CN112398615A

CN112398615A - TCI state determination method, channel transmission method, terminal equipment and network equipment

Info

Publication number: CN112398615A
Application number: CN201910755417.1A
Authority: CN
Inventors: 王明哲; 杭海存; 纪刘榴; 施弘哲; 毕晓艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2021-02-23
Anticipated expiration: 2039-08-15
Also published as: WO2021027946A1; CN112398615B

Abstract

The application discloses a transmission configuration indication state determining method, a channel transmission method, a terminal and network equipment. In the method for determining the transmission configuration indication state, for K time units corresponding to K times of repeated transmission, according to TCI information, TCI states associated with the same physical shared channel transmitted on at least two time units are determined to be different. In the channel transmission method, the same physical shared channel is transmitted by different network equipment on at least two time units, and different TCI states are associated. The problem that the receiving performance of the physical shared channel transmitted by the network equipment with the transmission power difference is poor when one network equipment in a plurality of network equipment has the transmission power difference can be avoided. The same physical shared channel is transmitted by a plurality of network devices and is associated with a plurality of TCI states, so that the transmission robustness can be improved.

Description

TCI state determination method, channel transmission method, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a TCI status determining method, a channel transmission method, a terminal device, and a network device.

Background

With the development of communication technology, some service scenarios put higher demands on the reliability of communication. In order to improve the reliability of transmission, the diversity gain of the channel in at least one dimension of time domain, frequency domain, space domain, etc. can be utilized, so that the communication process can utilize the independent channels to reduce the influence of channel fading.

For example, a plurality of base stations perform cooperative transmission, and may use spatial multiplexing or frequency domain multiplexing in combination with a time domain diversity repeat transmission scheme to achieve the purpose of improving transmission reliability. In addition, in the convergence scheme, the base station needs to indicate, to the terminal, a Transmission Configuration Indication (TCI) status of a channel between each base station and the terminal, so that the terminal can obtain a signal associated with a channel large-scale parameter of each physical shared channel, and can decode data transmitted by the physical shared channel.

Therefore, how to further improve the robustness of transmission for the above-mentioned repetitive transmission scheme is an urgent problem to be solved.

Disclosure of Invention

The application provides a TCI state determination method, a channel transmission method and system, a terminal device and a network device, which can effectively improve the robustness of transmission.

In a first aspect, the present application discloses a method for determining a transmission configuration indication status. For K time units corresponding to the K times of repeated transmission, the TCI states associated with the same physical shared channel determined by the transmission configuration indication state determination method on at least two time units are different. That is, the terminal may receive the same physical shared channel transmitted by different network devices corresponding to different TCI states. The problem that the same physical shared channel can only be transmitted by the same network equipment, and when the transmission power of the network equipment is poor, the receiving performance of the physical shared channel is poor is solved. Therefore, the robustness of transmission can be improved.

In one embodiment, the transmission configuration indication state determination method includes: the terminal receives Transmission Configuration Indication (TCI) information; and determining the TCI state associated with the first physical shared channel and the TCI state associated with the second physical shared channel in the first time unit according to the TCI information. The first time unit is a time unit in K time units corresponding to K times of repeated transmission. The first physical shared channel and the second physical shared channel are transmitted in parallel on any one time unit. And TCI states associated with the same physical shared channel are different in at least two time units in the K time units. And K is an integer greater than or equal to 2.

In the embodiment of the present application, each physical shared channel may be associated with different physical layer parameters. In one embodiment, the physical layer parameters include: one or more of a data transport layer (layer), an antenna port (antenna port), a Code Division Multiplexing (CDM) group, and a frequency domain resource. Therefore, the association relationship between the physical shared channel and the TCI state described in the embodiment of the present application may also be an association relationship between each physical layer parameter of the physical shared channel and the TCI state.

The antenna port may be a port for transmitting a physical shared channel, and may be referred to as a demodulation reference signal (DMRS) port. The Frequency domain resource is a Frequency domain resource indicated by downlink control information of the scheduled physical shared channel, and the Frequency domain resource may be a Resource Block (RB), a Resource Element (RE), a Resource Block Group (RBG), or a Frequency domain resource indicated by a Frequency domain resource allocation (FD-RA) field in the downlink control information of the scheduled physical shared channel.

In an embodiment, the different TCI states associated with the same physical shared channel in the at least two time units may be: and in at least two time units, the incidence relation of each physical shared channel can meet a preset change rule. The preset variation rule may be a loop rule.

It is assumed that the at least two time units include a first time unit and a second time unit. Assuming that the association relationship between the first physical shared channel and the second physical shared channel in the second time unit is: the first physical shared channel is associated with a first TCI state and the second physical shared channel is associated with a second TCI state. Then, based on the round robin rule, the association relationship between the first physical shared channel and the second physical shared channel in the first time unit may be: and the first TCI state associated with the first physical shared channel and the second TCI state associated with the second physical shared channel on the second time unit are obtained by overturning. Namely, the first physical shared channel is associated with the second TCI status, and the second physical shared channel is associated with the first TCI status in the first time unit.

In one embodiment, the TCI information is used to indicate a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel in a second time unit of the K time units. Furthermore, the terminal may determine the TCI state associated with each physical shared channel in other time units based on the preset change rule and the association relationship between each physical shared channel in the second time unit.

The TCI information may be carried by a TCI field in the DCI. The TCI field may include an index value that may correspond to a plurality of TCI states at a second time unit in a TCI state table. The association between the plurality of TCI states and the plurality of physical shared channels over the second time unit may be determined based on a correspondence between index numbers or identifications.

Further, based on the above cycle rule, determining the TCI states respectively associated with the physical shared channels in other time units may specifically be: and circularly shifting the plurality of TCI states corresponding to the index value to obtain the TCI states respectively associated with the physical shared channels on other time units.

The cyclic shift may be flipped or interchanged for the two physical shared channels. The terminal determines the TCI state associated with the first physical shared channel and the TCI state associated with the second physical shared channel in the first time unit according to the TCI information, and the method comprises the following steps: and the terminal interchanges the first TCI state associated with the first physical shared channel and the second TCI state associated with the second physical shared channel in a second time unit to obtain the second TCI state associated with the first physical shared channel and the first TCI state associated with the second physical shared channel in the first time unit. As can be seen, this embodiment can reduce the signaling overhead required to indicate the TCI status associated with each physical shared channel per time unit.

In another embodiment, the TCI information is used to indicate the TCI status respectively associated with the first physical shared channel and the second physical shared channel in each of the K time units.

Wherein the TCI information can be carried by a TCI field in the DCI. The TCI field may include an index value that may correspond to a plurality of TCI states for each of the K time units in a TCI state table. In this way, the terminal can directly read the TCI state associated with each physical shared channel in each time unit from the TCI table, thereby reducing the processing load of the terminal.

Optionally, in this embodiment, the association relationship between each physical shared channel in the first time unit and each physical shared channel in the second time unit in the K time units satisfies the preset variation rule.

In one embodiment, the first time unit may be a time unit adjacent to the second time unit. In the K time units, the TCI state associated with each physical shared channel in each time unit may be started from the second time unit, and the TCI states associated with each physical shared channel in sequentially adjacent time units all satisfy the preset variation rule. For example, the time units sequentially adjacent to the second time unit are the first time unit and the third time unit, and the TCI state associated with each physical shared channel in the first time unit is obtained by performing cyclic shift on the TCI state associated with each physical shared channel in the second time unit; the TCI status associated with each physical shared channel in the third time unit is obtained by performing cyclic shift on the TCI status associated with each physical shared channel in the first time unit. And the second time unit is the time unit with the most advanced time domain in the K time units.

Wherein the above-mentioned neighbors may be absolute neighbors. For example, the timing offset between the first time unit and the second time unit is 1. The above-mentioned neighbors may also be relatively neighbors. For example, although the timing offset between the first time unit and the second time unit is greater than 1, none of the time units between the first time unit and the second time unit is a time unit with repeated transmission, and in the embodiment of the present application, the first time unit and the second time unit may also be referred to as adjacent time units.

In another embodiment, the first time unit may be an even number of the K time units, and the second time unit may be an odd number of the K time units. Thus, the TCI states associated with the physical shared channels in all odd time units in the K time units are the same; the TCI states associated with the physical shared channels are different for all even-numbered time units.

For the case of two physical shared channels, the TCI status associated with each physical shared channel in all even-numbered time units may be: the first TCI status associated with the first physical shared channel and the second TCI status associated with the second physical shared channel in the second time unit are interchanged or reversed according to the above-mentioned round robin rule. That is, the TCI status associated with each physical shared channel in all even-numbered time units is: the second TCI state associated with the first physical shared channel is associated with the first TCI state associated with the second physical shared channel.

In yet another embodiment, the K time units may be divided into at least two time unit groups, and the specific division rule may be determined by a protocol predefined or RRC configured manner. The at least two time cell groups include a first time cell group including one or more first time cells and a second time cell group including one or more second time cells. Thus, the TCI state associated with the physical shared channel in each time unit in the first time unit group may be the TCI state after the TCI state associated with each physical shared channel in the second time unit is inverted or interchanged.

In this embodiment of the present application, an association relationship between each physical layer parameter of the physical shared channel and the TCI state, taking association of the first physical shared channel and the first TCI state in the second time unit as an example, may be: the first data transmission layer is associated with a first TCI state, the first antenna port is associated with the first TCI state, the first code division multiplexing group is associated with the first TCI state, or the first frequency domain resource is associated with the first TCI state. The first data transmission layer, the first antenna port, the first code division multiplexing group and the first frequency domain resource are all physical layer parameters related to the first physical shared channel.

Accordingly, the second physical shared channel associated with the second TCI state for the second time unit may be: the second data transmission layer is associated with a second TCI state, the second antenna port is associated with the second TCI state, the second code division multiplexing group is associated with the second TCI state, or the second frequency domain resource is associated with the second TCI state. The second data transmission layer, the second antenna port, the second code division multiplexing group and the second frequency domain resource are physical layer parameters associated with the second physical shared channel.

In the embodiments disclosed in the present application, the association relationship between the physical shared channel and the TCI state may be extended to the association relationship between the physical layer parameter and the TCI state described above. The association relationship between the physical shared channel and the TCI state in each time unit can also be extended to the association relationship between the physical layer parameter and the TCI state.

In summary, the terminal may determine the TCI status associated with each physical shared channel in each time unit based on the various optional embodiments, and perform channel estimation on the associated physical shared channel based on the TCI status to receive the associated physical shared channel. Because the TCI state associated with each physical shared channel satisfies the preset variation rule, there may be a plurality of channel estimation results corresponding to each physical shared channel, thereby facilitating implementation of robustness of transmission of each physical shared channel.

In a second aspect, the present application provides a channel transmission method. In the channel transmission method, a first network device transmits a first physical shared channel and a second physical shared channel on at least two time units; the first network equipment sends Transmission Configuration Indication (TCI) information; the TCI information is used for indicating the TCI state of the first physical shared channel and the second physical shared channel which are transmitted on the time unit; the first physical shared channel and the second physical shared channel are multiplexed on the same time unit and are respectively associated with different TCI states; the first physical shared channel and the second physical shared channel are associated with the same TCI status over at least two different time units.

In an embodiment, the association relationship between each physical shared channel and the TCI status in the at least two time units may also satisfy the preset variation rule described in the first aspect. The first network device may transmit the first physical shared channel or the second physical shared channel with a preset variation rule in each time unit.

Therefore, in the channel transmission method, the first network device transmits different physical shared channels on at least two time units respectively, so that the problem that the receiving performance of the transmitted physical shared channels is poor when the first network device has a transmission power difference due to the fact that the first network device only transmits the same physical shared channel on each time unit is solved.

In one embodiment, the TCI information is used to indicate a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel in a second time unit of the at least two time units. In particular, reference may be made to the relevant matters mentioned in the first aspect.

In one embodiment, the TCI information is used to indicate the TCI status respectively associated with the first physical shared channel and the second physical shared channel in each of the at least two time units. In particular, reference may be made to the relevant matters mentioned in the first aspect.

In an embodiment, the TCI statuses respectively associated with the first physical shared channel and the second physical shared channel in the first time unit are obtained by interchanging the TCI statuses respectively associated with the first physical shared channel and the second physical shared channel in the second time unit based on an interchange rule. The interchange rules are predefined by a protocol or configured by radio resource control, RRC.

In one embodiment, the first time unit is a time unit adjacent to the second time unit in the at least two time units. In another embodiment, the first time unit is an even number of the at least two time units, and the second time unit is an odd number of the at least two time units. In yet another embodiment, the at least two time cells may be divided into at least a first time cell group and a second time cell group, the first time cell group including one or more first time cells; the second group of time cells includes one or more second time cells. In particular, reference is made to the statements related to the first aspect.

In one embodiment, the first physical shared channel and the second physical shared channel are respectively associated with different physical layer parameters; the physical layer parameters include: one or more of a data transport layer (layer), an antenna port (antenna port), a Code Division Multiplexing (CDM) group, and a frequency domain resource. In particular, reference is made to the statements related to the first aspect.

In a third aspect, the present application further provides a channel transmission system, including: the device comprises a first network device, a second network device and a terminal. The first network equipment is used for sending Transmission Configuration Indication (TCI) information; transmitting a first physical shared channel to the terminal on a first time unit; and transmitting the second physical shared channel to the terminal in a second time unit; the second network device is configured to send a second physical shared channel to the terminal in a first time unit; and transmitting the first physical shared channel to the terminal in a second time unit; the first time unit and the second time unit are two time units in K time units occupied by K times of repeated transmission; k is an integer greater than or equal to 2; on the same time unit, the first physical shared channel and the second physical shared channel are respectively associated with different TCI states; the first physical shared channel on the first time unit and the second physical shared channel on the second time unit are respectively associated with the same TCI state; the second physical shared channel on the first time unit and the first physical shared channel on the second time unit are respectively associated with the same TCI state.

It can be seen that, the first network device and the second network device alternately transmit each physical shared channel in the first time unit and the second time unit, and correspondingly, the terminal can receive the same physical shared channel transmitted by different network devices. Therefore, the problem of low robustness caused by the fact that the same physical shared channel is only transmitted by one network device is solved.

In one embodiment, the terminal is configured to receive the TCI information; according to the TCI information, determining TCI states respectively associated with the first physical shared channel and the second physical shared channel in the first time unit and TCI states respectively associated with the first physical shared channel and the second physical shared channel in the second time unit; the terminal is further configured to receive, according to TCI states respectively associated with the first physical shared channel and the second physical shared channel in the first time unit, the first physical shared channel sent by the first network device and the second physical shared channel sent by the second network device in the first time unit; the terminal is further configured to receive, according to TCI states respectively associated with the first physical shared channel and the second physical shared channel in the second time unit, the second physical shared channel sent by the first network device and the first physical shared channel sent by the second network device in the second time unit; and the TCI states associated with the same physical shared channel are different in the first time unit and the second time unit. It can be seen that the terminal may adopt different TCI states to receive the same physical shared channel for the first time unit and the second time unit. That is, the same physical shared channel received by the terminal may come from different network devices, and the same physical shared channel is associated with different TCI states.

In one embodiment, the TCI information is used to indicate a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel for a second time unit; in a first time unit, the TCI states respectively associated with the first physical shared channel and the second physical shared channel are obtained by interchanging the TCI states respectively associated with the first physical shared channel and the second physical shared channel in the second time unit based on an interchange rule; the first time unit is a time unit adjacent to the second time unit. The interchange rules are predefined by a protocol or configured by radio resource control, RRC.

In an embodiment, the terminal is specifically configured to read, from the TCI information, a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel in the second time unit; and interchanging the first TCI status associated with the first physical shared channel and the second TCI status associated with the second physical shared channel in the second time unit to obtain the second TCI status associated with the first physical shared channel and the first TCI status associated with the second physical shared channel in the first time unit.

In this embodiment, how to determine the TCI status associated with each physical shared channel in each time unit can be referred to the relevant contents described in the first aspect.

In one embodiment, the TCI information is used to indicate the TCI status respectively associated with the first physical shared channel and the second physical shared channel in each of the K time units. In particular, reference is made to the statements related to the first aspect.

In one embodiment, the first physical shared channel and the second physical shared channel are respectively associated with different physical layer parameters; the physical layer parameters include: one or more of a data transport layer, an antenna port, a Code Division Multiplexing (CDM) group, and frequency domain resources. In particular, reference is made to the statements related to the first aspect.

In a fourth aspect, the present application further provides a method for determining a transmission configuration indication state. The transmission configuration indication state determination method differs from the transmission configuration indication state determination method described in the first aspect in that the terminal interprets the TCI information transmitted by the network device in a different manner. In the method for determining the transmission configuration indication state according to the first aspect, the terminal first decodes the TCI information corresponding to the index number of the time domain or the index number of the time unit, and then decodes the TCI state associated with the index number of the space domain resource or the frequency domain resource. In the method for determining the transmission configuration indication state, the terminal first decodes the TCI information corresponding to the index of the frequency domain resource or the time domain resource, and then decodes the TCI state associated with the index of the time domain resource or the time unit.

In this aspect, the transmission configuration indication state determining method includes: the terminal receives the Transmission Configuration Indication (TCI) information, and determines the TCI state associated with the first physical shared channel in the first time unit and the TCI state associated with the first physical shared channel in the second time unit according to the TCI information. The first time unit is a time unit in K time units corresponding to K times of repeated transmission. The first physical shared channel is associated with a TCI state that is different over the first time unit than its TCI state associated over the second time unit.

In one embodiment, the TCI information is used to indicate a first TCI status associated with the second physical shared channel over a first time unit and a second TCI status associated over a second time unit. Thus, the terminal determines, according to the TCI information, a TCI status associated with the first physical shared channel over the first time unit and a TCI status associated with the first physical shared channel over the second time unit, including: the terminal interchanges a first TCI state associated with the second physical shared channel on the first time unit with a second TCI state associated with the second physical shared channel on the second time unit, and obtains a second TCI state associated with the first physical shared channel on the first time unit and a first TCI state associated with the first physical shared channel on the second time unit.

Stated another way, the TCI information indicates the corresponding TCI information of the second physical shared channel during one complete transmission. Then, the TCI information corresponding to the first physical shared channel during one complete transmission process may be obtained by performing cyclic shift on the TCI information corresponding to the second physical shared channel.

In another embodiment, the TCI information is used to indicate the TCI status associated with each physical shared channel for each time unit. Therefore, the terminal can directly read the TCI information corresponding to each physical shared channel from the TCI information by adopting the first frequency domain or space domain resources; and then, the TCI state of each physical shared channel associated on each time unit is decoded according to the time domain resources.

Similar matters in this aspect to those in the first aspect can be found in the related matters in the first aspect, and are not described in detail here.

In a fifth aspect, the present application further provides a terminal, where the terminal has some or all of the functions of the terminal in the method examples described in the first to fourth aspects, for example, the functions of the terminal may have the functions in some or all of the embodiments in the present application, or may have the functions of implementing any of the embodiments in the present application separately. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the terminal may include a processing unit and a communication unit in the structure, and the processing unit is configured to support the terminal to execute the corresponding functions in the method. The communication unit is used for supporting communication between the terminal and other equipment. The terminal may further comprise a storage unit for coupling with the processing unit and the transmitting unit, which stores program instructions and data necessary for the terminal.

In one embodiment, the terminal includes:

a communication unit for receiving Transmission Configuration Indication (TCI) information;

the processing unit is used for determining the TCI state associated with the first physical shared channel and the TCI state associated with the second physical shared channel in the first time unit according to the TCI information;

the first time unit is a time unit in K time units corresponding to K times of repeated transmission; k is an integer greater than or equal to 2; the first physical shared channel and the second physical shared channel are transmitted in parallel on any time unit;

and TCI states associated with the same physical shared channel are different in at least two time units in the K time units.

In another embodiment, the terminal includes:

and the processing unit is used for determining the TCI state associated with the first physical shared channel on the first time unit and the TCI state associated with the first physical shared channel on the second time unit according to the TCI information. The first time unit is a time unit in K time units corresponding to K times of repeated transmission. The first physical shared channel is associated with a TCI state that is different over the first time unit than its TCI state associated over the second time unit.

As an example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.

In one embodiment, the terminal includes:

a transceiver for receiving Transmission Configuration Indication (TCI) information;

the processor is used for determining the TCI state associated with the first physical shared channel and the TCI state associated with the second physical shared channel in the first time unit according to the TCI information;

In another embodiment, the terminal includes:

a processor configured to determine a TCI status associated with the first physical shared channel over the first time unit and a TCI status associated over the second time unit based on the TCI information. The first time unit is a time unit in K time units corresponding to K times of repeated transmission. The first physical shared channel is associated with a TCI state that is different over the first time unit than its TCI state associated over the second time unit.

In a sixth aspect, the present application further provides a network device. The network device has a function of implementing part or all of the function of the first network device in the above-mentioned method example of the second aspect, and part or all of the function of the first network device or the second network device in the method embodiment of the third aspect. For example, the function of the network device may be the function in some or all of the embodiments of the network device in the present application, or may be the function of implementing any of the embodiments of the present application alone. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the network device may include a processing unit and a communication unit configured to support the network device to perform the corresponding functions of the above method. The communication unit is used for supporting communication between the network equipment and other equipment. The network device may further comprise a storage unit for coupling with the retrieving unit and the sending unit, which stores program instructions and data necessary for the network device.

In one embodiment, the network device includes:

a processing unit for determining transmission configuration indication, TCI, information; the TCI information is used for indicating the TCI state of the first physical shared channel and the second physical shared channel which are transmitted on the time unit;

a communication unit for transmitting a first physical shared channel and a second physical shared channel over at least two time units; and sending Transmission Configuration Indication (TCI) information;

the first physical shared channel and the second physical shared channel are multiplexed on the same time unit and are respectively associated with different TCI states; the first physical shared channel and the second physical shared channel are associated with the same TCI status over at least two different time units.

Wherein the processing unit is further configured to determine to transmit the first physical shared channel and the second physical shared channel over at least two time units.

As an example, the communication unit may be a transceiver.

In one embodiment, the network device includes:

a processor configured to determine Transmission Configuration Indication (TCI) information; the TCI information is used for indicating the TCI state of the first physical shared channel and the second physical shared channel which are transmitted on the time unit;

a transceiver for transmitting a first physical shared channel and a second physical shared channel over at least two time units; and sending Transmission Configuration Indication (TCI) information; the first physical shared channel and the second physical shared channel are multiplexed on the same time unit and are respectively associated with different TCI states; the first physical shared channel and the second physical shared channel are associated with the same TCI status over at least two different time units wherein the processor is further configured to determine to transmit the first physical shared channel and the second physical shared channel over at least two time units.

In particular implementations, the processor may be configured to perform, for example and without limitation, baseband related processing, and the transceiver may be configured to perform, for example and without limitation, radio frequency transceiving. The above devices may be respectively disposed on separate chips, or at least a part or all of the devices may be disposed on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor. The analog baseband processor and the transceiver can be integrated on the same chip, and the digital baseband processor can be arranged on a separate chip. With the development of integrated circuit technology, more and more devices can be integrated on the same chip, for example, a digital baseband processor can be integrated on the same chip with various application processors (such as, but not limited to, a graphics processor, a multimedia processor, etc.). Such a Chip may be referred to as a System on Chip. Whether each device is separately located on a different chip or integrated on one or more chips often depends on the specific needs of the product design. The embodiment of the present invention does not limit the specific implementation form of the above device.

In a seventh aspect, the present application further provides a processor for executing the above methods. In the course of performing these methods, the processes of the above-mentioned methods relating to the transmission of the above-mentioned information and the reception of the above-mentioned information may be understood as a process of outputting the above-mentioned information by a processor, and a process of receiving the above-mentioned information by a processor. Specifically, upon outputting the information, the processor outputs the information to the transceiver for transmission by the transceiver. Further, the information may need to be processed after being output by the processor before reaching the transceiver. Similarly, when the processor receives the input information, the transceiver receives the information and inputs the information into the processor. Further, after the transceiver receives the information, the information may need to be processed before being input to the processor.

Based on the above principle, for example, the receiving of the TCI information mentioned in the foregoing method may be understood as the processor inputting the TCI information. As another example, sending TCI information may be understood as the processor outputting TCI information.

As such, the operations relating to the transmission, and reception by the processor may be more generally understood as operations relating to processor output and reception, input, and the like, rather than operations relating directly to transmission, and reception by the rf circuitry and antenna, unless specifically stated otherwise, or otherwise not contradicted by their actual role or inherent logic in the associated description.

In particular implementations, the processor may be a processor dedicated to performing the methods, or may be a processor executing computer instructions in a memory to perform the methods, such as a general purpose processor. The Memory may be a non-transitory (non-transitory) Memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor or may be separately disposed on different chips.

In an eighth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the terminal, which includes a program for executing the method according to the first aspect or the fourth aspect.

In a ninth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the network device, which includes a program for executing the method according to the second aspect.

In a tenth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first or fourth aspect.

In an eleventh aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the second aspect described above.

In a twelfth aspect, the present application provides a chip system, which includes a processor and an interface, for enabling a terminal to implement the functions referred to in the first aspect or the fourth aspect, for example, to determine or process at least one of data and information referred to in the above method. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the network device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In a thirteenth aspect, the present application provides a chip system, which includes a processor and an interface, for enabling a network device to implement the functions referred to in the second aspect, for example, to determine or process at least one of data and information referred to in the above method. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the network device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

Drawings

FIG. 1 is an exemplary diagram of a V2X system according to an embodiment of the present application;

fig. 2 is an exemplary diagram of a wireless communication system to which embodiments of the present application relate;

fig. 3 is a diagram illustrating an example of a process flow of an SDM-based physical layer according to an embodiment of the present application;

fig. 4 is a diagram illustrating an exemplary process flow of an FDM-based physical layer according to an embodiment of the present application;

fig. 5 is an exemplary diagram of a multi-station repeat transmission scenario according to an embodiment of the present application;

fig. 6 is another exemplary diagram of a multi-station repeat transmission scenario according to an embodiment of the present application;

fig. 7 is an exemplary diagram of a scenario of two-station repeated transmission provided in an embodiment of the present application;

FIG. 8 is a diagram of an example of TCI states associated with the physical shared channel corresponding to FIG. 7 provided by an embodiment of the present application;

fig. 9 is a diagram of a variation example of two physical shared channels according to a round robin rule provided by an embodiment of the present application;

fig. 10 is an exemplary diagram of a four-station repeat transmission scenario provided by an embodiment of the present application;

FIG. 11 is a diagram of an example of TCI states associated with the physical shared channel corresponding to FIG. 10 provided by an embodiment of the present application;

fig. 12 is a diagram of an example of a TRP transmission PDSCH corresponding to fig. 10 according to an embodiment of the present application;

fig. 13 is another example diagram of a TCI state associated with the PDSCH corresponding to fig. 10 provided by an embodiment of the present application;

fig. 14 is a diagram of a variation example of four physical shared channels according to a round robin rule provided by an embodiment of the present application;

fig. 15 is another exemplary diagram of a two-station repeat transmission scenario provided by an embodiment of the present application;

FIG. 16 is a diagram of an example of TCI states associated with the physical shared channel corresponding to FIG. 15 provided by an embodiment of the present application;

fig. 17 is a flowchart illustrating a channel transmission method according to an embodiment of the present application;

FIG. 18 is a schematic diagram of an apparatus according to an embodiment of the present disclosure;

fig. 19 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 20 is a schematic structural diagram of another apparatus provided in the embodiments of the present application.

Detailed Description

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

The technical scheme of the application can be particularly applied to various communication systems. For example, with the continuous development of communication technology, the technical solution of the present application can also be used in future networks, such as a 5G system, which can also be referred to as a New Radio (NR) system; or may also be used for device-to-device (D2D) systems, machine-to-machine (M2M) systems, and so forth.

The technical scheme of the application can also be applied to a vehicle networking (V2X) technology (X stands for anything), and the communication modes in the V2X system are collectively referred to as V2X communication. The V2X communication is a basic technology and a key technology applied in a scene with a very high requirement on communication delay in the future, such as intelligent automobiles, automatic driving, intelligent transportation systems, and the like, for high-speed devices represented by vehicles. For example, the V2X communication includes: communication between a vehicle and a vehicle (V2V), communication between a vehicle and a roadside infrastructure (V2I), communication between a vehicle and a pedestrian (V2P), or communication between a vehicle and a network (V2N), and the like. Communication between terminal devices involved in the V2X system is widely referred to as Sidelink (SL) communication. That is, the terminal described herein may also be a vehicle or a vehicle component applied in a vehicle.

Fig. 1 is a schematic diagram of a V2X system according to an embodiment of the present application. The schematic includes V2V communication, V2P communication, and V2I/N communication.

As shown in fig. 1, the vehicles or vehicle components communicate with each other via V2V. The vehicle or the vehicle component can broadcast the information of the speed, the driving direction, the specific position, whether the emergency brake is stepped on and the like of the vehicle or the vehicle component to surrounding vehicles, and drivers of the surrounding vehicles can better sense the traffic condition outside the sight distance by acquiring the information, so that the dangerous condition is pre-judged in advance and avoided; the vehicle or vehicle component communicates with a roadside infrastructure, which may provide access to various service information and data networks for the vehicle or vehicle component, via V2I. The functions of non-stop charging, in-car entertainment and the like greatly improve the traffic intelligence. Roadside infrastructure, for example, roadside units (RSUs) include two types: one is a terminal equipment type RSU. Since the RSU is distributed on the roadside, the RSU of the terminal equipment type is in a non-mobile state, and the mobility does not need to be considered; the other is a RSU of network device type. The RSU of this network device type may provide timing synchronization and resource scheduling to the vehicle or vehicle component in communication with the network device. The vehicle or vehicle component communicates with the person via V2P; the vehicle or vehicle component communicates with the network via V2N. The network architecture and the service scenario described in the embodiments disclosed in the present application are for more clearly illustrating the technical solutions of the embodiments disclosed in the present application, and do not constitute a limitation to the technical solutions provided in the embodiments disclosed in the present application, and as a person having ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solutions provided in the embodiments disclosed in the present application are also applicable to similar technical problems.

The network device related to the embodiments disclosed in the present application includes a Base Station (BS), which may be a device deployed in a radio access network and capable of performing wireless communication with a terminal. The base station may have various forms, such as a macro base station, a micro base station, a relay station, an access point, and the like. For example, the base station related to the embodiments disclosed in the present application may be a base station in 5G or a base station in LTE, where the base station in 5G may also be referred to as a Transmission Reception Point (TRP).

In some deployments, the network devices may include Centralized Units (CUs), Distributed Units (DUs), and so on. The network device may also include a Radio Unit (RU). The CU implements part of functions of the base station, and the DU implements part of functions of the network device, for example, the CU implements functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer, and the DU implements functions of a Radio Link Control (RLC), a Media Access Control (MAC) layer and a Physical (PHY) layer. Since the information of the RRC layer eventually becomes or is converted from the information of the physical layer, the higher layer signaling, such as RRC layer signaling or PHCP layer signaling, can also be considered as being transmitted by the DU or the DU + RU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in an access network RAN, or may be divided into network devices in a Core Network (CN), which is not limited herein.

In the embodiments disclosed in the present application, the apparatus for implementing the function of the network device may be a network device; or may be a device, such as a system-on-chip, capable of supporting the network device to implement the function, and the device may be installed in the network device.

In the technical solutions provided by the embodiments disclosed in the present application, the device for implementing the function of the network device is a network device, and the network device is a base station, which is taken as an example, the technical solutions provided by the embodiments disclosed in the present application are described.

A terminal may also be referred to herein as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a wireless terminal in the aforementioned V2X car networking, or an RSU of a wireless terminal type, and the like.

To facilitate understanding of the embodiments disclosed herein, the following description is made.

(1) Some of the scenarios in the embodiment disclosed in the present application are described by taking a scenario of an NR network in a wireless communication network as an example, it should be noted that the solution in the embodiment disclosed in the present application may also be applied to other wireless communication networks, and corresponding names may also be replaced by names of corresponding functions in other wireless communication networks.

(2) Embodiments disclosed herein will present various aspects, embodiments, or features of the application in the context of a system comprising a plurality of devices, components, modules, etc. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, a combination of these schemes may also be used.

(3) In the embodiments disclosed herein, the term "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.

(4) In the embodiments disclosed in the present application, "of", "corresponding" and "corresponding" may be sometimes used in a mixed manner, and it should be noted that the intended meaning is consistent when the difference is not emphasized.

(5) In the embodiments disclosed in the present application, at least one may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present application. In the embodiments disclosed in the present application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", etc., and the technical features described in the "first", "second", "third", "a", "B", "C", and "D" are not in the order of priority or magnitude.

For the convenience of understanding the embodiments disclosed in the present application, the following partial embodiments take fig. 2 as an example to describe the channel transmission method according to the embodiments disclosed in the present application. Referring to fig. 2, fig. 2 is a schematic diagram of a wireless communication system according to an embodiment of the disclosure, and as shown in fig. 2, the wireless communication system may include: a plurality of network devices (e.g., TRPs), one or more terminals. Wherein: the network device may be arranged to communicate with the terminal over the wireless interface under the control of a network device controller (not shown). In some embodiments, the network device controller may be part of a core network or may be integrated into a network device. In particular, the network device may be configured to transmit control information or user data to the core network via a backhaul interface. Specifically, as shown in fig. 2, the TRP1 and the TRP2 may communicate with each other directly or indirectly through a backhaul interface. In addition, multiple network devices may schedule the same terminal, i.e., a multi-station cooperative transmission scenario.

A brief description of the multi-station repeat transmission scenario and several terms involved in this application will first be provided.

1. Multi-station repeat transmission scenario

In order to ensure that data transmission has the characteristics of low time delay and high reliability, the same transmission block can be repeatedly transmitted on a plurality of time units. Wherein, the frequency domain resources occupied by the repeated transmission of the transmission block on each time unit are the same. The terminal may jointly decode the transport blocks repeatedly transmitted in the multiple time units to feed back hybrid automatic repeat request-acknowledgement (HARQ-ACK) information.

In the embodiment disclosed in the present application, in a multi-station repeated transmission scenario, a transmission block is not only repeatedly transmitted in a time domain, but also transmitted in each time unit by Spatial Domain Multiplexing (SDM) or Frequency Domain Multiplexing (FDM). Therefore, the multi-station repetitive transmission scenario mainly includes two scenarios, one is an SDM combined with Time Domain Multiplexing (TDM), which is abbreviated as an SDM + TDM scenario; the other is FDM combined TDM, which is called FDM + TDM scene for short.

Fig. 3 and 4 illustrate the FDM and SDM separately by taking the physical layer processing flow as an example. For the convenience of understanding the contents of fig. 3 and 4, the physical layer processing flow will be briefly described below.

Data sent by a Media Access Control (MAC) layer to a physical layer is organized in the form of Transport Blocks (TBs). The MAC layer is a TB to the physical layer. The network equipment performs channel coding processing on each TB, and performs rate matching on the transport blocks after the channel coding processing and stores the transport blocks into a ring buffer. The Codeword (CW) obtained from the circular buffer based on the redundancy version can be regarded as a TB with error protection. After Layer mapping, the codeword is mapped to one or more data transmission layers (Layer for short), and each data transmission Layer corresponds to an effective data stream. The data stream of each layer is mapped to an antenna port (antenna port) through an antenna port map. The process of antenna port mapping may also be referred to as precoding, i.e., a process of mapping data streams of each layer to antenna ports by a precoding matrix. The pre-coded data stream is mapped to physical time-frequency resources, converted into signals and sent out by network equipment.

With reference to fig. 2 and 3, a physical layer processing flow of realizing parallel transmission by using SDM for TRP1 and TRP2 is described. As shown in fig. 3, TRP1 and TRP2 perform channel coding and rate matching processing for the same transport block. To implement SDM, the codewords are Layer mapped to Layer0 and Layer1, respectively. Mapping the data stream of the data transmission Layer0 to an antenna port0 through antenna port mapping; the data stream of the data transport Layer1 is mapped to antenna port2 by antenna port mapping. Further, the data stream of the antenna port0 is subjected to resource mapping to obtain PDSCH 1; the data stream of antenna port2 is subjected to resource mapping, and PDSCH2 is obtained. Further, TRP1 may transmit PDSCH1 and TRP2 may transmit PDSCH 2. One of TRP1 and TRP2 needs to notify the terminal that the TCI status associated with PDSCH1 is: TCI state 1 of the channel between TRP1 and the terminal, and the TCI state associated with PDSCH2 are: TCI state 2 of the channel between TRP2 and the terminal.

In another embodiment, when performing antenna port mapping, the data stream of the data transport Layer0 may be mapped to CDM group 0 by antenna port mapping; and, the data stream of the data transport Layer1 is mapped to CDM group 1 through antenna port mapping.

With reference to fig. 2 and 4, a physical layer processing flow of TRP1 and TRP2 for parallel transmission with FDM is described. As shown in fig. 4, TRP1 and TRP2 perform channel coding and rate matching processing for the same transport block. And performing Layer mapping on the code words obtained by processing, and mapping to Layer 0. The data stream of the data transport Layer0 is mapped to antenna port0 by antenna port mapping. To implement FDM, the data stream of antenna port0 is mapped onto different frequency domain resources through resource mapping. For example, mapping to frequency domain resource 1 and frequency domain resource 2, PDSCH1 and PDSCH2 are obtained, respectively. The physical shared channel transmitted based on frequency domain resource 1 is denoted as PDSCH1, and the physical shared channel transmitted based on frequency domain resource 2 is denoted as PDSCH 2. Further, TRP1 transmits PDSCH1, TRP2 transmits PDSCH 2. One of TRP1 and TRP2 needs to notify the terminal that the TCI status associated with PDSCH1 is: the TCI status of the channel between TRP1 and the terminal, and the PDSCH associated TCI status are: TCI status of the channel between TRP2 and the terminal.

Fig. 5 is an exemplary diagram of a multi-station repeat transmission scenario according to an embodiment of the present application. It is assumed that the transport block is repeatedly transmitted over time slots n to n + 3. And, the repeatedly transmitted transport block obtains PDSCH1 and PDSCH2 on SDM and FDM shown in fig. 3 and 4. As shown in fig. 5, PDSCH1 and PDSCH2 are each repeatedly transmitted on slots n through n + 3.

Fig. 6 is a diagram of another example of a multi-station repeat transmission scenario according to an embodiment of the present application. It is assumed that transport blocks are repeatedly transmitted over the minislots n to n +3, and the repeatedly transmitted transport blocks obtain PDSCH1 and PDSCH2 through SDM, FDM shown in fig. 3 and 4 described above. As shown in fig. 6, PDSCH1 and PDSCH2 are both repeatedly transmitted on minislots n through n + 3.

2. Time unit, one-time transmission and one-time complete transmission process

In the embodiment disclosed in the present application, among K time units corresponding to the K times of repeated transmission, a time unit may be one or more radio frames, one or more subframes, one or more slots, one or more minislots (mini slots), one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols, discrete fourier transform spread spectrum (DFT-S-OFDM) symbols, or the like, or may be a time window formed by multiple frames or subframes, such as a System Information (SI) window.

The number of repeated transmission K of the transport block in the time domain may be configured by RRC; the time domain resource occupied by the transmission block repeatedly transmitted once in the time domain may be indicated by DCI.

In the embodiments disclosed in the present application, a transmission refers to a transmission in the time domain or a repeated transmission in one time unit. Wherein, one time transmission or repeated transmission in one time unit comprises parallel transmission of a plurality of TRPs based on SDM or FDM. As shown in fig. 5 and 6, one transmission includes one parallel transmission of PDSCH1 and PDSCH2 on one slot or minislot.

In the embodiments disclosed in the present application, a complete transmission process includes K repeated transmissions in the time domain. That is, a full transmission process at a time involves the parallel transmission of multiple physical shared channels by multiple network devices over K time units. As shown in fig. 5, 6, one complete transmission process includes four parallel transmissions of TRP1 and TRP1 on slots n through n +3, PDSCH1 and PDSCH 2.

3. Transmission Configuration Indication (TCI)

The TCI status is a field used for indicating quasi co-location (QCL) of a PDSCH antenna port in DCI, and is used for configuring a quasi co-location relationship between one or two downlink reference signals and a DMRS of a PDSCH, which may be understood as a channel characteristic in the PDSCH transmission process. Therefore, the terminal device can obtain the indication information of the large-scale parameter relationship of the received PDSCH channel based on the TCI state, and then demodulate the data transmitted on the PDSCH based on channel estimation. In a multi-station cooperative transmission scenario, for a terminal device, different TRPs have different TCI states (states) during PDSCH transmission.

4. Quasi co-location (QCL)

QCL relationships are used to indicate that multiple resources have one or more identical or similar communication characteristics. For example, if two antenna ports have a quasi co-location relationship, the large scale characteristics of the channel carrying a signal on one port can be inferred from the large scale characteristics of the channel carrying a signal on the other port. The signals corresponding to the antenna ports having the QCL relationship have the same parameters, or the parameters of one antenna port may be used to determine the parameters of another antenna port having the QCL relationship with the antenna port, or two antenna ports have the same parameters, or the parameter difference between the two antenna ports is smaller than a certain threshold. Wherein the parameters may include one or more of the following channel large-scale parameters: delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average delay (average delay), average gain, spatial Rx parameters. The spatial receiving parameter may include one or more of an Angle of arrival (AOA), a main Angle of arrival (Dominant AOA), an Average Angle of arrival (Average AOA), an Angle of Arrival (AOD), a channel correlation matrix, a power Angle spread spectrum of the Angle of arrival, an Average trigger Angle (Average AOD), a power Angle spread spectrum of the Angle of departure, a transmit channel correlation, a receive channel correlation, a transmit beamforming, a receive beamforming, a spatial channel correlation, a spatial filter, or a spatial filtering parameter, or a spatial receiving parameter.

Different TRPs are located in different geographical locations and the TCI status of the channel between each TRP and the terminal is also different. Since in the embodiments disclosed in the present application, one transmission includes parallel transmission of multiple physical shared channels, the network device needs to configure the TCI states of the multiple physical shared channels for the terminal.

For K time units corresponding to K times of repeated transmission, each time unit uses a plurality of physical shared channels obtained by FDM or SDM.

Or, in at least two time units, the plurality of network devices transmit each physical shared channel according to a preset change rule, and each physical shared channel associates each TCI state according to the preset change rule.

Alternatively, a plurality of network devices round-robin transmit each physical shared channel over at least two time units, and each physical shared channel is associated with a plurality of TCI states using a cyclic shift.

The application provides a channel transmission method. In the channel transmission method, the same physical shared channel can be transmitted by at least two network devices, or transmitted by different network devices in at least two time units. That is, one network device in a cooperative transmission may transmit different physical shared channels over at least two time units.

Thus, when a transmission power difference occurs in one network device, due to each physical shared channel, at least two network devices transmit in one complete transmission process. Therefore, the influence degree of the network equipment with the transmission power difference on the receiving performance of the physical shared channel can be reduced, and the probability of incomplete information bits received by the terminal can be reduced.

For example, fig. 7 is a diagram of another example of a multi-station repeat transmission scenario provided in an embodiment of the present application. Compared with fig. 5, TRP1 does not transmit only PDSCH1 on slots n to n +3, and in fig. 7, TRP1 may transmit PDSCH1 and PDSCH2 in turn on slots n to n + 3; accordingly, TRP2 also alternately transmits PDSCH2 and PDSCH1 in parallel with TRP1 on slots n through n + 3.

As shown in fig. 7, assuming that a transmission power difference occurs in TRP1, the PDSCH of TRP1 per transmission will exhibit poor reception performance. In a complete transmission process, two PDSCHs 1 of the four PDSCHs 1 received by the terminal are transmitted by TRP2, and two PDSCHs 2 of the four PDSCHs 2 received by the terminal are transmitted by TRP 2. Therefore, the receiving performance of both PDSCH1 and PDSCH2 is not poor due to the transmission power difference of TRP1, and the terminal can obtain more complete information bits based on PDSCH1 and PDSCH2 with good receiving performance.

However, in the existing related technical solution, the same TRP repeatedly transmits the same PDSCH on multiple time units, and once there is a transmission power difference in the TRP, the reliability of the PDSCH will be rapidly reduced. As shown in fig. 5 and 6, TRP1 repeatedly transmits PDSCH1 in slots n to n +3 or minislots n to n +3, and TRP2 repeatedly transmits PDSCH2 in slots n to n +3 or minislots n to n + 3. Once the TRP1 transmission power is poor, the PDSCH1 reception performance is poor, that is, the PDSCH1 contains information bits with possibility of loss all the time. Therefore, when the terminal merges PDSCH1 and PDSCH2 transmitted repeatedly for multiple times, the valid data carried by PDSCH1 is missing, and the information bits obtained by merging are incomplete.

In summary, in the scenario where multiple TRPs cooperate to perform repeated transmission, the embodiment of the present application may ensure robustness of transmission once a transmission power difference occurs in one of the TRPs.

In order to enable the terminal to receive the physical shared channel transmitted by the network device, the network device needs to notify the terminal of the TCI status of each transmission. Therefore, the application also provides a TCI state determination method. In the TCI state determining method, network equipment can send TCI information to a terminal; the terminal may determine the TCI status associated with each physical shared channel on each transmission or each time unit based on the TCI information.

To improve the robustness of the transmission, the same physical shared channel is transmitted by different TRPs over at least two time units. Thus, the TCI states associated with the same physical shared channel are different for at least two time units. Thus, when the network device transmitting the physical shared channel changes, the TCI state associated with the physical shared channel also changes correspondingly, and the change rhythms of the TCI state and the TCI state are the same. That is, in the embodiment disclosed in the present application, the preset change rule of the network device transmitting the physical shared channel is the same as the preset change rule of the TCI state associated with the physical shared channel.

In one embodiment, the preset variation rule may be a round robin rule over K time units. For the network device side, the cyclic rule is that a physical shared channel sent by one network device is: a network device transmits different physical shared channels in turn over K time units; or the same physical shared channel is transmitted by different network equipment on a plurality of time units in turn; or a plurality of network devices round-robin the transmission of each physical shared channel. For the terminal side, the cyclic rule indicates that the TCI state associated with the physical shared channel obtained by the terminal is: the same physical shared channel is alternately associated with different TCI states in K time units; or the plurality of physical shared channels and the plurality of TCI states adopt cyclic shift association or rotation association. The preset variation rule is explained below with reference to the drawings.

Assuming a repeatedly transmitted transport block, N PDSCHs are obtained based on FDM or SDM, and are transmitted by N network devices in K time units according to the above-mentioned round robin rule, and correspondingly, the N PDSCHs are also associated with N TCI states according to the above-mentioned round robin rule.

For example, suppose that the TCI states corresponding to the channel conditions of TRP { #1, #2, …, # N } are TCI states { #1, #2, …, # N } in this order, and N PDSCHs are PDSCH { #1, #2, …, # N } respectively. On the first time unit, the N PDSCHs are sequentially transmitted by TRP { #1, #2, …, # N }, and the N PDSCHs are sequentially associated with TCI states { #1, #2, …, # N }; on the second time unit, the N PDSCHs are sequentially transmitted by TRP { #2, #3, …, # N, #1} and are sequentially associated with TCI states { #2, #3, …, # N, #1 }; on the third time unit, the N PDSCHs are sequentially transmitted by TRP { #3, #4, …, # N, #1, #2} and are sequentially associated with TCI states { #3, #4, …, # N, #1, #2 }; …, respectively; the N PDSCHs are transmitted by TRP { # K-1, …, # N, #1, #2, …, # K-2} in sequence on the K-1 time unit, and the N PDSCHs are associated with TCI states { # K-1, …, # N, #1, #2, …, # K-2} in sequence; the N PDSCHs are sequentially transmitted by TRP { # K, …, # N, #1, #2, …, # K-1} on the K-th time unit, and the N PDSCHs are sequentially associated with TCI states { # K, …, # N, #1, #2, …, # K-1 }.

For another example, assume that the TCI state corresponding to TRP1 is TCI # 1; the TCI state corresponding to TRP2 is TCI # 2; the two physical shared channels obtained by SDM or FDM are PDSCH1 and PDSCH2, respectively. The four time units corresponding to 4 times of repeated transmission are time slots n to n +3, respectively. Fig. 8 is a diagram of an example of a TCI state associated with the physical shared channel corresponding to fig. 7 according to an embodiment of the present application.

As shown in fig. 7, TRP1 transmits PDSCH1 in slot n and TRP2 transmits PDSCH2 in slot n, and then as shown in fig. 8, PDSCH1 is associated with TCI state #1 and PDSCH2 is associated with TCI state #2 in slot n;

as shown in fig. 7, TRP1 transmits PDSCH2 in slot n +1 and TRP2 transmits PDSCH1 in slot n +1, and then as shown in fig. 8, in slot n +1, PDSCH2 is associated with TCI state #1, and PDSCH1 is associated with TCI state # 2;

as shown in fig. 7, TRP1 transmits PDSCH1 in slot n +2 and TRP2 transmits PDSCH2 in slot n +2, and then as shown in fig. 8, in slot n +2, PDSCH1 is associated with TCI state #1 and PDSCH2 is associated with TCI state # 2;

as shown in fig. 7, TRP1 transmits PDSCH2 in slot n +3 and TRP2 transmits PDSCH1 in slot n +3, and then as shown in fig. 8, in slot n +3, PDSCH2 is associated with TCI state #1 and PDSCH1 is associated with TCI state # 2.

It can be seen that the network device transmitting the physical shared channel changes, and the TCI associated with the physical shared channel also changes accordingly. As shown in fig. 7, TRP1 and TRP2 alternately transmit PDSCH1 and PDSCH2 according to a cyclic rule over slot n to slot n + 3; accordingly, as shown in fig. 8, the PDSCH1 associates TCI state #1 and TCI state #2 alternately in time slot n to time slot n +3 according to a round robin rule.

That is, as shown in fig. 9, the same PDSCH is transmitted by different TRPs and associated with different TCI states according to the round robin rule from slot n to slot n + 3.

In the above examples shown in fig. 7 to 9, the time slot may be replaced with a micro-slot. That is, when four time units corresponding to 4 times of repeated transmission are minislots n to n +3, respectively, there are also patterns of TRP1 and TRP2 for transmitting PDSCH shown in fig. 7, the association relationship between each physical shared channel and TCI state shown in fig. 8, and the round robin rule shown in fig. 9.

For another example, for a scenario in which four TRPs cooperate to perform repeated transmission, assume that the TCI state corresponding to TRP1 is TCI # 1; the TCI state corresponding to TRP2 is TCI # 2; the TCI state corresponding to TRP3 is TCI # 3; the TCI state corresponding to TRP4 is TCI # 4; the four physical shared channels obtained by SDM or FDM are PDSCH1, PDSCH2, PDSCH3, PDSCH4, respectively; the four time units corresponding to 4 times of repeated transmission are time slots n to n +3 respectively;

as shown in fig. 10, TRP1 transmits PDSCH1 in slot n, TRP2 transmits PDSCH2 in slot n, TRP3 transmits PDSCH3 in slot n, TRP4 transmits PDSCH4 in slot n, and as shown in fig. 11, PDSCH1 is associated with TCI state #1, PDSCH2 is associated with TCI state #2, PDSCH3 is associated with TCI state #3, and PDSCH4 is associated with TCI state #4 in slot n;

as shown in fig. 10, TRP1 transmits PDSCH2 in slot n +1, TRP2 transmits PDSCH3 in slot n +1, TRP3 transmits PDSCH4 in slot n +1, TRP4 transmits PDSCH1 in slot n +1, then as shown in fig. 11, in slot n +1, PDSCH1 is associated with TCI state #4, PDSCH2 is associated with TCI state #1, PDSCH3 is associated with TCI state #2, and PDSCH4 is associated with TCI state # 3;

as shown in fig. 10, TRP1 transmits PDSCH3 in slot n +2, TRP2 transmits PDSCH4 in slot n +2, TRP3 transmits PDSCH1 in slot n +2, TRP4 transmits PDSCH2 in slot n +2, then as shown in fig. 11, in slot n +2, PDSCH1 is associated with TCI state #3, PDSCH2 is associated with TCI state #4, PDSCH3 is associated with TCI state #1, and PDSCH4 is associated with TCI state # 2;

as shown in fig. 10, TRP1 transmits PDSCH4 in slot n +3, TRP2 transmits PDSCH1 in slot n +3, TRP3 transmits PDSCH2 in slot n +3, and TRP4 transmits PDSCH3 in slot n +3, then as shown in fig. 11, in slot n +3, PDSCH1 is associated with TCI state #2, PDSCH2 is associated with TCI state #3, PDSCH3 is associated with TCI state #4, and PDSCH4 is associated with TCI state # 1.

It can be seen that the network device transmitting the physical shared channel changes, and the TCI associated with the physical shared channel also changes accordingly.

As shown in fig. 10, TRP1 to TRP4 alternately transmits PDSCH1 to PDSCH4 on slot n to slot n +3 according to a cyclic rule. Specifically, as shown in fig. 12, the cyclic rule of the correspondence between TRP1 to TRP4 and PDSCH1 to PDSCH4 in slot n to slot n +3 is: in the left column of each table in fig. 12, TRPs are kept unchanged, and PDSCH on the right column is cyclically shifted, so that the correspondence between TRP1 to TRP4 and PDSCH1 to PDSCH4 on each slot is obtained.

As shown in fig. 11, PDSCH1 associates TCI state #1 to TCI state #4 in turn according to a round robin rule from slot n to slot n + 3. Specifically, as shown in fig. 13, the cyclic rule in the time slot n to the time slot n +3 of the correspondence between the PDSCH1 to PDSCH4 and the TCI state #1 to TCI state #4 is: in the left column of each table in fig. 13, each PDSCH remains unchanged, and the right TCI column is cyclically shifted, so that the correspondence between PDSCH1 to PDSCH4 and TCI state #1 to TCI state #4 in each slot is obtained.

Note that the direction of cyclic shift in fig. 12 is different from the direction of cyclic shift in fig. 13. Since the TCI of the TRP is fixed, the PDSCH associated with the TRP is cyclically shifted counterclockwise with the PDSCH index number from large to small for the TRP, but is cyclically shifted clockwise with the TCI (or TRP) index number from small to large for the PDSCH. Wherein, the counterclockwise cyclic shift can also be called a left shift cycle; a clockwise cyclic shift may also be referred to as a right shift cycle.

In other words, as shown in fig. 14, the same PDSCH is transmitted by different TRPs and associated with different TCI states according to the round robin rule from slot n to slot n + 3. Compared with the expressions shown in fig. 12 and 13, for the same PDSCH, the cyclic shift directions of the TRP transmitted and the TCI associated therewith are identical.

Therefore, the TCI state determining method can reduce the influence of the network equipment for transmitting the power difference on data transmission, thereby improving the robustness of the transmission. In addition, the round robin rule may also be referred to as a flipping rule or an interchanging rule in the case of two physical shared channels.

In another embodiment, the preset change rule may be a circulation rule in a part of time unit, that is, the same physical shared channel changes the transmitted network device and the associated TCI status based on the circulation rule in the part of time unit; on another part of the time unit, the network devices and the associated TCI states transmitted by the same physical shared channel are the same.

For example, unlike fig. 10, in fig. 15, TRP1 transmits PDSCH1 in both slot n and slot n +2, TRP2 transmits PDSCH2 in both slot n and slot n +2, TRP3 transmits PDSCH3 in both slot n and slot n +2, and TRP4 transmits PDSCH4 in both slot n and slot n + 2; TRP1 transmits PDSCH2 on both slot n +1 and slot n +3, TRP2 transmits PDSCH3 on both slot n +1 and slot n +3, TRP3 transmits PDSCH4 on both slot n +1 and slot n +3, and TRP4 transmits PDSCH1 on both slot n +1 and slot n + 3.

Accordingly, unlike fig. 11, PDSCH1 is associated with TCI state #1 in both slot n and slot n +2, PDSCH2 is associated with TCI state #2 in both slot n and slot n +2, PDSCH3 is associated with TCI state #3 in both slot n and slot n +2, and PDSCH4 is associated with TCI state #4 in both slot n and slot n +2, as shown in fig. 16; PDSCH1 is associated with TCI state #4 in both slot n +1 and slot n +3, PDSCH2 is associated with TCI state #1 in both slot n +1 and slot n +3, PDSCH3 is associated with TCI state #2 in both slot n +1 and slot n +3, and PDSCH4 is associated with TCI state #3 in both slot n +1 and slot n + 3.

That is, the network device transmitting the physical shared channel and the associated TCI state are flipped, shifted or interchanged once based on the round robin rule on slot n +1 and slot n + 3.

Optionally, when the preset variation rule may be a cyclic rule on a part of time units, the division of each part of time units may be determined by protocol predefining or RRC configuration, and the embodiment disclosed in this application is not limited to the time unit division method exemplarily illustrated in fig. 13 and fig. 14.

In the embodiments disclosed in the present application, the terminal determines the TCI state associated with each physical shared channel in each time unit, which may specifically be determined based on the TCI information carried in the DCI. Two embodiments are described below.

In the first embodiment, the TCI information is used to indicate the TCI status of each physical shared channel in the second time unit, i.e. the TCI status of each physical shared channel in one transmission. The TCI status of each physical shared channel in other time units or the TCI status of each physical shared channel in other transmissions may be determined based on the above-mentioned predetermined variation rule. Wherein the TCI information can be carried by a TCI field in the DCI. The second time unit is the first time unit with the most front time domain position, the Kth time unit with the most back time domain position or other preset time units in the K time units.

For example, the protocol predefining or RRC notification indicates that the TCI state of each physical shared channel in the first time unit is obtained by performing the preset change rule on the TCI state of each physical shared channel in the second time unit. For example, the terminal performs cyclic shift, inversion or interchange on the TCI information corresponding to the second time unit, and the obtained TCI state sequence is used as the TCI state of each physical shared channel in the first time unit. The first time unit is a time unit different from the second time unit in the K time units.

Optionally, when the preset change rule may be a loop rule in a part of time units, the first time unit may also be a time unit adjacent to the second time unit; or the first time unit is the odd number time unit in the K time units, and the second time unit is the even number time unit in the K time units.

In the second embodiment, the TCI information is used to indicate the TCI status of each physical shared channel in K time units, that is, the TCI status of each physical shared channel in a complete transmission process. In this way, the terminal can directly read the TCI status of each physical shared channel per time unit or per transmission from the TCI information, and thus receive each physical shared channel based on the TCI status of each physical shared channel.

In this embodiment, the interpretation manner of the TCI information by the terminal may be: time domain first and frequency domain/space domain second, or frequency domain/space domain first and time domain second. Whatever interpretation is taken, the terminal may obtain the TCI status associated with each PDSCH according to the predefined pattern or rule. Wherein, firstly reading the TCI information on each time unit from the TCI information by the time domain and then the frequency domain/space domain; and then, acquiring TCI states associated with various frequency domains or TCI states associated with various spatial domains according to the TCI information on each time unit. Firstly, reading TCI states associated with each frequency domain or TCI states associated with each space domain from the TCI information by the frequency domain/space domain and then the time domain; the TCI information is then determined for each time unit.

In this embodiment, the same physical shared channel is transmitted over at least two time units with different network devices and different associated TCI states. Alternatively, the network device transmitting each physical shared channel in each time unit and the TCI status associated with each physical shared channel may also have the characteristics of the preset variation rule.

In this embodiment two, in one case, the DCI includes a TCI field, where the TCI information carried in the TCI field may indicate the TCI status of each physical shared channel in K time units; in another case, the DCI may include K TCI fields, and the TCI information carried in each TCI field indicates a TCI status of each physical shared channel in a time unit. The correspondence between the K TCI fields and the K time units can be determined based on the index numbers or identifiers of the TCI fields and the index numbers or identifiers of the time units.

In the first and second embodiments, the number of bits of the TCI information is determined based on the number of TRPs for cooperative transmission. Assuming that the number of TRPs for cooperative transmission is N, each time unit or each transmission has N physical shared channels for parallel transmission, and each physical shared channel is associated with one TCI state, so the network device needs to configure N TCI states to the terminal.

The embodiments disclosed in the present application are explained below by taking two TRPs cooperating to perform repeated transmission of two physical shared channels as an example with reference to the accompanying drawings.

Referring to fig. 15, fig. 15 is a flowchart illustrating a channel transmission method according to an embodiment of the present application, where TRP1 corresponds to a first network device in the claims, TRP2 corresponds to a second network device in the claims, and the terminal corresponds to a terminal in the claims. As shown in fig. 15, the channel transmission method may include the steps of:

101. the TRP1 sends Transmission Configuration Indication (TCI) information; the terminal receives the TCI information;

102. on a first time unit, TRP1 transmits a first physical shared channel and TRP2 transmits a second physical shared channel;

103. on a second time unit, TRP1 transmits the second physical shared channel and TRP2 transmits the first physical shared channel;

104. the terminal determines a TCI state associated with a first physical shared channel and a TCI state associated with a second physical shared channel in a first time unit according to the TCI information; and receiving a first physical shared channel transmitted by the TRP1 on the first time unit and a second physical shared channel transmitted by the TRP2 on the first time unit according to the TCI state associated with the first physical shared channel and the TCI state associated with the second physical shared channel on the first time unit;

105. the terminal determines the TCI state associated with the first physical shared channel and the TCI state associated with the second physical shared channel in the second time unit according to the TCI information; and receiving a second physical shared channel transmitted by the TRP1 on a second time unit and the first physical shared channel transmitted by the TRP2 on the second time unit according to the TCI status associated with the first physical shared channel and the TCI status associated with the second physical shared channel on the second time unit.

The first time unit and the second time unit are two time units in K time units corresponding to the K times of repeated transmission; k is an integer greater than or equal to 2; the first physical shared channel and the second physical shared channel are transmitted in parallel on each of the time units. That is, the same transport block is repeatedly transmitted between K time units, and the transport block acquires two physical shared channels in an FDM or SDM manner at each time unit. Thus, the two physical shared channels have different channel characteristics, so that the terminal obtains a more complete transport block when receiving the combination.

As shown in steps 102 and 103, the physical shared channels transmitted by TRP1 and TRP2 in the first time unit and the second time unit are interchanged according to the preset variation rule. The TCI states respectively associated with the first physical shared channel and the second physical shared channel in the first time unit and the TCI states respectively associated with the first physical shared channel and the second physical shared channel in the second time unit are also interchanged according to a preset change rule. As described above in relation to fig. 7-9.

In the embodiments disclosed herein, the TCI information may be carried in the DCI, indicated by an index value in the TCI field in the DCI. Two embodiments of how to determine the TCI status associated with each physical shared channel in steps 104, 105 are described below.

In one embodiment, the TCI information is used to indicate a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel in one of the K time units. Assuming that the TCI information is the TCI information of the second time unit, in step 105, the terminal may directly read the TCI information to obtain the first TCI state associated with the first physical shared channel and the second TCI state associated with the second physical shared channel in the second time unit. Correspondingly, the terminal can determine the TCI state associated with each physical shared channel in the first time unit according to the preset change rule.

In this embodiment, the TCI information may be indicated with an index value in the TCI field in the DCI. As shown in table 1, table 1 is a TCI status table, and index is an index value in the TCI field, based on which the TCI status associated with each physical shared channel in a time unit can be determined. The TCI state sequence corresponding to each index value in table 1 is a TCI state associated with each physical shared channel in a time unit.

TABLE 1TCI status Table

Index	TCI State sequences
		0	TCI state #0
1	TCI state #1
		…	…
6	TCI state #0,TCI state #1，
		7	TCI state #2,TCI state #3

For example, if the index in the TCI field is 6, the terminal may determine that the TCI states associated with the physical shared channels in the second time unit are TCI state #0 and TCI state #1, respectively. And each physical shared channel on the second time unit corresponds to the TCI state indicated by the index in the TCI domain one by one. Specifically, the specific association relationship in the second time unit may be determined according to the index number or identifier of the physical shared channel and the index number or identifier of the TCI state.

The index or identifier of the physical shared channel is an index or identifier of a physical layer parameter associated with the physical shared channel. The physical layer parameters include one or more of a data transport layer (layer), an antenna port (antenna port), a Code Division Multiplexing (CDM) group, and frequency domain resources.

In one example, the specific association relationship in the second time unit is determined in a one-to-one correspondence between the ascending sequence of the index numbers or identifiers of the physical shared channels and the ascending sequence of the index numbers or identifiers of the TCI states. Assuming that the first physical shared channel is PDSCH1 and the second physical shared channel is PDSCH2, the index or identifier of PDSCH1 may correspond to different identifiers according to different multiplexing methods. As shown in table 2, in the case of SDM, the identifier or index number of PDSCH1 may be the identifier or index number of Layer0, DMRS port0 or CDM group 0, and the identifier or index number of PDSCH2 may be the identifier or index number of Layer1, DMRS port2 or CDM group 1. In the FDM case, PDSCH1 may be identified with frequency domain resource 0; PDSCH2 may be identified with frequency domain resource 1. Then, the terminal may obtain the association relationship shown in table 2 for the second time unit based on table 1 according to the index of 6 in the TCI field. Wherein (X, Y) indicates that X is associated with Y.

TABLE 2 Association on a second time unit

The TCI states respectively associated with the first physical shared channel and the second physical shared channel in the first time unit are obtained by interchanging the TCI states respectively associated with the first physical shared channel and the second physical shared channel in the second time unit based on an interchange rule. The interchange rules are predefined by a protocol or configured by radio resource control, RRC.

Correspondingly, in step 104, the determining, by the terminal according to the TCI information, a TCI state associated with the first physical shared channel and a TCI state associated with the second physical shared channel in the first time unit may include: and the terminal interchanges the first TCI state associated with the first physical shared channel and the second TCI state associated with the second physical shared channel in a second time unit to obtain the second TCI state associated with the first physical shared channel and the first TCI state associated with the second physical shared channel in the first time unit. As shown in table 3, the TCI states respectively associated with PDSCH1 and PDSCH2 in table 2 are interchanged to obtain the TCI states respectively associated with PDSCH1 and PDSCH2 in the first time unit as shown in table 3.

TABLE 3 Association over a first time unit

In another embodiment, the TCI information is used to indicate the TCI status respectively associated with the first physical shared channel and the second physical shared channel in each of the K time units. In this way, in the above steps 104 and 105, the terminal may directly obtain the TCI states respectively associated with the first physical shared channel and the second physical shared channel in each time unit from the TCI information.

As mentioned above, the TCI status associated with each physical shared channel in each time unit may also satisfy the above-mentioned predetermined variation rule. For example, the TCI states respectively associated with the first physical shared channel and the second physical shared channel in the first time unit are interchanged with the TCI states according to the preset variation rule.

As can be seen, the terminal may interpret the preset variation rule to obtain the TCI status associated with each PDSCH. For example, in a one-time complete retransmission process of two physical shared channels, the preset change rule of the associated TCI state is {1,2,2,1 … }, and the terminal may interpret the preset change rule based on the number of repetitions in the time domain and the index number of the time unit in the time domain to obtain the TCI state {1,2} or {2,1} associated with the two physical shared channels in each time unit; further, TCI state #1 or TCI state #2 associated with each frequency domain parameter or each spatial domain parameter is determined based on {1,2} or {2,1} for each time unit.

As in the above embodiments, the TCI information in this embodiment may also be indicated by an index value in the TCI field in the DCI. As shown in table 4, table 4 is another TCI status table, and index is an index value in the TCI field, based on which the TCI status associated with each physical shared channel in K time units can be determined. The TCI state sequence corresponding to a part of index values in table 4 is the TCI state associated with each physical shared channel in K time units. Assuming that K is 2, the terminal reads the TCI status associated with each physical shared channel in the first time unit and the TCI status associated with each physical shared channel in the second time unit from table 4 according to the index value in the TCI field.

TABLE 4TCI status Table

As can be seen, the terminal can obtain the TCI status associated with the physical shared channel in each time unit from table 4 according to the index number of the time unit and the index number of the physical shared channel.

In one example, the specific association relationship on each time unit is determined according to the sequence of the index numbers of the time units, and the one-to-one correspondence between the ascending sequence of the index numbers or identifiers of the physical shared channel and the ascending sequence of the index numbers or identifiers of the TCI state. Optionally, in another example, the ascending order in the above example may be replaced by a descending order, or the descending order of the index numbers or identifiers of the physical shared channels corresponds to the ascending order of the index numbers or identifiers of the TCI states one by one, so as to determine a specific association relationship on each time unit.

For example, if the index number of the first time unit is before the index number of the second time unit, the first physical shared channel is PDSCH1, and the second physical shared channel is PDSCH2, the index number or identifier of PDSCH1 may correspond to different identifiers according to different multiplexing methods. As shown in table 5, in the case of SDM, the identifier or index number of PDSCH1 may be the identifier or index number of Layer0, DMRS port0 or CDM group 0, and the identifier or index number of PDSCH2 may be the identifier or index number of Layer1, DMRS port2 or CDM group 1. In the FDM case, PDSCH1 may be identified with frequency domain resource 0; PDSCH2 may be identified with frequency domain resource 1. Then, the terminal may obtain the association relationship between the first time unit and the second time unit as shown in table 5 based on table 4 according to the index of 6 in the TCI field. Wherein (X, Y) indicates that X is associated with Y.

TABLE 5 Association between a first time cell and a second time cell

In the embodiment disclosed in the application, the terminal has at least two types of interpretation rules for the TCI information.

In the first type of interpretation rule, the terminal may read the TCI state index number first according to the index number of the time unit (time domain), and then according to the index number of the physical shared channel (spatial domain/frequency domain). That is, the terminal first decodes the TCI information corresponding to the index number of the time domain or the index number of the time unit, and then decodes the TCI state associated with the index number of the spatial domain resource or the frequency domain resource.

In the second type of interpretation rule, the terminal may read the TCI state index number first according to the index number of the physical shared channel (spatial domain/frequency domain), and then according to the index number of the time unit (time domain). That is, the terminal first reads the TCI information corresponding to the index of the frequency domain resource or the time domain resource, and then reads the TCI status associated with the index of the time domain resource or the time unit.

Specifically, the terminal receives the TCI information, and determines the TCI status associated with the first physical shared channel in the first time unit and the TCI status associated with the first physical shared channel in the second time unit according to the TCI information. And the first time unit is a time unit in K time units corresponding to K repeated transmissions in the time domain. The first physical shared channel is associated with a TCI state that is different over the first time unit than its TCI state associated over the second time unit.

The two interpretation rules are set forth below in conjunction with tables 1 and 4.

And explaining the interpretation rule of the time domain and the frequency domain. First, the terminal obtains TCI information per time unit based on a repetitive transmission pattern in the time domain. And then, reading the TCI state corresponding to each frequency domain resource on each time unit based on the index number of the frequency domain resource.

For example, based on table 4, taking index equal to 7 as an example, the terminal reads TCI information { TCI state #2, TCI state #3, TCI state #2} corresponding to time unit 1 and TCI information { TCI state #3, TCI state #2} corresponding to time unit 2 from { TCI state #2, TCI state #3, TCI state #2 }. The terminal obtains the association between the frequency domain resource 1 and the TCI state #2 or the association between the PDSCH1 corresponding to the frequency domain resource 1 and the TCI state #2 according to the TCI information { TCI state #2 and TCI state #3} corresponding to the time unit 1 and the index number of the frequency domain resource; frequency domain resource 2 is associated with TCI state #3, or PDSCH2 corresponding to frequency domain resource 2 is associated with TCI state # 3. The terminal obtains the association between frequency domain resources 1 and TCI state #3 or the association between PDSCH1 corresponding to the frequency domain resources 1 and TCI state #3 according to { TCI state #3, TCI state #2} corresponding to the time unit 2 and the index number of the frequency domain resources; frequency domain resource 2 is associated with TCI state #2, or PDSCH2 corresponding to frequency domain resource 2 is associated with TCI state # 2.

For another example, take table 1, index equal to 7, time domain first and frequency domain second interpretation rule as an example. The terminal reads TCI information corresponding to the time unit 1 from the { TCI state #2 and TCI state #3} to be { TCI state #2 and TCI state #3 }; based on a preset change rule, such as cyclic shift, the TCI information corresponding to the time unit 2 is obtained as { TCI state #3, TCI state #2 }. According to the index of the frequency domain resource and the TCI information { TCI state #2, TCI state #3} corresponding to time unit 1, the terminal reads that frequency domain resource 1 (or PDSCH1 corresponding to frequency domain resource 1) is associated with TCI state #2 in time unit 1, and frequency domain resource 2 (or PDSCH2 corresponding to frequency domain resource 2) is associated with TCI state #3 in time unit 1. According to the index of the frequency domain resource and the TCI information { TCI state #3, TCI state #2} corresponding to time unit 2, the terminal reads that frequency domain resource 1 (or PDSCH1 corresponding to frequency domain resource 1) is associated with TCI state #3 in time unit 2, and frequency domain resource 2 (or PDSCH2 corresponding to frequency domain resource 2) is associated with TCI state #2 in time unit 2.

The following explains the time domain-first-space domain interpretation rule. First, the terminal obtains TCI information on each time unit based on the repetitive transmission mode on the time domain and the index number of each time unit (time domain). Then, the terminal reads the TCI state associated with the index number of each airspace resource on each time unit based on the SDM transmission module and the index number of the airspace resource.

Based on table 4, taking index equal to 7 as an example, first, the terminal repeatedly transmits twice in the time domain, and reads TCI information corresponding to time unit 1 from { TCI state #2, TCI state #3, and TCI state #2} as { TCI state #2 and TCI state #3}, and TCI information corresponding to time unit 2 as { TCI state #3 and TCI state #2 }.

Then, according to the SDM transmission mode in each time unit and the TCI information { TCI state #2, TCI state #3} corresponding to the time unit 1, the TCI state associated with the index number of the acquired spatial domain resource may be: layer0 is associated with TCI state #2, or DMRS port0 is associated with TCI state #2, or CDM group 0 is associated with TCI state #2, or PDSCH1 corresponding to Layer0, DMRS port0 or CDM group 0 is associated with TCI state # 2; and Layer1 is associated with TCI state #3, or DMRS port2 is associated with TCI state #3, or CDM group 1 is associated with TCI state #3, or PDSCH2 corresponding to Layer1, DMRS port2 or CDM group 1 is associated with TCI state # 3.

And the terminal reads the TCI state associated with the index number of each airspace resource on the time unit 2 according to the TCI information { TCI state #3, TCI state #2} corresponding to the time unit 2 and the index number of the airspace resource: layer1 is associated with TCI state #2, or DMRS port2 is associated with TCI state #2, or CDM group 1 is associated with TCI state #2, or PDSCH2 corresponding to Layer1, DMRS port2 or CDM group 1 is associated with TCI state # 2; and Layer0 is associated with TCI state #3, or DMRS port0 is associated with TCI state #3, or CDM group 0 is associated with TCI state #3, or PDSCH1 corresponding to Layer0, DMRS port0 or CDM group 0 is associated with TCI state # 3.

For another example, take table 1, index equal to 7, and time-domain-first-spatial-domain-last interpretation rule as an example. The terminal reads TCI information corresponding to the time unit 1 from the { TCI state #2 and TCI state #3} to be { TCI state #2 and TCI state #3 }; based on a preset change rule, such as cyclic shift, the TCI information corresponding to the time unit 2 is obtained as { TCI state #3, TCI state #2 }. According to the index of the spatial domain resource and the TCI information { TCI state #2, TCI state #3} corresponding to time unit 1, the terminal reads that frequency domain resource 1 (or PDSCH1 corresponding to frequency domain resource 1) is associated with TCI state #2 in time unit 1, and frequency domain resource 2 (or PDSCH2 corresponding to frequency domain resource 2) is associated with TCI state #3 in time unit 1. According to the index of the frequency domain resource and the TCI information { TCI state #3, TCI state #2} corresponding to time unit 2, the terminal reads that frequency domain resource 1 (or PDSCH1 corresponding to frequency domain resource 1) is associated with TCI state #3 in time unit 2, and frequency domain resource 2 (or PDSCH2 corresponding to frequency domain resource 2) is associated with TCI state #2 in time unit 2.

And explaining the interpretation rule of a frequency domain and a time domain. Firstly, the terminal obtains TCI information associated with each frequency domain resource according to the index number of the frequency domain resource based on the FDM transmission mode. Then, based on the time-domain repetitive transmission pattern, the TCI state on each time unit is read according to the time unit or the index number on the time domain.

For example, based on table 4, taking index equal to 7 as an example, the terminal reads that the TCI information corresponding to frequency domain resource 1 is { TCI state #2, TCI state #3} and the TCI information corresponding to frequency domain resource 2 is { TCI state #3, TCI state #2}, according to the index number of the frequency domain resource. The terminal reads that the frequency domain resource 1 is associated with the TCI state #2 in the time unit 1 and the frequency domain resource 1 is associated with the TCI state #3 in the time unit 2 according to the index number of the time unit and the TCI information { TCI state #2, TCI state #3} corresponding to the frequency domain resource 1. The terminal reads that the frequency domain resource 2 is associated with the TCI state #3 on the time unit 1 and the frequency domain resource 2 is associated with the TCI state #2 on the time unit 2 according to the index number of the time unit and the TCI information { TCI state #3, TCI state #2} corresponding to the frequency domain resource 2.

For another example, take table 1, index equal to 7, frequency domain first, time domain later interpretation rule as an example. The terminal reads TCI information corresponding to the frequency domain resource 1 from the { TCI state #2 and TCI state #3} to be { TCI state #2 and TCI state #3 }; based on a preset change rule, such as cyclic shift, the TCI information corresponding to the frequency domain resource 2 is obtained as { TCI state #3, TCI state #2 }. And the terminal reads the association between the frequency domain resource 1 and the TCI state #2 in the time unit 1 and the association between the frequency domain resource 1 and the TCI state #3 in the time unit 2 according to the index number of the time domain resource and the TCI information { TCI state #2 and TCI state #3} corresponding to the frequency domain resource 1. The terminal reads that the frequency domain resource 2 is associated with the TCI state #3 in the time unit 1 and the frequency domain resource 2 is associated with the TCI state #2 in the time unit 2 according to the index number of the time domain resource and the TCI information { TCI state #3, TCI state #2} corresponding to the frequency domain resource 2.

And describing an interpretation rule of space domain first and time domain later. Firstly, the terminal reads TCI information corresponding to the index number of each airspace resource according to the index number of the airspace resource based on the SDM transmission mode. Then, the terminal reads the TCI state associated with the index number of each spatial domain resource on each time unit according to the index number of the time unit (the index number in the time domain) and the TCI information corresponding to the index number of each spatial domain resource.

For example, based on table 4, taking index equal to 7 as an example, the terminal reads that TCI information corresponding to layer0 (or antenna port0, or CDM group 0, or PDSCH1) is { TCI state #2, TCI state #3}, and TCI information corresponding to layer1 (or antenna port2, or CDM group 1, or PDSCH2) is { TCI state #3, TCI state #2}, according to the index number of the spatial domain resource. The terminal reads layer0 (or antenna port0, or CDM group 0, or PDSCH1) to be associated with TCI state #2 in time unit 1 and layer0 (or antenna port0, or CDM group 0, or PDSCH1) to be associated with TCI state #3 in time unit 2 according to the index number of the time unit and TCI information { TCI state #2, TCI state #3} corresponding to layer0 (or antenna port0, or CDM group 0, or PDSCH 1). The terminal reads layer1 (or antenna port2, or CDM group 1, or PDSCH2) to be associated with TCI state #3 on time unit 1, and layer1 (or antenna port2, or CDM group 1, or PDSCH2) to be associated with TCI state #2 on time unit 2 according to the index number of the time unit and TCI information { TCI state #3, TCI state #2} corresponding to layer1 (or antenna port2, or CDM group 1, or PDSCH 2).

For another example, based on table 1, where index is equal to 7, the spatial domain is first followed by the time domain. The terminal reads the TCI information corresponding to layer0 (or antenna port0, or CDM group 0, or PDSCH1) from { TCI state #2, TCI state #3} to be { TCI state #2, TCI state #3}, and obtains the TCI information corresponding to layer1 (or antenna port2, or CDM group 1, or PDSCH2) to be { TCI state #3, TCI state #2} according to a preset variation rule, such as a cyclic shift rule. The terminal obtains layer0 (or antenna port0, or CDM group 0, or PDSCH1) associated with TCI state #2 in time unit 1 and layer0 (or antenna port0, or CDM group 0, or PDSCH1) associated with TCI state #3 in time unit 2, according to TCI information corresponding to the index number of the time unit (or index number in time domain) and layer0 (or antenna port0, or CDM group 0, or PDSCH 1). The terminal obtains layer1 (or antenna port2, or CDM group 1, or PDSCH2) associated with TCI state #3 in time unit 1 and layer1 (or antenna port2, or CDM group 1, or PDSCH2) associated with TCI state #2 in time unit 2, according to TCI information corresponding to index number of time unit (or index number in time domain) and layer1 (or antenna port2, or CDM group 1, or PDSCH 2).

It can be seen that, in the embodiment of the present application, for K time units corresponding to K times of repetitive transmission in a time domain, TCI states associated with the same physical shared channel determined in at least two time units are different. And the same physical shared channel is transmitted by different network devices on at least two time units. Therefore, the problem that the receiving performance of the transmitted physical shared channel is poor overall when one network device has a transmission power difference can be avoided. Therefore, in the embodiment of the application, the same physical shared channel is transmitted by a plurality of network devices, and a plurality of TCI states are associated, so that the robustness of transmission can be improved.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of a network device, a terminal, and interaction between the network device and the terminal. In order to implement the functions in the method provided by the embodiments of the present application, the network device and the terminal may include a hardware structure and a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Some of the above functions may be implemented by a hardware structure, a software module, or a hardware structure plus a software module.

Referring to fig. 18, fig. 18 is a schematic structural diagram of an apparatus according to an embodiment of the present disclosure. The apparatus may be configured to implement the method described in the method embodiment, and refer to the description in the method embodiment.

The apparatus may include one or more processors 1801. The processor 1801 may also be referred to as a processing unit, and may implement functions of a network device or a terminal device in the method provided by the embodiment of the present application. The processor 1801 may be a general-purpose processor, a special-purpose processor, or the like. The processor 1801 may be referred to as a processing unit and controls the apparatus 1800.

In an alternative design, the processor 1801 may also have instructions 1803 stored therein, and the instructions 1803 may be executed by the processor, so that the apparatus 1800 performs the method described in the foregoing method embodiment.

In another alternative design, the processor 1801 may include a communication unit to perform receive and transmit functions. The communication unit may be, for example, a transceiver circuit, or an interface circuit. The processor 1801 may implement, by using the communication unit, the method performed by the network device or the method performed by the terminal device in the method provided in the embodiment of the present application.

Optionally, the apparatus 1800 may include one or more memories 1802 therein, on which the instructions 1804 may be stored. The instructions are executable on the processor to cause the apparatus 1800 to perform the methods described in the method embodiments above. Optionally, the memory may further store data therein. The processor 1801 and the memory 1802 may be separate or integrated.

Optionally, the apparatus 1800 may further include a transceiver 1805 and an antenna 1806. The transceiver 1805 may be referred to as a communication unit, a transceiver, a transceiving circuit, a transceiver, or the like, and is configured to implement a transceiving function.

In one possible design, an apparatus 1800 (e.g., a terminal, a chip in a terminal, etc.) may include:

Thus, the apparatus 1800 can receive the physical shared channel transmitted by different network devices corresponding to different TCI states. The problem that the same physical shared channel can only be transmitted by the same network equipment, and when the transmission power of the network equipment is poor, the receiving performance of the physical shared channel is poor is solved. Therefore, the robustness of transmission can be improved.

In addition, in this design, how the processor 1801 determines the TCI status associated with each physical shared channel in each time unit according to the TCI information may refer to the related contents described in fig. 15 above. The preset change rule satisfied by the association relationship between each physical shared channel and the TCI status can also refer to the related contents described in fig. 8, fig. 9, fig. 11, fig. 12, and fig. 14. And will not be described in detail herein.

In another possible design, an apparatus 1800 (e.g., a network device, a base station, a DU or CU, a TRP or baseband chip) may include:

a processor 1801, configured to determine transmission configuration indication, TCI, information; the TCI information is used for indicating the TCI state of the first physical shared channel and the second physical shared channel which are transmitted on the time unit;

a transceiver 1805 configured to transmit a first physical shared channel and a second physical shared channel over at least two time units; and sending Transmission Configuration Indication (TCI) information; the TCI information is used for indicating the TCI state of the first physical shared channel and the second physical shared channel which are transmitted on the time unit;

The processor 1801 may also determine to transmit the first physical shared channel and the second physical shared channel over at least two time units.

Therefore, in the apparatus, the transceiver 1805 may transmit different physical shared channels, such as a first physical shared channel and a second physical shared channel, on at least two time units, thereby avoiding a problem that when the apparatus only transmits the same physical shared channel on each time unit, once a transmission power difference occurs in the network device, the reception performance of the physical shared channel is poor. Therefore, the robustness of transmission can be improved. In yet another possible design, an apparatus 1800 (e.g., an integrated circuit, a wireless device, a circuit module, or a terminal device, etc.) may comprise:

a transceiver 1805, configured to receive transmission configuration indication, TCI, information;

a processor 1801, configured to determine, according to the TCI information, a TCI status associated with the first physical shared channel in the first time unit and a TCI status associated with the first physical shared channel in the second time unit. The first time unit is a time unit in K time units corresponding to K times of repeated transmission. The first physical shared channel is associated with a TCI state that is different over the first time unit than its TCI state associated over the second time unit.

Therefore, in the apparatus, the TCI states associated with the first physical shared channel in each time unit are different, and correspondingly, the first physical shared channel is transmitted by the network devices corresponding to the different TCI states. Therefore, the problem that once one network device has a transmission power difference, the receiving performance of the first physical shared channel is poor is avoided. Therefore, the robustness of transmission can be improved.

In addition, in this design, the physical shared channel transmitted by the transceiver 1805 in each time unit may satisfy the preset variation rule, which may specifically refer to the related contents described in fig. 7, fig. 10, and fig. 13. The preset change rule satisfied by the association relationship between each physical shared channel and the TCI status can also refer to the related contents described in fig. 8, fig. 9, fig. 11, fig. 12, and fig. 14. And will not be described in detail herein.

Fig. 19 provides a schematic structural diagram of a terminal device. The terminal device can be applied to the scenes shown in fig. 1 and 2. For convenience of explanation, fig. 19 shows only main components of the terminal device. As shown in fig. 19, the terminal device includes a processor 1912, a memory, a control circuit, an antenna, and input-output means. The processor 1912 is mainly used to process a communication protocol and communication data, control the entire terminal, execute a software program, and process data of the software program. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the terminal device is powered on, the processor 1912 may read the software program in the storage unit, analyze and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit processes the baseband signals to obtain radio frequency signals and sends the radio frequency signals outwards in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal device, the radio frequency circuit receives a radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, the baseband signal is output to the processor, and the processor converts the baseband signal into the data and processes the data.

For ease of illustration, only one memory and processor 1912 are shown in FIG. 19. 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, and the like, which is not limited in this respect in the embodiment of the present invention.

As an alternative implementation, the processor 1912 may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by various buses. The baseband processor can 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 may be 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.

In one example, the antenna and the control circuit having a transmitting/receiving function can be regarded as the communication unit 1911 of the terminal device, and the processor having a processing function can be regarded as the processing unit 1912 of the terminal device. As shown in fig. 19, the terminal device includes a communication unit 1911 and a processing unit 1912. The communication unit may also be referred to as a transceiver, a transceiving means, etc. Alternatively, a device in the communication unit 1911 for implementing a receiving function may be regarded as a receiving unit, and a device in the communication unit 1911 for implementing a transmitting function may be regarded as a transmitting unit, that is, the communication unit 1911 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitting circuit, etc. Optionally, the receiving unit and the sending unit may be integrated into one unit, or may be multiple units independent of each other. The receiving unit and the transmitting unit can be in one geographical position or can be dispersed in a plurality of geographical positions.

As shown in fig. 20, yet another embodiment of the present application provides an apparatus 2000. The apparatus 2000 may comprise: a processing unit 2002. Optionally, a communication unit 2001 and a storage unit 2003 may also be included.

In one possible design, one or more of the elements in FIG. 20 may be implemented by one or more processors, or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, memories, and transceivers, which are not limited in this application. The processor, the memory and the transceiver can be arranged independently or integrated.

The apparatus has a function of implementing the terminal device or the network device described in the embodiment of the present application, for example, the apparatus includes a module or a unit or means (means) corresponding to the step of executing the terminal device or the network device described in the embodiment of the present application by the terminal device, and the function or the unit or the means (means) may be implemented by software or hardware, or may be implemented by hardware executing corresponding software, or may be implemented by a combination of software and hardware. Reference may be made in detail to the respective description of the corresponding method embodiments hereinbefore.

The device may be a terminal or a component of a terminal (e.g., an integrated circuit, a chip, etc.).

In one possible design, an apparatus 2000 may include:

a communication unit 2001 for receiving transmission configuration indication TCI information;

a processing unit 2002, configured to determine, according to the TCI information, a TCI state associated with a first physical shared channel and a TCI state associated with a second physical shared channel in a first time unit;

the first time unit is a time unit in K time units corresponding to K times of repeated transmission; k is an integer greater than or equal to 2; the first physical shared channel and the second physical shared channel are transmitted in parallel on any time unit; and TCI states associated with the same physical shared channel are different in at least two time units in the K time units.

In one possible design, an apparatus 2000 may include:

a processing unit 2002 configured to determine, according to the TCI information, a TCI status associated with the first physical shared channel over the first time unit and a TCI status associated with the second time unit. The first time unit is a time unit in K time units corresponding to K times of repeated transmission. The first physical shared channel is associated with a TCI state that is different over the first time unit than its TCI state associated over the second time unit.

The apparatus may determine a TCI status associated with each physical shared channel in each time unit based on the various alternative embodiments described in fig. 8, fig. 9, fig. 11, fig. 12, and fig. 14, and perform channel estimation on the associated physical shared channel based on the TCI status to receive the associated physical shared channel. Because the TCI state associated with each physical shared channel satisfies the preset variation rule, there may be a plurality of channel estimation results corresponding to each physical shared channel, thereby facilitating implementation of robustness of transmission of each physical shared channel.

The apparatus may also be a network device, and may also be a component of a network device (e.g., an integrated circuit, a chip, etc.). The apparatus may also be other communication units, which are used to implement the method in the embodiments of the present application.

In one possible design, an apparatus 2000 may include:

a processing unit 2002 for determining transmission configuration indication, TCI, information; the TCI information is used for indicating the TCI state of the first physical shared channel and the second physical shared channel which are transmitted on the time unit;

a communication unit 2001 for transmitting the first physical shared channel and the second physical shared channel over at least two time units; and sending Transmission Configuration Indication (TCI) information;

The processing unit 2002 is further configured to determine that the first physical shared channel and the second physical shared channel are transmitted over at least two time units.

The device can respectively transmit different physical shared channels on at least two time units, thereby avoiding the problem that the physical shared channels transmitted by the first network equipment have poor receiving performance when the first network equipment has a transmission power difference because the first network equipment only transmits the same physical shared channel on each time unit. The physical shared channel transmitted by the communication unit 2001 in each time unit may satisfy a preset variation rule, which may specifically refer to the related contents described in fig. 7, fig. 10, and fig. 13.

It is understood that some optional features in the embodiments of the present application may be implemented independently without depending on other features in some scenarios, such as a currently-based solution, to solve corresponding technical problems and achieve corresponding effects, or may be combined with other features according to requirements in some scenarios. Accordingly, the apparatuses provided in the embodiments of the present application may also implement these features or functions, which are not described herein again.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

In the embodiment of the present application, the memory may be a nonvolatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory, for example, a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

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

Claims

1. A transmission configuration indication state determination method is characterized by comprising

The terminal receives Transmission Configuration Indication (TCI) information;

the terminal determines a TCI state associated with a first physical shared channel and a TCI state associated with a second physical shared channel in a first time unit according to the TCI information;

the first time unit is a time unit in K time units corresponding to K times of repeated transmission; k is an integer greater than or equal to 2; multiplexing the first physical shared channel and the second physical shared channel on each of the time units;

2. The method of claim 1, wherein the K time units further include a second time unit, the TCI information indicating a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel over the second time unit.

3. The method of claim 1, wherein the TCI information indicates a TCI status associated with the first physical shared channel and the second physical shared channel, respectively, for each of the K time units.

4. The method of claim 2,

the terminal determines the TCI state associated with the first physical shared channel and the TCI state associated with the second physical shared channel in the first time unit according to the TCI information, and the determining includes:

and the terminal determines that the first physical shared channel is associated with a second TCI state and the second physical shared channel is associated with a first TCI state in the first time unit according to the TCI information.

5. The method of any of claims 1 to 4, wherein the first physical shared channel and the second physical shared channel are each associated with different physical layer parameters;

the physical layer parameters include: data transmission layer, antenna ports, code division multiplexing, CDM, group, and one or more of frequency domain resources.

6. The method of any of claims 1 to 5, wherein the first physical shared channel and the second physical shared channel are transmitted in a spatial domain multiplexed or frequency domain multiplexed manner over each of the time units.

7. A method for channel transmission, comprising:

a first network device transmits a first physical shared channel and a second physical shared channel on at least two time units;

the first network equipment sends Transmission Configuration Indication (TCI) information; the TCI information is used for indicating the TCI state of the first physical shared channel and the second physical shared channel which are transmitted on the time unit;

8. The method of claim 7, wherein the TCI information indicates a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel for a second time unit of the at least two time units.

9. The method of claim 7, wherein the TCI information indicates a TCI status associated with the first physical shared channel and the second physical shared channel, respectively, for each of the time units.

10. The method of claim 8, wherein the at least two time units further comprise a first time unit;

the TCI states respectively associated with the first physical shared channel and the second physical shared channel in the first time unit are obtained by interchanging the TCI states respectively associated with the first physical shared channel and the second physical shared channel in the second time unit based on an interchange rule;

the interchange rules are predefined by a protocol or configured by radio resource control, RRC.

11. The method according to any of claims 7 to 10, wherein the first physical shared channel and the second physical shared channel are associated with different physical layer parameters, respectively;

the physical layer parameters include: one or more of a data transmission layer, antenna ports, a code division multiplexing, CDM, group, and frequency domain resources.

12. The method according to any of claims 7 to 11, wherein the first physical shared channel and the second physical shared channel are transmitted in a spatial domain multiplexing or frequency domain multiplexing manner on each of the time units.

13. A channel transmission system, comprising: the system comprises a first network device, a second network device and a terminal;

the first network equipment is used for sending Transmission Configuration Indication (TCI) information; transmitting a first physical shared channel to the terminal on a first time unit; and transmitting the second physical shared channel to the terminal in a second time unit;

the second network device is configured to send a second physical shared channel to the terminal in a first time unit; and transmitting the first physical shared channel to the terminal in a second time unit;

the first time unit and the second time unit are two time units in K time units occupied by K times of repeated transmission; k is an integer greater than or equal to 2; multiplexing the first physical shared channel and the second physical shared channel on each of the time units;

on the same time unit, the first physical shared channel and the second physical shared channel are respectively associated with different TCI states;

the first physical shared channel on the first time unit and the second physical shared channel on the second time unit are respectively associated with the same TCI state;

the second physical shared channel on the first time unit and the first physical shared channel on the second time unit are respectively associated with the same TCI state.

14. The channel transmission system as claimed in claim 13,

the terminal is used for receiving the TCI information; according to the TCI information, determining TCI states respectively associated with the first physical shared channel and the second physical shared channel in the first time unit and TCI states respectively associated with the first physical shared channel and the second physical shared channel in the second time unit;

the terminal is further configured to receive, according to TCI states respectively associated with the first physical shared channel and the second physical shared channel in the first time unit, the first physical shared channel sent by the first network device and the second physical shared channel sent by the second network device in the first time unit;

the terminal is further configured to receive, according to TCI states respectively associated with the first physical shared channel and the second physical shared channel in the second time unit, the second physical shared channel sent by the first network device and the first physical shared channel sent by the second network device in the second time unit;

and the TCI states associated with the same physical shared channel are different in the first time unit and the second time unit.

15. The channel transmission system according to claim 13 or 14, wherein the TCI information is used to indicate a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel over a second time unit;

16. The channel transmission system according to claim 13, wherein the TCI information is used to indicate the TCI status respectively associated with the first physical shared channel and the second physical shared channel for each of the K time units.

17. The channel transmission system as claimed in claim 15,

the terminal is specifically configured to read, from the TCI information, a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel in the second time unit; and interchanging the first TCI status associated with the first physical shared channel and the second TCI status associated with the second physical shared channel in the second time unit to obtain the second TCI status associated with the first physical shared channel and the first TCI status associated with the second physical shared channel in the first time unit.

18. The channel transmission system according to any of claims 13 to 17, wherein the first physical shared channel and the second physical shared channel are respectively associated with different physical layer parameters;

19. The channel transmission system according to any of claims 13 to 18, wherein said first physical shared channel and said second physical shared channel are transmitted in spatial multiplexing or frequency domain multiplexing on each of said time units.

20. A terminal device, characterized by comprising

21. The terminal device of claim 20, wherein the K time units further include a second time unit, the TCI information indicating a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel over the second time unit.

22. The terminal device of claim 20, wherein the TCI information is used to indicate a TCI status associated with the first physical shared channel and the second physical shared channel, respectively, for each of the K time units.

23. The terminal device of claim 21,

the processing unit is specifically configured to determine, in the first time unit, that the first physical shared channel is associated with the second TCI state and that the second physical shared channel is associated with the first TCI state according to the TCI information.

24. The terminal device according to any of claims 20 to 23, wherein the first physical shared channel and the second physical shared channel are associated with different physical layer parameters, respectively;

25. The terminal device of claims 20 to 24, wherein the first physical shared channel and the second physical shared channel are transmitted in a spatial multiplexing or frequency domain multiplexing manner on each of the time units.

26. A network device, comprising:

a communication unit for transmitting a first physical shared channel and a second physical shared channel over at least two time units;

the communication unit is further configured to send the transmission configuration indication TCI information;

27. The network device of claim 26, wherein the TCI information indicates a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel for a second time unit of the at least two time units.

28. The network device of claim 26, wherein the TCI information indicates a TCI status associated with the first physical shared channel and the second physical shared channel, respectively, for each of the at least two time units.

29. The network device of claim 27, wherein a first time unit is a time unit adjacent to the second time unit of the at least two time units;

30. The network device of any one of claims 26 to 29, wherein the first physical shared channel and the second physical shared channel are each associated with different physical layer parameters;

31. The network device of any of claims 26 to 30, wherein the first physical shared channel and the second physical shared channel are transmitted spatially multiplexed or frequency domain multiplexed on each of the time units.

32. A chip, comprising: at least one processor and an interface;

the interface is used for inputting Transmission Configuration Indication (TCI) information;

the processor is configured to determine, according to the TCI information, a TCI status associated with a first physical shared channel and a TCI status associated with a second physical shared channel in a first time unit; the first time unit is a time unit in K time units corresponding to K times of repeated transmission; k is an integer greater than or equal to 2; multiplexing the first physical shared channel and the second physical shared channel on each of the time units;

the processor is configured to determine that TCI states associated with the same physical shared channel are different in at least two of the K time units.

33. The chip of claim 32, wherein the K time units further include a second time unit, the TCI information to indicate a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel over the second time unit.

34. The chip of claim 32, wherein the TCI information is to indicate a TCI status associated with the first physical shared channel and the second physical shared channel, respectively, for each of the K time units.

35. The chip of claim 33,

the processor is specifically configured to determine, in the first time unit, that the first physical shared channel is associated with the second TCI state and that the second physical shared channel is associated with the first TCI state according to the TCI information.

36. The chip of any one of claims 32 to 35, wherein the first physical shared channel and the second physical shared channel are each associated with different physical layer parameters;

37. The chip of any one of claims 32 to 36, wherein the first physical shared channel and the second physical shared channel are transmitted in a spatial multiplexing or frequency domain multiplexing manner over each of the time units.

38. A chip, comprising: at least one processor and an interface;

the processor configured to determine to transmit a first physical shared channel and a second physical shared channel over at least two time units;

the interface is used for transmitting a first physical shared channel and a second physical shared channel on at least two time units; and for sending transmission configuration indication, TCI, information; the TCI information is used for indicating the TCI state of the first physical shared channel and the second physical shared channel which are transmitted on the time unit;

39. The chip of claim 38, wherein the TCI information indicates a first TCI status associated with the first physical shared channel and a second TCI status associated with the second physical shared channel over a second time unit of the at least two time units.

40. The chip of claim 38, wherein the TCI information indicates a TCI status associated with the first physical shared channel and the second physical shared channel, respectively, for each of the time units.

41. The chip of claim 39, in which the at least two time units further comprise a first time unit;

42. The chip of any one of claims 38 to 41, wherein the first physical shared channel and the second physical shared channel are respectively associated with different physical layer parameters;

43. The chip of any one of claims 38 to 42, wherein the first physical shared channel and the second physical shared channel are transmitted in a spatial domain multiplexing or frequency domain multiplexing manner on each of the time units.

44. A computer storage medium storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 6 or the method of any one of claims 7 to 12.