CN111656720A - Method and equipment for transmitting downlink control information - Google Patents

Abstract

The application provides a method and equipment for transmitting downlink control information, which receive the downlink control information according to information indicated by a first signaling and a second signaling, so that a transmission scheme dynamically indicated by the downlink control information depends on channel state information fed back by terminal equipment and the setting of the downlink control information, and a semi-static configuration transmission scheme is avoided, so that the transmission scheme can be flexibly determined in the aspect of downlink control information setting, and the flexibility of a communication system is improved. The method comprises the following steps: the terminal equipment receives a first signaling and a second signaling, wherein the first signaling is used for indicating the maximum number of the scheduled transmission blocks supported by the downlink control information, and the second signaling is used for indicating the maximum value of the channel rank and/or the number of transmission layers supported by the terminal equipment for feeding back the channel quality information; and the terminal equipment receives the downlink control information according to the maximum number of the supported and scheduled transmission blocks, the maximum value of the channel rank and/or the maximum value of the transmission layer number.

Description

Method and equipment for transmitting downlink control information Technical Field

The present application relates to the field of communications, and in particular, to a method and apparatus for transmitting downlink control information.

Background

Currently, in a Long Term Evolution (LTE) system, a network device (e.g., a base station) configures a transmission mode of a physical shared channel semi-statically through a high-layer signaling, and a terminal device may determine an available downlink control information format according to the configured transmission mode. Further, the terminal device may perform blind detection on the downlink control channel according to the determined downlink control information format to obtain the downlink control information.

However, the 5G system or the New Radio (NR) system has a high requirement on flexibility, and the transmission scheme is configured in a semi-static configuration manner, which cannot meet the requirement of the 5G system on flexibility. Therefore, how to flexibly determine the transmission scheme is a problem which needs to be solved urgently at present.

Disclosure of Invention

The application provides a method and equipment for transmitting downlink control information, which can realize good communication between terminal equipment and network equipment under the condition that a first signaling and a second signaling are not matched.

In a first aspect, a method for transmitting downlink control information is provided, including: the method comprises the steps that terminal equipment receives a first signaling, wherein the first signaling is used for indicating the maximum number of transmission blocks which support scheduling in downlink control information; the terminal equipment receives a second signaling, wherein the second signaling is used for indicating the maximum value of the channel rank and/or the number of transmission layers supported by the feedback channel quality information of the terminal equipment; and the terminal equipment receives the downlink control information according to the maximum number of the transmission blocks supported to be scheduled, the maximum value of the channel rank and/or the maximum value of the transmission layer number.

In a second aspect, a method for transmitting downlink control information is provided, including: the terminal equipment receives a first signaling, wherein the first signaling is used for indicating the maximum number of transmission blocks supporting scheduling in the downlink control information; the terminal equipment receives a second signaling, wherein the second signaling is used for indicating the maximum value of the channel rank and/or the number of transmission layers supported by the feedback channel quality information of the terminal equipment; and the terminal equipment determines whether to receive the downlink control information according to the maximum number of the transmission blocks supported to be scheduled, the maximum value of the channel rank and/or the maximum value of the transmission layer number.

In a third aspect, a method for transmitting downlink control information is provided, including: the network equipment sends a first signaling, wherein the first signaling is used for indicating the maximum number of the transmission blocks which support scheduling in the downlink control information; the network equipment sends a second signaling, wherein the second signaling is used for indicating the maximum value of the channel rank and/or the number of transmission layers supported by the terminal equipment for feeding back the channel quality information; and the network equipment sends the downlink control information according to the maximum number of the transmission blocks supported to be scheduled, the maximum value of the channel rank and/or the maximum value of the transmission layer number.

In a fourth aspect, a method for transmitting downlink control information is provided, including: the network equipment sends a first signaling, wherein the first signaling is used for indicating the maximum number of the transmission blocks which support scheduling in the downlink control information; the network equipment sends a second signaling, wherein the second signaling is used for indicating the maximum value of the channel rank and/or the number of transmission layers supported by the terminal equipment for feeding back the channel quality information; and the network equipment determines whether to send the downlink control information according to the maximum number of the transmission blocks supported to be scheduled, the maximum value of the channel rank and/or the maximum value of the transmission layer number.

A fifth aspect provides a terminal device, configured to perform the method in the first aspect or any optional implementation manner of the first aspect. In particular, the terminal device comprises functional modules for performing the method described in the first aspect or any of the optional implementations of the first aspect.

A sixth aspect provides a terminal device configured to perform the method of the second aspect or any optional implementation manner of the second aspect. In particular, the terminal device comprises functional modules for performing the method described in the second aspect above or any alternative implementation of the second aspect.

A seventh aspect provides a network device, configured to perform the method in the third aspect or any optional implementation manner of the third aspect. In particular, the terminal device comprises functional modules for performing the method described in the third aspect or any of the alternative implementations of the third aspect.

An eighth aspect provides a network device configured to perform the method of the fourth aspect or any optional implementation manner of the fourth aspect. In particular, the terminal device comprises functional modules for performing the method described in the fourth aspect or any alternative implementation manner of the fourth aspect.

In a ninth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.

In a tenth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.

In an eleventh aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the third aspect or each implementation manner thereof.

In a twelfth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the fourth aspect or each implementation manner thereof.

In a thirteenth aspect, a chip is provided for implementing the method of the first aspect or any possible implementation manner of the first aspect. In particular, the chip comprises a processor for calling and running a computer program from a memory, such that a device in which the chip is installed performs the method as described above in the first aspect or any possible implementation manner of the first aspect.

In a fourteenth aspect, a chip is provided for implementing the method of the second aspect or any possible implementation manner of the second aspect. In particular, the chip comprises a processor for calling and running a computer program from a memory, such that a device in which the chip is installed performs the method as described above in the second aspect or any possible implementation of the second aspect.

In a fifteenth aspect, a chip is provided for implementing the method of the third aspect or any possible implementation manner of the third aspect. In particular, the chip comprises a processor for calling and running a computer program from a memory, such that a device in which the chip is installed performs the method of the third aspect or any possible implementation of the third aspect as described above.

In a sixteenth aspect, a chip is provided for implementing the method of the fourth aspect or any possible implementation manner of the fourth aspect. In particular, the chip comprises a processor for calling and running a computer program from a memory, such that a device in which the chip is installed performs the method as described above in the fourth aspect or any possible implementation manner of the fourth aspect.

A seventeenth aspect provides a computer-readable storage medium storing a computer program for causing a computer to perform the method of the first aspect or any possible implementation manner of the first aspect.

In an eighteenth aspect, a computer-readable storage medium is provided for storing a computer program for causing a computer to perform the method of the second aspect or any possible implementation manner of the second aspect.

A nineteenth aspect provides a computer-readable storage medium storing a computer program for causing a computer to perform the method of the third aspect or any possible implementation manner of the third aspect.

A twentieth aspect provides a computer-readable storage medium storing a computer program for causing a computer to perform the method of the fourth aspect or any possible implementation manner of the fourth aspect.

A twenty-first aspect provides a computer program product comprising computer program instructions to cause a computer to perform the method of the first aspect or any possible implementation manner of the first aspect.

In a twenty-second aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of the second aspect or any possible implementation manner of the second aspect.

In a twenty-third aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of the third aspect or any possible implementation manner of the third aspect.

A twenty-fourth aspect provides a computer program product comprising computer program instructions to cause a computer to perform the method of the fourth aspect or any possible implementation of the fourth aspect.

A twenty-fifth aspect provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect or any possible implementation of the first aspect.

In a twenty-sixth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the second aspect or any possible implementation of the second aspect.

A twenty-seventh aspect provides a computer program which, when run on a computer, causes the computer to perform the method of the third aspect or any possible implementation of the third aspect.

A twenty-eighth aspect provides a computer program which, when run on a computer, causes the computer to perform the method of the fourth aspect described above or any possible implementation of the fourth aspect.

Based on the above scheme, the terminal device receives the downlink control information according to the maximum number of the scheduled transport blocks supported in the downlink control information indicated by the first signaling and the maximum value of the channel rank and/or the number of transport layers supported by the terminal device feeding back the channel quality information indicated by the second signaling, so that the transmission scheme (e.g., MIMO transmission scheme) dynamically indicated by the downlink control information depends on the channel state information fed back by the terminal device and the setting of the downlink control information, and the semi-static configuration of the transmission scheme is avoided, so that the transmission scheme can be flexibly determined in the aspect of setting of the downlink control information, and the flexibility of the communication system is improved.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which an embodiment of the present application is applied.

Fig. 2 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present application.

Fig. 3 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present application.

Fig. 4 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present application.

Fig. 5 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a terminal device according to an embodiment of the present application.

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

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

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

Fig. 11 is a schematic structural diagram of a system chip provided in an embodiment of the present application.

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

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a future 5G System, or the like.

Fig. 1 illustrates a wireless communication system 100 to which an embodiment of the present application is applied. The wireless communication system 100 may include a network device 110. Network device 100 may be a device that communicates with a terminal device. Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area. Optionally, the Network device 100 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a Network device in a relay Station, an Access point, a vehicle-mounted device, a wearable device, a Network-side device in a future 5G Network, or a Network device in a future evolved Public Land Mobile Network (PLMN), or the like.

The wireless communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. The terminal device 120 may be mobile or stationary. Alternatively, terminal Equipment 120 may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN, etc. Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

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

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the wireless communication system 100 may further include an Access and Mobility Management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Authentication Server Function (AUSF), and other network entities, which are not limited in this embodiment of the present invention.

Moreover, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash Memory devices (e.g., Erasable Programmable Read-Only Memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, various media capable of storing, containing, and/or carrying instruction(s) and/or data.

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

In this embodiment of the present application, a network device may indicate, through a first signaling, a maximum number X of transmission blocks supported for scheduling in Downlink Control Information (DCI). For example, the first signaling may be maxnrof codewordsschedule bydci. When the value of X is 1, it indicates that the DCI can only schedule one transmission block, that is, the DCI only has a group of information fields for indicating independent scheduling information corresponding to the one transmission block; when X is 2, it indicates that the DCI can schedule two transport blocks at most, and each transport block has a separate information field. Namely, the DCI includes two sets of information fields, and each set of the two sets of information fields is used to indicate independent scheduling information corresponding to one transport block. The independent scheduling information may refer to scheduling information specific to the transport block that is different from other transport blocks. Wherein, the information field indicating the independent scheduling information corresponding to the transmission block comprises at least one of the following information fields: a Modulation and Coding Scheme (MCS) information field, a New Data Indicator (NDI) information field, and a Redundancy Version (RV) information field. The MCS indicates the modulation coding pattern used for transmission, the NDI indicates whether the scheduled data is a new transmission or a retransmission, and the RV indicates the redundancy version used for transmission.

The network device generally configures the terminal device to report Channel State Information (CSI), where the CSI generally includes RI, Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), channel state information reference signal resource indicator (CRI), Layer Indicator (LI), and Layer 1 reference signal received power (L1-RSRP). CQI is used to reflect channel quality, RI is used to indicate the number of valid data layers, PMI is used to indicate the index (index) of the codebook set, CRI is used to indicate the transmission resources of the reference signal for channel state measurement, LI is used to indicate the strongest transmission layer, and L1-RSRP is used to indicate the layer 1 reference signal received power.

In addition, the network device may also restrict, through the second signaling, an RI range that can be reported when the terminal device reports the CSI.

The second higher layer signaling may be typeI-singlePanel-RI-Restriction or typeII-RI-Restriction. the typeI-singlePanel-ri-recovery comprises a bit sequence of r₇,……,r₁,r₀Wherein r is₀Is the Least Significant Bit (LSB), r₇Is the Most Significant Bit (MSB). When r is_iWhen the value of (1) is 0, the terminal device does not allow reporting of the PMI and RI corresponding to the number of transmission layers υ +1, wherein a bit sequence included by i ∈ {0,1,. once.7 }. typeII-RI-redundancy is r₁,r₀Wherein r is₀Is the least significant bit, r₁Is the most significant bit. When r is_iWhen the value of (1) is 0, the terminal does not allow reporting the PMI and RI corresponding to the transmission layer number upsilon ═ i +1, where i ∈ {0,1 }.

In the NR system, when the number of transmission layers is less than or equal to 4, a shared channel uses 1 transmission block for transmission; when the number of transport layers is greater than 4 and less than or equal to 8, the shared channel needs to use 2 transport blocks for data transmission. A transport block may also sometimes be referred to as a codeword. The mapping relationship between the number of layers and the code word is shown in table 1 below.

TABLE 1

The embodiment of the application can transmit the DCI by dynamically sending the first signaling and the second signaling, so as to improve the flexibility of the system. The following describes in detail the schemes of the examples of the present application.

Fig. 2 is a schematic flowchart of a method 200 for transmitting downlink control information according to an embodiment of the present application. The method 200 may alternatively be applied to the system shown in fig. 1, but is not limited thereto. As shown in fig. 2, the method 200 includes at least some of the following.

In step 210, the terminal device receives a first signaling and a second signaling, where the first signaling is used to indicate a maximum number of transmission blocks supported by scheduling in the DCI, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transmission layers supported by the terminal device for feeding back channel quality information. The first signaling may be higher layer signaling, and the second signaling may be higher layer signaling. The maximum number of supported scheduled transport blocks may be 1 or 2, and the maximum value of the channel rank and/or the number of transport layers may be a positive integer greater than or equal to 1 and less than or equal to 8.

In step 220, the terminal device receives DCI according to the maximum number of transmission blocks, the maximum value of the channel rank, and/or the maximum value of the number of transmission layers that are supported for scheduling.

Based on the above scheme, the terminal device receives the downlink control information according to the maximum number of the scheduled transport blocks supported in the downlink control information indicated by the first signaling and the maximum value of the channel rank and/or the number of transport layers supported by the terminal device feeding back the channel quality information indicated by the second signaling, so that the transmission scheme (e.g., MIMO transmission scheme) dynamically indicated by the downlink control information depends on the channel state information fed back by the terminal device and the setting of the downlink control information, and the semi-static configuration of the transmission scheme is avoided, so that the transmission scheme can be flexibly determined in the aspect of setting of the downlink control information, and the flexibility of the communication system is improved.

Optionally, in step 220, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to the first threshold and the maximum number of supported scheduled transmission blocks is less than or equal to the second threshold, the terminal device receives the DCI. And when the maximum value of the channel rank and/or the number of the transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is larger than a second threshold value, the terminal equipment receives the DCI.

Optionally, in step 220, the terminal device may not be limited to the information indicated by the first signaling and the second signaling, and may receive the DCI.

The following describes a manner in which the terminal device receives DCI.

Optionally, in step 220, the terminal device may determine the information field included in the DCI according to the maximum number of supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transmission layers, where the information field may be, for example, the number of groups of the information field, the type of the information field, and/or other information of the information field. Further, the terminal device may receive DCI according to the situation of the information domain.

Taking the case of the information field as the group number of the information field and/or the type of the information field as an example, the terminal device may determine the bit length of the DCI according to the group number of the information field and/or the type of the information field, so as to correctly receive the DCI.

It should be noted that the type of the information field may be divided according to the information indicated by the information field.

For convenience of description, the maximum number of transport blocks that can support scheduling in the first signaling is referred to as a first number, and the number of transport blocks included in the shared channel is referred to as a second number when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers.

Specifically, the terminal device may determine that the number of sets of information fields included in the downlink control information is equal to the first number.

When the first number is greater than the second number, the first number of group information fields includes the second number of group information fields and other group information fields. The type of the second quantity group information field is a first type, and the first type information field is used for indicating scheduling information of the transmission block. The type of the other group information field is a second type, the second type information field is used for indicating first information, the first information is different from the scheduling information of the transmission block, namely the second type information field is used for indicating information irrelevant to the scheduling information of the transmission block.

That is, each of the second number of sets of information fields is used to indicate scheduling information for one transport block, and each of the other sets of information fields is used to indicate information unrelated to the scheduling information for the transport block.

The first information may include at least one of the following information: service class, Coded Block Group (CBG) information and related information thereof, bandwidth part (BWP) information and related information thereof, and the like.

It should be understood that the number of the other groups of information fields may be the difference between the first number and the second number, or may be smaller than the difference between the first number and the second number.

In the technical solution provided in the embodiment of the present application, when the maximum number of transmission blocks indicated by the first signaling is greater than the maximum number of transmission blocks indicated by the second signaling, the second number group information field in the DCI may be used to indicate scheduling information of the transmission blocks, and the other group information fields may be used to indicate other information unrelated to scheduling of the transmission blocks, so that other information may be transmitted without increasing signaling, signaling overhead may be saved, and the purpose of reusing the DCI information field may be achieved.

In addition, according to the technical solution provided in the embodiment of the present application, when the first signaling and the second signaling are not matched, that is, when the maximum number of transport blocks indicated by the first signaling and the second signaling are not consistent, a DCI transmission scheme can be determined, so that the terminal device and the network device can have consistent knowledge on the group number of information fields included in the DCI and the type of the information fields, thereby improving the reliability of the system and the efficiency of data transmission.

And when the first number is equal to the second number, the number of the groups of the information fields in the DCI is equal to the first number, the type of the first number of the groups of the information fields is a first type, and each group of the information fields in the first number of the groups of the information fields is respectively used for indicating the scheduling information of one transmission block. The terminal device may determine the bit length of the DCI according to the group number of the information fields in the DCI and/or the type of the information fields, so as to correctly receive the DCI.

When the first number is less than the second number, the number of sets of information fields in the DCI is equal to the first number. The type of the first quantity group information field is a first type, and each group of information fields in the first quantity group information field is respectively used for indicating the scheduling information of one transmission block. The terminal device may determine the bit length of the DCI according to the group number of the information fields in the DCI and/or the type of the information fields, so as to correctly receive the DCI.

In addition, the terminal device may further receive a first Physical Downlink Shared Channel (PDSCH) sent by the network device, and may send, to the network device, response (ACK) or Negative Acknowledgement (NACK) feedback information corresponding to the first PDSCH according to the number of groups of the information fields in the DCI and/or the type of the information fields. The number of bits of the ACK/NACK feedback information is equal to the minimum of the second number and the first number, that is, the number of bits of the ACK/NACK feedback information is equal to the number of groups of the first type information field in the DCI, that is, the number of bits of the ACK/NACK feedback information is equal to the number of groups of the information field indicating the transport block scheduling information in the DCI.

For example, when the first number is greater than the second number, the number of bits of the ACK/NACK feedback information is equal to the second number. The first number is 2 and the second number is 1. The DCI includes 2 sets of information fields, where one set of information fields is used to indicate scheduling information of one transport block and another set of information fields is used to indicate first information unrelated to the scheduling information of the transport block. The terminal device may send ACK/NACK feedback information corresponding to the first PDSCH to the network device according to the group number of the information fields and/or the type of the information fields included in the DCI, where the bit number of the ACK/NACK feedback information is equal to the group number of the information fields indicating the scheduling information of the transport block included in the DCI, that is, 1 bit.

Optionally, in step 220, the terminal device may determine the number of groups of information fields and/or the type of the information fields included in the DCI according to the maximum number of supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transmission layers. Further, the terminal device may determine the bit length of the DCI according to the group number of the information fields and/or the type of the information fields to receive the DCI.

Optionally, the terminal device may determine the maximum number of the actually schedulable transmission blocks in the DCI according to the maximum number of the supported schedulable transmission blocks, the maximum value of the channel rank and/or the maximum value of the number of the transmission layers, and receive the DCI according to the maximum number of the actually schedulable transmission blocks in the DCI.

The embodiment of the present application does not specifically limit the manner in which the terminal device determines the maximum number of actually schedulable transmission blocks in the DCI.

As an example, the terminal device may determine the maximum number of actually schedulable transport blocks in the DCI directly according to the maximum number of supported schedulable transport blocks, the maximum value of the channel rank and/or the number of transport layers.

As another example, the terminal device may determine, according to the correspondence between the number of transmission layers and the codeword shown in table 1, the number of transmission blocks included in the shared channel when the number of transmission layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers. Further, the terminal device may determine the maximum number of the actually schedulable transport blocks in the DCI according to the number of the transport blocks included in the shared channel and the maximum value of the transport blocks supported for scheduling.

The following describes in detail the determination of the maximum number of transport blocks that can actually be scheduled in DCI by the terminal device.

For convenience of description, the maximum number of actually schedulable transport blocks in the DCI is referred to as a third number, the number of transport blocks included in the shared channel is referred to as a second number when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers, and the maximum number of transport blocks that can support scheduling in the first signaling is referred to as a first number. Taking the NR system as an example, the first number, the second number, and the third number may be respectively 1 or 2.

Alternatively, the terminal device may determine that the third number is the maximum of the second number and the first number.

For example, when the first number is 2 and the second number is 1, or the first number is 1 and the second number is 2, or the first number is 2 and the second number is 2, the terminal device may determine that the third number is 2. When the third number is 2, the DCI sent by the network device to the terminal device includes 2 sets of information fields, and each set of information fields in the 2 sets of information fields is used to indicate one transport block scheduling information.

For another example, when the first number is 1 and the second number is 1, the terminal device may determine that the third number is 1. When the third number is 1, it indicates that the DCI sent by the network device to the terminal device has only 1 set of information fields, where the set of information fields is used to indicate one transport block scheduling information.

Optionally, the terminal device may also determine that the third number is the minimum value of the second number and the first number.

For example, when the first number is 2 and the second number is 1, or the first number is 1 and the second number is 2, or the first number is 1 and the second number is 1, the terminal device may determine that the third number is 1. When the third number is 1, it indicates that the DCI sent by the network device to the terminal device has only 1 set of information fields, where the set of information fields is used to indicate one transport block scheduling information.

For another example, when the first number is 2 and the second number is 2, the terminal device may determine that the third number is 2. When the third number is 2, the DCI sent by the network device to the terminal device includes 2 sets of information fields, and each set of information fields in the 2 sets of information fields is used to indicate one transport block scheduling information.

In addition, the terminal device may also determine the third number to be an average of the second number and the first number.

According to the technical scheme provided by the embodiment of the application, under the condition that the first signaling and the second signaling are not matched, namely under the condition that the maximum number of the transmission blocks indicated by the first signaling and the second signaling are not consistent, a mode of sending the DCI by determining the maximum number of the transmission blocks which can be actually dispatched in the DCI is provided, and good communication between the terminal equipment and the network equipment can be realized.

When the terminal device determines that the maximum number of transport blocks that can be actually scheduled in the DCI is the third number, the DCI transmitted by the network device may be received according to the third number. Further, the terminal device may receive the second PDSCH transmitted by the network device, and transmit an ACK/NACK feedback message corresponding to the second PDSCH to the network device according to the group number of information fields and/or the type of information fields in the DCI, where the bit number of the ACK/NACK feedback message is equal to a third number, that is, the bit number of the ACK/NACK feedback message is equal to the number of actually schedulable transport blocks in the DCI, or it can be said that the bit number of the ACK/NACK feedback message is equal to the group number of information fields used for indicating the transport block scheduling information in the DCI.

Optionally, in step 220, the terminal device may not receive the DCI according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers.

For example, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of supported scheduled transmission blocks is greater than a second threshold, the terminal device receives the DCI. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than the first threshold and the maximum number of the transmission blocks supported for scheduling is less than or equal to the second threshold, the terminal device does not receive the DCI.

Optionally, in step 220, the terminal device may receive DCI according to the maximum number of supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers.

For example, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of supported scheduled transmission blocks is less than or equal to a second threshold, the terminal device receives the DCI. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to the first threshold and the maximum number of the transmission blocks supporting scheduling is greater than or equal to the second threshold, the terminal device receives the DCI.

The DCI can be used for scheduling shared channel transmission, and when the number of transmission layers used for transmitting the shared channel is equal to a first threshold value, the number of transmission blocks included in the shared channel is equal to a second threshold value.

Optionally, when the first threshold is 4, the second threshold is 1; and/or, when the first threshold is 8, the second threshold is 2.

Taking table 1 as an example, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to 4, and the maximum number of transmission blocks for supported scheduling is 1, the terminal device receives DCI. Or, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to 8, and the maximum number of supported scheduled transmission blocks is equal to 1, the terminal device receives the DCI. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than 4 and less than or equal to 8, and the maximum number of transmission blocks supporting scheduling is equal to 2, the terminal device receives the DCI.

When the maximum value of the channel rank and/or the number of transmission layers is less than or equal to 4 and the maximum number of the supported scheduling transmission blocks is 2, or when the maximum value of the channel rank and/or the number of transmission layers is greater than 4 and less than or equal to 8 and the maximum number of the supported scheduling transmission blocks is 1, the terminal device may not receive the DCI sent by the network device.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than 5 and the maximum number of transmission blocks supported for scheduling is 2, the terminal device receives the DCI. Or, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to 8, and the maximum number of supported scheduled transmission blocks is equal to 1, the terminal device receives the DCI. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to 5 and less than or equal to 8, and the maximum number of supported scheduled transport blocks is equal to 2, the terminal device receives the DCI.

When the maximum value of the channel rank and/or the number of transmission layers is less than 5 and the maximum number of the supported scheduling transport blocks is 1, or when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to 5 and less than or equal to 8 and the maximum number of the supported scheduling transport blocks is 1, the terminal device may not receive the DCI sent by the network device.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold, the terminal device does not expect that the maximum number of the transmission blocks supporting scheduling is greater than or equal to a second threshold. Or, when the maximum number of the supported scheduled transport blocks is greater than or equal to the second threshold, the terminal device does not expect that the maximum value of the channel rank and/or the number of transport layers is less than or equal to the first threshold. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to the first threshold, the terminal device does not expect that the maximum number of the transmission blocks supporting the scheduling is less than or equal to the second threshold. Or, when the maximum number of the supported scheduled transport blocks is less than or equal to the second threshold, the terminal device does not expect that the maximum value of the channel rank and/or the number of transport layers is greater than or equal to the first threshold.

The first threshold value is 4, and the second threshold value is 1. For convenience of description, it is assumed that the maximum value of the channel rank and/or the number of transmission layers is a first value, the maximum number of supported scheduled transmission blocks is a second value, and when the first value is less than or equal to 4, the second value is not expected to be greater than 1 by the terminal device. Similarly, when the second value is less than or equal to 1, the terminal device does not expect the second value to be greater than 4.

That is, when the first value is less than or equal to 4 and the second value is 2, or when the first value is greater than 4 and less than or equal to 8 and the second value is 1, the terminal device may determine that the first signaling and the second signaling are in an error configuration, and the terminal device may not receive the DCI transmitted by the network device. Or, the terminal device may not perform data transmission scheduled by the DCI when determining that the first signaling and the second signaling are in an incorrect configuration.

When the first value is less than or equal to 4 and the second value is 1, or when the first value is greater than 4 and less than or equal to 8 and the second value is 2, the terminal device may determine that the first signaling and the second signaling are correctly configured. The terminal device may receive the DCI transmitted by the network device and perform data scheduling indicated by the DCI.

Alternatively, the terminal device may determine, according to the correspondence between the number of transmission layers and the codeword shown in table 1, the number of transmission blocks included in the shared channel when the number of transmission layers used by the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers. And further determining whether to receive the DCI according to the number of the transmission blocks included in the shared channel and the maximum number of the transmission blocks supporting scheduling.

Specifically, when the number of transport blocks included in the shared channel is equal to the maximum number of supported scheduled transport blocks, the terminal apparatus receives DCI. When the number of transport blocks included in the shared channel is not equal to the maximum number of supported scheduled transport blocks, the terminal device may not receive the DCI.

When the maximum value of the channel rank and/or the number of transmission layers is less than or equal to the first threshold and the maximum number of the supported scheduled transmission blocks is less than or equal to the second threshold, or when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to the first threshold and the maximum number of the supported scheduled transmission blocks is greater than or equal to the second threshold, the terminal device may determine that the maximum number of the actually schedulable transmission blocks in the DCI is equal to the maximum number of the supported scheduled transmission blocks. That is, the terminal device may determine that at least one set of information fields is included in the DCI, the number of sets of the at least one set of information fields is equal to the maximum number of transport blocks supported for scheduling in the first signaling, and each set of information fields in the at least one set of information fields is respectively used for indicating scheduling information of one transport block.

For example, when the maximum number of transport blocks supported by the first signaling for scheduling is 2, and the maximum value of the channel rank and/or the number of transport layers is greater than 4 and less than or equal to 8, it indicates that the maximum number of actually schedulable transport blocks in the DCI is 2, that is, the DCI sent by the network device to the terminal device includes two sets of information fields, and each set of information fields is used for indicating scheduling information of one transport block. Namely, the DCI sent by the network device to the terminal device includes a first group information field and a second group information field, where the first group information field is used to indicate the scheduling information of the first transport block, and the second group information field is used to indicate the scheduling information of the second transport block.

For another example, when the maximum number of transport blocks supported by the first signaling for scheduling is 1, and the maximum value of the channel rank and/or the number of transport layers is less than or equal to 4, it indicates that the maximum number of actually schedulable transport blocks in the DCI is 2, that is, the DCI sent by the network device to the terminal device includes a set of information fields, where the set of information fields is used to indicate scheduling information of one transport block.

According to the technical scheme provided by the embodiment of the application, under the condition that the first signaling and the second signaling are not matched, namely under the condition that the maximum number of the transmission blocks indicated by the first signaling and the second signaling are not consistent, the terminal equipment can not accept the scheduling instruction of the network equipment. Under the condition that the first signaling and the second signaling are correctly matched, namely under the condition that the maximum number of the transmission blocks indicated by the first signaling and the second signaling is consistent, the terminal equipment receives the instructions of scheduling and the like of the network equipment, so that good communication between the terminal equipment and the network equipment can be ensured.

Alternatively, the way in which the terminal device receives DCI may be received as described above. Specifically, the terminal device may determine the number of groups of information fields and/or the type of the information fields included in the DCI according to the maximum number of supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transmission layers. The terminal device may then determine the bit length of the DCI according to the number of groups of information fields and/or the type of information fields, so as to correctly receive the DCI.

For example, when the maximum number of transport blocks indicated by the first signaling and the second signaling is both 1, it indicates that a set of information fields is included in the DCI, and the type of the information fields is a first type, i.e., the information fields are used to indicate scheduling information of the transport blocks. When the maximum number of the transport blocks indicated by the first signaling and the second signaling is 2, it indicates that two sets of information fields are included in the DCI, and the type of the two sets of information fields is the first type, that is, each set of information fields in the two sets of information fields is respectively used to indicate scheduling information of one transport block.

It should be noted that, in the above-described scheme, the maximum number of transport blocks supported for scheduling in the DCI may be understood as the maximum number of transport blocks capable of being scheduled in the DCI indicated by the first signaling. The maximum number of transport blocks that can be actually scheduled in the DCI can be understood as the maximum number of transport blocks that can be scheduled in the DCI transmitted by the network device to the terminal device. The scheduling information of the transport block refers to independent scheduling information of the transport block. The first type of information domain comprises at least one of the following information domains: MCS information field, NDI information field, RV information field, etc.

Fig. 3 is a schematic flowchart of a method 300 for transmitting downlink control information according to an embodiment of the present application. The method 300 may alternatively be applied to the system shown in fig. 1, but is not limited thereto. As shown in fig. 3, the method 300 includes at least some of the following.

In step 310, a terminal device receives a first signaling and a second signaling, where the first signaling is used to indicate a maximum number of transmission blocks that are scheduled and supported by downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transmission layers that are supported by the terminal device for feeding back channel quality information;

in step 320, the terminal device determines whether to receive the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the maximum value of the number of transmission layers.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold, the downlink control information is received. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold and the maximum number of the transmission blocks supporting scheduling is greater than a second threshold, receiving the downlink control information.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold, the downlink control information is not received. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold and the maximum number of the transmission blocks supported for scheduling is less than or equal to a second threshold, not receiving the downlink control information.

Optionally, the DCI may be used to schedule transmission of a shared channel, and when the number of transmission layers used for transmitting the shared channel is equal to the first threshold, the number of transmission blocks included in the shared channel is equal to the second threshold.

Optionally, when the first threshold is 4, the second threshold is 1; and/or, when the first threshold is 8, the second threshold is 2.

Fig. 4 is a schematic flow chart of a method 400 for transmitting downlink control information according to an embodiment of the present application. The method 400 may alternatively be applied to the system shown in fig. 1, but is not limited thereto. As shown in fig. 4, the method 400 includes at least some of the following.

In step 410, the network device sends a first signaling and a second signaling, where the first signaling is used to indicate a maximum number of transmission blocks supported by scheduling in the downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transmission layers supported by the terminal device for feeding back the channel quality information. The first signaling may be higher layer signaling, and the second signaling may be higher layer signaling. The maximum number of supported scheduled transport blocks may be 1 or 2, and the maximum value of the channel rank and/or the number of transport layers may be a positive integer greater than or equal to 1 and less than or equal to 8.

In step 420, the network device sends downlink control information according to the maximum number of the transmission blocks, the channel rank, and/or the maximum value of the number of transmission layers that are supported for scheduling.

Based on the above scheme, the network device sends the downlink control information according to the maximum number of the scheduled transport blocks supported in the downlink control information indicated by the first signaling and the maximum value of the channel rank and/or the number of transport layers supported by the terminal device feeding back the channel quality information indicated by the second signaling, so that the transmission mode (e.g., MIMO transmission mode) dynamically indicated by the downlink control information depends on the channel state information fed back by the terminal device and the setting of the downlink control information, and the semi-static configuration of the transmission mode is avoided, so that multiple transmission modes can be flexibly supported in the aspect of setting of the downlink control information, and the flexibility of the communication system is improved.

Optionally, in step 420, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to the first threshold and the maximum number of supported scheduled transport blocks is less than or equal to the second threshold, the network device sends the DCI. And when the maximum value of the channel rank and/or the number of the transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is larger than a second threshold value, the network equipment sends the DCI.

Optionally, in step 420, the network device may not be limited to the information indicated by the first signaling and the second signaling, and may send the DCI.

The following describes a manner in which the network device transmits DCI.

Optionally, in step 420, the network device may determine, according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transmission layers, a condition of an information field included in the DCI, where the condition of the information field may be, for example, the number of groups of the information field, the type of the information field, and/or other information of the information field. Further, the network device may transmit DCI according to the situation of the information domain.

Taking the case of the information field as the group number of the information field and/or the type of the information field as an example, the network device may determine the bit length of the DCI according to the group number of the information field and/or the type of the information field, so as to transmit the DCI.

It should be noted that the type of the information field may be divided according to the information indicated by the information field.

For convenience of description, the number of transmission blocks included in the shared channel is referred to as a second number, and the maximum number of transmission blocks that can support scheduling in the first signaling is referred to as a first number, where the number of transmission layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers.

Specifically, the network device may determine that the number of sets of information fields included in the downlink control information is equal to the first number.

When the first number is greater than the second number, the first number of group information fields includes the second number of group information fields and other group information fields. The type of the second quantity group information field is a first type, and the first type information field is used for indicating scheduling information of the transmission block. The type of the other group information field is a second type, and the second type information field is used for indicating the first information. The first information is different from the transport block scheduling information, i.e., the second type information field is used to indicate information unrelated to the scheduling information of the transport block. The first information may include at least one of the following information: service class, CBG information and related information thereof, BWP information and related information thereof, etc.

It should be understood that the number of the other groups of information fields may be the difference between the first number and the second number, or may be smaller than the difference between the first number and the second number.

In the technical solution provided in the embodiment of the present application, when the maximum number of transport blocks indicated by the first signaling is greater than the maximum number of transport blocks indicated by the second signaling, the second number group information field in the DCI may be used to indicate transport block scheduling information, and the other group information fields may be used to indicate other information unrelated to transport block scheduling, so that other information may be transmitted without increasing signaling, signaling overhead may be saved, and the purpose of reusing the DCI information field may be achieved.

And when the first number is equal to the second number, the number of the groups of the information fields in the DCI is equal to the first number of groups, the type of the first number of groups of information fields is a first type, and each group of information fields in the first number of groups of information fields is respectively used for indicating one transmission block scheduling information. The network device may determine the bit length of the DCI according to the group number of the information fields in the DCI and/or the type of the information fields, so as to transmit the DCI.

When the first number is less than the second number, the number of sets of information fields in the DCI is equal to the first number. The type of the first quantity group information field is a first type, and each group of information fields in the first quantity group information field is respectively used for indicating one transmission block scheduling information. The network device may determine the bit length of the DCI according to the group number of the information fields in the DCI and/or the type of the information fields, so as to transmit the DCI.

In addition, the network device may also send the first PDSCH to the terminal device, and receive ACK/NACK feedback information corresponding to the first PDSCH sent by the terminal device according to the group number of the information fields and/or the type of the information fields in the DCI. The number of bits of the ACK/NACK feedback information is equal to the minimum of the second number and the first number, that is, the number of bits of the ACK/NACK feedback information is equal to the number of groups of the first type information field in the DCI, that is, the number of bits of the ACK/NACK feedback information is equal to the number of groups of the information field indicating the transport block scheduling information in the DCI.

For example, when the first number is greater than the second number, the number of bits of the ACK/NACK feedback information is equal to the second number. The first number is 2 and the second number is 1. The DCI includes 2 sets of information fields, where one set of information fields is used to indicate scheduling information of one transport block and another set of information fields is used to indicate first information unrelated to the scheduling information of the transport block. The network device may send the second PDSCH to the terminal device, and determine that ACK/NACK feedback information corresponding to the second PDSCH is 1 bit according to the second number being 1. And then receiving ACK/NACK feedback information corresponding to the second PDSCH according to the ACK/NACK feedback information being 1 bit.

Optionally, in step 420, the network device may determine the number of groups of information fields and/or the type of the information fields included in the DCI according to the maximum number of supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transmission layers. The network device may then transmit the DCI according to the number of groups of the information fields and/or the type of information field.

Optionally, the network device may determine the maximum number of actually schedulable transport blocks in the DCI according to the maximum number of supported schedulable transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers, and send the DCI according to the maximum number of actually schedulable transport blocks in the DCI.

The method for determining the maximum number of the actually schedulable transmission blocks in the DCI by the network device is not specifically limited in the embodiment of the present application.

As an example, the network device may determine the maximum number of transport blocks that can be actually scheduled in the DCI directly according to the maximum number of supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers.

As another example, the network device may determine, according to the correspondence between the number of transmission layers and the codeword shown in table 1, the number of transmission blocks included in the shared channel when the number of transmission layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers. And further determining the maximum number of the transmission blocks which can be actually scheduled in the DCI according to the number of the transmission blocks contained in the shared channel and the maximum value of the transmission blocks which support scheduling.

The following describes in detail the network device determining the maximum number of transport blocks that can actually be scheduled in DCI.

For convenience of description, the maximum number of actually schedulable transport blocks in the DCI is referred to as a third number, the number of transport blocks included in the shared channel is referred to as a second number, and the maximum number of the schedulable transport blocks in the first signaling is referred to as a first number when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers. Taking the NR system as an example, the first number, the second number, and the third number may be respectively 1 or 2.

Optionally, the network device may determine that the third number is the maximum of the second number and the first number.

For example, the first number is 2, and when the second number is 1, or the first number is 1 and the second number is 2, or the first number is 2 and the second number is 2, the network device may determine that the third number is 2. When the third number is 2, the DCI sent by the network device to the terminal device includes 2 sets of information fields, and each set of information fields in the 2 sets of information fields is used to indicate one transport block scheduling information.

For another example, when the first number is 1 and the second number is 1, the network device may determine that the third number is 1. When the third number is 1, it indicates that the DCI sent by the network device to the terminal device has only 1 set of information fields, where the set of information fields is used to indicate one transport block scheduling information.

Optionally, the network device may also determine that the third number is the minimum of the second number and the first number.

For example, when the first number is 2 and the second number is 1, or the first number is 1 and the second number is 2, or the first number is 1 and the second number is 1, the network device may determine that the third number is 1. When the third number is 1, it indicates that the DCI sent by the network device to the terminal device has only 1 set of information fields, where the set of information fields is used to indicate one transport block scheduling information.

For another example, when the first number is 2 and the second number is 2, the network device may determine that the third number is 2. When the third number is 2, the DCI sent by the network device to the terminal device includes 2 sets of information fields, and each set of information fields in the 2 sets of information fields is used to indicate one transport block scheduling information.

In addition, the network device may also determine the third number to be an average of the second number and the first number.

According to the technical scheme provided by the embodiment of the application, under the condition that the first signaling and the second signaling are not matched, namely under the condition that the maximum number of the transmission blocks indicated by the first signaling and the second signaling are not consistent, a mode of sending the DCI by determining the maximum number of the transmission blocks which can be actually dispatched in the DCI is provided, and good communication between the terminal equipment and the network equipment can be realized.

When the network device determines that the maximum number of transport blocks that can be actually scheduled in the DCI is the third number, the DCI may be transmitted to the terminal device according to the third number. And further sending the first PDSCH to the terminal equipment, and receiving an ACK/NACK feedback message corresponding to the first PDSCH sent by the terminal equipment according to the group number of the information domains and/or the type of the information domains in the DCI, wherein the bit number of the ACK/NACK feedback message is equal to the third number. Specifically, the network device may determine, according to the third amount, the bit number of the ACK/NACK feedback message corresponding to the first PDSCH, and then receive, according to the bit number of the ACK/NACK feedback message corresponding to the first PDSCH, the ACK/NACK feedback message sent by the terminal device.

Optionally, in step 420, the network device may not transmit the DCI according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers.

For example, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of supported scheduled transport blocks is greater than a second threshold, the network device transmits the DCI. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than the first threshold and the maximum number of the transmission blocks supported for scheduling is less than or equal to the second threshold, the network device does not send the DCI.

Optionally, in step 420, the network device may transmit DCI according to the maximum number of supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers.

For example, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of supported scheduled transport blocks is less than or equal to a second threshold, the network device transmits the DCI. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to the first threshold and the maximum number of the transmission blocks supporting scheduling is greater than or equal to the second threshold, the network device sends the DCI.

The DCI can be used for scheduling shared channel transmission, and when the number of transmission layers used for transmitting the shared channel is equal to a first threshold value, the number of transmission blocks included in the shared channel is equal to a second threshold value.

Optionally, when the first threshold is 4, the second threshold is 1; and/or, when the first threshold is 8, the second threshold is 2.

Taking table 1 as an example, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to 4, and the maximum number of transmission blocks supporting scheduling is 1, the network device sends DCI to the terminal device. Or, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to 8, and the maximum number of the transmission blocks supporting scheduling is equal to 1, the network device sends the DCI to the terminal device. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than 4 and less than or equal to 8, and the maximum number of transmission blocks supporting scheduling is equal to 2, the network device sends the DCI to the terminal device. When the number of transmission layers used for transmitting the shared channel is equal to 4, the number of transmission blocks included in the shared channel is equal to 1.

When the maximum value of the channel rank and/or the number of transmission layers is less than or equal to 4 and the maximum number of supported scheduled transport blocks is 2, or when the maximum value of the channel rank and/or the number of transmission layers is greater than 4 and less than or equal to 8 and the maximum number of supported scheduled transport blocks is 2, the network device may not send DCI to the terminal device.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than 5 and the maximum number of transmission blocks supported for scheduling is 2, the network device sends DCI to the terminal device. Or, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to 8, and the maximum number of the transmission blocks supporting scheduling is equal to 1, the network device sends the DCI to the terminal device. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to 5 and less than or equal to 8, and the maximum number of supported scheduled transport blocks is equal to 2, the network device sends the DCI to the terminal device.

When the maximum value of the channel rank and/or the number of transmission layers is less than 5 and the maximum number of the supported scheduling transport blocks is 1, or when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to 5 and less than or equal to 8 and the maximum number of the supported scheduling transport blocks is 1, the network device may not send the DCI to the terminal device.

Alternatively, the network device may determine, according to the correspondence between the number of transmission layers and the codeword shown in table 1, the number of transmission blocks included in the shared channel when the number of transmission layers used by the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers. And further determining whether to transmit the DCI according to the number of the transmission blocks included in the shared channel and the maximum number of the transmission blocks supporting scheduling.

Specifically, when the number of transport blocks included in the shared channel is equal to the maximum number of supported scheduled transport blocks, the network device transmits DCI. When the number of transport blocks included in the shared channel is not equal to the maximum number of supported scheduled transport blocks, the network device may not transmit the DCI.

When the maximum value of the channel rank and/or the number of transmission layers is less than or equal to the first threshold and the maximum number of the supported scheduled transmission blocks is less than or equal to the second threshold, or when the maximum value of the channel rank and/or the number of transmission layers is greater than or equal to the first threshold and the maximum number of the supported scheduled transmission blocks is greater than or equal to the second threshold, the network device may determine that the maximum number of the actually schedulable transmission blocks in the DCI is equal to the maximum number of the supported scheduled transmission blocks. That is, the network device may determine that at least one set of information fields is included in the DCI, the number of sets of the at least one set of information fields is equal to the maximum number of transport blocks supported for scheduling in the first signaling, and each set of information fields in the at least one set of information fields is respectively used for indicating scheduling information of one transport block.

For example, when the maximum number of transport blocks supported by the first signaling for scheduling is 2, and the maximum value of the channel rank and/or the number of transport layers is greater than 4 and less than or equal to 8, it indicates that the DCI sent by the network device to the terminal device includes two sets of information fields, and each set of information fields is used to indicate scheduling information of one transport block. Namely, the DCI sent by the network device to the terminal device includes a first group information field and a second group information field, where the first group information field is used to indicate the scheduling information of the first transport block, and the second group information field is used to indicate the scheduling information of the second transport block.

For another example, when the maximum number of transport blocks supported by the first signaling is 1, and the maximum value of the channel rank and/or the number of transport layers is greater than or equal to 4, it indicates that the DCI sent by the network device to the terminal device includes a group of information fields, where the group of information fields is used to indicate scheduling information of one transport block.

According to the technical scheme provided by the embodiment of the application, under the condition that the first signaling and the second signaling are not matched, namely under the condition that the maximum number of the transmission blocks indicated by the first signaling and the second signaling are not consistent, the network equipment does not send DCI to the terminal equipment. Under the condition that the first signaling and the second signaling are correctly matched, namely under the condition that the maximum number of the transmission blocks indicated by the first signaling and the second signaling is consistent, the network equipment and the terminal equipment carry out normal communication, so that good communication between the terminal equipment and the network equipment can be ensured.

Alternatively, the manner in which the network device transmits the DCI may be received as described above. Specifically, the network device may determine the number of groups of information fields and/or the type of the information fields included in the DCI according to the maximum number of supported scheduled transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transmission layers. The network device may then transmit the DCI according to the number of groups of information fields and/or the type of information field.

For example, when the maximum number of transport blocks indicated by the first signaling and the second signaling is both 1, it indicates that a set of information fields is included in the DCI, and the type of the information fields is a first type, i.e., the information fields are used to indicate scheduling information of the transport blocks. When the maximum number of the transport blocks indicated by the first signaling and the second signaling is 2, it indicates that two sets of information fields are included in the DCI, and the type of the two sets of information fields is the first type, that is, each set of information fields in the two sets of information fields is respectively used to indicate scheduling information of one transport block.

It should be noted that, in the above-described scheme, the maximum number of transport blocks supported for scheduling in the DCI may be understood as the maximum number of transport blocks capable of being scheduled in the DCI indicated in the first signaling. The maximum number of transport blocks that can be actually scheduled in the DCI can be understood as the maximum number of transport blocks that can be scheduled in the DCI transmitted by the network device to the terminal device. The transport block scheduling information refers to independent scheduling information of the transport block. The first type of information domain comprises at least one of the following information domains: MCS information field, NDI information field, RV information field, etc.

Having described the method for transmitting downlink control information in detail in the foregoing, an apparatus according to an embodiment of the present application will be described below with reference to fig. 4 to 8, and technical features described in the method embodiment are applicable to the following apparatus embodiments.

Fig. 5 is a schematic flowchart of a method 500 for transmitting downlink control information according to an embodiment of the present application. The method 500 may alternatively be applied to the system shown in fig. 1, but is not limited thereto. As shown in fig. 5, the method 500 includes at least some of the following.

In step 510, the network device sends a first signaling and a second signaling, where the first signaling is used to indicate a maximum number of transmission blocks supported by scheduling in the downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transmission layers supported by the terminal device for feeding back channel quality information. The first signaling may be higher layer signaling, and the second signaling may be higher layer signaling. The maximum number of supported scheduled transport blocks may be 1 or 2, and the maximum value of the channel rank and/or the number of transport layers may be a positive integer greater than or equal to 1 and less than or equal to 8.

In step 520, the network device determines whether to send downlink control information according to the maximum number of the transmission blocks, the channel rank, and/or the maximum value of the number of transmission layers that support scheduling.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold, the downlink control information is sent. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold, sending the downlink control information.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold, the downlink control information is not sent. Or, when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold and the maximum number of the transmission blocks supported for scheduling is less than or equal to a second threshold, not sending the downlink control information.

Optionally, when the number of transmission layers used for transmitting the shared channel is equal to the first threshold, the number of transmission blocks included in the shared channel is equal to the second threshold.

Optionally, when the first threshold is 4, the second threshold is 1; and/or, when the first threshold is 8, the second threshold is 2.

Fig. 6 is a schematic block diagram of a terminal device 600 provided in an embodiment of the present application. As shown in fig. 6, the terminal apparatus 600 includes a communication unit 610. Wherein:

a communication unit 610, configured to receive a first signaling and receive a second signaling, where the first signaling is used to indicate a maximum number of scheduling transport blocks supported in downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transport layers supported by the terminal device for feeding back channel quality information.

The communication unit 610 is further configured to receive the downlink control information according to the maximum number of the supported scheduling transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers.

Optionally, the communication unit 610 is specifically configured to: and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value.

Optionally, the communication unit 610 is specifically configured to: and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value.

Optionally, the terminal device further includes a processing unit, configured to determine, according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers, the number of groups of information fields and/or the type of the information fields included in the downlink control information; the communication unit 610 is specifically configured to: and receiving the downlink control information according to the group number of the information domains and/or the types of the information domains.

Optionally, the number of sets of information fields included in the downlink control information is equal to a first number, the first number set of information fields includes a second number set of information fields and other sets of information fields, the type of the second number set of information fields is a first type, the type of the other sets of information fields is a second type, the first type of information field is used to indicate scheduling information of a transmission block, the second type of information field is used to indicate first information, the first information is different from the scheduling information of the transmission block, the first number is equal to the maximum number of transmission blocks supporting scheduling, and the second number is the number of transmission blocks included in a shared channel when the number of transmission layers used by the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers.

Optionally, the first information includes at least one of the following information: service class, CBG information, BWP information.

Optionally, the communication unit 610 is further configured to: receiving a first PDSCH; and sending ACK/NACK feedback information of the first PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the second quantity.

Optionally, the maximum number of actually schedulable transport blocks in the downlink control information is equal to a third number, where the third number is equal to a maximum value or a minimum value of the maximum number of supported scheduling transport blocks and a second number, where the second number is the number of transport blocks included in the shared channel when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers.

Optionally, the number of sets of information fields included in the downlink control information is equal to the third number, where the type of the third number of sets of information fields is a first type, and the first type of information field is used to indicate scheduling information of a transport block.

Optionally, the communication unit 610 is further configured to: receiving a second PDSCH; transmitting ACK/NACK feedback information of the second PDSCH, the number of bits of the ACK/NACK feedback information being equal to the third number.

Optionally, when the number of transmission layers used for transmitting the shared channel is equal to the first threshold, the number of transmission blocks included in the shared channel is equal to the second threshold.

Optionally, when the first threshold is 4, the second threshold is 1; and/or, when the first threshold is 8, the second threshold is 2.

Optionally, the maximum number of actually schedulable transport blocks in the downlink control information is equal to said maximum number of supported scheduling transport blocks.

Optionally, the number of groups of information fields included in the downlink control information is equal to a first number, the type of the first number of groups of information fields is a first type, and the first type of information fields is used to indicate scheduling information of a transport block, where the first number is equal to the maximum number of transport blocks supported for scheduling.

Optionally, the first type of information domain comprises at least one of the following information domains: NDI information field, MCS information field, RV information field.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of the transmission blocks supporting scheduling is greater than a second threshold, the downlink control information is not received.

Optionally, when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold and the maximum number of the transmission blocks supporting scheduling is greater than a second threshold, the downlink control information is not received.

Fig. 7 is a schematic block diagram of a terminal device 700 provided in an embodiment of the present application. As shown in fig. 7, the terminal device 700 includes a communication unit 710 and a processing unit 720. Wherein:

a communication unit 710, configured to receive a first signaling and receive a second signaling, where the first signaling is used to indicate a maximum number of scheduling transport blocks supported in downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transport layers supported by the terminal device for feeding back channel quality information.

The processing unit 720 is further configured to determine whether to receive the downlink control information according to the maximum number of the supported scheduling transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers.

Optionally, the processing unit 720 is specifically configured to: and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value.

Optionally, the processing unit 720 is specifically configured to: and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value.

Optionally, the processing unit 720 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value, not receiving the downlink control information.

Optionally, the processing unit 720 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is smaller than or equal to a second threshold value, not receiving the downlink control information.

Optionally, when the number of transmission layers used for transmitting the shared channel is equal to the first threshold, the number of transmission blocks included in the shared channel is equal to the second threshold.

Optionally, when the first threshold is 4, the second threshold is 1; and/or, when the first threshold is 8, the second threshold is 2.

Fig. 8 is a schematic block diagram of a network device 800 according to an embodiment of the present application. As shown in fig. 8, the network device 800 includes a communication unit 810. Wherein:

the communication unit 810: the first signaling is used for indicating the maximum number of the transmission blocks supported by scheduling in the downlink control information, and the second signaling is used for indicating the maximum value of the channel rank and/or the number of transmission layers supported by the channel quality information fed back by the terminal equipment.

The communication unit 810 is further configured to send the downlink control information according to the maximum number of the supported scheduling transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers.

Optionally, the communication unit 810 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value, sending the downlink control information.

Optionally, the communication unit 810 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is larger than a second threshold value, sending the downlink control information.

Optionally, the network device further includes a processing unit, configured to determine, according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers, the number of groups of information fields and/or the type of the information fields included in the downlink control information; the communication unit 810 is specifically configured to: and sending the downlink control information according to the group number of the information domains and/or the types of the information domains.

Optionally, the number of sets of information fields included in the downlink control information is equal to a first number, the first number set of information fields includes a second number set of information fields and other sets of information fields, the type of the second number set of information fields is a first type, the type of the other sets of information fields is a second type, the first type of information field is used to indicate scheduling information of a transmission block, the second type of information field is used to indicate first information, the first information is different from the scheduling information of the transmission block, the first number is equal to the maximum number of transmission blocks supporting scheduling, and the second number is the number of transmission blocks included in a shared channel when the number of transmission layers used by the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers.

Optionally, the first information includes at least one of the following information: service class, CBG information, BWP information.

Optionally, the communication unit 810 is further configured to: transmitting a first PDSCH; and receiving ACK/NACK feedback information of the terminal equipment on the first PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the second number.

Optionally, the maximum number of actually schedulable transport blocks in the downlink control information is equal to a third number, where the third number is equal to a maximum value or a minimum value of the maximum number of supported scheduling transport blocks and a second number, where the second number is the number of transport blocks included in the shared channel when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers.

Optionally, the number of sets of information fields included in the downlink control information is equal to a third number, where the type of the third number of sets of information fields is a first type, and the first type of information field is used to indicate scheduling information of a transport block.

Optionally, the communication unit 810 is further configured to: transmitting a second PDSCH; and receiving ACK/NACK feedback information of the terminal equipment on the second PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the third number.

Optionally, when the number of transmission layers used for transmitting the shared channel is equal to the first threshold, the number of transmission blocks included in the shared channel is equal to the second threshold.

Optionally, when the first threshold is 4, the second threshold is 1; and/or, when the first threshold is 8, the second threshold is 2.

Optionally, the maximum number of actually schedulable transport blocks in the downlink control information is equal to said maximum number of supported scheduling transport blocks.

Optionally, the number of groups of information fields included in the downlink control information is equal to a first number, the type of the first number of groups of information fields is a first type, and the first type of information fields is used to indicate scheduling information of a transport block, where the first number is equal to the maximum number of transport blocks supported for scheduling.

Optionally, the first type of information domain comprises at least one of the following information domains: NDI information field, MCS information field, RV information field.

Optionally, the processing unit 820 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value, not sending the downlink control information.

Optionally, the processing unit 820 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is smaller than or equal to a second threshold value, not sending the downlink control information.

Fig. 9 is a schematic block diagram of a network device 900 according to an embodiment of the present application. As shown in fig. 9, the network device 900 includes a communication unit 910 and a processing unit 920. Wherein:

the communication unit 910: the first signaling is used for indicating the maximum number of the transmission blocks supported by scheduling in the downlink control information, and the second signaling is used for indicating the maximum value of the channel rank and/or the number of transmission layers supported by the channel quality information fed back by the terminal equipment.

The processing unit 920 is further configured to determine whether to send the downlink control information according to the maximum number of the supported scheduling transport blocks, the maximum value of the channel rank and/or the maximum value of the number of transport layers.

Optionally, the processing unit 920 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value, sending the downlink control information.

Optionally, the processing unit 920 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is larger than a second threshold value, sending the downlink control information.

Optionally, the processing unit 920 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value, not sending the downlink control information.

Optionally, the processing unit 920 is specifically configured to: and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is smaller than or equal to a second threshold value, not sending the downlink control information.

Optionally, when the number of transmission layers used for transmitting the shared channel is equal to the first threshold, the number of transmission blocks included in the shared channel is equal to the second threshold.

Optionally, when the first threshold is 4, the second threshold is 1; and/or, when the first threshold is 8, the second threshold is 2.

Fig. 10 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application. The communication device 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, the communication device 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, as shown in fig. 10, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 1030 may include a transmitter and a receiver, among others. The transceiver 1030 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 1000 may specifically be a network device in the embodiment of the present application, and the communication device 1000 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the communication device 1000 may specifically be a mobile terminal/terminal device in the embodiment of the present application, and the communication device 1000 may implement a corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Fig. 11 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1100 shown in fig. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 11, the chip 1100 may further include a memory 1120. From the memory 1120, the processor 1110 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 1120 may be a separate device from the processor 1110, or may be integrated into the processor 1110.

Optionally, the chip 1100 may also include an input interface 1130. The processor 1110 may control the input interface 1130 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 1100 may further include an output interface 1140. The processor 1110 may control the output interface 1140 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

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

Fig. 12 is a schematic block diagram of a communication system 1200 provided in an embodiment of the present application. As shown in fig. 12, the communication system 1200 includes a terminal device 1210 and a network device 1220.

The terminal device 1210 may be configured to implement corresponding functions implemented by the terminal device in the foregoing method, and the network device 1220 may be configured to implement corresponding functions implemented by the network device in the foregoing method, which is not described herein again for brevity.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

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

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program. Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity. Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions. Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity. Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program. Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again. Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

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

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

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

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

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

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (108)

1. A method for transmitting downlink control information, comprising:

   the method comprises the steps that terminal equipment receives a first signaling and a second signaling, wherein the first signaling is used for indicating the maximum number of scheduled transmission blocks supported by downlink control information, and the second signaling is used for indicating the maximum value of channel rank and/or the maximum value of the number of transmission layers supported by the terminal equipment for feeding back channel quality information;

   and the terminal equipment receives the downlink control information according to the maximum number of the transmission blocks supported to be scheduled, the maximum value of the channel rank and/or the maximum value of the transmission layer number.
2. The method of claim 1, wherein the receiving, by the terminal device, the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers comprises:

   and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value.
3. The method according to claim 1 or 2, wherein the receiving, by the terminal device, the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers comprises:

   and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value.
4. The method according to any of claims 1-3, wherein the receiving, by the terminal device, the downlink control information according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers comprises:

   the terminal equipment determines the group number of information domains and/or the type of the information domains included in the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the maximum value of the transmission layer number;

   and the terminal equipment receives the downlink control information according to the group number of the information domains and/or the types of the information domains.
5. The method according to any one of claims 1 to 4,

   the group number of information fields included in the downlink control information is equal to a first number, the first number group information field includes a second number group information field and other group information fields, the type of the second number group information field is a first type, the type of the other group information fields is a second type, the first type information field is used for indicating scheduling information of a transmission block, the second type information field is used for indicating first information, and the first information is different from the scheduling information of the transmission block,

   wherein the first number is equal to the maximum number of the transmission blocks of the supported scheduling, and the second number is the number of the transmission blocks included in the shared channel when the number of transmission layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers.
6. The method of claim 5,

   the first information includes at least one of the following information: service class, coding block group CBG information, bandwidth section BWP information.
7. The method of claim 5 or 6, further comprising:

   the terminal equipment receives a first Physical Downlink Shared Channel (PDSCH);

   and the terminal equipment sends Acknowledgement (ACK)/Negative Acknowledgement (NACK) feedback information of the first PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the second number.
8. The method according to any one of claims 1 to 4,

   the maximum number of actually schedulable transport blocks in the downlink control information is equal to a third number, which is equal to a maximum value or a minimum value of the maximum number of the transport blocks supported for scheduling and a second number, where the second number is the number of transport blocks included in the shared channel when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers.
9. The method of claim 8, wherein a number of sets of information fields included in the downlink control information is equal to the third number, wherein a type of the third number of sets of information fields is a first type, and the first type of information field is used for indicating scheduling information of a transport block.
10. The method according to claim 8 or 9, characterized in that the method further comprises:

    the terminal equipment receives a second PDSCH;

    and the terminal equipment sends the ACK/NACK feedback information of the second PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the third quantity.
11. A method according to claim 2 or 3, characterized in that when the number of transmission layers used for transmitting a shared channel is equal to said first threshold value, the number of transport blocks included in said shared channel is equal to said second threshold value.
12. The method of claim 11, wherein when the first threshold is 4, the second threshold is 1; and/or the presence of a gas in the gas,

    when the first threshold is 8, the second threshold is 2.
13. The method according to claim 11 or 12, wherein the maximum number of transport blocks that can actually be scheduled in the downlink control information is equal to the maximum number of supported scheduled transport blocks.
14. The method of claim 13,

    the number of groups of information fields included in the downlink control information is equal to a first number, the type of the first number of groups of information fields is a first type, and the first type of information fields is used for indicating scheduling information of transmission blocks, wherein the first number is equal to the maximum number of the transmission blocks which are supported to be scheduled.
15. The method according to any of claims 5, 9, 14, wherein the first type information field comprises at least one of the following information fields: the new data indicates NDI information field, modulation coding level MCS information field and redundancy version RV information field.
16. A method for transmitting downlink control information, comprising:

    the method comprises the steps that terminal equipment receives a first signaling and a second signaling, wherein the first signaling is used for indicating the maximum number of scheduled transmission blocks supported by downlink control information, and the second signaling is used for indicating the maximum value of channel rank and/or the maximum value of the number of transmission layers supported by the terminal equipment for feeding back channel quality information;

    and the terminal equipment determines whether to receive the downlink control information according to the maximum number of the transmission blocks supported to be scheduled, the maximum value of the channel rank and/or the maximum value of the transmission layer number.
17. The method of claim 16, wherein the determining, by the terminal device, whether to receive the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers comprises:

    and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value.
18. The method according to claim 16 or 17, wherein the determining, by the terminal device, whether to receive the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers comprises:

    and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value.
19. The method according to any of claims 16-18, wherein the determining, by the terminal device, whether to receive the downlink control information according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers comprises:

    and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value, not receiving the downlink control information.
20. The method according to any of claims 16-19, wherein the determining, by the terminal device, whether to receive the downlink control information according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers comprises:

    and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is smaller than or equal to a second threshold value, not receiving the downlink control information.
21. The method according to any of claims 17-20, wherein the number of transport blocks comprised in the shared channel is equal to the second threshold when the number of transport layers used for transmitting the shared channel is equal to the first threshold.
22. The method of claim 21, wherein when the first threshold is 4, the second threshold is 1; and/or the presence of a gas in the gas,

    when the first threshold is 8, the second threshold is 2.
23. A method for transmitting downlink control information, comprising:

    the network equipment sends a first signaling and a second signaling, wherein the first signaling is used for indicating the maximum number of transmission blocks scheduled by the downlink control information, and the second signaling is used for indicating the maximum value of a channel rank and/or a transmission layer number supported by the terminal equipment for feeding back the channel quality information;

    and the network equipment sends the downlink control information according to the maximum number of the transmission blocks supported to be scheduled, the maximum value of the channel rank and/or the maximum value of the transmission layer number.
24. The method of claim 23, wherein the network device sending the downlink control information according to the maximum number of the transport blocks supported for scheduling, the maximum value of the channel rank and/or the number of transport layers comprises:

    and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value, sending the downlink control information.
25. The method according to claim 23 or 24, wherein the network device sends the downlink control information according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers, and comprises:

    and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is larger than a second threshold value, sending the downlink control information.
26. The method according to any of claims 23-25, wherein the network device sending the downlink control information according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers comprises:

    the network device determines the group number of the information domains and/or the types of the information domains included in the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the maximum value of the transmission layer number;

    and the network equipment sends the downlink control information according to the group number of the information domains and/or the types of the information domains.
27. The method of any one of claims 23-26,

    the group number of information fields included in the downlink control information is equal to a first number, the first number group information field includes a second number group information field and other group information fields, the type of the second number group information field is a first type, the type of the other group information fields is a second type, the first type information field is used for indicating scheduling information of a transmission block, the second type information field is used for indicating first information, and the first information is different from the scheduling information of the transmission block,

    the first number is equal to the maximum number of the transmission blocks of the supported scheduling, and the second number is the number of the transmission blocks included in the shared channel when the number of transmission layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers.
28. The method of claim 27,

    the first information includes at least one of the following information: service class, coding block group CBG information, bandwidth section BWP information.
29. The method of claim 27 or 28, further comprising:

    the network equipment sends a first Physical Downlink Shared Channel (PDSCH);

    and the network equipment receives ACK/NACK feedback information of the terminal equipment for the first PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the second number.
30. The method of any one of claims 23-26,

    the maximum number of actually schedulable transport blocks in the downlink control information is equal to a third number, which is equal to a maximum value or a minimum value of the maximum number of the transport blocks supported for scheduling and a second number, where the second number is the number of transport blocks included in the shared channel when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers.
31. The method of claim 30, wherein a number of sets of information fields included in the downlink control information is equal to a third number, wherein a type of the third number of sets of information fields is a first type, and the first type of information field is used for indicating scheduling information of a transport block.
32. The method of claim 30 or 31, further comprising:

    the network device sends a second PDSCH;

    and the network equipment receives ACK/NACK feedback information of the terminal equipment to the second PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the third number.
33. The method according to claim 24 or 25, characterized in that when the number of transmission layers used for transmitting a shared channel is equal to the first threshold value, the number of transport blocks included in the shared channel is equal to the second threshold value.
34. The method of claim 33, wherein when the first threshold is 4, the second threshold is 1; and/or the presence of a gas in the gas,

    when the first threshold is 8, the second threshold is 2.
35. The method according to claim 33 or 34, wherein the maximum number of transport blocks that can actually be scheduled in said downlink control information is equal to the maximum number of transport blocks that can support scheduling.
36. The method of claim 35, wherein a number of sets of information fields included in the downlink control information is equal to a first number, a type of the first number of sets of information fields is a first type, and the first type of information fields is used for indicating scheduling information of a transport block, wherein the first number is equal to the maximum number of the supported scheduled transport blocks.
37. The method according to any of claims 27, 31, 36, wherein the first type information field comprises at least one of the following information fields: the new data indicates NDI information field, modulation coding level MCS information field and redundancy version RV information field.
38. A method for transmitting downlink control information, comprising:

    the network equipment sends a first signaling and a second signaling, wherein the first signaling is used for indicating the maximum number of transmission blocks scheduled by the downlink control information, and the second signaling is used for indicating the maximum value of a channel rank and/or a transmission layer number supported by the terminal equipment for feeding back the channel quality information;

    and the network equipment determines whether to send the downlink control information according to the maximum number of the transmission blocks supported to be scheduled, the maximum value of the channel rank and/or the maximum value of the transmission layer number.
39. The method of claim 38, wherein the determining, by the network device, whether to send the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers comprises:

    and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value, sending the downlink control information.
40. The method according to claim 38 or 39, wherein the determining, by the network device, whether to send the downlink control information according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers comprises:

    and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is larger than a second threshold value, sending the downlink control information.
41. The method according to any of claims 38-40, wherein the determining, by the network device, whether to send the downlink control information according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers comprises:

    and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value, not sending the downlink control information.
42. The method according to any of claims 38-41, wherein the determining, by the network device, whether to send the downlink control information according to the maximum number of the supported scheduled transport blocks, the maximum value of the channel rank and/or the number of transport layers comprises:

    and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is smaller than or equal to a second threshold value, not sending the downlink control information.
43. The method according to any of claims 39-42, wherein the number of transport blocks comprised in the shared channel is equal to the second threshold when the number of transport layers used for transmitting the shared channel is equal to the first threshold.
44. The method of claim 43, wherein when the first threshold is 4, the second threshold is 1; and/or the presence of a gas in the gas,

    when the first threshold is 8, the second threshold is 2.
45. A terminal device, comprising:

    a communication unit, configured to receive a first signaling and a second signaling, where the first signaling is used to indicate a maximum number of scheduled transmission blocks supported by downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transmission layers supported by the terminal device for feeding back channel quality information;

    the communication unit is further configured to receive the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the maximum value of the number of transmission layers.
46. The terminal device of claim 45, wherein the communication unit is specifically configured to:

    and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value.
47. The terminal device according to claim 45 or 46, wherein the communication unit is specifically configured to:

    and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value.
48. The terminal device according to any of claims 45-47, characterised in that the terminal device further comprises:

    a determining unit, configured to determine, according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers, the number of groups of information fields and/or the type of the information fields included in the downlink control information;

    the communication unit is specifically configured to: and receiving the downlink control information according to the group number of the information domains and/or the types of the information domains.
49. The terminal device according to any of claims 45-48,

    the group number of information fields included in the downlink control information is equal to a first number, the first number group information field includes a second number group information field and other group information fields, the type of the second number group information field is a first type, the type of the other group information fields is a second type, the first type information field is used for indicating scheduling information of a transmission block, the second type information field is used for indicating first information, and the first information is different from the scheduling information of the transmission block,

    the first number is equal to the maximum number of the transmission blocks of the supported scheduling, and the second number is the number of the transmission blocks included in the shared channel when the number of transmission layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers.
50. The terminal device of claim 49, wherein the first information comprises at least one of the following information: service class, coding block group CBG information, bandwidth section BWP information.
51. The terminal device according to claim 49 or 50, wherein the communication unit is further configured to:

    receiving a first Physical Downlink Shared Channel (PDSCH);

    transmitting Acknowledgement (ACK)/Negative Acknowledgement (NACK) feedback information of the first PDSCH, the number of bits of the ACK/NACK feedback information being equal to the second number.
52. The terminal device according to any of claims 45-48, wherein the maximum number of transport blocks actually schedulable in the downlink control information is equal to a third number, which is equal to the maximum or minimum of the maximum number of transport blocks supported scheduling, wherein the second number is the number of transport blocks included in the shared channel when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers.
53. The terminal device of claim 52, wherein a number of sets of information fields included in the downlink control information is equal to the third number, wherein a type of the third number of sets of information fields is a first type, and the first type of information field is used for indicating scheduling information of a transport block.
54. The terminal device according to claim 52 or 53, wherein the communication unit is further configured to:

    receiving a second PDSCH;

    transmitting an ACK/NACK feedback message for the second PDSCH, the number of bits of the ACK/NACK feedback message being equal to the third number.
55. The terminal device according to claim 46 or 47, wherein when the number of transmission layers used for transmitting a shared channel is equal to the first threshold, the number of transmission blocks included in the shared channel is equal to the second threshold.
56. The terminal device of claim 55, wherein when the first threshold is 4, the second threshold is 1; and/or the presence of a gas in the gas,

    when the first threshold is 8, the second threshold is 2.
57. A terminal device according to claim 55 or 56, wherein the maximum number of transport blocks actually schedulable in the downlink control information is equal to the maximum number of transport blocks supported scheduling.
58. The terminal device of claim 57, wherein a number of sets of information fields included in the downlink control information is equal to a first number, a type of the first number of sets of information fields is a first type, the first type of information fields is used for indicating scheduling information of transport blocks, and the first number is equal to the maximum number of the transport blocks for which scheduling is supported.
59. The terminal device according to any of claims 49, 53, 58, wherein the information field of the first type comprises at least one of the following information fields: the new data indicates NDI information field, modulation coding level MCS information field and redundancy version RV information field.
60. A terminal device, comprising:

    a communication unit, configured to receive a first signaling and a second signaling, where the first signaling is used to indicate a maximum number of transmission blocks that are scheduled and supported by downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transmission layers that are supported by the terminal device for feeding back channel quality information;

    and a processing unit, configured to determine whether to receive the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the maximum value of the number of transmission layers.
61. The terminal device of claim 60, wherein the processing unit is specifically configured to:

    and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value.
62. The terminal device according to claim 60 or 61, wherein the processing unit is specifically configured to:

    and receiving the downlink control information when the maximum value of the channel rank and/or the number of transmission layers is greater than a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value.
63. The terminal device according to any of claims 60 to 62, wherein the processing unit is specifically configured to:

    and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value, not receiving the downlink control information.
64. The terminal device according to any of claims 60 to 63, wherein the processing unit is specifically configured to:

    and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is smaller than or equal to a second threshold value, not receiving the downlink control information.
65. The terminal device according to any of claims 61-64, wherein when the number of transmission layers used for transmitting a shared channel is equal to the first threshold value, the number of transport blocks included in the shared channel is equal to the second threshold value.
66. The terminal device of claim 65, wherein when the first threshold is 4, the second threshold is 1; and/or the presence of a gas in the gas,

    when the first threshold is 8, the second threshold is 2.
67. A network device, comprising:

    a communication unit, configured to send a first signaling and a second signaling, where the first signaling is used to indicate a maximum number of scheduled transmission blocks supported by downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transmission layers supported by a terminal device for feeding back channel quality information;

    the communication unit is further configured to send the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the maximum value of the number of transmission layers.
68. The network device of claim 67, wherein the communication unit is specifically configured to:

    and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value, sending the downlink control information.
69. The network device according to claim 67 or 68, wherein the processing unit is specifically configured to:

    and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is larger than a second threshold value, sending the downlink control information.
70. The network device of any one of claims 67-69, wherein the network device further comprises:

    a processing unit, configured to determine, according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers, the number of groups of information fields and/or the type of the information fields included in the downlink control information;

    the communication unit is specifically configured to: and sending the downlink control information according to the group number of the information domains and/or the types of the information domains.
71. The network device of any one of claims 67-70, wherein a number of groups of information fields included in the downlink control information is equal to a first number, the first number of group information fields includes a second number of group information fields and other group information fields, a type of the second number of group information fields is a first type, a type of the other group information fields is a second type, the first type information field is used to indicate scheduling information of a transport block, the second type information field is used to indicate first information, and the first information is different from the scheduling information of the transport block,

    the first number is equal to the maximum number of the transmission blocks of the supported scheduling, and the second number is the number of the transmission blocks included in the shared channel when the number of transmission layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transmission layers.
72. The network device of claim 71, wherein the first information comprises at least one of: service class, coding block group CBG information, bandwidth section BWP information.
73. The network device of claim 71 or 72, wherein the communication unit is further configured to:

    sending a first Physical Downlink Shared Channel (PDSCH);

    and receiving Acknowledgement (ACK)/Negative Acknowledgement (NACK) feedback information of the terminal equipment to the first PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the second number.
74. The network device of any of claims 67-70,

    the maximum number of actually schedulable transport blocks in the downlink control information is equal to a third number, which is equal to a maximum value or a minimum value of the maximum number of the transport blocks supported for scheduling and a second number, where the second number is the number of transport blocks included in the shared channel when the number of transport layers used for transmitting the shared channel is equal to the maximum value of the channel rank and/or the number of transport layers.
75. The network device of claim 74, wherein a number of sets of information fields included in the downlink control information is equal to a third number, wherein a type of the third number of sets of information fields is a first type, and the first type of information field is used for indicating scheduling information of a transport block.
76. The network device of claim 74 or 75, wherein the communication unit is further configured to:

    transmitting a second PDSCH;

    and receiving ACK/NACK feedback information of the terminal equipment on the second PDSCH, wherein the bit number of the ACK/NACK feedback information is equal to the third number.
77. The network device of claim 68 or 69, wherein the number of transport blocks included in the shared channel is equal to the second threshold when the number of transport layers used for transmitting the shared channel is equal to the first threshold.
78. The network device of claim 77, wherein when the first threshold is 4, the second threshold is 1; and/or the presence of a gas in the gas,

    when the first threshold is 8, the second threshold is 2.
79. The network device of claim 77 or 78, wherein a maximum number of transport blocks actually schedulable in the downlink control information is equal to the maximum number of supported scheduling transport blocks.
80. The network device of claim 79, wherein a number of sets of information fields included in the downlink control information is equal to a first number, a type of the first number of sets of information fields is a first type, the first type of information fields is used for indicating scheduling information of transport blocks, and the first number is equal to the maximum number of the supported scheduled transport blocks.
81. The network device of any of claims 71, 75, 80, wherein the first type information field comprises at least one of the following information fields: the new data indicates NDI information field, modulation coding level MCS information field and redundancy version RV information field.
82. A network device, comprising:

    a communication unit, configured to send a first signaling and a second signaling, where the first signaling is used to indicate a maximum number of transmission blocks scheduled by the downlink control information, and the second signaling is used to indicate a maximum value of a channel rank and/or a number of transmission layers supported by a terminal device for feeding back channel quality information;

    a processing unit: and determining whether to send the downlink control information according to the maximum number of the transmission blocks supported for scheduling, the maximum value of the channel rank and/or the number of transmission layers.
83. The network device of claim 82, wherein the processing unit is specifically configured to:

    and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supporting scheduling is less than or equal to a second threshold value, sending the downlink control information.
84. The network device according to claim 82 or 83, wherein the processing unit is specifically configured to:

    and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is larger than a second threshold value, sending the downlink control information.
85. The network device according to any one of claims 82-84, wherein the processing unit is specifically configured to:

    and when the maximum value of the channel rank and/or the number of transmission layers is less than or equal to a first threshold value and the maximum number of the transmission blocks supported for scheduling is greater than a second threshold value, not sending the downlink control information.
86. The network device according to any one of claims 82-85, wherein the processing unit is specifically configured to:

    and when the maximum value of the channel rank and/or the number of transmission layers is larger than a first threshold value and the maximum number of the transmission blocks supported for scheduling is smaller than or equal to a second threshold value, not sending the downlink control information.
87. The network device of any one of claims 83-86, wherein the number of transport blocks included in the shared channel is equal to the second threshold when the number of transport layers used for transmitting the shared channel is equal to the first threshold.
88. The network device of claim 87, wherein when the first threshold is 4, the second threshold is 1; and/or the presence of a gas in the gas,

    when the first threshold is 8, the second threshold is 2.
89. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 15.
90. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 16 to 22.
91. A network device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 23 to 37.
92. A network device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 38 to 44.
93. A chip, comprising: a processor for calling and running a computer program from a memory so that a terminal device installed with the chip executes the method for transmitting downlink control information according to any one of claims 1 to 15.
94. A chip, comprising: a processor for calling and running a computer program from a memory so that a terminal device in which the chip is installed performs the method for transmitting downlink control information according to any one of claims 16 to 22.
95. A chip, comprising: a processor for calling and running a computer program from a memory so that a network device in which the chip is installed performs the method for transmitting downlink control information according to any one of claims 23 to 37.
96. A chip, comprising: a processor for calling and running a computer program from a memory so that a network device in which the chip is installed performs the method of transmitting downlink control information according to any one of claims 38 to 44.
97. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 15.
98. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 16 to 22.
99. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 23 to 37.
100. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 38 to 44.
101. A computer program product comprising computer program instructions for causing a computer to perform the method of transmitting downlink control information according to any one of claims 1 to 15.
102. A computer program product comprising computer program instructions for causing a computer to perform the method of transmitting downlink control information according to any one of claims 16 to 22.
103. A computer program product comprising computer program instructions for causing a computer to perform the method of transmitting downlink control information according to any one of claims 23 to 37.
104. A computer program product comprising computer program instructions for causing a computer to perform the method of transmitting downlink control information according to any one of claims 38 to 44.
105. A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 1-15.
106. A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 16 to 22.
107. A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 23-37.
108. A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 38 to 44.

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