A downlink transmission method and apparatus

Abstract

The present application relates to a downlink transmission method and apparatus. Determine the time domain position of at least one first transmission resource in the resources of a downlink data channel, wherein when the at least one first transmission resource is a plurality of first transmission resources, the starting positions of the time domain positions of the plurality of first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information. Determine the conditions satisfied by the at least one first transmission resource according to the time domain position of the at least one first transmission resource and the time domain position of the resources of the downlink data channel. Determine the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel according to the conditions. The embodiments of the present application provide an implementation manner for transmitting downlink control information in the resources of the downlink data channel.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a downlink transmission method and apparatus. Background Art

[0002] Currently, when a base station needs to send downlink control information (DCI) to a user equipment (UE), it needs to be sent through a physical downlink control channel (PDCCH). In current protocols, resources are preset, and the UE can monitor the PDCCH in the preset resources. To ensure the scheduling flexibility of multiple users, the UE may need to monitor the PDCCH in a relatively large number of preset resources, which increases the power consumption of the UE and also increases the reception delay of the DCI. Summary of the Invention

[0003] Embodiments of this application provide a downlink transmission method and apparatus for reducing the power consumption of a UE for receiving downlink control information.

[0004] In a first aspect, a first downlink transmission method is provided. This method can be executed by a terminal device, or by a chip system that can implement the functions of the terminal device, or by a larger device including the terminal device. The method includes: determining a time domain position of at least one first transmission resource in resources of a downlink data channel, where, when the at least one first transmission resource is a plurality of first transmission resources, start positions of time domain positions of the plurality of first transmission resources are the same, and the at least one first transmission resource can be used for transmitting downlink control information; determining a condition satisfied by the at least one first transmission resource according to the time domain position of the at least one first transmission resource and the time domain position of the resources of the downlink data channel, where the condition satisfied by the at least one first transmission resource includes a first condition or a second condition, the first condition is that a start position of the time domain position of the at least one first transmission resource is earlier than a first time domain position, and the second condition is that the start position of the time domain position of the at least one first transmission resource is equal to or later than the first time domain position, where the first time domain position is a position obtained by offsetting a start position of the time domain position of the resources of the downlink data channel by a first time interval, and the first time domain position is equal to or later than the start position of the time domain position of the resources of the downlink data channel; determining downlink control information and / or a transmission manner of the downlink data channel in the resources of the downlink data channel according to the condition satisfied by the at least one first transmission resource.

[0005] Embodiments of the present application propose that downlink control information can be transmitted through the resources of the downlink data channel, which is equivalent to expanding the resources capable of transmitting downlink control information. In this way, the terminal device can monitor (or detect, or listen for) downlink control information in the resources of the downlink data channel configured for the terminal device, which can reduce the number of times the terminal device monitors the downlink control channel in the preset resources while ensuring the transmission performance of the downlink control information of the terminal device as much as possible, reduce the power consumption of the terminal device, and also reduce the reception delay of the downlink control information. Moreover, embodiments of the present application can determine the conditions satisfied by at least one first transmission resource capable of transmitting downlink control information in the resources of the downlink data channel, so as to determine the transmission mode of the downlink control information and / or the downlink data channel in the resources of the downlink data channel, which is equivalent to providing an implementation manner for the transmission of downlink control information in the resources of the downlink data channel.

[0006] In an alternative embodiment, the method further includes: receiving first downlink control information from a network device. Wherein, when the at least one first transmission resource satisfies the first condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate that the at least one first transmission resource does not transmit downlink control information; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate monitoring downlink control information on the at least one first transmission resource; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information does not indicate that the at least one first transmission resource transmits downlink control information, does not indicate that the at least one first transmission resource does not transmit downlink control information, and does not indicate monitoring downlink control information on the at least one first transmission resource.

[0007] Since missed detection or false alarms may occur in the downlink control information, which affects the performance of the downlink data channel, in order to improve the performance of the downlink data channel, the terminal device can use the first downlink control information to determine the transmission mode of the downlink control information in the resources of the downlink data channel. If at least one first transmission resource meets the first condition, it indicates that the distance between the time domain position of at least one first transmission resource and the time domain position of the first downlink control information may be relatively close. When the network device sends the first downlink control information, it can clearly determine whether the downlink control information will be sent in at least one first transmission resource. Therefore, the first indication information can give a relatively clear indication, reducing the blind detection process of the terminal device. If the first transmission resource meets the second condition, it indicates that the distance between the time domain position of at least one first transmission resource and the time domain position of the first downlink control information is relatively far. When the network device sends the first downlink control information, it may be able to clearly determine whether the downlink control information will be sent in at least one first transmission resource, or it may not be able to clearly determine whether the downlink control information will be sent in at least one first transmission resource. Therefore, when it is not clear, the first downlink control information can indicate to monitor the downlink control information on at least one first transmission resource, rather than indicating that at least one first transmission resource does not transmit the downlink control information. Through this indication method, considering the different generation times of the downlink control information, the probability of the terminal device detecting errors is reduced. Or, if the first transmission resource meets the second condition, it is possible that the network device still cannot clearly determine whether the downlink control information will be sent in at least one first transmission resource when sending the first downlink control information. Therefore, the first downlink control information does not indicate whether the downlink control information is transmitted on at least one first transmission resource, and the terminal device can perform blind detection, thereby also reducing the probability of indication errors.

[0008] In an alternative embodiment, determining the transmission mode of the downlink control information in the resources of the downlink data channel according to the conditions met by the at least one first transmission resource includes:

[0009] When the at least one first transmission resource meets the first condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits; or, when the at least one first transmission resource meets the first condition and the network device indicates that the at least one first transmission resource transmits the downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits;

[0010] When the at least one first transmission resource meets the first condition and the network device instructs to monitor downlink control information on the at least one first transmission resource, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits; wherein, the first number of bits is less than the second number of bits.

[0011] In an alternative embodiment, determining the transmission mode of the downlink control information in the resources of the downlink data channel according to the condition met by the at least one first transmission resource includes: when the at least one first transmission resource meets the second condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits; or, when the at least one first transmission resource meets the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits, or when the at least one first transmission resource meets the second condition and the network device instructs to monitor downlink control information on the at least one first transmission resource, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits. Wherein, the first number of bits is less than the second number of bits.

[0012] If it is known for sure that a set of transmission resources will transmit downlink control information, the number of CRC bits can be less to reduce the transmission overhead; if it is not known for sure whether a set of transmission resources will transmit downlink control information, the number of CRC bits needs to be more to reduce the probability of incorrect detection of downlink control information.

[0013] In an alternative embodiment, determining the transmission mode of the downlink data channel in the resources of the downlink data channel according to the condition met by the at least one first transmission resource includes: when the at least one first transmission resource meets the first condition, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode; or, when the at least one first transmission resource meets the first condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode.

[0014] If it is known for sure that a set of transmission resources will transmit downlink control information, the performance of rate matching will be better than puncturing. Alternatively, it is not necessary to determine whether a set of transmission resources will transmit downlink control information. As long as at least one first transmission resource meets the first condition, the terminal device determines that the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resource is the rate matching method. That is, the terminal device does not need to judge other conditions, and the implementation method is relatively simple for the terminal device.

[0015] In an alternative embodiment, determining the transmission mode of the downlink data channel in the resources of the downlink data channel according to the condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource meets the second condition, determining that the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resource is the puncturing method; or, when the at least one first transmission resource meets the second condition and the network device indicates that the at least one first transmission resource transmits downlink control information, determining that the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resource is the rate matching method; or, when the at least one first transmission resource meets the second condition and the network device indicates to monitor downlink control information on the at least one first transmission resource, determining that the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resource is the puncturing method.

[0016] If it is known for sure that a set of transmission resources will transmit downlink control information, then the performance of rate matching is better than puncturing. Therefore, if it is known for sure that at least one first transmission resource transmits downlink control information, the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources can be the rate matching method. If it is not known for sure whether at least one first transmission resource transmits downlink control information, for example, it is necessary to know whether at least one first transmission resource transmits downlink control information through blind detection, then the puncturing method can ensure that the mapping of the resources used for transmitting the downlink data channel in the resources of the downlink data channel is correct regardless of whether the result of the blind detection is correct or not. Therefore, when the blind detection may produce errors, the performance of puncturing is better than that of rate matching. Therefore, if the network device instructs to monitor downlink control information on at least one first transmission resource, the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the puncturing method. Alternatively, it is not necessary to determine whether a set of transmission resources will transmit downlink control information. As long as at least one first transmission resource meets the second condition, the terminal device determines that the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the puncturing method, that is, the terminal device does not need to judge other conditions, and the implementation method is relatively simple for the terminal device.

[0017] In an optional implementation manner, determining the transmission method of the downlink data channel in the resources of the downlink data channel according to the condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource meets the first condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that the redundancy versions of the first repetition and the second repetition of the downlink data channel in the time domain are both the first redundancy version configured by the network device for the downlink data channel; when the at least one first transmission resource meets the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that the redundancy version of the first repetition of the downlink data channel in the time domain is the first redundancy version configured by the network device for the downlink data channel, and the redundancy version of the second repetition in the time domain is the second redundancy version configured by the network device for the downlink data channel.

[0018] For example, when at least one first transmission resource meets the first condition, the time domain position of at least one first transmission resource is relatively forward, and it is very likely that at least one first transmission resource will be entirely within the resources of the first repetition of the downlink data channel in the time domain. In this case, if at least one first transmission resource transmits downlink control information, the downlink control information will occupy a certain number of bits, which may cause the first repetition to be unable to transmit the complete system bits. Then, for the terminal device, if it receives a transport block that does not include the complete system bits, it may not be able to perform self-decoding and thus cannot obtain the original information. Therefore, in the embodiments of the present application, the redundancy versions of the first and second repetitions of the downlink data channel in the time domain can be the first redundancy version configured by the network device for the downlink data channel. For example, the transport block transmitted using this redundancy version can include system bits. Then, even if the first repetition of the downlink data channel in the time domain cannot include the complete system bits due to the transmission of downlink control information, since the redundancy version of the second repetition of the downlink data channel in the time domain is also this redundancy version, the second repetition of the downlink data channel in the time domain can include the complete system bits. Then, the terminal device can also perform self-decoding based on the transport block transmitted by the second repetition of the downlink data channel in the time domain, thereby obtaining the original information, and thus improving the probability of correct decoding of the terminal device.

[0019] In an alternative embodiment, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources among the plurality of first transmission resources that correspond to different aggregation levels.

[0020] If at least one transmission resource includes a plurality of first transmission resources, then among these plurality of first transmission resources, there may be two first transmission resources that correspond to different aggregation levels. For example, the different first transmission resources among the plurality of first transmission resources correspond to different aggregation levels, that is, the aggregation level corresponds one-to-one with the first transmission resource; or, among the plurality of first transmission resources, there may be two first transmission resources that correspond to the same aggregation level, but there are also two first transmission resources that correspond to different aggregation levels.

[0021] Second aspect, a second downlink transmission method is provided. This method can be executed by a terminal device, or by a chip system that can implement the functions of the terminal device, or by a larger device including the terminal device. The method includes: determining the time domain position of at least one first transmission resource in the resources of the downlink data channel, where, when the at least one first transmission resource is multiple first transmission resources, the starting positions of the time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information; determining the conditions satisfied by the at least one first transmission resource according to the time domain position of the at least one first transmission resource and the time domain position of the resources of the downlink data channel, where the conditions satisfied by the at least one first transmission resource include a first condition or a second condition, the first condition is that all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain, and the second condition is that not all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain; determining the downlink control information in the resources of the downlink data channel and / or the transmission mode of the downlink data channel according to the conditions satisfied by the at least one first transmission resource.

[0022] In the embodiments of the present application, it is proposed that downlink control information can be transmitted through the resources of the downlink data channel, which is equivalent to expanding the resources capable of transmitting downlink control information. In this way, the terminal device can monitor (or detect, or listen for) downlink control information in the resources of the downlink data channel configured for the terminal device. It is possible to reduce the number of times the terminal device monitors the downlink control channel in the preset resources, reduce the power consumption of the terminal device, and also reduce the reception delay of the downlink control information while ensuring the transmission performance of the downlink control information of the terminal device as much as possible. Moreover, in the embodiments of the present application, the conditions satisfied by at least one first transmission resource capable of transmitting downlink control information in the resources of the downlink data channel can be determined according to the time domain position of the at least one first transmission resource, so that the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel can be determined, which is equivalent to providing an implementation method for the transmission of downlink control information in the resources of the downlink data channel.

[0023] In an alternative embodiment, the method further includes: receiving first downlink control information from a network device. Wherein, when the at least one first transmission resource meets the first condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate that the at least one first transmission resource does not transmit downlink control information; or, when the at least one first transmission resource meets the second condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate monitoring downlink control information on the at least one first transmission resource; or, when the at least one first transmission resource meets the second condition, the first downlink control information does not indicate that the at least one first transmission resource transmits downlink control information, does not indicate that the at least one first transmission resource does not transmit downlink control information, and does not indicate monitoring downlink control information on the at least one first transmission resource.

[0024] In an alternative embodiment, determining a transmission manner of downlink control information in resources of the downlink data channel according to a condition met by the at least one first transmission resource includes:

[0025] When the at least one first transmission resource meets the first condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits; or, when the at least one first transmission resource meets the first condition and the network device indicates that the at least one first transmission resource transmits downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits;

[0026] When the at least one first transmission resource meets the first condition and the network device indicates monitoring downlink control information on the at least one first transmission resource, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits;

[0027] Wherein, the first number of bits is less than the second number of bits.

[0028] In an alternative embodiment, determining a transmission mode of downlink control information in resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the second condition, determining that a CRC bit number of the downlink control information transmitted in the at least one first transmission resource is a second bit number; or, when the at least one first transmission resource satisfies the second condition and a network device indicates that the at least one first transmission resource transmits downlink control information, determining that the CRC bit number of the downlink control information transmitted in the at least one first transmission resource is a first bit number, or when the at least one first transmission resource satisfies the second condition and the network device indicates monitoring of downlink control information on the at least one first transmission resource, determining that the CRC bit number of the downlink control information transmitted in the at least one first transmission resource is the second bit number. Wherein, the first bit number is less than the second bit number.

[0029] In an alternative embodiment, determining a transmission mode of the downlink data channel in resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the first condition, determining that a mapping mode adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information in the at least one first transmission resource is a rate matching mode; or, when the at least one first transmission resource satisfies the first condition and the network device indicates that the at least one first transmission resource transmits downlink control information, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode.

[0030] In an optional implementation manner, determining a transmission manner of the downlink data channel in the resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the second condition, determining that a mapping manner adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a puncturing manner; or, when the at least one first transmission resource satisfies the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that a mapping manner adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a rate matching manner; or, when the at least one first transmission resource satisfies the second condition and the network device instructs to monitor downlink control information on the at least one first transmission resource, determining that a mapping manner adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a puncturing manner.

[0031] In an optional implementation manner, determining a transmission manner of the downlink data channel in the resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the first condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that redundancy versions of the first repetition and the second repetition of the downlink data channel in the time domain are both the first redundancy version configured by the network device for the downlink data channel; when the at least one first transmission resource satisfies the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that a redundancy version of the first repetition of the downlink data channel in the time domain is the first redundancy version configured by the network device for the downlink data channel, and a redundancy version of the second repetition of the downlink data channel in the time domain is the second redundancy version configured by the network device for the downlink data channel.

[0032] In an optional implementation manner, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources corresponding to different aggregation levels among the plurality of first transmission resources.

[0033] Regarding the technical effects brought by various optional implementation manners of the second aspect, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementation manner.

[0034] In a third aspect, a third downlink transmission method is provided. This method can be executed by a network device or by a chip system that can implement the functions of the network device. Exemplarily, the network device is an access network device, such as a base station. The method includes: configuring resources for a downlink data channel for a terminal device, where the resources of the downlink data channel include at least one first transmission resource. When the at least one first transmission resource is multiple first transmission resources, the starting positions of the time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information; determining the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel according to the conditions satisfied by the at least one first transmission resource, where the at least one first transmission resource satisfies a first condition or a second condition, and the conditions satisfied by the at least one first transmission resource are determined by the time domain position of the at least one first transmission resource and the time domain position of the resources of the downlink data channel. The first condition is that the starting position of the time domain position of the at least one first transmission resource is earlier than a first time domain position, and the second condition is that the starting position of the time domain position of the at least one first transmission resource is equal to or later than the first time domain position, where the first time domain position is the position obtained by offsetting the starting position of the time domain position of the resources of the downlink data channel by a first time interval, and the first time domain position is equal to or later than the starting position of the time domain position of the resources of the downlink data channel.

[0035] In an optional implementation manner, the method further includes: sending first downlink control information to the terminal device. Wherein, when the at least one first transmission resource satisfies the first condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate that the at least one first transmission resource does not transmit downlink control information; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate monitoring downlink control information on the at least one first transmission resource; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information does not indicate that the at least one first transmission resource transmits downlink control information, does not indicate that the at least one first transmission resource does not transmit downlink control information, and does not indicate monitoring downlink control information on the at least one first transmission resource.

[0036] In an optional implementation manner, determining the transmission mode of the downlink control information in the resources of the downlink data channel according to the conditions satisfied by the at least one first transmission resource includes:

[0037] When the at least one first transmission resource meets the first condition, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits; or, when the at least one first transmission resource meets the first condition and the at least one first transmission resource transmits downlink control information, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits;

[0038] When the at least one first transmission resource meets the first condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits;

[0039] Wherein, the first number of bits is less than the second number of bits.

[0040] In an alternative embodiment, determining the transmission mode of the downlink control information in the resources of the downlink data channel according to the condition met by the at least one first transmission resource includes: when the at least one first transmission resource meets the second condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; or, when the at least one first transmission resource meets the second condition and the at least one first transmission resource transmits downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits, or when the at least one first transmission resource meets the second condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits. Wherein, the first number of bits is less than the second number of bits.

[0041] In an alternative embodiment, determining the transmission mode of the downlink data channel in the resources of the downlink data channel according to the condition met by the at least one first transmission resource includes: when the at least one first transmission resource meets the first condition, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode; or, when the at least one first transmission resource meets the first condition and the at least one first transmission resource transmits downlink control information, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode.

[0042] In an alternative embodiment, determining a transmission mode of a downlink data channel in resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the second condition, determining that a mapping mode adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a puncturing mode; or, when the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, determining that a mapping mode adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a rate matching mode; or, when the at least one first transmission resource satisfies the second condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determining that a mapping mode adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a puncturing mode.

[0043] In an alternative embodiment, determining a transmission mode of a downlink data channel in resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the first condition and the at least one first transmission resource transmits downlink control information, determining that redundancy versions of a first repetition and a second repetition of the downlink data channel in a time domain are both a first redundancy version configured by the network device for the downlink data channel; when the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, determining that a redundancy version of a first repetition of the downlink data channel in a time domain is a first redundancy version configured by the network device for the downlink data channel, and a redundancy version of a second repetition of the downlink data channel in a time domain is a second redundancy version configured by the network device for the downlink data channel.

[0044] In an alternative embodiment, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources corresponding to different aggregation levels among the plurality of first transmission resources.

[0045] Regarding the technical effects brought by the third aspect or various alternative embodiments, reference may be made to the introduction of the technical effects of the first aspect or the corresponding embodiments.

[0046] Fourthly, a fourth downlink transmission method is provided. This method can be executed by a network device or by a chip system that can implement the functions of the network device. Exemplarily, the network device is an access network device, such as a base station. The method includes: configuring resources for a downlink data channel for a terminal device, where the resources of the downlink data channel include at least one first transmission resource. When the at least one first transmission resource is multiple first transmission resources, the starting positions of the time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information; determining the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel according to the conditions satisfied by the at least one first transmission resource. Among them, the at least one first transmission resource satisfies a first condition or a second condition, and the conditions satisfied by the at least one first transmission resource are determined by the time domain position of the at least one first transmission resource and the time domain position of the resources of the downlink data channel. The first condition is that all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain, and the second condition is that not all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain.

[0047] In an optional implementation manner, the method further includes: sending first downlink control information to the terminal device. Among them, when the at least one first transmission resource satisfies the first condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate that the at least one first transmission resource does not transmit downlink control information; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate monitoring downlink control information on the at least one first transmission resource; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information does not indicate that the at least one first transmission resource transmits downlink control information, does not indicate that the at least one first transmission resource does not transmit downlink control information, and does not indicate monitoring downlink control information on the at least one first transmission resource.

[0048] In an optional implementation manner, determining the transmission mode of the downlink control information in the resources of the downlink data channel according to the conditions satisfied by the at least one first transmission resource includes:

[0049] When the at least one first transmission resource meets the first condition, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits; or, when the at least one first transmission resource meets the first condition and the at least one first transmission resource transmits downlink control information, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits;

[0050] When the at least one first transmission resource meets the first condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits;

[0051] Wherein, the first number of bits is less than the second number of bits.

[0052] In an alternative embodiment, according to the condition met by the at least one first transmission resource, determining the transmission mode of the downlink control information in the resources of the downlink data channel includes: when the at least one first transmission resource meets the second condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; or, when the at least one first transmission resource meets the second condition and the at least one first transmission resource transmits downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits, or when the at least one first transmission resource meets the second condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits. Wherein, the first number of bits is less than the second number of bits.

[0053] In an alternative embodiment, according to the condition met by the at least one first transmission resource, determining the transmission mode of the downlink data channel in the resources of the downlink data channel includes: when the at least one first transmission resource meets the first condition, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode; or, when the at least one first transmission resource meets the first condition and the at least one first transmission resource transmits downlink control information, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode.

[0054] In an alternative embodiment, determining a transmission mode of the downlink data channel for resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the second condition, determining that a mapping mode adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a puncturing mode; or, when the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, determining that a mapping mode adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a rate matching mode; or, when the at least one first transmission resource satisfies the second condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determining that a mapping mode adopted by the resources of the downlink data channel for a first transmission resource that transmits downlink control information among the at least one first transmission resources is a puncturing mode.

[0055] In an alternative embodiment, determining a transmission mode of the downlink data channel for resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the first condition and the at least one first transmission resource transmits downlink control information, determining that redundancy versions of the first repetition and the second repetition of the downlink data channel in the time domain are both the first redundancy version configured by the network device for the downlink data channel; when the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, determining that a redundancy version of the first repetition of the downlink data channel in the time domain is the first redundancy version configured by the network device for the downlink data channel, and a redundancy version of the second repetition in the time domain is the second redundancy version configured by the network device for the downlink data channel.

[0056] In an alternative embodiment, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources corresponding to different aggregation levels among the plurality of first transmission resources.

[0057] Regarding the technical effects brought by the fourth aspect or various alternative embodiments, reference may be made to the introduction of the technical effects of the second aspect or the corresponding embodiments.

[0058] Fifth aspect, a fifth downlink transmission method is provided. This method can be executed by a terminal device, or by a chip system that can implement the functions of the terminal device, or by a larger device including the terminal device. The method includes: receiving a first signaling from a network device, where the first signaling is used to indicate whether at least one first transmission resource transmits downlink control information. Among them, when the at least one first transmission resource is multiple first transmission resources, the starting positions of the time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information; determining the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel according to the first signaling.

[0059] In the embodiments of this application, it is proposed that the downlink control information can be transmitted through the resources of the downlink data channel, which is equivalent to expanding the resources capable of transmitting the downlink control information. In this way, the terminal device can monitor (or, translated as listen) for the downlink control information in the resources of the downlink data channel configured for the terminal device. It can reduce the number of times the terminal device monitors the downlink control channel in the preset resources, reduce the power consumption of the terminal device, and also reduce the reception delay of the downlink control information while ensuring the transmission performance of the downlink control information of the terminal device as much as possible. Moreover, in the embodiments of this application, the network device can send a first signaling to indicate whether at least one first transmission resource transmits downlink control information. Then the terminal device can determine whether at least one first transmission resource transmits downlink control information according to the first signaling, which can reduce the probability of monitoring errors of the terminal device. Moreover, the first downlink control information can also indicate to monitor the downlink control information on at least one first transmission resource, that is, it can indicate such an uncertain situation, which takes into account the different generation times of the downlink control information. Among them, "monitor (or, listen)" is different from "detect". "Monitor" focuses on describing the monitoring process of the terminal device for the downlink control information, and the result of the monitoring may be detecting the downlink control information or not detecting the downlink control information. "Detect" focuses more on describing the result, such as "detecting the downlink control information".

[0060] In an optional implementation manner, determining the transmission mode of the downlink control information in the resources of the downlink data channel according to the first signaling includes: when the first signaling indicates that the at least one first transmission resource transmits downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits; when the first signaling indicates to monitor the downlink control information on the at least one first transmission resource, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits. Among them, the first number of bits is less than the second number of bits.

[0061] If it is known for sure that downlink control information is transmitted in a set of transmission resources, the number of CRC bits can be reduced to reduce the transmission overhead; if it is not known whether downlink control information is transmitted in a set of transmission resources, more CRC bits are required to reduce the probability of error in monitoring the downlink control information.

[0062] In an alternative embodiment, determining the transmission mode of the downlink data channel in the resources of the downlink data channel according to the first signaling includes: when the first signaling indicates that the at least one first transmission resource transmits downlink control information, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode; or, when the first signaling indicates monitoring for downlink control information on the at least one first transmission resource and downlink control information is detected in the at least one first transmission resource, determining that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the puncturing mode.

[0063] If it is known for sure that a set of transmission resources will transmit downlink control information, the performance of rate matching will be better than that of puncturing. Therefore, if it is known for sure that at least one first transmission resource transmits downlink control information, the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource can be the rate matching mode. If it is not known whether at least one first transmission resource transmits downlink control information, for example, it is necessary to perform blind detection to know whether at least one first transmission resource transmits downlink control information, the puncturing mode can ensure that the mapping of the resources used to transmit the downlink data channel in the resources of the downlink data channel is correct regardless of whether the result of the blind detection is correct or not. Thus, when blind detection may result in errors, the performance of puncturing is better than that of rate matching. Therefore, if the first signaling indicates monitoring for downlink control information on at least one first transmission resource, the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the puncturing mode.

[0064] In an alternative embodiment, determining a transmission mode of a downlink data channel in a resource of the downlink data channel according to the first signaling includes: when the first signaling indicates that the at least one first transmission resource transmits downlink control information, determining that redundancy versions of a first repetition and a second repetition of the downlink data channel in a time domain are both a first redundancy version configured by the network device for the downlink data channel; or, when the first signaling indicates monitoring for downlink control information on the at least one first transmission resource, determining that a redundancy version of a first repetition of the downlink data channel in a time domain is a first redundancy version configured by the network device for the downlink data channel, and a redundancy version of a second repetition of the downlink data channel in a time domain is a second redundancy version configured by the network device for the downlink data channel; or, when the first signaling indicates that the at least one first transmission resource does not transmit downlink control information, determining that a redundancy version of a first repetition of the downlink data channel in a time domain is a first redundancy version configured by the network device for the downlink data channel, and a redundancy version of a second repetition of the downlink data channel in a time domain is a second redundancy version configured by the network device for the downlink data channel.

[0065] If at least one first transmission resource transmits downlink control information, then if at least one first transmission resource is within the resources of the first repetition of the downlink data channel in the time domain, since the at least one first transmission resource transmits downlink control information, the downlink control information will occupy a certain number of bits, which may cause the first repetition of the downlink data channel in the time domain to be unable to transmit the complete system bits. Then, for the terminal device, if it receives a transport block that does not include the complete system bits, it may not be able to perform self-decoding, and thus may not be able to obtain the original information. Therefore, in this case, the redundancy versions of the first repetition and the second repetition of the downlink data channel in the time domain can be the first redundancy version configured by the network device for this downlink data channel. For example, the transport block transmitted using this redundancy version can include the system bits. Then, even if the first repetition of the downlink data channel in the time domain cannot include the complete system bits due to the transmission of downlink control information, since the redundancy version of the second repetition of the downlink data channel in the time domain is also this redundancy version, the second repetition of the downlink data channel in the time domain can include the complete system bits. Then the terminal device can also perform self-decoding based on the transport block transmitted by the second repetition of the downlink data channel in the time domain, so as to obtain the original information, thereby increasing the probability of correct decoding of the terminal device. If at least one first transmission resource may transmit downlink control information, or at least one first transmission resource does not transmit downlink control information, then there is a high probability that the first repetition of the downlink data channel in the time domain can include the complete system bits. Therefore, in this case, the redundancy version of the first repetition of the downlink data channel in the time domain can be the first redundancy version configured by the network device for this downlink data channel. For example, the transport block transmitted using the first version can include the system bits. And the other repetitions of the downlink data channel in the time domain do not have to all use this redundancy version. For example, the second repetition of the downlink data channel in the time domain can use the second redundancy version configured by the network device for this downlink data channel, and the third repetition of the downlink data channel in the time domain can use the third redundancy version configured by the network device for this downlink data channel, etc. This enables the technical solution of the embodiments of the present application to be better compatible with the prior art.

[0066] In an alternative embodiment, the first signaling is RRC signaling, MAC CE, or downlink control information.

[0067] In addition, the first signaling can also be implemented through other signaling, which is not limited in the embodiments of the present application.

[0068] In an alternative embodiment, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources among the plurality of first transmission resources that correspond to different aggregation levels.

[0069] If at least one transmission resource includes multiple first transmission resources, then among these multiple first transmission resources, there may be two first transmission resources corresponding to different aggregation levels. For example, among these multiple first transmission resources, different first transmission resources correspond to different aggregation levels, that is, the aggregation level corresponds one-to-one with the first transmission resource; or, among these multiple first transmission resources, there may be two first transmission resources corresponding to the same aggregation level, but there are also two first transmission resources corresponding to different aggregation levels.

[0070] In a sixth aspect, a sixth downlink transmission method is provided. This method can be executed by a network device or by a chip system that can implement the functions of the network device. Exemplarily, the network device is an access network device, such as a base station. The method includes: configuring resources for a downlink data channel for a terminal device, where the resources of the downlink data channel include at least one first transmission resource. When the at least one first transmission resource is multiple first transmission resources, the starting positions of the time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information; sending a first signaling to the terminal device, where the first signaling is used to indicate whether the at least one first transmission resource transmits downlink control information, and the first signaling is used to determine the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel.

[0071] In an optional implementation manner, the first signaling is used to determine the transmission mode of the downlink control information in the resources of the downlink data channel, including: when the first signaling indicates that the at least one first transmission resource transmits downlink control information, the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits; when the first signaling indicates monitoring downlink control information on the at least one first transmission resource, the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits. Here, the first number of bits is less than the second number of bits.

[0072] In an optional implementation manner, the first signaling is used to determine the transmission mode of the downlink data channel in the resources of the downlink data channel, including: when the first signaling indicates that the at least one first transmission resource transmits downlink control information, the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching method; or, when the first signaling indicates monitoring downlink control information on the at least one first transmission resource and the downlink control information is transmitted in the at least one first transmission resource, the mapping method adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the puncturing method.

[0073] In an alternative embodiment, the first signaling is used to determine the transmission mode of the downlink data channel in the resources of the downlink data channel, including: when the first signaling indicates that the at least one first transmission resource transmits downlink control information, the redundancy versions of the first repetition and the second repetition of the downlink data channel in the time domain are both the first redundancy version configured by the network device for the downlink data channel; or, when the first signaling indicates monitoring for downlink control information on the at least one first transmission resource, the redundancy version of the first repetition of the downlink data channel in the time domain is the first redundancy version configured by the network device for the downlink data channel, and the redundancy version of the second repetition in the time domain is the second redundancy version configured by the network device for the downlink data channel; or, when the first signaling indicates that the at least one first transmission resource does not transmit downlink control information, it is determined that the redundancy version of the first repetition of the downlink data channel in the time domain is the first redundancy version configured by the network device for the downlink data channel, and the redundancy version of the second repetition in the time domain is the second redundancy version configured by the network device for the downlink data channel.

[0074] In an alternative embodiment, the first signaling is RRC signaling, MAC CE, or downlink control information.

[0075] In an alternative embodiment, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources among the plurality of first transmission resources corresponding to different aggregation levels.

[0076] Regarding the technical effects brought by the sixth aspect or various alternative embodiments, reference may be made to the introduction of the technical effects of the fifth aspect or the corresponding embodiments.

[0077] A seventh aspect provides a communication device. The communication device may be the terminal device described in any one of the first to sixth aspects above, or an electronic device (such as a chip system) configured in the terminal device, or a larger device including the terminal device. The terminal device includes corresponding means or modules for performing the above method. For example, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module).

[0078] Among them, the processing unit is configured to determine the time-domain position of at least one first transmission resource in the resources of the downlink data channel. Wherein, when the at least one first transmission resource is a plurality of first transmission resources, the starting positions of the time-domain positions of the plurality of first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information. The processing unit is further configured to determine the conditions satisfied by the at least one first transmission resource according to the time-domain position of the at least one first transmission resource and the time-domain position of the resources of the downlink data channel. Wherein, the conditions satisfied by the at least one first transmission resource include a first condition or a second condition. The first condition is that the starting position of the time-domain position of the at least one first transmission resource is earlier than a first time-domain position, and the second condition is that the starting position of the time-domain position of the at least one first transmission resource is equal to or later than the first time-domain position. Wherein, the first time-domain position is the position obtained by offsetting the starting position of the time-domain position of the resources of the downlink data channel by a first time interval, and the first time-domain position is equal to or later than the starting position of the time-domain position of the resources of the downlink data channel. The processing unit is further configured to determine the downlink control information in the resources of the downlink data channel and / or the transmission mode of the downlink data channel according to the conditions satisfied by the at least one first transmission resource.

[0079] Alternatively, the processing unit is configured to determine the time-domain position of at least one first transmission resource in the resources of the downlink data channel. Wherein, when the at least one first transmission resource is a plurality of first transmission resources, the starting positions of the time-domain positions of the plurality of first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information. The processing unit is further configured to determine the conditions satisfied by the at least one first transmission resource according to the time-domain position of the at least one first transmission resource and the time-domain position of the resources of the downlink data channel. Wherein, the conditions satisfied by the at least one first transmission resource include a first condition or a second condition. The first condition is that all of the at least one first transmission resources are within the resources of the first repetition of the downlink data channel in the time domain, and the second condition is that not all of the at least one first transmission resources are within the resources of the first repetition of the downlink data channel in the time domain. The processing unit is further configured to determine the downlink control information in the resources of the downlink data channel and / or the transmission mode of the downlink data channel according to the conditions satisfied by the at least one first transmission resource.

[0080] Alternatively, the transceiver unit is configured to receive a first signaling from a network device, where the first signaling is used to indicate whether at least one first transmission resource transmits downlink control information. When the at least one first transmission resource includes multiple first transmission resources, start positions of time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information. The processing unit is configured to determine downlink control information in resources of the downlink data channel and / or a transmission mode of the downlink data channel according to the first signaling.

[0081] For another example, the communication device includes a processor coupled to a memory, configured to execute instructions in the memory to implement the method performed by the terminal device in any one of the first to sixth aspects above. Optionally, the communication device further includes other components, such as an antenna, an input / output module, an interface, etc. These components can be hardware, software, or a combination of software and hardware.

[0082] In an eighth aspect, a communication device is provided. The communication device may be the network device in any one of the first to sixth aspects above. The communication device has the functions of the above network device. The network device is, for example, a base station or a baseband device in a base station. In an optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module).

[0083] Wherein, the processing unit is configured to configure resources of a downlink data channel for a terminal device. The resources of the downlink data channel include at least one first transmission resource. When the at least one first transmission resource includes multiple first transmission resources, start positions of time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information. The processing unit is further configured to determine downlink control information in resources of the downlink data channel and / or a transmission mode of the downlink data channel according to a condition satisfied by the at least one first transmission resource. The at least one first transmission resource satisfies a first condition or a second condition. The condition satisfied by the at least one first transmission resource is determined by a time domain position of the at least one first transmission resource and a time domain position of the resources of the downlink data channel. The first condition is that a start position of the time domain position of the at least one first transmission resource is earlier than a first time domain position, and the second condition is that the start position of the time domain position of the at least one first transmission resource is equal to or later than the first time domain position. The first time domain position is a position obtained by offsetting a start position of the time domain position of the resources of the downlink data channel by a first time interval, and the first time domain position is equal to or later than the start position of the time domain position of the resources of the downlink data channel.

[0084] Alternatively, the processing unit is configured to configure resources for a downlink data channel of a terminal device. The resources of the downlink data channel include at least one first transmission resource. When there are multiple first transmission resources among the at least one first transmission resource, the starting positions of the time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information. The processing unit is further configured to determine the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel according to the conditions satisfied by the at least one first transmission resource, where the at least one first transmission resource satisfies a first condition or a second condition, and the conditions satisfied by the at least one first transmission resource are determined by the time domain position of the at least one first transmission resource and the time domain position of the resources of the downlink data channel. The first condition is that all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain, and the second condition is that not all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain.

[0085] Alternatively, the processing unit is configured to configure resources for a downlink data channel of a terminal device. The resources of the downlink data channel include at least one first transmission resource. When there are multiple first transmission resources among the at least one first transmission resource, the starting positions of the time domain positions of the multiple first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information. The transceiver unit is configured to send a first signaling to the terminal device, where the first signaling is used to indicate whether the at least one first transmission resource transmits downlink control information, and the first signaling is used to determine the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel.

[0086] In yet another alternative implementation, the communication device includes a storage unit and a processing unit. The processing unit is configured to be coupled to the storage unit and execute programs or instructions in the storage unit to enable the communication device to perform the functions of the above-mentioned network device.

[0087] In a ninth aspect, a computer-readable storage medium is provided. The computer-readable storage medium is configured to store computer programs or instructions, and when it is run, the methods performed by the terminal device or the network device in the above aspects are implemented.

[0088] In a tenth aspect, a computer program product including instructions is provided. When it runs on a computer, the methods described in the above aspects are implemented. Description of the Drawings

[0089] Figure 1Schematic diagram of the communication system according to the embodiment of the present application;

[0090] Figure 2 Schematic diagram of the data sending process;

[0091] Figure 3 Schematic diagram of a kind of resource for transmitting PDSCH;

[0092] Figure 4A Schematic diagram of an application scenario according to the embodiment of the present application;

[0093] Figure 4B Schematic diagram of another application scenario according to the embodiment of the present application;

[0094] Figure 4C Schematic diagram of yet another application scenario according to the embodiment of the present application;

[0095] Figure 5 Flowchart of a downlink transmission method provided by the embodiment of the present application;

[0096] Figure 6 Schematic diagram of a kind of transmission resource in the embodiment of the present application;

[0097] Figure 7 Flowchart of another downlink transmission method provided by the embodiment of the present application;

[0098] Figure 8 Schematic block diagram of a communication device provided by the embodiment of the present application;

[0099] Figure 9 Schematic block diagram of a terminal device provided by the embodiment of the present application;

[0100] Figure 10 Schematic block diagram of a network device provided by the embodiment of the present application. Detailed implementation manners

[0101] The technology provided by the embodiment of the present application can be applied to Figure 1 The communication system 10 shown. The communication system 10 includes one or more communication devices 30 (for example, terminal devices). These one or more communication devices 30 are connected to one or more core network devices via one or more access network devices 20 to realize communication between multiple communication devices. The communication system can be, for example, a communication system supporting 4G or 5G (sometimes also called new radio, NR) access technology, a cellular system related to the 3rd generation partnership project (3GPP), a communication system supporting the integration of multiple wireless technologies, or an evolved system for the future.

[0102] The following explains some terms in the embodiments of the present application to facilitate understanding by those skilled in the art.

[0103] In the embodiments of the present application, a terminal device is a device with wireless transceiver functions, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device (such as a communication module, a modem, or a chip system, etc.) built into the above devices. The terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: cellular communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine / machine-type communications (M2M / MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, and other scenarios. The terminal device is sometimes referred to as a user equipment (UE), a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user device, etc. For the convenience of description, the embodiments of the present application will take the terminal device as an example of a UE for illustration.

[0104] The network device in the embodiments of the present application includes, for example, an access network device and / or a core network device. The access network device is a device with wireless transceiver functions and is used to communicate with the terminal device. The access network device includes, but is not limited to, base stations (such as base transceiver stations (BTS), Node B, evolved Node B (eNodeB / eNB, or gNodeB / gNB)), transmission reception points (TRP), base stations evolved by the 3rd generation partnership project (3GPP) in the above communication system, access nodes in a wireless fidelity (WiFi) system, wireless relay nodes, wireless backhaul nodes, etc. The base station can be a macro base station, a micro base station, a pico base station, a small station, a relay station, etc. Multiple base stations can support the network of the same access technology mentioned above or the networks of different access technologies mentioned above. The base station can include one or more co-located or non-co-located transmission and reception points. The network device can also be a radio controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The network device can also be a server, a wearable device, or a vehicle-mounted device, etc. For example, the network device in vehicle to everything (V2X) technology can be a road side unit (RSU). The following takes the base station as an example to illustrate the access network device. Multiple network devices in the communication system can be base stations of the same type or base stations of different types. The base station can communicate with the terminal device or communicate with the terminal device through a relay station. The terminal device can communicate with multiple base stations in different access technologies. The core network device is used to implement functions such as mobility management, data processing, session management, policy, and charging. The names of the devices implementing the core network functions in systems of different access technologies can be different, and the present application does not limit this. Taking the 5G system as an example, the core network device includes an access and mobility management function (AMF), a session management function (SMF), or a user plane function (UPF), etc.

[0105] In the embodiments of the present application, the communication device for implementing the functions of a network device may be a network device or a device capable of supporting the network device to implement such functions, such as a chip system, and this device may be installed in the network device. In the technical solutions provided in the embodiments of the present application, the device for implementing the functions of a network device is taken as an example of a network device to describe the technical solutions provided in the embodiments of the present application.

[0106] In the embodiments of the present application, for the number of nouns, unless otherwise specified, it means "singular noun or plural noun", that is, "one or more". "At least one" means one or more, and "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally means that the front and back associated objects are in an "or" relationship. For example, A / B means: A or B. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c means: a, b, c, a and b, a and c, b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0107] The ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the size, content, order, time sequence, priority, or importance of multiple objects, etc. For example, the first condition and the second condition may be the same condition or different conditions, and such names do not indicate differences in the content, priority, or importance of these two conditions, etc.

[0108] The embodiments of the present application involve some basic concepts, such as aggregation level (AL), cyclic redundancy check (CRC), the mapping method of resources (such as rate matching or puncturing), and redundancy version (RV), etc. For the convenience of understanding, these basic concepts are briefly introduced before introducing the technical solutions provided in the embodiments of the present application.

[0109] 1. Aggregation level.

[0110] For example, in the NR system, a PDCCH may contain L = {1, 2, 4, 8, 16} control channel elements (CCEs), and here L is called the aggregation level of the PDCCH. A CCE contains 6 resource - element groups (REGs), and each REG corresponds to a resource block (RB) on one orthogonal frequency division multiplexing (OFDM) symbol. A PDCCH candidate may contain L = {1, 2, 4, 8, 16} CCEs. A PDCCH candidate may send the PDCCH of a UE or may not send it. The UE can monitor the PDCCH candidates to determine whether there is a PDCCH sent to the UE.

[0111] 2. CRC.

[0112] CRC code is a commonly used check code. CRC code can be used to detect whether there are transmission errors.

[0113] Generally, the information transmitter generates the CRC code according to the information to be transmitted, and then transmits the information to be transmitted and the CRC code together. The information receiver checks the received information and the received CRC code together. If the check is successful, it is considered that there is a transmission and this transmission is correct; if the check fails, it is considered that there is no transmission or there is a transmission error.

[0114] In addition, there are some scenarios where there are errors in the transmission, but the CRC check is successful; or there are also some scenarios where there is actually no such transmission, but the CRC check is correct. In these cases, it is considered that the CRC check is incorrect. The probability of the CRC check being incorrect is related to the length of the CRC code. Generally, the longer the CRC code, the smaller the probability of the check being incorrect.

[0115] 3. Transmission block sending process.

[0116] In the NR system, the data channel transmission block in the physical layer has to go through Figure 2 the encoding process shown. The data channel in the physical layer, such as the physical downlink shared channel (PDSCH). According to Figure 2It can be seen that the information sending end can add a CRC code to a transport block (TB), split the transport block with the added CRC code into one or more code blocks, and then add a CRC code to the split code blocks. Then, channel coding is performed on the code blocks with the added CRC code. After channel coding, the obtained information is mapped, for example, by rate matching. After that, code block concatenation is performed, and finally, the transmission can be completed.

[0117] 4. Rate matching and puncturing.

[0118] As Figure 3 shown, Figure 3 the time-frequency resources within the solid-line box are allocated for PDSCH transmission. However, due to some reasons, the time-frequency resources within the dashed-line box within the solid-line box cannot be used by PDSCH. Then, PDSCH can actually only be transmitted on the time-frequency resources within the solid-line box and outside the dashed-line box.

[0119] According to Figure 2 it can be seen that after channel coding, PDSCH needs to be mapped. There are two mapping methods for mapping PDSCH to the time-frequency resources within the solid-line box and outside the dashed-line box:

[0120] (1) Rate matching: It is considered that the air interface resources only include the time-frequency resources within the solid-line box and outside the dashed-line box. The encoded data is selected, and the selected data is modulated to exactly correspond to the time-frequency resources within the solid-line box and outside the dashed-line box. This is the process of rate matching.

[0121] (2) Puncturing: It is considered that the air interface resources include all the time-frequency resources within the solid-line box. The encoded data is selected, and the selected data is modulated to correspond to the time-frequency resources within the solid-line box. Then, the data within the dashed-line box is removed, that is, the modulation symbols that should have been mapped within the dashed-line box are set to 0, and the puncturing is completed. Among them, the modulation symbols are, for example, quadrature phase shift keying (QPSK), 16-symbol quadrature amplitude modulation (16QAM), 64QAM, or 256QAM, etc. Each modulation symbol carries several bits. Setting the modulation symbols that should have been mapped within the dashed-line box to 0 can be understood as not sending modulation symbols on the resources where modulation symbols should have been sent within the dashed-line box.

[0122] In this example, the information receiving end is the UE. If the UE definitely knows that there must be time-frequency resources within the dotted box that cannot be used for PDSCH transmission, the performance of rate matching will be better than puncturing. If the UE cannot determine whether there must be time-frequency resources within the solid box that cannot be used for PDSCH transmission, for example, the UE needs to perform blind detection of the PDCCH to determine whether there are time-frequency resources within the solid box that cannot be used for PDSCH transmission, then puncturing can ensure that regardless of whether the result of the UE's blind detection is correct or not, Figure 3 the mapping of the time-frequency resources outside the dotted box and inside the solid box in Figure 3 is correct. Therefore, when the blind detection at the information receiving end generates an error, the performance of puncturing will be better than that of rate matching.

[0123] 5. RV.

[0124] One PDSCH transmission can include multiple repetitions. Each repetition can be used to transmit the same transport block, but the RVs of the transport block transmitted by different repetitions may be different. For example, if the RVs configured by the network device for the PDSCH are {0, 2, 3, 1}, then the RV of the first repetition of the PDSCH in the time domain is 0, the RV of the second repetition in the time domain is 2, the RV of the third repetition in the time domain is 3, the RV of the fourth repetition in the time domain is 1, the RV of the fifth repetition in the time domain is 0, the RV of the sixth repetition in the time domain is 2, and so on. Here, the first repetition, the second repetition, etc. refer to the sorting in the order of time domain. For example, the time-domain position of the first repetition is earlier than that of the second repetition. Generally speaking, the RV of the first repetition of the PDSCH in the time domain contains system bits. If the information receiving end receives the transport block transmitted by the first repetition, it can perform self-decoding on the transport block. The so-called self-decoding means that according to this RV, it may be possible to decode successfully without combining other RVs. Among them, the information bits before mother code encoding are called system bits.

[0125] Considering that when DCI is sent through PDCCH, the UE may need to monitor PDCCH in a relatively large number of preset resources, which increases the power consumption of the UE and also increases the reception delay of DCI. Therefore, the embodiments of the present application propose that downlink control information can be transmitted through the resources of the downlink data channel, expanding the resources capable of transmitting downlink control information. In this way, the UE can monitor DCI in the resources of the downlink data channel scheduled for the UE, which can reduce the number of times the UE monitors PDCCH in the preset resources, reduce the power consumption of the UE, and also reduce the reception delay of DCI while ensuring the DCI transmission performance of the UE as much as possible. Moreover, the embodiments of the present application can determine the conditions satisfied by at least one first transmission resource capable of transmitting downlink control information in the resources of the downlink data channel according to the time domain position of the at least one first transmission resource, so as to determine the transmission mode of the downlink control information and / or the downlink data channel in the resources of the downlink data channel, which is equivalent to providing an implementation manner for the downlink control information to be transmitted in the resources of the downlink data channel.

[0126] Figure 4A FIG. shows a communication network architecture in the communication system 10 provided by the embodiments of the present application. The subsequent Figure 5 or Figure 7 The embodiments shown can all be applied to this architecture. Figure 4A The network devices included, for example, are the access network devices 20 included in the communication system 10, Figure 4A The terminal devices included, for example, are the communication devices 30 included in the communication system 10. The network devices and the terminal devices can communicate with each other.

[0127] Figure 4B FIG. shows another communication network architecture in the communication system 10 provided by the embodiments of the present application. As Figure 4BAs shown in the figure, the communication system includes a new core network (CN) and a radio access network (RAN). The network devices in the RAN (such as base stations) are, for example, the access network devices 20 in the communication system 10. The network devices in the RAN include a baseband device and a radio frequency device. The baseband device can be implemented by one or more nodes. The radio frequency device can be remotely implemented separately from the baseband device, integrated into the baseband device, or partially remotely implemented and partially integrated into the baseband device. The network devices in the RAN can include a CU and a DU. If there are multiple DUs, the multiple DUs can be centrally controlled by one CU. The CU and the DU can be divided according to the protocol layer functions of the wireless network they possess. For example, the functions of the protocol layers above the packet data convergence protocol (PDCP) layer are set in the CU, and the protocol layers below PDCP, such as the radio link control (RLC) layer and the media access control (MAC) layer, etc., are set in the DU. It should be noted that this division of protocol layers is only an example, and it can also be divided at other protocol layers. The radio frequency device can be remotely located and not placed in the DU, integrated into the DU, or partially remotely located and partially integrated into the DU. The embodiments of the present application do not impose any restrictions on this.

[0128] Figure 4C Another communication network architecture in the communication system 10 provided by the embodiments of the present application is shown. Relative to Figure 4B the architecture shown in the figure, the control plane (CP) and the user plane (UP) of the CU can also be separated and implemented as different entities, namely the control plane CU entity (CU-CP entity) and the user plane CU entity (CU-UP entity). In this network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU. The DU can directly encapsulate the signaling through the protocol layer without parsing it and pass it through to the terminal device or the CU. In this network architecture, the CU is divided as a network device on the RAN side. In addition, the CU can also be divided as a network device on the CN side. The embodiments of the present application do not limit this.

[0129] The method provided by the embodiments of the present application will be introduced below in conjunction with the accompanying drawings. In various embodiments of the present application, the downlink data channel is, for example, the downlink data channel of the physical layer, such as PDSCH, or it may also be the downlink data channel of other layers, such as the downlink data channel of the MAC layer, etc.; the downlink control channel is, for example, the downlink control channel of the physical layer, such as PDCCH, or the downlink control channel may also be the downlink control channel of other layers, such as the downlink control channel of the MAC layer, etc.; the downlink control information is, for example, the downlink control information of the physical layer, such as DCI, or the downlink control information may have other names. In the introduction of the following embodiments, it is assumed that the downlink control channel is PDCCH, the downlink data channel is PDSCH, and the downlink control information is DCI. Then, the resources of the downlink data channel are taken as an example of the resources of PDSCH. That is, the PDCCH described later can be replaced with the downlink control channel, the PDSCH described later can be replaced with the downlink data channel, and the DCI described later can be replaced with the downlink control information. In addition, in the accompanying drawings corresponding to the various embodiments of the present application, the steps represented by dashed lines are optional steps.

[0130] Please refer to Figure 5 to introduce a downlink transmission method provided by the embodiments of the present application.

[0131] S51. The network device configures resources for the PDSCH for the UE.

[0132] The resources of the PDSCH, for example, include one or more sets of transmission resources. This one or more sets of transmission resources can be used to transmit DCI, or in other words, this one or more sets of transmission resources are candidate resources for transmitting DCI. For example, this one or more sets of transmission resources include a set of transmission resources, and this set of transmission resources includes at least one first transmission resource. Among them, the starting positions of the time-domain positions of different first transmission resources in at least one first transmission resource are the same, and the ending positions of the time-domain positions of different first transmission resources may be the same or different, but the sizes of the time-frequency resources of different first transmission resources are different. The other transmission resources in the resources of the PDSCH other than this one or more sets of transmission resources are not used to transmit DCI, but can be used to transmit the PDSCH. Of course, although this one or more sets of transmission resources can be used to transmit DCI, they do not necessarily transmit DCI. It only means that this one or more sets of transmission resources have the ability or performance to transmit DCI.

[0133] Considering the aggregation levels corresponding to the PDCCH in the NR system, therefore, a set of transmission resources included in the resources of the PDSCH, which is one of the one or more sets of transmission resources, may include one transmission resource (or referred to as a block of transmission resources), or may include multiple transmission resources. Among them, one transmission resource can be understood as the smallest resource unit that can be used to transmit DCI. For example, at least one first transmission resource is one of the one or more sets of transmission resources, and the number of at least one first transmission resource can be 1 or greater than 1. If at least one transmission resource includes multiple first transmission resources, then among these multiple first transmission resources, there may be two first transmission resources corresponding to different aggregation levels. For example, different first transmission resources among these multiple first transmission resources correspond to different aggregation levels, that is, the aggregation level corresponds one-to-one with the first transmission resource; or, among these multiple first transmission resources, there may be two first transmission resources corresponding to the same aggregation level, but there are also two first transmission resources corresponding to different aggregation levels.

[0134] For example, reference can be made to Figure 6 , Figure 6 The solid box on the right in which represents the resources of the PDSCH. Figure 6 There are two rectangular blocks numbered a and b in. The starting positions of the time-domain positions of these two rectangular blocks are the same, while the sizes of the time-frequency resources are different. The ending position of the time-domain position of the rectangular block numbered b is later than the ending position of the time-domain position of the rectangular block numbered a. These two rectangular blocks are the two transmission resources included in a set of transmission resources that can be used to transmit DCI. This set of transmission resources is, for example, referred to as transmission resource group 1. In addition, there is a rectangular block numbered c, which represents one transmission resource included in a set of transmission resources that can be used to transmit DCI. For example, this set of transmission resources is referred to as transmission resource group 2. It can be seen that transmission resource group 2 includes one transmission resource; transmission resource group 1 includes two transmission resources, and the aggregation levels corresponding to these two transmission resources may be the same or different. Regarding Figure 6 The other content in will be explained later.

[0135] Alternatively, the resources of the PDSCH may not be configured by the network device either. For example, it can be predefined for the UE and the network device through a protocol, etc. Therefore, S51 is an optional step.

[0136] S52. The UE determines the time-domain position of at least one first transmission resource in the resources of the PDSCH. The UE can also determine the frequency-domain position of at least one first transmission resource, but this embodiment of the present application mainly discusses the time-domain position.

[0137] The UE determines the time domain position of at least one first transmission resource. One way to determine it is that the network device sends a signaling to the UE, and the UE receives the signaling from the network device. This signaling can indicate the time domain position of at least one first transmission resource, and then the UE can determine the time domain position of at least one first transmission resource according to this signaling. This signaling is also reflected in Figure 5 That is, Figure 5 It also includes S53. S53 means that the network device sends a signaling to the UE, and the UE receives the signaling from the network device. This signaling can be one signaling or multiple signalings.

[0138] For example, the network device sends a signaling to the UE. This signaling is, for example, a radio resource control (RRC) signaling, a media access control (MAC) control element (CE), or a DCI. This signaling can be used to schedule the resources of the PDSCH, and this signaling can indicate the time domain position of the transmission resources included in the resources of the PDSCH (optionally, it can also indicate the frequency domain position of the transmission resources included in the resources of the PDSCH). Then, the UE can determine the time domain position of at least one first transmission resource through this one signaling.

[0139] Another example is that the network device sends two signalings to the UE. One of the signalings is, for example, an RRC signaling, a MAC CE, or a DCI. This signaling can be used to schedule the resources of the PDSCH; the other signaling is, for example, an RRC signaling, a MAC CE, or a DCI (the types of these two signalings can be the same or different). This signaling can indicate the time domain position of the transmission resources included in the resources of the PDSCH (optionally, it can also indicate the frequency domain position of the transmission resources included in the resources of the PDSCH). Then, the UE can determine the time domain position of at least one first transmission resource through these two signalings.

[0140] For another example, the network device sends multiple signaling messages to the UE, and the number of signaling messages is greater than or equal to 3. One of the signaling messages is, for example, an RRC signaling message, a MAC CE, or a DCI, and this signaling message can be used to schedule the resources of the PDSCH. Another of the signaling messages is, for example, an RRC signaling message, a MAC CE, or a DCI (the types of these two signaling messages can be the same or different), and this signaling message can indicate the time domain position of a part of the transmission resources included in the resources of the PDSCH (optionally, it can also indicate the frequency domain position of this part of the transmission resources). Another of the signaling messages is, for example, an RRC signaling message, a MAC CE, or a DCI (the types of these three signaling messages can be the same or different), and this signaling message can indicate the time domain position of another part of the transmission resources included in the resources of the PDSCH (optionally, it can also indicate the frequency domain position of this part of the transmission resources). That is to say, the network device can indicate the time domain position of the transmission resources included in the resources of the PDSCH through two or more signaling messages, and then the UE can determine the time domain position of at least one first transmission resource based on these multiple signaling messages.

[0141] Alternatively, for the UE to determine the time domain position of at least one first transmission resource, another determination method that can be adopted is that the network device sends a signaling message to the UE, the UE receives the signaling message from the network device, and the UE can determine the time domain position of at least one first transmission resource based on this signaling message and the definition of the protocol.

[0142] For example, the network device sends a signaling message to the UE, and this signaling message is, for example, an RRC signaling message, a MAC CE, or a DCI, and this signaling message can be used to schedule the resources of the PDSCH. In addition, the time domain position of the transmission resources capable of transmitting DCI included in the resources of the PDSCH, etc., can be defined in advance for the UE and the network device through the protocol. For example, the offset of the start position of the transmission resources capable of transmitting DCI in the resources of the PDSCH defined in advance for the UE and the network device relative to the start position or the end position of the resources of the PDSCH, and it is stipulated that the end position of the transmission resources capable of transmitting DCI in the resources of the PDSCH is offset relative to the start position or the end position of the resources of the PDSCH. Then, based on the start position or the end position of the resources of the PDSCH and the offset defined in advance for the UE and the network device through the protocol, the UE can determine the time domain position of the transmission resources capable of transmitting DCI included in the resources of the PDSCH, and thus can determine the time domain position of at least one first transmission resource. The start position of the resources described here, for example, includes the start position of the time domain position and / or the start position of the frequency domain, and the end position of the resources, for example, includes the end position of the time domain position and / or the end position of the frequency domain.

[0143] In the above manner, the network device sends signaling to the UE, and the UE can determine the time domain position of at least one first transmission resource based on this signaling. If the network device also sends the first DCI to the UE, then the first DCI can be used as one of the signaling, for example, the first DCI can also be used to schedule the resources of the PDSCH. Figure 6 Taking this as an example; or, the first DCI may not be used as one of these signaling. The first DCI will be introduced later.

[0144] Alternatively, the UE can also use other methods to determine the time domain position of at least one first transmission resource, and the embodiments of this application do not limit this.

[0145] S54. The UE determines the conditions satisfied by at least one first transmission resource according to the time domain position of at least one first transmission resource and the time domain position of the resources of the PDSCH. In the embodiments of this application, the conditions satisfied by at least one first transmission resource may include a first condition and a second condition. Then the UE can determine that at least one first transmission resource satisfies the first condition or the second condition.

[0146] Regarding the division of the first condition and the second condition, there are different division methods. Correspondingly, there are also different determination methods for the UE to determine the conditions satisfied by at least one first transmission resource. Examples are introduced below.

[0147] 1. The first condition division method.

[0148] The first condition is that the starting position of the time domain position of at least one first transmission resource is earlier than the first time domain position; the second condition is that the starting position of the time domain position of at least one first transmission resource is equal to or later than the first time domain position. For the UE, in the case where the starting position of the time domain position of at least one first transmission resource is earlier than the first time domain position, it is determined that the first transmission resource satisfies the first condition, and in the case where the starting position of the time domain position of at least one first transmission resource is equal to or later than the first time domain position, it is determined that the first transmission resource satisfies the second condition.

[0149] Or, the first condition is that the starting position of the time domain position of at least one first transmission resource is equal to or earlier than the first time domain position; the second condition is that the starting position of the time domain position of at least one first transmission resource is later than the first time domain position. For the UE, in the case where the starting position of the time domain position of at least one first transmission resource is equal to or earlier than the first time domain position, it is determined that the first transmission resource satisfies the first condition, and in the case where the starting position of the time domain position of at least one first transmission resource is later than the first time domain position, it is determined that the first transmission resource satisfies the second condition.

[0150] Among them, the first time-domain position is the position obtained by offsetting the starting position of the time-domain position of the PDSCH resource by the first time interval. The first time interval may include 0, 1, or multiple time-domain resource units. The time-domain resource unit may be, for example, a slot, an OFDM symbol, or an OFDM symbol corresponding to the resource of one repetition of the PDSCH, etc. For example, the first time interval is 0, 1, or multiple slots, or the first time interval is 0, 1, or multiple OFDM symbols, or the first time interval is 0, 1, or multiple OFDM symbols corresponding to the repeated resources of the PDSCH, etc. If the first time interval is 0, the first time-domain position is equal to the starting position of the time-domain position of the PDSCH resource, and if the first time interval is greater than 0, the first time-domain position is later than the starting position of the time-domain position of the PDSCH resource. The first time interval can be configured by the network device. For example, the network device configures it for the UE through RRC signaling, MAC CE, DCI, etc.; alternatively, the first time interval can also be predefined for the UE and the network device through the protocol.

[0151] Taking Figure 6 the transmission resource group 1 in

[0152] 2. The second condition division method.

[0153] As introduced above, one PDSCH transmission may include multiple repetitions. Each repetition can be used to transmit the same transport block, but the RV of the transport block transmitted by different repetitions may be different. The transport block transmitted by the first repetition of the PDSCH in the time domain includes system bits. If the UE receives the transport block transmitted by the first repetition, it can perform self-decoding. Then, under the second condition division method, the first condition is that at least one first transmission resource is located within the resources of the first repetition of the PDSCH in the time domain; the second condition is that at least one first transmission resource is not all located within the resources of the first repetition of the PDSCH in the time domain. Equivalently, different conditions are divided according to whether self-decoding can be satisfied. Among them, the resources of the first repetition of the PDSCH in the time domain refer to the resources used to carry the first repetition of the PDSCH in the time domain.

[0154] As introduced above, there are several ways for the UE to determine the conditions satisfied by at least one first transmission resource. In addition, the UE can also use other methods to determine the conditions satisfied by at least one first transmission resource. Which method the UE uses to determine the conditions satisfied by at least one first transmission resource can be configured by the network device, or can also be predefined for the UE and the network device through protocols, etc.

[0155] S55. The UE determines the DCI in the PDSCH resource and / or the transmission mode of the PDSCH according to the conditions satisfied by the time domain position of at least one first transmission resource. Or rather, the UE determines the transmission mode of the DCI in at least one transmission resource and / or the transmission mode of the PDSCH in the PDSCH resource according to the conditions satisfied by the time domain position of at least one first transmission resource. For example, according to the conditions satisfied by at least one first transmission resource, the UE can determine the transmission mode of the DCI in the PDSCH resource; or, according to the conditions satisfied by at least one first transmission resource, the UE can determine the transmission mode of the PDSCH in the PDSCH resource; or, according to the conditions satisfied by at least one first transmission resource, the UE can determine the transmission modes of the DCI and the PDSCH in the PDSCH resource. Herein, the DCI in the PDSCH resource described herein is the DCI in the first transmission resource.

[0156] Depending on the different conditions satisfied by at least one first transmission resource, the transmission mode of the DCI in the PDSCH resource will be different, and the transmission mode of the PDSCH in the PDSCH resource will also be different. The following will be introduced separately.

[0157] 1. At least one first transmission resource satisfies the first condition.

[0158] When at least one first transmission resource satisfies the first condition, the UE can determine the DCI in the PDSCH resource and / or the transmission mode of the PDSCH. First, the following will introduce how the UE determines the transmission mode of the DCI in the PDSCH resource.

[0159] 1. The transmission mode of the DCI in the PDSCH resource when at least one first transmission resource satisfies the first condition.

[0160] The transmission mode of DCI in the resources of PDSCH can include multiple aspects. For example, one aspect is whether DCI is transmitted in the resources of PDSCH. For at least one first transmission resource, it is necessary to determine whether DCI is transmitted in at least one first transmission resource. Since DCI may be missed or falsely detected, affecting the performance of PDSCH, in order to improve the performance of PDSCH, the UE can use a DCI to determine the transmission mode of DCI in the resources of PDSCH. For example, the embodiments of this application also include S56 that occurs before S55. The network device sends the first DCI to the UE. Correspondingly, the UE receives the first DCI from the network device. S56 is an optional step, that is, the network device does not necessarily send the first DCI. The first DCI can be carried in the PDCCH, or the first DCI can also be carried in the resources of PDSCH that include at least one first transmission resource. For example, reference can be made to Figure 6 shown Figure 6 where the first DCI is carried in the PDCCH as an example. In Figure 6 the starting position of the time domain position of the first DCI is earlier than or equal to the starting position of the time domain position of PDSCH.

[0161] When at least one first transmission resource meets the first condition, the first DCI may indicate that at least one first transmission resource transmits DCI, or indicate that at least one first transmission resource does not transmit DCI. For example, the first DCI includes first indication information, and the first indication information is carried by a first indication field. The first indication field may be an original field included in the first DCI, or may also be a field newly added in the first DCI in the embodiments of the present application. For example, when at least one first transmission resource meets the first condition, the first indication information indicates that at least one first transmission resource transmits DCI, or indicates that at least one first transmission resource does not transmit DCI. That is to say, if at least one first transmission resource meets the first condition, it indicates that the distance between the time domain position of at least one first transmission resource and the time domain position of the first DCI is relatively close. For example, it indicates that the distance between the time domain position of at least one first transmission resource and the time domain position of the first DCI is less than a first threshold. Then when the network device sends the first DCI, it should be able to clearly determine whether DCI will be sent in at least one first transmission resource. Therefore, the first indication information can give a relatively clear indication, reducing the blind detection process of the UE. Among them, the first threshold may be configured by the network device, or may also be predefined for the UE and the network device through a protocol, etc. If the resources of the PDSCH include other transmission resources in addition to at least one first transmission resource, whether DCI is transmitted in these transmission resources can be indicated by the first DCI. Then the first DCI may include multiple indication information, and the indication information corresponds to a transmission resource group one by one. One indication information is used to indicate whether the corresponding transmission resource group transmits DCI. Here, at least one first transmission resource is taken as an example, and thus the first indication information included in the first DCI is taken as an example. For other transmission resource groups, the implementation methods are similar.

[0162] It should be noted that if the number of at least one first transmission resource is greater than 1, then even if the first indication information indicates that at least one first transmission resource transmits DCI, it does not clearly indicate which one of the at least one first transmission resources DCI will be transmitted in. Therefore, for the UE, it still needs to blindly detect DCI in each of the at least one first transmission resources. And if the number of at least one first transmission resource is 1, then the UE is equivalent to clearly knowing the specific position of the DCI, and the UE can avoid blind detection and instead receive DCI in this first transmission resource. Of course, if the first indication information indicates that at least one first transmission resource does not transmit DCI, the UE does not need to monitor DCI in at least one first transmission resource. Thus, it can be seen that through the first indication information, the number of blind detections of the UE is reduced, saving the power consumption of the UE.

[0163] The transmission mode of DCI in the resources of PDSCH can include multiple aspects. For example, another aspect is the number of CRC bits of DCI.

[0164] For example, when at least one first transmission resource meets the first condition and the network device instructs at least one first transmission resource to transmit DCI, the number of CRC bits of the DCI transmitted in at least one first transmission resource is the first number of bits. The network device instructs at least one first transmission resource to transmit DCI. For example, one indication method is that the network device sends a first signaling to the terminal device. The first signaling includes second indication information, and the second indication information can indicate whether at least one first transmission resource transmits DCI or not. Then the network device can indicate that at least one first transmission resource transmits DCI through the second indication information. Or, the network device instructs at least one first transmission resource to transmit DCI. For example, another indication method is that the network device sends a first signaling to the terminal device, and the first signaling does not include the second indication information. The first signaling can indicate whether at least one first transmission resource transmits DCI or not through the behavior (or event) of not including the second indication information. The first signaling is, for example, the aforementioned first DCI, or it can also be a high-layer signaling, such as an RRC signaling or a MAC CE, etc. If the first signaling is a high-layer signaling, then before S55, the network device can send the high-layer signaling to the UE. Correspondingly, the UE receives the high-layer signaling from the network device. If the first signaling is a high-layer signaling, the network device can send the first DCI to the UE or not send the first DCI. If the first signaling is the first DCI, then the second indication information and the first indication information can be the same indication information.

[0165] Or, when at least one first transmission resource meets the first condition, the number of CRC bits of the DCI transmitted in at least one first transmission resource is the first number of bits. In this way, as long as at least one first transmission resource meets the first condition, the UE determines that the number of CRC bits of the DCI transmitted in at least one first transmission resource is the first number of bits, that is, the UE does not need to judge other conditions, and the implementation method is relatively simple for the UE.

[0166] For another example, when at least one first transmission resource meets the first condition and the network device indicates that DCI may be transmitted on at least one first transmission resource (or the network device indicates to monitor DCI on at least one first transmission resource), the number of CRC bits of the DCI transmitted on at least one first transmission resource is the second number of bits. The network device indicates to monitor DCI on at least one first transmission resource. For example, one indication method is that the network device sends a first signaling to the terminal device. The first signaling includes third indication information, and the third indication information can indicate that DCI is transmitted on at least one first transmission resource, or indicate that DCI is not transmitted on at least one first transmission resource, or indicate to monitor DCI on at least one first transmission resource. Then the network device can indicate to monitor DCI on at least one first transmission resource through the third indication information. Or, the network device indicates to monitor DCI on at least one first transmission resource. For example, another indication method is that the network device sends a first signaling to the terminal device, and the first signaling does not include the third indication information. The first signaling can indicate that DCI is transmitted on at least one first transmission resource, or indicate that DCI is not transmitted on at least one first transmission resource, or indicate to monitor DCI on at least one first transmission resource through the behavior (or event) of not including the third indication information. The first signaling is, for example, the aforementioned first DCI, or it can also be a high-layer signaling, and the high-layer signaling is, for example, an RRC signaling or a MAC CE, etc. If the first signaling is a high-layer signaling, then before S55, the network device can send the high-layer signaling to the UE. Correspondingly, the UE receives the high-layer signaling from the network device. The third indication information and the aforementioned second indication information can be the same indication information, then the second indication information can also indicate to monitor DCI on at least one first transmission resource; or, the third indication information and the second indication information are different indication information. If the first signaling is a high-layer signaling, then the network device can send the first DCI to the UE, or can also not send the first DCI. If the first signaling is the first DCI, then the third indication information and the first indication information can be the same indication information, or can also be different indication information.

[0167] If it is known for sure that a set of transmission resources will transmit DCI, the number of CRC bits can be less; if it is not known for sure whether a set of transmission resources will transmit DCI, the number of CRC bits needs to be more to reduce the probability of incorrect DCI monitoring. Therefore, optionally, the first number of bits can be less than the second number of bits. The first number of bits and the second number of bits can be configured by the network device, for example, or can also be predefined for the UE and the network device through a protocol.

[0168] Of course, if the first signaling indicates that the first transmission resource does not transmit DCI, then there is no concept of the number of CRC bits in at least one first transmission resource.

[0169] As introduced above, how the UE determines the transmission mode of DCI in the resource of PDSCH is described. Next, how the UE determines the transmission mode of PDSCH in the resource of PDSCH is described.

[0170] 2. When at least one first transmission resource meets the first condition, the transmission mode of PDSCH in the resource of PDSCH.

[0171] The transmission mode of PDSCH in the resource of PDSCH may include multiple aspects. For example, one aspect is the mapping mode adopted by the resource of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource.

[0172] For example, when at least one first transmission resource meets the first condition and the network device indicates that at least one first transmission resource transmits DCI, the mapping mode adopted by the resource of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource is the rate matching mode. Regarding how the network device indicates and other content, reference can be made to the previous text. If it is known that a group of transmission resources will transmit DCI, then the performance of rate matching is better than puncturing. Therefore, if it is known that at least one first transmission resource transmits DCI, the mapping mode adopted by the resource of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource can be the rate matching mode. Among them, if the number of at least one first transmission resource is 1, or at least one first transmission resource is a first transmission resource, then the first transmission resource that transmits DCI in the at least one first transmission resource is this one first transmission resource; or, if the number of at least one first transmission resource is greater than 1, then DCI will be transmitted on some of the first transmission resources among these multiple first transmission resources, then the first transmission resource that transmits DCI in the at least one first transmission resource refers to the first transmission resource that transmits DCI among these multiple first transmission resources. For example, one of the at least one first transmission resources may be used to transmit DCI, and the remaining first transmission resources do not transmit DCI.

[0173] Another example is that when at least one first transmission resource meets the first condition, the mapping mode adopted by the resource of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource is the rate matching mode. In this mode, as long as at least one first transmission resource meets the first condition, the UE determines that the mapping mode adopted by the resource of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource is the rate matching mode, that is, the UE does not need to judge other conditions, and the implementation method is relatively simple for the UE.

[0174] Another aspect of the transmission mode of the PDSCH in the resources of the PDSCH is, for example, the RV adopted for the repetition of the PDSCH in the resources of the downlink data channel.

[0175] For example, when at least one first transmission resource satisfies the first condition and the network device instructs at least one first transmission resource to transmit DCI, the RVs of both the first repetition and the second repetition of the PDSCH in the time domain are the first version. As introduced above, the network device can configure the RV for the PDSCH. Then the first version is, for example, the first RV configured by the network device for this PDSCH. For example, if the RV configured by the network device for the PDSCH through higher layer signaling is {0, 2, 3, 1}, then RV0 is the first RV configured by the network device for this PDSCH, RV2 is the second RV configured by the network device for this PDSCH, RV3 is the third RV configured by the network device for this PDSCH, and RV1 is the fourth RV configured by the network device for this PDSCH. For example, the first condition and the second condition are divided according to the second condition division method introduced above, that is, when at least one first transmission resource is all within the resources of the first repetition of the PDSCH in the time domain, at least one first transmission resource satisfies the first condition. Then conversely, when at least one first transmission resource satisfies the first condition, at least one first transmission resource is all within the resources of the first repetition of the PDSCH in the time domain. In this case, when at least one first transmission resource transmits DCI, the DCI will occupy a certain number of bits, which may cause the first repetition to be unable to transmit the complete system bits. Then for the UE, if it receives a transport block that does not include the complete system bits, it may not be able to perform self-decoding and thus cannot obtain the original information.

[0176] Therefore, in the embodiments of the present application, the RVs of the first repetition and the second repetition of the PDSCH in the time domain can be the first version. The first version is, for example, RV0, or it can also be other versions. For example, the transport block transmitted using the first version may include system bits. Then, even if the first repetition of the PDSCH in the time domain cannot include complete system bits due to the transmission of DCI, since the RV of the second repetition of the PDSCH in the time domain is also the first version, the second repetition of the PDSCH in the time domain can include complete system bits. Then, the UE can also perform self-decoding based on the transport block transmitted by the second repetition of the PDSCH in the time domain, thereby obtaining the original information, which improves the probability of correct decoding by the UE. Of course, for greater reliability, the RV versions of more repetitions of the PDSCH in the time domain can also be the first version. For example, the RV of the third repetition of the PDSCH in the time domain can also be the first version, etc. In addition to using repetitions of the first version, other repetitions of the PDSCH in the time domain can use other versions. For example, the RVs of the first repetition and the second repetition of the PDSCH in the time domain are the first version, the RV of the third repetition of the PDSCH in the time domain can be the second RV configured by the network device for this PDSCH, and the fourth repetition of the PDSCH can be the third RV configured by the network device for this PDSCH, and so on. What exactly the second RV, the third RV, etc. are is not limited in the embodiments of the present application.

[0177] The situation where at least one first transmission resource satisfies the first condition is introduced above. Now, the situation where at least one first transmission resource satisfies the second condition is introduced.

[0178] II. At least one first transmission resource satisfies the second condition.

[0179] 1. The transmission mode of DCI in the resources of the PDSCH when at least one first transmission resource satisfies the second condition.

[0180] The transmission mode of DCI in the resources of the PDSCH can include multiple aspects. For example, one aspect is whether DCI is transmitted in the resources of the PDSCH. Similarly, the UE can determine this with the help of the first DCI. For the introduction of the first DCI, reference can be made to the foregoing text.

[0181] When at least one first transmission resource meets the second condition, the first DCI indicates that at least one first transmission resource transmits DCI, or indicates to monitor DCI on at least one first transmission resource. For example, the first DCI may include first indication information. For the introduction of the first indication information, reference can be made to the foregoing text. For example, when at least one first transmission resource meets the second condition, the first indication information may indicate that at least one first transmission resource transmits DCI, or indicates to monitor DCI on at least one first transmission resource. If it indicates to monitor DCI on at least one first transmission resource, it means that DCI may or may not be transmitted, and the UE needs to perform blind detection to determine. For example, if the first transmission resource meets the second condition, it indicates that the distance between the time domain position of at least one first transmission resource and the time domain position of the first DCI is relatively far. When the network device sends the first DCI (for example, at time t0 in Figure 6 ), it may be able to determine whether DCI will be sent in at least one first transmission resource, or may not be able to determine whether DCI will be sent in at least one first transmission resource (for example, the network device may need to wait until Figure 6 at time t1 to determine whether DCI will be sent in at least one first transmission resource). Therefore, when it cannot be determined, the first DCI can indicate to monitor DCI on at least one first transmission resource instead of indicating that at least one first transmission resource does not transmit DCI. Through this indication method, considering the different DCI generation times, the probability of the UE making an error in CRC detection is reduced.

[0182] Alternatively, when at least one first transmission resource meets the second condition, the first DCI may not include the first indication information. The first indication information may indicate that at least one first transmission resource transmits DCI, or indicates to monitor DCI on at least one first transmission resource, or indicates that at least one first transmission resource does not transmit DCI. Then, the fact that the first DCI does not include the first indication information means that the first DCI does not indicate that at least one first transmission resource transmits downlink control information, does not indicate that at least one first transmission resource does not transmit downlink control information, and does not indicate to monitor downlink control information on at least one first transmission resource. That is, the first DCI does not indicate whether at least one first transmission resource transmits DCI. For example, when the network device sends the first DCI, it may not be able to determine whether DCI will be sent in at least one first transmission resource. Therefore, the first DCI does not indicate whether at least one first transmission resource transmits DCI. For the UE, if the first DCI does not indicate whether at least one first transmission resource transmits DCI, or in other words, if the first DCI does not include the first indication information, the UE needs to perform blind detection on at least one first transmission resource.

[0183] Among them, if the first DCI indicates that at least one first transmission resource transmits DCI, whether the UE should blindly detect the DCI can refer to the previous introduction. If the first DCI indicates to monitor the DCI on at least one first transmission resource, the UE needs to blindly detect the DCI in at least one first transmission resource, thereby reducing the probability of the UE missing the detection of the DCI. If the first DCI indicates that at least one first transmission resource does not transmit DCI, the UE does not need to blindly detect the DCI in at least one first transmission resource.

[0184] The transmission mode of the DCI in the resources of the PDSCH can include multiple aspects. For example, another aspect is the number of CRC bits of the DCI.

[0185] For example, when at least one first transmission resource meets the second condition, the number of CRC bits of the DCI transmitted in at least one first transmission resource is the second number of bits. In this case, the UE does not need to make a judgment with the help of other information. As long as at least one first transmission resource meets the second condition, it can be determined that the number of CRC bits of the DCI transmitted in at least one first transmission resource is the second number of bits. Since this method does not require too much information, the determination method is relatively simple.

[0186] Or, when at least one first transmission resource meets the second condition and the network device indicates that at least one first transmission resource transmits DCI, the number of CRC bits of the DCI transmitted in at least one first transmission resource is the first number of bits; or, when at least one first transmission resource meets the second condition and the network device indicates that at least one first transmission resource may transmit DCI, the number of CRC bits of the DCI transmitted in at least one first transmission resource is the second number of bits. Regarding how the network device indicates and other contents, reference can be made to the previous text. Determining the number of CRC bits of the DCI with the help of more information can make the determination result more accurate.

[0187] If it is known for sure that DCI is transmitted in a group of transmission resources, the number of CRC bits can be less; if it is not known for sure whether DCI is transmitted in a group of transmission resources, the number of CRC bits needs to be more to reduce the probability of incorrect DCI monitoring. Therefore, optionally, the first number of bits can be less than the second number of bits. For more introduction about the first number of bits and the second number of bits, reference can be made to the previous text.

[0188] As introduced above, how the UE determines the transmission mode of the DCI in the resources of the PDSCH is described. Next, how the UE determines the transmission mode of the PDSCH in the resources of the PDSCH will be described.

[0189] 2. The transmission mode of the PDSCH in the resources of the PDSCH when at least one first transmission resource meets the second condition.

[0190] The transmission mode of PDSCH in the resources of PDSCH may include multiple aspects. For example, in one aspect, the mapping method adopted by the resources of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource. Regarding how to understand the first transmission resource that transmits DCI in at least one first transmission resource for the resources of PDSCH, relevant introductions can be referred to the previous text.

[0191] For example, when at least one first transmission resource meets the second condition, the mapping method adopted by the resources of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource is the puncturing method. Regarding how the network device indicates and other content, it can be referred to the previous text. In this case, the UE does not need to rely on other information for judgment. As long as at least one first transmission resource meets the second condition, it can be determined that the mapping method adopted by the resources of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource is the puncturing method. Since this method does not need to rely on too much information, the determination method is relatively simple. And at this time, the UE cannot determine whether at least one first transmission resource transmits DCI, but needs to determine whether at least one first transmission resource transmits DCI through blind detection of PDCCH. Then, according to the previous introduction, the performance of puncturing will be better than that of rate matching.

[0192] Alternatively, when at least one first transmission resource meets the second condition and the network device instructs at least one first transmission resource to transmit DCI, the mapping method of the PDSCH resource for the first transmission resource that transmits DCI among at least one first transmission resource is the rate matching method; or, when at least one first transmission resource meets the second condition and the network device instructs to monitor DCI on at least one first transmission resource, the mapping method of the PDSCH resource for the first transmission resource that transmits DCI among at least one first transmission resource is the puncturing method. If it is known for sure that a set of transmission resources will transmit DCI, the performance of rate matching is better than that of puncturing. Therefore, if it is known for sure that at least one first transmission resource transmits DCI, the mapping method of the PDSCH resource for the first transmission resource that transmits DCI among at least one first transmission resource can be the rate matching method. If it is not known for sure whether at least one first transmission resource transmits DCI, for example, it is necessary to know whether at least one first transmission resource transmits DCI through blind detection, the puncturing method can ensure that the mapping of the resources used to transmit PDSCH in the PDSCH resource is correct regardless of whether the result of the blind detection is correct or not. Therefore, when the blind detection may produce errors, the performance of puncturing is better than that of rate matching. Therefore, if the network device instructs to monitor DCI on at least one first transmission resource, the mapping method of the PDSCH resource for the first transmission resource that transmits DCI among at least one first transmission resource is the puncturing method. Regarding how the network device indicates and other contents, reference can be made to the previous text.

[0193] Another aspect of the transmission mode of PDSCH in the PDSCH resource is, for example, the RV used for the repetition of PDSCH in the PDSCH resource.

[0194] For example, when at least one first transmission resource meets the second condition and the network device instructs at least one first transmission resource to transmit DCI, the RV of the first repetition of the PDSCH in the time domain is the first version, and the RV of the second repetition of the PDSCH in the time domain is the second version. For example, the first condition and the second condition are divided according to the second condition division method introduced above, that is, when at least one first transmission resource is not all located within the resources of the first repetition of the PDSCH in the time domain, at least one first transmission resource meets the second condition. Then conversely, when at least one first transmission resource meets the second condition, at least one first transmission resource is not all located within the resources of the first repetition of the PDSCH in the time domain. In this case, even if at least one first transmission resource transmits DCI, it may not necessarily affect the first repetition of the PDSCH in the time domain, that is, the first repetition of the PDSCH in the time domain may still be able to include complete information bits. Therefore, in this case, the RV of the first repetition of the PDSCH in the time domain can be made the first version, and the first version is, for example, RV0, or it can also be other versions. For example, the transport block transmitted using the first version can include system bits. And the other repetitions of the PDSCH in the time domain do not have to all use the first version. For example, the second repetition of the PDSCH in the time domain can use the second RV configured by the network device for this PDSCH, and the third repetition of the PDSCH in the time domain can use the third RV configured by the network device for this PDSCH, etc. For the introduction of the first version and the RV configured by the network device for this PDSCH, etc., reference can be made to the above text.

[0195] For the network device, it can also determine the DCI in the resources of the PDSCH and / or the transmission mode of the PDSCH according to the conditions met by at least one first transmission resource. The determination method of the network device is the same as that of the UE, and will not be elaborated here.

[0196] In the embodiments of this application, the network device can send the first DCI to indicate whether DCI is transmitted in at least one first transmission resource. Then the UE can determine the conditions met by at least one first transmission resource according to the time domain position of at least one first transmission resource, and further determine the content indicated by the first DCI, which can reduce the probability of CRC detection error of the UE. Moreover, the first DCI can also indicate to monitor the transmission of DCI on at least one first transmission resource, that is, it can indicate uncertain situations, which takes into account the different generation times of DCI.

[0197] Embodiments of the present application can determine the number of CRC bits of the DCI monitored in at least one first transmission resource according to the conditions satisfied by the at least one first transmission resource. If the UE determines that the at least one first transmission resource transmits DCI, the determined number of CRC bits can be relatively small, thereby reducing the CRC overhead.

[0198] In addition, embodiments of the present application can determine the influence of the DCI transmission on the PDSCH mapping mode according to the conditions satisfied by the at least one first transmission resource, improving the PDSCH transmission performance.

[0199] Moreover, embodiments of the present application can also determine the RV version of the PDSCH repetition according to the conditions satisfied by the at least one first transmission resource, improving the PDSCH performance.

[0200] Please refer to Figure 7 , which introduces another downlink transmission method provided by embodiments of the present application. In this method, the UE can determine the DCI in the PDSCH resource and / or the PDSCH transmission mode without determining the conditions satisfied by the transmission resources.

[0201] S71. The network device configures resources for the PDSCH for the UE.

[0202] The resources of the PDSCH include, for example, one or more sets of transmission resources. This one or more sets of transmission resources can be used to transmit DCI, or rather, this one or more sets of transmission resources are candidate resources for transmitting DCI. For example, this one or more sets of transmission resources include a set of transmission resources, and this set of transmission resources includes at least one first transmission resource. Among them, the start positions of the time domain positions of different first transmission resources in the at least one first transmission resource are the same, and the end positions of the time domain positions of different first transmission resources may be the same or different, but the sizes of the time-frequency resources of different first transmission resources are different.

[0203] For more content about S71, reference can be made to Figure 5 S51 in the embodiment shown. Similarly, S71 is also an optional step.

[0204] S72. The network device sends a first signaling. Correspondingly, the UE receives the first signaling from the network device. The first signaling is, for example, an RRC signaling, a MAC CE, or a DCI, etc.

[0205] For example, the first signaling may indicate that at least one first transmission resource transmits DCI, or the first signaling may indicate that at least one first transmission resource does not transmit DCI, or the first signaling may indicate to monitor DCI on at least one first transmission resource. For example, if the distance between the time domain position of the network device transmitting the first DCI and the time domain position of at least one first transmission resource is relatively close, then when the network device transmits the first DCI, it can already determine whether at least one first transmission resource will transmit DCI. In this case, the first signaling may indicate that at least one first transmission resource transmits DCI or does not transmit DCI; if the distance between the time domain position of the network device transmitting the first DCI and the time domain position of at least one first transmission resource is relatively close, but the network device cannot determine whether DCI will be transmitted within at least one first transmission resource when transmitting the first DCI, then the first signaling may indicate to monitor DCI on at least one first transmission resource.

[0206] The first signaling indicates whether at least one first transmission resource transmits DCI. One implementation is that the first signaling includes first indication information, and the first indication information indicates whether at least one first transmission resource transmits DCI. The first indication information is carried by a first indication field, and the first indication field may be an original field included in the first signaling, or may also be a newly added field in the first signaling in the embodiments of the present application. The first indication information may indicate that at least one first transmission resource transmits DCI, or indicate that at least one first transmission resource does not transmit DCI, or indicate to monitor DCI on at least one first transmission resource. If the resources of the PDSCH include other transmission resources in addition to at least one first transmission resource, then whether DCI is transmitted in these transmission resources can all be indicated by the first signaling. Then the first signaling may include multiple indication information, and the indication information corresponds to the transmission resource groups one by one. One indication information is used to indicate whether the corresponding transmission resource group transmits DCI. Here, at least one first transmission resource is taken as an example, so the first indication information included in the first signaling is taken as an example. For other transmission resource groups, the implementation methods are similar.

[0207] Alternatively, the first signaling indicates whether at least one first transmission resource transmits DCI. In another implementation, the first signaling does not include the first indication information, and the behavior (or event) that the first signaling does not include the first indication information indicates whether at least one first transmission resource transmits DCI. The first signaling does not include the first indication information, and it can indicate that at least one first transmission resource transmits DCI, or indicate that at least one first transmission resource does not transmit DCI, or indicate to monitor DCI on at least one first transmission resource. If the resources of the PDSCH include other transmission resources in addition to at least one first transmission resource, then whether DCI is transmitted in these transmission resources can all be indicated by the first signaling. Then the first signaling can indicate whether the corresponding transmission resource group transmits DCI by not including the indication information, and the indication information corresponds one by one to the transmission resource group. Here, at least one first transmission resource is taken as an example, so the first signaling not including the first indication information is taken as an example. For other transmission resource groups, the implementation methods are similar.

[0208] S73. The UE determines the DCI in the resources of the PDSCH and / or the transmission mode of the PDSCH according to the first signaling. For example, the UE can determine the transmission mode of the DCI in the resources of the PDSCH according to the first signaling; or, the UE can determine the transmission mode of the PDSCH in the resources of the PDSCH according to the first signaling; or, the UE can determine the DCI and the transmission mode of the PDSCH in the resources of the PDSCH according to the first signaling. Among them, the DCI in the resources of the PDSCH described here is the DCI in at least one first transmission resource.

[0209] The UE determines the transmission mode of the DCI in the resources of the PDSCH according to the first signaling, and the UE determines the transmission mode of the PDSCH in the resources of the PDSCH according to the first signaling. The following introduces these two processes separately.

[0210] 1. The UE determines the transmission mode of the DCI in the resources of the PDSCH according to the first signaling.

[0211] The transmission mode of the DCI in the resources of the PDSCH can include multiple aspects. For example, one aspect is whether the resources of the PDSCH transmit DCI. For this aspect, the first signaling has already indicated, so the UE can determine whether at least one first transmission resource transmits DCI according to the first signaling. For example, if the first signaling indicates that at least one first transmission resource transmits DCI, then the UE determines that the first transmission resource transmits DCI; or, if the first signaling indicates that at least one first transmission resource does not transmit DCI, then the UE determines that the first transmission resource does not transmit DCI; or, if the first signaling indicates to monitor DCI on at least one first transmission resource, then the UE determines that the first transmission resource may transmit DCI. Regarding the behavior of whether the UE performs blind detection or not in the above several situations, reference can be made toFigure 5 Introduction of the illustrated embodiment.

[0212] Another aspect of the transmission mode of DCI in the resources of PDSCH is, for example, the number of CRC bits of the DCI transmitted in the resources of PDSCH.

[0213] For example, when the first signaling indicates that at least one first transmission resource transmits DCI, the number of CRC bits of the DCI transmitted in at least one first transmission resource is the first number of bits; or, when the first signaling indicates monitoring DCI on at least one first transmission resource, the number of CRC bits of the DCI transmitted in at least one first transmission resource is the second number of bits. Of course, if the first signaling indicates that at least one first transmission resource does not transmit DCI, then there are no CRC bits in at least one first transmission resource. In this case, PDSCH can be normally sent on the resources of PDSCH. If it is known for sure that DCI is transmitted in a set of transmission resources, the number of CRC bits can be less; if it is not known for sure whether DCI is transmitted in a set of transmission resources, the number of CRC bits needs to be more to reduce the probability of incorrect DCI monitoring. Therefore, optionally, the first number of bits can be less than the second number of bits. The first number of bits and the second number of bits can be configured by the network device, or can also be predefined for the UE and the network device through the protocol.

[0214] 2. The UE determines the transmission mode of PDSCH in the resources of PDSCH according to the first signaling.

[0215] The transmission mode of PDSCH in the resources of PDSCH can include multiple aspects. For example, one aspect is the mapping mode adopted by the resources of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource. Regarding the understanding of the resources of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource, reference can be made to Figure 5 the relevant introduction of the illustrated embodiment.

[0216] For example, when the first signaling indicates that at least one first transmission resource transmits DCI, the mapping mode adopted by the resources of PDSCH for the first transmission resource that transmits DCI in at least one first transmission resource is the rate matching mode; or, when the first signaling indicates monitoring DCI on at least one first transmission resource and DCI is detected in at least one first transmission resource, the mapping mode adopted by the resources of PDSCH for the resource that transmits DCI in at least one first transmission resource is the puncturing mode.

[0217] If it is known for sure that a set of transmission resources will transmit DCI, then the performance of rate matching is better than puncturing. Therefore, if it is known for sure that at least one first transmission resource transmits DCI, the mapping method adopted by the PDSCH resource for the first transmission resource that transmits DCI among the at least one first transmission resource can be the rate matching method. If it is not known for sure whether at least one first transmission resource transmits DCI, for example, it is necessary to perform blind detection to know whether at least one first transmission resource transmits DCI, then the puncturing method can ensure that the mapping of the resources used to transmit the PDSCH in the PDSCH resources is correct regardless of whether the result of the blind detection is correct or not. Therefore, when the blind detection may produce errors, the performance of puncturing is better than that of rate matching. Therefore, if the first signaling indicates to monitor DCI on at least one first transmission resource, the mapping method adopted by the PDSCH resource for the first transmission resource that transmits DCI among the at least one first transmission resource is the puncturing method.

[0218] Another aspect of the transmission mode of the PDSCH in the PDSCH resources is, for example, the RV adopted for the repetition of the PDSCH in the PDSCH resources.

[0219] For example, in the case where the first signaling indicates that at least one first transmission resource transmits DCI, the RVs of the first repetition and the second repetition of the PDSCH in the time domain are both the first version; or, in the case where the first signaling indicates to monitor DCI on at least one first transmission resource, the RV of the first repetition of the PDSCH in the time domain is the first version, and the RV of the second repetition of the PDSCH in the time domain is the second RV configured by the network device for this PDSCH; or, in the case where the first signaling indicates that at least one first transmission resource does not transmit DCI, the RV of the first repetition of the PDSCH in the time domain is the first version, and the RV of the second repetition of the PDSCH in the time domain is the second RV configured by the network device for this PDSCH. For the introduction of the first version and the RV configured by the network device for this PDSCH, etc., reference can be made to Figure 5 the embodiments shown.

[0220] If at least one first transmission resource transmits DCI, then if at least one first transmission resource is within the resources of the first repetition of the PDSCH in the time domain, since the at least one first transmission resource transmits DCI, the DCI will occupy a certain number of bits, which may cause the first repetition of the PDSCH in the time domain to be unable to transmit the complete system bits. Then, for the UE, if it receives a transport block that does not include the complete system bits, it may not be able to perform self-decoding, and thus may not be able to obtain the original information. Therefore, in this case, the RVs of the first repetition and the second repetition of the PDSCH in the time domain can be set to the first version. The first version is, for example, RV0, or it can also be other versions. For example, the transport block transmitted using the first version can include the system bits. Then, even if the first repetition of the PDSCH in the time domain cannot include the complete system bits due to the transmission of DCI, since the RV of the second repetition of the PDSCH in the time domain is also the first version, the second repetition of the PDSCH in the time domain can include the complete system bits. Then, the UE can also perform self-decoding based on the transport block transmitted by the second repetition of the PDSCH in the time domain, so as to obtain the original information, thereby increasing the probability of correct decoding by the UE. Of course, for greater reliability, the RV versions of more repetitions of the PDSCH in the time domain can also be set to the first version. For example, the RV of the third repetition of the PDSCH in the time domain can also be set to the first version, etc. In addition to using the repetitions of the first version, the other repetitions of the PDSCH can use other versions. For example, if the RV versions of the first repetition and the second repetition of the PDSCH in the time domain are the first version, then the third repetition of the PDSCH in the time domain can be the second RV configured by the network device for this PDSCH, and the fourth repetition of the PDSCH in the time domain can be the third RV configured by the network device for this PDSCH, and so on.

[0221] If at least one first transmission resource may transmit DCI (for example, the first signaling indicates to monitor DCI on at least one first transmission resource), or at least one first transmission resource does not transmit DCI, then there is a high probability that the first repetition of the PDSCH in the time domain can include the complete system bits. Therefore, in this case, the RV of the first repetition of the PDSCH in the time domain can be set to the first version. The first version is, for example, RV0, or it can also be other versions. For example, the transport block transmitted using the first version can include the system bits. The other repetitions of the PDSCH in the time domain do not necessarily have to use the first version. For example, the second repetition of the PDSCH in the time domain can use the second RV configured by the network device for this PDSCH, and the third repetition of the PDSCH in the time domain can use the third RV configured by the network device for this PDSCH, etc. This enables the technical solution of the embodiments of the present application to be better compatible with the prior art.

[0222] For a network device, it can also determine the DCI in the resources of the PDSCH and / or the transmission mode of the PDSCH. For example, the network device first determines the DCI in the resources of the PDSCH and / or the transmission mode of the PDSCH, and then indicates the DCI in the resources of the PDSCH and / or the transmission mode of the PDSCH through a first signaling. Therefore, the transmission mode determined by the network device is consistent with the transmission mode determined by the UE (or rather, the transmission mode indicated by the first signaling), which will not be elaborated here.

[0223] In the embodiments of the present application, the network device may send a first signaling to indicate whether at least one first transmission resource transmits DCI. Then, the UE can determine whether at least one first transmission resource transmits DCI according to the first signaling, which can reduce the probability of the UE's CRC detection error. Moreover, the first DCI can also indicate to monitor DCI on at least one first transmission resource, that is, it can indicate this uncertain situation, which takes into account the different generation times of DCI.

[0224] The embodiments of the present application can determine the CRC bit number of the DCI monitored in at least one first transmission resource according to the first signaling. If the UE determines that at least one first transmission resource transmits DCI, the determined CRC bit number can be less, thereby reducing the CRC overhead.

[0225] In addition, the embodiments of the present application can determine the influence of the DCI transmission on the PDSCH mapping mode according to the first signaling, improving the PDSCH transmission performance.

[0226] Moreover, the embodiments of the present application can also determine the RV version of the PDSCH repetition according to the first signaling, improving the PDSCH performance.

[0227] The embodiments of the present application only need to determine the DCI and / or the transmission mode of the PDSCH according to the first signaling, and the determination process is relatively simple.

[0228] Figure 8 The structural schematic diagram of a communication device provided by the embodiments of the present application is given. The communication device 800 may be Figure 5 the terminal device or the chip system of the terminal device described in the embodiments shown or Figure 7 the embodiments shown, and is used to implement the method for the terminal device in the above method embodiments. The communication device may also be Figure 5 the network device or the chip system of the network device described in the embodiments shown or Figure 7 the embodiments shown, and is used to implement the method corresponding to the network device in the above method embodiments. The specific functions can refer to the descriptions in the above method embodiments.

[0229] The communication device 800 includes one or more processors 801. The processor 801, which can also be referred to as a processing unit, can implement certain control functions. The processor 801 can be a general-purpose processor or a dedicated processor, etc. For example, it includes a baseband processor, a central processing unit, etc. The baseband processor can be used to process communication protocols and communication data. The central processing unit can be used to control the communication device 800, execute software programs, and / or process data. Different processors can be independent devices or can be provided in one or more processing circuits. For example, they can be integrated on one or more application-specific integrated circuits.

[0230] Optionally, the communication device 800 includes one or more memories 802 for storing instructions 804 that can be run on the processor, enabling the communication device 800 to execute the methods described in the above method embodiments. Optionally, data can also be stored in the memory 802. The processor and the memory can be provided separately or integrated together.

[0231] Optionally, the communication device 800 can include instructions 803 (sometimes also referred to as code or program) that can be run on the processor, enabling the communication device 800 to execute the methods described in the above embodiments. Data can be stored in the processor 801.

[0232] Optionally, the communication device 800 can further include a transceiver 805 and an antenna 806. The transceiver 805 can be referred to as a transceiver unit, transceiver, transceiver circuit, transceiver, input / output interface, etc., and is used to implement the transceiver function of the communication device 800 through the antenna 806.

[0233] Optionally, the communication device 800 can further include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (USB) interface, a power management module, an antenna, a speaker, a microphone, an input / output module, a sensor module, a motor, a camera, or a display screen, etc. It can be understood that in some embodiments, the communication device 800 can include more or fewer components, or certain components can be integrated, or certain components can be split. These components can be implemented in hardware, software, or a combination of software and hardware.

[0234] In the embodiments of the present application, the processor 801 and the transceiver 805 described may be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFID), a mixed-signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), or an electronic device, etc. To implement the communication device described herein, it may be an independent device (e.g., an independent integrated circuit, a mobile phone, etc.), or may be a part of a larger device (e.g., a module that can be embedded in other devices). For details, reference may be made to the foregoing descriptions of the terminal device and the network device, which will not be elaborated herein.

[0235] Embodiments of the present application provide a terminal device, which can be used in each of the foregoing embodiments. For convenience of description, the terminal device is referred to as a UE. The terminal device includes corresponding means, units, and / or circuits for implementing the UE functions described in the embodiments shown in Figure 5 and / or Figure 7 For example, the terminal device includes a transceiver module for supporting the terminal device to implement the transceiver function, and a processing module for supporting the terminal device to process signals.

[0236] Figure 9 A schematic structural diagram of a terminal device provided by an embodiment of the present application is given.

[0237] The terminal device 900 is applicable to the architecture shown in any one of the drawings in Figure 1 , Figures 4A to 4C For ease of explanation, Figure 9 only the main components of the terminal device 900 are shown. As shown in Figure 9 , the terminal device 900 includes a processor, a memory, a control circuit, an antenna, and an input / output device. The processor is mainly used to process communication protocols and communication data, and to control the entire terminal device 900, execute software programs, and process the data of software programs. The memory is mainly used to store software programs and data. The control circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to receive and transmit radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a microphone, a keyboard, etc., is mainly used to receive data input by the user and output data to the user.

[0238] Those skilled in the art can understand that, for ease of explanation, Figure 9Only one memory and one processor are shown. In some embodiments, the terminal device 900 may include multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., and the embodiments of the present application do not limit this.

[0239] In one example, an antenna and a control circuit with transceiver functions may be regarded as the transceiver unit 910 of the terminal device 900, and a processor with processing functions may be regarded as the processing unit 920 of the terminal device 900. As Figure 9 shown, the terminal device 900 includes a transceiver unit 910 and a processing unit 920. The transceiver unit may also be referred to as a transceiver, a transceiver machine, a transceiver device, etc. Optionally, the devices in the transceiver unit 910 for implementing the receiving function may be regarded as the receiving unit, and the devices in the transceiver unit 910 for implementing the sending function may be regarded as the sending unit, that is, the transceiver unit 910 includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be referred to as a receiver, a receiver circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter circuit, etc.

[0240] The embodiments of the present application also provide a network device, which can be used in the foregoing various embodiments. The network device includes means, units, and / or circuits for implementing Figure 5 and / or Figure 7 the functions of the network device described in the embodiments shown. For example, the network device includes a transceiver module for supporting the terminal device to implement the transceiver function, and a processing module for supporting the network device to process signals.

[0241] Figure 10 A schematic structural diagram of a network device provided by the embodiments of the present application is given. As Figure 10 shown, the network device can be applied to the architecture shown in any one of the drawings in Figure 1 , Figures 4A to 4C . The network device includes: a baseband device 1001, a radio frequency device 1002, and an antenna 1003. In the uplink direction, the radio frequency device 1002 receives the information sent by the terminal device through the antenna 1003 and sends the information sent by the terminal device to the baseband device 1001 for processing. In the downlink direction, the baseband device 1001 processes the information of the terminal device and sends it to the radio frequency device 1002. After the radio frequency device 1002 processes the information of the terminal device, it is sent to the terminal device through the antenna 1003.

[0242] The baseband device 1001 includes one or more processing units 10011, a storage unit 10012, and an interface 10013. The processing unit 10011 is used to support the network device to execute the functions of the network device in the above method embodiments. The storage unit 10012 is used to store software programs and / or data. The interface 10013 is used to interact with the radio frequency device 1002, and the interface includes an interface circuit for input and output of information. In one implementation, the processing unit is an integrated circuit, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip. The storage unit 10012 and the processing unit 10011 can be located in the same chip, that is, an on-chip storage element. Or the storage unit 10012 can also be on a different chip from the processing unit 10011, that is, an off-chip storage element. The storage unit 10012 can be a memory or a collective term for multiple memories or storage elements.

[0243] The network device can implement some or all of the steps in the above method embodiments in the form of one or more processing unit schedulers. For example, to implement Figure 5 and / or Figure 7 the corresponding functions of the network device in any of the embodiments shown in the accompanying drawings. The one or more processing units can support the same radio access technology or different radio access technologies.

[0244] When the several embodiments provided in this application are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned computer-readable storage medium can be any available medium that can be accessed by a computer. By way of example but not limited to: the computer-readable medium can include random access memory (RAM), read-only memory (ROM), or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer.

[0245] As described above, it is only the specific implementation manner of the present application. However, the protection scope of the embodiments of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the embodiments of the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A downlink transmission method, characterized in that, comprising: determining a time domain position of at least one first transmission resource in resources of a downlink data channel, wherein, when the at least one first transmission resource is a plurality of first transmission resources, a start position of time domain positions of the plurality of first transmission resources is the same, and the at least one first transmission resource can be used for transmitting downlink control information; determining a condition satisfied by the at least one first transmission resource according to the time domain position of the at least one first transmission resource and the time domain position of the resources of the downlink data channel, wherein the condition satisfied by the at least one first transmission resource includes a first condition or a second condition, the first condition is that a start position of the time domain position of the at least one first transmission resource is earlier than a first time domain position, and the second condition is that a start position of the time domain position of the at least one first transmission resource is equal to or later than the first time domain position, wherein the first time domain position is a position obtained by offsetting a first time interval from a start position of the time domain position of the resources of the downlink data channel, and the first time domain position is equal to or later than the start position of the time domain position of the resources of the downlink data channel; determining downlink control information in the resources of the downlink data channel and / or a transmission mode of the downlink data channel according to the condition satisfied by the at least one first transmission resource.

2. The method according to claim 1, characterized in that, the method further comprises: receiving first downlink control information from a network device; wherein, when the at least one first transmission resource satisfies the first condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate that the at least one first transmission resource does not transmit downlink control information; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate monitoring downlink control information on the at least one first transmission resource; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information does not indicate that the at least one first transmission resource transmits downlink control information, does not indicate that the at least one first transmission resource does not transmit downlink control information, and does not indicate monitoring downlink control information on the at least one first transmission resource.

3. The method according to claim 1 or 2, characterized in that, determining a transmission mode of downlink control information in the resources of the downlink data channel according to the condition satisfied by the at least one first transmission resource, comprising: When the at least one first transmission resource meets the first condition, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits; or, when the at least one first transmission resource meets the first condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits; When the at least one first transmission resource meets the first condition and the network device instructs to monitor downlink control information on the at least one first transmission resource, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits; Wherein, the first number of bits is less than the second number of bits.

4. The method according to claim 1 or 2, characterized in that According to the condition met by the at least one first transmission resource, determining the transmission mode of the downlink control information in the resources of the downlink data channel includes: When the at least one first transmission resource meets the second condition, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits; or, When the at least one first transmission resource meets the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits, or when the at least one first transmission resource meets the second condition and the network device instructs to monitor downlink control information on the at least one first transmission resource, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits; Wherein, the first number of bits is less than the second number of bits.

5. The method according to claim 1 or 2, characterized in that According to the condition met by the at least one first transmission resource, determining the transmission mode of the downlink data channel in the resources of the downlink data channel includes: When the at least one first transmission resource meets the first condition, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode; or, When the at least one first transmission resource meets the first condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode.

6. The method according to claim 1 or 2, characterized in that According to the condition met by the at least one first transmission resource, determining the transmission mode of the downlink data channel in the resources of the downlink data channel includes: When the at least one first transmission resource satisfies the second condition, determining that the mapping method of the resource of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the puncturing method; or, When the at least one first transmission resource satisfies the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that the mapping method of the resource of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the rate matching method, or when the at least one first transmission resource satisfies the second condition and the network device instructs to monitor downlink control information on the at least one first transmission resource, determining that the mapping method of the resource of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the puncturing method.

7. The method according to claim 1 or 2, wherein, determining the transmission method of the downlink data channel in the resource of the downlink data channel according to the condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the first condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that the redundancy versions of the first repetition and the second repetition of the downlink data channel in the time domain are both the first redundancy version configured by the network device for the downlink data channel; when the at least one first transmission resource satisfies the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that the redundancy version of the first repetition of the downlink data channel in the time domain is the first redundancy version configured by the network device for the downlink data channel, and the redundancy version of the second repetition in the time domain is the second redundancy version configured by the network device for the downlink data channel.

8. The method according to claim 1 or 2, wherein, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources corresponding to different aggregation levels among the plurality of first transmission resources.

9. A downlink transmission method, wherein, comprising: determining the time domain position of at least one first transmission resource in the resource of the downlink data channel, wherein when the at least one first transmission resource is a plurality of first transmission resources, the starting positions of the time domain positions of the plurality of first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information; Determine the conditions satisfied by the at least one first transmission resource according to the time-domain position of the at least one first transmission resource and the time-domain position of the resources of the downlink data channel, where the conditions satisfied by the at least one first transmission resource include a first condition or a second condition, the first condition is that all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain, and the second condition is that not all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain; Determine the downlink control information in the resources of the downlink data channel and / or the transmission mode of the downlink data channel according to the conditions satisfied by the at least one first transmission resource.

10. The method according to claim 9, wherein, the method further includes: receiving first downlink control information from a network device; wherein, when the at least one first transmission resource satisfies the first condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate that the at least one first transmission resource does not transmit downlink control information; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate monitoring downlink control information on the at least one first transmission resource; or, when the at least one first transmission resource satisfies the second condition, the first downlink control information does not indicate that the at least one first transmission resource transmits downlink control information, does not indicate that the at least one first transmission resource does not transmit downlink control information, and does not indicate monitoring downlink control information on the at least one first transmission resource.

11. The method according to claim 9 or 10, wherein, determining the transmission mode of the downlink control information in the resources of the downlink data channel according to the conditions satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the first condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits; or, when the at least one first transmission resource satisfies the first condition and the network device indicates that the at least one first transmission resource transmits downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a first number of bits; when the at least one first transmission resource satisfies the first condition and the network device indicates monitoring downlink control information on the at least one first transmission resource, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is a second number of bits; wherein, the first number of bits is less than the second number of bits.

12. The method according to claim 9 or 10, wherein, Determine the transmission mode of the downlink control information in the resources of the downlink data channel according to the condition(s) satisfied by the at least one first transmission resource, including: When the at least one first transmission resource satisfies the second condition, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; or, When the at least one first transmission resource satisfies the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits, or when the at least one first transmission resource satisfies the second condition and the network device instructs to monitor downlink control information on the at least one first transmission resource, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; wherein, the first number of bits is less than the second number of bits.

13. The method according to claim 9 or 10, characterized in that, Determine the transmission mode of the downlink data channel in the resources of the downlink data channel according to the condition(s) satisfied by the at least one first transmission resource, including: When the at least one first transmission resource satisfies the first condition, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode; or, When the at least one first transmission resource satisfies the first condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode.

14. The method according to claim 9 or 10, characterized in that, Determine the transmission mode of the downlink data channel in the resources of the downlink data channel according to the condition(s) satisfied by the at least one first transmission resource, including: When the at least one first transmission resource satisfies the second condition, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the puncturing mode; or, When the at least one first transmission resource satisfies the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode, or when the at least one first transmission resource satisfies the second condition and the network device instructs to monitor downlink control information on the at least one first transmission resource, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the puncturing mode.

15. The method according to claim 9 or 10, wherein, determining a transmission mode of a downlink data channel in resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the first condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that redundancy versions of a first repetition and a second repetition of the downlink data channel in time domain are both the first redundancy version configured by the network device for the downlink data channel; when the at least one first transmission resource satisfies the second condition and the network device instructs the at least one first transmission resource to transmit downlink control information, determining that a redundancy version of a first repetition of the downlink data channel in time domain is the first redundancy version configured by the network device for the downlink data channel, and a redundancy version of a second repetition of the downlink data channel in time domain is the second redundancy version configured by the network device for the downlink data channel.

16. The method according to claim 9 or 10, wherein, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources corresponding to different aggregation levels among the plurality of first transmission resources.

17. A downlink transmission method, wherein, comprising: configuring resources of a downlink data channel for a terminal device, the resources of the downlink data channel including at least one first transmission resource, when the at least one first transmission resource is a plurality of first transmission resources, starting positions of time domain positions of the plurality of first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information; determining downlink control information and / or a transmission mode of the downlink data channel in the resources of the downlink data channel according to a condition satisfied by the at least one first transmission resource, wherein the at least one first transmission resource satisfies a first condition or a second condition, and the condition satisfied by the at least one first transmission resource is determined by a time domain position of the at least one first transmission resource and a time domain position of the resources of the downlink data channel, the first condition is that a starting position of the time domain position of the at least one first transmission resource is earlier than a first time domain position, the second condition is that a starting position of the time domain position of the at least one first transmission resource is equal to or later than the first time domain position, wherein the first time domain position is a position obtained by offsetting a starting position of the time domain position of the resources of the downlink data channel by a first time interval, and the first time domain position is equal to or later than the starting position of the time domain position of the resources of the downlink data channel.

18. The method according to claim 17, wherein, the method further comprises: sending first downlink control information to the terminal device; wherein, when the at least one first transmission resource satisfies the first condition, the first downlink control information is used to instruct the at least one first transmission resource to transmit downlink control information, or is used to instruct the at least one first transmission resource not to transmit downlink control information; or, When the at least one first transmission resource meets the second condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate monitoring downlink control information on the at least one first transmission resource; or, When the at least one first transmission resource meets the second condition, the first downlink control information does not indicate that the at least one first transmission resource transmits downlink control information, does not indicate that the at least one first transmission resource does not transmit downlink control information, and does not indicate monitoring downlink control information on the at least one first transmission resource.

19. The method according to claim 17 or 18, wherein, determining the transmission mode of the downlink control information in the resource of the downlink data channel according to the condition met by the at least one first transmission resource includes: when the at least one first transmission resource meets the first condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits; or, when the at least one first transmission resource meets the first condition and the at least one first transmission resource transmits downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits; when the at least one first transmission resource meets the first condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; wherein, the first number of bits is less than the second number of bits.

20. The method according to claim 17 or 18, wherein, determining the transmission mode of the downlink control information in the resource of the downlink data channel according to the condition met by the at least one first transmission resource includes: when the at least one first transmission resource meets the second condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; or, when the at least one first transmission resource meets the second condition and the at least one first transmission resource transmits downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits, or when the at least one first transmission resource meets the second condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; wherein, the first number of bits is less than the second number of bits.

21. The method according to claim 17 or 18, wherein, determining the transmission mode of the downlink data channel in the resource of the downlink data channel according to the condition met by the at least one first transmission resource includes: When the at least one first transmission resource satisfies the first condition, determining that the mapping method adopted by the resource of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the rate matching method; or, When the at least one first transmission resource satisfies the first condition and the at least one first transmission resource transmits downlink control information, determining that the mapping method adopted by the resource of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the rate matching method.

22. The method according to claim 17 or 18, wherein, Determining the transmission mode of the downlink data channel in the resource of the downlink data channel according to the condition satisfied by the at least one first transmission resource includes: When the at least one first transmission resource satisfies the second condition, determining that the mapping method adopted by the resource of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the puncturing method; or, When the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, determining that the mapping method adopted by the resource of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the rate matching method, or when the at least one first transmission resource satisfies the second condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determining that the mapping method adopted by the resource of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the puncturing method.

23. The method according to claim 17 or 18, wherein, Determining the transmission mode of the downlink data channel in the resource of the downlink data channel according to the condition satisfied by the at least one first transmission resource includes: When the at least one first transmission resource satisfies the first condition and the at least one first transmission resource transmits downlink control information, determining that the redundancy versions of the first repetition and the second repetition of the downlink data channel in the time domain are both the first redundancy version configured by the network device for the downlink data channel; When the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, determining that the redundancy version of the first repetition of the downlink data channel in the time domain is the first redundancy version configured by the network device for the downlink data channel, and the redundancy version of the second repetition in the time domain is the second redundancy version configured by the network device for the downlink data channel.

24. The method according to claim 17 or 18, wherein, When the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources corresponding to different aggregation levels among the plurality of first transmission resources.

25. A downlink transmission method, It is characterized in that including configuring resources for a downlink data channel for a terminal device, where the resources of the downlink data channel include at least one first transmission resource. When the at least one first transmission resource is a plurality of first transmission resources, the starting positions of the time domain positions of the plurality of first transmission resources are the same, and the at least one first transmission resource can be used to transmit downlink control information determining the downlink control information and / or the transmission mode of the downlink data channel in the resources of the downlink data channel according to the conditions satisfied by the at least one first transmission resource, where the at least one first transmission resource satisfies a first condition or a second condition, and the conditions satisfied by the at least one first transmission resource are determined by the time domain position of the at least one first transmission resource and the time domain position of the resources of the downlink data channel. The first condition is that all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain, and the second condition is that not all of the at least one first transmission resources are located within the resources of the first repetition of the downlink data channel in the time domain 26. The method according to claim 25 It is characterized in that the method further includes sending first downlink control information to the terminal device; where when the at least one first transmission resource satisfies the first condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate that the at least one first transmission resource does not transmit downlink control information; or when the at least one first transmission resource satisfies the second condition, the first downlink control information is used to indicate that the at least one first transmission resource transmits downlink control information, or is used to indicate monitoring downlink control information on the at least one first transmission resource; or when the at least one first transmission resource satisfies the second condition, the first downlink control information does not indicate that the at least one first transmission resource transmits downlink control information, does not indicate that the at least one first transmission resource does not transmit downlink control information, and does not indicate monitoring downlink control information on the at least one first transmission resource 27. The method according to claim 25 or 26 It is characterized in that determining the transmission mode of the downlink control information in the resources of the downlink data channel according to the conditions satisfied by the at least one first transmission resource includes when the at least one first transmission resource satisfies the first condition, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits; or when the at least one first transmission resource satisfies the first condition and the at least one first transmission resource transmits downlink control information, determining that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits When the at least one first transmission resource satisfies the first condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; Wherein, the first number of bits is less than the second number of bits.

28. The method according to claim 25 or 26, characterized in that, According to the condition satisfied by the at least one first transmission resource, determining the transmission mode of the downlink control information in the resources of the downlink data channel includes: When the at least one first transmission resource satisfies the second condition, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; or, When the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the first number of bits, or when the at least one first transmission resource satisfies the second condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, determine that the number of CRC bits of the downlink control information transmitted in the at least one first transmission resource is the second number of bits; Wherein, the first number of bits is less than the second number of bits.

29. The method according to claim 25 or 26, characterized in that, According to the condition satisfied by the at least one first transmission resource, determining the transmission mode of the downlink data channel in the resources of the downlink data channel includes: When the at least one first transmission resource satisfies the first condition, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode; or, When the at least one first transmission resource satisfies the first condition and the at least one first transmission resource transmits downlink control information, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the rate matching mode.

30. The method according to claim 25 or 26, characterized in that, According to the condition satisfied by the at least one first transmission resource, determining the transmission mode of the downlink data channel in the resources of the downlink data channel includes: When the at least one first transmission resource satisfies the second condition, determine that the mapping mode adopted by the resources of the downlink data channel for the first transmission resource that transmits downlink control information in the at least one first transmission resource is the puncturing mode; or, When the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, it is determined that the mapping method of the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the rate matching method; or, when the at least one first transmission resource satisfies the second condition and the terminal device needs to monitor downlink control information on the at least one first transmission resource, it is determined that the mapping method of the resources of the downlink data channel for the first transmission resource that transmits downlink control information among the at least one first transmission resources is the puncturing method.

31. The method according to claim 25 or 26, wherein, determining the transmission mode of the downlink data channel in the resources of the downlink data channel according to the condition satisfied by the at least one first transmission resource includes: when the at least one first transmission resource satisfies the first condition and the at least one first transmission resource transmits downlink control information, it is determined that the redundancy versions of the first repetition and the second repetition of the downlink data channel in the time domain are both the first redundancy version configured by the network device for the downlink data channel; when the at least one first transmission resource satisfies the second condition and the at least one first transmission resource transmits downlink control information, it is determined that the redundancy version of the first repetition of the downlink data channel in the time domain is the first redundancy version configured by the network device for the downlink data channel, and the redundancy version of the second repetition in the time domain is the second redundancy version configured by the network device for the downlink data channel.

32. The method according to claim 25 or 26, wherein, when the at least one first transmission resource is a plurality of first transmission resources, there are two first transmission resources corresponding to different aggregation levels among the plurality of first transmission resources.

33. A communication device, wherein, comprising: a processor and a memory; the memory is used to store one or more computer programs, and the one or more computer programs include computer execution instructions. When the communication device runs, the processor executes the one or more computer programs stored in the memory, so that the communication device executes the method according to any one of claims 1 to 16, or so that the communication device executes the method according to any one of claims 17 to 32.

34. A computer-readable storage medium, wherein, the computer-readable storage medium is used to store a computer program. When the computer program runs on a computer, it causes the computer to execute the method according to any one of claims 1 to 16, or causes the computer to execute the method according to any one of claims 17 to 32.

35. A computer program product, wherein, The computer program product includes a computer program which, when running on a computer, causes the computer to execute the method according to any one of claims 1 to 16, or causes the computer to execute the method according to any one of claims 17 to 32.

36. A chip system, characterized in that the chip system comprises: a processor and an interface, the processor being configured to call and run instructions from the interface, and when the processor executes the instructions, implementing the method according to any one of claims 1 to 16, or implementing the method according to any one of claims 17 to 32.

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