CN111800868A

CN111800868A - Communication method and device

Info

Publication number: CN111800868A
Application number: CN201910760953.0A
Authority: CN
Inventors: 黄雯雯; 铁晓磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-04-02
Filing date: 2019-08-16
Publication date: 2020-10-20

Abstract

A communication method and apparatus. The method comprises the following steps: receiving first information from the network equipment at a first time, wherein the first information is carried in a first PDCCH (physical Downlink control channel), the first PDCCH uses a first time domain resource allocation set to schedule a first PDSCH at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PDSCH after the first time; the first PDCCH bearing the first information also comprises scheduling information of a second PDSCH, and data sent by the network equipment through the first PDSCH is received; sending feedback information of data to the network equipment; and scheduling the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is sent. When the data scheduling is carried out, the time domain resource allocation sets adopted in different time periods can be clearly indicated according to actual needs, so that the power consumption and the transmission delay of the terminal equipment are considered.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

Power consumption of terminal devices in communication systems is an important aspect of the user experience, and a Release16 version of the third generation partnership project (3 GPP) proposes to optimize the power consumption of terminal devices in New Radio (NR) systems. One of the contents for optimizing the power consumption of the terminal device is to enhance the mechanism for scheduling data by the base station, and the following describes the process for scheduling data by the base station according to the existing protocol.

In the protocol of 3GPP Release15, a base station configures or predefines a time domain resource allocation list (or referred to as a time domain resource allocation set) of a Physical Downlink Shared Channel (PDSCH) or a time domain resource allocation list (or referred to as a time domain resource allocation set) of a Physical Uplink Shared Channel (PUSCH) to a terminal device through Radio Resource Control (RRC) signaling, where the time domain resource allocation list includes a time slot offset between a Physical Downlink Control Channel (PDCCH) and a scheduled PDSCH or between the PDCCH and the scheduled PUSCH, and a starting symbol and length of the PDSCH or within a PUSCH time slot. The value of the slot offset in the time domain resource allocation list may be greater than or equal to 0, and the number of the values may be configured to be multiple, for example, the slot offset may be configured to {0,1,2,3,4,5,6}, when the base station actually schedules to the terminal device, one of the slot offsets is indicated through the PDCCH to indicate the time domain position of the currently scheduled PDSCH or PUSCH, and if the slot offset indicated by the PDCCH is 0, it indicates that the scheduled PDSCH or PUSCH and the PDCCH are in the same slot. Because the base station can schedule any value in the time domain resource allocation list, the terminal device can determine the currently scheduled slot offset only after finishing PDCCH detection, and therefore the terminal device always assumes that the slot offset indicated by the PDCCH may be the minimum value in the time domain resource allocation list when starting to detect the PDCCH. If the value in the time domain resource allocation list contains 0, that is, the PDSCH or PUSCH and PDCCH that the base station is likely to schedule are in the same time slot, even the starting symbols of the PDSCH and PDCCH are the same. For downlink scheduling, the terminal device needs to buffer data on the whole bandwidth while detecting the PDCCH each time, and because the time-frequency domain resource position of the PDSCH is not known or even whether the PDSCH is scheduled or not is not known before the PDCCH detection is completed, power consumption waste of the terminal device is brought; for uplink, similar reasoning is adopted, the terminal device does not know the position of the PUSCH scheduled by the PDCCH, even does not know whether the PUSCH is scheduled or not, and may be in the same time slot as the PDCCH and the PUSCH, so that the terminal device is required to complete PDCCH detection as soon as possible, otherwise the terminal device is not in time to transmit PUSCH data, and power consumption waste is also caused.

Based on this, it may be set that the timeslot offset K of uplink or downlink scheduling does not include 0 (i.e., the terminal device already knows to be cross-timeslot scheduling before PDCCH detection), i.e., K > x, x is greater than or equal to 0, then the terminal device may save power consumption in the following aspects:

unnecessary buffering is reduced, and the buffering mainly refers to PDSCH buffering;

the PDCCH processing time is relaxed, and both uplink and downlink scheduling can be improved. In terms of implementation of the terminal device, if the PDCCH processing time is very tight, the terminal device has high requirements on the clock frequency and the voltage, which results in relatively high power consumption, and if the PDCCH processing time is sufficient, the terminal has low requirements on the clock frequency and the voltage, which results in relatively low power consumption.

Although K > x can save power consumption of the terminal device, K > x has a disadvantage of increasing a delay time compared with a time domain resource allocation list including 0, that is, K > -0 (i.e., simultaneous slot scheduling), that is, there is a certain gap (gap) between the PDSCH or PUSCH and the PDCCH when the base station schedules, and thus, a transmission delay time is increased. Therefore, considering two factors of time delay and power consumption, the time domain resource allocation set for scheduling needs to be dynamically switched. However, the prior art does not provide a scheme for reliably and dynamically switching the time domain resource allocation set.

Disclosure of Invention

The application provides a communication method and a communication device, which can give consideration to power consumption and transmission delay of terminal equipment when data scheduling is carried out.

In a first aspect, a communication method is provided, the method including: receiving first information from network equipment at a first time, wherein the first information is carried in a first Physical Downlink Control Channel (PDCCH), the first PDCCH schedules a first Physical Downlink Shared Channel (PDSCH) according to a first time domain resource allocation set at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PDSCH after the first time; the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH; receiving data transmitted by the network device through the first PDSCH; sending feedback information of the data to the network equipment; and scheduling the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is sent, wherein the second time is after the first time. In this aspect, when data scheduling is performed, the time domain resource allocation sets adopted in different times can be explicitly indicated according to actual needs, so that power consumption and transmission delay of the terminal device are considered, meanwhile, the problem that behaviors of the base station and the terminal device are inconsistent due to missed detection of the terminal device is avoided, and reliability of dynamically switching the time domain resource allocation sets is ensured.

In one implementation, the first PDCCH carrying the first information does not include scheduling information of the first PDSCH, the method further comprising: sending feedback information of the first PDCCH to the network equipment; and scheduling the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is sent. In this implementation, in order to prevent the network side and the terminal device side from understanding the scheduling information in a inconsistent manner due to missed detection of the first information, the new time domain resource allocation set may be validated only after the feedback information of the first PDCCH is sent.

In a second aspect, a communication method is provided, the method comprising: sending first information to terminal equipment at a first time, wherein the first information is carried in a first Physical Downlink Control Channel (PDCCH), the first PDCCH schedules a first Physical Downlink Shared Channel (PDSCH) according to a first time domain resource allocation set at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PDSCH after the first time; the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH; transmitting data to the terminal device through the first PDSCH; receiving feedback information of the data from the terminal equipment; and scheduling the second PDSCH according to the second time domain resource allocation set at a second time after receiving the feedback information of the data, wherein the second time is after the first time. In this aspect, when data scheduling is performed, the time domain resource allocation sets adopted in different times may be explicitly indicated according to actual needs, so that power consumption and transmission delay of the terminal device are considered.

In one implementation, the first PDCCH carrying the first information does not include scheduling information of the first PDSCH, the method further comprising: receiving feedback information of the first PDCCH from the terminal equipment; and scheduling the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is received.

In a third aspect, a communication method is provided, the method including: receiving first information from a network device at a first time, wherein the first information is carried in a first Physical Downlink Control Channel (PDCCH), the first PDCCH comprises scheduling information of a first Physical Uplink Shared Channel (PUSCH), the first PUSCH is scheduled according to a first time domain resource allocation set at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PUSCH after the first time; sending data to the network equipment through the first PUSCH according to the scheduling information of the first PUSCH; and scheduling the second PUSCH in accordance with the second set of time domain resource allocations at a second time after the data is transmitted, wherein the second time is subsequent to the first time. In this aspect, when data scheduling is performed, the time domain resource allocation sets adopted in different times can be explicitly indicated according to actual needs, so that power consumption and transmission delay of the terminal device are considered, meanwhile, the problem that behaviors of the base station and the terminal device are inconsistent due to missed detection of the terminal device is avoided, and reliability of dynamically switching the time domain resource allocation sets is ensured.

In a fourth aspect, a method of communication is provided, the method comprising: sending first information to a terminal device at a first time, wherein the first information is carried in a first Physical Downlink Control Channel (PDCCH), the first PDCCH comprises scheduling information of a first Physical Uplink Shared Channel (PUSCH), the first PUSCH is scheduled according to a first time domain resource allocation set at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PUSCH after the first time; receiving data sent by the terminal equipment through the first PUSCH; and scheduling the second PUSCH in accordance with the second set of time domain resource allocations at a second time after the data is received, wherein the second time is subsequent to the first time.

In yet another implementation, the first set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than or equal to 0, and the second set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than 0; or the first set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than 0, and the second set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than or equal to 0.

In a fifth aspect, a communication method is provided, the method comprising: receiving first information from network equipment at a first time, wherein the first information is carried on a first Physical Downlink Control Channel (PDCCH), and the first PDCCH schedules a first Physical Downlink Shared Channel (PDSCH) or a first Physical Uplink Shared Channel (PUSCH) according to a first time domain resource allocation set at the first time; when the bits of the frequency domain resource allocation domain of the first PDCCH are all zero, determining a second time domain resource allocation set for scheduling a second PDSCH or a second PUSCH after the first time according to the bits of the time domain resource allocation domain of the first PDCCH; and scheduling the second PDSCH or second PUSCH at a second time according to the determined first set of time domain resource allocations, wherein the second time is subsequent to the first time. In this aspect, when the first information is not used for scheduling, the time domain resource allocation set may be indicated by a bit of the time domain resource allocation domain of the first information, so that the time domain resource allocation sets adopted in different times may be explicitly indicated according to actual needs, thereby taking power consumption and transmission delay of the terminal device into account, simultaneously avoiding a problem of inconsistent behaviors of the base station and the terminal device due to missed detection of the terminal device, and ensuring reliability of dynamically switching the time domain resource allocation set.

In one implementation, when all bits of the frequency domain resource allocation field of the first PDCCH are zero, determining, according to the bits of the time domain resource allocation field of the first PDCCH, a second time domain resource allocation set for scheduling a second PDSCH or a second PUSCH after the first time, includes: when all bits of the frequency domain resource allocation domain of the first PDCCH are zero, determining the minimum time slot offset value or the index of the minimum time slot offset value of the first time domain resource allocation set according to the bits of the time domain resource allocation domain of the first PDCCH.

In a sixth aspect, a communication method is provided, the method comprising: sending first information to a terminal device at a first time, wherein the first information is carried on a first Physical Downlink Control Channel (PDCCH), the first PDCCH schedules a first Physical Downlink Shared Channel (PDSCH) or a first Physical Uplink Shared Channel (PUSCH) according to a first time domain resource allocation set at the first time, bits of a frequency domain resource allocation domain of the first PDCCH are all zero, and the bits of the time domain resource allocation domain of the first PDCCH are used for determining a second time domain resource allocation set used for scheduling a second PDSCH or a second PUSCH after the first time; and scheduling the second PDSCH or second PUSCH at a second time according to the determined first set of time domain resource allocations, wherein the second time is subsequent to the first time.

In a seventh aspect, a communication method is provided, the method comprising: receiving first downlink control information from network equipment, wherein the first downlink control information is carried in a first Physical Downlink Control Channel (PDCCH); and determining a first minimum slot offset value according to a first field of the first downlink control information, wherein the first field includes at least one of: a frequency domain resource allocation domain, a time domain resource allocation domain, a modulation coding mode domain, a new data indication domain or a redundancy version domain; the first minimum time slot offset value represents the minimum available time slot offset value for receiving a Physical Downlink Shared Channel (PDSCH) or transmitting a Physical Uplink Shared Channel (PUSCH). In this aspect, the first field of the multiplexed downlink control information is used to determine the minimum slot offset value, which may reduce the overhead of the control information without increasing bits of the control information, and may also improve the reliability of the signaling in combination with HARQ-ACK feedback.

In one implementation, the first downlink control information further includes first indication information, where the first indication information is used to indicate that the first domain carries indication information of a first minimum timeslot offset value. In this implementation, the current multiplexing first domain is explicitly indicated by the first indication information, and the first domain is used for carrying the indication information of the minimum slot offset value.

In yet another implementation, the determining a minimum slot offset value according to the first field of the first downlink control information includes: when one or more of the first domains of the first downlink control information are first set values, obtaining values of the time domain resource allocation domains, where the values of the time domain resource allocation domains are used to indicate the first minimum timeslot offset value. In this implementation, the value of the time domain resource allocation field is used to indicate a minimum slot offset value when one or more of the first fields are the first set value. It is to be understood that one or more of the first fields are first settings, and the settings for each field may be different.

In yet another implementation, the determining a first minimum slot offset value according to the first field of the first downlink control information includes: when one or more fields in the first field of the first downlink control information are first set values, acquiring a first minimum time slot offset value which is pre-configured or predefined. In this implementation, the minimum slot offset value may be a pre-configured or pre-defined value when one or more of the first domains are the first set value.

In yet another implementation, the receiving the first downlink control information from the network device includes: receiving the first downlink control information at a first time, wherein the application time of the first downlink control information is not earlier than a second time; the method further comprises the following steps: receiving second downlink control information at a third time, wherein the third time is between the first time and the second time, the second downlink control information is used for indicating a second minimum time slot offset value, and the application time of the second downlink control information is not earlier than a fourth time; and determining a used minimum time slot offset value and an application time of the used minimum time slot offset value according to the first downlink control information and/or the second downlink control information, wherein the used minimum time slot offset value is one of the first minimum time slot offset value and the second minimum time slot offset value, and the used application time is not earlier than one of the second time and the fourth time. In this implementation, if second downlink control information is received before the time of applying the first downlink control information, the minimum slot offset value to be used and the time of applying the minimum slot offset value to be used are determined according to the first downlink control information and/or the second downlink control information, so as to resolve a conflict between the minimum slot offset values indicated by the plurality of downlink control information.

In yet another implementation, the first domain is a frequency domain resource allocation domain, the method further comprising: determining a first minimum slot offset value according to a first field of the first downlink control information, including: if the frequency domain resource allocation mode is the frequency domain resource allocation mode type0, when the bits of the frequency domain resource allocation domain are all 0, the bits of the time domain resource allocation domain indicate the first minimum time slot offset value; and if the frequency domain resource allocation mode is the frequency domain resource allocation mode type1, and when the bits of the frequency domain resource allocation domain are all 1, the bits of the time domain resource allocation domain indicate the first minimum time slot offset value.

In yet another implementation, the method further comprises: receiving first configuration information from the network device, where the first configuration information includes the configured frequency domain resource allocation manner.

In an eighth aspect, a communication method is provided, the method comprising: sending first downlink control information, wherein the first downlink control information is carried in a first Physical Downlink Control Channel (PDCCH), and a first field of the first downlink control information is used for determining a first minimum slot offset value, wherein the first field includes at least one of the following fields: the first minimum time slot deviant is used for expressing the minimum available time slot deviant for sending a Physical Downlink Shared Channel (PDSCH) or receiving a Physical Uplink Shared Channel (PUSCH).

In one implementation, the first downlink control information further includes first indication information, where the first indication information is used to indicate that the first domain carries indication information of a first minimum slot offset value.

In yet another implementation, the sending the first downlink control information includes: the first downlink control information is sent at a first moment, wherein the application moment of the first information is not earlier than a second moment; the method further comprises the following steps: sending and receiving second downlink control information at a third moment, wherein the third moment is between the first moment and the second moment, the second downlink control information is used for indicating a second minimum time slot offset value, and the application moment of the second downlink control information is not earlier than a fourth moment; and determining a used minimum time slot offset value and an application time of the used minimum time slot offset value according to the first downlink control information and/or the second downlink control information, wherein the used minimum time slot offset value is one of the first minimum time slot offset value and the second minimum time slot offset value, and the used application time is not earlier than one of the second time and the fourth time.

In yet another implementation, the first domain is a frequency domain resource allocation domain, and the first domain of the first downlink control information is used to determine a first minimum slot offset value, including: if the frequency domain resource allocation mode is the frequency domain resource allocation mode type0, when the bits of the frequency domain resource allocation domain are all 0, the bits of the time domain resource allocation domain indicate the first minimum time slot offset value; and if the frequency domain resource allocation mode is the frequency domain resource allocation mode type1, and when the bits of the frequency domain resource allocation domain are all 1, the bits of the time domain resource allocation domain indicate the first minimum time slot offset value.

In yet another implementation, the method further comprises: and sending first configuration information, wherein the first configuration information comprises the configured frequency domain resource allocation mode.

In a ninth aspect, a communication method is provided, the method comprising: receiving downlink control information on a first bandwidth part BWP, wherein the downlink control information includes a slot offset value and BWP identification indication information; and when the BWP indication information indicates a second BWP, taking the slot offset value as a minimum slot offset value for the second BWP. In this aspect, when BWP is dynamically switched, the minimum slot offset value for the target BWP may be indicated at the same time, without adding new bits, and without affecting the scheduling opportunity to reduce transmission delay. When BWP does not switch, the minimum slot offset value can be updated from a larger value to a smaller value without affecting the scheduling opportunity and reducing transmission delay without adding new bit field.

In one implementation, the downlink control information is further configured to indicate that a physical downlink shared channel PDSCH is received or a physical uplink shared channel PUSCH is transmitted on the second BWP at a first time, where the first time is a time slot in which a slot offset value is added to a receiving time slot of the downlink control information.

In yet another implementation, the method further comprises: when the BWP indication information indicates a first BWP, if the timeslot offset value is smaller than the minimum timeslot offset value of the first BWP, receiving the PDSCH or transmitting the PUSCH at a second time, where the second time is a timeslot where the timeslot of the downlink control information plus the minimum timeslot offset value of the first BWP is located; and taking the slot offset value as a new minimum slot offset value for the first BWP. In this implementation, if the BWP is not switched, if the timeslot offset value carried by the downlink control information is smaller than the minimum timeslot offset value of the first BWP, data transmission is still performed according to the minimum timeslot offset value of the first BWP, and then the timeslot offset value carried by the downlink control information is used as the new minimum timeslot offset value of the first BWP.

In yet another implementation, the method further comprises: and when the BWP identification indication information indicates a second BWP, if the time slot offset value is smaller than the time delay required by BWP switching, receiving the PDSCH or transmitting the PUSCH on the time slot of the receiving time slot of the downlink control information plus the time delay required by the BWP switching. In this implementation, if the slot offset value carried by the downlink control information is smaller than the time delay required for BWP handover, data transmission needs to be performed after the BWP handover is completed, and data transmission is performed on the slot where the time delay required for BWP handover is added to the receiving slot of the downlink control information, so as to ensure that the scheduling opportunity is not affected while indicating the minimum slot offset value of the second BWP.

In a tenth aspect, there is provided a method of communication, the method comprising: transmitting downlink control information on a first bandwidth part BWP, wherein the downlink control information includes a slot offset value and BWP identification indication information; and when the BWP indication information indicates a second BWP, taking the slot offset value as a minimum slot offset value for the second BWP.

In one implementation, the downlink control information is further configured to instruct to transmit a physical downlink shared channel PDSCH or receive a physical uplink shared channel PUSCH on the second BWP at a first time, where the first time is a time slot in which a slot offset value is added to a receiving time slot of the downlink control information.

In yet another implementation, the method further comprises: when the BWP indication information indicates a first BWP, if the timeslot offset value is smaller than the minimum timeslot offset value of the first BWP, transmitting the PDSCH or receiving the PUSCH at a second time, where the second time is a timeslot where the timeslot of the downlink control information plus the minimum timeslot offset value of the first BWP is located; and taking the slot offset value as a new minimum slot offset value for the first BWP.

In yet another implementation, the method further comprises: when the BWP indication information indicates a second BWP, if the slot offset value is smaller than the delay required for BWP handover, transmitting the PDSCH or receiving the PUSCH in the slot where the slot of the downlink control information plus the delay required for BWP handover is located.

An eleventh aspect provides a communication apparatus that can implement the communication method of the first aspect, the third aspect, the fifth aspect, the seventh aspect, the ninth aspect, or any implementation. For example, the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a terminal device. The above-described method may be implemented by software, hardware, or by executing corresponding software by hardware.

In one possible implementation, the communication device has a structure including a processor, a memory; the processor is configured to support the apparatus to perform corresponding functions in the above-described communication method. The memory is used for coupling with the processor, which holds the necessary programs (instructions) and/or data for the device. Optionally, the communication apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the communication device may include a unit module for performing corresponding functions or actions in the above method.

In yet another possible implementation, the wireless communication device includes a processor and a transceiver, the processor is coupled to the transceiver, and the processor is configured to execute a computer program or instructions to control the transceiver to receive and transmit information; the processor is further configured to implement the above-described method when the processor executes the computer program or instructions. Illustratively, the transceiver may be a transceiver, a transceiver circuit, or an input/output interface. When the communication device is a chip, the transceiver is a transceiver or an input/output interface.

When the communication device is a chip, the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface. When the communication device is a network device, the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.

A twelfth aspect provides a communication apparatus, which can implement the communication method of the second, fourth, sixth, eighth, tenth or any implementation. For example, the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a network device, and the above method may be implemented by software, hardware, or by executing corresponding software by hardware.

In one possible implementation, the communication device has a structure including a processor, a memory; the processor is configured to support the apparatus to perform corresponding functions in the above-described communication method. The memory is used for coupling with the processor and holds the programs (instructions) and data necessary for the device. Optionally, the communication apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the communication device may include a unit module for performing corresponding actions in the above method.

When the communication device is a chip, the receiving unit may be an input unit, such as an input circuit or a communication interface; the sending unit may be an output unit, such as an output circuit or a communication interface. When the communication device is a terminal device, the receiving unit may be a receiver (also referred to as a receiver); the sending unit may be a transmitter (also referred to as transmitter).

It is understood that, in the embodiments of the present application, the hardware parts responsible for input and output in the communication apparatus may be integrated together.

In a thirteenth aspect, a computer-readable storage medium is provided, having stored therein instructions, which, when run on a computer, cause the computer to perform the method of the above-described aspects.

In a fourteenth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In a fifteenth aspect, a communication system is provided, which includes any one of the foregoing network device side communication apparatuses, and/or any one of the terminal device side communication apparatuses.

Drawings

The drawings that are required to be used in this application, either in the examples or in the background, are described below.

Fig. 1 is a schematic diagram of a communication system to which the present application relates;

fig. 2 is a flowchart illustrating a communication method according to an embodiment of the present application;

FIG. 3 is a diagram illustrating exemplary switching of a time domain resource allocation set;

FIG. 4 is a diagram illustrating a switching of an exemplary set of time domain resource allocations;

FIG. 5 is a diagram of an exemplary switching of a time domain resource allocation set;

fig. 6 is a flowchart illustrating another communication method according to an embodiment of the present application;

FIG. 7 is a diagram of an exemplary switching of a time domain resource allocation set;

fig. 8 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 9a is a schematic diagram of indicating a time domain resource allocation set by a bit of a time domain resource allocation field of DCI;

fig. 9b is a schematic diagram of indicating PDSCH or PUSCH frequency domain resources by RIV;

fig. 10 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 11 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 12 is a schematic diagram illustrating application of downlink control information;

fig. 13 is a flowchart illustrating another communication method according to an embodiment of the present application;

FIG. 14 is a schematic diagram of a bandwidth partial switch;

fig. 15 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present application;

fig. 18 is a schematic structural diagram of a simplified network device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

Fig. 1 presents a schematic view of a communication system to which the present application relates. The communication system may include at least one network device 100 (only 1 shown) and one or more terminal devices 200 connected to the network device 100.

The network device 100 may be a device capable of communicating with the terminal device 200. The network device 100 may be any device having a wireless transceiving function. Including but not limited to: a base station NodeB, an evolved node b, a base station in a fifth generation (5G) communication system, a base station or network device in a future communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and the like. The network device 100 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network device 100 may also be a small station, a Transmission Reference Point (TRP), or the like. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.

The terminal device 200 is a device with a wireless transceiving function, and can be deployed on land, including indoors or outdoors, hand-held, worn or vehicle-mounted; can also be deployed on the water surface, such as a ship and the like; and may also be deployed in the air, such as airplanes, balloons, satellites, and the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. The embodiments of the present application do not limit the application scenarios. A terminal device may also sometimes be referred to as a User Equipment (UE), an access terminal device, a UE unit, a mobile station, a remote terminal device, a mobile device, a terminal (terminal), a wireless communication device, a UE agent, a UE device, or the like.

It should be noted that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.

Fig. 2 is a schematic flowchart of a communication method according to an embodiment of the present application, including the following steps:

s101, the network equipment sends first information to the terminal equipment at the first time.

Accordingly, the terminal device receives the first information.

Wherein the first information is carried in the first PDCCH. For example, the first information is Downlink Control Information (DCI). Wherein the first PDCCH schedules the first PDSCH according to the first set of time domain resource allocations at a first time.

As shown in fig. 3, the DCI1 is the first information at a first time. The DCI1 is carried on the first PDCCH. At the first time, the first PDCCH is scheduled by using the time domain resource allocation set 1, that is, the time domain resource allocation set valid at the first time is the time domain resource allocation set 1, the DCI1 carries scheduling information of the PDSCH1, which includes a time slot offset of the PDSCH1, and the time slot offset of the PDSCH1 is one value in the time domain resource allocation set 1. For example, the time slot offset values of the time domain resource allocation set 1 are all greater than 0, that is, the first PDCCH performs cross-slot scheduling.

In this embodiment, the first information is used to determine a second set of time domain resource allocations for scheduling the second PDSCH after the first time. That is, the first information is used to indicate that a value range of a slot offset of the second PDCCH for scheduling the second PDSCH changes after the first time, for example, the slot offset includes 0 after the first time. As shown in fig. 3, DCI1 schedules PDSCH1 while indicating that PDCCH-scheduled PDSCH may be scheduled for a first time later in a simultaneous slot scheduling. I.e. the first set of time domain resource allocations comprises a value for which the slot offset value is greater than or equal to 0. In this embodiment, the first information is used to determine that a value range of time slot offset of the PDSCH changes when the second PDCCH schedules the PDSCH after the first time, and a specific indication manner is not limited, where the first information may be a display indication or an implicit indication; the minimum value of the slot offset may be indicated, and an index value corresponding to the minimum value of the slot offset may also be indicated. The time domain resource allocation set in the present invention can also be embodied as the minimum value of the slot offset.

S102, the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH, and the network equipment sends data to the terminal equipment through the first PDSCH.

Accordingly, the terminal device receives the data.

In this embodiment, the first PDCCH carrying the first information further includes scheduling information of the first PDSCH, and therefore, according to the scheduling information, the network device transmits data to the terminal device through the first PDSCH.

As shown in fig. 3, at the first time, the first PDCCH carrying DCI1 is also used to schedule PDSCH1, and the network device transmits data to the terminal device through PDSCH 1. Furthermore, DCI2 still schedules PDSCH2 according to time domain resource allocation set 1, then the network device transmits data to the terminal device on PDSCH 2.

S103, the terminal equipment sends feedback information of the data to the network equipment.

Accordingly, the network device receives feedback information for the data.

After receiving data sent by the first PDSCH, the terminal device needs to send feedback information to the network device, where the feedback information includes an Acknowledgement (ACK) and a non-acknowledgement (NACK), and indicates whether the terminal device correctly receives the data sent by the PDSCH.

As shown in fig. 3, for data transmitted by the network device on PDSCH1, the terminal device transmits a NACK1 to the network device; for data sent by the network device on PDSCH2, the terminal device sends an ACK2 to the network device.

And S104, scheduling the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data of the first PDSCH is sent, wherein the second time is after the first time.

In this embodiment, no matter whether the feedback message corresponding to the first PDSCH is ACK or NACK, after the network device receives the feedback information corresponding to the first PDSCH sent by the terminal device, that is, at a second time after the terminal device finishes sending the feedback information of the data of the first PDSCH, the second PDCCH schedules the second PDSCH according to the second time domain resource allocation set. It should be noted that the second PDSCH may be one or more, and the second PDSCH refers to all PDSCHs scheduled in the second time. Since the network device receives the feedback information sent by the terminal device, the network device may determine that the terminal device has received the first information, that is, the terminal device does not miss the PDCCH carrying the first information, and the first information is used to determine a second time domain resource allocation set for scheduling the second PDSCH by the second PDCCH after the first time, and then the terminal device and the network device may simultaneously take effect on the time domain resource allocation set of the PDSCH as the second time domain resource allocation set after the feedback information of the data of the first PDSCH.

As shown in fig. 3, after the terminal device finishes transmitting NACK1, the second PDCCH may use time domain resource allocation set 2 for scheduling, that is, after finishing transmitting NACK1, the effective time domain resource allocation set is time domain resource allocation set 2, that is, the second PDCCH includes simultaneous slot scheduling when scheduling PDSCH. For example, DCI3 and PDSCH3 are scheduled for simultaneous slots.

In addition, the first PDCCH carrying the first information may not include the scheduling information of the first PDSCH, and in another embodiment, S102 and S103 may be replaced with: and the terminal equipment sends the feedback information of the first PDCCH to the network equipment. Indicating that the terminal device received the first information.

S104 may be replaced with: and scheduling the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is sent.

In this alternative embodiment, if the first PDCCH carrying the first information does not include the scheduling information of the first PDSCH, the terminal device may send the feedback information of the first PDCCH to the network device in order to prevent the first information from being missed, and schedule the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is sent. The implementation process can refer to the above embodiment.

Furthermore, after the network device indicates the handover time domain resource allocation set through the DCI, before the first information is validated, that is, before the terminal device finishes sending the feedback message, the network device still performs scheduling using the current time domain resource allocation set, for example, cross-slot scheduling as indicated by set 1 in fig. 3, but in this time period (after the handover signaling is indicated and before the signaling is validated), the PDCCH-scheduled PDSCH cannot be after the time when the first information is validated, that is, the PDCCH-scheduled PDSCH cannot be after the feedback message of the first PDSCH or the feedback message of the first PDCCH. For example, as shown in fig. 4, the scheduling of DCI2 still conforms to set 1, but the scheduled PDSCH2 is after the effective time, which is not desirable. But rather the scheduling of DCI2 should still conform to set 1 as in fig. 3 and the scheduled PDSCH2 is before the time of validation, so that the network device and the terminal device can really achieve simultaneous slot scheduling immediately after signaling validation.

The reason for the above constraint is because the current protocol does not support scheduling reordering, i.e. for two HARQ processes, if the end symbol position of DCI3 is not earlier than the end symbol position of DCI2, while the start symbol position of PDSCH3 is earlier than the end symbol position of PDSCH2, such scheduling is not supported. Therefore, if the case in which DCI2 schedules PDSCH2 in fig. 5 occurs after the time when the first information indicates that PDSCH is scheduled by PDCCH for the period of time after the first information is validated, but PDSCH3 cannot be scheduled by DCI3 in the same time slot even if the handover signaling is validated, when the PDSCH cannot be scheduled by PDCCH for the period of time until the first information is validated.

It should be noted that, in this embodiment, if the terminal device is in cross-timeslot scheduling, the timeslot offset values in the time domain resource allocation set are all greater than 0, once the terminal device sends a Scheduling Request (SR) to the network device, the terminal device falls back to the default configuration of the time domain resource allocation set of the PDSCH, i.e., the timeslot offset value may include 0, and may be scheduled in the same timeslot. After the network device receives the SR sent by the terminal device, the network device also falls back to the default time domain resource allocation set, i.e., the timeslot offset includes 0, and can perform the timeslot scheduling.

According to the communication method provided by the embodiment of the application, when data scheduling is carried out, the time domain resource allocation sets adopted in different time periods can be definitely indicated according to actual needs, so that the power consumption and the transmission delay of the terminal equipment are considered, meanwhile, the problem that the behaviors of the network equipment and the terminal equipment are inconsistent due to the fact that the terminal equipment is missed is avoided, and the reliability of dynamically switching the time domain resource allocation sets is ensured.

Fig. 6 is a flowchart of another communication method provided in the embodiment of the present application, including the following steps:

s201, the network equipment sends first information to the terminal equipment at the first time.

Accordingly, the terminal device receives the first information.

The first information is carried in a first PDCCH, the first PDCCH carrying the first information further comprises scheduling information of a first PUSCH, the first PUSCH is scheduled according to a first time domain resource allocation set at a first time, and the first information is used for determining a second time domain resource allocation set of a second PUSCH to be scheduled after the first time.

S202, the terminal equipment sends data to the network equipment through the first PUSCH according to the scheduling information of the first PUSCH. The slot offset of the first PUSCH is one value in the first set of time domain resource allocations.

Accordingly, the network device receives the data.

And S203, scheduling a second PUSCH according to a second time domain resource allocation set at a second time after the data of the first PUSCH is transmitted, wherein the second time is after the first time.

Unlike the embodiment shown in fig. 2, the first information is used to determine the time domain resource allocation set for uplink scheduling. For uplink scheduling, since there is no HARQ-ACK feedback, after the terminal device sends a PUSCH to the network device, the network device may not send HARQ-ACK information to the terminal device, and then the first PDCCH schedules the first PUSCH according to the first time domain resource allocation set at the first time, and then the terminal device may schedule the second PUSCH according to the second time domain resource allocation set at the second time after sending data through the first PUSCH.

The first set of time domain resource allocations is a different set than the second set of time domain resource allocations. For example, at a first time, the first PDCCH schedules the first PUSCH according to the first time domain resource allocation set, and a slot offset value in the first time domain resource allocation set is greater than or equal to 0, that is, the scheduling in the same time slot is available; and at the second time, the time slot offset values in the second time domain resource allocation set are all larger than 0, namely, the time slot can be crossed and scheduled at the same time. Or on the contrary, at the first time, the first PDCCH is scheduled according to the first time domain resource allocation set, and the time slot offset value in the first time domain resource allocation set is greater than 0, that is, the time slot can be scheduled in a cross-time slot mode, and the time slot cannot be scheduled at the same time; at the second time, the time slot offset value in the second time domain resource allocation set is greater than or equal to 0, i.e. the scheduling in the same time slot is possible. The first set of time domain resource allocations may also be a subset of the second set of time domain resource allocations, or the second set of time domain resource allocations may also be a subset of the first set of time domain resource allocations.

In this embodiment, the first information is used to determine that a value range of a slot offset for scheduling the second PUSCH after the first time is changed, a specific indication manner is not limited, and the first information may be a display indication or an implicit indication; the minimum value of the slot offset may be indicated, and an index value corresponding to the minimum value of the slot offset may also be indicated. The time domain resource allocation set in the present invention can also be expressed as the minimum value of the time slot offset.

As another time domain resource allocation set switching diagram illustrated in fig. 7, a first PDCCH carrying DCI1 at a first time is scheduled according to time domain resource allocation set 1, for example, PUSCH1 is scheduled, and the slot offset of PUSCH1 is one value in time domain resource allocation set 1, that is, the valid time domain resource allocation set is time domain resource allocation set 1. In this embodiment, the time domain offset value K in time domain resource allocation set 1 is greater than 0. For example, at a first time, DCI1 schedules PUSCH1 for cross-slot scheduling, and DCI2 schedules PUSCH2 for cross-slot scheduling. The DCI1 indicates that the second time uses resource allocation set 2, i.e., indicates that the second time switches to co-slot scheduling. The indication takes effect after the terminal device has sent PUSCH 1. The PUSCH is scheduled at a second time according to time domain resource allocation set 2, e.g., the PDCCH carrying DCI3 schedules PUSCH3 according to time domain resource allocation set 2. The time domain resource allocation set 2 is valid. In this example, time domain offset value K in time domain resource allocation set 2 is greater than or equal to 0. For example, DCI3 and PUSCH3 may be scheduled in simultaneous slots. The second time is after the first time.

It should be noted that, in this embodiment, if the terminal device is in cross timeslot scheduling, that is, the timeslot offset values in the time domain resource allocation set are all greater than 0, once the terminal device sends a scheduling request to the network device, the terminal device falls back to the default configuration of the time domain resource allocation set of the PDSCH, that is, the timeslot offset value may include 0, and may be scheduled in the same timeslot. After the network device receives the SR sent by the terminal device, the network device also falls back to the default time domain resource allocation set, i.e., the timeslot offset includes 0, and can perform the timeslot scheduling.

Fig. 8 is a flowchart illustrating another communication method according to an embodiment of the present application, including the following steps:

s301, the network equipment sends first information to the terminal equipment at the first time.

Accordingly, the terminal device receives the first information.

Wherein the first information is carried in the first PDCCH. The first PDCCH schedules the first PDSCH according to the first set of time domain resource allocations at a first time. For example, the first information is DCI. The DCI employs an existing DCI format (DCIformat) specific to the UE.

S302, when all bits of a frequency domain resource allocation (frequency domain resource allocation) field of the first PDCCH are zero, the terminal device determines, according to bits of a time domain resource allocation (time domain resource allocation) field of the first PDCCH, a second time domain resource allocation set for scheduling the second PDSCH or the second PUSCH after the first time.

And the terminal equipment analyzes the DCI of the PDCCH to obtain bits of a frequency domain resource allocation domain and bits of a time domain resource allocation domain. When the DCI is used for scheduling the PDSCH or the PUSCH, bits in the frequency domain resource allocation domain of the DCI are not all zero, that is, the PDSCH or the PUSCH needs to occupy a certain frequency domain resource, the terminal device may consider the first information to be normal scheduling information, and then the bits in the time domain resource allocation domain represent the time domain position of the currently scheduled PDSCH or PUSCH.

When all the bits of the frequency domain resource allocation domain of the first information are zero, it may be considered that the first information is not scheduling information of the current PDSCH or PUSCH, and then the bits of the time domain resource allocation domain represent the second time domain resource allocation set.

The first time domain resource allocation set may also be a subset of the second time domain resource allocation set, or the second time domain resource allocation set may also be a subset of the first time domain resource allocation set.

In particular, the bits of the time domain resource allocation field represent the minimum slot offset value or an index of the minimum slot offset value of the second set of time domain resource allocations. Then S302 includes: and when the bits of the frequency domain resource allocation domain of the first PDCCH are all zero, determining the minimum time slot offset value or the index of the minimum time slot offset value of the second PDSCH or the second PUSCH according to the bits of the time domain resource allocation domain of the first PDCCH. For example, when the bit of the time domain resource allocation field indicates that the minimum slot offset value is 0, then it may be determined that the slot offset value in the second time domain resource allocation set is greater than or equal to 0; when the bits of the time domain resource allocation field indicate that the minimum slot offset value is a certain value greater than 0, it may be determined that the slot offset value in the second time domain resource allocation set is greater than 0.

The frequency domain resource allocation is exemplified by Type0, a Resource Block Group (RBG) allocated to a terminal device is indicated by a bitmap (bitmap) (an RBG may be composed of a plurality of RBs), if a certain RBG is allocated to a certain terminal device, the corresponding bit in the bitmap is 1; otherwise, it is set to 0.

For example, RBGSize is 2, there are 13 RBGs, and if the corresponding BitMap field is 0000111111011B (binary), the occupied RBG is as shown in fig. 9 a. Fig. 9a is a schematic diagram of indicating PDSCH or PUSCH frequency domain resources through the frequency domain resource allocation domain of DCI. If the DCI scheduled PDSCH/PUSCH indicates at least one RB in the frequency domain, then at least one of the bitmaps is not 0. Conversely, if the terminal device detects that the frequency domain resource allocation bitmap of the DCI is all 0, that is, 0000000000000, the terminal device considers that the DCI is used to determine the first time domain resource allocation set for scheduling the second PDSCH or the second PUSCH after the first time, and the field of the corresponding time domain resource allocation field is understood as the minimum slot offset or the index corresponding to the minimum slot offset.

And S303, scheduling a second PDSCH or a second PUSCH according to the determined second time domain resource allocation set at a second time, wherein the second time is after the first time.

And at a second time, scheduling the second PDCCH according to the determined second time domain resource allocation set. The second set of time domain resource allocations may be a different set than the first set of time domain resource allocations. For example, at a first time, scheduling is performed according to a first time domain resource allocation set, and a time slot offset value in the first time domain resource allocation set is greater than or equal to 0, that is, scheduling can be performed in the same time slot; at a second time, the time slot offset value in the second time domain resource allocation set is greater than 0, i.e. it can be scheduled across time slots. Or conversely, at a first time, the first PDCCH is scheduled according to the first time domain resource allocation set, and a time slot offset value in the first time domain resource allocation set is greater than 0, that is, the time slot can be scheduled in a cross-time slot manner; at the second time, the time slot offset value in the second time domain resource allocation set is greater than or equal to 0, i.e. the scheduling in the same time slot is possible.

In this embodiment, the first information is used to determine that a value range of a time slot offset for scheduling the second PDSCH after the first time is changed, a specific indication manner is not limited, and the first information may be a display indication or an implicit indication; the minimum value of the slot offset may be indicated, and an index value corresponding to the minimum value of the slot offset may also be indicated. The time domain resource allocation set in the present invention can also be embodied as the minimum value of the slot offset.

According to the communication method provided by the embodiment of the application, when the first information is not used for scheduling, the time domain resource allocation set can be indicated through the bit of the time domain resource allocation domain of the first information, so that the time domain resource allocation set adopted in different time can be explicitly indicated according to actual needs, power consumption and transmission delay of the terminal equipment are considered, meanwhile, the problem that behaviors of the network equipment and the terminal equipment are inconsistent due to missed detection of the terminal equipment is avoided, and reliability of dynamically switching the time domain resource allocation set is ensured.

Generally, the first field of the downlink control information is used for scheduling data, and in the present application, the first field of the downlink control information may be multiplexed to determine the minimum timeslot offset value.

Fig. 10 is a flowchart of another communication method provided in an embodiment of the present application, which may include the following steps, for example:

s401, the network equipment sends downlink control information to the terminal equipment.

Accordingly, the terminal device receives the downlink control information.

Wherein the downlink control information is carried in the PDCCH.

S402, the terminal equipment determines the minimum time slot offset value according to the first domain of the downlink control information.

The downlink control information has a corresponding first field, which may be referred to as a field of uplink grant (scheduled PUSCH) or a field of downlink assignment (scheduled PDSCH) if the downlink control information is used for data scheduling. In this application, the downlink control information is not used for data scheduling, but the first field is multiplexed for determining a minimum slot offset value, which may also be referred to as a minimum value of slot offset. Wherein, the minimum slot offset value represents the minimum available slot offset value (minimum K0) for receiving PDSCH or the minimum available slot offset value (minimum K2) for transmitting PUSCH, that is, when there is actual scheduling, the network device uses the minimum slot offset to schedule PDSCH or PUSCH, that is, when the network device schedules PDSCH or PUSCH, the slot offset value of the PDSCH or PUSCH is greater than or equal to the minimum slot offset value, and the slot offset value of the terminal device for receiving PDSCH or transmitting PUSCH is greater than or equal to the minimum slot offset value. The minimum slot offset value may also represent a minimum available slot offset value for receiving an aperiodic CSI-RS or a minimum available slot offset value for an aperiodic SRS or a minimum available slot offset value for HARQ-ACK feedback corresponding to a PDSCH.

Wherein the first domain includes at least one of: a frequency domain resource allocation field, a time domain resource allocation field, a Modulation and Coding Scheme (MCS) field, a New Data Indicator (NDI) field, or a Redundancy Version (RV) field.

Optionally, the downlink control information further includes first indication information, where the first indication information is used to indicate that the first domain carries indication information of a minimum timeslot offset value. I.e., the first field of the above downlink control information may be explicitly indicated for determining the minimum slot offset value, not for data scheduling. For example, the first indication information is a 1-bit value, and when the first indication information is in the first state, it indicates that the first field is used for determining the minimum slot offset value; when the first indication information is in the second state, the first domain is used for data scheduling.

Of course, the first field of the downlink control information may be implicitly indicated to determine the minimum slot offset value instead of being used for data scheduling. For example, if the first field of the downlink control information is a set value, it may be determined that the first field of the downlink control information is used to determine the minimum slot offset value.

Specifically, in one implementation, S402 includes: and when one or more domains in the first domain of the downlink control information are a first set value, acquiring a value of the time domain resource allocation domain, wherein the value of the time domain resource allocation domain is used for indicating the minimum time slot offset value. In this implementation, the values of the time domain resource allocation field may take different values, with different values corresponding to different minimum slot offset values. For example, when the value of the frequency domain resource allocation domain is a preset or predefined specific value, the value of the time domain resource allocation domain represents minimum K0 or minimum K2, and for different frequency domain resource allocation modes, the specific values of the frequency domain resource allocation domain are different, specifically there may be the following cases:

a) the network side device only configures a frequency domain resource allocation mode type 0(type0) through RRC signaling, and indicates Resource Block Groups (RBGs) allocated to the terminal device through a bitmap (a RBG may be composed of multiple RBs), where each bit corresponds to one RBG. If a certain RBG is allocated to a certain terminal device, the corresponding bit in the bitmap is set to 1; otherwise, it is set to 0. As shown in fig. 9a, RBGs 4 to 9 and RBGs 11 to 12 are assigned to a terminal device, and have a bit of 1 and the remaining bits of 0. the bit number of the frequency domain resource allocation domain of type0 is N_RBG，N_RBGEqual to the number of RBGs of the active upstream BWP or the active downstream BWP. As shown in FIG. 9a, N_RBG13. When N is present_RBGWhen the bits are all 0, the bit of the time domain resource allocation field indicates minimum K0 or minimum K2, e.g., N_RBGAs 13, bitmap equals 0000000000000.

b) The network side device allocates only a frequency domain resource allocation type 1(type1) through RRC signaling, allocates a plurality of consecutive Resource Blocks (RBs) to the terminal device, and performs resource allocation in units of RBs. Indicating a resource block starting position RB by a Resource Indication Value (RIV)_startAnd the number L of RB allocated consecutively_RB. Fig. 9b is a schematic diagram of indicating PDSCH or PUSCH frequency domain resources by RIV. the number of bits of the frequency domain resource allocation field of type1 is

Indicating the number of RBs of the active uplink BWP or the active downlink BWP. As shown in figure 9b of the drawings,

then

When in use

When all bits are 1, the bit of the time domain resource allocation field indicates minimum K0 or minimum K2. To be provided with

For example, 7 bits of the bit number of the frequency domain resource allocation domain are 1111111. And if a frequency domain hopping flag (frequency hopping flag) domain also exists in the downlink control information, setting a bit of the frequency domain hopping flag domain as 'disabled'.

c) The network side device configures a frequency domain resource allocation type0 and a frequency domain resource allocation type1 through RRC signaling, so that the number of bits in the frequency domain resource allocation domain is

1 bit of the Most Significant Bit (MSB) of the frequency domain resource allocation field may dynamically indicate whether the current frequency domain resource allocation mode is type0 or type1, a 1 bit of the MSB being "0" indicates that the current frequency domain resource allocation mode is type0, and a 1 bit of the MSB being "1" indicates that the current frequency domain resource allocation mode is type 1. If the frequency domain resource allocation mode of the dynamic indication is type0, N of Least Significant Bit (LSB)_RBGOf one bit or LSB

When all the bits are 0, the bit of the time domain resource allocation field indicates minimum K0 or minimum K2. If the dynamically indicated frequency domain resource allocation mode is type1, LSB

Of one bit or LSB

When all bits are 1, the bit of the time domain resource allocation field indicates minimum K0 or minimum K2. And if the downlink control information also has a frequency domain hopping identification field, setting the bit of the frequency domain hopping identification field as 'de-enable'.

For another example, when the modulation and coding scheme field indicates one of MCS indexes corresponding to the MCS table labeled "reserved", such as MCS indexes 28 to 31, NDI indicates 0, and/or RV indicates 0 in the MCS table illustrated in table 1, the value of the time domain resource allocation field indicates minimum K0 or minimum K2. Which of the first domain is set as the setting value can be determined according to actual needs. It is understood that one or more of the first domains are the first setting values, and the first setting values corresponding to each domain may be the same or different.

TABLE 1

In yet another implementation, S402 includes: and when one or more domains in the first domain of the downlink control information are the first set values, acquiring a pre-configured or predefined minimum time slot offset value. Unlike the foregoing implementation, in the present implementation, the minimum slot offset value is a pre-configured or pre-defined value, and it is not necessary to indicate the minimum slot offset value in the field display in the downlink control information. Accordingly, when one or more of the first domains is a first set value, the minimum slot offset value is determined to be the previously configured or predefined minimum slot offset value.

Optionally, the network device may also determine the minimum timeslot offset value according to the first field of the downlink control information.

In this embodiment, when one or more of the first fields of the downlink control information are the first setting values, the downlink control information does not actually schedule data, but the UE may still feed back HARQ-ACK according to the ACK/NACK resource indicated in the downlink control information, for example, for the downlink control information, the terminal device always feeds back ACK or always feeds back NACK.

According to the communication method provided by the embodiment of the application, the first domain of the multiplexing downlink control information is used for determining the minimum time slot offset value, the bits of the control information are not increased, the overhead of the control information is reduced, and the reliability of a signaling can be improved by combining with HARQ-ACK feedback.

In the prior art, after the network device sends the first downlink control information carrying the minimum timeslot offset value, the minimum timeslot offset value can be applied/validated after a period of time. However, it is possible that the network device sends the second downlink control information to the terminal device before the minimum timeslot offset value carried by the first downlink control information is applied/validated. The first downlink control information and the second downlink control information are both used to indicate a minimum timeslot offset value, and therefore, there is a problem how to determine an actual minimum timeslot offset value by the terminal device.

Fig. 11 is a flowchart of another communication method provided in an embodiment of the present application, which may include the following steps, for example:

s501, the network device sends first downlink control information to the terminal device at a first time.

Accordingly, the terminal device receives the first downlink control information at a first time.

Wherein the first downlink control information is used to indicate a first minimum slot offset value. The manner of determining the first minimum slot offset value according to the first downlink control information may refer to the previous embodiments.

Assuming that the terminal device receives an indication of the first minimum slot offset value at slot n, the terminal device will apply/validate the first minimum slot offset value at slot n + K or after slot n + K. This first minimum slot offset value cannot be used until slot n + K. Where K may be greater than 0.

The network device dynamically switches/indicates the first minimum slot offset value, and there will be a time interval between signaling and the new first minimum slot offset value being in effect, which is called the application time/effect time K. For example, the new first minimum slot offset value is applied/validated only after the terminal device feeds back the HARQ-ACK or after the terminal device sends the PUSCH described in the foregoing embodiment, that is, K depends on the time interval from the downlink control information to the HARQ-ACK feedback or the PUSCH; for another example, K is equal to the old first minimum slot offset value, or stated that the new first minimum slot offset value is not yet in effect, K is the currently effective first minimum slot offset value. The size of K may also relate to PDCCH decoding time. And the time slot in which the indication signaling is positioned after the time interval is added is called as application time or effective time, and the network equipment and the terminal equipment still schedule data according to the old first minimum time slot offset value before the new first minimum time slot offset value takes effect.

Therefore, the terminal device receives the first downlink control information at a first time, the first downlink control information is not applied immediately, and the application time of the first downlink control information is not earlier than a second time. The second time is later than the first time, and a certain time interval is reserved between the second time and the first time.

As shown in fig. 12, the application of the downlink control information is schematically illustrated, the minimum time slot offset value K0 of the currently received PDSCH _min2, and a first DCI is received, the first DCI indicating K0 _min1, first DCI or K0_minThe application time of 1 is the time at which application time 1 ends as shown in the figure, i.e. K0 is still used before application time 1 ends_minAfter application time 1 ends, the new minimum slot offset value is used 2.

Optionally, the starting position of the application time of the new minimum slot offset value may be the symbol where the DCI is located or the starting position of the slot where the DCI is located, or the ending position of the symbol where the DCI is located or the ending position of the slot where the DCI is located.

And S502, the network equipment sends second downlink control information to the terminal equipment at the third moment.

Correspondingly, the terminal equipment receives the second downlink control information at the third moment.

Before the first downlink control information is applied, the terminal device receives new downlink control information, that is, second downlink control information, at a third time. The third time is between the first time and the second time, the second downlink control information is used for indicating a second minimum timeslot offset value, and the application time of the second downlink control information is not earlier than a fourth time.

Still referring to fig. 12 above, after receiving the first DCI, and at the first DCI or K0_minBefore 1 application, a second DCI is received again, the second DCI indicating K0 _min0, second DCI or K0_minThe application time 0 is the time at which the application time 2 ends as shown in the figure, and the application time 2 ends later than the application time 1.

S503, the terminal device determines a used minimum timeslot offset value and an application time of the used minimum timeslot offset value according to the first downlink control information and/or the second downlink control information, where the used minimum timeslot offset value is one of the first minimum timeslot offset value and the second minimum timeslot offset value, and the used application time is not earlier than one of the second time and the fourth time.

In one embodiment, regardless of whether the first minimum slot offset value and the second minimum slot offset value are the same, the terminal device determines that the second minimum slot offset value indicated by the latest DCI (i.e., the second DCI) is the minimum slot offset value used, and determines that the application time of the second minimum slot offset value ends at the application time of the minimum slot offset value used. The timing of the application time of the minimum slot offset value to be used is updated from the start position of the first DCI to the start position of the second DCI, or the application time of the minimum slot offset value to be used is updated from the end position of the first DCI to the end position of the second DCI.

As shown in fig. 12, the minimum slot offset value used for the final determination is K0_minWhen the time of application of the minimum slot offset value is 0, the application time 2 ends.

In another embodiment, if the first minimum slot offset value and the second minimum slot offset value are not the same, the terminal device determines that the second minimum slot offset value indicated by the latest DCI (i.e., the second DCI) is the minimum slot offset value used, and determines that the time at which the application time of the second minimum slot offset value ends is the application time of the minimum slot offset value used.

In still another case, if the first minimum slot offset value and the second minimum slot offset value are the same, the terminal device does not update the application time, still uses the first minimum slot offset value indicated by the first DCI as the minimum slot offset value to be used, and determines that the time at which the application time of the first minimum slot offset value ends as the application time of the minimum slot offset value to be used.

It is understood that the flows of this embodiment and the embodiment shown in fig. 10 may be independent of each other or may be combined together. The embodiment shown in fig. 10 mainly describes how to determine the minimum slot offset value to be used, and fig. 11 describes the application time of determining the minimum slot offset value to be used in addition to how to determine the minimum slot offset value to be used.

According to a communication method provided in an embodiment of the present application, if second downlink control information is received before the first downlink control information is applied/validated, a minimum timeslot offset value to be used and an application time of the minimum timeslot offset value to be used are determined according to the first downlink control information and/or the second downlink control information, so as to resolve a conflict between the minimum timeslot offset values indicated by a plurality of downlink control information.

If the terminal device supports configuring multiple bandwidth parts (BWPs), the time domain resource allocation sets of different BWPs are different, and the minimum slot offset value of the first BWP is not necessarily applicable to the second BWP. The network device can switch BWP while scheduling data, and the problem of how to indicate the minimum slot offset value of the switched BWP needs to be solved.

Fig. 13 is a flowchart of another communication method provided in an embodiment of the present application, which may include the following steps:

s601, the network device transmits downlink control information on the first bandwidth part, where the downlink control information includes a slot offset value and BWP indication information.

Accordingly, the terminal device receives the downlink control information on the first BWP.

If the network device configures a plurality of BWPs to the terminal device, the network device may switch the BWPs while scheduling data. The network device transmits first DCI on a first BWP, wherein the first DCI comprises a slot offset value for scheduling PDSCH or PUSCH and BWP identification indication information. The BWP identification indication information indicates an identification of BWP for PDSCH or PUSCH data transmission. If the BWP identification indication information includes the identification of the first BWP, the switching of BWP is not performed, and the data transmission is still performed at the first BWP and the terminal device is still operating at the first BWP; if the BWP identification indication information includes the identification of other BWPs, for example, the identification of the second BWP, it indicates that the terminal device will switch to the second BWP, i.e., the second BWP is activated, and the terminal device will operate on the second BWP to perform data transmission on the second BWP.

S602, when the BWP identification indication information indicates a second BWP, the terminal device takes the slot offset value as the minimum slot offset value of the second BWP.

When the BWP indication information indicates the second BWP, that is, the terminal device is to be switched from the first BWP to the second BWP for data transmission, the terminal device still uses the slot offset value indicated by the first DCI as the minimum slot offset value of the second BWP. Accordingly, the network device takes the slot offset value indicated in the first DCI as the minimum slot offset value of the second BWP. In this way, the network device does not need to send control information on the second BWP to re-indicate the minimum slot offset value of the second BWP after the second BWP is activated, which saves signaling overhead and improves communication efficiency.

Specifically, the downlink control information is further used to instruct the terminal device to receive the PDSCH or transmit the PUSCH on the second BWP at the first time, and accordingly, the network device transmits the PDSCH or receives the PUSCH on the second BWP at the first time. And the first time is the time slot in which the time slot offset value indicated by the first DCI is added to the receiving time slot of the downlink control information. For example, if the terminal device receives DCI in a slot n, the first time is n plus a slot where shift is located, where shift is a slot offset value of the PDSCH or PUSCH scheduled by the first DCI.

Optionally, in a further embodiment, when the BWP indication information indicates a first BWP, if the slot offset value is smaller than the minimum slot offset value of the first BWP, the network device transmits the PDSCH or receives the PUSCH at a second time, and accordingly, the terminal device receives the PDSCH or transmits the PUSCH at the second time. And the second time is the time slot in which the minimum time slot offset value of the first BWP is added to the receiving time slot of the downlink control information. And the terminal device takes the time slot offset value as a new minimum time slot offset value of the first BWP, namely, the terminal device updates the minimum time slot offset value of the first BWP to the time slot offset value. The new minimum slot offset worth application time or validation time may refer to the previous embodiments.

That is to say, BWP is not switched, and at the current second time, the minimum slot offset value of the first BWP is used for data transmission, and the transmission slot of the PDSCH or PUSCH scheduled by the DCI is the slot where the receiving slot of the DCI plus the minimum slot offset value of the first BWP is located.

Optionally, in another embodiment, when the BWP indication information indicates the second BWP, if the timeslot offset value of the PDSCH or PUSCH scheduled by the downlink control information is smaller than the latency required for BWP handover, and the latency required for BWP handover may also be represented as the timeslot required for BWP handover, performing data transmission on the slot where the slot number of the timeslot required for BWP handover is added to the receiving slot of the downlink control information. Therefore, if the time slot offset value is smaller than the time delay required by BWP handover, the network device sends the PDSCH or receives the PUSCH on the time slot where the time slot required by BWP handover is added to the receiving time slot of the downlink control information. Correspondingly, the terminal equipment receives the PDSCH or transmits the PUSCH on the time slot where the time slot of the receiving time slot of the downlink control information plus the time slot needed by the BWP switching is located. For example, as shown in the BWP handover diagram of fig. 14, the terminal device receives DCI at a first BWP in a slot n, where the BWP identification indication information of the DCI indicates a second BWP, the slot offset value indicated by the DCI is X, where X is smaller than M, and then the terminal device receives PDSCH or transmits PUSCH in a slot where n plus M is located, where M is a slot required for BWP handover.

As shown in the BWP handover diagram of fig. 14, taking downlink scheduling as an example, if the slot offset value indicated in the DCI on BWP1 is smaller than BWP handover delay M, the terminal device receives PDSCH on BWP2 at the slot where the DCI reception slot plus the handover delay M slots is located, and takes the slot offset value as the minimum slot offset value of DCI-scheduled PDSCH on BWP 2.

It is to be understood that the flow of the embodiment shown in fig. 13 may also be operated independently of the flow of the previous embodiment, or may be operated in combination.

According to the communication method provided by the embodiment of the application, when the BWP is dynamically switched, the minimum slot offset value of the target BWP can be indicated at the same time, no new bit needs to be added, and the scheduling opportunity is not affected to reduce the transmission delay. When BWP does not switch, the minimum slot offset value can be updated from a larger value to a smaller value without affecting the scheduling opportunity and reducing transmission delay without adding new bit field. The foregoing embodiments may be employed if the base station and the UE desire to switch the minimum slot offset value from a smaller value to a larger value.

The method of the embodiments of the present application is set forth above in detail and the apparatus of the embodiments of the present application is provided below.

Based on the same concept of the communication method in the foregoing embodiment, as shown in fig. 15, an embodiment of the present application further provides a communication device 100, where the communication device 100 is applicable to the communication methods shown in fig. 2, fig. 6, fig. 8, fig. 10, fig. 11, and fig. 13. The communication apparatus 100 may be the terminal device shown in fig. 1, or may be a component (e.g., a chip) applied to the terminal device. The communication device 100 includes a transceiver unit 11 and a processing unit 12.

Exemplarily, in an embodiment, the transceiver unit 11 is configured to receive first information from a network device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH schedules a first physical downlink shared channel PDSCH according to a first set of time domain resource allocations at the first time, and the first information is used to determine a second set of time domain resource allocations for scheduling a second PDSCH after the first time; the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH;

the transceiver unit 11 is further configured to receive data sent by the network device through the first PDSCH;

the transceiver unit 11 is further configured to send feedback information of the data to the network device;

and a processing unit 12, configured to schedule the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is sent, where the second time is after the first time.

In one implementation, the first PDCCH carrying the first information does not include scheduling information of the first PDSCH;

the transceiver unit 11 is further configured to send feedback information of the first PDCCH to the network device;

the processing unit 12 is further configured to schedule the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is sent.

More detailed descriptions about the transceiver 11 and the processing unit 12 can be obtained by referring to the description about the terminal device in the embodiment of the method shown in fig. 2, which is not repeated herein. The transmitting/receiving unit may be an integrated device having a transmitting/receiving function, or may be an independent receiving unit having a receiving function and a transmitting unit having a transmitting function, and may be logically referred to as a "transmitting/receiving unit".

In another embodiment, the apparatus includes a transceiver unit 11 configured to receive first information from a network device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH includes scheduling information of a first physical uplink shared channel, PUSCH, and the first PUSCH is scheduled according to a first time domain resource allocation set at the first time, and the first information is used to determine a second time domain resource allocation set for scheduling a second PUSCH after the first time;

the transceiver unit 11 is further configured to transmit data to the network device through the first PUSCH according to the scheduling information of the first PUSCH;

a processing unit 12, configured to schedule the second PUSCH according to the second time domain resource allocation set in a second time after the data is transmitted, where the second time is after the first time.

More detailed descriptions about the transceiver 11 and the processing unit 12 may be obtained by referring to the description about the terminal device in the embodiment of the method shown in fig. 6, which is not repeated herein.

In another embodiment, the transceiver unit 11 is configured to receive first information from a network device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, and the first PDCCH schedules a first physical downlink shared channel PDSCH or a first physical uplink shared channel PUSCH according to a first time domain resource allocation set at the first time;

a processing unit 12, configured to determine, according to bits of the time domain resource allocation domain of the first PDCCH, a second time domain resource allocation set used for scheduling a second PDSCH or a second PUSCH after the first time when all bits of the frequency domain resource allocation domain of the first PDCCH are zero;

the processing unit 12 is further configured to schedule the second PDSCH or the second PUSCH at a second time according to the determined first time domain resource allocation set, where the second time is after the first time.

In one implementation, the processing unit 12 is configured to determine, when all bits of the frequency domain resource allocation field of the first PDCCH are zero, a minimum slot offset value or an index of the minimum slot offset value of the first time domain resource allocation set according to the bits of the time domain resource allocation field of the first PDCCH.

More detailed descriptions about the transceiver unit 11 and the processing unit 12 can be obtained by referring to the description about the terminal device in the embodiment of the method shown in fig. 8, which is not repeated herein.

Exemplarily, in yet another embodiment, the transceiving unit 11 is configured to receive first downlink control information from a network device, where the first downlink control information is carried in a first physical downlink control channel PDCCH; a processing unit 12, configured to determine a first minimum timeslot offset value according to a first field of the first downlink control information, where the first field includes at least one of: a frequency domain resource allocation domain, a time domain resource allocation domain, a modulation coding mode domain, a new data indication domain or a redundancy version domain; the first minimum time slot offset value represents the minimum available time slot offset value for receiving a Physical Downlink Shared Channel (PDSCH) or transmitting a Physical Uplink Shared Channel (PUSCH).

In one implementation, the first downlink control information further includes first indication information, where the first indication information is used to indicate that the first domain carries indication information of a first minimum timeslot offset value.

In yet another implementation, the processing unit 12 is configured to obtain a value of the time domain resource allocation field when one or more fields in the first field of the first downlink control information are the first set values, where the value of the time domain resource allocation field is used to indicate the first minimum timeslot offset value.

In yet another implementation, the processing unit 12 is configured to obtain a preconfigured or predefined first minimum timeslot offset value when one or more of the first fields of the first downlink control information are first setting values.

More detailed descriptions about the transceiver 11 and the processing unit 12 can be obtained by referring to the description about the terminal device in the embodiment of the method shown in fig. 10, which is not repeated herein.

Exemplarily, in yet another embodiment, the transceiver unit 11 is configured to receive the first downlink control information at a first time, where the first downlink control information is used to indicate a first minimum slot offset value, and an application time of the first downlink control information is not earlier than a second time; the transceiver unit 11 is further configured to receive second downlink control information at a third time, where the third time is between the first time and the second time, the second downlink control information is used to indicate a second minimum timeslot offset value, and an application time of the second downlink control information is not earlier than a fourth time; and a processing unit 12, configured to determine, according to the first downlink control information and/or the second downlink control information, a used minimum timeslot offset value and an application time of the used minimum timeslot offset value, where the used minimum timeslot offset value is one of the first minimum timeslot offset value and the second minimum timeslot offset value, and the used application time is not earlier than one of the second time and the fourth time.

More detailed descriptions about the transceiver unit 11 and the processing unit 12 may be obtained by referring to the description about the terminal device in the embodiment of the method shown in fig. 11, which is not repeated herein.

Exemplarily, in yet another embodiment, the transceiving unit 11 is configured to receive downlink control information on a first bandwidth portion BWP, where the downlink control information includes a slot offset value and BWP identification indication information; and a processing unit 12 configured to take the slot offset value as a minimum slot offset value of a second BWP when the BWP indication information indicates the second BWP.

In yet another implementation, the transceiver unit 11 is configured to, when the BWP indication information indicates a first BWP, receive the PDSCH or transmit the PUSCH at a second time if the slot offset value is smaller than a minimum slot offset value of the first BWP, where the second time is a slot where a slot of the downlink control information plus the minimum slot offset value of the first BWP is located; and the processing unit 12 is configured to use the slot offset value as a new minimum slot offset value for the first BWP.

In yet another implementation, the transceiver unit 11 is configured to receive the PDSCH or transmit the PUSCH in a slot of a reception slot of the downlink control information plus a delay required for BWP handover if the slot offset value is smaller than the delay required for BWP handover.

More detailed descriptions about the transceiver unit 11 and the processing unit 12 can be obtained by referring to the description about the terminal device in the embodiment of the method shown in fig. 13, which is not repeated herein.

Based on the same concept of the communication method in the foregoing embodiment, as shown in fig. 16, the present embodiment further provides a communication apparatus 200, and the communication apparatus 200 may be applied to the communication methods shown in fig. 2, fig. 6, and fig. 8. The communication apparatus 100 may be a network device as shown in fig. 1, or may be a component (e.g., a chip) applied to the network device. The communication device 200 includes a transceiver unit 21 and a processing unit 22.

Exemplarily, in an embodiment, the transceiver unit 21 is configured to transmit first information to a terminal device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH schedules a first physical downlink shared channel PDSCH according to a first time domain resource allocation set at the first time, and the first information is used to determine a second time domain resource allocation set for scheduling a second PDSCH after the first time; the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH;

the transceiver unit 21 is further configured to transmit data to the terminal device through the first PDSCH;

the transceiver unit 21 is further configured to receive feedback information of the data from the terminal device;

a processing unit 22, configured to schedule the second PDSCH according to the second time domain resource allocation set at a second time after receiving the feedback information of the data, where the second time is after the first time.

the transceiver unit 21 is further configured to receive feedback information of the first PDCCH from the terminal device;

the processing unit 22 is further configured to schedule the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is received.

More detailed descriptions about the transceiver unit 21 and the processing unit 22 may be obtained by referring to the description about the network device in the embodiment of the method shown in fig. 2, which is not repeated herein. The transmitting/receiving unit may be an integrated device having a transmitting/receiving function, or may be an independent receiving unit having a receiving function and a transmitting unit having a transmitting function, and may be logically referred to as a "transmitting/receiving unit".

In another exemplary embodiment, the transceiver unit 21 is configured to transmit first information to a terminal device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH includes scheduling information of a first physical uplink shared channel, PUSCH, and the first PUSCH is scheduled according to a first time domain resource allocation set at the first time, and the first information is used to determine a second time domain resource allocation set for scheduling a second PUSCH after the first time;

the transceiver unit 21 is further configured to receive data sent by the terminal device through the first PUSCH;

a processing unit 22, configured to schedule the second PUSCH according to the second set of time domain resource allocations at a second time after receiving the data, where the second time is after the first time.

More detailed descriptions about the transceiver unit 21 and the processing unit 22 may be obtained by referring to the description about the network device in the embodiment of the method shown in fig. 6, which is not repeated herein.

In an exemplary embodiment, the transceiver unit 21 is configured to transmit first information to a terminal device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH schedules a first physical downlink shared channel PDSCH or a first physical uplink shared channel PUSCH according to a first time domain resource allocation set at the first time, bits of a frequency domain resource allocation field of the first PDCCH are all zero, and bits of a time domain resource allocation field of the first PDCCH are used to determine a second time domain resource allocation set used for scheduling a second PDSCH or a second PUSCH after the first time;

a processing unit 22, configured to schedule the second PDSCH or the second PUSCH at a second time according to the determined first time domain resource allocation set, where the second time is after the first time.

More detailed descriptions about the transceiver unit 21 and the processing unit 22 may be obtained by referring to the description about the network device in the embodiment of the method shown in fig. 8, which is not repeated herein.

In another embodiment, the transceiver unit 21 is configured to transmit first downlink control information, where the first downlink control information is carried in a first physical downlink control channel PDCCH, and a first field of the first downlink control information is used to determine a first minimum slot offset value, where the first field includes at least one of: the first minimum time slot deviant is used for expressing the minimum available time slot deviant for sending a Physical Downlink Shared Channel (PDSCH) or receiving a Physical Uplink Shared Channel (PUSCH).

More detailed descriptions about the transceiver unit 21 and the processing unit 22 may be obtained by referring to the description about the network device in the embodiment of the method shown in fig. 10, which is not repeated herein.

Exemplarily, in yet another embodiment, the transceiving unit 21 is configured to transmit the first downlink control information at a first time, wherein an application time of the first information is not earlier than a second time; the transceiver unit 21 is further configured to send and receive second downlink control information at a third time, where the third time is between the first time and the second time, the second downlink control information is used to indicate a second minimum timeslot offset value, and an application time of the second downlink control information is not earlier than a fourth time; and a processing unit 22, configured to determine a used minimum timeslot offset value and an application time of the used minimum timeslot offset value according to the first downlink control information and/or the second downlink control information, where the used minimum timeslot offset value is one of the first minimum timeslot offset value and the second minimum timeslot offset value, and the used application time is not earlier than one of the second time and the fourth time.

More detailed descriptions about the transceiver unit 21 and the processing unit 22 may be obtained by referring to the description about the network device in the embodiment of the method shown in fig. 11, which is not repeated herein.

Exemplarily, in yet another embodiment, the transceiving unit 21 is configured to transmit downlink control information on a first bandwidth portion BWP, where the downlink control information includes a slot offset value and BWP indication information; and a processing unit 22 configured to take the slot offset value as a minimum slot offset value of a second BWP when the BWP indication information indicates the second BWP.

In yet another implementation, the transceiver unit 21 is configured to, when the BWP indication information indicates a first BWP, transmit the PDSCH or receive the PUSCH at a second time if the slot offset value is smaller than a minimum slot offset value of the first BWP, where the second time is a slot where a slot of the downlink control information plus the minimum slot offset value of the first BWP is located; and the processing unit 22 is configured to use the slot offset value as a new minimum slot offset value for the first BWP.

In yet another implementation, the transceiver unit 21 is configured to transmit the PDSCH or receive the PUSCH in a slot of a reception slot of the downlink control information plus a delay required for BWP handover if the slot offset value is smaller than the delay required for BWP handover.

More detailed descriptions about the transceiver unit 21 and the processing unit 22 may be obtained by referring to the description about the network device in the embodiment of the method shown in fig. 13, which is not repeated herein.

The embodiment of the application also provides a communication device, and the communication device is used for executing the communication method. Some or all of the above communication methods may be implemented by hardware or may be implemented by software.

Alternatively, the communication device may be a chip or an integrated circuit when embodied.

Optionally, when part or all of the communication method of the foregoing embodiment is implemented by software, the communication apparatus includes: the processor is used for executing the program, when the program is executed, the communication device can realize the communication method provided by the above embodiment, the communication device can also comprise a memory for storing necessary programs, and the related programs can be loaded into the memory when the communication device leaves the factory, and can also be loaded into the memory when needed at a later time.

Alternatively, the memory may be a physically separate unit or may be integrated with the processor.

Alternatively, when part or all of the communication method of the above embodiments is implemented by software, the communication apparatus may include only a processor. The memory for storing the program is located outside the communication device and the processor is connected to the memory by means of a circuit/wire for reading and executing the program stored in the memory.

The processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.

Alternatively, the processor may comprise a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.

The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile) such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

Fig. 17 shows a simplified schematic diagram of a terminal device. For easy understanding and convenience of illustration, in fig. 17, the terminal device is exemplified by a mobile phone. As shown in fig. 17, the terminal device includes a processor, and may further include a radio frequency circuit, an antenna, and an input-output device. The processor may be configured to process a communication protocol and communication data, and may be further configured to control the terminal device, execute a software program, process data of the software program, and the like. The terminal device may further comprise a memory, which is mainly used for storing software programs and data, and these related programs may be loaded into the memory at the time of shipment of the communication apparatus, or may be loaded into the memory at a later time when needed. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 17. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, an antenna and a radio frequency circuit having a transceiving function may be regarded as a receiving unit and a transmitting unit (which may also be collectively referred to as a transceiving unit) of a terminal device, and a processor having a processing function may be regarded as a processing unit of the terminal device. As shown in fig. 17, the terminal device includes a receiving unit 31, a processing unit 32, and a transmitting unit 33. The receiving unit 31 may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit 33 may also be referred to as a transmitter, a transmitting circuit, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like.

For example, in one embodiment, the receiving unit 31 is configured to perform the functions of the terminal device in steps S101 and S102 of the embodiment shown in fig. 2; the transmitting unit 33 is configured to execute the functions of the terminal device in step S103 in the embodiment shown in fig. 2; and the processing unit 32 is adapted to perform step S104 of the embodiment shown in fig. 2.

For example, in another embodiment, the receiving unit 31 is configured to execute the functions of the terminal device in step S201 of the embodiment shown in fig. 6; the transmitting unit 33 is configured to execute the functions of the terminal device in step S202 in the embodiment shown in fig. 6; and the processing unit 32 is configured to perform step S203 of the embodiment shown in fig. 6.

For example, in a further embodiment, the receiving unit 31 is configured to perform the functions of the terminal device in step S301 of the embodiment shown in fig. 8; and the processing unit 32 is adapted to perform steps S302 and S303 of the embodiment shown in fig. 8.

For example, in yet another embodiment, the receiving unit 31 is configured to execute the functions of the terminal device in step S401 of the embodiment shown in fig. 10; and the processing unit 32 is adapted to perform step S402 of the embodiment shown in fig. 10.

For example, in yet another embodiment, the receiving unit 31 is configured to execute the functions of the terminal device in steps S501 and S502 of the embodiment shown in fig. 11; and the processing unit 32 is configured to perform step S503 of the embodiment shown in fig. 11.

For example, in yet another embodiment, the receiving unit 31 is configured to perform step S601 of the embodiment shown in fig. 12; and the processing unit 32 is configured to perform step S602 of the embodiment shown in fig. 12.

Fig. 18 shows a simplified schematic diagram of a network-side device. The network side device includes a radio frequency signal transceiving and converting portion and a portion 42, and the radio frequency signal transceiving and converting portion includes a receiving unit 41 portion and a transmitting unit 43 portion (which may also be collectively referred to as a transceiving unit). The radio frequency signal receiving, transmitting and converting part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 42 part is mainly used for baseband processing, control of network side equipment and the like. The receiving unit 41 may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit 43 may also be referred to as a transmitter, a transmitting circuit, etc. Part 42 is generally a control center of the network side device, and may be generally referred to as a processing unit, for controlling the network side device to execute the steps performed with respect to the network side device in fig. 4, 6, and 8. Reference is made in particular to the description of the relevant part above.

Section 42 may include one or more boards, each board may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the network side devices. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

For example, in one embodiment, the sending unit 43 is configured to perform the functions of the network device in steps S101 and S102 of the embodiment shown in fig. 2; and the receiving unit 41 is configured to perform the functions of the network device in step S103 of the embodiment shown in fig. 2.

For example, in a further embodiment, the sending unit 43 is configured to perform the function of the network device in step S201 of the embodiment shown in fig. 6; and the receiving unit 41 is configured to perform the functions of the network device in step S202 of the embodiment shown in fig. 6.

For example, in a further embodiment, the sending unit 43 is configured to perform the functions of the network device in step S301 of the embodiment shown in fig. 8.

For example, in a further embodiment, the sending unit 43 is configured to perform the functions of the network device in step S401 of the embodiment shown in fig. 10.

For example, in a further embodiment, the sending unit 43 is configured to perform the functions of the network device in steps S501 and S502 of the embodiment shown in fig. 11.

For example, in a further embodiment, the sending unit 43 is configured to perform the functions of the network device in step S601 of the embodiment shown in fig. 12.

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

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

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

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).

Claims

1. A method of communication, the method comprising:

receiving first information from network equipment at a first time, wherein the first information is carried in a first Physical Downlink Control Channel (PDCCH), the first PDCCH schedules a first Physical Downlink Shared Channel (PDSCH) according to a first time domain resource allocation set at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PDSCH after the first time; the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH;

receiving data transmitted by the network device through the first PDSCH;

sending feedback information of the data to the network equipment;

and scheduling the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is sent, wherein the second time is after the first time.

2. The method of claim 1, wherein the first PDCCH carrying the first information does not include scheduling information of the first PDSCH, the method further comprising:

sending feedback information of the first PDCCH to the network equipment;

and scheduling the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is sent.

3. A method of communication, the method comprising:

sending first information to terminal equipment at a first time, wherein the first information is carried in a first Physical Downlink Control Channel (PDCCH), the first PDCCH schedules a first Physical Downlink Shared Channel (PDSCH) according to a first time domain resource allocation set at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PDSCH after the first time; the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH;

transmitting data to the terminal device through the first PDSCH;

receiving feedback information of the data from the terminal equipment;

scheduling the second PDSCH according to the second time domain resource allocation set at a second time after receiving the feedback information of the data, wherein the second time is after the first time.

4. The method of claim 3, wherein the first PDCCH carrying the first information does not include scheduling information of the first PDSCH, the method further comprising:

receiving feedback information of the first PDCCH from the terminal equipment;

and scheduling the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is received.

5. A method of communication, the method comprising:

receiving first information from a network device at a first time, wherein the first information is carried in a first Physical Downlink Control Channel (PDCCH), the first PDCCH comprises scheduling information of a first Physical Uplink Shared Channel (PUSCH), the first PUSCH is scheduled according to a first time domain resource allocation set at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PUSCH after the first time;

sending data to the network equipment through the first PUSCH according to the scheduling information of the first PUSCH;

scheduling the second PUSCH according to the second set of time domain resource allocations for a second time after the data is transmitted, wherein the second time is after the first time.

6. A method of communication, the method comprising:

sending first information to a terminal device at a first time, wherein the first information is carried in a first Physical Downlink Control Channel (PDCCH), the first PDCCH comprises scheduling information of a first Physical Uplink Shared Channel (PUSCH), the first PUSCH is scheduled according to a first time domain resource allocation set at the first time, and the first information is used for determining a second time domain resource allocation set for scheduling a second PUSCH after the first time;

receiving data sent by the terminal equipment through the first PUSCH;

scheduling the second PUSCH according to the second set of time domain resource allocations at a second time after the data is received, wherein the second time is after the first time.

7. The method of any of claims 1-6, wherein the first set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than or equal to 0, and wherein the second set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than 0; or

The first set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than 0, and the second set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than or equal to 0.

8. A method of communication, the method comprising:

receiving first information from network equipment at a first time, wherein the first information is carried on a first Physical Downlink Control Channel (PDCCH), and the first PDCCH schedules a first Physical Downlink Shared Channel (PDSCH) or a first Physical Uplink Shared Channel (PUSCH) according to a first time domain resource allocation set at the first time;

when the bits of the frequency domain resource allocation domain of the first PDCCH are all zero, determining a second time domain resource allocation set for scheduling a second PDSCH or a second PUSCH after the first time according to the bits of the time domain resource allocation domain of the first PDCCH;

scheduling the second PDSCH or the second PUSCH according to the determined first set of time domain resource allocations at a second time, wherein the second time is subsequent to the first time.

9. The method of claim 8, wherein determining a second set of time domain resource allocations for scheduling a second PDSCH or a second PUSCH after the first time according to bits of a time domain resource allocation field of the first PDCCH when the bits of the frequency domain resource allocation field of the first PDCCH are all zero comprises:

when all bits of the frequency domain resource allocation domain of the first PDCCH are zero, determining the minimum time slot offset value or the index of the minimum time slot offset value of the first time domain resource allocation set according to the bits of the time domain resource allocation domain of the first PDCCH.

10. A method of communication, the method comprising:

sending first information to a terminal device at a first time, wherein the first information is carried on a first Physical Downlink Control Channel (PDCCH), the first PDCCH schedules a first Physical Downlink Shared Channel (PDSCH) or a first Physical Uplink Shared Channel (PUSCH) according to a first time domain resource allocation set at the first time, bits of a frequency domain resource allocation domain of the first PDCCH are all zero, and the bits of the time domain resource allocation domain of the first PDCCH are used for determining a second time domain resource allocation set used for scheduling a second PDSCH or a second PUSCH after the first time;

scheduling the second PDSCH or a second PUSCH according to the determined first set of time domain resource allocations at a second time, wherein the second time is subsequent to the first time.

11. A communications apparatus, the apparatus comprising:

a transceiver unit, configured to receive first information from a network device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH schedules a first physical downlink shared channel PDSCH according to a first time domain resource allocation set at the first time, where the first information is used to determine a second time domain resource allocation set for scheduling a second PDSCH after the first time; the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH;

the transceiver unit is further configured to receive data sent by the network device through the first PDSCH;

the transceiver unit is further configured to send feedback information of the data to the network device;

and a processing unit, configured to schedule the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is sent, where the second time is after the first time.

12. The apparatus of claim 11, wherein the first PDCCH carrying the first information does not include scheduling information for the first PDSCH;

the transceiver unit is further configured to send feedback information of the first PDCCH to the network device;

the processing unit is further configured to schedule the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is sent.

13. A communications apparatus, the apparatus comprising:

a transceiver unit, configured to send first information to a terminal device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and at the first time, the first PDCCH schedules a first physical downlink shared channel PDSCH according to a first time domain resource allocation set, and the first information is used to determine a second time domain resource allocation set for scheduling a second PDSCH after the first time; the first PDCCH carrying the first information further comprises scheduling information of the first PDSCH;

the transceiver unit is further configured to transmit data to the terminal device through the first PDSCH;

the transceiver unit is further configured to receive feedback information of the data from the terminal device;

and a processing unit, configured to schedule the second PDSCH according to the second time domain resource allocation set at a second time after receiving the feedback information of the data, where the second time is after the first time.

14. The apparatus of claim 13, wherein the first PDCCH carrying the first information does not include scheduling information for the first PDSCH;

the transceiver unit is further configured to receive feedback information of the first PDCCH from the terminal device;

the processing unit is further configured to schedule the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is received.

15. A communications apparatus, the apparatus comprising:

a transceiver unit, configured to receive first information from a network device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, the first PDCCH includes scheduling information of a first physical uplink shared channel, PUSCH, and the first PUSCH is scheduled at the first time according to a first time domain resource allocation set, and the first information is used to determine a second time domain resource allocation set for scheduling a second PUSCH after the first time;

the transceiver unit is further configured to transmit data to the network device through the first PUSCH according to the scheduling information of the first PUSCH;

a processing unit, configured to schedule the second PUSCH according to the second set of time domain resource allocations in a second time after the data is transmitted, where the second time is after the first time.

16. A communications apparatus, the apparatus comprising:

a transceiving unit, configured to send first information to a terminal device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, the first PDCCH includes scheduling information of a first physical uplink shared channel PUSCH, and the first PUSCH is scheduled according to a first time domain resource allocation set at the first time, and the first information is used to determine a second time domain resource allocation set for scheduling a second PUSCH after the first time;

the transceiver unit is further configured to receive data sent by the terminal device through the first PUSCH;

a processing unit configured to schedule the second PUSCH according to the second set of time domain resource allocations at a second time after the data is received, wherein the second time is after the first time.

17. The apparatus of any of claims 11-16, wherein the first set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than or equal to 0, and wherein the second set of time domain resource allocations includes one or more slot offset values, the slot offset values being greater than 0; or

18. A communications apparatus, the apparatus comprising:

a transceiving unit, configured to receive first information from a network device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH schedules a first physical downlink shared channel PDSCH or a first physical uplink shared channel PUSCH according to a first time domain resource allocation set at the first time;

a processing unit, configured to determine, according to bits of a time domain resource allocation domain of the first PDCCH, a second time domain resource allocation set used for scheduling a second PDSCH or a second PUSCH after the first time when all bits of the frequency domain resource allocation domain of the first PDCCH are zero;

the processing unit is further configured to schedule the second PDSCH or the second PUSCH at a second time according to the determined first time domain resource allocation set, where the second time is after the first time.

19. The apparatus of claim 18, wherein the processing unit is configured to determine the minimum slot offset value or an index of the minimum slot offset value of the first time domain resource allocation set according to bits of a time domain resource allocation field of the first PDCCH when the bits of the frequency domain resource allocation field of the first PDCCH are all zero.

20. A communications apparatus, the apparatus comprising:

a transceiver unit, configured to send first information to a terminal device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH schedules a first physical downlink shared channel PDSCH or a first physical uplink shared channel PUSCH according to a first time domain resource allocation set at the first time, bits of a frequency domain resource allocation domain of the first PDCCH are all zero, and bits of the time domain resource allocation domain of the first PDCCH are used to determine a second time domain resource allocation set used for scheduling a second PDSCH or a second PUSCH after the first time;

a processing unit, configured to schedule the second PDSCH or the second PUSCH at a second time according to the determined first time domain resource allocation set, where the second time is after the first time.

21. A method of communication, the method comprising:

receiving first downlink control information from network equipment, wherein the first downlink control information is carried in a first Physical Downlink Control Channel (PDCCH);

determining a first minimum slot offset value according to a first field of the first downlink control information, wherein the first field includes at least one of: a frequency domain resource allocation domain, a time domain resource allocation domain, a modulation coding mode domain, a new data indication domain or a redundancy version domain;

the first minimum time slot offset value represents the minimum available time slot offset value for receiving a Physical Downlink Shared Channel (PDSCH) or transmitting a Physical Uplink Shared Channel (PUSCH).

22. The method of claim 21, wherein the first downlink control information further comprises first indication information indicating that the first field carries indication information of a first minimum slot offset value.

23. The method according to claim 21 or 22, wherein the determining a minimum slot offset value according to the first field of the first downlink control information comprises:

when one or more of the first domains of the first downlink control information are first set values, obtaining values of the time domain resource allocation domains, where the values of the time domain resource allocation domains are used to indicate the first minimum timeslot offset value.

24. The method according to claim 21 or 22, wherein the determining a first minimum slot offset value according to the first field of the first downlink control information comprises:

when one or more fields in the first field of the first downlink control information are first set values, acquiring a first minimum time slot offset value which is pre-configured or predefined.

25. The method according to any of claims 21 to 24, wherein the receiving the first downlink control information from the network device comprises:

receiving the first downlink control information at a first time, wherein the application time of the first downlink control information is not earlier than a second time;

the method further comprises the following steps:

receiving second downlink control information at a third time, wherein the third time is between the first time and the second time, the second downlink control information is used for indicating a second minimum timeslot offset value, and the application time of the second downlink control information is not earlier than a fourth time;

determining a used minimum time slot offset value and an application time of the used minimum time slot offset value according to the first downlink control information and/or the second downlink control information, wherein the used minimum time slot offset value is one of the first minimum time slot offset value and the second minimum time slot offset value, and the used application time is not earlier than one of the second time and the fourth time.

26. A method of communication, the method comprising: sending first downlink control information, wherein the first downlink control information is carried in a first Physical Downlink Control Channel (PDCCH), and a first field of the first downlink control information is used for determining a first minimum slot offset value, wherein the first field includes at least one of the following fields: the first minimum time slot deviant is used for expressing the minimum available time slot deviant for sending a Physical Downlink Shared Channel (PDSCH) or receiving a Physical Uplink Shared Channel (PUSCH).

27. The method of claim 26, wherein the first downlink control information further comprises first indication information indicating that the first field carries an indication of a first minimum slot offset value.

28. The method according to claim 26 or 27, wherein said sending the first downlink control information comprises:

the first downlink control information is sent at a first moment, wherein the application moment of the first information is not earlier than a second moment;

the method further comprises the following steps:

sending and receiving second downlink control information at a third moment, wherein the third moment is between the first moment and the second moment, the second downlink control information is used for indicating a second minimum time slot offset value, and the application moment of the second downlink control information is not earlier than a fourth moment;

29. A method of communication, the method comprising:

receiving downlink control information on a first bandwidth part BWP, wherein the downlink control information includes a slot offset value and BWP identification indication information;

when the BWP indication information indicates a second BWP, taking the slot offset value as a minimum slot offset value for the second BWP.

30. The method according to claim 29, wherein the downlink control information is further used to indicate that a Physical Downlink Shared Channel (PDSCH) is received or a Physical Uplink Shared Channel (PUSCH) is transmitted on the second BWP at a first time, and wherein the first time is a time slot in which a slot offset value is added to a receiving time slot of the downlink control information.

31. The method of claim 29, further comprising:

when the BWP indication information indicates a first BWP, if the timeslot offset value is smaller than the minimum timeslot offset value of the first BWP, receiving the PDSCH or transmitting the PUSCH at a second time, where the second time is a timeslot where the timeslot of the downlink control information plus the minimum timeslot offset value of the first BWP is located;

the slot offset value is taken as a new minimum slot offset value for the first BWP.

32. The method of claim 29, further comprising:

and if the time slot offset value is smaller than the time delay required by BWP switching, receiving the PDSCH or transmitting the PUSCH on the time slot of the receiving time slot of the downlink control information plus the time delay required by the BWP switching.

33. A method of communication, the method comprising:

transmitting downlink control information on a first bandwidth part BWP, wherein the downlink control information includes a slot offset value and BWP identification indication information;

34. The method according to claim 33, wherein the downlink control information is further used to indicate that a Physical Downlink Shared Channel (PDSCH) is transmitted or a Physical Uplink Shared Channel (PUSCH) is received on the second BWP at a first time, and the first time is a time slot in which a slot offset value is added to a receiving time slot of the downlink control information.

35. The method of claim 33, further comprising:

when the BWP indication information indicates a first BWP, if the timeslot offset value is smaller than the minimum timeslot offset value of the first BWP, transmitting the PDSCH or receiving the PUSCH at a second time, where the second time is a timeslot where the timeslot of the downlink control information plus the minimum timeslot offset value of the first BWP is located;

36. The method of claim 33, further comprising:

and if the time slot offset value is smaller than the time delay required by BWP switching, transmitting the PDSCH or receiving the PUSCH on the time slot of the receiving time slot of the downlink control information plus the time delay required by the BWP switching.

37. A communication device comprising a processor configured to couple to a memory, read instructions from the memory, and implement the method of any one of claims 21 to 25 in accordance with the instructions.

38. A communication device comprising a processor configured to couple to a memory, read instructions from the memory, and implement the method of any one of claims 26 to 28 in accordance with the instructions.

39. A communication device comprising a processor configured to couple to a memory, read instructions from the memory, and implement the method of any one of claims 29 to 32 in accordance with the instructions.

40. A communication device comprising a processor configured to couple to a memory, read instructions from the memory, and implement the method of any one of claims 33 to 36 in accordance with the instructions.