WO2021147104A1

WO2021147104A1 - Data transmission method and apparatus

Info

Publication number: WO2021147104A1
Application number: PCT/CN2020/074029
Authority: WO
Inventors: 申建平; 花梦
Original assignee: 华为技术有限公司
Priority date: 2020-01-23
Filing date: 2020-01-23
Publication date: 2021-07-29
Also published as: CN113439468A; CN113439468B

Abstract

Disclosed by the present application are a data transmission method and apparatus. The method comprises: receiving first downlink control information (DCI), wherein the first DCI is used to indicate first scheduling information of a first resource, and the type of the first resource is a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH); receiving second DCI, wherein the second DCI is used to indicate second scheduling information of a second resource, and the type of the second resource is a PUSCH or a PDSCH; and when the first scheduling information conflicts with the second scheduling information, transmitting data on the first resource or the second resource according to one or more of credibility of the DCI, time domain information of the first resource and time domain information of the second resource.

Description

Data transmission method and device

Technical field

This application relates to the field of communication technology, and in particular to a data transmission method and device.

Background technique

For next-generation wireless (next radio, NR) communication systems, the physical uplink shared channel (physical uplink shared channel) occupied by the sent data can be indicated by sending downlink control information (DCI) through network equipment, PUSCH) resources, and in turn, the terminal device can send data on the PUSCH; the network device can send DCI to indicate the physical downlink shared channel (PDSCH) resources occupied by the received data. Furthermore, the terminal device can send data on the PUSCH. Data is received on PDSCH.

In order to ensure that data transmission does not conflict, for any two PUSCH data transmission or any two PDSCH data reception, it is necessary to ensure that there is no overlap in the time domain. Further, when the terminal device transmits data on the PUSCH, it needs to follow the principle of scheduling first, that is, blindly detected DCI first, the indicated PUSCH needs to be sent first, and then the detected DCI, and then the data on the indicated PUSCH. send. In addition, for data transmission under the hybrid automatic repeat request (HARQ) mechanism, for the same HARQ process, the network device sends DCI to the terminal device to instruct the terminal device to send data on the PUSCH indicated by the DCI After the terminal device sends data on the PUSCH indicated by the DCI, the network device determines to send the next DCI of the same HARQ process according to the result of the data sent by the terminal device, which is used to indicate the next PUSCH resource, for example, if it is determined If the data sent by the terminal device does not need to be retransmitted, it can indicate the PUSCH resource occupied by the next newly transmitted data of the HARQ process. If it is determined that the data sent by the terminal device needs to be retransmitted, it can indicate the next DCI of the same HARQ process. , Used to instruct the terminal device to send retransmission data. Therefore, after the terminal device receives a DCI, until the terminal device sends data according to the PUSCH indicated by the DCI, it should not receive other DCIs of the same HARQ process.

For the terminal equipment to receive PDSCH data, the terminal equipment must follow the principle of scheduling first, that is, blindly detecting the DCI first, the indicated PDSCH needs to be received first, and then the detected DCI, the data on the indicated PDCCH is received later. In addition, for a same HARQ process, it is necessary to first receive on the PDSCH indicated by a DCI, and then perform an indication of the next DCI, so as to ensure that the reception of data in the same HARQ process does not conflict.

However, in the actual transmission process, due to problems such as channel conditions or terminal resolution capabilities, the terminal device may first blindly detect the first DCI, which is used to instruct the terminal device to send data on the first PUSCH, and then detect the second DCI. , Used to instruct the terminal device to send data on the second PUSCH; and the first PUSCH is located after the second PUSCH, or the first PUSCH and the second PUSCH overlap, resulting in the terminal device not being able to correctly send corresponding data on the PUSCH. Or, the first DCI that the terminal blindly detects first is used to instruct the terminal device to receive data on the first PDSCH, and then the second DCI is detected, which is used to instruct the terminal device to receive data on the second PDSCH; and the first The PDSCH is located after the second PDSCH, or the first PDSCH and the second PDSCH overlap, resulting in the terminal device being unable to correctly receive the corresponding data on the PDSCH.

Summary of the invention

This application provides a data transmission method and device to avoid the conflict problem of terminal equipment DCI scheduling, and ensure that the terminal equipment correctly receives the corresponding data on the PDSCH, or the terminal equipment correctly transmits the corresponding data on the PUSCH.

In the first aspect, the embodiments of the present application provide a data transmission method. By receiving the first DCI and the second DCI, when the first scheduling information conflicts with the second scheduling information, according to the reliability of the DCI and the value of the first resource One or more of the time domain information and the time domain information of the second resource, the data is transmitted on the first resource, or the data is transmitted on the second resource, the reliability of the DCI includes: the reliability of the first DCI Reliability and the credibility of the second DCI. Wherein, the first DCI is used to indicate the first scheduling information of the first resource, the type of the first resource is PUSCH, or PDSCH; the second DCI is used to indicate the second scheduling information of the second resource; the type of the second resource is PUSCH , Or PDSCH.

Through the above method, by comparing the first DCI and the second DCI, when it is determined that the first scheduling information conflicts with the second scheduling information, according to the reliability of the DCI, the time domain information of the first resource and the time domain information of the second resource One or more of the data is transmitted on the first resource, or the data is transmitted on the second resource, so as to avoid the situation where it is impossible to know whether there is a conflict between the first scheduling information and the second scheduling information in the prior art. Data is transmitted on the first resource indicated by a DCI and data is transmitted on the second resource indicated by the second DCI, resulting in a problem of errors in the transmitted data.

A possible design, the first scheduling information conflicts with the second scheduling information, may include: the first resource and the second resource are of the same type, and the HARQ process identification (ID) of the first resource and the second resource are the same, And the time of receiving the second DCI is earlier than the time of transmitting data on the first resource; or, the first resource and the second resource are of the same type, the HARQ process IDs of the first resource and the second resource are different, and the first resource is different from the The time domain symbols of the second resource overlap. Or, the first resource and the second resource are of the same type, the HARQ process IDs of the first resource and the second resource are different, and the time domain symbol of the second resource is earlier than the time domain symbol of the first resource.

Through the above method, it is helpful to confirm the different situations of the conflict between the first scheduling information and the second scheduling information, so as to avoid the situation in the prior art that it is impossible to know whether there is a conflict between the first scheduling information and the second scheduling information, the first DCI indicates The problem of transmitting data on the first resource and transmitting data on the second resource indicated by the second DCI results in an error in the transmitted data.

A possible design is to transmit data on the first resource when the credibility of the first DCI is greater than or equal to the credibility of the second DCI; or, when the credibility of the first DCI is less than the credibility of the second DCI When credibility, data is transmitted on the second resource.

By comparing the credibility of the first DCI with the credibility of the second DCI, the resource indicated by the DCI with greater credibility is used as the resource for data transmission, thereby improving the performance of data transmission and the reliability of data transmission.

In a possible design, the time domain information of the first resource includes the time domain symbol of the first resource; the time domain information of the second resource includes the time domain symbol of the second resource; the time domain symbol of the second resource is earlier than the first resource. The time domain symbol of the resource, or when the time domain symbol of the first resource and the second resource overlap, the data is transmitted on the first resource or the second resource.

Through the above method, on the premise that there is no scheduling information conflict of the same communication type in the first scheduling information scheduling after the second scheduling information is determined, the first data transmission is performed on the first resource indicated by the first scheduling information. Improve the flexibility and reliability of data transmission.

A possible design, the credibility of the first DCI includes one or more of the following: the signal-to-noise ratio of the soft demodulation information of the first DCI, and the average value of the signal-to-noise ratio of the first DCI and the historical signal-to-noise ratio Difference; the credibility of the second DCI includes one or more of the following: the signal-to-noise ratio of the soft demodulation information of the second DCI, and the difference between the signal-to-noise ratio of the second DCI and the average value of the historical signal-to-noise ratio.

Through the signal-to-noise ratio of the DCI soft demodulation information, or the difference between the DCI's signal-to-noise ratio and the average value of the historical signal-to-noise ratio, the reliability of the DCI can be determined. Furthermore, the availability of the resources indicated on the DCI can be effectively evaluated. According to the above embodiments, when the resource indicated by the DCI with greater credibility is used as the resource for transmitting data, the terminal device can use the resource with high credibility when transmitting data, thereby effectively improving The performance of data transmission improves the reliability of data transmission.

A possible design is that the time interval between the time when the first DCI is received and the time when data is transmitted on the first resource is greater than the first time length; the first time length is determined according to the terminal equipment (user equipment, UE) capability; The time interval between the time to the second DCI and the time to transmit data on the second resource is greater than the second duration; the second duration is determined according to the UE capability.

Through the above method, it can be determined whether the time interval between the first DCI and the first resource is less than the processing capability of the terminal device. If it is determined to be less than the processing capability of the terminal device, it is determined that the first resource indicated by the first DCI is not available, and the first resource is not available. The first resource indicated by the DCI is discarded. Or, based on judging whether the time interval between the second DCI and the second resource is less than the processing capability of the terminal device, if it is determined to be less than the processing capability of the terminal device, it is determined that the second resource indicated by the second DCI is not available, and the second DCI is indicated The second resource is discarded. Avoid terminal equipment wasting unnecessary processing resources.

In the second aspect, an embodiment of the present application provides a data transmission device, which has a function of implementing the steps performed in the method example of the first aspect described above (hereinafter referred to as the device). The device can be located in the terminal device or the chip corresponding to the terminal device. The above-mentioned functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible implementation, the structure of the device includes a processing unit and a transceiving unit. These units can execute the corresponding steps or functions performed by the first device in the method example of the first aspect described above, including the transceiving unit and the processing unit. The transceiver unit is used to receive the first DCI; the first DCI is used to indicate the first scheduling information of the first resource, and the type of the first resource is PUSCH or PDSCH; the second DCI is received, and the second DCI is used to indicate the first The second scheduling information of the second resource; the type of the second resource is PUSCH or PDSCH; the processing unit is used for when the first scheduling information conflicts with the second scheduling information, according to the reliability of the DCI and the time domain of the first resource One or more of the information and the time domain information of the second resource, the data is transmitted on the first resource, or the data is transmitted on the second resource; the credibility of the DCI includes: the credibility of the first DCI and the first 2. The reliability of DCI.

A possible design, the processing unit, is specifically used to: transmit data on the first resource when the credibility of the first DCI is greater than or equal to the credibility of the second DCI; or, when the credibility of the first DCI is When the degree is less than the credibility of the second DCI, the data is transmitted on the second resource.

A possible design, the processing unit, is specifically used to: when the time domain symbol of the second resource is earlier than the time domain symbol of the first resource, or when the time domain symbols of the first resource and the second resource overlap, perform the Data is transmitted on a resource or a second resource; the time domain information of the first resource includes the time domain symbol of the first resource; the time domain information of the second resource includes the time domain symbol of the second resource.

A possible design, the processing unit, is further configured to: determine that the time interval between the time when the first DCI is received and the time when data is transmitted on the first resource is greater than the first time length; the first time length is determined according to the terminal equipment UE capability It is determined that the time interval between the time when the second DCI is received and the time when data is transmitted on the second resource is greater than the second time period; the second time period is determined according to the UE capability.

In the third aspect, the communication device provided by the present application has the function of implementing the above method, and it includes means for executing the first aspect, any one of the possible implementation manners of the first aspect, the described steps or the function corresponding means. . The steps or functions can be realized by software, or by hardware (such as a circuit), or by a combination of hardware and software. Wherein, the device may be a terminal device or a chip on the terminal device.

In a possible implementation, the foregoing apparatus includes one or more processors and communication units. One or more processors are configured to support the communication device to perform corresponding functions in the above-mentioned methods. Optionally, the communication device may further include one or more memories, where the memory is used for coupling with the processor and stores necessary program instructions and/or data of the device. One or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited.

In another possible implementation, the foregoing communication device includes a transceiver, a processor, and a memory. The processor is used to control the transceiver or the input/output circuit to send and receive signals, the memory is used to store a computer program, and the processor is used to run the computer program in the memory so that the communication device executes any one of the first aspect and the first aspect. One possible way to accomplish the method.

In a possible implementation, the foregoing communication device includes one or more processors and communication units. One or more processors are configured to support the communication device to perform corresponding functions in the above-mentioned methods. Optionally, the communication device may further include one or more memories, where the memories are used for coupling with the processor and store necessary program instructions and/or data for the terminal device. One or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited. The communication device may be located in the terminal device or be a chip on the terminal device.

In another possible implementation, the foregoing device includes a transceiver, a processor, and a memory. The processor is used to control the transceiver or the input/output circuit to send and receive signals, the memory is used to store a computer program, and the processor is used to run the computer program in the memory, so that the device can execute any one of the first aspect and the first aspect. The method used by the originating device or the receiving device in the implementation mode.

In a fourth aspect, a computer-readable storage medium is provided for storing a computer program, and the computer program includes instructions for executing the method in the first aspect and any one of the possible implementation manners of the first aspect.

In a fifth aspect, a computer program product is provided. The computer program product includes: computer program code, which when the computer program code runs on a computer, causes the computer to execute any one of the foregoing first aspect and any one of the possible implementation manners of the first aspect In the method.

In a sixth aspect, a communication device, such as a chip system, is provided, which is connected to a memory, and is used to read and execute a software program stored in the memory, and execute any one of the above-mentioned first aspect and the first aspect. The method in the way.

Description of the drawings

1A-1B are schematic diagrams of a network architecture of a communication system to which an embodiment of this application is applicable;

2 is a schematic diagram of data transmission using multiple parallel HARQs in an embodiment of the application;

3A-3B are schematic diagrams of the sending end device sending DCI to the receiving end device in an embodiment of the application;

4A-4C are schematic diagrams of overlapping time-frequency resources in an embodiment of this application;

5A-5B are schematic diagrams of the sending end device sending DCI to the receiving end device according to an embodiment of the application;

6A-6B are schematic diagrams of the sending end device sending DCI to the receiving end device according to an embodiment of the application;

FIG. 7 is a schematic flowchart of a method for sending data provided in an embodiment of the application;

8A-8B are schematic diagrams of a method for sending and receiving data provided in an embodiment of this application;

9A-9B are schematic flowcharts of a data receiving method provided in an embodiment of this application;

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of this application;

FIG. 11 is a schematic diagram of another structure of a communication device provided by an embodiment of this application.

Detailed ways

The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WIMAX) communication system, fifth generation (5G) The system or new radio (NR), or applied to future communication systems or other similar communication systems, etc.

The technical solutions of the embodiments of the present application can be applied to unmanned driving (unmanned driving), driver assistance (ADAS), intelligent driving (intelligent driving), connected driving, and intelligent network driving (Intelligent Network Driving). ), car sharing, smart/intelligent car, digital car, unmanned car/driverless car/pilotless car/automobile, Internet of vehicles (IoV) , Autonomous vehicles (self-driving car, autonomous car), cooperative vehicle infrastructure (CVIS), intelligent transportation (intelligent transport system, ITS), vehicle communication (vehicular communication) and other technical fields.

In addition, the technical solutions provided by the embodiments of the present application can be applied to cellular links, and can also be applied to links between devices, such as device-to-device (D2D) links. D2D link or V2X link can also be called side link, auxiliary link or side link. In the embodiments of the present application, the aforementioned terms all refer to links established between devices of the same type, and have the same meaning. The so-called devices of the same type can be the link between the terminal device and the terminal device, the link between the base station and the base station, and the link between the relay node and the relay node. This application The embodiment does not limit this.

In order to make the embodiments of the present invention clearer, some contents and concepts related to the embodiments of the present invention are introduced here in a unified manner.

1) Terminal devices, also called terminals, include devices that provide users with voice or data connectivity, such as handheld devices with wireless connection functions, or processing devices connected to wireless modems. The terminal device can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN. The terminal equipment may include user equipment (UE), V2X terminal equipment, wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station) , Remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device) and so on. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, and computer-built mobile devices. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants, PDA), and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The various terminal devices described above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be regarded as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ). When the terminal device is a vehicle-mounted terminal device, the vehicle-mounted terminal device may not only feed back the HARQ response information corresponding to the downlink scheduling, but also the HARQ response information corresponding to the side-line scheduling. Therefore, the HARQ response information described later in the embodiment of the present invention may include HARQ response information corresponding to side row data in addition to the HARQ response information corresponding to the downlink data.

2) Network equipment, such as access network (AN) equipment, radio access network (RAN) equipment, and access network equipment such as base stations (e.g., access points), may refer to access A device in a network that communicates with wireless terminal devices through one or more cells at the air interface. The base station can be used to convert received air frames and Internet Protocol (IP) packets to each other, and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The network equipment can also coordinate the attribute management of the air interface. For example, the network equipment may include a long term evolution (LTE) system or an evolved base station (NodeB or eNB or e-NodeB, evolved NodeB) in a long term evolution-advanced (LTE-A) system, Or it may also include the next generation node B (gNB) or the next generation evolved base station (next generation node B, gNB) in the new radio (NR) system of the fifth generation mobile communication technology (the 5th generation, 5G) nodeB, ng-eNB), en-gNB (enhanced next generation node B, gNB): enhanced next-generation base stations; it may also include the centralized unit in the cloud radio access network (Cloud RAN) system unit, CU) and distributed unit (distributed unit, DU), or may also include a relay device, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the network device may also include a core network device. The core network device includes, for example, a network device that processes and forwards user signaling and data. In a 4G system, a core network device is, for example, a mobility management entity (MME). The MME is a key control node of the access network of the LTE system defined by the 3rd generation partnership project (3GPP) protocol. It is responsible for the positioning and paging process of idle mode terminal devices, including relays. Simply put, MME is the core network equipment responsible for signaling processing. Or, in a 5G system, the core network equipment includes, for example, core network equipment such as an access management network element, a session management network element, or a user plane gateway. The user plane gateway can be a server with functions such as mobility management, routing, and forwarding of user plane data, and is generally located on the network side, such as a serving gateway (SGW) or a packet data network gateway (PGW) Or user plane function entity (UPF).

3) Air interface resources. In a cell, base stations and UEs can transmit data through air interface (user to network interface UE, Uu) resources. Air interface resources may include time domain resources and frequency domain resources, and time domain resources and frequency domain resources may also be referred to as time-frequency resources. The frequency domain resource may be located in a set frequency range, the frequency range may also be called a band or frequency band, and the width of the frequency domain resource may be called a bandwidth (BW).

4) Time-frequency resources. Time-frequency resources can be resource grids, including time domain and frequency domain. For example, the time domain unit may be a symbol, and the frequency domain unit may be a subcarrier. The smallest resource unit in the resource grid can be called a resource unit (RE). One resource block (resource block, RB) may include one or more subcarriers in the frequency domain, for example, it may be 12 subcarriers. A slot can include one or more symbols in the time domain. For example, a slot in NR can include 14 symbols (in the case of cyclic prefix (CP)) or 12 symbols (in the case of extended cyclic prefix) . Frequency domain resources are usually in units of orthogonal frequency division multiple access (OFDM) symbols, sub-slots, time slots, subframes or frames . It should be noted that the terms "time-frequency resource" and "resource" in the embodiments of the present application can be used interchangeably.

5) Hybrid automatic repeat request (HARQ) is a technology that combines forward error correction coding and automatic repeat request. For example, the network device can allocate and indicate the time-frequency resource used to send channel state information (CSI) and HARQ response information to the terminal, so that the terminal device sends the corresponding HARQ response information on the indicated time-frequency resource .

In order to improve the reliability of data transmission in communication, the HARQ feedback retransmission mechanism is introduced. For example, in downlink communication, the process of downlink data feedback and retransmission is shown in Fig. 2 and includes the following steps.

Step 1. The network device newly transmits downlink data to the terminal device.

The network device sends downlink data through the PDSCH on the time-frequency resource whose time-domain position is the time slot n. The PDCCH is used to instruct the terminal equipment to feed back the HARQ response information corresponding to the downlink data on the time-frequency resource of the time slot n+k in the time domain position.

Step 2: The terminal device receives the newly transmitted downlink data from the network device and decodes the downlink data. If the decoding fails, the terminal device returns a negative acknowledgement (NACK) message to the network device.

When the terminal device receives the data on the time-frequency resource whose time domain position is timeslot n, it feeds back HARQ response information on the time-frequency resource whose time domain position is timeslot n+k. For example, if it is determined that the decoding has failed, the terminal device can feed back the HARQ response information on the time-frequency resource with the time-domain position of time slot n+k as a NACK message; if it is determined that the decoding is successful, the terminal device can be in the time-domain position. The HARQ response information fed back on the time-frequency resource of slot n+k is an acknowledgement (acknowledgement, ACK) message.

Step 3: After receiving the NACK message, the network device retransmits the downlink data to the terminal device.

Step 4. After receiving the downlink data retransmitted by the network device, the terminal device returns an ACK message to the network device if it decodes the retransmitted downlink data successfully.

For example, in uplink communication, the process of uplink data feedback and retransmission may include the following steps.

Step 1. The network equipment schedules the terminal equipment on the PDCCH for newly transmitted data for uplink data.

Specifically, the network device may send the DCI to the terminal device through the PDCCH, and the DCI may be used to instruct the terminal device to transmit the newly transmitted data on the first PUSCH.

Step 2: The terminal device sends uplink data to the network device based on the scheduling of step 1.

The terminal device decodes the DCI sent by the network device, obtains the first PUSCH indicated by the DCI, and confirms that the data transmitted on the first PUSCH is newly transmitted data, and further, the terminal device transmits the newly transmitted data on the first PUSCH.

Step 3: After receiving the uplink data, the network device decodes the uplink data. If the decoding fails, the network equipment schedules the terminal equipment on the PDCCH to retransmit the uplink data.

In step 4, the terminal device retransmits the uplink data to the network device based on the scheduling in step 3.

The following specifically introduces the content related to HARQ through two parts (a) to (b).

(a) HARQ process (HARQ process)

HARQ uses stop-and-wait protocol to send data. In the stop-and-wait protocol, after the sender device sends a transport block (TB), it stops and waits for the confirmation message. The receiving end will feed back HARQ response information to the TB, for example, the receiving end feeds back an ACK message to the TB, or the receiving end feeds back a NACK message to the TB. However, after each transmission, the sending end device stops and waits for confirmation, which will result in very low throughput. Therefore, multiple parallel HARQ processes can be used: when one HARQ process is waiting for confirmation, the sending end device can use another HARQ process to continue sending data. Exemplarily, referring to FIG. 2, multiple parallel HARQ processes can be used: when one HARQ process is waiting for confirmation information, the sending end device can use another HARQ process to continue sending data. Multiple parallel HARQ processes can be combined into one HARQ entity. Each terminal device can have one HARQ entity, which can maintain a certain number of parallel HARQ processes. Each process has an identity (ID). The HARQ entity will The response information and the transport block received on the DL-SCH are sent to the corresponding HARQ process. In the embodiment of the present application, one HARQ entity maintains or manages K HARQ processes (HARQ processes) to implement the HARQ feedback retransmission mechanism. Among them, K is a positive integer, and the value of K can be pre-arranged through a protocol, or it can be configured by the network device for the terminal device. For example, the value of K can be 16. For example, for a terminal device, it may include M HARQ entities for sidelink communication and N HARQ entities for air interface Uu communication. In carrier aggregation, each carrier aggregation unit has its own HARQ entity, and usually one communication carrier corresponds to one HARQ entity. Take the following downlink communication as an example. When there is one carrier used for downlink communication, one terminal device includes one HARQ entity for downlink communication. For another example, when there are Q carriers used for downlink communication, one terminal device may include Q HARQ entities for downlink communication. If space diversity is defined in the physical layer, one or two transmission blocks can be received in one subframe, and the transmission blocks are all related to one HARQ entity. If two TBs are transmitted in parallel in one transmission time interval (TTI), each TB has its own independent HARQ confirmation information, and one HARQ entity includes two HARQ process sets.

It should be noted that, no matter for side link communication or Uu port communication, one HARQ process is used for communication of one TB. For example, HARQ process 1 is used for communication of TB1, and HARQ process 1 can be used for communication of other TBs after the transmission of TB1 ends. Before the transmission of TB1 ends, the transmission of other TBs cannot occupy HARQ process 1. In other words, after the HARQ process 1 is occupied by the transmission of TB1, it cannot be used for the transmission of other TBs before the transmission of the TB is completed. In addition, in the embodiment of the present application, the HARQ process ID is used to indicate the HARQ process, and the HARQ process IDs of different HARQ processes maintained by the same HARQ entity are different.

(b) The processing mechanism of the receiving end equipment for newly transmitted data and retransmitted data

Each HARQ process has a corresponding buffer (for example, HARQ buffer or soft buffer) on the receiving end device (which may be a terminal device or a network device), so as to perform soft combining and decoding on the received data.

After the receiving end device receives the newly transmitted data sent by the transmitting end device using a HARQ process, it can put the received newly transmitted data into the buffer (for example, HARQ buffer or soft buffer) corresponding to the HARQ process, and the receiving end device The stored data can be used to perform joint processing with the last received data (for example, currently received data) (for example, in a combined manner or in a combined manner) to enhance decoding reliability. If the decoding fails, when the retransmitted data of the newly transmitted data is received again, the received retransmitted data can be combined with the newly transmitted data previously stored in the buffer, put into the buffer, and decoded again. This way It can be called soft combining decoding. Specifically, the HARQ mechanism may include chase (combining) HARQ and incremental redundancy (incremental redundancy, IR) HARQ. For chasing HARQ, the transmitter (for example, the encoder) repeatedly sends the same data every time it retransmits. The receiving end device (e.g., a decoder) performs decoding (e.g., attempts to decode) the data by combining all previously received data. For example, the decoder combines the currently received retransmitted data with the erroneously transmitted data from the history of previous transmissions (eg, previously received and stored) for decoding. When decoding, a log-likelihood ratio (LLR) can be used for soft decoding. LLR is used to indicate the soft decision of whether the coded bit is 1 or 0. In the Long Term Evolution (LTE) system, the entire round-trip time (RTT) LLR can be stored in a buffer, for example, the LLR can be buffered in a physical layer HARQ LLR buffer. By using LLR, the decoded bits are softly combined (for example, bits with LLR lower than a preset threshold are selected, decoded according to bits with LLR greater than or equal to the preset threshold, or decoded bits are weighted and averaged according to LLR), thereby improving The decoding success rate of the soft merge. For incremental redundancy (IR) HARQ, in each retransmission, the transmitting section can send data composed of new parity bits. The receiving device stores all previously received data. For example, additional redundant information is transmitted in each retransmission to increase the channel coding gain, where the retransmission consists of new parity bits from the channel encoder. Different bits (for example, new parity bits) can be transmitted by using different rate matching (puncturing) modes, which can realize that less retransmitted data is sent and the effective code rate can be increased.

Compared with separate decoding (that is, each transmitted data is decoded separately, and is not combined with the previous data for decoding), the probability of successful decoding is improved. Similarly, if the decoding still fails, you can continue to repeat the above process, soft merge the newly received retransmitted data with the data in the buffer, and decode it again.

5) The time window can refer to a time range or time period. The time period has a start time and an end time. The length of the time window is the length from the start time to the end time. A time window can contain one or more time units, and the time units include time slots, symbols, subframes, and so on.

6) The terms "system" and "network" in the embodiments of the present invention can be used interchangeably. "Multiple" means two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. In addition, the character "/", unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

In order to facilitate the understanding of the embodiments of the present invention, the following describes the application scenarios of the present application.

Please refer to FIG. 1A, which is a schematic diagram of a possible application scenario in an embodiment of the present invention. Figure 1A includes a terminal device and a network device, and the terminal device and the network device can communicate with each other. After the network device sends the downlink data to the terminal device, the terminal device feeds back HARQ response information to the network device according to the receiving situation of the downlink data. The HARQ response information includes two kinds of ACK messages and NACK messages. If the terminal device successfully receives the downlink data sent by the network device, the terminal device can reply an ACK to the network device, and the network device can continue to transmit new data or end the transmission process. If the terminal device fails to receive the downlink data sent by the network device, the terminal device can reply with a NACK to the network device, and the network device can retransmit the last transmitted data, thereby maximizing the success rate of data transmission. If the base station does not receive any feedback, the terminal device is considered to be in a discontinuous transmission (DTX) state.

Please refer to FIG. 1B, which is a schematic diagram of another possible application scenario in an embodiment of the present invention. Figure 1B includes a network device, a terminal device 1 and a terminal device 2. The terminal device 1 and the terminal device 2 can all communicate with the network device, and the terminal device 1 and the terminal device 2 can also communicate directly with each other (ie device to device (device to device) to device, D2D) communication). The direct communication link between the terminal device 1 and the terminal device 2 is a side link. The network device may send DCI to the terminal device, such as the terminal device 1, to indicate downlink or uplink transmission resources. For example, the DCI is used to schedule the terminal device 1 to receive the downlink data sent by the network device. The HARQ response information may be reported to the network device by the sending device, that is, the terminal device 1. Alternatively, the DCI is used to schedule the terminal device 2 to send uplink data to the network device, and the corresponding HARQ response information of the uplink data may be reported to the network device by the sending device, that is, the terminal device 1. Or the network device sends DCI to the terminal device 1 to the terminal device 2, which is used to indicate the transmission resources of the side link, and the terminal device 1 is scheduled to send the side row data to the terminal device 2. The corresponding HARQ response information of the side row data can be It is reported to the network device by the sending device, that is, the terminal device 1.

In the above application scenario, taking the first device as the data sending device and the second device as the data receiving device as an example, the first device can communicate with multiple second devices at the same time, that is, the first device may communicate with one device at the same time. Or multiple second devices perform multiple unicast communications, multiple multicast communications, or multiple broadcast communications. Therefore, the first device can correspond to one or more source addresses, which are used to communicate with different receiving terminal devices. Communication. As the data receiving end device, the second device may communicate with multiple sending terminal devices at the same time, that is, the second device may simultaneously perform multiple unicast communications or multiple multicast communications or multiple sending terminal devices with one or more sending terminal devices. Broadcast communication, therefore, the second device can correspond to one or more destination addresses, which are respectively used for communication with different receiving terminal devices. When the first device is used as a data sender device to communicate with different communication types at the same time (for example, a unicast communication and a multicast communication), the source addresses corresponding to the different communication types can be the same or different Yes, this application is not limited. In the same way, for the second device, when the second device is used as a data receiving device and simultaneously performs different communication types of communication (for example, a unicast communication and a multicast communication), the different communication types correspond to The destination address can be the same or different, and this application is also not limited. For example, the first communication type may be any one or more of unicast, multicast, and broadcast, and the communication type may also be called a cast-type, a transmission method or a transmission method, etc., or may also have other names, This application is not limited.

In a 5G system, the HARQ response information feedback time can be configured by the network device through radio resource control (radio resource control, RRC) signaling, or through dynamic signaling downlink control information (downlink control information, DCI) to indicate. The transmission of DCI is generally completed through the physical downlink control channel (PDCCH), but the transmission of PDCCH is not completely reliable. Terminal equipment is affected by factors such as channel conditions and the analysis algorithm of the terminal equipment on the DCI. There are still terminal equipment The PDCCH is not received and the DCI is received but cannot be correctly parsed, or the network device does not send the DCI for the terminal device, but the terminal device parses out the DCI corresponding to the cyclical redundancy check (CRC) , Cause the PUSCH or PDSCH indicated by the DCI parsed by the terminal equipment to conflict with the PUSCH or PDSCH indicated by other DCIs. In turn, when the terminal equipment transmits data on the PUSCH or PDSCH with resource conflicts, it will cause data transmission errors, thereby increasing Unnecessary retransmissions affect transmission efficiency and performance.

The following examples illustrate scenarios where scheduling information conflicts exist:

In the first type of scheduling information conflict scenario, if it is determined that any two PUSCH transmissions or PDSCH receptions will overlap in the time domain. For example, if it is determined that the DCI detected by the second device at different times indicates the PUSCH transmission time or the PDSCH reception time at the same time, it is determined that the scheduling information conflicts. As shown in Figure 3A, the DCI1 detected by the terminal device at the first time indicates the first resource PUSCH1, and the DCI2 detected by the second device at the second time indicates the second resource PUSCH2. PUSCH1 and PUSCH2 overlap in the time domain. , It is determined that the scheduling information of DCI1 and DCI2 conflict. Or, as shown in FIG. 3B, the DCI1 detected by the terminal device at the first time indicates the first resource PDSCH1, and the DCI2 detected by the second device at the second time indicates the second resource PDSCH2, and PDSCH1 and PDSCH2 are in the time domain. If there is overlap, it is determined that the scheduling information of DCI1 and DCI2 conflict.

Taking the first DCI indicating the first resource and the second DCI indicating the second resource as an example, the conflict between the first resource and the second resource may be that the resources overlap in the time domain, or the first resource and the second resource are located in the same time window In this regard, the embodiment of the present invention does not limit it. In the embodiment of the present invention, there may be multiple ways for the first resource and the second resource to overlap in the time domain. As long as at least one OFDM symbol is the same in the time domain, it can be considered as overlapping in the time domain. In the first type, the first resource and the second resource partially overlap in the time domain, such as FIG. 4A; the second type, the first resource and the second resource completely overlap in the time domain, such as FIG. 4B. It should be understood that the first resource and the second resource are located in different serving cells or carriers, and different serving cells or carriers have different subcarrier spacing SCS, so no matter which subcarrier corresponds to the symbol, the first resource and the second resource are in As long as one symbol in the time domain is the same in the time domain position, it is considered that the first resource and the second resource overlap in the time domain, as shown in FIG. 4C.

In the second scenario of scheduling information conflict, NR has the following restrictions on network scheduling: For any two HARQ process IDs, the PUSCH/PDSCH that receives DCI first is sent/received first, and then the PUSCH/PDCCH of DCI is detected and then sent/ Receiving follows the principle of scheduling first, sending/receiving first. Therefore, if the DCI first detected by the terminal device indicates a later PUSCH transmission time or PDSCH reception time, it is determined that there is a problem of scheduling information conflict. As shown in FIG. 5A, the DCI1 detected by the terminal device at the first time indicates the first resource PUSCH1, and the DCI2 detected by the second device at the second time indicates the second resource PUSCH2, and the first time is earlier than the second time. The time slot where PUSCH1 is located is later than the time slot where PUSCH2 is located, that is, the time domain symbol of the second resource is earlier than the time domain symbol of the first resource, and it is determined that the scheduling information of DCI1 and DCI2 conflict. Or, as shown in FIG. 5B, the DCI1 detected by the terminal device at the first time indicates the first resource PDSCH1, and the DCI2 detected by the second device at the second time indicates the second resource PDSCH2, and the first time is earlier than the second resource. At time, if the time slot where PDSCH1 is located is later than the time slot where PDSCH2 is located, it is determined that the scheduling information of DCI1 and DCI2 conflict.

In the third scenario of scheduling information conflict, the sending end device needs to determine whether the next data sent needs to send the retransmission data of the first data after receiving the HARQ response information fed back by the receiving end device, and if it is determined that the first data needs to be sent If the retransmission data is generated, the second DCI can be generated, and the second DCI is used to indicate the second resource, and the retransmission data of the first data is transmitted on the second resource. For example, if the HARQ response information fed back by the receiving end device is an ACK message, the following steps may be included:

Step 1: The sending end device sends the first DCI to the receiving end device. The first DCI includes the HARQ process ID HARQ process ID1.

Specifically, the receiving end device may determine the HARQ process identifier corresponding to the data transmitted on the PUSCH or PDSCH indicated by the first DCI according to the first DCI indicated by the network device.

The HARQ process ID information can be carried in an explicit or implicit manner. For example, the HARQ process ID can be indicated in the corresponding field in the first DCI, and then the sending end device or the receiving end device can indicate the HARQ process correspondingly in the first DCI The identification field determines the HARQ process ID1. For another example, if the HARQ process identifier is not included in the first DCI, the terminal device can be based on the time interval between initial transmission and retransmission in the DCI (for example, time gap between initial transmission and retransmission), and the frequency of initial transmission and retransmission. The domain resource location (for example, frequency resource location of initial transmission and retransmission) determines the HARQ process identifier. That is, the HARQ process identifier in this application is replaced with the above-mentioned time interval between initial transmission and retransmission and the frequency domain resource location of initial transmission and retransmission.

Step 2: The sending end device sends the first data (for example, data1) to the receiving end device according to the first resource indicated by the first DCI, where data1 is the newly transmitted data.

Step 3: The receiving end device receives the first data on the first resource indicated by the first DCI, and if it is determined that the reception is successful, it sends the ACK feedback of this transmission to the transmitting end device.

Step 4: If the sending end device receives the ACK feedback for this transmission from the receiving end device, the sending end device UE1 considers that the transmission of the first data in step 2 is successful.

Step 5: The sending end device sends the second DCI to the receiving end device, which is used to instruct the receiving end device to receive the second data on the second resource indicated by the second DCI. The second DCI includes: HARQ process ID1.

Step 6: The sending end device sends the second data (for example, data2) to the receiving end device, where data2 is the newly transmitted data.

For example, if the HARQ response information fed back by the receiving end device is a NACK message, the following steps may be included:

Step 1: The sending end device sends the first DCI to the receiving end device. The first DCI includes: HARQ process ID1.

Step 3: The receiving end device receives the first data on the first resource indicated by the first DCI, and if it is determined that the reception fails, it sends the NACK feedback of this transmission to the transmitting end device.

Step 4: If the sending end device receives the NACK feedback for this transmission from the receiving end device, the sending end device considers that the transmission of the first data in step 2 has failed.

Step 5: The sending end device sends the second DCI to the receiving end device, which is used to instruct the receiving end device to receive the first data on the second resource indicated by the second DCI. The second DCI includes: HARQ process ID1 (HARQ process ID).

Step 6: The sending end device sends the first data (for example, data1) to the receiving end device, where data1 is the retransmitted data.

It can be seen from the above that in the same HARQ process, since the data sent each time may be newly transmitted data or retransmitted data, the sending end device may need to determine the next time based on the last time the receiving end device received data. The data sent; the receiving end device needs to parse the data sent next time according to the data sent last time. Therefore, for the PUSCH/PDSCH scheduling of the same HARQ process, the network needs to ensure serial execution, and there should be no PUSCH/PUSCH of the same HARQ. When the PDSCH has not been scheduled, the scheduling information of the same HARQ process is parsed. However, in a possible situation, as shown in FIGS. 6A to 6B, the receiving time of DCI1 is lagging, and the start bit of the first resource corresponding to DCI1 that is parsed is located in time slot n+2. In time slot n+1, the terminal device parses out the DCI2 of the same HARQ process, and the terminal device cannot feed back HARQ response information to the first device when the first data is not received. Therefore, before the first resource, no DCI2 should be resolved. Therefore, in the same HARQ process, it is first detected that the transmission of the PUSCH corresponding to the DCI or the reception of the PDSCH has not yet ended, and the new DCI of the same HARQ process is detected, which is used to indicate the transmission of data on the PUSCH or the reception of data on the PDSCH, It is determined that there is a scheduling information conflict. For example, as shown in FIG. 6A, the first DCI indicates HARQ process ID1, and the second DCI indicates HARQ process ID1. The PUSCH indicated by the first DCI is later than the detection time of the second DCI. Therefore, it can be determined that the first DCI indicates The scheduling information of and the scheduling information indicated by the second DCI conflict. As shown in Figure 6B, the first DCI indicates HARQ process ID1, and the second DCI indicates HARQ process ID1. The PDSCH indicated by the first DCI corresponds to a time later than the detection time of the second DCI. Therefore, the scheduling indicated by the first DCI can be determined The information conflicts with the scheduling information indicated by the second DCI.

Refer to FIG. 7, which is a flowchart of a method for sending and receiving data in an embodiment of the present invention. The method includes:

S101. Receive a first DCI; the first DCI is used to indicate first scheduling information of a first resource, and the type of the first resource is PUSCH or PDSCH;

After obtaining the first DCI, the first device may determine the scheduling information indicated by the DCI in the following manner.

Wherein, the first DCI may include at least one of the following: HARQ process ID, and indication information of the first time domain resource. The HARQ process ID may be used to indicate the HARQ process corresponding to the data transmitted on the first time domain resource.

For scheduling of uplink data, the indication information of the first time domain resource may include: the communication type of the first time domain resource, that is, PUSCH.

The indication information of the first time domain resource may also include: PUSCH transmission time. The PUSCH transmission time information may be carried in an explicit or implicit manner. For example, it is explicitly present as a field in the DCI, or through The way to scramble DCI exists implicitly. Alternatively, the first DCI may also be a UL grant. In this case, the transmission time of the PUSCH may be determined according to the detection time of the first DCI (for example, time slot n) (time slot n+4). The embodiments of the present invention are not limited here. When the terminal device receives the UL grant at the first moment, the first channel may be an uplink shared channel, that is, the UL grant is used to instruct the terminal device to send the first resource of the uplink shared channel.

Further, the first device may determine, according to the first DCI indicated by the network device, that the data transmitted on the PUSCH or PDSCH indicated by the first DCI is used for new transmission or retransmission, and/or used for HARQ corresponding to the HARQ process ID process. For example, a network device schedules a first DCI through a first DCI, and the first DCI is scrambled through a radio network tempory identity (RNTI), and the first device obtains the first DCI, and the first DCI is the transmission link For dynamic authorized resources, the corresponding HARQ process ID may be indicated in the first DCI. The first device may determine whether the first DCI is used for new transmission or retransmission according to at least one of the RNTI and the HARQ process ID, and/or determine the first HARQ process.

For another example, the information of the HARQ process ID can be carried in an explicit or implicit manner. If the field of the HARQ process ID is not included in the DCI, the terminal device can be based on the time interval between the initial transmission and the retransmission in the DCI (for example, Time gap between initial transmission and retransmission, the frequency domain resource location of initial transmission and retransmission (for example, frequency resource location of initial transmission and retransmission) to determine the HARQ process ID. That is, the identification of the HARQ process in this application is replaced with the above-mentioned time interval between initial transmission and retransmission and the frequency domain resource location of initial transmission and retransmission.

For the scheduling of downlink data, the indication information of the first resource can be used to indicate the information of the reception time of the PDSCH, and the information of the reception time of the PDSCH can be carried in an explicit or implicit manner, for example, as a field in the DCI. It can also exist implicitly by scrambling DCI.

In the embodiment of the present invention, the downlink scheduling may be at least one of the following types: PDSCH reception or semi-static PDSCH release and the combination of the serving cell of the downlink control information DCI associated therewith and the downlink control channel monitoring opportunity; used for scheduling DCI received by PDSCH or released by semi-static PDSCH; downlink control channel PDCCH carrying DCI information; PDSCH received or released by semi-static PDSCH.

For the scheduling of sideline data, the indication information of the first resource can be used to indicate the first channel. When the terminal device receives the sidelink grant (SL grant) at the first moment, the first channel can be the sideline shared channel , That is, SL grant is used to instruct the terminal device to send the first resource of the side shared channel. The side row scheduling in the embodiment of the present invention may be at least one of the following types: physical side row shared channel PSSCH/physical side row control channel PSCCH reception or semi-static PSSCH release and the service of the associated downlink control information DCI Combination of cell and downlink control channel monitoring opportunities; DCI for scheduling PSSCH reception or semi-static PSSCH release; downlink control channel PDCCH carrying DCI information; PSSCH/PSCCH reception or semi-static PSSCH release.

Further, when the terminal device determines that the time interval between the time when the first DCI is received and the time when the data is transmitted on the first resource is greater than the first duration, the terminal device determines that the capability of the terminal device is satisfied; the terminal device determines the time when the second DCI is received When the time interval from the time for transmitting data on the second resource is greater than the second duration, it is determined that the terminal device capabilities are met; wherein the first duration and the second duration may be determined according to the UE capabilities, and the first duration and the second duration may be They are the same or different, and are not limited here. UE capabilities can include UE network capabilities and UE wireless access capabilities. For example, the 3GPP version supported by the UE, the UE level, the base station and the UE determine the UE’s transmission capability through the UE level, the UE’s ROCH capability, and the UE radio frequency capability. Supported band indication, duplex mode, UE measurement capability: whether gap is needed, UE processing capability, etc. Taking the processing capability of the UE as an example, the terminal device can determine whether the time interval between the first DCI and the first resource is less than the processing capability of the terminal device, and if it is determined to be less than the processing capability of the terminal device, it is determined that the first resource indicated by the first DCI is not available. Is used, the first resource indicated by the first DCI is discarded. Specifically, after receiving the data, the receiving end device performs processing such as channel estimation, demodulation, and decoding, and then feeds back HARQ response information according to the decoding result. Among them, the receiving processing time of the receiving end device is defined by the current standard as: from the last symbol (orthogonal frequency division multiplexing (OFDM) symbol) of the data (for example, business data) sent by the transmitting end device to the receiving The end device feeds back the interval size of the first symbol of the HARQ response information. Here, the receiving processing time of the receiving end device can be regarded as the processing capability of the receiving end device. The receiving processing time of the terminal device can be defined as the interval from the last symbol of the service data (for example, PDSCH data) to the first symbol of the channel (for example, PUCCH) that feeds back the HARQ response information. The interval is based on the capability of the terminal device ( capability 1, UE CAP#1). For example, in the current R15, the value of this interval can be shown in Tables 1 and 2:

Table 1 PDSCH processing time (capability 1)

Table 2 PDSCH processing time (capability2)

Where μ represents the subcarrier interval of the data channel, and the calculation method of the interval can be 15KHz*2^μ.

Since the last symbol of the data is received at the receiving end device, a certain time interval is required to start receiving or sending the first data. The size of the time interval depends on the processing capability of the receiving end device. The current standard is that the subcarrier interval is At 15KHz, at least three symbols are required for the time interval.

The first time interval is less than the set time threshold, and the first time interval is the time interval between the moment when the Nth service data ends and the moment when the receiving end device sends the first data or signal to the sending end device. Among them, the first data can be traffic channel data (such as PUSCH channel data or PSSCH channel data), and the first signal can be a sounding reference signal (SRS) or a channel state information measurement reference signal (channel state indication-reference signal, CSI-RS), or physical random access channel signal (physical random access channel, PRACH).

Further, the first device may determine the credibility of the first DCI in the following manner.

A possible implementation manner is to determine the value of the credibility of the first DCI by analyzing the signal-to-noise ratio of the soft demodulation information determined during the first DCI.

The specific soft demodulation information can be the soft information of the probability of each information bit when the terminal device demodulates the baseband data of the first DCI it receives; that is, the demodulation result is quantized as an integer in a range For example, the integer M corresponds to bit 1, and -M corresponds to bit -1. The absolute value of the value in the (-M, M) interval represents the probability that the demodulation result is 1 or -1. For the demodulated soft information of high-order modulated signals, the log-likelihood ratio algorithm based on the maximum a posteriori probability criterion can be used to calculate the soft information, and the absolute value of the soft information can be used to characterize the credibility of the soft decision. The demodulation mode can be determined according to the modulation mode predetermined by the first DCI. For example, the modulation mode can be: BPSK (Binary Phase Shift Keying), Quadrature Phase Shift Keying (QPSK) and Modulation methods such as Quadrature Amplitude Modulation (Quadrature Amplitude Modulation) are used to increase the bandwidth and adapt to different channels.

Further, when determining the soft information of the value probability of each information bit, the signal-to-noise ratio of the soft information corresponding to each bit can also be determined by the method of channel estimation, and further, the signal of the soft demodulation information of the first DCI can be determined. Noise ratio.

Only when the signal-to-noise ratio is high and the code has a strong error correction capability, can the coded data be considered consistent with the data transmitted by the transmitting end. Therefore, in a possible way, when it is determined that the signal-to-noise ratio of the soft demodulation information of the first DCI is lower than the first signal-to-noise ratio threshold, it can be determined that the bit error rate of the first DCI is too high and the reliability of the first DCI is If it is too low, the first DCI can be discarded.

When the signal-to-noise ratio of the soft demodulation information of the first DCI is greater than or equal to the first signal-to-noise ratio threshold, the reliability of the first DCI can be determined according to the correspondence between the signal-to-noise ratio of the soft demodulation information and the reliability The value of. Among them, the corresponding relationship between the signal-to-noise ratio of the soft demodulation information and the credibility can be determined by means of interval mapping. For example, the credibility of the first DCI can also be an interval number, according to the signal-to-noise ratio of the soft demodulation information. The value interval of the ratio is mapped to the value interval of the credibility to determine the correspondence between the signal-to-noise ratio of the soft demodulation information and the credibility.

Wherein, the method for acquiring the soft demodulation information may include: outputting the probability soft information of each bit according to the received data.

Another possible implementation is to compare the signal-to-noise ratio determined by the channel estimation of the first DCI with the average signal-to-noise ratio determined by the historical channel estimation to determine the signal-to-noise ratio and the average signal-to-noise ratio of the first DCI. The difference between the two is used as an indicator of the reliability of the first DCI.

The average channel ratio determined by the historical channel estimation may be determined according to multiple channel ratios determined on the resources corresponding to the transmission DCI. For example, in the preset time period before receiving the first DCI, the terminal device receives N DCIs, and when demodulating N DCIs, N signal-to-noise ratios can be determined, and then N signal-to-noise ratios can be determined based on the N signal-to-noise ratios. The average value of N signal-to-noise ratios, and the historical variance between N signal-to-noise ratios. The preset time period can be determined according to the round-trip time of the HARQ process indicated by DCI, for example, 8-10ms in LTE, or it can be determined according to big data, for example, according to the history within 1 month before the first DCI In the data, the terminal device receives 10 DCIs in the same time period (for example, 8:00-8:01 in the morning). When demodulating the 10 DCIs, 10 signal-to-noise ratios can be determined, which can then be based on 10 signal-to-noise ratios, determine the average value of the 10 signal-to-noise ratios, and the historical variance between the 10 signal-to-noise ratios.

In a possible way, when the signal-to-noise ratio of the first DCI is compared with the average signal-to-noise ratio, the difference between the signal-to-noise ratio of the first DCI and the average value of the N signal-to-noise ratios can be used as the first DCI The credibility of the indicator. For example, establish the corresponding relationship between the difference between the signal-to-noise ratio of the first DCI and the average signal-to-noise ratio and the credibility of the first DCI, and the corresponding relationship is negative correlation, that is, if the signal-to-noise ratio of the first DCI is determined to be The larger the difference between the signal-to-noise ratios, the lower the value of the credibility of the first DCI. For example, the credibility can be classified. Taking three levels as an example, if it is determined that the difference between the signal-to-noise ratio of the first DCI and the average value of the N signal-to-noise ratios is greater than the first preset threshold, then the first The reliability of DCI is the third level; if it is determined that the difference between the signal-to-noise ratio of the first DCI and the average value of the N signal-to-noise ratios is less than or equal to the first preset threshold and greater than the second preset threshold, then It is determined that the reliability of the first DCI is the second level; if it is determined that the difference between the signal-to-noise ratio of the first DCI and the average value of the N signal-to-noise ratios is less than or equal to the second preset threshold, the reliability of the first DCI is determined The credibility is the first level. Among them, the credibility of the first level is greater than the credibility of the second level, and the credibility of the second level is greater than the credibility of the third pole. Of course, the credibility of the first DCI can also be an interval. For specific values, different precisions can be set as required. For specific implementations, please refer to the corresponding relationship between the SNR of the soft demodulation information and the credibility. The implementation mode will not be repeated here.

In another possible manner, the variance between the signal-to-noise ratio of the first DCI and the average signal-to-noise ratio can also be used as an indicator of the reliability of the first DCI. Specifically, when the signal-to-noise ratio of the first DCI is compared with the average signal-to-noise ratio, the first variance between the signal-to-noise ratio of the first DCI and the N signal-to-noise ratios can also be compared with the N signal-to-noise ratios. The historical variance between the two is compared, and the difference between the first variance and the historical variance is used as an indicator of the credibility of the first DCI. Among them, the correspondence between the difference between the first variance and the historical variance and the credibility is also negatively correlated.

The foregoing manner is only an example, and the credibility of the first DCI may also be determined according to other parameters determined by the DCI during the demodulation process, which is not limited here.

In the embodiment of the present application, the terminal device may use the indication information of the first resource obtained by the analysis of the first DCI, the detection time of the first DCI, the credibility of the first DCI, and the HARQ process ID indicated by the first DCI as the first DCI The indicated first scheduling information.

S102. Receive a second DCI, where the DCI is used to indicate second scheduling information of the second resource; the type of the second resource is PUSCH or PDSCH;

Wherein, the second DCI may include at least one of the following: HARQ process ID, and indication information of the first time domain resource. The second DCI is used to instruct the terminal device to transmit data on the second resource. The parsing process of the second DCI by the terminal device can refer to the parsing process of the first DCI, which will not be repeated here. Similarly, the terminal device may use the second resource indication information obtained by analyzing the second DCI, the detection time of the second DCI, the credibility of the second DCI, and the HARQ process ID indicated by the second DCI as the first indication of the second DCI. 2. Scheduling information.

S103. When the first scheduling information conflicts with the second scheduling information, according to one or more of the reliability of the DCI, the time domain information of the first resource, and the time domain information of the second resource, set the data on the first resource Transfer data, or transfer data on the second resource.

Wherein, the reliability of the DCI includes: the reliability of the first DCI and the reliability of the second DCI. The specific process of determining whether there is scheduling information that conflicts with the first scheduling information may include the following multiple implementation manners.

In a possible implementation manner, the terminal device may create a scheduling information buffer queue for the scheduling information obtained by parsing the DCI. For example, for the scheduling of downlink data, the terminal device can create a PDSCH scheduling information buffer queue, and for the scheduling of uplink data, the terminal device can create a PUSCH scheduling information buffer queue.

After determining that the first DCI meets the processing capability of the terminal device, the terminal device may store the first scheduling information corresponding to the first DCI in the corresponding scheduling information buffer queue. For example, as shown in FIG. 8A, assuming that the first DCI indicates The first time domain resource is the PUSCH, and the first indication information is stored in the PUSCH scheduling information buffer queue, and the storage method can be determined based on improving the efficiency of judging scheduling information conflicts. For example, the scheduling information can be stored in the order of DCI detection time. For example, before the terminal device obtains the first DCI, the terminal device also stores 3 scheduling information in the PUSCH scheduling information buffer queue, for example, the second scheduling information, For the third scheduling information and the fourth scheduling information, the first scheduling information may be stored after the fourth scheduling information. Of course, it can also be sorted according to the time domain resources indicated by the DCI, and correspondingly stored in the scheduling information buffer queue, which is not limited here.

In a possible scenario, after the terminal device parses the first DCI, it determines that the first resource indicated by the first DCI is the PUSCH. If the terminal device determines that there is no scheduling information in the PUSCH scheduling information buffer queue, it can determine that there is no The first scheduling information conflicts with the scheduling information.

In a possible scenario, after analyzing the first DCI, the terminal device determines that the first resource indicated by the first DCI is the PUSCH, then the terminal device traverses the scheduling information in the PUSCH scheduling information buffer queue in the PUSCH scheduling information buffer queue, and compares Whether there is scheduling information that conflicts with the first scheduling information.

For example, taking the three conflict scenarios mentioned in the foregoing embodiment as an example, the terminal device may first determine whether there is scheduling information that is the same as the first HARQ process ID in the first scheduling information, for example, if the second scheduling is determined If the HARQ process ID of the information is the same as the first HARQ process ID, it is determined whether the time corresponding to the first time domain resource in the first scheduling information is later than the detection time of the second DCI. If it is determined that the time corresponding to the first time domain resource is later than the detection time of the second DCI, it is confirmed that the first scheduling information conflicts with the second scheduling information. At this time, it is necessary to further compare whether the first scheduling information still conflicts with other scheduling information in the scheduling information cache queue.

Further, the terminal device can determine whether there is a conflicting scheduling resource by comparing whether the time domain resource in each scheduling information in the scheduling information buffer queue overlaps with the first time domain resource. For example, if the terminal device determines that there is third scheduling information and the third time domain resource of the third scheduling information overlaps the time domain resource of the first scheduling information, it is confirmed that the first scheduling information conflicts with the third scheduling information.

For another example, the terminal device can compare whether the time domain symbol corresponding to the time domain resource in each scheduling information in the scheduling information buffer queue is later than the first time domain symbol corresponding to the first time domain resource to confirm whether there is a conflicting scheduling resource . For example, if the terminal device determines that there is fourth scheduling information, and the fourth time domain symbol corresponding to the fourth time domain resource of the fourth scheduling information is later than the time domain symbol corresponding to the time domain resource of the first scheduling information, the first scheduling is confirmed The information conflicts with the fourth scheduling information.

After the traversal is completed, confirm the scheduling information that conflicts with the first scheduling information in the scheduling information cache queue.

It should be noted that the above comparison process is only an example, and the specific method for confirming the scheduling information conflict can be confirmed according to the specific conflict scenario, which is not limited here.

In another possible implementation, the terminal device can create a scheduling information cache table for the scheduling information obtained by parsing the DCI, and generate corresponding entries according to the types of different content in each scheduling information, and then change the corresponding scheduling information to different types. The content is stored in the position in the table entry in order to improve the efficiency of traversing scheduling information. Taking the first DCI as the PUSCH example, the first scheduling information corresponding to the first DCI may include the following 4 items: PUSCH1 transmission time, detection time of the first DCI, reliability of the first DCI, and HARQ process indicated by the first DCI ID; can be written into the 4 items in the PUSCH scheduling information cache table, of course, you can also add the first scheduling information usage record table entry, for example, if it is determined that the second scheduling information has been used to transmit data, it can be used in the second In the usage record table item corresponding to the scheduling information, the used is added, and when comparing whether there is scheduling information conflicting with the first scheduling information, the used scheduling information can be excluded.

The above solution enables the terminal device to determine whether there is a conflict of scheduling information first when determining the first scheduling information based on the first DCI, avoiding the conflict between the scheduling information of the untransmitted transmission resources, and still perform data transmission , Has played a check function, has improved the flexibility and reliability of communication.

The following takes the PUSCH indicated by the first scheduling information and the second scheduling information as an example to illustrate the solution after the conflict between the first scheduling information is determined by comparing the analysis results of the first DCI and the second DCI. In a possible implementation manner, if the terminal device determines that the first scheduling information conflicts with the second scheduling information, it can randomly discard a piece of scheduling information. For example, if the terminal device discards the second scheduling information, it can change the second scheduling information from The scheduling buffer queue is deleted. If after deleting the second scheduling information, it is determined that there is no conflicting scheduling information in the first scheduling information, the data indicated by the first DCI can be transmitted on the first time domain resource corresponding to the first scheduling information.

A possible design is that when the time domain symbol of the second resource is earlier than the time domain symbol of the first resource, or the time domain symbol of the first resource overlaps with the time domain symbol of the second resource, the terminal device may determine that the time domain symbol of the first resource or Data is transmitted on the second resource.

Further, if the terminal device determines to transmit the data indicated by the first DCI on the first time domain resource corresponding to the first scheduling information, the first scheduling information in the scheduling buffer queue may be deleted to avoid affecting the scheduling in the scheduling buffer queue. Judgment of information conflict.

In another possible implementation manner, if the terminal device determines that the first scheduling information conflicts with the second scheduling information, it can correspond to the low-reliability DCI according to the credibility of the first DCI and the credibility of the second DCI The scheduling information is discarded. For example, if the terminal device determines that the credibility of the first DCI is greater than the credibility of the second DCI, the second scheduling information is deleted from the scheduling buffer queue, and if the second scheduling information is deleted, it is determined that the first scheduling information does not exist For conflicting scheduling information, the data indicated by the first DCI may be transmitted on the first time domain resource corresponding to the first scheduling information. Further, if the terminal device determines that the data indicated by the first DCI on the first time domain resource corresponding to the first scheduling information is completed, the first scheduling information in the scheduling buffer queue may be deleted to avoid affecting the scheduling buffer queue Judgment of conflicts in scheduling information. For another example, if the terminal device determines that the credibility of the first DCI is equal to the credibility of the second DCI, one piece of scheduling information may be randomly discarded.

In another possible implementation manner, if the terminal device determines that the first scheduling information conflicts with the second scheduling information, it may discard all the first scheduling information and the second scheduling information, for example, if the first resource indicated by the first scheduling information In the second resource indicated by the second scheduling information, the first resource and the second resource are the same resource. In this case, the first scheduling information and the second scheduling information may be discarded. For another example, if it is determined that the first scheduling information and the second scheduling information are the same HARQ process, all the first scheduling information and the second scheduling information may be discarded.

Further, if the first scheduling information conflicts with the second scheduling information and the third scheduling information, the conflicting scheduling information can be processed according to the priority of the scheduling information. The priority may include a priority determined by the credibility of the first DCI, and may also include a priority set in advance according to the resource type indicated by the scheduling information. For example, in a possible way, if it is determined that the credibility of the first DCI is greater than the first threshold, the priority of the first scheduling information can be set to high priority, and if it is determined that the credibility of the first DCI is less than or equal to If the first threshold is greater than the second threshold, the priority of the first scheduling information can be set to medium priority. If it is determined that the credibility of the first DCI is less than or equal to the second threshold and greater than the third threshold, then The priority of the first scheduling information is set to a low priority. In another possible way, if it is determined that the first resource indicated by the first scheduling information is a resource for transmitting newly transmitted data, the priority of the first scheduling information may be set to a high priority, and if the first scheduling information is determined The indicated first resource is a resource for transmitting retransmission data, the priority of the first scheduling information can be set to medium priority; if it is determined that the first resource indicated by the first scheduling information is a resource for transmitting feedback information , The priority of the first scheduling information can be set to a low priority. The foregoing is only an example. In the specific implementation process, the priority of the scheduling information may also be determined according to other parameters, for example, the priority may be determined according to the reliability of the DCI.

Of course, the priority of the scheduling information corresponding to the DCI can also be comprehensively determined according to the reliability of the DCI and the resource type indicated by the scheduling information. For example, the first-level priority may be determined according to the reliability of the DCI, and then the second-level priority may be determined according to the resource type indicated by the scheduling information. The method for determining the priority of each level may refer to the above-mentioned embodiment. I won't repeat them here.

Considering that the first scheduling information of the first DCI may conflict with multiple scheduling information, different conflicting modes can be set to different processing schemes. For example, if it is determined that the first scheduling information conflicts with the second scheduling information, and the first scheduling information conflicts with the third scheduling information, but the second scheduling information and the third scheduling information do not conflict, the first scheduling information may be discarded. For another example, if the first scheduling information, the second scheduling information, and the third scheduling information all conflict with each other, the credibility can be retained according to the credibility of the first scheduling information, the second scheduling information, and the third scheduling information. The scheduling information with the highest degree is discarded and the other two are discarded.

After processing the conflicting scheduling information, the terminal device can perform scheduling according to the scheduling information in the scheduling information buffer queue. For example, if the conflicting scheduling information is processed, it is determined that the first scheduling information is stored in the scheduling information buffer queue, then The data may be transmitted on the first resource indicated by the first scheduling information. If after processing the conflicting scheduling information, it is determined that the second scheduling information is stored in the scheduling information buffer queue, then data can be transmitted on the second resource indicated by the second scheduling information.

In the above solution, by comparing the analysis results of the first DCI and the second DCI, it is determined to use the analysis result of the first DCI or the second DCI to determine the transmission of the first data, and then the first scheduling information after the second scheduling information is determined Under the premise that there is no conflict between scheduling information of the same communication type, the first data is transmitted on the first resource indicated by the first scheduling information. Compared with the prior art, the possibility of the first DCI and the second DCI cannot be avoided. For the problem of scheduling information conflicts, this application provides a new data transmission solution that can improve the flexibility and reliability of communication.

An embodiment of the present application provides a data sending method, as shown in FIG. 9A, including:

Step 201: Obtain the first DCI.

The first scheduling information corresponding to the first DCI may include at least one of the following: HARQ process ID of PUSCH scheduling; DCI detection time; reliability obtained by DCI detection, PUSCH transmission time.

Step 202: Determine whether the time interval from DCI to PUSCH scheduling is less than the processing capability of the terminal device. If yes, go to step 207; if not, go to step 203.

Step 203: Determine whether the PUSCH scheduling information buffer queue is empty according to the first scheduling information, if yes, execute step 206; if not, execute step 204.

Step 204: Store the first scheduling information in the PUSCH scheduling information cache queue, and determine whether the PUSCH scheduling information cache queue has scheduling information that conflicts with the first scheduling information; if yes, execute step 205; if not, execute step 206.

Step 205: Process the first scheduling information and the scheduling information that conflicts with the first scheduling information.

The processing procedure may be determined according to specific scenarios. For example, the first scheduling information may be discarded, and the scheduling information in the PUSCH scheduling information cache queue that conflicts with the first scheduling information may be reserved. Alternatively, the scheduling information in the PUSCH scheduling information buffer queue that conflicts with the first scheduling information may be discarded, and the first scheduling information may be retained. For another example, the first scheduling information and the scheduling information in the PUSCH scheduling information cache queue that conflict with the first scheduling information may be discarded.

Further, the discarded scheduling information can be determined according to the reliability of the DCI in the conflicting scheduling information. For example, if it is determined that the credibility of the first scheduling information is greater than the credibility of the scheduling information in the PUSCH scheduling information cache queue that conflicts with the first scheduling information, then the PUSCH scheduling information cache queue that conflicts with the first scheduling information is discarded. The scheduling information retains the first scheduling information.

Step 206: The terminal device buffers the scheduling information in the queue according to the PUSCH scheduling information, and sends the data indicated by the DCI in the scheduling information on the transmission resource indicated by the scheduling information. For example, if the scheduling information used at this time is the first scheduling information, after the data is sent, or after the data is sent using the first scheduling information, the first scheduling information is deleted from the PUSCH scheduling information buffer queue.

Step 207: The process ends.

The embodiment of the present application provides a data receiving method, as shown in FIG. 9B, including:

Step 301: Obtain the first DCI.

The first scheduling information corresponding to the first DCI may include at least one of the following: the HARQ process ID of the PDSCH scheduling; the DCI detection time; the reliability obtained by the DCI detection, and the time of receiving data on the PDSCH first resource.

Step 302: Determine whether the time interval from DCI to PDSCH scheduling is less than the processing capability of the terminal device. If yes, go to step 307; if not, go to step 303.

Step 303: Determine whether the PDSCH scheduling information buffer queue is empty according to the first scheduling information, if yes, execute step 306; if not, execute step 304.

Step 304: Store the first scheduling information in the PDSCH scheduling information buffer queue, and determine whether the PDSCH scheduling information buffer queue has scheduling information that conflicts with the first scheduling information; if yes, go to step 305; if not, go to step 306.

Step 305: Process the first scheduling information and the scheduling information that conflicts with the first scheduling information.

The processing process can be determined according to specific scenarios, and the specific implementation process can refer to the above implementation manners, which will not be repeated here.

Step 306: The terminal device buffers the scheduling information in the queue according to the PDSCH scheduling information, and receives the data indicated by the DCI in the scheduling information on the transmission resource indicated by the scheduling information. For example, if the scheduling information used at this time is the first scheduling information, after data is received, or when the first scheduling information is used to receive data, the first scheduling information is deleted from the PDSCH scheduling information buffer queue.

Step 307: The process ends.

The above embodiments can be combined with each other to achieve different technical effects.

The data transmission method provided by the embodiment of the present application is described above with reference to FIG. 7. Based on the same inventive concept as the above-mentioned data transmission method, the embodiment of the present application also provides a communication device. As shown in FIG. 10, the communication device 1000 Including a processing unit 1001 and a transceiver unit 1002, the communication device 1000 (hereinafter referred to as the device 1000) can be used to implement the method executed in the foregoing embodiment. The apparatus 1000 may be a terminal device, may also be located in a terminal device, or may be a receiving end device or a sending end device.

It should be noted that the foregoing apparatus 1000 may be a terminal device, or may be a chip applied to a terminal device or other combination devices or components having the functions of the foregoing terminal device. When the apparatus 1000 is a terminal device, the transceiver unit may be a transceiver, which may include an antenna and a radio frequency circuit, etc., and the processing module may be a processor, such as a central processing unit (CPU). When the apparatus 1000 is a component with the above-mentioned terminal device function, the transceiver unit may be a radio frequency unit, and the processing module may be a processor. When the device 1000 is a chip system, the transceiver unit may be an input/output interface of the chip system, and the processing module may be a processor of the chip system.

In an embodiment, the apparatus 1000 may be used to execute the steps performed by the receiving end in the foregoing method embodiment, or execute the steps performed by the sending end device.

Specifically, the transceiver unit 1002 is configured to receive the first DCI; the first DCI is used to indicate the first scheduling information of the first resource, and the type of the first resource is PUSCH or PDSCH; and the second DCI is received, and the second DCI is used for Indicate the second scheduling information of the second resource; the type of the second resource is PUSCH or PDSCH; the processing unit 1001 is used for when the first scheduling information conflicts with the second scheduling information, according to the reliability of the DCI, the first resource One or more of the time domain information of the second resource and the time domain information of the second resource, the data is transmitted on the first resource, or the data is transmitted on the second resource; the credibility of the DCI includes: the credibility of the first DCI Degree and the credibility of the second DCI.

It should be noted that the judgment of the conflict between the first scheduling information and the second scheduling information can refer to the judgment method involved in the embodiment of this application, or other judgment methods, which are not limited here.

A possible design, the processing unit 1001, is specifically configured to transmit data on the first resource when the credibility of the first DCI is greater than or equal to the credibility of the second DCI; or, when the credibility of the first DCI is When the credibility is less than the credibility of the second DCI, the data is transmitted on the second resource.

A possible design, the processing unit 1001, is specifically configured to: when the time domain symbol of the second resource is earlier than the time domain symbol of the first resource, or when the time domain symbols of the first resource and the second resource overlap, Data is transmitted on the first resource or the second resource; the time domain information of the first resource includes the time domain symbol of the first resource; the time domain information of the second resource includes the time domain symbol of the second resource.

A possible design, the processing unit 1001, is further configured to: determine the time interval between the time when the first DCI is received and the time when data is transmitted on the first resource, which is greater than the first time length; the first time length is based on the terminal equipment UE capability Determined; it is determined that the time interval between the time when the second DCI is received and the time when data is transmitted on the second resource is greater than the second time period; the second time period is determined according to the UE capability.

It should be noted that the division of modules in the embodiments of this application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods. In addition, each functional unit in each embodiment of this application may be Integrated in one processing unit, it can also be a separate physical presence, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor execute all or part of the steps of the methods in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

Based on the same concept as the above-mentioned data transmission method, as shown in FIG. 11, an embodiment of the present application further provides a communication device 1100. The communication device 1100 (hereinafter referred to as the device 1100) can be used to implement the method performed in the foregoing method embodiment. For details, refer to the description in the foregoing method embodiment. The device 1100 may be a terminal device, or may be located in a terminal device, and may be a transmission device. End device or receiving end device.

The apparatus 1100 includes one or more processors 1101. The processor 1101 may be a general-purpose processor, a special-purpose processor, or the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control communication devices (such as base stations, terminals, or chips), execute software programs, and process data in the software programs. The communication device 1100 may include a transceiving unit to implement signal input (reception) and output (transmission). For example, the transceiver unit may be a transceiver, a radio frequency chip, and so on.

The apparatus 1100 includes one or more processors 1101, and the one or more processors 1101 can implement the method executed by the transmitting end device or the receiving end device in the above-described embodiment.

Optionally, the processor 1101 may implement other functions in addition to the method in the above-mentioned embodiment.

Optionally, in one design, the processor 1101 may execute instructions to cause the apparatus 1100 to execute the method executed in the foregoing method embodiment. The instruction can be stored in whole or in part in the processor 1101, such as the instruction 1103, or in the memory 1102 coupled to the processor 1101, in whole or in part, such as the instruction 1104, or the device 1100 can be executed by the

instructions

1103 and 1104 together. The method performed in the above method embodiment.

In another possible design, the communication device 1100 may also include a circuit, which may implement the functions performed by the terminal device in the foregoing method embodiment.

In another possible design, the device 1100 may include one or more memories 1102, on which instructions 1104 are stored, and the instructions may be executed on the processor, so that the device 1100 executes the data described in the above method embodiments. Transmission method. Optionally, data may also be stored in the memory. Optionally, instructions and/or data may also be stored in the processor. For example, the foregoing one or more memories 1102 may store the association or correspondence described in the foregoing embodiment, or related parameters or tables involved in the foregoing embodiment. Among them, the processor and the memory may be separately provided, or may be integrated or coupled together.

In another possible design, the apparatus 1100 may further include a transceiver unit 1105. The processor 1101 may be referred to as a processing unit, and controls a device (terminal or base station). The transceiving unit 1105 may be called a transceiver, a transceiving circuit, or a transceiver, etc., for implementing the transceiving of the device.

For example, if the apparatus 1100 is a chip applied to a terminal device or other combination devices, components, etc. having the above-mentioned terminal device functions, the apparatus 1100 may include a transceiver unit 1105.

In another possible design, the apparatus 1100 may further include a transceiver unit 1105 and an antenna 1106. The processor 1101 may be referred to as a processing unit, and controls the device. The transceiver unit 1105 may be called a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement the transceiver function of the device through the antenna 1106.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), and synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

The embodiments of the present application also provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a computer, the data transmission method of any one of the method embodiments applied to the sending end device or the receiving end device is realized .

The embodiments of the present application also provide a computer program product, which, when executed by a computer, implements the data transmission method of any method embodiment applied to the sending end device or the receiving end device.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server, or data center through a wired ( For example, coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium can be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)) )Wait.

An embodiment of the present application further provides a processing device, including a processor and an interface; the processor is configured to execute the data transmission method of any method embodiment applied to the originating device or the first device.

It should be understood that the foregoing processing device may be a chip, and the processor may be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor It may be a general-purpose processor, which is implemented by reading software codes stored in the memory. The memory may be integrated in the processor, or may be located outside the processor and exist independently.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to this application without departing from the protection scope of this application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, then this application is also intended to include these modifications and variations.

Claims

A data transmission method, characterized in that it includes:

Receiving first downlink control information DCI; the first DCI is used to indicate first scheduling information of a first resource, and the type of the first resource is a physical uplink shared channel PUSCH or a physical downlink shared channel PDSCH;

Receiving a second DCI, where the second DCI is used to indicate second scheduling information of a second resource; the type of the second resource is PUSCH or PDSCH;

When the first scheduling information conflicts with the second scheduling information, according to one or more of the reliability of the DCI, the time domain information of the first resource, and the time domain information of the second resource, the Data is transmitted on the first resource, or data is transmitted on the second resource; the credibility of the DCI includes: the credibility of the first DCI and the credibility of the second DCI.
The method according to claim 1, wherein the conflict between the first scheduling information and the second scheduling information comprises:

The first resource and the second resource are of the same type, and the hybrid automatic feedback retransmission HARQ process identification ID of the first resource and the second resource are the same, and the time of receiving the second DCI is earlier than Time to transmit data on the first resource.
The method according to claim 1, wherein the conflict between the first scheduling information and the second scheduling information comprises:

The first resource and the second resource are of the same type, the HARQ process IDs of the first resource and the second resource are different, and the time domain symbols of the first resource and the second resource overlap .
The method of claim 1, wherein the time domain information of the first resource includes the time domain symbol of the first resource; the time domain information of the second resource includes the time domain of the second resource. Domain symbol; the conflict between the first scheduling information and the second scheduling information includes:

The first resource and the second resource are of the same type, the HARQ process IDs of the first resource and the second resource are different, and the time domain symbol of the second resource is earlier than that of the first resource Time domain symbol.
The method according to any one of claims 1 to 4, wherein, according to one or more of the reliability of DCI, the time domain information of the first resource, and the time domain information of the second resource, The transmission of data on the first resource or the transmission of data on the second resource includes:

When the credibility of the first DCI is greater than or equal to the credibility of the second DCI, transmit data on the first resource; or,

When the credibility of the first DCI is less than the credibility of the second DCI, data is transmitted on the second resource.
The method according to any one of claims 1 to 4, wherein the time domain information of the first resource comprises the time domain symbol of the first resource; the time domain information of the second resource comprises the The time domain symbol of the second resource; according to one or more of the credibility of the DCI, the time domain information of the first resource, and the time domain information of the second resource, the data is transmitted on the first resource, or in The data transmitted on the second resource includes:

When the time domain symbol of the second resource is earlier than the time domain symbol of the first resource, or the time domain symbol of the first resource and the second resource overlap, the time domain symbol of the first resource or Data is transmitted on the second resource.
The method according to any one of claims 1 to 6, wherein the credibility of the first DCI comprises one or more of the following: a signal-to-noise ratio of soft demodulation information of the first DCI, The difference between the signal-to-noise ratio of the first DCI and the average value of the historical signal-to-noise ratio;

The credibility of the second DCI includes one or more of the following: the signal-to-noise ratio of the soft demodulation information of the second DCI, the signal-to-noise ratio of the second DCI and the average value of the historical signal-to-noise ratio Difference.
The method according to any one of claims 1-7, wherein the method further comprises:

The time interval between the time when the first DCI is received and the time when data is transmitted on the first resource is greater than a first time period; the first time period is determined according to a terminal device UE capability;

The time interval between the time when the second DCI is received and the time when data is transmitted on the second resource is greater than a second time period; the second time period is determined according to the UE capability.
A data transmission device, characterized in that it comprises:

The transceiver unit is configured to receive first downlink control information DCI; the first DCI is used to indicate first scheduling information of a first resource, and the type of the first resource is physical uplink shared channel PUSCH, or physical downlink Shared channel PDSCH; receiving a second DCI, where the second DCI is used to indicate second scheduling information of a second resource; the type of the second resource is PUSCH or PDSCH;

The processing unit is configured to: when the first scheduling information conflicts with the second scheduling information, according to one or more of the reliability of the DCI, the time domain information of the first resource, and the time domain information of the second resource Item, data is transmitted on the first resource, or data is transmitted on the second resource; the reliability of the DCI includes: the reliability of the first DCI and the reliability of the second DCI.
The apparatus according to claim 9, wherein the conflict between the first scheduling information and the second scheduling information comprises:

The first resource and the second resource are of the same type, and the hybrid automatic feedback retransmission HARQ process identification ID of the first resource and the second resource are the same, and the time of receiving the second DCI is earlier than Time to transmit data on the first resource.
The apparatus according to claim 9, wherein the conflict between the first scheduling information and the second scheduling information comprises:

The first resource and the second resource are of the same type, the HARQ process IDs of the first resource and the second resource are different, and the time domain symbols of the first resource and the second resource overlap .
The apparatus according to claim 9, wherein the time domain information of the first resource includes the time domain symbol of the first resource; the time domain information of the second resource includes the time domain of the second resource. Domain symbol; the conflict between the first scheduling information and the second scheduling information includes:

The first resource and the second resource are of the same type, the HARQ process IDs of the first resource and the second resource are different, and the time domain symbol of the second resource is earlier than that of the first resource Time domain symbol.
The device according to any one of claims 9-12, wherein the processing unit is specifically configured to:

When the credibility of the first DCI is greater than or equal to the credibility of the second DCI, transmit data on the first resource; or,

When the credibility of the first DCI is less than the credibility of the second DCI, data is transmitted on the second resource.
The device according to any one of claims 9-12, wherein the processing unit is specifically configured to:

When the time domain symbol of the second resource is earlier than the time domain symbol of the first resource, or the time domain symbol of the first resource and the second resource overlap, the time domain symbol of the first resource or Data is transmitted on the second resource; the time domain information of the first resource includes the time domain symbol of the first resource; the time domain information of the second resource includes the time domain symbol of the second resource.
The apparatus according to any one of claims 9-14, wherein the credibility of the first DCI comprises one or more of the following: a signal-to-noise ratio of soft demodulation information of the first DCI, The difference between the signal-to-noise ratio of the first DCI and the average value of the historical signal-to-noise ratio;

The credibility of the second DCI includes one or more of the following: the signal-to-noise ratio of the soft demodulation information of the second DCI, the signal-to-noise ratio of the second DCI and the average value of the historical signal-to-noise ratio Difference.
The device according to any one of claims 9-15, wherein the processing unit is further configured to:

It is determined that the time interval between the time when the first DCI is received and the time when data is transmitted on the first resource is greater than a first time length; the first time length is determined according to a terminal device UE capability;

It is determined that the time interval between the time when the second DCI is received and the time when the data is transmitted on the second resource is greater than a second time period; the second time period is determined according to UE capabilities.
A communication device, characterized in that the device includes a processor and a communication interface,

The communication interface is used to input and/or output information;

The processor is configured to execute a computer program or instruction, so that the method described in any one of claims 1-8 is executed.
A chip system, characterized in that it includes a processor, the chip system includes at least one processor and a transceiver, the transceiver and the at least one processor are interconnected through a line, and the processor executes instructions to Perform the method of any one of claims 1-8.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and when called by a computer, the computer-executable instructions cause the computer to execute any of claims 1 to 8 The method described in one item.
A computer program product, characterized in that the computer program product stores a computer program, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes the Any one of the methods.