WO2020252708A1 - Wireless communication method, terminal device, and network device - Google Patents

Abstract

Embodiments of the present application relate to a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device receives a first physical downlink control channel (PDCCH) sent by a network device, the first PDCCH being used for indicating a state of a hybrid automatic repeat request (HARQ) process of the first PDCCH, and the state of the HARQ process comprising enabling or disabling; and the terminal device performs data processing for first PDCCH scheduling and/or data feedback processing according to the state of the HARQ process. According to the wireless communication method, the terminal device, and the network device of the embodiments of the present application, the implementation cost of the terminal device can be reduced while ensuring high data transmission rate of the terminal device.

Description

Wireless communication method, terminal equipment and network equipment Technical field

This application relates to the field of communications, in particular to a wireless communication method, terminal equipment and network equipment.

Background technique

In the communication system, due to the time-varying characteristics and multipath fading of the wireless channel, data transmission may fail. Therefore, the communication system usually adopts Hybrid Automatic Repeat Request (HARQ), and retransmits through feedback from the receiving end to ensure the reliability of transmitted data.

There is usually HARQ delay between the receiving end and the transmitting end. For ultra-long-distance wireless communication, the HARQ delay between the receiving end and the sending end will become longer. Excessive HARQ delay may cause the terminal device to process a large number of soft buffers to achieve a higher data rate. However, a large number of soft buffers may greatly increase the implementation cost of the terminal device.

Summary of the invention

The embodiments of the present application provide a wireless communication method, terminal device, and network device, which can reduce the implementation cost of the terminal device while ensuring a higher data transmission rate of the terminal device.

In a first aspect, a wireless communication method is provided, the method includes: a terminal device receives a first physical downlink control channel PDCCH sent by a network device, the first PDCCH is used to indicate hybrid automatic retransmission of the first PDCCH The status of the HARQ process, where the status of the HARQ process includes enabling or disabling;

The terminal device performs processing of data scheduled for the first PDCCH and/or feedback processing of the data according to the state of the HARQ process.

In a second aspect, a wireless communication method is provided, the method includes: a network device sends a first physical downlink control channel PDCCH to a terminal device, the first PDCCH is used to indicate the hybrid automatic repeat HARQ of the first PDCCH The status of the process, the status of the HARQ process includes enabling or disabling.

In a third aspect, a terminal device is provided, which is used to execute the method in the first aspect or its implementation manners.

Specifically, the terminal device includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.

In a fourth aspect, a network device is provided, which is configured to execute the method in the second aspect or its implementation manners.

Specifically, the network device includes a functional module for executing the method in the foregoing second aspect or each implementation manner thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.

In a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned second aspect or each of its implementation modes.

In a seventh aspect, a device is provided for implementing any one of the first aspect to the second aspect or the method in each implementation manner thereof.

Specifically, the device includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes any one of the above-mentioned first aspect to the second aspect or any of its implementation modes method.

Optionally, the device is a chip.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute any one of the first aspect to the second aspect or the method in each implementation manner thereof.

In a ninth aspect, a computer program product is provided, including computer program instructions that cause a computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.

In a tenth aspect, a computer program is provided, which when running on a computer, causes the computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.

In the above technical solution, the PDCCH sent by the network device to the terminal device can indicate whether the status of the HARQ process is enabled or disabled. By dynamically indicating the enabling and disabling of HARQ, the HARQ of the specified HARQ process can be dynamically turned on or off. Therefore, a high data rate can be achieved without increasing or reducing the soft buffer area of the terminal device, which can reduce the implementation cost of the terminal device while ensuring a higher data transmission rate of the terminal device.

Description of the drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

Fig. 2 is a sequence flowchart of HARQ operation for downlink data scheduling according to an embodiment of the present application.

Fig. 3 is a sequence flow chart of the HARQ operation of uplink data scheduling according to an embodiment of the present application.

Fig. 4 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

Fig. 5 is a schematic diagram of HARQ disabling and HARQ enabling according to an embodiment of the present application.

FIG. 6 is a schematic flowchart of a wireless communication method according to an embodiment of the present application when the first PDCCH schedules downlink data transmission.

FIG. 7 is a schematic flowchart of a wireless communication method according to an embodiment of the present application when the first PDCCH schedules uplink data transmission.

Fig. 8 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a device according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband Code) Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Wireless (New Radio, NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, on unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication systems or other communication systems, etc.

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

Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) deployment. Network scene.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. The "terminal equipment" used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment. A terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device. Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.

The network device 110 may provide services for a cell, and the terminal device 120 communicates with the network device 110 through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell may be the network device 110 (for example, a base station) The corresponding cell, the cell can belong to a macro base station or a base station corresponding to a small cell (Small cell). The small cell here can include, for example, a metro cell, a micro cell, and a pico cell. Femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.

Figure 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.

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

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article.

In order to improve the reliability of transmitted data, the communication system can generally adopt HARQ operation, and the reliability of the transmitted data can be ensured through feedback and retransmission from the data receiving end. The following describes the sequence flow of the HARQ operation in conjunction with FIG. 2 and FIG. 3.

Referring to Figure 2, for HARQ for downlink data scheduling, the network device can send a physical downlink control channel (Physical Downlink Control Channel, PDCCH) at time t0 to indicate the frequency domain resources of the scheduled physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) Allocate information and time domain information. After receiving the PDCCH at the time (t0+t1), the terminal device can demodulate the PDSCH according to the indicated frequency domain position and time domain information. Among them, t0 is the time t1 when the network device sends the PDCCH is the one-way transmission delay between the network device and the terminal device. Afterwards, the terminal device can feed back the corresponding Acknowledgment (ACK)/Negative Acknowledgment (NACK) to the network device at time (t0+t1+k0+k1), where k0 is the connection from the PDCCH to the scheduled PDSCH Time interval, k1 is the processing time for the terminal equipment to demodulate the PDSCH. That is, if the terminal device successfully demodulates the PDSCH, the terminal device sends ACK information to the network device; if the terminal device does not demodulate the PDSCH, the terminal device can send NACK information to the network device.

The network device decides whether to retransmit after receiving the feedback from the terminal device (t0+2*t1+k0+k1). Specifically, if the network device receives the ACK information, the network device sends a new data packet to the terminal device; if When the network device receives the NACK information, the network device can retransmit the data to the terminal device.

Fig. 3 is a sequence flow chart of HARQ operation for uplink data scheduling. The network device transmits the frequency domain resource allocation information and time domain information of the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) scheduled by the PDCCH indication at time t0. After the terminal device receives the PDCCH at time (t0+t1), it can send the PUSCH according to the frequency domain position and time domain information indicated by the PDCCH at time (t0+t1+k2). k2 is the terminal equipment receiving the control channel and preparing the PUSCH time. The network device can receive the PUSCH sent by the terminal device at (t0+2*t1+k2).

It can be seen from Figure 2 and Figure 3 that, regardless of the uplink and downlink, when t1 becomes longer, the HARQ operation delay will increase accordingly. For ultra-long-distance wireless communication, such as non-terrestrial communication network (Non-Terrestrial Network), the delay will become very long, in satellite communication, the two-way delay, that is, 2*t1 may exceed 500ms. In order to increase the data transmission rate, whether it is uplink HARQ or downlink HARQ, multiple HARQ processes can be performed simultaneously. Assuming that the basic unit of 5G NR PDSCH transmission is a slot, the slot can be as long as 1ms, and the two-way delay of 500ms means that 500 HARQ processes may work at the same time. In this case, the terminal device may need to reserve the same soft buffer as the number of processes, which will greatly increase the implementation cost of the terminal device.

In view of this, the embodiment of the present application proposes a wireless communication method, which can reduce the implementation cost of the terminal device while ensuring the high data transmission rate of the terminal device.

FIG. 4 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. The method described in FIG. 4 may be executed by a terminal device and a network device. The terminal device may be, for example, the terminal device 120 shown in FIG. 1, and the network device may be, for example, the network device 110 shown in FIG. 1. As shown in FIG. 4, the method 200 may include at least part of the following content.

It should be understood that the method 200 can be applied to NTN scenarios such as long-distance communications such as satellite communications. In this case, the network device can be a satellite. Of course, the method 200 can also be applied to other scenarios, which is not limited in the embodiment of the present application.

It should also be understood that the embodiments of the present application do not limit the number of carriers or BandWidth Part (BWP), that is to say, the method 200 can be used in a single carrier or a single BWP scenario, or can be used in multiple carriers (ie CA) or multiple BWP scenarios.

In 210, the network device sends a first PDCCH to the terminal device, where the first PDCCH may be used to indicate the state of the HARQ process of the first PDCCH, and the state of the HARQ process may include enabling or disabling.

In 220, the terminal device receives the first PDCCH sent by the network device.

In 230, the terminal device performs data processing and/or data feedback processing for the first PDCCH scheduled data according to the state of the HARQ process.

Among them, the embodiments of the present application do not limit the names of enabled and disabled, that is, they can also be expressed as other names. For example, disabling can also be expressed as disabling, and enabling or disabling can also be expressed as opening or closing.

A case where the first PDCCH schedules the PDSCH is taken as an example to illustrate the state of the HARQ process. When the status of the HARQ process is disabled, the terminal device does not feed back ACK/NACK to the network device after demodulating the PDSCH, as shown in HARQ process 1 and HARQ process 2 in FIG. 5. When the status of the HARQ process is enabled, the terminal device needs to feed back ACK/NACK to the network device after demodulating the PDSCH, as shown in the HARQ process x in FIG. 5.

In the embodiment of the present application, as an example, the first PDCCH may include a HARQ indicator field, and the HARQ indicator field is used to indicate the status of the HARQ process.

For example, the HARQ indicator field may include one bit, the HARQ indicator field being "1" can be used to indicate that the HARQ process status is enabled, and the HARQ indicator field being "0" can be used to indicate the HARQ process status is disabled.

For another example, the HARQ indicator field may include multiple bits, and the HARQ indicator field includes 2 bits as an example for description. If the bit of the HARQ indicator field is "00", the HARQ indicator field can indicate that the status of the HARQ process is disabled; if the bit of the HARQ indicator field is other than "00" (ie "01", "10" or "11"), the HARQ indicator field can indicate that the status of the HARQ process is enabled. Or, if the two bits of the HARQ indicator field are the same, such as "00" or "11", the HARQ indicator field can indicate that the status of the HARQ process is enabled; if the two bits of the HARQ indicator field are different, "01" Or "10", the HARQ indicator field can indicate that the status of the HARQ process is disabled.

Optionally, the HARQ indicator field can reuse any field in the first PDCCH, or the first PDCCH can also introduce a new bit field specifically for the HARQ indicator field. Exemplarily, when the first PDCCH introduces a new bit field for the HARQ indicator field, the HARQ indicator field may be located at the last bit of the first PDCCH.

As another example, the first PDCCH may indicate the status of the HARQ process through the code rate of the scheduled data part (PDSCH or PUSCH). Optionally, if the code rate of the data scheduled by the first PDCCH is lower than the threshold, the first PDCCH may indicate that the state of the HARQ process is disabled. Optionally, if the code rate of the data scheduled by the first PDCCH is greater than or equal to the threshold, the first PDCCH may indicate that the status of the HARQ process is enabled. In other words, the indication that the HARQ process status is disabled can be implicitly indicated by the bit rate of the data scheduled by the first PDCCH being lower than the threshold; the HARQ process status is enabled, indicating that the data can be scheduled by the first PDCCH The code rate is greater than or equal to the threshold to indicate implicitly.

Wherein, the threshold value may be preset on the terminal device according to the protocol, or the threshold value may also be pre-configured by the network device for the terminal device at a higher level. For example, the network device may send radio resource control (Radio Resource Control, RRC) signaling to the terminal device, where the RRC signaling indicates the threshold.

When the HARQ process status is not enabled, take the first PDCCH scheduling PDSCH as an example, and the terminal device does not feed back ACK/NACK to the network device. At this time, the terminal device does not successfully receive the data and the network device does not know If the code rate of the data scheduled by the first PDCCH is lower than the threshold, the probability of the terminal device not successfully receiving the data will be reduced, thereby ensuring data transmission.

It should be understood that the aforementioned two implementation manners for indicating the status of the HARQ process by the first PDCCH can be implemented separately or in combination, which is not limited in the embodiment of the present application. When the foregoing two implementation manners are implemented in combination, the first PDCCH may include the HARQ indicator field, and the first PDCCH may also indicate the status of the HARQ process through the code rate of the scheduled data.

The technical solutions of the embodiments of the present application will be described in detail below in conjunction with two embodiments.

Embodiment 1: The first PDCCH schedules PDSCH

As shown in Figure 6, after receiving the first PDCCH, the terminal device determines the status of the HARQ process. In an implementation manner, if the status of the HARQ process is disabled, the terminal device may not perform the physical layer to send feedback information (ACK/NACK) for PDSCH demodulation to the network device. At this time, the terminal device can use the higher layer to send feedback information to the network device, and/or the terminal device can demodulate the PDSCH according to the new data packet. Correspondingly, the network device can use the higher layer to receive the feedback information of the terminal device for PDSCH demodulation, and/or the network device can send the new data packet scheduled by the first PDCCH to the terminal device.

Optionally, the first PDCCH may also include at least one of the following fields: New Data Indicator (NDI) field, HARQ process number field, Transmit Power Control (TPC) field, and physical uplink control channel (Physical Uplink Control Channel, PUCCH) feedback offset (offset) field. Among them, the PUCCH feedback offset field is used to indicate how many time units the terminal device will feed back ACK/NACK after receiving the PDSCH. The HARQ process number field may also be called the HARQ process ID field.

Optionally, the time unit may be a subframe, a time slot, a time domain symbol (symbol), or a short transmission time interval (Short Transmission Timing Interval, sTTI), etc.

If the status of the HARQ process is disabled, the terminal device may not judge the indication of the NDI field. Further, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field may be in an invalid state at this time, or may be used for other purposes.

When at least one of the NDI domain, HARQ process number domain, TPC domain, and PUCCH feedback offset domain is used for other purposes, exemplarily, the NDI domain, HARQ process number domain, TPC domain, and PUCCH feedback offset domain At least one field may be used to indicate a protocol data unit (Protocol Data Unit, PDU) retransmission number, where the PDU retransmission number may indicate a sequence of high-level PDU retransmission. That is, the terminal device can determine the retransmitted PDU number according to at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field. Illustratively again, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field can all be set to zero, or have other fixed values, for use in a virtual cyclic redundancy check (Cyclic Redundancy Check, CRC) check.

For example, if the first PDCCH also includes the NDI field and the PUCCH feedback offset field, when the HARQ process status is not enabled, the NDI field and the PUCCH feedback offset field can be used to indicate the PDU retransmission number.

It should be understood that the specific examples in the embodiments of the present application are only intended to help those skilled in the art to better understand the embodiments of the present application, rather than limiting the scope of the embodiments of the present application.

After that, the terminal device can process the next PDCCH sent by the network device.

In another implementation manner, if the HARQ process status is enabled, the terminal device processing data scheduled for the first PDCCH may include: the terminal device processing data scheduled for the first PDCCH based on the NDI domain.

Specifically, if the first NDI value is the same as the second NDI value, the terminal device can process the retransmitted PDU, that is, combine the data obtained by demodulating the PDSCH with the data in the soft buffer under the same HARQ process. If the first NDI value is different from the second NDI value (that is, NDI switching occurs), the terminal device performs processing according to the newly transmitted PDU, that is, demodulates the PDSCH to generate a new data packet. Among them, the first NDI value is the NDI value of the first PDCCH, the second NDI value is the NDI value of the second PDCCH, the HARQ process of the second PDCCH is the same as the HARQ process of the first PDCCH, and the second PDCCH is before the first PDCCH PDCCH. That is, if the NDI value of the last scheduled PDCCH corresponding to the current HARQ process ID is the same as the current NDI value, the terminal device can process the retransmitted PDU; if the last scheduled PDCCH corresponding to the current HARQ process ID The value of the NDI is different from this time, and the terminal device can process according to the newly transmitted PDU.

It should be understood that in the embodiments of the present application, “first” and “second” are only used to distinguish different objects, but do not limit the scope of the embodiments of the present application.

If the HARQ process status is enabled, the terminal device performs feedback processing for the data scheduled by the first PDCCH according to the HARQ process status, which may include: the terminal device uses the physical layer to send feedback to the network device according to the PDSCH demodulation result information.

Specifically, if the terminal device successfully demodulates the PDSCH, the terminal device can use the physical layer to use the frequency domain resources and time domain resources indicated by the first PDCCH, based on the HARQ process number domain, TPC domain, and PUCCH feedback offset domain Send ACK information to the network device; if the terminal device does not successfully demodulate the PDSCH, the terminal device can use the physical layer, based on the frequency domain resource and time domain resource indicated by the first PDCCH, based on the HARQ process number domain, At least one of the TPC domain and the PUCCH feedback offset domain, and NACK information is sent to the network device.

For coverage enhancement, optionally, the terminal equipment may be configured for PDSCH aggregation, that is, one first PDCCH may schedule multiple identical PDSCHs. If the terminal device is configured with PDSCH aggregation, the network device may send the first PDCCH on the first time unit among the aggregated time units. Correspondingly, the terminal device can receive the first PDCCH on the first time unit among the aggregated multiple time units. Further, the terminal device may perform the operations mentioned above on the first time unit among the aggregated multiple time units. For example, if the status of the HAQR process is disabled, the terminal device can demodulate the PDSCH according to the new data packet on the first time slot of the aggregated multiple time slots.

Embodiment 2: The first PDCCH schedules PUSCH

As shown in Fig. 7, after receiving the first PDCCH, the terminal device judges the status of the HARQ process. In an implementation manner, if the HARQ process status is not enabled, the terminal device processes the data scheduled for the first PDCCH, which may include: the terminal device prepares the PUSCH according to the new data packet, that is, the terminal device sends the data to the network The device sends a new packet. Correspondingly, the network device can receive the new data packet sent by the terminal device.

Optionally, the first PDCCH may also include a TPC field and/or a PUSCH transmission offset field. The terminal device sending a new data packet to the network device may include: the terminal device sends a new data packet to the network device based on the TPC domain and/or the PUSCH transmission offset domain.

Optionally, the first PDCCH may also include an NDI field and/or a HARQ process number field. If the status of the HARQ process is disabled, the terminal device may not judge the indication of the NDI field. Further, the NDI field and/or HARQ process number field may be in an invalid state at this time, or may be used for other purposes.

When the NDI field and/or HARQ process number field is used for other purposes, for example, the NDI field and/or HARQ process number field can be used to indicate the PDU retransmission number, where the PDU retransmission number can indicate the high-level PDU retransmission number. The sequence of transmission. That is, the terminal device can determine the number of the retransmitted PDU according to the NDI field and/or the HARQ process number field. Illustratively again, the NDI field and/or the HARQ process number field may be all set to zero, or other fixed values, used for virtual CRC check.

After that, the terminal device can process the next PDCCH sent by the network device.

It should be understood that the term "and/or" in this article is only an association relationship describing the associated objects, indicating that there can be three types of relationships, for example, A and/or B can mean: A alone exists, and both A and B exist. , There are three cases of B alone. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

In an implementation manner, if the HARQ process status is enabled, the terminal device processing data scheduled for the first PDCCH may include: the terminal device processing data scheduled for the first PDCCH based on the NDI domain.

Specifically, if the first NDI value and the second NDI value are the same, the terminal device may resend the data packet under the HARQ process ID. In other words, if the NDI value of the last scheduled PDCCH corresponding to the current HARQ process number is the same, the terminal device performs processing according to the retransmitted PDU. If the first NDI value and the second NDI value are different (that is, NDI switching occurs), the terminal device can send a new data packet, that is, the terminal device can process according to the newly transmitted PDU.

When the first PDCCH includes at least one of the HARQ process number field, the TPC field, and the PUSCH transmission offset field, the terminal device resends the data packet under the HARQ process number, or the terminal device sends a new data packet, which may include: The terminal device resends the data packet under the HARQ process number or sends a new data packet according to at least one of the HARQ process number field, the TPC field and the PUSCH transmission offset field.

For coverage enhancement, optionally, the terminal device may be configured for PUSCH aggregation, that is, one first PDCCH may schedule multiple identical PUSCHs. If the terminal device is configured with PUSCH aggregation, the terminal device can send the PUSCH on the first time unit among the aggregated time units. Further, the terminal device may perform the operations mentioned above on the first time unit among the aggregated multiple time units. For example, if the status of the HAQR process is disabled, the terminal device can prepare the PUSCH according to the new data packet on the first time slot of the aggregated multiple time slots.

It should be understood that the technical solution of the method 200 may be based on different HARQ process numbers as well as different time unit numbers. Optionally, the time unit number may correspond to the HARQ process number one by one. Take the time unit as the subframe to illustrate, some subframe numbers may not have HARQ operation, that is, the state of the HARQ process is disabled; some subframe numbers may have HARQ operation, that is, the state of the HARQ process is enabled.

It should also be understood that, in addition to the PDCCH, the signaling used to indicate the status of the HARQ process number may also be other signaling, such as the Media Access Control (MAC) control element (CE), Semi-static signaling, etc.

In the embodiment of this application, the PDCCH sent by the network device to the terminal device can indicate whether the HARQ process status is enabled or disabled. By dynamically indicating HARQ enable and disable, the HARQ of the specified HARQ process can be dynamically turned on or off , Which can achieve high data rate without increasing or reducing the soft buffer area of the terminal equipment. Especially for long-distance communication, it can greatly overcome the excessively high requirements for the soft buffer of the terminal device, and can reduce the implementation cost of the terminal device while ensuring the higher data transmission rate of the terminal device.

Further, the dynamic signaling (ie, PDCCH) used in the embodiment of the present application can avoid excessively long handover time compared to semi-static signaling (such as RRC signaling).

The preferred embodiments of this application are described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details in the above-mentioned embodiments. Within the scope of the technical concept of this application, many simple modifications can be made to the technical solution of this application. These simple variants all belong to the protection scope of this application.

For example, the specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application no longer discusses various possible combinations. Explain separately.

For another example, various different implementations of this application can also be combined arbitrarily, as long as they do not violate the idea of this application, they should also be regarded as the content disclosed in this application.

It should be understood that, in the various method embodiments of the present application, the size of the sequence number of the foregoing processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not be implemented in this application. The implementation process of the example constitutes any limitation.

The wireless communication method according to the embodiment of the present application is described in detail above. The communication device according to the embodiment of the present application will be described below in conjunction with FIG. 8 to FIG. 10. The technical features described in the method embodiment are applicable to the following device embodiments.

FIG. 8 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in FIG. 8, the terminal device 300 includes:

The communication unit 310 is configured to receive a first PDCCH sent by a network device, where the first PDCCH is used to indicate the status of the HARQ process of the first PDCCH, and the status of the HARQ process includes enabling or disabling.

The processing unit 320 is configured to perform processing of data scheduled for the first PDCCH and/or feedback processing of the data according to the state of the HARQ process.

Optionally, in this embodiment of the present application, the first PDCCH includes a HARQ indicator field, and the HARQ indicator field is used to indicate the status of the HARQ process.

Optionally, in the embodiment of the present application, the code rate of the data scheduled by the first PDCCH through the first PDCCH is lower than a threshold to indicate that the status of the HARQ process is disabled.

Optionally, in the embodiment of the present application, when the first PDCCH schedules the PDSCH, the communication unit 310 is further configured to: if the HARQ process status is disabled, use the higher layer to send a solution for the PDSCH And/or the processing unit 320 is specifically configured to demodulate the PDSCH according to the new data packet.

Optionally, in this embodiment of the application, when the first PDCCH schedules the PDSCH, the first PDCCH includes at least one of the following fields: NDI field, HARQ process number field, TPC field, and PUCCH feedback offset field If the HARQ process status is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used for virtual cyclic redundancy check CRC check.

Optionally, in this embodiment of the application, when the first PDCCH schedules the PDSCH, the first PDCCH includes at least one of the following fields: NDI field, HARQ process number field, TPC field, and PUCCH feedback offset field , The processing unit 320 is further configured to: if the HARQ process status is disabled, according to at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field A field to determine the PDU number of the retransmitted protocol data unit.

Optionally, in this embodiment of the present application, when the first PDCCH schedules PUSCH, the communication unit 310 is further configured to: if the HARQ process status is disabled, send the network device New data packet scheduled by the first PDCCH.

Optionally, in this embodiment of the application, when the first PDCCH schedules the PUSCH, the first PDCCH includes the NDI field and/or the HARQ process number field. If the HARQ process status is disabled, The NDI field and/or the HARQ process number field is used for virtual CRC check.

Optionally, in the embodiment of the present application, when the first PDCCH schedules PUSCH, the first PDCCH includes the NDI field and/or the HARQ process number field, and the processing unit 320 is further configured to: if the HARQ The status of the process is not enabled, and the number of the retransmitted PDU is determined according to the NDI field and/or the HARQ process number field.

Optionally, in the embodiment of the present application, the code rate of the data scheduled by the first PDCCH through the first PDCCH is greater than or equal to the threshold to indicate that the status of the HARQ process is enabled.

Optionally, in the embodiment of the present application, the processing unit 320 is specifically configured to: if the HARQ process status is enabled, the first PDCCH includes an NDI field, and based on the NDI field, the Processing of data scheduled by the first PDCCH.

Optionally, in this embodiment of the present application, when the first PDCCH schedules the PDSCH, the processing unit 320 is specifically configured to: if the first NDI value is the same as the second NDI value, demodulate the PDSCH obtained The data is combined with the data under the same HARQ process; if the first NDI value is different from the second NDI value, demodulate the PDSCH according to a new data packet, where the first NDI value is the NDI value of the first PDCCH, The second NDI value is the NDI value of the second PDCCH, the HARQ process of the second PDCCH is the same as the HARQ process of the first PDCCH, and the second PDCCH is the PDCCH before the first PDCCH.

Optionally, in the embodiment of the present application, when the first PDCCH schedules PUSCH, the communication unit 310 is further configured to: if the first NDI value is the same as the second NDI value, resend the first PDCCH schedule If the first NDI value is different from the second NDI value, send a new data packet. The first NDI value is the NDI value of the first PDCCH, the second NDI value is the NDI value of the second PDCCH, and the HARQ process of the second PDCCH is the same as the HARQ process of the first PDCCH , And the second PDCCH is a PDCCH before the first PDCCH.

Optionally, in the embodiment of the present application, when the first PDCCH schedules the PDSCH, the communication unit 310 is further configured to: if the HARQ process status is enabled, according to the demodulation result of the PDSCH , Using the physical layer to send feedback information to the network device.

Optionally, in the embodiment of the present application, the first PDCCH further includes at least one of the following fields: HARQ process number field, TPC field, and PUCCH feedback offset field. The communication unit 310 is specifically configured to: The demodulation result of the PDSCH and at least one of the HARQ process number field, the TPC field and the PUCCH feedback offset field are used to send the feedback information to the network device by using the physical layer.

Optionally, in the embodiment of the present application, the threshold value is configured by the network device at a higher layer.

Optionally, in the embodiment of the present application, if the terminal device 300 is configured with PDSCH aggregation or PUSCH aggregation, the communication unit 310 is specifically configured to: on the first time unit among the aggregated time units , Receiving the first PDCCH.

It should be understood that the terminal device 300 may correspond to the terminal device in the method 200, and can implement the corresponding operations of the terminal device in the method 200. For the sake of brevity, details are not described herein again.

FIG. 9 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. As shown in FIG. 9, the network device 400 includes:

The communication unit 410 is configured to send a first PDCCH to a terminal device, where the first PDCCH is used to indicate the status of the HARQ process of the first PDCCH, and the status of the HARQ process includes enabling or disabling.

Optionally, in this embodiment of the present application, the first PDCCH includes a HARQ indicator field, and the HARQ indicator field is used to indicate the status of the HARQ process.

Optionally, in the embodiment of the present application, the code rate of the data scheduled by the first PDCCH through the first PDCCH is lower than a threshold to indicate that the status of the HARQ process is disabled.

Optionally, in this embodiment of the application, when the first PDCCH schedules the PDSCH, the communication unit 410 is further configured to: if the HARQ process status is disabled, use a higher layer to receive the terminal equipment The feedback information of the PDSCH demodulation, and/or, the new data packet scheduled by the first PDCCH is sent to the terminal device.

Optionally, in this embodiment of the application, when the first PDCCH schedules the PDSCH, the first PDCCH includes at least one of the following fields: NDI field, HARQ process number field, TPC field, and PUCCH feedback offset field If the HARQ process status is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used to indicate the reconfiguration of the protocol data unit PDU Mark.

Optionally, in this embodiment of the application, when the first PDCCH schedules the PDSCH, the first PDCCH includes at least one of the following fields: NDI field, HARQ process number field, TPC field, and PUCCH feedback offset field If the HARQ process status is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used for virtual cyclic redundancy check CRC check.

Optionally, in the embodiment of the present application, when the first PDCCH schedules the physical uplink shared channel PUSCH, the communication unit 410 is further configured to: if the HARQ process status is not enabled, receive the first PDCCH A new data packet scheduled by PDCCH.

Optionally, in this embodiment of the application, when the first PDCCH schedules the PUSCH, the first PDCCH includes the NDI field and/or the HARQ process number field. If the HARQ process status is disabled, The NDI field and/or the HARQ process number field is used to indicate the PDU retransmission number.

Optionally, in this embodiment of the application, when the first PDCCH schedules the PUSCH, the first PDCCH includes the NDI field and/or the HARQ process number field. If the HARQ process status is disabled, The NDI field and/or the HARQ process number field is used for virtual CRC check.

Optionally, in the embodiment of the present application, the code rate of the data scheduled by the first PDCCH through the first PDCCH is greater than or equal to the threshold to indicate that the status of the HARQ process is enabled.

Optionally, in this embodiment of the present application, the threshold value is configured by the network device 400 at a higher level.

Optionally, in the embodiment of the present application, if the terminal device is configured with PDSCH aggregation or PUSCH aggregation, the communication unit 410 is specifically configured to: on the first time unit of the multiple time units aggregated, Sending the first PDCCH.

It should be understood that the network device 400 may correspond to the network device in the method 200, and can implement the corresponding operations of the network device in the method 200. For brevity, details are not described herein again.

FIG. 10 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application. The communication device 500 shown in FIG. 10 includes a processor 510, and the processor 510 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10, the communication device 500 may further include a memory 520. The processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.

The memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.

Optionally, as shown in FIG. 10, the communication device 500 may further include a transceiver 530, and the processor 5710 may control the transceiver 530 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

Among them, the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 500 may specifically be a network device in an embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not repeated here. .

Optionally, the communication device 500 may specifically be a terminal device of an embodiment of the application, and the communication device 500 may implement the corresponding process implemented by the terminal device in each method of the embodiment of the application. For brevity, details are not repeated here. .

Fig. 11 is a schematic structural diagram of a device according to an embodiment of the present application. The apparatus 600 shown in FIG. 11 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11, the apparatus 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, the device 600 may further include an input interface 630. The processor 610 can control the input interface 630 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

Optionally, the device 600 may further include an output interface 640. The processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the device can be applied to the terminal device in the embodiment of the present application, and the device can implement the corresponding process implemented by the terminal device in the various methods of the embodiment of the present application. For brevity, details are not described herein again.

Optionally, the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For brevity, details are not described herein again.

Optionally, the device 600 may be a chip. It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.

It should be understood that the processor of 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 may be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The aforementioned 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 embodiment 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 (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 a random access memory (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), 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 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.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), 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 (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.

FIG. 12 is a schematic block diagram of a communication system 700 according to an embodiment of the present application. As shown in FIG. 12, the communication system 700 includes a terminal device 710 and a network device 720.

Wherein, the terminal device 710 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, here No longer.

The embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Repeat it again.

Optionally, the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Repeat it again.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the terminal device in the embodiment of the present application. When the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function 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 this application essentially or the part that contributes to the existing technology or the 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 are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment 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 .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (70)

A wireless communication method, characterized in that the method includes: The terminal device receives the first physical downlink control channel PDCCH sent by the network device, where the first PDCCH is used to indicate the state of the HARQ process of the first PDCCH hybrid automatic retransmission, and the state of the HARQ process includes enable or disable can; The terminal device performs processing of data scheduled for the first PDCCH and/or feedback processing of the data according to the state of the HARQ process. The method according to claim 1, wherein the first PDCCH includes a HARQ indicator field, and the HARQ indicator field is used to indicate the status of the HARQ process. The method according to claim 1 or 2, wherein the code rate of the data scheduled by the first PDCCH through the first PDCCH is lower than a threshold to indicate that the HARQ process status is disabled. The method according to any one of claims 1 to 3, wherein when the first PDCCH schedules a physical downlink shared channel PDSCH, the terminal device performs a response to the first PDCCH according to the state of the HARQ process. The processing of data scheduled by a PDCCH and/or the feedback processing of the data includes: If the state of the HARQ process is not enabled, the terminal device uses a higher layer to send feedback information for the PDSCH demodulation; and/or The terminal device demodulates the PDSCH according to the new data packet. The method according to any one of claims 1 to 4, wherein when the first PDCCH schedules a physical downlink shared channel PDSCH, the first PDCCH includes at least one of the following fields: new data indication NDI Domain, HARQ process number domain, transmission power control TPC domain and physical uplink control channel PUCCH feedback offset domain; If the HARQ process status is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used for virtual cyclic redundancy check CRC check. The method according to any one of claims 1 to 4, wherein when the first PDCCH schedules a physical downlink shared channel PDSCH, the first PDCCH includes at least one of the following domains: NDI domain, HARQ Process ID field, TPC field and PUCCH feedback offset field, the method further includes: If the HARQ process status is disabled, the terminal device determines to retransmit according to at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field The PDU number of the protocol data unit. The method according to any one of claims 1 to 3, wherein when the first PDCCH schedules a physical uplink shared channel PUSCH, the terminal device performs a response to the first PDCCH according to the state of the HARQ process. The processing of data scheduled by a PDCCH includes: If the status of the HARQ process is disabled, the terminal device sends a new data packet scheduled by the first PDCCH to the network device. The method according to any one of claims 1, 2, 3, and 7, wherein when the first PDCCH schedules a PUSCH, the first PDCCH includes an NDI field and/or a HARQ process number field; If the state of the HARQ process is not enabled, the NDI field and/or the HARQ process number field is used for virtual CRC check. The method according to any one of claims 1, 2, 3, and 7, wherein when the first PDCCH schedules a PUSCH, the first PDCCH includes an NDI field and/or a HARQ process number field, so The method also includes: If the HARQ process status is disabled, the terminal device determines the number of the retransmitted PDU according to the NDI field and/or the HARQ process number field. The method according to claim 1 or 2, wherein the code rate of the data scheduled by the first PDCCH through the first PDCCH is greater than or equal to the threshold to indicate that the HARQ process status is can. The method according to any one of claims 1, 2 and 10, wherein the terminal device processes the data scheduled for the first PDCCH according to the state of the HARQ process, comprising: If the status of the HARQ process is enabled, the first PDCCH includes a new data indicating NDI field, and the terminal device processes the data scheduled for the first PDCCH based on the NDI field. The method according to claim 11, wherein when the first PDCCH schedules a PDSCH, the terminal device performs processing on the data scheduled for the first PDCCH based on the NDI domain, comprising: If the first NDI value is the same as the second NDI value, the terminal device combines the data obtained by demodulating the PDSCH with the data under the same HARQ process; If the first NDI value is different from the second NDI value, the terminal device demodulates the PDSCH according to the new data packet; The first NDI value is the NDI value of the first PDCCH, the second NDI value is the NDI value of the second PDCCH, and the HARQ process of the second PDCCH is the same as the HARQ process of the first PDCCH , And the second PDCCH is a PDCCH before the first PDCCH. The method according to claim 11, wherein when the first PDCCH schedules a PUSCH, the terminal device performs processing on the data scheduled for the first PDCCH based on the NDI domain, comprising: If the first NDI value is the same as the second NDI value, the terminal device resends the data packet scheduled by the first PDCCH; If the first NDI value is different from the second NDI value, the terminal device sends a new data packet; The first NDI value is the NDI value of the first PDCCH, the second NDI value is the NDI value of the second PDCCH, and the HARQ process of the second PDCCH is the same as the HARQ process of the first PDCCH , And the second PDCCH is a PDCCH before the first PDCCH. The method according to any one of claims 1, 2, 10, 11 and 12, wherein when the first PDCCH schedules a PDSCH, the terminal device performs a targeted operation according to the state of the HARQ process. The feedback processing of data scheduled by the first PDCCH includes: If the state of the HARQ process is enabled, the terminal device uses the physical layer to send feedback information to the network device according to the demodulation result of the PDSCH. The method according to claim 14, wherein the first PDCCH further comprises at least one of the following fields: HARQ process number field, TPC field and PUCCH feedback offset field; According to the demodulation result of the PDSCH, the terminal device uses the physical layer to send feedback information to the network device, including: The terminal device uses the physical layer to send the feedback information to the network device according to the demodulation result of the PDSCH and according to at least one of the HARQ process number field, the TPC field, and the PUCCH feedback offset field. The method according to claim 3 or 10, wherein the threshold value is configured by the network device at a higher layer. The method according to any one of claims 1 to 16, wherein if the terminal device is configured with PDSCH aggregation or PUSCH aggregation, the terminal device receives the first physical downlink control channel PDCCH sent by the network device, include: The terminal device receives the first PDCCH on the first time unit of the aggregated multiple time units. The method according to any one of claims 1 to 17, wherein the method is applied to a non-terrestrial network communication network NTN. A wireless communication method, characterized in that the method includes: The network device sends the first physical downlink control channel PDCCH to the terminal device, where the first PDCCH is used to indicate the state of the HARQ process of hybrid automatic retransmission of the first PDCCH, and the state of the HARQ process includes enabling or disabling . The method according to claim 19, wherein the first PDCCH includes a HARQ indicator field, and the HARQ indicator field is used to indicate the status of the HARQ process. The method according to claim 19 or 20, wherein the code rate of the data scheduled by the first PDCCH through the first PDCCH is lower than a threshold to indicate that the state of the HARQ process is disabled. The method according to any one of claims 19 to 21, wherein when the first PDCCH schedules a physical downlink shared channel PDSCH, the method further comprises: If the HARQ process status is not enabled, the network device uses a higher layer to receive feedback information from the terminal device for the PDSCH demodulation; and/or The network device sends the new data packet scheduled by the first PDCCH to the terminal device. The method according to any one of claims 19-22, wherein when the first PDCCH schedules a PDSCH, the first PDCCH includes at least one of the following fields: new data indicates NDI field, HARQ process Number field, transmission power control TPC field and physical uplink control channel PUCCH feedback offset field; If the status of the HARQ process is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used to indicate protocol data unit PDU retransmission number. The method according to any one of claims 19 to 22, wherein when the first PDCCH schedules the PDSCH, the first PDCCH includes at least one of the following fields: NDI field, HARQ process number field, TPC domain and PUCCH feedback offset domain; If the HARQ process status is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used for virtual cyclic redundancy check CRC check. The method according to any one of claims 19 to 21, wherein when the first PDCCH schedules a physical uplink shared channel PUSCH, the method further comprises: If the status of the HARQ process is disabled, the network device receives a new data packet scheduled by the first PDCCH. The method according to any one of claims 19, 20, 21 and 25, wherein when the first PDCCH schedules a PUSCH, the first PDCCH includes an NDI field and/or a HARQ process number field; If the state of the HARQ process is not enabled, the NDI field and/or the HARQ process number field is used to indicate the PDU retransmission number. The method according to any one of claims 19, 20, 21 and 25, wherein when the first PDCCH schedules a PUSCH, the first PDCCH includes an NDI field and/or a HARQ process number field; If the state of the HARQ process is not enabled, the NDI field and/or the HARQ process number field is used for virtual CRC check. The method according to claim 19 or 20, wherein the code rate of the data scheduled by the first PDCCH through the first PDCCH is greater than or equal to the threshold to indicate that the HARQ process status is can. The method according to claim 21 or 28, wherein the threshold is configured by the network device at a higher level. The method according to any one of claims 19 to 29, wherein if the terminal device is configured with PDSCH aggregation or PUSCH aggregation, the network device sending the first physical downlink control channel PDCCH to the terminal device includes : The network device sends the first PDCCH on the first time unit among the aggregated time units. The method according to any one of claims 19 to 30, wherein the method is applied in a non-terrestrial network communication network NTN. A terminal device, characterized by comprising: The communication unit is configured to receive a first physical downlink control channel PDCCH sent by a network device, where the first PDCCH is used to indicate the status of the first PDCCH hybrid automatic retransmission HARQ process, and the HARQ process status includes enabling Or not enable; The processing unit is configured to perform processing of data scheduled for the first PDCCH and/or feedback processing of the data according to the state of the HARQ process. The terminal device according to claim 32, wherein the first PDCCH includes a HARQ indicator field, and the HARQ indicator field is used to indicate the status of the HARQ process. The terminal device according to claim 32 or 33, wherein the code rate of the data scheduled by the first PDCCH through the first PDCCH is lower than a threshold to indicate that the status of the HARQ process is disabled . The terminal device according to any one of claims 32 to 34, wherein when the first PDCCH schedules a physical downlink shared channel PDSCH, the communication unit is further configured to: If the status of the HARQ process is not enabled, use higher layers to send feedback information for the PDSCH demodulation; and/or The processing unit is specifically used for: Demodulate the PDSCH according to the new data packet. The terminal device according to any one of claims 32 to 35, wherein when the first PDCCH schedules a physical downlink shared channel PDSCH, the first PDCCH includes at least one of the following fields: new data indication NDI field, HARQ process number field, transmission power control TPC field and physical uplink control channel PUCCH feedback offset field; If the HARQ process status is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used for virtual cyclic redundancy check CRC check. The terminal device according to any one of claims 32 to 35, wherein when the first PDCCH schedules a physical downlink shared channel PDSCH, the first PDCCH includes at least one of the following domains: NDI domain, HARQ process number field, TPC field and PUCCH feedback offset field; If the status of the HARQ process is not enabled, the processing unit is further configured to: Determine the PDU number of the retransmitted protocol data unit according to at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field. The terminal device according to any one of claims 32 to 34, wherein when the first PDCCH schedules a physical uplink shared channel PUSCH, the communication unit is further configured to: If the state of the HARQ process is not enabled, send a new data packet scheduled by the first PDCCH to the network device. The terminal device according to any one of claims 32, 33, 34, and 38, wherein when the first PDCCH schedules a PUSCH, the first PDCCH includes an NDI field and/or a HARQ process number field; If the state of the HARQ process is not enabled, the NDI field and/or the HARQ process number field is used for virtual CRC check. The terminal device according to any one of claims 32, 33, 34 and 38, wherein when the first PDCCH schedules a PUSCH, the first PDCCH includes an NDI field and/or a HARQ process number field, The processing unit is also used for: If the status of the HARQ process is disabled, the number of the retransmitted PDU is determined according to the NDI field and/or the HARQ process number field. The terminal device according to claim 32 or 33, wherein the code rate of the data scheduled by the first PDCCH through the first PDCCH is greater than or equal to the threshold to indicate that the status of the HARQ process is Enable. The terminal device according to any one of claims 32, 33 and 41, wherein the processing unit is specifically configured to: If the status of the HARQ process is enabled, the first PDCCH includes a new data indicating NDI field, and based on the NDI field, processing data scheduled for the first PDCCH is performed. The terminal device according to claim 42, wherein when the first PDCCH schedules PDSCH, the processing unit is specifically configured to: If the first NDI value is the same as the second NDI value, combining the data obtained by demodulating the PDSCH with the data under the same HARQ process; If the first NDI value is different from the second NDI value, demodulate the PDSCH according to the new data packet; The first NDI value is the NDI value of the first PDCCH, the second NDI value is the NDI value of the second PDCCH, and the HARQ process of the second PDCCH is the same as the HARQ process of the first PDCCH , And the second PDCCH is a PDCCH before the first PDCCH. The terminal device according to claim 42, wherein when the first PDCCH schedules PUSCH, the communication unit is further configured to: If the first NDI value is the same as the second NDI value, resending the data packet scheduled by the first PDCCH; If the first NDI value is different from the second NDI value, send a new data packet; The first NDI value is the NDI value of the first PDCCH, the second NDI value is the NDI value of the second PDCCH, and the HARQ process of the second PDCCH is the same as the HARQ process of the first PDCCH , And the second PDCCH is a PDCCH before the first PDCCH. The terminal device according to any one of claims 32, 33, 41, 42 and 43, wherein when the first PDCCH schedules a PDSCH, the communication unit is further configured to: If the state of the HARQ process is enabled, the physical layer is used to send feedback information to the network device according to the demodulation result of the PDSCH. The terminal device according to claim 45, wherein the first PDCCH further comprises at least one of the following fields: HARQ process number field, TPC field, and PUCCH feedback offset field; The communication unit is specifically used for: According to the demodulation result of the PDSCH, and according to at least one of the HARQ process number field, the TPC field, and the PUCCH feedback offset field, the physical layer is used to send the feedback information to the network device. The terminal device according to claim 34 or 41, wherein the threshold value is configured by the network device at a higher level. The terminal device according to any one of claims 32 to 47, wherein if the terminal device is configured with PDSCH aggregation or PUSCH aggregation, the communication unit is specifically configured to: Receive the first PDCCH on the first time unit among the aggregated time units. A network device, characterized by comprising: The communication unit is configured to send a first physical downlink control channel PDCCH to a terminal device, where the first PDCCH is used to indicate the state of the HARQ process of hybrid automatic retransmission of the first PDCCH, and the state of the HARQ process includes enabling or Disabled. The network device according to claim 49, wherein the first PDCCH comprises a HARQ indicator field, and the HARQ indicator field is used to indicate the status of the HARQ process. The network device according to claim 49 or 50, wherein the code rate of the data scheduled by the first PDCCH through the first PDCCH is lower than a threshold to indicate that the status of the HARQ process is disabled . The network device according to any one of claims 49 to 51, wherein when the first PDCCH schedules a physical downlink shared channel PDSCH, the communication unit is further configured to: If the status of the HARQ process is disabled, use a higher layer to receive the feedback information of the terminal device for the PDSCH demodulation; and/or Sending the new data packet scheduled by the first PDCCH to the terminal device. The network device according to any one of claims 49 to 52, wherein when the first PDCCH schedules a PDSCH, the first PDCCH includes at least one of the following fields: new data indicates NDI field, HARQ Process ID field, transmission power control TPC field and physical uplink control channel PUCCH feedback offset field; If the status of the HARQ process is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used to indicate protocol data unit PDU retransmission number. The network device according to any one of claims 49 to 52, wherein when the first PDCCH schedules a PDSCH, the first PDCCH includes at least one of the following fields: NDI field, HARQ process number field , TPC domain and PUCCH feedback offset domain; If the HARQ process status is disabled, at least one of the NDI field, the HARQ process number field, the TPC field, and the PUCCH feedback offset field is used for virtual cyclic redundancy check CRC check. The network device according to any one of claims 49 to 51, wherein when the first PDCCH schedules a physical uplink shared channel PUSCH, the communication unit is further configured to: If the state of the HARQ process is not enabled, receive a new data packet scheduled by the first PDCCH. The network device according to any one of claims 49, 50, 51 and 55, wherein when the first PDCCH schedules a PUSCH, the first PDCCH includes an NDI field and/or a HARQ process number field; If the state of the HARQ process is not enabled, the NDI field and/or the HARQ process number field is used to indicate the PDU retransmission number. The network device according to any one of claims 49, 50, 51 and 55, wherein when the first PDCCH schedules a PUSCH, the first PDCCH includes an NDI field and/or a HARQ process number field; If the state of the HARQ process is not enabled, the NDI field and/or the HARQ process number field is used for virtual CRC check. The network device according to claim 49 or 50, wherein the code rate of the data scheduled by the first PDCCH through the first PDCCH is greater than or equal to the threshold to indicate that the status of the HARQ process is Enable. The network device according to claim 51 or 58, wherein the threshold value is configured by the network device at a higher level. The network device according to any one of claims 49 to 59, wherein if the terminal device is configured with PDSCH aggregation or PUSCH aggregation, the communication unit is specifically configured to: The first PDCCH is sent on the first time unit among the aggregated time units. A terminal device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute as claimed in claims 1 to 18. Any of the methods described. A network device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute as claimed in claims 19 to 31 Any one of the methods. An apparatus, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the method according to any one of claims 1 to 18. An apparatus, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the method according to any one of claims 19 to 31. A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute the method according to any one of claims 1 to 18. A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute the method according to any one of claims 19 to 31. A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 1 to 18. A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 19 to 31. A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 18. A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 19 to 31.

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