CN116114197A

CN116114197A - Wireless communication method, terminal equipment and network equipment

Info

Publication number: CN116114197A
Application number: CN202080105172.9A
Authority: CN
Inventors: 吴作敏
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2023-05-12
Also published as: WO2022099555A1

Abstract

A method of wireless communication, a terminal device and a network device, the method comprising: the method comprises the steps that a terminal device receives first Downlink Control Information (DCI) sent by a network device, wherein the first DCI is used for scheduling the terminal device to transmit a first physical channel carrying a first Transport Block (TB) according to a first hybrid automatic repeat request (HARQ) process, the first DCI comprises Downlink Allocation Indication (DAI) information, and the DAI information is used for determining transmission information of the first TB associated with the first HARQ process.

Description

Wireless communication method, terminal equipment and network equipment

Technical Field

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

Background

In Non-terrestrial communication network (Non-Terrestrial Networks, NTN) systems, in order to reduce the impact of Round Trip Time (RTT) of signal transmission on the hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) mechanism, a network device may configure for a certain or some downlink HARQ process of a terminal device to be enabled. For the configured downlink HARQ process, the network device does not need to receive HARQ-ACK information corresponding to the TBs transmitted in the HARQ process. Therefore, the network device can use the de-enabled downlink HARQ process to schedule a plurality of downlink data packets for the terminal device, so that the data transmission throughput can be increased, and the influence caused by RTT is reduced.

For downlink transmission or uplink transmission by using the configured and disabled HARQ process, transmission modes such as slot aggregation (slot aggregation), repeated transmission, and scheduled blind retransmission can be adopted to improve the reliability of data transmission. If the terminal device is configured with the HARQ process to enable, for downlink allocation indication (Downlink assignment index, DAI) information in downlink control information (Downlink Control Information, DCI) for scheduling transmission using the disabled HARQ process, how the network device and the terminal device understand the meaning of the value of the DAI is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, which are beneficial to ensuring that the terminal equipment and the network equipment are consistent in understanding DAI information in DCI.

In a first aspect, a method of wireless communication is provided, comprising: the method comprises the steps that a terminal device receives first Downlink Control Information (DCI) sent by a network device, wherein the first DCI is used for scheduling the terminal device to transmit a first physical channel carrying a first Transport Block (TB) according to a first hybrid automatic repeat request (HARQ) process, the first DCI comprises Downlink Allocation Indication (DAI) information, and the DAI information is used for determining transmission information of the first TB associated with the first HARQ process.

In a second aspect, there is provided a method of wireless communication, comprising: the network device sends first Downlink Control Information (DCI) to the terminal device, wherein the first DCI is used for scheduling the terminal device to transmit a first physical channel carrying a first Transport Block (TB) according to a first hybrid automatic repeat request (HARQ) process, and the first DCI comprises Downlink Allocation Indication (DAI) information which is used for determining transmission information of the first TB associated with the first HARQ process.

In a third aspect, a terminal device is provided for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the terminal device comprises means for performing the method of the first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, a network device is provided for performing the method of the second aspect or any possible implementation of the second aspect. In particular, the network device comprises means for performing the method of the second aspect or any of the possible implementations of the second aspect.

In a fifth aspect, there is provided a terminal device comprising: including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a sixth aspect, there is provided a network device comprising: including a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect or implementations thereof described above.

A seventh aspect provides a chip for implementing the method of any one of the first to second aspects or each implementation thereof.

Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to second aspects or implementations thereof described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Based on the above technical solution, by configuring the DAI information to have the meaning of the transmission information of the TB associated with the HARQ process, the network device may set the DAI information in the DCI according to the meaning, and correspondingly, the terminal device may interpret the DAI information in the DCI according to the meaning. And the method is beneficial to ensuring consistent understanding of the terminal equipment and the network equipment.

Drawings

Fig. 1 to 3 are schematic diagrams of application scenarios to which the embodiments of the present application provide.

Fig. 4 is a schematic diagram of a relation between HARQ process number and RTT.

Fig. 5 is a schematic diagram of a HARQ-ACK feedback scheme.

Fig. 6 is a schematic diagram of a receiving situation of DCI transmitted by a terminal device to a network device.

Fig. 7 is a schematic diagram of a method of wireless communication provided in an embodiment of the present application.

Fig. 8 to 14 are schematic diagrams of a setting manner of DAI information according to an embodiment of the present application.

Fig. 15 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 16 is a schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 17 is a schematic block diagram of a communication device provided in another embodiment of the present application.

Fig. 18 is a schematic block diagram of a chip provided in an embodiment of the present application.

Fig. 19 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden for the embodiments herein, are intended to be within the scope of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, advanced long term evolution (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolved system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., and the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) fabric scenario.

Optionally, the communication system in the embodiments of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; alternatively, the communication system in the embodiments of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

Alternatively, embodiments of the present application may be applied to Non-terrestrial communication network (Non-Terrestrial Networks, NTN) systems, as well as terrestrial communication network (Terrestrial Networks, TN) systems.

Embodiments of the present application describe various embodiments in connection with network devices and terminal devices, where a terminal device may also be referred to as a User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In embodiments of the present application, the terminal device may be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like. The terminal device according to the embodiments of the present application may also be referred to as a terminal, a User Equipment (UE), an access terminal device, a vehicle terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus, etc. The terminal device may also be fixed or mobile.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, and a network device (gNB) in an NR network, or a network device in a PLMN network for future evolution, or a network device in an NTN network, etc.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In this embodiment of the present application, a network device may provide a service for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application. As 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 referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices by way of example, and alternatively, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage area of each network device, which is not limited in this embodiment of the present application.

Fig. 2 is a schematic architecture diagram of another communication system according to an embodiment of the present application. Referring to FIG. 2, a terminal device 1101 and a satellite 1102 are included, and wireless communication may be provided between terminal device 1101 and satellite 1102. The network formed between terminal device 1101 and satellite 1102 may also be referred to as NTN. In the architecture of the communication system shown in FIG. 2, satellite 1102 may have the functionality of a base station and direct communication may be provided between terminal device 1101 and satellite 1102. Under the system architecture, satellite 1102 may be referred to as a network device. Alternatively, a plurality of network devices 1102 may be included in the communication system, and other numbers of terminal devices may be included within the coverage area of each network device 1102, which is not limited in this embodiment of the present application.

Fig. 3 is a schematic architecture diagram of another communication system according to an embodiment of the present application. Referring to fig. 3, the mobile terminal includes a terminal device 1201, a satellite 1202 and a base station 1203, where wireless communication between the terminal device 1201 and the satellite 1202 is possible, and communication between the satellite 1202 and the base station 1203 is possible. The network formed between the terminal device 1201, the satellite 1202 and the base station 1203 may also be referred to as NTN. In the architecture of the communication system shown in fig. 3, the satellite 1202 may not have the function of a base station, and communication between the terminal device 1201 and the base station 1203 needs to be relayed through the satellite 1202. Under such a system architecture, the base station 1203 may be referred to as a network device. Alternatively, a plurality of network devices 1203 may be included in the communication system, and the coverage area of each network device 1203 may include other number of terminal devices, which is not limited in the embodiment of the present application.

It should be noted that fig. 1 to fig. 3 are only exemplary systems to which the present application is applicable, and of course, the method in the embodiments of the present application may also be applicable to other systems, for example, a 5G communication system, an LTE communication system, etc., which is not limited in particular.

Optionally, the wireless communication system shown in fig. 1 to 3 may further include other network entities such as a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF), and the embodiment of the present application is not limited thereto.

It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. 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, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

Optionally, in an embodiment of the present application, the indication information or the configuration information includes at least one of physical layer signaling, such as downlink control information (Downlink Control Information, DCI), system messages (System Information, SI), radio resource control (Radio Resource Control, RRC) signaling, and medium access control elements (Media Access Control Control Element, MAC CE).

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the specific implementation of the present application is not limited. Such as predefined may refer to what is defined in the protocol.

In this embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description is given of related technologies of the embodiments of the present application, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as an alternative, which all belong to the protection scope of the embodiments of the present application.

HARQ mechanism in NR system

There are two levels of retransmission mechanisms in the NR system: a hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) mechanism of the medium access control (Media Access Control, MAC) layer and an automatic repeat request (Automatic Repeat reQuest, ARQ) mechanism of the radio link control protocol (Radio Link Control, RLC) layer. The retransmission of lost or erroneous data is mainly handled by the HARQ mechanism of the MAC layer and complemented by the retransmission function of the RLC layer. The HARQ mechanism of the MAC layer can provide fast retransmission and the ARQ mechanism of the RLC layer can provide reliable data transmission.

HARQ uses Stop-and-Wait Protocol (Stop-and-Wait Protocol) to transmit data. In the stop-wait protocol, after the transmitting end transmits a Transport Block (TB), it stops waiting for acknowledgement. Thus, the sender stops waiting for acknowledgements after each transmission, resulting in low user throughput. Thus, NR uses multiple parallel HARQ processes, and when one HARQ process is waiting for acknowledgement information, the transmitting end can continue to transmit data using another HARQ process. These HARQ processes together constitute a HARQ entity that incorporates a stop-and-wait protocol, allowing continuous transmission of data. HARQ includes uplink HARQ and downlink HARQ. Uplink HARQ is for uplink data transmission, and downlink HARQ is for downlink data transmission. The two are independent from each other.

In some cases, the terminal device has a respective HARQ entity for each serving cell. Each HARQ entity maintains a set of parallel downlink HARQ processes and a set of parallel uplink HARQ processes. As an example, a maximum of 16 HARQ processes are supported per uplink and downlink carrier. The network device may indicate the maximum number of HARQ processes to the terminal device through a radio resource control (Radio Resource Control, RRC) signaling semi-static configuration according to the network device deployment scenario. Alternatively, in some embodiments, if the network device does not provide the corresponding configuration parameters, the default number of HARQ processes for the downlink is 8, and the maximum number of HARQ processes supported for each carrier for the uplink is always 16. Each HARQ process corresponds to a HARQ process ID (also referred to as HARQ process number). For the downlink, the broadcast control CHannel (Broadcast Control chnnel, BCCH) uses a dedicated broadcast HARQ process. For uplink, message 3 (Msg 3) transmission in the random process uses HARQ ID 0.

In some embodiments, for terminal devices that do not support downlink space division multiplexing, each downlink HARQ process can only process 1 TB simultaneously; for terminal devices supporting downlink space division multiplexing, each downlink HARQ process may process 1 or 2 TBs simultaneously. Each uplink HARQ process of the terminal device simultaneously processes 1 TB.

HARQ is classified into synchronous and asynchronous types in the time domain and into non-adaptive and adaptive types in the frequency domain. The NR uplink and downlink use asynchronous adaptive HARQ mechanisms. For asynchronous HARQ, the time interval between retransmission and last transmission of the same TB is not fixed. The adaptive HARQ can change the frequency domain resources and MCS used for retransmission.

In connection with fig. 4, a relationship between the number of supported HARQ processes and Round Trip Time (RTT) will be described by taking downlink transmission as an example. As shown in fig. 4, the maximum number of HARQ processes configured by the terminal device is 16, so that in the case where the RTT is small, for example, less than 16ms, the maximum throughput of the terminal device is not affected, or if the RTT is less than 16ms, the terminal device may always have parallel HARQ processes for data transmission when there is traffic to be transmitted. Of course, if RTT is large, for example, much greater than 16ms, there may be a situation that all HARQ processes of the terminal device are used for data transmission and feedback of the network device is not obtained, so that the terminal device has service to be transmitted, but no HARQ process can be used, and thus the throughput of data transmission on the terminal device side may be affected.

HARQ-ACK feedback in NR systems

For terminal devices with downlink traffic, the network device may schedule transmission of a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) for the terminal device via downlink control information (Downlink Control Information, DCI). The DCI includes indication information of a physical uplink control channel (Physical Uplink Control Channel, PUCCH) resource, and after receiving the PDSCH, the terminal device feeds back a decoding result (acknowledgement (ACK) information or negative acknowledgement (Negative Acknowledge, NACK) information) of the PDSCH to the network device through the PUCCH resource. Wherein, supporting dynamic determination of HARQ feedback timing in NR system. The network device performs PDSCH reception through the DCI scheduling terminal device, where the DCI includes indication information of an uplink feedback resource, such as a PUCCH resource, used for transmitting HARQ-ACK corresponding to the PDSCH.

As an example, the indication information may include:

PUCCH resource indication (PUCCH resource indicator): for determining PUCCH resources;

HARQ feedback timing indication information (e.g., PDSCH-to-harq_ feedback timing indicator): the time slot for dynamically determining the time domain position of the uplink feedback resource, e.g. the PUCCH resource for HARQ feedback, is generally denoted by K1.

The HARQ feedback timing indication information is used to indicate a value in the HARQ feedback timing set. The set of HARQ feedback timing may be predefined or network device configured. As an example, the HARQ feedback timing indication information includes 3 bits, a first value in the HARQ feedback timing set is indicated when the HARQ feedback timing indication information is 000, a second value in the HARQ feedback timing set is indicated when the HARQ feedback timing indication information is 001, and so on.

The terminal equipment comprises semi-static codebook feedback and dynamic codebook feedback when HARQ-ACK feedback is carried out. If the terminal device is configured with dynamic codebook feedback, the DCI format of the scheduled PDSCH includes a downlink allocation indication (Downlink assignment index, DAI) information field:

DAI count (C-DAI) information, wherein the C-DAI information is used for determining which downlink transmission scheduled by the current DCI is in the HARQ feedback window, and the ordering mode of the C-DAI information is ordered according to the detection opportunity sequence of the PDCCH.

Optionally, if the scenario is carrier aggregation, the DCI may further include:

total DAI (T-DAI) information used to determine how many downlink transmissions are included in the HARQ feedback window until the current DCI schedule is cut.

The HARQ feedback window may be determined according to the HARQ feedback timing set or HARQ feedback timing indication information. Alternatively, one HARQ feedback window corresponds to one HARQ-ACK feedback time unit (e.g., PUCCH slot) or one HARQ-ACK feedback resource (e.g., PUCCH feedback resource). As the standard evolves, the HARQ feedback timing indication information may indicate an invalid value in addition to an effective value. When the HARQ feedback timing indication information indicates an invalid value, it may indicate that the time domain position of the uplink feedback resource for feeding back HARQ-ACK information is temporarily uncertain.

And the terminal equipment can determine the information such as the HARQ-ACK feedback codebook corresponding to the downlink transmission, the PUCCH resource used for feeding back the HARQ-ACK information, the time slot for feeding back the HARQ-ACK information and the like according to the information.

For the case that the network device schedules transmission of a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) for the terminal device through downlink control information (Downlink Control Information, DCI), the DCI may also include a DAI information field, where the DAI information field is used to indicate T-DAI information, or the DAI information field is used to determine the size of a HARQ-ACK codebook multiplexed on the PUSCH scheduled by the DCI.

Fig. 5 gives an example. As shown in fig. 5, if K1 in DCI received by the terminal device on slot n-3 is 3 and C-dai=1 and the DCI schedules PDSCH1; k1 in DCI received on slot n-2 is 2 and C-dai=2 and the DCI schedules PDSCH2; k1 in the DCI received on slot n-1 is 1 and C-dai=3 and the DCI schedules PDSCH3. That is, the HARQ feedback timing indication information K1 included in the DCI indicates that the feedback time unit is slot n, and PDSCH1, PDSCH2, and PDSCH3 are the 1 st, 2 nd, and 3 rd downlink transmissions in the HARQ feedback window, respectively.

When the terminal equipment generates an HARQ-ACK codebook to be transmitted on a time slot n (or PUCCH 1), the HARQ-ACK codebook sequentially comprises decoding results of a PDSCH1, a PDSCH2 and a PDSCH3.

Table 1 shows an exemplary table indicating the number of downlink transmissions when C-DAI information in DCI scheduled for downlink includes 2 bits. Table 2 shows an exemplary table indicating the number of downlink transmissions when the C-DAI information in the DCI for scheduling downlink includes 1 bit. Table 3 shows an exemplary table indicating the number of downlink transmissions when T-DAI information in DCI for scheduling uplink includes 2 bits. Where LSB represents the low order bits (Least Significant Bit, LSB) and MSB represents the high order bits (most significant bits, MSB).

The explanation is given taking table 1 as an example. As shown in table 1, the range of the value of the C-DAI information is 1 to 4, and the terminal device determines the number of downlink transmissions corresponding to the value of M according to the C-DAI information and the reception condition of the downlink transmissions, assuming that the value indicated by the C-DAI information received by the terminal device is M. For example, the 1 st downlink transmission, C-dai=1; downlink transmission 2, C-dai=2; 3 rd downlink transmission, C-dai=3; downlink transmission 4, C-dai=4; downlink transmission 5 th, C-dai=1; downlink transmission 6 th, C-dai=2; the 7 th downlink transmission, C-dai=3; downlink transmission 8 th, C-dai=4; and so on.

TABLE 1

TABLE 2

TABLE 3 Table 3

In NTN systems, the RTT of signal transmission is large because the communication distance between the terminal device and the satellite (or network device) is long. In GEO systems, the RTT of the signal transmission may be on the order of hundred milliseconds, e.g., the RTT of the signal transmission may be about 600ms at maximum. In LEO systems, the RTT of the signal transmission may be in the order of tens of milliseconds. Since RTT of the NTN system is much greater than RTT of the terrestrial communication system, HARQ mechanism in the NR system is no longer applicable to the NTN system.

As a solution: configuring HARQ process de-enablement

The network device may configure for certain or some downlink HARQ processes of the terminal device to be enabled. For the configured downlink HARQ process, the network device can reuse the HARQ process for data transmission without receiving the HARQ-ACK information corresponding to the TB transmitted in the HARQ process. Therefore, the network device can use the de-enabled downlink HARQ process to schedule a plurality of downlink data packets for the terminal device, so that the data transmission throughput can be increased, and the influence caused by RTT is reduced. For downlink HARQ processes that are not configured to be enabled, the same HARQ retransmission mechanism as the NR system may be used for downlink transmissions between the network device and the terminal device.

For the configured and disabled uplink HARQ process, the network device does not need to receive the PUSCH transmitted by the terminal device through the HARQ process, and can reuse the HARQ process for other PUSCH transmission. Therefore, the network device can use the disabled uplink HARQ process to schedule a plurality of uplink data packets for the terminal device, so that the data transmission throughput can be increased, and the influence caused by RTT is reduced. For uplink HARQ processes that are not configured to be enabled, the same HARQ retransmission mechanism as the NR system may be used for uplink transmissions between the network device and the terminal device.

That is, the type of HARQ process of the terminal device may correspond to a disabled state (e.g., configured to be disabled, also referred to as a disabled state), or may correspond to an enabled state (e.g., not configured to be enabled).

For downlink transmission or uplink transmission by using the configured and disabled HARQ process, transmission modes such as slot aggregation (slot aggregation), repeated transmission, and scheduled blind retransmission can be adopted to improve the reliability of data transmission.

Problem 1: if the terminal device is configured with the HARQ process to enable, for the DAI information in the DCI scheduled for transmission using the disabled HARQ process, the network device and the terminal device understand how to take the value of the DAI in the DCI.

Problem 2: in case at least one HARQ process of the terminal device is configured to be enabled, the disabled HARQ process may be reused multiple times within the RTT time window to improve the throughput of the data transmission. In the following example, the terminal device does not need to perform HARQ-ACK feedback for the TB transmitted in the de-enabled HARQ process, or the network device does not need to receive HARQ-ACK information corresponding to the TB transmitted in the HARQ process, and can reuse the HARQ process for PDSCH transmission. Therefore, the network device can use the disabled HARQ process to schedule a plurality of data packets for the terminal device, so that the influence caused by RTT can be reduced.

Fig. 6 gives an example, for HARQ process 0 configured for HARQ-ACK feedback de-enablement, the network device may schedule transmission of PDSCH 0, PDSCH 1, and PDSCH 2 using DCI 0, DCI 1, and DCI 2. When the terminal device receives NDI information in DCI scheduled by the network device for the HARQ process 0, it indicates that the HARQ process 0 is used for transmitting a new data packet. When the terminal device receives that the new data indication (New Data Indicator, NDI) information in the DCI scheduled by the network device for the HARQ process 0 is not flipped, it indicates that the HARQ process 0 is used for transmitting the retransmission of the last data packet. However, in the example of fig. 6, if the terminal device receives only DCI 0 and DCI 2 and does not receive DCI 1, the terminal device may consider that the transport block carried in PDSCH 2 is the same as the transport block carried in PDSCH 0, and in fact, the transport block carried in PDSCH 2 and the transport block carried in PDSCH 0 transmitted by the network device are different transport blocks, resulting in inconsistent understanding of the terminal device and the network device.

Fig. 7 is a schematic flow chart of a method 200 of wireless communication provided in an embodiment of the present application. The method 200 may be performed by a terminal device in the communication system shown in fig. 1-3, as shown in fig. 7, the method 200 may include at least part of the following:

S210, the terminal device receives first downlink control information DCI sent by the network device, where the first DCI is used to schedule the terminal device to transmit a first physical channel carrying a first transport block TB according to a first hybrid automatic repeat request HARQ process, where the first DCI includes downlink allocation indication DAI information, where the DAI information is used to determine transmission information of the first TB associated with the first HARQ process.

It should be understood that, in the embodiment of the present application, the first DCI may be used for scheduling a downlink physical channel and may also be used for scheduling an uplink physical channel, which is not limited in this application. That is, the first physical channel may be a downlink physical channel or an uplink physical channel.

Optionally, the first physical channel comprises one physical channel, or the first physical channel comprises a plurality of consecutive physical channels. Optionally, the plurality of consecutive physical channels comprises: a plurality of consecutive physical channels in the time domain, or time slots corresponding to the plurality of consecutive physical channels, are consecutive in the time domain.

Optionally, the plurality of consecutive physical channels are used for repeating transmission of the first TB.

Optionally, the repeated transmission of the first TB on the plurality of consecutive physical channels is considered a transmission of the first TB.

Optionally, in some embodiments, the first physical channel may include, for example, but not limited to, PDSCH, and the first HARQ process is a downlink HARQ process.

In this case, the first DCI is used to schedule downlink transmission, or the first DCI is used to schedule the terminal device to transmit a first physical channel carrying a first transport block TB according to a first hybrid automatic repeat request HARQ process, including:

the first DCI is used for scheduling the terminal equipment to receive the PDSCH carrying the first TB according to the first HARQ process.

It should be understood that, in the embodiment of the present application, the format of the first DCI is not specifically limited, and the format of the first DCI may be an existing DCI format or a newly introduced DCI format. As one example, the first DCI corresponds to a first DCI format including at least one of DCI format 1_0, DCI format 1_1, and DCI format 1_2. As another example, the first DCI corresponds to a first DCI format including one of DCI format 1_0, DCI format 1_1, and DCI format 1_2. As yet another example, the first DCI corresponds to a first DCI format that does not include DCI format 1_0.

Alternatively, in other embodiments, the first physical channel may include, for example, but not limited to, PUSCH, and the first HARQ process is an uplink HARQ process.

In this case, the first DCI is used to schedule uplink transmission, or the first DCI is used to schedule the terminal device to transmit a first physical channel carrying a first transport block TB according to a first hybrid automatic repeat request HARQ process, including:

the first DCI is used for scheduling the terminal equipment to send the PUSCH carrying the first TB according to the first HARQ process.

It should be understood that, in the embodiment of the present application, the format of the first DCI is not specifically limited, and the format of the first DCI may be an existing DCI format or a newly introduced DCI format. As one example, the first DCI corresponds to a first DCI format including at least one of DCI format 0_0, DCI format 0_1, and DCI format 0_2. As another example, the first DCI corresponds to a first DCI format including one of DCI format 0_0, DCI format 0_1, and DCI format 0_2. As yet another example, the first DCI corresponds to a first DCI format that does not include DCI format 0_0.

In this embodiment of the present application, the first DCI corresponds to a first DCI format may refer to that the format of the first DCI is the first DCI format.

Optionally, the first DCI corresponds to a first radio network temporary identity (Radio Network Temporary Identifier, RNTI), or the first DCI is scrambled according to the first RNTI. As one example, the first RNTI includes at least one of a Cell RNTI (Cell RNTI, C-RNTI), a modulation coding scheme-Cell-RNTI (Modulation and Coding Scheme C-RNTI, MCS-C-RNTI), a Temporary C-RNTI (Temporary C-RNTI, TC-RNTI), and a configuration scheduling RNTI (Configured Scheduling RNTI, CS-RNTI). As another example, the first RNTI includes one of a C-RNTI, an MCS-C-RNTI, a TC-RNTI, and a CS-RNTI. As yet another example, the first RNTI does not include a TC-RNTI.

It should be understood that the number of bits of the DAI information is not particularly limited in the embodiments of the present application, and may be, for example, 1 bit, 2 bits or more.

As an example, in a case where the terminal device is configured with Type 1 codebook feedback (i.e., type-1 codebook feedback) and the first DCI is used to schedule uplink transmission, the DAI information includes 1 bit.

As another example, in case the terminal device is configured with Type 2 codebook feedback (i.e., type-2 codebook feedback), the DAI information includes 2 bits.

Optionally, the first DCI is used to schedule downlink transmission, and the terminal device is configured with Type 2 codebook feedback (i.e. Type-2 codebook feedback).

Optionally, the first DCI is used to schedule uplink transmission, and the terminal device is configured with Type 2 codebook feedback (i.e. Type-2 codebook feedback) or Type 1 codebook feedback (i.e. Type-1 codebook feedback).

Optionally, in some embodiments, the first HARQ process comprises one HARQ process.

Optionally, in some embodiments, the first HARQ process comprises a plurality of HARQ processes.

Optionally, in some embodiments, the first HARQ process corresponds to a non-enabled state. In other words, the first HARQ process is configured to be in a disabled state.

Optionally, in some embodiments, the HARQ feedback function state corresponding to the first HARQ process is a disabled state. Or, the HARQ feedback function state corresponding to the first HARQ process is configured to be a non-enabled state.

For example, for the downlink physical channel transmitted by using the first HARQ process, the terminal device does not need to send the HARQ-ACK feedback bit corresponding to the downlink physical channel, or the network device does not need to receive the HARQ-ACK information corresponding to the TB transmitted in the first HARQ process, and can reuse the first HARQ process for PDSCH transmission.

In the present embodiment, the disabled state is also referred to as a disabled (disabled) state.

Optionally, the first TB associated with the first HARQ process may refer to: a first TB transmitted using the first HARQ process. I.e. the embodiment of the present application is determining the information of the TB transmitted in a certain type or a certain HARQ process.

Optionally, in some embodiments, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process, for example, transmission number information (e.g., what number of transmissions), whether to first transmit (whether to first transmit or retransmit), a total number of transmitted times, a maximum number of transmitted times, and so on.

It should be appreciated that in embodiments of the present application, the first transmission is also referred to as an initial transmission, a new transmission.

Optionally, in some embodiments, the DAI information is used to determine transmission information of a physical channel associated with the first type of HARQ process and/or the second type of HARQ process.

Optionally, the first type of HARQ process comprises: and the HARQ process corresponds to a non-enabled state, or the HARQ feedback function state corresponding to the HARQ process is a non-enabled state.

Optionally, the second type of HARQ process comprises: and the HARQ process corresponds to an enabling state, or the HARQ feedback function state corresponding to the HARQ process is an enabling state.

Hereinafter, the meaning of the DAI information will be described with reference to specific embodiments.

Example 1

Optionally, in this embodiment 1, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process.

Optionally, in this embodiment 1, the transmission information of the first TB associated with the first HARQ process includes transmission number information of the first TB using the first HARQ process. For example, the first transmission.

Optionally, in this embodiment 1, the DAI information includes first DAI information, where the first DAI information is used to indicate a correspondence between the first physical channel and a number of transmissions of the first TB using the first HARQ process.

Optionally, the correspondence between the first physical channel and the number of transmissions of the first TB using the first HARQ process includes: the first physical channel is how often the first TB is transmitted using the first HARQ process. I.e. the first physical channel corresponds to the number of transmissions of the first TB transmitted using the first HARQ process.

Optionally, the first physical channel corresponds to a transmission of the first TB, wherein the first physical channel comprises one physical channel or comprises a plurality of consecutive physical channels.

Thus, the first DAI information may be used to indicate how often the first physical channel is to transmit the first TB using the first HARQ process. For example, the value indicated by the first DAI information indicates the number of transmissions of the first TB corresponding to the first physical channel using the first HARQ process.

Alternatively, in this embodiment 1, the first DAI information may be C-DAI information. That is, the C-DAI information in the first DCI may be used to indicate a correspondence between the first physical channel and the number of transmissions of the first TB using the first HARQ process. Still further, the C-DAI information indicates how often the first physical channel transmits the first TB using the first HARQ process.

For example, the C-DAI information indicates 1 when the first physical channel is the first time the first TB is transmitted using the first HARQ process, and the C-DAI information indicates 2 when the first physical channel is the second time the first TB is transmitted using the first HARQ process.

Alternatively, in other embodiments, the first DAI information may be other DAI information, such as T-DAI information, which is not limited in this application. The setting method and interpretation method of the first DAI information are described with reference to specific examples shown in fig. 8 and 9.

In the example of fig. 8, the first physical channel is PDSCH, HARQ process 0 is a downlink HARQ process, and the HARQ process 0 corresponds to a non-enabled state.

As shown in fig. 8, when the network device transmits PDSCH 0 carrying TB 0 for the first time using HARQ process 0, C-DAI in DCI 0 indicates 1; when the network device transmits PDSCH 1 carrying TB 0 for the second time using HARQ process 0, C-DAI in DCI 1 indicates 2; when the network device transmits PDSCH 2 carrying TB 0 for the third time using HARQ process 0, C-DAI in DCI 2 indicates 3; when the network device first transmits PDSCH 3 carrying TB 1 using HARQ process 0, the C-DAI in DCI 3 indicates 1, i.e. the C-DAI restarts counting; when the network device transmits PDSCH 4 carrying TB 1 for the second time using HARQ process 0, the C-DAI in DCI 4 indicates 2.

Accordingly, when the terminal device receives PDSCH 0 carrying TB 0 transmitted using HARQ process 0, if the C-DAI in DCI 0 indicates 1, the terminal device determines that this is the first transmission of TB 0; if the C-DAI in DCI 1 indicates 2, the terminal device determines that this is the second transmission of TB 0; if the C-DAI in DCI 2 indicates 3, the terminal device determines that this is the third transmission of TB 0. When the terminal device receives PDSCH 3 carrying TB 1 transmitted using HARQ process 0, if the C-DAI in DCI 3 indicates 1, the terminal device determines that this is the first transmission of TB 1; if the C-DAI in DCI 4 indicates 2, the terminal device determines that this is the second transmission of TB 1.

In the example of fig. 9, the first physical channel is PUSCH, HARQ process 0 is an uplink HARQ process, and HARQ process 0 corresponds to a disabled state.

As shown in fig. 9, when the network device schedules HARQ process 0 for the first time to transmit PUSCH 0 carrying TB 0, DAI indication 1 in DCI 0; when the network device transmits PUSCH 1 carrying TB 0 for the second time using HARQ process 0, DAI indication 2 in DCI 1; when the network device transmits PUSCH 2 carrying TB 0 for the third time using HARQ process 0, DAI indication 3 in DCI 2; when the network device first transmits PUSCH 3 carrying TB 1 using HARQ process 0, DAI indication 1 in DCI 3, i.e. DAI restart counting; when the network device transmits TB 1 using HARQ process 0 for the second time, the DAI in DCI 4 indicates 2.

Accordingly, when the terminal device receives the scheduled HARQ process 0 to transmit TB 0, if the DAI in DCI 0 indicates 1, the terminal device determines that this is the first transmission of the network device scheduled TB 0; if the DAI in DCI 1 indicates 2, the terminal device determines that this is the second transmission of network device scheduled TB 0; if the DAI in DCI 2 indicates 3, the terminal device determines that this is the third transmission of network device schedule TB 0. When the terminal device receives the scheduled HARQ process 0 to send TB 1, if the DAI in DCI 3 indicates 1, the terminal device determines that this is the first transmission of the network device scheduled TB 1; if the DAI in DCI 4 indicates 2, the terminal device determines that this is the second transmission of network device schedule TB 1.

Example 2

Optionally, in this embodiment 2, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process.

Optionally, in this embodiment 2, the transmission information of the first TB associated with the first HARQ process includes transmission number information of the first TB using the first HARQ process. Such as whether it is the first transmission.

Optionally, the DAI information includes first DAI information for determining whether the first physical channel is the first time to transmit the first TB using the first HARQ process.

Alternatively, in some embodiments, whether the first physical channel is the first transmission of the first TB using the first HARQ process may be indicated by a different value of DAI information.

For example, the first DAI information indicates that a first preset value indicates that the first physical channel is the first time the first TB is transmitted using the first HARQ process.

For another example, the first DAI information indicates that a second preset value indicates that the first physical channel is not the first time to transmit the first TB using the first HARQ process.

Wherein the first preset value and the second preset value are different.

It should be understood that embodiments of the present application are not limited to specific values of the first preset value and the second preset value.

As an example, the first preset value is 1.

As an example, if the first DAI information includes 2 bits, the second preset value is 4.

As another example, if the first DAI information includes 1 bit, the second preset value is 0.

As another example, if the first DAI information includes 2 bits, the value indicated by the first DAI information is 1 to 4, the first preset value is 1, and the second preset value is 4.

As another example, if the first DAI information includes 1 bit, the value indicated by the first DAI information is 1 or 2, the first preset value is 1, and the second preset value is 2.

As another example, if the first DAI information includes 1 bit, the value indicated by the first DAI information is 1 or 0, the first preset value is 1, and the second preset value is 0.

Alternatively, in some embodiments, the first DAI information may be C-DAI information. That is, the C-DAI information in the first DCI may be used to determine whether the first physical channel is the first transmission of the first TB using the first HARQ process.

For example, if the first downlink physical channel is the first transmission of the first TB using the first HARQ process, or the first downlink physical channel is the initial transmission of the first TB using the first HARQ process, the C-DAI is set to a first preset value; if the first downlink physical channel is not the first transmission of the first TB using the first HARQ process, or the first downlink physical channel is the retransmission of the first TB using the first HARQ process, the C-DAI is set to a second preset value.

Alternatively, in other embodiments, the first DAI information may be other DAI information, such as T-DAI information, which is not limited in this application.

Referring to fig. 10 and 11, a first preset value of 1 and a second preset value of 4 are taken as examples to describe a setting mode and an interpretation mode of the first DAI information.

In the example of fig. 10, the first physical channel is PDSCH, HARQ process 0 is a downlink HARQ process, and the HARQ process 0 corresponds to a non-enabled state.

As shown in fig. 10, when the network device transmits PDSCH 0 carrying TB 0 for the first time using HARQ process 0, C-DAI in DCI 0 indicates 1; otherwise, C-DAI indicates 4; when the network device first transmits PDSCH 3 carrying TB 1 using HARQ process 0, C-DAI in DCI 3 indicates 1; otherwise, C-dai=4 in DCI.

Accordingly, when the terminal device receives PDSCH 0 carrying TB 0 transmitted using HARQ process 0, if the C-DAI in DCI 0 indicates 1, the terminal device determines that this is the first transmission of TB 0; if the C-DAI in the DCI indicates 4, the terminal device determines that this is a retransmission of TB 0. When the terminal device receives PDSCH 3 carrying TB 1 transmitted using HARQ process 0, if the C-DAI in DCI 3 indicates 1, the terminal device determines that this is the first transmission of TB 1; if the C-DAI in the DCI indicates 4, the terminal device determines that this is a retransmission of TB 1.

In the example of fig. 11, the first physical channel is PUSCH, HARQ process 0 is an uplink HARQ process, and HARQ process 0 corresponds to a disabled state.

As shown in fig. 11, when the network device schedules HARQ process 0 for the first time to transmit TB 0, DAI in DCI indicates 1; otherwise, DAI indicates 4; when the network device schedules HARQ process 0 to transmit TB 1 for the first time, DAI in DCI indicates 1; otherwise, DAI indicates 4.

Accordingly, when the terminal device receives the network device scheduling HARQ process 0 to transmit PUSCH 0 carrying TB 0, if the DAI in DCI 0 indicates 1, the terminal device determines that this is the first transmission of the network device scheduling TB 0; if the DAI in the DCI indicates 4, the terminal device determines that this is the network device scheduling retransmission of TB 0. When the terminal equipment receives the scheduling HARQ process 0 to send the PUSCH 3 carrying the TB 1, if the DAI in the DCI 3 indicates 1, the terminal equipment determines that the transmission is the first transmission of the network equipment scheduling TB 1; if the DAI in the DCI indicates 4, the terminal device determines that this is the network device scheduling retransmission of TB 1.

Example 3

Optionally, in this embodiment 3, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process.

Optionally, in this embodiment 3, the transmission information of the first TB associated with the first HARQ process includes sum information of the number of transmissions of the first TB using the first HARQ process. Such as the total number of transmitted times.

Alternatively, in this embodiment 3, the DAI information includes second DAI information indicating a sum of transmission times of the first TB transmitted using the first HARQ process until the first physical channel is blocked. For example, the value indicated by the second DAI information is used to indicate a sum of transmission times of the first TB transmitted using the first HARQ process until the first physical channel is blocked.

Alternatively, in some embodiments, the second DAI information may be T-DAI information. That is, T-DAI information in the first DCI may be used to indicate a sum of transmission times of the first TB transmitted using the first HARQ process until the first physical channel is blocked.

For example, T-DAI indicates 1 by the time the first TB is transmitted using the first downlink HARQ process; the T-DAI indicates 2 by the time the first TB is transmitted using the first downlink HARQ process for the second time.

Alternatively, in other embodiments, the second DAI information may be other DAI information, such as C-DAI information, which is not limited in this application.

Example 4

Optionally, in this embodiment 4, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process.

Optionally, in this embodiment 4, the transmission information of the first TB associated with the first HARQ process includes sum information of the number of transmissions of the first TB using the first HARQ process. Such as a maximum number of transmissions.

Optionally, in this embodiment 4, the DAI information includes second DAI information, where the second DAI information is used to indicate a sum of transmission times of the first TB transmitted by the network device using the first HARQ process.

Alternatively, in some embodiments, the second DAI information may be T-DAI information. I.e. the T-DAI information in the first DCI is used to indicate the sum of the number of transmissions of the first TB by the network device using the first HARQ process, i.e. the maximum number of transmissions of the first TB by the network device using the first HARQ process.

For example, assuming that the number of times the network device transmits the first TB using the first downlink HARQ process is 2, the T-DAI in the DCI scheduled for the first TB to be transmitted twice indicates 2; assuming that the number of times the network device transmits the first TB using the first downlink HARQ process is 4, the T-DAI in the DCI scheduling four transmissions of the first TB is indicated 4.

Example 5

Optionally, in this embodiment 5, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process.

Optionally, in this embodiment 5, the transmission information of the first TB associated with the first HARQ process includes transmission number information of the first TB using the first HARQ process.

Alternatively, in this embodiment 5, the transmitting the transmission number information of the first TB using the first HARQ process may include: whether the first physical channel is the first time to transmit the first TB using the first HARQ process or how often the first physical channel is to transmit the first TB using the first HARQ process.

Optionally, in this embodiment 5, the DAI information includes second DAI information, where the second DAI information is used to determine whether the first physical channel is the first time to transmit the first TB using the first HARQ process, or the second DAI information is used to determine the first physical channel is the second time to transmit the first TB using the first HARQ process.

As an example, the second DAI information indicates that a third preset value indicates that the first physical channel is the first time to transmit the first TB using the first HARQ process.

As an example, the second DAI information indicates that the fourth preset value indicates that the first physical channel is not the first time to transmit the first TB using the first HARQ process.

Wherein the third preset value and the fourth preset value are different.

For example, if the first downlink physical channel is the first transmission of the first TB using the first HARQ process, or the first downlink physical channel is the initial transmission of the first TB using the first HARQ process, the second DAI information is set to a third preset value; if the first downlink physical channel is not the first transmission of the first TB using the first HARQ process, or the first downlink physical channel is the retransmission of the first TB using the first HARQ process, the second DAI information is set to a fourth preset value.

As another example, the value indicated by the second DAI information indicates how often the first physical channel transmits the first TB using the first HARQ process. For example, the second DAI information indicates 1 when the first physical channel is the first time the first TB is transmitted using the first HARQ process, and the second DAI information indicates 2 when the first physical channel is the second time the first TB is transmitted using the first HARQ process.

Alternatively, in some embodiments, the second DAI information may be T-DAI information. That is, T-DAI information in the first DCI may be used to determine whether the first physical channel is the first time to transmit the first TB using the first HARQ process or the first physical channel is the first time to transmit the first TB using the first HARQ process.

It should be understood that the embodiments of the present application are not limited to specific values of the third preset value and the fourth preset value.

As an example, the third preset value is 1.

As an example, if the second DAI information includes 2 bits, the fourth preset value is 4.

As another example, if the second DAI information includes 1 bit, the fourth preset value is 0.

As another example, if the second DAI information includes 2 bits, the value indicated by the first DAI information is 1 to 4, the third preset value is 1, and the fourth preset value is 4.

As another example, if the second DAI information includes 1 bit, the value indicated by the first DAI information is 1 or 2, the third preset value is 1, and the fourth preset value is 2.

As another example, if the second DAI information includes 1 bit, the value indicated by the first DAI information is 1 or 0, the third preset value is 1, and the fourth preset value is 0.

Example 6

Optionally, in this embodiment 6, the DAI information is used to determine transmission information of a physical channel associated with the first type of HARQ process and/or the second type of HARQ process.

Optionally, in this embodiment 6, the DAI information includes first DAI information, where the first DAI information is used to indicate how many physical channels using the first type of HARQ process for transmission are included in total until the first physical channel scheduled by the current first DCI is cut off in the HARQ feedback window. The first HARQ process corresponding to the first physical channel is a first type HARQ process.

As an example, if the terminal device receives a DCI 0 on a slot n-4 with K1 of 4 and the DCI 0 schedules HARQ process 0 to transmit PDSCH1, wherein HARQ process 0 is an uplink feedback de-enabled HARQ process, C-dai=1 in DCI 0; k1 in DCI 1 received on slot n-3 is 3 and the DCI 1 schedules HARQ process 1 to transmit PDSCH2, wherein HARQ process 1 is an uplink feedback enabled HARQ process, C-dai=1 in DCI 1; k1 in DCI 2 received on slot n-2 is 2 and the DCI 2 schedules HARQ process 2 to transmit PDSCH3, wherein HARQ process 2 is an uplink feedback enabled HARQ process, C-dai=2 in DCI 2; k1 in DCI 3 received on slot n-1 is 1 and the DCI 3 schedules HARQ process 3 to transmit PDSCH4, where HARQ process 3 is an uplink feedback de-enabled HARQ process, C-dai=2 in DCI 3. That is, the HARQ feedback timing indication information K1 included in the DCI indicates that the feedback time unit is the time slot n, PDSCH1 and PDSCH4 are downlink transmissions performed by the 1 st and 2 nd HARQ processes using uplink feedback for disabling in the HARQ feedback window, and PDSCH2 and PDSCH3 are downlink transmissions performed by the 1 st and 2 nd HARQ processes using uplink feedback for enabling in the HARQ feedback window. That is, the C-DAI of the HARQ process corresponding to the non-enabled state is counted independently and the C-DAI of the HARQ process corresponding to the enabled state is counted independently. As an optional implementation manner, when the terminal device generates the HARQ-ACK codebook to be transmitted on the time slot n, the HARQ-ACK codebook sequentially includes decoding results of the PDSCH2 and the PDSCH 3.

Optionally, in this embodiment 6, the DAI information includes first DAI information, where the first DAI information is used to indicate how many physical channels using the second type HARQ process for transmission are included in total until the first physical channel scheduled by the current first DCI is cut off in the HARQ feedback window. The first HARQ process corresponding to the first physical channel is a first type HARQ process.

As an example, if the terminal device receives a DCI 0 on slot n-4 with K1 of 4 and the DCI 0 schedules HARQ process 0 to transmit PDSCH1, where HARQ process 0 is an uplink feedback de-enabled HARQ process, C-dai=4 or C-dai=0 in DCI 0 (e.g. indicating that there is no physical channel corresponding to the enabled HARQ process transmission); k1 in DCI 1 received on slot n-3 is 3 and the DCI 1 schedules HARQ process 1 to transmit PDSCH2, where HARQ process 1 is an uplink feedback enabled HARQ process, and C-dai=1 in DCI 1 (e.g., a physical channel representing 1 HARQ process transmission for the corresponding enabled state); k1 in DCI 2 received on slot n-2 is 2 and the DCI 2 schedules HARQ process 2 to transmit PDSCH3, where HARQ process 2 is an uplink feedback enabled HARQ process, and C-dai=2 in DCI 2 (e.g., a physical channel representing 2 HARQ process transmissions for the corresponding enabled state); k1 in DCI 3 received on slot n-1 is 1 and the DCI 3 schedules HARQ process 3 to transmit PDSCH4, where HARQ process 3 is an uplink feedback de-enabled HARQ process, and C-dai=2 in DCI 3 (e.g., a physical channel representing 2 HARQ process transmissions for the corresponding enabled state). That is, the HARQ feedback timing indication information K1 included in the DCI indicates that the feedback time unit is the time slot n, PDSCH1 and PDSCH4 are downlink transmissions performed by the HARQ process that is enabled by the uplink feedback in the HARQ feedback window, and PDSCH2 and PDSCH3 are downlink transmissions performed by the 1 st and 2 nd HARQ processes that are enabled by the uplink feedback in the HARQ feedback window. That is, the C-DAI of the HARQ process corresponding to the non-enabled state is not increased relative to the C-DAI count in the previous received DCI, and the C-DAI of the HARQ process corresponding to the enabled state is increased by one relative to the C-DAI count in the previous received DCI. As an optional implementation manner, when the terminal device generates the HARQ-ACK codebook to be transmitted on the time slot n, the HARQ-ACK codebook sequentially includes decoding results of the PDSCH2 and the PDSCH 3.

In the above example, assuming that one physical channel corresponds to 1-bit feedback information, the terminal device receives DCI 0, DCI 1, and DCI 3 and does not receive DCI 2.

As an optional implementation manner, when the terminal device generates the HARQ-ACK codebook to be transmitted on the time slot n, the HARQ-ACK codebook sequentially includes the decoding result of the PDSCH2 and 1-bit NACK occupation information. That is, in this case, the terminal device determines that feedback information corresponding to 2 physical channels needs to be fed back according to C-dai=2 in DCI 3.

As another alternative embodiment, when the terminal device generates the HARQ-ACK codebook to be transmitted in the time slot n, the HARQ-ACK codebook only includes the decoding result of the PDSCH 2. That is, in this case, the terminal device determines that feedback information corresponding to 1 physical channel needs to be fed back according to the received DCI of the last HARQ process corresponding to the enabled state, i.e., C-dai=1 in DCI 1.

Alternatively, in some embodiments, the first DAI information may be C-DAI information.

Alternatively, in other embodiments, the first DAI information may be T-DAI information.

Example 7

Optionally, in this embodiment 7, the DAI information is used to determine transmission information of a physical channel associated with the first type HARQ process and/or the second type HARQ process.

Optionally, in this embodiment 7, the first DCI is used to schedule the terminal device to transmit, according to a first hybrid automatic request retransmission HARQ process, a first physical channel carrying a first transport block TB, including: the first DCI is used to activate a semi-persistent scheduling (semi-persistent scheduling, SPS) configuration, wherein a first PDSCH (i.e., a first physical channel) corresponding to the first DCI is transmitted through a first HARQ process. Wherein the first HARQ process corresponds to a de-enabled state. Optionally, the first PDSCH is the first SPS PDSCH after SPS configuration activation.

Optionally, in this embodiment 7, the DAI information includes first DAI information, and a count of the first DAI information is incremented by one, or the first DAI information is used to indicate a HARQ-ACK feedback position corresponding to the first DCI or the first PDSCH in the HARQ-ACK codebook.

Optionally, the HARQ-ACK feedback location indicated by the first DAI information is used to feed back ACK information corresponding to the first DCI. For example, if the terminal device correctly receives the first DCI, an ACK is correspondingly fed back. Alternatively, the feedback is feedback on the successful activation of the SPS configuration.

Optionally, the HARQ-ACK feedback location indicated by the first DAI information is used to feed back a decoding result corresponding to the first PDSCH. For example, if the terminal device correctly receives the first PDSCH, the corresponding feedback ACK; otherwise, the NACK is fed back correspondingly.

Alternatively, in other embodiments, the first DAI information may be T-DAI information. It should be understood that the above embodiments 1 to 7 may be implemented alone or in combination, for example, embodiment 1 and embodiment 3 may be implemented in combination, or embodiment 1 and embodiment 4 may be implemented in combination, or embodiment 1 and embodiment 5 may be implemented in combination, and so on.

Fig. 12 shows an example of the combined implementation of embodiment 1 and embodiment 4. In the example of fig. 12, the first physical channel is PDSCH, HARQ process 0 is a downlink HARQ process, and the HARQ process 0 corresponds to a non-enabled state.

As shown in fig. 12, it is assumed that the network device determines that the number of transmissions of TB 0 using HARQ process 0 is 3, i.e., the maximum number of transmissions of TB 0 is 3. When the network device transmits PDSCH 0 carrying TB 0 for the first time using HARQ process 0, C-DAI indication 1 and t-DAI indication 3 in DCI 0; when the network device transmits PDSCH 1 carrying TB 0 for the second time using HARQ process 0, C-DAI indication 2 and t-DAI indication 3 in DCI 1; when the network device transmits PDSCH 2 carrying TB 0 for the third time using HARQ process 0, the C-DAI in DCI 2 indicates 3 and the t-DAI indicates 3. Assume that the network device determines that the number of transmissions of TB 1 using HARQ process 0 is 2, i.e., the maximum number of transmissions of TB 1 is 2. When the network device transmits PDSCH 3 carrying TB 1 for the first time using HARQ process 0, C-DAI indication 1 in DCI 3, i.e. C-DAI restart count, T-DAI indication 2; when the network device transmits PDSCH 4 carrying TB 1 using HARQ process 0 for the second time, the C-DAI in DCI 4 indicates 2 and the t-DAI indicates 2.

Accordingly, when the terminal device receives PDSCH 0 carrying TB 0 transmitted using HARQ process 0, if the C-DAI indicates 1, the t-DAI indicates 3, the terminal device determines that this is the first transmission of TB 0 and the number of times the network device transmits TB 0 is 3; if the C-DAI indicates 2 and the T-DAI indicates 3, the terminal device determines that this is the second transmission of the 3 transmissions of TB 0; if the C-DAI indicates 3 and the T-DAI indicates 3, the terminal device determines that this is the third transmission of the 3 transmissions of TB 0. When the terminal device receives PDSCH 3 carrying TB 1 transmitted using HARQ process 0, if the C-DAI indicates 1, the t-DAI indicates 2, the terminal device determines that this is the first transmission of TB 1 and the number of times the network device transmits TB 1 is 2; if the C-DAI indicates 2 and the T-DAI indicates 2, the terminal device determines that this is the second of the two transmissions of TB 1.

In summary, the network device may set the DAI information in the DCI according to the meaning of the DAI information described in the foregoing embodiment, and correspondingly, the terminal device may interpret the DAI information in the DCI according to the meaning of the DAI information described in the foregoing embodiment. And the method is beneficial to ensuring consistent understanding of the terminal equipment and the network equipment.

Optionally, in some embodiments of the present application, the DAI information may be used to determine whether the first TB and the second TB are the same, where the second TB is carried in a second physical channel that is transmitted by the terminal device last time using the first HARQ process, that is, may be used to solve the foregoing problem 2.

As an embodiment, the terminal device may determine that the first TB is different from the second TB in a case where the first physical channel is determined to be the first transmission of the first TB using the first HARQ process according to the DAI information.

As another embodiment, the terminal device may determine that the first TB is identical to the second TB in a case where it is determined from the DAI information that the first physical channel is not the first transmission of the first TB using the first HARQ process.

The specific implementation of determining whether the first physical channel transmits the first TB using the first HARQ process for the first time according to the DAI information refers to the descriptions related to the foregoing embodiments 1 to 5, and is not repeated herein for brevity.

Therefore, by giving the DAI information the meaning in the foregoing embodiments, the problem of inconsistent understanding of the network device and the terminal device in the process of scheduling channel blind retransmission can be further solved.

It should be understood that, the second TB is carried in the second physical channel that is transmitted by the terminal device using the first HARQ process last time, which means that the second TB is carried in the second physical channel that is received or transmitted by the terminal device, which may not be consistent with the network device side, because there is a case that the terminal device does not receive part of DCI of the network device.

Optionally, the second TB is second DCI scheduled.

Optionally, if it is determined that the first TB and the second TB are the same, the terminal device assumes that the first TB is a retransmission.

Optionally, if it is determined that the first TB and the second TB are different, the terminal device assumes that the first TB is a new transmission.

Optionally, in some embodiments, the method 200 further comprises:

in the case that the new data in the first DCI indicates that the NDI is not flipped, the terminal equipment determines whether the first TB is identical to the second TB according to the DAI information; and/or

And determining that the first TB is different from the second TB in the case of NDI flip in the first DCI.

The NDI flip of the first DCI indicates a new transmission, but NDI in the first DCI is not flipped and does not necessarily indicate a retransmission, for example, in the case illustrated in fig. 6, so in the embodiment of the present application, it may be further determined, in combination with DAI information, whether the first TB and the second TB are the same in the case that the NDI is not flipped.

For the foregoing example 1

As an example, if NDI information in the first DCI is flipped, the terminal device determines that the first TB is a new transmission.

As another example, if the NDI information is not flipped and the first DAI information indicates 1, the terminal device determines that the first TB is a new transmission, i.e., the first TB and the second TB are different.

As yet another example, if the NDI information is not flipped and the first DAI information does not indicate 1, the terminal device determines that the first TB is a retransmission, i.e., the first TB and the second TB are the same.

For the foregoing example 2

As another example, if the NDI information is not flipped and the first DAI information indicates a first preset value, the terminal device determines that the first TB is a new transmission, i.e., the first TB and the second TB are different.

As yet another example, if the NDI information is not flipped and the first DAI information indicates a second preset value, the terminal device determines that the first TB is a retransmission, i.e., the first TB and the second TB are the same.

For the foregoing example 5

As another example, if the NDI information is not flipped and the second DAI information indicates a third preset value, the terminal device determines that the first TB is a new transmission, i.e., the first TB and the second TB are different.

As yet another example, if the NDI information is not flipped and the second DAI information indicates a fourth preset value, the terminal device determines that the first TB is a retransmission, i.e., the first TB and the second TB are the same.

In connection with fig. 13, DCI scheduling downlink transmission is illustrated with the meaning of DAI as that in embodiment 1.

In the example of fig. 13, the first physical channel is PDSCH, HARQ process 0 is a downlink HARQ process, and the HARQ process 0 corresponds to a non-enabled state.

As shown in fig. 13, when the network device transmits PDSCH 0 carrying TB 0 for the first time using HARQ process 0, C-DAI in DCI 0 indicates 1 and ndi indicates 0; when the network device transmits PDSCH 1 carrying TB 0 for the second time using HARQ process 0, the C-DAI in DCI 1 indicates 2 and NDI indicates 0 (i.e., NDI does not flip indicating retransmission); when the network device first transmits PDSCH 2 carrying TB 1 using HARQ process 0, the C-DAI in DCI 2 indicates 1, NDI indicates 1 (i.e., C-DAI resumes counting, NDI flip indicates a new transmission); when the network device first transmits PDSCH 3 carrying TB 2 using HARQ process 0, the C-DAI in DCI 3 indicates 1 and NDI indicates 0 (i.e., C-DAI resumes counting and NDI flips indicates a new transmission); when the network device transmits PDSCH 4 carrying TB 2 using HARQ process 0 for the second time, the C-DAI in DCI 4 indicates 2 and NDI indicates 0 (i.e., NDI does not flip indicating retransmission).

Accordingly, when the terminal device receives PDSCH 0 of TB 0 transmitted using HARQ process 0, if the C-DAI in the received DCI 0 indicates 1 and the ndi indicates 0, the terminal device determines that this is the first transmission of TB 0; if the C-DAI in DCI 1 is received again and the NDI is indicated by 2, the terminal equipment determines that the transmission is the second transmission of TB 0 according to the increase of the C-DAI count and the non-flip of the NDI; if the C-DAI indication 1 and the NDI indication 1 in the DCI 2 are received again, the terminal equipment restarts counting according to the C-DAI, and the NDI is turned over, so that the first transmission of the TB 1 is determined; if the C-DAI in DCI 3 is received again and the NDI is indicated by 1 and 0, the terminal equipment starts counting again according to the C-DAI, and the NDI is turned over, so that the first transmission of TB 2 is determined; if the C-DAI in DCI 4 is received again and the NDI is indicated by 2, the terminal equipment determines that the transmission is the second transmission of TB 2 according to the increase of the C-DAI count and the non-flip of the NDI.

In some scenarios, there may be a case where the terminal device does not receive a partial DCI schedule sent by the network device, and in this case, as described above, the terminal device may determine, according to NDI information and DAI information, whether the first TB transmitted in the first HARQ process is a new transmission or a retransmission.

Optionally, in some embodiments, the terminal device determines whether the first TB and the second TB are identical according to the maximum number of transmissions of the first TB and/or the maximum number of transmissions of the second TB, and the DAI information.

Optionally, the maximum number of transmissions of one TB in the first HARQ process is S. Optionally, the value of S is predefined or configured by the network device. In this case, the maximum number of transmissions of the first TB and the second TB is S.

Optionally, the maximum transmission number of the first TB is N. Optionally, the value of N is indicated by the network device through DAI information in the DCI. For example, the value of N is indicated by the network device through T-DAI information in the DCI.

Optionally, the maximum transmission number of the second TB is M. Optionally, the value of M is indicated by the network device through DAI information in the DCI. For example, the value of M is indicated by the network device through the T-DAI information in the DCI.

For the foregoing example 3

As another example, if the NDI information is not flipped and the second DAI information in the first DCI and the second DAI information in the second DCI indicate the same value, the terminal device determines that the first TB is a new transmission, i.e., the first TB and the second TB are different. Optionally, the first DCI and the second DCI are not located in the same time unit.

For example 4 above

As another example, if the NDI information is not flipped and the second DAI information in the first DCI and the second DAI information in the second DCI indicate different values, the terminal device determines that the first TB is a new transmission, i.e., the first TB and the second TB are different.

For the combination of the foregoing examples 1 and 4

As another example, if the NDI information is not flipped and the value indicated by the first DAI information is greater than the value indicated by the second DAI information, the terminal device determines that the first TB is a new transmission, i.e., the first TB and the second TB are different.

As another example, if the NDI information is not flipped and the value indicated by the first DAI information is less than or equal to the value indicated by the second DAI information, the terminal device determines that the first TB is a retransmission, i.e., the first TB and the second TB are the same.

For the example of fig. 13, in some scenarios, as shown in fig. 14, it is assumed that the terminal device does not receive DCI 2 and DCI 3, and it is assumed that the maximum number of transmissions of one TB is 4. In this case, the terminal device determines that PDSCH1 scheduled by DCI 1 is the second transmission of TB 0 according to C-DAI indication 2 and ndi indication 0 in the received DCI 1, and then if DCI 4 is received again, the C-DAI indication 2 and ndi indication 0 in DCI 4 may be interpreted as the sixth transmission of TB 0 or the second transmission of another TB other than TB 0. Since the maximum number of transmissions of one TB is 4, the terminal device may determine that DCI 4 schedules the second transmission of another TB, i.e., the TBs carried in PDSCH1 and PDSCH 4 are different.

Alternatively, in some embodiments of the present application, the terminal device may determine, according to the maximum number of transmissions of the first TB and/or the maximum number of transmissions of the second TB, and the DAI information, whether the first TB and the second TB are identical, in a case where the first physical channel is determined not to transmit the first TB using the first HARQ process for the first time according to the DAI information.

Alternatively, in some embodiments of the present application, the terminal device may determine, according to a received DCI scheduling transmission of the first HARQ process, whether the first TB is identical to the second TB, in a case where it is determined according to the DAI information that the first physical channel is not the first transmission of the first TB using the first HARQ process.

Alternatively, in some embodiments, the meaning of the DAI information may be network device configured, or predefined, or associated with the first DCI format, or associated with the type of the first HARQ process, etc. That is, the DAI information may be used to determine transmission information of the first TB associated with the first HARQ process under certain conditions and not used to determine transmission information of the first TB associated with the first HARQ process under other conditions. For example, the DAI information may take the meanings in tables 1 to 3.

As an example, the specific condition includes that the first HARQ process corresponds to a disabled state, or that the HARQ feedback function state corresponding to the first HARQ process is a disabled state.

For example, in the case that the first HARQ process corresponds to a disabled state or the HARQ feedback function state corresponding to the first HARQ process is a disabled state, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process or the DAI information is used to determine transmission information of a physical channel associated with the first type HARQ process or the DAI information is used to determine transmission information of a physical channel associated with the second type HARQ process.

For another example, in the case that the first HARQ process corresponds to an enabled state, or the HARQ feedback function state corresponding to the first HARQ process is an enabled state, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process, or the DAI information is not used to determine transmission information of a physical channel associated with the first type HARQ process, or the DAI information is not used to determine transmission information of a physical channel associated with the second type HARQ process.

As another example, the specific condition includes that the terminal device is configured with first configuration information, where the first configuration information is used to determine meaning of the DAI information, or the first configuration information may be used to configure an interpretation manner of the DAI information. I.e. whether the first configuration information is configured or sent may be used to indicate whether the DAI information is used to determine transmission information of the first TB associated with the first HARQ process.

For example, in case the terminal device is configured with the first configuration information, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process, or the DAI information is used to determine transmission information of a physical channel associated with the first type HARQ process, or the DAI information is used to determine transmission information of a physical channel associated with the second type HARQ process.

For another example, in case the terminal device is not configured with the first configuration information, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process, or the DAI information is not used to determine transmission information of a physical channel associated with the first type HARQ process, or the DAI information is not used to determine transmission information of a physical channel associated with the second type HARQ process.

For another example, in case the terminal device is configured with the first configuration information, the DAI information is used to determine transmission information of a physical channel associated with the first type of HARQ process; alternatively, in case the terminal device is not configured with the first configuration information, the DAI information is used to determine transmission information of a physical channel associated with the HARQ process of the second type.

As yet another example, the specific condition includes the terminal device being configured with second configuration information and the second configuration information indicating a fifth preset value. The second configuration information is used for determining the meaning of the DAI information, or the second configuration information may be used for configuring the interpretation mode of the DAI information. That is, a different value of the second configuration information may be used to indicate whether the DAI information is used to determine transmission information of the first TB associated with the first HARQ process.

For example, in case the terminal device is configured with second configuration information and the second configuration information indicates a fifth preset value, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process, or the DAI information is used to determine transmission information of a physical channel associated with the first type HARQ process, or the DAI information is used to determine transmission information of a physical channel associated with the second type HARQ process.

For another example, in case the terminal device is configured with the second configuration information and the second configuration information indicates a sixth preset value, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process, or the DAI information is not used to determine transmission information of a physical channel associated with the first type HARQ process, or the DAI information is not used to determine transmission information of a physical channel associated with the second type HARQ process, wherein the fifth preset value and the sixth preset value are different.

For another example, in case the terminal device is configured with second configuration information and the second configuration information indicates a fifth preset value, the DAI information is used to determine transmission information of a physical channel associated with the first type HARQ process; or, in case the terminal device is configured with the second configuration information and the second configuration information indicates a sixth preset value, the DAI information is used to determine transmission information of a physical channel associated with the HARQ process of the second type.

As yet another example, the specific condition may include that the first DCI corresponds to the first DCI format.

For example, in case that the first DCI corresponds to the first DCI format, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process, or the DAI information is used to determine transmission information of a physical channel associated with the first type HARQ process, or the DAI information is used to determine transmission information of a physical channel associated with the second type HARQ process.

For another example, in the case where the first DCI does not correspond to the first DCI format, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process, or the DAI information is not used to determine transmission information of a physical channel associated with the first type HARQ process, or the DAI information is not used to determine transmission information of a physical channel associated with the second type HARQ process.

In summary, in the embodiments of the present application, by configuring or predefining the meaning of the DAI information for the transmission information of the TB associated with the HARQ process or the meaning of the transmission information of the DAI information for the physical channel associated with the type corresponding to the HARQ process, the network device may set the DAI information in the DCI according to the meaning, and correspondingly, the terminal device may interpret the DAI information in the DCI according to the meaning. And the method is beneficial to ensuring consistent understanding of the terminal equipment and the network equipment. Further, the terminal device can also determine whether the TB scheduled by the DCI is a new transmission or a retransmission station according to the DAI information, so that the problem of inconsistent understanding of the terminal device and the network device in the blind retransmission process of the DCI scheduling channel can be solved.

It should be understood that, in various embodiments of the present application, the size of the sequence number of each process does not mean that the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It should be noted that, on the premise of no conflict, the embodiments described in the present application and/or the technical features in the embodiments may be arbitrarily combined with each other, and the technical solutions obtained after the combination should also fall into the protection scope of the present application.

The method embodiments of the present application are described in detail above in connection with fig. 7 to 14, and the apparatus embodiments of the present application are described in detail below in connection with fig. 15 to 19, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 15 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in fig. 15, the terminal apparatus 400 includes:

a communication unit 410, configured to receive first downlink control information DCI sent by a network device, where the first DCI is configured to schedule the terminal device to transmit a first physical channel carrying a first transport block TB according to a first hybrid automatic repeat request HARQ process, where the first DCI includes downlink allocation indication DAI information, where the DAI information is configured to determine transmission information of the first TB associated with the first HARQ process.

Optionally, in some embodiments, the transmission information of the first TB associated with the first HARQ process includes transmission number information of the first TB transmitted using the first HARQ process, and the DAI information includes first DAI information indicating a correspondence between the first physical channel and transmission number of the first TB transmitted using the first HARQ process.

Optionally, in some embodiments, the correspondence between the first physical channel and the number of transmissions of the first TB using the first HARQ process includes:

the first physical channel is how often the first TB is transmitted using the first HARQ process.

Optionally, in some embodiments, the transmission information of the first TB associated with the first HARQ process includes transmission number information of the first TB using the first HARQ process, and the DAI information includes first DAI information for determining whether the first physical channel is the first time to transmit the first TB using the first HARQ process.

Optionally, in some embodiments, the first DAI information indicates that a first preset value indicates that the first physical channel is the first time to transmit the first TB using the first HARQ process; or alternatively, the process may be performed,

The first DAI information indicates that a second preset value indicates that the first physical channel is not the first transmission of the first TB using the first HARQ process, wherein the first preset value and the second preset value are different.

Optionally, in some embodiments, the first preset value is 1; and/or the number of the groups of groups,

if the first DAI information includes 2 bits, the second preset value is 4, or if the first DAI information includes 1 bit, the second preset value is 0.

Optionally, in some embodiments, the transmission information of the first TB associated with the first HARQ process includes sum of transmission times information of the first TB transmitted using the first HARQ process, and the DAI information includes second DAI information indicating a sum of transmission times of the first TB transmitted using the first HARQ process until the first physical channel.

Optionally, in some embodiments, the transmission information of the first TB associated with the first HARQ process includes sum information of transmission times of the first TB using the first HARQ process, and the DAI information includes second DAI information indicating a sum of transmission times of the first TB using the first HARQ process by the network device.

Optionally, in some embodiments, the transmission information of the first TB associated with the first HARQ process includes transmission number information of the first TB using the first HARQ process, and the DAI information includes second DAI information for determining whether the first physical channel is the first transmission of the first TB using the first HARQ process.

Optionally, in some embodiments, the second DAI information indicates that a third preset value indicates that the first physical channel is the first time to transmit the first TB using the first HARQ process; or alternatively, the process may be performed,

the second DAI information indicates that a fourth preset value indicates that the first physical channel is not the first transmission of the first TB using the first HARQ process, wherein the third preset value and the fourth preset value are different.

Optionally, in some embodiments, the third preset value is 1; and/or the number of the groups of groups,

if the second DAI information includes 2 bits, the fourth preset value is 4; or if the second DAI information includes 1 bit, the fourth preset value is 0.

Optionally, in some embodiments, the terminal device 400 includes:

and the processing unit is used for determining whether the first TB is the same as the second TB according to the DAI information, wherein the second TB is carried in a second physical channel which is transmitted by the terminal equipment by using the first HARQ process last time.

Optionally, in some embodiments, the processing unit is specifically configured to:

and if the new data in the first DCI indicates that the NDI is not flipped, determining whether the first TB is identical to the second TB according to the DAI information.

determining that the first TB is different from the second TB in a case where the first physical channel is determined to be the first transmission of the first TB using the first HARQ process according to the DAI information; or alternatively, the process may be performed,

in case it is determined from the DAI information that the first physical channel is not the first transmission of the first TB using the first HARQ process, it is determined that the first TB is identical to the second TB.

and determining whether the first TB is identical to the second TB according to the maximum transmission times of the first TB and/or the maximum transmission times of the second TB and the DAI information.

in the case that the first physical channel is determined not to transmit the first TB using the first HARQ process for the first time according to the DAI information, determining whether the first TB is identical to the second TB according to the maximum number of transmissions of the first TB and/or the maximum number of transmissions of the second TB and the DAI information.

Optionally, in some embodiments, the HARQ feedback of the first HARQ process is configured to be disabled, or the first HARQ process corresponds to a disabled state.

Optionally, in some embodiments, the first physical channel comprises one physical channel, or the first physical channel comprises a plurality of consecutive physical channels.

Optionally, in some embodiments, the plurality of consecutive physical channels are used to repeatedly transmit the first TB.

Optionally, in some embodiments, the first physical channel includes a physical downlink shared channel PDSCH, the first HARQ process is a downlink HARQ process, and the first DCI is used to schedule the terminal device to transmit, according to a first hybrid automatic repeat request HARQ process, a first physical channel carrying a first transport block TB, including:

Optionally, in some embodiments, the first DCI corresponds to a first DCI format including at least one of DCI format 1_0, DCI format 1_1, and DCI format 1_2.

Optionally, in some embodiments, the first DCI corresponds to a first DCI format that does not include DCI format 1_0.

Optionally, in some embodiments, the first physical channel includes a physical uplink shared channel PUSCH, the first HARQ process is an uplink HARQ process, and the first DCI is used to schedule the terminal device to transmit, according to a first hybrid automatic repeat request HARQ process, a first physical channel carrying a first transport block TB, including:

Optionally, in some embodiments, the first DCI corresponds to a first DCI format including at least one of DCI format 0_0, DCI format 0_1, and DCI format 0_2.

Optionally, in some embodiments, the first DCI corresponds to a first DCI format that does not include DCI format 0_0.

Optionally, in some embodiments, in a case where the terminal device is configured with type 1 codebook feedback, the DAI information comprises 1 bit; or alternatively, the process may be performed,

in case the terminal device is configured with type 2 codebook feedback, the DAI information comprises 2 bits.

Optionally, in some embodiments, in a case where the terminal device is configured with first configuration information, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process; or alternatively, the process may be performed,

In case the terminal device is not configured with the first configuration information, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process.

Optionally, in some embodiments, in a case where the terminal device is configured with second configuration information and the second configuration information indicates a fifth preset value, the DAI information is used to determine transmission information of the first TB associated with the first HARQ process; or alternatively, the process may be performed,

in case the terminal device is configured with the second configuration information and the second configuration information indicates a sixth preset value, the DAI information is not used for determining transmission information of the first TB associated with the first HARQ process, wherein the fifth preset value and the sixth preset value are different.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 7 to 14, which are not repeated herein for brevity.

Fig. 16 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of fig. 16 includes:

a communication unit 510, configured to send first downlink control information DCI to a terminal device, where the first DCI is configured to schedule the terminal device to transmit a first physical channel carrying a first transport block TB according to a first hybrid automatic repeat request HARQ process, where the first DCI includes downlink allocation indication DAI information, where the DAI information is configured to determine transmission information of the first TB associated with the first HARQ process.

Optionally, in some embodiments, the DAI information is further used to determine whether the first TB and the second TB are the same, wherein the second TB is carried in a second physical channel that the terminal device last transmitted using the first HARQ process.

Optionally, in some embodiments, in a case where new data in the first DCI indicates that NDI is not flipped, the DAI information is used to determine whether the first TB and the second TB are the same.

It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the network device 500 are respectively for implementing the corresponding flow of the network device in the method 200 shown in fig. 7 to 14, and are not repeated herein for brevity.

Fig. 17 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in fig. 17 comprises a processor 610, from which the processor 610 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 17, the communication device 600 may further comprise a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the methods in embodiments of the present application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

Optionally, as shown in fig. 17, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 630 may include a transmitter and a receiver, among others. Transceiver 630 may further include antennas, the number of which may be one or more.

Optionally, the communication device 600 may be specifically a network device in the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 600 may be specifically a mobile terminal/terminal device in the embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which are not described herein for brevity.

Fig. 18 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 18 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

Optionally, as shown in fig. 18, chip 700 may also include memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the methods in embodiments of the present application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, the chip 700 may also include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Fig. 19 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 19, the communication system 900 includes a terminal device 910 and a network device 920.

The terminal device 910 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

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

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

the method comprises the steps that a terminal device receives first Downlink Control Information (DCI) sent by a network device, wherein the first DCI is used for scheduling the terminal device to transmit a first physical channel carrying a first Transport Block (TB) according to a first hybrid automatic repeat request (HARQ) process, the first DCI comprises Downlink Allocation Indication (DAI) information, and the DAI information is used for determining transmission information of the first TB associated with the first HARQ process.
The method of claim 1, wherein the transmission information for the first TB associated with the first HARQ process comprises transmission number information for the first TB using the first HARQ process, the DAI information comprising first DAI information indicating a correspondence of the first physical channel and transmission number of the first TB using the first HARQ process.
The method of claim 2, wherein the correspondence of the first physical channel and the number of transmissions of the first TB using the first HARQ process comprises:

the first physical channel is how often the first TB is transmitted using the first HARQ process.
The method of claim 1, wherein the transmission information for the first TB associated with the first HARQ process comprises transmission number information for the first TB using the first HARQ process, the DAI information comprising first DAI information for determining whether the first physical channel is the first time to transmit the first TB using the first HARQ process.
The method of claim 4, wherein the first DAI information indicates that a first preset value indicates that the first physical channel is the first time to transmit the first TB using the first HARQ process; or alternatively, the process may be performed,

the first DAI information indicates that a second preset value indicates that the first physical channel is not the first transmission of the first TB using the first HARQ process, wherein the first preset value and the second preset value are different.
The method of claim 5, wherein the first preset value is 1; and/or the number of the groups of groups,

if the first DAI information includes 2 bits, the second preset value is 4, or if the first DAI information includes 1 bit, the second preset value is 0.
The method of any of claims 1-6, wherein the transmission information of the first TB associated with the first HARQ process comprises sum of transmission times information of the first TB transmitted using the first HARQ process, the DAI information comprising second DAI information indicating a sum of transmission times of the first TB transmitted using the first HARQ process until the first physical channel.
The method of any of claims 1-6, wherein the transmission information of the first TB associated with the first HARQ process comprises sum of transmission times information of the first TB transmitted using the first HARQ process, the DAI information comprising second DAI information indicating a sum of transmission times of the first TB transmitted by the network device using the first HARQ process.
The method of any of claims 1-6, wherein the transmission information of the first TB associated with the first HARQ process comprises transmission number information of the first TB using the first HARQ process, the DAI information comprising second DAI information for determining whether the first physical channel is the first time to transmit the first TB using the first HARQ process.
The method of claim 9, wherein the second DAI information indicates that a third preset value indicates that the first physical channel is the first time to transmit the first TB using the first HARQ process; or alternatively, the process may be performed,

the second DAI information indicates that a fourth preset value indicates that the first physical channel is not the first transmission of the first TB using the first HARQ process, wherein the third preset value and the fourth preset value are different.
The method of claim 10, wherein the third preset value is 1; and/or the number of the groups of groups,

if the second DAI information includes 2 bits, the fourth preset value is 4; or if the second DAI information includes 1 bit, the fourth preset value is 0.
The method according to any one of claims 1-11, further comprising:

and the terminal equipment determines whether the first TB is the same as the second TB according to the DAI information, wherein the second TB is carried in a second physical channel which is transmitted by the terminal equipment by using the first HARQ process last time.
The method according to claim 12, wherein the method further comprises:

and under the condition that new data in the first DCI indicates that NDI is not flipped, the terminal equipment determines whether the first TB is identical to the second TB according to the DAI information.
The method according to claim 12 or 13, wherein the terminal device determining whether the first TB and the second TB are identical according to the DAI information comprises:

in the case that the terminal device determines that the first physical channel is the first transmission of the first TB using the first HARQ process according to the DAI information, the terminal device determines that the first TB is different from the second TB; or alternatively, the process may be performed,

in case the terminal device determines that the first physical channel is not the first transmission of the first TB using the first HARQ process according to the DAI information, the terminal device determines that the first TB is identical to the second TB.
The method according to claim 12 or 13, wherein the terminal device determining whether the first TB and the second TB are identical according to the DAI information comprises: and the terminal equipment determines whether the first TB is identical to the second TB according to the maximum transmission times of the first TB and/or the maximum transmission times of the second TB and the DAI information.
The method of claim 15, wherein the method further comprises:

and under the condition that the terminal equipment determines that the first physical channel does not transmit the first TB by using the first HARQ process for the first time according to the DAI information, the terminal equipment determines whether the first TB is identical with the second TB according to the maximum transmission times of the first TB and/or the maximum transmission times of the second TB and the DAI information.
The method of any of claims 1-16, wherein the HARQ feedback of the first HARQ process is configured to be de-enabled or wherein the first HARQ process corresponds to a non-enabled state.
The method according to any of claims 1-17, wherein the first physical channel comprises one physical channel or the first physical channel comprises a plurality of consecutive physical channels.
The method of claim 18, wherein the plurality of consecutive physical channels are used for repeated transmissions of the first TB.
The method according to any of claims 1-19, wherein the first physical channel comprises a physical downlink shared channel, PDSCH, the first HARQ process is a downlink HARQ process, the first DCI is used to schedule the terminal device to transmit a first physical channel carrying a first transport block, TB, according to a first hybrid automatic request retransmission, HARQ process, comprising: the first DCI is used for scheduling the terminal equipment to receive the PDSCH carrying the first TB according to the first HARQ process.
The method of claim 20, wherein the first DCI corresponds to a first DCI format comprising at least one of DCI format 1_0, DCI format 1_1, and DCI format 1_2.
The method of claim 20, wherein the first DCI corresponds to a first DCI format that does not include DCI format 1_0.
The method according to any of claims 1-19, wherein the first physical channel comprises a physical uplink shared channel, PUSCH, the first HARQ process is an uplink HARQ process, the first DCI is used to schedule the terminal device to transmit the first physical channel carrying the first transport block, TB, according to a first hybrid automatic request retransmission, HARQ process, comprising: the first DCI is used for scheduling the terminal equipment to send the PUSCH carrying the first TB according to the first HARQ process.
The method of claim 23, wherein the first DCI corresponds to a first DCI format comprising at least one of DCI format 0_0, DCI format 0_1, and DCI format 0_2.
The method of claim 23, wherein the first DCI corresponds to a first DCI format that does not include DCI format 0_0.
The method according to any of claims 23-25, wherein the DAI information comprises 1 bit in case the terminal device is configured with type 1 codebook feedback; or alternatively, the process may be performed,

in case the terminal device is configured with type 2 codebook feedback, the DAI information comprises 2 bits.
The method according to any of claims 1-26, wherein the DAI information is used to determine transmission information of the first TB associated with the first HARQ process if the terminal device is configured with first configuration information; or alternatively, the process may be performed,

in case the terminal device is not configured with the first configuration information, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process.
The method according to any of claims 1-26, wherein the DAI information is used to determine transmission information of the first TB associated with the first HARQ process if the terminal device is configured with second configuration information and the second configuration information indicates a fifth preset value; or, in a case where the terminal device is configured with the second configuration information and the second configuration information indicates a sixth preset value, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process, wherein the fifth preset value and the sixth preset value are different.
A method of wireless communication, comprising:

the network device sends first Downlink Control Information (DCI) to the terminal device, wherein the first DCI is used for scheduling the terminal device to transmit a first physical channel carrying a first Transport Block (TB) according to a first hybrid automatic repeat request (HARQ) process, and the first DCI comprises Downlink Allocation Indication (DAI) information which is used for determining transmission information of the first TB associated with the first HARQ process.
The method of claim 29, wherein the transmission information for the first TB associated with the first HARQ process comprises transmission number information for the first TB using the first HARQ process, the DAI information comprising first DAI information indicating a correspondence of the first physical channel and transmission number of the first TB using the first HARQ process.
The method of claim 30, wherein the correspondence of the first physical channel and the number of transmissions of the first TB using the first HARQ process comprises:

the first physical channel is how often the first TB is transmitted using the first HARQ process.
The method of claim 29, wherein the transmission information for the first TB associated with the first HARQ process comprises transmission number information for the first TB using the first HARQ process, the DAI information comprising first DAI information for determining whether the first physical channel is the first time to transmit the first TB using the first HARQ process.
The method of claim 32, wherein the first DAI information indicates that a first preset value indicates that the first physical channel is the first time to transmit the first TB using the first HARQ process; or alternatively, the process may be performed,

the first DAI information indicates that a second preset value indicates that the first physical channel is not the first transmission of the first TB using the first HARQ process, wherein the first preset value and the second preset value are different.
The method of claim 33, wherein the first preset value is 1; and/or the number of the groups of groups,

if the first DAI information includes 2 bits, the second preset value is 4, or if the first DAI information includes 1 bit, the second preset value is 0.
The method of any of claims 29-34, wherein the transmission information for the first TB associated with the first HARQ process comprises sum of transmission times information for the first TB using the first HARQ process, the DAI information comprising second DAI information indicating a sum of transmission times for the first TB using the first HARQ process until the first physical channel is reached.
The method of any of claims 29-34, wherein the transmission information for the first TB associated with the first HARQ process comprises sum of transmission times information for transmitting the first TB using the first HARQ process, the DAI information comprising second DAI information indicating a sum of transmission times for the first TB using the first HARQ process by the network device.
The method of any of claims 29-34, wherein the transmission information for the first TB associated with the first HARQ process comprises transmission number information for the first TB using the first HARQ process, and wherein the DAI information comprises second DAI information for determining whether the first physical channel is the first time to transmit the first TB using the first HARQ process.
The method of claim 37, wherein the second DAI information indicates that a third preset value indicates that the first physical channel is the first time to transmit the first TB using the first HARQ process; or alternatively, the process may be performed,

the second DAI information indicates that a fourth preset value indicates that the first physical channel is not the first transmission of the first TB using the first HARQ process, wherein the third preset value and the fourth preset value are different.
The method of claim 38, wherein the third preset value is 1; and/or the number of the groups of groups,

if the second DAI information includes 2 bits, the fourth preset value is 4; or if the second DAI information includes 1 bit, the fourth preset value is 0.
The method of any of claims 29-39, wherein the DAI information is further for determining whether the first TB and a second TB are the same, wherein the second TB was carried in a second physical channel last transmitted by the terminal device using the first HARQ process.
The method of claim 40, wherein the DAI information is used to determine whether the first TB and the second TB are the same if new data in the first DCI indicates that NDI is not flipped.
The method of any of claims 29-41, wherein the HARQ feedback of the first HARQ process is configured to be de-enabled or wherein the first HARQ process corresponds to a non-enabled state.
The method of any of claims 29-42, wherein the first physical channel comprises one physical channel or the first physical channel comprises a plurality of consecutive physical channels.
The method of claim 43, wherein the plurality of consecutive physical channels are used for repeated transmissions of the first TB.
The method of any one of claims 29-44, wherein the first physical channel comprises a physical downlink shared channel, PDSCH, the first HARQ process is a downlink HARQ process, the first DCI is used to schedule the terminal device to transmit a first physical channel carrying a first transport block, TB, according to a first hybrid automatic request retransmission, HARQ process, comprising: the first DCI is used for scheduling the terminal equipment to receive the PDSCH carrying the first TB according to the first HARQ process.
The method of claim 45, wherein the first DCI corresponds to a first DCI format comprising at least one of DCI format 1_0, DCI format 1_1, and DCI format 1_2.
The method of claim 45, wherein the first DCI corresponds to a first DCI format that does not include DCI format 1_0.
The method of any one of claims 29-44, wherein the first physical channel comprises a physical uplink shared channel, PUSCH, the first HARQ process is an uplink HARQ process, the first DCI is used to schedule the terminal device to transmit the first physical channel carrying the first transport block, TB, according to a first hybrid automatic request retransmission, HARQ process, comprising: the first DCI is used for scheduling the terminal equipment to send the PUSCH carrying the first TB according to the first HARQ process.
The method of claim 48, wherein the first DCI corresponds to a first DCI format comprising at least one of DCI format 0_0, DCI format 0_1, and DCI format 0_2.
The method of claim 49, wherein the first DCI corresponds to a first DCI format that does not include DCI format 0_0.
The method according to any of claims 48-50, wherein the DAI information comprises 1 bit in case the terminal device is configured with type 1 codebook feedback; or alternatively, the process may be performed,

in case the terminal device is configured with type 2 codebook feedback, the DAI information comprises 2 bits.
The method according to any of claims 29-51, wherein the DAI information is used to determine transmission information of the first TB associated with the first HARQ process if the terminal device is configured with first configuration information; or alternatively, the process may be performed,

in case the terminal device is not configured with the first configuration information, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process.
The method according to any of claims 29-51, wherein the DAI information is used to determine transmission information of the first TB associated with the first HARQ process if the terminal device is configured with second configuration information and the second configuration information indicates a fifth preset value; or, in a case where the terminal device is configured with the second configuration information and the second configuration information indicates a sixth preset value, the DAI information is not used to determine transmission information of the first TB associated with the first HARQ process, wherein the fifth preset value and the sixth preset value are different.
A terminal device, comprising:

a communication unit, configured to receive first downlink control information DCI sent by a network device, where the first DCI is configured to schedule the terminal device to transmit a first physical channel carrying a first transport block TB according to a first hybrid automatic repeat request HARQ process, where the first DCI includes downlink allocation indication DAI information, where the DAI information is configured to determine transmission information of the first TB associated with the first HARQ process.
A network device, comprising:

a communication unit, configured to send first downlink control information DCI to a terminal device, where the first DCI is configured to schedule the terminal device to transmit a first physical channel carrying a first transport block TB according to a first hybrid automatic repeat request HARQ process, where the first DCI includes downlink allocation indication DAI information, where the DAI information is configured to determine transmission information of the first TB associated with the first HARQ process.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 28.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 28.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 28.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 28.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 28.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory for performing the method as in any of claims 29 to 53.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 29 to 53.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 29 to 53.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 29 to 53.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 29 to 53.