CN116156636A

CN116156636A - Control information transmission method and device

Info

Publication number: CN116156636A
Application number: CN202111346018.3A
Authority: CN
Inventors: 曹蔚
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2023-05-23

Abstract

The application provides a control information transmission method and device, which are used for reducing feedback delay of HARQ-ACK information. In the method, the terminal device may receive control information, where the control information is used to schedule N data channels. The control information may include first indication information indicating the number of time domain resources carrying HARQ-ACK information. The terminal device may send HARQ-ACK information for N data channels according to the number of time domain resources carrying HARQ-ACK information. Based on the above scheme, the terminal device can feed back the HARQ-ACK information of the N PDSCHs scheduled by the DCI according to the indication of the network device, and can reduce the time delay of the HARQ-ACK information of the PDSCH with the earlier time in the scheduled multiple PDSCHs, thereby improving the system performance.

Description

Control information transmission method and device

Technical Field

The present disclosure relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for transmitting control information.

Background

In the related art, the requirement of not less than hybrid auto repeat request-ACK (hybrid automatic repeat request-acknowledgement) information is satisfied from the time when the terminal receives the physical downlink shared channel (physical downlink shared channel, PDSCH) to the time when the terminal feeds back the HARQ-ACK information to the base station n+K ₁ Is a timing relationship of (a). Where n represents the end position of the time domain resource occupied by the scheduled PDSCH, K ₁ Represents the minimum number of slots that differ from the end position of the time domain resources occupied by the scheduled PDSCH to the start position of the time domain resources occupied by the HARQ-ACK information. In the multi-PDSCH scheduling scenario, when the terminal feeds back the HARQ-ACK information, it is necessary to end all PDSCH resources scheduled by a single downlink control information (downlink control information, DCI) and then pass through at least K ₁ After a time unit, feedback of HARQ-ACK information can be performed. Thus, the feedback delay of HARQ-ACK information may be large for a PDSCH scheduled first in the time domain, e.g., the first PDSCH.

Disclosure of Invention

The application provides a control information transmission method and device, which are used for reducing feedback delay of HARQ-ACK information.

In a first aspect, a method for transmitting control information is provided, which can be executed by a terminal device or a chip on the terminal device side. In the method, the terminal device may receive control information from the network device, the control information being used to schedule the N data channels. Wherein N is an integer greater than 1. The control information may include first indication information indicating the number of time domain resources carrying HARQ-ACK information. The terminal device may send HARQ-ACK information for N data channels according to the number of time domain resources carrying HARQ-ACK information.

In a second aspect, a method for transmitting control information is provided, which may be performed by a network device or a chip on the network device side. In the method, the network device may send control information to the terminal device, where the control information is used to schedule N data channels. Wherein N is an integer greater than 1. The control information may include first indication information indicating the number of time domain resources carrying HARQ-ACK information. The network device may receive HARQ-ACK information for N data channels according to the number of time domain resources carrying the HARQ-ACK information.

Based on the first aspect and the second aspect, the network device may indicate to the terminal device that the HARQ-ACK information is carried through the first indication informationThe terminal device may feed back HARQ-ACK information of N data channels scheduled by the network device according to the indication of the network device. In comparison with the related art, after receiving N data channels, the terminal device at least K after the end of the last data channel scheduled ₁ The technical scheme for feeding back the HARQ-ACK information of the N data channels by the time units can reduce the time delay of feeding back the HARQ-ACK information of the data channel with the front time in the scheduled data channels, thereby improving the system performance.

With reference to the first aspect and the second aspect, in one possible implementation manner, the first indication information may indicate a number of time domain resources of the HARQ-ACK information by indicating to increase the number of time domain resources carrying the HARQ-ACK information.

Based on the implementation manner, the network device may indicate to the terminal device that the number of time domain resources carrying HARQ-ACK information is increased through the first indication information, and the terminal device may respectively send HARQ-ACK information on the increased time domain resources carrying HARQ-ACK information, compared with at least K after the end of the last scheduled data channel ₁ According to the technical scheme of feeding back the HARQ-ACK information of the N data channels by the time units, the terminal equipment can feed back the received data channels before receiving the last data channel, and the time delay of feeding back the HARQ-ACK information of the data channel with the front time in the scheduled data channels can be reduced. In addition, the signaling overhead of the control information can be saved by indicating the increased number of time domain resources carrying the HARQ-ACK information, and the complexity of blind detection control information is reduced.

With reference to the first aspect and the second aspect, in one possible implementation manner, when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is 1, the terminal device may send 1 HARQ-ACK information, where the 1 HARQ-ACK information is HARQ-ACK information corresponding to N data channels respectively. Accordingly, the network device may receive 1 HARQ-ACK information. Or when the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is M, the terminal equipment sends M pieces of HARQ-ACK information. The M-th HARQ-ACK information in the M HARQ-ACK information is HARQ-ACK information corresponding to the M-th group of data channels in the N data channels. M is an integer greater than 1, M is taken throughout 1 to M. Correspondingly, the network device receives M pieces of HARQ-ACK information.

Based on the implementation manner, the terminal device can send one or more pieces of HARQ-ACK information according to the first indication information sent by the network device, so that the requirements of different scenes can be met. For example, in a scenario with a higher latency requirement, the network device may instruct the terminal device to send M HARQ-ACK information through the first indication information, so that a feedback latency of a PDSCH preceding in the scheduled PDSCH may be reduced.

With reference to the first aspect and the second aspect, in a possible implementation manner, the control information may further include first time domain resource indication information of HARQ-ACK information. When the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is 1, the terminal device may send one piece of HARQ-ACK information on a first time domain resource, where the first time domain resource is indicated by the first time domain resource indication information; accordingly, the network device may receive one HARQ-ACK information on the first time domain resource. Or when the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is M, the terminal device may send M HARQ-ACK information on the second time domain resources corresponding to the mth group of data channels. The time unit interval between the second time domain resource corresponding to the mth group of data channels and the time domain resource occupied by the last data channel in the mth group of data channels in the time domain satisfies the first time domain resource indication information, and correspondingly, the network device can receive M pieces of HARQ-ACK information on the second time domain resource corresponding to the mth group of data channels.

Based on the implementation manner, the network device can indicate the time domain resource of the HARQ-ACK information to the terminal device, and when the terminal device needs to feed back a plurality of HARQ-ACK information, the time domain resource of the HARQ-ACK information can be used to send a plurality of HARQ-ACK information, so that the network device can receive a plurality of HARQ-ACK information at the corresponding time domain resource.

With reference to the first aspect and the second aspect, in one possible implementation manner, the M groups of data channels included in the N data channels may be determined according to a start position of a time domain resource occupied by a first data channel and an end position of a time domain resource occupied by an nth data channel. Alternatively, the M groups of data channels included in the N data channels may be determined according to second time domain resource indication information of the N data channels, and the second time domain resource indication information of the N data channels may be determined by the network device and indicated to the terminal device.

Based on the implementation manner, the terminal device and the network device can divide the N data channels into M groups through the time domain resources occupied by the N data channels, and respectively send the HARQ-ACK information of the M groups of data channels, so that the feedback time delay of the HARQ-ACK information of the data channels in front in the time domain can be reduced.

With reference to the first aspect and the second aspect, in one possible implementation manner, the first indication information may be indicated based on a partial bit sequence of the new data indication (new data indicator, NDI) in the control information or based on a partial bit sequence of the redundancy version (redundancy version, RV) in the control information.

Based on the implementation manner, the first indication information can multiplex part of bit sequences of the NDI and/or RV fields to indicate the first indication information, so that waste of control resources and occupied bandwidth can be reduced.

In a third aspect, a method for transmitting control information is provided, which can be performed by a terminal device or a chip provided on the terminal device side. In the method, the terminal device may receive control information from the network device, the control information being used to schedule the N data channels. Wherein N is an integer greater than 1. The control information may be used to indicate a start value of at least two HARQ process numbers. The terminal device may receive N data channels according to the control information. The N data channels respectively correspond to the HARQ process numbers and comprise the initial values of at least two HARQ process numbers.

In a fourth aspect, a method for transmitting control information is provided, which can be performed by a network device or a chip provided on the network device side. In the method, the network device may send control information to the terminal device, where the control information is used to schedule N data channels. Wherein N is an integer greater than 1. The control information may be used to indicate a start value of at least two HARQ process numbers. The network device may send N data channels according to the control information, where the HARQ process numbers corresponding to the N data channels respectively include start values of at least two HARQ process numbers.

Based on the third and fourth aspects, the network device may indicate at least two start values of HARQ process numbers, and then the network device may transmit the plurality of data channels using at least two sequences of process numbers when receiving the plurality of data channels, thereby reducing the likelihood that when transmitting the plurality of data channels using only the start value of one process number, there is a greater likelihood that there is no available process number for the data channels.

With reference to the third aspect and the fourth aspect, in one possible implementation manner, the control information may include second indication information and third indication information. The second indication information is used for indicating the starting value of the first HARQ process number, and the third indication information is used for indicating the starting values of other HARQ process numbers except the starting value of the first HARQ process number in the starting values of at least two HARQ process numbers.

Based on the above implementation, if the third indication information indicates the start value of one or more HARQ process numbers other than the start value of the first HARQ process number, then at least two or more process number sequences may be used to transmit the plurality of data channels, so that the possibility that when the start value of one process number is used to transmit the plurality of data channels, there is a greater likelihood that there is no available process number for feedback HARQ.

With reference to the third aspect and the fourth aspect, in one possible implementation manner, the third indication information may be indicated based on a partial bit sequence of RV in the control information or based on a partial bit sequence of NDI in the control information.

Based on the implementation manner, the third indication information may be indicated based on a partial bit sequence of NDI in the control information or based on a partial bit sequence of RV in the control information, so that downlink resources occupied by sending the third indication information are reduced.

In a fifth aspect, a method for transmitting control information is provided, which can be performed by a terminal device or a chip provided on the terminal device side. In the method, the terminal device may receive first information on a first time-frequency resource, and the first information may include time-domain resource allocation (time domain resource allocation, TDRA). The TDRA is used to indicate time domain resources of a data channel scheduled by the control information, and the first information is used to indicate first part information of the control information. The terminal device may receive second information on the second time-frequency resource, where the second information is used to indicate second part of information of the control information.

In a sixth aspect, a method for transmitting control information is provided, which can be performed by a network device or a chip provided on the network device side. In the method, the network device may send first information in a first time-frequency resource, where the first information includes a TDRA. The TDRA is used to indicate time domain resources of a data channel scheduled by the control information, and the first information is used to indicate first part information of the control information. The network device may send second information on the second time-frequency resource, where the second information is used to indicate second part of the control information.

Based on the fifth aspect and the sixth aspect, the control information is transmitted on two time-frequency resources in two parts, and since the first information includes the TDRA, the terminal device can determine the actual length of some fields in the second information as long as decoding the TDRA field, so that the blind detection complexity of the second information is not increased even if the length of some fields in the second information is increased.

With reference to the fifth aspect and the sixth aspect, in a possible implementation manner, the first information may further include format information, modulation and coding scheme and HARQ process number of the control information.

Based on the implementation manner, other fields with fixed lengths are carried in the first information, so that the complexity of the terminal equipment in blind detection of the first information is reduced relative to the complexity of blind detection of the second information, and the information of the TDRA field can be rapidly solved.

With reference to the fifth aspect and the sixth aspect, in a possible implementation manner, NDI and RV may be included in the second information.

Based on the implementation manner, since the first information includes the TDRA, the terminal can determine the actual lengths of the NDI and RV in the second information as long as the terminal decodes the TDRA field, so that the blind detection complexity of the second information is not increased even if the lengths of the NDI and RV fields are increased. With reference to the fifth aspect and the sixth aspect, in a possible implementation manner, the first time-frequency resource may be located before the second time-frequency resource in a time domain. Alternatively, the first time-frequency resource may be located temporally after the second time-frequency resource. Alternatively, the second time-frequency resource may include a plurality of third time-frequency resources, and the first time-frequency resource may be located between the plurality of third time-frequency resources in the time domain. Alternatively, the first time-frequency resource may include a plurality of fourth time-frequency resources, and the second time-frequency resource may be located between the plurality of fourth time-frequency resources in the time domain. Alternatively, the first time-frequency resource may include a plurality of fourth time-frequency resources, the second time-frequency resource may include a plurality of third time-frequency resources, and the plurality of third time-frequency resources and the plurality of fourth time-frequency resources may be staggered.

Based on the implementation manner, the control information can be transmitted on two parts of time-frequency resources in a plurality of modes, and the complexity of blind detection control information of the terminal equipment can be reduced.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, where the apparatus may be a terminal device, and may also be a chip in the terminal device. The apparatus has a function of realizing any of the above-described implementation methods of the first aspect, or has a function of realizing any of the above-described implementation methods of the third aspect, or has a function of realizing any of the above-described implementation methods of the fifth aspect. The functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In an eighth aspect, embodiments of the present application provide a communication apparatus, which may be a network device, or may be a chip or a module in the network device. The apparatus has a function of realizing any of the above-described second aspect, or a function of realizing any of the above-described fourth aspect, or a function of realizing any of the above-described sixth aspect. The functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a ninth aspect, embodiments of the present application provide a communication device comprising a processor and a memory; the memory stores computer instructions that, when executed by the apparatus, cause the apparatus to perform any of the implementation methods of the first to sixth aspects described above.

In a tenth aspect, embodiments of the present application provide a communication device comprising means for performing the steps of any of the implementation methods of the first to sixth aspects described above.

In an eleventh aspect, embodiments of the present application provide a communication device, including a processor and an interface circuit, where the processor is configured to communicate with other devices through the interface circuit, and perform any implementation method of the first aspect to the sixth aspect. The processor includes one or more.

In a twelfth aspect, an embodiment of the present application provides a communication device, including a processor coupled to a memory, where the processor is configured to invoke a program stored in the memory to perform any implementation method of the first aspect to the sixth aspect. The memory may be located within the device or may be located external to the device. And the processor may be one or more.

In a thirteenth aspect, embodiments of the present application further provide a computer-readable storage medium having instructions stored therein that, when executed on a communication device, cause any implementation method of the first to sixth aspects described above to be performed.

In a fourteenth aspect, embodiments of the present application also provide a computer program product comprising a computer program or instructions which, when executed by a communication device, cause any one of the implementation methods of the first to sixth aspects described above to be performed.

In a fifteenth aspect, embodiments of the present application further provide a chip system, including: a processor configured to perform any implementation method of the first to sixth aspects.

In a sixteenth aspect, embodiments of the present application further provide a communication system, including: a terminal device for performing any of the implementation methods in the first aspect and a network device for performing any of the implementation methods in the second aspect.

In a seventeenth aspect, embodiments of the present application further provide a communication system, including: a terminal device for performing any of the implementation methods in the third aspect and a network device for performing any of the implementation methods in the fourth aspect.

In a seventeenth aspect, embodiments of the present application further provide a communication system, including: a terminal device for performing any of the implementation methods in the fifth aspect and a network device for performing any of the implementation methods in the sixth aspect.

Description of technical effects that can be achieved by any one of the seventh to seventeenth aspects described above may be made with reference to description of technical effects of corresponding aspects of the first to sixth aspects described above, and a discussion will be omitted.

Drawings

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

fig. 2 is a schematic scheduling diagram of a single PDSCH provided in an embodiment of the present application;

fig. 3 is a schematic scheduling diagram of multiple PDSCH provided in an embodiment of the present application;

fig. 4 is one of exemplary flowcharts of a method for transmitting control information according to an embodiment of the present application;

fig. 5A is a schematic diagram of a continuous PDSCH provided in an embodiment of the present application;

fig. 5B is a schematic diagram of discrete PDSCH provided by an embodiment of the present application;

fig. 6 is a schematic diagram of a PDSCH grouping method according to an embodiment of the present application;

fig. 7 is a schematic diagram of a PDSCH grouping method according to an embodiment of the present application;

fig. 8 is a schematic diagram of a PDSCH grouping method according to an embodiment of the present application;

Fig. 9A is a schematic diagram of a transmission method of HARQ-ACK information according to an embodiment of the present application;

fig. 9B is one schematic diagram of a transmission method of HARQ-ACK information according to an embodiment of the present application;

fig. 10 is one of exemplary flowcharts of a method for transmitting control information according to an embodiment of the present application;

fig. 11 is one of exemplary flowcharts of a method for transmitting control information according to an embodiment of the present application;

fig. 12 is a schematic diagram of a positional relationship between a first time-frequency resource and a second time-frequency resource provided in an embodiment of the present application;

fig. 13 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 15 is a schematic diagram of a transceiver unit according to an embodiment of the present application.

Detailed Description

Fig. 1 is a schematic architecture diagram of a communication system 1000 to which embodiments of the present application apply. As shown in fig. 1, the communication system comprises a radio access network 100 and a core network 200, and optionally the communication system 1000 may further comprise the internet 300. The radio access network 100 may include at least one network device (e.g., 110a and 110b in fig. 1) and may also include at least one terminal device (e.g., 120a-120j in fig. 1). The terminal device is connected with the network equipment in a wireless mode, and the network equipment is connected with the core network in a wireless or wired mode. The core network device and the network device may be separate physical devices, or may integrate the functions of the core network device and the logic functions of the network device on the same physical device, or may integrate the functions of a part of the core network device and the functions of a part of the network device on one physical device. The terminal apparatus and the network device may be connected to each other by a wired or wireless connection. Fig. 1 is only a schematic diagram, and other network devices may be further included in the communication system, for example, a wireless relay device and a wireless backhaul device may also be included, which are not shown in fig. 1.

The network device may also be referred to as a radio access network device, and may be a base station (base station), an evolved NodeB (eNodeB), a transmission and reception point (transmission reception point, TRP), a next generation NodeB (gNB) in a fifth generation (5th generation,5G) mobile communication system, a next generation base station in a sixth generation (6th generation,6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; the present invention may also be a module or unit that performs a function of a base station part, for example, a Central Unit (CU) or a Distributed Unit (DU). The CU can complete the functions of a radio resource control protocol and a packet data convergence layer protocol (packet data convergence protocol, PDCP) of the base station and can also complete the functions of a service data adaptation protocol (service data adaptation protocol, SDAP); the DU performs the functions of the radio link control layer and the medium access control (medium access control, MAC) layer of the base station, and may also perform the functions of a part of the physical layer or the entire physical layer, and for a detailed description of the above protocol layers, reference may be made to the relevant technical specifications of the third generation partnership project (3rd generation partnership project,3GPP). The network device may be a macro base station (e.g., 110a in fig. 1), a micro base station or an indoor station (e.g., 110b in fig. 1), a relay node or a donor node, etc. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device. For convenience of description, a base station is described below as an example of a network device.

The terminal device may also be referred to as, user Equipment (UE), mobile station, mobile terminal, etc. The terminal device may be widely applied to various scenes, for example, device-to-device (D2D), vehicle-to-device (vehicle to everything, V2X) communication, machine-type communication (MTC), internet of things (internet of things, IOT), virtual reality, augmented reality, industrial control, autopilot, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, and the like. The terminal device can be a mobile phone, a tablet personal computer, a computer with a wireless receiving and transmitting function, a wearable device, a vehicle, an unmanned aerial vehicle, a helicopter, an airplane, a ship, a robot, a mechanical arm, intelligent household equipment and the like. The embodiment of the present application does not limit the specific technology and the specific device configuration adopted by the terminal device. For convenience of description, a terminal will be described below as an example of a terminal device.

The base station and the terminal may be fixed in position or movable. Base stations and terminals may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The application scenes of the base station and the terminal are not limited in the embodiment of the application.

The roles of base station and terminal may be relative, e.g., helicopter or drone 120i in fig. 1 may be configured as a mobile base station, terminal 120i being the base station for those terminals 120j that access radio access network 100 through 120 i; but for base station 110a 120i is a terminal, i.e., communication between 110a and 120i is via a wireless air interface protocol. Of course, communication between 110a and 120i may be performed via an interface protocol between base stations, and in this case, 120i is also a base station with respect to 110 a. Thus, both the base station and the terminal may be collectively referred to as a communication device, 110a and 110b in fig. 1 may be referred to as a communication device having base station functionality, and 120a-120j in fig. 1 may be referred to as a communication device having terminal functionality.

Communication can be carried out between the base station and the terminal, between the base station and between the terminal and the terminal through the authorized spectrum, communication can be carried out through the unlicensed spectrum, and communication can also be carried out through the authorized spectrum and the unlicensed spectrum at the same time; communication can be performed through a frequency spectrum of 6 gigahertz (GHz) or less, communication can be performed through a frequency spectrum of 6GHz or more, and communication can be performed using a frequency spectrum of 6GHz or less and a frequency spectrum of 6GHz or more simultaneously. The embodiments of the present application do not limit the spectrum resources used for wireless communications.

In the embodiments of the present application, the functions of the base station may be performed by a module (such as a chip) in the base station, or may be performed by a control subsystem including the functions of the base station. The control subsystem comprising the base station function can be a control center in the application scenarios of smart power grids, industrial control, intelligent transportation, smart cities and the like. The functions of the terminal may be performed by a module (e.g., a chip or a modem) in the terminal, or by a device including the functions of the terminal.

In the application, a base station sends a downlink signal or downlink information to a terminal, and the downlink information is borne on a downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on an uplink channel. In order for a terminal to communicate with a base station, it is necessary to establish a radio connection with a cell controlled by the base station. The cell with which the terminal has established a radio connection is called the serving cell of the terminal. The terminal may also be interfered by signals from neighboring cells when communicating with the serving cell.

In the embodiments of the present application, the time domain symbols may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols or discrete fourier transform spread OFDM (Discrete Fourier Transform-spread-OFDM, DFT-s-OFDM) symbols. Symbols in embodiments of the present application all refer to time domain symbols, unless otherwise specified.

It should be understood that in the embodiments of the present application, the physical downlink shared channel (physical downlink shared channel, PDSCH), the physical downlink control channel (physical downlink control channel, PDCCH), the physical uplink control channel (physical uplink control channel, PUCCH) and the PUSCH are just examples of downlink data channels, downlink control channels, uplink control channels, and uplink data channels, and the data channels and the control channels may have different names in different systems and different scenarios, and the embodiments of the present application are not limited thereto. In this application, signals may include data channels, control channels, and reference signals. The signal transmission may be uplink transmission, i.e. the terminal sends to the base station; or may be downlink, i.e., base station to terminal. When the transmission is a verb, the transmission can be interchanged with transmission/reception.

In order to facilitate understanding of the technical solutions provided by the embodiments of the present application, technical terms related to the embodiments of the present application are explained and illustrated below.

1) HARQ-ACK information, including Acknowledgement (ACK) and negative acknowledgement (negative acknowledgement, NACK), may be denoted by ACK and NACK, respectively.

2) In this application, a time unit may be a slot, symbol, minislot, frame, subframe, or field.

It should be understood that the xth PDSCH in the embodiment of the present application may be understood as the PDSCH located at the xth in order from the smaller time domain to the larger time domain. The last PDSCH is similarly understood to be the last PDSCH in the order of the time domain from smaller to larger.

It should be noted that, the starting position of the time domain resource in the embodiment of the present application may be referred to as a starting position of the time domain resource, which may be understood as a starting time unit of the time domain resource, such as a starting time slot or a starting symbol. For example, one time domain resource includes slot 0, slot 1, and slot 2, and then the starting position of the time domain resource may be slot 0. Similarly, the end position of a time domain resource in the embodiment of the present application may be understood as an end time unit of a time domain resource, such as an end slot or an end symbol.

The following describes the technical solution provided in the embodiments of the present application with reference to the accompanying drawings.

In recent years, with the growth of wireless communication network applications, it has been difficult to satisfy the demands in the communication band below 6 gigahertz (GHz). High frequencies (e.g., millimeter wave bands) are an important component of the spectrum of a new generation of wireless communication systems by virtue of their large bandwidth. The new radio, NR, standard has extended the supported frequency band to 52.6GHz to 71GHz.

For the 52.6GHz to 71GHz band, the third generation partnership project (3 ^rd generation partnership project,3 GPP) technical specification group (techni)cal specification group, TSG) a set of radio access network operations (radio access network working group, RAN 1) defines new subcarrier spacing (SCS) values at the 104 th conference, including 480KHz and 960KHz. A larger SCS value means a shorter length per slot. SCS value and training length T supported at present _slot The relationship of (2) is shown in Table 1.

Table 1: SCS and time slot length T _slot Relation of (2)

Wherein the SCS is provided in kilohertz (KHz),

the number of slots in each frame is indicated, and the slot length Tslot is in milliseconds (ms).

In the existing NR protocol, scheduling of PDSCH resources is indicated by RRC and DCI signaling. Referring to fig. 2, the following steps may be included.

Step (1): the base station configures a TDRA table through a PDSCH time domain resource allocation table (PDSCH-timedomainresource allocation list) field in RRC signaling cell PDSCH configuration (PDSCH-Config). Each row in the TDRA table contains only the start value and the length indication value (start and length indicator value, SLIV) of the time domain resource. In FIG. 2, t _i-1 I=0, …, M, indicates SLIV of the i-th row, where the value of M is 16 in the case of single PDSCH scheduling (i.e., one DCI can schedule only one PDSCH).

Step (2): the base station transmits DCI information indicating SLIV (i.e., t) of the mth row in the TDRA table through PDCCH _m-1 ) Generates time domain resources of PDSCH scheduled to the terminal.

Step (3): base station and terminal use t _m-1 And carrying out data transmission on the PDSCH corresponding to the time domain resource.

It should be appreciated that the present application focuses on allocation of time domain resources, and thus frequency domain resource allocation (frequency domain resource allocation, FDRA) and other information are not specifically described.

It can be seen that each row in the TDRA table contains only one SLIV, so one DCI can only schedule a single PDSCH. Then, based on the above procedure, if multiple PDSCH is to be scheduled, multiple DCI needs to be configured on multiple time units. Because the terminal decodes the DCI and needs to carry out blind detection, the processing complexity is higher and the energy consumption is larger. When the SCS is larger, the length of one time unit is shorter, if each time unit needs to perform a blind test, besides the large energy consumption of the terminal, the DCI demodulation time may be longer than the PDSCH transmission time or the duration of one time unit, which results in the situation that the current DCI is not solved before the PDSCH is received or before the next DCI is received, further results in the accumulation of data to be demodulated (including PDSCH and DCI), and when the data amount to be demodulated exceeds the buffer capacity, data loss occurs, resulting in transmission failure.

In view of the above-mentioned problem, RAN1 performs corresponding enhancement on PDSCH in 105 th conference, that is, supports single DCI scheduling of multiple PDSCH, abbreviated as multiple PDSCH (multi-PDSCH) scheduling. Referring to fig. 3, the following steps may be included.

Step (1): the base station configures a TDRA table through a PDSCH time domain resource allocation table field in RRC signaling cell PDSCH configuration. Each row in the TDRA table contains one or more SLIV time domain resources, up to 8 SLIVs per row. In FIG. 3, t _i-1,j-1 The j-th SLIV of the i-th row, where j=1, …, n _i And n is _i ＝1,2,…,8。

Step (2): the base station sends DCI information through PDCCH to indicate that the number of PDSCH scheduled by UE is n _m And the time domain resource of each scheduled PDSCH is n contained in the m-th row respectively _m Individual SLIV (i.e

) Corresponding time domain resources.

Step (3): base station and terminal use t _m-1,0 The corresponding PDSCH (abbreviated PDSCH 0) performs data transmission.

Step (4): base station and terminal use t _m-1,1 The corresponding PDSCH (PDSCH 1 for short)And transmitting row data.

And so on, until the last PDSCH (i.e

The corresponding PDSCH, abbreviated PDSCH (n _m -1)) is completed.

Based on the scheme shown in fig. 3, scheduling one or more PDSCH through one DCI is achieved, thereby reducing DCI overhead. However, the existing multi-PDSCH scheduling mechanism has the problem of larger feedback delay of HARQ-ACK information. The following description is made.

In the related art, the requirement of not less than n+K is satisfied between the time of receiving PDSCH from the terminal and the time of feeding back HARQ-ACK information to the base station from the terminal ₁ Is a timing relationship of (a). Where n represents the end position of the time domain resource occupied by the scheduled PDSCH, K ₁ Represents the minimum number of slots that differ from the end position of the time domain resources occupied by the scheduled PDSCH to the start position of the time domain resources occupied by the HARQ-ACK information. In a multi-PDSCH scheduling scenario, when a terminal feeds back HARQ-ACK information, the terminal needs to pass through at least K at the end positions of all time domain resources occupied by PDSCH scheduled by a single DCI ₁ After a time unit, feedback of HARQ-ACK information can be performed. That is, n represents a position where the time domain resource occupied by the last PDSCH received ends. Thus, the HARQ-ACK feedback delay may be greater for a PDSCH scheduled first in the time domain, e.g., the first PDSCH scheduled.

In view of this, an embodiment of the present application provides a method for transmitting control information. In the method, the base station can indicate the number of time domain resources carrying the HARQ-ACK information to the terminal, so that the terminal can feed back the HARQ-ACK information to the scheduled PDSCH by using a plurality of time domain resources. At least K after the end of the last PDSCH scheduled in comparison with the related art ₁ The technical scheme of HARQ-ACK information feedback is carried out on a plurality of scheduled PDSCHs by a plurality of time units, so that the time delay of the PDSCHs can be reduced.

Referring to fig. 4, an exemplary flowchart of a method for transmitting control information according to an embodiment of the present application may include the following operations.

S401: the base station transmits control information to the terminal.

Accordingly, the terminal receives control information from the base station.

The base station may send control information to the terminal through a control channel, such as PDCCH. The control information here may be DCI. The control information may be used to schedule N PDSCH, N being an integer greater than 1. For example, the control information may schedule 2, 3, or 4 or more PDSCHs.

It should be understood that the N PDSCHs of the control information schedule may be consecutive in the time domain, or the N PDSCHs of the control information schedule may be discrete in the time domain.

Referring to fig. 5A, a base station may schedule a plurality of PDSCHs, e.g., four PDSCHs, through DCI. As shown in fig. 5A, the plurality of PDSCH are consecutive in the time domain. Alternatively, the next symbol of the plurality of PDSCHs where the first PDSCH ends is the starting symbol of the second PDSCH. Wherein the first PDSCH and the second PDSCH are any two PDSCH adjacent in time domain among the plurality of PDSCH.

Referring to fig. 5B, a base station may schedule a plurality of PDSCH through DCI. As shown in fig. 5B, the plurality of PDSCH are discrete in the time domain. As can be seen from fig. 5B, there is a time domain interval between the end position of the time domain resource occupied by PDSCH1 and the start position of the time domain resource occupied by PDSCH 2. Similarly, there is a time domain interval between the end position of the time domain resource occupied by PDSCH2 and the start position of the time domain resource occupied by PDSCH 3. The end position of the time domain resource occupied by the PDSCH3 is the start position of the time domain resource occupied by the PDSCH 4. It can be seen that if there is a time domain interval between the end position of the time domain resource occupied by the first PDSCH and the start position of the time domain resource occupied by the second PDSCH among the plurality of PDSCHs scheduled by the DCI, the two PDSCHs may be considered to be discrete. Wherein the first PDSCH and the second PDSCH are any two PDSCH adjacent in time domain among the plurality of PDSCH.

It should be appreciated that the time domain interval described above may be the number of time units of the interval. For example, the number of time units may be the number of symbols or the number of slots.

In this embodiment of the present application, PDSCH scheduled by one DCI may be continuous in time domain as shown in fig. 5A, or may be discrete in time domain as shown in fig. 5B, which is not described in detail below.

In one possible implementation manner, the control information may include first indication information. The first indication information may be used to indicate the number of time domain resources carrying HARQ-ACK information. It should be appreciated that one time domain resource carrying HARQ-ACK information may carry HARQ-ACK information for one or more PDSCH.

S402: and the terminal sends the HARQ-ACK information corresponding to the N PDSCH according to the number of time domain resources carrying the HARQ-ACK information.

Correspondingly, the base station receives the HARQ-ACK information corresponding to the N PDSCH according to the number of time domain resources carrying the HARQ-ACK information.

It should be appreciated that the number of time domain resources actually used for the terminal to transmit the HARQ-ACK information may correspond to the number of time domain resources carrying the HARQ-ACK information indicated by the first indication information. For example, the number of time domain resources carrying HARQ-ACK information indicated by the first indication information is two, so that the number of time domain resources actually used for the terminal to send HARQ-ACK information is also two, and each time domain resource feeds back HARQ-ACK information corresponding to a plurality of PDCSH.

Alternatively, the number of time domain resources indicated by the first indication information and carrying HARQ-ACK information may be greater than 1, such as 2, 3, or 4. It should be noted that, the number of time domain resources carrying HARQ-ACK information indicated by the first indication information is generally not greater than N, that is, the number of time domain resources carrying HARQ-ACK information is generally less than or equal to the number of PDSCH scheduled by DCI.

In the technical solution shown in fig. 4, the base station may indicate, to the terminal, the number of time domain resources carrying HARQ-ACK information through the first indication information, and the terminal may feed back, according to the indication of the base station, the HARQ-ACK information of the N PDSCH scheduled by DCI. Compared with the related art, after receiving N PDSCHs, the terminal receives at least K after the end of the last PDSCH of the schedule ₁ The HARQ-ACK information feedback is carried out on N PDSCHs by a plurality of time units, so that the time delay of the HARQ-ACK information feedback of the PDSCH with the front time in the scheduled plurality of PDSCHs can be reduced, therebyTo improve system performance.

In one possible implementation, the first indication information included in the control information in S401 may implement indicating the number of time domain resources carrying HARQ-ACK information by indicating the increased number of time domain resources carrying HARQ-ACK information. In the embodiment of the present application, the increased number of time domain resources carrying HARQ-ACK information may be understood as the number of time domain resources carrying HARQ-ACK information that is increased on the basis of 1 time domain resource carrying HARQ-ACK information. For example, the first indication information may indicate that i time domain resources carrying HARQ-ACK information are added, and then the terminal may transmit HARQ-ACK information on i+1 time domain resources.

In a possible case, if the first indication information included in the control information in S401 indicates that the number of time domain resources carrying HARQ-ACK information is 1, or the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is 0, the terminal may transmit HARQ-ACK information including HARQ-ACK information of the N PDSCH being scheduled on one time domain resource. If the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is m+1, or the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is M, the terminal may send the HARQ-ACK information on m+1 time domain resources. The M-th time domain resource of the M time domain resources is used for transmitting HARQ-ACK information corresponding to the M-th group PDSCH of the N PDSCHs. M is an integer greater than 0, and M is taken throughout 0 to M.

Hereinafter, a method for grouping N PDSCHs by a terminal will be described, and methods 1 to 3 may be included.

Method 1: grouping is carried out according to the end positions of the time domain resources occupied by the N PDSCHs.

For example, the terminal may divide the plurality of PDSCHs into M groups according to a resource start position of a PDSCH that is located first in the time domain among the N PDSCHs and an end position of a time domain resource occupied by a PDSCH that is located last in the time domain among the N PDSCHs.

Optionally, during grouping, the terminal may determine M-1 equally dividing points according to a starting position of a time domain resource occupied by a PDSCH located in a first one of the N PDSCHs in a time domain and an ending position of a time domain resource occupied by a PDSCH located in a last one of the N PDSCHs in the time domain. For example, when M is from 2 to M-1, the terminal may divide the end position of the time domain resource in the N PDSCH before the mth aliquoting point and the PDSCH after the mth-1 aliquoting point into the mth group. For example, if the terminal needs to divide the N PDSCH into 4 groups, the terminal may determine 3 equally dividing points according to the starting position of the time domain resource occupied by the first PDSCH and the ending position of the time domain resource occupied by the last PDSCH. The terminal may divide PDSCH of the end position of the occupied time domain resource before the 1 st bisection point into a first group, divide PDSCH of the end position of the occupied time domain resource after the 1 st bisection point and before the 2 nd bisection point into a second group, divide PDSCH of the end position of the occupied time domain resource after the 2 nd bisection point and before the 3 rd bisection point into the 3 rd group, and divide PDSCH of the end position of the occupied time domain resource after the 3 rd bisection point into the 4 th group.

Referring to fig. 6, a schematic diagram of transmission of HARQ-ACK information provided in an embodiment of the present application is shown. Assume that the control information is used to schedule three PDSCH in S401, such as the three PDSCH shown in fig. 6. Assuming that the first indication information included in the control information in S401 indicates that the number of time domain resources carrying HARQ-ACK information is 2, the time slot in the control information indicating the interval between the start position of the time domain resources carrying HARQ-ACK information and the end position of the corresponding time domain resources occupied by PDSCH is K ₁ . The terminal may determine an equal division point according to a starting position of a time domain resource occupied by a PDSCH located first in a time domain among the plurality of PDSCH, as shown in fig. 6, and an ending position of a time domain resource occupied by a PDSCH located last in a time domain among the plurality of PDSCH, as shown in fig. 6. For example, the isocratic may be

Or->

The terminal may use PDSCH with the end position of the time domain resource among the three PDSCH before the equal division point, such as PDSCH1 shown in fig. 6, as the first group PDSCH. The terminal may divide PDSCH whose end position of time domain resource among three PDSCH is after the equal division point, PDSCH2 and PDSCH3 as shown in fig. 6, into the second group PDSCH.

The terminal may transmit HARQ-ACK information on two time domain resources with reference to S402 implementation. The HARQ-ACK information of PDSCH1 is transmitted on time domain resource 1, and the HARQ-ACK information of PDSCH2 and PDSCH3 is transmitted on time slot resource 2.

Based on the above scheme, the terminal can divide the N PDSCH into M groups according to the starting position of the time domain resource occupied by the first PDSCH and the ending position of the time domain resource occupied by the last PDSCH, and respectively transmit the HARQ-ACK information of the M groups of PDSCH, compared with at least K after the last data channel is scheduled to end ₁ According to the technical scheme of feeding back the HARQ-ACK information of the N data channels by the time units, the terminal can feed back the received PDSCH before receiving the last PDSCH, and the feedback time delay of the HARQ-ACK information of the front PDSCH can be reduced.

Method 2: the grouping is performed in the order of the N PDSCH in the time domain.

For example, the terminal may divide the N PDSCH into M groups according to the order of the N PDSCH in the time domain. For example, the terminal may equally divide the N PDSCH into M groups. For example, the first PDSCH to the N/M PDSCH are the first group, the (N/M) +1 PDSCH to the 2*N/M PDSCH are the second group in time domain order, and so on. It should be appreciated that where N/M is not an integer, N/M may be rounded up, N/M may be rounded down, N/M may be rounded up, or an integer value of N/M may be determined in other predefined ways. For example, when N/m=1.7, if N/M is rounded up, i.e., the first PDSCH and the second PDSCH are the first group, and if N/M is rounded down, i.e., the first PDSCH is the first group.

Referring to fig. 7, discrete PDSCH is taken as an example. Assume that the control information in S401 is used to schedule five PDSCH, and the time domain resources occupied by these five PDSCH are shown in fig. 7. The first indication information included in the control information indicates that the number of time domain resources carrying HARQ-ACK information is 3, or the first indication information indicates that the number of time domain resources carrying HARQ-ACK information added is 2, that is, the terminal needs to send HARQ-ACK information on 3 time domain resources. The terminal may divide the five PDSCH into three groups in the order of the five PDSCH in the time domain. Wherein, the terminal may divide the first PDSCH to the 5/3 th PDSCH into the first group. Since 5/3 is not an integer, it is assumed that the terminal pair 5/3 is rounded down, i.e. equal to 1. In other words, the terminal divides the first PDSCH, such as PDSCH1 shown in fig. 7, into the first group. The terminal may divide the second PDSCH to the 2 (5/3) th PDSCH into the second group. Similarly, the terminal pairs 5/3 are rounded down, i.e., the terminal groups the second PDSCH and the third PDSCH, PDSCH2 and PDSCH3 as shown in fig. 7, into a second group. Then the fourth PDSCH and the fifth PDSCH, PDSCH4 and PDSCH5 as shown in fig. 7, are the third group.

The terminal may transmit HARQ-ACK information on three time domain resources with reference to S402 implementation. The terminal may send HARQ-ACK information of PDSCH1 on time domain resource 1, HARQ-ACK information of PDSCH2 and PDSCH3 on time domain resource 2, and HARQ-ACK information of PDSCH4 and PDSCH5 on time domain resource 3.

Based on the scheme, the N PDSCHs are divided into M groups according to the sequence of the N PDSCHs in the time domain, and the HARQ-ACK information of the PDSCHs in the M groups is respectively sent, so that the feedback time delay of the HARQ-ACK information of the PDSCHs in the front in the time domain can be improved.

Method 3: grouping according to the second time domain resource indication information of the N PDSCHs.

For example, the terminal may divide the N PDSCH into M groups according to the second time domain resource indication information of the N PDSCH.

For example, the base station instructs the terminal to activate the SLIV of the mth row in the TDRA table, where n is included _m And SLIV. The base station is assumed to indicate that the number of HARQ-ACKs is 2, that is, the terminal may divide the N PDSCH into two groups. The terminal can select the 1 st to n th in SLIV of the mth row _m The PDSCH corresponding to/2 SLIVs is divided into a first group, and the PDSCH corresponding to the remaining SLIVs is divided into a second group. Likewise, theAt n _m When/2 is not an integer, the method can be used for n _m 2 rounding up, rounding down, or otherwise determining n in a predefined manner _m A value of/2.

Referring to fig. 8, discrete PDSCH is taken as an example. The control information in S401 instructs the terminal to activate the SLIVs of the mth row in the TDRA table, including three SLIVs. That is, the control information in S401 is used to schedule three PDSCH whose time domain resources may be indicated by the above-described SLIV. It is assumed that the first indication information included in the control information indicates that the time domain resource carrying HARQ-ACK information is 2, or the first indication information indicates that the added time domain resource carrying HARQ-ACK information is 1, that is, the terminal needs to send 2 HARQ-ACK information. At this time, the terminal may divide PDSCH corresponding to the first to 3/2 rd SLIVs, i.e., PDSCH1 and PDSCH2 shown in fig. 8, among the three SLIVs into a first group and PDSCH corresponding to the remaining SLIVs (third SLIV), i.e., PDSCH3 shown in fig. 8 into a second group.

The terminal may transmit HARQ-ACK information on two time domain resources with reference to S402 implementation. Wherein, the HARQ-ACK information of PDSCH1 and PDSCH2 is sent on time domain resource 1, and the HARQ-ACK information of PDSCH3 is sent on time domain resource 2.

Based on the scheme, the N PDSCHs are divided into M groups according to SLIV of the N PDSCHs in the time domain, and the HARQ-ACK information of the PDSCHs of the M groups is respectively sent, so that the feedback time delay of the HARQ-ACK information of the PDSCHs in the front in the time domain can be improved.

Optionally, the control information in S401 may include first time domain resource indication information carrying HARQ-ACK information. For example, the control information includes time slot interval indication information between the starting position of the time domain resource carrying the HARQ-ACK information and the ending position of the time domain resource occupied by the corresponding PDSCH, e.g. the time slot indicating the interval between the ending position of the time domain resource occupied by the last PDSCH in the N PDSCHs scheduled by a single DCI and the starting position of the time domain resource carrying the HARQ-ACK information is K by the "HARQ feedback time indication (PDSCH-to-HARQ-feedback timing indicator)" field ₁ . The terminal can be according to K ₁ The value transmits HARQ-ACK information of the N PDSCHs scheduled.

Hereinafter, first time domain resource indication information of HARQ-ACK information is described by way of 3 examples.

Example 1:

when the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is equal to 1, or indicates that the number of the added HARQ-ACK information is equal to 0, the terminal sends the HARQ-ACK information corresponding to the N scheduled PDSCH on one time domain resource. The time domain resource depends on the time slot interval indication information, that is, indicates the number of time slots of the N scheduled PDSCHs, which are located in the time domain between the end position of the time domain resource occupied by the last PDSCH and the start position of the time domain resource carrying the HARQ-ACK feedback.

Referring to fig. 9A, a schematic diagram of transmission of HARQ-ACK information provided in an embodiment of the present application is shown. Assume that the control information in S401 is used to schedule three PDSCH. Assuming that the first indication information included in the control information indicates that the number of time domain resources carrying HARQ-ACK information is 1, the interval between the end position of the time domain resources occupied by the last PDSCH and the start position of the time domain resources carrying HARQ-ACK information in the time domain in the N scheduled PDSCHs indicated in the control information is K ₁ . The terminal may end K at the last PDSCH resource ₁ One HARQ-ACK message is transmitted on the first time unit after the one time unit. The one HARQ-ACK information includes HARQ-ACK information of the three PDSCHs.

Example 2:

when the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is greater than 1, or indicates that the number of time domain resources carrying the HARQ-ACK information is greater than or equal to 1, that is, when the terminal needs to send the HARQ-ACK information on two or more time domain resources, the two or more time domain resources carrying the HARQ-ACK information may be determined according to the same first time domain resource indication information carrying the HARQ-ACK information. For example, the two or more time domain resources carrying HARQ-ACK information correspond to K ₁ All the same. And n of each HARQ-ACK information is not the same,that is, the end positions of the time domain resources occupied by the PDSCH corresponding to each time domain resource carrying HARQ-ACK information are different.

For example, referring to fig. 9B, assume that the control information in S401 is used to schedule three PDSCH. Assuming that the first indication information included in the control information in S401 indicates that the number of time domain resources carrying HARQ-ACK information is 2, the number of slots in the control information indicating the interval between the start position of the time domain resources carrying HARQ-ACK information and the end position of the corresponding time domain resources occupied by PDSCH is K ₁ . The terminal may divide the three PDSCH into two sets of PDSCH so as to be separated from the end position of the time domain resource occupied by the first set of PDSCH by a distance K ₁ The HARQ-ACK information for the first group of PDSCH is transmitted on a first time unit after the first time unit. And at an end position distance K from the time domain resource occupied by the last PDSCH ₁ The HARQ-ACK information for the second group of PDSCH is transmitted on the first time unit after the first time unit.

Example 3:

as shown in example 2, when the terminal needs to transmit HARQ-ACK information on two or more time domain resources, the two or more time domain resources may use different first time domain resource indication information carrying HARQ-ACK information. For example, the two or more time domain resources carrying HARQ-ACK information K ₁ Not all the same. And n of each time domain resource carrying HARQ-ACK information is also different, namely the end positions of the time domain resources occupied by the PDSCH corresponding to the HARQ-ACK information carried by each time domain resource are different.

K is the same as ₁ Not all the same can be understood as that in the two or more time domain resources carrying HARQ-ACK information, at least K of two time domain resources exist ₁ Are not identical.

Optionally, the control information in S401 may include a plurality of first time domain resource indication information to respectively indicate the two or more time domain resources carrying HARQ-ACK information. For example, the control information may include K ₁ A set indication field. The K is ₁ The set indication field may be already in the multiplexing control informationThere are fields such as a "HARQ feedback time indication of PDSCH (PDSCH-to-harq_ feedback timing indicator)" field. Or K ₁ The set indication field may also be a newly added field.

It should be appreciated that K ₁ K contained in the collection ₁ The number of the time domain resources indicated by the first indication information to bear the HARQ-ACK information is the same or different from the number of the time domain resources indicated by the first indication information to bear the HARQ-ACK information. At K ₁ K contained in the collection ₁ When the number of the time domain resources carrying the HARQ-ACK information indicated by the first indication information is the same as the number of the time domain resources carrying the HARQ-ACK information indicated by the first indication information, the K of each time domain resource carrying the HARQ-ACK information indicated by the first indication information can be considered ₁ All are different. At K ₁ K contained in the collection ₁ When the number of the time domain resources carrying the HARQ-ACK information indicated by the first indication information is larger than the number of the time domain resources carrying the HARQ-ACK information indicated by the first indication information, the K of each time domain resource carrying the HARQ-ACK information indicated by the first indication information can be considered ₁ All are different. At K ₁ K contained in the collection ₁ When the number of the time domain resources carrying the HARQ-ACK information indicated by the first indication information is smaller than the number of the time domain resources carrying the HARQ-ACK information indicated by the first indication information, the number of the time domain resources carrying the HARQ-ACK information can be considered to be K of at least two time domain resources carrying the HARQ-ACK information in the HARQ-ACK information indicated by the first indication information ₁ Will be the same.

For example, the base station may configure the terminal with a plurality of K through RRC signaling ₁ And (5) collecting. For example, the base station may configure the terminal with multiple K's through RRC reconfiguration (RRC reconfiguration) signaling or RRC setup complete (RRC set up complete) signaling ₁ And (5) collecting. Wherein each K is ₁ One or more K may be included in the collection ₁ . Each K ₁ The collection may have an index. The base station may indicate K through the control information in S401 ₁ Index of set, implementing indication K ₁ And (5) collecting.

Specifically, suppose that the base station indicates K through the control information in S401 ₁ The set contains 2K ₁ Respectively X ₁ And X ₂ . The control information in the base station scheduling S401 is used for scheduling three PDSCHs, and the first indication information included in the control information indicates that the number of time domain resources carrying HARQ-ACK information is 2, that is, the terminal needs to perform two scheduling operations And transmitting the HARQ-ACK information on the time domain resource. Then the terminal can divide the three PDSCHs into two groups and locate at the end position distance X of the time domain resource occupied by the last PDSCH in the time domain ₁ The HARQ-ACK information for the first group of PDSCH is transmitted on a first time unit after the first time unit. The terminal can be located at the end position distance X from the time domain resource occupied by the last PDSCH in the time domain ₂ And transmitting HARQ-ACK information corresponding to the second group of PDSCH on the first time unit after the first time unit.

It should be understood that the base station may also divide the N PDSCH into M groups according to the methods shown in the above methods 1 to 3, determine the time domain resources occupied by the HARQ-ACK information corresponding to each group of PDSCH according to the methods shown in the above examples 1 to 3, and receive the HARQ-ACK information on the corresponding time domain resources.

It should be noted that, in order to reduce the overhead of the control information, the first indication information may be indicated by a partial bit sequence in the NDI field and/or the RV field in the DCI. For example, the first indication information may be indicated by an unused bit sequence in the NDI field and/or RV field. Specifically, as introduced above, assuming that the base station DCI indicates the mth row SLIV in the active TDRA table, the mth row SLIV may contain n _m The following SLIV:

when n is _m When=1, the DCI only carries NDI and RV information corresponding to the SLIV, where the NDI field occupies 1 bit, and the RV field occupies 2 bits, which is 3 bits in total.

When n is _m >1, then the DCI follows the maximum SLIV number contained in the entire TDRA form single row (called maxn _i ) To allocate the number of bits of the NDI and RV fields, and each SLIV corresponds to 1 bit NDI and 1 bit RV, n in total _i Bits.

It can be seen that when n _m When=2, …,7, there is 2 (maxn in NDI and RV fields _i -n _m ) Bits are not used. Obviously, DCI occupies a tight PDCCH resource, and unnecessary DCI overhead may cause a decrease in spectral efficiency. Therefore, the system performance can be improved by indicating additional indication information through unused bits in the NDI and/or RV fields in the DCI, or without increasing the blind detection complexityAnd the cost of DCI is reduced.

For example, assuming that the first indication information is indicated by 1 bit of the NDI field and the RV field, a bit of 0 may indicate that the time domain resources carrying HARQ-ACK information are not increased, or a bit of 0 may indicate that the number of time domain resources carrying HARQ-ACK information is increased is 0, it may also be understood that a bit of 0 may indicate that the number of time domain resources carrying HARQ-ACK information is 1, that is, the terminal may transmit HARQ-ACK information on 1 time domain resource, and the 1 HARQ-ACK information is the HARQ-ACK information of N PDSCH scheduled by the base station. A bit of 1 may indicate that 1 time domain resource carrying HARQ-ACK information is added, and it may also be understood that a bit of 1 may indicate that the number of time domain resources carrying HARQ-ACK information is 2, that is, the terminal may send HARQ-ACK information on 2 time domain resources, where the HARQ-ACK information carried by the 2 time domain resources is HARQ-ACK information of N PDSCH scheduled by the base station. In this case, the terminal may divide the N PDSCH into 2 groups, and the grouping method may be implemented with reference to the above-described

methods

1 and 2.

It should be understood that the first indication information may also be indicated by 2 bits, 3 bits or even more bits in the NDI field and/or RV field. For example, the first indication information may be indicated with 2 bits, then a bit of 00 may indicate that no HARQ-ACK information is added, 01 indicates that 1 HARQ-ACK information is added, and so on. Of course, the terminal may group N PDSCH with reference to methods 1 to 3, and will not be described here.

Based on the above scheme, the first indication information may multiplex part of bit sequences of the NDI and/or RV fields, which may reduce the waste of DCI resources.

In addition, in a multi-PDSCH scenario, one corresponding HARQ process number is required for each PDSCH scheduled. Currently, all HARQ process numbers include {0,1, …,15}. The method for selecting the HARQ process number of the multiple PDSCH in the related art is that a base station selects a plurality of continuous process number sequences of the scheduled PDSCH in an unoccupied process number set. It should be appreciated that process number 15 is later restarted from process number 0, so { …,15,0, … } also counts for consecutive process numbers. When a plurality of process number combinations meet the requirement, the starting index is selected to be smaller. The base station indicates the start value of the process number through the HARQ process number (HARQ process number) field of length 4 bits in the DCI. For example, assume that the current unoccupied set of process numbers is {0,1,7,8, 12, 15}:

If the number of PDSCH scheduled is 1, the alternative process numbers are {0}, {1}, {7}, {8}, {12} and {15}, and thus the smallest index {0} is selected, and the indicated start value is 0. If the number of PDSCH scheduled is 2, the alternative sequence of process numbers is {0,1}, {7,8} and {15,0}, and thus the smallest index {0,1}, among them, is selected, indicating a start value of 0. If the number of PDSCH scheduled is 3, the alternative sequence of process numbers is {15,0,1}, thus the index {15,0,1} is chosen with an indicated start value of 15. If the number of scheduled PDSCH is 4, there is no consecutive sequence of process numbers available. Thus, the scheduling of multiple PDSCH may present a problem of no sequence of available process numbers.

In order to solve the above technical problem, the present application proposes that the base station may indicate to the terminal the start values of at least two HARQ process numbers. For example, the base station may indicate the starting value of the plurality of HARQ process numbers to the terminal, and then the base station may transmit the plurality of PDSCH using a shorter consecutive process number of the current HARQ process numbers, so that the possibility that the data channel is more and there is no available process number when the plurality of PDSCH is transmitted using only the starting value of one process number may be reduced.

Specifically, referring to fig. 10, an exemplary flowchart of a method for transmitting control information according to an embodiment of the present application may include the following operations.

S1001: the base station transmits control information to the terminal.

Accordingly, the terminal receives control information from the base station.

The base station may send control information to the terminal through a control channel, such as PDCCH. The control information here may be DCI. The control information may be used to schedule N PDSCH, N being an integer greater than 1. The related description may refer to the aforementioned S401, and will not be repeated here.

In one possible implementation, the control information may be used to indicate a start value of at least two HARQ process numbers. For example, assume that the currently unoccupied set of process numbers is {0,1,7,8, 12, 15}, since there is no sequence of available HARQ process numbers according to the current selection scheme of HARQ process numbers. Therefore, according to the technical solution provided in this embodiment, the control information may indicate the start values of two HARQ process numbers, where the start values of the two HARQ process numbers are 0 and 7, respectively.

In a possible case, the control information may include second indication information and third indication information. Wherein the second indication information may be used to indicate a start value of the first HARQ process number. For example, the second indication information may be a HARQ process number (HARQ process number) field in DCI, which may indicate a start value of the first HARQ process number. The third indication information may be used to indicate the start values of the other HARQ process numbers among the start values of the at least two HARQ process numbers, except for the start value of the first HARQ process number described above. For example, the third indication information may indicate a start value of the second HARQ process number, a start value of the third HARQ process number, or even a start value of more HARQ process numbers.

The base station may set HARQ process numbers of the N PDSCH according to start values of at least two HARQ process numbers indicated by the control information.

S1002: the base station transmits N PDSCH.

Accordingly, the terminal receives N PDSCH from the base station.

It should be understood that each PDSCH of the N PDSCHs may have one HARQ process number, and the N HARQ process numbers respectively corresponding to the N PDSCHs include start values of at least two HARQ process numbers indicated by the control information.

In the embodiment of the present application, the process numbers required for the N PDSCHs are all N _m I.e. the number of base station activated SLIVs. Let the control information in S1001 indicate the start values of two HARQ process numbers, h respectively ₀ And h ₁ . Then, of the N PDSCH' S transmitted by the base station in S1002, the 1 st to 1 st

Corresponding HARQ process number of PDSCHIs->

And->

To n _m The corresponding HARQ process number of the PDSCH is +.>

For example, when the number of PDSCH scheduled is four, i.e., base station activated SLIVn, the current unoccupied set of process numbers is {0,1,7,8, 12, 15} _m =4, there is no sequence of consecutive process numbers available according to the current mechanism. If the control information in S1001 indicates the start values of two HARQ process numbers according to the embodiment shown in fig. 10, the sequence of process numbers {0,1} and {7,8} is selected. Therefore, the second indication information, such as the HARQ process number (HARQ process number) field, in the control information in S1001 indicates that the start value of the first HARQ process number is 0, and the third indication information in the control information in S1001 indicates that the start value of the second HARQ process number is 7. For another example, when the number of PDSCH scheduled is five, the sequence of process numbers {15,0,1} and {7,8} may be selected, and thus, the second indication information, such as the HARQ process number (HARQ process number) field, in the control information in S1001 indicates that the start value of the first HARQ process number is 15, and the third indication information in the control information in S1001 indicates that the start value of the second HARQ process number is 7. Thus, the HARQ process numbers of the four PDSCH transmitted by the base station in S1002 are {15,0,1} and {7,8} respectively.

In the scheme shown in fig. 10, since the process number required for the scheduled PDSCH is always n _m . When n is _m The larger the value of (c), the more likely it is that there will be no sequence of consecutive process numbers available. If at least two HARQ process number start values can be indicated, at least two shorter sequences of process numbers can be used to reduce the start value transmission using only one process numberWith multiple PDSCH, more PDSCH may result in the possibility of no available process numbers.

Also, in order to reduce the overhead of the control information, in a possible case, the third indication information may be indicated by a partial bit sequence in the NDI field and/or the RV field in the DCI. The example may be implemented by referring to the above first indication information through a partial bit sequence indication in the NDI field and/or the RV field, which is not described herein.

Based on the above scheme, the third indication information can multiplex part of bit sequences of the NDI and/or RV fields, so that the waste of DCI resources can be effectively reduced.

In another possible case, consider the number of SLIV n when control information is active _m When=7 or 8, the number of unused bit sequences of the NDI field and the RV field may not be enough to indicate the start value of at least two HARQ process numbers. However, at this time, since 7 or 8 consecutive HARQ process numbers are required, there is a maximum possibility that no consecutive HARQ process number sequence is available. For n _m In the case of < 7, when the unused bit sequence max n in either the NDI field or RV field _i -n _m The number of unused bit sequences in NDI field and RV field is also insufficient to indicate HARQ process number when < 2.

Thus, for this case, one or more specified fields may be newly added to the control information, each of which may be optionally 4 bits in length, and each of which may indicate a start value of a process number. Specifically, when there is no available continuous HARQ process number sequence, a specific field may be added to indicate a start value of one HARQ process number until there is an available continuous HARQ process number sequence. Wherein the newly added one or more specified fields may be regarded as third indication information.

For example, when the currently unoccupied process number set is {0,1,7,8, 11,12, 15}, the number of PDSCH scheduled is six, i.e., base station activated SLIVn _m Serial process numbers are {0,1}, {7,8} and {11,12} respectively, =6. Since the second indication information, such as HARQ process number "HARQ process number" field in the control information has indicated the start value of the first HARQ process number,e.g., 0, i.e., a start value that requires the base station to additionally indicate two HARQ process numbers. The base station may add two specific fields in the control information in S1001, for carrying the start values of the two HARQ process numbers, such as the start value of the second HARQ process number and the start value of the third HARQ process number, respectively. Wherein the start value of the second HARQ process number and the start value of the third HARQ process number may be 7 and 11, respectively.

Thus, the HARQ process numbers of the six PDSCH transmitted by the base station in S1002 are {0,1}, {7,8} and {11,12}, respectively.

Alternatively, the number of SLIV n when the base station is active may be predefined _m >And N, using the newly added designated field to indicate other HARQ process numbers except the first HARQ process number. The above N may be an integer of 2, 3 or 5. N may be indicated by the base station or may be set according to an empirical value or may be predefined by the protocol.

Currently, the control information may include a plurality of fields, such as the control information in S401 and S1001, in which the lengths of some fields are fixed and some fields are variable. When the terminal controls information from the base station, blind detection is required on the PDCCH. Since the blind detection needs to try the possible combinations of the lengths of the different fields in the control information, the number of the possible combinations is the product of the possible lengths of each field. Thus, the complexity of blind detection increases substantially every time one possible length is increased.

Therefore, in order to solve the above problem, the embodiment of the present application proposes that the base station may divide the control information into two parts for transmission. The first part can carry a TDRA field and all or part of the fields with fixed length, and the second part can carry other fields such as NDI and RV, so that the control information cost can be reduced on the premise of not changing the blind detection complexity.

Referring to fig. 11, an exemplary flowchart of a method for transmitting control information according to an embodiment of the present application may include the following operations.

S1101: the base station transmits first information on a first time-frequency resource.

Accordingly, the terminal receives the first information from the base station at the first time-frequency resource. The first information may include a TDRA, such as a TDRA table.

S1102: and the base station transmits second information on the second time-frequency resource.

Correspondingly, the terminal receives the second information from the base station at the second time-frequency resource.

It should be understood that the first information and the second information are part of the control information. Optionally, NDI and RV may be included in the second information.

As mentioned above, there are currently at most two possible lengths for the NDI field and the RV field, respectively. In the technical solution shown in fig. 11, the control information is transmitted in two parts, and since the first information includes the TDRA, the terminal can determine the actual lengths of the NDI field and the RV field in the second information as long as the TDRA field is decoded, so that the blind detection complexity of the second information is not increased even if the possible lengths of the NDI field and the RV field are increased.

Optionally, the first information may further include other fixed-length fields in the control information. For example, format information of the control information, such as identification (Identifier for DCI formats) of the DCI format, modulation and coding strategy (modulation and coding scheme, MCS), HARQ process number (HARQ process number), etc., may be further included in the first information.

Based on the above scheme, other fields with fixed lengths are carried in the first information, so that the complexity of the terminal in blind detection of the first information is very low relative to the complexity of the second information, thereby ensuring quick resolution of the information of the TDRA field.

Optionally, the second information may further include other fields in the control information than the first information. For example, the second information may further include a bandwidth part indication (bandwidth part indicator), an FDRA, and the like.

In the embodiment of the present application, the first time-frequency resource and the second time-frequency resource have no specific requirement. The first time-frequency resource may be located at the beginning, end, some section of continuous time-frequency resource in the middle of the control information, or discretely distributed over the time-frequency resources in the control information.

Illustratively, the first time-frequency resource may be located before the second time-frequency resource in the time domain. Alternatively, the first time-frequency resource may be located after the second time-frequency resource in the time domain. Alternatively, the second time-frequency resource may include a plurality of third time-frequency resources, and the first time-frequency resource may be located between the plurality of third time-frequency resources in the time domain. Alternatively still, the first time-frequency resource may include a plurality of fourth time-frequency resources, and the second time-frequency resource may be located between the plurality of fourth time-frequency resources in the time domain. Alternatively still, the first time-frequency resource may include a plurality of fourth time-frequency resources, the second time-frequency resource may include a plurality of third time-frequency resources, and the plurality of third time-frequency resources may be staggered with the plurality of fourth time-frequency resources. It should be understood that the relationship between the first time-frequency resource and the second time-frequency resource may be predefined by a protocol, which is not specifically limited in this application.

Referring to fig. 12, there are shown time domain relationships of four first time-frequency resources and a second time-frequency resource. In fig. 12 a, the first time-frequency resource is located before the second time-frequency resource in the time domain. It should be appreciated that the first time-frequency resource and the second time-frequency resource may be contiguous or non-contiguous. For example, the time unit of the interval between the end position of the time domain resource of the first time-frequency resource and the start position of the time domain resource of the second time-frequency resource is an integer of 0, 1, 2 or 3.

In fig. 12 b, the first time-frequency resource is located temporally after the second time-frequency resource. It should be appreciated that the first time-frequency resource and the second time-frequency resource may be contiguous or non-contiguous. For example, the time unit of the interval between the end position of the time domain resource of the second time-frequency resource and the start position of the time domain resource of the first time-frequency resource is an integer of 0, 1, 2 or 3.

In fig. 12 c, the second time-frequency resources comprise two third time-frequency resources. The first time-frequency resource may be located in the time domain intermediate the two third time-frequency resources. Likewise, the first time-frequency resource and the third time-frequency resource may be continuous or discontinuous.

In fig. 12 b, the first time-frequency resources include two fourth time-frequency resources, and the second time-frequency resources include 3 third time-frequency resources. The two fourth time-frequency resources are discretely distributed among the 3 third time-frequency resources. Likewise, the third time-frequency resource and the fourth time-frequency resource may be continuous or discontinuous.

It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of combinations of actions, but it should be understood by those skilled in the art that the embodiments are not limited by the order of actions described, as some steps may take place in other order or simultaneously according to the embodiments of the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the embodiments of the present application.

Based on the above method embodiments, the embodiments of the present application correspondingly provide a communication device. Fig. 13 to 15 are schematic structural diagrams of possible communication devices according to embodiments of the present application. These communication devices may be used to implement the functions of the terminal or the base station in the above method embodiments, so that the beneficial effects of the above method embodiments may also be implemented. In this embodiment of the present application, the communication device may be a terminal or a base station, and may also be a module (such as a chip) applied to the terminal or the base station.

As shown in fig. 13, the communication apparatus 1300 includes a processing unit 1310 and a transceiving unit 1320. The communication device 1300 is used to implement the functions of the terminal and the base station in the method embodiments shown in fig. 4 to 10 described above.

When the communication device 1300 is used to implement the functions of a terminal in the method embodiment shown in fig. 4: the transceiver 1320 is configured to receive control information from a network device, where the control information is used to schedule N data channels. N is an integer greater than 1. The control information includes first indication information for indicating the number of time domain resources carrying HARQ-ACK information. A processing unit 1310, configured to generate HARQ-ACK information for N data channels. The transceiver 1320 is further configured to send HARQ-ACK information of the N data channels according to the number of time domain resources carrying HARQ-ACK information.

In one design, when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is 1, the transceiver 1320 is further configured to send 1 HARQ-ACK information, where the 1 HARQ-ACK information is HARQ-ACK information corresponding to N data channels respectively. Or when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is M, the transceiver unit 1320 is further configured to send M HARQ-ACK information, where the M-th HARQ-ACK information in the M HARQ-ACK information is HARQ-ACK information corresponding to the M-th group of data channels in the N data channels; m is an integer greater than 1, M is taken throughout 1 to M.

In one design, the control information further includes first time domain resource indication information of the HARQ-ACK information. The transceiver unit 1320 is further configured to send one HARQ-ACK information on the first time domain resource when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is 1. The first time domain resource is indicated by the first time domain resource indication information. Or when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is M, the transceiver unit 1320 is further configured to send M HARQ-ACK information on a second time domain resource corresponding to the mth group of data channels; the time unit interval between the second time domain resource corresponding to the mth group of data channels and the time domain resource occupied by the last data channel in the mth group of data channels in the time domain meets the first time domain resource indication information.

When the communications apparatus 1300 is used to implement the functionality of a base station in the method embodiment shown in fig. 4: a processing unit 1310, configured to generate control information, where the control information is used to schedule N data channels. The control information includes first indication information for indicating the number of time domain resources carrying hybrid automatic repeat request HARQ-ACK information, N being an integer greater than 1. And a transceiving unit 1320 for transmitting control information to the terminal device. The transceiver 1320 is further configured to receive HARQ-ACK information of N data channels according to the number of time domain resources carrying HARQ-ACK information.

In one design, when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is 1, the transceiver 1320 is further configured to receive 1 HARQ-ACK information, where 1 HARQ-ACK information is HARQ-ACK information corresponding to N data channels respectively. Or when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is M, the transceiver unit 1320 is further configured to receive M HARQ-ACK information, where the M-th HARQ-ACK information in the M HARQ-ACK information is HARQ-ACK information corresponding to the M-th group of data channels in the N data channels; m is an integer greater than 1, M is taken throughout 1 to M.

In one design, the control information further includes first time domain resource indication information of the HARQ-ACK information. The transceiver unit 1320 is further configured to receive one HARQ-ACK information on the first time domain resource when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is 1. The first time domain resource is indicated by the first time domain resource indication information. Or, when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is M, the transceiver unit 1320 is further configured to receive M HARQ-ACK information on a second time domain resource corresponding to the mth group of data channels; the time unit interval between the second time domain resource corresponding to the mth group of data channels and the time domain resource occupied by the last data channel in the mth group of data channels in the time domain meets the first time domain resource indication information.

When the communication apparatus 1300 is used to implement the functions of a terminal in the method embodiment shown in fig. 10: the transceiver unit 1320 is configured to receive control information from a network device, where the control information is used to schedule N data channels, and N is an integer greater than 1. The control information is used to indicate a start value of at least two HARQ process numbers. A processing unit 1310, configured to determine HARQ process numbers of the N data channels. A transceiver 1320, configured to receive N data channels according to the control information; the N data channels respectively correspond to the HARQ process numbers and comprise the initial values of at least two HARQ process numbers.

When the communications apparatus 1300 is used to implement the functionality of a base station in the method embodiment shown in fig. 10: the transceiving unit 1320 is configured to send control information to the terminal device, where the control information is used to schedule N data channels, and N is an integer greater than 1. The control information is used to indicate a start value of at least two HARQ process numbers. A processing unit 1310, configured to generate N data channels according to the control information. The transceiver 1320 is further configured to send N data channels, where the N data channels respectively correspond to HARQ process numbers and include start values of at least two HARQ process numbers.

When the communication apparatus 1300 is used to implement the functions of a terminal in the method embodiment shown in fig. 11: the transceiver unit 1320 is configured to receive first information on the first time-frequency resource, where the first information includes a TDRA. The TDRA is used for indicating time domain resources of a data channel scheduled by the control information, and the first information is used for indicating first part of information of the control information. The transceiver 1320 is configured to receive the second information on the second time-frequency resource. Wherein the second information is used to indicate second part of information of the control information. A processing unit 1310 for decoding the first information and the second information.

When the communications apparatus 1300 is used to implement the functionality of a base station in the method embodiment shown in fig. 11: a processing unit 1310 for generating first information and second information. The first information includes a TDRA, where the TDRA is used to indicate a time domain resource of a data channel scheduled by the control information, and the first information is used to indicate first part of information of the control information. The second information is used to indicate second partial information of the control information. The transceiver 1320 is configured to transmit the first information on the first time-frequency resource and transmit the second information on the second time-frequency resource.

The above-mentioned processing unit 1310 and transceiver unit 1320 may be directly described with reference to the related descriptions in the method embodiments shown in fig. 4 to 12, which are not repeated herein.

As shown in fig. 14, communication device 1400 includes a processor 1410 and an interface circuit 1420. The processor 1410 and the interface circuit 1420 are coupled to each other. It is to be appreciated that the interface circuit 1420 may be a transceiver or an input-output interface. Optionally, the communication device 1400 may also include a memory 1430 for storing instructions to be executed by the processor 1410 or for storing input data required by the processor 1410 to execute instructions or for storing data generated after the processor 1410 executes instructions.

When the communication device 1400 is used to implement the methods shown in fig. 4 to 10, the processor 1410 is used to implement the functions of the processing unit 1310, and the interface circuit 1420 is used to implement the functions of the transceiver unit 1340.

When the communication device is a chip applied to the terminal, the terminal chip realizes the functions of the terminal in the embodiment of the method. The terminal chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal, and the information is sent to the terminal by the base station; alternatively, the terminal chip sends information to other modules in the terminal (e.g., radio frequency modules or antennas) that the terminal sends to the base station.

When the communication device is a module applied to a base station, the base station module realizes the functions of the base station in the method embodiment. The base station module receives information from other modules (such as radio frequency modules or antennas) in the base station, the information being transmitted by the terminal to the base station; alternatively, the base station module transmits information to other modules in the base station (e.g., radio frequency modules or antennas) that the base station transmits to the terminal. The base station module may be a baseband chip of a base station, or may be a DU or other module, where the DU may be a DU under an open radio access network (open radio access network, O-RAN) architecture.

In the embodiment of the present application, the transceiver unit 1320 may include a baseband processing module, a radio frequency processing module, and an antenna. Referring to fig. 15, a schematic structural diagram of a transceiver unit according to an embodiment of the present application is provided. The transceiver unit 1500 includes a baseband processing module 1510, a radio frequency processing module 1520, and an antenna 1530. The baseband processing module 1510 is configured to process a baseband signal, and may specifically include demodulating, decoding a downlink signal, and encoding and modulating an uplink signal. The baseband processing module 1510 may be, in particular, a baseband chip. The rf processing module 1520 is configured to process the rf signal, and may specifically include performing analog domain filtering on the uplink and downlink signals and performing power amplification on the uplink and downlink signals. The rf processing module 1520 may be specifically a rf chip. The antenna 1530 is used for receiving radio waves from the space, converting the radio waves into downlink signals, and transmitting the downlink signals to the rf processing module 1520, or converting uplink signals from the rf processing module 1520 into radio waves and transmitting the radio waves into the space.

When the transceiver unit 1500 is disposed in a terminal, the antenna 1530 may receive radio waves from a space for downlink signals, convert the radio waves into downlink signals (e.g., control information), and transmit the downlink signals to the rf processing module 1520. The rf processing module 1520 may process the downlink signal and send the processed downlink signal to the baseband processing module 1510. The baseband processing module 1510 may demodulate and decode the downlink signal received from the rf processing module 1520 to obtain information (e.g., the first indication information) in the downlink signal. For uplink signals, the baseband processing module 1510 may encode and modulate the uplink signals (e.g., HARQ-ACK information) and send the processed uplink signals to the radio frequency processing module 1520. The rf processing module 1520 may process the uplink signal received from the baseband processing module 1510 and transmit the processed uplink signal to the antenna 1530. The antenna 1530 may convert an uplink signal received from the radio frequency processing module 1520 into a radio wave to be transmitted into space.

When the transceiver unit 1500 is disposed in a base station, the baseband processing module may encode and modulate a downlink signal (e.g., control information) and transmit the processed downlink signal to the rf processing module 1520. The rf processing module 1520 may process the downlink signal received from the baseband processing module 1510 and transmit the processed downlink signal to the antenna 1530. The antenna 1530 may convert the downlink signal received from the radio frequency processing module 1520 into radio waves to be transmitted into space. For uplink signals, an antenna 1530 may receive radio waves from the space, convert the radio waves into uplink signals (e.g., HARQ-ACK information), and transmit the uplink signals to a radio frequency processing module 1520. The rf processing module 1520 may process the uplink signal and transmit the processed uplink signal to the baseband processing module 1510. The baseband processing module 1510 may demodulate and decode the uplink signal received from the rf processing module 1520 to obtain information (e.g., negative acknowledgement or positive acknowledgement) in the uplink signal.

It is to be appreciated that the processor in embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.

The present application also provides a computer readable storage medium storing a computer program or instructions which, when executed, implement a method performed by a network device or a terminal device in the foregoing method embodiments. Thus, the functions described in the above embodiments may be implemented in the form of software functional units and sold or used as independent products. Based on such understanding, the technical solution of the present application may be embodied in essence or contributing part or 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. The storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The present application also provides a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method performed by the terminal device or the network device in any of the method embodiments described above.

The application also provides a system comprising the terminal equipment and the network equipment.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform a method performed by the terminal device or the network device according to any of the above method embodiments.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by a processor executing software instructions. The software instructions may be comprised of corresponding software modules that may be stored in random access memory, flash memory, read only memory, programmable read only memory, erasable programmable read only memory, electrically erasable programmable read only memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a base station or terminal. The processor and the storage medium may reside as discrete components in a base station or terminal.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as digital video discs; but also semiconductor media such as solid state disks. The computer readable storage medium may be volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage medium.

In the various embodiments of the application, if there is no specific description or logical conflict, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments according to their inherent logical relationships.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. In the text description of the present application, the character "/", generally indicates that the associated object is an or relationship; in the formulas of the present application, the character "/" indicates that the front and rear associated objects are a "division" relationship. "including at least one of A, B and C" may mean: comprises A; comprises B; comprising C; comprises A and B; comprises A and C; comprises B and C; including A, B and C.

It should also be understood that, in this application, "when …", "if" and "if" all refer to a corresponding process that the network element will make under some objective condition, are not limited in time, nor do it require that the network element be implemented with a judging action, nor are other limitations meant to be present.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application. The sequence number of each process does not mean the sequence of the execution sequence, and the execution sequence of each process should be determined according to the function and the internal logic.

Claims

1. A transmission method of control information, comprising:

the terminal equipment receives control information from the network equipment, wherein the control information is used for scheduling N data channels; n is an integer greater than 1; the control information comprises first indication information, wherein the first indication information is used for indicating the number of time domain resources carrying hybrid automatic repeat request (HARQ-ACK) information;

and the terminal equipment sends the HARQ-ACK information of the N data channels according to the number of the time domain resources carrying the HARQ-ACK information.

2. The method of claim 1, wherein the first indication information indicates the number of time domain resources carrying HARQ-ACK information by indicating an increased number of time domain resources carrying HARQ-ACK information.

3. The method according to claim 1 or 2, wherein when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is 1, the terminal device sends 1 HARQ-ACK information, and the 1 HARQ-ACK information is HARQ-ACK information corresponding to the N data channels respectively; or alternatively

When the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is M, the terminal equipment sends M pieces of HARQ-ACK information; the M-th HARQ-ACK information in the M HARQ-ACK information is the HARQ-ACK information corresponding to the M-th group of data channels in the N data channels; and M is an integer greater than 1, and the M is 1 to M.

4. The method of claim 3, wherein the control information further comprises first time domain resource indication information of HARQ-ACK information; the method further comprises the steps of:

when the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is 1, the terminal equipment sends one piece of HARQ-ACK information on the first time domain resource; the first time domain resource is indicated by the first time domain resource indication information; or alternatively

When the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is M, the terminal equipment sends one piece of HARQ-ACK information on a second time domain resource corresponding to the mth group of data channels; and the second time domain resource corresponding to the mth group of data channels and the time unit interval between the time domain resource occupied by the last data channel of the mth group of data channels in the time domain satisfy the first time domain resource indication information.

5. The method according to claim 3 or 4, wherein M groups of data channels included in the N data channels are determined according to a start position of a time domain resource occupied by a first data channel of the N data channels and an end position of a time domain resource occupied by an nth data channel; or alternatively

The M groups of data channels included in the N data channels are determined according to second time domain resource indication information of the N data channels, where the second time domain resource indication information of the N data channels is indicated by the network device.

6. The method according to any of claims 1-5, wherein the first indication information indicates a partial bit sequence of NDI or a partial bit sequence indication of redundancy version RV based on new data in the control information.

7. A transmission method of control information, comprising:

the network equipment sends control information to the terminal equipment, wherein the control information is used for scheduling N data channels; the N is an integer greater than 1; the control information comprises first indication information, wherein the first indication information is used for indicating the number of time domain resources carrying hybrid automatic repeat request (HARQ-ACK) information;

And the network equipment receives the HARQ-ACK information of the N data channels according to the number of the time domain resources carrying the HARQ-ACK information.

8. The method of claim 7, wherein the first indication information indicates the number of time domain resources carrying HARQ-ACK information by indicating an increased number of time domain resources carrying HARQ-ACK information.

9. The method according to claim 7 or 8, wherein when the first indication information indicates that the number of time domain resources carrying HARQ-ACK information is 1, the network device receives 1 HARQ-ACK information, and the 1 HARQ-ACK information is HARQ-ACK information corresponding to the N data channels respectively; or alternatively

When the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is M, the network equipment receives M pieces of HARQ-ACK information; the M-th HARQ-ACK information in the M HARQ-ACK information is the HARQ-ACK information corresponding to the M-th group of data channels in the N data channels; and M is an integer greater than 1, and the M is 1 to M.

10. The method of claim 9, wherein the control information further comprises first time domain resource indication information of HARQ-ACK information; the method further comprises the steps of:

When the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is 1, the network equipment receives one piece of HARQ-ACK information on the first time domain resource; the first time domain resource is indicated by the first time domain resource indication information; or alternatively

When the first indication information indicates that the number of time domain resources carrying the HARQ-ACK information is M, the network equipment receives one piece of HARQ-ACK information on a second time domain resource corresponding to the mth group of data channels; and the second time domain resource corresponding to the mth group of data channels and the time unit interval between the time domain resource occupied by the last data channel of the mth group of data channels in the time domain satisfy the first time domain resource indication information.

11. The method according to claim 9 or 10, wherein M groups of data channels included in the N data channels are determined according to a start position of a time domain resource occupied by a first data channel of the N data channels and an end position of a time domain resource occupied by an nth data channel; or alternatively

The M groups of data channels included in the N data channels are determined according to second time domain resource indication information of the N data channels.

12. The method according to any of the claims 7-11, characterized in that the first indication information indicates a partial bit sequence of NDI or a partial bit sequence indication of redundancy version RV based on new data in the control information.

13. A transmission method of control information, comprising:

the terminal equipment receives control information from the network equipment, wherein the control information is used for scheduling N data channels; the N is an integer greater than 1; the control information is used for indicating the initial values of at least two HARQ process numbers;

the terminal equipment receives the N data channels according to the control information; and the N data channels respectively correspond to the HARQ process numbers and comprise the initial values of the at least two HARQ process numbers.

14. The method according to claim 13, wherein the control information includes second indication information and third indication information; the second indication information is used for indicating the starting value of the first HARQ process number, and the third indication information is used for indicating the starting values of other HARQ process numbers except the starting value of the first HARQ process number in the starting values of the at least two HARQ process numbers.

15. The method of claim 14, wherein the third indication information is based on a partial bit sequence of a redundancy version RV or a partial bit sequence indication of a new data indication NDI in the control information.

16. A transmission method of control information, comprising:

control information sent by the network equipment to the terminal equipment, wherein the control information is used for scheduling N data channels; the N is an integer greater than 1; the control information is used for indicating the initial values of at least two HARQ process numbers;

the network equipment sends the N data channels according to the control information; and the N data channels respectively correspond to the HARQ process numbers and comprise the initial values of the at least two HARQ process numbers.

17. The method according to claim 16, wherein the control information includes second indication information and third indication information; the second indication information is used for indicating the starting value of the first HARQ process number, and the third indication information is used for indicating the starting values of other HARQ process numbers except the starting value of the first HARQ process number in the starting values of the at least two HARQ process numbers.

18. The method of claim 17, wherein the third indication information is based on a partial bit sequence of a redundancy version RV or a partial bit sequence indication of a new data indication NDI in the control information.

19. A transmission method of control information, comprising:

The method comprises the steps that a terminal device receives first information on a first time-frequency resource, wherein the first information comprises Time Domain Resource Allocation (TDRA) which is used for indicating time domain resources of a data channel scheduled by control information, and the first information is used for indicating first part of information of the control information;

the terminal equipment receives second information in a second time-frequency resource, wherein the second information is used for indicating second part of information of the control information.

20. The method of claim 19, wherein the first information further comprises format information, modulation and coding scheme, and hybrid automatic repeat request, HARQ, process number of the control information.

21. The method according to claim 19 or 20, characterized in that new data indication NDI and redundancy version RV are included in the second information.

22. The method according to any of claims 19-21, wherein the first time-frequency resource is temporally located before the second time-frequency resource; or alternatively

The first time-frequency resource is located after the second time-frequency resource in the time domain; or alternatively

The second time-frequency resource comprises a plurality of third time-frequency resources; the first time-frequency resource is located among the third time-frequency resources in the time domain; or alternatively

The first time-frequency resource comprises a plurality of fourth time-frequency resources, and the second time-frequency resource is positioned among the fourth time-frequency resources in the time domain; or alternatively

The first time-frequency resource comprises a plurality of fourth time-frequency resources, the second time-frequency resource comprises a plurality of third time-frequency resources, and the third time-frequency resources and the fourth time-frequency resources are arranged in a staggered mode.

23. A transmission method of control information, comprising:

the network equipment sends first information on a first time-frequency resource, wherein the first information comprises Time Domain Resource Allocation (TDRA) which is used for indicating time domain resources of a data channel scheduled by control information, and the first information is used for indicating first part of information of the control information;

and the network equipment transmits second information in a second time-frequency resource, wherein the second information is used for indicating second part of information of the control information.

24. The method of claim 23, wherein the first information further comprises format information, modulation and coding scheme, and hybrid automatic repeat request, HARQ, process number of the control information.

25. The method according to claim 23 or 24, characterized in that new data indication NDI and redundancy version RV are included in the second information.

26. The method according to any one of claims 23 to 25, wherein the first time-frequency resource is temporally located before the second time-frequency resource; or alternatively

27. A communication device comprising means for performing the method of any one of claims 1 to 6, or for performing the method of any one of claims 7 to 12, or for performing the method of any one of claims 13 to 15, or for performing the method of any one of claims 16 to 18, or for performing the method of any one of claims 19 to 22, or for performing the method of any one of claims 23 to 26.

28. A communication device comprising a processor and a memory, the memory storing a computer program or instructions for executing the computer program or instructions in the memory, causing the method of any one of claims 1 to 6 or causing the method of any one of claims 7 to 12 or causing the method of any one of claims 13 to 15 or causing the method of any one of claims 16 to 18 or causing the method of any one of claims 19 to 22 or causing the method of any one of claims 23 to 26 to be performed.

29. A computer readable storage medium, characterized in that a computer program or instructions is stored which, when executed by a communication device, implements the method of any one of claims 1 to 6, or implements the method of any one of claims 7 to 12, or implements the method of any one of claims 13 to 15, or implements the method of any one of claims 16 to 18, or implements the method of any one of claims 19 to 22, or implements the method of any one of claims 23 to 26.

30. A computer program product, characterized in that the computer program product comprises computer program code which, when run by a computer, causes the computer to carry out the method of any one of claims 1 to 6, or causes the computer to carry out the method of any one of claims 7 to 12, or causes the computer to carry out the method of any one of claims 13 to 15, or causes the computer to carry out the method of any one of claims 16 to 18, or causes the computer to carry out the method of any one of claims 19 to 22, or causes the computer to carry out the method of any one of claims 23 to 26.