WO2021062634A1 - Physical downlink shared channel transmission method and communication device - Google Patents

Abstract

The present application provides a physical downlink shared channel transmission method and a communication device. The physical downlink shared channel transmission method comprises: determining, according to time domain resource information of a physical downlink control channel, a first time domain range corresponding to an i-th physical downlink shared channel transmission, the physical downlink control channel being used for scheduling the physical downlink shared channel; the i-th physical downlink shared channel transmission being a transmission of N repeated physical downlink shared channel transmissions; N being an integer greater than or equal to 2; i being greater than or equal to 1, and an integer less than or equal to N; and receiving the content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range. The implementation of embodiments of the present application can reduce the data transmission delay.

Description

Physical downlink shared channel transmission method and communication device Technical field

This application relates to the field of communication technology, and in particular to a physical downlink shared channel transmission method and communication device.

Background technique

In order to meet the requirements of Ultra-Reliable and Low Latency Communications (URLLC) and improve the reliability of data transmission, the same data can be repeatedly transmitted in time, that is, the physical downlink shared channel corresponding to the same data can be repeatedly transmitted in time. Physical Downlink Share Channel, PDSCH). When receiving the PDSCH, the terminal device needs to determine the relevant parameters of the PDSCH transmission, such as the time domain resources corresponding to each PDSCH transmission. Only after the terminal device determines the relevant parameters of each PDCSH transmission, can the PDSCH be correctly received. In the prior art, the relevant parameters of each PDSCH transmission are carried in the Downlink Control Information (DCI) in the Physical Downlink Control Channel (PDCCH), that is, the network device transmits the PDCCH first. Retransmit PDSCH. There must be a certain time interval between PDSCH and PDCCH. This time interval is used for terminal equipment to receive the PDCCH, and then decode the PDCCH to obtain the transmission parameters in the DCI (such as the time domain resources corresponding to the PDSCH), and then use the corresponding To receive on the time domain resource. In the prior art method, each time the terminal device needs to decode the PDCCH to obtain the time domain resources of the PDSCH before sending the PDSCH, which will cause a large delay in data transmission.

Summary of the invention

The present application provides a physical downlink shared channel transmission method and device, which can not only improve the reliability of data transmission, but also reduce the time delay of data transmission.

In the first aspect, the embodiments of the present application provide a physical downlink shared channel transmission method, where the method may be executed by a terminal device, or may be executed by a component of the terminal device (such as a processor, a chip, or a chip system, etc.). The method includes:

According to the time domain resource information of the physical downlink control channel, the first time domain range corresponding to the i-th physical downlink shared channel transmission is determined, and the physical downlink control channel is used to schedule the physical downlink shared channel. Among them, the physical downlink shared channel is repeatedly transmitted N times, the i-th physical downlink shared channel transmission is one of the N repeated transmissions of the physical downlink shared channel, N is an integer greater than or equal to 2, and i is greater than or equal to 1. , And an integer less than or equal to N. Optionally, the physical downlink shared channel for the above N repeated transmissions is the same or different redundancy version (Redundant version, RV) corresponding to the same data.

According to the first time domain range, the content corresponding to the i-th physical downlink shared channel transmission is received.

Correspondingly, an embodiment of the present application also provides a communication device, which may be a terminal device, or a device in a terminal device, or a device that can be matched and used with the terminal device. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

In a possible design, the structure of the terminal device may include a processing unit and a transceiving unit. The transceiving unit is used to perform operations of receiving or sending information or messages in the process, and the processing unit is used to perform operations on the information or messages in the process. Corresponding processing operations;

The processing unit is configured to determine the first time domain range corresponding to the i-th physical downlink shared channel transmission according to the time domain resource information of the physical downlink control channel, and the physical downlink control channel is used to schedule the physical downlink shared channel. Among them, the physical downlink shared channel is repeatedly transmitted N times, the i-th physical downlink shared channel transmission is one of the N repeated transmissions of the physical downlink shared channel, N is an integer greater than or equal to 2, and i is greater than or equal to 1. , And an integer less than or equal to N. Optionally, the physical downlink shared channel for the above N repeated transmissions is the same or different redundancy version (Redundant version, RV) corresponding to the same data.

The transceiver unit is configured to receive the content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range.

Optionally, the terminal device may also include a storage unit, the storage unit is used to couple with the processing unit and the transceiver unit, which stores the necessary program instructions and data of the terminal device, and the processing unit is used to call the instructions and data stored in the storage unit and execute the corresponding Operation.

Optionally, the transceiver unit may also be referred to as a communication unit, and is used to perform operations of receiving or sending information or messages in the process. The foregoing transceiver unit may also be divided into a receiving unit and a sending unit according to functions, where the receiving unit is used to perform a receiving operation, and the sending unit is used to perform a sending operation.

As an example, the processing unit may be a processor, the transceiving unit may be a transceiver, and the storage unit may be a memory. The transceiver is used to perform the operation of receiving or sending information or messages in the process, and the processor is used to perform the operations of receiving or sending information or messages in the process. Perform corresponding processing operations, where the transceiver may also be referred to as a communication interface, which is used to perform the operations of receiving or sending information or messages in the process.

In an implementation manner, the terminal device includes a processor and a transceiver;

The processor is configured to determine the first time domain range corresponding to the i-th physical downlink shared channel transmission according to the time domain resource information of the physical downlink control channel, where the physical downlink control channel is used to schedule the physical downlink shared channel, so The i-th physical downlink shared channel transmission is one of the N repeated transmissions of the physical downlink shared channel, where N is an integer greater than or equal to 2, and the i is greater than or equal to 1, and less than or equal to An integer of N;

The transceiver is configured to receive the content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range.

Optionally, the above transceivers may also be divided into receivers and transmitters according to their functions, where the receivers are used to perform receiving operations, and the transmitters are used to perform sending operations.

The above-mentioned devices may be respectively arranged on separate chips, or at least part or all of them may be arranged on the same chip. For example, the processor can be further divided into an analog baseband processor and a digital baseband processor. Among them, the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be combined with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) Integrated on the same chip. Such a chip can be called a system on chip. Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the specific requirements of product design. The embodiment of the present application does not limit the specific implementation form of the foregoing device.

By implementing the embodiment of this application, the physical downlink shared channel is repeatedly transmitted N times, which can improve the reliability of data transmission, and the embodiment of this application can determine the i-th physical downlink sharing based on the time domain resource information of the physical downlink control channel The first time domain range corresponding to channel transmission, therefore, the physical shared channel can be sent without analyzing the physical downlink control channel to obtain the specific time domain resources of the physical downlink shared channel, which can reduce the time delay of data transmission.

In a possible design, the transmission configuration indication-state TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission, and the i-th physical downlink control channel transmission It is one transmission in M repeated transmissions of the physical downlink control channel, and the M is an integer greater than or equal to 2.

Wherein, if the number of repeated transmissions of the physical downlink shared channel N is greater than M, the physical downlink shared channel can be traversed N-M after the TCI-state transmission used in the previous M transmissions. For example, the number of repeated transmissions of the physical downlink shared channel N=5, the number of repeated transmissions of the physical downlink control channel M=3, and the repeated transmission of the physical downlink control channel adopts three TCI-states. The three TCI-states are respectively (TCI -state#1, TCI-state#2, TCI-state#3), then the first 3 physical downlink shared channel repeated transmissions respectively use TCI-state#1, TCI-state#2 and TCI-state#3, the last two The second physical downlink shared channel transmission uses TCI-state#1 and TCI-state#2 respectively. Or, if the number of repeated transmissions of the physical downlink shared channel N=5, the number of repeated transmissions of the physical downlink control channel M=3, and the repeated transmission of the physical downlink control channel uses two TCI-states, the two TCI-states are ( TCI-state#1, TCI-state#2), then the first three physical downlink shared channel repeated transmissions use TCI-state#1, TCI-state#2 and TCI-state#1, and the last two physical downlink shared channels Transmission can use TCI-state#1 and TCI-state#2.

By implementing the embodiments of this application, the TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission, so the PDCCH does not carry the physical downlink shared channel transmission. TCI-state, the terminal device can use the TCI-state used in the i-th physical downlink control channel transmission to receive the i-th physical downlink shared channel transmission, thereby reducing the data transmission delay.

In a possible design, the K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by a control resource set corresponding to the physical downlink control channel; or,

The K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by the K control resource sets corresponding to the physical downlink control channel, and one control resource set corresponds to an activated TCI-state.

Where K is an integer greater than or equal to 1, where K may be greater than M, that is, M TCI-states are selected from K TCI-states to perform M repeated transmissions of the physical downlink control channel. Or K can be equal to M, that is, one TCI-state corresponds to one physical downlink control channel transmission, or K can be less than M, then the K TCI-states can be repeatedly used for M physical downlink control channel transmissions.

By implementing the embodiments of the present application, K TCI-states can be determined through the control resource set corresponding to the physical downlink control channel, and the method of determining the TCI-state is simple.

In a possible design, the i-th physical downlink control channel transmission and the i-th physical downlink shared channel transmission may be paired and transmitted together, and the time domain resource information and/or the i-th physical downlink control channel transmission may be used. The time domain resource information of the i+1th physical downlink control channel transmission determines the first time domain range corresponding to the ith physical downlink shared channel.

Optionally, the first time corresponding to the i-th physical downlink shared channel transmission can be determined based on the time-domain resource information of the i-th physical downlink control channel transmission and the time-domain resource information of the i+1-th physical downlink control channel transmission. Domain range, that is, the first time domain range is determined by the start time domain symbol and the end time domain symbol, or the first time domain range is the time included by the start time domain symbol, the end time domain symbol, and the first time domain range. The number of domain symbols is determined, or the first time domain range corresponding to the i-th physical downlink shared channel transmission can be determined according to the time-domain resource information of the i-th physical downlink control channel transmission, that is, the first time domain range starts from the start time. Domain symbols and the number of time-domain symbols included in the first time-domain range; alternatively, the first time corresponding to the i-th physical downlink shared channel transmission can be determined according to the time-domain resource information of the i+1th physical downlink control channel transmission The domain range, that is, the first time domain range is determined by the cut-off time domain symbol and the number of time domain symbols included in the first time domain range.

Wherein, the starting time domain symbol of the first time domain range corresponding to the i-th physical downlink shared channel transmission may be the first time-domain symbol of the time domain resource of the i-th physical downlink control channel transmission, or the i-th The starting time domain symbol of the first time domain range corresponding to the second physical downlink shared channel transmission may be the last time domain symbol of the time domain resource of the i-th physical downlink control channel transmission, or the i-th physical downlink shared channel transmission The corresponding starting time domain symbol of the first time domain range may be the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel or the last time domain symbol shifted backward by X time domain symbols The corresponding symbol, X is an integer greater than or equal to 1. The number of offset time-domain symbols X may be specified by the protocol by default, or may be indicated to the terminal device by the network device through RRC signaling, MAC CE signaling, or DCI information.

Wherein, the cut-off time domain symbol of the first time domain range corresponding to the i-th physical downlink shared channel transmission may be shifted forward by Y from the first time domain symbol of the time domain resource of the i+1th physical downlink control channel transmission. For the corresponding symbol after the time domain symbol, Y is an integer greater than or equal to 1. The number of offset time-domain symbols Y may be specified by the protocol by default, or may be indicated to the terminal device by the network device through RRC signaling, MAC CE signaling, or DCI information.

The number of time-domain symbols included in the first time-domain range may be specified by the protocol by default, or indicated by the network device to the terminal device through RRC signaling, MAC CE signaling, or DCI information, or the terminal device may report to the network through the capability reporting process equipment.

Optionally, if the first time corresponding to the i-th physical downlink shared channel transmission is jointly determined by the start time domain symbol, the end time domain symbol of the first time domain range, and the number of time domain symbols contained in the first time domain range If the number of time domain symbols determined is greater than the number of symbols corresponding to the start time domain symbol to the end time domain symbol, the start time domain symbol and the end time domain symbol are used to determine the time domain range. As the first time domain range corresponding to the i-th physical downlink shared channel transmission. If the number of time-domain symbols determined is less than or equal to the number of time-domain symbols from the start time-domain symbol to the end time-domain symbol, the time-domain range corresponding to the start time-domain symbol and the determined number of time-domain symbols is used As the first time domain range corresponding to the i-th physical downlink shared channel transmission. That is, a smaller time domain range is used as the time domain range corresponding to the i-th physical downlink shared channel transmission.

In a possible design, N times of repeated transmission of the physical downlink shared channel may be after all the physical downlink control channels are transmitted. The physical downlink control channel may not be repeatedly transmitted, that is, transmit once, or it may be repeated transmission, the number of repeated transmissions. Is M.

The first time domain range is determined by the starting time domain symbol and the number of time domain symbols included in the first time domain range;

If i is equal to 1, the starting time domain symbol is the first time domain symbol or the last time domain symbol of the time domain resource transmitted by the M-th physical downlink control channel, which corresponds to the symbol that is shifted backward by X time domain symbols; Or, it is the first time domain symbol or the fourth time domain symbol of the next time slot of the time slot where the M-th physical downlink control channel transmission is located. It can be understood that the starting time domain symbol may also be the next time slot Other time domain symbols of, for example, the second time domain symbol, or the third time domain symbol, etc. X is an integer greater than or equal to 1; wherein, the M-th physical downlink control channel transmission is the last of M repeated transmissions of the physical downlink control channel.

or,

If i is greater than 1, the starting time domain symbol is the first time domain symbol or the last time domain symbol of the time domain range corresponding to the i-1th physical downlink shared channel transmission, and it is shifted backward by X time domain symbols Corresponding symbol, the X is an integer greater than or equal to 1.

By implementing the embodiments of this application, the time domain range of the physical downlink shared channel transmission is determined by the physical downlink control channel of the last transmission. Before the demodulation and decoding of the physical downlink control channel is completed, the physical downlink shared channel can be transmitted. On the basis of transmission reliability, the data transmission delay is reduced.

In a possible design, according to the first time domain range, receiving the i-th physical downlink shared channel transmission includes:

Determine the first time domain resource corresponding to the i-th physical downlink shared channel transmission from the first time domain range, and obtain the content corresponding to the i-th physical downlink shared channel transmission from the first time domain resource, the first time domain resource It is a subset or complete set of the first time domain range.

Optionally, if the first time domain resource is the complete set of the first time domain range, the specific time domain resource used for the i-th physical downlink shared channel transmission is the determined time domain range.

By implementing this embodiment, the specific time domain resources used for the i-th physical downlink shared channel transmission can be determined from the first time-domain range, so that it is convenient to receive the i-th physical downlink shared channel transmission.

In a possible design, if the first time domain resource is a subset of the first time domain range.

The first time domain resource is determined by the start time domain symbol of the first time domain resource and the number of time domain symbols contained in the first time domain resource, and the number of time domain symbols contained in the first time domain resource is obtained according to the physical downlink control channel.

In a possible design, the starting time domain symbol of the first time domain resource is the starting time domain symbol of the first time domain range; or,

Is calculated based on the start time domain symbol of the first physical downlink shared channel transmission; or,

To obtain from the first symbol interval and the starting time domain symbol of the i-th physical downlink control channel transmission, the first symbol interval is the starting time domain symbol of the first physical downlink control channel transmission and the first physical downlink shared channel The symbol interval between the start time domain symbols of the transmission; or,

In order to obtain from the second symbol interval and the cutoff time domain symbol of the i-th physical downlink control channel transmission, the second symbol interval is the starting time domain symbol of the first physical downlink control channel transmission and the first physical downlink shared channel transmission The symbol interval between the cutoff time domain symbols;

Among them, the start time domain symbol of the first physical downlink shared channel transmission is obtained from the physical downlink control channel.

In the second aspect, embodiments of the present application provide a method for transmitting a physical downlink shared channel, where the method may be executed by a network device, or may be executed by a component of the network device (such as a processor, a chip, or a chip system, etc.). Among them, the method includes:

The network device uses the first time domain resource to perform the i-th physical downlink shared channel transmission. The first time domain resource may be a subset or the full set of the first time domain range corresponding to the i-th physical downlink shared channel transmission. The time domain range is determined by the time domain resource information of the physical downlink control channel. The physical downlink control channel is used to schedule the physical downlink shared channel. The i-th physical downlink shared channel transmission is one of N repeated transmissions. Is an integer greater than or equal to 2.

Correspondingly, an embodiment of the present application also provides a communication device, which may be a network device, may also be a device in a network device, or a device that can be matched and used with a network device. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

In a possible design, the structure of the network device may include a processing unit and a transceiver unit. The transceiver unit is used to support communication between network devices and other devices, and other devices can be terminal devices.

In one embodiment, the network device includes a transceiver unit;

The transceiver unit is configured to use the first time domain resource to perform the i-th physical downlink shared channel transmission, and the first time domain resource is a subset or complete set of the first time domain range corresponding to the i-th physical downlink shared channel transmission, so The first time domain range is determined by the time domain resource information of the physical downlink control channel, the physical downlink control channel is used to schedule the physical downlink shared channel, and the i-th physical downlink shared channel transmission is N repeated transmissions. For one transmission of, the N is an integer greater than or equal to 2.

The network device may also include a storage unit, which is used for coupling with the processing unit and the transceiver unit, and stores the program instructions and data necessary for the network device.

Among them, the transceiver unit may also be called a communication unit, which is used to perform the operation of receiving or sending information or messages in the process. Optionally, the foregoing transceiver unit may also be divided into a receiving unit and a sending unit according to functions, where the receiving unit is used to perform a receiving operation, and the sending unit is used to perform a sending operation.

As an example, the processing unit may be a processor, the transceiving unit may be a transceiver, and the storage unit may be a memory. The transceiver is used to perform the operation of receiving or sending information or messages in the process, and the processor is used to perform corresponding processing operations on the information or messages in the process. Among them, the transceiver may also be called a communication interface for performing the process. The operation of receiving or sending information or messages.

In one embodiment, the network device includes a transceiver;

The transceiver is configured to use the first time domain resource to perform the i-th physical downlink shared channel transmission, and the first time domain resource is a subset or complete set of the first time domain range corresponding to the i-th physical downlink shared channel transmission, so The first time domain range is determined by the time domain resource information of the physical downlink control channel, the physical downlink control channel is used to schedule the physical downlink shared channel, and the i-th physical downlink shared channel transmission is N repeated transmissions. For one transmission of, the N is an integer greater than or equal to 2.

Optionally, the above transceivers may also be divided into receivers and transmitters according to their functions, where the receivers are used to perform receiving operations, and the transmitters are used to perform sending operations.

By implementing the embodiments of the present application, when the network device performs the i-th physical downlink shared channel transmission, it determines the first time domain range corresponding to the i-th physical downlink shared channel transmission through the time domain resource information of the physical downlink control channel. Then, the i-th physical downlink shared channel transmission is performed on the first time domain resource within the first time domain, and the physical downlink shared channel can be transmitted without waiting for the terminal device to obtain the physical downlink shared channel transmission parameters from the physical downlink control channel, thereby Reduce data transmission delay.

In a possible design, the TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission, and the i-th physical downlink control channel transmission is the physical downlink control channel. In the M repeated transmissions, the M is an integer greater than or equal to 2, and the M is equal to the N.

In a possible design, the K TCI-states used for M repeated transmissions of the physical downlink control channel are the K TCI-states associated with a control resource set corresponding to the physical downlink control channel; or

The K TCI-states used for the M repeated transmissions of the physical downlink control channel are the K TCI-states associated with the K control resource sets corresponding to the physical downlink control channel, and one control resource set is used to associate a TCI-state;

Among them, K is greater than or equal to 1.

In a possible design, the time domain resource information of the physical downlink control channel includes the time domain resource information of the i-th physical downlink control channel transmission and/or the time-domain resource information of the i+1th physical downlink control channel transmission.

In a possible design, the first time domain range is determined by the start time domain symbol and the end time domain symbol; or,

The first time domain range is determined by the starting time domain symbol and the number of time domain symbols contained in the first time domain range; or,

The first time domain range is determined by the cut-off time domain symbol and the number of time domain symbols contained in the first time domain range; or,

The first time domain range is determined by the start time domain symbol, the end time domain symbol, and the number of time domain symbols included in the first time domain range;

Wherein, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, or, is the last time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, Or, the corresponding symbol after the first time domain symbol or the last time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel is shifted backward by X time domain symbols, and X is an integer greater than or equal to 1 ；

The cut-off time domain symbol is the corresponding symbol after the first time domain symbol of the time domain resource transmitted by the i+1th physical downlink control channel is shifted forward by Y time domain symbols, and Y is an integer greater than or equal to 1.

In a possible design, the first time domain range is determined by the starting time domain symbol and the number of time domain symbols contained in the first time domain range;

If i is equal to 1, the starting time domain symbol is the first time domain symbol or the last time domain symbol of the time domain resource transmitted by the M-th physical downlink control channel, which corresponds to the symbol that is shifted backward by X time domain symbols; Or, it is the first time domain symbol or the fourth time domain symbol of the next time slot of the time slot where the M-th physical downlink control channel transmission is located, and X is an integer greater than or equal to 1; where the M-th physical downlink control Channel transmission is the last of M repeated transmissions of the physical downlink control channel;

or,

If i is greater than 1, the starting time domain symbol is the first time domain symbol or the last time domain symbol of the time domain range corresponding to the i-1th physical downlink shared channel transmission, and it is shifted backward by X time domain symbols The corresponding symbol, X is an integer greater than or equal to 1.

In a third aspect, embodiments of the present application provide a physical downlink shared channel transmission method, where the method may be executed by a terminal device, or may be executed by a component of the terminal device (for example, a processor, a chip, or a chip system, etc.). The method includes:

Determine the first time domain range corresponding to the i-th physical downlink shared channel transmission according to the time-domain resource information of the i-th physical downlink control channel transmission and/or the time-domain resource information of the i+1-th physical downlink control channel transmission, The i-th physical downlink shared channel transmission is one of the N repeated transmissions of the physical downlink shared channel, and the i-th physical downlink control channel transmission is one of the M repeated transmissions of the physical downlink control channel. The i+1th The second physical downlink control channel transmission is the next transmission of the i-th physical downlink control channel transmission, and the physical downlink control channel is used to schedule the physical downlink shared channel. Wherein, N is an integer greater than or equal to 2, and i is an integer greater than or equal to 1 and less than or equal to N;

According to the first time domain range, the content corresponding to the i-th physical downlink shared channel transmission is received.

Correspondingly, an embodiment of the present application also provides a communication device, which may be a terminal device, or a device in a terminal device, or a device that can be matched and used with the terminal device. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

In a possible design, the structure of the terminal device may include a processing unit and a transceiving unit. The transceiving unit is used to perform operations of receiving or sending information or messages in the process, and the processing unit is used to perform operations on the information or messages in the process. Corresponding processing operations;

The processing unit is configured to determine, according to the time domain resource information of the i-th physical downlink control channel transmission and/or the time-domain resource information of the i+1th physical downlink control channel transmission, the i-th physical downlink shared channel transmission corresponding to the i-th physical downlink shared channel transmission In a time domain, the i-th physical downlink shared channel transmission is one of the N repeated transmissions of the physical downlink shared channel, and the i-th physical downlink control channel transmission is one of the M repeated transmissions of the physical downlink control channel. , The i+1th physical downlink control channel transmission is the next transmission of the i-th physical downlink control channel transmission, and the physical downlink control channel is used to schedule the physical downlink shared channel. Wherein, N is an integer greater than or equal to 2, and i is an integer greater than or equal to 1 and less than or equal to N;

The transceiver unit is configured to receive the content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range.

Optionally, the terminal device may also include a storage unit, the storage unit is used to couple with the processing unit and the transceiver unit, which stores the necessary program instructions and data of the terminal device, and the processing unit is used to call the instructions and data stored in the storage unit and execute the corresponding Operation.

Optionally, the transceiver unit may also be referred to as a communication unit, and is used to perform operations of receiving or sending information or messages in the process. The foregoing transceiver unit may also be divided into a receiving unit and a sending unit according to functions, where the receiving unit is used to perform a receiving operation, and the sending unit is used to perform a sending operation.

As an example, the processing unit may be a processor, the transceiving unit may be a transceiver, and the storage unit may be a memory. The transceiver is used to perform the operation of receiving or sending information or messages in the process, and the processor is used to perform the operations of receiving or sending information or messages in the process. Perform corresponding processing operations, where the transceiver may also be referred to as a communication interface, which is used to perform the operations of receiving or sending information or messages in the process.

In an implementation manner, the terminal device includes a processor and a transceiver;

The processor is configured to determine, according to the time domain resource information of the i-th physical downlink control channel transmission and/or the time-domain resource information of the i+1th physical downlink control channel transmission, the i-th physical downlink shared channel transmission corresponding to the i-th physical downlink shared channel transmission In a time domain, the i-th physical downlink shared channel transmission is one of the N repeated transmissions of the physical downlink shared channel, and the i-th physical downlink control channel transmission is one of the M repeated transmissions of the physical downlink control channel. , The i+1th physical downlink control channel transmission is the next transmission of the i-th physical downlink control channel transmission, and the physical downlink control channel is used to schedule the physical downlink shared channel. Wherein, N is an integer greater than or equal to 2, and i is an integer greater than or equal to 1 and less than or equal to N;

The transceiver is configured to receive the content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range.

Optionally, the above transceivers may also be divided into receivers and transmitters according to their functions, where the receivers are used to perform receiving operations, and the transmitters are used to perform sending operations.

The above-mentioned devices may be respectively arranged on separate chips, or at least part or all of them may be arranged on the same chip. For example, the processor can be further divided into an analog baseband processor and a digital baseband processor. Among them, the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be combined with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) Integrated on the same chip. Such a chip can be called a system on chip. Whether each device is installed independently on different chips or integrated on one or more chips often depends on the specific requirements of product design. The embodiment of the present application does not limit the specific implementation form of the foregoing device.

Through the embodiments of the present application, the i-th physical downlink sharing can be determined through the time-domain resource information of the i-th physical downlink control channel transmission and/or the time-domain resource information of the i+1-th physical downlink control channel transmission The channel transmits the corresponding first time domain range, and the physical downlink shared channel can be transmitted without waiting for the specific time domain resources of the physical downlink shared channel to be parsed from the physical downlink control channel, thereby reducing the data transmission delay.

In a possible design, the TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission.

In a possible design, the K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by a control resource set corresponding to the physical downlink control channel; or,

The K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by the K control resource sets corresponding to the physical downlink control channel, and one control resource set corresponds to an activated TCI-state.

In a possible design, the first time domain range is determined by the start time domain symbol and the end time domain symbol; or,

The first time domain range is determined by the starting time domain symbol and the number of time domain symbols contained in the first time domain range; or,

The first time domain range is determined by the cut-off time domain symbol and the number of time domain symbols contained in the first time domain range; or,

The first time domain range is determined by the start time domain symbol, the end time domain symbol, and the number of time domain symbols included in the first time domain range;

Wherein, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, or, is the last time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, Or, the corresponding symbol after the first time domain symbol or the last time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel is shifted backward by X time domain symbols, and X is an integer greater than or equal to 1 ；

The cut-off time domain symbol is the corresponding symbol after the first time domain symbol of the time domain resource transmitted by the i+1th physical downlink control channel is shifted forward by Y time domain symbols, and Y is an integer greater than or equal to 1.

In a possible design, according to the first time domain range, receiving content corresponding to the i-th physical downlink shared channel transmission includes:

Determine the first time domain resource corresponding to the i-th physical downlink shared channel transmission from the first time domain range, and obtain the content corresponding to the i-th physical downlink shared channel transmission from the first time domain resource, the first time domain resource It is a subset or complete set of the first time domain range.

In a possible design, if the first time domain resource is a subset of the first time domain range,

The first time domain resource is determined by the start time domain symbol of the first time domain resource and the number of time domain symbols contained in the first time domain resource, and the number of time domain symbols contained in the first time domain resource is obtained according to the physical downlink control channel.

In a possible design, the starting time domain symbol of the first time domain resource is the starting time domain symbol of the first time domain range; or,

Is calculated based on the initial time domain symbol of the first physical downlink control channel transmission; or,

To obtain from the first symbol interval and the starting time domain symbol of the i-th physical downlink control channel transmission, the first symbol interval is the starting time domain symbol of the first physical downlink control channel transmission and the first physical downlink shared channel The symbol interval between the start time domain symbols of the transmission; or,

In order to obtain from the second symbol interval and the cutoff time domain symbol of the i-th physical downlink control channel transmission, the second symbol interval is the starting time domain symbol of the first physical downlink control channel transmission and the first physical downlink shared channel transmission The symbol interval between the cutoff time domain symbols;

Among them, the start time domain symbol of the first physical downlink shared channel transmission is obtained from the physical downlink control channel.

In a fourth aspect, an embodiment of the present application provides a physical downlink shared channel transmission method, where the method may be executed by a network device or a component of the network device (for example, a processor, a chip, or a chip system, etc.). Among them, the method includes:

The first time domain resource is used for the i-th physical downlink shared channel transmission. The first time domain resource is a subset or full set of the first time domain range corresponding to the i-th physical downlink control channel transmission, and the first time domain range It is determined by the time-domain resource information of the i-th physical downlink control channel transmission and/or the time-domain resource information of the i+1th physical downlink control channel transmission, where the i-th physical downlink shared channel transmission is that of the physical downlink shared channel One of the N repeated transmissions, the i-th physical downlink control channel transmission is one of the M repeated transmissions of the physical downlink control channel, and the i+1th physical downlink control channel transmission is the i-th physical downlink control channel In the next transmission of the transmission, the physical downlink control channel is used to schedule the physical downlink shared channel. Wherein, N is an integer greater than or equal to 2, and i is an integer greater than or equal to 1 and less than or equal to N.

Correspondingly, an embodiment of the present application also provides a communication device, which may be a network device, may also be a device in a network device, or a device that can be matched and used with a network device. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

In a possible design, the structure of the network device may include a processing unit and a transceiver unit. The transceiver unit is used to support communication between network devices and other devices, and the other devices may be terminal devices.

In one embodiment, the network device includes a transceiver unit;

The transceiver unit is configured to use the first time domain resource to perform the i-th physical downlink shared channel transmission, where the first time domain resource is a subset or the full set of the first time domain range corresponding to the i-th physical downlink control channel transmission, The first time domain range is determined by the time domain resource information of the i-th physical downlink control channel transmission and/or the time-domain resource information of the i+1th physical downlink control channel transmission, where the i-th physical downlink shared channel transmission is One of the N repetitive transmissions of the physical downlink shared channel, the i-th physical downlink control channel transmission is one of the M repetitive transmissions of the physical downlink control channel, and the i+1th physical downlink control channel transmission is the i-th For the next transmission of the second physical downlink control channel transmission, the physical downlink control channel is used to schedule the physical downlink shared channel. Wherein, N is an integer greater than or equal to 2, and i is an integer greater than or equal to 1 and less than or equal to N.

The network device may also include a storage unit, which is used for coupling with the processing unit and the transceiver unit, and stores the program instructions and data necessary for the network device.

Among them, the transceiver unit may also be called a communication unit, which is used to perform the operation of receiving or sending information or messages in the process. Optionally, the foregoing transceiver unit may also be divided into a receiving unit and a sending unit according to functions, where the receiving unit is used to perform a receiving operation, and the sending unit is used to perform a sending operation.

As an example, the processing unit may be a processor, the transceiving unit may be a transceiver, and the storage unit may be a memory. The transceiver is used to perform the operation of receiving or sending information or messages in the process, and the processor is used to perform corresponding processing operations on the information or messages in the process. Among them, the transceiver may also be called a communication interface for performing the process. The operation of receiving or sending information or messages.

In one embodiment, the network device includes a transceiver;

A transceiver, configured to use a first time domain resource to perform the i-th physical downlink shared channel transmission, where the first time domain resource is a subset or a complete set of the first time domain range corresponding to the i-th physical downlink control channel transmission, The first time domain range is determined by the time domain resource information of the i-th physical downlink control channel transmission and/or the time-domain resource information of the i+1th physical downlink control channel transmission, where the i-th physical downlink shared channel transmission is One of the N repetitive transmissions of the physical downlink shared channel, the i-th physical downlink control channel transmission is one of the M repetitive transmissions of the physical downlink control channel, and the i+1th physical downlink control channel transmission is the i-th For the next transmission of the second physical downlink control channel transmission, the physical downlink control channel is used to schedule the physical downlink shared channel. Wherein, N is an integer greater than or equal to 2, and i is an integer greater than or equal to 1 and less than or equal to N.

Optionally, the above transceivers may also be divided into receivers and transmitters according to their functions, where the receivers are used to perform receiving operations, and the transmitters are used to perform sending operations.

In a possible design, the TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission.

In a possible design, the K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by a control resource set corresponding to the physical downlink control channel; or,

The K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by the K control resource sets corresponding to the physical downlink control channel, and one control resource set corresponds to an activated TCI-state.

In a possible design, the first time domain range is determined by the start time domain symbol and the end time domain symbol; or,

The first time domain range is determined by the starting time domain symbol and the number of time domain symbols contained in the first time domain range; or,

The first time domain range is determined by the cut-off time domain symbol and the number of time domain symbols contained in the first time domain range; or,

The first time domain range is determined by the start time domain symbol, the end time domain symbol, and the number of time domain symbols included in the first time domain range;

Wherein, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, or, is the last time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, Or, the corresponding symbol after the first time domain symbol or the last time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel is shifted backward by X time domain symbols, and X is an integer greater than or equal to 1 ；

The cut-off time domain symbol is the corresponding symbol after the first time domain symbol of the time domain resource transmitted by the i+1th physical downlink control channel is shifted forward by Y time domain symbols, and Y is an integer greater than or equal to 1.

In a fifth aspect, the embodiments of the present application provide a physical downlink shared channel transmission method, where the method may be executed by a terminal device, or may be executed by a component of the terminal device (such as a processor, a chip, or a chip system, etc.). The method includes:

According to the time domain resource information of the M-th physical downlink control channel transmission, determine the first time-domain range corresponding to the first physical downlink shared channel transmission, where the M-th physical downlink control channel transmission is M times of the physical downlink control channel The last time in the repeated transmission, the first physical downlink shared channel transmission is the first time in N repeated transmissions of the physical downlink shared channel, and N is an integer greater than or equal to 2;

According to the first time domain range, the content corresponding to the first physical downlink shared channel transmission is received.

Correspondingly, an embodiment of the present application also provides a communication device, which may be a terminal device, or a device in a terminal device, or a device that can be matched and used with the terminal device. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

In a possible design, the structure of the terminal device may include a processing unit and a transceiving unit. The transceiving unit is used to perform operations of receiving or sending information or messages in the process, and the processing unit is used to perform operations on the information or messages in the process. Corresponding processing operations;

The processing unit is configured to determine the first time domain range corresponding to the first physical downlink shared channel transmission according to the time domain resource information of the M-th physical downlink control channel transmission, where the M-th physical downlink control channel transmission is the physical downlink The last of M repeated transmissions of the control channel, the first physical downlink shared channel transmission is the first of N repeated transmissions of the physical downlink shared channel, and N is an integer greater than or equal to 2;

The transceiver unit is configured to receive the content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range.

Optionally, the terminal device may also include a storage unit, the storage unit is used to couple with the processing unit and the transceiver unit, which stores the necessary program instructions and data of the terminal device, and the processing unit is used to call the instructions and data stored in the storage unit and execute the corresponding Operation.

Optionally, the transceiver unit may also be referred to as a communication unit, and is used to perform operations of receiving or sending information or messages in the process. The foregoing transceiver unit may also be divided into a receiving unit and a sending unit according to functions, where the receiving unit is used to perform a receiving operation, and the sending unit is used to perform a sending operation.

As an example, the processing unit may be a processor, the transceiving unit may be a transceiver, and the storage unit may be a memory. The transceiver is used to perform the operation of receiving or sending information or messages in the process, and the processor is used to perform the operations of receiving or sending information or messages in the process. Perform corresponding processing operations, where the transceiver may also be referred to as a communication interface, which is used to perform the operations of receiving or sending information or messages in the process.

In an implementation manner, the terminal device includes a processor and a transceiver;

The processor is configured to determine the first time domain range corresponding to the first physical downlink shared channel transmission according to the time domain resource information of the M-th physical downlink control channel transmission, where the M-th physical downlink control channel transmission is the physical downlink The last of M repeated transmissions of the control channel, the first physical downlink shared channel transmission is the first of N repeated transmissions of the physical downlink shared channel, and N is an integer greater than or equal to 2;

The transceiver is configured to receive the content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range.

Optionally, the above transceivers may also be divided into receivers and transmitters according to their functions, where the receivers are used to perform receiving operations, and the transmitters are used to perform sending operations.

The above-mentioned devices may be respectively arranged on separate chips, or at least part or all of them may be arranged on the same chip. For example, the processor can be further divided into an analog baseband processor and a digital baseband processor. Among them, the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be combined with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) Integrated on the same chip. Such a chip can be called a system on chip. Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the specific requirements of product design. The embodiment of the present application does not limit the specific implementation form of the foregoing device.

Through the embodiments of this application, the first time domain range corresponding to the first physical downlink shared channel transmission can be determined through the time domain resource information transmitted by the Mth physical downlink control channel, instead of waiting for the physical downlink control Only when the specific time domain resources of the physical downlink shared channel are parsed in the channel can the physical downlink shared channel be transmitted, thereby reducing the data transmission delay.

In a possible design, according to the time domain range corresponding to the i-1th physical downlink shared channel transmission, determine the second time domain range corresponding to the i-th physical downlink shared channel transmission, i is greater than 1 and less than N Integer

According to the second time domain range, the content corresponding to the i-th physical downlink shared channel is received.

Where the value of i is different, the obtained second time domain range is different, that is, a value of i has a one-to-one correspondence with the second time domain range.

In a possible design, the TCI-state used in the first physical downlink shared channel transmission is the same as the TCI-state used in the first physical downlink control channel transmission.

The TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission.

In a possible design, the K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by a control resource set corresponding to the physical downlink control channel; or,

The K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by the K control resource sets corresponding to the physical downlink control channel, and one control resource set corresponds to an activated TCI-state.

In a possible design, the first time domain range is determined by the starting time domain symbol and the number of time domain symbols contained in the first time domain range; the starting time domain symbol of the first time domain range is the Mth physical downlink The first time-domain symbol or the last time-domain symbol of the time-domain resource transmitted by the control channel is shifted backward by X time-domain symbols; or, it is the next symbol of the time slot where the M-th physical downlink control channel is transmitted. The first time domain symbol or the fourth time domain symbol of a time slot can of course be understood that it can also be any other time domain symbol of the next time slot, and X is an integer greater than or equal to 1.

The second time domain range is determined by the starting time domain symbol and the number of time domain symbols contained in the second time domain range; the starting time domain symbol of the second time domain range is the time corresponding to the i-1th physical downlink shared channel transmission The first time-domain symbol or the last time-domain symbol in the domain range is shifted backward by X time-domain symbols and the corresponding symbol, where X is an integer greater than or equal to 1.

In a possible design, according to the first time domain range, receiving content corresponding to the first physical downlink shared channel transmission includes:

Determine the first time domain resource corresponding to the first physical downlink shared channel transmission from the first time domain range, and obtain the content corresponding to the first physical downlink shared channel transmission from the first time domain resource, the first time domain resource It is a subset or complete set of the first time domain range.

In a possible design, if the first time domain resource is a subset of the first time domain range, the first time domain resource is comprised of the start time domain symbol of the first time domain resource and the time domain symbol of the first time domain resource. The number of domain symbols is determined, and the number of time domain symbols contained in the first time domain resource is obtained according to the physical downlink control channel.

In a possible design, the start time domain symbol of the first time domain resource is the start time domain symbol of the first time domain range, or is obtained from the physical downlink control channel.

In a possible design, according to the second time domain range, receiving content corresponding to the i-th physical downlink shared channel transmission includes:

Determine the second time domain resource corresponding to the i-th physical downlink shared channel transmission from the second time domain range, and obtain the content corresponding to the i-th physical downlink shared channel transmission from the second time domain resource. The second time domain resource is A subset or complete set of the second time domain range.

In a possible design, the second time domain resource is a subset of the second time domain range, and the first time domain resource is composed of the start time domain symbol of the first time domain resource and the time domain contained in the first time domain resource The number of symbols is determined, and the number of time domain symbols contained in the first time domain resource is obtained according to the physical downlink control channel.

In a possible design, the start time domain symbol of the second time domain resource is the start time domain symbol of the second time domain range, or, according to the first time domain corresponding to the first physical downlink shared channel transmission The starting time domain symbol of the resource is calculated.

Wherein, the start time domain symbol of the first time domain resource corresponding to the first physical downlink shared channel transmission is obtained from the physical downlink control channel.

In a sixth aspect, embodiments of the present application provide a physical downlink shared channel transmission method, where the method may be executed by a network device, or may be executed by a component of the network device (for example, a processor, a chip, or a chip system, etc.). Among them, the method includes:

The first time domain resource is used for the first physical downlink shared channel transmission. The first time domain resource is a subset or full set of the first time domain range corresponding to the first physical downlink shared channel transmission. The first time domain range is determined by The time domain resource information of the Mth physical downlink control channel transmission is determined, the Mth physical downlink control channel transmission is the last of M repetitive transmissions of the physical downlink control channel, and the first physical downlink shared channel transmission is the physical downlink For the first time in N repeated transmissions of the shared channel, N is an integer greater than or equal to 2.

Correspondingly, an embodiment of the present application also provides a communication device, which may be a network device, may also be a device in a network device, or a device that can be matched and used with a network device. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

In a possible design, the structure of the network device may include a processing unit and a transceiver unit. The transceiver unit is used to support communication between network devices and other devices, and the other devices may be terminal devices.

In one embodiment, the network device includes a transceiver unit;

The transceiver unit is configured to use the first time domain resource to perform the first physical downlink shared channel transmission. The first time domain resource is a subset or complete set of the first time domain range corresponding to the first physical downlink shared channel transmission. A time-domain range is determined by the time-domain resource information of the M-th physical downlink control channel transmission. The M-th physical downlink control channel transmission is the last of M repeated transmissions of the physical downlink control channel. The first physical downlink shared channel The transmission is the first of N repeated transmissions of the physical downlink shared channel, and N is an integer greater than or equal to 2.

The network device may also include a storage unit, which is used for coupling with the processing unit and the transceiver unit, and stores the program instructions and data necessary for the network device.

Among them, the transceiver unit may also be called a communication unit, which is used to perform the operation of receiving or sending information or messages in the process. Optionally, the foregoing transceiver unit may also be divided into a receiving unit and a sending unit according to functions, where the receiving unit is used to perform a receiving operation, and the sending unit is used to perform a sending operation.

As an example, the processing unit may be a processor, the transceiving unit may be a transceiver, and the storage unit may be a memory. The transceiver is used to perform the operation of receiving or sending information or messages in the process, and the processor is used to perform corresponding processing operations on the information or messages in the process. Among them, the transceiver may also be called a communication interface for performing the process. The operation of receiving or sending information or messages.

In one embodiment, the network device includes a transceiver;

The transceiver is configured to use the first time domain resource to perform the first physical downlink shared channel transmission. The first time domain resource is a subset or complete set of the first time domain range corresponding to the first physical downlink shared channel transmission. A time-domain range is determined by the time-domain resource information of the M-th physical downlink control channel transmission. The M-th physical downlink control channel transmission is the last of M repeated transmissions of the physical downlink control channel. The first physical downlink shared channel The transmission is the first of N repeated transmissions of the physical downlink shared channel, and N is an integer greater than or equal to 2.

Optionally, the above transceivers may also be divided into receivers and transmitters according to their functions, where the receivers are used to perform receiving operations, and the transmitters are used to perform sending operations.

According to the embodiment of this application, the first time domain range corresponding to the first physical downlink shared channel transmission can be determined through the time domain resource information of the Mth physical downlink control channel transmission, instead of waiting for the physical downlink control channel Only when the specific time domain resources of the physical downlink shared channel are analyzed can the physical downlink shared channel be transmitted, thereby reducing the data transmission delay.

In a possible design, the second time domain resource is used for the i-th physical downlink shared channel transmission, and the second time domain resource is a subset of the second time domain range corresponding to the i-th physical downlink shared channel transmission, or In the full set, the second time domain range is determined according to the time domain range corresponding to the i-1th physical downlink shared channel transmission, and i is an integer greater than or equal to 2.

A seventh aspect of the embodiments of the present application provides a processor, which is configured to execute the method provided in the foregoing first aspect, third aspect, or fifth aspect. The process of sending information or data and receiving information or data can be understood as the process of outputting the above-mentioned information or data by the processor, and the process of receiving the input of the above-mentioned information or data by the processor. Specifically, when outputting information or data, the processor outputs the above-mentioned information or data to the transceiver for transmission by the transceiver. Furthermore, after the above-mentioned information or data is output by the processor, other processing may be performed before it reaches the transceiver. Similarly, when the processor receives the aforementioned information or data input, the transceiver receives the aforementioned information or data and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information or data, the above-mentioned information or data may undergo other processing before being input to the processor.

Based on the foregoing principle, for example, the receiving physical shared channel mentioned in the method provided by the foregoing first aspect, third aspect, or fifth aspect can be understood as the transceiver inputting the received physical shared channel into the processor.

In this way, if there are no special instructions for the transmitting, sending, and receiving operations involved in the processor, or if it does not conflict with the actual function or internal logic in the relevant description, it can be understood more generally as The processor outputs and receives, inputs and other operations, instead of transmitting, sending and receiving directly by the radio frequency circuit and antenna.

In a specific implementation process, the foregoing processor may be a processor specifically configured to execute these methods, or a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor. The above-mentioned memory may be a non-transitory memory, such as a read only memory (ROM), which may be integrated with the processor on the same chip, or may be separately arranged on different chips. This application The embodiment does not limit the type of the memory and the setting mode of the memory and the processor.

An eighth aspect of the embodiments of the present application provides a chip system, which includes a processor and an interface. The chip system can be deployed in terminal equipment.

In a possible design, the processor is used to determine the first time domain resource range corresponding to the i-th physical shared channel transmission, and the interface is used to receive signals within the time domain resource range; the processor is used to determine the i-th physical share The channel transmits the corresponding first time domain resource, and processes the signal on the first time domain resource. The interface is also used to receive the physical control channel, and the processor is also used to decode the physical control channel to obtain the transmission parameters of the physical shared channel.

In a possible design, the processor is used to call and run the computer program stored in the memory from the memory to support the terminal device to implement the functions involved in the first aspect or the third aspect or the fifth aspect, such as determining the i-th time The first time domain resource range corresponding to the physical shared channel transmission, and the first time domain resource corresponding to the i-th physical shared channel transmission is determined, and so on. In a possible design, the chip system also includes a memory, which is used to store necessary program instructions and data for the terminal device. The chip system can be composed of chips, and can also include chips and other discrete devices.

A ninth aspect of the embodiments of the present application provides a computer-readable storage medium for storing computer software instructions used by the above-mentioned terminal device, including instructions for executing the method described in the above-mentioned first aspect, third aspect, or fifth aspect The procedures involved.

The tenth aspect of the embodiments of the present application provides a computer program product including a computer program or instruction, which when running on a computer, causes the computer to execute the method described in the first aspect, the third aspect, or the fifth aspect.

The eleventh aspect of the embodiments of the present application provides a computer program including a computer program or instructions, which when run on a computer, causes the computer to execute the method described in the first aspect, the third aspect, or the fifth aspect.

A twelfth aspect of the embodiments of the present application provides a processor, which is configured to execute the method provided in the foregoing second aspect, fourth aspect, or sixth aspect. In the process of executing the method provided by the second or fourth aspect or the sixth aspect, the process of sending information or data and receiving information or data can be understood as the process of outputting the foregoing information or data by the processor, and processing The process of receiving the above-mentioned information or data input. Specifically, when outputting the above-mentioned information or data, the processor outputs the above-mentioned information or data to the transceiver for transmission by the transceiver. Furthermore, after the above-mentioned information or data is output by the processor, other processing may be performed before it reaches the transceiver. Similarly, when the processor receives the aforementioned information or data input, the transceiver receives the aforementioned information or data and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information or data, the above-mentioned information or data may undergo other processing before being input to the processor.

The thirteenth aspect of the embodiments of the present application provides a chip system including a processor and an interface. The processor is used to call and run a computer program stored in the memory from the memory to support the network device to implement the second aspect or the fourth aspect. For the functions involved in the aspect or the sixth aspect, in a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data for the network device. The chip system can be composed of chips, and can also include chips and other discrete devices.

A fourteenth aspect of the embodiments of the present application provides a computer-readable storage medium for storing computer software instructions used for the above-mentioned network equipment, including instructions for executing the above-mentioned second or fourth or sixth aspects. The procedures involved in the method.

The fifteenth aspect of the embodiments of the present application provides a computer program product including a computer program or instruction, which when running on a computer, causes the computer to execute the method described in the second aspect, the fourth aspect, or the sixth aspect.

A sixteenth aspect of the embodiments of the present application provides a computer program including a computer program or instructions, which when run on a computer, causes the computer to execute the method described in the second aspect, the fourth aspect, or the sixth aspect.

A seventeenth aspect of the embodiments of the present application provides a system, which includes a terminal device and a network device.

Description of the drawings

Figure 1 is a schematic structural diagram of a MAC CE provided by an embodiment of this application;

Figure 2 is a system architecture diagram provided by an embodiment of the application;

FIG. 3 is an interaction diagram of a physical downlink shared channel transmission method provided by an embodiment of the application;

4 is a schematic diagram of using multiple TCI-states to transmit PDSCH in time sharing according to an embodiment of the application;

FIG. 5 is a schematic diagram of transmission of PDCCH and PDSCH according to an embodiment of this application;

FIG. 6 is a schematic diagram of another PDCCH and PDSCH transmission provided by an embodiment of this application;

FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of this application;

FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of this application;

FIG. 9 is a schematic diagram of a chip structure provided by an embodiment of the application;

FIG. 10 is a schematic structural diagram of a terminal device provided by an embodiment of this application.

Detailed ways

First, before describing the embodiments of the present application, the names or terms involved in the embodiments of the present application are introduced.

1. Beam

The embodiment of the beam in the NR protocol can be a spatial domain filter, or a spatial filter or a spatial parameter. The beam used to transmit a signal can be called a transmission beam (Tx beam), can be called a spatial domain transmission filter or a spatial transmission parameter (spatial transmission parameter); the beam used to receive a signal can be called To receive the beam (reception beam, Rx beam), it can be called a spatial domain receive filter or a spatial receive parameter (spatial RX parameter).

The transmitting beam may refer to the distribution of signal strength in different directions in space after a signal is transmitted through the antenna, and the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.

In addition, the beam may be a wide beam, or a narrow beam, or other types of beams. The beam forming technology may be beamforming technology or other technologies. The beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital/analog beamforming technology, etc.

Beams generally correspond to resources. For example, when performing beam measurement, network equipment uses different resources to measure different beams. The terminal equipment feeds back the measured resource quality, and the network equipment knows the quality of the corresponding beam. During data transmission, beam information can also be indicated through its corresponding resources. For example, the network device indicates the information of the receiving beam of the physical downlink shared channel of the terminal device through the resource indicated by the TCI indication information of the DCI.

Optionally, multiple beams with the same or similar communication characteristics are regarded as one beam. One or more antenna ports can be included in one beam, which are used to transmit data channels, control channels, and sounding signals. One or more antenna ports forming a beam can also be regarded as an antenna port set.

In the embodiments of the present application, unless otherwise specified, one beam corresponds to one resource, so the resource index can be used to uniquely identify the beam corresponding to the resource.

2. Resources

In beam measurement, the resource index can be used to uniquely identify the beam corresponding to the resource. The resource can be an uplink signal resource or a downlink signal resource. The uplink signal includes but is not limited to sounding reference signal (SRS) and demodulation reference signal (DMRS). Downlink signals include but are not limited to: channel state information reference signal (CSI-RS), cell specific reference signal (CS-RS), UE specific reference signal (user equipment specific reference signal, US-RS), demodulation reference signal (DMRS), and synchronization signal/physical broadcast channel block (synchronization system/physical broadcast channel block, SS/PBCH block). Among them, the SS/PBCH block may be referred to as a synchronization signal block (synchronization signal block, SSB) for short.

Resources can be configured through RRC (Radio Resource Control, radio resource control signaling) signaling. In terms of configuration structure, a resource is a data structure, including its corresponding uplink/downlink signal related parameters, such as the type of uplink/downlink signal, the resource element that carries the uplink/downlink signal, the transmission time and period of the uplink/downlink signal , The number of ports used to send uplink/downlink signals, etc. Each uplink/downlink signal resource has a unique index to identify the downlink signal resource. It is understandable that the index of the resource may also be referred to as the identifier of the resource, which is not limited in the embodiment of the present application.

3. TCI state (for example: TCI-state)

TCI-state is configured by the network equipment to each terminal device. Each TCI-state includes its own index tci-StateId and two QCL-Info. Each QCL-Info includes a cell field and bwp-Id, which respectively indicate which bwp (Bandwidth part) of which cell (cell) the TCI-state is applied to, that is, different cells or different bwps of the same cell can be configured with different QCL-Info . QCL-Info also includes a referenceSignal (reference signal), which is used to indicate which reference signal resource constitutes a QCL (quasi-co-location) relationship. In data transmission and channel measurement, beams correspond to reference signal resources, and one beam corresponds to one reference signal resource. Therefore, what reference signal resource constitutes a QCL relationship with here essentially refers to which beam constitutes a QCL relationship with. The QCL relationship means that two reference signal resources (or two antenna ports, the antenna port and the reference signal resource are also in a one-to-one correspondence) have some same spatial parameters. Which spatial parameters are the same depends on the type of the QCL-Info, that is, another field qcl-Type of the QCL-Info. qcl-Type can have four values {typeA, typeB, typeC, typeD}. Taking typeD as an example, typeD indicates that two reference signal resources have the same spatial receiving parameter information, that is, the two beams have the same receiving beam. At most one of the two QCL-Info included in the TCI-state can be TypeD.

The following takes an example to explain in detail how the network device instructs a terminal device to receive beam information of the data transmission beam through the TCI-state, including the configuration, activation and indication of the TCI-state.

(1) TCI-state configuration: The network device configures multiple TCI-states to the terminal device through RRC (Radio resource control) signaling. These TCI-states all include a QCL-Info of typeD.

(2) TCI-state activation: After the network device is configured with multiple TCI-states, it can also activate 8 TCI-states through MAC-CE (Medium Access Control-Control Element). These 8 TCI states have a one-to-one correspondence with the 8 values of the TCI field in the DCI. That is, which 8 TCI-states correspond to the 8 values of the TCI field of the DCI are determined through MAC CE signaling. The MAC CE structure used to activate TCI is shown in Figure 1. Among them, the fields T0 to T(N-2)x8+7 correspond to the respective TCI-states configured in the first step with the index from 0 to (N-2)x8+7. The size of each field is 1bit, and the value can be 0 or 1. A value of 1 indicates that the TCI-state is activated, and a value of 0 indicates that the TCI-state is not activated. Each MAC CE can theoretically have 8 activation fields with a value of 1, and the rest are all 0s. The TCI-states corresponding to the 8 fields with a value of 1 are the 8 TCI-states corresponding to the 8 values of the TCI field in the DCI. For example, the minimum value of 000 in the TCI field corresponds to the TCI-state with the smallest active index in the MAC CE, and so on, one to one correspondence. There are many types of MAC-CE. In addition to the MAC-CE used for TCI-state activation, there are many other types of MAC-CE.

(3) TCI-state indication: At present, the network device indicates a specific TCI-state through the TCI field in the DCI. For example, the value of the TCI field in the DCI sent by the network device to the terminal device is 000, which represents the TCI-state corresponding to 000 used by the data transmission beam. The referenceSignal contained in the QCL-Info whose type is typeD in the TCI-state is the CSI-RS (Channel State Information-Reference Signal) with index #1, indicating that the beam and the reference signal used for data transmission The beams corresponding to the CSI-RS with index #1 have the same receiving beam. The receiving beam corresponding to the CSI-RS with index #1 can be determined through a beam measurement procedure, which is known to the terminal device. Therefore, through the specific value of the TCI field, the terminal device can determine the receiving beam corresponding to the data transmission beam, and thus adopt the corresponding receiving beam to receive data.

The time domain symbols in the embodiments of the present application refer to orthogonal frequency division multiplexing (Orthogonal frequency divided multiplexing, OFDM) symbols. In addition, the time domain symbols can also be replaced with time units such as time slots and subframes. Wherein, in the embodiment of the present application, shifting backward by X time domain symbols or shifting forward by Y time domain symbols means that the X or Y time domain symbols are shifted under normal circumstances. If the X time domain symbols or the Y time domain symbols offset are uplink time domain symbols, the offset continues until the first downlink time domain symbol is encountered. For example, if the upstream time-domain symbol is offset by X time-domain symbols backward, the offset continues until the first downstream time-domain symbol is encountered. For example, after Y time-domain symbols are shifted forward, it is The uplink time domain symbol continues to shift forward until the first downlink time domain symbol is encountered.

The N times of PDSCH transmission in the embodiment of the present application correspond to the same or different RVs corresponding to the same data, for example, the same RV or different RVs among multiple RVs generated by encoding the same transport block (TB). N times of PDSCH transmission can also correspond to different TBs generated by the same data.

The M PDCCH repeated transmissions in the embodiment of this application carry the transmission parameters of the N PDSCH transmissions. For example, the content carried in the M PDCCH repeated transmissions is the same, which is the first PDSCH transmission of the N PDSCH transmissions. Parameters, for example, specific time domain resources, frequency domain resources, and modulation and coding schemes, etc. The content carried in the repeated PDCCH transmission of M times may also be different. For example, when M=N, the content carried in the i-th PDCCH transmission is the transmission parameter of the i-th PDSCH transmission.

The physical downlink shared channel transmission method of the embodiment of the present application may be applicable to a PDSCH fast transmission scenario, that is, a scenario where the transmission time of the PDSCH and the transmission time interval of the corresponding PDCCH are less than a preset threshold. The time corresponding to the preset threshold value is the time required for the terminal device to complete the PDCCH reception and switch to the PDSCH receiving beam. The preset threshold value can be reported to the network device through the terminal device. In some scenarios, The preset threshold value may be timeDurationForQCL.

The transmission time of the PDSCH and the transmission time interval of the corresponding PDCCH may be the first time domain symbol of the time domain resource corresponding to the first PDCCH transmission or the last time domain symbol of the time domain resource corresponding to the first PDSCH transmission. A time domain symbol or the time interval (for example: gap) or time offset (for example: offset) between a time domain symbol or the last time domain symbol, or the first time domain symbol of the time domain resource corresponding to the last PDCCH transmission or The last time domain symbol and the first time domain symbol of the time domain resource corresponding to the first PDSCH transmission or the time interval (for example: gap) or time offset (for example: offset) between the last time domain symbol, Or, between the first time domain symbol or the last time domain symbol of the time domain resource corresponding to the first PDCCH transmission and the first time domain symbol or the last time domain symbol of the time domain resource corresponding to the last PDSCH transmission Time interval (for example: gap) or time offset (for example: offset), or the first time domain symbol of the time domain resource corresponding to the last PDCCH transmission or the time when the last time domain symbol corresponds to the last PDSCH transmission The time interval (for example: gap) or time offset (for example: offset) between the first time domain symbol or the last time domain symbol of the domain resource. It should be understood that when M is equal to 1, there is one PDCCH transmission, and the above-mentioned first PDCCH transmission and the last PDCCH are both equivalent to this PDCCH.

It is understandable that the physical downlink shared channel transmission method in the embodiment of the present application may also be applicable to scenarios where the transmission time of the PDSCH and the transmission time interval of the corresponding PDCCH are greater than the preset threshold.

The first time domain range corresponding to the i-th PDSCH transmission mentioned in the embodiment of this application means that when the value of i is different, the determined first time-domain range is different, and the i-th PDSCH transmission is different from the i-th PDSCH transmission. PDSCH transmission corresponds to transmission in the first time domain range, where the first time domain resource corresponding to the i-th PDSCH transmission refers to the time domain resource actually used in the i-th PDSCH transmission, and the first time domain resource may be the first time domain resource. A complete set or subset of a time domain range, it can be understood that the first time domain range is different, of course the determined first time domain resources are also different, that is, when the value of i is different, the determined first time domain resource It is also different.

Please refer to FIG. 2, which is a schematic diagram of a network architecture applying an embodiment of the present application. The network architecture shown in FIG. 2 includes network devices and terminal devices, where the number of network devices may be one or more, and the number of terminal devices may be one or more.

It is understandable that the embodiments of the present application can be applied to a variety of wireless communication systems. The wireless communication systems may include but are not limited to long term evolution (LTE) systems, NR systems, future communication systems, etc., such as Future network or sixth-generation communication system, etc.

It can be understood that the number and form of the devices shown in FIG. 2 are used as examples, and do not constitute a limitation to the embodiments of the present application. For example, the actual application may include two or more network devices.

In the embodiment of the present application, a network device is a device deployed in a wireless access network to provide a wireless communication function for terminal devices. The network equipment may include various forms of macro base stations, micro base stations (also called small stations), relay stations, access points, and so on. In systems using different wireless access technologies, the names of network devices may be different, such as GSM (Global System for Mobile Communication) or CDMA (Code Division Multiple Access, Code Division Multiple Access) networks BTS (Base Transceiver Station), NB (NodeB) in WCDMA (Wideband Code Division Multiple Access), eNB or eNodeB in LTE (Long Term Evolution) Evolutional NodeB). The network device may also be a wireless controller in a CRAN (Cloud Radio Access Network) scenario. The network device may also be a base station device in a future 5G network or a network device in a future evolved PLMN network. The network device can also be a wearable device or a vehicle-mounted device. The network device may also be a transmission and reception point (Transmission and Reception Point, TRP). Network equipment can also refer to a general term for all equipment on the network side. For example, when multiple TRPs are used to transmit data to a terminal device, the multiple TRPs are collectively referred to as network equipment.

In the embodiments of this application, the terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed In the air (for example, on airplanes, balloons, satellites, etc.). The terminal equipment may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control ( Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety (transportation) Wireless terminals in safety), wireless terminals in smart cities, wireless terminals in smart homes, wearable terminal devices, and so on. The embodiments of this application do not limit the application scenarios. Terminal equipment can sometimes also be referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile Equipment, UE agent or UE device, etc. The terminal device can also be fixed or mobile.

The network device will use a specific transmission beam to send PDSCH to the terminal device on a specific time-frequency resource. Only when the terminal device knows the specific transmission beam and the specific time-frequency resource, will it adopt the correct reception beam (that is, the same as the transmission beam). Corresponding receiving beam) and receive the PDSCH sent by the network device on a specific time-frequency resource. In the 3GPP R15 protocol, the related information of the transmission beam can be indicated through the TCI (Transmission Configuration Indication) field in the Downlink Control Information (DCI) of the PDCCH. The size of the TCI field is 3 bits, which can specifically represent 8 different values (codepoint). Each value of the TCI field corresponds to a TCI-state index, and the TCI-state index can uniquely identify a TCI-state. The TCI-state includes several parameters, through which the relevant information of the transmission beam can be determined. For example, the TCI-state includes a reference signal resource, which is used to indicate the information of the transmission beam (the reference signal resource has a corresponding relationship with the beam), and the specific time-frequency resource can also be indicated by the DCI in the PDCCH. However, in the current technical solution, the terminal device must complete the decoding of the PDCCH and obtain the transmission parameters of the PDSCH before the network device can send the PDSCH. Otherwise, the terminal device cannot accurately receive the PDSCH sent by the network device. This method will cause data The transmission delay is relatively large.

For ultra-reliable and low latency communications (URLLC), the latency and reliability requirements for data transmission are relatively high. In order to improve the reliability of URLLC data transmission, multiple TCI-states may be used to repeatedly transmit the PDSCH in a time-sharing manner. The repeated PDSCHs carry the same or different RV (Redundant version) of the same data. Each TCI-state can correspond to one beam, and optionally, multiple beams of the same TRP can be used to repeatedly transmit PDSCH. Optionally, one TCI-state can also correspond to one TRP, that is, multiple TRPs are used to repeatedly transmit PDSCH, and each TRP uses one beam. For example, as shown in Figure 4, at two different times, one of the two TCI-states (TCI-state#1 and TCI-state#2) is used to repeatedly transmit the PDSCH to improve the reliability of data transmission. Wherein, PDSCH#1 and PDSCH#2 are repeated transmissions of the same data, for example, PDSCH#1 and PDSCH#2 carry the same or different RVs of the same data.

In the embodiment of the present application, when multiple TCI-states are used to repeatedly transmit the PDSCH in time sharing, the relevant parameters of each PDSCH transmission can be determined, such as the TCI-state corresponding to each PDSCH transmission, and the time-frequency resource location. In order to ensure the reliability of PDSCH transmission and low delay, the network device does not need to wait until the terminal device parses the PDCCH to obtain the time-frequency resource location of the PDSCH and the adopted TCI-state before sending the PDSCH, but can send the PDSCH in the terminal device Before analyzing the PDCCH to obtain the transmission parameters of the PDSCH, the PDSCH can be sent.

In the embodiment of this application, the terminal can determine the time domain range corresponding to each PDSCH transmission according to the time-frequency resource location information of the PDCCH. The TCI-state used in each PDSCH transmission can be the same as the TCI-state used in each PDCCH transmission. The state is the same. The terminal device can use the TCI-state corresponding to each PDSCH transmission to buffer the signals in the time domain corresponding to each PDSCH transmission. After subsequent analysis of the PDCCH, the specific time-frequency resources of each PDSCH transmission are obtained. Then, the signals on the specific time-frequency resources are combined and decoded to obtain each PDSCH transmission.

The network architecture and business scenarios described in the embodiments of this application are intended to explain the technical solutions of the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

Based on the network architecture shown in FIG. 2, the physical downlink shared channel transmission method provided by the embodiment of the present application will be introduced in detail below. During the introduction, the names of the information exchanged between the network device and the terminal device are used as examples, and do not constitute a limitation to the embodiments of the present application.

Please refer to FIG. 3, which is a schematic flowchart of a physical downlink shared channel transmission method provided by an embodiment of this application. The method may include but is not limited to the following steps:

Step S301: The network device uses the first time domain resource to perform the i-th physical downlink shared channel (PDSCH) transmission, where the first time domain resource is a subset of the first time domain range corresponding to the i-th PDSCH transmission Or a full set, the first time domain range is determined by time domain resource information of a physical downlink control channel (PDCCH), the PDCCH is used to schedule the PDSCH, and the i-th PDSCH is N repetitions For one transmission in transmission, the N is an integer greater than or equal to 2.

Step S302: The terminal device determines the first time domain range corresponding to the i-th PDSCH transmission according to the time domain resource information of the PDCCH;

In the embodiment of the present application, the PDCCH may be repeatedly transmitted or not, that is, it may be transmitted M=1 times, or may be transmitted M>1 times. The PDSCH is repeatedly transmitted N times, and the i-th PDSCH transmission may be one of the N repeated transmissions, where the PDSCH of the N repeated transmissions is the same or different redundancy version (Redundant version, RV) corresponding to the same data. The reliability of data transmission can be improved by repeatedly transmitting PDCSH N times.

The network device determines the first time domain range corresponding to the i-th PDSCH transmission according to the time-domain resource information of the PDCCH, and schedules the i-th PDSCH transmission to be transmitted within the determined first time domain range. Where the value of i is different, the determined first time domain range is different, that is, a value of i corresponds to a first time domain range.

Correspondingly, the terminal device determines the first time domain range corresponding to the i-th PDSCH transmission according to the time domain resource information of the PDCCH, further receives the signal in the first time domain range corresponding to the i-th PDSCH transmission, and buffers the first time domain range. Signal in the time domain. It can be understood that the manner in which the terminal device determines the first time domain range corresponding to the i-th PDSCH transmission is the same as the manner in which the network device determines the first time domain range corresponding to the i-th PDSCH transmission.

Optionally, in different transmission scenarios, the time-domain resource information of the PDCCH on which it is based is different. In this embodiment of the present application, the network device may directly or indirectly indicate the time-domain resource of each PDCCH transmission in advance. To the terminal equipment.

The following two transmission scenarios are shown in FIG. 5 and FIG. 6 to respectively illustrate the determination of the first time domain range where the i-th PDSCH transmission is located according to the time domain resource information of the PDCCH.

Please refer to FIG. 5, which is a schematic diagram of PDCCH and PDSCH transmission provided by an embodiment of this application. In this embodiment, both PDSCH and PDCCH can be repeatedly transmitted. For example, the number of repeated transmissions of PDSCH is N and the number of repeated transmissions of PDCCH Is M, where M can be equal to N, or M can be greater than N, or M can be less than N, which is not limited in the embodiment of the present application.

Among them, the i-th PDSCH transmission and the i-th PDCCH transmission can be paired for transmission, that is, one PDSCH transmission corresponds to one PDCCH transmission. Wherein, if the number of repeated PDCCH transmissions M is greater than the number of repeated PDSCH transmissions N, subsequent M-N PDCCH transmissions can be transmitted separately, and if the number of PDCCH repeated transmissions M is less than the number of PDSCH repeated transmissions N, the subsequent N-M PDSCH transmissions can be transmitted separately.

The above M repeated transmissions of the PDCCH may use K TCI-states for transmission, where the value of K may be less than M, or the value of K may be equal to M, or the value of K may be greater than M. If the value of K is less than M, the K TCI-states can be used for repeated PDCCH transmissions for M times. If the value of K is equal to M, then K TCI-states correspond to M PDCCH repeated transmissions one-to-one. If the value is greater than M, M TCI-states can be selected from K TCI-states for M PDCCH repeated transmissions, for example, the first K or the last K are selected.

Optionally, the value of K can be the default value specified by the protocol (for example, K=2), or the value reported by the terminal device to the network device through the capability reporting process, or it can be through RRC signaling or MAC CE signaling or The DCI signaling indicated to the terminal equipment may also be indirectly determined through other configuration parameters. For example, K TCI-states are K TCI-states activated by a Control Resource Set (CORESET) corresponding to PDCCH, that is, one CORESET can activate K TCI-states, or K TCI-states are The number of K TCI-states activated by the K control resource sets corresponding to the PDCCH, that is, one control resource set activates one activated TCI-state. Further optionally, the value of K may also be the number of blind space (for example, searchSpace) associated with CORESET corresponding to the PDCCH. The value of K may also be the number of listening opportunities (e.g., monitor occasion) included in the blind detection space (e.g., searchSpace) associated with the CORESET corresponding to the PDCCH. The value of K may also be the number of CORESETs associated with the blind space (for example, searchSpace) corresponding to the PDCCH. Alternatively, the K TCI-states may also be instructed by the network device to perform PDCCH repeated transmission to the terminal device through RRC signaling.

Optionally, the value of M can be determined using the above-mentioned method of determining the value of K. In addition, it can also be calculated by the value of K. For example, M is equal to K, or M is equal to an integer multiple of K, or M is equal to K plus a positive integer or minus a positive integer, etc.

Optionally, the value of N can be determined using the above-mentioned method of determining the value of K. In addition, it can also be calculated by the value of K or M. For example, N is equal to M, or N is equal to an integer multiple of M, or N is equal to M plus a positive integer or minus a positive integer, etc. For another example, N is equal to K, or N is equal to an integer multiple of K, or N is equal to K plus a positive integer or minus a positive integer.

Wherein, the above-mentioned M repeated transmissions of the PDCCH use K TCI-states for transmission, including but not limited to the following optional methods:

If M is equal to K, one of the above K TCI-states is used to perform one PDCCH transmission; that is, there is a one-to-one correspondence between the number of repeated transmissions of the PDCCH and the TCI-state.

If M is greater than K, the following two optional methods can be used to perform each PDCCH transmission.

The first optional method uses a polling method to sequentially traverse each TCI-state in a specific order to perform each PDCCH transmission. Specifically, the first TCI-state is used for the first transmission, the second TCI-state is used for the second transmission, and so on, the Kth TCI-state is used for the Kth transmission. After more than K transmissions, the TCI-state sequence used in the previous K transmissions is used again, and each TCI-state is sequentially traversed for transmission, that is, the K+1 transmission uses the first TCI-state, and the K+2 transmission Use the second TCI-state, and so on.

For example, assuming K=2 and M=6, that is, two TCI-states are used for 6 PDCCH transmissions, and the two TCI-states are respectively: TCI-state#1 and TCI-state#2. Then the TCI-states used in the 6 PDCCH transmissions are {TCI-state#1,TCI-state#2,TCI-state#1,TCI-state#2,TCI-state#1,TCI-state#2} . The i-th TCI-state in this method may refer to the i-th largest or i-th smallest TCI-state in the K TCI-states, that is, to traverse each TCI-state in sequence in the order of the size of the TCI-state index, or It may also be that each TCI-state is sequentially traversed according to the order of the K TCI-states in the configuration information. For example, the RRC signaling configures K TCI-states for repeated PDCCH transmission. Or, if the K TCI-states are the K TCI-states activated by the MAC-CE, each TCI-state may be traversed in sequence according to the order of the K TCI-states in the activation signaling MAC-CE. Or, if the K TCI-states are K TCI-states activated by K CORESETs, each TCI-state can also be traversed in order according to the size order of the K CORESET indexes corresponding to the K TCI-states.

Optionally, the TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission. For example, the first PDSCH transmission and the first PDCCH transmission use the same TCI-state, the second PDSCH transmission and the second PDCCH transmission use the same TCI-state, and so on.

When the number of repeated transmissions N of the PDSCH is greater than the number M of repeated transmissions of the PDCCH, the next N-M transmissions can sequentially traverse the TCI-states of the previous M transmissions to perform transmissions respectively. For example, the number of repeated transmissions of PDSCH is N=5, the number of repeated transmissions of PDCCH is M=3, and the repeated transmission of PDCCH uses three TCI-states. The three TCI-states are (TCI-state#1, TCI-state#). 2. TCI-state#3), then the first 3 repeated PDSCH transmissions use TCI-state#1, TCI-state#2 and TCI-state#3 respectively, and the next two PDSCH transmissions use TCI-state#1 and TCI respectively -state#2. Or, if the number of repeated transmissions of the PDSCH N=5, the number of repeated transmissions of the PDCCH M=3, and the repeated transmission of the PDCCH uses two TCI-states, the two TCI-states are (TCI-state#1, TCI-state #2), then the first 3 repeated PDSCH transmissions use TCI-state#1, TCI-state#2 and TCI-state#1, and the next two PDSCH transmissions can use TCI-state#1 and TCI-state#2, Alternatively, it may also be TCI-state#2 and TCI-state#1, that is, K TCI-states of the TCI-state are cyclically used sequentially, which is not limited in the embodiment of the present application.

The second alternative is to determine the number of times each TCI-state is used for repeated transmissions according to the value of M and the value of K, and then use each TCI-state for continuous transmission, and the determination is determined after continuous transmission. After the number of repetitions, another TCI-state is used for continuous repeated transmission. For example, K=2 and M=6, then the number of times each TCI-state is used for repeated transmission is 3. The two TCI-states are TCI-state#1 and TCI-state#2, and the two TCI-states are used. -state to perform 6 PDCCH repeated transmissions, each TCI-state corresponds to 3 PDCCH repeated transmissions, then the first 3 PDCCH transmissions use TCI-state#1, the next 3 PDCCH transmissions use TCI-state#2, and 6 PDCCH transmissions The TCI-state used for repeated transmission is {#1,#1,#1,#2,#2,#2}. For another example, assuming K=2 and M=5, it can be determined that the number of times one TCI-state is used for repeated transmission is 3, and the number of times the other TCI-state is used for repeated transmission is 2. If the two TCI-states -state is TCI-state#1 and TCI-state#2. The two TCI-states are used for 5 PDCCH repeated transmissions. TCI-state#1 corresponds to 3 PDCCH repeated transmissions, and TCI-state#2 corresponds to 2 PDCCH repeated transmissions, that is, the first 3 PDCCH transmissions use TCI-state#1, the next 2 PDCCH transmissions use TCI-state#2, and the 5 PDCCH transmissions use TCI-state in order {#1,#1,# 1,#2,#2}. Alternatively, TCI-state#1 corresponds to 2 PDCCH repeated transmissions, TCI-state#2 corresponds to 3 PDCCH repeated transmissions, that is, the first 2 PDCCH transmissions use TCI-state#1, and the next 3 PDCCH transmissions use TCI- State#2, the TCI-states used for 5 PDCCH transmissions are {#1, #1, #2, #2, #2} in order, which is not limited in the embodiment of this application.

Optionally, in this implementation manner, the TCI-state used in the i-th physical downlink shared channel transmission may be the same as the TCI-state used in the i-th physical downlink control channel transmission. For example, the first PDSCH transmission and the first PDCCH transmission use the same TCI-state, the second PDSCH transmission and the second PDCCH transmission use the same TCI-state, and so on. Optionally, in this implementation manner, M may be equal to N. Or, when M is less than N, that is, when the number of repeated transmissions of the PDSCH N is greater than the number of repeated transmissions of the PDCCH, the next N-M transmissions can also sequentially traverse the TCI-states of the previous M transmissions for transmission.

It is understandable that the transmission parameters of the aforementioned PDCCH transmissions and PDSCH transmissions (including but not limited to the number of transmissions M, N, the number of TCI-states K, the adopted TCI-state, the correspondence between PDCCH and PDSCH, etc.) can also be It is determined by other methods, for example, RRC signaling or MAC CE signaling or DCI information is used to indicate.

In order to facilitate the terminal device to obtain PDSCH related transmission parameters (such as specific time-frequency resource location, modulation and coding scheme, etc.) from the PDCCH, the network device transmits the PDSCH, and the network device can transmit the time domain resource information according to the i-th PDCCH transmission And/or the time domain resource information of the i+1th PDCCH transmission to determine the first time domain range corresponding to the ith PDSCH transmission, where the i+1th PDCCH transmission is the next transmission of the ith PDCCH transmission. The network device schedules the i-th PDSCH transmission to be transmitted within the determined first time domain range.

Further optionally, the frequency domain range in which the i-th PDSCH transmission is located may also be limited. For example, the frequency domain range may be the frequency domain resource corresponding to the entire bandwidth part (Bandwidth part, BWP), or it may be a frequency domain resource configured to the terminal. The frequency domain resource corresponding to the entire bandwidth of the cell may also be the frequency domain resource corresponding to the bandwidth of all the cells configured for the terminal device, and the network device schedules the i-th PDSCH transmission to be transmitted in the frequency domain range.

The first time domain range corresponding to the i-th PDSCH transmission may be determined by the start time domain symbol and the end time domain symbol. Alternatively, the first time domain range may also be determined by the start time domain symbol and the number of time domain symbols included in the first time domain range; or, the first time domain range may also be included by the end time domain symbol and the first time domain range The number of time domain symbols is determined. Alternatively, the first time domain range may also be determined by the start time domain symbol, the end time domain symbol, and the number of time domain symbols included in the first time domain range.

Wherein, the starting time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission may be the first time-domain symbol of the time domain resource of the i-th PDCCH transmission, or the first time-domain symbol corresponding to the i-th PDSCH transmission. The starting time domain symbol of a time domain range may be the last time domain symbol of the time domain resource of the i-th PDCCH transmission, or the starting time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission may be The first time domain symbol or the last time domain symbol of the time domain resource transmitted by the i-th PDCCH is shifted backward by X time domain symbols, and X is an integer greater than or equal to 1. The number of offset time-domain symbols X can be specified by the protocol by default, or it can be indicated to the terminal device by the network device through RRC signaling or MAC CE signaling or DCI information, or it can be reported to the network device by the terminal device, for example Reported to the network device through the terminal capability reporting process. For example, if X=1, and it is the offset from the last time domain symbol of the time domain resource of the i-th PDCCH transmission, the starting time-domain symbol of the first time domain range corresponding to the i-th PDSCH transmission may be the i-th The next time domain symbol after the last time domain symbol of the time domain resource transmitted by the second PDCCH.

Wherein, the cut-off time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission may correspond to the first time domain symbol of the time domain resource of the i+1th PDCCH transmission shifted forward by Y time-domain symbols The symbol of Y is an integer greater than or equal to 1. The number of offset time-domain symbols Y can be specified by the protocol by default, or can be indicated to the terminal device by the network device through RRC signaling or MAC CE signaling or DCI information, or it can be reported to the network device by the terminal device, for example Reported to the network device through the terminal capability reporting process. For example, Y=1, the cut-off time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission is a time-domain symbol before the first time-domain symbol of the time domain resource of the i+1th PDCCH transmission, that is The time domain range corresponding to the i-th PDSCH transmission cannot overlap with the time domain resources of the next PDCCH transmission. If Y is greater than 1, there is a certain symbol interval between the time domain range corresponding to the i-th PDSCH transmission and the time domain resource of the i+1th PDCCH transmission. For example, if the first time domain symbol of the i+1th PDCCH transmission is symbol 10, and the last time domain symbol of the time domain range corresponding to the i-th PDSCH transmission is symbol 8, the symbol interval is 1 symbol.

The number of time-domain symbols included in the first time-domain range may be specified by the protocol by default, or indicated to the terminal device by the network device, for example, indicated to the terminal device through RRC signaling or MAC CE signaling or DCI information, or the terminal device Reported to the network device, for example, reported to the network device through the terminal capability reporting process, or determined according to the start symbol and the end symbol of the first time domain range. Optionally, the number of symbols contained in the time domain range corresponding to each PDSCH transmission in the PDSCH repeatedly transmitted for N times may be the same, for example, N=3, the time domain range corresponding to the first PDSCH transmission, and the second PDSCH transmission The time domain range corresponding to the transmission and the number of time domain symbols included in the time domain range corresponding to the third PDSCH transmission may both be 3 time domain symbols.

Optionally, when the start time domain symbol and the number of time domain symbols are used to determine the first time domain range corresponding to the i-th PDSCH transmission, if the determined cut-off time domain symbol of the first time domain range exceeds a specific symbol threshold If the number of the cut-off time domain symbol is greater than the number of the symbol threshold, the symbol threshold is used as the cut-off time domain symbol, and the first time domain range is re-determined together with the above-mentioned start time domain symbol. The symbol threshold may be the symbol corresponding to the time domain symbol shifted forward by Y (Y greater than or equal to 1) time domain symbols of the starting time domain symbol of the i+1th PDCCH transmission. For example, when Y is equal to 1, the above symbol threshold refers to the i+th symbol threshold. The time domain symbol before the start time domain symbol of one PDCCH transmission. Or, if the start time domain symbol of the first time domain range determined according to the cutoff time domain symbol and the number of symbols is less than the specific symbol threshold, that is, the number of the start time domain symbol is less than the symbol threshold number, then the symbol threshold is used as The start time domain symbol, together with the above end time domain symbol, redefine the first time domain range.

When the above method uses the time domain resources of the i-th PDCCH transmission and the i+1-th PDCCH transmission to determine the first time-domain range of the i-th PDSCH transmission, if there is an i-th PDCCH transmission, there is no i+1-th PDCCH transmission. The second PDCCH transmission, that is, the number of PDCCH transmissions is equal to i. If the first time domain range corresponding to the i-th PDSCH transmission is determined by the start time domain symbol and the end time domain symbol, since there is no i+1th PDCCH transmission, Therefore, it is impossible to determine the cutoff time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission through the i+1th PDCCH transmission. In the embodiment of the present application, the first time domain corresponding to the i-th PDSCH transmission may be used The starting time domain symbol of the range and the number of time domain symbols included are determined, where the number of time domain symbols included in the first time domain range corresponding to the i-th PDSCH transmission can be determined by a previous PDSCH transmission (for example, the first PDSCH transmission). The number of time-domain symbols included in the first time-domain range of the second PDSCH transmission) is determined. For example, if the number of time-domain symbols included in the first time-domain range corresponding to each PDSCH transmission is equal, when the number of time-domain symbols included in the first time-domain range corresponding to the first PDSCH transmission is determined, then The number of time-domain symbols included in the first time-domain range corresponding to the i-th PDSCH transmission can be determined. Optionally, the number of time-domain symbols included in the first time-domain range of each subsequent PDSCH transmission can be determined according to the number of time-domain symbols included in the first time-domain range corresponding to the first PDSCH transmission, and the number of subsequent PDSCH transmissions can be determined. The first time domain range corresponding to PDSCH transmission. For example, the first time domain range of the first PDSCH transmission is determined by the start time domain symbol and the end time domain symbol. After the first time domain range of the first PDSCH transmission is determined, the number of time domain symbols included in the first time domain range of the first PDSCH transmission can be determined. For each subsequent PDSCH transmission, the first time domain corresponding to each subsequent PDSCH transmission can be determined according to the number of time domain symbols included in the first time domain range of this PDSCH transmission, and the start time domain symbol or the end time domain symbol range.

Further optionally, if even the i-th PDCCH transmission does not exist, that is, the number of PDCCH transmissions is less than i, and the number of repeated PDSCH transmissions is greater than the number of repeated PDCCH transmissions, then the first time domain range corresponding to the i-th PDSCH transmission The initial time domain symbol can be determined by the first time domain range corresponding to a previous PDSCH transmission. For example, the number of time domain symbols included in the first time domain range corresponding to the i-th PDSCH transmission is equal to the number of time domain symbols included in the first time domain range corresponding to the previous PDSCH transmission. Further, the start time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission may be the next time domain symbol of the end time domain symbol of the first time domain range corresponding to the i-1th PDSCH transmission, or may be It is the first downlink time domain symbol after the cutoff time domain symbol of the i-1th PDSCH transmission, or it can be the start time domain symbol or the cutoff time domain symbol of the i-1th PDSCH transmission shifted backward by X The symbol after the time domain symbol, X can be greater than or equal to 1, or it can be the first time domain symbol, or the fourth time domain symbol, or the first time domain symbol of the next time slot of the i-1th PDSCH transmission time slot. Downlink time domain symbols.

Optionally, in the foregoing method, if an uplink time domain symbol is included in the determined first time domain range, the uplink time domain symbol may be ignored in actual transmission. For example, the first time domain range includes 4 time domain symbols, including one uplink time domain symbol and three downlink time domain symbols. Then, when the PDSCH is actually transmitted, it will be transmitted on these three downlink time domain symbols. Or, if the uplink time domain symbols are included in the determined first time domain symbol range, this transmission is ignored in actual transmission. For example, according to the foregoing method, the first time domain range corresponding to each PDSCH transmission in the four PDSCH transmissions is determined. If one of the first time domain ranges includes uplink time domain symbols, the PDSCH is not transmitted in the first time domain range, that is, the PDSCH transmission is abandoned. Or, when determining the first time domain range corresponding to each PDSCH transmission, if an uplink time domain symbol is encountered, the uplink time domain symbol is skipped. For example, when the first time domain range is determined according to the starting time domain symbol and the number of time domain symbols contained in the first time domain range, if an uplink time domain symbol is encountered, the uplink time domain symbol is skipped to ensure the first time domain range The number of included downlink time domain symbols is equal to the number of time domain symbols included in the first time domain range.

Please refer to FIG. 6, another schematic diagram of PDCCH and PDSCH transmission provided in this embodiment of the application. In this embodiment, PDSCH and PDCCH are transmitted separately, that is, PDCCH transmission is performed first, and after PDCCH transmission is completed, PDSCH is repeatedly transmitted.

Optionally, the PDCCH can be transmitted once, or can be repeated transmission. In the embodiment of the present application, the number of repeated PDSCH transmissions is N, the number of PDCCH transmissions is M, and M can be an integer greater than or equal to 1, if M= 1, it means that the PDCCH is not repeatedly transmitted. Optionally, if M is greater than 1, M can be equal to N, or M can be greater than N, or M can be less than N, which is not limited in the embodiment of the present application.

The above M repeated transmissions of the PDCCH may use K TCI-states for transmission, where the value of K may be less than M, or the value of K may be equal to M, or the value of K may be greater than M. If the value of K is less than M, the K TCI-states can be used for repeated PDCCH transmissions for M times. If the value of K is equal to M, then K TCI-states correspond to M PDCCH repeated transmissions one-to-one. If the value is greater than M, M TCI-states can be selected from K TCI-states for M PDCCH repeated transmissions.

For the values of M, N, and K, reference may be made to the description of the embodiment in FIG. 5, which will not be repeated here. Wherein, the above-mentioned M repeated transmission of the PDCCH adopts the transmission mode of K TCI-states for transmission. The description of the embodiment in FIG. 5 can also be referred to, and the details are not repeated here.

Optionally, in this implementation manner, the TCI-state used in the i-th PDSCH transmission and the TCI-state used in the i-th PDCCH transmission may also be the same. If the number of repeated PDCCH transmissions M is less than the number of repeated PDSCH transmissions N, N-M PDSCH transmissions can also traverse the TCI-state used for the previous M transmissions. For details, please refer to the description of the embodiment in FIG. 5, which will not be repeated here.

In order to facilitate the terminal device to obtain the PDSCH related transmission parameters (such as specific time-frequency resource location, modulation and coding scheme, etc.) from the PDCCH, when the network device performs N times of repeated PDSCH transmission, the network device can be based on the M-th PDCCH time Domain resource information to determine the first time domain range corresponding to the first PDSCH transmission, where the M-th PDCCH transmission is the last of the M repeated transmissions of the PDCCH. If M is equal to 1 (that is, the PDCCH is not repeatedly transmitted), then The first PDSCH determines the first time domain range corresponding to the first PDSCH transmission according to the time domain resource information of the one PDCCH.

Optionally, the first time domain range corresponding to the other i-th PDSCH transmission may be determined according to the first time domain range corresponding to the i-1th PDSCH transmission, where i is an integer greater than 1, such as the second PDSCH transmission The transmission is determined according to the first time domain range corresponding to the first PDSCH transmission, the third PDSCH transmission is determined according to the first time domain range corresponding to the second PDSCH transmission, and so on.

Further optionally, the frequency domain range in which the N PDSCH transmissions are located may also be limited. For example, the frequency domain range may be the frequency domain resource corresponding to the entire bandwidth part (Bandwidth part, BWP), or it may be a cell configured to the terminal The frequency domain resource corresponding to the entire bandwidth of, may also be the frequency domain resource corresponding to the bandwidth of all cells configured for the terminal equipment, and the network equipment schedules N PDSCH transmissions to be transmitted in this frequency domain.

Optionally, the first time domain range corresponding to the first PDSCH transmission may be determined by the start time domain symbol of the first time domain range and the number of time domain symbols included in the first time domain range. The first time domain range corresponding to the first PDSCH transmission can also be determined by the start time domain symbol of the first time domain range and the end time domain symbol of the first time domain range, for example, the location of the start time domain symbol is used. The last time domain symbol or the last downlink time domain symbol of the time slot is used as the cut-off time domain symbol.

In a possible design, the first time domain symbol of the first time domain range corresponding to the first PDSCH transmission may be the first time domain symbol of the Mth PDCCH transmission or the last time domain symbol offset backward The symbol obtained after X time-domain symbols, X can be an integer greater than or equal to 1. If X=1, and it is offset backward from the last time domain symbol of the Mth PDCCH transmission, the first time domain symbol of the first time domain range corresponding to the first PDSCH transmission is the Mth PDCCH transmission The first downlink time domain symbol after the last time domain symbol. The foregoing value of X may be a default value specified by the protocol, or a value reported by the terminal device to the network device through the capability reporting process, or indicated to the terminal device by RRC signaling, MAC CE signaling, or DCI signaling.

Optionally, the start time domain symbol of the first time domain range corresponding to the first PDSCH transmission may also be the first time domain symbol of the next time slot of the time slot where the PDCCH corresponding to the PDSCH is located, or the fourth time domain symbol. Domain symbol. If the first time domain symbol is an uplink symbol, continue to shift backward until the first downlink time domain symbol is encountered, or shift forward until the first downlink time domain symbol is encountered. If the fourth time domain symbol is an uplink time domain symbol, continue to shift backward until the first downlink time domain symbol is encountered, or shift forward until the first downlink time domain symbol is encountered. It is understandable that the first time domain symbol and the fourth time domain symbol of the above next time slot are only examples, and they can also be other time domain symbols of the next time slot, such as the second, third, etc. , The embodiments of this application are not limited.

Except for the first PDSCH transmission, the other PDSCH transmissions (for example, the i-th PDSCH transmission, where i is an integer greater than 1) correspond to the start time domain symbol of the first time domain range, which can be the previous PDSCH transmission (ie (I-1th PDSCH transmission) corresponding to the first time domain symbol of the first time domain range or the last time domain symbol shifted backward by X time domain symbols, X is an integer greater than or equal to 1, If X = 1, and it is offset from the last time domain symbol of the previous PDSCH transmission, the starting time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission is corresponding to the i-1th PDSCH transmission The first time domain symbol after the last time domain symbol of the first time domain range. If X is greater than 1, the starting time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission may be the last time domain symbol of the first time domain range corresponding to the i-1th PDSCH transmission plus a fixed interval The time domain symbol after the.

The number of time-domain symbols included in the first time-domain range corresponding to each PDSCH transmission subsection may be equal. The specific value can be the default value specified by the protocol, or the value reported by the terminal device to the network device through the capability reporting process, or it can be indicated to the terminal device by RRC signaling, MAC CE signaling, or DCI signaling.

Or, in this embodiment, it can also be determined according to the number of downlink time domain symbols available for PDSCH transmission in the time slot where the PDSCH is located. For example, in this time slot, the number of downlink time domain symbols that are arranged after the PDCCH (if the PDCCH that schedules the PDSCH is also transmitted in this time slot) is X, and the number of repeated PDSCH transmissions is N, then each PDSCH transmission corresponds to The number of time-domain symbols included in the first time-domain range is X divided by Z and then rounded down.

The above-mentioned two PDCCH and PDSCH transmission modes in FIG. 5 and FIG. 6 are only examples, and do not constitute a limitation to the embodiment of the present application. PDCCH and PDSCH transmission may also be other transmission modes.

Optionally, if the terminal device receives a downlink signal or downlink channel within the first time domain corresponding to the i-th PDSCH transmission, the TCI-state used by the downlink signal or downlink channel is the same as the i-th time determined by the above method. When the TCI-states used for PDSCH transmission are not the same, the terminal device abandons the i-th PDSCH reception. Or, if the terminal device receives a downlink signal or downlink channel within the first time domain corresponding to the i-th PDSCH transmission, the TCI-state used by the downlink signal or downlink channel is the same as the i-th PDSCH transmission determined by the above method. When the adopted TCI-states are not the same, the terminal device abandons each PDSCH reception.

The network equipment adopts the TCI-state corresponding to the i-th PDSCH transmission, and transmits the i-th PDSCH transmission in the first time domain and the first frequency domain corresponding to the i-th PDSCH transmission, where the i-th PDSCH transmission It may be transmitted on the first time domain resource in the first time domain range corresponding to the i-th PDSCH transmission, and the first frequency domain resource where the i-th PDSCH transmission is located may be the sub-indicator in the first frequency domain range. Collection or complete works. Wherein, the first time domain resource may be a complete set or a subset of the first time domain range. For the determination method of the first time domain resource, reference may be made to the description of step S303, which will not be repeated here. Among them, the value of i is different, the first time domain range is different, correspondingly, the first time domain resource is also different, a value of i corresponds to a first time domain range, and a first time domain range is Including a first time domain resource.

Step S303: The terminal device receives the content corresponding to the i-th PDSCH transmission according to the first time domain range.

In the embodiment of the present application, the terminal device determines the first time domain resource corresponding to the i-th PDSCH transmission from the first time domain range, and obtains the content corresponding to the i-th PDSCH transmission from the first time domain resource. A time domain resource is a subset or a complete set of the first time domain range.

Wherein, if the first time domain resource is the full set of the first time domain range, that is, the first time domain range corresponding to the i-th PDSCH transmission is the first time domain resource corresponding to the i-th PDSCH transmission. In this case, the network device may not use the PDCCH to indicate the time domain resource allocation of the PDSCH transmitted repeatedly. The time domain resource allocation field in the PDCCH can be omitted. When the terminal device interprets the PDCCH, it considers that the time domain resource allocation field does not exist or the field length is 0, and it will skip this field.

If the first time domain resource is a subset of the first time domain range, the first time domain resource corresponding to the i-th PDSCH transmission may be determined by the start time domain symbol of the first time domain resource and the first time domain resource. The number of time-domain symbols included is determined. Among them, a variety of different ways can be used to define the starting time domain symbol and the number of time domain symbols contained in the first time domain resource. The two PDCCH and PDSCH transmission schematic diagrams of FIG. 5 and FIG. 6 are used as examples for illustration. Wherein, the foregoing regarding the first time domain resource being the complete set of the first time domain range is still applicable to the embodiments of FIG. 5 and FIG. 6.

If the PDCCH and PDSCH transmissions are performed in the manner shown in FIG. 5, several optional implementations of how to determine the first time domain resource corresponding to the i-th PDSCH transmission are described below (if the first time domain resource is the first time domain resource). For the complete set of ranges, please refer to the description of the foregoing embodiment. The following optional implementation manners mainly describe how to determine the first time domain resource when the first time domain resource is a subset of the first time domain range):

In the first optional implementation manner, the determined start time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission is used as the start time domain of the first time domain resource corresponding to the i-th PDSCH transmission Symbol. In this case, the network device may not indicate the start time domain symbol of PDSCH transmission through the PDCCH, but only indicate the number of time domain symbols for PDSCH transmission. For example, the PDCCH indicates the number of time domain symbols used in the first PDSCH transmission (that is, the number of time domain symbols contained in the first time domain resource corresponding to the first PDSCH transmission), and the protocol specifies the first time corresponding to each PDSCH transmission. The number of time domain symbols contained in the domain resources are all equal, so that the terminal device can obtain the number of time domain symbols contained in the first time domain resource corresponding to each PDSCH transmission. It is understandable that the number of time domain symbols contained in the first time domain resource corresponding to each PDSCH transmission may also be different, for example, it may be the number of time domain symbols contained in the first time domain resource corresponding to the first PDSCH transmission. An integer multiple of, or the number of time-domain symbols contained in the first time-domain resource corresponding to the first PDSCH transmission plus an integer. The integer can be the default value specified by the protocol, or the value reported by the terminal device to the network device through the capability reporting process, or it can be indicated to the terminal device by RRC signaling, MAC CE signaling, or DCI signaling.

In the second optional implementation manner, the start time domain symbol of the first time domain resource corresponding to the first PDSCH transmission may be determined by the downlink control information carried in the PDCCH. The start time domain symbol of the first time domain resource corresponding to the other i-th (i greater than 1) PDSCH transmission can be determined by the first symbol interval and the start time domain symbol of the time domain resource of the i-th PDCCH transmission. The symbol interval is the symbol interval between the start time domain symbol of the first time domain resource corresponding to the first PDSCH transmission and the start time domain symbol of the time domain resource of the first PDCCH transmission, that is, the first symbol interval is regarded as the first symbol interval. The symbol interval between the start time domain symbol of the first time domain resource corresponding to i (i>1) times of PDSCH transmission and the start time domain symbol of the time domain resource of the i-th PDCCH transmission. For example, if the symbol interval between the start time domain symbol interval of the first time domain resource corresponding to the first PDSCH transmission and the start time domain symbol of the first time domain resource of the first PDCCH transmission is 2, then the subsequent i( i>1) The symbol interval between the start time domain symbol of the first time domain resource corresponding to the second PDSCH transmission and the start time domain symbol of the time domain resource of the i-th PDCCH transmission is also 2, so that it can be based on the The starting time domain symbol and symbol interval 2 of the time domain resource for the i-th PDCCH transmission determine the starting time domain symbol of the first time-domain resource corresponding to the i-th PDSCH transmission.

Alternatively, it can also be determined by the second symbol interval and the cutoff time domain symbol of the time domain resource of the i-th PDCCH transmission. The second symbol interval is the start time domain symbol of the first time domain resource corresponding to the first PDSCH transmission and The symbol interval between the cut-off time domain symbols of the time domain resource for the first PDCCH transmission, that is, the second symbol interval is used as the starting time domain symbol of the first time domain resource corresponding to the i-th (i>1) PDSCH transmission and The symbol interval between the cut-off time domain symbols of the time domain resource for the i-th PDCCH transmission. The second symbol interval can reflect the symbol interval of the start time domain symbol of the first time domain resource corresponding to the i-th PDSCH transmission after the end time domain symbol of the time domain resource of the i-th PDCCH transmission.

In this case, the PDCCH indicates the number of time domain symbols of the time domain resource where the PDSCH is located. For example, it can indicate the number of time domain symbols contained in the first time domain resource corresponding to the first PDSCH transmission. For details, please refer to the first option. The selected implementation mode will not be repeated here.

In a third optional implementation manner, the PDCCH may be used to indicate the starting time domain symbol of the first time domain resource corresponding to the first PDSCH transmission and the number of time domain symbols included. The terminal device calculates the starting time domain symbols used by the first time domain resources corresponding to each of the remaining PDSCH transmissions and the number of time domain symbols included. For example, the start time domain symbol of the first time domain resource corresponding to the i-th (i>1) PDSCH transmission is the next one after the cut-off time domain symbol of the first time domain resource corresponding to the i-1th PDSCH transmission The time domain symbol, or the starting time domain symbol of the first time domain resource corresponding to the i-th (i>1) PDSCH transmission is the starting time domain symbol of the first time domain resource corresponding to the i-1th PDSCH transmission or The cut-off time domain symbol is shifted backward by X time domain symbols corresponding to the time domain symbol. The number of time domain symbols contained in the first time domain resource corresponding to the i-th (i>1) PDSCH transmission is equal to the number of time domain symbols contained in the first time domain resource corresponding to the first PDSCH transmission.

In this case, the PDCCH indicates the number of time domain symbols of the time domain resource where the PDSCH is located. For example, it can indicate the number of time domain symbols contained in the first time domain resource corresponding to the first PDSCH transmission. For details, please refer to the first option. The selected implementation mode will not be repeated here.

If the PDCCH and PDSCH transmissions are performed in the manner shown in FIG. 6, the following describes how to determine several optional implementation manners of the first time domain resource corresponding to the i-th PDSCH transmission (if the first time domain resource is the first time domain resource). For the complete set of ranges, please refer to the description of the foregoing embodiment. The following optional implementation manners mainly describe how to determine the first time domain resource when the first time domain resource is a subset of the first time domain range):

In the first optional implementation manner, the determined start time domain symbol of the first time domain range corresponding to the i-th PDSCH transmission is used as the start time domain of the first time domain resource corresponding to the i-th PDSCH transmission symbol. In this case, the network device may not indicate the starting time domain symbol of the time domain resource corresponding to the PDSCH transmission through the PDCCH, but may indicate the number of time domain symbols included in the first time domain resource corresponding to the PDSCH transmission. For example, the PDCCH indicates the number of time domain symbols contained in the first time domain resource corresponding to the first PDSCH transmission, and the protocol may stipulate that the number of time domain symbols contained in the first time domain resource corresponding to each PDSCH transmission are equal, so The terminal device can then obtain the number of time domain symbols contained in the first time domain resource corresponding to each PDSCH transmission. It is understandable that the number of time domain symbols contained in the first time domain resource corresponding to each PDSCH transmission may also be different, for example, it may be an integer of the number of time domain symbols contained in the first time domain resource corresponding to the first PDSCH transmission. Or the number of time-domain symbols contained in the first time-domain resource corresponding to the first PDSCH transmission plus an integer. The integer can be the default value specified by the protocol, or the value reported by the terminal device to the network device through the capability reporting process, or it can be indicated to the terminal device by RRC signaling, MAC CE signaling, or DCI signaling.

In the second optional implementation manner, the PDCCH is used to indicate the starting time domain symbol of the first time domain resource corresponding to the first PDSCH transmission and the number of time domain symbols included. The terminal device calculates the starting time domain symbol of the first time domain resource corresponding to each remaining PDSCH transmission and the number of time domain symbols contained therein. For example, the start time domain symbol of the first time domain resource corresponding to the i-th (i>1) PDSCH transmission is the next time after the cut-off time domain symbol of the first time domain resource corresponding to the i-1th PDSCH transmission. Domain symbol, or the start time domain symbol of the first time domain resource corresponding to the i-th (i>1) PDSCH transmission is the start time domain symbol or end of the first time domain resource corresponding to the i-1th PDSCH transmission The time domain symbol is a time domain symbol that is shifted backward by X time domain symbols, where X is an integer greater than or equal to 1.

The number of time domain symbols included in the first time domain resource corresponding to each PDSCH transmission may be the same or different. For details, refer to the first optional implementation manner, and details are not described herein again.

The foregoing exemplary explanation of how to determine the first time domain resource from the first time domain range by using FIG. 5 and FIG. 6 does not constitute a limitation to the embodiment of the present application.

Optionally, the first frequency domain resource corresponding to the i-th PDSCH transmission may be determined from the frequency domain resource allocation field in the PDCCH. The first frequency domain resource corresponding to the i-th PDSCH transmission is a subset or a full set of the determined first frequency domain range corresponding to the i-th PDSCH transmission.

After determining the first time domain resource and the first frequency domain resource actually used for the i-th PDSCH transmission, the i-th PDSCH transmission can be received from the time-frequency resource determined by the first time domain resource and the first frequency domain resource Content. Optionally, the transmission parameters used in the i-th PDSCH transmission can be obtained from the PDCCH, and the time-frequency resources, modulation and coding schemes, etc. actually used in each PDSCH transmission can be determined, and then the time actually used in each PDSCH transmission can be determined according to the transmission parameters. The signal on the frequency resource is demodulated and decoded to obtain the data carried by each PDSCH. Among them, the same or different RV versions of the same data are transmitted on each PDSCH. The terminal device can combine and decode these RV versions to complete high-reliability data transmission.

Wherein, the foregoing description of the embodiment in FIG. 5 and the description of the embodiment in FIG. 6 may be mutually cited, which is not limited by the embodiment of the present application.

Corresponding to the method given in the foregoing method embodiment, an embodiment of the present application also provides a corresponding communication device, and the communication device includes a corresponding module for executing the foregoing embodiment. The module can be software, hardware, or a combination of software and hardware.

Refer to FIG. 7, which is a schematic structural diagram of a communication device provided by an embodiment of this application. The communication device 700 shown in FIG. 7 may include a transceiving unit 701 and a processing unit 702. The transceiving unit 701 may include a transmitting unit and a receiving unit. The transmitting unit is used to implement a transmitting function, the receiving unit is used to implement a receiving function, and the transmitting and receiving unit 701 may implement a transmitting function and/or a receiving function. The transceiver unit can also be described as a communication unit.

The communication device 700 may be a terminal device, a device in a terminal device, or a device that can be matched and used with the terminal device.

In one design, the processing unit 702 is configured to determine the first time domain range corresponding to the i-th physical downlink shared channel transmission according to the time domain resource information of the physical downlink control channel, and the physical downlink control channel is used to schedule all For the physical downlink shared channel, the i-th physical downlink shared channel transmission is one of N repeated transmissions of the physical downlink shared channel, where N is an integer greater than or equal to 2, and the i is greater than or An integer equal to 1 and less than or equal to N;

The transceiver unit 701 is configured to receive content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range.

The communication device 700 may also be a network device, a device in a network device, or a device that can be matched and used with the network device.

In one design, the transceiver unit 701 is configured to use the first time domain resource to perform the i-th physical downlink shared channel transmission, and the first time domain resource is the first time domain range corresponding to the i-th physical downlink shared channel transmission. A subset or a complete set, the first time domain range is determined by time domain resource information of a physical downlink control channel, the physical downlink control channel is used to schedule the physical downlink shared channel, and the i-th physical downlink shared channel transmission It is one transmission in N repeated transmissions, and the N is an integer greater than or equal to 2.

For details, please refer to the description of the method embodiment, which will not be repeated here.

Figure 8 shows a schematic diagram of the structure of a communication device. The communication device 800 may be a network device, a terminal device, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip or a chip system that supports the terminal device to implement the above method. , Or processor, etc. The device can be used to implement the method described in the foregoing method embodiment, and for details, please refer to the description in the foregoing method embodiment.

The communication device 800 may include one or more processors 801. The processor 801 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, and process The data of the software program.

Optionally, the communication device 800 may include one or more memories 802, on which computer programs or instructions 804 may be stored, and the instructions may be executed on the processor 801, so that the device 800 can execute The method described in the above method embodiment. Optionally, the memory 802 may also store data. The processor 801 and the memory 802 can be provided separately or integrated together.

Optionally, the communication device 800 may further include a transceiver 805 and an antenna 806. The transceiver 805 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing the transceiver function. The transceiver 805 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., for implementing the receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing the transmitting function.

The communication device 800 is a terminal device: the processor 801 is configured to execute step 302 in FIG. 3. The transceiver 805 is used to perform step 303 in FIG. 3.

The communication device 800 is a network device: the transceiver 805 is used to perform step 301 in FIG. 3.

In another alternative design, the processor 801 may include or be connected to a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces, or interface circuits used to implement the receiving and transmitting functions can be separated or integrated. The foregoing transceiver circuit, interface, or interface circuit may be used for code/data reading and writing, or the foregoing transceiver circuit, interface, or interface circuit may be used for signal transmission or transmission.

In another possible design, optionally, the processor 801 may store a computer program or instruction 803, and the computer program or instruction 803 runs on the processor 801 to enable the device 800 to execute the method described in the foregoing method embodiment. Methods. The computer program or instruction 803 may be solidified in the processor 801. In this case, the processor 801 may be implemented by hardware.

In another possible design, the communication device 800 may include a circuit, and the circuit may implement the sending or receiving or communication functions in the foregoing method embodiments. The processor and transceiver described in this application can be implemented in integrated circuit (IC), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, application specific integrated circuit (ASIC), printed circuit board ( printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), and P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiment may be a network device or a terminal device, but the scope of the communication device described in this application is not limited to this, and the structure of the communication device may not be limited by FIG. 8. The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) Independent integrated circuit IC, or chip, or, chip system or subsystem;

(2) A set of one or more ICs. Optionally, the set of ICs may also include storage components for storing data and instructions;

(3) ASIC, such as modem (MSM);

(4) Modules that can be embedded in other equipment;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handhelds, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others, etc.

For the case that the communication device can be a chip or a chip system, refer to the schematic diagram of the chip structure shown in FIG. 9. The chip 900 shown in FIG. 9 includes a processor 901 and an interface 902. The number of processors 901 may be one or more, and the number of interfaces 902 may be more than one.

For the case where the chip is used to implement the function of the terminal device in the embodiment of the present application: the interface 902 is used to receive a signal in the first time domain corresponding to the i-th physical downlink shared channel transmission. The processor 901 is configured to process the signal in the first time domain range, for example, determine the first time domain resource corresponding to the i-th physical downlink shared channel transmission, and process the signal on the first time domain resource to obtain The i-th physical downlink shared channel transmits the corresponding content. The interface 902 is also used to output uplink information or uplink signals.

Optionally, the chip further includes a memory 903, and the memory 903 is used to store necessary program instructions and data for the terminal device.

For the case where the chip is used to implement the function of the network device in the embodiment of the present application: the interface 902 is used to use the first time domain resource for the i-th physical downlink shared channel transmission, and the first time domain resource is the i-th physical downlink shared channel The corresponding subset or full set of the first time domain range is transmitted. The processor 901 is configured to determine the first time domain range where the i-th physical downlink shared channel transmission is located according to the time domain resource information of the physical downlink control channel.

Optionally, the chip further includes a memory 903, and the memory 903 is used to store necessary program instructions and data for the network device.

Figure 10 provides a schematic structural diagram of a terminal device. For ease of description, FIG. 10 only shows the main components of the terminal device. As shown in FIG. 10, the terminal device 1000 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, and to control the entire terminal, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The control circuit may include a radio frequency circuit, and the radio frequency circuit is mainly used for conversion of a baseband signal and a radio frequency signal and processing of the radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

When the terminal device is turned on, the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program. When sending data wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit processes the baseband signal to obtain a radio frequency signal and sends the radio frequency signal out in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives the radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and performs processing on the data. deal with.

For ease of description, FIG. 10 only shows a memory and a processor. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.

As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data. The central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program. The processor in FIG. 10 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected by technologies such as a bus. Those skilled in the art can understand that the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

Those skilled in the art may also understand that various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of the two. Whether such a function is implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be construed as going beyond the protection scope of the embodiments of the present application.

The present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer-readable storage medium is executed by a computer, the function of any of the foregoing method embodiments is realized.

This application also provides a computer program product, which, when executed by a computer, realizes the functions of any of the foregoing method embodiments.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.

A person of ordinary skill in the art can understand that the various digital numbers such as first and second involved in the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application, but also indicate a sequence.

The corresponding relationships shown in the tables in this application can be configured or pre-defined. The value of the information in each table is only an example, and can be configured to other values, which is not limited in this application. When configuring the correspondence between the information and each parameter, it is not necessarily required to configure all the correspondences indicated in the tables. For example, in the table in this application, the corresponding relationship shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, and so on. The names of the parameters shown in the titles in the above tables may also adopt other names that can be understood by the communication device, and the values or expressions of the parameters may also be other values or expressions that can be understood by the communication device. When the above tables are implemented, other data structures can also be used, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables. Wait.

The pre-definition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, curing, or pre-fired.

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

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

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

Claims (35)

A physical downlink shared channel transmission method, characterized in that it comprises: Determine the first time domain range corresponding to the i-th physical downlink shared channel transmission according to the time-domain resource information of the physical downlink control channel. The physical downlink control channel is used to schedule the physical downlink shared channel, and the i-th physical downlink shared channel is used to schedule the physical downlink shared channel. The downlink shared channel transmission is one of the N repeated transmissions of the physical downlink shared channel, where N is an integer greater than or equal to 2, and the i is an integer greater than or equal to 1 and less than or equal to N; According to the first time domain range, receiving content corresponding to the i-th physical downlink shared channel transmission. The method of claim 1, wherein: The transmission configuration indication-state TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission, and the i-th physical downlink control channel transmission is the physical One of the M repeated transmissions of the downlink control channel, where M is an integer greater than or equal to 2. The method of claim 2, wherein: The K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by a control resource set corresponding to the physical downlink control channel; or, The K TCI-states used for the M repeated transmissions of the physical downlink control channel are K TCI-states activated by the K control resource sets corresponding to the physical downlink control channel, where one control resource set corresponds to an activated TCI -state; Wherein, the K is an integer greater than or equal to 1. The method according to any one of claims 1-3, wherein the time domain resource information of the physical downlink control channel comprises time domain resource information of the i-th physical downlink control channel transmission and/or the (i+1)th time domain resource information. Time domain resource information transmitted by the secondary physical downlink control channel. The method of claim 4, wherein: The first time domain range is determined by a start time domain symbol and an end time domain symbol; or, The first time domain range is determined by a starting time domain symbol and the number of time domain symbols included in the first time domain range; or, The first time domain range is determined by the cut-off time domain symbol and the number of time domain symbols included in the first time domain range; or, The first time domain range is determined by a start time domain symbol, an end time domain symbol, and the number of time domain symbols included in the first time domain range; Wherein, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, or is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel. The last time domain symbol, or, is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel or the last time domain symbol offset by X time domain symbols, The X is an integer greater than or equal to 1; The cut-off time domain symbol is the corresponding symbol after the first time domain symbol of the time domain resource transmitted by the i+1th physical downlink control channel is shifted forward by Y time domain symbols, where Y is greater than or An integer equal to 1. The method according to any one of claims 1 to 3, wherein the first time domain range is determined by a starting time domain symbol and the number of time domain symbols contained in the first time domain range; If the i is equal to 1, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the Mth physical downlink control channel or the last time domain symbol is shifted backward by X time domain symbols Corresponding symbol; or, is the first time domain symbol or the fourth time domain symbol of the next time slot of the time slot where the M-th physical downlink control channel transmission is located, and the X is an integer greater than or equal to 1; Wherein, the M-th physical downlink control channel transmission is the last of M repeated transmissions of the physical downlink control channel; or, If the i is greater than 1, the starting time domain symbol is the first time domain symbol or the last time domain symbol of the time domain range corresponding to the i-1th physical downlink shared channel transmission, which is offset backward by X For the corresponding symbol after the time domain symbol, the X is an integer greater than or equal to 1. The method according to any one of claims 1 to 3, wherein the receiving content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range comprises: Determine the first time domain resource corresponding to the i-th physical downlink shared channel transmission from the first time domain range, and obtain the i-th physical downlink shared channel transmission corresponding to the first time domain resource The content of the first time domain resource is a subset or a complete collection of the first time domain range. 8. The method of claim 7, wherein if the first time domain resource is a subset of the first time domain range, The first time domain resource is determined by the start time domain symbol of the first time domain resource and the number of time domain symbols contained in the first time domain resource, and the number of time domain symbols contained in the first time domain resource Is obtained according to the physical downlink control channel. The method according to claim 8, wherein the start time domain symbol of the first time domain resource is the start time domain symbol of the first time domain range; or, Is calculated based on the start time domain symbol of the first physical downlink shared channel transmission; or, Is obtained from the first symbol interval and the start time domain symbol of the i-th physical downlink control channel transmission, where the first symbol interval is the start time domain symbol of the first physical downlink control channel transmission and the first physical downlink The symbol interval between the start time domain symbols of the shared channel transmission; or, Is obtained according to the second symbol interval and the cutoff time domain symbol of the i-th physical downlink control channel transmission, the second symbol interval is the starting time domain symbol of the first physical downlink control channel transmission and the first physical downlink shared The symbol interval between the cut-off time domain symbols for channel transmission; Wherein, the start time domain symbol of the first physical downlink shared channel transmission is obtained from the physical downlink control channel. A physical downlink shared channel transmission method, characterized in that it comprises: The first time domain resource is used for the i-th physical downlink shared channel transmission, where the first time domain resource is a subset or full set of the first time domain range corresponding to the i-th physical downlink shared channel transmission, and the first The time domain range is determined by the time domain resource information of the physical downlink control channel, the physical downlink control channel is used to schedule the physical downlink shared channel, and the i-th physical downlink shared channel transmission is one of N repeated transmissions , The N is an integer greater than or equal to 2. The method of claim 10, wherein: The TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission, and the i-th physical downlink control channel transmission is the M of the physical downlink control channel. In one transmission in repeated transmissions, the M is an integer greater than or equal to 2, and the M is equal to the N. The method of claim 11, wherein: The K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states associated with a control resource set corresponding to the physical downlink control channel; or The K TCI-states used for the M repeated transmissions of the physical downlink control channel are the K TCI-states associated with the K control resource sets corresponding to the physical downlink control channel, and one control resource set is used to associate one TCI-state; Wherein, the K is greater than or equal to 1. The method according to any one of claims 10-12, wherein the time domain resource information of the physical downlink control channel comprises time domain resource information of the i-th physical downlink control channel transmission and/or the (i+1)th time domain resource information. Time domain resource information transmitted by the secondary physical downlink control channel. The method according to claim 13, wherein the first time domain range is determined by a start time domain symbol and an end time domain symbol; or, The first time domain range is determined by a starting time domain symbol and the number of time domain symbols included in the first time domain range; or, The first time domain range is determined by the cut-off time domain symbol and the number of time domain symbols included in the first time domain range; or, The first time domain range is determined by a start time domain symbol, an end time domain symbol, and the number of time domain symbols included in the first time domain range; Wherein, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, or is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel. The last time domain symbol, or, is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel or the last time domain symbol offset by X time domain symbols, The X is an integer greater than or equal to 1; The cut-off time domain symbol is the corresponding symbol after the first time domain symbol of the time domain resource transmitted by the i+1th physical downlink control channel is shifted forward by Y time domain symbols, where Y is greater than or An integer equal to 1. The method according to any one of claims 10-12, wherein the first time domain range is determined by a starting time domain symbol and the number of time domain symbols included in the first time domain range; If the i is equal to 1, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the Mth physical downlink control channel or the last time domain symbol is shifted backward by X time domain symbols Corresponding symbol; or, is the first time domain symbol or the fourth time domain symbol of the next time slot of the time slot where the M-th physical downlink control channel transmission is located, and the X is an integer greater than or equal to 1; Wherein, the M-th physical downlink control channel transmission is the last of M repeated transmissions of the physical downlink control channel; or, If the i is greater than 1, the starting time domain symbol is the first time domain symbol or the last time domain symbol of the time domain range corresponding to the i-1th physical downlink shared channel transmission, which is offset backward by X For the corresponding symbol after the time domain symbol, the X is an integer greater than or equal to 1. A communication device, characterized in that it comprises a processing unit and a transceiver unit; The processing unit is configured to determine the first time domain range corresponding to the i-th physical downlink shared channel transmission according to the time domain resource information of the physical downlink control channel, and the physical downlink control channel is used to schedule the physical downlink shared channel The i-th physical downlink shared channel transmission is one of the N repeated transmissions of the physical downlink shared channel, where N is an integer greater than or equal to 2, and the i is greater than or equal to 1, and less than Or an integer equal to N; The transceiver unit is configured to receive content corresponding to the i-th physical downlink shared channel transmission according to the first time domain range. The communication device according to claim 16, wherein: The transmission configuration indication-state TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission, and the i-th physical downlink control channel transmission is the physical One of the M repeated transmissions of the downlink control channel, where M is an integer greater than or equal to 2. The communication device according to claim 17, wherein: The K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states activated by a control resource set corresponding to the physical downlink control channel; or, The K TCI-states used for the M repeated transmissions of the physical downlink control channel are K TCI-states activated by the K control resource sets corresponding to the physical downlink control channel, where one control resource set corresponds to an activated TCI -state; Wherein, the K is an integer greater than or equal to 1. The communication device according to any one of claims 16-18, wherein the time domain resource information of the physical downlink control channel comprises time domain resource information of the i-th physical downlink control channel transmission and/or the i+th Time domain resource information for one physical downlink control channel transmission. The communication device according to claim 19, wherein: The first time domain range is determined by a start time domain symbol and an end time domain symbol; or, The first time domain range is determined by a starting time domain symbol and the number of time domain symbols included in the first time domain range; or, The first time domain range is determined by the cut-off time domain symbol and the number of time domain symbols included in the first time domain range; or, The first time domain range is determined by a start time domain symbol, an end time domain symbol, and the number of time domain symbols included in the first time domain range; Wherein, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, or is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel. The last time domain symbol, or, is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel or the last time domain symbol offset by X time domain symbols, The X is an integer greater than or equal to 1; The cut-off time domain symbol is the corresponding symbol after the first time domain symbol of the time domain resource transmitted by the i+1th physical downlink control channel is shifted forward by Y time domain symbols, where Y is greater than or An integer equal to 1. The communication device according to any one of claims 16-18, wherein the first time domain range is determined by a starting time domain symbol and the number of time domain symbols included in the first time domain range; If the i is equal to 1, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the Mth physical downlink control channel or the last time domain symbol is shifted backward by X time domain symbols Corresponding symbol; or, is the first time domain symbol or the fourth time domain symbol of the next time slot of the time slot where the M-th physical downlink control channel transmission is located, and the X is an integer greater than or equal to 1; Wherein, the M-th physical downlink control channel transmission is the last of M repeated transmissions of the physical downlink control channel; or, If the i is greater than 1, the starting time domain symbol is the first time domain symbol or the last time domain symbol of the time domain range corresponding to the i-1th physical downlink shared channel transmission, which is offset backward by X For the corresponding symbol after the time domain symbol, the X is an integer greater than or equal to 1. The communication device according to any one of claims 16-18, wherein: The transceiving unit is further configured to determine the first time domain resource corresponding to the i-th physical downlink shared channel transmission from the first time domain range, and obtain the first time domain resource from the first time domain resource The content corresponding to i physical downlink shared channel transmission, the first time domain resource is a subset or a complete set of the first time domain range. The communication device of claim 22, wherein if the first time domain resource is a subset of the first time domain range, The first time domain resource is determined by the start time domain symbol of the first time domain resource and the number of time domain symbols contained in the first time domain resource, and the number of time domain symbols contained in the first time domain resource Is obtained according to the physical downlink control channel. The communication device according to claim 23, wherein the start time domain symbol of the first time domain resource is the start time domain symbol of the first time domain range; or, Is calculated based on the start time domain symbol of the first physical downlink shared channel transmission; or, Is obtained from the first symbol interval and the start time domain symbol of the i-th physical downlink control channel transmission, where the first symbol interval is the start time domain symbol of the first physical downlink control channel transmission and the first physical downlink The symbol interval between the start time domain symbols of the shared channel transmission; or, Is obtained according to the second symbol interval and the cutoff time domain symbol of the i-th physical downlink control channel transmission, the second symbol interval is the starting time domain symbol of the first physical downlink control channel transmission and the first physical downlink shared The symbol interval between the cut-off time domain symbols for channel transmission; Wherein, the start time domain symbol of the first physical downlink shared channel transmission is obtained from the physical downlink control channel. A communication device, characterized in that it comprises a transceiver unit, The transceiving unit is configured to use a first time domain resource to perform the i-th physical downlink shared channel transmission, and the first time domain resource is a subset of the first time domain range corresponding to the i-th physical downlink shared channel transmission Or a full set, the first time domain range is determined by time domain resource information of a physical downlink control channel, the physical downlink control channel is used to schedule the physical downlink shared channel, and the i-th physical downlink shared channel transmission is N In one transmission of repeated transmissions, the N is an integer greater than or equal to 2. The communication device according to claim 25, wherein: The TCI-state used in the i-th physical downlink shared channel transmission is the same as the TCI-state used in the i-th physical downlink control channel transmission, and the i-th physical downlink control channel transmission is the M of the physical downlink control channel. In one transmission in repeated transmissions, the M is an integer greater than or equal to 2, and the M is equal to the N. The communication device according to claim 26, wherein: The K TCI-states used for M repeated transmissions of the physical downlink control channel are K TCI-states associated with a control resource set corresponding to the physical downlink control channel; or The K TCI-states used for the M repeated transmissions of the physical downlink control channel are the K TCI-states associated with the K control resource sets corresponding to the physical downlink control channel, and one control resource set is used to associate one TCI-state; Wherein, the K is greater than or equal to 1. The communication device according to any one of claims 25-27, wherein the time domain resource information of the physical downlink control channel comprises time domain resource information of the i-th physical downlink control channel transmission and/or the i+th Time domain resource information for one physical downlink control channel transmission. The communication device according to claim 28, wherein the first time domain range is determined by a start time domain symbol and an end time domain symbol; or, The first time domain range is determined by a starting time domain symbol and the number of time domain symbols included in the first time domain range; or, The first time domain range is determined by the cut-off time domain symbol and the number of time domain symbols included in the first time domain range; or, The first time domain range is determined by a start time domain symbol, an end time domain symbol, and the number of time domain symbols included in the first time domain range; Wherein, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel, or is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel. The last time domain symbol, or, is the first time domain symbol of the time domain resource transmitted by the i-th physical downlink control channel or the last time domain symbol offset by X time domain symbols, The X is an integer greater than or equal to 1; The cut-off time domain symbol is the corresponding symbol after the first time domain symbol of the time domain resource transmitted by the i+1th physical downlink control channel is shifted forward by Y time domain symbols, where Y is greater than or An integer equal to 1. The communication device according to any one of claims 25-27, wherein the first time domain range is determined by a starting time domain symbol and the number of time domain symbols included in the first time domain range; If the i is equal to 1, the starting time domain symbol is the first time domain symbol of the time domain resource transmitted by the Mth physical downlink control channel or the last time domain symbol is shifted backward by X time domain symbols Corresponding symbol; or, is the first time domain symbol or the fourth time domain symbol of the next time slot of the time slot where the M-th physical downlink control channel transmission is located, and the X is an integer greater than or equal to 1; Wherein, the M-th physical downlink control channel transmission is the last of M repeated transmissions of the physical downlink control channel; or, If the i is greater than 1, the starting time domain symbol is the first time domain symbol or the last time domain symbol of the time domain range corresponding to the i-1th physical downlink shared channel transmission, which is offset backward by X For the corresponding symbol after the time domain symbol, the X is an integer greater than or equal to 1. A communication device, comprising: a processor, when the processor calls a computer program or instruction in the memory, the method according to claims 1 to 9 or any one of claims 10 to 15 is carried out. A communication device, characterized by comprising: a memory and a processor; the memory is used to store computer programs or instructions, and when the processor calls the computer programs or instructions in the memory, the communication device executes The method of claims 1 to 9 or any one of claims 10 to 15. A computer-readable storage medium, wherein the computer-readable storage medium includes a computer program or instruction, and when the computer program or instruction runs on a computer, the computer executes claims 1 to 9 or claims The method of any one of 10 to 15 is required. A communication device, characterized in that it comprises a processor, a memory and a transceiver; The transceiver is used to receive signals or send signals; The memory is used to store program code; The processor is configured to call the program code from the memory to execute the method according to claims 1 to 9 or any one of claims 10 to 15. A computer program product, characterized in that the computer program product includes a computer program or instruction, when the computer program or instruction is run on a computer, the computer executes claims 1 to 9 or claims 10 to 15 Any of the methods.

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