the length of the second cyclic prefix.

In an embodiment of the present disclosure, generating the target data according to the length of the second cyclic prefix and the data to be transmitted includes: determining the first data corresponding to the second cyclic prefix according to the length of the second cyclic prefix and the data to be transmitted; Target data is generated according to the first data and the data to be transmitted, and the target data includes the first data and the data to be transmitted.

In an embodiment of the present disclosure, sending target data to a terminal device includes: sending multiple groups of PDSCH scheduling symbols to the terminal device, each group of PDSCH scheduling symbols is used to transmit one target data, and each group of PDSCH scheduling symbols includes data symbols and Cyclic prefix symbol, the data symbol is used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.

In an embodiment of the present disclosure, the data processing method further includes: sending configuration information to the terminal device, where the configuration information is used to indicate the number of cyclic prefix symbols in each group of PDSCH scheduling symbols.

In an embodiment of the present disclosure, the configuration information is sent to the terminal device through at least one of the following messages: a broadcast message, a radio resource control message, a medium access control layer control message, and a physical layer scheduling signaling indication message.

In an embodiment of the present disclosure, a time-domain scheduling signaling is sent to a terminal device, where the time-domain scheduling signaling is used to indicate a start symbol of a cyclic prefix symbol in multiple groups of PDSCH scheduling symbols and the number of symbols used for transmitting target data; Alternatively, 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 groups of PDSCH scheduling symbols.

In an embodiment of the present disclosure, the data processing method further includes: sending a multipath length parameter of the network device to the terminal device, where the multipath length parameter is used to instruct the terminal device to obtain data to be transmitted according to the multipath length parameter.

In a second aspect, the present disclosure provides a data processing method, which is applied to a terminal device, where the terminal device is within the coverage of multiple network devices, and the data processing method includes: receiving target data sent by multiple network devices; In the data, the data to be transmitted is obtained; wherein, the target data sent by multiple network devices is the same, and the target data is generated by the network device based on the length of the second cyclic prefix and the data to be transmitted, and the length of the second cyclic prefix is determined by the network device according to the subsection. The length of the first cyclic prefix corresponding to the carrier spacing is determined by the length of the OFDM symbol.

In an embodiment of the present disclosure, each target data includes the data to be transmitted and the first data corresponding to the second cyclic prefix, the first data is determined according to the length of the second cyclic prefix and the data to be transmitted, and receives multiple network The target data sent by the device includes: receiving multiple groups of PDSCH scheduling symbols sent by each network device, each group of PDSCH scheduling symbols is used to transmit one target data, and each group of PDSCH scheduling symbols includes data symbols and cyclic prefix symbols, and the data symbols are used for The data to be transmitted is transmitted, and the cyclic prefix symbol is used to transmit the first data.

In an embodiment of the present disclosure, obtaining data to be transmitted from target data sent by multiple network devices includes: obtaining configuration information sent by the network devices; determining the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information number; according to the number of cyclic prefix symbols, the data to be transmitted is obtained from the received target data.

In an embodiment of the present disclosure, acquiring the data to be transmitted from the received target data according to the number of cyclic prefix symbols includes: acquiring time-domain scheduling signaling sent by the network device; determining, according to the time-domain scheduling signaling, The number of start symbols and data symbols in multiple groups of PDSCH scheduling symbols, where the start symbol is the start symbol in the cyclic prefix symbol or the start symbol in the data symbol; according to the number of cyclic prefix symbols, the start symbol The symbols and the number of symbols determine the data symbols used to transmit the data to be transmitted; the data to be transmitted corresponding to the data symbols is obtained from the data symbols used to transmit the data to be transmitted.

In an embodiment of the present disclosure, acquiring the data to be transmitted from the received target data includes: according to the first starting position of the first data to be transmitted in the target data and the length of the OFDM symbol, corresponding data from multiple network devices The first data to be transmitted is obtained from the data symbols of delay; according to the first data to be transmitted and the second data to be transmitted, determine the data to be transmitted.

In an embodiment of the present disclosure, obtaining the second data to be transmitted from the second cyclic prefixes corresponding to multiple network devices according to the multipath length parameter, including: according to the multipath length parameter, the length of the first cyclic prefix, the OFDM The length of the symbol and the first starting position determine the second starting position of the second data to be transmitted in the second cyclic prefix corresponding to each network device; according to the second starting position and the length of the OFDM symbol, obtain multiple network devices The corresponding second data to be transmitted.

In a third aspect, the present disclosure provides a data processing apparatus, which is applied to network equipment, the data processing apparatus includes: a determination module configured to, according to the length of the first cyclic prefix corresponding to the subcarrier spacing and the orthogonal frequency division multiplexing of OFDM symbols The length of the second cyclic prefix determines the length of the second cyclic prefix of the data to be transmitted; the processing module is used to generate target data according to the length of the second cyclic prefix and the data to be transmitted; the sending module is used to send the target data to the terminal device.

In an embodiment of the present disclosure, the determining module is specifically configured to: determine a preset number of OFDM symbols included in the second cyclic prefix; The length of the second cyclic prefix of the transmitted data.

In an embodiment of the present disclosure, the determining module is specifically configured to: determine, according to the preset number and the length of the OFDM symbols, the total length of the OFDM symbols included in the second cyclic prefix as the first length; For the length of the cyclic prefix, determine the total length of the first cyclic prefix included in the second cyclic prefix as the second length; and determine the sum of the first length and the second length as the length of the second cyclic prefix.

In an embodiment of the present disclosure, the processing module is specifically configured to: determine the first data corresponding to the second cyclic prefix according to the length of the second cyclic prefix and the data to be transmitted; and generate target data according to the first data and the data to be transmitted , the target data includes the first data and the data to be transmitted.

In an embodiment of the present disclosure, the sending module is specifically configured to: send multiple groups of PDSCH scheduling symbols to a terminal device, each group of PDSCH scheduling symbols is used to transmit one target data, and each group of PDSCH scheduling symbols includes data symbols and cyclic prefix symbols , the data symbol is used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.

In an embodiment of the present disclosure, the sending module is further configured to: send configuration information to the terminal device, where the configuration information is used to indicate the number of cyclic prefix symbols in each group of PDSCH scheduling symbols.

In an embodiment of the present disclosure, the sending module is further configured to: send time-domain scheduling signaling to the terminal device, where the time-domain scheduling signaling is used to indicate the starting symbols of the cyclic prefix symbols in the multiple groups of PDSCH scheduling symbols and the starting symbols used for transmission The number of symbols of the target data; or, the scheduling signaling is used to indicate the starting symbols of the data symbols and the number of symbols of the data symbols in multiple groups of PDSCH scheduling symbols.

In an embodiment of the present disclosure, the sending module is further configured to: send a multipath length parameter of the network device to the terminal device, where the multipath length parameter is used to instruct the terminal device to acquire data to be transmitted according to the multipath length parameter.

In a fourth aspect, the present disclosure provides a data processing apparatus, which is applied to terminal equipment, where the terminal equipment is within the coverage of multiple network equipment, and the data processing apparatus includes: a receiving module for receiving target data sent by multiple network equipment; The obtaining module is used to obtain the data to be transmitted from the received target data; wherein, the target data sent by multiple network devices are the same, and the target data is generated by the network device based on the length of the second cyclic prefix and the data to be transmitted, and the first The length of the second cyclic prefix is determined by the network device according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol.

In an embodiment of the present disclosure, the obtaining module is specifically configured to: obtain configuration information sent by the network device; determine the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information; The data to be transmitted is obtained from the received target data.

In an embodiment of the present disclosure, the obtaining module is specifically configured to: obtain the time-domain scheduling signaling sent by the network device; and determine the number of start symbols and data symbols in multiple groups of PDSCH scheduling symbols according to the time-domain scheduling signaling , wherein the start symbol is the start symbol in the cyclic prefix symbol or the start symbol in the data symbol; according to the number of cyclic prefix symbols, the start symbol and the number of symbols, determine the data symbol used to transmit the data to be transmitted; The data to be transmitted corresponding to the data symbol is obtained from the data symbol used to transmit the data to be transmitted.

In an embodiment of the present disclosure, the obtaining module is specifically configured to: obtain the first data to be transmitted from the data symbols corresponding to multiple network devices according to the first starting position of the first data to be transmitted in the target data and the length of the OFDM symbol data; obtain the second data to be transmitted from the second cyclic prefixes corresponding to multiple network devices according to the multipath length parameter, and the multipath length parameter is used to indicate the data transmission delay of different network devices; according to the first data to be transmitted and the The second to-be-transmitted data is to determine the to-be-transmitted data.

In an embodiment of the present disclosure, the obtaining module is specifically configured to: determine the second cyclic 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 The second starting position of the second data to be transmitted in the prefix; according to the second starting position and the length of the OFDM symbol, the second data to be transmitted corresponding to the multiple network devices is acquired.

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

The transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: according to the length of the first cyclic prefix corresponding to the subcarrier interval and the orthogonal frequency division multiplexing The length of the OFDM symbol determines the length of the second cyclic prefix of the data to be transmitted; the target data is generated according to the length of the second cyclic prefix and the data to be transmitted; and the target data is sent to the terminal device.

In an embodiment of the present disclosure, the processor is further configured to perform the following operation: send configuration information to the terminal device, where the configuration information is used to indicate the number of cyclic prefix symbols in each group of PDSCH scheduling symbols.

In an embodiment of the present disclosure, the processor sends configuration information to the terminal device through at least one of the following messages: a broadcast message, a radio resource control message, a medium access control layer control message, and a physical layer scheduling signaling indication message.

In an embodiment of the present disclosure, the processor is further configured to perform the following operations: send time-domain scheduling signaling to the terminal device, where the time-domain scheduling signaling is used to indicate a start symbol of a cyclic prefix symbol in multiple groups of PDSCH scheduling symbols and the number of symbols used to transmit the target data; or, the scheduling signaling is used to indicate the starting symbol of the data symbol and the number of symbols of the data symbol in multiple groups of PDSCH scheduling symbols.

In an embodiment of the present disclosure, the processor is further configured to perform the following operations: sending a multipath length parameter of the network device to the terminal device, where the multipath length parameter is used to instruct the terminal device to obtain data to be transmitted according to the multipath length parameter.

In a sixth aspect, the present disclosure provides a terminal device, where the terminal device is within the coverage of multiple network devices, and the terminal device includes: a memory for storing a computer program; a transceiver for sending and receiving data under the control of a processor; a processor, configured to read the computer program in the memory and perform the following operations: receive target data sent by multiple network devices; obtain data to be transmitted from the received target data; wherein, the target data sent by multiple network devices In the same way, the target data is generated by the network device based on the length of the second cyclic prefix and the data to be transmitted. The length of the second cyclic prefix is the length of the first cyclic prefix corresponding to the subcarrier interval by the network device and the orthogonal frequency division multiplexing OFDM. The length of the symbol is determined.

In an embodiment of the present disclosure, each target data includes the data to be transmitted and the first data corresponding to the second cyclic prefix, the first data is determined according to the length of the second cyclic prefix and the data to be transmitted, and receives multiple network The target data sent by the device includes: for each network device, the receiving network device sends multiple groups of PDSCH scheduling symbols, each group of PDSCH scheduling symbols is used to transmit one target data, and each group of PDSCH scheduling symbols includes data symbols and cyclic prefix symbols, The data symbol is used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.

In an embodiment of the present disclosure, obtaining the data to be transmitted from the received target data includes: obtaining configuration information sent by a network device; determining the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information; The number of cyclic prefix symbols, the data to be transmitted is obtained from the received target data.

In an embodiment of the present disclosure, acquiring the data to be transmitted from the received target data includes: according to the first starting position of the first data to be transmitted in the target data and the length of the OFDM symbol, corresponding data from multiple network devices The first data to be transmitted is obtained from the data symbols of delay; according to the first to-be-transmitted data and the second to-be-transmitted data, obtain the to-be-transmitted data.

In an embodiment of the present disclosure, obtaining the second data to be transmitted from the second cyclic prefix according to the multipath length parameter includes: according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol, and the first starting position, determine the second starting position of the second data to be transmitted in the second cyclic prefix corresponding to each network device; according to the second starting position and the length of the OFDM symbol, obtain the second starting position corresponding to the multiple network devices to be transmitted data.

In a seventh aspect, the present disclosure provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to cause a processor to execute the data processing method provided in the first aspect or the second aspect.

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

In a ninth aspect, the present disclosure provides a communication system, including the network device described in any of the above and the terminal device described in any of the above.

In a data processing method, apparatus, network device and terminal device provided by the present disclosure, the second data to be transmitted is determined according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol. The length of the cyclic prefix; the target data is generated according to the length of the second cyclic prefix and the data to be transmitted; the target data is sent to the terminal device. Since the length of the cyclic prefix of the data to be transmitted is increased by orthogonal frequency division multiplexing of OFDM symbols, there is no need to modify the frame structure of the physical layer of the new air interface, so that the single frequency network technology can be applied in the new air interface at a low cost, and the broadcast is improved. Data transmission efficiency in multicast mode.

It should be understood that what is described in the above Summary section is not intended to limit key or critical features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Description of drawings

In order to illustrate the present disclosure or the technical solutions in the prior art more clearly, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are the For some of the disclosed embodiments, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is an example diagram of a communication scenario of the SFN technology provided by an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of an application scenario of a data processing process provided by an embodiment of the present disclosure;

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

4 is a flowchart of a method for generating target data provided by an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of the principle of determining a second cyclic prefix according to an embodiment of the present disclosure;

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

FIG. 7 is a schematic structural diagram of multiple groups of PDSCH scheduling symbols provided by an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of the principle of obtaining data to be transmitted by a terminal device according to an embodiment of the present disclosure;

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

10 is a schematic flowchart of a data processing method provided by another embodiment of the present disclosure;

FIG. 11 is a schematic diagram of the principle of obtaining data to be transmitted by a terminal device according to another embodiment of the present disclosure;

12 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present disclosure;

13 is a schematic structural diagram of a data processing apparatus according to another embodiment of the present disclosure;

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

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

Detailed ways

In this disclosure, the term "and/or" describes the association relationship of associated objects, and means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. a situation. The character "/" generally indicates that the associated objects are an "or" relationship. In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar.

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

With the continuous development of mobile terminals, people have more and more demands for video streaming media services suitable for mobile terminals, such as high-definition TV, AR/VR images and other services. Among the above services, the ordinary MP4 data rate 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. Therefore, with the increase of business requirements, a higher data transmission rate is required to support higher-speed video streaming services, and mobile The terminal can quickly receive the video stream delivered by the network device.

At present, the broadcast multicast mode is widely used because it can receive related video streams without feedback from mobile terminals, and can meet the higher data transmission rate requirements of video streaming media services. frequency network, SFN) can effectively improve the data transmission efficiency in broadcast multicast mode, and is widely used in broadcast multicast mode. For example, in the transmission of broadcast multicast services in 4GLTE, SFN technology is usually used to increase cell edge terminals. The signal power of the device improves the spectrum utilization at the edge of the cell and improves user satisfaction. For the convenience of understanding, the following describes the application scenarios of the SFN technology in detail with reference to Figure 1:

FIG. 1 is an example diagram of a communication scenario of the SFN technology provided by an embodiment of the present disclosure. As shown in FIG. 1 , examples of communication scenarios of 1 cell, 3 cells, 12 cells and 27 cells are provided. It should be understood that the number of cells is not specifically limited in practical applications. Wherein, each cell includes at least one network device for sending data to the terminal device. In order to improve the cell edge spectrum utilization, adjacent cells (network equipment) will send the same broadcast data to the terminal equipment. Correspondingly, the terminal equipment will receive the data sent by multiple cells at the same time. Due to the distance between each cell and the terminal equipment Different, the data received by the terminal device will be superimposed, resulting in interference. With SFN technology, terminal equipment can obtain original data through the long cyclic prefix (CP) in the received data, overcoming the transmission multipath delay of different sites, thereby avoiding interference and improving data transmission quality.

However, the current new radio interface (New Radio, NR), such as 5G new air interface technology, its frame structure parameters do not support the frame structure of the long CP, so the SFN technology cannot be used to improve the data transmission efficiency in the broadcast multicast mode. If a long CP is introduced, the frame structure of the physical layer needs to be modified, and the process is relatively complicated and the cost is high.

In order to solve the above problems, the embodiments of the present disclosure provide a data processing method, apparatus, network device, and terminal device, which increase the length of the cyclic prefix of the data to be transmitted by orthogonal frequency division multiplexing of OFDM symbols without modifying the physical properties of the new air interface. Layer frame structure, so that the single frequency network technology can be applied in the new air interface at low cost, and the data transmission efficiency in the broadcast multicast mode can be improved. The application scenarios of the present disclosure are described below:

FIG. 2 is a schematic diagram of an application scenario of the data processing method provided by an embodiment of the present disclosure. As shown in FIG. 2 , the scenario includes: a terminal device 101 and a plurality of network devices (network device 1, network device 2 . . . network device n).

It should be noted that the above-mentioned FIG. 2 is schematic. In practical applications, the above-mentioned scenarios may also include other devices, such as wireless repeater devices and wireless backhaul devices, which are not shown in FIG. 2 . In addition, the embodiments of the present disclosure do not specifically limit the value of n and the number of terminal devices 101 .

In practical applications, when 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 each network device sends the data to be transmitted to the terminal device 101. The OFDM symbol is used to generate an extended cyclic prefix (CP) of the data to be transmitted, target data is generated by using the extended CP and the data to be transmitted, and then the target data is sent to the terminal device 101 .

Correspondingly, after receiving the superimposed data of the target data sent by the multiple network devices, the terminal device 101 acquires the data to be transmitted from the superimposed data according to the extended CP in each target data. In practical applications, there is no specific limitation on the type of data to be transmitted. Exemplarily, the data to be transmitted may be data corresponding to the above-mentioned services such as high-definition television and AR/VR images.

It should be noted that the above-mentioned terminal device 101 may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. The network device may include Access network equipment and core network equipment, the access network equipment may be, for example, wireless access network equipment.

In different systems, the names of the above-mentioned terminals may be different. For example, in a 5G system, the above-mentioned terminals may be called user equipment (User Equipment, UE), and the above-mentioned terminals may also be wireless terminals. An access network (Radio Access Network, RAN) communicates with one or more core networks (Core Network, CN), and the wireless terminals may be mobile terminals, such as mobile phones (or "cellular" phones) and mobile phones with mobile terminals. Computers, for example, may be portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (Personal Digital Assistants), PDA) and other devices. A wireless terminal may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, A remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device) are not limited in the embodiments of the present disclosure.

The technical solutions provided by the embodiments of the present disclosure may be applicable to various systems, especially 5G systems. For example, the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc. These various systems include terminals and network equipment. The system also includes a core network part, such as an evolved packet system (Evloved Packet System, EPS), a 5G system (5GS), and the like.

It should be noted that the methods and apparatuses provided by the embodiments of the present disclosure are based on the same application concept. Since the methods and apparatuses solve problems in similar principles, the apparatuses and methods can be referred to each other for implementation, and repeated descriptions will not be repeated.

FIG. 3 is a schematic diagram of signaling interaction of a data processing method provided by an embodiment of the present disclosure. As shown in Figure 3, the data processing method includes the following steps:

S301. The network device determines 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 OFDM symbol.

In the current NR technology, the subcarrier spacing (SCS) supported by the data channel and the control channel usually includes the following: 15KHz, 30KHz, 60KHz, 120KHz, the length and orthogonality of the first cyclic prefix corresponding to the above SCS The length of the frequency division multiplexed OFDM symbol is shown in the following table:

序号serial number	Δf＝2 ^μ·15[kHz] Δf=2 ^μ ·15[kHz]	第一循环前缀长度(us)First cyclic prefix length (us)	OFDM符号长度(us)OFDM symbol length (us)
00	SCS＝15SCS=15	4.694.69	66.766.7
11	SCS＝30SCS=30	2.342.34	33.333.3
22	SCS＝60SCS=60	1.17(标准CP)、4.16(延长CP)1.17 (standard CP), 4.16 (extended CP)	16.716.7
33	SCS＝120SCS=120	0.590.59	8.38.3

As for the solution for determining the length of the second cyclic prefix of the data to be transmitted, it will be shown in the following embodiments.

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

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

S3011. Determine a preset number of OFDM symbols included in the second cyclic prefix.

The preset number of OFDM symbols is the number of OFDM symbols used to increase the cyclic prefix length of the data to be transmitted. It should be noted that, the value of the preset number is not specifically limited in this embodiment of the present disclosure. For example, the value of the preset number may be set according to the spacing of each cell (network device). Specifically, if the distance between cells is smaller, the required length of the second cyclic prefix is smaller, that is, the preset number of OFDM symbols is smaller. In practical applications, the preset value may be determined through a protocol, or indicated to the terminal by a broadcast message/RRC message/MAC layer control message/physical layer scheduling signaling.

S3012. Determine 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.

Specifically, firstly, 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 correspondence between the subcarrier interval, the length of the first cyclic prefix, and the length of the OFDM symbol. Exemplarily, taking the current SCS of 15 kHz as an example, the corresponding first cyclic prefix length is 4.69 us, and the corresponding OFDM symbol length is 66.67 us. Further, the length of the second cyclic prefix is obtained according to the preset number of OFDM symbols used to increase the length of the cyclic prefix and the length of the first cyclic prefix.

In practical applications, the length of the second cyclic prefix can be obtained through the following steps:

(1) according to the preset number and the length of the OFDM symbol, determine that the total length of the OFDM symbol included in the second cyclic prefix is the first length; Specifically, the first length can be determined according to the following formula 1:

L ₁ =m×L _OFDM formula 1

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

(2) According to the preset number and the length of the first cyclic prefix, determine that the total length of the first cyclic prefix included in the second cyclic prefix is the second length; specifically, the second length can be determined according to the following formula 2:

L ₂ =(m+1)×L _CP1 Formula 2

Wherein, L ₂ is the total length (second length) of the first cyclic prefix included 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) Determine the sum of the first length and the second length as the length of the second cyclic prefix.

Combining the above, the length of the second cyclic prefix can be determined according to the following formula 3:

L _CP2 =(m+1)×L _CP1 +m×L _OFDM formula 3

Exemplarily, still taking the current SCS as 15KHz as an example, the length of the corresponding first cyclic prefix is 4.69us, and the length of the OFDM symbol is 66.67us. If one OFDM symbol is used as the extension (that is, the preset number of m value is 1), then the first length is 66.67us and the second length is 9.38us, then it can be concluded that the length of the corresponding second cyclic prefix is 76.05us; if two OFDM symbols are used as the extension (that is, the preset number of The value of m is 2), then the first length is 133.34us and the second length is 14.07us, then it can be obtained that the length of the corresponding second cyclic prefix is 147.4us.

In practical applications, a target data is usually sent to a terminal device through a group of consecutive PDSCH scheduling symbols, and each group of PDSCH scheduling symbols includes data symbols used to transmit data to be transmitted and a cyclic prefix used to transmit data corresponding to the cyclic prefix. symbol, for the convenience of understanding, the following describes the generation process of the second cyclic prefix with specific examples:

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

Figure (b) in Figure 5 is a schematic diagram of data scheduling when one OFDM symbol is used to increase the length of the cyclic prefix. As shown in Figure (b), when one OFDM symbol is used to increase the length of the cyclic prefix, the 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.

Please continue to refer to FIG. 4. As shown in FIG. 4, the above step S302 may specifically include the following steps:

S3021. Determine the 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, corresponding processing is first performed on the data to be sent to obtain the data to be processed. Specifically, taking the data to be sent as frequency domain data (eg, a complex number sequence of 4096 points), performing inverse Fourier transform processing on the frequency domain data to obtain the data to be transmitted.

Exemplarily, taking the input frequency domain data as _ak (k=0,1,...FFT _size -1) as an example, through inverse Fourier transform processing, the obtained data to be processed is s _k (k=0, 1, . . . FFT _size -1), as for the processing process, please refer to the solutions in the prior art, which will not be repeated here.

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

In practical applications, 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 points of data.

Further, the sequence length corresponding to the second cyclic prefix is determined according to the sequence length corresponding to the first cyclic prefix and the sequence length corresponding to the OFDM symbol used to increase the length of the cyclic prefix.

For ease of understanding, please refer to FIG. 6 , which is a schematic diagram of the principle of generating target data according to an embodiment of the present disclosure. As shown in FIG. 6 , when the length of the cyclic prefix is increased by the length of one OFDM symbol as an example (that is, the sequence length corresponding to the OFDM symbol is 8 samples of data), and the length of the first cyclic prefix corresponds to 2 samples of data , the length of the second cyclic prefix can be determined to be 12 sample points of 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 as to obtain the first data corresponding to the second cyclic prefix. Specifically, in combination with the above embodiments, the second cyclic prefix length of the data to be transmitted is the sum of the first length and the second length. In this step, the value of the sample data corresponding to the first length and The value of the sample point data corresponding to the second length can determine the first data corresponding to the second cyclic prefix. Exemplarily, please continue to refer to FIG. 6 , use the sample point data corresponding to the data to be transmitted as the sample point data corresponding to the first length, that is, the sample point data corresponding to the first length is (1, 2, 3, 4, 5, 6,7,8); adopt the last sample data in the sample data corresponding to the data to be transmitted as the sample data corresponding to the second length, that is, the sample data corresponding to the first length is (5,6,7,8 ); Further, the first data can be obtained according to the sample point data corresponding to the second length and the sample point data corresponding to the first length, that is, the sample point data corresponding to the first data is (5,6,7,8, 1, 2, 3, 4, 5, 6, 7, 8).

S3022. Generate target data according to the first data and the data to be transmitted.

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

It should be noted that FIG. 6 takes one OFDM symbol to increase the length of the cyclic prefix as an example. In practical applications, the methods and principles of increasing the length of the cyclic prefix with other OFDM symbols are similar, and will not be repeated here. .

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

in,

is the starting position of the 1ms subframe,

is the target data, m is the preset number of OFDM symbols used to increase the length of the cyclic prefix, l is the symbol number in the time slot, k is a constant 64, μ is the configured SCS label, and μ ₀ is the reference SCS configured by the protocol The label of , where Nu is equivalent to L _OFDM in the above formula,

Equivalent to L _CP2 in the above formula.

S303, the network device sends the target data to the terminal device.

In practical applications, the embodiments of the present disclosure do not specifically limit the specific manner of sending the target data to the terminal device. Exemplarily, multiple target data may be sent by sending multiple groups of PDSCH scheduling symbols to the terminal device, wherein each group of PDSCH scheduling symbols is used to transmit one target data, and each group of PDSCH scheduling symbols includes a data symbol and a cyclic prefix symbol, The data symbol is used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.

For easy understanding, please refer to FIG. 7 , which is a schematic structural diagram of multiple groups of PDSCH scheduling symbols according to an embodiment of the present disclosure. As shown in Figure 7, taking a time slot containing 14 symbols and using one OFDM symbol to increase the cyclic prefix length as an example, the time slot includes 7 groups of PDSCH scheduling symbols, 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, which is used to transmit the data to be transmitted in the target data, and symbol 0 is a cyclic prefix symbol, which is used to transmit the first data corresponding to the second cyclic prefix of the data to be transmitted. .

It should be noted that the above process is a data processing scheme corresponding to a network device sending target data. In practical applications, the data processing scheme corresponding to other network devices sending target data is similar to the above scheme, and will not be repeated here.

S304. The terminal device receives target data sent by multiple network devices.

S305. Acquire the data to be transmitted from the received target data.

It should be noted that, in practical applications, in the broadcast multicast mode, multiple network devices will send target data to the terminal device at the same time. Due to the different distances between each network device and the terminal device, the terminal device receives the The data is also different. In order to avoid the interference problem of ultra-long multipath, the terminal device only receives the data of the data symbol part in each group of PDSCH scheduling symbols, so as to obtain the data to be processed in the data symbol. For the convenience of understanding, the following describes the manner in which the terminal device obtains the data to be processed with reference to FIG. 8 :

FIG. 8 is a schematic diagram of the principle of acquiring data to be transmitted by a terminal device according to an embodiment of the present disclosure. It should be noted that FIG. 8 takes two network devices with different distances from the terminal device as an example (the first network device and the second network device in the figure), and the distance between the first network device and the terminal device is smaller than that of the second network device. The distance between the device and the terminal device, the multipath signal of the first network device is five times earlier than the multipath signal of the second network device (that is, the same terminal device receives five samples of the target data sent by the first network device. After the data is clicked, 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 starting boundary of the symbol in the target data sent by the first network device received by the terminal device at the current moment is sample data 8, the terminal device obtains 8 sample point data including the sample point data, that is, the sample point data (8, 1, 2, 3, 4, 5, 6, 7) shown in FIG. The sample data, that is, the sample data (3, 4, 5, 6, 7, 8, 1, 2) shown in FIG. 8 . Since the multipath signal of the second network device is the cyclic data of the multipath signal of the first network device, after receiving the two signals, the terminal device combines the two signals to obtain the data to be processed corresponding to the target data, so that the energy can be obtained enhanced.

In a data processing method provided by the present disclosure, the network device determines 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 OFDM symbol; The length of the second cyclic prefix and the data to be transmitted generate target data; the target data is sent to the terminal device, and the terminal device obtains the data to be transmitted from the target data sent by multiple network devices. Since the length of the cyclic prefix of the data to be transmitted is increased by orthogonal frequency division multiplexing of OFDM symbols, there is no need to modify the frame structure of the physical layer of the new air interface, so that the single frequency network technology can be applied in the new air interface at a low cost, and the broadcast is improved. The data transmission efficiency in the multicast mode, in addition, because 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, it can avoid the interference problem of ultra-long multipath and improve the Data transmission quality improves user experience.

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

S311. The network device determines 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 OFDM symbol.

S312. The network device generates target data according to the length of the second cyclic prefix and the data to be transmitted.

S313: The network device sends multiple groups of PDSCH scheduling symbols to the terminal device.

Wherein, each group of PDSCH scheduling symbols is used to transmit one target data, each group of PDSCH scheduling symbols includes data symbols and cyclic prefix symbols, the data symbols are used to transmit data to be transmitted, and the cyclic prefix symbols are used to transmit 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 , for details, reference may be made to the above embodiment, and details are not repeated here.

S314. The network device sends configuration information to the terminal device.

The configuration information is used to indicate 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 group of PDSCH scheduling symbols is the preset number of OFDM symbols included in the second cyclic prefix, that is, the above m. In practical applications, not all PDSCH scheduling symbols in a time slot may be used to transmit target data, that is, some of the PDSCH scheduling symbols are unscheduled symbols. Therefore, the network device needs to inform the terminal device, The number of PDSCH symbols used for transmitting target data in the current time slot, so that the terminal device can correctly receive the target data.

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

In some embodiments, there are various manners for sending configuration information to the terminal device, which are not specifically limited in the embodiments of the present disclosure. On the one hand, it can be implemented through high-layer signaling configuration, for example, when PDSCH parameter configuration is performed, the number of cyclic prefix symbols in each group of PDSCH scheduling symbols is indicated. Exemplarily, if the parameter configuration is: sym_num_for_CP{sym_0, sym_1}, it means to indicate to the terminal device: the number of cyclic prefix symbols in each group of PDSCH scheduling symbols is 0, or the number of cyclic prefix symbols in each group of PDSCH scheduling symbols is 0. The number is 1; if the parameter "sym_for_CP" is configured, it means that the number of cyclic prefix symbols in each group of PDSCH scheduling symbols is 1. If this parameter is not configured, it means that the number of cyclic prefix symbols in each group of PDSCH scheduling symbols is 0.

On the other hand, the DCI indication method can also be used to send the configuration information to the terminal equipment. For example, the configuration information can be sent to the terminal equipment by adding a bit indication in the DCI, or by associating an existing bit indication, which will not be repeated here. .

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

S316: The network device sends time-domain scheduling signaling to the terminal device.

Wherein, the time-domain scheduling signaling is used to indicate the starting symbols of the cyclic prefix symbols in the multiple groups of PDSCH scheduling symbols and the number of symbols used to transmit the target data; or, the scheduling signaling is used to indicate the number of data symbols in the multiple groups of PDSCH scheduling symbols. Number of symbols for start symbols and data 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). Exemplarily, the time-domain scheduling signaling may include a start symbol S (referred to as DCI_S) and a number of symbols L (referred to as DCI_L for short). Wherein, the start symbol DCI_S may be the start symbol in the cyclic prefix symbols among the multiple groups of PDSCH scheduling symbols, or may also be the start symbol in the data symbols; the number of symbols DCI_L may be among the multiple groups of PDSCH scheduling symbols, used for The number of symbols of the transmission target data, or, may also be the number of symbols of data symbols in multiple groups of PDSCH scheduling symbols.

S317 , the terminal device determines, according to the time-domain scheduling signaling, the number of start symbols and data symbols in the multiple groups of PDSCH scheduling symbols.

Correspondingly, the start symbol DCI_S and the number of symbols DCI_L parsed by the terminal device have the following two situations:

(1) start symbol DCI_S is the start symbol in the cyclic prefix symbol, and the number of symbols DCI_L is the number of symbols used to transmit target data;

(2) The start symbol DCI_S is the start symbol in the data symbols, and the number of symbols DCI_L is the number of symbols of the data symbols.

It should be noted that, in practical applications, the execution order of steps S314 to S315 and steps S316 to S317 is not specifically limited. That is, S314-S315 can be executed first, and then S316-S317 can be executed, or S316-S317 can be executed first, and then S314-S315 can be executed.

S318. The terminal device determines, according to the number of cyclic prefix symbols, the start symbol and the number of symbols, the data symbols used for transmitting the data to be transmitted in the multiple groups of PDSCH scheduling symbols.

Correspondingly, on the one hand, when the analysis result of the terminal device is the above situation (1): first, according to the start symbol DCI_S and the number of symbols DCI_L, determine all the cyclic prefix symbols in the multiple groups of PDSCH scheduling symbols scheduled this time, and then according to the cyclic prefix symbols. The prefix symbols determine the data symbols in groups of PDSCH scheduling 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 scheduled this time can be obtained. are: DCI_S, DCI_S+2, DCI_S+4, …, DCI_S+(DCI_L-2)

Further, according to the symbol quantity DCI_L of the scheduling target data, it is determined that all data symbols in the scheduled multiple groups of PDSCH scheduling symbols are: DCI_S+1, DCI_S+3, ..., DCI_S+(DCI_L-1)

For the convenience of understanding, please refer to FIG. 11 , which is a schematic diagram of the principle of acquiring data to be transmitted by a terminal device according to another embodiment of the present disclosure. As shown in Figure 11, taking 14 PDSCH symbols in a time slot as an example, when the result of the terminal equipment analysis is: the starting symbol DCI_S of the cyclic prefix symbol is 4, and the number of symbols DCI_L used for transmitting target data is 8 , it can be concluded that

symbols

4, 6, 8, and 10 in this scheduling are cyclic prefix symbols, and further, according to the cyclic prefix symbols, it can be concluded that

symbols

5, 7, 9, and 11 in this scheduling are data symbols.

On the other hand, when the analysis result of the terminal equipment is the above situation (2): firstly, according to the start symbol DCI_S and the number of symbols DCI_L, determine all the data symbols in the multiple groups of PDSCH scheduling symbols scheduled this time, and then determine according to the data symbols Cyclic prefix symbols in groups of PDSCH scheduling 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, it can be concluded that all the data symbols in the multiple groups of PDSCH scheduling symbols scheduled this time are: : 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 the cyclic prefix symbols in the multiple groups of PDSCH scheduling symbols scheduled this time are: DCI_S, DCI_S+2, ..., DCI_S+2*(DCI_L-1). Exemplarily, as shown in FIG. 11 , still taking 14 PDSCH scheduling symbols included in a time slot as an example, when the terminal device analyzes the result as follows: the starting symbol DCI_S of the data symbol is 5, and the number of symbols DCI_L of the data symbol is 4, it can be concluded that

symbols

5, 7, 9, and 11 in this scheduling are data symbols, and further, according to the data symbols, it can be concluded that

symbols

4, 6, 8, and 10 in this scheduling are cyclic prefix symbols.

S319. The terminal device acquires the data to be transmitted corresponding to the data symbol from the data symbol used to transmit the data to be transmitted.

It should be noted that the above steps are the process of determining the data symbols sent by the network device from multiple groups of PDSCH scheduling symbols sent by a single network device. In practical applications, in the broadcast multicast mode, there will be multiple network devices. At the same time, target data is sent to the terminal device (that is, multiple network devices simultaneously send multiple groups of PDSCH scheduling symbols). Due to the different distances between each network device and the terminal device, the data received by the terminal device at the same time are also different. In order to avoid the interference problem of ultra-long multipath, the terminal device only receives the data of the data symbol part in each group of PDSCH scheduling symbols, so as to obtain the data to be processed in the data symbol.

In one implementation, the terminal device may acquire the data to be transmitted in the corresponding data symbols of multiple network devices according to the method in the embodiment shown in FIG. 8 . It should be understood that in FIG. 8 one or two network devices (the first network device and the second network device) as an example, but not limited to this, the following steps will be described in detail in conjunction with FIG. 8:

As shown in Figure 8,

symbols

2 and 3 are the corresponding data symbols in the first network device and the second network device, respectively. Since the distances between the first network device and the second network device and the terminal device are different, in the same The data received by the terminal device at the moment is also different. Still taking the above example as an example, in order to avoid the interference problem of ultra-long multipath, the terminal device only receives the data symbols in each group of PDSCH scheduling symbols, so as to obtain the data to be processed in the data symbols.

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 and other network devices corresponding to the data. data of the same length. Specifically, taking the starting 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: the data in the data symbol sent by the first network device (8, 1, 2, 3, 4, 5, 6, 7) and the mixed data of the data (3, 4, 5, 6, 7, 8, 1, 2) in the data symbols sent 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. As for the scheme of obtaining the data to be transmitted from the mixed data, reference may be made to the prior art, which is not described here. Repeat. In addition, it should be noted that the above steps are shown in the scheme of acquiring the data to be transmitted from one corresponding data symbol of two network devices, and the scheme of acquiring the data to be transmitted from the data symbols of other number of network devices is the same as the above The scheme is similar and will not be repeated here.

With the method for obtaining data to be transmitted provided in this embodiment, the terminal device only receives the data of the data symbol part in each group of PDSCH scheduling symbols, and can obtain the data to be transmitted from the data symbols without modifying the terminal.

In practical applications, increasing the length of the cyclic prefix through OFDM symbols will reduce the utilization of PDSCH scheduling symbols (the original PDSCH scheduling symbols are all used to transmit data to be transmitted, and this scheme needs to use one or more of these symbols for scheduling the first data corresponding to the cyclic prefix). In an actual base station deployment scenario, the multipath signal may not differ by 1 symbol. Therefore, in another implementation, the terminal device can perform reception enhancement according to the "multipath length parameter" of the actual deployment scenario. Therefore, the utilization rate of symbols is improved. Specifically, in addition to the method for data to be transmitted obtained in the above-mentioned embodiment, the terminal device can also obtain a data from the first data corresponding to the cyclic prefix in the target data according to the multipath length parameter. One or more copies of the data to be transmitted, and then the multiple acquired data to be transmitted are combined and processed, thereby improving the receiving performance. The specific implementation of this solution will be described in detail below with reference to FIG. 10 , wherein, in this embodiment, it is assumed that one OFDM symbol is used as the extension of the CP:

FIG. 10 is a schematic flowchart of a data processing method provided by another embodiment of the present disclosure. As shown in FIG. 10 , in the above step S305, the data to be transmitted is obtained from the received target data, which may specifically include the following steps:

S321. Obtain the first data to be transmitted from data symbols corresponding to multiple network devices according to the first starting position of the first data to be transmitted in the target data and the length of the OFDM symbol.

The first starting position is the position of the starting sample data of the data symbol in the target data in the nearest network device. In practical applications, it can be determined by searching for the synchronization signal or other reference signals of the residing cell, wherein , the nearest cell is the camping cell, which is not repeated here. For the 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 used as examples (the first network device and the second network device in the figure), wherein the first network The device is the network device closest to the terminal device, the symbol 1 is the cyclic prefix symbol in a target data sent by the first network device, the symbol 2 is the data symbol in a target data sent by the first network device, and the symbol 3 is the second A cyclic prefix symbol in a target data sent by a network device;

In some embodiments, the terminal device can determine the starting sample point data of the data to be transmitted in symbol 2 (for example, the sample point data 1 in FIG. 11 ) by searching for the synchronization signal, that is, the first starting position of the data symbol is the The 13th sample point data in the target data. Further, from the target data sent by the multiple network devices, starting from the first starting position, the sample point data of the length of one OFDM symbol is obtained backward, so as to obtain the first data symbol in the data symbols corresponding to the multiple network devices. data to be transmitted. That is, sample data (1, 2, 3, 4, 5, 6, 7, 8) and mixed data of (5, 6, 7, 8, 1, 2, 3, 4) as shown in FIG. 11 .

S322. Obtain a multipath length parameter of the network device.

Among them, the multipath length parameter is used to indicate the data transmission delay of different network devices. In practical applications, the multipath length parameters of all network devices in the same broadcast multicast mode are the same. Therefore, in this step, one of them can be obtained. or the multipath length parameters of multiple network devices, or the multipath length parameters of all network devices can be obtained. In addition, the method for obtaining the multipath length parameter is not specifically limited in the embodiments of the present disclosure. On the one hand, it can be sent by the network device to the terminal device, for example, indicated to the terminal through a system message, or configured through RRC signaling, and the MAC control Signaling indication, or indication through physical layer scheduling information; on the other hand, the terminal device can also determine the multipath of the network device according to the received synchronization signals/clock signals of multiple network devices and according to the synchronization signals/clock signals As for the determination method of the length parameter, the synchronization signal/clock measurement quantity can be configured by the base station, which is measured and calculated by the terminal itself, which will not be repeated here.

S323. Acquire the second data to be transmitted from the second cyclic prefixes corresponding to the multiple network devices according to the multipath length parameter.

Specifically, step S322 may include the following steps S3231-S3232: S3231, according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol and the first starting position, determine the second cyclic prefix corresponding to each network device. The second starting position of the second data to be transmitted.

Specifically, the second start position of the corresponding data symbol in other network devices can be obtained according to the following formula: OS2-start=OS1_start-L _OFDM +L _CP1 +L _CP2 -multi_path, where OS1_start is the nearest network device The first starting position of the data to be transmitted in the data symbol, the second starting position of the corresponding data symbol in other network devices in OS2-start, L _OFDM is the length of the OFDM symbol, L _CP1 , L _CP2 are the first cycle of the data symbol Prefix length, multi_path is the multipath length parameter.

In practical applications, when the value of L _CP1 +L _CP2 -multi_path is greater than 0, it means 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. Acquire second data to be transmitted corresponding to multiple network devices according to the second starting position and the length of the OFDM symbol.

Specifically, for each network device, starting from the second start bit position corresponding to the network device, and taking the L _OFDM length backwards, that is the second data to be transmitted, please continue to refer to FIG. 11 , the second data to be transmitted is The sample data in the figure (5, 6, 7, 8, 1, 2, 3, 4).

S324. Determine the data to be transmitted according to the first data to be transmitted and the second data to be transmitted.

Specifically, the following two cases are included: 1. When the value of L _CP1 +L _CP2 -multi_path is equal to 0, the terminal device can receive a complete and independent data symbol from the first data (the data of the long CP), that is, it can obtain a The complete second data to be transmitted does not need sample data used together with the second data to be transmitted, that is, OS2-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 means that the terminal device has (L _OFDM +L _CP1 +L _CP2 -multi_path) samples without multipath interference If it can be used, it needs to use the common sample data with the data symbol of the nearest network device, and the number of common sample data is: multi_path-L _CP1 +L _CP2 , that is, the number of samples of the superimposed data is multi_path -L _CP1 +L _CP2 , only one part of the second data to be transmitted can be obtained at this time.

Further: when the second to-be-transmitted data and the first to-be-transmitted data have different starting phases, phase correction needs to be performed. That is, phase rotation needs to be performed on the second data to be transmitted or the first data to be transmitted, wherein the phase rotation factor is: e ^f(d)ωj , which is a function related to d and whose amplitude mode is 1. d is related to (L _CP1 +L _CP2 -multi_path).

For the convenience of understanding, please continue to refer to FIG. 11. The multipath length parameter multi_path in FIG. 11 is 10us (corresponding to 5 sample data in the figure), and the first cycle length is 2 sample data (ie L _CP1 , Both L _CP2 are 2), and an OFDM symbol is used to increase the length of the cyclic prefix (that is, L _OFDM is 8) as an example, but it is not limited in practical applications. As shown in Figure 11, symbol 2 is a data symbol in a target data sent by the nearest network device (the first network device), and sample 1 in the figure is the starting sample data of the data to be transmitted in symbol 2, that is, The first starting position; symbol 3 is the cyclic prefix symbol in the target data sent by the second network device.

In this solution, if the value of multi_path is greater than L _CP1 +L _CP2 , but smaller than L _CP1 +L _CP2 +L _OFDM , it can be obtained according to the above formula: OS2-start=OS1_start-7, that is, the second starting position is the sixth 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, that is, only one data in the symbol 2 and the symbol 3 is superimposed (ie, the sample data 4 in the figure).

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

In the embodiment of the present disclosure, the terminal device can perform reception enhancement according to the "multipath length parameter" of the actual deployment scenario, thereby improving the utilization rate of symbols.

On the network device side, an embodiment of the present disclosure provides a data processing apparatus, which is applied to a network device. FIG. 12 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present disclosure. As shown in FIG. 12 , the data processing apparatus 1200 includes: a determining module 1201, configured to determine the second 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. The length of the cyclic prefix; the processing module 1202 is used for generating target data according to the length of the second cyclic prefix and the data to be transmitted; the sending module 1203 is used for sending the target data to the terminal device.

In an embodiment of the present disclosure, the determining module 1201 is specifically configured to: determine a preset number of OFDM symbols included in the second cyclic prefix; determine the preset number, the length of the first cyclic prefix and the length of the OFDM symbols according to the preset number The length of the second cyclic prefix of the data to be transmitted.

In an embodiment of the present disclosure, the determining module 1201 is specifically configured to: determine the total length of the OFDM symbols included in the second cyclic prefix as the first length according to the preset number and the length of the OFDM symbols; according to the preset number and the length of the OFDM symbols For the length of the first cyclic prefix, the total length of the first cyclic prefix included in the second cyclic prefix is determined as the second length; the sum of the first length and the second length is determined as the length of the second cyclic prefix.

In an embodiment of the present disclosure, the processing module 1202 is specifically configured to: determine the first data corresponding to the second cyclic prefix according to the length of the second cyclic prefix and the data to be transmitted; generate a target according to the first data and the data to be transmitted data, the target data includes the first data and the data to be transmitted.

In an embodiment of the present disclosure, the sending module 1203 is specifically configured to: send multiple groups of PDSCH scheduling symbols to the terminal device, each group of PDSCH scheduling symbols is used to transmit one target data, and each group of PDSCH scheduling symbols includes a data symbol and a cyclic prefix symbol, the data symbol is used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.

In an embodiment of the present disclosure, the sending module 1203 is further configured to: send configuration information to the terminal device, where the configuration information is used to indicate the number of cyclic prefix symbols in each group of PDSCH scheduling symbols, where the number of cyclic prefix symbols is The preset number of OFDM symbols included in the second cyclic prefix.

In an embodiment of the present disclosure, the sending module 1203 is further configured to: send time-domain scheduling signaling to the terminal device, where the time-domain scheduling signaling is used to indicate a start symbol used for transmitting target data in multiple groups of PDSCH scheduling symbols and The number of symbols used to transmit the target data.

In an embodiment of the present disclosure, the sending module 1203 is further configured to: send a multipath length parameter of the network device to the terminal device, where the multipath length parameter is used to instruct the terminal device to determine the data to be transmitted from the target data according to the multipath length parameter .

It should be noted here that the above-mentioned apparatus provided by the present disclosure can correspondingly implement all the method steps implemented by the network device in the above-mentioned method embodiments, and can achieve the same technical effect, and the method in this embodiment and the method will not be discussed here. The same parts and beneficial effects of the embodiments are described in detail.

On the terminal device side, an embodiment of the present disclosure provides a data processing apparatus, which is applied to a terminal device, and the terminal device is within the coverage of multiple network devices. FIG. 13 is a schematic structural diagram of a data processing apparatus according to another embodiment of the present disclosure. As shown in FIG. 13 , the data processing apparatus 1300 includes: a receiving module 1301 for receiving target data sent by multiple network devices; an obtaining module 1302 for obtaining data to be transmitted from the received target data; wherein, The target data sent by multiple network devices is the same. The target data is generated by the network device based on the length of the second cyclic prefix and the data to be transmitted. The length of the second cyclic prefix is the length of the first cyclic prefix corresponding to the subcarrier interval by the network device. and Orthogonal Frequency Division Multiplexing determined by the length of the OFDM symbol.

In an embodiment of the present disclosure, each target data includes the data to be transmitted and the first data corresponding to the second cyclic prefix, the first data is determined according to the length of the second cyclic prefix and the data to be transmitted, and the receiving module specifically uses To: for each network device, the receiving network device sends multiple groups of PDSCH scheduling symbols, each group of PDSCH scheduling symbols is used to transmit one target data, each group of PDSCH scheduling symbols includes data symbols and cyclic prefix symbols, and the data symbols are used for transmission to be Data is transmitted, and the cyclic prefix symbol is used to transmit the first data.

In an embodiment of the present disclosure, the obtaining module 1302 is specifically configured to: obtain configuration information sent by the network device; determine the number of cyclic prefix symbols in each group of PDSCH scheduling symbols according to the configuration information; The data to be transmitted is obtained from the received target data.

In an embodiment of the present disclosure, the obtaining module 1302 is specifically configured to: obtain the first data to be transmitted from the data symbols corresponding to multiple network devices according to the first starting position of the first data to be transmitted in the target data and the length of the OFDM symbol transmit data; obtain the second data to be transmitted from the second cyclic prefixes corresponding to multiple network devices according to the multipath length parameter, and the multipath length parameter is used to indicate the data transmission delay of different network devices; according to the first data to be transmitted and the second to-be-transmitted data to determine the to-be-transmitted data.

In an embodiment of the present disclosure, the obtaining module 1302 is specifically configured to: obtain the second data to be transmitted from the second cyclic prefixes corresponding to multiple network devices according to the multipath length parameter, including: according to the multipath length parameter, the first The length of a cyclic prefix, the length of the OFDM symbol and the first starting position determine the second starting position of the second data to be transmitted in the second cyclic prefix corresponding to each network device; according to the second starting position and the OFDM symbol Length to obtain the second data to be transmitted corresponding to multiple network devices.

It should be noted here that the above-mentioned device provided by the present disclosure can correspondingly implement all the method steps implemented by the terminal device in the above-mentioned method embodiments, and can achieve the same technical effect. The same parts and beneficial effects of the embodiments are described in detail.

FIG. 14 is a schematic structural diagram of a network device according to an embodiment of the present disclosure. The terminal is the first terminal. As shown in FIG. 14 , the network device 1400 includes: a memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; wherein, in FIG. 14 , The bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1402 and various circuits of memory represented by memory 1403 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1401 may be multiple elements, ie, including transmitters and receivers, providing means for communicating with various other devices over transmission media, including wireless channels, wired channels, fiber optic 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.

In one embodiment of the present disclosure, the processor 1402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (Field-Programmable Gate Array, FPGA) or complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor can also use a multi-core architecture. The processor 1402 is configured to execute any method related to the first terminal provided by the embodiments of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory 1403 . The processor and memory may also be physically separated.

Specifically, the processor 1402 is configured to read the computer program in the memory and perform the following operations: according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol, determine the first number of the data to be transmitted. The length of the second cyclic prefix; the target data is generated according to the length of the second cyclic prefix and the data to be transmitted; the target data is sent to the terminal device.

It should be noted here that the above-mentioned network device provided by the present disclosure can implement all the method steps implemented by the network device in the above-mentioned method embodiments, and can achieve the same technical effect. The same parts and beneficial effects of the examples will be described in detail.

FIG. 15 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. The terminal device is within the coverage of multiple network devices, and the terminal device includes: a memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; wherein, in FIG. 15 , the bus architecture may include Any number of interconnected buses and bridges, specifically one or more processors represented by processor 1502 and various circuits of memory represented by memory 1503 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1501 may be multiple elements, ie, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like. 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 operations. The processor 1502 may be a CPU, an ASIC, an FPGA or a CPLD, and the processor may also adopt a multi-core architecture. The processor 1502 invokes the computer program stored in the memory 1503 to execute any method of the master positioning terminal provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and memory may also be physically separated.

Specifically, the processor 1502 is configured to read the computer program in the memory and perform the following operations: receive target data sent by multiple network devices; obtain data to be transmitted from the received target data; wherein, multiple network devices send The target data is the same as the target data. The target data is generated by the network device based on the length of the second cyclic prefix and the data to be transmitted. The length of the second cyclic prefix is the length of the first cyclic prefix and the orthogonal frequency division corresponding to the subcarrier interval by the network device. The length of the multiplexed OFDM symbols is determined.

In an embodiment of the present disclosure, obtaining the data to be transmitted from the received target data includes: obtaining the first data from the data symbol according to the first starting position of the first data to be transmitted and the length of the OFDM symbol in the target data. 1. Data to be transmitted; obtain the second data to be transmitted from the second cyclic prefix according to the multipath length parameter, the multipath length parameter is used to indicate the data transmission delay of different network devices; according to the first data to be transmitted and the second to be transmitted To transmit data, determine the data to be transmitted.

In an embodiment of the present disclosure, obtaining the second data to be transmitted from the second cyclic prefix according to the multipath length parameter includes: according to the multipath length parameter, the length of the first cyclic prefix, the length of the OFDM symbol, and the first The starting position is determined, and the second starting position of the second data to be transmitted is determined; according to the second starting position and the length of the OFDM symbol, the second data to be transmitted is obtained.

It should be noted here that the above-mentioned terminal device provided by the present disclosure can implement all the method steps implemented by the terminal device in the above-mentioned method embodiments, and can achieve the same technical effect, and the implementation of the method in this embodiment and the method will not be performed here. The same parts and beneficial effects of the examples will be described in detail.

It should be noted that the division of units in the embodiments of the present disclosure is schematic, and is only a logical function division, and other division methods may be used in actual implementation. In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

If the above-mentioned integrated units are implemented in the form of software functional units and sold or used as independent products, they may be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the part that contributes to the prior art, or all or part of the technical solutions, and the computer software product is stored in a storage medium , including several instructions for causing 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 in the various embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

On the network device side, an embodiment of the present disclosure provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to make the processor execute the method related to the network device provided by the embodiment of the present disclosure , so that the processor can implement all the method steps implemented by the network device in the above method embodiments, and can achieve the same technical effects, and the same parts and beneficial effects in this embodiment are not described in detail here.

On the side of the terminal device, an embodiment of the present disclosure provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to make the processor execute the method related to the terminal device provided by the embodiment of the present disclosure , so that the processor can implement all the method steps implemented by the terminal device in the above method embodiments, and can achieve the same technical effect. The processor-readable storage medium may be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state disk (SSD)), and the like.

On the network device side, an embodiment of the present disclosure further provides a computer program product containing instructions, the computer program is stored in a storage medium, at least one processor can read the computer program from the storage medium, and at least one processor executes the computer program The program can implement all the method steps implemented by the network device in the above method embodiments, and can achieve the same technical effects, and the same parts and beneficial effects in this embodiment as the method embodiments will not be described in detail here.

On the terminal device side, an embodiment of the present disclosure further provides a computer program product containing instructions, the computer program is stored in a storage medium, at least one processor can read the computer program from the storage medium, and at least one processor executes the computer program The program can implement all the method steps implemented by the terminal device in the above method embodiments, and can achieve the same technical effects, and the same parts and beneficial effects in this embodiment as the method embodiments will not be described in detail here.

An embodiment of the present disclosure also provides a communication system, including a network device and a terminal device. The network device can perform all the method steps performed by the network device in the above method embodiments, and can achieve the same technical effect, and the terminal device can perform all the method steps performed by the terminal device in the above method embodiments, and can achieve the same technology Effect. The same parts and beneficial effects in this embodiment as in the method embodiment will not be described in detail here.

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

The present disclosure is described with reference to schematic diagrams and/or block diagrams of signaling interactions of methods, apparatuses, and computer program products according to embodiments of the present disclosure. It will be understood that each process and/or block in the signaling interaction diagrams and/or block diagrams, and combinations of processes and/or blocks in the signaling interaction diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flows and/or a block or blocks of a block diagram of a signaling interaction diagram.

These processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction device implements the function specified in one flow or multiple flows and/or one block or multiple blocks of the block diagram of the signaling interaction diagram.

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

It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit and scope of the present disclosure. Thus, provided that these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to cover such modifications and variations.

Claims

A data processing method, characterized in that it is applied to a network device, the data processing method comprising: determining 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 the length of the second cyclic prefix; generate target data according to the length of the second cyclic prefix and the data to be transmitted; and send the target data to the terminal device.
The data processing method according to claim 1, wherein 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 OFDM symbol comprises: determining: The preset number of OFDM symbols included in the second cyclic prefix; according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol, determine the second cyclic prefix of the data to be transmitted. length.
The data processing method according to claim 2, wherein the second cyclic prefix of the data to be transmitted is determined according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol The length of the OFDM symbols includes: determining the total length of the OFDM symbols included in the second cyclic prefix as the first length according to the preset number and the length of the OFDM symbols; The length of a cyclic prefix, determine the total length of the first cyclic prefix included in the second cyclic prefix as the second length; determine the sum of the first length and the second length as the length of the second cyclic prefix .
The data processing method according to any one of claims 1 to 3, wherein the generating target data according to the length of the second cyclic prefix and the data to be transmitted comprises: according to the second cyclic prefix the length of the cyclic prefix and the data to be transmitted, determine the first data corresponding to the second cyclic prefix; generate target data according to the first data and the data to be transmitted, and the target data includes the first data data and the data to be transmitted.
The data processing method according to claim 4, wherein the sending the target data to the terminal equipment comprises: sending multiple groups of PDSCH scheduling symbols to the terminal equipment, and each group of the PDSCH scheduling symbols is used for transmission One piece of the target data, each group of the PDSCH scheduling symbols includes a data symbol and a cyclic prefix symbol, where the data symbol is used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.
The data processing method according to claim 5, wherein the data processing method further comprises: sending configuration information to the terminal device, wherein the configuration information is used to indicate the cycle in each group of the PDSCH scheduling symbols The number of prefix symbols.
The data processing method according to claim 6, wherein the configuration information is sent to the terminal device through at least one of the following messages: a broadcast message, a radio resource control message, a control message of a medium access control layer, and a physical layer Scheduling signaling indication messages.
The data processing method according to claim 5, further comprising: sending time-domain scheduling signaling to the terminal device, wherein the time-domain scheduling signaling is used to indicate multiple groups of the PDSCH The starting symbol of the cyclic prefix symbol in the scheduling symbols and the number of symbols used to transmit the target data; or, the scheduling signaling is used to indicate the starting symbols of the data symbols in multiple groups of the PDSCH scheduling symbols and the symbol number of the data symbols.
The data processing method according to claim 5, wherein the data processing method further comprises: sending a multipath length parameter of the network device to the terminal device, where the multipath length parameter is used to indicate the The terminal device acquires the data to be transmitted according to the multipath length parameter.
A data processing method, characterized in that it is applied to a terminal device, and the terminal device is within the coverage of a plurality of network devices, the data processing method comprising: receiving target data sent by a plurality of the network devices; In the received target data, the data to be transmitted is obtained; wherein, the target data sent by a plurality of the network devices are the same, and the target data is generated by the network device based on the length of the second cyclic prefix and the data to be transmitted, The length of the second cyclic prefix is determined by the network device according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol.
The data processing method according to claim 10, wherein each of the target data includes first data corresponding to the data to be transmitted and the second cyclic prefix, and the first data is based on the first data. Determined by the length of the second cyclic prefix and the data to be transmitted, the receiving multiple target data sent by the network device includes:

Receive multiple groups of PDSCH scheduling symbols sent by each of the network devices, each group of the PDSCH scheduling symbols is used to transmit one of the target data, and each group of the PDSCH scheduling symbols includes a data symbol and a cyclic prefix symbol, and the data symbol used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.
The data processing method according to claim 11, wherein the obtaining the data to be transmitted from the received target data comprises: obtaining configuration information sent by the network device; determining each group according to the configuration information The number of the cyclic prefix symbols in the PDSCH scheduling symbols; according to the number of the cyclic prefix symbols, the data to be transmitted is obtained from the received target data.
The data processing method according to claim 12, wherein the obtaining the data to be transmitted from the received target data according to the number of the cyclic prefix symbols comprises: obtaining a time domain sent by the network device scheduling signaling; according to the time-domain scheduling signaling, determine the number of start symbols and the data symbols in multiple groups of the PDSCH scheduling symbols, where the start symbols are the cyclic prefix symbols The start symbol or the start symbol in the data symbols; according to the number of the cyclic prefix symbols, the start symbol and the number of symbols, determine the data symbol used to transmit the data to be transmitted; The to-be-transmitted data corresponding to the data symbol is acquired from the data symbol for transmitting the to-be-transmitted data.
The data processing method according to claim 11, wherein the obtaining the data to be transmitted from the received target data comprises: according to the first starting position and the all data of the first data to be transmitted in the target data According to the length of the OFDM symbol, the first data to be transmitted is obtained from the data symbol; the second data to be transmitted is obtained from the second cyclic prefix according to the multipath length parameter, and the multipath length parameter is used to indicate different network devices. The data transmission delay is determined according to the first to-be-transmitted data and the second to-be-transmitted data to determine the to-be-transmitted data.
The data processing method according to claim 14, wherein the obtaining the second data to be transmitted from the second cyclic prefix according to the multipath length parameter comprises: according to the multipath length parameter, the first The length of the cyclic prefix, the length of the OFDM symbol, and the first starting position determine the second starting position of the second data to be transmitted; according to the second starting position and the length of the OFDM symbol, Obtain the second data to be transmitted.
A data processing apparatus, characterized in that it is applied to a network device, and the data processing apparatus includes: a determination module configured to, according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol, , determine the length of the second cyclic prefix of the data to be transmitted; the processing module is used to generate target data according to the length of the second cyclic prefix and the data to be transmitted; the sending module is used to send the target data to the terminal device data.
The data processing apparatus according to claim 16, wherein the determining module is specifically configured to: determine a preset number of OFDM symbols included in the second cyclic prefix; The length of the first cyclic prefix and the length of the OFDM symbol determine the length of the second cyclic prefix of the data to be transmitted.
The data processing apparatus according to claim 17, wherein the determining module is specifically configured to:

According to the preset number and the length of the OFDM symbols, the total length of the OFDM symbols included in the second cyclic prefix is determined as the first length; according to the preset number and the length of the first cyclic prefix , determining the total length of the first cyclic prefix included in the second cyclic prefix as the second length; and determining the sum of the first length and the second length as the length of the second cyclic prefix.
A data processing apparatus, which is characterized in that it is applied to terminal equipment, and the terminal equipment is within the coverage of multiple network equipment, and the data processing apparatus includes: a receiving module for receiving data sent by multiple network equipment. target data; the acquisition module is used to obtain the data to be transmitted from the received target data;

The target data sent by a plurality of the network devices is the same, and the target data is generated by the network device based on the length of the second cyclic prefix and the data to be transmitted, and the length of the second cyclic prefix is the length of the It is determined by the network device according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol.
The data processing apparatus according to claim 19, wherein each of the target data includes first data corresponding to the data to be transmitted and the second cyclic prefix, and the first data is based on the first data. The length of the second cyclic prefix and the data to be transmitted are determined;

The receiving module is specifically configured to: receive multiple groups of PDSCH scheduling symbols sent by each of the network devices, each group of the PDSCH scheduling symbols is used to transmit one piece of the target data, and each group of the PDSCH scheduling symbols includes data symbols and A cyclic prefix symbol, where the data symbol is used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.
The data processing device according to claim 20, wherein the acquisition module is specifically used for:

Obtain the configuration information sent by the network device; determine the number of the cyclic prefix symbols in each group of the PDSCH scheduling symbols according to the configuration information; according to the number of the cyclic prefix symbols, from the received target data Get the data to be transmitted.
A network device is characterized by comprising: a memory for storing computer programs; a transceiver for sending and receiving data under the control of a processor; a processor for reading the computer program in the memory and executing the following Operation: determine 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 spacing and the length of the OFDM symbol; according to the length of the second cyclic prefix and the length of the For the data to be transmitted, generate target data; and send the target data to the terminal device.
The network device according to claim 22, wherein 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 OFDM symbol comprises: determining the length of the second cyclic prefix of the data to be transmitted. the preset number of OFDM symbols included in the second cyclic prefix; according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol, determine the length of the second cyclic prefix of the data to be transmitted .
The network device according to claim 23, wherein the determining the second cyclic prefix of the data to be transmitted is determined according to the preset number, the length of the first cyclic prefix and the length of the OFDM symbol The length includes: determining, according to the preset number and the length of the OFDM symbols, the total length of the OFDM symbols included in the second cyclic prefix as the first length; according to the preset number and the first length For the length of the cyclic prefix, the total length of the first cyclic prefix included in the second cyclic prefix is determined as the second length; the sum of the first length and the second length is determined as the length of the second cyclic prefix.
The network device according to any one of claims 22 to 24, wherein the generating the target data according to the length of the second cyclic prefix and the data to be transmitted comprises: according to the second cyclic prefix the length of the prefix and the data to be transmitted, determine the first data corresponding to the second cyclic prefix; generate target data according to the first data and the data to be transmitted, and the target data includes the first data and the data to be transmitted.
The network device according to claim 25, wherein the sending the target data to the terminal device comprises: sending multiple groups of PDSCH scheduling symbols to the terminal device, and each group of the PDSCH scheduling symbols is used to transmit one For the target data, each group of the PDSCH scheduling symbols includes a data symbol and a cyclic prefix symbol, where the data symbol is used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.
The network device according to claim 26, wherein the processor is further configured to perform the following operation: send configuration information to the terminal device, where the configuration information is used to indicate that each group of PDSCH scheduling symbols The number of the cyclic prefix symbols.
The network device according to claim 27, wherein sending the configuration information to the terminal device comprises: sending the configuration information to the terminal device through at least one of the following messages: a broadcast message, a radio resource control message, The control message of the medium access control layer and the physical layer scheduling signaling indication message.
The network device according to claim 26, wherein the processor is further configured to perform the following operation: send time-domain scheduling signaling to the terminal device, where the time-domain scheduling signaling is used to indicate multiple groups of The starting symbol of the cyclic prefix symbol in the PDSCH scheduling symbol and the number of symbols used to transmit the target data; or the scheduling signaling is used to indicate the number of the data symbols in the PDSCH scheduling symbols The start symbol and the number of symbols for the data symbol.
The network device according to any one of claims 26, wherein the processor is further configured to perform the following operation: send a multipath length parameter of the network device to the terminal device, the multipath The length parameter is used to instruct the terminal device to obtain the data to be transmitted according to the multipath length parameter.
A terminal device, the terminal device is within the coverage of multiple network devices, the terminal device comprises: a memory for storing computer programs; a transceiver for sending and receiving data under the control of a processor; the processing a device for reading the computer program in the memory and performing the following operations: receiving target data sent by a plurality of the network devices; obtaining the data to be transmitted from the received target data;

The target data sent by a plurality of the network devices is the same, and the target data is generated by the network device based on the length of the second cyclic prefix and the data to be transmitted, and the length of the second cyclic prefix is the length of the It is determined by the network device according to the length of the first cyclic prefix corresponding to the subcarrier interval and the length of the OFDM symbol.
The terminal device according to claim 31, wherein each of the target data includes first data corresponding to the data to be transmitted and the second cyclic prefix, and the first data is based on the second cyclic prefix. Determined by the length of the cyclic prefix and the data to be transmitted, the receiving multiple target data sent by the network device includes:

Receive multiple groups of PDSCH scheduling symbols sent by each of the network devices, each group of the PDSCH scheduling symbols is used to transmit one of the target data, and each group of the PDSCH scheduling symbols includes a data symbol and a cyclic prefix symbol, and the data symbol used to transmit the data to be transmitted, and the cyclic prefix symbol is used to transmit the first data.
The terminal device according to claim 32, wherein the obtaining the data to be transmitted from the received target data comprises: obtaining configuration information sent by the network device; The number of the cyclic prefix symbols in the PDSCH scheduling symbols; according to the number of the cyclic prefix symbols, the data to be transmitted is obtained from the received target data.
The terminal device according to claim 33, wherein the acquiring the data to be transmitted from the received target data according to the number of the cyclic prefix symbols comprises: acquiring a time domain schedule sent by the network device signaling; according to the time-domain scheduling signaling, determine the number of start symbols and the data symbols in multiple groups of the PDSCH scheduling symbols, wherein the start symbols are the start symbols of the cyclic prefix symbols starting symbol or the starting symbol in the data symbol; according to the number of the cyclic prefix symbols, the starting symbol and the number of symbols, determine the data symbol used to transmit the data to be transmitted; The data to be transmitted corresponding to the data symbol is acquired from the data symbol of the data to be transmitted.
The terminal device according to claim 32, wherein the obtaining the data to be transmitted from the received target data comprises: according to the first starting position of the first data to be transmitted in the target data and the The length of the OFDM symbol, the first data to be transmitted is obtained from the data symbol; the second data to be transmitted is obtained from the second cyclic prefix according to the multipath length parameter, and the multipath length parameter is used to indicate different network devices. Data transmission delay; the data to be transmitted is determined according to the first data to be transmitted and the second data to be transmitted.
The terminal device according to claim 35, wherein the obtaining the second data to be transmitted from the second cyclic prefix according to the multipath length parameter comprises: according to the multipath length parameter, the first cyclic prefix The length of the prefix, the length of the OFDM symbol, and the first starting position determine the second starting position of the second data to be transmitted; according to the second starting position and the length of the OFDM symbol, obtain The second data to be transmitted.
A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program, and the computer program is used to cause a processor to perform the data processing described in any one of claims 1 to 9 The method or the data processing method of any one of claims 10 to 15.
A computer program product, characterized by comprising: a computer program, characterized in that, when the computer program is executed by a processor, the data processing method according to any one of claims 1 to 9 or claims 10 to 10 is implemented. The data processing method of any one of 15.