WO2022150985A1

WO2022150985A1 - Repeat transmission method, electronic device, and storage medium

Info

Publication number: WO2022150985A1
Application number: PCT/CN2021/071326
Authority: WO
Inventors: 崔胜江; 徐伟杰
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-07-21
Also published as: CN116438886A

Abstract

Disclosed in the present application is a repeat transmission method, comprising: a terminal device determines a time slot for repeat transmission, the time slot comprising a flexible symbol and/or a symbol in the same direction as the repeat transmission; and the terminal device executes symbol mapping within the time slot. Also disclosed in the present application are another repeat transmission method, an electronic device, and a storage medium.

Description

A kind of repeated transmission method, electronic device and storage medium

technical field

The present application relates to the field of wireless communication technologies, and in particular, to a repeated transmission method, an electronic device, and a storage medium.

Background technique

In the New Radio (NR) system, in order to improve the reliability of data transmission, a data repeat transmission mechanism is introduced. Therefore, how to improve the coverage performance of repeated data transmission is a consistent goal.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method for repeated transmission, an electronic device, and a storage medium, which can improve the coverage performance of repeated data transmission.

In a first aspect, an embodiment of the present application provides a method for repeated transmission, including: a terminal device determining a time slot for repeated transmission, the time slot including flexible symbols and/or symbols with the same direction as the repeated transmission; the terminal device Symbol mapping is performed at the time slot.

In a second aspect, an embodiment of the present application provides a method for repeated transmission, including: a network device determining a time slot for repeated transmission, the time slot including flexible symbols and/or symbols with the same direction as the repeated transmission; the network device Symbol mapping is performed at the time slot.

In a third aspect, an embodiment of the present application provides a terminal device, the terminal device includes: a first processing unit configured to determine a time slot for repeated transmission, where the time slot includes a flexible symbol and/or a direction and the repeated transmission Same symbols; symbol mapping is performed on the slot.

In a fourth aspect, an embodiment of the present application provides a network device, the network device includes: a second processing unit configured to determine a time slot for repeated transmission, the time slot including flexible symbols and/or directions and the repeated transmission Same symbols; symbol mapping is performed on the slot.

In a fifth aspect, an embodiment of the present application provides a terminal device, including a processor and a memory for storing a computer program that can be executed on the processor, wherein the processor is configured to execute the above-mentioned terminal when the computer program is executed. The steps of the repeated transmission method performed by the device.

In a sixth aspect, an embodiment of the present application provides a network device, including a processor and a memory for storing a computer program that can be run on the processor, wherein the processor is configured to execute the above network when running the computer program. The steps of the repeated transmission method performed by the device.

In a seventh aspect, an embodiment of the present application provides a chip, including: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes the above-mentioned repeated transmission method executed by the terminal device.

In an eighth aspect, an embodiment of the present application provides a chip, including: a processor for invoking and running a computer program from a memory, so that a device installed with the chip executes the repeated transmission method performed by the foregoing network device.

In a ninth aspect, an embodiment of the present application provides a storage medium storing an executable program, and when the executable program is executed by a processor, the above-mentioned repeated transmission method performed by a terminal device is implemented.

In a tenth aspect, an embodiment of the present application provides a storage medium storing an executable program, and when the executable program is executed by a processor, the above-mentioned method for repeated transmission performed by a network device is implemented.

In an eleventh aspect, an embodiment of the present application provides a computer program product, including computer program instructions, and the computer program instructions cause a computer to execute the above-mentioned repeated transmission method executed by the terminal device.

In a twelfth aspect, an embodiment of the present application provides a computer program product, including computer program instructions, the computer program instructions causing a computer to execute the above-mentioned repeated transmission method executed by the network device.

In a thirteenth aspect, an embodiment of the present application provides a computer program, where the computer program enables a computer to execute the repeated transmission method executed by the terminal device.

In a fourteenth aspect, an embodiment of the present application provides a computer program, where the computer program causes a computer to execute the method for repeated transmission performed by the foregoing network device.

The repeated transmission method, electronic device, and storage medium provided by the embodiments of the present application include: a terminal device determines a time slot for repeated transmission, where the time slot includes flexible symbols and/or symbols with the same direction as the repeated transmission; the terminal The device performs symbol mapping at the time slot. In this way, by using flexible time slots for repeated transmission, the use efficiency of spectrum can be improved, time-frequency resources can be effectively used, the problem of insufficient time slots for effective repeated transmission during repeated data transmission is solved, and the repeated transmission of data can be improved. coverage performance.

Description of drawings

1 is a schematic diagram of a terminal device transmitting HARQ-ACK feedback corresponding to a PDSCH according to an embodiment of the present application;

2 is a schematic diagram of a network device scheduling PDSCH through DCI according to an embodiment of the present application;

3 is a schematic diagram of a network device scheduling PUSCH through DCI according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a network device repeatedly transmitting PDSCH according to an embodiment of the present application

Fig. 5 is a kind of time slot intention under the Type A resource allocation mode of the application;

6 is a schematic diagram of a time slot under the Type B resource allocation mode of the application;

7a is a schematic diagram of a time slot structure including an uplink and downlink conversion point in the present application;

FIG. 7b is another schematic diagram of the time slot structure including one uplink and downlink transition point of the present application

7c is a schematic diagram of a time slot structure including two uplink and downlink conversion points in the present application;

FIG. 7d is another schematic diagram of the time slot structure including two uplink and downlink conversion points in the present application;

Fig. 8 is a kind of optional schematic diagram of repeated transmission;

9 is a schematic diagram of the composition and structure of a communication system according to an embodiment of the present application;

FIG. 10 is a schematic diagram of an optional processing flow of the repeated transmission method provided by the embodiment of the present application;

FIG. 11a is an optional schematic diagram of mapping modulation symbols to resource elements corresponding to the flexible time slots based on the first sequence according to an embodiment of the present application;

FIG. 11b is another optional schematic diagram of mapping modulation symbols to resource elements corresponding to the flexible time slots based on the first sequence according to an embodiment of the present application;

FIG. 12 is a schematic diagram of puncturing processing of resource elements corresponding to flexible time slots not used for repeated transmission according to an embodiment of the present application;

FIG. 13 is a schematic diagram of another optional processing flow of the repeated transmission method provided by the embodiment of the present application;

FIG. 14 is a schematic schematic diagram of a detailed optional processing flow of the repeated transmission method provided by the embodiment of the present application;

15 is a schematic diagram of a flexible timeslot RE provided by an embodiment of the present application;

FIG. 16 is a schematic structural diagram of an optional composition of a terminal device provided by an embodiment of the present application;

FIG. 17 is a schematic diagram of an optional composition structure of a network device provided by an embodiment of the present application;

FIG. 18 is a schematic structural diagram of a hardware composition of an electronic device provided by an embodiment of the present application.

Detailed ways

In order to understand the features and technical contents of the embodiments of the present application in more detail, the implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Before describing the embodiments of the present application, relevant contents are briefly described.

In the NR system, in order to improve the flexibility of network equipment scheduling, especially for services with short delay requirements such as Ultra Reliable Low Latency Communications (Ultra Reliable Low Latency Communications, URLLC, URLLC), the timing relationship of data transmission is established. , when the network device instructs the downlink authorization to schedule the physical downlink shared channel (PDSCH) transmission through the downlink control information (Downlink Control Information, DCI), after receiving the PDSCH, the terminal device needs to feedback acknowledgment/non-acknowledgment (ACK/ NACK). In the DCI of the downlink grant, the time slot position and physical uplink control channel (Physical Uplink Control CHannel, PUCCH) resource for transmitting the ACK/NACK feedback information corresponding to the PDSCH will be further indicated. Wherein, the time domain offset k1 between the PDSCH scheduled by the DCI and the hybrid automatic repeat request feedback (Hybrid Automatic Repeat reQuest ACK, HARQ-ACK) corresponding to the PDSCH is represented; as shown in Figure 1, k1 is 5, If the terminal device receives the DCI in time slot (Slot) 1, and the DCI is used to schedule the PDSCH transmission in Slot 3, the terminal device Slot 8 transmits the HARQ-ACK feedback corresponding to the PDSCH. The time domain offset between the DCI and the PDSCH scheduled by the DCI is represented by k0; as shown in FIG. 2 , k0 is 2. If the terminal device receives the DCI in slot 1, the terminal device receives the PDSCH scheduled by the DCI in slot 3. The time domain offset between the DCI and the PUSCH scheduled by the DCI is represented by k2; as shown in FIG. 3 , k2 is 4. If the terminal device receives the DCI in Slot4, the terminal device receives the PUSCH in Slot8. The time domain offset between the HARQ feedback corresponding to the PDSCH sent by the terminal device and the PDSCH retransmitted by the network device is represented by k3. As shown in Figure 4, k3 is 2. If the terminal device sends the HARQ feedback corresponding to the PDSCH in Slot5, the terminal device The retransmission of the PDSCH is received at Slot7. If the terminal equipment feeds back ACK, the PDSCH transmission may be terminated, or a new PDSCH transmission may be started. If the terminal equipment feeds back NACK, the HARQ retransmission of the PDSCH is performed, and during the HARQ retransmission, the repeated transmission of the PDSCH may also be performed.

The time domain resource allocation of the NR system includes two modes, namely, the TypeA resource allocation mode and the TypeB resource allocation mode.

Among them, the Type A resource allocation mode may also be called a slot-based (Slot Based) scheduling mode, and the scheduling behavior in the Type A resource allocation mode is performed in units of time slots. As shown in Figure 5, PDSCH and PUSCH occupy 14 Orthogonal Frequency Division Multiplexing (OFDM) or 12 OFDM symbols; if the Cyclic Prefix (CP) is a conventional CP, PDSCH and PUSCH occupy 14 OFDM symbols; if the CP is an extended CP, the PDSCH and PUSCH occupy 12 OFDM symbols.

The Type B resource allocation mode can also be called a mini-slot based (Mini-slot Based) scheduling mode, and the scheduling behavior in the Type B resource allocation mode is performed in units of OFDM symbols. As shown in Figure 6, if the CP is a conventional CP, the PDSCH occupies 2 to 13 OFDM symbols; if the CP is an extended CP, the PDSCH occupies 2/4/6 OFDM symbols; if the CP is a conventional CP, the PUSCH occupies The number of OFDM symbols may be 1 to 14, and if the CP is an extended CP, the number of OFDM symbols occupied by the PDSCH is 1 to 12.

In the NR system, a start and length indicator (Start and Length Indicator Value, SLIV) is also defined, which is used to indicate the start symbol position and duration of the PDSCH or PUSCH. In the NR system, a flexible time slot structure is also introduced, that is, each symbol in a time slot is not only fixedly configured as an uplink symbol and a downlink symbol, but also a flexible (Flexible) symbol; wherein, the flexible symbol has the following characteristics : 1) The symbol direction of flexible symbols is undetermined, and flexible symbols can be changed to downlink symbols or uplink symbols through other signaling; 2) Flexible symbols can also be reserved for future use for forward compatibility; 3 ) flexible symbol is used for the transmission and reception conversion of terminal equipment, and the terminal equipment completes the transmission and reception conversion within this symbol; at this time, the function of flexible symbol is similar to the guard interval (Guard Period, GP) symbol.

A variety of flexible time slot structures are defined in the NR system, including all uplink time slots, all downlink time slots, all flexible time slots, and time slot structures with different combinations of uplink symbols, downlink symbols and flexible symbols (which can be called flexible time slots. slot, or special time slot); each time slot structure corresponds to a time slot format index, and one time slot may include one or two uplink and downlink conversion points. The time slot structure including one uplink and downlink conversion point means that in one time slot, no downlink (Down Link, DL) symbols or uplink (Up Link, UL) symbols are included between any two flexible symbols. A schematic diagram of a time slot structure including an uplink and downlink conversion point, as shown in Figure 7a, a time slot includes 9 DL symbols, 3 flexible symbols and 2 UL symbols, and the positions of the 3 flexible symbols are adjacent, There is an uplink and downlink conversion point in the 3 flexible symbols. Another schematic diagram of the time slot structure including an uplink and downlink conversion point, as shown in Figure 7b, a time slot includes 2 DL symbols, 3 flexible symbols and 14 UL symbols, and the positions of the 3 flexible symbols are adjacent , there is an uplink and downlink conversion point in the three flexible symbols. The time slot structure including two uplink and downlink transition points means that in one time slot, DL symbols and UL symbols are included between two flexible symbols. A schematic diagram of the time slot structure including two uplink and downlink conversion points, as shown in Figure 7c, a time slot includes 10 DL symbols, 2 flexible symbols and 2 UL symbols, in the first 7 time slots and the last 7 The time slots respectively include DL symbols, flexible symbols and UL symbols, that is, there is an uplink and downlink conversion point respectively in the flexible symbols of the first seven time slots and the last seven time slots. Another schematic diagram of the time slot structure including two uplink and downlink transition points, as shown in Figure 7d, a time slot includes 4 DL symbols, 4 flexible symbols and 6 UL symbols, and the first 7 time slots and the latter In the seven time slots, DL symbols, flexible symbols and UL symbols are respectively included, that is, there is an uplink and downlink conversion point in the flexible symbols of the first seven time slots and the last seven time slots, respectively.

The symbol distribution table in a time slot in the NR system can be shown in Table 1 below, where D represents downlink symbols, U represents uplink symbols, and F represents flexible symbols.

Table 1. Symbol distribution table in one slot in NR system

The repeated transmission of data in the NR system is briefly described below. In the NR system, for the downlink data transmission of PDSCH and the uplink data transmission of PUSCH, the PDSCH aggregation factor (pdsch-AggregationFactor) and the PUSCH aggregation factor (pusch-AggregationFactor) are respectively defined in Radio Resource Control (RRC). ) two parameters, which are respectively used to control the number of repeated transmissions of PDSCH and PUSCH. Among them, the number of times of repeated transmission of PDSCH and PUSCH is 1 by default; if there is a pdsch-Aggregation Factor and/or a pusch-Aggregation Factor. Then both pdsch-Aggregation Factor and pusch-Aggregation Factor can be configured as 2 or 4 or 8 times.

When pdsch-AggregationFactor>1 or pusch-AggregationFactor>1, the same symbol allocation scheme (specifically determined by SLIV) will be used in pdsch-AggregationFactor and pusch-AggregationFactor consecutive time slots, and the same transport block will be sent multiple times , the redundancy version of the transport block sent each time (taking the TypeA resource allocation mode as an example) is shown in Table 2 and Table 3 below:

Table 2. Redundancy version settings when pdsch-AggregationFactor>1

Table 3. Redundancy version settings when pusch-AggregationFactor > 1

In the prior art, an optional schematic diagram of repeated transmission is shown in FIG. 8 . Taking the repeated transmission of PUSCH as an example, pusch-AggregationFactor=4, in pusch-AggregationFactor consecutive slots, when the available symbols of the slot are not When the requirements are met (such as slot2), the repeated transmission of the slot is ignored. Therefore, if the repeated transmission of data in multiple time slots is combined with flexible time slots, it is necessary to determine which symbols or slots can perform repeated transmission of data.

In the NR system, before data is transmitted, rate matching and symbol mapping of Low Density Parity Check Codes (LDPC) need to be performed on the data; wherein, the rate matching of LDPC includes bit selection and bit interleaving. part. The input bit sequence of rate matching can be expressed as d ₀ , d ₁ , d ₂ ...... d _N-1 , and the sequence is the coding result obtained based on the entire BG. The output bit sequence of rate matching can be expressed as f ₀ , f ₁ , f ₂ . . . f _E-1 . Bit selection refers to inputting the coding results d ₀ , d ₁ , d ₂ ...... d _N-1 into the circular buffer area of length N _cb . According to the scheduled RE resources and modulation mode, the number of bits G that can be carried in a slot can be determined, and the number of bits E of each segmented code block used for transmission is determined based on G and the number C of code blocks actually transmitted. According to E and the identifier (ID) of the cyclic redundancy version (RV) sent each time, the coded bit sequence e ₀ , e ₁ , e ₂ . . . e _E-1 of length E is extracted from the circular buffer area. Bit interleaving refers to interleaving e ₀ , e ₁ , e ₂ ...... e _E-1 according to the modulation order Q _m to obtain interleaved sequences f ₀ , f ₁ , f ₂ ...... f _E-1 . Then, perform modulation and symbol mapping on the interleaved sequences f ₀ , f ₁ , f ₂ ...... f _E-1 .

In the process of implementing the data repeated transmission method, the applicant found that the number of data repeated transmissions is semi-statically configured, and if repeated transmissions are performed in the flexible time slot structure, repeated transmissions in some slots may be ignored; therefore, in some In scenarios (such as TDD systems), the configured number of repeated transmissions may not achieve the desired coverage enhancement effect; the reason may be that the actual number of repeated transmissions is less than the configured number of Aggregation Factors, or the repeated transmissions are not actually performed. For example, if the frame structure is DDDSU, that is, three consecutive downlink time slots, one flexible time slot and one uplink time slot; the number of times of PUSCH repeated transmission is configured to be 4, then it can only be executed once in four consecutive slots. Effective repeated transmission, that is, the configured pusch-AggregationFactor does not play the role of repeated transmission; therefore, the system coverage limitation of the TDD frame structure is too large, which affects the deployment efficiency of TDD. Limited by the configuration of the AggregationFactor and the actual frame structure, there is actually a waste of available symbols in the flexible time slot, and the FDD system configured with the flexible frame structure will also be subject to the same restrictions.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE Time division duplex (TDD) systems, advanced long term evolution (LTE-A) systems, new radio (NR) systems, evolution systems of NR systems, LTE on unlicensed bands (LTE-based access to unlicensed spectrum, LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed frequency bands, universal mobile telecommunication system (UMTS), global Worldwide interoperability for microwave access (WiMAX) communication systems, wireless local area networks (WLAN), wireless fidelity (WiFi), next-generation communication systems or other communication systems, etc.

The system architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The network equipment involved in the embodiments of this application may be a common base station (such as a NodeB or eNB or gNB), a new radio controller (NR controller), a centralized network element (centralized unit), a new radio base station, Remote radio module, micro base station, relay, distributed unit (distributed unit), reception point (transmission reception point, TRP), transmission point (transmission point, TP) or any other equipment. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For the convenience of description, in all the embodiments of this application, the above-mentioned apparatuses for providing wireless communication functions for terminal equipment are collectively referred to as network equipment.

In this embodiment of the present application, the terminal device may be any terminal, for example, the terminal device may be user equipment of machine type communication. That is to say, the terminal device can also be called user equipment UE, mobile station (mobile station, MS), mobile terminal (mobile terminal), terminal (terminal), etc. network, RAN) communicates with one or more core networks, for example, the terminal device can be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal device can also be a portable, pocket-sized , handheld, computer built-in or vehicle mounted mobile devices that exchange language and/or data with the radio access network. There is no specific limitation in the embodiments of the present application.

Optionally, network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

Optionally, communication between the network device and the terminal device and between the terminal device and the terminal device can be performed through licensed spectrum (licensed spectrum), or through unlicensed spectrum (unlicensed spectrum), or both through licensed spectrum and unlicensed spectrum for communications. Communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through the spectrum below 7 gigahertz (GHz), or through the frequency spectrum above 7 GHz, and can also use the frequency spectrum below 7 GHz and the frequency spectrum at the same time. The spectrum above 7GHz is used for communication. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device to device (device to device, D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), and vehicle to vehicle (V2V) communication, etc., the embodiments of the present application can also be applied to these communications system.

Exemplarily, the communication system 100 applied in this embodiment of the present application is as shown in FIG. 9 . The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). The network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device can be a mobile switching center, relay station, access point, in-vehicle equipment, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolved Public Land Mobile Network (PLMN), etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110 . As used herein, "terminal equipment" includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connections and/or another data connection/network; and/or via a wireless interface, e.g. for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM- An FM broadcast transmitter; and/or a device of another terminal device configured to receive/transmit communication signals; and/or an Internet of Things (IoT) device. A terminal device arranged to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radio telephones with data processing, fax, and data communications capabilities; may include radio telephones, pagers, Internet/Intranet PDAs with networking access, web browsers, memo pads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or others including radiotelephone transceivers electronic device. Terminal equipment may refer to an access terminal, user equipment (UE), subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or in future evolved PLMNs, etc.

Optionally, direct terminal (Device to Device, D2D) communication may be performed between the terminal devices 120 .

Optionally, the 5G system or 5G network may also be referred to as a new radio (New Radio, NR) system or NR network.

FIG. 9 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system may be referred to as a communication device. Taking the communication system 100 shown in FIG. 9 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. ; The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., which are not limited in this embodiment of the present application.

An optional processing flow of the repeated transmission method provided by the embodiment of the present application, as shown in FIG. 10 , includes the following steps:

Step S201, the terminal device determines a time slot for repeated transmission, where the time slot includes flexible symbols and/or symbols with the same direction as the repeated transmission.

In some embodiments, the terminal device may receive indication information sent by the network device, where the indication information is used to indicate a time slot for repeated transmission; the time slot includes flexible symbols and/or symbols with the same direction as the repeated transmission.

In some embodiments, the direction of the repeated transmission may be uplink transmission, such as the PUSCH sent by the terminal device to the network device; then the symbol with the same direction as the repeated transmission may be the uplink symbol. Therefore, the time slot may include flexible symbols and/or uplink symbols; on the basis of including flexible symbols and/or uplink symbols, the time slot may also include downlink symbols. Therefore, in the embodiment of the present application, the time slot may include all uplink symbols, that is, the symbols in the time slot are all uplink symbols; the time slot may also include uplink symbols and flexible symbols, that is, the symbols in the time slot are uplink symbols and flexible symbols; The slot may also include all flexible symbols, that is, all symbols in the slot are flexible symbols; the time slot may also include uplink symbols and downlink symbols, or flexible symbols and downlink symbols, or uplink symbols, downlink symbols and flexible symbols.

Step S202, the terminal device performs symbol mapping in the time slot.

In some embodiments, the time slot may be a full uplink time slot, a flexible time slot including uplink symbols and flexible symbols, or a flexible time slot that is all flexible symbols. Based on this, the terminal equipment in this embodiment of the present application performs symbol mapping in the time slot, which is applicable to the full uplink time slot and the flexible time slot.

In this embodiment of the present application, taking the time slot as an example of a flexible time slot, the flexible time slot includes at least the flexible symbol, and the process of performing symbol mapping by the terminal device in the flexible time slot may include at least the following How to describe:

method one

The terminal device determines the modulation symbols corresponding to the data repeatedly transmitted in the flexible timeslot, and maps the modulation symbols to the resource elements corresponding to the flexible timeslots in sequence; the number of the modulation symbols is greater than or equal to the The number of resource particles.

Wherein, the repeatedly transmitted data may be the data that can be carried by the flexible time slot; or may be the data that can be carried by all uplink time slots, but is sent in the flexible time slot.

In some embodiments, the terminal device determining the modulation symbol corresponding to the repeatedly transmitted data in the flexible time slot may be: the terminal device determines, based on a first number of bits and a first modulation mode, the Modulation symbol; wherein, the number of the first bits is the same as the number of bits of each segmented code block used for repeated transmission in the full uplink time slot; and/or, the first modulation mode is the modulation corresponding to the full uplink time slot the same way. It can be understood that the terminal equipment adopts the same modulation mode as the full uplink time slot and the same number of bits as the full uplink time slot for repeated transmission of each segment code block, and performs bit selection and bit interleaving on the repeatedly transmitted data.

During specific implementation, if the repeatedly transmitted data includes two or more segmented code blocks, the terminal device determines the interleaving sequence corresponding to each segmented code block based on the first number of bits and the first modulation mode, Perform concatenation (concatenation) on the interleaved sequences corresponding to the segmented code blocks actually transmitted in the repeatedly transmitted data, and then perform scrambling and modulation on the concatenated interleaved sequences to obtain the modulation corresponding to the repeatedly transmitted data symbol.

Wherein, the first modulation mode may be a modulation mode such as BPSK, QPSK, or 16QAM; the first number of bits is based on the number of bits G that can be carried in a full uplink time slot for repeated transmission and the number C of code blocks actually transmitted. After dividing, the first number of bits represents the number of bits of each segmented code block used for transmission in the full uplink time slot. After the terminal device determines the first number of bits, taking the value of the first number of bits as E as an example, the terminal device takes out an encoded bit sequence with a length of E from the circular buffer, and uses e ₀ , e ₁ , e ₂ ...... e _E-1 represents; after that, the terminal device performs bit interleaving on the bit sequences e ₀ , e ₁ , e ₂ . . . e _E-1 according to the first modulation mode to obtain an interleaved sequence; or more than two segmented code blocks (that is, C is greater than 1), then each segmented code block performs the same bit selection and bit interleaving process, and connects the interleaved sequences corresponding to the actual transmitted segmented code blocks; After the concatenated interleaved sequence is processed by scrambling and modulation, modulation symbols corresponding to the repeatedly transmitted data are obtained. The modulation symbol is the modulation symbol for which symbol mapping is to be performed. In this scenario, the number of obtained modulation symbols is greater than or equal to the number of the resource particles. Therefore, in this embodiment of the present application, the modulation symbols can be sequentially mapped to the REs corresponding to the flexible time slots; the modulation symbols that cannot be mapped to the REs corresponding to the flexible time slots will not be sent in the flexible time slots. For example, if the number of modulation symbols is 576 and the number of REs is 288, the first 288 modulation symbols are mapped to REs, or the last 288 modulation symbols are mapped to REs.

Method 2

The terminal device determines the modulation symbol corresponding to the data repeatedly transmitted in the flexible time slot, and maps the modulation symbol to the resource element corresponding to the flexible time slot based on the first sequence; the number of the modulation symbols is greater than or equal to The number of said resource particles.

In some embodiments, the terminal device determining the modulation symbol corresponding to the repeatedly transmitted data in the flexible time slot may be: the terminal device determines, based on a first number of bits and a first modulation mode, the Modulation symbol; wherein, the number of the first bits is the same as the number of bits of each segmented code block used for repeated transmission in the full uplink time slot; and/or, the first modulation mode is the modulation corresponding to the full uplink time slot the same way. It can be understood that, for each segment code block, the terminal device adopts the same modulation mode as the full uplink time slot and the same number of bits as each segment code block used for repeated transmission in the full uplink time slot. The data is bit-selected and bit-interleaved.

During specific implementation, if the repeatedly transmitted data includes two or more segmented code blocks, the terminal device determines the interleaving sequence corresponding to each segmented code block based on the first number of bits and the first modulation mode, The interleaved sequences corresponding to the segmented code blocks in which the repeatedly transmitted data is actually transmitted are connected, and then the connected interleaved sequences are subjected to processing such as scramble modulation to obtain modulation symbols corresponding to the repeatedly transmitted data.

Wherein, the first modulation mode may be a modulation mode such as BPSK, QPSK, or 16QAM; the first number of bits is based on the number of bits G that can be carried in a full uplink time slot for repeated transmission and the number C of code blocks actually transmitted. After dividing, the first number of bits represents the number of bits of each segmented code block used for transmission in the full uplink time slot. After the terminal device determines the first number of bits, taking the value of the first number of bits as E as an example, the terminal device takes out an encoded bit sequence with a length of E from the circular buffer, and uses e ₀ , e ₁ , e ₂ ...... e _E-1 represents; after that, the terminal device performs bit interleaving on the bit sequences e ₀ , e ₁ , e ₂ . . . e _E-1 according to the first modulation mode to obtain an interleaved sequence; or two or more segmented code blocks (that is, C is greater than 1), then each segmented code block performs the same bit selection and bit interleaving process, and connects the interleaved sequences of the segmented code blocks that are actually transmitted. ; After scrambling and modulating the concatenated interleaved sequence, a modulation symbol corresponding to the repeatedly transmitted data is obtained. The modulation symbol is the modulation symbol for which symbol mapping is to be performed. In this scenario, the number of obtained modulation symbols is greater than or equal to the number of the resource particles. Therefore, in this embodiment of the present application, the modulation symbols can be mapped to the REs corresponding to the flexible timeslots based on the first sequence; the modulation symbols that cannot be mapped to the REs corresponding to the flexible timeslots will not be sent in the flexible timeslots.

In some embodiments, the process that the terminal device maps the modulation symbols to the REs corresponding to the flexible time slots based on the first sequence may be: the terminal device performs a dot product process on the first sequence and the modulation symbols; The modulation symbol corresponding to the first value as a result of the dot product is mapped to the resource element. The number of modulation symbols corresponding to the first value is equal to the number of data symbols that can be transmitted by the flexible time slot. Wherein, the length of the first sequence is the same as the number of the modulation symbols, and is in one-to-one correspondence.

For example, the first sequence may be a sequence consisting of "0" and "1", and the terminal device performs dot product processing on the first sequence and the modulation symbol; the dot product result corresponds to the first value The modulation symbols of are mapped to the resource elements. An optional schematic diagram of mapping the modulation symbols to the resource elements corresponding to the flexible time slots based on the first sequence, as shown in FIG. 11a, the modulation symbols corresponding to "0" in the first sequence are not subjected to symbol mapping , and perform symbol mapping on the modulation symbol corresponding to "1" in the first sequence. The symbol mapping in this scenario is the same as performing the symbol mapping in the order of modulation symbols. Another optional schematic diagram of mapping the modulation symbols to the resource elements corresponding to the flexible time slots based on the first sequence, as shown in FIG. 11b , the modulation symbols corresponding to "0" in the first sequence are not symbolized Mapping, symbol mapping is performed on the modulation symbol corresponding to "1" in the first sequence.

way three

The terminal device determines, based on the second number of bits and the second modulation mode, modulation symbols corresponding to data repeatedly transmitted in the flexible timeslot; and maps the modulation symbols to resource elements corresponding to the flexible timeslots one by one.

In some embodiments, the second number of bits is the number of bits that can be carried by the flexible time slot for repeated transmission, and the second number of bits may be represented by G1; the second modulation mode is a modulation mode corresponding to the flexible time slot; the second bit The number and the second modulation mode can be determined by the configuration of flexible time slots. The second number of bits may be the same as the number of bits used for repeated transmission that can be carried by all uplink time slots, or different from the number of bits that can be carried by all uplink time slots for repeated transmission. The number of bits to be transmitted repeatedly can be denoted by G. The second modulation scheme may be the same as the modulation scheme used for repeated transmission of all uplink time slots, or may be different from the modulation scheme used for repeated transmission of all uplink time slots. For example, if 10 symbols are used for repeated transmission in the full uplink time slot, and 10 available symbols are also used for repeated transmission in the flexible time slot, the second number of bits is the same as the number of bits that can be carried in the full uplink time slot. The number of bits for repeated transmission may be the same; the second modulation mode may be the same as the modulation mode corresponding to the full uplink time slot. Alternatively, the number of symbols used for repeated data transmission in the full uplink time slot is greater than the number of symbols available for repeated data transmission in the flexible time slot, and the second modulation mode and the modulation mode corresponding to the full uplink time slot may be the same. The number of two bits is less than the number of bits used for repeated transmission that can be carried by all uplink time slots; the second modulation mode may be higher than the modulation mode corresponding to all uplink time slots, for example, the modulation order of the second modulation mode is higher than that of all uplink time slots The modulation order of the corresponding modulation mode, in this case, the number of the second bits may be the same as the number of bits used for repeated transmission that can be carried by the full uplink time slot.

During specific implementation, the terminal device may obtain the second number of bits used for transmission in the flexible timeslot by multiplying the number of REs available in the flexible timeslot by the modulation order corresponding to the second modulation mode. The length of each segmented code block can be obtained by dividing the second number of bits by the number C of segmented code blocks actually sent. If the length of each segmented code block is E1, the terminal device takes out the coded bit sequence of length E1 from the circular buffer area, which is represented by e ₀ , e ₁ , e ₂ ...... e _E1-1 ; after that, The terminal device performs bit interleaving on the bit sequences e ₀ , e ₁ , e ₂ . . . e _E1-1 according to the second modulation mode, to obtain the interleaved sequences. If the repeatedly transmitted data is two or more segmented code blocks (that is, C is greater than 1), each segmented code block performs the same bit selection and bit interleaving process. The interleaved sequences of the blocks are concatenated, and then the concatenated interleaved sequences are subjected to processing such as scrambling and modulation to obtain modulation symbols corresponding to the repeatedly transmitted data. The modulation symbol is the modulation symbol for which symbol mapping is to be performed. In this scenario, the number of obtained modulation symbols is equal to the number of the resource particles. All modulation symbols can be mapped to the available REs of the flexible slot one by one.

way four

The terminal device determines, based on the first number of bits, the second number of bits, and the first modulation mode, the modulation symbols corresponding to the data repeatedly transmitted in the flexible time slot; and maps the modulation symbols to the flexible time slots one by one Corresponding resource particles.

In some embodiments, the second number of bits is the number of bits that can be carried by the flexible timeslot for repeated transmission, the second number of bits may be determined by the configuration of the flexible timeslot and the first modulation mode, and the second number of bits may be G1 express. The second number of bits may be the same as the number of bits used for repeated transmission that can be carried by all uplink time slots, or different from the number of bits that can be carried by all uplink time slots for repeated transmission. The number of bits to be transmitted repeatedly can be denoted by G. For example, if 10 symbols are used for repeated transmission in the full uplink time slot, and 10 available symbols are also used for repeated transmission in the flexible time slot, the second number of bits and the number of bits that can be carried in the full uplink time slot are used for repeated transmission. The number of bits can be the same; or, the number of symbols used for repeated data transmission in the full uplink time slot is greater than the number of symbols that can be used for repeated data transmission in the flexible time slot. The number of bits carried for repeated transmission.

During specific implementation, the terminal device may obtain the second number of bits used for transmission in the flexible timeslot by multiplying the number of REs available in the flexible timeslot by the modulation order corresponding to the first modulation mode. The length of each segmented code block can be obtained by dividing the second number of bits by the number C of code blocks actually sent.

The terminal device determines, based on the first number of bits, the second number of bits, and the first modulation mode, the modulation symbols corresponding to the data repeatedly transmitted in the flexible time slot; and maps the modulation symbols to the flexible time slots one by one An optional implementation manner of the corresponding resource element is: for each segment code block in the repeatedly transmitted data, the terminal device may, based on the first number of bits and the first modulation method, Perform bit selection for each segmented code block of deal with. If the number of segment code blocks to be transmitted is two or more (that is, C is greater than 1), each segment code block performs the same bit selection, and determines each segment code block determined based on the second number of bits. The sequence corresponding to the length and the bit interleaving process are connected to the interleaved sequences of the segmented code blocks that are actually transmitted, and then the concatenated interleaved sequences are subjected to scramble modulation and other processing to obtain the modulation corresponding to the repeatedly transmitted data. symbol. The modulation symbol is the modulation symbol corresponding to the repeatedly transmitted data, that is, the modulation symbol to be performed symbol mapping is obtained. In this scenario, the number of obtained modulation symbols is equal to the number of the resource particles. All modulation symbols can be mapped to the available REs of the flexible slot one by one.

For example, based on the multiplication of the number of REs available in the flexible timeslot by the modulation order corresponding to the first modulation mode, the terminal device obtains the second number of bits that can be carried by the flexible timeslot for repeated transmission. The length of each segmented code block can be obtained by dividing the second number of bits by the number C of code blocks actually sent. Taking the length of each segmented code block as E1 as an example, the number of bits of each segmented code block used for repeated transmission in all uplink time slots is E, then the terminal device takes out the coded data of length E from the circular buffer area. Bit sequence, represented by e ₀ , e ₁ , e ₂ ...... e _E-1 ; then select E1 bits from the sequence e ₀ , e ₁ , e ₂ ...... e _E-1 to form a new sequence k ₀ , k ₁ , k ₂ ...... k _E1-1 ; specifically, the sequence k 0 , k 1 , k 2 ...... k E1-1 can be selected in order to obtain the sequence k ₀ , k ₁ , k ₂ ...... k _E1-1 , or the sequence k ₀ can be obtained by selecting and obtained according to the preset rules, k ₁ ,k ₂ ……k _E1-1 ; for example, selecting according to the preset functional relationship obtains the sequence k ₀ ,k ₁ ,k ₂ ……k _E1-1 , or selecting the composition sequence k ₀ ,k that is ordered as an odd number ₁ , k ₂ ......k _E1-1 , or a composition sequence k ₀ , k ₁ , k ₂ ......k _E1-1 , etc., which are ordered as even numbers. After that, the terminal device performs bit interleaving on the bit sequences k ₀ , k ₁ , k ₂ . . . k _E1-1 according to the first modulation method. ), then each segmented code block performs the above process, connects the interleaved sequence of the segmented code block actually transmitted, and then performs processing such as scrambling and modulation on the connected interleaved sequence to obtain the repeated transmission. The modulation symbol corresponding to the data is obtained, that is, the modulation symbol for which symbol mapping is to be performed. In this scenario, the number of obtained modulation symbols is equal to the number of resource elements, and all modulation symbols can be mapped to the available REs of the flexible timeslot one by one.

The terminal device determines, based on the first number of bits, the second number of bits, and the first modulation mode, the modulation symbols corresponding to the data repeatedly transmitted in the flexible time slot; and maps the modulation symbols to the flexible time slots one by one Another optional implementation of the corresponding resource element is: for each segment code block in the repeatedly transmitted data, the terminal device may, based on the first number of bits and the first modulation method, perform a Bit selection is performed for each segmented block of data; interleaving is performed on the bit-selected sequence. If the number of segment code blocks to be transmitted is two or more (that is, C is greater than 1), each segment code block performs the same bit selection and bit interleaving process. The interleaved sequences are connected, and then a sequence with a length of the second number of bits is determined from the interleaved sequence after the connection, and the determined sequence with a length of the second number of bits is subjected to processing such as scrambling and modulation to obtain the repeated transmission. The modulation symbol corresponding to the data. The modulation symbol is the modulation symbol corresponding to the repeatedly transmitted data, that is, the modulation symbol to be performed symbol mapping is obtained. In this scenario, the number of obtained modulation symbols is equal to the number of the resource particles. All modulation symbols can be mapped to the available REs of the flexible slot one by one.

For example, based on the multiplication of the number of REs available in the flexible timeslot by the modulation order corresponding to the first modulation mode, the terminal device obtains the second number of bits that the flexible timeslot can carry for repeated transmission, and the second bit number is The number is represented by E2. The number of bits of each segmented code block used for repeated transmission of all uplink time slots is E, then the terminal device takes out the coded bit sequence of length E from the circular buffer area, and uses e ₀ , e ₁ , e ₂ . . . ...e _E-1 indicates; the terminal device performs bit interleaving on the bit sequence e ₀ , e ₁ , e ₂ ...... e _E-1 according to the first modulation method, if the segment code blocks to be transmitted are two or more (that is, C is greater than 1), the above process is performed for each segmented code block, the interleaved sequences of the segmented code blocks that are actually transmitted are connected, and then the length of the second bit is selected from the connected interleaved sequence. A sequence of numbers, with k ₀ , k ₁ , k ₂ . . . k _E2-1 , scrambling and modulate the sequence k ₀ , k ₁ , k ₂ . . . k _E2-1 of the second number of bits of length and other processing to obtain the modulation symbol corresponding to the repeatedly transmitted data, that is, to obtain the modulation symbol to be performed symbol mapping. Wherein, the sequence of the second number of bits may be sequentially determined from the concatenated interleaving sequence; or, from the concatenated interleaved sequence, the sequence of the second number of bits may be determined according to a preset rule. In this scenario, the number of obtained modulation symbols is equal to the number of resource elements, and all modulation symbols can be mapped to the available REs of the flexible timeslot one by one.

In the fourth embodiment of the present application, the first number of bits is the number of bits of each segmented code block used for repeated transmission in all uplink time slots (when the code block is not segmented, that is, when C=1, the first number of bits is The number of bits is equal to the number of bits used for repeated data transmission in all uplink time slots), the second number of bits is the number of bits that can be carried in the flexible time slot for repeated transmission, and the first number of bits is the same as the number of bits based on the The number of bits used for repeated transmission of each segmented code block in the flexible time slot determined by the number of two bits may be the same or different; the first modulation mode is the same as the modulation mode corresponding to the full uplink time slot; the second number of bits is based on The first modulation mode and the number of REs available in the flexible timeslot are determined.

way five

The terminal device determines the modulation symbol corresponding to the data repeatedly transmitted in the flexible time slot based on the first number of bits and the first modulation mode; maps the modulation symbol to the resource element according to the first mode, the first mode The symbol mapping method is the same as that of all uplink time slots; the resource elements corresponding to the flexible time slots not used for repeated transmission are punctured. Resource particles that have been punched will not be transmitted.

In the embodiment of the present application, a schematic diagram of puncturing processing of resource elements corresponding to flexible time slots not used for repeated transmission is shown in FIG. 12 , the 0th symbol to the second symbol are downlink symbols, and the third symbol is a downlink symbol. and the 4th symbol are flexible symbols. If the network device does not indicate that the flexible symbols are used for uplink transmission, puncturing is performed on the resource elements to which the 0th symbol to the 4th symbol are mapped.

In some embodiments, the first number of bits is the same as the number of bits of each segmented code block used for repeated transmission in the full uplink time slot; and/or, the first modulation mode corresponds to the full uplink time slot. The modulation method is the same. It can be understood that the terminal equipment adopts the same modulation method as the full uplink time slot for each segment code block and the same number of bits as each segment code block used for repeated transmission in the full uplink time slot. Data is bit-selected and bit-interleaved.

Wherein, the first modulation mode may be modulation modes such as BPSK, QPSK, or 16QAM; the first number of bits is based on the number of bits G for repeated transmission that can be carried in a full uplink time slot and the number of code blocks C for actual transmission It is obtained by dividing, the first number of bits represents the number of bits of each segmented code block used for repeated transmission in the full uplink time slot. After the terminal device determines the first number of bits, taking the value of the first number of bits as E as an example, the terminal device takes out an encoded bit sequence with a length of E from the circular buffer, and uses e ₀ , e ₁ , e ₂ ...... e _E-1 represents; after that, the terminal device performs bit interleaving on the bit sequences e ₀ , e ₁ , e ₂ . . . e _E-1 according to the first modulation mode to obtain an interleaved sequence; or two or more segmented code blocks (that is, C is greater than 1), then each segmented code block performs the same bit selection and bit interleaving process, and connects the interleaved sequences of the segmented code blocks that are actually transmitted. ; After performing scramble modulation and other processing on the connected interleaved sequence, a modulation symbol corresponding to the repeatedly transmitted data is obtained, and the modulation symbol is the modulation symbol to be performed symbol mapping. After the modulation symbols are mapped to resource elements, the resource elements corresponding to the flexible time slots not used for repeated transmission are punctured.

way six

The terminal device determines the modulation symbol corresponding to the data repeatedly transmitted in the flexible time slot based on the first number of bits and the first modulation mode; and maps the modulation symbol corresponding to the flexible time slot used for repeated transmission to the first mode. For resource elements, the modulation symbols corresponding to the resource elements not used for repeated transmission in the flexible timeslot are punctured. The first manner is the same as the symbol mapping manner of all uplink time slots. Here, the punctured modulation symbols cannot be mapped to resource elements.

During specific implementation, if the repeatedly transmitted data includes two or more segmented code blocks, the terminal device determines the interleaving sequence corresponding to each segmented code block based on the first number of bits and the first modulation mode, Concatenate the interleaved sequences corresponding to the segmented code blocks in which the repeatedly transmitted data is actually transmitted, and then perform scramble modulation on the concatenated interleaved sequences to obtain modulation symbols corresponding to the repeatedly transmitted data . The modulation symbols corresponding to the resource elements not used for repeated transmission in the flexible timeslot are punctured, and the remaining symbols are mapped to the resource elements used for repeated transmission in the flexible timeslot.

Wherein, the first modulation mode may be modulation modes such as BPSK, QPSK, or 16QAM; the first number of bits is based on the number of bits G for repeated transmission that can be carried in a full uplink time slot and the number of code blocks C for actual transmission Divided, the first number of bits represents the number of bits of each segmented code block used for transmission in the full uplink time slot. After the terminal device determines the first number of bits, taking the value of the first number of bits as E as an example, the terminal device takes out an encoded bit sequence with a length of E from the circular buffer, and uses e ₀ , e ₁ , e ₂ ...... e _E-1 represents; after that, the terminal device performs bit interleaving on the bit sequences e ₀ , e ₁ , e ₂ . . . e _E-1 according to the first modulation mode to obtain an interleaved sequence; or two or more segmented code blocks (that is, C is greater than 1), then each segmented code block performs the same bit selection and bit interleaving process, and connects the interleaved sequences of the segmented code blocks that are actually transmitted. Then, after performing scramble modulation and other processing on the connected interleaved sequence, the modulation symbols corresponding to the repeatedly transmitted data are obtained, and the modulation symbols corresponding to the resource elements not used for repeated transmission in the flexible time slots are punctured. The modulation symbols are mapped to the resource elements in the same way as the symbol mapping method of the full uplink time slot; wherein, the modulation symbols after puncturing processing cannot be mapped to the resource elements.

In some embodiments, the repeated transmission method may further include:

Step S203, the terminal device determines soft bit information of the received downlink data; the terminal device maps the soft bit information to bits corresponding to the downlink data.

In some embodiments, the downlink data is symbol mapping performed by the network device based on any one of the foregoing manners 1 to 6, and the time slot for transmitting the downlink data includes flexible symbols and/or downlink symbols.

In some embodiments, the terminal device receives the downlink data sent by the network device, and the terminal device uses a log-likelihood ratio (Log Likelihood Ratio, LLR) based on a maximum a posteriori criterion to calculate the soft bit information of the modulated signal. The terminal device demodulates symbols of downlink data to obtain corresponding soft bit information, and then maps the soft bit information to bits corresponding to the downlink data based on symbol mapping.

Another optional processing flow of the repeated transmission method provided by the embodiment of the present application, as shown in FIG. 13 , includes the following steps:

Step S301, the network device determines a time slot for repeated transmission, where the time slot includes flexible symbols and/or symbols with the same direction as the repeated transmission.

In some embodiments, the direction of the repeated transmission may be downlink transmission, such as the PDSCH sent by the network device to the terminal device; then the symbol with the same direction as the repeated transmission may be the downlink symbol. Therefore, the time slot may include flexible symbols and/or downlink symbols; and on the basis of including the flexible symbols and/or downlink symbols, the time slot may also include uplink symbols. Therefore, in this embodiment of the present application, the time slot may include all downlink symbols, that is, all the symbols in the slot are downlink symbols; the time slot may also include downlink symbols and flexible symbols, that is, the symbols in the time slot are downlink symbols and flexible symbols; The slot may also include all flexible symbols, that is, the symbols in the slot are all flexible symbols; the time slot may also include uplink symbols and downlink symbols, or include uplink symbols, downlink symbols and flexible symbols.

Step S302, the network device performs symbol mapping in the time slot.

In some embodiments, the process that the network device performs symbol mapping in the time slot is similar to the process that the terminal device performs symbol mapping in the time slot in the above step S202, the difference is that the uplink time slot in step S202 is changed. , the uplink symbols are adjusted to the downlink time slots and downlink symbols in step S303.

In some embodiments, the method may further include:

Step S303, the network device determines soft bit information of the received uplink data; the network device maps the soft bit information to bits corresponding to the uplink data.

In some embodiments, the uplink data is symbol mapping performed by the terminal device based on any one of the foregoing manners 1 to 6, and the time slot for transmitting the uplink data includes flexible symbols and/or uplink symbols.

In some embodiments, the network device receives the uplink data sent by the terminal device, and the network device uses the LLR based on the maximum a posteriori probability criterion to calculate the soft bit information of the modulated signal. The network device demodulates symbols of uplink data to obtain corresponding soft bit information, and then maps the soft bit information to bits corresponding to the uplink data based on symbol mapping.

A detailed processing flow of the repeated transmission method provided by the embodiment of the present application is shown in FIG. 14 ,

Step S401, the terminal device determines the symbol configuration of the flexible time slot according to the high-level configuration.

In some embodiments, the terminal device determines the repeated transmission coefficient, the time slot position of each repeated transmission and the symbol configuration of each time slot according to the high layer configuration.

In some embodiments, the terminal device may determine, according to the k2 value indicated in the DCI sent by the network device, the starting time slot for repeated transmission of the PUSCH, and the time slot where the i-th repeated transmission of the PUSCH is located. The terminal device may determine, according to the k0 value indicated in the DCI sent by the network device, the initial time slot for the network device to repeatedly transmit the PDSCH, and the time slot where the i-th repeated PDSCH transmission is located.

Step S402, the terminal device determines a time slot for repeated transmission.

In some embodiments, the time slot where the terminal device determines that the i-th repeated transmission of the PUSCH is located may include an uplink time slot and/or a flexible time slot; the time slot where the i-th repeated transmission of the PDSCH is located may include a downlink time slot and/or a flexible time slot. time slot.

Step S403, the terminal device performs symbol mapping based on the determined time slot for repeated transmission.

In some embodiments, the processing procedure of performing the symbol mapping by the terminal device is the same as the processing procedure of performing the symbol mapping in the foregoing step S202, which is not repeated here.

Taking the repeated transmission of PUSCH data as an example, suppose the frame structure is DDSU, where D represents all downlink time slots, U represents all uplink time slots, and S represents flexible time slots; the symbol ratio of flexible time slots is S:3D:2F: 9U, i.e. 3 downstream symbols, two flexible symbols and 9 upstream symbols. In the case of DCI scheduling 1 physical resource block, a schematic diagram of the flexible timeslot RE is shown in Figure 15: When performing PUSCH repeated transmission, if the number of available symbols is 14, and the demodulation reference signal (Demodulation Reference Signal) , the number of DMRS) is 2, and a total of 12*12=144 REs in the corresponding full uplink time slot can perform repeated data transmission. However, there are only 9 uplink symbols in the flexible time slot. Considering that 2 are used for DRMS transmission, there are correspondingly 12*7=84 REs that can perform repeated data transmission.

In some embodiments, when the actual number of repeated transmissions of the PDSCH reaches the repetition value configured by the high layer, the repeated transmission is ended.

The repeated transmission method provided by the embodiment of the present application can use flexible time slots for repeated transmission; compared with the prior art, in which the flexible time slot is ignored when the repeated transmission is performed, the repeated transmission method provided by the embodiment of the present application can improve the frequency of the spectrum. Use efficiency, effectively utilize the time-frequency resources under the TDD structure, solve the problem of insufficient number of time slots for effective repeated transmission when the PDSCH or PUSCH is repeatedly transmitted under the TDD structure, and improve the coverage performance of data multiplex transmission. The repeated transmission method provided by the embodiment of the present application specifies how to perform symbol mapping when using flexible time slots for repeated transmission; Rate matching and modulation processing are carried out with different bit numbers and modulation modes in all uplink time slots, which realizes the mapping of repeatedly transmitted symbols in flexible time slots, so that when repeating data transmission in flexible time slots, it can effectively solve the problem of TDD coverage. insufficient problem.

To implement the repeated transmission method provided by the embodiment of the present application, the embodiment of the present application further provides a terminal device. The optional composition structure of the terminal device 500, as shown in FIG. 16 , includes:

The first processing unit 501 is configured to determine a time slot for repeated transmission, where the time slot includes flexible symbols and/or symbols with the same direction as the repeated transmission; and perform symbol mapping in the time slot.

In some embodiments, the first processing unit 501 is configured to determine modulation symbols corresponding to data repeatedly transmitted in a flexible timeslot, and map the modulation symbols to resource elements corresponding to the flexible timeslots in sequence;

The flexible timeslot includes at least the flexible symbols, and the number of the modulation symbols is greater than or equal to the number of the resource elements.

In some embodiments, the first processing unit 501 is configured to determine a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, and map the modulation symbol to a resource element corresponding to the flexible time slot based on the first sequence , the flexible time slot includes at least the flexible symbol;

The number of modulation symbols is greater than or equal to the number of resource elements.

In some embodiments, the length of the first sequence is the same as the number of modulation symbols.

In some embodiments, the first processing unit 501 is configured to perform a dot multiplication process on the first sequence and the modulation symbol; and map the modulation symbol corresponding to the first value as a result of dot multiplication to the resource element .

In some embodiments, the number of modulation symbols corresponding to the first value is equal to the number of data symbols that can be transmitted by the flexible timeslot.

In some embodiments, the first processing unit 501 is configured to determine the modulation symbol corresponding to the repeatedly transmitted data based on a first number of bits and a first modulation mode.

In some embodiments, the first number of bits is the same as the number of bits of each segmented code block used for repeated transmission in the full uplink time slot; and/or, the first modulation mode corresponds to the full uplink time slot. The modulation method is the same.

In some embodiments, the first processing unit 501 is configured to, based on the second number of bits and the second modulation mode, determine the modulation symbols corresponding to the data repeatedly transmitted in the flexible time slot; and map the modulation symbols to the Resource elements corresponding to the flexible timeslot, where the flexible timeslot at least includes the flexible symbols.

In some embodiments, the second number of bits is the same as or different from the number of bits used for repeated transmission that can be carried by all uplink time slots; and/or, the second modulation mode is a modulation mode corresponding to all uplink time slots same or different.

In some embodiments, the first processing unit 501 is configured to determine, based on the first number of bits, the second number of bits, and the first modulation mode, a modulation symbol corresponding to the data repeatedly transmitted in the flexible timeslot; The symbols are mapped to resource elements corresponding to the flexible timeslots one by one, and the flexible timeslots at least include the flexible symbols.

In some embodiments, the first processing unit 501 is configured to perform bit selection on each segmented code block of the repeatedly transmitted data based on a first number of bits and a first modulation scheme;

From the sequence obtained by the bit selection, determine a new sequence based on the second number of bits to perform interleaving;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

The modulation symbol corresponding to the repeatedly transmitted data is determined based on the concatenated interleaved sequence.

In some embodiments, the new sequence includes: a sequence determined in sequence from the sequences selected by the bits; or a sequence determined according to a preset rule from the sequences selected by the bits.

In some embodiments, the first processing unit 501 is configured to, based on the first number of bits, the second number of bits and the first modulation mode, determine the modulation symbols corresponding to the repeatedly transmitted data including:

The terminal device performs bit selection and bit interleaving on each segmented code block of the repeatedly transmitted data based on the first number of bits and the first modulation method; The sequence is connected; a sequence with a length of a second number of bits is determined from the interleaved sequence after the connection; a modulation symbol corresponding to the repeatedly transmitted data is determined based on the sequence with a length of the second number of bits.

In some embodiments, the sequence with a length of the second number of bits includes: a sequence with a length of the second number of bits determined in order from the concatenated interleaved sequence; or, from the concatenated interleaved sequence , the length determined according to the preset rule is the sequence of the second number of bits.

In some embodiments, the first number of bits is the number of bits of each segment code block used for repeated transmission in the full uplink time slot, and the second number of bits is the number of bits used for repeated transmission that can be carried by the flexible time slot number, the first bit number and the second bit number are the same or different;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.

In some embodiments, the second number of bits is determined based on a second modulation scheme, and the second modulation scheme is the same as or different from a modulation scheme corresponding to all uplink time slots.

In some embodiments, the first processing unit 501 is configured to determine, based on a first number of bits and a first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the Flexible symbols; map the modulation symbols to resource elements according to the first method, which is the same as the symbol mapping method of all uplink time slots; puncture the resource elements corresponding to the flexible time slots not used for repeated transmission deal with.

In some embodiments, the first processing unit 501 is configured to determine, based on a first number of bits and a first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbols;

The modulation symbols corresponding to the flexible timeslots used for repeated transmission are mapped to the resource elements according to a first manner, which is the same as the symbol mapping manner of the full uplink timeslots.

In some embodiments, the first processing unit 501 is configured to perform puncturing processing on modulation symbols corresponding to resource elements not used for repeated transmission in the flexible timeslot.

In some embodiments, the first processing unit 501 is further configured to determine soft bit information of the received downlink data, and the time slot for transmitting the downlink data includes flexible symbols and/or downlink symbols; The information is mapped to bits corresponding to the downlink data.

In some embodiments, the terminal device 500 further includes: a first receiving unit 502, configured to receive downlink data.

It should be noted that, in this embodiment of the present application, the function of the first processing unit 501 may be implemented by a processor, and the function of the first receiving unit 502 may be implemented by a receiver or a transceiver.

In order to implement the repeated transmission method provided by the embodiment of the present application, the embodiment of the present application further provides a network device. The optional composition structure of the network device 600, as shown in FIG. 17 , includes:

The second processing unit 601 is configured to determine a time slot for repeated transmission, where the time slot includes flexible symbols and/or symbols with the same direction as the repeated transmission; and perform symbol mapping in the time slot.

In some embodiments, the second processing unit 601 is configured to determine modulation symbols corresponding to data repeatedly transmitted in a flexible time slot; map the modulation symbols to resource elements corresponding to the flexible time slots in sequence; The number of modulation symbols is greater than or equal to the number of resource elements, and the flexible time slot includes at least the flexible symbols.

In some embodiments, the second processing unit 601 is configured to determine a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot; and map the modulation symbol to a resource element corresponding to the flexible time slot based on the first sequence ;

The number of modulation symbols is greater than or equal to the number of resource elements, and the flexible time slot includes at least the flexible symbols.

In some embodiments, the second processing unit 601 is configured to perform a dot multiplication process on the first sequence and the modulation symbol; and map the modulation symbol whose dot multiplication result is a first value to the resource element .

In some embodiments, the second processing unit 601 is configured to determine the modulation symbol corresponding to the repeatedly transmitted data based on a first number of bits and a first modulation mode.

In some embodiments, the second processing unit 601 is configured to determine, based on a second number of bits and a second modulation method, a modulation symbol corresponding to data repeatedly transmitted in a flexible timeslot, where the flexible timeslot at least includes the flexible symbols;

The modulation symbols are mapped to resource elements corresponding to the flexible timeslots one by one.

In some embodiments, the second processing unit 601 is configured to, based on the first number of bits, the second number of bits and the first modulation mode, determine a modulation symbol corresponding to the data repeatedly transmitted in the flexible timeslot; The symbols are mapped to resource elements corresponding to the flexible timeslots one by one, and the flexible timeslots at least include the flexible symbols.

In some embodiments, the second processing unit 601 is configured to, based on a first number of bits and a first modulation scheme, perform bit selection on each segmented code block of the repeatedly transmitted data; select from the bits In the obtained sequence, a new sequence is determined based on the second number of bits to perform interleaving processing; the interleaving sequences after the interleaving processing of the actually transmitted segmented code blocks are connected; The modulation symbol corresponding to the data.

In some embodiments, the second processing unit 601 is configured to perform bit selection and bit interleaving on each segmented code block of the repeatedly transmitted data based on the first number of bits and the first modulation mode; The interleaved sequences after the interleaving process of the transmitted segmented code blocks are connected; the sequence whose length is the second number of bits is determined from the interleaved sequence after the connection; the sequence of the repeated transmission is determined based on the sequence whose length is the second number of bits. The modulation symbol corresponding to the data.

In some embodiments, the sequence with a length of the second number of bits includes: a sequence with a length of the second number of bits determined in order from the concatenated interleaved sequence; or, from the concatenated interleaved sequence In the sequence, the sequence of the second number of bits determined according to the preset rule.

In some embodiments, the first number of bits is the number of bits of each segment code block used for repeated transmission in the full uplink time slot, and the second number of bits is the number of bits used for repeated transmission that can be carried by the flexible time slot The number of the first bits is the same as or different from the number of the second bits; and/or the first modulation mode is the same as the modulation mode corresponding to the full uplink time slot.

In some embodiments, the second processing unit 601 is configured to determine, based on the first number of bits and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the Flexible symbols; map the modulation symbols to resource elements according to the first method, which is the same as the symbol mapping method of all uplink time slots; puncture the resource elements corresponding to the flexible time slots not used for repeated transmission deal with.

In some embodiments, the second processing unit 601 is configured to determine, based on the first number of bits and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the Flexible symbols; the modulation symbols corresponding to the flexible timeslots used for repeated transmission are mapped to resource elements according to the first method, and the first method is the same as the symbol mapping method of the full uplink timeslots.

In some embodiments, the second processing unit 601 is configured to puncture the modulation symbols corresponding to the flexible time slots not used for repeated transmission.

In some embodiments, the second processing unit 601 is further configured to determine soft bit information of the received downlink data, and the time slot for transmitting the downlink data includes flexible symbols and/or downlink symbols; The information is mapped to bits corresponding to the downlink data.

In some embodiments, the network device 600 further includes: a second receiving unit 602, configured to receive downlink data.

It should be noted that, in this embodiment of the present application, the function of the second processing unit 601 may be implemented by a processor, and the function of the second receiving unit 602 may be implemented by a receiver or a transceiver.

An embodiment of the present application further provides a terminal device, including a processor and a memory for storing a computer program that can be run on the processor, wherein the processor is configured to execute the program executed by the terminal device when the processor is running the computer program. Repeat the steps of the transfer method.

An embodiment of the present application further provides a network device, including a processor and a memory for storing a computer program that can be run on the processor, wherein the processor is configured to execute the program executed by the network device when running the computer program. Repeat the steps of the transfer method.

An embodiment of the present application further provides a chip, including: a processor, configured to call and run a computer program from a memory, so that a device on which the chip is installed executes the above-mentioned repeated transmission method executed by the terminal device.

An embodiment of the present application further provides a chip, including: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method for repeated transmission performed by the foregoing network device.

An embodiment of the present application further provides a storage medium storing an executable program, and when the executable program is executed by a processor, the above-mentioned repeated transmission method performed by a terminal device is implemented.

The embodiment of the present application further provides a storage medium storing an executable program, and when the executable program is executed by a processor, the above-mentioned repeated transmission method performed by the network device is implemented.

Embodiments of the present application further provide a computer program product, including computer program instructions, the computer program instructions enable a computer to execute the above-mentioned repeated transmission method executed by the terminal device.

Embodiments of the present application further provide a computer program product, including computer program instructions, the computer program instructions enable a computer to execute the above-mentioned repeated transmission method executed by the network device.

The embodiment of the present application further provides a computer program, the computer program enables the computer to execute the repeated transmission method executed by the above-mentioned terminal device.

The embodiment of the present application further provides a computer program, the computer program enables the computer to execute the repeated transmission method executed by the above-mentioned network device.

FIG. 18 is a schematic diagram of a hardware structure of an electronic device (terminal device or network device) according to an embodiment of the present application. The electronic device 700 includes: at least one processor 701 , memory 702 and at least one network interface 704 . The various components in electronic device 700 are coupled together by bus system 705 . It can be understood that the bus system 705 is used to implement the connection communication between these components. In addition to the data bus, the bus system 705 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, the various buses are labeled as bus system 705 in FIG. 18 .

It will be appreciated that memory 702 may be either volatile memory or non-volatile memory, and may include both volatile and non-volatile memory. Among them, the non-volatile memory can be ROM, Programmable Read-Only Memory (PROM, Programmable Read-Only Memory), Erasable Programmable Read-Only Memory (EPROM, Erasable Programmable Read-Only Memory), Electrically Erasable Programmable Read-Only Memory Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disk, or CD-ROM -ROM, Compact Disc Read-Only Memory); magnetic surface memory can be disk memory or tape memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of example but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory Memory (DRAM, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), Enhanced Type Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous Link Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory) ). The memory 702 described in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

The memory 702 in this embodiment of the present application is used to store various types of data to support the operation of the electronic device 700 . Examples of such data include: any computer program used to operate on electronic device 700, such as application 7022. The program for implementing the method of the embodiment of the present application may be included in the application program 7022 .

The methods disclosed in the above embodiments of the present application may be applied to the processor 701 or implemented by the processor 701 . The processor 701 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in the form of software. The above-mentioned processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The processor 701 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the electronic device 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs) , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic component implementation for performing the aforementioned method.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program 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 flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on 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 such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

It should be understood that the terms "system" and "network" in this application are often used interchangeably herein. The term "and/or" in this application is only an association relationship to describe associated objects, which 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, independently There are three cases of B. In addition, the character "/" in this application generally indicates that the related objects are an "or" relationship.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the within the scope of protection of this application.

Claims

A method of repeated transmission, the method comprising:

the terminal device determines a time slot for repeated transmission, the time slot including flexible symbols and/or symbols in the same direction as the repeated transmission;

The terminal device performs symbol mapping in the time slot.
The method of claim 1, wherein the terminal device performs symbol mapping at the time slot:

determining, by the terminal device, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot includes at least the flexible symbol;

mapping the modulation symbols to resource elements corresponding to the flexible time slots in sequence;

The number of modulation symbols is greater than or equal to the number of resource elements.
The method of claim 1, wherein the terminal device performs symbol mapping at the time slot:

determining, by the terminal device, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot includes at least the flexible symbol;

mapping the modulation symbols to resource elements corresponding to the flexible time slots based on the first sequence;

The number of modulation symbols is greater than or equal to the number of resource elements.
4. The method of claim 3, wherein the length of the first sequence is the same as the number of modulation symbols.
The method according to claim 3 or 4, wherein the terminal device maps the modulation symbols to resource elements for the repeated transmission based on a first sequence, comprising:

performing, by the terminal device, a dot product process on the first sequence and the modulation symbol;

The modulation symbol corresponding to the first value as a result of the dot product is mapped to the resource element.
The method of claim 5, wherein the number of modulation symbols corresponding to the first value is equal to the number of data symbols that can be transmitted by the flexible timeslot.
The method according to any one of claims 2 to 6, wherein determining, by the terminal device, a modulation symbol corresponding to the repeatedly transmitted data comprises:

The terminal device determines the modulation symbol corresponding to the repeatedly transmitted data based on the first number of bits and the first modulation mode.
The method of claim 7, wherein,

The first number of bits is the same as the number of bits of each segmented code block used for repeated transmission in the full uplink time slot;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.
The method of claim 1, wherein the terminal device performs symbol mapping in the time slot, comprising:

The terminal device determines, based on the second number of bits and the second modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

The modulation symbols are mapped to resource elements corresponding to the flexible timeslots one by one.
The method of claim 9, wherein,

The second number of bits is the same as or different from the number of bits used for repeated transmission that can be carried by the full uplink time slot;

And/or, the second modulation mode is the same as or different from the modulation mode corresponding to all uplink time slots.
The method of claim 1, wherein the terminal device performs symbol mapping in the time slot, comprising:

The terminal device determines, based on the first number of bits, the second number of bits, and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

The modulation symbols are mapped to resource elements corresponding to the flexible timeslots one by one.
The method according to claim 11, wherein determining, by the terminal device, based on the first number of bits, the second number of bits and the first modulation method, the modulation symbol corresponding to the repeatedly transmitted data comprises:

The terminal device performs bit selection on each segmented code block of the repeatedly transmitted data based on a first number of bits and a first modulation scheme;

From the sequence obtained by the bit selection, determine a new sequence based on the second number of bits to perform interleaving;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

The modulation symbol corresponding to the repeatedly transmitted data is determined based on the concatenated interleaved sequence.
The method of claim 12, wherein the new sequence comprises:

A sequence determined in order from the sequences selected from the bits;

Or, a sequence determined according to a preset rule from the sequences obtained by the bit selection.
The method according to claim 11, wherein determining, by the terminal device, based on the first number of bits, the second number of bits and the first modulation method, the modulation symbol corresponding to the repeatedly transmitted data comprises:

The terminal device performs bit selection and bit interleaving on each segmented code block of the repeatedly transmitted data based on the first number of bits and the first modulation scheme;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

determining a sequence having a length of the second number of bits from the concatenated interleaved sequence;

A modulation symbol corresponding to the repeatedly transmitted data is determined based on the sequence whose length is the second number of bits.
The method of claim 14, wherein the sequence of the second number of bits of length comprises:

From the concatenated interleaved sequence, the sequence determined in order is a sequence of the second number of bits;

Or, from the concatenated interleaved sequence, a sequence with a length of the second number of bits determined according to a preset rule.
The method of any one of claims 11 to 15, wherein,

The first number of bits is the number of bits of each segment code block used for repeated transmission in the full uplink time slot, the second number of bits is the number of bits that can be carried by the flexible time slot for repeated transmission, and the first number of bits is used for repeated transmission. A number of bits is the same as or different from said second number of bits;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.
The method of any one of claims 11 to 16, wherein,

The second number of bits is determined based on a second modulation scheme, and the second modulation scheme is the same as or different from the modulation scheme corresponding to the full uplink time slot.
The method of claim 1, wherein the terminal device performs symbol mapping in the time slot, comprising:

The terminal device determines, based on the first number of bits and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

mapping the modulation symbols to resource elements according to a first manner, the first manner is the same as the symbol mapping manner of all uplink time slots;

The resource elements corresponding to the flexible time slots not used for repeated transmission are punctured.
The method of claim 1, wherein the terminal device performs symbol mapping in the time slot, comprising:

The terminal device determines, based on the first number of bits and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

The modulation symbols corresponding to the flexible timeslots used for repeated transmission are mapped to the resource elements according to a first manner, which is the same as the symbol mapping manner of the full uplink timeslots.
The method of claim 19, wherein the terminal device performs symbol mapping in the time slot, comprising:

The terminal equipment punctures modulation symbols corresponding to resource elements not used for repeated transmission in the flexible timeslot.
The method according to any one of claims 1 to 20, wherein the method further comprises:

The terminal device determines the soft bit information of the received downlink data, and the time slot for transmitting the downlink data includes flexible symbols and/or downlink symbols;

The terminal device maps the soft bit information to bits corresponding to the downlink data.
A method of repeated transmission, the method comprising:

the network device determines time slots for repeated transmissions, said time slots comprising flexible symbols and/or symbols in the same direction as said repeated transmissions;

The network device performs symbol mapping at the timeslot.
The method of claim 22, wherein the network device performs symbol mapping at the timeslot:

determining, by the network device, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot includes at least the flexible symbol;

mapping the modulation symbols to resource elements corresponding to the flexible time slots in sequence;

The number of modulation symbols is greater than or equal to the number of resource elements.
The method of claim 22, wherein the network device performs symbol mapping at the timeslot:

determining, by the network device, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot includes at least the flexible symbol;

mapping the modulation symbols to resource elements corresponding to the flexible time slots based on the first sequence;

The number of modulation symbols is greater than or equal to the number of resource elements.
25. The method of claim 24, wherein the length of the first sequence is the same as the number of modulation symbols.
The method of claim 24 or 25, wherein the network device maps the modulation symbols to resource elements for the repeated transmission based on a first sequence, comprising:

performing, by the network device, a dot product process on the first sequence and the modulation symbol;

The modulation symbol corresponding to the first value as a result of the dot product is mapped to the resource element.
27. The method of claim 26, wherein the number of modulation symbols corresponding to the first value is equal to the number of data symbols that can be transmitted by the flexible slot.
The method according to any one of claims 23 to 27, wherein the network device determines the modulation symbol corresponding to the repeatedly transmitted data, comprising:

The network device determines the modulation symbol corresponding to the repeatedly transmitted data based on the first number of bits and the first modulation mode.
The method of claim 28, wherein,

The first number of bits is the same as the number of bits of each segmented code block used for repeated transmission in the full uplink time slot;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.
The method of claim 22, wherein the network device performs symbol mapping at the time slot, comprising:

The network device determines, based on the second number of bits and the second modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

The modulation symbols are mapped to resource elements corresponding to the flexible timeslots one by one.
The method of claim 30, wherein,

The second number of bits is the same as or different from the number of bits used for repeated transmission that can be carried by the full uplink time slot;

And/or, the second modulation mode is the same as or different from the modulation mode corresponding to all uplink time slots.
The method of claim 22, wherein the network device performs symbol mapping at the time slot, comprising:

The network device determines, based on the first number of bits, the second number of bits, and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

The modulation symbols are mapped to resource elements corresponding to the flexible timeslots one by one.
The method according to claim 32, wherein, based on the first number of bits, the second number of bits and the first modulation method, the network device determining the modulation symbol corresponding to the repeatedly transmitted data comprises:

The network device performs bit selection on each segmented code block of the repeatedly transmitted data based on a first number of bits and a first modulation scheme;

From the sequence obtained by the bit selection, determine a new sequence based on the second number of bits to perform interleaving;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

The modulation symbol corresponding to the repeatedly transmitted data is determined based on the concatenated interleaved sequence.
The method of claim 33, wherein the new sequence comprises:

A sequence determined in order from the sequences selected from the bits;

Or, a sequence determined according to a preset rule from the sequences obtained by the bit selection.
The method according to claim 32, wherein, based on the first number of bits, the second number of bits and the first modulation method, the network device determining the modulation symbol corresponding to the repeatedly transmitted data comprises:

The network device performs bit selection and bit interleaving on each segmented code block of the repeatedly transmitted data based on the first number of bits and the first modulation scheme;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

determining a sequence having a length of the second number of bits from the concatenated interleaved sequence;

A modulation symbol corresponding to the repeatedly transmitted data is determined based on the sequence whose length is the second number of bits.
The method of claim 35, wherein the sequence having a length of the second number of bits comprises:

From the concatenated interleaved sequence, the sequence determined in order is a sequence of the second number of bits;

Or, from the concatenated interleaved sequence, a sequence of the second number of bits determined according to a preset rule.
The method according to any one of claims 32 to 36, wherein the first number of bits is the number of bits of each segment code block used for repeated transmission in all uplink time slots, and the second number of bits is flexible The number of bits used for repeated transmission that the time slot can carry, the first number of bits is the same or different from the second number of bits;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.
The method of any one of claims 32 to 37, wherein,

The second number of bits is determined based on a second modulation scheme, and the second modulation scheme is the same as or different from the modulation scheme corresponding to the full uplink time slot.
The method of claim 22, wherein the network device performs symbol mapping at the time slot, comprising:

The network device determines, based on the first number of bits and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

mapping the modulation symbols to resource elements according to a first manner, the first manner is the same as the symbol mapping manner of all uplink time slots;

The resource elements corresponding to the flexible time slots not used for repeated transmission are punctured.
The method of claim 22, wherein the network device performs symbol mapping at the time slot, comprising:

The network device determines, based on the first number of bits and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

The modulation symbols corresponding to the flexible timeslots used for repeated transmission are mapped to the resource elements according to a first manner, which is the same as the symbol mapping manner of the full uplink timeslots.
The method of claim 40, wherein the network device performs symbol mapping in the time slot, comprising:

The network device punctures modulation symbols corresponding to resource elements not used for repeated transmission in the flexible timeslot.
The method of any one of claims 22 to 41, wherein the method further comprises:

The network device determines the soft bit information of the received downlink data, and the time slot for transmitting the downlink data includes flexible symbols and/or downlink symbols;

The network device maps the soft bit information to bits corresponding to the downlink data.
A terminal device, the terminal device includes:

A first processing unit, configured to determine a time slot for repeated transmission, the time slot including flexible symbols and/or symbols with the same direction as the repeated transmission; and performing symbol mapping in the time slot.
The terminal device of claim 43, wherein,

The first processing unit is configured to determine modulation symbols corresponding to data repeatedly transmitted in a flexible time slot, and map the modulation symbols to resource elements corresponding to the flexible time slot in sequence, where the flexible time slot at least includes all the describe flexible symbols;

The number of modulation symbols is greater than or equal to the number of resource elements.
The terminal device of claim 43, wherein,

The first processing unit is configured to determine a modulation symbol corresponding to the data repeatedly transmitted in the flexible time slot, and map the modulation symbol to the resource element corresponding to the flexible time slot based on the first sequence;

The flexible timeslot includes at least the flexible symbols, and the number of the modulation symbols is greater than or equal to the number of the resource elements.
46. The terminal device of claim 45, wherein the length of the first sequence is the same as the number of modulation symbols.
The terminal device according to claim 45 or 46, wherein,

The first processing unit is configured to perform dot product processing on the first sequence and the modulation symbol; and map the modulation symbol corresponding to the first value as a result of the dot product to the resource element.
The terminal device of claim 47, wherein the number of modulation symbols corresponding to the first value is equal to the number of data symbols that can be transmitted by the flexible timeslot.
The terminal device according to any one of claims 44 to 48, wherein,

The first processing unit is configured to determine the modulation symbol corresponding to the repeatedly transmitted data based on a first number of bits and a first modulation mode.
The terminal device of claim 49, wherein,

The first number of bits is the same as the number of bits of each segmented code block used for repeated transmission in the full uplink time slot;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.
The terminal device of claim 43, wherein,

The first processing unit is configured to determine the modulation symbols corresponding to the data repeatedly transmitted in the flexible time slot based on the second number of bits and the second modulation mode; and map the modulation symbols to the corresponding data of the flexible time slot one by one. resource elements, the flexible time slot includes at least the flexible symbol.
[Correction 25.01.2021 under Rule 91]

The terminal device of claim 51, wherein,

The second number of bits is the same as or different from the number of bits used for repeated transmission that can be carried by the full uplink time slot;

And/or, the second modulation mode is the same as or different from the modulation mode corresponding to all uplink time slots.
The terminal device of claim 43, wherein,

The first processing unit is configured to, based on the first number of bits, the second number of bits and the first modulation mode, determine the modulation symbols corresponding to the data repeatedly transmitted in the flexible time slot; and map the modulation symbols to the modulation symbols one by one. Resource elements corresponding to flexible time slots, where the flexible time slots include at least the flexible symbols.
The terminal device of claim 53, wherein,

the first processing unit configured to perform bit selection on each segmented code block of the repeatedly transmitted data based on a first number of bits and a first modulation scheme;

From the sequence obtained by the bit selection, determine a new sequence based on the second number of bits to perform interleaving;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

The modulation symbol corresponding to the repeatedly transmitted data is determined based on the concatenated interleaved sequence.
The terminal device of claim 54, wherein the new sequence comprises:

A sequence determined in order from the sequences selected from the bits;

Or, a sequence determined according to a preset rule from the sequences obtained by the bit selection.
The terminal device of claim 53, wherein,

the first processing unit, configured to perform bit selection and bit interleaving on each segmented code block of the repeatedly transmitted data based on a first number of bits and a first modulation scheme;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

determining a sequence having a length of the second number of bits from the concatenated interleaved sequence;

A modulation symbol corresponding to the repeatedly transmitted data is determined based on the sequence whose length is the second number of bits.
The terminal device of claim 56, wherein the sequence of the second number of bits of length comprises:

From the concatenated interleaved sequence, the sequence determined in sequence is a sequence of the second number of bits;

Or, from the concatenated interleaved sequence, a sequence with a length of the second number of bits determined according to a preset rule.
The terminal device according to any one of claims 53 to 57, wherein,

The first number of bits is the number of bits of each segment code block used for repeated transmission in the full uplink time slot, the second number of bits is the number of bits that can be carried by the flexible time slot for repeated transmission, and the first number of bits is used for repeated transmission. A number of bits is the same as or different from said second number of bits;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.
The terminal device according to any one of claims 53 to 58, wherein,

The second number of bits is determined based on a second modulation scheme, and the second modulation scheme is the same as or different from the modulation scheme corresponding to the full uplink time slot.
The terminal device of claim 43, wherein,

The first processing unit is configured to determine, based on a first number of bits and a first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

mapping the modulation symbols to resource elements according to a first manner, the first manner is the same as the symbol mapping manner of all uplink time slots;

The resource elements corresponding to the flexible time slots not used for repeated transmission are punctured.
The terminal device of claim 43, wherein,

The first processing unit is configured to determine, based on a first number of bits and a first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

The modulation symbols corresponding to the flexible timeslots used for repeated transmission are mapped to the resource elements according to a first manner, which is the same as the symbol mapping manner of the full uplink timeslots.
The terminal device of claim 61, wherein,

The first processing unit is configured to puncture the modulation symbols corresponding to the resource elements not used for repeated transmission in the flexible time slot.
The terminal device according to any one of claims 43 to 62, wherein,

The first processing unit is further configured to determine soft bit information of the received downlink data, the time slot for transmitting the downlink data includes flexible symbols and/or downlink symbols; and map the soft bit information to the downlink data corresponding bits.
A network device, the network device comprising:

A second processing unit configured to determine a time slot for repeated transmission, the time slot including flexible symbols and/or symbols in the same direction as the repeated transmission; and performing symbol mapping in the time slot.
The network device of claim 64, wherein,

The second processing unit is configured to determine the modulation symbols corresponding to the data repeatedly transmitted in the flexible time slot; map the modulation symbols to the resource elements corresponding to the flexible time slots in sequence; the number of the modulation symbols is greater than or Equal to the number of resource elements, the flexible slot includes at least the flexible symbols.
The network device of claim 64, wherein,

The second processing unit is configured to determine the modulation symbol corresponding to the data repeatedly transmitted in the flexible time slot; and map the modulation symbol to the resource element corresponding to the flexible time slot based on the first sequence;

The number of modulation symbols is greater than or equal to the number of resource elements, and the flexible time slot includes at least the flexible symbols.
66. The network device of claim 66, wherein the length of the first sequence is the same as the number of modulation symbols.
A network device according to claim 66 or 67, wherein,

The second processing unit is configured to perform dot product processing on the first sequence and the modulation symbol; and map the modulation symbol corresponding to the first value as a result of the dot product to the resource element.
The network device of claim 68, wherein the number of modulation symbols corresponding to the first value is equal to the number of data symbols that can be transmitted by the flexible timeslot.
The network device of any one of claims 65 to 69, wherein,

The second processing unit is configured to determine the modulation symbol corresponding to the repeatedly transmitted data based on the first number of bits and the first modulation mode.
The network device of claim 70, wherein,

The first number of bits is the same as the number of bits of each segmented code block used for repeated transmission in the full uplink time slot;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.
The network device of claim 64, wherein,

The second processing unit is configured to determine, based on the second number of bits and the second modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot at least includes the flexible symbol;

The modulation symbols are mapped to resource elements corresponding to the flexible timeslots one by one.
The network device of claim 72, wherein,

The second number of bits is the same as or different from the number of bits used for repeated transmission that can be carried by the full uplink time slot;

And/or, the second modulation mode is the same as or different from the modulation mode corresponding to all uplink time slots.
The network device of claim 64, wherein,

The second processing unit is configured to determine, based on the first number of bits, the second number of bits and the first modulation mode, the modulation symbols corresponding to the data repeatedly transmitted in the flexible timeslot; and map the modulation symbols to the modulation symbols one by one. Resource elements corresponding to flexible time slots, where the flexible time slots include at least the flexible symbols.
The network device of claim 74, wherein,

the second processing unit configured to perform bit selection on each segmented code block of the repeatedly transmitted data based on a first number of bits and a first modulation scheme;

From the sequence obtained by the bit selection, determine a new sequence based on the second number of bits to perform interleaving;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

The modulation symbol corresponding to the repeatedly transmitted data is determined based on the concatenated interleaved sequence.
The network device of claim 75, wherein the new sequence comprises:

A sequence determined in order from the sequences selected from the bits;

Or, a sequence determined according to a preset rule from the sequences obtained by the bit selection.
The network device of claim 74, wherein,

the second processing unit configured to perform bit selection and bit interleaving on each segmented code block of the repeatedly transmitted data based on the first number of bits and the first modulation scheme;

Connect the interleaved sequences after the interleaving process of the actually transmitted segmented code blocks;

determining a sequence having a length of the second number of bits from the concatenated interleaved sequence;

A modulation symbol corresponding to the repeatedly transmitted data is determined based on the sequence whose length is the second number of bits.
The network device of claim 77, wherein the sequence of the second number of bits of length comprises:

From the concatenated interleaved sequence, the sequence determined in order is a sequence of the second number of bits;

Or, from the concatenated interleaved sequence, a sequence with a length of the second number of bits determined according to a preset rule.
The network device according to any one of claims 74 to 78, wherein the first number of bits is the number of bits of each segment code block used for repeated transmission in a full uplink time slot, and the second number of bits is The number of bits used for repeated transmission that can be carried by the flexible time slot, the first number of bits is the same or different from the second number of bits;

And/or, the first modulation mode is the same as the modulation mode corresponding to all uplink time slots.
A network device according to any one of claims 74 to 79, wherein,

The second number of bits is determined based on a second modulation scheme, and the second modulation scheme is the same as or different from the modulation scheme corresponding to the full uplink time slot.
The network device of claim 64, wherein,

The second processing unit is configured to determine, based on the first number of bits and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot includes at least the flexible symbol;

mapping the modulation symbols to resource elements according to a first manner, the first manner is the same as the symbol mapping manner of all uplink time slots;

The resource elements corresponding to the flexible time slots not used for repeated transmission are punctured.
The network device of claim 64, wherein,

The second processing unit is configured to determine, based on the first number of bits and the first modulation mode, a modulation symbol corresponding to data repeatedly transmitted in a flexible time slot, where the flexible time slot includes at least the flexible symbol;

The modulation symbols corresponding to the flexible timeslots used for repeated transmission are mapped to the resource elements according to a first manner, which is the same as the symbol mapping manner of the full uplink timeslots.
The network device of claim 82, wherein,

The second processing unit is configured to puncture the modulation symbols corresponding to the resource elements not used for repeated transmission in the flexible time slot.
A network device according to any one of claims 64 to 83, wherein,

The second processing unit is further configured to determine soft bit information of the received downlink data, and the time slot for transmitting the downlink data includes flexible symbols and/or downlink symbols;

The soft bit information is mapped to bits corresponding to the downlink data.
A terminal device comprising a processor and a memory for storing a computer program that can run on the processor, wherein,

When the processor is configured to execute the computer program, the steps of the repeated transmission method described in any one of claims 1 to 21 are executed.
A network device comprising a processor and a memory for storing a computer program executable on the processor, wherein,

When the processor is configured to execute the computer program, the steps of the repeated transmission method described in any one of claims 22 to 42 are executed.
A storage medium storing an executable program, when the executable program is executed by a processor, the repeated transmission method according to any one of claims 1 to 21 is implemented.
A storage medium storing an executable program, when the executable program is executed by a processor, the repeated transmission method according to any one of claims 22 to 42 is implemented.
A computer program product comprising computer program instructions that cause a computer to perform the repeated transmission method of any one of claims 1 to 21.
A computer program product comprising computer program instructions that cause a computer to perform the repeated transmission method as claimed in any one of claims 22 to 42.
A computer program that causes a computer to perform the repeated transmission method as claimed in any one of claims 1 to 21.
A computer program that causes a computer to execute the repeated transmission method as claimed in any one of claims 22 to 42.
A chip, comprising: a processor for calling and running a computer program from a memory, so that a device on which the chip is installed executes the repeated transmission method according to any one of claims 1 to 21.
A chip, comprising: a processor for calling and running a computer program from a memory, so that a device on which the chip is installed executes the repeated transmission method according to any one of claims 22 to 42.