CN110351846B - Information transmission method and information transmission device - Google Patents

Abstract

The present application provides an information transmission method and an information transmission device. The method includes: a terminal device receives first downlink control information, the first downlink control information carries first indication information, and the first indication information is used for triggering the terminal device to report A-CSI; the terminal device acquires first timing information, and the first timing information is used to indicate that the terminal device receives the first downlink control information from the time unit to the reported The offset value of the time unit of the A-CSI; the terminal device determines the reporting time unit of the A-CSI according to the first timing information; the terminal device reports the time unit of the A-CSI to The network device sends the A-CSI. The information transmission method and information transmission device of the embodiments of the present application can indicate the feedback delay of A-CSI, so that the terminal equipment reports the A-CSI in the correct time unit.

Description

Information transmission method and information transmission device

technical field

The present application relates to the communication field, and in particular to an information transmission method and an information transmission device in the communication field.

Background technique

In order to make better use of spectrum resources and increase the system capacity as much as possible while ensuring the reliability of data transmission, it is necessary to design a more accurate link adaptive technology. Channel state information (channel state information, CSI) fed back by users is the basis for downlink adaptation, and how to quickly and accurately obtain CSI is the most important thing for downlink adaptation.

At present, the fifth-generation mobile communication technology (5-Generation, 5G) has supported terminal equipment to use a short physical uplink control channel (short physical uplink control channel, S-PUCCH) to send aperiodic channel state information (aperiodic CSI, A- CSI), and support the network device to use downlink control information (downlink control information, DCI) to trigger the terminal device to report the A-CSI. In this way, the network device can trigger the terminal device to report A-CSI while using the DCI to schedule downlink data transmission, and perform link adaptation for the next transmission according to the A-CSI fed back by the terminal device. Compared with periodic channel state information (periodic CSI, P-CSI) feedback and semi-persistent channel state information (semi-persistent CSI, SP-CSI) feedback, A-CSI feedback is more dynamic and flexible, and can meet ultra- Low latency requirements for ultra-reliable and low latency communications (URLLC). Compared with the previous transmission of A-CSI on the physical uplink shared channel (PUSCH), the transmission of A-CSI on the S-PUCCH can decouple the transmission of A-CSI and PUSCH, thereby avoiding unnecessary uplink Authorize scheduling.

Therefore, when the DCI triggers the terminal device to report the A-CSI on the S-PUCCH, how to indicate the feedback delay of the A-CSI becomes an urgent problem to be solved.

Contents of the invention

The present application provides an information transmission method and an information transmission device, which can indicate the feedback delay of A-CSI, so that the terminal equipment reports the A-CSI in the correct time unit.

In a first aspect, an information transmission method is provided, including: a terminal device receives first downlink control information, the first downlink control information carries first indication information, and the first indication information is used to trigger the terminal The device reports the aperiodic channel state information A-CSI; the terminal device acquires first timing information, and the first timing information is used to indicate the time unit from which the terminal device receives the first downlink control information to report The offset value of the time unit of the A-CSI (referred to as Y in this application); the terminal device determines the reporting time unit of the A-CSI according to the first timing information; The reporting time unit of the A-CSI is used to send the A-CSI to the network device.

In the information transmission method of the embodiment of the present application, the terminal device determines the offset value from the time unit when the terminal device receives the first downlink control information to the time unit when the A-CSI is reported according to the first timing information, and then determines to report the A-CSI The time unit of the A-CSI can be indicated by the first timing information, so that the terminal device reports the A-CSI at the correct time unit, thereby improving system performance.

It should be understood that the foregoing time unit may be a time slot or other time units, for example, mini-slots, subframes, etc., which are not limited in this embodiment of the present application.

It should also be understood that, in this embodiment of the present application, the terminal device may obtain the above-mentioned first timing information in various ways, for example, when the first downlink control information carries related information for indicating the first timing information , then the terminal device may directly obtain the first timing information from the first downlink control information. For another example, the above-mentioned first timing information may be configured by the network device for the terminal device through high-level signaling, or predefined, this The embodiment of the application does not limit this.

With reference to the first aspect, in some implementation manners of the first aspect, the acquiring the first timing information by the terminal device includes: receiving, by the terminal device, second indication information, where the second indication information is used to indicate that the first timing information timing information, and the second indication information is configured by a high layer.

Specifically, the foregoing second indication information may be configured by a high layer. The second indication information does not indicate resource allocation. In other words, the second indication information and the information indicating resource allocation may be two completely independent pieces of information. Optionally, the second indication information may be carried in high-layer information, and the high-layer information may be radio resource control (radio resource control, RRC) signaling. Optionally, the foregoing first timing information may also be predefined, but this is not limited in this embodiment of the present application.

It should be understood that when the first downlink control information is Compact DCI, the first timing information may be configured in a high-level or predefined manner, or may be estimated from other information, which is not limited in this embodiment of the present application.

It should be understood that, on the basis of configuring the first timing information, if the above-mentioned first downlink control information schedules the PDSCH and triggers the terminal device to feed back the corresponding HARQ-ACK, the terminal device can also determine the second timing information, the second timing The information indicates the corresponding time unit of the PDSCH scheduled by the first downlink control information to the terminal equipment feedback

The offset value of the time unit of the HARQ-ACK (referred to as K1 in this application). The second timing information may be configured or predefined by a high layer, and may also be calculated by the terminal device based on other information.

With reference to the first aspect, in some implementation manners of the first aspect, the first downlink control information carries third indication information, and the third indication information is used to indicate the first timing information and/or the second timing information. Timing information, wherein the second timing information is used to indicate the time unit from which the terminal device receives the physical downlink shared channel PDSCH scheduled by the first downlink control information to the time when the terminal device feeds back the corresponding first HAR Transmitting the offset value of the request-confirmation HARQ-ACK time unit; the terminal device acquiring the first timing information includes: the terminal device determining the first timing information according to the third indication information and the first mapping relationship Timing information, wherein the first mapping relationship is used to indicate a corresponding relationship between the third indication information and the first timing information and the second timing information.

Specifically, the above-mentioned first downlink control information also carries third indication information, and the third indication information may be used to indicate the first timing information, may be used to indicate the second timing information, or may be used to indicate the first timing information at the same time. information and second timing information. The second timing information is used to indicate an offset value from the time unit of the PDSCH scheduled by the first downlink control information to the time unit of the corresponding HARQ-ACK fed back by the terminal device. The terminal device may determine the first timing information according to the third indication information and the first mapping relationship, that is, determine an offset value from the time unit when the terminal device receives the first downlink control information to the time unit when the A-CSI is reported. It should be understood that the third indication information does not indicate resource allocation. In other words, the third indication information and the information indicating resource allocation may be two completely independent pieces of information.

In the case that the first downlink control information schedules the PDSCH, the third indication information may indicate the second timing information, and the terminal device may determine the second timing information according to the third indication information, and further determine the feedback corresponding to the PDSCH. The time unit of the first HARQ-ACK.

In the case that the first downlink control information does not schedule the PDSCH, the second timing information may still be indicated by the third indication information in the first downlink control information, except that the network device does not send the PDSCH at this time, so the terminal device There is also no need to receive the PDSCH and feed back the corresponding HARQ-ACK.

It should be understood that if the first downlink control information is Non-fallback DCI or Fallback DCI in the common search space, the above first mapping relationship can be configured to the terminal device through RRC signaling, if the first downlink control information is Fallback DCI, the above The first mapping relationship is predefined.

With reference to the first aspect, in some implementation manners of the first aspect, the first mapping relationship includes: a first sub-mapping relationship and/or a second sub-mapping relationship, wherein the first sub-mapping relationship is used to indicate When the first downlink control information does not trigger the terminal device to feed back the first HARQ-ACK, and the first downlink control information triggers the terminal device to feed back the A-CSI, the The correspondence between the third indication information and the first timing information, the second sub-mapping relationship is used to indicate that the first downlink control information triggers the terminal device to feed back the first HARQ-ACK and In the case of the A-CSI, the correspondence between the third indication information and the first timing information and the second timing information.

It should be understood that the foregoing first mapping relationship may also include a third sub-mapping relationship, where the third sub-mapping relationship is used to indicate that the first downlink control information triggers that the terminal device needs to feed back the HARQ-ACK, and the When the first downlink control information does not trigger the terminal device to feed back the A-CSI, the corresponding relationship between the value of the third indication information and the second timing information. In this way, when only HARQ-ACK (only HARQ-ACK) is fed back, the terminal device can determine the second timing information based on the third sub-mapping relationship and according to the third indication information. At this time, the third indication information is used to indicate the first 2. Timing information.

It should also be understood that in the embodiment of the present application, it is possible that the first downlink control information does not support the situation where the terminal device is only triggered to feed back A-CSI and does not schedule the PDSCH, then the first downlink control information needs to trigger the terminal device at the same time The A-CSI and the HARQ-ACK corresponding to the PDSCH scheduled by the first downlink control information are fed back. At this time, the first mapping relationship does not include only the first sub-mapping relationship.

Optionally, the above-mentioned first mapping relationship may only include a fourth sub-mapping relationship, and the fourth sub-mapping relationship is used to indicate the relationship between the third indication information and the first timing information and the second timing information corresponding relationship. In this case, regardless of whether the first downlink control information triggers the terminal device to feed back HARQ-ACK, the terminal device may always determine the first timing information according to the fourth sub-mapping relationship and the third indication information. Similarly, no matter whether the above-mentioned first downlink control information triggers the terminal device to feed back A-CSI, the terminal device may always determine the second timing information according to the fourth sub-mapping relationship and the third indication information.

The foregoing first mapping relationship may be configured through high-layer signaling, or may be predefined, which is not limited in this embodiment of the present application. When the first indication information is the Fallback DCI or the Fallback DCI in the common search space, the first mapping relationship is predefined, and in other cases, the first mapping relationship may be configured through high-layer signaling.

With reference to the first aspect, in some implementation manners of the first aspect, the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information has scheduled PDSCH triggers the terminal device to feed back the corresponding first HARQ-ACK; the terminal device determines the first timing information according to the third indication information and the first mapping relationship, including: the terminal device according to The third indication information, the fourth indication information, and the first mapping relationship determine the first timing information.

It should be understood that the foregoing fourth indication information may be in an explicit indication manner or in an implicit indication manner, which is not limited in this embodiment of the present application. For the explicit indication mode, a certain bit can be explicitly used for direct indication; for the implicit indication mode, it can be realized through some existing parameter combinations, for example, when the HARQ ID, new data indicator (new data indicator, NDI ), redundancy version (redundancy version, RV) ID, modulation coding strategy (modulation coding strategy, MCS) when the values are certain or certain fixed combinations, it means that the network equipment does not schedule PDSCH; and for example, when the value of MCS is A certain value, and when the number of resource elements (ResourceElements, REs) allocated by the time-frequency resource allocation indication is less than a certain value, it means that the network device does not schedule the PDSCH, but this embodiment of the present application does not limit it.

With reference to the first aspect, in some implementation manners of the first aspect, the third indication information is used to indicate the second timing information, and the first downlink control information further includes seventh indication information, the seventh The indication information is used to indicate third timing information, and the third timing information is used to indicate a time unit from when the terminal device receives the first downlink control information to when the terminal device receives the first downlink control information is scheduled The offset value of the time unit of the PDSCH; the terminal device determines the first timing information according to the third indication information, including: the terminal device determines the first timing information according to the second timing information, the third timing information and a second mapping relationship, determining the first timing information, wherein the second mapping relationship is used to indicate the correspondence between the second timing information, the third timing information, and the first timing information .

Specifically, the third timing information is used to indicate the offset value from the time unit when the terminal equipment receives the first downlink control information to the time unit when the terminal equipment receives the PDSCH scheduled by the first downlink control information (this application is referred to as the first downlink control information Three timing information K0). The first downlink control information may carry information respectively indicating K0 and K1, and the terminal device determines K0 and K1 according to the first downlink control information, and then combines the second mapping relationship to determine the first timing information Y.

It should be understood that the seventh indication information may also indicate time-domain resource allocation information of the PDSCH scheduled by the first downlink control information, but this embodiment of the present application does not limit this.

Optionally, the above-mentioned second mapping relationship is used to represent Y=K0+K1, that is, the A-CSI and HARQ-ACK fed back by the terminal device are in the same time unit, or even the same PUCCH resource in the same time unit. The embodiment does not limit this.

It should be understood that when the first downlink control information does not schedule PDSCH transmission, that is, it does not trigger the terminal equipment to feedback

In the case of HARQ-ACK, the above K0 and K1 have no actual physical meaning, but the terminal device only needs to determine Y according to the values of K0 and K1 in the above manner.

With reference to the first aspect, in some implementation manners of the first aspect, the first downlink control information further carries fifth indication information, and the fifth indication information is used to indicate the power of the PUCCH carrying the A-CSI Control command; before the terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, the method further includes: the terminal device determines the The sending power of A-CSI; the terminal sends the A-CSI to the network device in the reporting time unit of the A-CSI, including: the terminal device uses the A-CSI in the reporting time unit of the A-CSI - transmit power of CSI to transmit the A-CSI to the network device.

With reference to the first aspect, in some implementations of the first aspect, the fifth indication information is used to indicate a power control command of the PUCCH carrying the first HARQ-ACK, and the PUCCH carrying the A-CSI The power control command of the PUCCH carrying the first HARQ-ACK is the same as the power control command of the PUCCH carrying the first HARQ-ACK.

With reference to the first aspect, in some implementation manners of the first aspect, before the terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, the method further includes: the The terminal device receives second downlink control information, the second downlink control information is used to trigger the terminal device to feed back the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information, and the second HARQ-ACK The feedback time unit of the A-CSI is the same as the reporting time unit of the A-CSI; the terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, including: the terminal device according to the A-CSI reporting time unit For the downlink control information and the second downlink control information, jointly encode the information bits of the A-CSI and the information bits of the second HARQ-ACK in the reporting time unit of the A-CSI to generate a code the encoded information; the terminal device sends the encoded information to the network device.

It should be understood that the embodiment of the present application emphasizes that two DCIs trigger the reporting of A-CSI and HARQ-ACK respectively, that is, the first downlink control information triggers the terminal device to feed back A-CSI, and the second downlink control information triggers the terminal device to feed back the second Two HARQ-ACKs are fed back in the same time unit. The first downlink control information may trigger the terminal device to feed back the first HARQ-ACK, or may not trigger the terminal device to feed back the first HARQ-ACK. If the first downlink control information triggers the terminal device to feed back the first HARQ-ACK, the first The HARQ-ACK is fed back in different time units from the above-mentioned A-CSI.

In addition, the terminal device may discard the second HARQ-ACK and only send the A-CSI for the A-CSI and the second HARQ-ACK that need to be fed back within the same time unit. Similarly, the terminal device may also discard the A-CSI and only send the second HARQ-ACK for the A-CSI and the second HARQ-ACK that need to be fed back within the same time unit. This embodiment of the present application does not limit it.

It should be understood that the first downlink control information also triggers the terminal equipment to feed back the first HARQ-ACK, and the first

When HARQ-ACK and the above-mentioned A-CSI are fed back in the same time unit, the terminal device needs to jointly encode the information bits of the first HARQ-ACK, the second HARQ-ACK, and A-CSI, and transmit the encoded information bits.

In addition, the terminal device may discard the first HARQ-ACK and the second HARQ-ACK for the A-CSI, the first HARQ-ACK and the second HARQ-ACK that need to be fed back in the same time unit, and only send the A-CSI. Similarly, the terminal device can also perform the A-CSI, the first HARQ-ACK and the second HARQ-ACK that need to be fed back in the same time unit

For HARQ-ACK, A-CSI is discarded, and only the first HARQ-ACK and the second HARQ-ACK are sent. This embodiment of the present application does not limit it.

With reference to the first aspect, in some implementation manners of the first aspect, when the first downlink control information only triggers the terminal device to feed back the A-CSI, the first downlink control information also Including sixth indication information, where the sixth indication information is used to indicate that by the end of the first downlink control information, the PDSCH has been scheduled and indicates that the corresponding second HARQ-ACK needs to be within the reporting time unit of the A-CSI The number of the second downlink control information that is fed back; the information bits of the A-CSI and the information bits of the second HARQ-ACK are combined in the reporting time unit of the A-CSI by the terminal device Before encoding, the method further includes: the terminal device determines, according to the sixth indication information, the HARQ-ACK codebook that needs to be fed back within the reporting time unit of the A-CSI; An ACK codebook for generating information bits of the second HARQ-ACK.

In this embodiment of the present application, the terminal device determines, according to the sixth indication information in the first downlink control information, that the PDSCH is scheduled before the first downlink control information and indicates that the corresponding second HARQ-ACK needs to be sent in the first downlink control information. The downlink control information triggers the number of the second downlink control information fed back in the A-CSI reporting time unit reported by the terminal device, and determines the HARQ-ACK codebook that needs to be fed back in the A-CSI reporting time unit, so that the terminal device Even if the previous second downlink control information is not received or missed, the corresponding HARQ-ACK can be fed back in the first downlink control information, thereby improving data transmission performance.

In a second aspect, another information transmission method is provided, including: a network device sends first downlink control information, the first downlink control information carries first indication information, and the first indication information is used to trigger the The terminal device reports the aperiodic channel state information A-CSI; the network device receives the A-CSI sent by the terminal device according to the first downlink control information and first timing information, and the first timing The information is used to indicate an offset value from a time unit when the terminal device receives the first downlink control information to a time unit when the A-CSI is reported.

In the information transmission method of the embodiment of the present application, the terminal device determines the offset value from the time unit when the terminal device receives the first downlink control information to the time unit when the A-CSI is reported according to the first timing information, and then determines to report the A-CSI The time unit of the A-CSI can be indicated by the first timing information, so that the terminal device reports the A-CSI at the correct time unit, thereby improving system performance.

With reference to the second aspect, in some implementation manners of the second aspect, before the network device receives the A-CSI sent by the terminal device according to the first downlink control information and the first timing information, the The method also includes:

The network device sends second indication information, where the second indication information is used to indicate the first timing information, and the second indication information is configured by a high layer.

With reference to the second aspect, in some implementation manners of the second aspect, the first downlink control information carries third indication information, and the third indication information is used to indicate the first timing information and/or the second timing information. Timing information, wherein the second timing information is used to indicate the time unit from which the terminal device receives the physical downlink shared channel PDSCH scheduled by the first downlink control information to the time when the terminal device feeds back the corresponding first HAR Transmitting the offset value of the time unit of the request-confirmation HARQ-ACK; the network device receiving the A-CSI sent by the terminal device according to the first downlink control information and the first timing information, including: The network device receives the A-CSI sent by the terminal device according to the third indication information and the first mapping relationship, where the first mapping relationship is used to indicate the third indication information and the first timing The corresponding relationship between the information and the second timing information.

With reference to the second aspect, in some implementation manners of the second aspect, the first mapping relationship includes: a first sub-mapping relationship and/or a second sub-mapping relationship, where the first sub-mapping relationship is used to indicate When the first downlink control information does not trigger the terminal device to feed back the first HARQ-ACK, and the first downlink control information triggers the terminal device to feed back the A-CSI, the The correspondence between the third indication information and the first timing information, the second sub-mapping relationship is used to indicate that the first downlink control information triggers the terminal device to feed back the first HARQ-ACK and In the case of the A-CSI, the correspondence between the third indication information and the first timing information and the second timing information.

With reference to the second aspect, in some implementation manners of the second aspect, the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information schedules PDSCH and triggers the terminal device to feed back the corresponding first HARQ-ACK; the network device receives the A-CSI sent by the terminal device according to the third indication information and the first mapping relationship, including: the The network device receives the A-CSI sent by the terminal device according to the third indication information, the fourth indication information, and the first mapping relationship.

With reference to the second aspect, in some implementation manners of the second aspect, the first downlink control information further includes fifth indication information, and the fifth indication information is used to indicate the power of the PUCCH carrying the A-CSI control commands.

With reference to the second aspect, in some implementations of the second aspect, the fifth indication information is used to indicate a power control command of the PUCCH carrying the first HARQ-ACK, and the PUCCH carrying the A-CSI The power control command of the PUCCH carrying the first HARQ-ACK is the same as the power control command of the PUCCH carrying the first HARQ-ACK.

With reference to the second aspect, in some implementation manners of the second aspect, before the network device receives the A-CSI sent by the terminal device according to the first downlink control information and the first timing information, the The method further includes: the network device sending second downlink control information, the second downlink control information is used to trigger the terminal device to feed back the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information, and The feedback time unit of the second HARQ-ACK is the same as the reporting time unit of the A-CSI; the network device receives the information sent by the terminal device according to the first downlink control information and the first timing information. A-CSI, including: receiving, by the network device, information bits for the A-CSI and the second HARQ information sent by the terminal device according to the first downlink control information and the second downlink control information - Information obtained by jointly encoding the information bits of the ACK.

With reference to the second aspect, in some implementation manners of the second aspect, when the first downlink control information only triggers the terminal device to feed back the A-CSI, the first downlink control information also Including sixth indication information, the sixth indication information is used to indicate that the PDSCH has been scheduled before the first downlink control information and indicates that the corresponding second HARQ-ACK needs to be fed back in the time slot where the A-CSI is reported The number of the second downlink control information.

In a third aspect, an information transmission device is provided, configured to execute the method in the first aspect or any possible implementation manner of the first aspect. The information transmission device may also be a terminal device, or any communication device capable of communication. Specifically, the terminal device includes a unit configured to execute the method in the foregoing first aspect or any possible implementation manner of the first aspect.

In a fourth aspect, another information transmission device is provided, configured to execute the method in the second aspect or any possible implementation manner of the second aspect. The information transmission device may also be a terminal device, or any communication device capable of communication. Specifically, the network device includes a unit configured to execute the method in the foregoing second aspect or any possible implementation manner of the second aspect.

According to a fifth aspect, another information transmission device is provided, and the terminal device includes: a transceiver, a memory, and a processor. Wherein, the transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used to store instructions, and the processor is used to execute the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , and when the processor executes the instruction stored in the memory, the execution causes the processor to execute the method in the first aspect or any possible implementation manner of the first aspect.

According to a sixth aspect, another information transmission device is provided, and the network device includes: a transceiver, a memory, and a processor. Wherein, the transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used to store instructions, and the processor is used to execute the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , and when the processor executes the instruction stored in the memory, the execution causes the processor to execute the second aspect or the method in any possible implementation manner of the second aspect.

A seventh aspect provides an information transmission system, the system includes the device in the third aspect or any possible implementation of the third aspect and the fourth aspect or any of the possible implementations of the fourth aspect device; or

The system includes the fifth aspect or the device in any possible implementation manner of the fifth aspect and the sixth aspect or the device in any possible implementation manner of the sixth aspect.

In an eighth aspect, a computer program product is provided, and the computer program product includes: computer program code, when the computer program code is executed by a network device, the network device executes the first aspect or any one of the first aspect. A method in one possible implementation.

In a ninth aspect, a computer program product is provided, the computer program product including: computer program code, when the computer program code is run by a terminal device, the terminal device is made to perform any of the above-mentioned second aspect or the second aspect. A method in one possible implementation.

A tenth aspect provides a computer-readable medium for storing a computer program, where the computer program includes instructions for executing the method in the first aspect or any possible implementation manner of the first aspect.

In an eleventh aspect, a computer-readable medium is provided for storing a computer program, and the computer program includes instructions for executing the method in the second aspect or any possible implementation manner of the second aspect.

In a twelfth aspect, a chip system is provided, including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device installed with the chip system executes Any one of the above-mentioned aspects and the communication method in each implementation manner thereof.

Description of drawings

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

Fig. 2 shows a schematic flowchart of an information transmission method according to an embodiment of the present application.

Fig. 3 shows a schematic diagram of a transmission scenario of downlink control information according to an embodiment of the present application.

Fig. 4 shows a schematic diagram of another transmission scenario of downlink control information according to an embodiment of the present application.

Fig. 5 shows a schematic diagram of another transmission scenario of downlink control information according to an embodiment of the present application.

Fig. 6 shows a schematic diagram of another transmission scenario of downlink control information according to an embodiment of the present application.

Fig. 7 shows a schematic diagram of another transmission scenario of downlink control information according to an embodiment of the present application.

Fig. 8 shows a schematic block diagram of an information transmission device according to an embodiment of the present application.

Fig. 9 shows a schematic block diagram of another information transmission device according to an embodiment of the present application.

Fig. 10 shows a schematic block diagram of another information transmission device according to an embodiment of the present application.

Fig. 11 shows a schematic block diagram of another information transmission device according to an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system of mobile communication (global system of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division Multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, the future of the fifth generation (5th generation, 5G ) system or new wireless (new radio, NR), etc.

It should also be understood that the technical solutions of the embodiments of the present application can also be applied to various communication systems based on non-orthogonal multiple access technologies, such as sparse code multiple access (sparse code multiple access, SCMA) systems. Of course, SCMA is used in The field of communication can also be called by other names; further, the technical solutions of the embodiments of the present application can be applied to multi-carrier transmission systems using non-orthogonal multiple access technology, for example, using non-orthogonal multiple access technology Frequency division multiplexing (orthogonal frequency division multiplexing, OFDM), filter bank multi-carrier (filter bank multi-carrier, FBMC), generalized frequency division multiplexing (generalized frequency division multiplexing, GFDM), filter orthogonal frequency division multiplexing (filtered -OFDM, F-OFDM) systems, etc.

It should also be understood that, in this embodiment of the present application, the terminal device may communicate with one or more core networks via a radio access network (radio access network, RAN), and the terminal device may be referred to as an access terminal or a user equipment (userequipment, UE), subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in future 5G networks, or terminal devices in future evolved public land mobile networks (public land mobile network, PLMN) wait.

It should also be understood that in this embodiment of the present application, the network device may be used to communicate with the terminal device, and the network device may be a base transceiver station (BTS) in a GSM system or a CDMA system, or may be a base station (BTS) in a WCDMA system ( node B, NB), it can also be an evolved base station (evolutional node B, eNB or eNodeB) in the LTE system, or the network device can be a relay station, access point, vehicle equipment, wearable device, future 5G network Network side equipment or network equipment in the future evolved PLMN network.

The embodiments of this application can be applied to the LTE system and subsequent evolution systems such as 5G, or other wireless communication systems using various wireless access technologies, such as code division multiple access, frequency division multiple access, time division multiple access, and orthogonal Systems with access technologies such as frequency division multiple access and single carrier frequency division multiple access are especially suitable for scenarios that require channel information feedback and/or apply two-level precoding technology, such as wireless networks using Massive MIMO technology and distributed antennas technology wireless network etc.

It should be understood that the multiple-input multiple-output (MIMO) technology refers to the use of multiple transmitting antennas and receiving antennas on the transmitting end device and the receiving end device, so that the signal passes through multiple antennas of the transmitting end device and the receiving end device. Antennas transmit and receive, thereby improving communication quality. It can make full use of space resources, realize multiple transmission and multiple reception through multiple antennas, and can double the system channel capacity without increasing spectrum resources and antenna transmission power.

MIMO can be classified into single-user multiple-input multiple-output (single-user MIMO, SU-MIMO) and multi-user multiple-input multiple-output (multi-user MIMO, MU-MIMO). Massive MIMO is based on the principle of multi-user beamforming. Hundreds of antennas are arranged on the sending end equipment, and the respective beams are modulated for dozens of target receivers. Through spatial signal isolation, dozens of signals are simultaneously transmitted on the same frequency resource. Therefore, the Massive MIMO technology can make full use of the spatial freedom brought by large-scale antenna configuration to improve spectral efficiency.

FIG. 1 is a schematic diagram of a communication system used in an embodiment of the present application. As shown in FIG. 1 , the communication system 100 includes a network device 102, and the network device 102 may include multiple antenna groups. Each antenna group may include one or more antennas, for example, one antenna group may include antennas 104 and 106 , another antenna group may include antennas 108 and 110 , and an additional group may include antennas 112 and 114 . 2 antennas are shown for each antenna group in Fig. 1, however more or fewer antennas may be used for each group. The network device 102 may additionally include a transmitter chain and a receiver chain, and those of ordinary skill in the art may understand that they may include multiple components related to signal transmission and reception, such as processors, modulators, multiplexers, decoders, etc. modulator, demultiplexer or antenna etc.

Network device 102 may communicate with a plurality of terminal devices, for example, network device 102 may communicate with terminal device 116 and terminal device 122 . However, it is understood that network device 102 may communicate with any number of end devices similar to end devices 116 or 122 . Terminal devices 116 and 122 may be, for example, cellular phones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable devices for communicating over wireless communication system 100. equipment.

As shown in FIG. 1 , terminal device 116 communicates with antennas 112 and 114 , which transmit information to terminal device 116 via forward link 118 and receive information from terminal device 116 via reverse link 120 . Additionally, terminal device 122 is in communication with antennas 104 and 106 , wherein antennas 104 and 106 transmit information to terminal device 122 via forward link 124 and receive information from terminal device 122 via reverse link 126 .

For example, in a frequency division duplex FDD system, for example, forward link 118 may utilize a different frequency band than that used by reverse link 120 and forward link 124 may utilize a different frequency band than that used by reverse link 126 .

As another example, in a time division duplex TDD system and a full duplex (full duplex) system, forward link 118 and reverse link 120 may use a common frequency band, and forward link 124 and reverse link 126 may use a common frequency band. frequency band.

Each group of antennas and/or area designed for communication is referred to as a sector of network device 102 . For example, antenna groups may be designed to communicate with terminal devices in sectors of the coverage area of network device 102 . During communication between network device 102 and terminal devices 116 and 122 over forward links 118 and 124, respectively, the transmit antennas of network device 102 may utilize beamforming to improve the signal-to-noise ratio of forward links 118 and 124. Furthermore, when the network device 102 uses beamforming to transmit signals to randomly dispersed terminal devices 116 and 122 in the relevant coverage area, compared to the way in which the network device transmits signals to all its terminal devices through a single antenna, the Mobile devices experience less interference.

The network device 102, the terminal device 116, or the terminal device 122 may be a wireless communication sending device and/or a wireless communication receiving device, or any form of communication device. When transmitting data, the wireless communication transmitting device may encode the data for transmission. Specifically, the wireless communication sending device can obtain a certain number of data bits to be sent to the wireless communication receiving device through the channel, for example, the wireless communication sending device can generate, receive from other communication devices, or save in memory, etc. to be sent through the channel A certain number of data bits to a wireless communication receiving device. Such data bits may be contained in a transport block of data, or in multiple transport blocks, which may be segmented to produce multiple code blocks.

In addition, the communication system 100 may be a public land mobile network PLMN network or a device-to-device (device-to-device, D2D) network or a machine-to-machine (machine-to-machine, M2M) network or other networks, and FIG. Simplifying the schematic diagram, the network may also include other network devices, which are not shown in FIG. 1 .

The types of downlink control information (DCI for short) involved in the embodiment of the present application will first be described below.

1. Fallback DCI (Fallback DCI)

The main feature of Fallback DCI is that in this type of DCI, the presence or absence, size and width, and interpretation of each byte field do not require high-level signaling configuration and are predefined. In addition, the data transmission scheduled by the Fallback DCI is often low-capability transmission. Fallback DCI is mainly used for fallback operations in some special cases. For example, when the high-level parameters (such as RRC parameters) of terminal equipment need to be reconfigured, Fallback DCI must be used, which can avoid network equipment and terminal equipment. The problem of inconsistency in the interpretation of the sent DCI; another example, before the terminal device establishes the initial connection, the high-level parameters have not been obtained, and at this time the network device must also use FallbackDCI to schedule the terminal device. Currently, the Fallback DCI protocol includes two, Format 0_0 (uplink) and Format 1_0 (downlink).

2. Non-fallback DCI (Non-Fallback DCI)

Non-fallback DCI is "normal DCI", in which the presence or absence, size and width of some byte fields, how to interpret them, etc., can be flexibly configured through high-level signaling. Compared with the Fallback DCI, the Non-fallback DCI may have more and wider byte fields, so the payload size (payload size, ie, the total number of bits) of the Non-fallback DCI may be larger. Currently, the Non-Fallback DCI protocol includes two, Format 0_1 (uplink) and Format 1_1 (downlink).

3. Compressed DCI (Compact DCI)

Compact DCI is a type of non-fallback DCI. It is proposed to compress the load size of DCI during normal scheduling and sacrifice some scheduling flexibility to improve reliability. In the embodiment of this application, the DCI that schedules data transmission that meets the following conditions can be considered as Compact DCI:

(1) the payload size of the DCI is equal to the first value; or

(2) The payload magnitude of the DCI is less than the second value; or

(3) The payload size of the DCI is equal to the third value, and the value of the DCI format identification field of the DCI is equal to the fourth value; or

(4) The payload size of the DCI is equal to the third value, and the search space of the DCI is a terminal device-specific search space; or

(5) The payload size of the DCI is equal to the third value, the value of the DCI format identification field of the DCI is equal to the fourth value, and the search space of the DCI is the specific search space of the terminal device.

Among them, the first value can be predefined or configured by high-level, the second value can be predefined or configured by high-level, and can be set as the payload size of Fallback DCI, the third value is the payload size of Fallback DCI, and the fourth value is used It is used to distinguish between Fallback DCI and Compact DCI, and uplink scheduling and downlink scheduling in Fallback DCI or Compact DCI.

It should be understood that the above three types of DCI mainly refer to DCI as downlink transmission scheduling or uplink transmission scheduling, namely so-called downlink assignment (DL Assignment) and uplink grant (UL Grant), which are not limited in this embodiment of the present application.

FIG. 2 shows a schematic flowchart 200 of a data transmission method according to an embodiment of the present application. The method 200 may be applied to the communication system 100 shown in FIG. 1 , but this embodiment of the present application is not limited thereto.

S210, the network device sends first downlink control information, where the first downlink control information carries first indication information, and the first indication information is used to trigger the terminal device to report aperiodic channel state information A-CSI , correspondingly, the terminal device receives the first downlink control information;

S220. The terminal device acquires first timing information, where the first timing information is used to indicate an offset from the time unit when the terminal device receives the first downlink control information to the time unit when the A-CSI is reported value;

S230. The terminal device determines a reporting time unit of the A-CSI according to the first timing information;

S240, the terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, and correspondingly, the network device receives the The A-CSI sent by the first timing information.

Specifically, the network device may send first downlink control information to the terminal device, where the first downlink control information includes first indication information, and the first indication information may indicate whether the terminal device reports A-CSI. In an example, the first indication information is directly used to instruct the terminal device to report A-CSI, and the terminal device can determine that A-CSI needs to be reported according to the first indication information. The terminal device may acquire first timing information, where the first timing information indicates an offset value from the time unit when the terminal device receives the above-mentioned first downlink control information to the time unit when the above-mentioned A-CSI is reported (referred to as Y in this application), According to the first timing information, the terminal device can determine the reporting time unit of the A-CSI. Further, the terminal device sends the A-CSI to the network device in the determined reporting time unit.

In the information transmission method of the embodiment of the present application, the terminal device determines the offset value from the time unit when the terminal device receives the first downlink control information to the time unit when the A-CSI is reported according to the first timing information, and then determines to report the A-CSI The time unit of the A-CSI can be indicated by the first timing information, so that the terminal device reports the A-CSI at the correct time unit, thereby improving system performance.

It is worth noting that, in each embodiment of the present application, the sequence numbers of the steps do not mean the order of execution. For example, the step for the terminal device to receive the first downlink control information and the step for the terminal device to obtain the first timing information are in no particular order. The terminal device obtains the first downlink control information first, or obtains the first timing information first, or At the same time, the first downlink control information and the first timing information are acquired. In an embodiment, the terminal device determines a time unit for reporting the A-CSI according to the time unit for receiving the first downlink control information and the first timing information.

It should be understood that the foregoing time unit may be a time slot or other time units, for example, mini-slots, subframes, etc., which are not limited in this embodiment of the present application.

It should also be understood that, in this embodiment of the present application, the terminal device may obtain the above-mentioned first timing information in various ways, for example, when the first downlink control information carries related information for indicating the first timing information , then the terminal device may directly obtain the first timing information from the first downlink control information. For another example, the above-mentioned first timing information may be configured by the network device for the terminal device through high-level signaling, or predefined, this The embodiment of the application does not limit this.

As an optional embodiment, before the network device receives the A-CSI sent by the terminal device according to the first downlink control information and the first timing information, the method further includes:

The network device sends second indication information, where the second indication information is used to indicate the first timing information, and the second indication information is configured by a high layer;

Correspondingly, the terminal device obtains the first timing information, including:

The terminal device receives second indication information.

Specifically, the foregoing second indication information may be configured by a high layer. The second indication information does not indicate resource allocation. In other words, the second indication information and the information indicating resource allocation may be two completely independent pieces of information. Optionally, the second indication information may be carried in high-layer information, and the high-layer information may be radio resource control (radio resource control, RRC) signaling. Optionally, the foregoing first timing information may also be predefined, but this is not limited in this embodiment of the present application.

It should be understood that when the first downlink control information is Compact DCI, the first timing information may be configured in a high-level or predefined manner, or may be estimated from other information, which is not limited in this embodiment of the present application. The following two possible situations are explained in detail.

Case 1. The first timing information is configured or predefined by a high-level layer;

The first timing information is configured by high-layer signaling or in a predefined manner, and the first timing information indicates the offset value from the time unit when the terminal device receives the above-mentioned first downlink control information to the time unit when the above-mentioned A-CSI is reported (this application Call it Y). Such a configuration mode enables the terminal device to directly determine the offset value of the time unit for reporting the above-mentioned A-CSI, which is simple and less error-prone.

It should be understood that, on the basis of configuring the first timing information, if the above-mentioned first downlink control information schedules the PDSCH and triggers the terminal device to feed back the corresponding HARQ-ACK, the terminal device can also determine the second timing information, the second timing The information indicates an offset value from the time unit of the PDSCH scheduled by the first downlink control information to the time unit of the corresponding HARQ-ACK fed back by the terminal equipment (referred to as K1 in this application). The determination of the second timing information is divided into the following two situations:

(1) The second timing information may be configured or predefined by a high layer;

(2) The second timing information is calculated by the terminal device based on other information.

Specifically, the terminal device may use the offset value from the time unit when the terminal device receives the first downlink control information to the time unit when the terminal device receives the PDSCH scheduled by the first downlink control information (this application is referred to as the third timing Information K0) and the capability information of the terminal device to calculate the above K1, the capability information of the terminal device may be the minimum processing time of the terminal device from receiving the PDSCH to decoding and generating the corresponding ACK/NACK, but this embodiment of the application does not limit this . In this way, the second timing information calculated by the terminal device can better match the actual processing capability of the terminal device, and is more reasonable.

For (2), there are K0 and the symbol position of PDSCH transmission in the indicated time slot in Compact DCI. Since the protocol stipulates the minimum processing time N1 for terminal equipment from receiving PDSCH to decoding and generating HARQ-ACK, in this way, terminal equipment according to The last symbol position of PDSCH and N1 can determine the earliest symbol position that can report HARQ-ACK. For example, the first downlink control information is in the first three symbols of slot 1, K0=0, then the PDSCH is also in slot 1, further, the first downlink control information indicates that PDSCH occupies symbols 8, 9, 10, 11, N1 is 7 symbols, then the earliest symbol to report HARQ-ACK is symbol 5 of slot 2 (a total of 7 symbols are separated by 12, 13, 0, 1, 2, 3, and 4). Then, the terminal device can report the HARQ-ACK at slot 2 by default, corresponding to K1=1. As for which symbol in slot 2 is specifically used by the terminal device to feed back the HARQ-ACK, additional resource allocation is required.

Case 2. The first timing information is calculated by the terminal device based on other information;

It should be understood that the first timing information Y may be indicated implicitly through the first downlink control information. In this case, the first timing information is associated with resource information in the first downlink control information. The terminal device may calculate the above Y according to the location of the CSI-RS resource and the capability information of the terminal device. The capability information of the terminal device may be the minimum processing time of the terminal device from receiving the CSI-RS resource to generating the measurement report, but this is not limited in this embodiment of the present application. In this way, the first timing information calculated by the terminal device can better match the actual processing capability of the terminal device and is more reasonable.

Specifically, in Compact DCI, the A-CSI trigger byte must also indicate the location of the CSI-RS resource, including which time slot and which symbols in the time slot (usually the CSI-RS resource of this time slot), NR can specify the minimum processing time Z for the terminal device from receiving the CSI-RS resource to generating the measurement report. In this way, the terminal device can determine the earliest symbol position where A-CSI can be reported according to the position of the CSI-RS resource plus Z. For example, assuming that the first downlink control information is in the first three symbols of slot 1, and the indicated CSI-RS resource is located in slot 1, 5, 6, and Z are 3 symbols, then the earliest symbol for reporting A-CSI is slot 1 The symbol 10 (a total of 3 symbols of 7, 8, and 9 are separated in the middle). Then, the terminal device can report the A-CSI at slot1 by default, corresponding to Y=0. As for which symbol in slot 1 is used specifically, additional resource allocation is required.

Similarly, on the basis of configuring the first timing information, if the above-mentioned first downlink control information schedules the PDSCH and triggers the terminal device to feed back the corresponding HARQ-ACK, the terminal device can also determine the second timing information, the second timing The information indicates an offset value from the time unit of the PDSCH scheduled by the first downlink control information to the time unit of the corresponding HARQ-ACK fed back by the terminal equipment (referred to as K1 in this application). The determination of the second timing information is divided into the following two situations:

(1) The second timing information may be configured or predefined by a high layer;

(2) The second timing information is calculated by the terminal device based on other information.

In case 2, the determination of the second timing information is similar to case 1, and will not be repeated here.

As an optional embodiment, the first downlink control information carries third indication information, and the third indication information is used to indicate the first timing information and/or the second timing information, where the first The second timing information is used to indicate the time unit from when the terminal device receives the physical downlink shared channel PDSCH scheduled by the first downlink control information to when the terminal device feeds back the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK The offset value of the time unit;

The acquisition of the first timing information by the terminal device includes:

The terminal device determines the first timing information according to the third indication information and the first mapping relationship, where the first mapping relationship is used to indicate that the third indication information and the first timing information and the Correspondence between the second timing information.

Specifically, the above-mentioned first downlink control information also carries third indication information, and the third indication information may be used to indicate the first timing information, may be used to indicate the second timing information, or may be used to indicate the first timing information at the same time. information and second timing information. The second timing information is used to indicate an offset value from the time unit of the PDSCH scheduled by the first downlink control information to the time unit of the corresponding HARQ-ACK fed back by the terminal device. The terminal device may determine the first timing information according to the third indication information and the first mapping relationship, that is, determine an offset value from the time unit when the terminal device receives the first downlink control information to the time unit when the A-CSI is reported. It should be understood that the third indication information does not indicate resource allocation. In other words, the third indication information and the information indicating resource allocation may be two completely independent pieces of information.

In the case that the first downlink control information schedules the PDSCH, the third indication information may indicate the second timing information, and the terminal device may determine the second timing information according to the third indication information, and further determine the feedback corresponding to the PDSCH. The time unit of the first HARQ-ACK.

In the case that the first downlink control information does not schedule the PDSCH, the second timing information may still be indicated by the third indication information in the first downlink control information, except that the network device does not send the PDSCH at this time, so the terminal device There is also no need to receive the PDSCH and feed back the corresponding HARQ-ACK.

It should be understood that if the first downlink control information is Non-fallback DCI or FallbackDCI in the common search space, the above first mapping relationship can be configured to the terminal device through RRC signaling, if the first downlink control information is FallbackDCI, the above first A mapping relationship is predefined.

As an optional embodiment, the first mapping relationship includes:

The first sub-mapping relationship and/or the second sub-mapping relationship, wherein the first sub-mapping relationship is used to indicate that the first downlink control information does not trigger the terminal device to feed back the first HARQ-ACK, And when the first downlink control information triggers the terminal device to feed back the A-CSI, the correspondence between the third indication information and the first timing information, the second sub-mapping relationship It is used to indicate that when the first downlink control information triggers the terminal equipment to feed back the first HARQ-ACK and the A-CSI, the third indication information is related to the first timing information and the The corresponding relationship between the second timing information is described.

Specifically, the above-mentioned first mapping relationship may include a first sub-mapping relationship and/or a second sub-mapping relationship, and the terminal device may feed back only A-CSI (only A-CSI), based on the first sub-mapping relationship, Determine the first timing information according to the third indication information. At this time, the third indication information is used to indicate the first timing information; the terminal device may feed back the A-CSI and the first HARQ-ACK according to the second sub-mapping relationship , determining the first timing information and the second timing information according to the third indication information, where the third indication information is used to indicate the first timing information and the second timing information.

It should be understood that the foregoing first mapping relationship may also include a third sub-mapping relationship, where the third sub-mapping relationship is used to indicate that the first downlink control information triggers that the terminal device needs to feed back the HARQ-ACK, and the When the first downlink control information does not trigger the terminal device to feed back the A-CSI, the corresponding relationship between the value of the third indication information and the second timing information. In this way, when only HARQ-ACK (only HARQ-ACK) is fed back, the terminal device can determine the second timing information based on the third sub-mapping relationship and according to the third indication information. At this time, the third indication information is used to indicate the first 2. Timing information.

It should also be understood that in the embodiment of the present application, it is possible that the first downlink control information does not support the situation where the terminal device is only triggered to feed back A-CSI and does not schedule the PDSCH, then the first downlink control information needs to trigger the terminal device at the same time The A-CSI and the HARQ-ACK corresponding to the PDSCH scheduled by the first downlink control information are fed back. At this time, the above-mentioned first mapping relationship does not include the first sub-mapping relationship.

As an optional embodiment, the above-mentioned first mapping relationship may only include a fourth sub-mapping relationship, and the fourth sub-mapping relationship is used to indicate that the third indication information and the first timing information and the second timing information Correspondence between timing information.

In this case, regardless of whether the first downlink control information triggers the terminal device to feed back HARQ-ACK, the terminal device may always determine the first timing information according to the fourth sub-mapping relationship and the third indication information. Similarly, no matter whether the above-mentioned first downlink control information triggers the terminal device to feed back A-CSI, the terminal device may always determine the second timing information according to the fourth sub-mapping relationship and the third indication information.

The foregoing first mapping relationship may be configured through high-layer signaling, or may be predefined, which is not limited in this embodiment of the present application. When the first indication information is Fallback DCI or Fallback DCI in the common search space, the first mapping relationship is predefined, and in other cases, the first mapping relationship may be configured through high-level signaling.

As an optional embodiment, the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information schedules a PDSCH and trigger the terminal device to feed back The corresponding first HARQ-ACK;

The terminal device determines the first timing information according to the third indication information and the first mapping relationship, including:

The terminal device determines the first timing information according to the third indication information, the fourth indication information, and the first mapping relationship.

Specifically, the above-mentioned first downlink control information may also carry fourth indication information for indicating whether the first downlink control information schedules the PDSCH and triggers the terminal device to feed back the corresponding first HARQ-ACK, and the terminal device according to the fourth The indication information is used to determine whether to feed back the HARQ-ACK, and to further determine which sub-mapping relationship in the first mapping relationship to use, so as to determine the first timing information.

It should be understood that the foregoing fourth indication information may be in an explicit indication manner or in an implicit indication manner, which is not limited in this embodiment of the present application. For the explicit indication mode, a certain bit can be explicitly used for direct indication; for the implicit indication mode, it can be realized through some existing parameter combinations, for example, when the HARQ ID, new data indicator (new data indicator, NDI ), redundancy version (redundancy version, RV) ID, modulation coding strategy (modulation coding strategy, MCS) when the values are certain or certain fixed combinations, it means that the network equipment does not schedule PDSCH; and for example, when the value of MCS is A certain value, and when the number of resource elements (ResourceElements, REs) allocated by the time-frequency resource allocation indication is less than a certain value, it means that the network device does not schedule the PDSCH, but this embodiment of the present application does not limit it.

As an optional embodiment, the third indication information is used to indicate the second timing information, and the first downlink control information further includes seventh indication information, and the seventh indication information is used to indicate the third timing information. information, the third timing information is used to indicate the offset from the time unit when the terminal device receives the first downlink control information to the time unit when the terminal device receives the PDSCH scheduled by the first downlink control information value;

The terminal device determines the first timing information according to the third indication information, including:

The terminal device determines the first timing information according to the second timing information, the third timing information, and a second mapping relationship, where the second mapping relationship is used to indicate the second timing information, Correspondence between the third timing information and the first timing information.

Specifically, the third timing information is used to indicate the offset value from the time unit when the terminal equipment receives the first downlink control information to the time unit when the terminal equipment receives the PDSCH scheduled by the first downlink control information (this application is referred to as the first downlink control information Three timing information K0). The first downlink control information may carry information respectively indicating K0 and K1, and the terminal device determines K0 and K1 according to the first downlink control information, and then combines the second mapping relationship to determine the first timing information Y.

It should be understood that the seventh indication information may also indicate time-domain resource allocation information of the PDSCH scheduled by the first downlink control information, but this embodiment of the present application does not limit this.

Optionally, the above-mentioned second mapping relationship is used to represent Y=K0+K1, that is, the A-CSI and HARQ-ACK fed back by the terminal device are in the same time unit, or even the same PUCCH resource in the same time unit. The embodiment of the application does not limit this.

It should be understood that when the first downlink control information does not schedule PDSCH transmission, that is, it does not trigger the terminal equipment to feedback

In the case of HARQ-ACK, the above K0 and K1 have no actual physical meaning, but the terminal device only needs to determine Y according to the values of K0 and K1 in the above manner.

As an optional embodiment, the first downlink control information further carries fifth indication information, and the fifth indication information is used to indicate a power control command of the PUCCH carrying the A-CSI;

Before the terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, the method further includes:

determining, by the terminal device, the transmission power of the A-CSI according to the fifth indication information;

The terminal sends the A-CSI to the network device in the reporting time unit of the A-CSI, including:

The terminal device sends the A-CSI to the network device by using the sending power of the A-CSI in the reporting time unit of the A-CSI.

Specifically, the first downlink control information may also carry fifth indication information for indicating the power control command of the PUCCH carrying A-CSI, and the terminal device may determine the transmission power of the A-CSI according to the fifth indication information. , and then use the sending power to send the A-CSI to the network device.

As an optional embodiment, the fifth indication information is used to indicate the power control command of the PUCCH carrying the first HARQ-ACK, and the power control command of the PUCCH carrying the A-CSI is related to the power control command of the PUCCH carrying the A-CSI The power control commands of the PUCCH of the first HARQ-ACK are the same.

Specifically, the fifth indication information may be information originally used to indicate the power control command of the PUCCH carrying the first HARQ-ACK. In this embodiment of the present application, the fifth indication information is additionally used to indicate that the A-CSI The power control command of the PUCCH. In this case, the following three statements may exist, which are not limited in this embodiment of the present application.

(1) The power control command of the PUCCH carrying the A-CSI is the same as the power control command of the PUCCH carrying the HARQ-ACK;

(2) The power control of the PUCCH carrying the A-CSI follows (follow) the power control command of the PUCCH carrying the HARQ-ACK;

(3) The PUCCH carrying the A-CSI multiplexes the power control command of the PUCCH carrying the HARQ-ACK.

As an optional embodiment, before the network device receives the A-CSI sent by the terminal device according to the first downlink control information and the first timing information, the method further includes:

The network device sends second downlink control information, the second downlink control information is used to trigger the terminal device to feed back the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information, and the second HARQ - the feedback time unit of the ACK is the same as the reporting time unit of the A-CSI;

Correspondingly, the terminal device receives the second downlink control information;

The terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, including:

According to the first downlink control information and the second downlink control information, the terminal device compares the information bits of the A-CSI and the information bits of the second HARQ-ACK in the reporting time unit of the A-CSI The information bits are jointly encoded to generate encoded information;

The terminal device sends the encoded information to the network device.

Specifically, the network device may also send other downlink control information to the terminal device. In this application, the downlink control information sent by the network device before sending the first downlink control information is collectively referred to as the second downlink control information. The second downlink control information It is used to trigger the terminal device to feed back the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information. For ease of understanding, in this document, the HARQ-ACK corresponding to the PDSCH scheduled by the first downlink control information is called the first HARQ-ACK, and the HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information is called the second HARQ-ACK. In addition, the number of the second downlink control information may be one or more, and the number of corresponding second HARQ-ACKs may also be one or more, which is not limited in this embodiment of the present application.

After receiving the second downlink control information and the first downlink control information, the terminal device may determine that the second HARQ-ACK triggered by the second downlink control information needs to be at the same time as the A-CSI triggered by the first downlink control information Therefore, the terminal device can jointly encode the information bits of the A-CSI and the information bits of the second HARQ-ACK at the reporting time unit of the A-CSI, and send the encoded information to the network device.

It should be understood that the embodiment of the present application emphasizes that two DCIs trigger the reporting of A-CSI and HARQ-ACK respectively, that is, the first downlink control information triggers the terminal device to feed back A-CSI, and the second downlink control information triggers the terminal device to feed back the second Two HARQ-ACKs are fed back in the same time unit. The first downlink control information may trigger the terminal device to feed back the first HARQ-ACK, or may not trigger the terminal device to feed back the first HARQ-ACK. If the first downlink control information triggers the terminal device to feed back the first HARQ-ACK, the first The HARQ-ACK is fed back in different time units from the above-mentioned A-CSI.

In addition, the terminal device may discard the second HARQ-ACK and only send the A-CSI for the A-CSI and the second HARQ-ACK that need to be fed back within the same time unit. Similarly, the terminal device may also discard the A-CSI and only send the second HARQ-ACK for the A-CSI and the second HARQ-ACK that need to be fed back within the same time unit. This embodiment of the present application does not limit it.

It should be understood that when the first downlink control information also triggers the terminal device to feed back the first HARQ-ACK, and the first HARQ-ACK is fed back in the same time unit as the above-mentioned A-CSI, the terminal device needs to perform the first HARQ - The information bits of the ACK, the second HARQ-ACK and the A-CSI are jointly encoded, and the encoded information bits are transmitted.

In addition, the terminal device may discard the first HARQ-ACK and the second HARQ-ACK for the A-CSI, the first HARQ-ACK and the second HARQ-ACK that need to be fed back in the same time unit, and only send the A-CSI. Similarly, the terminal device can also discard A-CSI for the A-CSI, first HARQ-ACK, and second HARQ-ACK that need to be fed back within the same time unit, and only send the first HARQ-ACK and second HARQ-ACK . This embodiment of the present application does not limit it.

As an optional embodiment, in the case that the first downlink control information only triggers the terminal device to feed back the A-CSI, the first downlink control information further includes sixth indication information, the The sixth indication information is used to indicate that before the end of the first downlink control information, the PDSCH is scheduled and indicates that the corresponding second HARQ-ACK needs to be fed back within the reporting time unit of the A-CSI. the number of messages;

Before the terminal device jointly encodes the information bits of the A-CSI and the information bits of the second HARQ-ACK in the reporting time unit of the A-CSI, the method further includes:

The terminal device determines the HARQ-ACK codebook that needs to be fed back within the reporting time unit of the A-CSI according to the sixth indication information;

The terminal device generates information bits of the second HARQ-ACK according to the HARQ-ACK codebook.

Specifically, the above-mentioned first downlink control information only triggers the terminal device to feed back A-CSI, and the first downlink control information also carries sixth indication information (specifically, it may be a downlink assignment index counter (DAI_counter)), It is used to indicate that the PDSCH is scheduled before the end of the first downlink control information, and indicates the number of second downlink control information that needs to be fed back within the reporting time unit of the A-CSI for the corresponding second HARQ-ACK. After receiving the first downlink control information, the terminal device can determine the HARQ-ACK codebook that needs to be fed back within the A-CSI reporting time unit according to the sixth indication information, and generate the second HARQ-ACK codebook according to the HARQ-ACK codebook. ACK information bits. Further, jointly encode the information bits of the generated second HARQ-ACK and the information bits of the A-CSI, and send the encoded information to the network device in the reporting time unit of the A-CSI.

In this embodiment of the present application, the terminal device determines, according to the sixth indication information in the first downlink control information, that the PDSCH is scheduled before the first downlink control information and indicates that the corresponding second HARQ-ACK needs to be sent in the first downlink control information. The downlink control information triggers the number of the second downlink control information fed back in the A-CSI reporting time unit reported by the terminal device, and determines the HARQ-ACK codebook that needs to be fed back in the A-CSI reporting time unit, so that the terminal device Even if the previous second downlink control information is not received or missed, the corresponding HARQ-ACK can be fed back in the first downlink control information, thereby improving data transmission performance.

For ease of understanding, the present application will be described in detail below in conjunction with specific embodiments.

In this embodiment of the application, Y represents the offset value from the time unit when the terminal device receives the first downlink control information to the time unit when reporting A-CSI, and K1 represents the time unit from the time unit of the PDSCH scheduled by the first downlink control information to the terminal The device feeds back the offset value of the corresponding HARQ-ACK time unit, and K0 represents the offset from the time unit when the terminal device receives the first downlink control information to the time unit when the terminal device receives the PDSCH scheduled by the first downlink control information value.

In the following embodiments, for ease of description, the first downlink control information is the first DCI, the second downlink control information is the second DCI, and the time unit is a time slot as an example for illustration.

Embodiment one

Step 1, the terminal device receives the first mapping relationship configured by the high layer, specifically the table used to determine K1 and Y, as shown in Table 1 below, which specifies the 3-bit time domain indication information Timing Indicator in the first DCI (the original PDSCH-to-HARQ-Timing indicator, corresponding to the above third indication information) and the first mapping relationship between K1 and Y. The first mapping relationship includes three sub-mapping relationships, corresponding to Only HARQ (the first DCI only triggers the terminal equipment to feedback HARQ-ACK), Only A-CSI (the first DCI only triggers the terminal equipment to feedback A-CSI) and JointHARQ and A - three cases of CSI (the first DCI triggers the joint feedback of A-CSI and HARQ-ACK by the terminal device). It should be understood that the 3 bits of the time domain indication information here is just an example, and the time domain indication information may also have other number of bits, which is not limited here.

Table I

Specifically, for Fallback DCI or Fallback DCI in a more strict public search space (Fallback DCI in Common Search Space), Table 1 is predefined, such as a _1,j =j+1, etc. where /> Indicates the rounding down operation.

For b _2,j , you can refer to A-CSI on PUSCH, set b _2,j =m _i axY _i (j), where Y _i (j) is the configuration in the i-th A-CSI report triggered by the CSI-Request field The jth optional slot offset value for . For A-CSI onS-PUCCH, one implementation method is to only support the reporting of one A-CSI, and does not support the joint transmission of A-CSI of multiple component carriers (CCs) on one S-PUCCH. Therefore, the above The configuration can be simplified as b _2,j =Y(j), where Y(j) is the jth optional time slot offset configured in the A-CSI report triggered by the CSI-Request field.

It should be understood that a simple extension is that the parameter b _i,j configured by the high layer is actually the time slot offset value of the terminal device from receiving CSI-RS to feeding back A-CSI, where the time slot for CSI-RS transmission is determined by the CSI-RS Resource indication, CSI-RS resources are associated with A-CSI, and A-CSI is indicated by a CSI request field in the first DCI.

In step 2, the terminal device receives the above-mentioned first DCI at slot#n, wherein the CSI request field is non-zero, which means that the first CSI triggers the reporting of one or one group of A-CSI.

If the first DCI only triggers the terminal device to feed back A-CSI, as shown in Figure 3, the terminal device can determine Y=b _2,j according to the value j of the 3-bit Timing indicator in the first DCI;

If the first DCI triggers the terminal device to jointly feed back A-CSI and the first HARQ-ACK, as shown in Figure 4, the terminal device can determine Y=b _3,j according to the value j of the 3-bit Timing indicator in the first DCI .

Finally, the terminal device determines that the time slot for feeding back the A-CSI triggered by the first DCI is slot#(n+Y).

Step 3. The terminal device determines that the S-PUCCH resource for transmitting A-CSI in slot#(n+Y) is PUCCHResource1, and adjusts the S-PUCCH resource according to the 2-bit transmit power control (TPC) command in the first DCI. The transmission power p1 of the PUCCH resource. It should be understood that the 2 bits of the TPC command is just an example, and the TPC command may also have other number of bits, which is not limited here.

Step 4, the terminal device determines the HARQ-ACK codebook transmitted in slot#(n+Y) according to the DAI_counter and DAI_total in the first DCI, where for some DCIs only triggers the terminal device to feed back A-CSI, where DAI_counter and DAI_total Consistent with the previous DCI. Further, the terminal device determines that the PUCCH resource for transmitting HARQ-ACK in slot#(n+Y) is PUCCH Resource 2, and the transmission power is p2.

Specifically, if PUCCH Resource 1 and PUCCH Resource 2 overlap in time domain, or do not overlap (but are located in the same time slot), the terminal device can jointly transmit HARQ-ACK and A-CSI. The terminal device calculates the total uplink control information (uplink control information, UCI) size: HARQ-ACK codebook size and A-CSI load size, and the terminal device determines the last DCI for scheduling HARQ-ACK and/or A-CSI. The terminal device re-determines new PUCCH resources for carrying HARQ-ACK and A-CSI according to the total UCI size and the resource indication in the last DCI, and adjusts the PUCCH transmission power according to the TPC in the last DCI. If the time domains of PUCCH Resource 1 and PUCCH Resource 2 do not overlap, the terminal device can use power p1 to send A-CSI on PUCCH Resource 1.

In the embodiment of the present application, the PDSCH-to-HARQ-Timing byte in the DCI is used to jointly indicate the timing information K1 of HARQ and/or the timing information Y of A-CSI. Specifically, the byte is in three situations (Only HARQ, Only A-CSI, Joint HARQ and A-CSI) have different interpretations, so that the reporting timing information of A-CSI can be flexibly indicated to match the requirements of terminal equipment without increasing the DCI load. CSI measures time, thereby improving system performance.

Optionally, the first mapping relationship may only have the fourth column in Table 1 (namely Joint HARQ and A-CSI). In this case, regardless of whether the first DCI schedules the terminal equipment to feed back A-CSI or the first HARQ- ACK, the timing information of the first HARQ-ACK and A-CSI are all searched according to this column, that is, a _3,j =a _2,j , and b _3,j =b _2,j .

Embodiment two

The first DCI is the Compact DCI. At this time, the Compact DCI does not include the PDSCH-to-HARQ-Timing byte, which triggers the terminal device to report the A-CSI.

Step 1. The terminal device receives the high-level configuration information of K1 and Y. The configuration information has the following two potential forms:

The first configuration: the high-level directly configures K1 and Y. At this time, Table 2 stipulates that the first DCI only triggers HARQ-ACK, only triggers A-CSI, and jointly triggers HARQ-ACK and A-CSI. HARQ-ACK The timing information K1 of A-CSI and the timing information Y of A-CSI;

Table II

Case index Slot Offset for HARQ-ACK and/or A-CSI reporting Only HARQ a ₁ Only A-CSI b ₂ Joint HARQ and A-CSI (a ₃ ,b ₃ )

Similarly, Table 2 may only have the fourth row (Joint HARQ and A-CSI), which means that regardless of whether the first DCI schedules the terminal device to trigger A-CSI or the first HARQ-ACK, the first HARQ-ACK and A- The timing information of the CSI is determined according to (a ₃ , b ₃ ).

The second configuration: the upper layer configures the calculation method of K1 and Y, as shown in Table 3, where K1 is required to generate ACK/NACK according to the timing K0 of PDSCH, the end symbol n _CSI-RS of PDSCH, and the decoding of terminal equipment data The minimum time N1 is decided, and Y is determined according to the timing X of CSI-RS, the end symbol n CSI-RS of _CSI-RS and the minimum time Z required for CSI measurement, where Indicates the number of symbols contained in 1 slot, taking NR as an example, for the normal cyclic prefix, /> For extended cyclic prefixes, />

Table three

Step 2, the terminal device receives the first DCI at slot#n, where the CSI request field is non-zero, which means that the first DCI triggers one A-CSI report. For the first configuration, the terminal device can directly determine Y=b ₂ or Y=b ₃ according to Table 2 according to the first DCI triggering HARQ-ACK and/or A-CSI; for the second configuration, the terminal The device can obtain the CSI-RS timing K0 and the end symbol n _CSI-RS of the CSI-RS, and use the formula in Table 3 to calculate according to the Z configured by the upper layer

For example, suppose The first DCI is in the first three symbols of slot 1, K0=0, then PDSCH is also in slot 1, further, the first DCI indicates that PDSCH occupies symbols 8, 9, 10, 11, that is, n _PDSCH = 11, N1 is 7 symbols, then The earliest symbol for reporting HARQ-ACK is symbol 5 of slot 2 (a total of 7 symbols are separated by 12, 13, 0, 1, 2, 3, and 4). Then, the terminal device can report the HARQ-ACK at slot 2 by default.

As another example, suppose The first DCI is in the first three symbols of slot 1, X=0, and the indicated CSI-RS resources are located at 5 and 6 in slot 1, that is, n _CSI-RS =6, Z is 3 symbols, then /> The earliest symbol for reporting A-CSI is symbol 10 of slot 1 (a total of 3 symbols separated by 7, 8, and 9). Then, the terminal device can report the A-CSI at slot 1 by default.

Further, the terminal device may determine, according to Y, that the time slot for feeding back the A-CSI is #(n+Y).

Step 3 and step 4 are the same as those in Embodiment 1, and will not be repeated here.

Embodiment three

Step 1, the terminal device receives the second mapping relationship configured by the upper layer: (K ₀ , K ₁ )→Y.

Specifically, the second mapping relationship can be a table, the table includes 3 columns, the first column and the second column in each row are the values of _K0 and _K1 respectively, and the third column is the value of the corresponding Y . The mapping relationship may also be a function Y=f(K ₀ , K ₁ ), and one implementation method is Y=f(K ₀ , K ₁ )=K ₀ +K ₁ .

Step 2, the terminal device receives the first DCI at slot#n, wherein the CSI request field is non-zero, which means that the first DCI triggers the reporting of one or one group of A-CSI.

If the first DCI only triggers the terminal device to feed back A-CSI, as shown in Figure 3, the terminal device can determine the values of K ₀ and K ₁ according to high-level configuration or predefined; or, as shown in Figure 5, the terminal The device determines the feedback delay K0 of the virtual PDSCH according to the Time Domain Allocation information in the first DCI, and determines the feedback delay K1 of the virtual HARQ according to the 3-bit PDSCH-to-HARQ-Timing. At this time, K0 and K1 have no physical meaning.

If the first DCI triggers the terminal device to jointly feed back A-CSI and HARQ-ACK, as shown in Figure 4, the terminal device can determine the PDSCH feedback delay K0 according to the Time Domain Allocation in the first DCI, and according to the 3-bit PDSCH -to-HARQ-Timing determines the HARQ feedback delay K1.

Further, the terminal device determines, according to K0, K1 and the above-mentioned second mapping relationship configured by the upper layer, that the time slot for feeding back the A-CSI is #(n+Y).

Step 3 and step 4 are the same as those in Embodiment 1, and will not be repeated here.

In the embodiment of the present application, the terminal device can use the second mapping relationship to determine the reporting timing information Y of A-CSI according to the parameters K0 and K1 originally indicated by the DCI, without increasing the load size of the DCI, and can simply realize Y=K0 +K1, so as to ensure that A-CSI and HARQ-ACK are transmitted in the same time slot, combined with the PUCCH resource allocation of A-CSI and HARQ-ACK, it can ensure that the two use the same PUCCH resource, so as to perform joint coding transmission, which is simpler to implement , with minor changes to the protocol.

Embodiment Four

The first DCI is the Compact DCI. At this time, the Compact DCI does not include the PDSCH-to-HARQ-Timing byte, which triggers the terminal device to report the A-CSI.

Step 1 is similar to Step 1 in the third embodiment above, and will not be repeated here.

Step 2, the terminal device receives the first DCI at slot#n, wherein the CSI request field is non-zero, which means that the first DCI triggers the reporting of one or one group of A-CSI.

If the first DCI only triggers the terminal device to feed back A-CSI, the terminal device determines the values of K ₀ and K ₁ according to high-level configuration or predefined; if the first DCI triggers the terminal device to jointly feed back A-CSI and HARQ-ACK, The terminal device determines the timing information K0 of the PDSCH and the end symbol n _PDSCH of the PDSCH according to the Time Domain Allocation in the first DCI, and further according to K0, n _PDSCH and the minimum time N for decoding and generating ACK/NACK of the terminal device data configured by the upper layer ₁ , calculate K1.

Further, the terminal device determines, according to K0, K1 and the above-mentioned second mapping relationship configured by the upper layer, that the time slot for feeding back the A-CSI is #(n+Y).

For step 4 in the above embodiment, the terminal device determines the HARQ-ACK codebook transmitted in slot#(n+Y) according to the DAI_counter and DAI_total in the first DCI, which will be described in detail as another embodiment below. In the following embodiments, the first DCI only triggers the terminal device to feed back the A-CSI.

Among them, DAI_counter indicates that as of the current DCI, several PDCCHs have scheduled PDSCHs and indicates that the corresponding ACK/NACK needs to be fed back within the time unit of A-CSI feedback. DAI_total indicates that up to the present PDCCHoccasion, several PDCCHs have scheduled PDSCHs and indicate that the corresponding ACK/NACK needs to be fed back within the time unit of A-CSI feedback.

Embodiment five (as shown in Figure 6)

Step 1, the network device sends the second DCI at slot#n (or more generally, at the PDCCH monitoring occasion (monitoringoccasion) 1), the second DCI schedules the corresponding PDSCH and triggers the terminal device at slot#(n+k ) to report the second HARQ-ACK, where k>=1. It is assumed that the network device has not sent the second DCI to indicate that the second HARQ-ACK needs to be reported in slot#(n+k), therefore, the DAI_counter in the second DCI is set to 1.

In step 2, the terminal device receives the second DCI at slot#n (or more generally, at PDCCH occasion 1), and the reception fails.

Step 3, the network device sends the first DCI at slot#(n+1) (or more generally, at PDCCH occasion 2), and the first DCI triggers the terminal device to report A-CSI at slot#(n+k). At this time, DAI_counter in the first DCI is set to 1.

Step 4, the terminal device receives the first DCI at slot#(n+1) (or more generally, at PDCCH occasion 2), and the reception is successful. According to the DAI_counter indication in the first DCI, the terminal device finds that one DCI was missed before scheduling the PDSCH and instructs the terminal device to report the second HARQ-ACK at slot#(n+k). n+k) The number of second HARQ-ACK codebooks to be fed back is 1, and A-CSI needs to be reported.

Further, the terminal device performs joint feedback according to the HARQ-ACK codebook, the A-CSI load, and the PUCCH resource of the A-CSI scheduled by the first DCI.

Embodiment six (as shown in Figure 7)

This embodiment is specifically aimed at a multi-carrier scenario. At this time, DAI_counter and DAI_total in the first DCI need to be set to the values in the previous DCI, indicating the count of HARQ-ACK codebooks to be multiplexed in the same time slot.

Step 1, the network device transmits the second DCI (DCI 1 and DCI 2 respectively) on CC1 and CC2 of slot#n (or more generally, in PDCCH occasion 1), and DCI 1 and DCI 2 respectively schedule the corresponding The PDSCH triggers the terminal device to report the corresponding second HARQ-ACK at slot#(n+k), where k>=1. Assume that the network device has not sent a DCI instruction before and needs to report the second HARQ-ACK in slot#(n+k), so (DAI_counter,DAI_total) in DCI 1 and DCI 2 are set to (1,2) and (2, 2).

Step 2, the terminal device receives DCI1 and DCI 2 respectively at slot#n (or more generally, at PDCCH occasion 1), and determines that the second HARQ-ACK codebook reported at slot#(n+k) is 2.

Step 3, the network device sends the second DCI (DCI 3) and the first DCI (DCI 4) respectively on CC1 and CC2 of slot#(n+1) (or more generally, on PDCCH occasion 2), where DCI 3 schedules the corresponding PDSCH and instructs the terminal device to report the second HARQ-ACK at slot#(n+k), and DCI 4 triggers the terminal device to report A-CSI at slot#(n+k). At this time, (DAI_counter, DAI_total) in DCI 3 and DCI 4 are respectively set to (3,3) and (3,3).

In step 4, the terminal device receives DCI 3 and DCI 4 respectively in slot#(n+1) (or more generally, in PDCCH occasion 2), wherein the reception of DCI 3 fails and the reception of DCI 4 succeeds. According to the (DAI_counter, DAI_total) indication in DCI 4, the terminal device finds that a DCI that schedules a PDSCH is missed on the current PDCCH occasion and instructs the terminal device to report HARQ-ACK at slot#(n+k). Therefore, the The terminal device determines that the number of HARQ-ACK codebooks that needs to be fed back at slot#(n+k) is 3, and needs to report A-CSI.

Further, the terminal device performs joint transmission according to the HARQ-ACK codebook, the load of the A-CSI, and the PUCCH resource of the A-CSI scheduled by DCI 4 .

In this embodiment of the present application, for the case where the first DCI only triggers A-CSI, the DAI_counter and DAI_total in the first DCI are multiplexed to indicate the size of the HARQ codebook that needs to be fed back on the same time slot so far. In this way, even if the previous second DCI is lost, the terminal device can accurately determine the HARQ codebook through the DAI information in the current first DCI, so as to feed back the HARQ-ACK corresponding to the second DCI.

The following describes in detail how the terminal device determines the HARQ codebook according to the DAI_counter and DAI_total.

For the fifth embodiment, assuming that there is only DAI_counter, DAI_counter is 2 bits, and the values are '00', '01', '10', '11', and the values are i=0, 1, 2, 3 respectively. The terminal device receives the first DCI, where K0 and K1 jointly indicate which time slot is used to feed back the A-CSI. For time slot n, the terminal device can identify which DCIs exist before the first DCI, and the scheduled PDSCH needs to feed back the second HARQ-ACK in time slot n. These DCIs are called Related DCI (ie, the second DCI above) in this paper.

For a Related DCI, DAI_counter=i in it indicates that the PDSCH scheduled by the Related DCI is the j=4k+i+1 PDSCH, where k is an integer greater than or equal to 0. The terminal device receives the first RelatedDCI and indicates that HARQ-ACK needs to be fed back at slot n, and the terminal device can determine the number j of the PDSCH scheduled by the Related DCI according to the value i of the DAI_counter, assuming k=0.

The terminal device continues to receive Related DCI. For a Related DCI, if the value i1 of DAI_counter is smaller than the value i2 of DAI_counter in the previous Related DCI, k=k+1; if the value i2 of DAI_counter in a Related DCI It is equal to the value i1 of DAI_counter in the previous Related DCI plus 1, that is, i2=i1+1, and the terminal device can consider that there is no related DCI missed in the middle of the two DCIs; :

For i2>i1+1, it is considered that i2-i1-1 is missed;

For i2<=i1+1, it is considered that 4+(i2-i1-1) were missed.

For Embodiment 6, assuming that there are DAI_counter and DAI_total, then DAI_counter and DAI_total are both 2 bits, and the values are '00', '01', '10', '11' respectively, and the values are i=0, 1, 2 respectively , 3. The terminal device receives the first DCI, where K0 and K1 jointly indicate which time slot is used to feed back the A-CSI. For time slot n, the terminal device can identify which DCIs exist before the first DCI, and the scheduled PDSCH needs to feed back the second HARQ-ACK in time slot n. These DCIs are referred to herein as Related DCI (that is, the second DCI above) .

All Related DCI can be divided into multiple groups according to the PDCCH monitoring occasion, and each group corresponds to DCI on different carrier CCs on one occasion. For a Related DCI, DAI_counter=i means that the PDSCH scheduled by the Related DCI is the jth=4k+i+1 PDSCH, where k is an integer greater than or equal to 0; DAI_total=p means the current occasion , the number of PDSCHs that need to feed back the HARQ-ACK on slot n is q=4s+p+1, where s is an integer greater than or equal to 0.

The terminal device receives the first Related DCI on the first occasion, indicating that it needs to feed back HARQ-ACK at slot n, and determines the number j of the PDSCH scheduled by the Related DCI according to the value i of the DAI_counter, assuming k=0; then the The terminal device continues to receive the Related DCI of other CCs on the occasion, and then transfers to the next occasion after receiving. Within each occasion, the determination method of PDSCH number j is the same as above, but in the last Related DCI, if DAI_counter is not equal to DAI_total, it is considered that the Related DCI was missed on the occasion, specifically:

For DAI_counter<DAI_total, it is considered that DAI_total-DAI_counter has been missed;

For DAI_counter>DAI_total, it is considered that DAI_total+4-DAI_counter were missed.

After determining the number of related DCIs missed, the terminal device can determine the HARQ codebook, so as to perform joint encoding with the A-CSI scheduled by the first DCI, and feed back the information to the network device in the A-CSI reporting time slot. HARQ-ACK corresponding to A-CSI and Related DCI.

It should be understood that the sequence numbers of the above processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

The information transmission method according to the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 7 , and the information transmission device according to the embodiment of the present application will be described in detail below in conjunction with FIG. 8 to FIG. 11 .

FIG. 8 shows an information transmission device 800 provided by an embodiment of the present application. The device 800 includes:

The receiving unit 810 is configured to receive first downlink control information, where the first downlink control information carries first indication information, and the first indication information is used to trigger the apparatus to perform aperiodic channel state information A-CSI report;

The processing unit 820 is configured to acquire first timing information, where the first timing information is used to indicate an offset value from a time unit when the device receives the first downlink control information to a time unit when the A-CSI is reported;

The processing unit 820 is also used for:

Determine the reporting time unit of the A-CSI according to the first timing information;

The sending unit 830 is configured to send the A-CSI to the network device in the reporting time unit of the A-CSI.

In the information transmission device of the embodiment of the present application, the terminal device determines the offset value from the time unit when the terminal device receives the first downlink control information to the time unit when the A-CSI is reported according to the first timing information, and then determines to report the A-CSI The time unit of the A-CSI can be indicated by the first timing information, so that the terminal device reports the A-CSI at the correct time unit, thereby improving system performance.

Optionally, the receiving unit 810 is specifically configured to: receive second indication information, where the second indication information is used to indicate the first timing information, and the second indication information is configured by a high layer.

Optionally, the first downlink control information carries third indication information, and the third indication information is used to indicate the first timing information and/or the second timing information, where the second timing information uses The offset value from the time unit indicating that the device receives the physical downlink shared channel PDSCH scheduled by the first downlink control information to the time unit when the device feeds back the corresponding first hybrid automatic repeat request-confirmation HARQ-ACK The processing unit 820 is specifically configured to: determine the first timing information according to the third indication information and the first mapping relationship, where the first mapping relationship is used to indicate that the third indication information and the first mapping relationship A corresponding relationship between certain timing information and the second timing information.

Optionally, the first mapping relationship includes: a first sub-mapping relationship and/or a second sub-mapping relationship, where the first sub-mapping relationship is used to indicate that the first downlink control information does not trigger the When the device feeds back the first HARQ-ACK, and the first downlink control information triggers the device to feed back the A-CSI, the distance between the third indication information and the first timing information Corresponding relationship, the second sub-mapping relationship is used to indicate that when the first downlink control information triggers the device to feed back the first HARQ-ACK and the A-CSI, the third indication information Correspondence with the first timing information and the second timing information.

Optionally, the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information schedules a PDSCH and trigger the device to feed back the corresponding first downlink control information. A HARQ-ACK; the processing unit 820 is specifically configured to: determine the first timing information according to the third indication information, the fourth indication information, and the first mapping relationship.

Optionally, the first downlink control information also carries fifth indication information, where the fifth indication information is used to indicate a power control command of the PUCCH carrying the A-CSI; the processing unit 820 is further configured to: According to the fifth indication information, determine the sending power of the A-CSI; the sending unit 830 is specifically configured to: use the sending power of the A-CSI to the network in the reporting time unit of the A-CSI The device sends the A-CSI.

Optionally, the fifth indication information is used to indicate the power control command of the PUCCH carrying the first HARQ-ACK, and the power control command of the PUCCH carrying the A-CSI is the same as the power control command of the PUCCH carrying the first HARQ-ACK. The power control commands of the PUCCH of HARQ-ACK are the same.

Optionally, the receiving unit 810 is further configured to: receive second downlink control information, where the second downlink control information is used to trigger the device to feed back the second HARQ- ACK, and the feedback time unit of the second HARQ-ACK is the same as the reporting time unit of the A-CSI; the processing unit 820 is further configured to: according to the first downlink control information and the second downlink Control information, performing joint encoding on the information bits of the A-CSI and the information bits of the second HARQ-ACK in the reporting time unit of the A-CSI to generate encoded information; the sending unit 830 specifically uses In: sending the encoded information to the network device.

Optionally, in the case where the first downlink control information only triggers the device to feed back the A-CSI, the first downlink control information further includes sixth indication information, and the sixth indication information uses Schedule the PDSCH and indicate the number of the second downlink control information that the corresponding second HARQ-ACK needs to feed back within the reporting time unit of the A-CSI before indicating that the first downlink control information ends; The processing unit 820 is further configured to: according to the sixth indication information, determine the HARQ-ACK codebook that needs to be fed back within the reporting time unit of the A-CSI; generate the first HARQ-ACK codebook according to the HARQ-ACK codebook Two information bits of HARQ-ACK.

It should be understood that the device 800 here is embodied in the form of functional units. The term "unit" herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group of processors) for executing one or more software or firmware programs. processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the apparatus 800 may specifically be the terminal device in the above embodiment, and the apparatus 800 may be used to execute various processes and/or steps corresponding to the terminal device in the above method embodiment, To avoid repetition, details are not repeated here.

FIG. 9 shows another information transmission device 900 provided by the embodiment of the present application. The device 900 includes:

A sending unit 910, configured to send first downlink control information, where the first downlink control information carries first indication information, and the first indication information is used to trigger the terminal device to perform aperiodic channel state information A-CSI reporting;

The receiving unit 920 is configured to receive the A-CSI sent by the terminal device according to the first downlink control information and first timing information, where the first timing information is used to indicate that the terminal device receives the first An offset value from the time unit of the downlink control information to the time unit of reporting the A-CSI.

In the information transmission device of the embodiment of the present application, the terminal device determines the offset value from the time unit when the terminal device receives the first downlink control information to the time unit when the A-CSI is reported according to the first timing information, and then determines to report the A-CSI The time unit of the A-CSI can be indicated by the first timing information, so that the terminal device reports the A-CSI at the correct time unit, thereby improving system performance.

Optionally, the sending unit 910 is further configured to: send second indication information before receiving the A-CSI sent by the terminal device according to the first downlink control information and first timing information, the The second indication information is used to indicate the first timing information, and the second indication information is configured by a high layer.

Optionally, the first downlink control information carries third indication information, and the third indication information is used to indicate the first timing information and/or the second timing information, where the second timing information uses Indicates the offset from the time unit when the terminal device receives the physical downlink shared channel PDSCH scheduled by the first downlink control information to the time unit when the terminal device feeds back the corresponding first hybrid automatic repeat request-confirmation HARQ-ACK shift value; the receiving unit 920 is specifically configured to: receive the A-CSI sent by the terminal device according to the third indication information and the first mapping relationship, where the first mapping relationship is used to indicate the third A corresponding relationship between the indication information and the first timing information and the second timing information.

Optionally, the first mapping relationship includes: a first sub-mapping relationship and/or a second sub-mapping relationship, where the first sub-mapping relationship is used to indicate that the first downlink control information does not trigger the When the terminal device feeds back the first HARQ-ACK, and the first downlink control information triggers the terminal device to feed back the A-CSI, the difference between the third indication information and the first timing information The corresponding relationship between the sub-mapping relationships, the second sub-mapping relationship is used to indicate that in the case where the first downlink control information triggers the terminal device to feed back the first HARQ-ACK and the A-CSI, the second Three indicates the correspondence between the information and the first timing information and the second timing information.

Optionally, the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information schedules a PDSCH and trigger the terminal device to feed back the corresponding The first HARQ-ACK; the receiving unit 920 is specifically configured to: receive the A-CSI sent by the terminal device according to the third indication information, the fourth indication information, and the first mapping relationship.

Optionally, the first downlink control information further includes fifth indication information, where the fifth indication information is used to indicate a power control command of the PUCCH carrying the A-CSI.

Optionally, the fifth indication information is used to indicate the power control command of the PUCCH carrying the first HARQ-ACK, and the power control command of the PUCCH carrying the A-CSI is the same as the power control command of the PUCCH carrying the first HARQ-ACK. The power control commands of the PUCCH of HARQ-ACK are the same.

Optionally, the sending unit 910 is further configured to: before receiving the A-CSI sent by the terminal device according to the first downlink control information and first timing information, send second downlink control information, so The second downlink control information is used to trigger the terminal equipment to feed back the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information, and the feedback time unit of the second HARQ-ACK is the same as the A-CSI The reporting time unit is the same; the receiving unit 920 is specifically configured to: receive the information bits and information of the A-CSI sent by the terminal device according to the first downlink control information and the second downlink control information The information obtained by jointly encoding the information bits of the second HARQ-ACK.

Optionally, in the case where the first downlink control information only triggers the terminal device to feed back the A-CSI, the first downlink control information further includes sixth indication information, and the sixth indication information It is used to indicate that the PDSCH is scheduled before the end of the first downlink control information, and indicates the number of the second downlink control information that needs to be fed back in the time slot where the A-CSI is reported for the corresponding second HARQ-ACK.

It should be understood that the device 900 here is embodied in the form of functional units. The term "unit" herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group of processors) for executing one or more software or firmware programs. processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the apparatus 900 may specifically be the network device in the foregoing embodiment, and the apparatus 900 may be used to execute various processes and/or steps corresponding to the network device in the foregoing method embodiments, To avoid repetition, details are not repeated here.

FIG. 10 shows another information transmission device 1000 provided by the embodiment of the present application. The apparatus 1000 includes a processor 1010 , a transceiver 1020 and a memory 1030 . Wherein, the processor 1010, the transceiver 1020 and the memory 1030 communicate with each other through an internal connection path, the memory 1030 is used to store instructions, and the processor 1010 is used to execute the instructions stored in the memory 1030 to control the transceiver 1020 to send signals and /or to receive a signal.

Wherein, the transceiver 1020 is configured to receive first downlink control information, the first downlink control information carries first indication information, and the first indication information is used to trigger the device to perform aperiodic channel state information A- Reporting of CSI: the processor 1010 is configured to obtain first timing information, and the first timing information is used to indicate the time unit from when the device receives the first downlink control information to the time unit when the A-CSI is reported offset value; according to the first timing information, determine the reporting time unit of the A-CSI; the transceiver 1020 is also used to send the A-CSI to the network device at the reporting time unit of the A-CSI .

It should be understood that the apparatus 1000 may specifically be the terminal device in the foregoing embodiments, and may be configured to execute various steps and/or processes corresponding to the terminal device in the foregoing method embodiments. Optionally, the memory 1030 may include read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1010 may be configured to execute instructions stored in the memory, and when the processor 1010 executes the instructions stored in the memory, the processor 1010 may be configured to execute the steps of the above-mentioned method embodiments corresponding to the terminal device and/or or process.

FIG. 11 shows another information transmission device 1100 provided by the embodiment of the present application. The apparatus 1100 includes a processor 1110 , a transceiver 1120 and a memory 1130 . Wherein, the processor 1110, the transceiver 1120 and the memory 1130 communicate with each other through an internal connection path, the memory 1130 is used to store instructions, and the processor 1110 is used to execute the instructions stored in the memory 1130 to control the transceiver 1120 to send signals and /or to receive a signal.

Wherein, the transceiver 1120 is used to send first downlink control information, the first downlink control information carries first indication information, and the first indication information is used to trigger the terminal device to perform aperiodic channel state information A - CSI reporting: receiving the A-CSI sent by the terminal device according to the first downlink control information and first timing information, where the first timing information is used to indicate that the terminal device receives the first An offset value from the time unit of the downlink control information to the time unit of reporting the A-CSI.

It should be understood that the apparatus 1100 may specifically be the network device in the foregoing embodiments, and may be configured to execute various steps and/or processes corresponding to the network devices in the foregoing method embodiments. Optionally, the memory 1130 may include read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1110 may be configured to execute instructions stored in the memory, and when the processor 1110 executes the instructions stored in the memory, the processor 1110 may be configured to execute the steps of the foregoing method embodiments corresponding to the network device and/or or process.

It should be understood that in the embodiment of the present application, the processor of the above-mentioned device may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits ( ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software units in the processor. The software unit may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, indicating that there may be three relationships, for example, A and/or B may mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Those of ordinary skill in the art can realize that, in combination with the various method steps and units described in the embodiments disclosed herein, they can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the possibility of hardware and software For interchangeability, in the above description, the steps and components of each embodiment have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those of ordinary skill in the art may implement the described functionality using different methods for each particular application, but such implementation should not be considered as exceeding the scope of the present application.

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

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of software products, and the computer software products are stored in a storage medium In, several instructions are included to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

The above is only a specific embodiment of the application, but the scope of protection of the application is not limited thereto. Any person familiar with the technical field can easily think of various equivalents within the scope of the technology disclosed in the application. Modifications or replacements, these modifications or replacements shall be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (34)

1. An information transmission method, characterized in that, comprising: The terminal device receives first downlink control information, the first downlink control information carries first indication information, and the first indication information is used to trigger the terminal device to perform aperiodic channel state information A- Reporting of CSI; The terminal device acquires first timing information, where the first timing information is used to indicate an offset value from a time unit when the terminal device receives the first downlink control information to a time unit when the A-CSI is reported; The terminal device determines the reporting time unit of the A-CSI according to the first timing information; The terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI; The first downlink control information carries third indication information, and the third indication information is used to indicate second timing information, where the second timing information is used to indicate that the terminal device receives the first downlink The offset value of the time unit of the physical downlink shared channel PDSCH scheduled by the control information to the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK time unit fed back by the terminal device; The acquisition of the first timing information by the terminal device includes: The terminal device determines the first timing information according to the third indication information and the first mapping relationship, where the first mapping relationship is used to indicate that the third indication information and the first timing information and the Correspondence between the second timing information. 2. The method according to claim 1, wherein said terminal device acquiring first timing information comprises: The terminal device receives second indication information, where the second indication information is used to indicate the first timing information, and the second indication information is configured by a high layer. 3. The method according to claim 1, wherein the first mapping relationship comprises: The first sub-mapping relationship and/or the second sub-mapping relationship, wherein the first sub-mapping relationship is used to indicate that the first downlink control information does not trigger the terminal device to feed back the first hybrid automatic repeat transmission request-acknowledgement HARQ-ACK, and the first downlink control information triggers the terminal device to feed back the A-CSI, the correspondence between the third indication information and the first timing information, The second sub-mapping relationship is used to indicate that when the first downlink control information triggers the terminal device to feed back the first hybrid automatic repeat request-acknowledgment HARQ-ACK and the A-CSI, the The corresponding relationship between the third indication information and the first timing information and the second timing information. 4. The method according to claim 1 or 3, wherein the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information schedules PDSCH is received and the terminal device is triggered to feed back the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK; The terminal device determines the first timing information according to the third indication information and the first mapping relationship, including: The terminal device determines the first timing information according to the third indication information, the fourth indication information, and the first mapping relationship. 5. The method according to any one of claims 1 to 3, wherein the first downlink control information further carries fifth indication information, and the fifth indication information is used to indicate that the A- The power control command of the PUCCH of the CSI; Before the terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, the method further includes: determining, by the terminal device, the transmission power of the A-CSI according to the fifth indication information; The terminal sends the A-CSI to the network device in the reporting time unit of the A-CSI, including: The terminal device sends the A-CSI to the network device by using the sending power of the A-CSI in the reporting time unit of the A-CSI. 6. The method according to claim 5, wherein the fifth indication information is used to indicate the power control command of the PUCCH that bears the first hybrid automatic repeat request-acknowledgment HARQ-ACK, and the power control command that bears the The power control command of the PUCCH of the A-CSI is the same as the power control command of the PUCCH carrying the first hybrid automatic repeat request-acknowledgment HARQ-ACK. 7. The method according to any one of claims 1 to 3, wherein, before the terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, the method Also includes: The terminal device receives second downlink control information, the second downlink control information is used to trigger the terminal device to feed back the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information, and the second HARQ - the feedback time unit of the ACK is the same as the reporting time unit of the A-CSI; The terminal device sends the A-CSI to the network device in the reporting time unit of the A-CSI, including: According to the first downlink control information and the second downlink control information, the terminal device compares the information bits of the A-CSI and the information bits of the second HARQ-ACK in the reporting time unit of the A-CSI The information bits are jointly encoded to generate encoded information; The terminal device sends the encoded information to the network device. 8. The method according to claim 7, wherein when the first downlink control information only triggers the terminal equipment to feed back the A-CSI, the first downlink control information further includes Sixth indication information, the sixth indication information is used to indicate that the PDSCH has been scheduled before the first downlink control information and indicates that the corresponding second HARQ-ACK needs to be fed back within the reporting time unit of the A-CSI The number of the second downlink control information; Before the terminal device jointly encodes the information bits of the A-CSI and the information bits of the second HARQ-ACK in the reporting time unit of the A-CSI, the method further includes: The terminal device determines the HARQ-ACK codebook that needs to be fed back within the reporting time unit of the A-CSI according to the sixth indication information; The terminal device generates information bits of the second HARQ-ACK according to the HARQ-ACK codebook. 9. An information transmission method, comprising: The network device sends first downlink control information, where the first downlink control information carries first indication information, and the first indication information is used to trigger the terminal equipment to perform aperiodic channel state information A-CSI detection on the S-PUCCH. report; The network device receives the A-CSI sent by the terminal device according to the first downlink control information and first timing information, and the first timing information is used to indicate that the terminal device receives the first downlink an offset value from the time unit of the row control information to the time unit of reporting the A-CSI; The first downlink control information carries third indication information, and the third indication information is used to indicate second timing information, where the second timing information is used to indicate that the terminal device receives the first downlink The offset value of the time unit of the physical downlink shared channel PDSCH scheduled by the control information to the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK time unit fed back by the terminal device; The network device receiving the A-CSI sent by the terminal device according to the first downlink control information and the first timing information includes: The network device receives the A-CSI sent by the terminal device according to the third indication information and the first mapping relationship, where the first mapping relationship is used to indicate the third indication information and the first timing The corresponding relationship between the information and the second timing information. 10. The method according to claim 9, wherein before the network device receives the A-CSI sent by the terminal device according to the first downlink control information and the first timing information, the Methods also include: The network device sends second indication information, where the second indication information is used to indicate the first timing information, and the second indication information is configured by a high layer. 11. The method according to claim 9, wherein the first mapping relationship comprises: The first sub-mapping relationship and/or the second sub-mapping relationship, wherein the first sub-mapping relationship is used to indicate that the first downlink control information does not trigger the terminal device to feed back the first hybrid automatic repeat transmission request-acknowledgement HARQ-ACK, and the first downlink control information triggers the terminal device to feed back the A-CSI, the correspondence between the third indication information and the first timing information, The second sub-mapping relationship is used to indicate that when the first downlink control information triggers the terminal device to feed back the first hybrid automatic repeat request-acknowledgment HARQ-ACK and the A-CSI, the The corresponding relationship between the third indication information and the first timing information and the second timing information. 12. The method according to claim 9 or 11, wherein the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information schedules PDSCH is received and the terminal device is triggered to feed back the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK; The network device receiving the A-CSI sent by the terminal device according to the third indication information and the first mapping relationship includes: The network device receives the A-CSI sent by the terminal device according to the third indication information, the fourth indication information, and the first mapping relationship. 13. The method according to any one of claims 9 to 11, wherein the first downlink control information further includes fifth indication information, and the fifth indication information is used to indicate that the A- Power control command of PUCCH of CSI. 14. The method according to claim 13, wherein the fifth indication information is used to indicate the power control command of the PUCCH that bears the first hybrid automatic repeat request-acknowledgment HARQ-ACK, and the power control command that bears the The power control command of the PUCCH of the A-CSI is the same as the power control command of the PUCCH carrying the first hybrid automatic repeat request-acknowledgment HARQ-ACK. 15. The method according to any one of claims 9 to 11, wherein the network device receives the A message sent by the terminal device according to the first downlink control information and the first timing information. Before -CSI, the method also includes: The network device sends second downlink control information, the second downlink control information is used to trigger the terminal device to feed back the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information, and the second HARQ - the feedback time unit of the ACK is the same as the reporting time unit of the A-CSI; The network device receiving the A-CSI sent by the terminal device according to the first downlink control information and the first timing information includes: receiving, by the network device, the information bits of the A-CSI and the information bits of the second HARQ-ACK sent by the terminal device according to the first downlink control information and the second downlink control information Jointly encoded information. 16. The method according to claim 15, wherein when the first downlink control information only triggers the terminal equipment to feed back the A-CSI, the first downlink control information further includes Sixth indication information, the sixth indication information is used to indicate that the PDSCH has been scheduled before the first downlink control information and indicates that the corresponding second HARQ-ACK needs to be fed back in the time slot where the A-CSI is reported The number of the second downlink control information. 17. An information transmission device, comprising: A receiving unit, configured to receive first downlink control information, where the first downlink control information carries first indication information, and the first indication information is used to trigger the device to perform aperiodic channel state information on the S-PUCCH Reporting of A-CSI; A processing unit, acquiring first timing information, where the first timing information is used to indicate an offset value from a time unit when the device receives the first downlink control information to a time unit when the A-CSI is reported; The processing unit is also used for: Determine the reporting time unit of the A-CSI according to the first timing information; a sending unit, configured to send the A-CSI to the network device in the reporting time unit of the A-CSI; The first downlink control information carries third indication information, and the third indication information is used to indicate second timing information, where the second timing information is used to indicate that the device receives the first downlink control information. The time unit of the physical downlink shared channel PDSCH scheduled by the information to the offset value of the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK time unit fed back by the device; The processing unit is specifically used for: Determine the first timing information according to the third indication information and the first mapping relationship, where the first mapping relationship is used to indicate the third indication information and the first timing information and the second timing information Correspondence between. 18. The device according to claim 17, wherein the receiving unit is specifically used for: receiving second indication information, where the second indication information is used to indicate the first timing information, and the second indication information is configured by a high layer. 19. The device according to claim 17, wherein the first mapping relationship comprises: The first sub-mapping relationship and/or the second sub-mapping relationship, wherein the first sub-mapping relationship is used to indicate that the first downlink control information does not trigger the device to feed back the first hybrid automatic repeat request - when the HARQ-ACK is confirmed and the first downlink control information triggers the device to feed back the A-CSI, the correspondence between the third indication information and the first timing information, the The second sub-mapping relationship is used to indicate that the third A corresponding relationship between the indication information and the first timing information and the second timing information. 20. The device according to claim 17 or 19, wherein the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information schedules PDSCH is received and the device is triggered to feed back the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK; The processing unit is specifically used for: Determine the first timing information according to the third indication information, the fourth indication information, and the first mapping relationship. 21. The device according to any one of claims 17 to 19, wherein the first downlink control information further carries fifth indication information, and the fifth indication information is used to indicate that the A- The power control command of the PUCCH of the CSI; The processing unit is also used for: Determine the sending power of the A-CSI according to the fifth indication information; The sending unit is specifically used for: Sending the A-CSI to the network device by using the sending power of the A-CSI in the reporting time unit of the A-CSI. 22. The apparatus according to claim 21, wherein the fifth indication information is used to indicate a power control command of the PUCCH carrying the first hybrid automatic repeat request-acknowledgment HARQ-ACK, and the power control command of the PUCCH carrying the The power control command of the PUCCH of the A-CSI is the same as the power control command of the PUCCH carrying the first hybrid automatic repeat request-acknowledgment HARQ-ACK. 23. The device according to any one of claims 17 to 19, wherein the receiving unit is further used for: receiving second downlink control information, the second downlink control information is used to trigger the device to feed back the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information, and the feedback time of the second HARQ-ACK The unit is the same as the reporting time unit of the A-CSI; The processing unit is also used for: According to the first downlink control information and the second downlink control information, combine the information bits of the A-CSI with the information bits of the second HARQ-ACK in the reporting time unit of the A-CSI Encoding, generating encoded information; The sending unit is specifically used for: Send the encoded information to the network device. 24. The device according to claim 23, wherein when the first downlink control information only triggers the device to feed back the A-CSI, the first downlink control information further includes the first Six indication information, the sixth indication information is used to indicate that by the end of the first downlink control information, the PDSCH has been scheduled and the corresponding second HARQ-ACK needs to be fed back within the reporting time unit of the A-CSI the number of the second downlink control information; The processing unit is also used for: According to the sixth indication information, determine the HARQ-ACK codebook that needs to be fed back within the reporting time unit of the A-CSI; Generate information bits of the second HARQ-ACK according to the HARQ-ACK codebook. 25. An information transmission device, comprising: A sending unit, configured to send first downlink control information, where the first downlink control information carries first indication information, and the first indication information is used to trigger the terminal device to perform aperiodic channel state information A on the S-PUCCH -CSI reporting; a receiving unit, configured to receive the A-CSI sent by the terminal device according to the first downlink control information and first timing information, where the first timing information is used to indicate that the terminal device receives the first an offset value from the time unit of the downlink control information to the time unit of reporting the A-CSI; The first downlink control information carries third indication information, and the third indication information is used to indicate second timing information, where the second timing information is used to indicate that the terminal device receives the first downlink The offset value of the time unit of the physical downlink shared channel PDSCH scheduled by the control information to the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK time unit fed back by the terminal device; The receiving unit is specifically used for: receiving the A-CSI sent by the terminal device according to the third indication information and the first mapping relationship, where the first mapping relationship is used to indicate the third indication information and the first timing information and the Correspondence between the second timing information. 26. The device according to claim 25, wherein the sending unit is further used for: Before receiving the A-CSI sent by the terminal device according to the first downlink control information and first timing information, sending second indication information, where the second indication information is used to indicate the first timing information , the second indication information is configured by a high layer. 27. The device according to claim 25, wherein the first mapping relationship comprises: The first sub-mapping relationship and/or the second sub-mapping relationship, wherein the first sub-mapping relationship is used to indicate that the first downlink control information does not trigger the terminal device to feed back the first hybrid automatic repeat transmission request-acknowledgement HARQ-ACK, and the first downlink control information triggers the terminal device to feed back the A-CSI, the correspondence between the third indication information and the first timing information, The second sub-mapping relationship is used to indicate that when the first downlink control information triggers the terminal device to feed back the first hybrid automatic repeat request-acknowledgment HARQ-ACK and the A-CSI, the The corresponding relationship between the third indication information and the first timing information and the second timing information. 28. The device according to claim 25 or 27, wherein the first downlink control information carries fourth indication information, and the fourth indication information is used to indicate whether the first downlink control information schedules PDSCH is received and the terminal device is triggered to feed back the corresponding first hybrid automatic repeat request-acknowledgment HARQ-ACK; The receiving unit is specifically used for: receiving the A-CSI sent by the terminal device according to the third indication information, the fourth indication information, and the first mapping relationship. 29. The device according to any one of claims 25 to 27, wherein the first downlink control information further includes fifth indication information, and the fifth indication information is used to indicate that the A- Power control command of PUCCH of CSI. 30. The apparatus according to claim 29, wherein the fifth indication information is used to indicate the power control command of the PUCCH carrying the first hybrid automatic repeat request-acknowledgment HARQ-ACK, and the power control command of the PUCCH carrying the The power control command of the PUCCH of the A-CSI is the same as the power control command of the PUCCH carrying the first hybrid automatic repeat request-acknowledgment HARQ-ACK. 31. The device according to any one of claims 25 to 27, wherein the sending unit is further used for: Before receiving the A-CSI sent by the terminal device according to the first downlink control information and first timing information, sending second downlink control information, where the second downlink control information is used to trigger the terminal device Feedback the second HARQ-ACK corresponding to the PDSCH scheduled by the second downlink control information, and the feedback time unit of the second HARQ-ACK is the same as the reporting time unit of the A-CSI; The receiving unit is specifically used for: receiving the information bits of the A-CSI and the information bits of the second HARQ-ACK sent by the terminal device according to the first downlink control information and the second downlink control information after jointly encoding information. 32. The apparatus according to claim 31, wherein when the first downlink control information only triggers the terminal equipment to feed back the A-CSI, the first downlink control information further includes Sixth indication information, the sixth indication information is used to indicate that the PDSCH has been scheduled before the first downlink control information and indicates that the corresponding second HARQ-ACK needs to be fed back in the time slot where the A-CSI is reported The number of the second downlink control information. 33. A computer-readable storage medium, the computer-readable storage medium stores a computer program, characterized in that, when the computer program is executed by a computing device, the computing device realizes the above-mentioned claim 1 to claim The method of any one of 16. 34. A system on a chip, characterized in that it comprises: a processor, configured to call and run a computer program from a memory, so that a communication device installed with the system on a chip executes the program described in any one of claims 1 to 16. method of information transmission.